JP4040033B2 - Turf cutting machine - Google Patents

Description

  The present invention relates to a lawn rooting machine for maintaining a lawn surface by cutting a lawn surface in a golf course or the like, and more particularly to a lawn rooting machine used for lawn rooting work on a green edge. Is.

  In recent years, in golf courses and the like, an increasing number of courses use “bent turf”, which is an example of Western turf, for green turf, and “Koryo turf”, which is an example of Japanese turf, for a fairway. That is, there are an increasing number of golf courses using two different types of turf in one course. By using two different types of turf, the boundary between the green and the fairway on the course becomes clear, and the effect of attracting players with the texture and aesthetics such as the color and hardness of the two different types of turf. This is because it is expected. By the way, in winter, the Korean turf used mainly on the fairway withers in winter and its color turns brown. On the other hand, bent turf is generally in a green state because it is excellent in winter growth. Also, due to the nature of turf, it is known that there is a phenomenon that the roots of each turf grow and invade other areas, especially the roots of green bent turf grow and go to the fairway side of Goryeo turf It is known to overhang. Due to the nature of the turf, especially on the fairway side near the green edge in winter, the green bent turf is sparsely present on the spots on the fairway that has withered in the winter, and this impairs the aesthetics of the course. . Therefore, using a device such as that disclosed in Patent Document 1 below, the grass edge is cut off at the green edge portion, and unnecessary turf is discharged to form a groove so that the green side vent lawn and the fairway side By cutting the edge with the Korean turf, each other's turf is prevented from entering other areas. The turf cutting machine described in this patent publication 1 is cut by piercing two cutters for forming grooves into the grass surface at a high speed of about 100 to 200 reciprocations per minute. The lawn is ejected in blocks by using the momentum to extract the cutter piercing the surface from the lawn surface. In other words, the technique described in Patent Document 1 performs a reciprocating motion in which a cutter is stabbed into a grass surface at a high speed and extracted. Therefore, in order to reciprocate the cutter, a mechanism for swinging an arm that supports the cutter is provided.

JP 10-262410 A

  However, since the turf cutting machine described in Patent Publication 1 is configured as described above, the following inconvenience occurs. First, in order to make the cutter reciprocate with respect to the lawn surface, the vibration of the turf cutting machine itself is large, so that it is difficult to operate and lacks stability. Furthermore, since the resistance force when the cutter is stabbed into the lawn surface changes depending on the hardness (hardness) of the lawn surface, when the lawn surface is hard, the above vibration becomes stronger and larger, The supporting tire could damage the lawn surface. In addition, the turf separated into green and fairways is scattered because the cutter reciprocates and uses the momentum when the cutter stabbed into the lawn surface is extracted to discharge the turf separated into blocks. In addition, since the block-shaped separated turf is shattered when it falls onto the lawn surface, there is a problem that it takes time and effort for cleaning after the work. Further, since the cutter is pierced at a high speed with respect to the lawn surface, the impact on the cutter is large, and there is a possibility that the wear of the cutter becomes severe. Furthermore, since there are many movable parts such as a swing fulcrum for reciprocating the cutter at a high speed, there is a risk that the movable parts will be heavily worn and maintenance will be troublesome. Therefore, the present invention has been made in view of the above circumstances, and the object of the present invention is to form a groove in the green edge without reciprocating the cutter, and to scatter the separated turf without moving the movable part. It is to propose a turf cutting machine that reduces maintenance and facilitates maintenance.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

A lawn root cutter (10) that cuts grass roots by cutting into the lawn surface (200) at a predetermined depth, and the lawn root cutter (10) is provided on the left and right sides of the support frame (11). The axles (14, 14) are rotatably supported, the tires (12, 12) are rotatably supported at both ends of the axles (14, 14), and the front side of the support frame (11) is A connecting portion (13) for connecting with the connecting portion (180) of the self-propelled green mower (100) is provided, and a cut for making a cut in the lawn surface (200) is provided on the lower surface of the support frame (11). A cutter shaft (22) for supporting two circular cutters (20a, 20b) as a fitting means is provided, and the cutter shaft (22) is provided on the lower surface of the frame 11 so as to protrude downward. 21) is supported rotatably by the support member (2 21) protrudes downward, the cutter shaft (22) is located below the axle (14), and the outer periphery of the two circular cutters (20a, 20b) protrudes downward from the tire (12, 12). The opening (15) is provided in the support frame (11) so that the upper surface of the cutter (20a, 20b) does not contact the support frame (11), and the lower surface of the support frame (11). A chisel (30) is provided on the rear side of the side cutter (20a, 20b) to scoop up the grass roots cut by the cutter (20a, 20b) and separated from the lawn surface (200). One end of the support frame (11) is fixed to the lower rear side of the support frame (11), the tip of the chisel (30) on the cutter (20a / 20b) side is formed at an acute angle, and the lowermost position of the cutter (20a / 20b) Two pieces on the left and right in the vicinity The cutter (20a / 20b) is configured to be positioned between the cutters (20a / 20b), and the outer periphery of the cutter (20a / 20b) is formed at an acute angle toward the outer side. The cutter (20a, 20b) is configured to be pushed inward by the grass and soil of the turf, and the turf root scooped up by the chisel (30) is discharged to the side of the turf surface (200). A side plate (31) as means is fixed to the lower surface of the support frame (11) along the chisel (30) .

  As effects of the present invention, the following effects can be obtained.

A lawn root cutter (10) that cuts grass roots by cutting into the lawn surface (200) at a predetermined depth, and the lawn root cutter (10) is provided on the left and right sides of the support frame (11). The axles (14, 14) are rotatably supported, the tires (12, 12) are rotatably supported at both ends of the axles (14, 14), and the front side of the support frame (11) is A connecting portion (13) for connecting with the connecting portion (180) of the self-propelled green mower (100) is provided, and a cut for making a cut in the lawn surface (200) is provided on the lower surface of the support frame (11). A cutter shaft (22) for supporting two circular cutters (20a, 20b) as a fitting means is provided, and the cutter shaft (22) is provided on the lower surface of the frame 11 so as to protrude downward. 21) is supported rotatably by the support member (2 21) protrudes downward, the cutter shaft (22) is located below the axle (14), and the outer periphery of the two circular cutters (20a, 20b) protrudes downward from the tire (12, 12). The opening (15) is provided in the support frame (11) so that the upper surface of the cutter (20a, 20b) does not contact the support frame (11), and the lower surface of the support frame (11). A chisel (30) is provided on the rear side of the side cutter (20a, 20b) to scoop up the grass roots cut by the cutter (20a, 20b) and separated from the lawn surface (200). One end of the support frame (11) is fixed to the lower rear side of the support frame (11), the tip of the chisel (30) on the cutter (20a / 20b) side is formed at an acute angle, and the lowermost position of the cutter (20a / 20b) Two pieces on the left and right in the vicinity The cutter (20a / 20b) is configured to be positioned between the cutters (20a / 20b), and the outer periphery of the cutter (20a / 20b) is formed at an acute angle toward the outer side. The cutter (20a, 20b) is configured to be pushed inward by the grass and soil of the turf, and the turf root scooped up by the chisel (30) is discharged to the side of the turf surface (200). By fixing the side plate (31) as a means to the lower surface of the support frame (11) along the chisel (30), it becomes possible to carry out the rooting operation easily and continuously. Since the separation turf separated by the root cutting work is continuously scooped by the tip of the removing means, there is no vibration like the conventional lawn root cutting machine, so it is easy to operate stably, Turf where the tire touches down No more damage to the raw surface.

In addition, the separation lawn continuously picked up by the removal means is simply discharged to the side of the removal means continuously, and the block-like separation lawn is not discharged unlike the conventional lawn rooter. The separated turf can be continuously and neatly discharged immediately next to the groove formed by the turf cutting machine of the present invention.
Therefore, the separation lawn is not scattered unlike the conventional lawn root cutter, and cleaning is easy.

  In addition, by connecting the turf rooter of the present invention to an agricultural work vehicle such as a self-propelled mower such as a green mower, which is generally present in the past, it is easy to perform the root cutting work by the turf rooter of the present invention. Can be executed.

That is, since a power source can be selected unlike a conventional turf cutter, it can be easily connected to a self-propelled green mower possessed by a user.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The following best mode for carrying out the present invention is an example embodying the present invention, and is not intended to limit the technical scope of the present invention. FIG. 1 is a schematic configuration diagram when the turf root cutter 10 of the present invention is connected to a self-propelled green mower 100, FIG. 2 is a schematic configuration diagram of the turf root cutter 10 of the present invention, and FIG. 3 is a cutter 20a / 20b. FIG. 4 is an enlarged explanatory view of the situation where the turf is separated and discharged from the back of the turf rooter 10, and FIG. 4 shows the grooves formed when the operation is performed by the turf rooter 10 according to the present invention and the separation. It is explanatory drawing of the condition with turf.

<Schematic configuration when the turf cutting machine of the present invention is connected to a self-propelled green mower >
First, a schematic configuration when the turf cutting machine of the present invention is connected to a self-propelled green mower will be described with reference to FIG. 1, and then the turf cutting machine will be described in detail with reference to FIG. As shown in FIG. 1, a turf rooter 10, which is an example of a turf rooter according to the present invention, is used by being connected to a self-propelled green mower 100 having power such as an engine 110. The self-propelled green mower 100 is preferably a self-propelled mower such as a green mower for cutting the lawn of a golf course, and may be a management machine or a small tractor. As an example of the self-propelled green mower 100, a case of green mower will be described. First, a schematic configuration of the self-propelled green mower 100 will be described. The front part of the self-propelled green mower 100 is mainly constituted by a cutting blade 150 for mowing the lawn, a drum 140 for grounding and contacting the lawn surface, and an auxiliary wheel 160. A section 130 is provided. Further, an engine 110 serving as a driving source for rotationally driving the drum 140 and a tank 120 for storing fuel to be supplied to the engine 110 are provided above the cutting unit 130. Further, a handle 170 for an operator to operate the self-propelled green mower 100 is provided on the rear side of the mowing unit 130, and a connecting part for connecting other devices or the like to the intermediate part. 171 is provided. Further, a connecting portion 180 for connecting other devices is provided below the rear portion of the cutting unit 130. Since the self-propelled green mower 100 is thus configured, the front side of the turf cutting machine 10 is connected to the connecting part 180, while the rear part of the turf cutting machine 10 is connected to the connecting part 171. It becomes possible to connect via the support material 190.

<Schematic configuration of turf cutting machine of the present invention>
Next, a schematic configuration of the turf cutting machine 10 according to the present invention will be described with reference to FIG. 2A is a plan view of the turf cutting machine 10 as viewed from above, and FIG. 2B is a side view of the turf cutting machine 10 shown in FIG. 1 viewed from the same direction (left side view). (However, the tire 12 is indicated by a dotted line in order to make the cutter 20a stand out.) (C) is a view of the turf cutting machine 10 seen from the rear (however, the description of the chisel 30 and the side plate 31 is omitted). ). An axle 14 is rotatably provided in the vicinity of the center of the lower surface of the frame 11 that bears the overall rigidity of the turf cutting machine 10, and tires 12 are provided at both ends of the axle 14 to form both wheels. A connecting portion 13 for connecting to the connecting portion 180 is provided on the upper front side of the frame 11.

<Cut means>
Further, on the lower surface of the frame 11, a cutter shaft 22 for supporting two circular cutters 20a and 20b, which is an example of a cutting means for cutting the grass surface, is provided. The cutter shaft 22 is rotatably provided on the lower surface of the frame 11 by support members 21 and 21 provided to protrude downward. That is, since the support members 21 and 21 protrude downward, the cutter shaft 22 is positioned below the axle 14, so that the diameters of the two circular cutters 20a and 20b are set to an appropriate size. As shown in FIG. 2C, the cutters 20a and 20b are pierced below the lawn surface 200. That is, for example, the cutters 20a and 20b are configured to pierce to a depth of 210 as shown in FIG. The adjustment of the depth 210 can be easily performed by changing the size of the cutters 20a and 20b. Further, an opening 15 is provided as shown in FIG. 2A so that the upper part of the cutters 20a and 20b does not contact the frame 11. Further, the shape of the cutters 20a and 20b is not particularly limited to a circular shape as long as it has a similar function, and may be a polygonal shape.

<Removal means>
Further, a chisel which is an example of a removing means for scooping up the grass roots separated from the lawn surface 200 by being cut by the cutters 20a and 20b on the rear side of the cutters 20a and 20b on the lower surface side of the frame 11. 30 is provided. One end of the chisel 30 is configured to be fixed to a support member 32 protruding downward on the rear side of the lower surface of the frame 11 by bolts or welding. The tip of the chisel 30 on the other end side (cutter 20a / 20b side) is sharpened at an acute angle as shown in FIG. 2B, and the lowest end position of the cutter 20a / 20b (on the circumference of the cutter 20a / 20b). It is configured to be in the vicinity of the deepest position). Furthermore, as shown in FIG. 3 used in the following description, the tip portion of the chisel 30 (chisel tip 30a) is configured to be positioned between the two cutters 20a and 20b. Since it is comprised in this way, it becomes a structure which can sow the grass root separated from the grass surface by the cutters 20a and 20b continuously.

<Example of work (FIG. 3)>
Since the turf cutting machine 10 is configured as described above, by connecting the turf cutting machine 10 to the self-propelled green mower 100, as shown in FIG. 1, the cutters 20a and 20b, the chisel 30, Is always stuck into the lawn surface 200. In other words, by aligning the cutting edge of the cutter 20a / 20b with the point where the root cutting operation is to be started with a green edge or the like and connecting it to the self-propelled green mower 100, the cutter 20a / 20b is pierced at the point. Can be performed. In this state, when the operator operates the self-propelled green mower 100 and proceeds in a desired direction, the cutters 20a and 20b can continuously perform the root cutting work while being stuck into the lawn surface 200. Become. Further, after being separated from the lawn surface 200 by the two cutters 20a and 20b, the grass roots remaining between the cutters 20a and 20b are scooped by the rear chisel 30 as the cutters 20a and 20b advance in the traveling direction. Taken. Specifically, scooping is performed as shown in FIG. In addition, since this FIG. 3 is the expansion explanatory drawing which looked at the condition which isolate | separates and discharges turf with cutter 20a * 20b from the back of the turf rooting machine 10, in view of the ease of illustration and convenience of description, Only the cross-section of the tip portion on the sharp side of the chisel 30 is expressed, and the tip portion on the sharp side of the chisel 30 is hereinafter referred to as “chisel tip 30a”. For example, in FIG. 3, the cutters 20 a and 20 b move in the back direction toward the surface of the paper, and thereby the grass roots separated from the grass surface 200 by the cutters 20 a and 20 b (hereinafter simply referred to as “separated grass 220”). The bottom portion is scooped up by the chisel tip 30a (scraped in the upward thick arrow direction in FIG. 3). Therefore, a groove 230 having a width of the cutters 20a and 20b and a depth of the chisel tip 30a is formed on the trace of the lawn surface cut by the cutters 20a and 20b and the separated lawn 220 being scooped by the chisel 30. It will be.
In other words, the groove 230 desired by the operator can be formed by matching the width of the cutters 20a and 20b and the depth of the chisel tip 30a with the width and depth of the groove 230 to be formed. Specifically, in the green edge root cutting operation, for example, a groove 230 having a width of about 15 mm and a depth of about 25 mm may be formed. Further, as shown in FIG. 3, the front end portions of the cutters 20a and 20b are formed at an acute angle with the cut edges 20c and 20d facing outward, so that the more the cutters 20a and 20b pierce the lawn, The cutters 20a and 20b are pushed inward by the grass and soil (in the direction of two diagonally downward arrows in FIG. 3). Accordingly, the cross section of the separation turf 220 has a trapezoidal shape with a long upper side and a short lower side, as shown in FIG. 3, so that it is easily scooped by the chisel tip 30a.

Since the turf cutting machine 10 of this invention is comprised as mentioned above, there exist the following effects. The cutters 20a and 20b are basically stuck to the lawn surface 200 at a certain constant depth. In this state, by moving the turf rooting machine 10 with the self-propelled green mower 100 or the like, the root cutting work can be easily and continuously performed. In addition, the turf rooting machine 10 of the present invention is like the conventional turf rooting machine described above, because the separated turf 220 separated by the root cutting operation is scraped continuously by the tip portion of the chisel 30. Since vibration does not occur, it is easy to operate stably, and no damage is caused to the lawn surface on which the tire contacts the ground. Further, since there is no useless movement such as rocking and vibration, it is possible to suppress wear of parts and the like, and there is an advantage that the maintainability of the entire device is improved.

<Discharge means>
Further, as shown in FIG. 2A, a side plate 31, which is an example of discharge means for discharging the grass roots scooped by the chisel 30 to the side of the grass surface 200, is provided along the chisel 30. In this manner, the support member 32 or the frame 11 may be fixed to the lower surface. As shown in FIG. 2A, the side plate 31 may be, for example, a curved surface that curves to the right from the front to the rear of the right side surface. It is provided so as to be deviated to the left relative to the chisel 30. Since the side plate 31 is provided in this way, the separation lawn 220 (separated lawn root) continuously scooped by the chisel 30 is made to follow the curved surface of the side plate 31 and the chisel. It is possible to discharge continuously to the right side of 30. As described above, the turf cutting machine 10 according to the present invention merely continuously discharges the separated turf 220 scooped up by the chisel 30 to the side of the chisel 30. As shown in FIG. 4, the separated turf 220 (thick black solid line) is continuously placed immediately next to the groove 230 formed by the turf rooter 10 of the present invention. Can be discharged cleanly. Therefore, unlike the conventional turf cutting machine 10, the separated turf is not scattered and cleaning becomes easy. Of course, conversely, a curved surface curved to the left side may be formed on the left side surface of the side plate 31, and in this case, the mounting position of the side plate 31 itself is biased relatively to the right side with respect to the chisel 30. The grass roots scooped up by the chisel 30 are continuously discharged to the left side of the chisel 30, and the same effects as described above are obtained. In the above description, an example of securing a path for discharging the separation turf 220 by forming a curved surface on one side of the side plate 31 has been described. However, as another method, the side plate on the plane plate is simply connected to the chisel 30. However, the same effect as described above can be obtained even when the apparatus is provided obliquely (tilted from the front to the rear toward the right side or the left side).

<Material of cutters 20a and 20b>
As the material of the cutters 20a and 20b and the chisel 30, it is desirable to use “high-speed tool steel” (common name: high-speed steel) used for general drills and the like in order to make a cut in the lawn surface or the like. Of course, if there is any other suitable material, a cutter or chisel made of that material may be used.

The schematic block diagram at the time of connecting the turf cutting machine 10 of this invention to the self-propelled green mower 100. FIG. The schematic block diagram of the turf cutting machine 10 of this invention. The expansion explanatory drawing which looked at the condition which isolate | separates and discharges turf with cutter 20a * 20b from the back of the turf cutting machine 10. FIG. Explanatory drawing of the condition of the groove | channel formed when the operation | work was performed by the turf cutting machine 10 of this invention, and separation turf.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Turbine cutting machine 11 Frame 12 Tire 13 Connection part 20a * 20b Cutter 21 * 21 Support member 22 Cutter shaft 30 Chisel 31 Side board

Claims (1)

A lawn root cutter (10) that cuts grass roots by cutting into the lawn surface (200) at a predetermined depth, and the lawn root cutter (10) is provided on the left and right sides of the support frame (11). The axles (14, 14) are rotatably supported, the tires (12, 12) are rotatably supported at both ends of the axles (14, 14), and the front side of the support frame (11) is A connecting portion (13) for connecting with the connecting portion (180) of the self-propelled green mower (100) is provided, and a cut for making a cut in the lawn surface (200) is provided on the lower surface of the support frame (11). A cutter shaft (22) for supporting two circular cutters (20a, 20b) as a fitting means is provided, and the cutter shaft (22) is provided on the lower surface of the frame 11 so as to protrude downward. 21) is supported rotatably by the support member (2 21) protrudes downward, the cutter shaft (22) is located below the axle (14), and the outer periphery of the two circular cutters (20a, 20b) protrudes downward from the tire (12, 12). The opening (15) is provided in the support frame (11) so that the upper surface of the cutter (20a, 20b) does not contact the support frame (11), and the lower surface of the support frame (11). A chisel (30) is provided on the rear side of the side cutter (20a, 20b) to scoop up the grass roots cut by the cutter (20a, 20b) and separated from the lawn surface (200). One end of the support frame (11) is fixed to the lower rear side of the support frame (11), the tip of the chisel (30) on the cutter (20a / 20b) side is formed at an acute angle, and the lowermost position of the cutter (20a / 20b) Two pieces on the left and right in the vicinity The cutter (20a / 20b) is configured to be positioned between the cutters (20a / 20b), and the outer periphery of the cutter (20a / 20b) is formed at an acute angle toward the outer side. The cutter (20a, 20b) is configured to be pushed inward by the grass and soil of the turf, and the turf root scooped up by the chisel (30) is discharged to the side of the turf surface (200). A turf cutting machine characterized in that a side plate (31) as a means is fixed to the lower surface of the support frame (11) along the chisel (30) .

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