JP2008125461A - Device for excavation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an epoch-making device for excavation, exhibiting an advantage not conventionally available. <P>SOLUTION: This device for excavation using an electric power rotary tool 1 is provided by placing a grip part 3 installed with a rotary switch 2 of the electric power rotary tool 1 in an upper direction and the tip end of the rotary shaft in a lower direction, erecting the electric power rotary tool 1 on the upper part of a gear box rotating the output shaft 23 at a reduced speed by the rotation of the rotary shaft 4 of the electric power rotary tool 1, installing a drill for digging 7 joined with the output shaft 23 of the gear box 6 perpendicularly at the gear box 6, constituting the device for excavation main body 9 by installing a handle part 8 gripped by an opposing hand to the hand griping the above grip part 3 at the gear box 6, fixing the device for excavation main body 9 on a ground surface, and perpendicularly installing a guiding body-sliding part 11 at the device for excavation main body 9, for guiding the vertical movements of the device for excavation main body 9 guided by a guiding body 10 installed at the device for excavation main body 9. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a digging apparatus for forming a hole for adding fertilizer to soil in advance when fertilizing in an orchard, for example.

  For example, fertilization in an orchard is performed by burying a bar-shaped fertilizer formed in a bar shape at an arbitrary position in the soil. It is hard to dig a hole with an excavator or fill it.

  Therefore, conventionally, for example, as disclosed in Japanese Utility Model Laid-Open No. 7-44609 and Japanese Patent Laid-Open No. 11-89321, a digging apparatus that forms a hole in the soil with a drill that rotates by driving of a drive source (hereinafter, a conventional example) ) Have been proposed.

  This conventional example has a structure in which a drill is suspended from a base on which an engine as a drive source is mounted. If this conventional example is used, it is only necessary to put rod-shaped fertilizer into a hole formed by a drill. Compared to driving or drilling in the work, the work of burying the bar fertilizer is simplified and the burden on the operator is reduced.

Japanese Utility Model Publication No. 7-44609 Japanese Patent Laid-Open No. 11-89321

  However, since all of the conventional examples have a complicated and large structure using an engine as a drive source, there are problems such as low maneuverability and poor workability, and high cost and poor mass productivity.

  As a result of repeatedly conducting various experiments and researches, the present inventors have developed an epoch-making digging apparatus that exhibits unprecedented effects.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A drilling device using the electric rotating tool 1, wherein the electric rotating tool 1 is provided with the gripping portion 3 provided with the rotation switch 2 on the upper side and the tip of the rotating shaft on the lower side. The electric rotating tool 1 is erected on the upper portion of the gear box 6 that decelerates and rotates the output shaft 23 by the rotation of one rotating shaft 4, and is used for digging holes connected to the output shaft 23 of the gear box 6. A drill 7 is suspended from a gear box 6, and a handle portion 8 is provided in the gear box 6 to be gripped by a hand opposite to the hand that grips the grip portion 3. The digging apparatus main body 9 is fixed to the ground, and the guide body sliding portion 11 is guided by a guide body 10 provided in the digging apparatus main body 9 to guide the vertical movement of the digging apparatus main body 9. The present invention relates to a digging apparatus characterized by being suspended from the digging apparatus main body 9.

  Further, the handle portion 8 is configured by providing the gear box 6 with a rod-like body protruding in a direction orthogonal to the axial direction of the rotating shaft 4 of the electric rotating tool 1. This relates to the digging apparatus according to item 1.

  Further, the guide body sliding portion 11 is slidably provided on a guide body 10 that is suspended in parallel with the left and right positions of the drill 7 at the left and right positions of the drilling device main body 9. It concerns on the digging apparatus of any one of Claim 1, 2 characterized by these.

  Further, the guide body sliding portion 11 is provided with a stepping portion 5 that presses the lower end portion of the guide body sliding portion 11 against the ground by a stepping operation. It concerns on the digging apparatus of any one of these.

  5. The digging according to any one of claims 1 to 4, wherein the gear box 6 is provided with a connecting portion 12 capable of detachably connecting the electric rotating tool 1. It concerns the device.

  The digging apparatus main body 9 is provided with a biasing body 13 that biases the guide body sliding portion 11 upward. This relates to the digging apparatus.

  Moreover, the ground penetration part 14 is provided in the lower end part of the said guide body sliding part 11, It concerns on the digging apparatus of any one of Claims 1-6 characterized by the above-mentioned. .

  Moreover, the wheel 28 is provided in the lower end part of the said guide body sliding part 11, It concerns on the digging apparatus of any one of Claims 1-7 characterized by the above-mentioned.

  Further, the gear box 6 is provided with a stopper body 25 for preventing the guide body sliding portion 11 from sliding upward with respect to the guide body 10. This relates to the digging apparatus described in the item.

  Since the present invention is configured as described above, it has a smaller and lighter structure than the above-described conventional example, so it has high maneuverability and extremely good workability. It will be an epoch-making digging device that exhibits unprecedented operational effects such as excellent performance.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  When digging into the soil, for example, with one hand, the gripping part 3 of the electric rotating tool 1 standing on the upper part of the gear box 6 is gripped, and the hand that grips the gripping part 3 The handle 8 provided on the gear box 6 is gripped with the opposite hand, and then the guide body sliding part 11 provided on the drilling device main body 9 fixes the drilling device main body 9 to the ground. Then, the drill 7 is rotated by operating the rotation switch 2 of the electric rotating tool 1 with the hand holding the gripping portion 3, and then the guide body sliding portion 11 is slid with respect to the guide body 10. When the digging apparatus main body 9 is moved downward, the rotating drill 7 is inserted into the soil, and then a hole is formed at the location where the drill 7 is removed.

  Fertilization is completed by putting, for example, a rod-shaped fertilizer into the hole formed in the soil.

  Therefore, unlike the above-described conventional example, the electric rotating tool 1 is adopted as a drive source, so that the structure is small and light. Therefore, the maneuverability is high, the workability is very good, and the cost is low because of the simple structure. It will be excellent in mass productivity.

  In addition, since the present invention is an extremely efficient structure (a structure without waste) that is used as a part for gripping the grip part 3 of the electric rotating tool 1 as it is, a reduction in size and weight is achieved also in this respect. Will be.

  By the way, the present invention achieves the reduction in size and weight of the apparatus as described above, but includes a structure that prevents the occurrence of danger that is a concern due to the reduction in size and weight.

  In other words, in a structure in which a drill is rotated by driving a drive source to drill a hole, for example, when a tree root or rope is wound around the rotating drill during drilling, the device has a lightweight and unstable structure. The more likely it is that the drill will be pulled by the rotation of the drill.

  In this respect, the present invention has a structure in which the drilling device main body 9 is always fixed to the ground by the guide body sliding portion 11 during the drilling operation with the drill 7, and the operator uses both hands. The drilling device main body 9 can be supported and, of course, the drill 7 can be turned and stopped by operating the rotary switch 2 provided in the gripping part 3 without releasing the hand supporting the drilling device main body 9. Therefore, while the drill 7 is rotating, it is possible to work in a state where the drilling device main body 9 is firmly supported by both hands at all times (a state where the drilling device main body 9 is held and pressed toward the ground). Therefore, it is possible to prevent the occurrence of danger as described above.

  Further, the present invention can reliably rotate the power of the electric rotating tool 1 suitable for digging using the gear box 6.

  A first embodiment of the present invention will be described with reference to the drawings.

  The present embodiment is a digging apparatus A using the electric rotating tool 1.

  Specifically, as shown in FIGS. 1 and 2, the main body 9 of the digging apparatus has the gripping portion 3 provided with the rotation switch 2 of the electric rotating tool 1 with the tip of the rotating shaft facing down. The electric rotating tool 1 is erected on the upper part of a gear box 6 that decelerates and rotates the output shaft 23 by rotating the rotating shaft 4 of the electric rotating tool 1. The connected drilling drill 7 is suspended from the gear box 6, and the gear box 6 is provided with a handle portion 8 that is gripped by a hand opposite to the hand that grips the grip portion 3. .

  As shown in FIGS. 1 and 2, the electric rotating tool 1 has a known structure in which a gripping portion 3 is provided at the base end portion of a gun-shaped base body 1 </ b> A having a rotating shaft 4 projecting from the distal end portion. A turning device (not shown), electronic components, etc. are built in the base 1A.

  In addition, a chuck portion 4a is provided at the tip of the rotating shaft 4 of the electric rotating tool 1 so that a rod-shaped mounted body can be detachably inserted and mounted.

  In addition, the electric rotating tool 1 is provided with a rotation switch 2 at an inner corner portion of the gripping portion 3 (a position where the finger can be operated by a finger gripping the gripping portion 3).

  The electric rotating tool 1 is not limited to the type provided with the outlet 1a connected to the power source shown in the figure, but may be a type with a battery.

  As shown in FIGS. 1 and 2, the gear box 6 is a reduction gear configured by rotatably accommodating a pair of gears 15 and 16 having different diameters in an appropriate metal case body 6A.

  Of the pair of gears 15, 16, one small diameter gear 15 is provided on the input shaft 17 detachably connecting the rotation shaft 4 (chuck part 4 a) of the electric rotating tool 1, and the other large diameter. These gears 16 are provided on an output shaft 23 for detachably connecting the drill 7, and are connected to each other via a chain 18. Reference numeral 19 denotes a bearing with a bearing which is provided in the case body 6A and rotatably supports the input shaft 17 and the output shaft 23.

  Accordingly, when the input shaft 17 is rotated by rotating the rotating shaft 4 of the electric rotating tool 1, the output shaft 23 rotates at a reduced speed via the gears 15 and 16.

  Further, the gear box 6 is provided with a connecting portion 12 that can detachably connect the electric rotating tool 1.

  As shown in FIGS. 1 and 2, the connecting portion 12 is provided with a through portion 6a at a predetermined position on the upper surface of the case body 6A, and is electrically rotated by being inserted into the through portion 6a at the peripheral edge of the opening. A ring-shaped holding member 12A for fastening and holding the base end portion of the tool 1 is provided.

  The rotating shaft 4 of the electric rotating tool 1 connected to the gear box 6 via the connecting portion 12 is connected to the input shaft 17.

  Further, a part of the output shaft 23 protrudes at a predetermined position on the lower surface of the case body 6A, and a recessed portion 23a into which the proximal end portion of the drill 7 is inserted is provided at the protruding portion, and the insertion portion 5a. The base end portion of the drill 7 fitted into the screw 7 can be fastened and fixed by the screw body 20.

  The drill 7 is formed of an appropriate metal member as shown in FIGS. 1 and 2, and is configured by forming a drilling blade portion 7b in a spiral shape on the peripheral surface of the shaft portion 7a.

  The base portion of the drill 7 is provided with a fitting portion 7c that is fitted and connected to the concave portion 23a of the output shaft 23 described above, and a flat portion 7c ′ is formed on the peripheral surface of the fitting portion 7c. . The flat portion 7 c ′ is a portion that is fastened and fixed by the screw body 20.

  The gear box 6 is provided with a handle portion 8.

  As shown in FIG. 1, the handle portion 8 is a rod-like body protruding from a predetermined position on the side surface of the case body 6 </ b> A. The handle portion 8 is configured by fitting a grip material 8 b on the flange portion 8 a. The electric rotating tool 1 is configured to protrude in a direction perpendicular to the axial direction of the rotating shaft 4 of the electric rotating tool 1.

  Accordingly, the operator grips the grip portion 3 with one hand, and grips the handle portion 8 with a hand opposite to the hand that grips the grip portion 3, so that both hands firmly The digging apparatus main body 9 can be supported in a state of being held.

  The digging apparatus main body 9 has a function of fixing the digging apparatus main body 9 to the ground E, and is provided with a guide mechanism 21 for guiding the vertical movement of the digging apparatus main body 9.

  Specifically, the guide mechanism 21 includes a guide body 10 provided on the left and right side surfaces of the case body 6A, and a guide body sliding portion 11 that slides on the guide body 10.

  As shown in FIG. 1, the guide body 10 is formed by forming an appropriate metal member into a cylindrical shape, and is arranged side by side with the drill 7 described above on the left and right side surfaces of the case body 6 </ b> A according to the gear box 6 ( (Parallel state).

  As shown in FIG. 1, the guide body sliding portion 11 includes a pair of sliding bar members 11a and 11b and a connecting member 11c that connects the sliding bar members 11a and 11b at the lower ends.

  The sliding rod members 11a and 11b are formed of an appropriate metal member, and one sliding rod member 11a is set longer than the other sliding rod member 11b. At the upper end of the sliding rod member 11a, a retaining portion 11a ′ for preventing the sliding rod member 11a from coming off from the guide body 10 is provided.

  Further, the lower end portions of the sliding rod members 11a and 11b are each formed in a sharp shape, and are configured as a ground insertion portion 14 for insertion into the ground E.

  The connecting member 11c is formed of an appropriate metal plate as shown in FIG. 1, and sliding rod members 11a and 11b are connected to the left and right ends of the connecting member 11c in a penetrating state. A through hole 11c ′ that penetrates the drill 7 is formed in the part.

  An annular member 22 made of resin is provided at the peripheral edge of the through hole 11c ′, and the inner hole 22a of the annular member 22 is set to a diameter that is as close as possible to the excavating blade portion 7b of the drill 7. Has been.

  The annular member 22 exhibits the function of scraping off the soil adhering to the drill 7, and the connecting member 11c prevents the soil from splashing.

  A stepping portion 5 is provided on the connecting member 11c.

  As shown in FIG. 1, the stepping portion 5 is formed by bending a rod-like member, and is provided at a rear position of the connecting member 11c.

  The lower end portion of the stepping portion 5 is configured to be positioned above the lower end of the ground insertion portion 4 related to the sliding rod members 11a and 11b when viewed from the horizontal direction.

  Accordingly, by stepping on the stepping portion 5, the guide body sliding portion 11 lifted and urged by the urging body 13 described later can be lowered by sliding the guide body 10.

  As shown in FIG. 1, the urging body 13 is constituted by a coil spring, and is provided between the lower surface of the case body 6A of the gear box 6 and the connecting member 11c.

  Therefore, the guide body sliding portion 11 is constantly urged upward by the urging body 13, and the urging body 13 inserts the drill 7 while stepping on the stepping portion 5 provided on the connecting member 11c. In doing so, it helps to move the drill 7 downward (in the excavation direction).

  A stopper that holds the guide body sliding portion 11 in a lowered state may be provided.

  The digging work in the digging apparatus A having the above configuration will be described.

  First, while holding the grip portion 3 of the electric rotating tool 1 erected on the upper portion of the gear box 6 with one hand, the gear box 6 with a hand opposite to the hand that grips the grip portion 3. The grip 8 provided on the top of the drill 7 is gripped, and the tip of the drill 7 is applied to the part (ground E) where the hole is formed as shown in FIG.

  Subsequently, as shown in FIGS. 4, 5, and 6, the stepping portion 5 is stepped on and stepped down against the urging force of the urging body 13, and the ground stab provided at the tip of the guide body sliding portion 11. The insertion part 14 is pierced into the ground E, and the digging apparatus main body 9 is fixed to the ground E.

  Subsequently, the drill 7 is rotated by operating the rotation switch 2 of the electric rotating tool 1 with a hand holding the gripping portion 3, and the guide body sliding portion 11 is slid with respect to the guide body 10. When the digging apparatus main body 9 is moved downward, the rotating drill 7 is inserted into the soil as shown in FIG. At this time, the soil that adheres to the drill 7 and is carried to the ground is prevented from moving upward by the connecting member 11c of the guide body sliding portion 11 and is bounced off.

  Thereafter, as shown in FIG. 8, a hole H is formed at a location where the drill 7 is removed.

  Fertilization is completed by putting, for example, a rod-shaped fertilizer F into the hole H formed in the soil.

  Since the present embodiment is configured as described above, by adopting the electric rotating tool 1 as a drive source, the structure is small and light, so the maneuverability is high, the workability is very good, and the simple structure The cost will be lower and the mass productivity will be better.

  Further, in the present embodiment, the handle portion 8 is configured by providing the gear box 6 with a rod-like body that protrudes in a direction perpendicular to the axial direction of the rotating shaft 4 of the electric rotating tool 1. A person can obtain a state of firmly supporting the digging apparatus main body 9 with both hands.

  Further, in this embodiment, the guide body sliding portion 11 is slidably provided on the guide body 10 that is vertically arranged in parallel with the left and right positions of the drill 7 at the left and right positions of the drilling apparatus main body 9. Therefore, sliding with respect to the guide body 10 is performed smoothly and reliably.

  Further, in this embodiment, the guide body sliding portion 11 is provided with the foot step portion 5 that presses the lower end portion of the guide body sliding portion 11 against the ground E by the stepping operation. The digging operation can be performed in a state where the main body 9 is firmly fixed to the ground E.

  In the present embodiment, the gear box 6 is provided with the connecting portion 12 that can removably connect the electric rotating tool 1, so that the existing electric rotating tool 1 can be used.

  Further, in this embodiment, since the digging apparatus main body 9 is provided with a biasing body 13 for biasing the guide body sliding portion 11 upward, the drill 7 is inserted into the soil by the biasing body 13. Assistance at the time of insertion is obtained, and insertion of the drill 7 is facilitated.

  Further, in this embodiment, since the ground insertion portion 14 is provided at the lower end portion of the guide body sliding portion 11, the digging operation is performed in a state where the digging apparatus body 9 is firmly fixed to the ground E. Can be done.

  A second embodiment of the present invention will be described with reference to the drawings.

  In this embodiment, a wheel 28 is provided at the lower end of the guide body sliding portion 11.

  Specifically, as shown in FIG. 9, a pair of wheels 28 are provided at the left and right positions of the connecting member 11c at the lower end portion of the guide body sliding portion 11, and at least the lower end position of each wheel 28 is In the state where the guide body sliding portion 11 is lowered with respect to the guide body 10, the guide body sliding portion 11 is configured to be positioned below the tip of the drill 7.

  Further, in this embodiment, as shown in FIG. 11, the gear box 6 is in contact with the upper end portion of one sliding rod member 11b related to the guide body sliding portion 11, and the guide body slides on the guide body 10. A stopper body 25 that prevents the portion 11 from sliding upward is provided, and the stopper body 25 is configured to hold the above-described state where the guide body sliding portion 11 is lowered most. The operation of the stopper body 25 can be operated against the return bias of the biasing body 27 with the hand holding the handle portion 8.

  Therefore, it is very convenient to place the wheel 28 in a grounded state (a state where the tip of the drill 7 is floated with respect to the ground E) during movement and storage.

  Further, in this embodiment, as shown in FIG. 10, a pair of gears 15 and 16 provided in the gear box 6 are connected via a rotation transmission gear 24.

  Further, in this embodiment, as shown in FIG. 14, a ground insertion portion 14 is provided at the foot portion 5 at the lower end portion of the guide body sliding portion 11.

  The ground insertion portion 14 is configured by providing a connecting member 11c associated with the guide body sliding portion 11 with a rod-shaped body 14A having a sharp tip, and the rod-shaped body 14A is biased upward by a biasing body 26. Then, when the stepping portion 5 is stepped on and is stepped against the urging body 26, it is inserted into the ground E.

  Although not shown, a biasing body 13 that pulls up and biases the guide body sliding portion 11 may be provided also in this embodiment.

  The rest is the same as in Example 1.

  The present invention is not limited to the first and second embodiments, and the specific configuration of each component can be designed as appropriate.

1 is a perspective view showing Example 1. FIG. 3 is an explanatory cross-sectional view of a main part according to Embodiment 1. FIG. FIG. 3 is an explanatory diagram of a use state of the first embodiment. FIG. 3 is an explanatory diagram of a use state of the first embodiment. FIG. 6 is an operation explanatory diagram of a main part according to the first embodiment. FIG. 3 is an explanatory diagram of a use state of the first embodiment. FIG. 3 is an explanatory diagram of a use state of the first embodiment. FIG. 3 is an explanatory diagram of a use state of the first embodiment. FIG. 6 is a perspective view showing Example 2. FIG. 10 is an explanatory diagram of a main part according to a second embodiment. FIG. 10 is an explanatory diagram of a main part according to a second embodiment. FIG. 10 is an explanatory diagram of a use state of the second embodiment. FIG. 10 is an explanatory diagram of a use state of Example 3. FIG. 10 is an explanatory diagram of an operation of a main part according to the third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric rotation tool 2 Rotation switch 3 Gripping part 4 Rotating shaft 5 Foot part 6 Gear box 7 Drill 8 Handle part 9 Drilling machine main body
10 Guide body
11 Guide body sliding part
12 Connecting part
13 Energizing body
14 Ground penetration
23 Output shaft
25 Stopper body
28 wheels

Claims (9)

  A drilling device using an electric rotating tool, wherein the rotating shaft of the electric rotating tool is turned up with the gripping portion provided with the rotation switch of the electric rotating tool turned up The electric rotating tool is erected on the upper part of the gear box that decelerates and rotates the output shaft by rotating the shaft, and a drill for drilling connected to the output shaft of the gear box is suspended from the gear box. The box body is provided with a handle portion that is gripped by a hand opposite to the hand that grips the grip portion on the box, and the body of the digging device is fixed to the ground. A digging apparatus, characterized in that a guide body sliding portion guided by a guide body provided on the digging apparatus guides the vertical movement of the digging apparatus main body is suspended from the digging apparatus main body.   2. The digging according to claim 1, wherein the handle portion is configured by providing a bar-like body projecting in a direction perpendicular to the axial direction of the rotation shaft of the electric rotating tool in the gear box. apparatus.   The guide body sliding portion is slidably provided on a guide body that is suspended in parallel with the left and right positions of the drill at the left and right positions of the drilling device main body. The drilling apparatus according to any one of 1 and 2.   4. The stepping portion that presses the lower end portion of the guide body sliding portion against the ground by a stepping operation is provided in the guide body sliding portion. Drilling device according to.   The digging apparatus according to any one of claims 1 to 4, wherein the gear box is provided with a connecting portion that can detachably connect the electric rotating tool.   The digging apparatus according to claim 1, wherein the digging apparatus main body is provided with a biasing body that biases the guide body sliding portion upward.   The digging apparatus according to claim 1, wherein a ground insertion portion is provided at a lower end portion of the guide body sliding portion.   The digging apparatus according to claim 1, wherein a wheel is provided at a lower end portion of the guide body sliding portion.   The digging according to any one of claims 1 to 8, wherein the gear box is provided with a stopper body that prevents the guide body sliding portion from sliding upward with respect to the guide body. apparatus.

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