JP2001355234A - Pressing-in method for pile, pipe or the like and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a labor-saving pressing-in method and its device merely requiring weak reaction of the expansion/shrinkage of a cylinder for labor saving in case of the soft ground, allowing anyone with little experience to press-in a longer pile, pipe or the like simply, quickly, and precisely even in a narrow space without requiring an auxiliary apparatus such as a spirit level, and pressing-in the pipe against the reaction of the expansion/shrinkage of the cylinder or the reaction of a jack according to the numerical value of the press-in force. SOLUTION: The pipe 3 is pressed-in against the reaction of the expansion/shrinkage of the cylinder 2 provided on the lower end face of the jack 1, the cylinder is provided with an umbrella section 5 abutting the end edge of the pipe 3 and a tube section 6 guiding the inner periphery of the pipe, and multi-stage recessed grooves 7 or the like are formed on the outer peripheral wall of the tube section. The pipe 3 is repeatedly pressed-in by a coupling means 8 coupled with the recessed groove or the like against the reaction of the expansion/shrinkage of the cylinder in case of the soft ground. The jack provided on a slab or the arm of a heavy machine is operated in case of the hard ground, and the pile or pipe is pressed-in against the reaction by this pressing-in method and its device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for easily press-fitting piles or pipes of any diameter in a narrow space by exchanging attachments and stoppers. The present invention relates to a press-fitting method for piles or pipes capable of performing a labor-saving press-fitting method according to hardness and a device therefor.

[0002]

2. Description of the Related Art Conventionally, the operation process of heavy machinery is limited in a narrow space, and the press-fitting method of a pile or a pipe in a narrow space requires a lot of manual work, is inefficient, and the working environment is poor.
Therefore, as a method of press-fitting a pile, a cutout for press-fitting a foundation pile provided below the existing foundation is provided on the outer end face of the base of the existing foundation as disclosed in Japanese Patent Application Laid-Open No. 9-78580.
Install a reaction girder with a jack above this notch,
Although the foundation pile is press-fitted through the cutout portion, a cutout portion for press-fitting the pile below the existing foundation is provided on the outer end face of the base portion of the existing foundation. The weakened and extra work must be performed in poor conditions in a small space, and the space for installing a reaction girder with jacks is also required, which limits the piles to be pressed into. As a disclosure of the prior art of the present invention, the one shown in FIGS. 11 to 14 of this publication is to press-fit a pile with a jack attached to a slab. It is difficult to work in a dark and narrow place while inspecting with a level and digging a horizontal hole or applying a concentrated load to a part of the existing foundation.

[0003]

Therefore, first, piles and pipes are press-fitted against the reaction force of expansion and contraction of the jack and the cylinder attached to the lower end surface of the jack. To provide a labor-saving press-fitting method that requires only a weak reaction force due to cylinder expansion and contraction. Secondly, in addition to the first problem, the cylinder is provided with an attachment provided with an umbrella portion abutting on the pipe edge and a tubular portion guiding the inner circumference of the pipe, so that it can be easily used even in a dark and narrow space. By providing attachments for various diameters, etc., anyone with little experience can provide a press-fitting method that is quick, appropriate, and does not require auxiliary equipment such as a spirit level. Third,
In addition to the first or the second problem, a multi-stage concave groove or the like is formed on the outer peripheral wall of the cylindrical portion of the attachment, and the reaction force of the expansion and contraction of the cylinder is repeatedly performed by using an engaging means that is fitted with the concave groove or the like. That longer piles, pipes, etc. can be press-fitted. Fourthly, in addition to any of the first to third problems, when the ground is weak, the cylinder is press-fitted against the reaction force of expansion and contraction of the cylinder, and when the ground is hard, the jack is attached to a slab or an arm of a heavy machine. And press-fit against the reaction force.According to the condition of the ground, press-fit while press-fitting. The present invention provides a press-fitting method which can solve the problem that a concentrated load is applied and cracks are generated in an existing foundation, particularly when a jack attached to an arm or the like of a heavy machine is actuated.
Fifthly, by providing a jack and a cylinder attached to the lower end surface of the jack, a weak reaction force of expansion and contraction of the cylinder can be used when the ground is weak, and a labor-saving press-fitting device is provided. Sixth, in addition to the fifth problem, an attachment provided with an umbrella portion that comes into contact with the pipe edge and a tubular portion that guides the inner periphery of the pipe is attached to the cylinder, and a multi-stage is provided on the outer peripheral wall of the tubular portion of the attachment. By forming the concave groove and the like and the engaging means to be fitted with the concave groove and the like, it is possible to easily prepare attachments corresponding to various diameters and the like even in a dark and narrow space, so that inexperienced To provide a press-fitting device that can press-fit even longer piles and pipes quickly, appropriately, and without the need for auxiliary equipment such as a spirit level. Seventh, in addition to the fifth or sixth problems, a jack attached to an arm or the like of a slab or heavy equipment,
Attach an attachment provided with a cylinder attached to the lower end surface of this jack, and an umbrella portion that comes into contact with the pipe edge and a cylinder portion that guides the outer circumference of the pile or the inner circumference of the pipe. By forming a multi-step groove on the wall and engaging means for fitting the groove and the like, press-fit against the reaction force of cylinder expansion and contraction on weak ground, and slab on hard ground Or, by operating the jack attached to the arm of the heavy equipment and press-fitting against the reaction force, according to the condition of the ground, press-fit while pressing in according to the state of the ground, actuate the reaction force of the expansion and contraction of the cylinder or the jack The press-fitting can be done by the reaction force, and the labor-saving press-fitting method can be performed.In particular, if the jack attached to the arm of heavy equipment is operated, concentrated load will be applied and cracks will occur on the existing foundation. Providing a press-fitting device with resolve.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention firstly provides a pile which is press-fitted against a reaction force of expansion and contraction of a cylinder attached to a lower end surface of a jack. Or it is a press-fitting method such as pipes. Secondly, the cylinder is provided with an attachment provided with an umbrella portion abutting on an end of the pipe and a cylindrical portion for guiding the inner periphery of the pipe, wherein the pile or the pipe according to claim 1 is press-fitted. It is a construction method. Thirdly, a multi-step concave groove or the like is formed on the outer peripheral wall of the cylindrical portion of the attachment, and the press-fitting is performed against the reaction force of the expansion and contraction of the cylinder repeatedly by using an engaging means to be fitted with the concave groove or the like. A method of press-fitting a pile or a pipe according to claim 1 or 2, characterized in that: Fourth, when the ground is weak, press-fitting is performed against the reaction force of expansion and contraction of the cylinder, and when the ground is hard, the jack attached to the slab or the arm of the heavy equipment is actuated and pressed in against the reaction force. A method for press-fitting a pile or a pipe according to any one of claims 1 to 3. Fifth, there is provided a press-fitting device such as a pile or a pipe, wherein a jack and a cylinder attached to a lower end surface of the jack are attached. Sixth, the cylinder is provided with an attachment provided with an umbrella portion that comes into contact with the pipe edge and a pipe portion that guides the inner circumference of the pipe of the pile, and a multi-step groove or the like is provided on the outer peripheral wall of the pipe portion of this attachment. The press-fitting device for a pile or a pipe according to claim 5, wherein an engaging means for fitting the groove or the like is formed. Seventh, a jack attached to a slab or an arm of a heavy machine, a cylinder attached to a lower end surface of the jack, an umbrella portion abutting on a pipe edge and a cylinder portion guiding the inner periphery of the pipe are provided on the cylinder. 7. The attachment according to claim 5, wherein a multi-step groove or the like and an engaging means for fitting to the groove or the like are formed on an outer peripheral wall of a cylindrical portion of the attachment. Press-fitting device such as a pile or pipe.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method and an apparatus for press-fitting a pile or a pipe according to the present invention will be described based on embodiments. 1 to 10 are drawings of various embodiments of the present invention. Basically, as shown in FIGS. 1 (A) and 1 (B),
A press-fitting method and a press-fitting method in which a pile or a pipe 3 is pressed into the ground against a reaction force of expansion and contraction of a cylinder 2 attached to a lower end surface of a jack 1 with a pin 13 or the like. This cylinder 2
Is preferably an attachment provided with an umbrella portion 5 abutting on the pipe edge and a tubular portion 6 guiding the inner periphery of the pipe in the case 4 of the cylinder 2, when the pile or the pipe 3 is pressed into the ground. Acts as a guide in the direction, and can securely press-fit a pile or pipe 3 in the desired direction. In the case of a weak ground, a weak reaction force of cylinder expansion and contraction is sufficient, and labor-saving construction can be performed. It also acts as a damper for sudden reaction forces. Further, the case 4 of the cylinder 2 may be attached to the bottomed cylindrical portion 6, or the case 4 and the cylindrical portion 6 may be fixed by welding, press fitting, or the like. Further, although not shown, the method of press-fitting the pile is such that a concave portion is formed at the lower end of the pipe 3 to support the head of the pile and press-fit the pipe 3 or press-fit the pipe 3.
The lower end of the pile and the head of the pile may be connected by a chuck or the like, or the pipe 3 may be used as an attachment. The pile may be various PC piles, RC piles, pine piles, triangular piles, or piles at deformation places. However, when an attachment is used, a conical cutter may be attached to the tip of the pipe. Furthermore, the pipe is not limited to a circular shape, but may be a square, polygon, ellipse, or the like, and may be in a narrow space. The present invention is not limited to the construction in the present invention, and the present invention is a broad concept of a press-fitting method and an apparatus for the above-described various piles or pipes. Piles or pipes etc. "
That.

Further, in the case of a construction in which a long pile or a pipe 3 is inserted deeply, as another embodiment, as shown in FIGS. 2 (A) to 2 (C), a multi-stage is formed on the outer peripheral wall of the cylindrical portion 6 of the attachment. Are formed by using the stopper 8 inserted into the groove 7 and repeatedly press-fitted against the reaction force of the expansion and contraction of the cylinder, so that a pile or pipe having a desired length even with a small stroke of the cylinder is formed. 3 mag can be inserted deeply. Further, as shown in FIG. 2 (C), a multi-stage concave groove 7 of the cylindrical portion 6 into which a plug 12 may be inserted between the pipe 3 and the attachment is provided.
As shown in FIG. 7, they may be provided in parallel to the left and right sides facing the outer peripheral wall of the cylindrical portion 6, or may be provided in a slit shape only in one direction, though not shown. Further, as shown in FIG. 8, the stopper 8 may be a pin having a flat U-shape or a rod fitted into the shape of the concave groove 7. Further, as shown in FIG. 9, in FIG. 9A, a large number of blocks 7a are attached to the outer peripheral wall of the cylindrical portion 6 in multiple stages at equal intervals, and in FIG. Forming a multi-stage concave groove 7b around the circumference,
In (C), a pair or multi-directional projections 7d are formed on the outer peripheral wall of the cylindrical portion 6, and a multi-stage hole groove 7c is formed in at least one projection 7d of the pair or the multi-direction projections 7d. Although not shown, or when not shown, when a pipe is used as an attachment, one of the pipe and the tubular portion is used as a female screw, and the other is screwed as a male screw to move the tubular portion up and down. Is also good. Hereinafter, in the present invention, the above-mentioned various grooves, blocks, hole grooves, screws, and the like are referred to as “grooves”, and stoppers, pins, rods, screws, and the like are referred to as “engaging means for fitting these grooves and the like”.

Further, when the ground is weak such as a sand layer, press-fitting is performed against the reaction of expansion and contraction of the cylinder, and when the ground is hard such as a gravel layer and a clay layer, a jack attached to a slab or an arm of a heavy equipment is operated. It is advisable to press in against the reaction force. in this case,
Due to various conditions such as the condition of the ground, the pressure of the cylinder, the performance of the jack, and the diameter of the pile or pipe to be pressed, the ground such as a sand layer is weak and the sandy gravel layer, clay layer, etc. can not be distinguished from the hard ground. The jack may be changed according to the desired numerical value of the input. The jacks and cylinders can be driven manually or hydraulically, hydraulically, pneumatically, or various gaseous pressures, and the jacks are not shown, but they are attached to slabs or arms of heavy machinery by applying loose materials such as rubber. May be. Hereinafter, in the present invention, jacks and cylinders of various driving means as described above are simply referred to as "jacks" and "cylinders".

[0008] Further, the apparatus of the above-mentioned press-fitting method,
Basically, as shown in FIG. 1, it is a press-fitting device such as a pile or a pipe in which a jack 1 and a cylinder 2 attached to a lower end surface of the jack 1 are attached by pins 13 or the like. Preferably, an attachment provided with an umbrella portion 5 abutting on the pipe edge and a cylindrical portion 6 for guiding the inner periphery of the pipe is attached to the cylinder 2, and a multi-stage as described above is attached to the outer peripheral wall of the cylindrical portion 6 of the attachment. A press-fitting device such as a pile or a pipe, in which a concave groove 7 or the like and an engaging means for engaging with a concave groove such as a stopper 8 are formed. Further, as a press-fitting device of another embodiment, a fitting 1 is attached to a slab 9 or an arm 10 of a heavy machine.
1, a jack 1 attached thereto, a cylinder 2 attached to a lower end surface of the jack 1, an umbrella portion 5 abutting on an end of the pipe, and a cylindrical portion 6 guiding the inner circumference of the pipe. A press-fitting device, such as a pile or a pipe, in which an attachment is attached, and a multistage concave groove 7 and engaging means for engaging with a concave groove such as a stopper 8 are formed on an outer peripheral wall of a cylindrical portion 6 of the attachment.

Next, the operation will be described with reference to FIG.
As shown in the drawings, the center of the load of the cylindrical portion 6 of the attachment serving as the press-fitting device is lifted by a crane, and the attachment serving as the press-fitting device is inserted in a horizontal state into a steel pipe pile, for example. The top portion is lifted by a crane, and a steel pipe pile is erected on the pile core at the location of the guide casing. Then, the jack 1 provided with the cylinder 2 is attached to the slab or the arm 10 of the heavy equipment with a cushioning material such as rubber. After installing the main unit, the connection between the cylinder 2 and the attachment, the connection between the arms 10 and the like are surely performed and checked, and the intermediate pile may be suspended and welded together. At low speed, then press-fit against the reaction force of cylinder expansion and contraction on weak ground, and attached to slab or arm of heavy equipment etc. on hard ground Actuating the Yakki is pressed against the reaction force, that is, cause pressed against the reaction force to operate the jack by the desired value of the force-insertion force. Then, in the case of construction in which a long pile or a pipe 3 or the like is to be inserted deeply, the attachment serving as the press-fitting device is pulled up, and is inserted into the concave groove 7 or the like of the outer peripheral wall of the cylindrical portion 6 of the attachment so as to come into contact with the edge of the pipe 3 or the like. The stopper 8 is inserted and press-fitting is performed again. At this time, as described above, when the ground is weak, the press-fit is performed against the reaction force of the expansion and contraction of the cylinder, and when the ground is hard, the slab or the arm of a heavy machine is attached. The jack is actuated and press-fitted against the reaction force, and the jack is switched according to the value of the press-in.

[0010]

First, piles and pipes are press-fitted against the reaction force of expansion and contraction of the jack and the cylinder attached to the lower end surface of the jack. Therefore, when the ground is weak, the expansion and contraction of the cylinder is weak. This is a press-fitting method with less damage because the jack acts as a damper to absorb sudden street hits during cylinder operation. Secondly, in addition to the first effect, by attaching an attachment provided with an umbrella portion abutting on the pipe edge and a tubular portion guiding the inner circumference of the pipe to the cylinder,
It is an accurate press-fitting method that allows anyone with little experience to quickly, properly, and without the need for auxiliary equipment such as a spirit level by easily preparing attachments for various apertures even in dark and narrow spaces. Third, in addition to the first and second effects, a multi-step concave groove or the like is formed on the outer peripheral wall of the cylindrical portion of the attachment, and the cylinder is repeatedly used by using an engaging means fitted with the concave groove or the like. By press-fitting against the reaction force of expansion and contraction, it is possible to press-fit even longer piles and pipes reliably and accurately. Fourth, in addition to any of the first to third effects,
When the ground is weak, press-fit against the reaction force of cylinder expansion and contraction,
When the ground is hard, the jack attached to the arm of the slab or heavy equipment is actuated and press-fitted against the reaction force. Activate the jack and press it by the reaction force, and press-fitting method that can save labor can be done.In particular, if the jack attached to the arm etc. of heavy equipment is operated,
This is a press-fitting method that solves the problem that a concentrated load is applied and cracks occur in the existing foundation. Fifth, by installing a jack and a cylinder attached to the lower end surface of the jack, a weak reaction force for the expansion and contraction of the cylinder is sufficient when the ground is weak, so that a press-fitting device that saves labor can be achieved. Sixth
Further, in addition to the fifth effect, an attachment having an umbrella portion in contact with the end of the pipe and a cylindrical portion for guiding the inner periphery of the pipe is attached to the cylinder, and a multi-stage concave portion is formed on the outer peripheral wall of the cylindrical portion of the attachment. By forming a groove or the like and forming an engaging means for fitting with the concave groove or the like, even an inexperienced person can easily prepare an attachment adapted to various diameters and the like even in a dark narrow space. This is a press-fitting device that can press-fit even longer piles, pipes, etc. quickly, appropriately and without the need for auxiliary equipment such as a spirit level. Seventh
In addition to the fifth or sixth effect, a jack attached to a slab or an arm of a heavy equipment, a cylinder attached to a lower end surface of the jack, an umbrella portion and a pile contacting the cylinder with a pipe edge are provided. Attachment provided with a cylindrical portion that guides the outer circumference or the inner circumference of the pipe is formed, and a multistage concave groove or the like is formed on the outer peripheral wall of the cylindrical portion of the attachment, and an engaging means for fitting with the concave groove or the like is formed. In the case of weak ground, press-fitting was performed against the reaction force of the expansion and contraction of the cylinder, and in the case of hard ground, the jack attached to the slab or arm of heavy equipment was actuated and pressed in against the reaction force. Depending on the value of the press-fit while press-fitting, according to the numerical value of the press-fit, the reaction force of the expansion and contraction of the cylinder or the jack is actuated and the press-fit is performed depending on the reaction force. If caused to operate the set the jack, a press-fit apparatus which has solved the problem of cracks in the existing foundation takes concentrated load.

[Brief description of the drawings]

FIG. 1 (A) and (B) show one of the cylinders of the present invention.
FIG. 3 is a cross-sectional front view of a press-fitting device such as a pile or a pipe in a state where it is press-fitted by a stroke.

2 (A) and 2 (B) are cross-sectional front views of a press-fitting device such as a pile or a pipe in a state of being press-fitted by a re-pressed cylinder according to the present invention.

FIG. 3 is a sectional front view of a main part in a state where an attachment of the present invention and a cylinder attached to a jack are attached.

FIG. 4 (A) is a state in which the attachment of the present invention and a cylinder are attached, and FIG. 4 (B) is a sectional front view of a main part in a state where the cylinder is further inserted into a pipe.

FIG. 5 is a cross-sectional side view of FIG. 4B of the present invention.

FIG. 6 is a plan view of FIG. 4B of the present invention.

FIG. 7 is a plan view of FIG. 5 of the present invention.

FIG. 8 is a cross-sectional side view of a main part of the present invention as viewed from a direction B in FIG. 2;

9 (A) to 9 (C) are cross-sectional front views of main parts of another embodiment of the attachment of the present invention.

FIGS. 10A to 10C are work process diagrams of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Jack 2 Cylinder 3 Pipe 4 Case 5 Umbrella part 6 Cylindrical part 7, 7a-7c Groove etc. 8 Engaging means 10 Arm 11 Metal fitting

Claims (7)

[Claims] 1. A press-fitting method for a pile or a pipe, which is press-fitted against a reaction force of expansion and contraction of a cylinder attached to a lower end surface of a jack. 2. The pile or pipe according to claim 1, wherein an attachment provided with an umbrella portion in contact with an end of the pipe and a cylindrical portion for guiding the inner periphery of the pipe is attached to the cylinder. Press-in method. 3. A multi-step concave groove or the like is formed on the outer peripheral wall of the cylindrical portion of the attachment, and the fitting is repeatedly press-fitted against the reaction force of the expansion and contraction of the cylinder by using an engaging means fitted with the concave groove or the like. 3. A method for press-fitting a pile or a pipe according to claim 1 or claim 2. 4. When the ground is weak, press-fitting is performed against the reaction force of expansion and contraction of the cylinder. When the ground is hard, the jack attached to the slab or the arm of the heavy equipment is actuated to press-fit against the reaction force. The press-fitting method for a pile or a pipe according to any one of claims 1 to 3. 5. A press-fitting device such as a pile or a pipe, wherein a jack and a cylinder attached to a lower end surface of the jack are mounted. 6. An attachment having an umbrella portion in contact with an end of a pipe and a cylindrical portion for guiding the inner periphery of the pipe is attached to the cylinder, and a multi-step groove or the like is provided on an outer peripheral wall of the cylindrical portion of the attachment. The press-fitting device for a pile or a pipe according to claim 5, wherein an engaging means for fitting the groove or the like is formed. 7. A jack attached to an arm or the like of a slab or heavy equipment, a cylinder attached to a lower end surface of the jack, an umbrella portion abutting an end edge of a pipe on the cylinder, and a cylinder portion guiding an inner circumference of the pipe. The attached attachment is attached, and a multi-stage concave groove or the like and an engaging means for fitting with the concave groove or the like are formed on the outer peripheral wall of the cylindrical portion of the attachment. A press-fitting device such as the above-mentioned pile or pipe.