JPH07322711A - Mud-removing structure of crop seedling harvester - Google Patents

Abstract

PURPOSE:To provide a mud-removing transfer apparatus having a structure to remove attached mud by transferring a mud-removing claw in lateral direction relative to the transfer direction to attain sure and more effective mud- removing function and excellent performance such as the removal of the mud at a part unable to clean by conventional apparatus. CONSTITUTION:This harvester is provided with a clamping and hoisting apparatus to hold a seedling dug out from the ground and lift and transfer the seedling backward in suspended state and a mud-removing transfer apparatus 3 acting on the root of the transferred seedling to apply a transfer force to the seedling while removing the mud. The mud-removing transfer apparatus 3 has a circulating chain 19 holding a number of laterally movable mud-removing claws 18 to be thrusted into the root. The mud-removing claw 18 is oscillated by a driving and oscillating mechanism 3B. The driving and oscillating mechanism 3B is used in a state to reciprocate an interlocking member 23 extending across a plurality of the mud-removing claws 18. The interlocking member 23 has a sliding guide structure to interlock the mud-removing claws 18 in a laterally contacting state while allowing the transfer of the claw 18 driven by the circulating chain 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crop seedling harvester that mechanizes a series of operations for extracting and harvesting a mother plant of a root-rooted 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 document discloses mechanization of a series of seedling harvesting processes from excavation of straw grass in the ground to sludge removal and recovery on the machine body.

[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] To achieve the above object, the present invention provides a sandwiching method for lifting and transporting a seedling, which is dug from the ground, rearward and upward in a hanging posture with its stem portion sandwiched. A mud transporting device that removes the mud from the root while giving a transporting force that acts on the roots of the seedlings transported by the lifting and lifting device and that moves backward and upward along the sandwiching and lifting device. Attach the drop transport device to the endless rotation zone so that many of the mud claws that can act on the roots of the seedlings being nipped and transported can be swung in the left-right direction with respect to the seedstock transport direction. It is equipped with a drive swing mechanism that swings in the left and right directions.
The drive swing mechanism is configured by providing a reciprocating swing drive with an interlocking member extending over a plurality of mud-removing claws, and the interlocking member allows the transport movement of the mud-removing claws by driving the endless rotation band. However, it is characterized in that the mud-removing claw is set in a sliding contact guide structure that is driven to swing in the left-right direction with respect to the conveying direction by abutting.

[0006]

According to the above-mentioned characteristic structure, as will be described in detail in the embodiments, since the mud dropping claws reciprocate laterally with respect to the seedlings being carried, the mud dropping carrying device and the sandwiching and lifting device carry it. Regardless of the speed difference, the mud-removing claw continuously exerts the mud-cleaning action, and unlike the conventional case, the mud-removing claw does not rest on the root. And since the mud dropping claws move left and right while moving along the carrying direction of the sandwiching and lifting device, it is possible to apply a carrying force to the root part while sliding the mud. 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 the resistance of the.

Further, the interlocking member for swinging the mud dropping claw that is being conveyed is a member extending in the conveying direction, and
Since the mud-dropping claw is driven by a contact interlocking structure, it does not hinder the transport and swing movement of the mud-dropping claw, and it also drives and swings the mud-dropping claw in a position that does not act on the root. There will be no waste of money.

[0008]

As a result, a more reliable and more effective mud-removing function can be obtained by devising a structure in which the mud-removing and conveying device is structured to move the mud-removing claws in the lateral direction with respect to the conveying direction. We were able to provide the product with excellent performance, such as the ability to remove the mud that could not be sludged in the past.

[0009]

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 and lifting the seedling M excavated by the excavating device 1 rearward 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 the 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, and an engine 7. And so on.

The excavation device 1 comprises a pair of left and right sleds 8 and 8 attached to a work frame 10, a pair of left and right plows 9, and a pair of left and right conveyor belts 11 and 11 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.

The digging section 1 will be described in detail. As shown in FIGS. 3 and 4, the sled 8 has 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 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 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 pawl 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 the front and rear 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.

That is, when the rotational power is transmitted to the crankshaft 25, the left and right interlocking members 23 reciprocally swing back and forth around the longitudinal axis X, so that the mud dropping claws 18 on the upper side move left and right within a predetermined angle range. As the rocking operation is performed, the mud dropping claw 18 on the lower side in a state of straddling the support shaft 23a is moved forward without swinging left and right. Therefore, if the drive swinging mechanism 3B is driven in the drive state of the claw transport mechanism 3A in which the turning chain 19 is driven and the two rows of mud claws 18, 18 are transported, the interlocking member 23 and the mud claw are driven. Since the slidable claws 18 and 18 are slidable with each other, the sludge dropping claw 18 is moved rearward while swinging to the left and right to effectively loosen the root portion n of the seedling M and slough down.

That is, in the state in which the drive swinging mechanism 3B drives the interlocking member 23 extending along the conveying direction across the plurality of mud-removing claws 18 that plunge into the root portion n of the seedling M to move reciprocally. In addition to being provided, the interlocking member 23 is set to a sliding contact guide structure in which the mud-removing claw 18 is left and right abuttingly interlocked with each other while permitting the transport movement of the mud-removing claw 18 that is moved by the drive of the endless rotation band 19. There is.

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. In other words, the whole harvesting work device A including the excavation device 1, the sandwiching and lifting device 2, the sludge transfer 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 moved up and down 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 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. While the left and right plows 9 and 9 make cuts K on the left and right of the planted lower part M
Seedlings M are sown by the sleds 8 and 8 on the left and right and the weeding device 15, and the stalks of the seedlings M are conveyed to the conveyor belt 11 of the front conveyor 2A in a state where cuts K are formed to facilitate excavation. The 11 pairs start to be clamped, the seedlings M are pulled out from the ground by the conveying force, and the stems are lifted backward and upward in the clamped posture.

Then, in the state of being suspended and transported by the rear transport unit 2B, the mud transport device 3 loosens the root while loosening the mud. The transport speed by the rear transport unit 2B is V ₁ , and the mud is sloughed. 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 = 0.35 m / s and V ₂ = 0.40 m / s are set, and by this speed setting, the root part of the seedling M, such as the rear part, the central part and the front part, is distributed over the entire root part. The effect of loosening mud is imparted. The lower part M of the seedling after the operation of the mud-dropping transfer device 3 is dropped and is collected by the collecting part 33 at the rear part of the machine body.

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 configurations of the accompanying drawings by the entry.

[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 excavation device.

FIG. 4 is a partial plan view of the excavation 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.

[Explanation of symbols]

 2 Clamping and Lifting Device 3 Mud Dropping Transport Device 3B Drive Swing Mechanism 18 Mud Dropping Claw 19 Endless Rotating Band 23 Interlocking Member

Claims (1)

[Claims] 1. A sandwiching and lifting device (2) for lifting and transporting a seedling, which is dug from the ground, rearward and upward in a hanging posture with the stem part sandwiched, and a seedling carried by this. A sludge transporting device (3) that acts on the root of the root and removes the mud at the root while applying a transporting force directed rearward and upward along the sandwiching and lifting device (2). (3) A plurality of mud dropping claws (18) that can act on the roots of the seedlings that are nipped and conveyed can be swung in the left-right direction with respect to the seedling conveying direction, and the endless rotation band (1
9) and a drive swing mechanism (3B) for swinging the mud dropping claw (18) in the left-right direction. The drive swing mechanism (3B) is configured as the mud dropping claw (18). A plurality of interlocking members (23) extending so as to be reciprocally swingable, and the interlocking members (23) are
The mud-removing claw (1) driven by the endless rotation band (19)
8) A mud dropping structure of a crop seedling harvester having a sliding contact guide structure in which the mud dropping claw (18) is driven to swing in the left-right direction with respect to the carrying direction while allowing the carrying movement of 8).