JP5281177B1 - Rotary drilling tool for vertical holes - Google Patents

Abstract

Provided is a rotary drilling tool for a vertical hole in which a cylindrical vertical hole is excavated without breaking the excavation wall surface by a slight manual pressure rotation, and the waste soil is scooped up and discharged as a series of rotational operations.
A longitudinally concave excavation plate f has a concave surface on a main axis e at each tip end of a connecting arm C that is movable and converged on each of supports A and K above and below a rotary main axis e. Each connecting arm C triangle is a manual cylindrical rotary excavator that is circularly moved relative to each other and the circular excavation plate f rotates in conjunction with the pressing and rotating operation to the spindle e, and is radially deployed from the central support A. The composition is covered with a fixed frame B with a fixed lock pin at the bottom, making it possible to adjust the diameter of the excavation circle, and approaching the lower supports A and K with the release of the fixed function by pulling up and rotating the spindle e Thus, each excavation plate f tip converges in the inner direction, making it easy to capture the pressure contact of the waste soil, and a vertical hole rotary excavator that is made by a series of slight manual rotation operations from excavation to waste soil discharge.
[Selection] Figure 1

Description

  The present invention relates to a manual rotary excavator for a cylindrical vertical hole.

In the case of planting in a narrow place such as a kitchen garden or simple drilling of a vertical hole for embedding garbage, it is often excavation work using a transplanting iron for horticulture or a small excavator. It is extremely difficult to excavate a cylindrical vertical hole having a certain depth, and as a result, it becomes considerably larger than the required hole diameter, and various problems are forced during practical use.
In addition, vertical drilling tools with screw-like rotary blades for thin piles and vertical drilling tools with two shovels facing inward for embedding utility poles exist, but both are mainly used for civil engineering work. Therefore, it cannot be said that the specification structure is suitable for the simple excavation condition of a relatively shallow cylindrical vertical hole required in general households.

Therefore, as described below, a manual rotary excavator that can be excavated while maintaining the hole diameter and a simple vertical hole excavator that is used for striking pressure have been devised.
US 5547128 Actual climb 3059240 The manual rotation deep hole digging tool of the fixed face-to-face shovel described in Patent Document 1 described above is a dedicated excavation tool that can be dug while maintaining the excavation diameter, but specialized for embedding narrow struts, The only reason to limit its use to vertical holes for thin piles is that the size of the equipment itself increases under conditions where the drilling diameter increases, and the resistance load during screw rotation increases and exceeds the manual operation capability. This is because of the inconvenience.
Further, in the striking excavator of Patent Document 2 described above, a movable rod having a gravitational force corresponding to a grab handle is provided to add a piston function, and a vertical hole is formed by applying striking pressure to the tip of the scoop by its vertical movement. However, there are still problems such as having to rely on other tools to discharge waste soil when the bore diameter exceeds a certain range.

  In addition, in a field where a relatively shallow cylindrical vertical hole drilling is required for planting and burying garbage in kitchen gardens, etc., in addition to a slight manual operation, the drilling diameter can be adjusted step by step depending on the situation. A possible simple excavating tool is required, and the existing vertical hole excavating tool described above cannot cope with the conditions as equipment in daily life.

  Therefore, in addition to drilling a cylindrical vertical hole without damaging the wall surface of the excavation by a slight manual rotation, it has a function to adjust the drilling bore diameter as desired, and also scoops up and discharges waste soil. Provides a rotary drilling tool for vertical holes that can be operated as a series of rotating operations.

  Each excavation plate (f) made of a steel plate that is concave in the longitudinal direction forms a circular rotary excavation blade with the concave surface facing the rotation main shaft (e), and is manually rotated in conjunction with the rotation main shaft (e). The excavator is provided with a central support A at the upper part of the main shaft (e) and a shaft end support K at the lower part, and a stopper W at the lowermost position of the main shaft (e) while making each of them free-moving conditions through the main shaft (e). The rotating main shaft portion is fixed and provided, and the upper and lower connecting arms (C) that are radially deployed in an umbrella shape with the respective support bodies (A, K) positioned in the vertical direction as convergence points, The excavation plate (f) and the vertical connection point (S, T) are movable in the vertical direction, and at the time of rotary excavation, each support (A, K) is placed at a predetermined vertical position of the main shaft (e) by a pressing and fixing structure described later. Is fixed, and each excavation plate (f) is interlocked with the rotation of the main shaft (e) to form a cylindrical rotary excavation blade. To exhibit the rotary excavation capability, the diameter at the time of rotating the drilling stage setting is done by rotating a circle 径調 clause function described later. See Figure 1

  The lengths of the upper and lower connecting arms C that form an umbrella-shaped radial deployment from the convergence portion of each support (A, K) described above are generally unified, and each connection that performs a radial deployment from the same support. The planar shapes of the isosceles triangles formed by the connection points between the adjacent excavation plates (f) adjacent to the arm C are substantially congruent, and the connection structures at both ends of each connection arm C are all vertically and vertically. It becomes a movable connection.

  In addition, as a conditional structure for determining various functions in the above-described rotary excavation, the interlocking function between the main shaft (e) and the upper and lower supports (A, K) at the time of the rotary excavation operation is achieved by a fixing structure by press rotation described later, In addition, the radial triangular composition by each connecting arm C that radiates and deploys with the central support A as the apex is fixed by covering alignment by a fixed frame B, which will be described later, the rotation circle diameter at the time of excavation is determined, In addition to releasing the pressing and fixing function by reversing the main shaft (e), the shaft end support K urged by the stopper W at the end of the main shaft as a waste soil discharge function moves and approaches in the direction of the central support A. By causing the tip of each excavation plate (f) to shrink inward, the waste soil is pressed against the inside of the cylinder, and the body is pulled up to facilitate grasping and discharging. Operation A rotary drilling tool which is made by a series of minor manual times cutting operation. See Figure 1

  In the above-described setting of the excavation diameter and the fixed shape maintenance function during rotation in connection with the fixed connection of the radial triangle composition related to the central support A, the radial adjustment position is adjusted to the same position on each connecting arm C radiated from the central support A. A plurality of through-holes (C1) are provided step by step at a predetermined interval, shape and angle, and fixed lock pins (B1) having a predetermined projection shape as many as the number of connecting arms (C) are formed on the bottom of the fixed frame B. Rotating at equal intervals in the circumferential direction, covering the radiating triangular composition with the central support A as the convergence point, covering the fixed frame B, and radiating by simultaneous alignment of each fixed lock pin (B1) and the adjustment through hole (C1) The entire triangular composition is fixed, the rotation circle diameter by the excavation plate (f) at the tip of each connecting arm C is set, and the stage adjustment is made by the arbitrary setting of the adjustment through hole (C1) applied at a predetermined interval. See Figure 3

  The fixed frame B has a fixed shape having a certain rigidity regardless of the shape in addition to the pressure covering by a predetermined weight, and the fixed lock pin (B1) and each connecting arm are effective conditions. In the matching structure with the adjustment through-hole (C1) on C, the fixed lock pin (B1) provided in the fixed frame B and the adjustment through-hole (C1) by the internal angle change between the connecting arm C and the main shaft (e). Since the alignment angle is different, the alignment angle between each adjustment through-hole (C1) incident angle on each connecting arm C and each fixed lock pin (B1) is individually set based on the pre-calculated adjustment angle for each stepped borehole diameter. The change angle is set by adjusting mainly the adjustment through hole (C1) on each connecting arm C, and the adjustment lock of the radial triangular composition applying the lever action with the fixed lock pin (B1) due to the fixed frame B's own weight. Function and control The fixed lock pin (B1) penetrating through the through hole (C1) has a predetermined effective dimension and is configured at each suitable angle for each step adjustment, so that it can be fixed against rotational pressing external force during excavation. In addition to maintenance, the overall shape is generated by the lever action of the adjustment through-hole (C1) and the fixed lock pin (B1) under the condition that the tip of the connecting arm C is movable by the weight of each excavation plate (f) during the main body lifting operation. Can be maintained.

  With the fixation of the radial triangular composition composed of each connecting arm C and each excavation plate (f) by the fixing frame B and the position fixing of both supports (A, K) by the helical structure fixing function described later, The distance between both supports (A, K) during rotary excavation and the distance between the upper and lower connecting points on the excavation plate (f) are generally the same, and the direction of the main shaft (e) and the excavation plate (f) Since the longitudinal outer surface direction is generally parallel, the cross-sectional structure of the rotary excavator at the time of pressing and rotating generally exhibits a parallelogram, but as a function of reducing frictional resistance during rotary excavation, the tip of each excavation plate (f) A function of reducing the external frictional resistance with the earth wall is added by finely adjusting each component size so that the rotational circle diameter of the portion is slightly open toward the outside. See Figure 1

  In addition, about each fixing function which promotes the fixed interlocking | linkage with the main axis | shaft (e) and each support body (A, K) accompanying the press rotation at the time of excavation operation mentioned above, each support of the center support body A and the shaft end support part K is supported. A spiral groove having a predetermined shape and angle is applied to the upper margins of both bodies (A, K) in the same spiral direction to form spiral grooves (G1, G2). Each of the fixed protrusions (F1, F2) is provided on the main shaft (e), which is located above the support (A, K), and is positioned at a predetermined vertical position. (F1, F2) has a structure in which each spiral groove (G1, G2) is interlocked with each other at the same time, and is in a state where an arbitrary cylindrical shape is maintained in combination with the above-described fixing adjustment function of the rotation circle diameter by the fixed frame B. Rotational excavation operation is possible. See Figure 2

  Further, when releasing the fixed interlocking function between the main shaft (e) and each support (A, K) during the press rotary excavation, the fixed state of the triangular composition related to the central support A by the fixed frame B described above is maintained. However, in addition to the fixed protrusions (F1, F2) being rotated upward by the reverse operation of the main shaft (e) to release the fixed connection, the shaft end support urged by the stopper W at the end of the main shaft Due to the change in the condition dimension in which the body K moves loosely in the direction of the central support A, the tip of the excavation plate (f) vertically connected to each connection arm C with the shaft end support K as the convergence point is in the internal direction. It becomes a rotary excavator for a vertical hole that makes it easy to catch and discharge excavated waste soil by a main body lifting operation by a series of manual rotations.

  In addition to releasing the fixed interlocking function by the main spindle reverse rotation operation at the time of lifting the main body, the various functions at the time of the reverse rotation lifting operation of the main body described above, and the waste due to the convergence operation of the excavation plate (f) tip during the body lifting operation As a structure for temporarily fixing the earth pressure contact state, a predetermined reverse spiral groove (G3) acting in a direction opposite to the spiral groove (G1, G2) of the upper margin is applied to the lower margin of the bottom of the central support A. The fixed protrusion (F2) on the main shaft (e) is captured by the reverse spiral groove (G3) at the bottom of the central support A by the reverse rotation of the main shaft, and the excavation plate (f) is in reverse rotation and the main body is lifted. In addition to being reduced, the waste soil pressure contact state due to the internal convergence of the tip of the excavation plate (f) is fixed and maintained, and a safety function is added to avoid inconvenience due to inadvertent release of waste soil. See Figure 2

  In addition, as a shape characteristic with a large circumscribed area of the structure forming the cylindrical excavation blade, depending on the soil conditions at the excavation site, an excessive burden is imposed on the manual rotary excavation due to rotational resistance, so As a function to reduce the frictional resistance, it is formed at the time of rotary excavation by setting the value of the radius that forms the concave surface of the excavation plate (f) to a value larger than the radius value at the time of maximum adjustment of the rotary excavation diameter described above. Rotating circles are due to the longitudinal end portions of each excavation plate (f), the contact area with the excavation earth wall generated in the cylindrical excavation blade is limited, the frictional resistance is reduced, and excavation work by light manual rotation operation Convenience functions that enable this are added.

  The rotary excavator of the present invention performs continuous excavation of a cylindrical vertical hole by a slight manual rotation operation in a narrow place, and also arbitrarily adjusts the circular diameter stepwise and captures the pressure contact of waste soil by a reverse operation. It is possible to easily perform from excavation to waste soil discharge by a series of rotation operations.

  According to the present invention, composting treatment by embedding raw garbage in soil becomes easy, especially as a use other than simple excavation of cylindrical vertical holes for planting vertical holes in kitchen gardens and garbage. It is expected to contribute to environmental conservation by promoting garbage reduction, and in addition to avoiding the damage of garbage scattering by birds and beasts by having a cylindrical vertical hole with an appropriate depth and caliber, By making the round edge of the excavation vertical hole a reinforcement treatment with a saddle-shaped ring made of a hard material, and adding a suitable lid, it is possible to prevent odors and insects as well as waterproofing together with measures against damage to birds and beasts.

During the grasping operation of the excavated waste soil according to the present invention, the lowermost end of the excavated plate (f) converges inward by the lever operation with the upper connection point S of the excavated plate (f) as an operating fulcrum. The upper connection point S of the connection arm C and the excavation plate (f) is set near the upper end of the excavation plate (f), and further, the extra portion of the excavation plate (f) above the connection point S is directed in the rotation circle. It is desirable that the upper end portion at the time of the lever action for grasping the waste soil is located inside the circular diameter at the time of the rotary excavation by adopting a curved shape.
In addition, the fixed frame B and the fixed lock pin (B1) exhibiting the function of locking and adjusting the rotational excavation circle diameter by fixing the radial triangular composition are fixed structures and have a certain rigidity and weight, The shape is not specified as long as the various conditions for the matching structure with the adjustment through hole (C1) are observed.

  As a schematic configuration of a prototype in which the rotary drilling tool for vertical holes according to the present invention is a manual rotation specification for general household use, a circular drilling blade with three drilling plates (f) is used, the overall length of the main body is approximately 80 cm, and the width of the drilling plate is approximately 80 cm. 13cm, length is about 28cm, depth of drillable range is about 0-40cm, and the adjustable range of drilling diameter is 3 steps of about 18cm, 21cm, 24cm, and the rotating spindle (e) is at hand A crank shape is formed between the spindle and the spindle function part, and a grip end (a) for assisting manual rotation operation is provided at the end on the hand side, and a rotating grip (b) for grasping is provided on the crank part, and further a clue when lifting A lifting hook (g) serving as an auxiliary protrusion is provided as a fixed object on the main shaft (e) to provide an auxiliary function during manual rotation operation. See Figure 1

  Overall image perspective and functional sectional view   Support structure image perspective view   Polygonal fixing frame and stage adjustment hole image perspective view

(1) Overall image (2) Functional cross-sectional view (3) Polygonal fixed frame image (4) Excavation diameter adjustment function image a Grip end b Rotating grip e Spindle f Drilling plate g Lifting hook A Central support B Fixed frame B1 Fixed Lock pin C Connection arm C1 Adjustment through hole E Movable connection part F1 Fixed projection F2 Fixed projection G1 Spiral groove G2 Spiral groove G3 Reverse spiral groove K Shaft end support S Connection point T Connection point U Excavation blade W Stopper

Claims (3)

It is a simple rotating manual excavator for a cylindrical vertical hole. At one end of each connecting arm (C) that is movable and converged on each of the upper and lower supports (A, K) of the rotating main shaft (e) and has an umbrella-shaped radial deployment. Each vertical excavation plate (f) is circular with the concave surface facing the main shaft (e), and the circular excavation plate (f) rotates in conjunction with the rotation of the main shaft (e). In the excavator, a predetermined number of adjustment through-holes (C1) are provided at the same position of each connecting arm (C) that develops the radial composition with the central support (A) as a base point, and at the bottom of one fixed frame (B) a rotating circumferential speed deployment radiation at equal intervals and the same number of the protruding fixing lock pin (B1), Ri by the fixed frame (B) coated fixing lock pin to the respective adjustment holes (C1) and (B1) at the same time through A rotary drilling tool for vertical holes, wherein the radial composition is fixed and the diameter of the drilling circle is adjusted stepwise. According to claim 1, in rotary drilling tool circular column drilled plate with the press rotating operation (f) is made the interlocking rotation of the main shaft (e), the drilling plate and the main shaft (e) Therefore spindle in the reverse operation (e) (F) The rotation interlocking with the shaft is released, and the shaft end support (K) urged by the stopper (W) provided at the end of the main shaft by the pulling operation makes loose movement toward the center support (A) , and during the reverse operation The reverse spiral groove (G3) receives the fixed protrusion (F2) on the main shaft (e) and functions as a reverse rotation, enabling the waste soil trapping state to be maintained and fixed by converging the inner direction of the tip of the excavation plate (f). The rotary excavator for a vertical hole according to claim 1, wherein:   In the radius reference value constituting the concave surface of the concave excavation plate (f) according to claim 1, as a function of reducing frictional resistance with the earth wall during rotary excavation operation, the excavation plate (f The rotary excavator for a vertical hole according to claim 1, wherein a radius value constituting the concave surface is larger.

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