JP4142799B2 - Subsoiler work machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a subsoiler work machine, and more particularly, to a subsoiler work machine that has a function of releasing the excavated soil on the field surface along with excavation work in addition to a subsoil crushing function, and further can extend the excavation life of a knife beam. .
[0002]
[Prior art]
When considering the soil structure of the field, the surface soil layer that exists on the surface is the one that is well-managed and has an environment suitable for the growth of crops. Immediately below this soil layer, in the case of rotary plowing, a hard disc that has been struck by a tilling nail is formed, and this hard disc narrows the rhizosphere and hinders the growth of the crop. was there.
By crushing this hard disk, the rhizosphere is expanded to the subsoil layer below the hard disk, and it becomes possible to absorb water from the subsoil layer even if it becomes deficient in water. When excess water is present in the field, the field environment is maintained so that the water penetrates below the hard disk and the surface of the field is not muddy by the surface water. A typical working machine used to maintain such field conditions is a subsoiler.
[0003]
A typical subsoiler work machine described above will be described below. The subsoiler work machine shown in FIGS. 8 to 10 has a knife holder 103 for mounting a knife beam, which will be described in Achi, at the center of a frame 101 extending in the working width direction. The knife holder 103 extends back and forth along the working direction, and is fixed by fastening with a bolt or the like in a state of sandwiching the frame 101 in the vicinity of the front end portion thereof. A knife beam 106 is inserted through the window hole at the rear end of the knife holder 103, and is fixed through the knife beam 106 by a bolt that penetrates the side plate 10A of the knife holder 10. A chisel 107 is attached to the lower end portion of the knife beam 106. Chisel support plates 107A and 107A are provided on the back side of the chisel 107, and the lower end portion of the knife beam 106 is interposed between the chisel support plates 107A and 107A. Is clamped with bolts. Wings 107a are attached to the chisel support plates 107A and 107A by chains, chains, or the like.
[0004]
A mast 109 is disposed on the front side of the central portion of the frame 101. The mast 109 has a height, and a lower end portion thereof is fixed to a front end portion of the knife holder 103. A hitch pin hole 109a is provided at the upper end portion of the mast 109, and the upper link U of a three-point link hitch mechanism provided in a tractor (not shown) is hitch the pin through the hitch pin hole 109a.
[0005]
A cross shaft 111 is attached to the front side of the frame 101 in parallel with the frame, and both end portions thereof are detachable from the frame 101 by brackets 112. A lower link L of a three-point link hitch mechanism is attached to both ends of the cross shaft 111. With this three-point link hitch mechanism, the subsoiler work machine is mounted on the tractor.
[0006]
Two knife holders 113 and 114 are also arranged in the vicinity of both end portions of the frame 101 in parallel with the knife holder 103, and are bolted and integrated with the frame 101 at their front end portions. Yes. Knife beams 121 and 122 are also attached to the rear ends of the knife holders 113 and 114, and the attachment structure penetrates the side plates 113A and 114A of the knife holders 113 and 114 in the same manner as the knife beam 106. It is fixed with bolts.
At the lower ends of the knife beams 121 and 122, chiseles 124 and 125 having wings 124a and 125a are attached to the knife beams by a pair of chisel support plates 124A and 125A, similarly to the knife beam 106.
[0007]
When the subsoiler work machine moves together with the tractor, the chiseles 107, 124, and 125 are guided into the soil by the suction function, and the subsoil is crushed. By using such a subsoiler working machine, the soil is swelled and softened together with the crushing of the hard disk and the subsoil.
[0008]
The subsoil work machine is the most important work for subsoil crushing, but it is also possible to reclaim the subsoil by excavating a part of the subsoil to the surface of the field along with subsoil crushing and releasing it further. What is made is known. This is provided with a member called a soil repellent plate along the front edge of the knife beam. In FIG. 8 and FIG. 10, the soil repellent plate is indicated by an imaginary line and denoted by reference numeral 130. . The soil repellent plate 130 is made of a steel plate or the like as in the case of the knife beam, and is formed by being curved with substantially the same curvature along the front edge of the curved knife beam, and is fixed to the knife beam. . The soil repellent plate 130 moves a part of the subsoil to the surface of the farm field along with the excavation work of the work machine, and further releases it to the side. The subsoil raised by the soil repellent plate 130 is mixed with the soil, and the soil is layered.
Further, in the subsoiler work machine, the one that directly performs the excavation action is a knife beam, and naturally wears due to friction during the excavation action. As shown by the broken line Z in FIG. 10, this wear state is likely to wear from the vicinity of the upper end of the chisel to the upper end of the blade edge. In some cases, the portion was unevenly worn locally, and the knife beam as a whole could not function.
[0009]
[Problems to be solved by the invention]
As described above, in order to perform work expected from various fields, the types of work machines increase, investment costs increase, and management of these work machines also results in cost and labor. Investment effects tend to be sparse.
Therefore, the object of the present invention is to subsoil the soil while regenerating the subsoil in addition to the subsoil work machine's original functions of subsoil crushing and softening functions, and not only subsoil regeneration but also subsoil crushing An object of the present invention is to provide a subsoiler work machine that functions as a dedicated work machine and that improves the state of uneven wear.
[0010]
[Means for Solving the Problems]
In order to achieve such an object, the present invention provides a subsoiler working machine having a knife beam having a chisel at its lower end, and is arranged along the front edge of the knife beam to warp the subsoil upward. This soil repellent plate has a plastic repellent plate body made of ultra-high molecular weight polyethylene, etc. on the surface, and the soil repellent plate body that is fixed to the back side along this soil repellent plate body It is characterized in that this reinforcing plate and the knife beam are detachable, and the soil repellent plate is made of plastics repellent plate body with very little soil adhesion, and the back side Since it is composed of a reinforcing plate that retains and reinforces the shape of the soil repellent plate body, it can work with less resistance and less traction resistance until the soil is repelled and released.
The reinforcing plate has mounting pieces projecting along the length direction of the reinforcing plate so as to cover the blade edge of the knife beam, and the mounting piece can be bolted to the knife beam. Therefore, it is possible to replace the soil repellent plate and to change the function.
Furthermore, the wear-resistant member that covers at least the blade edge portion of the knife beam that is rubbed by friction with soil by excavation work is configured to be detachably attached to the knife beam. Thereby, although the knife beam is locally worn and the knife beam main body has a remaining service life, it is possible to reduce the service life due to wear of only the blade edge.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to FIGS. First, FIG. 1, FIG. 2 and FIG. 3 are a front view, a plan view, and a right side view of a subsoiler working machine according to the present invention. As shown in these drawings, the subsoiler working machine constitutes a working machine body. Frame 1 to be The frame 1 is made of a pipe member made of steel and having a rectangular cross section, and is long along the working width direction. The frame 1 is arranged so that the ridge lines drawn by the sides of the rectangular cross sectional shape are positioned vertically. . In the vicinity of both ends of the frame 1, two knife holders 4 and 5 for attaching the knife beams 2 and 3 are arranged and attached. Chiseles 7 and 8 are provided at the lower ends of the knife beams 2 and 3, and chisel support plates 7 </ b> A and 8 </ b> A are bolted with the knife beams 2 and 3 sandwiched therebetween. And the wings 7a and 8a are attached to each.
[0012]
Both the knife holders 4 and 5 are constructed by joining members made of steel plates to each other by welding, are formed in the same shape and size, and are arranged in parallel along the working width direction. Both knife holders 4 and 5 are attached to the frame 1 via a fixture 10 at their front end portions. The fixture 10 includes a pair of attachment members 12 and 13. Both mounting members 12 and 13 are made of steel plate, are formed so as to match the outer shape of the frame 1, are arranged so as to sandwich the frame 10 in the front and rear, and the rear mounting member 13 is welded to the knife holders 4 and 5. Has been. If the cross-sectional shape of both the attachment members 12 and 13 is explained in full detail, each of the attachment members 12 and 13 has an L-shaped shape so as to match the front and rear halves of the frame 1 having a rectangular cross section. The mounting members 12 and 13 are fastened to each other by two sets of bolts 15a and nuts 15b at both upper and lower ends.
[0013]
In addition, about the said fixing tool 10, as shown in FIG. 4, the structure shown to (a) of FIG. 4, for example, joins the upper end parts of the said attachment members 12 and 13 by welding, and each lower end part Are fastened with bolts 15a and nuts 15b. 4 (b) is similar to FIG. 4 (a) in that one end of both mounting members are welded to each other, and both mounting members are arranged so as to sandwich the frame 1 vertically. is there. By adopting these configurations, the number of bolts 15a and nuts 15b handled by the operator is reduced, and the attaching and detaching operations of the knife holders 4 and 5 with respect to the frame 1 and the moving operation for selecting the position of the knife beam are performed. It becomes easy.
[0014]
A mast 19 is disposed on the front side of the center of the frame 1. The mast 19 is made of a steel plate, extends obliquely upward, and has a lower end fixed to the frame 1, specifically, welded. A hitch pin hole 19a is provided at an upper end portion of the mast 19, and an upper link U of a three-point link hitch mechanism provided in a tractor (not shown) is hitch the hitch pin hole 19a with a pin.
[0015]
Here, the mast 19 has a mast main body 19c and a movable plate 19d provided at the upper end of the mast main body 19c. The movable plate 19d is swingably attached to the mast main body 19c by a bolt 18a and a nut 18b at the center thereof. The hitch pin 19a is provided at one end of the movable plate 19d. Also, as shown in FIG. 3, two pin insertion holes 19f and 19g are formed on a virtual circle centered on the bolt 18a at the upper end of the mast body 19c, and no reference numerals are given. However, a pin insertion hole is also formed at the other end of the movable plate 19d so as to correspond to these pin insertion holes. The pin 20 of the movable plate 19d is made to coincide with one of the two pin insertion holes 19f and 19g formed in the mast main body 19c, and the pin 20 is inserted. With this configuration, it is possible to select the lift height at the time of the overpass movement and to facilitate the movement of the work implement between fields.
[0016]
The movable plate 19D can select two positions, a substantially horizontal position (position indicated by a solid line in FIG. 3) and a substantially upright position (position indicated by a two-dot chain line).
[0017]
Since this subsoiler work machine moves between fields while attached to the tractor, the work machine can be lifted beyond the lift capacity of the tractor when crossing the fence, making it easy to move It can be carried out.
[0018]
Further, on the front side of the frame 1, a cross shaft 21 made of a rod-shaped steel material is disposed in parallel with the frame, and both ends thereof are detachable from the frame 1 by brackets 22, so-called male. -Enables the hitch function. A tractor lower link 1 is mounted on the cross shaft 21.
[0019]
Further, the configuration of the knife beams 2 and 3 will be described. As shown in the figure, soil repellent plates 24 and 25 are disposed along the blade edges of the knife beams 2 and 3, and these soil repellent plates 24 have substantially the same curvature along the blade edges of the curved knife beam. It is formed with a curve. Along with excavation work of this subsoiler work machine, a part of the subsoil (see FIG. 1 and FIG. 3) is dug on the surface of the field to repel the soil. The soil thus raised is mixed with the soil (see FIG. 3), and the subsoil is regenerated.
Moreover, a crack is formed in the subsoil layer, and further air enters, water permeability and drainage are improved, and the root growth environment can be expanded.
[0020]
Next, the soil repellent plates 24 and 25 will be described. However, since both the soil repellent plates 24 and 25 are symmetrical, only one soil repellent plate 25 will be described as a representative, and description of the other soil repellent plate 24 will be omitted. As apparent from FIGS. 4 and 5, the soil repellent plate 25 is made of a long and flat reinforcing plate 28 and is made of a plastic having a curvature along the reinforcing plate 28. For example, four pairs of bolts 29a and nuts 29b (shown only in FIG. 3) are formed on the front surface of the reinforcing plate 28. ). The soil repellent main body plate 30 is made of plastics having a small amount of soil adhesion and excellent friction resistance in addition to the small friction with the soil as described above. The reinforcing plate 28 is made of a steel plate or the like because it requires rigidity while maintaining the shape of the soil repellent body plate.
[0021]
Further, as shown in FIG. 5, the soil repellent plate 25 composed of the reinforcing plate 28 and the soil repellent main body plate 30 has a lower end portion and a vicinity thereof as an excavation curved surface 25X, and a substantially central portion at a soil discharge curved surface 25Y. Further, the upper end portion and a portion in the vicinity thereof are an inverted curved surface 25Z. In the figure, the reversing curved surface 25Z is given a soil repellent curved surface, in other words, a slight twist, in order to give a dissecting function.
[0022]
The excavation curved surface 25X is a simple curved surface in a side view with respect to the work progress phrase, and as is clear from FIG. 3, when working on the subsoil layer, while excavating the subsoil, that is, in the field It pushes up toward the surface. In addition, the earth excavation curved surface 25Y is continuous to the excavation curved surface from the lower end toward the upper end, but gradually approaches an upright state, and a slightly smoothly twisted side surface is formed. A force to discharge the side soil while pushing up the subsoil continuously pushed up is given. Further, the reversing curved surface 25Z is a twisted curved surface facing further to the side than the soil discharging curved surface 25Y, and has a function of radiating and discharging the subsoil to the side in combination with the soil discharging curved surface 25Y.
[0023]
In this subsoiler work machine, the above-described soil repellent plates 24 and 25 are detachable from the knife beams 2 and 3. In addition, since the structure which enables attachment or detachment is the same also about both the soil repellent plates 24 and 25, only one soil repellent plate 25 is demonstrated.
[0024]
As shown in FIGS. 3 and 5, brackets 31, 32, and 33 are provided on the back surface of the reinforcing plate 28 of the soil repellent plate 25 at positions corresponding to the excavation curved surface 25 </ b> X, the soil discharge curved surface 25 </ b> Y, and the reverse curved surface 25 </ b> Z. It has been. These brackets are arranged in parallel by setting, for example, two steel plates formed in a rectangular shape at a predetermined interval, specifically, an interval corresponding to the thickness of the knife beam 3, and are welded to the reinforcing plate 28. It is fixed by.
Moreover, each steel rectangular plate which comprises each bracket 31,32,33 is made so that the main surface may be parallel with respect to the virtual same plane. This is for bringing the steel rectangular plates into contact with the side surfaces of the knife beam made of a single plate at the same time. The soil repellent plate 25 is attached to the knife beam 3 by bolts 35a, nuts 35b, and washers 35c through these brackets.
[0025]
Each bracket 31, 32 and 33 is formed with bolt insertion holes 31a, 32a and 33a through which the bolt 35a is inserted. The bolt insertion holes 31a and 32a formed in the two brackets 31 and 32 at the lower and intermediate positions are circular, but the bolt insertion holes 33a of the bracket 33 disposed on the upper side are elongated holes. By this long hole, the dimensional error of the soil repellent plate 25 and the knife beam 3 and the mounting error between them are absorbed.
On the other hand, as shown in FIG. 6, the knife beam 3 is also formed with bolt insertion holes 3a, 3b, 3c through which the bolt 35a is inserted.
[0026]
Next, a procedure for attaching the soil repellent plate 25 to the knife beam 3 will be described. First, as shown in FIG. 6, the soil repellent plate 25 is brought close to the knife beam 3 from the front side, and the brackets 31, 32, 33 are arranged along the front edge of the knife beam 3, in other words, along the blade edge. Can be fitted against In this state, the bolt insertion holes 31a, 32a and 33a of these brackets are made to coincide with the bolt insertion holes 3a, 3b and 3c of the knife beam 3, and the bolt 35a is inserted into these bolt insertion holes.
Then, the washer 35c is fitted and inserted into the tip thread portion of each bolt 35a, and the nut 35b is screwed and tightened. When the soil repellent plate 25 is removed from the knife beam 3, the reverse procedure is followed.
[0027]
In the above-described subsoiler work machine, only the knife beams 2 and 3 are used in the case of subsoil crushing and swelling / softening work in the field. When a part of the subsoil is mixed with the soil in addition to the subsoil crushing, the soil repellent plates 24 and 25 are attached to the knife beams 2 and 3, and the subsoil is excavated and repellent by the soil repellent plate. Prodigal. That is, this subsoiler work machine is used when only the subsoil crushing and softening functions are required.
When the purpose is to regenerate the subsoil layer, and further to soften the subsoil layer, the soil repellent plate 28 is attached to the knife beam. These function selections are performed by attaching and using the soil repellent board 28 to a basic subsoiler work machine. In this way, one model can be expected to have a function equivalent to two models.
[0028]
Furthermore, in this subsoiler work machine, when used as a basic subsoiler work machine, the knife beam has the greatest excavation resistance in the portion from the portion directly above the chisel to the curved surface 25Y portion, thereby causing significant wear and the knife beam. In spite of the fact that the main body has not reached the limit of use, the edge portion of the main body may be locally worn and cannot withstand use.
[0029]
That is, the knife keeper 37 is shown in FIG. The knife keeper 37 is for preventing local wear of the knife beam, and is one of the embodiments of the wear-resistant member. The knife keeper 37 is attached to the knife beams 2 and 3, and is caused by friction of the knife beam with the soil. It functions as a protective member that covers the position where wear is assumed most, that is, protects the lower end portion and the vicinity thereof. The knife keeper 37 is made of, for example, cast iron, and has a thick front edge protection portion 37a that covers the front edge of the knife beam, and a thin wall that covers both sides of the knife beam continuously to the front edge protection portion 37a. It has a triangular side surface protection portion 37b and a thick rear end portion 37c that is continuous with the side surface protection portion 37b and contacts the rear edge of the knife beam. That is, as a whole, it is a cylindrical member having a substantially triangular shape when viewed from the side, and is fitted on the knife beam.
A screw hole 37d is formed in the rear end portion 37c so as to penetrate substantially in the front-rear direction, and the tip of the screw portion of the bolt 38 screwed into the screw hole 37d is fixed to the knife beam by being pressed against the rear edge portion of the knife beam. Is done.
[0030]
The knife keeper 37 is attached to the knife beam when the subsoil is crushed. This prevents uneven wear of the knife beam, that is, a phenomenon in which only the lower end portion of the knife beam and the vicinity thereof are worn earlier than other portions. In the present embodiment, the knife keeper 37 is to be mounted on a relatively large subsoiler work machine, and a small subsoiler work machine is simply made of only a steel plate or round steel. The brackets 31, 32, and 33 do not need to be independent as in the mounting, and these can be made into a continuous box shape, and the box-shaped side surface can be bolted to the knife beam.
[0031]
In addition, although the subsoiler work machine mentioned above showed what has two knife beams, the number of knife beams and the form of the arrangement | positioning are changed according to the work capability of a subsoiler work machine.
[0032]
【The invention's effect】
As described above, in the subsoiler work machine according to the present invention, in addition to the subsoil crushing work, that is, the basic subsoiler work function, a part of the subsoil layer is lifted to the field surface, repelled, and released. In some cases, work is performed using a soil repellent board, and in the case of basic work of a subsoiler work machine, it is possible to extend the service life by using a wear-resistant member that prevents uneven wear. For example, it is possible to obtain a multi-function work machine with a single model so that the investment effect is effective and the management work is simplified.
[Brief description of the drawings]
FIG. 1 is a front view of a subsoiler work machine according to the present invention.
FIG. 2 is a plan view of the subsoiler work machine shown in FIG.
FIG. 3 is a right side view of the subsoiler work machine shown in FIG. 1;
4 is a view showing a modified example of the attachment structure of the knife holder to the frame which is the working machine main body of the subsoiler working machine shown in FIGS. 2 to 3. FIG.
FIG. 5 is a perspective view of a soil repellent plate provided in a subsoiler work machine according to the present invention.
FIG. 6 is a side view showing a situation in which a soil repellent plate is attached to the subsoiler work machine of the present invention.
7 is a view showing a state in which the knife keeper provided in the subsoiler working machine of the present invention is attached to the knife holder, and FIG. 7 (b) is a view taken along arrow BB in FIG. 7 (a); (C) of FIG. 7 shows CC arrow view in (a) of FIG.
FIG. 8 is a front view of a conventional subsoiler work machine.
9 is a plan view of the subsoiler work machine shown in FIG. 8. FIG.
10 is a right side view of the subsoiler work machine shown in FIG. 8. FIG.
[Explanation of symbols]
1 Frame 2, 3 Knife beam 4, 5 Knife holder 7, 8 Chisel 7a, 8a Wing 10 Fixture 19 Mast 21 Lever 24, 25 Earth repellent plate 37 Knife keeper

Claims (2)

Comprising a knife beam with a chisel to the lower end, the knife beam, in Sabusoira working machine fitted with a Naifukipa a wear-resistant member which is fitted on the knife beam,
The Naifukipa is attached to the knife beam in performing subsoil grinding, there is to function as at least covering protective member blade edge portion of the knife beam worn by friction with the soil, the leading edge of the knife beam a leading edge protective portion for covering a side surface protection of the substantially triangular continuously to the leading edge protective portion covering both sides of the knife beam, rear relative to the rear edge of the knife beam continuously in the side protection section it has a section, Sabusoira working machine, characterized in that fixed to the knife beam screwed a bolt to the rear end portion. The knife beam is formed with a bolt insertion hole for inserting a bolt for fixing a bracket made of two plates provided on the back surface of the reinforcing plate of the soil repellent plate in contact with both side surfaces of the knife beam. Sabusoira working machine according to claim 1, characterized in that it is.

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