JPH0554637U - Multiple Auger Drilling Rig - Google Patents

Abstract

(57) [Summary] [Object] To obtain a multiple auger excavator capable of excavating a continuous column row hole and excavating a flat hole by shaving the projectile soil formed by the intersecting cylindrical hole surfaces. [Structure] On both surfaces of the foot limb connecting portion 9 of the foot shackle A provided at the lower part of the central auger 6 and both side augers 6a, the projecting soil 11 remaining between the cylindrical holes of the continuous column row holes C is formed. A cutter part B for scraping is pivotally attached along the bottom surface 11a, and the cutter part and the central auger 6 are connected via a shaking motion cam mechanism for converting the rotation of the central auger into a swing motion. Multiple auger excavator in which the blade edge of the blade makes a reciprocal angular motion over substantially the entire width of the bottom surface 11a of the ridge soil 11.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a multiple auger drilling device capable of forming a continuous column row hole for drilling in the ground into a flat hole by a plurality of earth augers.

[0002]

[Prior Art]

 Conventionally, a continuous column row hole was drilled with a multiple auger drilling machine, cement milk was injected into this continuous column row hole, and H-shaped steel was built in to construct a continuous soil retaining wall. As shown in FIG. 7, the cement milk was injected while leaving the corrugated ridge soil 11 formed between the cylindrical holes 10 of the continuous columnar hole D.

[0003]

[Problems to be solved by the device]

 In the conventional example, when the H-section steel cannot be brought close to the bottom surface 11a of the projecting soil 11, and there is the adjacent land boundary line L in contact with the continuous retaining wall, the area of the site of the project is the thickness of the projecting soil 11. Could not be used effectively.

[0004]

[Means for Solving the Problems]

 According to the present invention, the ridge soil 11 remaining between the columnar holes of the continuous columnar row D is formed on both sides of the shackle tube connecting portion 9 of the shackles A provided at the lower part of the central auger 6 and both side augers 6a. The cutter part for scraping along the bottom surface 11a of the soil is pivotally attached, and the cutter part and the central auger 6 are connected via a shaking motion cam mechanism that converts the rotation of the central auger into swing, This is a multiple auger excavator in which a reciprocating angular motion is given to the cutter so that the cutting edge of the section extends over substantially the entire width of the bottom surface 11a of the ridge soil 11.

[0005]

[Action]

 When the three augers 6a, 6, 6a are rotated and lowered, a continuous column row hole D is excavated as shown in FIG. Normally, the continuous columnar hole D is formed by intersecting the cylindrical holes 10 formed by the respective augers, so that four projecting soils 11 formed by the intersecting cylindrical surfaces are left uncut between the cylindrical holes 10; Accordingly, the ridge soil 11 is scraped down to the bottom surface 11a by the cutter portion B (B1) which makes a reciprocal angular motion, and the flat hole D1 is formed as shown in FIG. Therefore, as shown by the solid line, the flat hole D1 is placed by one cylindrical hole for excavation, and then the flat hole D2 is excavated as shown by the dotted line. By repeating such excavation, a long flat hole can be formed, and the H-section steel 10a can be built close to the hole wall surface.

[0006]

【Example】

 Example 1 will be described with reference to FIGS. 1 to 4. Fig. 4 shows a multiple (three) auger excavator, which is mounted at the tip of a boom 2 extending from a rotating machine base 1 on a self-propelled vehicle along a leader mast 3 rotatably supported on its own axis. Guided by the fixed parallel guide bar 4, the main rope 5a raises and lowers the auger machine 5, and the three augers 6a, 6 and 6a (multiple augers) form three consecutive columnar holes D in the ground. Excavate. Reference numeral 5b is a vibration damping device that holds the augers 6 and 6a so as to move up and down along the guide rod 4. Reference numeral 8 denotes an interfering device which serves as a foot shackle A of the augers 6 and 6a. As shown in detail in FIG. A device for holding and maintaining a mutual distance between them to rotate the cutting edges of the excavating blades 7 in an interfering manner, and the existence of this device allows the cylindrical holes 10 to intersect with each other to excavate the continuous columnar hole D.

In FIG. 1, B is a cutter portion provided on both sides of the foot limb tube connecting portion 9 of the foot shackle A, and when the reciprocating angular motion is made, the ridge soil 11 remaining between the cylinder holes 10 of the continuous pillar row holes D is formed. The projecting strips are scraped along the bottom surface 11a of the soil, and the horizontal shafts 9a projecting from both sides of the straddle cylinder connecting portion 9 are orthogonal to a common plane passing through the center lines of the augers 6a, 6, 6a. The rod-shaped main body 13 of the cutter portion is pivotally attached by. Then, the upper extension portions 13a of the rod-shaped main body 13 facing each other on the front and back of the foot strut connecting portion 9 are connected to each other above the foot strut connecting portion 9 and at the equidistant position from the horizontal axis 9a. The connecting rods C are connected to each other by connecting the connecting rods C to the connecting horizontal shaft 9b so as to connect the adjacent cutter parts B, B to each other, and the foot tie A, the two rod-shaped main bodies 13 and 13, and the connecting rod C. To form a uniform quadruple link.

E is a blunt triangular cam that is almost circular and is provided on the outer periphery of the central auger 6 on the foot tie A as shown in FIG. 2. All diameters M passing through the rotation center O have the same length. It has become. A cam mechanism is composed of the same cam and a connecting horizontal shaft (9b) that is driven by the same cam. A swing motion cam mechanism that converts the rotation of the central auger into swing is constructed. As shown in FIG. 3, the cutter section B has outwardly facing cutting blades 14 and 15 for scraping off the bottom portion 11a of the projecting soil 11 in order from the lower end, and a horizontal blade 16 above it. This blade may be composed of only a single double-edged triangular blade.

In the first embodiment, when the augers 6 and 6a rotate to start excavation, the cam E of the rotating central auger 6 pushes the right connecting horizontal shaft 9b to the right. At this time, the equal leg quadruple links (A, 13, 13, C) move to the right, and the four left and right cutter parts B rotate about the horizontal axis 9a from the right to the left by a certain angle, and As shown in Fig. 5, the projecting soil 11 is scraped off from the right side to the left side by the cutting blades 14 and 15 of the cutter portion B in the shape of the concave groove 11b. Since D is excavated and descended, the concave groove 11b is scraped down diagonally to the left. Then, when the cam E of the central auger 6 further rotates and pushes the left connecting horizontal shaft 9b to the left, the equal leg quadruple link (A, 13, 13, C) moves to the left, and the left and right four links. The cutter part B of FIG. 3 rotates from the left to the right about the horizontal axis 9a, and the cutting blades 14 and 15 scrape the ridge soil 11 into a concave groove 11b obliquely descending to the right. By repeating this reciprocating angular motion, the strip soil 11 is scraped in a zigzag shape, and the uncut portion 11c is scraped off by the descending horizontal blade 16 to form the continuous columnar hole D into a flat hole.

As a modification of the first embodiment, the upper end of the rod-shaped main body 13 of the cutter portion B is pivotally attached to the horizontal shaft 9a, and an equipod quadruple link is provided below the foot-clad tube connecting portion 9 and below the foot shackle A. In the above, a cam similar to the cam E is projected on the outer periphery of the central auger 6, and the swing mechanism cam mechanism for converting the rotation of the central auger into swing is constituted by the cam mechanism and the equal leg quadruple link. You may.

The second embodiment will be described in detail with reference to FIG. F is a follower pivotally attached to the middle of each of the horizontal shafts 9a projecting from both sides of the foot grab connecting portion 9 of the foot grab A in a state orthogonal to the common plane passing through the center lines of the three augers 6, 6a, 6a. The inner ends of the driven rods, which are adjacent to each other on the front and back of the augers 6 and 6a, are coupled with a pin 9c, and a roller F1 is pivotally attached to the inner end of the pin 9c. A cutter portion B1 for scraping the ridge soil 11 along the bottom surface 11a of the ridge soil when making a reciprocating angular motion is fixed to the free end (outer end) of each driven rod F. E1 is a cam in which a part of the lower end surface of the cylindrical body fixed to the outer periphery of the central auger 6 is recessed into a blunt triangular mountain, and the roller F1 of the driven rod F makes elastic contact with the cam to form a cam mechanism. Reference numeral 17 denotes a torsion spring wound around a horizontal shaft 9a and hooked at its ends with a driven rod F and a bearing cylinder 18 to urge the inner end of the driven rod F upward to elastically contact the roller F1 with the cam E1. . The cam (E1) of the central auger 6 and the driven rod (F) form an oscillating motion cam mechanism that converts the rotation of the central auger into oscillating motion. A reciprocating angular motion is performed over substantially the entire width of the bottom surface 11a of 11. The cutter portion B1 is a sickle-shaped blade with a double-edged tip. Reference numeral 16 is a protective plate that prevents the excavation object from colliding strongly with the cam portion.

In the second embodiment, when the roller F 1 is disengaged from the cam E 1 of the rotating central auger 6 during excavation, the inner end of the driven rod F is pushed down around the horizontal shaft 9 a, and the slave rod F 1 is driven. The four left and right cutter parts B1 at the outer end of the moving rod F open outward as shown by phantom lines. When the roller F1 begins to enter the cam E1 while the augers 6 and 6a are excavating and descending, the inner end of the driven rod F gradually rises, and the cutter portion B1 rotates inward so as to embrace the ridge. Although the soil 11 is scraped off, when the roller F1 begins to escape from the cam E1, the cutter portion B 1 scrapes the ridged soil 11 and opens outward again. By repeating this operation, the four strips of soil 11 are scraped and the continuous columnar holes D become flat holes.

[0013] Below the interfering device 8, a leg shackle may be separately provided below the augers 6 and 6a, and a reciprocating angular motion may be given to the cutter portion by the same mechanism as in the first and second embodiments.

[0014]

[Effect of the device]

 According to the present invention, the ridge soil 11 remaining between the columnar holes of the continuous columnar row D is formed on both sides of the shackle tube connecting portion 9 of the shackles A provided at the lower part of the central auger 6 and both side augers 6a. The cutter part for scraping along the bottom surface 11a of the soil is pivotally attached, and the cutter part and the central auger 6 are connected via a shaking motion cam mechanism that converts the rotation of the central auger into swing, Since the reciprocal angular motion is given to the cutter part so that the blade edge of the part extends over substantially the entire width of the bottom surface 11a of the projecting soil 11, when the three augers 6a, 6, 6a are rotated and lowered, The continuous pillar row hole D is excavated, and the four projecting soils 11 left uncut between the cylindrical holes 10 are scraped to the bottom surface 11a by the cutter part B (B1) that makes a reciprocating angular motion, and the flat hole is formed. Is formed. Therefore, if this flat hole excavation is continued, a flat wall-shaped hole will be formed. When cement milk is injected into this hole and H-shaped steel is built in a state of approaching the flat wall surface, the H-shaped steel will be added to the adjacent land boundary line L. The underground can be effectively utilized by constructing a continuous underground wall.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a first embodiment.

FIG. 2 is a plan view of a cam portion taken along the line X-X in FIG.

FIG. 3 is a side view of a cutter section B taken along the line YY of FIG.

FIG. 4 is a side view of a multiple auger drilling device provided with the device of the first embodiment.

5 is a plan view of ridge soil scraped by Example 1. FIG.

FIG. 6 is a perspective view of a main part of the second embodiment.

FIG. 7 is a plan view of a continuous column row hole excavated by a conventional device.

FIG. 8 is a plan view of a flat hole excavated by the device of the present invention.

[Explanation of symbols]

 A Foot grabs B Cutter part B1 Cutter part C Connecting rod D Continuous column row hole D1 Flat hole D2 Flat hole E Cam E1 Cam F Follower rod F1 Roller 6 Central auger 6a Both sides auger 8 Interfering device 8a Foot grab tube 9 Foot part 9 Horizontal axis 9b Connection horizontal axis 9c Pin 11 Ridge soil 11a Bottom 17 Torsion spring

Claims (3)

[Scope of utility model registration request] 1. A central auger (6) and bilateral augers (6a)
On the both sides of the foot limb connecting portion (9) of the foot limb (A) provided at the bottom of the ridge (1)
The cutter part (B, B1) for scraping 1) is scraped along the bottom surface (11a) of the projecting soil, and the cutter part and the central auger (6) are swung by the rotation of the central auger. It is connected via a swinging motion cam mechanism for conversion, and a reciprocating angular motion is given to the cutter part so that the blade edge of the cutter part covers substantially the entire width of the bottom surface (11a) of the projecting soil (11). Continuous auger drilling equipment 2. The foot limb connecting portion (9) in a state orthogonal to a common plane passing through the center lines of the triple augers (6, 6a, 6a).
The rod-shaped body (13) of the cutter portion (B) is pivotally attached to the horizontal shaft (9a) projecting on both surfaces of the rod-shaped body (9), and the rod-shaped body (9) faces the front and back of the straddle tube connecting portion (9) and faces each other. 13) The upper extension portions (13a) are connected to each other above the straddle tube connecting portion (9) and at a position equidistant from the horizontal axis (9a).
And the connecting rod C is pivotally attached to the connecting horizontal shaft (9b) to connect the adjacent cutter portions (B, B) to each other, thereby connecting the foot ties (A) and the two rod-shaped main bodies (13). , 1
3) and a connecting rod (C) to form an equal-leg quadruple link, and a blunt triangular mountain cam with the same diameter passing through the center of rotation on the outer periphery of the central auger (6) above the foot tie (A). (E) is projected, and a cam mechanism is constituted by the same horizontal shaft (9b) that is driven by the same cam and the same cam, and the rotation of the central auger is converted into swing by the cam mechanism and the equal leg quadruple link. The multiple auger digging device according to claim 1, wherein the oscillating motion cam mechanism is configured. 3. A driven rod (F) at both ends of a horizontal shaft 9a projecting from both sides of the foot-barrel connecting portion 9 in a state orthogonal to a common plane passing through the center lines of the triple augers (6, 6a, 6a). Of the foot shackle (A), the inner ends of the adjacent driven rods adjacent to each other on the front and back of the foot shackle (A) are connected to each other by a pin (9c), and a roller (F1) is pivotally attached to the inner end of the pin. A cutter (B1) is fixed to the free end (outer end) of the rod F, and a cam (E1) in which a part of the lower end surface of the cylinder fixed to the outer periphery of the central auger (6) is recessed into a blunt triangular mountain , A swinging cam mechanism for converting the rotation of the central auger configured by the roller (F1) of the driven rod (F) elastically contacting with the cam Multiple auger drilling rig according to claim 1