JP5399447B2 - Lawn drilling deep tillage machine - Google Patents

Description

  The present invention is attached to the rear part of a tractor and travels on a lawn such as a golf course, softens the hardness of the green, promotes the growth of the roots of the lawn, and uses the deep drilling for lawn to improve drainage. Related to the machine.

  A conventional lawn drilling deep tiller of this type will be described with reference to FIGS. FIG. 7 is a side view showing the non-working state attached to the tractor, FIG. 8 is a side view showing the working state in the same state, and FIG. 9 is a view for explaining the operation of the tine.

  In the figure, 1 is a machine frame that is attached to the rear part of the tractor 2 and touches the lawn surface by the auxiliary traveling wheel 3, and the cover 4 hides the whole picture, but it is equipped with a drilling deep plow mechanism that reciprocates the tine 5 up and down. Has been. The machine frame 1 descends downward as shown in FIG. 8 during work and travels on the lawn surface by the travel assisting wheel 3, but ascends and retreats as shown in FIG. 7 when not working.

Although a detailed description of the drilling and deep plowing mechanism is omitted here, the tine 5 reciprocates up and down using the PTO shaft of the tractor 2 as a drive source. A plurality of tines 5 are arranged in the width direction (for example, one set of three, six sets of 18), and the entire tine 5 is divided into sets and the timing of vertical movement is shifted to receive the tine 5 as a whole. The force and the upward force are offset. By doing in this way, it can drill in the soil of lawn with a plurality of tines 5 while traveling with the tractor 2, and can perform deep plowing.
In the figure, reference numeral 6 denotes a spring that urges the tine 5 in the forward direction to hold the tine 5 in a fixed position, and a damper is used in consideration of strength.

  Next, the operation of the tine 5 will be described with reference to FIG. As shown in FIG. 9A, the tine 5 is pierced perpendicularly to the lawn surface, and the tip of the tine 5 is pushed backward against the spring 6 by the traveling of the tractor 2 as shown in FIG. Thus, it is pulled out in the backward inclined state. In this way, the tip of the tine 5 is pushed backward in the soil to cut the soil, thereby forming a drainage groove in the soil and drilling deep plowing. The piercing movement of the tine 5 onto the lawn surface is performed at a considerably high speed during the traveling operation of the tractor 2 and can be drilled and deeply plowed over the entire lawn surface.

  The problem to be solved by the present invention is that the above-described conventional tine 5 is in a backward inclined state in which the tip is pushed backward against the spring 6 when the tine 5 is pulled out from the soil (the state shown in FIG. 9B). ), So that the upper soil on the rear side is pulled up, the grass roots on the upper rear side are torn and the lawn is damaged, and the hole is larger than the diameter of the tine 5, so It takes time and effort to level the green surface.

  The present invention includes a machine frame that is attached to the rear part of a tractor and that contacts a lawn surface by a traveling auxiliary wheel, and is drilled in this machine frame as a deep-plowing mechanism, and is pivotally driven by the PTO shaft of the tractor and is pivoted on the machine frame And a swinging arm that is reciprocated up and down by being driven by a connecting rod that extends downward from the crank in a state where the arm base end side is pivotally supported by the machine frame, and an upper portion of the swinging arm. A tine holding member whose lower part swings back and forth in the traveling direction, a tine attached to the tine holding member, a base end side attached to the machine frame below the swing arm, and a front end side The tine holding member is attached to the tine holding member, and the tine is in a state where the tine holding member is fixed by the urging member in an unloaded state. The raw surface is lawn drilling cultivating machine is characterized in that as stuck into the soil forward inclined state angled forward from the vertical.

Further, in the lawn drilling cultivating machine of the present invention, a biasing member configured within the coil spring and the coil spring in the transmural interpolating a plurality of wire springs, and the machine frame side at least one of said wire spring And the release side is fixed to the distal end side of the coil spring, and the rest of the wire spring is attached to the tine holding member side and the release side is fixed to the proximal end side of the coil spring. And

  In the lawn drilling deep tiller of the present invention, the tine stabs in a forward inclined state with respect to the lawn surface and is pulled straight upward in the vertical state, so that the lawn root is not cut and the lawn is not damaged when the tine is extracted. Ideal and effective drilling and deepening of the green, softening the green, promoting the growth of grass roots and improving drainage, and the tine goes straight up, making the surface holes small and uniform Therefore, the green can be used immediately after drilling deep plowing work.

  In the lawn drilling deep tiller of the present invention, the urging member is composed of a coil spring and a plurality of wire springs penetrating the coil spring, so that the load applied from the tine can be received by the compression of the coil spring. This urging member can withstand long and continuous loads from the tines during repeated piercing, and it is flexible in configuration compared to inflexible ones like conventional dampers. By having the property, even if the lawn surface is swayed up and down or inclined due to undulation or inclination, it becomes the same in the portion where the tine is stuck, and the lawn surface after drilling deep plowing work is finished cleanly and uniformly.

1 shows an embodiment of the device of the present invention and is a side view of a working state attached to a tractor. FIG. It is a figure which shows the structure of this mechanism in FIG. It is a figure which shows the structure of this mechanism which looked at FIG. 2 from back. FIG. 4 is a partial view of FIG. 3 viewed from the left. It is a figure explaining the operation | movement of the tine in FIG. It is a figure which shows the structure of the urging | biasing member in FIG. This is a side view showing a conventional non-working state of this type of lawn drilling deep tiller attached to a tractor. It is a side view which shows the time of work in the same state as FIG. It is a figure explaining operation | movement of the tine in FIG.

  In the lawn drilling deep tiller of the present invention, in a state where the tine holding member is fixed by the urging member in an unloaded state, the tine pierces into the soil in a forward inclined state with an angle from the vertical to the front with respect to the lawn surface, The above effect is realized by pulling straight upward in a vertical state. Hereinafter, a lawn drilling deep tiller of the present invention will be described with reference to the drawings.

  FIG. 1 shows an embodiment of the apparatus of the present invention, a side view of a working state attached to a tractor, FIG. 2 is a diagram showing a configuration of the mechanism in FIG. 1, and FIG. 3 is a mechanism of FIG. 4 is a partial view of FIG. 3 viewed from the left, FIG. 5 is a view for explaining the operation of the tine, and FIG. 6 is a view showing the structure of the urging member. The same or corresponding parts are denoted by the same reference numerals and description thereof is omitted.

  In the figure, reference numeral 7 denotes a crankshaft that rotationally drives a crank 8, and is linked to the PTO shaft 10 side of the tractor 2 by a chain belt 9. Reference numeral 11 denotes six swing arms whose arm base end side is pivotally supported on the machine frame 1, and the arm distal end side is connected to each crank 8 by six connecting rods 12. Reference numeral 13 denotes a tine holding member whose upper part is pivotally supported at the tip of the swing arm 11 and whose lower part swings back and forth in the traveling direction, and holds three tines 5. 14 is an urging member for holding the angle of the tine 5 and is provided between the machine casing 1 and the tine holding member 13.

  The urging member 14 is composed of a coil spring 14a and three wire springs 14b as shown in FIG. In the unloaded state, as shown in FIG. 6 (a), one wire spring 14b attached to the machine frame 1 and two wire springs 14b attached to the tine holding member 13 are within the coil spring 14a. And the respective release sides are fixed to both end sides of the coil spring 14a. In a state where the urging member 14 is extended as shown in FIG. 6B, the coil spring 14a is compressed so that the entire length is extended by (R). The biasing member 14 having such a configuration has a flexible structure because the wire springs 14b on both the left and right sides can be shaken in all directions in the vertical and horizontal directions at the coil spring 14a.

  When the crankshaft 7 is driven by the PTO shaft 10 as the tractor 2 travels, the swing arm 11 moves up and down as shown in FIG. 2 by the crank 8. As can be seen, for example, when the outer tines 5 are at the lowest position, all the tines 5 are shifted in groups so that the inner tine 5 is positioned at the uppermost position.

Then, at the position of the lowermost end of the swing arm 11, as shown in FIG. 5 (a), the tine 5 is pierced obliquely in the advancing direction (forward) about 5 degrees from the vertical to the lawn surface. The tine 5 itself is not pulled in the advancing direction by the action of the urging member 14, and moves so that the angle changes in the soil with the pierced surface as a fulcrum. When pulling up from the lawn surface by the action of the urging member 14, it is pulled straight up as shown in FIG.
Therefore, although the upper surface of the lawn surface after the tine 5 has been removed can be seen only as a hole about the diameter of the tine 5, the inside of the soil has a loosened hole as shown in FIG.

  In addition, since the distance (indicated by L in FIG. 5) that the tine 5 travels by the tractor 2 is small before the tine 5 is stabbed into the soil and comes out, the tine 5 almost moves up and down at that position. . That is, the vertical movement speed of the tine 5 is set much faster than the traveling speed of the tine 5.

  In this way, the tine 5 is stabbed in a forward inclined state with respect to the lawn surface, and is pulled straight upward in a vertical state. There is no such thing as tearing and damaging the lawn, making it ideal and effective drilling and deep plowing that softens the green, promotes root growth and improves drainage.

  In addition, since the tine 5 is pulled straight upward in this manner, the hole on the surface becomes as uniform as the diameter of the tine 5, so that the green can be used immediately after the drilling deep plowing operation. Therefore, it is not necessary to perform leveling of the green surface by taking time and labor after drilling and deep plowing work as in the past.

  Furthermore, by configuring the biasing member 14 with the coil spring 14a and the wire spring 14b, the load applied from the tine 5 is received by the compression of the coil spring 14a as shown in FIG. It can withstand long and continuous loads from the tine 5 of the time, and it has a flexible structure compared to the inflexible one like the conventional damper, so Even if the top / bottom / left / right shake due to tilting, etc. is the same in the part where the tine is stuck, the green surface can be finished cleanly and uniformly.

  INDUSTRIAL APPLICABILITY The present invention can be widely used in machines that are attached to the rear part of a tractor and run on a lawn such as a golf course and perform drilling and deep plowing operations.

DESCRIPTION OF SYMBOLS 1: Machine frame 2: Tractor 3: Driving assistance wheel 4: Cover 5: Tine 6: Spring 7: Crank shaft 8: Crank 9: Chain belt 10: PTO shaft 11: Swing arm 12: Connecting rod 13: Tine holding member 14: urging member 14a: coil spring of the urging member 14 14b: wire spring of the urging member 14

Claims (1)

It is equipped with a machine frame that is attached to the rear of the tractor and touches the lawn surface with a traveling auxiliary wheel, and as a drilling deep plow mechanism in this machine frame,
A crank that is pivotally mounted on the machine frame and rotated by the tractor's PTO shaft, and an arm distal end side is driven by a connecting rod that extends downward from the crank with the arm base end side being pivotally supported by the machine frame. A swing arm that reciprocates, a tine holding member whose upper part is pivotally supported by the swing arm and whose lower part swings back and forth in the traveling direction, a tine attached to the tine holding member, A biasing member that is below and has a base end attached to the machine frame and a tip end attached to the tine holding member;
In a state where the tine holding member is fixed by the urging member in an unloaded state, the tine is stabbed into the soil in a forward inclined state with an angle from the vertical to the front with respect to the lawn surface , and
The urging member is composed of a coil spring and a plurality of wire springs penetrating the coil spring, and at least one of the wire springs is attached to the machine frame side, and the release side thereof is on the tip side of the coil spring. A lawn drilling deep cultivator characterized by fixing the remaining wire spring to the tine holding member side and fixing the release side to the proximal end side of the coil spring.

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