JP2005068729A - Hole digging and pile driving attachment, and hole digging and pile driving machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To vertically erect a leader at the tip of an obstacle and secure a sufficient erection length of a pile, by sinking a boom of a working machine and the leader thereof under the obstacle, even if the obstacle exists in the air, when operations for erecting the pile for a foundation and the like are performed by a hole digging and pile driving machine. <P>SOLUTION: In this hole digging and pile driving machine (B), a hole digging and pile driving attachment (A) is attached to the tip of an arm (3) of an excavator (S) such as a hydraulic excavator. The attachment (A) has the leader (1). The leader (1) has a leader base body (10). The base body (10) is provided with a telescopic body (11) for changing the height or length of the leader (1). The telescopic body (11) is expanded/contracted by a hydraulic cylinder. The telescopic body (11) is provided with a motor (2) which is fitted with a hole digging implement (5) or the pile (6) so as to rotate it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drilling pile driving attachment and a drilling pile driving machine. More specifically, even if there are obstacles in the air, such as electric wires, signboards, or house eaves, it is relatively easy and safe to dig a hole without touching the obstacles while ensuring sufficient pile erection length. It is related with the thing which can perform rigging work and pile driving work.

Most buildings, such as ordinary houses, large signboards, and traffic lights, require a foundation to provide durability. When constructing the foundation, especially when the ground is soft, piles are built at the bottom of the foundation to prevent the settlement of the foundation and ensure strength. Note that the term “build” includes various meanings such as driving, inserting, screwing, sinking, pressing, and burying piles.
2. Description of the Related Art Conventionally, a digging pile driving machine capable of performing this pile driving work and the accompanying hole digging work with a single unit has been used. The digging pile driving machine can stand a leader vertically on a construction site and send a screw auger into the ground along the leader for drilling (see Patent Document 1).
JP-A-5-132936

However, the digging pile driver (earth auger pile driver) described in Patent Document 1 has the following problems.
The length of the pile piled up varies depending on the conditions of the construction site. Therefore, the length of the leader is set in accordance with the expected longest pile length. For this reason, even when a pile having a length of 3 m is built, for example, a drilling pile driving machine equipped with a leader for 6 m is often used.

Refer to FIG.
For example, when foundation pile driving work is performed where there is an overhead line C such as an electric wire, it is necessary to set the leader 93 vertically so that the boom or arm 92 of the work machine 91 and the leader 93 cross the overhead line C.
Where there are not many overhead lines C, the point P can be set by operating the boom or arm 92 and dropping the leader from above 93 over the overhead line C.

However, for example, if there are many overhead lines C and the intervals between them are narrow, there is a high risk that the boom or arm 92 or the reader 93 will touch or cut the overhead line C, which makes the operation extremely difficult.
In this case, even if the boom or arm 92 and the reader 93 are hidden under the overhead line C to set the leader 93 vertically, when the long leader 93 is to be set up vertically, the boom or arm 92 is not connected to the overhead line. Since C contacts from below, this method is still difficult to work.

(Object of the present invention)
The object of the present invention is, for example, when an obstacle is in the air when building a pile for a foundation, the boom and leader of the work machine are hidden under the obstacle and the leader is placed at the tip of the obstacle. An object of the present invention is to provide an attachment for drilling pile driving and a drilling pile driving machine capable of standing upright and ensuring a sufficient built-in pile length.

The means of the present invention taken in order to solve the above problems are as follows.
In the first invention,
A drilling pile driving attachment that is used by attaching to the boom or arm of a work machine,
The attachment comprises a reader;
The reader has a leader base attached to a boom or an arm of a work machine, a telescopic body provided on the leader base to change the height or length of the leader, and a means for stretching the telescopic body,
The stretchable body is provided with a motor for rotating a drilling tool or a pile,
It is an attachment for digging piles.

In the second invention,
Characterized by comprising means for lifting a drilling tool or pile,
It is an attachment for digging pile driving concerning the 1st invention.

In the third invention,
The lower part of the reader base is extendable,
It is an attachment for digging pile driving concerning the 1st or 2nd invention.

In the fourth invention,
A grounding member for grounding to the ground is provided at the bottom of the reader base, and the grounding member is configured so that the angle changes according to the inclination of the ground.
It is an attachment for digging pile driving concerning the 1st, 2nd, or 3rd invention.

In the fifth invention,
It has a connecting part for providing an interval fixing member between the lower part of the leader base and the work machine,
It is an attachment for digging pile driving concerning the 1st, 2nd, 3rd, or 4th invention.

In the sixth invention,
A reader is provided, the reader being attached to the boom or arm of the work machine, a telescopic body that is provided on the leader base and changes the height or length of the reader, and means for extending and contracting the telescopic body And the telescopic body is provided with a motor for rotating the drilling tool or the pile,
It is a digging pile driver.

  The telescopic structure at the top of the reader is a so-called telescopic type (movable type), but other telescopic structures may be adopted. In addition, the number of steps of the nested structure is not particularly limited, and two or three steps are used for pile driving of relatively short piles. Four or more stages may be adopted.

The digging pile driving attachment is used by being attached to the boom or arm tip of a working machine (for example, a general-purpose machine such as a hydraulic excavator excavator).
Further, the digging pile driving machine includes both a type in which an attachment for digging pile driving is attached to the working machine and a dedicated machine type for performing the drilling work and the pile driving work.

(Function)
The drilling pile driving attachment according to the present invention operates as follows.
First, the digging pile driving attachment is attached to the boom or arm tip of a work machine (such as a hydraulic excavator excavator).
Operate the boom or arm of the work implement to place the attachment on the construction site and make the leader vertical.

The procedure for drilling work (also called earth auger work) and pile building work is as follows.
(1) A telescopic drilling tool (spiral auger, etc.) is attached to the rotating shaft of a motor (hydraulic motor, etc.) provided on the leader's telescopic body. The digger is suspended and parallel to the vertical leader.
(2) Remove the locking pin of the drilling tool, etc. to make the drilling tool slidable and extendable, and drop the tip part side on the ground. Then, the telescopic body at the upper part of the leader is extended (raised) to raise the drilling tool base, and the drilling tool is extended. When the drilling tool reaches a predetermined length, the slide locks and the length is fixed.
(3) The motor is driven and the upper part of the leader is reduced while rotating the rotating shaft, and the drilling tool is lowered while rotating, and the hole is drilled in the ground by the spiral of the drilling tool.

(4) Extend the telescopic body at the top of the reader to raise the drilling tool (there may simultaneously rotate the drilling tool in the reverse direction) and remove it from the drilled hole. The extending hole drilling tool is usually contracted by the reverse operation to the above, and the length is fixed with a locking pin at a short length.
(5) Remove the drilling tool from the rotating shaft of the motor, and attach a pile (spiral pile, etc.) of the required length to the rotating shaft instead. The attaching and removing operations of the drilling tool and the spiral pile are performed using a lifting means such as a winch provided for the attachment and suspended by a wire or the like, but may be performed by other means.
(6) Shrink the leader's telescopic body and lower the pile. The motor is driven and the pile is further lowered while rotating, and a hole provided in the ground is built as a guide. When the leader's telescopic body is reduced, the upper part of the pile is still partially protruding from the ground (about the length when the drilling tool is reduced).

(7) Remove the rotating shaft of the motor from the upper part of the pile, and extend and raise the extension body of the leader. And a spacer pile is joined so that it may not rotate in the axial direction between the upper part of a pile and the rotating shaft of a motor.
(8) The motor is driven, the leader's telescopic body is reduced while rotating the pile and the spacer pile, and the pile and the spacer pile are further lowered and built on the ground. When the upper end of the pile (base end) descends to the position where it protrudes the required length from the ground (it is a part connected to the foundation, the height is appropriately determined), the drive of the motor is stopped, and the spacer pile Removed from the pile. In addition, although the spacer pile will be joined one after another if the built-in length of the pile is long, it will be buried in the ground, but the uppermost spacer pile is finally removed.

When using a drilling pile driver with the above structure, for example, to stop the work machine on the road side and build a pile for housing foundation on the other side of the overhead wire such as electric wires, attach the attachment as follows: Install (set).
First, the attachment is slanted so as to be hugged under the boom or arm, and the work machine is run or the boom or arm is operated so that the attachment is submerged under the overhead line.
When the attachment exceeds the position of the overhead wire, the boom or arm of the work machine is operated to place the attachment on the construction site (construction location) and make the leader vertical.

By making the upper side extendable so that the height of the leader can be changed, the length of the leader (when reduced) can be set short while securing the built-in length of the pile as before. As a result, the height of the leader when standing is reduced before extension, so that the height of the boom or arm attachment portion of the work implement can also be set low.
Therefore, even if the boom or arm and the leader are submerged under the obstacle, the leader can be stood vertically without the boom or arm coming into contact with the obstacle from below when standing upright.
In this way, the attachment can be placed on the other side of the overhead line with the reader standing vertically.

  For those equipped with means for lifting the drilling tool or pile, remove the drilling tool or spiral pile, which is a relatively heavy object, when attaching or removing the drilling tool or spiral pile to the motor. Since the work can be lifted, the work can be performed safely and easily.

  Also, if the lower part of the leader base is extendable, when setting the attachment to the construction site, set the leader vertically with the lower end of the leader floating above the ground, and extend the lower part of the leader to extend the lower end. Try to contact the ground. According to this, the operation of the boom or arm can be performed more easily and quickly than the simultaneous adjustment of the grounding of the lower end of the leader to the ground and the verticality.

  A grounding member that contacts the ground is provided at the bottom of the reader base, and the grounding member is configured to change its angle according to the inclination of the ground. Can be set. In addition, unlike a conventional leader, which is inserted into the ground like a conventional leader, the grounding member does not create a useless hole in the ground and does not rough the ground. Therefore, it does not require time for leveling and the like, and is excellent in terms of safety.

Further, in the case of having a connecting portion for providing an interval fixing member between the work base and the lower part of the leader base, the attachment is attached to the boom tip of the operating device, and the interval fixing member is further provided between the boom base and the connecting portion. It is possible to perform drilling and pile driving work by forming a triangle shape with the boom, attachment, and interval fixing member.
By making this triangular shape, the attachment can be supported more firmly without causing blurring or backlash of the joint as in the case where the attachment is simply attached to the tip of the arm. Therefore, when a thicker and stronger pile is built, or when a pile is built on a relatively proof ground, the work can be reliably performed.

(A) The drilling pile driving attachment and the drilling pile driving machine according to the present invention can extend and shorten the built-in length of the pile by making the upper side extendable so that the height or length of the leader can be changed. The reader length (when reduced) can be set short while securing the street.
Thereby, since the height of the leader when it stands is low, the height of the boom or arm attachment portion of the work implement can be set low. Therefore, even if the boom or arm and the reader are submerged under the obstacle, the leader can be vertically set without the boom or arm coming into contact with the obstacle from below when standing upright.
Therefore, when there are many obstacles such as overhead wires in the air, the leader part of the digging pile driver can be installed in places where it was not possible to set the obstacles from above. It is possible to install safely and quickly.

(B) A drilling tool or a pile provided with means for lifting a pile is a relatively heavy object when the drilling tool or pile is attached to or detached from the motor. Since the work can be lifted, the work can be performed safely and easily.

(C) When the lower part of the reader base is extendable, when the attachment is set as a construction site, the reader is set vertically with the lower end of the leader floating from the ground, and the lower part of the leader is extended to extend the lower end. To ground. According to this, the operation of the boom or arm can be performed more easily and quickly than the simultaneous adjustment of the grounding of the lower end of the leader to the ground and the verticality.

(D) A grounding member that is grounded to the ground is provided below the reader base, and the grounding member is configured so that the angle changes according to the inclination of the ground. Can be placed on the ground. In addition, unlike a conventional leader, which is inserted into the ground like a conventional leader, the grounding member does not create a useless hole in the ground and does not rough the ground. Therefore, it does not take time for leveling and the like, and there is no worry that the operator will get a foot.

(E) In the case of having a connecting portion for providing a spacing fixing member between the work base and the lower part of the leader base, the attachment is attached to the boom tip of the working equipment, and the spacing fixing member is further provided between the boom base and the connecting portion. Can be drilled and piled up by making a triangle with a boom, attachment, and interval fixing member.
By making this triangular shape, the attachment can be supported more firmly without causing blurring or backlash of the joint as in the case where the attachment is simply attached to the tip of the arm. Therefore, when a thicker and stronger pile is built, or when a pile is built on a relatively proof ground, the work can be reliably performed.

  The invention will be explained in more detail on the basis of an embodiment shown in the drawing.

FIG. 1 is an explanatory view showing an embodiment of an attachment for drilling piles according to the present invention,
FIG. 2 is an explanatory view showing a state where the leader upper portion of the drilling pile driving attachment shown in FIG. 1 is extended.
The digging pile driving attachment A (hereinafter simply referred to as attachment A) is used by being attached to the boom or arm tip of a work machine.
In the following description, when describing the position and direction, the right side in FIGS. 1 and 2 is the front side, the left side is the rear side, the front side (paper side) in the depth direction is the right side, and the back side (paper back side). ) May be expressed as the left side.

The attachment A includes a reader 1 that can be expanded and contracted.
The reader 1 includes a rectangular tubular reader base 10 and a rectangular tubular expandable body 11. The expandable body 11 has a lower portion serving as a slidable insertion portion 111 fitted in the reader base 10 and an upper portion serving as a head portion 112 having the same body diameter as the leader base 10.
Note that the contact surfaces of the upper end portion of the reader base body 10 and the lower end portion of the head portion 112 are inclined at the same angle. It is brought to the side so that no play occurs.

  A grounding member 12 is provided at the lower end portion of the reader base 10 constituting the reader 1. The grounding member 12 has a grounding plate 121 having a flat bottom surface at the bottom, and is attached so as to be swingable (turnable) by a shaft 122. In this embodiment, the grounding member 12 swings in only one direction. However, the present invention is not limited to this. For example, a sphere is used at the swing center, and this is fitted into the receiving part space. A structure that can swing in the direction can also be used.

  On the outer surface on the rear side of the leader base 10, a connection bracket 13 is provided as a connection part for providing the interval fixing member 7 with the work machine slightly above the lower end. The connection bracket 13 is composed of two plates (reference numerals omitted) arranged in parallel on the left and right sides at a required interval, and each plate is provided with a connection hole 131. The operation of the connecting bracket 13 will be described later.

  An attachment bracket 14 for attaching the arm tip of the working machine is provided on the outer surface of the rear side of the reader base 10 slightly below the upper end. The mounting bracket 14 is composed of two plates (reference numerals omitted) arranged in parallel on the left and right sides at a required interval, and mounting holes 141 and 142 are provided in each plate. The lower mounting hole 141 is a hole in which the arm tip is pivotally attached via a pin or the like. The attachment hole 142 on the upper side is a hole in which the link tip is pivotally attached via a pin or the like.

  A wire attachment piece 15 is provided slightly above the attachment bracket 14 in the reader base 10. In addition, an electric winch 16 is provided at a substantially intermediate portion between the connecting bracket 13 and the mounting bracket 14 in the reader base 10. Further, a pile guide 17 is provided on the outer surface of the front side of the leader base 10 slightly above the lower end. The pile guide 17 has a guide hole 171 through which the spiral pile 6 is inserted.

The insertion portion 111 of the expansion / contraction body 11 constituting the reader 1 is set to a length slightly shorter than the reader base 10 as shown in FIG.
The telescopic body 11 is extended and contracted by sliding in the vertical direction in FIGS. 1 and 2 using the leader base 10 as a guide by a hydraulic cylinder 18 built in the leader base 10.
The lower part of the cylinder 181 of the hydraulic cylinder 18 is fixed to the lower part of the reader base 10 by a pin 183. The upper end portion of the rod 182 of the hydraulic cylinder 18 is fixed to the inner top portion of the head portion 112 of the telescopic body 11 by a pin 184.

  Note that the insertion portion 111 of the telescopic body 11 enters the outside so as to enclose the hydraulic cylinder 18. Further, the insertion portion 111 is accommodated in the leader base 10 when the rod 182 of the hydraulic cylinder 18 is contracted, and a part of the lower portion remains on the top of the leader base 10 when the rod 182 is extended.

  Pulleys 113 and 114 are provided before and after the top surface of the head portion 112 of the telescopic body 11. A wire 161 of the electric winch 16 is wound around the pulleys 113 and 114. At the distal end portion of the wire 161, when the auger 5 or the spiral pile 6 is lifted or lowered, a fixture 162 attached to them is provided.

  A suspension support member 115 is provided at the front part on the upper side of the head part 112 so as to protrude forward. A hydraulic motor 2 is attached to the suspension support member 115 so as to be swingable by a pin 21. The hydraulic motor 2 has a rotating shaft 20 at the bottom. An upper end portion (base end portion) of the spiral auger 5 or spiral pile 6 can be detachably attached to the rotary shaft 20 by inserting or removing a pin.

(Function)
FIG. 3 is an explanatory view showing a state in which a drilling pile driving machine is configured by attaching a drilling pile driving attachment to the arm tip of the work machine, and the arm and the attachment are hidden under the overhead line,
FIG. 4 is an explanatory view showing a state in which the attachment for digging pile driving that is hidden under the overhead wire is set up vertically on the ground, the upper part of the leader is further extended, and the auger is extended.
FIG. 5 is an explanatory view of a state where the auger is lowered and drilled in the ground.
FIG. 6 is an explanatory view showing a state where the spiral pile is lifted and attached to the rotating shaft of the motor after the auger is removed,
FIG. 7 is an explanatory view showing a state in which the spiral pile is lowered and the tip portion is stood on the ground,
FIG. 8 is an explanatory view showing a state where a spacer pile is attached between the spiral pile and the motor rotation shaft,
FIG. 9 is an explanatory view showing a state in which the spiral pile is stood up to a predetermined depth.
With reference to FIG. 1 thru | or FIG. 9, the effect | action of the attachment A and the digging pile driving machine B which concern on this invention is demonstrated.

First, the attachment A is attached to the tip of the arm 3 of the hydraulic excavator excavator S that is a working machine. The tip of the arm 3 is pivotally attached to the lower mounting hole 141 of the mounting bracket 14 via a pin, and the tip of the link 30 is pivotally attached to the upper mounting hole 142 via a pin.
When the excavator S of the hydraulic excavator system is stopped on the road side and a pile for housing foundation is built at a point P beyond the overhead line C such as an electric wire, the attachment A is held under the boom 4 and the arm 3. As shown in FIG.

  When the position of the overhead line C (left side in the figure) is exceeded, the boom 4 or the arm 3 is operated to raise the attachment A so that the reader 1 is vertical, and the ground plate 121 of the ground member 12 is grounded to the ground G (FIG. 4). reference). In addition, since the angle changes according to the inclination of the ground G, the ground plate 121 can be reliably placed on the ground G. As a result, unnecessary holes are not formed or roughened on the ground G, so there is no need for leveling or the like, and there is no concern that the operator will be taken off.

The procedure for building piles is as follows.
(1) The extendable spiral auger 5 is attached to the rotary shaft 20 of the hydraulic motor 2 provided on the upper part of the reader 1. The spiral auger 5 is suspended and parallel to the vertical leader 1. The spiral auger 5 is provided so that the spiral member 51 can be slid onto the core member 50 of a required length so that the spiral auger 5 can slide (does not rotate in the circumferential direction). This is a fixed structure.

(2) Remove the locking pin (not shown) of the spiral auger 5 and slide the spiral member 51 of the spiral auger 5 down to the ground. Then, the extensible body 11 on the upper part of the leader 1 is extended to raise the core member 50 of the spiral auger 5, thereby extending the entire length of the spiral auger 5. The spiral auger 5 has a predetermined length, the slide is locked, and the length is fixed (see FIG. 4).
(3) The hydraulic motor 2 is driven to reduce the expansion / contraction body 11 at the upper part of the leader while rotating the rotating shaft 20 to lower the spiral auger 5 and pierce the ground G by the spiral member 51 (see FIG. 5).

(4) The expandable body 11 at the top of the reader 1 is extended to raise the spiral auger 5 and is removed from the hole 100 that has been drilled. The extending spiral auger 5 is reduced by the reverse operation to the above, and the length is fixed with a locking pin.
(5) The spiral auger 5 is removed from the rotary shaft 20 of the hydraulic motor 2, and a spiral pile 6 having a required length is attached to the rotary shaft 20. The attaching / detaching of the spiral auger 5 and the attaching work of the spiral pile 6 are performed by using the electric winch 16 provided in the attachment A and suspended by the wire 161 (see FIG. 6).

(6) The stretchable body 11 at the top of the leader 1 is reduced, and the spiral pile 6 is lowered and passed through the guide hole 171 of the pile guide 17. The hydraulic motor 2 is driven, the spiral pile 6 is further lowered while rotating, and the hole 100 provided in the ground G is built as a guide. When the stretchable body 11 at the top of the leader 1 is most contracted, the upper part of the spiral pile 6 partially protrudes from the ground G (about the length when the spiral auger 5 is contracted) (see FIG. 7).
(7) The rotating shaft 20 of the hydraulic motor 2 is removed from the upper part of the spiral pile 6, and the telescopic body 11 on the upper part of the leader 1 is extended and raised. Then, the spacer pile 60 is detachably joined between the upper portion of the spiral pile 6 remaining on the ground G and the rotating shaft 20 of the hydraulic motor 2 (see FIG. 8).

(8) The hydraulic motor 2 is driven to reduce the stretchable body 11 at the top of the leader 1 while rotating the spiral pile 6 and the spacer pile 60, and the spiral pile 6 and the spacer pile 60 are further lowered and built on the ground G. When the upper end of the spiral pile 6 descends to a position where the required length protrudes from the ground G, the drive of the hydraulic motor 2 is stopped and the spacer pile 60 is removed from the spiral pile 6 and the rotating shaft 20 (see FIG. 9). . In addition, if necessary, the spacer piles 60 can be joined and buried one after another to make a longer pile.
And if necessary, a pile driving operation is performed in the same manner at a plurality of adjacent locations. Further, when it is necessary to further exceed the overhead line C, the work is performed with the attachment A so as to be hidden under the overhead line C in the same manner as described above. In this way, the pile driving operation at the point P is completed.

FIG. 10 is an explanatory view showing means for simply lifting a pile or the like without using a winch.
The digging pile driving machine B can lift and lower the spiral auger 5 and the spiral pile 6 without using the electric winch 16 by utilizing the expansion / contraction function of the expansion / contraction body 11. The method is as follows.

  First, the base end portion of the suspension wire 150 having the attachment 151 at the distal end is attached to the wire attachment piece 15, and the other end is hung on pulleys 113 and 114 provided on the front and back of the top surface of the head portion 112 of the stretchable body 11. . As shown in FIG. 10, the length of the suspension wire 150 is set to a length that allows the attachment tool 151 to rise to the vicinity of the rotary shaft 20 of the hydraulic motor 2 when the telescopic body 11 is extended.

  If comprised in this way, first, if the expansion-contraction body 11 is shrunk | reduced, the spiral pile 6 etc. are attached to the fixture 151 of the suspension wire 150, and if the expansion-contraction body 11 is extended | stretched, it will be twice the stroke of the expansion-contraction body 11. The suspension wire 150 can be pulled by a stroke, and thereby, the work of lifting the spiral pile 6 and the like and attaching it to the rotary shaft 20 becomes possible. In addition, what is necessary is just to perform the hanging-down operation | work of spiral pile 6 etc. in the reverse procedure to the above.

FIG. 11 is an explanatory view showing another configuration of the digging pile driving machine.
In addition, in FIG. 11, the same code | symbol is attached | subjected and shown to the said attachment A and the digging pile driving machine B.

  For example, when building a thicker and stronger pile, or when building a pile on a relatively strong ground, the drilling pile driving machine B changes the configuration and performs the work as the drilling pile driving machine B1. Can do. The method is as follows.

  The arm 3 of the hydraulic excavator excavator S is removed from the boom 4, and the attachment A is attached to the tip of the boom 4. The tip of the boom 4 is pivotally attached to the lower mounting hole 141 of the mounting bracket 14 via a pin, and the tip of the rod 41 of the hydraulic cylinder 40 is pivotally attached to the upper mounting hole 142 via a pin.

  After the attachment 1 reader 1 is vertically placed on the ground G, the interval fixing member 7 is detachable between the attachment portion 42 provided at the front portion of the hydraulic excavator excavator S and the connection bracket 13 of the attachment A. Attach to. The interval fixing member 7 can be adjusted in length by turning the adjustment handle 70. By rotating the adjustment handle 70 tightly in the extending direction or the reducing direction, it is an auxiliary but substantially attached portion. The distance between 42 and the connecting bracket 13 can be fixed.

In this way, the digging pile driving machine B1 can be configured. According to the digging pile driving machine B1, the boom 4, the attachment A, and the interval fixing member 7 form a triangular shape, and the joints are firmly fixed so that the joints are not shaken or loosened. Can dig and pile up.
Therefore, since the digging pile driving machine B1 can support the attachment A more firmly than the case where the attachment is attached to the tip of the arm 3 as described above, when building a thicker and stronger pile Or, when you build a pile on a relatively strong ground, you can work reliably.

  FIG. 12 shows another embodiment of the attachment for digging piles, and is an explanatory view of the structure of the lower part of the leader. In addition, in FIG. 12, the same code | symbol is attached | subjected and shown to the same or equivalent location as the said attachment A. In FIG.

In this embodiment, the lower portion of the reader 1 can be extended and contracted, and the lower portion of the reader 1 can be grounded without operating the boom 4 or the arm 3 from the state where the attachment A is suspended in the air.
The ground plate 121 of the ground member 12 can swing as described above. A slide body 120 is provided above the grounding member 12, and the slide body 120 is accommodated in a guide 101 provided at the bottom of the reader base 10 so as to be slidable up and down.
A hydraulic cylinder 102 is provided on the rear surface side of the leader base 10, and a downward-facing rod 103 is pivotally attached to an angle 123 provided backward from the slide body 120 via a pin.

According to the above structure, when setting the attachment A as a construction site, the reader 1 is set vertically with the ground plate 121 as the lower end of the reader 1 floating from the ground G, and the boom 4 and the arm 3 are moved. In addition, the rod 103 of the hydraulic cylinder 102 can be extended and the ground plate 121 can be grounded to the ground G.
As described above, according to the present embodiment, the operation of the boom 4 or the arm 3 can be performed more easily and quickly than the simultaneous adjustment of the ground contact and the verticality of the lower end portion of the reader 1 to the ground G.

  FIG. 13 shows another embodiment of the attachment for digging piles, and is an explanatory diagram of the structure of the upper part of the leader. In addition, in FIG. 13, the same code | symbol is attached | subjected and shown to the same or equivalent location as the said attachment A. In FIG.

The expansion / contraction stroke of the elastic body is appropriately set according to the length of the pile to be built. In the attachment A shown in FIG. 1 and FIG. 2, the insertion part 111 of the expansion / contraction body 11 is only one stage. However, like the reader 1a of the attachment A1 of this embodiment, the insertion part 111a of the expansion / contraction body 11a is arranged in two stages. It can also be.
In the reader 1a, a hydraulic cylinder 18a that expands and contracts the expansion and contraction body 11a has a two-stage rod 182a.
According to this, the expansion / contraction stroke of the expansion / contraction body 11a can be further lengthened, and a longer pile can be built.

  Note that the terms and expressions used in the present specification are merely explanatory and not restrictive, and do not exclude terms and expressions equivalent to the above terms and expressions. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the technical idea.

Explanatory drawing which shows one Example of the attachment for digging pile driving based on this invention. Explanatory drawing which shows the state to which the leader upper part of the attachment for digging pile driving shown in FIG. 1 extended | stretched. Explanatory drawing which shows the state which attaches the attachment for digging pile driving to the arm front-end | tip of a working machine, comprises a digging pile driving machine, and has the arm and the attachment hidden under the overhead wire. Explanatory drawing which shows the state which extended the auger extension by extending the leader upper part vertically, and setting the attachment for digging pile driving which sunk under the overhead line upright. Explanatory drawing of the state where the auger was lowered and drilled in the ground. Explanatory drawing which shows the state which lifted the spiral pile and attached to the rotating shaft of the motor after removing an auger. Explanatory drawing which shows the state which dropped the spiral pile and stood the front part on the ground. Explanatory drawing which shows the state which attached the spacer pile between the spiral pile and the motor rotating shaft. Explanatory drawing which shows the state which stood up the spiral pile to predetermined depth. Explanatory drawing which shows the means to lift a pile etc. simply, without using a winch. Explanatory drawing which shows the other structure of a digging pile driver. The other example of the attachment for digging pile driving is shown, and the structure explanatory view of a leader lower part. The other example of the attachment for digging pile driving is shown, and the structure explanatory view of the leader upper part. Explanatory drawing which shows the usage method of the conventional digging pile driver.

Explanation of symbols

A, A1 Drilling pile driving attachment B, B1 Drilling pile driving machine S Hydraulic excavator excavator 1, 1a Leader 10 Leader base 11, 11a Stretching body 100 Hole 101 Guide 102 Hydraulic cylinder 103 Rod 111, 111a Insertion Portion 112 Head portion 113, 114 Pulley 115 Suspension support member 12 Ground member 120 Slide body 121 Ground plate 122 Shaft 123 Angle 13 Connection bracket 131 Connection hole 14 Mounting bracket 141, 142 Mounting hole 15 Wire mounting piece 150 Wire 151 Mounting tool 16 Electric winch 161 Wire 162 Mounting tool 17 Pile guide 171 Guide hole 18 Hydraulic cylinder 181 Cylinder 182 Rod 183, 184 Pin 18a Hydraulic cylinder 182a Rod 2 Hydraulic motor 20 Rotating shaft 21 Pin Arm 30 links 4 boom 40 hydraulic cylinder 41 the rod 42 shaft attaching portion 5 spiral auger 50 core member 51 spiral member 6 Spiral pile 60 spacer pile 7 intervals fixing member 70 Adjustment handle C overhead line G ground P points

Claims (6)

A drilling pile driving attachment that is used by attaching to the boom (4) or arm (3) of the work machine (S),
The attachment comprises a reader (1),
The reader (1) includes a leader base (10) attached to the boom (4) or arm (3) of the work machine (S), and the leader base (10). A stretchable body (11) for changing the length, and means (18) for stretching the stretchable body (11),
The stretchable body (11) is provided with a motor (2) for rotating the drilling tool (5) or the pile (6),
Attachment for digging piles. Characterized by comprising means (16,160) for lifting the drilling tool (5) or the pile (6),
The digging pile driving attachment according to claim 1. The lower part (12) of the leader base (10) is extendable and contractible,
The digging pile driving attachment according to claim 1 or 2. A grounding member (121) for grounding to the ground is provided at the bottom of the reader base (10), and the grounding member (121) is configured to change the angle according to the inclination of the ground,
Attachment for digging pile driving according to claim 1, 2, or 3. It has a connecting portion (13) for providing a spacing fixing member (7) between the work base (S) and the lower part of the leader base (10),
The attachment for digging pile driving according to claim 1, 2, 3 or 4. The reader (1) is provided, and the reader (1) is provided on the reader base (10) attached to the boom (4) or the arm (3) of the work machine (S), and the reader base (10). A stretchable body (11) for changing the height or length of the leader (1), and means (18) for expanding and contracting the stretchable body (11). (5) or a motor (2) for rotating the pile (6) is provided,
Drilling pile driver.

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