JP5470553B2 - Plowing weeder - Google Patents

Description

  The present invention relates to a multiple-type middle-cultivated weeding machine that performs medium-cultivating soil treatment between furrows with a disk and a chisel by attaching to a rear hitch of a towing work vehicle.

  As shown in Patent Document 1 (FIG. 1), the multiple-type tillage weeder is configured by arranging the tilling work units in parallel and attaching them to the rear hitch of a towing work vehicle such as a tractor. It is known to perform medium tillage treatment of furrows with a disk and chisel provided in the unit. In this middle weeding weeder, work units that perform plowing operations are arranged in parallel from the main frame spanning a plurality of parallel furrows, and each work unit is connected to the work machine frame so that it can be moved up and down via parallel links. The work machine frame is provided with a spring that is elastically biased downward by the elastic force set by the adjustment rod, and the front end side or the rear end side of the left and right disks are arranged narrowly in a front and rear two-row configuration. And a chisel that softens the remaining tillage of the front disk, and the medium ring cultivation work can be performed following the height of the field scene by the gauge ring provided on the main frame. By setting the resilience of the frame individually, medium tillage cultivation soil can be carried out at a working depth according to the soil between each rib.

JP 2007-259812 A

  However, the above-structured middle tillage weeder has the characteristic that the working depth changes due to the softness of the soil because the disk operates in the middle tillage due to the elastic force of the spring set by the adjusting rod. The characteristics of the medium tillage soil performance deteriorates when the hardness and softness of the parallel struts fluctuate greatly, because each work unit of the multiple runs following the height between the two anchors where the gauge wheel rolls. Therefore, weeds may remain in areas where soil softness fluctuations and inter-height height fluctuations exceed the permissible range, so the working depth should be increased to avoid crop growth damage caused by weeds. It was a problem that had to be set.

  The object of the present invention is to ensure a constant working depth by following each of the working depths even when the working depths are constant due to the hardness and softness fluctuations of the soil, and the heights of the parallel furrows vary greatly. The purpose of the present invention is to provide a medium tillage weeder capable of efficiently cultivating medium tillage.

  In the invention according to claim 1, the working machine frame is connected to the main frame provided to be adjustable up and down with respect to the rear hitch of the traction machine body so that the working machine frame can be moved up and down by a parallel link. A spring that urges and urges the spring downward is provided so that the elastic force can be adjusted by the adjustment rod. In a middle tillage weeder equipped with a chisel for loosening and plowing, each work machine frame is provided with a gauge wheel by a rolling wheel that rolls in contact with the field and regulates the height position, and the disk is placed behind it. The chisel is arranged between two front and rear rows, and the above-mentioned chisel is arranged between the front and rear. The gauge wheel, the front row disk and the chisel are connected to each other through an auxiliary frame separate from the work implement frame. Characterized by comprising supporting the.

  The gauge wheel and the front disk and chisel are provided on the auxiliary frame, and the gauge wheel and work implement frame are provided in the same number in the corresponding relationship. Therefore, the gauge wheel absorbs the vertical movement caused by the parallel link of the work implement frame. To do.

According to a second aspect of the present invention, in the configuration of the first aspect, the auxiliary frame is provided such that a front-rear position of the auxiliary frame can be changed.
The distance between the gauge wheel, the front disk and the chisel can be adjusted while the distance between the rear disk and the rear disk is fixed.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the auxiliary frame is provided such that a height position thereof can be changed with respect to the work machine frame.
The distance between the gauge wheel, the front disk, and the chisel can be adjusted up and down while the distance between them is fixed.

  According to the first aspect of the present invention, the gauge wheel, the front disk, and the chisel are provided in the auxiliary frame, and the gauge wheel and the work machine frame are provided in the same number corresponding to each other. Absorbing the vertical movement caused by the parallel link, it is possible to stably perform the medium tillage work with the following front and rear disks and chisel. Therefore, even if the working depth becomes constant due to soil softness fluctuations and the heights of the parallel ridges fluctuate greatly, it is possible to follow each of them to ensure a constant working depth and efficiently cultivate medium-cultured soil. can do

  In addition to the effect of claim 1, the invention according to claim 2 is capable of adjusting the distance between the gauge wheel, the front disk, and the chisel while the distance between the rear disk and the rear disk is fixed. The front and rear disc intervals can be set according to the hard and soft field conditions, and the work can be stabilized.

  In the invention according to claim 3, in addition to the effect of claim 1 or 2, the front disk can be moved up and down with respect to the rear disk because the distance between the gauge wheel, the front disk and the chisel can be adjusted vertically. When adjusting the relationship, it is convenient to move the front disc and chisel together.

Side view of a conventional tillage weeder The side view of the working state which connected the middle plowing weeder of this invention to the tractor Enlarged side view of middle plowing weeder Enlarged plan view of middle plowing weeder

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
As shown in FIG. 2, a side view of the working state connected to the tractor is connected to the rear hitch H of the tractor working vehicle T that can travel on the field, such as a tractor, and the intermediate tiller weeder 1 is in a ridge. Move down and do medium tillage by towing.

  Specifically, as shown in FIGS. 3 and 4, an enlarged side view and a plan view of the middle plowing weeder 1 can be mounted on the rear hitch H of the field towing work vehicle T and extend across a plurality of parallel fences. 2 and a plurality of work units U, which are arranged in parallel via the main frame 2, and each work unit U includes a gauge wheel 3, front and rear two rows of disks 4, 5, and a chisel group 6 Etc.

  A box-shaped slide block 7 is mounted on the main frame 2 so that the center and left and right work units U can be slidably adjusted. To do. A connecting portion 7b for mounting to the rear hitch H is connected to the tip of the central slide block 7 by a horizontal support shaft 7d, and the upper end of the connecting portion 7b and the upper end of the slide block 7 are connected by a posture adjusting handle 7c. By doing so, a 2P link type connecting portion is formed. The connecting portion 7b is mounted on the rear hitch H on the towing side, and the entire middle weeding machine 1 moves up and down through the main frame 2 by moving up and down, and the horizontal support shaft 7d is used as a fulcrum by operating the adjustment handle 7c. The entire middle plowing weeder 1 tilts back and forth.

  Each work unit U is provided with a work machine frame 8 that is connected to the slide block 7 and extends in the front-rear direction. The work machine frame 8 is connected by upper and lower fulcrums 8e and 8e of a connecting portion 8f provided at the tip thereof. A parallel link mechanism 8a is connected to the slide block 7 so as to be movable up and down, and a spring 8b having an adjustment rod 8c as a spring guide is connected to a protruding portion 7a formed to protrude from the rear portion of the slide block 7, and its intermediate height Supports bullets so that they can slide. The lower end of the adjustment rod 8c is connected to a support shaft 8d provided at the longitudinal intermediate portion of the work machine frame 8, and a spring force is applied to the work machine frame 8 to restrict the spring 8b. The elastic force can be adjusted by selecting the position with the positioning pin. That is, the spring 8b is located between the protruding portion 7a and the work machine frame 8, and can bias the work machine frame 8 downward. A spring 8b1 is disposed between the protruding portion 7a and the holding pin at the upper end separately from the spring 8b, and the work implement frame 8 is raised by the spring 8b1 to move between fields and perform an impact during traveling on the road. It is configured to relax.

  Each work machine frame 8 includes a disc 4 in which left and right discs arranged narrowly on the front end side or the rear end side are arranged in two rows in the front and rear, with the gauge wheel 3 by a rolling wheel that contacts the field scene and rolling. 5 and a chisel group 6 in which a plurality of chiseles 6a and 6b each having a clod crushing bit formed at the lower end are integrally supported between the front and rear.

  The front row disc 4 is arranged with the tips of the left and right disc-shaped discs 4a, 4a close to each other, and the rear row disc 5 has a wide rear end of the star wheel-like left and right discs 5a, 5a. The gap between the grooves is widened by cutting, and the rear end of the disk 5 in the rear row is narrowed, and the gap is moved to the center side of the furrow. The chisel group 6 has a chisel 6a for hard fields in the front center, and chiseles 6b and 6b for normal medium-cultivated soil are collectively arranged on both rear sides. The center chisel 6a softens the residual tillage between the disks on the front side, and the chisel 6b, 6b on both sides of the rear side softens the soil in front of the succeeding rear side disk. It facilitates the entry of the disc into the soil.

  In the middle plowing weeder 1 having the above-described configuration, the gauge wheel 3 and the work machine frame 8 are integrally formed, and a constant elastic force is applied to the main frame 2 by the parallel link mechanism 8a and the spring 8b with the adjusting rod 8c. Since the operation follows the surface of the intercostal space, the medium tillage work can be carried out stably by the soil-feeding operation at a certain depth by the work units different from the interspace between the discs 4, 5 and the chisel group 6 before and after the gauge wheel 3. Can do. In addition, by arranging a plurality of working units side by side on a common main frame 2 to constitute the middle tillage weeder 1, the working depth is constant due to soil softness fluctuations, and the height of the parallel fences is high. Even if it fluctuates greatly individually, it is possible to follow each of them and ensure a constant working depth and efficiently cultivate medium tillage.

  In this case, the gauge wheel 3, the front row disk 4, and the chisel group 6 in each work unit U are hung from the front end of the work machine frame 8 and can be adjusted in the vertical and front / rear positions. Is provided integrally with the auxiliary frame 9 extending in the front-rear direction, and the gauge ring 3 and the chisel group 6 are arranged at equal intervals in the front-rear direction with the position of the front-row disk 4 in the center. This makes it possible to equalize the change in tilling depth and ensure stable load during work and stable tillage medium. Further, by adjusting the front and rear of the auxiliary frame 9, the distance between the front and rear disks 4 and 5 can be made to correspond to the crop condition and the field condition, and by making the vertical adjustment, the disk 4 and the chisel group 6 in the front row can be made to correspond to the work form. Can do.

  The gauge wheel 3 is attached via a height adjusting portion 3 a by a positioning pin at the front end portion of the auxiliary frame 9. The front chisel 6a is inserted and fixed in a holder 6c welded to the auxiliary frame 9, and the left and right chiseles 6b, 6b are positioned in the left and right positions via slide fitting support portions 6d, 6d formed on the left and right sides of the auxiliary frame 9, respectively. It is fixed to the left and right holders 6e, 6e provided so as to be adjustable.

  The front row of disks 4 is composed of left and right disks 4a, 4a which are supported by left and right longitudinal support shafts 4d, 4d supported on both sides of the auxiliary frame 9 in front of the adjustment support portion 8g and arms 4e, 4e extending rearward from the respective lower ends. Support and configure. The left and right vertical support shafts 4d and 4d are respectively provided with direction angle adjusting portions 4f and 4f using fan-shaped plates and positioning pins so that the front ends of the left and right disks 4a and 4a are close to each other, and the direction angle and the left and right distance can be adjusted. Configure.

  The rear row of disks 5 is supported at the rear end portion of the work machine frame 8 by left and right vertical support shafts 5d and 5d by a positioning pin type slide support portion 5c so that the left and right positions can be adjusted, and at the lower ends of the discs 5a and 5a, respectively. Support. The left and right vertical support shafts 5d and 5d are provided with direction angle adjusting portions 5e and 5e, respectively, using a fan-shaped plate and a positioning pin. The front and rear ends of the left and right discs 5a and 5a are arranged close to each other by the slide support portion 5c and the direction angle adjusting portions 5e and 5e.

  The adjustment rod 8c is supported by the work machine frame 8 at an intermediate position between the disks 4 and 5 arranged in two rows in the front and rear directions, so that the load of the disk is evenly received and the jumping is absorbed in a balanced manner, thereby performing the disk operation. Can be stabilized.

  The front row disk 4 having the above-described configuration is configured so that the position relative to the work machine frame 8 can be adjusted back and forth by the auxiliary frame 9, so that the position of the front row disk 4 can be adjusted in accordance with the difference in soil tillability due to soil clumps and dryness. Can be improved. In this case, the auxiliary frame 9 including the gauge ring 3 is provided so that the distance between the gauge ring 3 and the disk 4 in the front row can be maintained. Further, since the front row disc 4 of the middle plowing weed machine 1 connected by the 2P link is lowered along with the incline of the towing vehicle, which is unavoidable in a wet field, the middle tillage performance is lowered, so that the position of the auxiliary frame 9 is increased. Thus, the auxiliary frame 9 can be mounted vertically with respect to the work machine frame 8 so as to ensure medium tillage performance.

  The left and right chisels 6b, 6b on the rear side are arranged slightly higher than the disc, with two on the left and right evenly across the tire width so that weeds are pressed by the tire of the tow vehicle and the weeds that cannot be raised even with the disc are raised. . By arranging the chisels 6b and 6b in this way, weeds can be caused, and as a result, weeds can be prevented from remaining by the weeding operation of the disk 5 in the rear row, so that the chisels 6b as load resistance in a hard field. , 6b can be combined with the original function.

  Further, the rear row discs 5 are aligned with the tip positions of the left and right discs 5a, 5a and the lateral positions of the left and right chisels 6b, 6b in order to suppress floating in a hard field and improve bite. Configure.

The position of the center of gravity G in the front-rear direction of the entire work unit U is set at an intermediate position between the front-row disk 4 and the fulcrum 8d of the adjustment rod 8c, so that the rear-row disk 5 required for rear balance is not required to be lifted. Therefore, the slide operation with respect to the main frame 2 becomes easy, and as a result, one person's work of adjusting the striations becomes possible.
The position of the fulcrum of the work machine frame 8 is set to these three points by making the position of the fulcrum 8e of the parallel link 8a, the position of the center of gravity G in front of the link, and the position of the fulcrum 8d of the adjustment rod 8c equal. Since the parallel link 8a reacts quickly when the applied load is released and the middle tillage soil can be made uniform, the middle tillage soil work can be stabilized even if there is unevenness in the field.

  For the work unit U, the gauge wheel 3 and the front and rear disks 4 and 5 are configured so that they can be easily removed, leaving only the chisel group 6 so that the field tillage weeder can be diverted as an optimum paddy grooving machine. Therefore, without requiring a paddy grooving machine, the paddy rice can be cut during the flowering period to improve drainage, and the paddy field can be dried in the middle to prepare for harvesting.

By providing scrapers 4b and 5b made of bar material on the front and rear two rows of discs 4 and 5, respectively, soil that has been scooped up in the case of plate materials accumulates and clogs the scraper plate, and the discs do not rotate. Can be solved.
In this case, the disk 4 in the front row is additionally provided with a scraper 4c made of spring steel bar material at the front position thereof, so that large soil is dropped in advance to maintain the cultivating performance, and the scraper The strength can be maintained.

A three-unit work unit U having a parallel configuration can be supported at a center so as to be able to roll and supported by a parallel link, and the ground height weeding machine can be configured so as to receive a constant ground height with the gauge wheels 3 on both sides.
Further, in the middle tillage weeder for soybeans, the parallel link is unlocked, the spring under the adjusting rod 8c is removed, and the intermediate work unit U is lifted up so that it can be locked. The working unit U, U is a two-unit configuration, and can also be used as an intermediate tillage weed machine for wheat having a 90 cm gap.

  The slide block 7 is configured in a box shape to reduce weight and improve strength, which makes it difficult for work machines that require lift because of the high vehicle height, such as a passenger management machine, in terms of workability. However, it can be solved together with the problem of durability life.

  In addition, each work unit U arranges the discs 4 and 5 arranged in the front and rear two rows with the chisel group 6 sandwiched therebetween at the rear of the gauge wheel 3, so that the front-side disc wheel 4 bites into the front row disc 4. The chisel group 6 can suppress the difference in the bite of the disc due to the hardness of the soil and stabilize the soil cultivation work.

  At this time, even if the work load fluctuates, the chisel group 6 is received between the disks 4 and 5 arranged in two rows in the front and rear, so that the working machine is balanced and constant in the soil-growing operation without changing the disk angle. Can be secured. In addition, by providing the gauge wheel 3 for each work unit U for each of the furrows, the amount of soil can be changed, and the amount of soil can be stabilized even if there is unevenness or inclination of the field.

  About the attitude | position adjustment handle 7c, by providing a fulcrum at the corner of the slide block 7 having a box shape attached to the main frame 2, it is possible to secure the strength of the entire middle weeding machine 1 during hanging and up-and-down operation. . The inclination angle of the handle axis is configured to be approximately 45 ° so that the adjustment operation can be performed even when the vehicle is on the towing work vehicle T and the operation load is reduced.

DESCRIPTION OF SYMBOLS 1 Medium tillage machine 2 Main frame 3 Gauge wheel 4 Disc 4a Disc 5 Disc 5a Disc 6 Chisel group 6a Chisel 6b Chisel 7 Slide block 7b Connection part 7c Attitude adjustment handle 7d Horizontal support shaft 8 Work machine frame 8a Parallel link mechanism 8b Spring 8c Adjustment rod 9 Auxiliary frame G Center of gravity position H Rear hitch T Farm tow work vehicle U Work unit

Claims (3)

A work machine frame (8) is connected to a main frame (2) provided to be adjustable up and down with respect to a rear hitch (H) of the traction machine body (T) so that the work machine frame (8) can be vertically moved by a parallel link (8a). Each work machine frame (8) is provided with a spring (8b) that elastically biases downward so that the elastic force can be adjusted by the adjustment rod (8c), and the front end side or the rear end side is arranged narrowly. In a middle tillage weeder equipped with a disk (4, 5) for medium tillage cultivation of the soil between the ribs by the left and right disks and a chisel (6) for loosening the remaining tillage of the disk,
Each work machine frame (8) is provided with a gauge wheel (3) by a rolling wheel that rolls in contact with the farm scene and defines the height position, and the disk (4, 5) is arranged in two rows in the front and rear of the gauge wheel (3). The chisel (6) is arranged between the front and rear sides thereof, and the gauge wheel (3), the front row of the disk (4) and the chisel (6) are separated from the work machine frame (8) and an auxiliary frame ( 9) A middle tillage weeder characterized by being integrally supported via 9).   The middle-cultivating weeding machine according to claim 1, wherein the auxiliary frame (9) is provided so that a front-rear position can be changed with respect to the work machine frame (8).   The medium-cultivating weeding machine according to claim 1 or 2, wherein the auxiliary frame (9) is provided such that a height position thereof can be changed with respect to the work machine frame (8).

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