JP2021058155A - Implement - Google Patents

Abstract

To provide an agricultural implement having a function for suppressing soil adhesion and rust formation.SOLUTION: An agricultural implement includes a first metal member, and a second metal member fixed attachably to/detachably from the first metal member through an insulator, to which a voltage is applied to and from the first metal member. The ionization tendency of a material constituting the second metal member is larger than the ionization tendency of a material constituting the first metal member.SELECTED DRAWING: Figure 2

Description

The present invention relates to a working machine. In particular, the present invention relates to a working machine having a function of suppressing the adhesion of soil and the generation of rust.

Rotor work machines and ridge coating machines are known as work machines that support agricultural work such as tillage work for cultivating fields and ridge preparation work for forming ridges. Since these agricultural work machines perform the work while contacting the soil in the field, a large amount of soil adheres to the portion that comes into contact with the soil as the work progresses. The soil adhering to the farm work machine can be a cause of malfunctions such as hindering normal work and causing damage to the farm work machine. Therefore, the worker had to perform the work of removing the soil on a regular basis, which hindered the efficiency of the agricultural work.

In order to reduce such soil removal work, attempts have been made to remove the soil adhering to the agricultural work machine by energizing. For example, in Patent Document 1 and Patent Document 2, an electrode is provided via an insulator for a cover body that prevents soil from being scattered by a tiller rotor in a rotary working machine, and a voltage is applied between the cover body and the electrode. This describes a technique for suppressing the adhesion of soil to the cover body.

Japanese Unexamined Patent Publication No. 3-201901 Japanese Unexamined Patent Publication No. 3-201902

The techniques described in Patent Documents 1 and 2 were developed from the viewpoint of suppressing the adhesion of soil to the cover body, and did not have the viewpoint of suppressing the generation of rust, that is, preventing corrosion. Therefore, the techniques described in Patent Documents 1 and 2 have room for further improvement.

An object of the present invention is to provide an agricultural work machine having a function of suppressing the adhesion of soil and the generation of rust.

The working machine according to the embodiment of the present invention is detachably fixed to the first metal member via an insulator, and a voltage is applied between the first metal member. The material having the second metal member and constituting the second metal member has an ionization tendency higher than that of the material constituting the first metal member.

The voltage may be applied so that the second metal member has a higher potential than the first metal member.

In the working machine, the first metal member may be a ridge-prepared portion for arranging the soil in the field, and the second metal member is provided on the surface of the ridged portion in contact with the soil. May be good. At this time, the ridge portion may be made of stainless steel.

The working machine may further include a tiller rotor having a plurality of tiller claws. In this case, the first metal member may be a cover member having a surface facing the tilling rotor, and the second metal member may be provided on the surface of the cover member facing the tilling rotor. ..

Further, when the working machine includes a tilling rotor, the first metal member may be a claw shaft constituting the tilling rotor.

The first metal member may be made of steel or cast iron.

The second metal member may be aluminum, magnesium, zinc, or an alloy containing aluminum, magnesium, or zinc.

The working machine may further include a voltage applying means capable of applying a voltage to the second metal member. At this time, the voltage applying means may be a battery or a voltage generating unit that generates a voltage from the electric energy generated by using the working machine.

According to the present invention, it is possible to provide a working machine having a function of suppressing the adhesion of soil and the generation of rust.

It is a top view which shows the structure of the state which connected the ridge coating machine of one Embodiment of this invention to a traveling machine body. (A) is a side view schematically showing the configuration of the ridge coating machine according to the embodiment of the present invention, and (B) is a side view showing the configuration of the ridge-adjusting body included in the ridge coating machine. (A) is a cross-sectional view of the ridges shown in FIG. 2 (B) cut along A1-A2, and (B) is a cross-sectional view cut along B1-B2. (C) is a schematic diagram for explaining a mechanism for suppressing the adhesion of soil and the generation of rust in the ridge coating machine according to the embodiment of the present invention. (A) and (B) are side views which show the modification of the ridge trimming body in the ridge coating machine of one Embodiment of this invention. (A) is a rear view of the cover member in the ridge coating machine of one embodiment of the present invention, and (B) is a front view of the cover member. (A) is a cross-sectional view of the back plate shown in FIG. 5 (A) cut along C1-C2, and (B) is a cross-sectional view cut along D1-D2. (A) is a rear view showing the configuration of the rotary working machine according to the embodiment of the present invention, and (B) is a right side view showing the configuration of the rotary working machine. It is sectional drawing which shows the structure of the electrode in the rotary working machine of one Embodiment of this invention. (A) is an enlarged view which shows the structure of a part of the claw shaft in the rotary working machine of one Embodiment of this invention, and (B) is the cross-sectional view which looked at the claw shaft along the axial direction.

Hereinafter, the working machine according to the embodiment of the present invention will be described with reference to the drawings. However, the working machine of the present invention can be implemented in many different modes, and is not construed as being limited to the contents of the examples shown below.

In the drawings referred to in one embodiment of the present invention, the same parts or parts having similar functions may be designated by the same reference numerals or similar symbols, and the repeated description thereof may be omitted. Further, in order to clarify the explanation, the drawings may schematically represent the configuration of each part as compared with the actual embodiment, but this is merely an example and does not limit the interpretation of the present invention. ..

In the specification of the present application and the scope of claims (hereinafter referred to as "the present specification, etc."), "upper" indicates a direction away from the field vertically, and "lower" indicates a direction toward the field vertically. Further, "front" indicates the direction in which the traveling machine is located with respect to the work machine, and "rear" indicates the direction 180 ° opposite to the front. Further, "left" indicates the left when facing the direction in which the traveling machine is located with respect to the working machine, and "right" indicates the direction 180 ° opposite to the left.

In the present specification and the like, the "voltage" corresponds to the "potential" based on the ground potential (earth). In other words, the expressions "applying voltage" and "supplying voltage" mean forming a predetermined potential difference between the potential of a metal member (components of agricultural work machines, electrodes, etc.) and the ground potential. To do.

<First Embodiment>
The configuration of the ridge coating machine 100 having a function of preventing the adhesion of soil and the generation of rust as the working machine according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3.

(1-1. Configuration of ridge coating machine 100)
FIG. 1 is a top view showing a configuration in which the ridge coating machine 100 is connected to the traveling machine body 50. FIG. 2A is a side view showing the configuration of the ridge coating machine 100.

As shown in FIGS. 1 and 2 (A), the ridge coating machine 100 includes a mounting portion 110, a connecting portion 150, a ridge preparation body 120, and a soil filling portion 140a. In one embodiment of the present invention, the ridged body 120 and the soil filling portion 140a may be collectively referred to as a working portion.

The mounting portion 110 includes lower link connecting portions 111a and 111b, a top link connecting portion 112, a hitch frame 113, and an input shaft 114, and is mounted on a link mechanism 60 (for example, a three-point link mechanism) of a traveling machine body 50 such as a tractor. Will be done. The ridge coating machine 100 and the traveling machine body 50 may be connected via an auto hitch frame attached to a three-point link of the traveling machine body 50. The hitch frame 113 includes a mechanism for transmitting the power transmitted to the input shaft 114 to the transmission mechanism of the connecting portion 150, and is connected to the connecting portion 150. The input shaft 114 is connected to the PTO shaft of the traveling machine body 50 via a transmission joint such as a universal joint, and power is transmitted from the traveling machine body 50.

The connecting portion 150 includes a link member 131, an offset frame 132, an offset control cylinder 133, and a working direction control cylinder 134. Further, the connecting portion 150 is a member whose one end is supported by the hitch frame 113 of the mounting portion 110 and the other end is attached to the ridged body 120 and the soil filling portion 140a, and the mounting portion 110, the ridged body 120 and the soil filling portion 150. 140a are connected. The link member 131 is a member whose one end is rotatably supported with respect to the mounting portion 110 and the other end is rotatably supported with respect to the rear frame 170, and controls the working position of the ridge 120. It is a member. The offset frame 132 includes a transmission means for transmitting power to the ridge 120, and one end is attached to the hitch frame 113 and the other end is connected to the working portion.

The offset frame 132 and the link member 131 are arranged in parallel, and the hitch frame 113 and the rear frame 170 form a parallel link mechanism. With this parallel link mechanism, the working portion can be offset and moved. That is, the ridge coating machine 100 can be offset from the traveling machine body 50 to an arbitrary position to form ridges. The working direction of the ridge 120 does not change with respect to the swing of the connecting portion 150. That is, the offset movement of the ridge 120 can be performed while maintaining the work surface for arranging the ridges.

Further, in one embodiment of the present invention, a parallel link mechanism is adopted in order to facilitate control of the offset control cylinder 133 and the working direction control cylinder 134, but as an embodiment of the present invention, the offset is used. It is also possible to configure the control cylinder 133 and the work direction control cylinder 134 to be controlled independently. Even in the case of an embodiment in which such a parallel link mechanism is not configured, the same control as described below is possible.

The ridge 120 is provided via a substantially truncated cone-shaped slope ridge 121 rotatably supported around the rotation axis R120 and a mounting base (not shown) at the top of the slope ridge 121. It is provided with an attached upper surface ridge portion 122. The ridge 120 is configured so that rotational power is transmitted via a power transmission mechanism in a transmission support case (not shown) arranged below the offset frame 132, and the side of the traveling machine body 50. Form ridges in a square position. Specifically, the slope ridged portion 121 and the upper surface ridged portion 122 are members for ridged soil in the field. The slope ridge portion 121 contacts the old ridge or the supplied soil that has been cut down by the soil filling portion 140 or the like described later to ridge the slope of the new ridge, and the upper surface ridge portion 122 is the soil filling portion described later. The upper surface of the new ridge is trimmed in contact with the old ridge or the supplied soil that has been cut down by the part 140 or the like.

The slope ridge portion 121 of the present embodiment is composed of a plurality of ridge plates 171. The plurality of ridge plates 171 are metal members made of, for example, stainless steel. A plurality of electrodes 172 are provided on each of the plurality of ridge plates 171. The plurality of electrodes 172 are metal members made of, for example, aluminum, magnesium, zinc, or an alloy containing these metals. The plurality of electrodes 172 are detachably fixed to the surface side of the slope ridged portion 121, that is, the side of the slope ridged portion 121 in contact with the soil via an insulator (not shown). ..

As will be described later, in the ridge coating machine 100 of the present embodiment, a voltage is applied between the slope ridge portion 121 and the electrode 172 to apply a voltage to the surface of the slope ridge portion 121 that comes into contact with the soil. Soil adhesion is suppressed. Further, in the ridge coating machine 100, the ionization tendency of the metal material constituting the electrode 172 is larger than the ionization tendency of the metal material constituting the slope ridge portion 121. Therefore, by constructing a circuit in which the electrode 172 is used as an anode and the ridge plate 171 is used as a cathode, the electrode 172 is corroded, while the ridge plate 171 is relatively protected from corrosion. That is, the generation of rust on the slope ridge portion 121 is suppressed. The specific configuration of the ridge 120 will be described later.

The power supply unit 200 has a function of applying a voltage between the ridge plate 171 and the electrode 172. The positive electrode of the power supply unit 200 is electrically connected to the electrode 172 via the first wiring 202. The negative electrode of the power supply unit 200 is electrically connected to the ridge plate 171 via the second wiring 204. In this case, since the ridge-adjusting body 120 is a rotating body that rotates during the ridge coating work, the electrical connection between the power supply unit 200 and the ridge-adjusting plate 171 and the electrical connection between the power supply unit 200 and the electrode 172 A connection method using a known slip ring (a rotating connector capable of transmitting electric power or an electric signal from the outside to a rotating body) may be used. Since the connection method using the slip ring is a known technique, the description thereof is omitted here.

The power supply unit 200 may be provided in the ridge coating machine 100. In this case, the power supply unit 200 may be, for example, a battery or a voltage generation unit that generates a voltage from the electric energy generated by using the ridge coating machine 100. However, not limited to the above-mentioned example, the power supply unit 200 may be provided in the traveling machine body 50. When the power supply unit 200 is provided in the traveling machine body 50, the power supply unit 200 may be a battery or a voltage generating unit that generates a voltage from the electric energy generated by the traveling machine body 50. Good. In this case, the first wiring 202 and the second wiring 204 are drawn into the ridge coating machine 100 from the power supply unit 200 provided in the traveling machine body 50, and are connected to the ridge plate 171 and the electrode 172. Become.

In the present specification, a means having a function of applying a voltage between two metal members such as the above-mentioned battery and a voltage generating unit may be referred to as a voltage applying means. Further, not limited to the battery and the voltage generating unit, if the means has a function of applying a voltage between two metal members, for example, a terminal portion or wiring connected to the metal member may be called a voltage applying means. ..

The configuration in which the voltage is applied from the power supply unit 200 to the ridge plate 171 and the electrode 172 is not limited to the configuration described with reference to FIG. 2 (A). That is, as long as a circuit having the electrode 172 as the anode and the ridge plate 171 as the cathode can be configured, any means for applying a voltage between the electrode 172 and the ridge plate 171 may be used.

The soil filling portion 140 digs up the soil in the field, or shave the soil in the field, crushes the digged soil, the shaving soil, and the rolled up soil, and digs up the soil in front of the ridge 120. Supply soil. For example, as the soil filling portion 140, it is possible to adopt a rotary tilling type processing mechanism including a tilling rotor 140a having a plurality of tilling claws 141 and a cover member 140b for returning the soil wound up on the tilling rotor 140a to the field. it can.

Further, a position sensor 160 as a working position detecting means for detecting the working position of the ridged body 120 may be provided in the vicinity of the ridged body 120. The position sensor 160 is arranged behind the ridge 120 from a support case (not shown) via a mounting arm 161. The position sensor 160 is composed of a sensor rod 162 whose one end is fixed to a potentiometer. The distance between the slope ridge portion 121 and the slope of the ridge can be detected by the position of the sensor rod 162. Further, the position sensor 160 may be an image sensor for image recognition. In this case, for the position sensor 160, for example, a distance measuring image sensor is used.

Further, an angle sensor (not shown) may be provided as a working direction detecting means for detecting the working direction of the ridge 120. In this case, it is preferable that the angle sensor does not detect the relative directional change of the ridge 120 with respect to the connecting portion 150, but detects a single change of the ridge 120. For example, as an angle sensor, a gyro sensor may be arranged around the transmission shaft in the offset frame 132.

(1-2. Composition of ridged body 120)
A specific configuration of the ridge 120 will be described with reference to FIGS. 2 and 3. FIG. 2B is a side view showing the structure of the ridged body 120.

As shown in FIG. 2B, the ridge-adjusting body 120 performs an operation of arranging the ridges in contact with the soil while rotating in the direction of the arrow about the rotation axis R120. That is, the ridge body 120 rotates and smears the ridges with soil to prepare the ridges. The ridged body 120 includes a slope ridged portion 121 and an upper surface ridged portion 122 bolted (not shown) to the slope ridged portion 121. The slope ridge portion 121 includes a ridge plate 171, an electrode 172, a first insulator 173, and a second insulator 174. In the example shown in FIG. 2B, the slope ridge portion 121 is configured by connecting a plurality of ridge plates 171. For example, the slope ridge portion 121 is configured by connecting eight ridge plates 171. The plurality of ridge plates 171 are directly connected to each other by welding, for example, each of the plurality of ridge plates 171.

Each of the plurality of ridge plates 171 includes a plurality of electrodes 172. Each of the plurality of electrodes 172 is provided on the surface of the ridge plate 171 that comes into contact with the soil (soil-coated surface, which will be described later). Further, in the present specification and the like, a plurality of electrodes 172 may be collectively referred to as an electrode group. The areas of the ridge plate 171 and the electrode 172 can be appropriately changed according to the arrangement of the electrode 172 with respect to the ridge plate 171 and the voltage applied between the ridge plate 171 and the electrode 172.

Further, the distance between the two adjacent electrodes 172 may be the same or substantially the same in the side view. When the distances between two adjacent electrodes 172 are the same or substantially the same, the electric field generated between the ridge plate 171 and each electrode 172 can be made uniform, so that the ridge plate 171 and the electrode 172 can be made uniform. An electric current can be applied evenly to the soil adhering to the soil. As a result, it is possible to prevent soil from adhering to the slope ridge portion 121.

Further, in one embodiment of the present invention, an example in which the shape of the electrode 172 is a polygon (specifically, a quadrangle) is shown, but the present invention is not limited to this example. For example, the shape of the electrode 172 may have a curved portion, or may be elliptical, for example. Further, the arrangement of the electrodes 172 is not limited to the arrangement shown in FIG. 2 (B). The shape and arrangement of the electrodes 172 may be appropriately determined according to the soil quality of the field, the moisture conditions, the configuration of the ridge coating machine 100, and the like.

Further, the slope ridge portion 121 in one embodiment of the present invention may be covered with a ring-shaped member (not shown). The ring-shaped member is provided, for example, so as to cover the outermost edge of the slope ridge portion 121 shown in FIG. 2 (B). By covering the slope ridge portion 121 with a ring-shaped member, the edge of the slope ridge portion 121 is protected, and wear or damage when the slope ridge portion 121 comes into contact with the ground can be prevented. it can.

Further, in FIG. 2, an example in which the slope ridge portion 121 is configured by connecting eight ridge plates 171 is shown, but the number of slope ridge portions 121 is the same as the number shown in FIG. There are no restrictions. The ridge plate 171 may be configured by, for example, using a combination of two types of ridge plates as one unit and connecting the two types of ridge plates alternately. Further, the slope ridge portion 121 can be integrally formed, and for example, an integrated press structure in which one plate is press-processed may be used.

In one embodiment of the present invention, each of the plurality of ridge plates 171 is directly welded by welding, but the present invention is not limited to this configuration. For example, each of the plurality of ridge plates 171 may be indirectly connected via a connecting member. In this case, each ridge plate 171 and the connecting member may be welded. Further, although welding has been described as an example of the joining means, the present invention is not limited to this configuration. It is also possible to connect the ridge plates to each other by joining them using other fixing members such as bolts and nuts.

Subsequently, the cross section of the ridge 120 will be described with reference to FIGS. 3 (A) and 3 (B). FIG. 3A is a cross-sectional view of the slope ridge portion 121 shown in FIG. 2B cut along A1-A2. FIG. 3B is a cross-sectional view of the slope ridge portion 121 shown in FIG. 2B cut along B1-B2.

As shown in FIG. 3A, the slope ridged portion 121 includes, for example, a plurality of ridged plates 171 and a plurality of electrodes 172, a first insulator 173, a second insulator 174, and a fixing member 175. , And a terminal portion 176.

The ridge plate 171 is provided with, for example, a recess 171a, and an opening 171b for attaching an electrode 172 is provided inside the recess 171a. The first insulator 173 and the second insulator 174 are laminated and arranged inside the recess 171a so as to sandwich the end of the opening 171b. The electrode 172 is arranged inside the recess 171a so as to face the terminal portion 176 via the first insulator 173 and the second insulator 174, and is detachably fixed by the fixing member 175. In FIG. 3A, the fixing member 175 is, for example, a conductive bolt 175-1 and a nut 175-2.

As shown in FIG. 3A, since the first insulator 173 and the second insulator 174 are laminated so as to sandwich the end portion of the opening 171b, the electrode 172 and the terminal portion 176 are separated from each other. It is completely insulated and does not short-circuit. Therefore, if a positive voltage is applied to the electrode 172 via the terminal portion 176 and a negative voltage is applied to the ridge plate 171 via the terminal portion 178 described later using FIG. 3 (B), the electrode 172 can be formed. A circuit having an anode and a ridge plate 171 as a cathode can be configured.

Further, as described above, the electrode 172 is provided on the surface of the ridge plate 171 that comes into contact with the ridge (that is, soil). The surface that comes into contact with such ridges is also called a soil-coated surface. In the present embodiment, as shown in FIG. 3A, the surface of the electrode 172 is configured to be substantially flush with (or slightly dented) the soil-coated surface 171c of the ridge plate 171. Has been done. Further, in the present embodiment, the recess 172a is also provided on the surface of the electrode 172, and the top of the bolt 175-1 is arranged inside the recess 172a. That is, the surface of the top of the bolt 175-1 is also configured to be substantially flush with the soil-coated surface 171c of the ridge plate 171. That is, the slope ridge portion 121 of the present embodiment has a structure in which the unevenness is reduced as much as possible even though the electrode 172 is provided on the soil-coated surface 171c of the ridge plate 171. .. As a result, even if the electrode 172 is attached to the ridge plate 171, it is possible to prevent the deterioration of the ridge condition due to the electrode 172.

In order to prevent the deterioration of the ridge-adjusted state, the electrode 172 and the electrode 172 and the soil-coated surface 171c of the ridge-prepared plate 171 that abuts on the ridge and coats the ridge with soil at least during the ridge-preparing work The surface of the fixing member 175 (in the case of this embodiment, the top of the bolt 175-1) may be substantially flush with each other. The slope ridged portion 121 may be configured by providing a plurality of uniform steps in the circumferential direction, but in this case, the entire surface of the slope ridged portion 121 (plurality of ridged plates 171) is coated with soil. It does not function as a built-in surface 171c. For example, when the slope ridge portion 121 is composed of a plurality of ridge plates 171, one end of the ridge plate 171 is bent so as to have a predetermined step, and the bent portion is bent to be adjacent to the ridge plate. By joining with one end of 171 that is not bent, a plurality of stepped slope ridges 121 can be formed. In this case, each ridge plate 171 is configured to gradually protrude with respect to the ridge toward the upstream side in the rotation direction. It is conceivable that the stepped portion of the slope ridged portion 121 with such a step may have a portion that does not function as the soil-coated surface 171c. When the electrode is arranged on the portion of the slope ridge portion 121 that does not function as the soil-coated surface 171c, the electrode 172, the first insulator 173, and the fixing member 175 are configured so as not to come into contact with the ridge during the ridge coating operation. As long as they are protruding from the ridge plate 171. In the present embodiment, the fixing member 175 and the electrode 172 are formed as separate bodies, but the fixing member 175 may be integrated with the electrode 172.

Further, the terminal portion 176 is detachably fixed to the electrode 172 by the fixing member 175. Specifically, the terminal portion 176 is provided between the second insulator 174 and the nut 175-2. The terminal portion 176 is electrically connected to the first wiring 202 shown in FIG. 2A and is configured to be supplied with a voltage from the power supply portion 200. The electrode 172 may be supplied with a voltage from the power supply unit 200 so as to have a higher potential than that of the ridge plate 171. At least one of the electrodes 172 can be attached to and detached from the terminal portion 176 by one fixing member 175. It suffices if it is fixed to. In the present specification and the like, the electrode 172, the fixing member 175, and the terminal portion 176 may be collectively referred to as the first electrode, and either the electrode 172 or the terminal portion 176 may be referred to as the first electrode. is there.

Each of the plurality of electrodes 172 provided on the slope ridge portion 121 is attached to the ridge plate 171 with the same configuration as the electrode 172 shown in FIG. 3 (A).

In one embodiment of the present invention, the electrode 172 is detachably fixed to the ridge plate 171 with bolts 175-1 and nuts 175-2 via the first insulator 173 and the second insulator 174, and is replaced. It is configured to be possible. As described above, the slope ridge portion 121 of the present embodiment constitutes a circuit in which the electrode 172 is used as an anode and the ridge plate 171 is used as a cathode. Therefore, not only is it difficult for soil to adhere to the surface of the slope ridged portion 121, but also the electrode 172 is preferentially corroded, so that the ridged plate 171 is relatively protected from corrosion. Therefore, when the electrode 172 becomes smaller or deteriorates due to corrosion, making it difficult for current to flow through the soil, or when the electrode 172 is damaged, making it difficult to supply voltage to the electrode 172. , Electrode 172 can be replaced. As a result, according to the configuration of the present invention, it is not necessary to replace the set of slope ridges 121, so that it is possible to provide a ridge coating machine provided with ridges capable of suppressing the cost of replacement.

In one embodiment of the present invention, an example is shown in which the ridge plate 171 and the electrode 172 are electrically insulated from each other by the first insulator 173 and the second insulator 174, which are shown here. It is not limited to the configuration. For example, the ridge plate 171 and the electrode 172 may be electrically insulated from each other by three or more insulators, or may be electrically insulated from each other only by the first insulator 173. Further, the first insulator 173 and the second insulator 174 may be, for example, a rubber-like member or an insulating sheet such as a resin insulating film. Further, only the surface of the electrode 172 facing the ridge plate 171 may be coated with a resin insulating film.

FIG. 3B is a cross-sectional view of a portion of the slope ridge portion 121 not provided with the electrode 172. Specifically, FIG. 3B is a cross-sectional view of a connecting portion between the slope ridge portion 121 and the second wiring 204 shown in FIG. 2A. As shown in FIG. 3B, the slope ridge portion 121 has, for example, a plurality of ridge plate 171, a fixing member 177, and a terminal portion 178. In this case, the terminal portion 178 is electrically connected to the second wiring 204. The fixing member 177 may be installed on the ridge plate 171 or one on the slope ridge 121.

In FIG. 3B, the fixing member 177 is composed of, for example, a welding bolt 177-1 and a nut 177-2. The top of the welding bolt 177-1 is welded to the ridge plate 171. Further, the plurality of ridge plates 171 are welded to each other. The terminal portion 178 is electrically connected to the second wiring 204 shown in FIG. 2A, and is configured to be supplied with a voltage from the power supply portion 200. A voltage may be applied to the ridge plate 171 so that the potential is lower than that of the electrode 172, and one terminal portion 178 can be attached and detached by one fixing member 177 at at least one position of the ridge plate 171. It suffices if it is fixed. In the present specification and the like, the ridge plate 171, the fixing member 177, and the terminal portion 178 may be collectively referred to as a second electrode, and either the ridge plate 171 or the terminal portion 178 is referred to as a second electrode. Sometimes called.

In one embodiment of the present invention, the method of applying a voltage to the ridge plate 171 and the electrode 172 is to apply a voltage higher than that of the ridge plate 171 to the electrode 172, and use soil as a medium to apply the voltage from the electrode 172 to the ridge plate 171. Any method can be used as long as it is possible to construct a circuit in which a current flows toward. For example, the ridge plate 171 may be used as the ground voltage, and a positive voltage may be applied to the electrode 172. Further, for example, a pulsed voltage may be applied to the ridge plate 171 and the electrode 172, or a DC voltage may be applied to the ridge plate 171 and the electrode 172. The method of applying the voltage to the ridge plate 171 and the electrode 172 may be appropriately determined in consideration of the soil quality of the field, the moisture condition, the configuration of the ridge coating machine, and the like.

The voltage applied between the ridge plate 171 and the electrode 172 may be variable. For example, a variable voltage device is provided between the wiring connecting the power supply unit 200, the ridge plate 171 and the electrode 172 (that is, the variable voltage device is interposed in the first wiring 202 and the second wiring 204), and the power supply is supplied. It is also possible to adjust the voltage applied between the portion 200, the ridge plate 171 and the electrode 172. In the present specification and the like, the above-mentioned variable voltage device may also be referred to as a voltage applying means.

As described above, in the ridge coating machine 100 according to the embodiment of the present invention, a voltage is applied between the ridge plate 171 and the electrode 172 constituting the ridge body 120 (specifically, the slope ridge portion 121). When applied, a circuit is constructed in which a current flows through the soil adhering to the ridge plate 171. When such a circuit is configured, it is possible to suppress the adhesion of soil to the ridge plate 171 based on the mechanism described later. Further, in the present embodiment, as the electrode 172, an electrode made of a metal material having a higher ionization tendency than the ridge plate 171 is used, and a circuit having the electrode 172 as an anode is configured. As a result, the electrode 172 functions as a so-called sacrificial anode, and the progress of the corrosion reaction of the ridge plate 171 can be suppressed. Therefore, according to the present embodiment, it is possible to provide an agricultural work machine having a function of suppressing the adhesion of soil and the generation of rust.

(1-3. Mechanism to suppress soil adhesion and rust generation)
FIG. 3C is a schematic view for explaining a mechanism for suppressing soil adhesion and rust generation in the ridge coating machine 100 according to the embodiment of the present invention. The reference numerals used in FIGS. 3 (A) and 3 (B) will also be described as appropriate.

As shown in FIG. 3C, the ridge plate 171 is connected to the negative electrode of the power supply unit 200 via the fixing member 177, the terminal portion 178, and the second wiring 204. The electrode 172 is connected to the positive electrode of the power supply unit 200 via the fixing member 175, the terminal unit 176, and the first wiring 202. That is, the voltage supplied to the ridge plate 171 is smaller than the voltage supplied to the electrode 172. In other words, the electrode 172 has a higher potential than the ridge plate 171.

Further, in the present embodiment, as the metal material constituting the electrode 172, a material having a higher ionization tendency than the metal material constituting the ridge plate 171 is used. For example, stainless steel can be used as the metal material constituting the ridge plate 171. On the other hand, as the metal material constituting the electrode 172, aluminum, magnesium, zinc, or an alloy containing aluminum, magnesium, or zinc can be used. Of course, these metal materials are an example, and the metal material constituting the electrode 172 may be determined according to the metal material constituting the ridge plate 171.

In the present embodiment, the ridge plate 171 and the power supply unit 200 are connected by the second wiring 204, but the ridge plate 171 (slope ridge 121) and the top surface ridge 122 are different from each other. Since it is electrically connected by bolts, the power supply unit 200 and the upper surface ridges 122 are connected by wiring, and a voltage is applied to the ridge plate 171 via the upper surface ridges 122. May be good.

As shown in FIG. 3C, by supplying a negative voltage (potential) to the ridge plate 171 and a positive voltage (potential) to the electrode 172, soil adherence on the slope ridge portion 121. The mechanism for suppressing the generation of rust is considered as follows.

Generally, the particles of soil 210 are negatively charged, and the surface thereof is positively charged containing cations such as sodium ion (Na +), potassium ion (K +), and calcium ion (Ca2 +). It is highly probable that water with a charge is present. When the work is started by the ridge coating machine 100, a voltage is applied between the ridge plate 171 and the electrode 172, and a negative potential is supplied to the ridge plate 171. When the soil 210 containing water adheres to the ridge 120, electro-osmosis occurs, and the positively charged water moves from the electrode 172 side to the ridge plate 171 side.

That is, when the work is continued by the ridge coating machine 100, an electroosmotic flow is generated from the electrode 172 toward the ridge plate 171 to form a water film 212 on the surface of the ridge plate 171. Then, it is considered that the water film 212 formed on the surface of the ridge plate 171 makes it easy for the soil 210 adhering to the ridge plate 171 to be peeled off.

Further, as described above, since the electrode 172 is connected to the positive electrode of the power supply unit 200 and the ridge plate 171 is connected to the negative electrode of the power supply unit 200, the electrode 172 functions as an anode and the ridge plate 171 functions as a cathode. Further, since the material of the electrode 172 is a metal material having a higher ionization tendency than the material of the ridge plate 171, the electrode 172 is placed in a state of being more easily corroded (easily ionized) than the ridge plate 171. That is, since the electrode 172 is forcibly corroded, the corrosion of the ridge plate 171 is relatively suppressed (that is, the generation of rust is suppressed).

As described above, in the present embodiment, a simple configuration in which a voltage is applied between the ridge plate 171 and the electrode 172 suppresses the adhesion of soil to the surface of the ridge plate 171 and sacrifices the electrode 172. It is possible to suppress the generation of rust. Further, by making the electrode 172 removable from the ridge plate 171 so that the electrode 172 can be easily replaced when it becomes small or deteriorated. As described above, according to the present embodiment, it is possible to provide an agricultural work machine having a function of suppressing the adhesion of soil and the generation of rust.

(1-4. Modification 1)
In the first modification, a modification of the electrode 172 according to the embodiment of the present invention will be described with reference to FIG. 4 (A). Descriptions of configurations that are the same as or similar to those in FIGS. 1 to 3 may be omitted.

FIG. 4A shows a meandering electrode 180 as an example of the electrode 172. The meandering electrode 180 is an electrode in which a plurality of electrodes 172 shown in FIG. 2B are connected to one. Since the other configurations are the same as the configurations shown in FIG. 2 (B), the description here is omitted. In one embodiment of the present invention, the meandering electrode is, as shown in FIG. 4A, curved left from one end to the other end with respect to the first direction in which the electrode extends, and the electrode is formed. It is the shape of an electrode that curves to the right with respect to the second direction of stretching.

Since the plurality of electrodes 172 become one meandering electrode 180, it is not necessary to arrange the plurality of electrodes 172 on each of the ridge plates 171, and one meandering electrode 180 is provided on each of the ridge plates 171. Since it may be arranged, the electrode 172 can be easily formed on the slope ridge portion 121. As a result, the ridged body 120 can be easily manufactured, and the manufacturing cost can be suppressed.

(1-5. Modification 2)
In the second modification, a modification of the electrode 172 according to the embodiment of the present invention will be described with reference to FIG. 4 (B). Description of the same or similar configuration as in FIGS. 1 to 4 (A) may be omitted.

As shown in FIG. 4 (B), the electrode 181 has one electrode as compared with the plurality of electrodes 172 shown in FIG. 2 (B), and is in the vicinity of the adjacent ridge plate 171. An example placed in is shown. Since the other configurations are the same as the configurations shown in FIG. 2 (B), the description here is omitted.

The plurality of ridged plates 171 have regions that overlap each other (hereinafter referred to as "adjacent portion 70"), and the ridged plates 171 that are adjacent to each other are connected by welding, for example. When the ridge coating operation is performed by the ridge coating machine 100, the ridge body 120 rotates in the rotation direction shown in FIG. 4 (B). Each ridge plate 171 has a curved surface that gradually projects toward the ridge from the downstream side to the upstream side in the rotation direction. The adjacent portion 70 of each ridge plate 171 has a step, and the upstream end of the ridge plate 171 located on the downstream side in the rotation direction becomes a ridge with respect to the downstream end of the ridge plate 171 located on the upstream side in the rotation direction. It is configured to protrude (protrude) toward. Therefore, as the ridge body 120 rotates at the time of ridge adjustment, each ridge plate 171 gradually and strongly comes into contact with the ridge. Therefore, each ridge plate 171 is more likely to have soil attached to the upstream side than the downstream side thereof.

In the second modification, the electrode 181 is arranged on the downstream side in the rotation direction of each ridge plate 171 (that is, a region that does not abut on the ridges or has a weak contact force with the ridges during the ridge preparation work). In this case as well, the electrode 181 is connected to the positive electrode of the power supply unit 200, and the ridge plate 171 is connected to the negative electrode of the power supply unit 200. Therefore, based on the above mechanism, an electroosmotic flow is generated from the electrode 181 toward the ridge plate 171 and a water film is formed on the surface of the ridge plate 171 (specifically, the upstream side of the ridge plate 171). To. That is, the soil adhering to the upstream side of the ridge plate 171 is easily peeled off. As described above, in the example shown in FIG. 4B, since the electrode 181 is arranged so as to form a water film on the upstream side of the ridge plate 171 to which soil easily adheres, the ridge plate is efficiently prepared. Adhesion of soil to 171 can be suppressed.

As described above, according to the present embodiment, it is possible to provide a ridge coating machine having a function of suppressing the adhesion of soil and the generation of rust. Since the ridge coating machine of the present embodiment does not need to be provided with a watering device, the structure can be simplified. Further, since the ridge coating machine does not have to be equipped with a watering device, the ridges are not poorly formed due to the lack of water in the watering device, and the work for replenishing the watering device is not interrupted. , Working time can be shortened.

<Second Embodiment>
In this embodiment, in the ridge coating machine 100 described in the first embodiment, an example in which an electrode 230 functioning as an anode is provided on the cover member 140b of the earth filling portion 140 will be described. If necessary, the same configuration as that of the first embodiment will be described with reference to the same reference numerals.

FIG. 5A is a rear view of the cover member 140b in the ridge coating machine 100 according to the embodiment of the present invention, and FIG. 5B is a front view of the cover member 140b. As described above, the soil filling portion 140 includes a tilling rotor 140a having a plurality of tilling claws 141, and a cover member 140b for returning the soil rolled up by the tilling rotor 140a to the field. Therefore, the cover member 140b has a shape that surrounds the circumference of the tilling rotor 140a in order to prevent the scattering of soil caused by the rotation of the tilling rotor 140a.

Specifically, the cover member 140b has a back plate 140ba that prevents soil from scattering to the rear side, a front plate 140bb that prevents soil from scattering to the front side, and soil from scattering to the side or upper side. It has a side plate 140 bc to prevent. In this embodiment, the electrode 230 is provided with respect to the back plate 140ba. In the ridge coating machine 100 of the present embodiment, the electrode 230 is connected to the positive electrode of the power supply unit 200, and the back plate 140ba is connected to the negative electrode of the power supply unit 200, as in the first embodiment. In this embodiment, an example in which a plurality of electrodes 230 are provided on the back plate 140ba is shown, but since the back plate 140ba, the front plate 140bb, and the side plate 140bc are usually electrically connected, the front plate It may be provided on 140 bb or the side plate 140 bc.

6 (A) is a cross-sectional view of the back plate 140ba shown in FIG. 5 (A) cut along C1-C2, and FIG. 6 (B) is a cross-sectional view cut along D1-D2. is there. As shown in FIG. 6A, the back plate 140ba is provided with a recess 140ba-1, and the electrode 230 is detachably fixed inside the recess 140ba-1. In this embodiment, a bolt-integrated electrode is used as the electrode 230. Specifically, in the electrode 230, the top portion 230a functions as an electrode and the bolt portion 230b functions as a fixing member.

Inside the recess 140ba-1, the top 230a of the electrode 230 is arranged to face the terminal 233 via the first insulator 231 and the second insulator 232. The nut 234 is mounted on the bolt portion 230b in a state where the bolt portion 230b is arranged so as to penetrate the first insulator 231 and the second insulator 232 and the terminal portion 233. Wiring 235 is connected to the terminal portion 233, and the wiring 235 is electrically connected to the positive electrode of the power supply unit 200.

On the other hand, as shown in FIG. 5A, the back plate 140ba is electrically connected to the negative electrode of the power supply unit 200 via the terminal unit 236 and the wiring 237. The terminal portion 236 is detachably fixed to the back plate 140ba by using, for example, a fixing member 238 including bolts and nuts. However, the terminal portion 236 may be welded to the back plate 140ba without using the fixing member 238.

As in the first embodiment, the electrodes 230 are arranged so that the surface of the top 230a is substantially flush with the surface of the back plate 140ba. As a result, it is possible to suppress the adhesion of soil to the back plate 140ba.

Also in this embodiment, as the constituent material of the electrode 230, a metal material having a higher ionization tendency than the constituent material of the back plate 140ba is used. In this embodiment, zinc is used as a constituent material of the electrode 230, and steel is used as a constituent material of the back plate 140ba. However, not limited to this example, as the constituent material of the electrode 230, aluminum, magnesium, zinc, or an alloy containing aluminum, magnesium, or zinc can be used as in the first embodiment.

As described above, in the present embodiment, the electrode 230 is connected to the positive electrode of the power supply unit 200, and the cover member 140b (the back plate 140ba in the example of FIG. 5) is connected to the negative electrode of the power supply unit 200, so that the electrode 230 is an anode. , The cover member 140b functions as a cathode. Therefore, the ridge coating machine 100 of the present embodiment has a simple configuration in which a voltage is applied between the cover member 140b and the electrode 230, as in the first embodiment, to prevent soil from adhering to the surface of the cover member 140b. At the same time, the electrode 230 can act as a sacrificial anode to suppress the generation of rust.

It is also possible to carry out this embodiment in combination with the first embodiment. In that case, the negative electrode of the power supply unit 200 can be shared by the ridge 120 and the cover member 140b. Further, since the cover member 140b is usually grounded, the negative electrode of the power supply unit may be set to the ground voltage, and the negative electrode and the cover member 140b may be electrically connected. When combined with the first embodiment, if the ridge 120 is electrically connected to the cover member 140b, a ground voltage can be applied even if it is not connected to the negative electrode of the power supply unit.

<Third Embodiment>
As a working machine according to an embodiment of the present invention, a schematic configuration of a rotary working machine 300 having a function of preventing soil adhesion and rust generation will be described with reference to FIGS. 7 and 8. FIG. 7A is a rear view showing the configuration of the rotary working machine 300 according to the embodiment of the present invention, and FIG. 7B is a right side view showing the configuration of the rotary working machine 300.

As shown in FIGS. 7 (A) and 7 (B), the rotary work machine 300 of the present embodiment has, as a basic configuration, a mounting portion 310, a gear box 312, a main frame 314, a chain case 316, and a support. It includes a frame 318, a tiller rotor 320, a shield cover 322, a leveling body (apron) 324, an extended leveling body (extension leveler) 326, and a leveling body pressurizing mechanism 328. However, the configurations shown in FIGS. 7 (A) and 7 (B) are merely examples, and the present invention is not limited to this configuration.

The mounting portion 310 is provided in front of the rotary work machine 300. Although detailed description will be omitted, specifically, the top mast provided near the center and the lower link connecting portions provided at two locations on the left and right are included. By connecting the mounting portion 310 to a three-point link hitch mechanism of the traveling machine body (not shown), the rotary work machine 300 is mounted on the rear portion of the traveling machine body so as to be able to move up and down. The rotary work machine 300 and the traveling machine may be connected via an auto hitch frame mounted on the three-point link hitch mechanism of the traveling machine.

Power is transmitted from the traveling machine body to the gear box 312 provided in the front center portion of the rotary work machine 300 via the PTO shaft. The main frame 314 is a frame that serves as a skeleton of the rotary work machine 300, and extends in a direction (left-right direction) substantially orthogonal to the traveling direction of the traveling machine body toward the left and right sides of the gearbox 312. The main frame 314 is connected to the chain case 316 and the support frame 318 at both left and right ends, respectively. A transmission shaft (not shown) is installed inside the main frame 314 arranged between the gear box 312 and the chain case 316. By this transmission shaft, power for rotating the tiller rotor 320 is transmitted from the gear box 312 to the chain in the chain case 316.

As shown in FIG. 7B, the tilling rotor 320 has a claw shaft 320a rotatably supported by the shaft and a plurality of claw shafts 320a mounted on the claw shaft 320a using mounting means (flange, holder, etc.). It has a tillage claw 320b. Although not shown, the claw shaft 320a is pivotally supported between the chain case 316 and the support frame 318. Here, the power input from the traveling machine body is changed in the gear box 312, transmitted to the claw shaft 320a via the transmission shaft in the main frame 314, the chain in the chain case 316, and the like, and is transmitted to the claw shaft 320a of the tiller rotor 320. It is converted into a rotary motion. As a result, as the claw shaft 320a rotates, the plurality of cultivated claws 320b arranged around the claw shaft 320a rotate all at once, and the soil in the field can be crushed and inverted.

The shield cover 322 is provided along the main frame 314 and is arranged so as to cover the upper part of the tiller rotor 320. The shield cover 322 has a role of preventing the soil rolled up by the tiller rotor 320 from scattering upward.

The leveling body 324 is arranged behind the tiller rotor 320 and is rotatably connected to the shield cover 322. The ground leveling body 324 has a role of preventing the soil rolled up by the tiller rotor 320 from scattering to the rear, and also has a role of a ground leveling member for performing the ground leveling work in the field.

In FIG. 7A, the extended ground leveling body 326 is rotatably connected to both left and right ends of the ground leveling body 324 in the vertical direction, and can be expanded and stored in the horizontal direction as needed. The extended ground leveling body 326 functions as a ground leveling member for making the field surface flatter, similar to the ground leveling body 324. Therefore, the rotary work machine 300 of the present embodiment can level the ground to a range outside the ground leveling body 324 by deploying the extended ground leveling body 326.

The ground leveling body pressurizing mechanism 328 is a mechanism installed between the main frame 314 and the ground leveling body 324 to pressurize or release the pressure on the ground leveling body 324 downward. For example, when the ground leveling body pressurizing mechanism 328 is turned on, a downward force is applied to the ground leveling body 324, and the ground leveling body 324 is pressed against the field. As a result, the leveling performance of the field by the leveling body 324 is improved. On the contrary, when the ground leveling body pressurizing mechanism 328 is turned off, the leveling body 324 performs the ground leveling of the field only by its own weight.

The rotary working machine 300 of the present embodiment having the above configuration has a function of suppressing the adhesion of soil and the generation of rust on the support frame 318 that supports the tilling rotor 320. The soil rolled up by the tiller rotor 320 is likely to adhere to the inside of the support frame 318 (the side on which the tiller rotor 320 is arranged), and the adhered soil is likely to adhere to form a soil mass. Therefore, the tilling claw 320b arranged at the end of the claw shaft 320a (near the support frame 318) may come into contact with the soil mass fixed to the support frame 318 and wear faster than other tilling claws. In the present embodiment, in order to prevent the formation of such a mass of soil, an electrode 330 that functions as an anode is provided inside the support frame 318.

FIG. 8 is a cross-sectional view showing the configuration of the electrode 330 in the rotary working machine 300 according to the embodiment of the present invention. Specifically, FIG. 8 is a cross-sectional view taken along the longitudinal direction of the electrode 330 provided on the support frame 318 in FIG. 7B.

As shown in FIG. 8, the basic cross-sectional structure when the electrode 330 is detachably fixed to the support frame 318 is almost the same as the structure described with reference to FIG. 6B in the second embodiment. is there. Also in this embodiment, the electrode 330 is a bolt-integrated electrode and has a top portion 330a and a bolt portion 330b. Then, the top portion 330a of the electrode 330 faces the terminal portion 333 via the first insulator 331 and the second insulator 332, and is detachably fixed by the bolt portion 330b and the nut 334 of the electrode 330. The wiring 335 electrically connected to the terminal portion 333 is electrically connected to the positive electrode of the power supply portion (not shown).

On the other hand, as shown in FIG. 8, the support frame 318 is electrically connected to the negative electrode of the power supply unit (not shown) via the terminal unit 336 and the wiring 337. The terminal portion 336 is detachably fixed to the support frame 318 by using, for example, a fixing member 338 including bolts and nuts. However, the terminal portion 336 may be welded to the support frame 318 without using the fixing member 338. Further, although an example of connecting the wiring 337 to the negative electrode of the power supply unit is shown here, since the support frame 318 is usually grounded, the negative electrode of the power supply unit is set to the ground voltage, and the negative electrode and the support frame 318 are electrically connected. It may be connected.

As in the second embodiment, the electrode 330 is arranged so that the surface of the top portion 330a is substantially flush with the surface of the support frame 318. As a result, it is possible to suppress the adhesion of soil to the support frame 318.

Also in this embodiment, as the constituent material of the electrode 330, a metal material having a higher ionization tendency than the constituent material of the support frame 318 is used. In this embodiment, zinc is used as a constituent material of the electrode 330, and steel is used as a constituent material of the support frame 318. However, not limited to this example, as the constituent material of the electrode 330, aluminum, magnesium, zinc, or an alloy containing aluminum, magnesium, or zinc can be used as in the first embodiment.

As described above, in the present embodiment, since the electrode 330 is connected to the positive electrode of the power supply unit and the support frame 318 is connected to the negative electrode of the power supply unit, the electrode 330 functions as an anode and the support frame 318 functions as a cathode. Therefore, the rotary working machine 300 of the present embodiment has a simple configuration in which a voltage is applied between the support frame 318 and the electrode 330, as in the first embodiment, to prevent soil from adhering to the surface of the support frame 318. At the same time, the electrode 330 can act as a sacrificial anode to suppress the generation of rust.

In the present embodiment, an example in which the electrode 330 is provided on the support frame 318 is shown, but the present invention is not limited to this example, and the electrode 330 can be provided on the chain case 316 and the shield cover 322 of the rotary work machine 300. Further, it is arbitrary which of the chain case 316, the support frame 318, and the shield cover 322 is provided with the electrode 330, and the electrode 330 may be provided in any one of them, or may be provided in any plurality of parts.

<Fourth Embodiment>
In this embodiment, an example in which the rotary working machine 300 described in the third embodiment is provided with an electrode 340 that functions as an anode with respect to the claw shaft 320a of the tilling rotor 320 will be described. If necessary, the same configuration as that of the third embodiment will be described with reference to the same reference numerals.

FIG. 9A is an enlarged view showing a part of the configuration of the claw shaft 320a in the rotary working machine 300 according to the embodiment of the present invention, and FIG. 9B is an enlarged view of the claw shaft 320a along the axial direction. It is a cross-sectional view as seen. As shown in FIG. 9A, in the present embodiment, a plurality of annular electrodes 340 are provided along the outer circumference of the claw shaft 320a. The electrode 340 is detachably fixed to the claw shaft 320a by using, for example, a fixing member 342 including a bolt and a nut.

Further, as shown in FIG. 9B, an insulator 344 is interposed between the claw shaft 320a and the electrode 340. That is, the claw shaft 320a and the electrode 340 are insulated and separated by an insulator 344. The insulator 344 may be an annular member provided between the claw shaft 320a and the electrode 340, the surface of the claw shaft 320a, or the inner peripheral surface of the electrode 340 (the surface facing the claw shaft 320a). It may be formed by subjecting it to an insulating treatment.

In the example shown in FIG. 9A, three electrodes 340 are shown, but the positions and the number of electrodes 340 are arbitrary. However, for the purpose of suppressing the adhesion of soil and the generation of rust on the claw shaft 320a, it can be said that a plurality of claw shafts 320a are preferably provided over the entire surface. Further, similarly to the electrode 172 described in the first embodiment, the distance between two adjacent electrodes 340 may be the same or substantially the same in the side view. When the distance between two adjacent electrodes 340 is the same or substantially the same, the electric field generated between the claw shaft 320a and each electrode 340 can be made uniform, so that the electric field adheres to the claw shaft 320a and the electrode 340. An electric current can be applied evenly to the soil.

Further, in the present embodiment, the terminal portion 346 and the wiring 348 are electrically connected to each electrode 340 by the fixing member 342. The wiring 348 is connected to the positive electrode of the power supply unit (not shown). That is, each electrode 340 is connected to the positive electrode of the power supply unit. In order to connect the wiring 348 to the positive electrode of the power supply unit, it is necessary to take out the wiring 348 to the outside of the claw shaft 320a by using a rotary connector such as a slip ring. In this case, for example, the wiring 348 may be drawn into the claw shaft 320a formed of the hollow pipe from the vicinity of the electrode 340, and the wiring 348 may be bundled or integrated into one wiring inside the claw shaft 320a. Then, the wiring 348 may be drawn to the end of the claw shaft 320a while maintaining the insulation with the claw shaft 320a, and may be taken out to the outside using the above-mentioned rotary connector.

On the other hand, the claw shaft 320a is connected to the negative electrode of a power source (not shown). Normally, the claw shaft 320a reaches the ground potential by coming into contact with the chain case 316 and the support frame 318. Therefore, if the negative electrode of the power supply unit is the ground voltage and the negative electrode and the support frame 318 are electrically connected, the claw shaft 320a can be the ground voltage. In this way, by connecting the claw shaft 320a to the negative electrode of the power supply or the support frame 318, a circuit having the electrode 340 as the anode and the claw shaft 320a as the cathode can be configured.

It is also possible to carry out this embodiment in combination with the third embodiment. In that case, the negative electrode of the power supply unit 200 can be shared by the support frame 318 and the claw shaft 320a.

Although the present invention has been described above with reference to the drawings, the present invention is not limited to the above-described embodiment or modification, and can be appropriately modified without departing from the spirit of the present invention. For example, a machine in which a person skilled in the art appropriately adds, deletes, or changes the design based on the working machine of each embodiment is also included in the scope of the present invention as long as it has the gist of the present invention. Further, the above-described embodiments or modifications can be appropriately combined as long as there is no contradiction with each other, and the technical matters common to the embodiments or modifications can be combined without any explicit description. It is included in the modified example.

Further, even if the action / effect is different from the action / effect brought about by each of the above-described embodiments or modifications, those that are clear from the description of the present specification or those that can be easily predicted by those skilled in the art. Is, of course, understood to be brought about by the present invention.

50: Traveling machine, 60: Link mechanism, 100: Ridge coating machine, 110: Mounting part, 111a: Lower link connecting part, 111b: Lower link connecting part, 112: Top link connecting part, 113: Hitch frame, 114: Input Shaft, 120: Ridged body, 121: Slope ridged portion, 122: Top surface ridged portion, 131: Link member, 132: Offset frame, 133: Offset control cylinder, 134: Working direction control cylinder, 140a: Claying part, 150: Connecting part, 160: Position sensor, 161: Arm, 162: Sensor rod, 165: Angle sensor, 170: Rear frame, 171: Ridge plate, 172: Electrode, 173: First insulator, 174: Second insulator, 175: Fixing member, 175-1: Bolt, 175-2: Nut, 177: Fixing member, 177-1: Welding bolt, 177-2: Nut, 176: Terminal part, 178: Terminal part, 180: Electrode, 181: Electrode, 200: Power supply part, 202: First wiring, 204: Second wiring, 210: Sat, 212: Water film

Claims (10)

The first metal member and
A second metal member that is detachably fixed to the first metal member via an insulator and a voltage is applied between the first metal member and the second metal member.
With
A working machine in which the ionization tendency of the material constituting the second metal member is greater than the ionization tendency of the material constituting the first metal member. The working machine according to claim 1, wherein the voltage is applied so that the second metal member has a higher potential than the first metal member. The first metal member is a ridge portion that prepares the soil in the field.
The working machine according to claim 1 or 2, wherein the second metal member is provided on a surface of the ridge-adjusted portion that comes into contact with the soil. The working machine according to claim 3, wherein the ridge portion is made of stainless steel. Further equipped with a tiller rotor with multiple tiller claws,
The first metal member is a cover member having a surface facing the tilling rotor.
The working machine according to claim 1 or 2, wherein the second metal member is provided on a surface of the cover member facing the tilling rotor. Further equipped with a tiller rotor with multiple tiller claws,
The working machine according to claim 1 or 2, wherein the first metal member is a claw shaft constituting the tilling rotor. The working machine according to claim 5 or 6, wherein the first metal member is made of steel or cast iron. The working machine according to any one of claims 1 to 7, wherein the second metal member is aluminum, magnesium, zinc, or an alloy containing aluminum, magnesium, or zinc. The working machine according to any one of claims 1 to 8, further comprising a voltage applying means capable of applying a voltage to the second metal member. The working machine according to claim 9, wherein the voltage applying means is a battery or a voltage generating unit that generates a voltage from electric energy generated by using the working machine.

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