JP2005348685A - Partially deep tilling machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a partially deep tilling machine for proper tilling operation. <P>SOLUTION: This partially deep tilling machine 1 tills soil to a deep position while moving by the traveling of a tractor. The partially deep tilling machine 1 is equipped with a first soil working plate part 13 and a second soil working plate part 18 having a lower end part adjacent to the upper end part of the first soil working plate part 13. The surface of the upper end part and the surface of the lower end part of the fist soil working plate part 13 are integrally equipped with laminar abrasion-resistant parts 31 and 32 harder to wear than the first working plate part 13. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a partial deep cultivator capable of appropriate tilling work.

Conventionally, as a partial deep cultivator that plows to the soil at a deep position in the field while moving by traveling of a tractor or other traveling vehicle, a metal first earth work plate portion that is a blade plate portion of a chisel, and a first earth work There is known a partial deep cultivator provided with a synthetic resin-made second earth work plate portion whose lower end portion is adjacent to the upper end portion of the plate portion (see, for example, Patent Document 1).
JP 2002-345303 A

  However, in the conventional partial deep cultivator, for example, when the second earth work plate portion made of synthetic resin is worn out by repeated use and its thickness becomes thin, and the second earth work plate portion is replaced with a new one. There is a possibility that a step is generated between the upper end portion of the first earth work plate portion and the lower end portion of the second earth work plate portion, and proper tilling work cannot be performed.

  This invention is made | formed in view of such a point, and it aims at providing the partial deep cultivator which can perform suitable tillage work.

  The partial deep cultivator according to claim 1 is a partial deep cultivator that cultivates to the soil at a deep position in the field while moving by traveling of the traveling vehicle, and includes a first soil working plate portion and a first soil working plate portion. A second earth work plate portion having a lower end adjacent to the upper end portion, and a wear-resistant portion that is provided on at least the upper surface of the first earth work plate portion and is less likely to wear than the first earth work plate portion. It is to be prepared.

  And since the wear-resistant part which is hard to wear compared with the 1st earth work board part is provided in the at least upper end part surface of the 1st earth work board part, the upper end part of the 1st earth work board part and the 2nd earth work The malfunction which a level | step difference produces between the lower end parts of a board part is suppressed.

  The partial deep cultivator according to claim 2 is the partial deep cultivator according to claim 1, wherein the wear-resistant portions are respectively provided on the upper end surface and the lower end surface of the first earth work plate portion.

  And since the wear-resistant part is each provided in the upper end part surface and lower end part surface of a 1st earth work board part, the improvement of the durability of a 1st earth work board part is achieved.

  The partial deep cultivator according to claim 3 is the partial deep cultivator according to claim 1 or 2, wherein the wear resistant part is an alloy having a hardness higher than that of the first earth work plate part or particles of a component capable of forming the alloy. It is a high hardness layer made of an alloy formed by applying a treatment agent composed of a mixture with a binder and then heating the treatment agent.

  The durability of the first earth work plate portion is effectively improved by the high hardness layer that is the wear resistant portion, and a step is formed between the upper end portion of the first earth work plate portion and the lower end portion of the second earth work plate portion. The malfunction which produces is suppressed effectively.

  According to the first aspect of the present invention, since the wear-resistant portion that is less likely to be worn than the first earth work plate portion is provided on at least the upper end surface of the first earth work plate portion, the first earth work plate portion The trouble which a level | step difference arises between the upper end part of this and the lower end part of a 2nd earth work board part can be suppressed, and an appropriate tilling work can be performed.

  According to the invention which concerns on Claim 2, since the wear-resistant part is each provided in the upper-end part surface and lower-end part surface of a 1st earth work board part, the improvement of durability of a 1st earth work board part is aimed at. Can do.

  According to the invention which concerns on Claim 3, durability of a 1st earth work board part improves effectively in the high hardness layer which is an abrasion-resistant part, and the upper end part of a 1st earth work board part and a 2nd earth work work The malfunction which a level | step difference arises between the lower end parts of a board part can be suppressed effectively.

  An embodiment of a partial deep cultivator of the present invention will be described with reference to the drawings.

  In FIG. 1, reference numeral 1 denotes a partial deep cultivator (chisel plow). The partial deep cultivator 1 is a towing type used by being connected to a tractor (not shown) as a traveling vehicle.

  Then, the partial deep cultivator 1 moves the farm field forward (in the direction of the arrow in the figure) by traveling (traction operation) of the tractor, while the soil (for example, the subsoil layer) at a deep position in the farm field (working depth is 30 to 45 cm, for example) It is a tilling work machine that plows up to the subsoil.

  The partial deep cultivator 1 cuts the subsoil layer and the cultivating layer of the field into a narrow vertical shape (working width is, for example, 7 to 8 cm) and lifts the cut soil to the upper part of the field surface to raise the surface of the field. It is one that mixes the lower and upper soils by turning it upside down, and has both the function of turning the plow upside down and subsoiling the subsoil.

  The partial deep cultivator 1 includes a machine frame 2 having a front portion coupled to a three-point link portion (worker lifting support device) at the rear of the tractor.

  The machine frame 2 has a main frame portion 3 that is elongated in the left-right direction. A tractor connection portion 4 that is a traveling vehicle connection portion protrudes forward from the main frame portion 3, and the tractor connection portion 4 is not shown in the figure. It is connected to the point link part. The tractor connecting portion 4 of the machine frame 2 is composed of a top mast 6 having a top pin 5 at the tip and a pair of left and right lower arms 8 having a lower pin 7 at the tip.

  Further, a substantially plate-like frame portion 9 that is slightly longitudinal in the front-rear direction and protrudes rearward from the substantially center in the left-right direction of the main frame portion 3 of the machine frame 2.

  And the upper end part of the support body (beam) 11 of the substantially curved and long plate shape in which the lower part side is inserted deeply in the soil of the field is detachably attached to the rear end part of the frame part 9 of the machine frame 2. Yes.

  On the front side of the lower end of the support 11 is a first earth work plate portion (blade plate portion) 13 which is a metal first cutting surface portion which cuts and lifts soil (mainly subsoil) in the field with a predetermined work width. A chisel body (a tip or the like) 14 is attached to a part (bolt and nut) 15 in a detachable manner, and a wing 16 is attached to the rear side of the lower end of the support 11.

  The support 11 is positioned along the front edge of the support 11 and receives the soil from the first soil work plate 13 with a predetermined work width and lifts it up to the vicinity of the field surface. A cutting body 19 having a second earth work plate portion (center board portion) 18 which is a second cutting surface portion made of a synthetic resin that is cut and lifted up to the vicinity of the field surface is attached to the front surface by a fixture (bolt and nut) 20 Removably attached.

  Further, the support 11 is a third soil which is a reverse surface portion made of a synthetic resin that accepts soil from the second soil work plate portion 18 with a predetermined work width, lifts it upward above the surface of the field, and flips it sideways. A reversing body 22 having a work plate portion (top board portion) 21 on the front surface portion is detachably attached by a fixture (bolt and nut) 23.

  In addition, the 1st earth work board part 13 and the 2nd earth work board part 18 are located adjacent to each other up and down, and the 2nd earth work board part 18 and the 3rd earth work board part 21 are located next to each other vertically. To do. Further, the second earth work plate 18 made of synthetic resin, which is hard to adhere to soil, is detachably provided on the metal reinforcement plate 25 of the cutting body 19 so as to overlap the reinforcement plate 25. The third earth work plate portion 21 made of synthetic resin which is difficult to adhere is detachably provided on the metal reinforcing plate portion 26 of the reversing body 22 so as to overlap the reinforcing plate portion 26.

  Here, as shown in FIGS. 2 and 3, the first earth work plate portion 13 of the chisel body 14 has a substantially rectangular shape in a plan view having a width direction in the left-right direction, and is positioned in a forward and downward inclined shape. . Further, the lower end (front end) of the first earth work plate portion 13 is formed in a predetermined thin blade shape whose thickness is smaller toward the lower end edge, and the front end edge which is the lower end edge is convex toward the front as seen from the plane. It is an approximate arc.

  Further, thin layered wear-resistant portions 31 and 32 that are less likely to wear than the first earth work plate portion 13 are welded to the upper surface and the lower surface of the first earth work plate portion 13 made of metal, respectively. Are integrally provided.

  That is, a recessed portion 33 is formed on the surface of the lower end portion of the first earth work plate 13 facing obliquely upward, and a layered wear-resistant portion 32 is provided in the recessed portion 33 so as to fill the recessed portion 33. Thus, the surface of the wear-resistant part 32 and the intermediate part surface of the first earth work plate part 13 are located on the same plane.

  Similarly, a recessed portion 34 is formed on the upper end surface of the first earth work plate portion 13 facing obliquely upward in front, that is, the adjacent end surface adjacent to the lower end portion of the second earth work plate portion 18. A layered wear-resistant portion 31 is provided so as to fill the recessed portion 34 in the portion 34, and the surface of the wear-resistant portion 31 and the intermediate portion surface of the first earth work plate portion 13 are located on the same plane.

  The thin layered wear-resistant portions 31 and 32 provided at two locations of the first earth work plate portion 13 are, for example, alloys having higher hardness than the first earth work plate portion 13 or components capable of forming this alloy. It is a high-hardness layer made of an alloy constituted by applying a treatment agent composed of a mixture of particles and a binder and then heating the treatment agent.

  The most suitable alloy for constituting the high hardness layer is a ternary alloy composed of tungsten, carbon and iron. The high hardness layer made of such an alloy has, for example, a desired thickness of a processing agent comprising an alloy powder previously melted and then granulated to an appropriate particle size, and a binder that decomposes and gasifies upon heating. It can be formed by applying to the surface of 1 earth work board part 13 and sintering or melting alloy powder mutually in a short time. As a means for heating the treatment agent to a high temperature in a short time, a high-frequency induction heating means is preferable. In this case, an alloy can be used without greatly changing the metal structure previously given to the first earth work plate portion 13. The particles can be heated to a predetermined temperature. By this heat treatment, the alloy particles are bonded to each other by partial or total melting to form a high hardness layer having high hardness. Further, during this heating, the binder is thermally decomposed and gasified, and is released from the formed high hardness layer.

  As is clear from FIGS. 2 and 3, a pair of left and right mounting plate portions 37 connected by the connecting plate 36 protrude rearward from the upper rear surface of the first earth work plate portion 13 of the chisel body 14. Both attachment plate portions 37 are detachably attached to the front side of the lower end portion of the support 11.

  Next, the operation and the like of the one embodiment will be described.

  When plowing using the partial deep cultivator 1, the partial cultivator 1 is connected to the three-point link portion of the tractor by connecting the tractor connection portion 4 of the machine frame 2 to the three-point link portion of the tractor (not shown). Mounting. Thereafter, by operating the three-point link portion of the tractor and lowering the partial deep cultivator 1 by a predetermined amount, the lower portion of the support 11 is inserted deeply into the soil of the field.

  In this state, when the partial cultivator 1 is moved forward in the traveling direction by moving the tractor forward, the first earth work plate portion 13 and the wear-resistant portions 31 and 32 of the chisel body 14 and the second of the cutting body 19 are moved. The soil in the field is cut and lifted by the earth work board 18. That is, the soil in the field is cut smoothly by the first earth work plate part 13, the wear-resistant parts 31, 32 and the second earth work plate part 18 constituting one working surface part having a substantially curved surface and no step. Lifted to. Then, the raised soil is reversed and released, for example, toward the right side in the traveling direction by the third earth work plate portion 21 of the reversing body 22.

  Here, as shown in FIG. 4, when the partial deep cultivator 1 is repeatedly used, a portion of the first earth work plate portion 13 of the chisel body 14 where the wear-resistant portions 31 and 32 are not provided on the upper surface which is the surface thereof. However, due to wear due to contact with soil or stone, the plate thickness is reduced.

  However, in the portion of the first earth work plate portion 13 where the wear resistant portions 31 and 32 are provided on the upper surface which is the surface thereof, the plate thickness dimension is maintained for a long time due to the presence of the wear resistant portions 31 and 32. For this reason, the malfunction that a level | step difference arises between the upper end part of the 1st earth work board part 13, and the lower end part of the 2nd earth work board part 18 is suppressed. Further, the lower end portion of the first earth work plate portion 13 remains in a predetermined thin blade shape.

  And according to the said partial deep cultivator 1, the wear-resistant parts 31 and 32 which are hard to wear compared with the 1st earth work board part 13 are provided in the upper end part surface and lower end part surface of the 1st earth work board part 13. Therefore, it is possible to suppress a problem that a step is generated between the upper end portion of the first earth work plate portion 13 and the lower end portion of the second earth work plate portion 18, and a predetermined thin blade at the lower end portion of the first earth work plate portion 13. The shape can be maintained for a long time, so that proper tillage work can be performed.

  In the above embodiment, the configuration in which the wear-resistant portions 31 and 32 made of a high hardness layer are provided on the upper end surface and the lower end surface of the first earth work plate portion 13 has been described. For example, FIG. 5 and FIG. As shown in FIG. 6, even if the wear-resistant portion 31 is provided only on the surface of the upper end portion of the first earth work plate portion 13, the upper end portion of the first earth work plate portion 13 and the lower end of the second earth work plate portion 18. The malfunction which a level | step difference arises between parts can be suppressed appropriately.

  Further, the wear-resistant parts 31 and 32 are not limited to a high hardness layer made of a predetermined alloy, and any material can be used as long as it is less likely to wear than the first earth work plate part 13, for example, a synthetic resin or the like. It may be composed of

  Furthermore, it is not limited to the structure provided with the cutting body 19 and the reversing body 22 which are separate from each other. For example, the second earth work plate portion 18 and the third earth work plate portion 21 are made of one piece made of synthetic resin or metal. You may make it comprise with a plate-shaped torsion board.

  Further, the partial deep cultivator 1 may have a plurality of continuous configurations including a plurality of supports 11 or the like, or may have a configuration in which the support 11 vibrates in the front-rear direction by power from the tractor side.

It is a side view of one embodiment of the partial deep cultivator of the present invention. It is a top view of the 1st earth work board part of a partial deep cultivator same as the above. It is a side view of a 1st earth work board part same as the above. It is a side view which shows the state which the 1st earth work board part same as the above was worn out. It is a top view of the 1st earth work board part of the partial deep cultivator which concerns on other embodiment of this invention. It is a side view of a 1st earth work board part same as the above.

Explanation of symbols

1 partial deep cultivator
13 First earth work board
18 Second earth work board
31, 32 Wear resistant parts

Claims (3)

It is a partial deep tiller that plows to the soil in the deep position of the field while moving by traveling of the traveling vehicle,
A first earth work board,
A second earth work plate portion having a lower end adjacent to the upper end portion of the first earth work plate portion;
A partial deep cultivator comprising: an abrasion-resistant portion that is provided on at least an upper end surface of the first earth work plate portion and is less likely to wear than the first earth work plate portion. The partial deep cultivator according to claim 1, wherein the wear-resistant portion is provided on each of an upper end surface and a lower end surface of the first earth work plate portion. The wear-resistant part is constituted by applying a treatment agent composed of an alloy having a hardness higher than that of the first earth work plate part or a mixture of particles of components capable of forming the alloy and a binder, and then heating the treatment agent. The partial deep cultivator according to claim 1, wherein the partial deep cultivator is a high-hardness layer made of an alloy that has been made.

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