JP2006265965A - Method of erecting pile, attachment for erecting pile, work unit for erecting pile, and spline pile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a work unit for erecting a pile which improves the workability by reducing the frequency of work for replacing a buffering member mounted on a cap body. <P>SOLUTION: The work unit S is provided with an arm 90 and a boom 91. An attachment M1 for erecting the pile is mounted on a front part of the arm 90. The attachment M1 for erecting the pile comprises a mounting metal piece 1, a vibration generating device 2 for generating vibrations, and a cap body 3 for capping an upper part side of the pile. The cap body 3 is formed into a shape of a round tube and is mounted on a lower surface of a lower face plate 21 of the vibration generating device 2, in a manner of extending downward. Two rows of spacers 30 are fixed to the lower face plate 21, constituting an inside of the cap body 3, in parallel. A round rod-like engaging body 31 is fixed to an inner peripheral surface of the cap body 3. The cap body 3 is provided with liquid conveying pipes 32, 33 so that cooling water is sent to the inside from the outside through a peripheral wall part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a pile erection method using a work machine such as a hydraulic excavator excavator having a vibration generator provided at the tip of an arm, a pile erection attachment, a work erection machine for building a pile, and an employment pile. About.
More specifically, the present invention relates to an improvement in workability by reducing the frequency of exchanging work of the buffer member mounted on the pile holding portion when the pile is built using the buffer member.

  In the construction of buildings such as ordinary houses, it is important to construct the foundation that will be the foundation of the building. Since the foundation is provided on the ground, it is necessary to secure the strength of the ground in order to construct a foundation having sufficient strength. As one of the means for strengthening the ground, a method is known in which a large number of piles are built on the ground and a foundation is formed thereon. This method is widely used because the construction cost can be made relatively low.

  For example, a working machine such as a hydraulic excavator excavator having a mounting attachment attached to the tip of an arm is used for building the pile. Some built-in attachments include a vibration generator. Such a built-in attachment is provided with a metal contact plate that hits the upper side of the pile at a high speed on the lower side of the vibration generator, and a pile holding member that covers the lower surface of the contact plate on the upper side of the pile. It has a structure in which an annular cap body as a member is suspended.

  Conventionally, piles have been built by placing a cap body on the upper side while standing on the ground and directly hitting the upper surface with a contact plate. However, in this erection method, since the metal contact plate is directly applied to the upper surface of the pile, there is a problem that considerable noise is generated at the time of erection. Therefore, in recent years, a disk-shaped wooden cushioning member having a required thickness is placed in the cap body, and the upper surface of the pile is struck by this cushioning member. As a result, noise during installation can be suppressed. The buffer member described above is attached in a state of tightly fitting inside the cap body so that it does not fall even when the opening side of the cap body faces downward.

However, the following problems also existed in the construction of piles using cushioning members.
When building a pile with an attachment for attachment with a buffer member in the cap body, the first few can be built without any trouble. However, when a certain number was built, white smoke gradually started to be generated from the cushioning member due to frictional heat, and the cushioning member was scorched black and broken into pieces by building a pile. Therefore, in actual work, when white smoke starts to be generated, the work is temporarily stopped and the buffer member is replaced with a new one. When there were many to build, this exchange work was repeated many times. In other words, the erection method using the buffer member has the effect of suppressing noise, but the workability is poor because it requires labor and time for replacement.

  The object of the present invention is to improve the workability by reducing the frequency of replacement work of the cushioning member even when the pile is built using the cushioning member. The purpose is to provide attachments, working machines for building piles, and hiring piles.

Means taken by the present invention to achieve the above object are as follows.
In the first invention,
A method of building a pile using a work machine in which a vibration generator is provided at the tip of an arm,
The vibration of the vibration generator is transmitted to the pile through the buffer means, and the arm is lowered while the buffer means is cooled, and the pile is built in the ground.
It is a method of erection of piles.

In the second invention,
A method of building a pile using a work machine in which a vibration generator is provided at the tip of an arm,
The vibration of the vibration generator is transmitted to the pile through the buffering means, and the pile is built in the ground by lowering the arm while applying cooling liquid to the buffering means.
It is a method of erection of piles.

In the third invention,
A pile mounting attachment that is used at the tip of the arm of the work machine,
A pile holder to which a buffer member can be attached;
A vibration generator for vibrating the pile holder,
Cooling means for cooling the buffer member mounted on the pile holder,
Characterized by comprising
It is an attachment for erection of piles.

In the fourth invention,
A working machine with an arm,
A built-in attachment according to the third invention provided at the tip of the arm;
A cushioning member that can be attached to the pile holder;
Characterized by comprising
It is a work machine that builds piles.

In the fifth invention,
An employment pile that can be used with a work machine in which an employment pile holder that can be fitted with a buffer member and a vibration generator that vibrates the employment pile holder is provided at the tip of the arm,
An employment pile main body having a required length is provided, and the employment pile main body is provided with a cooling means for cooling the buffer means provided so as to transmit the vibration of the vibration generator to the pile. And
It is a hiring pile.

In the sixth invention,
Employment pile holder that can be fitted with a buffer member, and an employment pile that is used together with a work machine provided with a vibration generating device that vibrates the employment pile holder at the tip of the arm,
A hiring pile body having a required length is provided, and a liquid storage space capable of storing a coolant is provided in the upper portion of the hiring pile body. When the hiring pile body vibrates by the vibration generator, The cooling liquid overflows from the liquid passing portion of the liquid storage space and is configured to cool the buffer member.
It is a hiring pile.

(Work)
According to the pile building method according to the present invention, the pile is constructed such that the vibration of the vibration generator is transmitted to the pile through the buffering means, and the arm is lowered while cooling the buffering means in this state. It is.

  According to the pile erection method according to the present invention, the pile is configured such that the vibration of the vibration generator is transmitted to the pile via the buffering means, and the arm is lowered while cooling the buffering means with the cooling liquid in this state. Built.

  In the pile mounting attachment according to the present invention, a cushioning member is attached to the pile holder in a state of being provided at the tip of the arm of the work machine, the pile is held by the pile holder, and the vibration of the vibration generator is buffered. It is used to build the pile by lowering the arm while cooling the buffer member by the cooling means so as to be transmitted to the pile through the means.

  In the working machine according to the present invention, a buffer member is attached to a pile holding body of a building attachment provided at the tip of an arm, the pile is held by the pile holding body, and the vibration of the vibration generating device is passed through the buffer means As it is transmitted to the pile, it is used to build the pile by lowering the arm while cooling the buffer member by the cooling means.

  In the employment pile according to the present invention, a buffer member is attached to the employment pile holding body provided at the tip of the arm, the employment pile is held by the employment pile holding body, and the vibration of the vibration generator is piled up through the buffering means. The cooling means of the hired pile is used to lower the arm and build the pile while cooling the cushioning member.

  According to the present invention, since the pile can be built while cooling the buffering means, it is possible to prevent the buffering means from being scorched and become shabby, and the life of the buffering means can be extended. As a result, the frequency of exchanging work of the buffer means can be reduced, so that the labor and time required for the exchange can be reduced, and as a result, the number of piles that can be built per unit time can be increased. That is, the workability in the pile building work can be improved.

Embodiments of the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a use state explanatory diagram showing an embodiment of a work machine according to the present invention,
FIG. 2 is an exploded perspective view showing a building attachment, a buffer member and a wooden pile provided at the tip of the arm,
Fig. 3 is a bottom view of the built-in attachment,
FIG. 4 is an explanatory view of a longitudinal section of the mounting attachment.

  The code | symbol S has shown the working machine which builds a pile. The work machine S includes an arm 90 and a boom 91. A built-in attachment M1 for building a pile is attached to the tip of the arm 90 so as to be rotatable in the front-rear direction.

With reference mainly to FIG. 2, the mounting attachment M1 will be described in detail.
The mounting attachment M1 includes a mounting bracket 1 for attaching to the arm 90 of the work machine S, a vibration generating device 2 that generates vibration, and a cap body 3 that is a pile holding body that covers the upper side of the pile. Yes.

  The mounting bracket 1 includes two brackets 10 and 10. The brackets 10 and 10 are vertically suspended on the upper surface plate 20 of the vibration generating device 2 with a required interval. Each bracket 10 has pin insertion holes 100, 100 formed in two places.

  Since the vibration generator 2 uses a known technology that obtains power from a hydraulic pipe (oil line) provided on the front side of the arm 90, detailed description thereof is omitted. However, the vibration generator 2 is not limited to the above-described one, and for example, a vibration generator provided with a power generator can be used.

  The cap body 3 is formed in a short circular tube shape having a required outer diameter. The cap body 3 is suspended from the lower surface of the lower surface plate 21 of the vibration generator 2. On the lower surface of the lower surface plate 21 corresponding to the inside of the cap body 3, a plurality of spacers 30 having a required thickness are arranged side by side and fixed in two rows. On the inner peripheral surface of the cap body 3, round bar-shaped locking bodies 31 having a required diameter are fixed at four locations at equal intervals in the circumferential direction.

  The cap body 3 is provided with liquid supply pipes 32 and 33 as cooling means so that cooling water as cooling liquid can be sent from the outside through the peripheral wall portion. Specifically, the liquid supply pipe 32 corresponds to the spacer 30 attached to the lower surface of the lower surface plate 21, and the upper surface of the buffer member 4 (described later) placed in the cap body 3 through the gap formed by the spacer 30. 40 is provided at a height such that cooling water can be poured. Further, the liquid feeding pipe 33 can apply cooling water to the lower surface 41 of the buffer member 4 through a slight gap between the upper surface of the pile and the buffer member 4 that are intermittently formed by vibration when the pile is built. It is provided at a very high position. Although not described, tap water can be supplied to the liquid feed pipes 32 and 33 as cooling water.

  In the peripheral wall portion of the cap body 3, attachment holes 34, 34 having a long hole shape in the vertical direction are formed to face each other. An instrument such as an auger is attached to the attachment holes 34, 34 as necessary.

  The mounting attachment M <b> 1 is attached to the tip of the arm 90 by providing the attachment pins P in the pin insertion holes 100, 100 of the attachment fitting 1.

  For the erection of the pile using the erection attachment M <b> 1, a buffer member 4 that is a disk-shaped wooden buffer means having a required thickness is provided inside the cap body 3. The buffer member 4 is formed by abutting straight portions of constituent members having a semicircular shape to form a disc, and the discs are formed in two layers so that the straight portions are orthogonal to each other. Moreover, the buffer member 4 is formed so that the outer diameter is slightly larger than the inner diameter of the inner portions of the locking bodies 31. Therefore, the buffer member 4 is attached in a state in which the edge portion slightly bites into the locking body 31 in the state of being put inside, and thus it is difficult to fall. The buffer member 4 is put in the cap body 3 so that the upper surface 40 is applied to the spacer 30 and attached so that a gap by the spacer 30 is formed in the cap body 3.

(Work)
With reference to FIG. 1 thru | or FIG. 4, the effect | action of the working machine S and the attachment M1 which are shown in this Embodiment is demonstrated. In addition, the pile used the wooden pile K of full length 4m in this Embodiment.

  The wooden pile K covers the cap body 3 of the mounting attachment M1 on the upper side in a standing state on the ground, and lowers the arm so that the vibration of the activated vibration generator 2 can be transmitted through the buffer member 4. And built in the ground.

  By building several wooden piles K, white smoke begins to be generated from the buffer member 4 by frictional heat. When white smoke is generated, cooling water is supplied into the cap body 3 from the liquid supply pipes 32 and 33. Since the cooling water has different heights of the liquid feeding pipes 32 and 33, the coolant supplied from the liquid feeding pipe 32 passes through the gap formed by the spacer 30 and further passes through the gap of the spacer 30 and the buffer member. 4 is applied to the upper surface 40 of 4. Moreover, what is supplied from the liquid feeding pipe 33 is applied to the lower surface 41 through a gap formed intermittently with the buffer member 4 by vibration. Thereby, the buffer member 4 is cooled and can be prevented from being burnt and shabby.

  The cooling water supplied from the liquid feeding pipes 32 and 33 penetrates into the buffer member 4 from the upper surface 40 and the lower surface 41 of the buffer member 4. As a result, the buffer member 4 slightly expands and further bites into the locking body 31 and becomes more difficult to fall (see the imaginary line in FIG. 3).

  In addition, the cooling water supplied from the liquid feeding pipes 32 and 33 hangs down from the gap between the inner peripheral surface of the cap body 3 and the outer edge of the buffer member 4 formed by the locking body 31 after cooling the buffer member 4. And drained to the outside of the cap body 3.

  As described above, according to the mounting attachment M1, the buffer member 4 can be cooled by the cooling water supplied into the cap body 3, and the buffer member 4 can be prevented from being burnt and crushed. Can extend the lifespan. Thereby, since the frequency of the replacement | exchange operation | work of the buffer member 4 can be decreased, the effort and time concerning replacement | exchange can be reduced, and also the number of the piles which can be built per unit time can also be increased. That is, the workability in the pile building work can be improved.

  Moreover, since the lifetime of the buffer member 4 can be extended, the number of the buffer members 4 used in one field can also be reduced compared with the past, and the number of the buffer members 4 used as garbage can also be reduced.

  In this embodiment, the cooling water is supplied from the liquid feeding pipe 32 after the white smoke is generated. However, this is not limited, and the cooling water may be supplied before the white smoke is generated. it can. Further, the cooling water can be supplied continuously or intermittently.

  Moreover, although the wooden cushioning member is used in the present embodiment, it is not limited to this, and for example, a rubber or synthetic resin can be used.

  In the present embodiment, the wooden pile K is used as the pile, but this is not limited. For example, a concrete pile, a steel pipe pile, a composite pile combining concrete, reinforcing bars, or the like can be used. When building concrete piles or composite piles, chipping of the edges can be prevented by using a buffer member.

FIG. 5 is an explanatory diagram of a use state showing an embodiment of an employment pile according to the present invention.
Reference numeral 5 indicates a hired stake. The hiring pile 5 includes an hiring pile body 50 formed of a circular pipe. Disc-shaped closing plates 51 and 52 are fixed to places slightly inside the hire pile main body 50 from the upper and lower ends. Of these, the upper closing plate 51 is fixed in a watertight manner to the inner peripheral surface of the hiring pile main body 50. The closing plate 52 provided on the lower side serves as a contact surface that contacts the upper surface of the wooden pile K.

  On the upper side of the hiring pile 5, a connecting shaft insertion portion 53 for inserting a connecting shaft for connecting to an attachment M <b> 2 (described later) provided on the arm 90 penetrates the hiring pile main body 50 in the length direction. It is formed so as to be orthogonal to. The connecting shaft insertion portion 53 is formed by inserting the cylindrical body 530 into the hiring pile main body 50 and fixing the cylindrical body 530 to the hiring pile main body 50 in a watertight manner. The lower part of the cylindrical body 530 is in contact with the closing plate 51, and this part is also watertight.

  Two partition walls 54, 54 are erected on the upper portion of the connecting shaft insertion portion 53 in a state where a required interval is provided. Each partition wall 54 is provided in a watertight manner with the hiring pile main body 50 and the cylindrical body 530. Further, the peripheral wall portion of the hiring pile main body 50 that hits between the partition walls 54, 54 is cut out, and thereby the groove portion 55 is formed by the partition walls 54, 54 on the upper portion of the hiring pile 5. The width of the groove portion 55 is smaller than the inner diameter of the connecting shaft insertion portion 53 formed by the cylindrical body 530.

  On the upper end portion of the hiring pile 5, semicircular blocking plates 56, 56 are covered with the upper end portion of the hiring pile main body 50 and the partition wall 54 like a lid and fixed in a watertight manner. In this way, liquid storage space portions 57 that are cooling means formed in a watertight manner are formed on both sides of the upper groove portion 55 in the hire pile main body 50. Each closing plate 56 is formed with a through hole 560 that is a liquid passage portion, and the liquid storage space portion 57 is in communication with the outside through the through hole 560.

  Reference numeral 58 indicates a hanging metal fitting used when the hiring pile 5 is lifted by the work machine. The suspension fittings 58, 58 are provided so as to face the outer peripheral portion of the hiring pile main body 50. Each suspension fitting 58 is formed with a through hole 580 for hanging the wire Y.

(Work)
FIG. 6 is an explanatory view showing a state in which a wooden pile is built using the hiring pile and the erection attachment shown in FIG.
With reference to FIG. 6, the effect | action of the attachment M2 and the hiring pile 5 is demonstrated. In FIG. 6, the same or equivalent parts as those shown in FIGS. 1 to 4 are given the same reference numerals. Further, in the following description, the description overlapping with the above-described part of the structure is omitted except for necessary matters. Further, description of substantially the same operations and effects caused by the configuration common to the above-described mounting attachment M1 will be omitted.

  A mounting attachment M2 is attached to the tip of the arm 90 of the working machine. The mounting attachment M2 is substantially the same as the above-described mounting attachment M1 except that it does not include one liquid feeding pipe 33 that supplies cooling water to the lower surface 41 of the buffer member 4 shown by the mounting attachment M1. Since it has a structure, detailed description is omitted.

  As an operation prior to installation, cooling water is injected into the liquid storage space 57 of the hiring pile 5. The cooling water is injected from the through hole 560 so as to fill the liquid storage space 57. Moreover, the buffer member 4 is put in the cap body 3 of the mounting attachment M2. Then, the hired pile 5 is connected to the arm 90 of the work machine by the wire Y passed through the through hole 580 of the suspension fitting 58, and the connecting shaft (not shown) is passed through the attachment holes 34, 34 and the connecting shaft insertion portion 53. Then, this hire pile 5 is attached to the cap body 3 so as to be rotatable.

  When the pile 5 is built, the lower side is placed on the upper side of the wooden pile K, and the closing plate 52 provided inside the hired pile main body 50 is placed on the upper surface of the wooden pile K. In addition, the upper side of the hiring pile 5 is put in the cap body 3 so that the closing plate 56 is applied to the buffer member 4.

  The wooden pile K is built in the ground by lowering the arm so that the vibration of the vibration generating device 2 is transmitted through the buffer member 4 and the hiring pile 5.

  When the wooden pile K is built, the hiring pile 5 is also vibrated by the vibration generator 2. Therefore, the cooling water injected into the liquid storage space 57 overflows to the outside from the through hole 560 of the closing plate 56 and starts to be applied to the lower surface 41 of the buffer member 4. As a result, the lower surface 41 can be cooled, and the buffer member 4 can be prevented from being burnt and shabby. The upper surface 40 of the buffer member 4 is cooled by the cooling water supplied from the liquid feeding pipe 32.

  The terms and expressions used in this specification are merely explanatory and are not limiting at all, and exclude terms and expressions equivalent to the features described in this specification and parts thereof. There is no intention to do. It goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

The use condition explanatory drawing which shows one Embodiment of the working machine which concerns on this invention. The exploded perspective explanatory view showing the attachment for attachment, the buffer member, and the wooden pile provided at the tip of the arm. The bottom view of the attachment for erection. It is a longitudinal cross-sectional explanatory drawing of the attachment for insertion. The use condition explanatory drawing which shows one Embodiment of the employment pile which concerns on this invention. Explanatory drawing which shows the state which has built the wooden pile using the hiring pile and the attachment for construction shown in FIG.

Explanation of symbols

S Work machine M1 Mounting attachment M2 Mounting attachment K Wooden pile P Mounting pin Y Wire 1 Mounting bracket 10 Bracket 100, 100 Pin insertion hole 2 Vibration generator 20 Upper surface plate 21 Lower surface plate 3 Cap body 30 Spacer 31 Locking body 32 Liquid feeding pipe 33 Liquid feeding pipe 34 Mounting hole 4 Buffer member 40 Upper surface 41 Lower surface 5 Pile 50 Pile body 51 Closure plate 52 Closure plate 53 Connecting shaft insertion portion 530 Cylindrical body 54 Partition wall 55 Groove portion 56 Closure plate 560 Through-hole 57 Liquid storage space 58 Suspension fitting 580 Through-hole 90 Arm 91 Boom

Claims (6)

A method of building a pile using a work machine in which a vibration generator is provided at the tip of an arm,
The vibration of the vibration generator is transmitted to the pile through the buffer means, and the arm is lowered while the buffer means is cooled, and the pile is built in the ground.
How to build a pile. A method of building a pile using a work machine in which a vibration generator is provided at the tip of an arm,
The vibration of the vibration generator is transmitted to the pile through the buffering means, and the pile is built in the ground by lowering the arm while applying cooling liquid to the buffering means.
How to build a pile. A pile mounting attachment that is used at the tip of the arm of the work machine,
A pile holder to which a buffer member can be attached;
A vibration generator for vibrating the pile holder,
Cooling means for cooling the buffer member mounted on the pile holder,
Characterized by comprising
Pile erection attachment. A working machine with an arm,
The erection attachment according to claim 3 provided at the tip of the arm;
A cushioning member that can be attached to the pile holder;
Characterized by comprising
A work machine for building piles. An employment pile that can be used with a work machine in which an employment pile holder that can be fitted with a buffer member and a vibration generator that vibrates the employment pile holder is provided at the tip of the arm,
An employment pile main body having a required length is provided, and the employment pile main body is provided with a cooling means for cooling the buffer means provided so as to transmit the vibration of the vibration generator to the pile. And
Hire pile. Employment pile holder that can be fitted with a buffer member, and an employment pile that is used together with a work machine provided with a vibration generating device that vibrates the employment pile holder at the tip of the arm,
A hiring pile body having a required length is provided, and a liquid storage space capable of storing a coolant is provided in the upper portion of the hiring pile body. When the hiring pile body vibrates by the vibration generator, The cooling liquid overflows from the liquid passing portion of the liquid storage space and is configured to cool the buffer member.
Hire pile.

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