JP2007116933A - Chemical coating device of bush cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bush cutter which is necessary to be simple and lightweight, because a grass-cutting worker cuts grasses in a state carrying and holding a bush-cutting rod, and is further necessary to not only satisfy the conditions, even when a weed growth-controlling agent is also coated during a cutting work, but also facilitate a bush-cutting works, when the cutting work is carried out for a long time. <P>SOLUTION: This bush cutter which has an engine 2 at the base end of a bush-cutting rod 1, pivotally has a rotary cutting blade 3 at the tip end, and has a handle 4 for cutting operations in the middle portion is characterized by detachably disposing a chemical tank 5 between the engine 2 and the handle 4, and disposing a supply route 6 for supplying and guiding a chemical from the chemical tank 5 to the rotary cutting blade 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a chemical (liquid) application device for a brush cutter, which supplies a chemical to a cutting blade during mowing and applies the chemical to a cut end of the cut grass.

A technique for rotating a cutting blade in the form of a nylon cord coated with a chemical and applying the chemical adhering to the nylon cord to the cut end surface of the grass when cutting the grass is known (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 10-108523 (second term, FIG. 2)

  The brush cutter needs to be simple and lightweight because the mowing operator carries out the mowing work while holding and holding the mower. For this reason, even when applying a weed growth-suppressing agent during the cutting operation, this condition is satisfied, and the cutting operation can be easily performed in the cutting operation over a long period of time.

According to the first aspect of the present invention, there is provided a brush cutter having an engine 2 at a base end portion of a brush cutter 1, a rotary cutting blade 3 mounted at a tip portion, and a handle 4 for cutting operation disposed at an intermediate portion. The brush cutter 1 is provided with a medicine tank 5 between the engine 2 and the handle 4 so that the medicine tank 5 can be attached, and a supply path 6 for supplying and guiding the medicine from the medicine tank 5 to the cutting blade 3 is provided. It is set as the structure of the chemical | medical agent coating device characterized by the above. The harvester carries the brush cutter 1 and holds the handle 4, and cuts the cutting blade 3 at the tip while swinging left and right. A chemical (liquid) is supplied from the tank 5 attached to the brush cutter 1 to the cutting blade 3 through the supply path 6. The chemical supplied to the cutting blade 3 part is applied to the cutting cut surface of the grass cut by the cutting blade 3. The chemical tank 5 is attached between the engine 2 and the handle 4 of the brush cutter 1 and maintains the balance of the weight of the front and rear of the brush cutter regardless of the increase or decrease of the chemical amount.
The invention according to claim 2 is a medicine applicator for a brush cutter, characterized in that a medicine can be supplied along the lower surface of the cutting blade 3. The chemical supplied from the tank 5 through the supply path 6 along the brush cutter 1 is supplied to the lower surface of the cutting blade 3 and applied directly to the cut end surface of the weed to be cut by the cutting blade 3. For this reason, the application effect | action of a chemical | medical agent can be improved, the amount of applied chemical | medical agents can be decreased, the capacity | capacitance of a tank 5 can be made small and a portable weight can be made light.

According to the first aspect of the present invention, it is possible to attach the tank 5 to the brush cutter 1 while maintaining the front / rear weight balance as the whole brush cutter, and to perform the brush cutting work easily and easily for a long time. Further, the operation by the handle 4 can be similarly maintained regardless of the increase or decrease of the amount of medicine stored in the tank 5, and the medicine application work can be performed by simply attaching the tank 5 or the supply path 6 to the existing brush cutter. Can be used easily.
In the invention according to claim 2, since the medicine supplied to the lower surface of the cutting blade 3 is directly applied to the cut end face of the weed cut and cut by the rotation of the cutting blade 3, the medicine application effect is made effective. It is possible to reduce the amount of drug applied and supplied, reduce the capacity of the drug tank 5 and reduce the weight of the machine body.

In the brush cutter shown in the drawing, an engine 2 and a disc-shaped cutting blade 3 driven by the engine 2 are arranged at both ends of a long cylindrical bush 1 and an operation handle 4 is provided at a central portion between them. Provided. A hook 8 for attaching a shoulder belt 7 is provided on the side closer to the engine 2 than the handle 4.
Here, the drug application device according to the present invention has an engine 2 at the base end portion of the brush cutter 1, a rotary cutting blade 3 is mounted at the distal end portion, and a handle 4 for cutting operation is arranged at the intermediate portion. In this brush cutter, the brush cutter 1 is provided with a medicine tank 5 between the engine 2 and the handle 4 so that the medicine tank 5 can be attached, and a medicine path for supplying and guiding the medicine from the medicine tank 5 to the cutting blade 3. 6 is provided. The drug application device is characterized in that 6 is provided.
2. A medicine applicator for a brush cutter, characterized in that a medicine can be supplied along the lower surface of the cutting blade 3. The chemical supplied from the tank 5 through the supply path 6 along the brush cutter 1 is supplied to the lower surface of the cutting blade 3 and applied directly to the cut end surface of the weeds cut by the cutting blade 3.

  The brush cutter 1 has a cylindrical shape, and a transmission shaft 9 that rotationally transmits the cutting blade 3 from the engine 2 is mounted inside. A clutch housing 10 is provided at the base end of the brush cutter 1 on the engine 2 side, and a gear case 12 having a gear 20 for transmitting the cutting blade shaft 11 from the transmission shaft 9 is provided at the distal end side. A pair of left and right handles 4 are provided in a bifurcated shape at the middle portion of the brush cutter 1, and a brush cutting operation can be performed by holding it with both left and right hands. When the brush cutter is hung by the belt 7 or the like to be suspended, the hook 8 is provided near the position of the center of gravity of the entire brush cutter. The attachment position of the hook 8 is set slightly closer to the engine 2 than the attachment position of the handle 4.

  It is preferable that the drug tank 5 for storing the drug solution is made of a synthetic resin or the like and is light in weight and formed in an elongated shape along the brush cutter 1. The tank 5 is attached along the lower side of the brush cutter 1 between the hanger hook 8 and the clutch housing 10 on the engine 2 side. This attachment is designed to be as light as possible. The tank 5 is superposed on the brush cutter 1 and the attachment band 34 in the form of a magic fastener is wound around and attached. Magic fasteners 35 are formed at both ends of the attachment band 34. A receiving portion 29 having a concave cross section is formed along the upper surface of the tank 5 to maintain a stable polymerization state. Further, a recessed surface 36 can be formed on the lateral side surface of the tank 5 so that the tank 5 can easily come into contact with the waist contact portion of the operator. Reference numeral 16 denotes a cap of a supply port provided at the rear upper part of the tank 5, and 17 is a cock for opening and closing the supply port 18 (FIG. 2). As another example of mounting the tank 5, hooks 37 are provided on the front and rear of the brush cutter 1, and the hook 13 on the tank 5 side is engaged with the hooks 5 so as to be detachably mounted (FIG. 3). In addition, a receiving portion 29 is formed in a concave cross-sectional shape that surrounds the outer periphery of the brush cutter 1 with the shape of the tank 5, and a latch 14 is provided so as to hang around the brush cutter 1. It can also be set as the form which attaches so that between the tank upper parts 15 of the right-and-left both sides of the shape saddle seat 29 may be connected (FIG. 4).

  Further, a stopper 30 in the form of an arc-shaped hook that can be freely opened and closed is formed on the upper part of the tank 5 made of synthetic resin, and the seat 29 of the tank 5 is placed below the brush cutter 1. And by closing the engagement edge 31 of the stopper 30 with the engagement protrusion 32 integrally formed on the tank 5. The tank 5 is attached to and detached from the 1. The hinge portion 33 of the stop lid 30 is based on the bendability based on the resin material of the tank 5 itself, and the engagement state with the engagement protrusion 32 is maintained by the curved elasticity of the stop lid 30 (FIG. 5). In this way, the tank 5 attached along the brush cutter 1 has the cap 16 for opening and closing the supply port 18 and the opening and closing cock 17 for supplying the medicine. A hose as a supply path 6 is connected to the supply port 18 so that the medicine can flow down to the cutting blade 3 on the distal end side. The supply path 6 is made of a relatively flexible material such as a rubber hose, and the supply path 6 is clamped by a clamp 19 so that the amount of the supplied medicine can be adjusted.

  The tip of the supply path 6 is connected to the gear case 12 and supplied to the upper surface of the disc-shaped cutting blade 3 from the nozzle 21 supported integrally with the gear case 12. Alternatively, the medicine and the lower surface of the cutting blade 3 may be supplied. In this embodiment, as shown in FIG. 6, a medicine guide chamber 22 that supplies and diffuses medicine to the entire periphery of the lower surface of the cutting blade 3 is configured at the center of the lower surface of the cutting blade 3, and the central portion of the cutting blade shaft 11 from the supply path 6. The medicine is supplied through the guide path 23 formed along the line. A gear blade 12 is mounted on the gear case 12 along the vertical direction and is rotated from the lower end portion of the transmission shaft 9 of the brush cutter 1 via the bevel gear 20. A guide path 23 is formed along the connecting pipe 24, and the supply path 6 is fitted and connected to the connecting pipe 24 at the upper end. The connecting pipe 24 is attached and fixed to a case cover 25 integral with the upper end of the gear case 12 with respect to the rotating cutting blade shaft 11. At the lower part of the cutting blade shaft 11, the central portion of the disc-saw-shaped cutting blade 3 is fixed and rotates integrally. A disc-shaped support plate 26 is integrally attached to the lower surface center portion of the cutting blade 3, and a thin guide chamber 22 is formed between the cutting blade 3 and the support plate 26. A drug infiltration port 27 is formed at an appropriate interval on the outer periphery of the guide chamber 22, and the drug supplied into the guide chamber 22 flows out or leaches outward by a centrifugal force effect by rotation. The lower end portion of the guide path 23 of the cutting blade shaft 11 communicates with the central portion of the guide chamber 22 to allow the medicine to flow. A sliding plate 28 that is in sliding contact with the mowing surface is rotatably provided below the support plate 26. The guide chamber 22 can be filled with a sponge material or the like to maintain the medicine absorption retention and stable fluidity.

  The engine 2 is driven to rotate the cutting blade shaft 11 and the cutting blade 3 through the transmission shaft 9 and the like. The operator carries the brush cutter with the belt 7 on his shoulder and holds the handle 4 to perform the cutting operation. In this working posture, the tank 5 portion of the brush cutter 1 is located on the side of the operator's waist, so that even if the brush cutter 1 is swung to the left and right during the brushing operation, There is almost no movement, and the center of gravity of the airframe can be maintained at a fixed position, and a stable carrying state can be achieved. When the cock 13 is opened and the medicine is applied, the medicine flows out through the hose supply path 6 to the applicator 21 of the rotating portion of the cutting blade 3, and the lower surface (back side surface) of the cutting blade 3 from the applicator 21. (FIG. 1) and applied to the cut end portion of the weed cut by the cutting blade 3. In the form in which the medicine is supplied from the applicator 21 to the back surface of the cutting blade 3, it is diffused outward by the rotary centrifugal action of the cutting blade 3 and applied to the cut end portion of the weed of the cutting cut. Further, even in a form (FIG. 6) in which the medicine is leached from the guide chamber 22 to the lower surface of the cutting blade 3, the inlet 27 is passed from the supply passage 6 through the connecting pipe 24, the guide passage 23, the guide chamber 22, and the like. To flow out and adhere along the lower surface of the cutting blade 3. At this time, the medicine in the guide chamber 22 flows out to the inlet 27 by the centrifugal force generated by the rotation of the guide chamber 22 together with the cutting blade 3, and the medicine in the subsequent guide path 23 and the supply path 6 is sucked. Can be drained into. For this reason, the amount of leaching to the lower surface of the cutting blade 3 can be stabilized, and leaching can be performed continuously and smoothly without interruption. Also, in this drug application action, since it is applied so as to be applied directly to the cut end surface of the weed cut and cut by the cutting blade 3, the drug loss during drug application is reduced and the application efficiency is increased. Can reduce the amount of drug used.

The perspective view of a brush cutter, and a partial enlarged perspective view. The perspective view which shows the example of attachment of the tank part. The perspective view which shows the other example. The perspective view which shows the other example. The perspective view which shows the other example. The side view which shows another example of a cutting blade part.

Explanation of symbols

1 Brush cutter 2 Engine 3 Cutting blade 4 Handle 5 Tank

Claims (2)

  In a brush cutter having an engine (2) at the base end of the brush cutter (1), a rotary cutting blade (3) mounted at the tip, and a handle (4) for cutting operation arranged at the middle The brush cutter (1) is provided with a medicine tank (5) between the engine (2) and the handle (4) so as to be attachable, and the cutting blade (3) from the medicine tank (5). A drug application device characterized in that a supply path (6) for supplying and guiding the drug is provided.   A medicine applicator for a brush cutter, wherein a medicine can be supplied along the lower surface of the cutting blade (3).

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