JP3487680B2 - Root crop harvester pull-up conveyor - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a root crop harvester for extracting root crops such as onions and carrots from a field and harvesting them. 2. Description of the Related Art A leaf-stalk-holding / conveying mechanism composed of a pair of conveying belts which are inclined upward and a leaf-stalk-portion-holding / conveying mechanism gradually expands as the vertical distance between them approaches the lower side of the conveyance. A root crop harvester of a type for extracting and harvesting root crops to be planted in a field is known with a pull-up and transport device configured by a guide mechanism disposed below the leaf stem holding and transporting mechanism. (See, for example, Japanese Patent Publication No. 34575/1993, Japanese Utility Model Publication No. 5-53420, etc.). [0003] In this kind of root crop harvester, the pinching force of a guide mechanism provided at a later rising slope that is gentler than that of the leaf stem holding and conveying mechanism is smaller than that of the leaf stem holding and conveying mechanism. The ground part (root part) of the root crop is lifted diagonally and upward by holding the above-ground part (leaf stem) of the root crop by the leaf stem holding and transporting mechanism with strong holding power. When the root crop is pulled out from the ground and reaches a predetermined transfer position, the upper shoulder portion of the root is brought into contact with the guide mechanism and regulated, so that the posture and the position with respect to the processing apparatus in the next process are maintained constant. It is configured as follows. [0004] The guide mechanism of the pulling and conveying apparatus is composed of a pair of left and right belts or a belt with a roller. Although the pinching force of the belt and the like is set to be weaker than the pinching force of the leaf stem holding and conveying mechanism, the root vegetable crops are configured to be in contact with each other even in a natural state where the root vegetable crops are not pinched. If it is transported,
The root and upper shoulder of the root crop is damaged by a dent-like load, and the root and upper shoulder of the root crop is brought into contact with the guide mechanism and then the pulling force is applied. There is a problem that an excessive load is applied to the site and the site is likely to be damaged, and the harvested product is damaged. Further, in the conventional apparatus, when a root portion of a root crop which is nipped and pulled up by a leaf stem holding and transporting mechanism reaches a starting end of a guide mechanism, a leaf stem holding and transporting mechanism is provided. There is also a problem that it is difficult for smooth lifting and conveyance to be performed due to being caught on the starting end of the guide mechanism or the guide mechanism, or slipping between the two and penetrating. The present invention has been made in view of these problems, and a first object of the present invention is to make it possible to extract and harvest well without damaging the upper shoulder region of the root crop. It is a second object of the present invention to allow the root of the root crop to be lifted and conveyed to flow smoothly even at the start end of the guide mechanism. Means for solving the problems [0006] A leaf stem holding transport mechanism (25) comprising a pair of transport belts (25a) (25a) inclined backward and upward, and a leaf stem holding transport mechanism (25). A pull-up transport device (17) comprising a guide mechanism (26) disposed below the leaf stem holding and transporting mechanism (25) so that the vertical distance between the two moves gradually toward the lower side of the transport. In the root crop harvesting machine for extracting the root crop (23) from the field, the guide mechanism (26)
It comprises a pair of soft elastic belts (26a) (26a) which are wound so as to form a predetermined non-contact gap (S) between them, and a cutting device is provided below the leaf stem holding and conveying mechanism (25).
(19) is provided, and the cutting action portion thereof is provided in the holding path (25).
b) The leaf stem is held by the leaf stem holding and transporting mechanism (25).
Rhizome crop (2)
3) When the end of the holding path (25b) is reached,
The foliage (23a) is cut off from the (23b) side, and a feeding wheel (27) is provided on the delivery end portion of the guide mechanism (26) to the transfer unit to the processing device in the next step. It is a pulling and conveying device of a root crop harvester. According to the present invention, the pulling and conveying device of the root crop harvesting machine according to the present invention is a leaf stem holding and conveying mechanism (25) comprising a pair of conveying belts (25a) and (25a) inclined upward and backward. And a guide mechanism (26) disposed below the leaf stem holding and conveying mechanism (25) such that the vertical interval between the leaf stem and the leaf holding and conveying mechanism (25) gradually expands toward the lower side of the conveying. In the root vegetable harvesting machine that pulls out the root vegetable crop (23) from the field by the pulling and conveying device (17) composed of the following, the guide mechanism (26) is provided with a predetermined non-contact gap (S) therebetween. while a pair of soft elastic belt train-around to allow (26a) (26a), leaves
A cutting device (19) is provided below the stem holding mechanism (25).
Is disposed, and the cutting action portion faces the holding path (25b).
The leaf stem (23a) is moved by the leaf stem holding and transporting mechanism (25).
Rhizome crop (23) that is pinched, pulled up and transported "
When the end of the road (25b) is reached, the root (23b) side
Cut the stem and leaf part (23a), and cut the guide mechanism (26).
In this configuration, the feeding wheel (27) is provided at the transfer section to the processing device in the next process on the side of the transport end, so that the root crops are transported in an inclined posture, or the upper shoulder portion of the root contacts the guide mechanism. Even if the lifting force is further applied after this state, the root and upper shoulder portions are not subjected to an excessive load, and a good harvest with little damage is performed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall side view of a root crop harvesting machine in which the apparatus of the present invention is implemented, and FIG. 3 is a side view of the root crop harvester according to the present invention cut away from a part of the left side, FIG. 4 is a schematic view of a main section taken along line AA of FIG. 2, and FIG. 5 is a modification of the present invention. FIG. 6 is a schematic diagram of a main part showing another modification of the present invention, FIG. 7 is a schematic diagram of a main part showing another modification of the present invention, and FIG. It is the plane schematic which showed an example of the guide mechanism in the apparatus of this invention. First, the overall structure of a root crop harvesting machine in which the apparatus of the present invention is implemented will be described with reference to FIGS. The root crop harvesting machine is configured by installing a harvesting work unit (2) on a walking-operated self-propelled vehicle (1). The self-propelled vehicle (1) includes an engine (3), a transmission case (4) having a transmission mechanism interlocked with an output portion thereof, and a cylindrical case extending right and left from the transmission case (4). A left and right final case (5) (5) connected to the tip of the case, a pair of left and right running wheels (6) and (6) supported by the respective final case (5), and a transmission. Left and right main frame (7) arranged in front of case (4) and engine (3)
And a steering handle (8) extending rearward from the main frame (7). A work frame is provided at the front of the self-propelled vehicle (1).
A harvesting operation section (2) is constructed by attaching various composition devices described later to the work frame.
The work frame has a plurality of lower frames (9) (9) extending forward from the main frame (7) and a front end supported on each of the lower frames (9). Side surfaces of an upper frame (10) (10) inclined obliquely upward and a transmission support case (11) connecting the rear ends of the upper and lower frames (9) (10). The frame is formed in a substantially triangular shape, and a plurality of weeding frames (12) (12) are extended forward from each lower frame (9). Reference numeral (13) denotes a gage wheel which is mounted on the weeding frame (12) at the left or right end so that the vertical position can be changed, and is provided so as to roll the slope of the ridge. . [0011] Various devices composing the harvesting work unit (2) include a weeding device (14), a scraping device (15), a chisel (16),
A pick-up / convey device (17), a bundling device (18), a cutting device (19), and the like;
4) A fixed weeding board (20) fixedly mounted on the front end of each weeding frame (12) and a tine-inverted vertical turning type which is mounted on the rear of the fixed weeding board and inclined upward and backward. Sorting device (2
1) and root crops (2
3) The leaf stem (23a) is sorted and arranged. [0012] The scraping device (15) is located at the lower back of the weeding device (14), is inclined to the front low and rear high when viewed from the side, and
It is composed of a pair of left and right endless strips with squeezing projections arranged in an eight-letter shape extending forward in plan view.
4) The foliage portion (23a), which has been sorted and arranged, is scraped into the central portion in the lateral width direction and is taken up by the starting end portion of the conveying device (17). The chisel (16) is provided with the scraping device (15).
Is to dig the ground (23a) of the root vegetable crop (23) and then dig the ground (23b) to dig the root (23b). It is composed of a pair of left and right blades with the horizontal blades extending in the direction facing each other, and swings the middle part in the vertical direction of the vertical plate part of each blade back and forth around the pivot (24). The work frame is pivotally attached to the work frame, and is reciprocated in the front-rear direction by a chisel driving mechanism described later. The above-mentioned pulling-up / conveying device (17) is provided with a leaf stem holding / conveying mechanism (25) which is installed inclined upward and rearward along the upper frames (10), (10), and a leaf stem portion. A guide mechanism (26) is provided below the holding and transporting mechanism (25) and installed at a smaller inclination angle than the device (25), and the vertical distance between the two mechanisms (25) and (26) is determined in the transport direction. It is provided so that it becomes wider toward the lower side. Then, the leaf stem holding and conveying mechanism (25) is provided with an upper frame (1).
0) A pair of left and right conveyor belts (25a) (25a) which are hung around a group of wheels supported on (10), and a pinch formed between opposed contact surfaces of both conveyor belts (25a) (25a). The root (23a) of the root crop, which has been taken over from the scraping device (15), is clamped in the road (25b), and is lifted and transferred upward after being inclined. The guide mechanism (26) is also composed of a pair of left and right soft elastic belts (26a) (26a), but both belts (26a) (26a) face each other in a natural state where the root crops are not sandwiched. A transport path is formed by being wound around so that a predetermined non-contact gap (S) is formed between the transport path, and the end of the transport path is communicated with the binding pocket of the binding device (18) to form a transport path end section. Feeding wheels (27) and (27) are provided at the delivery site from the to the binding pocket. A root crop (which is pulled up and conveyed by the leaf stem holding and conveying mechanism (25)) between the starting end of the guide mechanism (26) and the lower surface of the leaf stem holding and conveying mechanism (25). The root (23b) of 23) is the two mechanisms (26) (25)
There is provided a guide member (28) for preventing the intrusion into the space and guiding the transition to the lower side of the guide mechanism (26). As shown in FIG. 8, the pair of left and right soft elastic belts (26a) and (26a) constituting the guide mechanism (26) are provided with conveying projections (26b) and (26b). It is preferable to form a non-contact gap (S) between the transfer protrusions (26b) and (26b). However, in some cases, the transfer protrusions (26b) and (26b) may be formed of a flat belt without the transfer protrusions (26b) and (26b). A non-contact gap (S) may be provided between the flat belts. Further, as shown in FIG. 5, the non-contact gap (S) is positioned on a vertical line (Y) with respect to the holding path (25a) of the leaf stem holding and conveying mechanism (25). It may be formed in an aligned relative positional relationship, and in some cases, as shown in FIG. 6, the holding path (25b) of the leaf stem holding and transporting mechanism (25).
May be provided to be deviated to the left or to the right by a predetermined dimension (L). Further, as shown in FIG. 4, the soft elastic belt (26a) faces the non-contact gap (S). The hooking surface may be provided in a relative positional relationship such that the hanging surface substantially coincides with the left or right side surface of the holding path (25b). Further, the pair of left and right soft elastic belts (26a) and (26a) in the guide mechanism (26) are connected to the transport belts (25a) and (25a) of the leaf stem holding transport mechanism (25).
In addition to the case where it is provided in parallel with (see FIGS. 4 to 6), as shown in FIG. Also, the relative position of the non-contact gap (S) in the left-right direction with respect to the holding path (25b) may be three in the same manner as the former. The bundling device (18) is located in a substantially triangular space extending rearward in a side view and formed between the leaf stem holding and conveying mechanism (25) and the guide mechanism (26). The center of gravity is disposed near a vertical line passing through the axis of (6). And the binding device (18)
Are formed such that a binding pocket is formed below the binding transmission case (29), and a knot portion and a needle are located at left and right portions of the binding pocket. A binding object receiver is provided at a position appropriately separated downward from the object. The cutting device (19) is disposed below the leaf stem holding and conveying mechanism (25) at a position on the upstream side of the bundling device (18), and its cutting action portion faces the holding path (25b). Have been. And a leaf stem holding and conveying mechanism (25)
When the rhizome crop (23) which is nipped and conveyed while pinching the leaf stem (23a) reaches the terminal end of the clamping path (25b), the stem (23a) is separated from the root (23b) side,
The cut foliage (23a) is transported by the foliage holding and transporting mechanism (2).
5) While continuing to pull up and carry, the root (23b) side is fed into the binding pocket. Next, a transmission mechanism for driving various devices of the harvesting work section (2) will be described. The counter shaft (3) driven by the power transmitted from the transmission case (4) via the PTO shaft (30) and the passive case (31).
2) is arranged in parallel with the main frame (7), and a transport drive case (33) and a binding drive case (34) are provided on its counter shaft (32) to drive the transport. Case (33)
A pull-up / convey device (1) is driven by a drive shaft extending upward through the above-mentioned transmission support case (11) connected to the
7) The transport belts (25a) and (25a) in the leaf stem holding and transporting mechanism (25) are each configured to be rotationally driven in a predetermined direction. When the transport belts (25a) and (25a) of the leaf stem holding and transporting mechanism (25) rotate, the pair of left and right endless endless belts of the scraping device (15) are similarly operated in conjunction therewith. A chain case (35) is provided which is rotatable, and is interlocked with the leaf stem holding and conveying mechanism (25) and the scraping device (15). To drive the soft elastic belts (26a) and (26a) of the guide mechanism (26) to rotate.
A plurality of sets of the vertical separating / separating apparatus (21) of the weeding apparatus (14) are rotationally driven. The left and right shaft ends of the counter shaft (32) are the transport drive case (33) and the binding drive case (3).
4), the eccentric rotors (36), (36) are attached to the respective projecting portions, and the eccentric rotors (36) are connected to the chisels (16) by connecting rods (37). Each chisel (16) is connected to the upper end of the vertical plate so as to reciprocate back and forth with a predetermined amplitude.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of a root crop harvesting machine in which the apparatus of the present invention is implemented. FIG. 2 is an overall plan view of the same. FIG. 3 is a side view in which a part of the left side of the root crop harvester according to the present invention is cut away. FIG. 4 is a schematic view of a main part taken along a line AA in FIG. 2; FIG. 5 is a schematic view of a main part showing a modification of the present invention. FIG. 6 is a schematic view of a main part showing another modification of the present invention. FIG. 7 is a schematic view of a main part showing another modified example of the present invention. FIG. 8 is a schematic plan view showing an example of a guide mechanism in the device of the present invention. [Description of Signs] 17 Pulling-up / conveying device 23 Root crop 23a Leaf portion 23b Root portion 25 Leaf portion pinching / conveying mechanism 25a Conveying belt 25b Pinching path 26 Guide mechanism 26a Soft elastic belt 28 Guide member S Non-contact gap

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-7-99817 (JP, A) JP-A-6-11 (JP, A) JP-A-2-131519 (JP, A) JP-A-58-1983 126710 (JP, A) Japanese Utility Model 4-6625 (JP, U) Japanese Utility Model 64-64 (JP, U) Japanese Utility Model 60-89826 (JP, U) Japanese Utility Model 5-53420 (JP, U) Actually open Hei 7-5316 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01D 13/00-33/14

Claims (1)

(57) [Claims 1] A pair of conveyor belts (2
5a) A leaf-stalk-part holding / conveying mechanism (25) comprising (25a)
A guide mechanism (2) disposed below the leaf stem holding and transporting mechanism (25) such that the vertical interval between the leaf stem and the leaf stem holding and transporting mechanism (25) gradually expands toward the lower side of the transport.
6), in the root crop harvesting machine that pulls out the root crop (23) from the field by the pulling and conveying device (17), the guide mechanism (26) is provided with a predetermined non-contact gap (S ), A cutting device (19) is disposed below the leaf stem holding and transporting mechanism (25). The action section is exposed to the holding path (25b),
A rhizome crop (23), which is pinched and conveyed by the leaf stem (23a) by the leaf stem holding and transporting mechanism (25), is held in the holding path (2).
When reaching the end of 5b), the foliage (23a) is cut from the root (23b) side, and is sent to the delivery unit to the processing device in the next process at the transport end of the guide mechanism (26). (27) A pulling and conveying device for a root crop harvesting machine characterized by providing (27).