WO2006041154A1 - 地中障害物の撤去装置及び掘削ユニット並びにこれを用いた地中障害物の撤去方法 - Google Patents
地中障害物の撤去装置及び掘削ユニット並びにこれを用いた地中障害物の撤去方法 Download PDFInfo
- Publication number
- WO2006041154A1 WO2006041154A1 PCT/JP2005/018949 JP2005018949W WO2006041154A1 WO 2006041154 A1 WO2006041154 A1 WO 2006041154A1 JP 2005018949 W JP2005018949 W JP 2005018949W WO 2006041154 A1 WO2006041154 A1 WO 2006041154A1
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- WIPO (PCT)
- Prior art keywords
- casing
- claw
- hole
- obstacle
- chuck
- Prior art date
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
Definitions
- the present invention relates to an underground obstacle removing apparatus, an excavating unit, and an underground obstacle removing method using the same. More specifically, a cylindrical casing, an excavation tooth at the lower end of the casing, a hole provided in the lower end of the casing, a chuck claw inserted into the hole and projecting inside the casing, and the chuck claw being a casing.
- a claw drive device that protrudes inward, where the outer circumference of an obstacle buried in the ground is excavated with the excavating teeth and covered with a casing, and the obstacle is grasped with the chuck claw
- the present invention relates to an underground obstacle removing apparatus and excavating unit for removing an obstacle from the ground by raising the casing in the above and a method for removing the underground obstacle using the same.
- Patent Document 1 JP 2000-154541
- the object of the present invention is to provide a highly durable underground obstacle removal device, excavation unit, and the same, under a completely different concept from the conventional pawl structure. It is to provide a method of removing underground obstacles using the
- a feature of the present invention that solves the above problems is a cylindrical casing and the casing.
- the outer circumference of the obstacle buried in the ground is excavated with the excavating teeth, the obstacle is covered with a casing, and the obstacle is submerged by pulling up the casing while holding the obstacle with the chuck claws.
- the chuck claw is curved so as to protrude inside the casing along the hole by the claw driving device, and the member forming the hole has a thickness, and the chuck claw is provided on the chuck claw.
- the casing has a lower divided body having the excavating teeth and chuck claws and an upper divided body for connection to an upper casing, and the upper and lower divided bodies are capable of relative rotation and relative expansion and contraction.
- the engagement mechanism provided between the upper and lower divided bodies engages with each other so that the relative expansion and contraction of the upper and lower divided bodies can be selected at the relative rotational position of the upper and lower divided bodies.
- the claw driving device may project the chuck claw to the inside of the casing by relative reduction of the upper and lower divided bodies.
- the engagement mechanism adjusts the protruding amount of the chuck claw by relative rotation and relative contraction of the upper and lower divided bodies, and further allows the relative reduction of the upper and lower divided bodies, and then the upper and lower divided bodies. And a first chuck portion for preventing relative extension, and the protrusion and fixing of the claw may be switched by rotation by the relative rotation! /.
- the engagement mechanism performs the reduction regulation step by step and the chuck claw protrusion amount regulation step by step.
- the claw driving device may be composed of an expansion / contraction device and a rod for driving the chuck claw by the expansion / contraction device.
- the underground obstacle is an existing pile
- the casing driving device for rotating the casing The casing drive device and the top sheave are each provided with at least a pair of pulley groups sandwiching the casing installation position, and a wire that runs between the pulley groups is installed at the casing installation position.
- a through-hole that allows passage of the casing may be provided between the pair of pulley groups by arranging the pulleys around the pulleys.
- the underground obstacle may be a pile, and the underground obstacle may be a boulder.
- Another feature of the present invention that solves the above-described problem is an excavation unit that is located at the lowermost end of the casing and is used in the underground obstacle removing device according to any one of the above, wherein the lower end of the casing An excavating tooth, a hole provided in the lower end portion of the casing, a chuck claw inserted into the hole and protruding inward of the casing, and a claw driving device for protruding the chuck claw inward of the casing.
- the outer periphery of the obstacle embedded in the excavation tooth is excavated with the excavating teeth, and the obstacle is covered with the casing, and the obstacle is removed from the ground by pulling up the casing while holding the obstacle with the chuck claws.
- the chuck claw is curved by the claw driving device so as to protrude inside the casing along the hole, and the member forming the hole has a thickness; When a downward load is applied, the casing inner portion at the lower portion of the hole and the casing outer surface side portion at the upper portion of the hole are brought into contact with the chuck claws to support the downward load. .
- Still another feature of the present invention that solves the above-described problems is a method for removing an underground obstacle using the underground obstacle removing device according to any one of the above, and has a cylindrical shape.
- the obstacle is excavated with the excavating teeth on the outer periphery of the obstacle buried in the ground and covered with the casing, and the casing is pulled up while the obstacle is grasped with the chuck claw.
- the chuck claw is bent by the claw driving device so as to protrude inside the casing along the hole to form the hole.
- the casing inner portion at the bottom of the hole during load of the downward-looking were multiplied win the chuck claws
- the upper part of the hole and the upper part of the hole are in contact with the chuck claw to support the downward load.
- FIG. 1 is an overall side view of a removal device.
- FIG. 2 is a plan view of the top sheave.
- FIG. 3 is a side view of the top sheave.
- FIG. 4 is a side view of the casing drive device.
- FIG. 5 is a side view of the excavation unit.
- FIG. 6 is a bottom view of the excavation unit.
- FIG. 7 is a side view of the claw driving mechanism.
- FIG. 8 (a) is a longitudinal sectional view of the nail device, and (b) is a rear view of the nail device.
- FIG. 9 is a view showing the operation of the claw device, where (a) is a longitudinal sectional view showing a state before the operation and (b) is a state after the operation.
- FIG. 10 shows an embodiment of a claw, where (a) is a plan view, (b) is a rear view, and (c) is a side view.
- FIG. 11 shows another embodiment of the nail, (a) is a plan view, (b) is a rear view, and (c) is a side view.
- FIG. 12 is a view showing the operation of the nail device according to another embodiment, wherein (a) is a longitudinal sectional view showing a state before the operation, (b) is a rear view of (a), and (c) is a view. It is a longitudinal cross-sectional view which shows the state after operation
- FIG. 13 is a view showing the operation of the nail device according to still another embodiment, wherein (a) shows the state before the operation.
- FIG. 2B is a longitudinal sectional view showing a state during operation
- FIG. 2C is a longitudinal sectional view showing a state after the operation.
- FIG. 14 Side view showing the relationship between the excavation unit and the pile, where (a) shows the excavation state where the normal claws are stored, (b) shows the state where the claws are protruding and the friction around the piles is being resolved, (C) is a state in which the claw is protruded and the edge of the pile tip is being cut off, and (d) is a diagram showing the pile being pulled out.
- FIG. 15 is a side view showing the relationship between the excavation unit and the pile, in which (a) shows a state of excavation with a normal nail stored, (b) shows a state in which the main bar of the pile is being cut by protruding the nail, (C) is a diagram showing a pile bow I cut-out state after cutting.
- FIG. 16 (a) is an overall side view showing a state in which the casing is rotated and added in sequence and excavation is proceeding, (b) is an overall side view showing the state of reaching the tip of the pile, and (c) is a pile with the casing. Is an overall side view showing a state in which a full length is pulled out and a pile is cut by a backhoe, and (d) is an overall side view showing a state in which a part of the pile is pulled out and a casing is removed.
- FIG. 17 (a) is an overall side view showing a state where a casing is removed and a pile is covered with a casing drive device, (b) is an overall side view showing a state in which the remaining pile is pulled out, and (c) is an illustration. It is a whole side view which shows the state which returns the backfill soil in a casing.
- FIG. 18 is an overall side view of a removal device according to another embodiment.
- FIG. 19 is a front view of an excavation unit according to another embodiment.
- FIG. 20 is a side view of an excavation unit according to another embodiment.
- FIG. 21 (a) is a bottom view of an excavation unit according to another embodiment
- FIG. 21 (b) is an AA cross-sectional view of the excavation unit according to another embodiment.
- ⁇ 22 A longitudinal sectional view of a nail device according to another embodiment.
- ⁇ 23 It is a longitudinal sectional view showing a state after operation of the nail device according to another embodiment.
- FIG. 24 One embodiment of a chuck claw according to another embodiment is shown, (a) is a plan view, (b) is a rear view, and (c) is a side view.
- FIG. 25 An embodiment of a chuck claw according to another embodiment to which a cutter is attached is shown, (a) is a plan view, (b) is a rear view, and (c) is a side view.
- FIG. 26 is a plan view in which the curved surface of the notch of the middle ring is developed into a plane.
- FIG. 27 is a diagram showing a relationship between a rod and a holder.
- FIG. 28 is a side view showing the relationship between the excavation unit and the pile according to another embodiment, in which (a) shows the excavation state in which a normal chuck claw is stored, and (b) shows the pile with the chuck claw protruding. (C) shows the state where the peripheral friction is being eliminated, (c) shows the state where the edge of the pile is trimmed by protruding the chuck claw, and (d) shows the state where the pile is pulled out.
- FIG. 29 is a side view showing the relationship between the excavation unit and the pile according to another embodiment, in which (a) shows the excavation state in which the normal chuck claw is stored, and (b) shows the pile with the chuck claw protruding. (C) is the figure which shows the state in which the main reinforcement of the cutting is cut, and the state in which the pile is pulled out after cutting.
- FIG. 30 (a) is a diagram illustrating a process of forming a groove with a chuck claw at the upper end of a pile using the removal device in another embodiment, and (b) is a pile using the removal device in another embodiment.
- FIG. 4C is a diagram for explaining a step of cutting the edge between the front end and the soil
- FIG. 5C is a diagram for explaining a step of driving a sheet pile using a neuve mouth.
- FIG. 31 is a cross-sectional view illustrating the relationship between piles, sheet piles, and the ground.
- FIG. 32 shows a sheet pile, where (a) is a sectional view in a combined state, (b) is a sectional view of a first sheet pile, and (c) is an enlarged sectional view of a connecting portion.
- FIG. 33 (a) is a perspective view of a water injection sheet pile, and (b) is a cross-sectional view taken along the line CC of (a).
- FIG. 34 A partial cross-sectional view schematically showing the relationship between the parts of the excavation unit is shown.
- (A) is a schematic representation of the second embodiment, and
- (b) is a modified function of the inner pipe and the middle pipe.
- (c) are those using a cylinder device.
- FIG. 35 is a construction plan view of a linear sheet pile.
- FIG. 36 is a cross-sectional view of each sheet pile.
- the removal device 1 includes a first crawler 2.
- the leader mast 4 is attached to the front of the crawler body 3 at an angle
- the top sheave 5 is attached to the top of the leader mast 4, and the top sheave 5 can be moved up and down by the top sheave 5 in the middle of the leader mast 4.
- a casing driving device 6 for rotating the casing 7 is attached to the casing.
- a drilling unit 8 is provided at the lower end of the casing 7 and a swivel 9 is provided at the upper end. As shown in Figs. After being connected and removed, the excavation unit 8 is driven and rotated by the casing driving device 6 to excavate the underground E.
- the top sheave 5 is a wire hung between branch frames 21 and 22 branching at the tip of the base frame 20 and a plurality of pulleys and a lower pulley 6d of the casing driving device 6. And 25.
- a pair of lower pulleys 6d in Fig. 3 is provided in the vertical direction of the figure.
- One lower pulley 6d is connected to the second vertical pulley 23b, the third vertical pulley 23c, and the fourth vertical pulley 23d on the branch frame 21.
- the lower pulley 6d is hung with the wires 25 from the fifth vertical pulley 23e and the sixth vertical pulley 23f on the branch frame 22.
- the wire 25 is the first vertical pulley 23a, the first horizontal pulley 24a, the second vertical pulley 23b, the third vertical pulley 23c, the fourth vertical pulley 23d, the second horizontal pulley 24b, 5th vertical pulley 23e, and 6th vertical pulley 23f.
- a through portion 29 through which the casing 7 passes is formed between the branch frames 21 and 22.
- a short annular retaining ring 26 is provided between the branch frames 21 and 22, and the inside becomes a through portion 29. Then, by pulling the wire 25 from the crawler main body 3, the casing driving device 6 is moved up and down via a pair of lower pulleys 6d.
- the casing driving device 6 supports and rotates the casing 7.
- the casing driving device 6 includes a fixed portion 6a that is slidably attached to the rail 4a of the leader mast 4 via a slider 6c, and a rotating portion 6b that holds and drives the casing 7 under the fixed portion 6a. ing.
- the inside of the fixed portion 6a and the rotating portion 6b is hollow and the casing 7 penetrates, and the chuck 6g provided on the rotating portion 6b can move close to the casing 7 even at a plurality of circumferential forces, and holds the casing 7.
- the driving force of the driving device 6e is transmitted to the rotating part 6b via the rotary connection 6f, and the casing 7 obtains the driving torque.
- the lower pulley 6d attached to the fixed portion 6a as described above is not shown, the same one is provided at the target position across the casing 7.
- the protective cover 7y is an angle or channel that covers the feeding tube 63 that will be located on the outer surface of the casing 7 at positions other than the rod 54 and the lower part at appropriate positions.
- the excavation unit 8 includes a small excavation blade 61 provided at an appropriate position on the bottom 60 of the casing 7 and a large excavation blade 62 provided on the outer surface of the casing 7, and further corresponds to the diameter of the casing 7.
- the claw device 40 is provided at multiple locations.
- the pressure feeding tube 63 is for injecting air, water, bentonite, etc., and is located inside the casing 7 only at the lower part of the casing 7 and is located outside the casing 7 in other parts. As shown in Fig. 5, the excavation unit 8 may be detachably attached to the casing 7 with a flange or the like!
- a claw drive mechanism 90 for driving the claw device 40 is provided in the upper part of the casing 7.
- Casing 7 is moved to the lower side of cylinder 91 supported at one end of casing 7, and casing 7 is connected to rod 54 through first joint 93 and second joint 94 that penetrate the inside and outside through through groove 7z. To do. Then, the rod 54 is moved up and down as the piston 92 moves up and down.
- the claw 41 of the claw device 40 is formed of a steel material having a curved front end portion, and a shaft 43c is penetrated through a through hole 41b at the rear end.
- the inside of the long hole 43b formed in one side of the connecting body 43 is slid.
- the first connection body 43 and the second connection body 44 are pivotally attached by a shaft 43d, and the second connection body 44 is fixed to the rod 54 via a connection plate 54b.
- a stopper 42 for preventing the claw 41 from coming off from the support hole 47a is fixed to the tip of the claw 41.
- the claw device 40 projects and returns the claw 41 as shown in FIG. 9 by moving the rod 54 up and down by the claw driving mechanism 90. In the state of FIG.
- the load F1 is received at the point of force F2. Therefore, even if a load is applied to the claw 41, almost no load is applied to the members other than the claw 41, particularly the rod 54, and the drive portion can be prevented from being damaged.
- a cutter 42x for cutting the reinforcing bar can be attached to the tip of the nail 41.
- the clearance between the lateral width W1 of the claw 41 and the lateral width W2 of the support hole 47a is the claw. It is set to an extent that does not affect the movement of 41, and the load Fr generated on the claw 41 when the casing 7 rotates due to the thickness T of the backing plate 47 is received by the contact between the side of the support hole 47a and the claw 41. It is constituted as follows. As shown in Fig. 9 (c), the rotation of the casing 7 causes the claw 41 to rotate on the lower side surface of the claw 41. Hang on the side of the claw 41 inside the casing 7 The resistance F5 of the pile 100 is applied in the anti-rotation direction of the casing.
- the claw 41 comes into contact with the receiving plate 47 and the claw 41 on the side surface on the upper side in the rotation direction, and the contact generates a reaction force F6 in the casing rotation direction. Therefore, even with respect to the rotation of the casing, the rotational resistance can be received by the principle of the lever, and almost no load is applied to the members other than the claw 41, particularly the rod 54, and the driving portion can be prevented from being damaged.
- FIG. 12 shows a modified example of the claw device 40.
- the wire 49 fixed to the shaft 43c is hung on a pulley 49a provided on the lower end side of the excavation unit 8, and the claw 41 is projected by pulling. Can do.
- the lower end 42a of the retaining portion 42 serves as a fulcrum when the claw 41 initially protrudes, and the driving force that causes the claw 41 to protrude is reduced.
- the shaft 43c may be pulled directly by another wire.
- FIG. 13 shows a modified example in which the nail 41 is turned upside down, and the nail 41 can be protruded by directly pulling the wire 49 upward.
- a load F1 is applied to the retaining portion 42 as in the above embodiment, but F2 and F3 are generated as reaction forces between the support holes 47a and the claws 41, and the point of the reaction force F2 is calculated.
- the load F1 can be received at the fulcrum.
- the casing 7 and the excavating unit 8 are driven to rotate and move up and down via the top sheave 5 and the casing driving device 6 to excavate the periphery of the pile 100.
- the contact resistance between the pile 100 and the inner surface of the casing 7 increases, the contact resistance of the circumferential surface of the pile 100 is reduced by projecting the claw 41 as shown in (b).
- the claw 41 is protruded again and the excavation unit 8 is rotated to release the tip resistance at the bottom. Then, as shown in (d), the claws 41 are projected and the pile 100 is pulled up together with the casing 7.
- a cutter 42x is provided at the tip shown in Fig. 11.
- the nail 41 is protruded and rotated at a desired position as shown in (b), and the rebar 104 located on the outer periphery of the pile 100 is cut.
- the claw 41 is further protruded, and the pile 100 is completely cut by the wedge principle, and the upper part is removed together with the casing 7.
- the casing 7 is sequentially connected to the pile 100 as shown by reference numerals 7a and 7b, and excavation is proceeded while releasing the circumferential resistance.
- the excavating unit 8 reaches the full length of the pile 100 as shown in Fig. 16 (b)
- the tip resistance is released, and the pawl 41 is protruded to hold the tip of the pile 100.
- the casing 7 protrudes to the top of the top sheave 5.
- the lower force pile 100 is sequentially cut and crushed by the class 10 and the pile 100 is disposed.
- Grout G is injected into hole H, where pile 100 has been removed, preventing collapse.
- the first crawler 2 is moved to the position of the other pile 100 with the casing 7 connected, and a through-hole 29 is provided in the top sheave 5 that should be excavated. , The labor required for disassembling casing 7 is greatly reduced.
- FIGS. 16 (d) and 17 relate to a method for disassembling the casing 7.
- FIG. 16 (b) After the configuration shown in Fig. 16 (b), the pile 100 is pulled up to an intermediate position, and as shown in Fig. 17 (a), the retainer 16 is attached to the casing 7 to prevent the casing 7 from being buried. 7d is extracted by separating 7c and 7d. Then, after the single unit 7d is knocked down by the crane 12 as shown in Fig. 17 (a), the pile 100 is cut by the crusher 11 at the position of the cutting part ⁇ while covering the pile 100 with the casing driving device 6 to prevent collapse. Remove with crane 12. If possible, the remaining portion 100b of the pile 100 as shown in FIG. 17 (b) can be removed by the crane 12 as it is.
- Removal of the tip resistance facilitates removal. If the crane 12 cannot be removed, repeat the above process. After that, the backfill 13 is put into the remaining portion 7c of the casing 7 by the backhoe 13, and the 7c is finally pulled out to complete the extraction of the pile 100.
- the crawler body 3 of the first crawler 2 The leader mast 4 is attached to the front of the head at an angle, and the top sheave 5 is attached to the top of the leader mast 4.
- a casing driving device 6 for rotating the casing 7 so as to be movable up and down by a top sheave 5 is attached to the middle portion of the leader mast 4.
- a drilling unit 8 is provided at the lower end of the casing 7. A plurality of single units are appropriately connected and removed from the casing 7, and the excavation unit 8 is driven and rotated by the casing driving device 6 to excavate the underground E.
- the casing drive device 6 supports and rotates the casing 7.
- the casing driving device 6 includes a fixed portion 6a that is slidably attached to the rail 4a of the leader mast 4 via a slider 6c, and a rotating portion 6b that holds and drives the casing 7 under the fixed portion 6a. Yes.
- the rotational driving force of the rotating part 6b is transmitted to the upper casing via the connecting flange 6e, and the casing 7 obtains the driving rotational force.
- the lower pulley 6d attached to the fixed portion 6a as described above is not shown, the same pulley is provided at the target position with the casing 7 interposed therebetween.
- a plurality of division units of the casing 7 are sequentially connected by the connecting portion 7x.
- the protective cover 7y is an angle or the like that covers the pressure feeding tube 63 that will be located on the outer surface of the casing 7 at a position other than the rod 46 and the lower part.
- the excavation unit 8 is generally configured by a claw driving device 80, a claw device 40, and a transmission mechanism 50.
- the claw driving device 80 mainly includes a connecting ring 81, an inner ring 82, a middle ring 83, and an outer ring 84.
- the connecting ring 81 is disposed between the casing 7 and the middle ring 83, connects the casing 7 and the middle ring 83 with the flange 8la, and transmits the driving force of the casing driving device 6 to the middle ring 83.
- the middle ring 83 has a notch 30 penetrating the circumferential surface.
- the upper divided body includes the connecting ring 81, the middle ring 83, and the outer ring 84
- the lower divided body includes the inner ring 82 and the lower ring 86.
- the upper part of the inner ring 82 is fitted inside the middle ring 83, and notches 83 provided at two positions of the middle ring 83, the inner ring 82 at the corresponding position on the outer peripheral surface of the inner ring 82, the substantially square pieces 85, 85 Force S is provided.
- the inner ring 82 and the middle ring 83 are relatively rotatable and telescopic, and the top 85 is moved in the notch 30 of the middle ring 83 and abuts on the circumferential phrase, so that the engagement mechanism comprising the top 85 and the notch 30
- the amount of protrusion of the inner ring 82 is restricted, and rotational force is transmitted between them.
- the outer ring 84 is disposed so as to cover the outer peripheral surface of the middle ring 83, and covers and closes the notch 30, thereby preventing the inflow of earth and sand into the notch 30 and reinforcing the notch 30 of the middle ring 83. Further, as shown in FIG. 21 (a), on the outer peripheral surface of the outer ring 84, there are two upper first holders 51 containing the spherical end 54a of the rod 54 and two upper second holders 52 having the same structure. They are placed 180 degrees apart.
- the claw device 40 is provided at a plurality of locations on the outer peripheral surface of the bottom portion 60 in accordance with the diameter of the casing 7. It is provided at the power station. As shown in FIG. 22, the claw device 40 is roughly constituted by a chuck claw 41, a presser plate 45, a receiving plate 47, and a guide plate 48.
- the chuck claw 41 is formed of a steel material having a curved tip portion, and is provided with a flange 42 for retaining at the tip, a through hole 43a at the rear end, and a groove 41a at the side surface.
- the receiving plate 47 is fixed to the side surface of the bottom 60, and the chuck claw 41 is slidably fitted into a support hole 47 a provided in the receiving plate 47.
- pins 46 and 46 are protruded inward on both sides of the support hole 47a of the receiving plate 47 and fixed with locking bolts 46a, and each pin 46 is slidably fitted into the groove 41a.
- the chuck pawl 41 smoothly moves into and out of the support hole 47a.
- a presser plate 45 is fixed below the support hole 47a, and the curved portion of the chuck claw 41 abuts the presser plate 45, thereby assisting the chuck claw 41 to move into and out of the support hole 48a.
- a shaft 43e is passed through a through hole 53b of the connecting portion 53 described later and a through hole 43 at the rear end of the chuck pawl 41. Further, the shaft 43e is slidably contacted with the cam surfaces 48a of the guide plates 48 provided on the left and right sides of the chuck pawl 41, and the lower holder 53 and the chuck pawl 41 are connected so as to be bent. Coupled with the rod guard 55, the locus of the shaft 43e is restricted along the cam surface 48a.
- the chuck pawl 41 is in contact with the upper and lower sides of the support hole 47a, and a load F1 acts downward on the tip.
- F2 from the lower side and further downward F3 act. That is, the downward force Fl, F3 acts on both sides with the point of F2 below the support hole 47a serving as a fulcrum.
- the chuck claw 41 has an advantage that it can support a great load regardless of the rod 54. Also, as shown in Figs. Since the side surface of the holding hole 47a is in contact with the chuck claw 41 with a small clearance, it can withstand a lateral load when the casing rotates and can be cut by a cutter 42x described later.
- the transmission mechanism 50 includes an upper first holder 51, an upper second holder 52, a lower holder 53, a rod 54, and a lot guard 55.
- Each of the holders 51 to 53 is provided so as to contain the spherical end portion 54a of the rod 54, and as shown in FIG. 27, the spherical end portion 54a is brought into contact with the holder base 51a having the respective depression 51c to thereby form the depression 51d. It is sandwiched between two base covers 51b that have, and the four corners are fixed with bolts 51e, so that they are detachably fixed.
- Each of the notches 30 shown in FIG. 26 has a first part 30a for pile removal and a second part 30b for pile cutting. 19 and 20, the first part 30a is used together with the upper first holder 51, and the second part 30b is used together with the upper second holder 52 to switch the holders.
- the bottom 60 is connected to the inner ring 22. Then, a small excavation blade 61 provided at an appropriate position on the bottom surface of the bottom portion 60, and a large excavation blade 62 provided with a diameter that increases smoothly and gradually along the outer peripheral surface of the bottom portion 60 until reaching the claw device ( 62a-c).
- the bottom 60 rotates together with the inner ring 22 by the driving force transmitted from the middle ring 23 to the inner ring 22, and the underground E can be excavated by the action of the small excavating blade 61 and the large excavating blade 62.
- the pressure feeding tube 63 is for injecting air, water, bentonite and the like, and extends from the upper part to the lower part along the outside of the casing 7.
- the pressure feed tube 63 is guided from the joint 63 a penetrating the flange 64 through the relay pipe 63 b to the outer surface of the outer ring 24, and penetrates the inner ring 22 from the L-shaped pipe 63 d through the flexible tube 63 c. To do.
- the fluid is supplied into the excavation unit 8.
- the relative movement between the inner ring 22 and the outer ring 24 is absorbed by the flexible tube 63c.
- FIG. 26 the basic operation of the excavation unit 8 will be described with reference to FIGS. 26, 28, and 29.
- FIG. 26 the basic operation of the excavation unit 8 will be described with reference to FIGS. 26, 28, and 29.
- Fig. 28 corresponds to the pulling work of the pile 100.
- the rod 54 in the transmission mechanism 50 is fixed to the upper first holder 51 and the frame 25 is aligned with the first part 31a.
- the frame 25 is positioned at the PI in the left-out portion 31 shown in FIG. 26, and rotates the center ring 23 toward the direction C2 with respect to the frame 25.
- the inner ring 22 and the middle ring 23 have an extended relationship.
- the casing 7 and the excavation unit 8 are driven to rotate and move up and down via the top sheave 5 and the casing driving device 6 so that the middle tube 23 and the notch 30 are connected to each other.
- Rotate relative to the machine 25 (same below) in the direction C1 bring the frame 25 into contact with the first part 31 at the position of the sign P1 ', and dig around the pile 100.
- the chuck pawl 41 does not enter the pile 100 direction as shown in FIG.
- the chuck pawl 41 is projected to reduce the contact resistance of the circumferential surface of the pile 100.
- the position of the top 25 in the excavation unit 8 naturally moves to the position P2 shown in FIG.
- the inner ring 23 slightly enters the middle ring 24 (the inner ring 23 and the middle ring 24 are relatively contracted), and the rod 54 acts to push out the chuck pawl 41, so that the chuck as shown in FIG.
- the claw 41 protrudes inward by the amount of pushing of the casing 7, and reduces the contact resistance of the 100 circumferential surface of the pile.
- the depressurization part 31 is stepped and the top 25 can freely move, and the amount of protrusion of the chuck pawl 41 is determined by the amount of pushing of the middle ring 23.
- the rotation phrase of the inner ring 23 is switched in the direction C2 in FIG. 26 to move the frame 25 upward, and the rotation is further switched in the direction of the arrow C1 to change the direction shown in FIG.
- the chuck pawl 41 is further protruded and the excavation unit 8 is rotated to release the tip resistance at the bottom of the pile 100.
- the position of the top 25 in the excavation unit 8 moves to the position P3 shown in FIG.
- the inner ring 23 enters the middle ring 24 (the inner ring 23 and the middle ring 24 contract relative to each other), and the rod 54 acts to push out the chuck pawl 41, as shown in FIG. 28 (c).
- the chuck pawl 41 further protrudes in the direction of the pile 100, and the tip resistance on the bottom surface of the pile 100 is released.
- FIGS. 29 (a) to (c) the cutting operation of the pile 100 will be described with reference to FIGS. 29 (a) to (c).
- a chuck claw 41 provided with a cutter 42x at the tip shown in FIG. 9 is used.
- the rod 54 in the transmission mechanism 50 is fixed to the upper second holder 52, and the frame 25 in the claw driving device 20 is moved to the second portion 30b of the notch 30 shown in FIG.
- the position of the frame 25 in the state of FIG. 29 (a) is the position of Q1 shown in FIG.
- the direction of rotation is the C2 direction in FIG. 10, and the chuck pawl 41 has not yet protruded in the direction of the pile 100 as shown in FIG. 29 (a).
- the chuck pawl 41 is protruded and rotated at a desired position to form the cut groove 102 and cut the reinforcing bar 104 located on the outer periphery in the pile 100.
- the position of the top 25 in the excavation unit 8 is the position of Q2 shown in FIG.
- the excavation unit 8 is connected to the casing driving device 6, and excavation is started from the surface, and the pushing of the excavation unit 8 is stopped when the surface force of the pile 100 is several meters. Position top 25 in notch 30 at Q2 of cut 33 shown in Fig. 26. And push the chuck pawl 41 (same as in Fig. 29 (b)), rotate the excavating unit 8 and insert the cut groove 102 (see Fig. 30 (c)) into the upper surface of the pile 100 with the chuck pawl 41. .
- the rod 54 is replaced from the upper second holder 52 to the upper first holder 51, and further, the chuck claw 41 is replaced with the chuck claw 41.
- the excavation unit 8 is used for excavation again, and the casing 7 is added to dig the pile 100 to the tip.
- edge cutting of the intermediate portion and the tip portion of the pile 100 and the soil is performed (the same operation as in FIGS. 28 (b) and 28 (c)).
- all the casings 7 and the excavation unit 8 are moved onto the ground G.
- the seat pearl is driven into the position where the casing 7 is present on the outer periphery of the pile 100 using the pipe mouth 14, and the pile 10 is piled up with the sheet pile as shown in Fig. 31. Enclose 0.
- the sheet pile 110 used here is composed of two types of sheet piles 111 and 112 which are combined in the same direction and force.
- FIG. 32 (a) and (b) two types of sheet piles 111 and 112 having different lateral end shapes are connected to each other, as shown in Fig. 32 (a) and (b).
- Spacer (made of steel) 114 for pile removal work is interposed in In joining the sheet nozzles 111 and 112, the convex end 111a and the concave end 112a are overlapped at the connecting portion 115 as shown in FIG. 32 (c).
- FIG. 33 shows sheet piles 111 and 112 for liquid injection.
- Several tubes 121 (121a-; 0 are fixed on the sheet pile with a fixing tool 123, and the position of the tube tip 121x can be shifted, so that water can be injected at different positions. Place several pipe piles with this pipe every few times in the construction of a).
- the previous excavation unit 8 is positioned above the force pile 100 (not shown). Then, the chuck pawl 41 is hooked in the groove, and the pile 100 is also pulled out by using the first crawler 2. Pull out the pile 100, bury earth and sand in the hole H, bury the earth and sand, and then pull out the sheet pile bow I It will be. When the pile 100 is pulled out, there is a sheet pile at the periphery of the pile 100, so that the soil around the periphery of the pile 100 does not collapse, and ground subsidence after construction can be prevented.
- FIG. 34 is a partial cross-sectional view schematically showing the relationship between the claw driving device 20, the notch 30, the claw device 40, and the transmission device 50.
- (a) is a schematic representation of the right side of FIG. 2 of the first embodiment.
- Fig. 34 (b) the roles of the inner ring 22 and the middle ring 23 are interchanged with those in Fig. 34 (a), and the first inner ring 22 'has a notch 30 and the middle ring 23' has a frame 25. Good.
- a cylinder device 70 can be used instead of the claw driving device 20, the notch 30, and the transmission device 50. This is realized by connecting the upper rod 71a to the second inner ring 22 ', connecting the chuck pawl 41 to the lower rod 71b, and providing the cylinder 71 between the upper rod 71a and the lower rod 71b. .
- FIGS. 35 and 36 show a state where a sheet pile is placed in a rectangular area.
- Two types of sheet piles 111 and 112 are alternately provided, and another sheet pile 113 is used in the corner portion.
- the left and right connecting portions 11la and 112a have a target shape as shown in FIG. 36, but in FIG. 36C, the connecting portion 113a has different left and right shapes in (c).
- the occupied line is expanded from B4 to B3, and it is possible to reduce useless boundary space.
- the brace ring 26 is fixed.
- the brace ring 26 may be configured so that, for example, the front can be opened and closed.
- the present invention can be used as an apparatus and method for extracting and cutting piles. Further, the structure of the claw device is not limited to the extraction of piles but can be applied to holding other heavy objects. Furthermore, the present invention can be used as a removal device and removal method for underground obstacles such as piles and rolling stones.
Abstract
Description
Claims
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JP2006540980A JP4653110B2 (ja) | 2004-10-15 | 2005-10-14 | 地中障害物の撤去装置及び掘削ユニット並びにこれを用いた地中障害物の撤去方法 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2940661A1 (fr) * | 2008-12-30 | 2010-07-02 | Cie Du Sol | Machine d'excavation ayant un kelly muni de cavites debouchant sur deux faces |
EP2204500B1 (fr) * | 2008-12-30 | 2016-08-24 | Soletanche Freyssinet | Machine d'excavation à kelly pivotable |
JP2018096030A (ja) * | 2016-12-08 | 2018-06-21 | 株式会社青島工業 | 建設装置のトップシーブ |
CN108425361A (zh) * | 2018-05-09 | 2018-08-21 | 上海建工四建集团有限公司 | 拔桩装置及其应用方法 |
EP3320173A4 (en) * | 2015-07-07 | 2019-08-14 | Mimouni, Nabil | STAKE DISPOSAL SYSTEM |
JP2021139254A (ja) * | 2020-02-28 | 2021-09-16 | 有限会社マンダイクレーン | 既設杭切断除去装置 |
JP7281845B1 (ja) | 2022-05-27 | 2023-05-26 | 太洋基礎工業株式会社 | 既存杭の切断装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4545774B2 (ja) * | 2007-04-23 | 2010-09-15 | 日特建設株式会社 | 地下埋設体の切断方法と引上げ方法 |
Citations (1)
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JP2000154541A (ja) * | 1998-11-20 | 2000-06-06 | Okadagumi:Kk | 既設杭の引抜き装置 |
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- 2005-10-14 WO PCT/JP2005/018949 patent/WO2006041154A1/ja active Application Filing
Patent Citations (1)
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JP2000154541A (ja) * | 1998-11-20 | 2000-06-06 | Okadagumi:Kk | 既設杭の引抜き装置 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2940661A1 (fr) * | 2008-12-30 | 2010-07-02 | Cie Du Sol | Machine d'excavation ayant un kelly muni de cavites debouchant sur deux faces |
EP2204499A1 (fr) * | 2008-12-30 | 2010-07-07 | Soletanche Freyssinet | Machine d'excavation ayant un kelly muni de cavités débouchant sur deux faces |
EP2204500B1 (fr) * | 2008-12-30 | 2016-08-24 | Soletanche Freyssinet | Machine d'excavation à kelly pivotable |
EP3320173A4 (en) * | 2015-07-07 | 2019-08-14 | Mimouni, Nabil | STAKE DISPOSAL SYSTEM |
US10415208B2 (en) | 2015-07-07 | 2019-09-17 | Nabil Mimouni Organization | Pile removal system |
US10982405B2 (en) | 2015-07-07 | 2021-04-20 | Nabil Mimouni | Pile removal system |
JP2018096030A (ja) * | 2016-12-08 | 2018-06-21 | 株式会社青島工業 | 建設装置のトップシーブ |
CN108425361A (zh) * | 2018-05-09 | 2018-08-21 | 上海建工四建集团有限公司 | 拔桩装置及其应用方法 |
CN108425361B (zh) * | 2018-05-09 | 2023-09-22 | 上海建工四建集团有限公司 | 拔桩装置及其应用方法 |
JP2021139254A (ja) * | 2020-02-28 | 2021-09-16 | 有限会社マンダイクレーン | 既設杭切断除去装置 |
JP7281845B1 (ja) | 2022-05-27 | 2023-05-26 | 太洋基礎工業株式会社 | 既存杭の切断装置 |
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JP4653110B2 (ja) | 2011-03-16 |
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