JP2739828B2 - Drilling machine for burying columns of planted trees - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boring machine for burying poles of a planted tree, which mechanically drills holes in the poles when the poles are attached to a tree planted in a park or a garden.

[0002]

2. Description of the Related Art Generally, when trees are planted in a park or a garden, a support is attached to the trees so that the trees are not shaken by the wind. A pillar supporting such a tree is buried in the soil with a pair of pillars in which the lower ends of the two legs are inclined outward in a generally U-shape in the soil, close to the tree, and at the top of this pillar. The rungs are crossed and connected in a torii-shape, and the rungs are tied to the trees using a tether and the poles are attached to the trees planted. Then, when burying the pillar attached to the tree in the soil, the hole for inserting the pillar will be drilled, but when drilling by hand using a scoop etc., the work efficiency is poor, so this application The applicant has previously proposed in Japanese Utility Model Laid-Open Publication No. 4-99782 a pier burring machine capable of mechanically piercing a pier burring operation.

In this drilling machine, a mounting base having a pair of left and right rotary drills is detachably provided at the tip of an arm of a self-propelled working machine such as a back fork, and the arm of the back fork is moved up and down. Thus, the hole of the column is mechanically drilled by a rotary drill assembled to the mounting base.

[0004]

As described above, it is desirable that a pair of right and left columns attached to a tree be perforated in accordance with the inclination of the hole. For this reason, in the conventional drilling machine, a pair of right and left rotary drills are assembled to a mounting base provided at the end of the arm of the self-propelled work machine by inclining in a C-shape in accordance with the inclination angle of both columns. Figure 9
As shown in FIG. 7, when two holes H are simultaneously drilled by the rotary drill A1 attached according to the inclination of the column, the arm A of the self-propelled work machine is adjusted according to the inclination of each hole H.
The arm A of the self-propelled work machine that excavates the hole H is vertically moved substantially vertically. For this reason, even if the rotary drill A1 is inclined and assembled in accordance with the column, the rotary drill A1
Is different from the axial direction X1 of the shaft A and the excavation direction X due to the lifting and lowering of the arm A. Therefore, despite the fact that the rotary drill A1 is inclined and assembled, the hole H drilled by the rotary drill A1 is:
The outside of the hole H is vertical, and as a result, when the support is inserted into the hole H, the support B becomes loose. Therefore, complicated post-processing such as filling the outside of the hole H after the support B is inserted is necessary. Was.

The present invention is intended to solve such a problem, and it is an object of the present invention to provide a support for a planting tree capable of drilling an inclined hole for inserting a support by aligning the axis of the rotary drill with the direction of drilling of the rotary drill. An object of the present invention is to provide a drilling machine for burial.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a drilling machine for excavating a hole in a column attached to a planted tree, comprising a pair of left and right guide frames and the guide frame. An attachment member having a support frame for connecting the arm to the arm of a self-propelled work machine such as a back fork is detachably attached to the arm, and an elevating rod that slides up and down along the guide frame is provided. And a rotary drill having a drill driving device connected to the support frame, the guide frame is vertically rotatably mounted on the support frame, and the lifting rod is moved up and down along the guide frame above the guide frame. Means are provided.

[0007]

In the drilling machine according to the present invention, the arm of the self-propelled work machine is operated so that the support frame is installed near the tree when the column is attached to the tree. Thereafter, the arm is stopped, the drill driving device is operated to rotate the rotary drill, and the excavation driving means provided at the upper end of the guide frame is operated to move the lifting rod downward along the guide frame. I do. The rotating drill attached to the lower end of the lifting rod is advanced into the ground with the lowering of the lifting rod, and the hole is dug by rotating the rotating drill at the tip of the lifting rod. Then, after drilling a hole of a predetermined depth, the excavation driving means attached to the lower end of the lifting rod is operated in reverse, and the lifting rod is raised along the guide frame to drill a rotary drill provided on the lifting rod. By pulling out from the hole, the axis of the rotary drill coincides with the digging direction of the rotary drill due to the lifting and lowering of the lifting rod, and the inclined hole for burying the support is drilled.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 8 show one embodiment of the present invention,
As shown in the overall view of FIG. 1, a mounting member 3 is attached to a distal end of an arm 2 of a self-propelled working machine 1 such as a conventionally known back fork.
Is detachably attached. As shown in the front view of FIG. 2, the mounting member 3 has a rectangular cylindrical shape like the pair of left and right guide frames 4 formed in a rectangular cylindrical shape having a rectangular cross section and the guide frames 4 connecting the two guide frames 4. At the center of the back surface of the support frame 5, an attachment 7 pivotally supported via a pin 6 is attached to the tip of the arm 2 through a pin 6 as shown in a side view of FIG. Then, the support frame 5 is detachably attached to the arm 2 via the attachment 7 so as to be horizontal.

As shown in the sectional view of FIG. 3, a slide member 8 for assembling and fixing the guide frame 4 is slidably provided on both sides of the support frame 5, and an upper surface of the slide member 8 has Fixing bolt with handle 9
10 are screwed. Then, by rotating the handle 9 to loosen the fixing bolt 10, the distance between the slide members 8 is arbitrarily adjusted, and thereby the distance between the guide frames 4 is adjusted. A pair of L-shaped receiving plates 11 are fixed to both side surfaces of the guide frame 4, and semi-circular long holes 12 are formed in the both receiving plates 11 so as to be symmetrical left and right. The guide frame 4 is fixed to the slide member 8 by screwing the fixing bolt 10 </ b> A inserted into the slide member 8 to the slide member 8. By loosening the fixing bolt 10A of the guide frame 4, the mounting angle of the two guide frames 4 can be arbitrarily adjusted within the range of the elongated hole 12. The rotation range of the guide frame 4 fixed via the slide member 8 is within a range from vertical to approximately 20 degrees at the maximum. Further, a cylindrical guide tube 13 is screwed to a substantially central portion of the front surface of the support frame 5, and a grounding leg 14 is slidably fitted into the guide tube 13. A fixing bolt 10B for fixing the ground leg 14 is screwed.

Reference numeral 15 denotes an elevating rod which slides along the inner peripheral surface of the guide frame 4. An auger-type rotary drill 17 driven by a hydraulic motor 16 as a drilling driving device is directed downward at the lower end of the elevating rod 15. The elevating rod 15 is attached to the upper end of the guide frame 4 and fixed.
A hydraulic motor 18, which is a digging drive device for moving up and down along the axis, is installed and fixed. The drive shaft 18A of the excavating hydraulic motor 18
As shown in the sectional view of FIG. 4, a connecting rod 19 supported on a bearing 19A provided on the upper surface of the guide frame 4 is provided.
A screw rod 20 penetrating into the elevating rod 15 is coaxially connected and fixed through the screw rod 22. A screw hole 22A of a receiving plate 22 in which the screw rod 20 is fixed to a top plate 21 closing an upper opening of the elevating rod 15 is provided. The lifting rod 15 is moved up and down along the guide frame 4 by rotating the screw rod 20 by the excavating hydraulic motor 18 by screwing the drilling hydraulic motor 18, and drilling is performed by a rotary drill 17 provided at the lower end of the lifting rod 15. I do. The two hydraulic motors 16,
A drive source 18 is a hydraulic pump (not shown) provided in the self-propelled working machine 1.

The operation of the present invention configured as described above will be described.

As shown in FIG. 7, when a two-legged torii-shaped support B is attached to a tree T, first, a handle 9 is rotated to loosen a fixing bolt 10 to be screwed onto an upper surface of a slide member 8, and a support frame 5 is provided. After sliding the slide member 8 to be fitted to the column in accordance with the interval between the columns B, the handle 9 is rotated in the opposite direction to fix the slide member 8. Then, the fixing bolt 10A for fixing the guide frame 4 and the slide member 8 is loosened, and the angle of the guide frame 4 and, consequently, the angle of the elevating rod 15 that slides along the guide frame 4 are adjusted to the above-mentioned column B.
Adjust according to the inclination angle of. After setting the mounting angle of the guide frame 4 in this manner, the fixing bolt 10A is tightened to fix the guide frame 4. Further, a fixing bolt 10 screwed to the front surface of the guide cylinder 13 according to the depth of the hole to be drilled.
Loosen B and adjust the height of the foot 14. The mounting member 3 attached to the tip of the arm 2 of the self-propelled working machine 1 in this manner
After setting according to the support B, as shown in FIG.
The grounding leg 14 attached to the center of the support frame 5 is attached to a tree T
The arm 2 of the self-propelled work machine 1 is operated so as to be installed in the vicinity of. Thereafter, with the arm 2 stopped, the hydraulic pump (not shown) of the self-propelled working machine 1 is operated to operate both hydraulic motors 1.
When the rotary shafts 6 and 18 are rotated, the rotary drill 17 formed on the drive shaft thereof is rotated by the hydraulic motor 16 attached to the lower end of the elevating rod 15 as shown in FIG. The screw rod 20 is rotated by the provided hydraulic motor 18 via the connecting rod 19, and the elevating rod 15 screwed to the screw rod 20 moves downward along the guide frame 4.
As the lifting rod 15 descends, the rotary drill 17 attached to the lower end of the lifting rod 15 is advanced into the ground, and the rotation of the rotary drill 17 at the tip excavates the hole H. Then, after drilling a hole H having a predetermined depth, the hydraulic motor 18 provided at the upper end of the guide frame 4 is rotated in the reverse direction, and the elevating rod 15 is raised along the guide frame 4 to thereby raise and lower the elevating rod. Fifteen
A rotary drill 17 provided at the lower end of the shaft 15 is pulled out along the hole H, so that a hole H formed with the same inclination as the lifting rod 15 is formed. Thereafter, the support B is inserted into the hole H, and the crosspiece is fixed to the support B. In addition, when the four-legged torii-shaped support B shown in FIG. 8 is attached to the tree T, the above-described drilling operation may be repeated twice.

As described above, in the present invention, the drilling hydraulic motor 16 for rotating the rotary drill 17 and the excavating hydraulic motor for raising and lowering the elevating rod 15 along the guide frame 4.
1, the axis X1 of the rotary drill 17 and the digging direction X of the hydraulic motor 18 coincide with each other, and two holes H for inserting the support B can be simultaneously drilled in a single drilling operation, as shown in FIG. Moreover, since the holes H can be formed at the same inclination as the pillars B, post-processing such as filling the holes H as in the conventional case is unnecessary, and the drilling operation can be made more efficient.

In this embodiment, by operating the handle 9, the interval between the slide members 8 provided on the support frame 5 is adjusted, and the lift rod 15 assembled to the slide members 8 via the guide frame 4 is adjusted. The distance can be easily adjusted in accordance with the size between the columns B, and if the angle of the guide frame 4 assembled to the slide member 8 is adjusted by loosening the fixing bolt 10A, the inclination angle of the lifting rod 15 can be adjusted. It can be easily adjusted to suit. Further, by fixing the extendable grounding leg 14 to the center of the support frame 5 so that the grounding leg 14 is arranged in parallel with the tree T, when the arm 2 of the self-propelled work machine 1 is operated, Positioning of the rod 15 is easy. That is, it is desirable that the lifting rod 15 be formed symmetrically with respect to the tree T. As described above, if the grounding leg 14 is grounded on the front or back of the tree T, the grounding leg 14 is centered on the tree T. Can be arranged symmetrically. In addition, loosen the fixing bolt 10B and
By adjusting the height of 14, the hole H to be drilled by the rotary drill 17 can be adjusted to be shallower if the grounding leg 14 is elongated, and the hole H to be drilled can be adjusted to be deeper if the grounding leg 14 is shortened and shortened. .

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, the guide structure of the guide frame with respect to the support frame may be appropriately set, and an example in which the rotary drill and the lifting rod are driven by a hydraulic motor has been described. However, an electric motor may be used. It may be moved up and down along with the hydraulic cylinder. Furthermore, although an example in which an inclined hole is drilled has been described, it is a matter of course that in the case where a pillar attached to a tree is buried vertically, the vertical hole can be drilled by adjusting the angle of the guide frame.

[0016]

According to the present invention, there is provided a drilling machine for excavating a hole of a column attached to a planted tree, comprising a pair of left and right guide frames and a support frame connecting the guide frames. Is attached to the end of an arm of a self-propelled work machine such as a back fork, and a lifting rod that slides up and down along the guide frame is provided.A rotary drill having a drill driving device at the lower end of the lifting rod is provided. In addition to connecting and fixing the guide frame, the guide frame is vertically rotatably mounted on the support frame, and excavation drive means for raising and lowering the elevating rod along the guide frame is provided above the guide frame. Provided is a drilling machine for burying a pillar of a planted tree, which can simultaneously drill an inclined hole for inserting a pillar by aligning an axis with a direction of its excavation. Kill.

[Brief description of the drawings]

FIG. 1 is an overall side view showing one embodiment of the present invention.

FIG. 2 is a front view of the vicinity of the attachment member.

FIG. 3 is a cross-sectional view of the vicinity of the slide member.

FIG. 4 is an enlarged cross-sectional view of the vicinity of the upper part of the elevating rod.

FIG. 5 is an enlarged sectional view of the vicinity of a lower portion of the elevating rod.

FIG. 6 is a side view of the attachment member.

FIG. 7 is a perspective view showing an attached state of the two-legged torii-shape support.

FIG. 8 is a perspective view showing an attached state of the four-legged torii-shape support.

FIG. 9 is a front view showing a perforated state of a hole in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Self-propelled work machine 2 Arm 3 Mounting member 4 Guide frame 5 Support frame 15 Lifting rod 16 Hydraulic motor (drilling drive) 17 Rotary drill 18 Hydraulic motor (digging drive) B Post H

Claims (1)

(57) [Claims] 1. A drilling machine for excavating a hole in a column attached to a planted tree, comprising: a mounting member having a pair of left and right guide frames and a support frame connecting the guide frames, such as a backfour. A lifting rod that is removably attached to the tip of the arm of the traveling work machine and slides up and down along the guide frame is provided, and a rotary drill having a drilling drive device is connected and fixed to the lower end of the lifting rod, The guide frame is attached to the support frame so as to be vertically rotatable, and excavation driving means for raising and lowering the elevating rod along the guide frame is provided above the guide frame. Drilling machine.