JP2005127077A - Press-in pile driver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a press-in pile driver which is not inclined when pressing in, small and lightweight and high in working efficiency. <P>SOLUTION: A main hydraulic pressure cylinder 6 connecting a chuck device 5 chucking a press-in pile into the underground and a pile press-in body 4 and vertically moving the chuck device 5 to press-in is provided, and arranged in the pile press-in machine body 4 side than the central line L of a pile that the hydraulic pressure cylinder 6 is held by the chuck device 5, the beam member 7b is extended from the clamp 2 fixing the pile press-in machine body 4 to the existing pile 20, and can be detached from the beam member 7b and the chuck device 5 an auxiliary hydraulic pressure cylinder 8 connecting the beam member 7b and the chuck device 5 is provided, and the main hydraulic pressure 6 and the auxiliary hydraulic pressure cylinder 8 are driven concurrently. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pile press-in machine for press-fitting a sheet pile, a steel pipe or a pile (hereinafter simply referred to as a pile) into the ground, and more specifically, a pile is gripped by a chuck device, and the chuck device is moved up and down by a fluid pressure cylinder. The present invention relates to a pile press-in machine that presses a pile into the ground.

  Conventionally, a pile press-fitting machine generally used includes a clamp for tightening an existing pile and a slide base fixed on the existing pile by this clamp. On this slide base, a pile presser body is placed so as to be able to move forward and backward in the direction in which the pile is driven. A chuck device for gripping the pile is attached to the pile presser body with respect to the pile presser body. Engage in a slidable manner to move up and down. And the pile presser main body and the chuck device are connected by a fluid pressure cylinder. The fluid pressure cylinder is driven to move the chuck device up and down to press-fit the pile into the ground.

  The conventional general pile presser has a structure that supports the reaction force received from the pile when the pile is press-fitted by the existing pile, and the reaction force received from the pile is transferred from the chuck device to the pile presser body, slide base, It is transmitted to the existing pile through the clamp. According to such a structure, when the ground becomes hard, the reaction force received from the pile increases, the pile presser main body tilts backward, and the press-fit pile may tilt. If the pile to be pressed in is tilted, the tip resistance of the pile increases, and a greater reaction force is applied. And as the number of piles to be laid increases, the inclination increases, leading to deterioration in construction accuracy.

  In order to prevent the inclination of the pile to be press-fitted, it is necessary to firmly configure the pile presser main body so that the pile presser main body does not tilt due to the reaction force from the pile. However, if the pile presser main body is firmly configured, the pile presser is increased in size and weight, which not only increases the price of the pile presser, but also increases the transportation cost and the construction cost.

  As a configuration for reducing the press-fit resistance of the pile, for example, a method using a water jet is known. In the water jet method, water is jetted from a tip of a pile to be press-fitted at a high pressure to form a water jet, reducing the press-fitting resistance of the pile against hard ground, and improving work efficiency.

  However, in the configuration using a water jet, a water jet main body, a notch tank (water tank) and other ancillary equipment are necessary, and transportation of these equipment is also necessary. Moreover, in construction, additional work such as installation of a jet hose, installation of a jet nozzle, and recovery of the jet hose after the work is required, and construction efficiency is deteriorated. Therefore, in the method using the water jet, the construction cost and the construction unit price increase.

  Further, in the conventional general pile press-in machine, the fluid pressure cylinder for moving the chuck device up and down is disposed closer to the pile press-in body than the center line of the pile held by the chuck device. For this reason, the axis of the force applied to the fluid pressure cylinder and the center line of the pile do not coincide with each other, and a loss occurs in the force for press-fitting the pile. Therefore, in order to apply a predetermined force to the pile, it is necessary to use a fluid pressure cylinder that generates a force larger than the predetermined force.

  Furthermore, the conventional common pile press-in machine has a sliding portion in which the chuck device engages with the pile press-in machine main body so as to be movable up and down. In this sliding part, the force in the direction other than the sliding direction due to the reaction force from the pile at the time of press-fitting of the pile and the mismatch between the axis of force by the fluid pressure cylinder and the center line of the pile, specifically A bending moment is applied. For this reason, the wear of the sliding portion is severe, frequent maintenance is required, and the burden of maintenance cost is large.

  As a configuration for reducing the loss of force due to the fluid pressure cylinder, for example, a configuration using a chuck device in which a plurality of fluid pressure cylinders are arranged opposite to each other on a diagonal line passing through the center line of a press-fit pile has been proposed. . (See Patent Document 1). According to this configuration, the center of the pile gripped by the chuck device can coincide with the axis of the force applied by the plural pairs of fluid pressure cylinders. For this reason, the loss of force can be reduced as compared with the conventional configuration in which the fluid pressure cylinder is linked to one side of the chuck device.

  However, even with the configuration described in Patent Document 1, the reaction force of the pile to be pressed is transmitted to the existing pile through the chuck device, the pile presser main body, the slide base, and the clamp as in the conventional general pile presser. There is no change in the configuration. For this reason, there is a possibility that the pile presser body is inclined by the reaction force of the pressed-in pile and the pressed-in pile is inclined. Therefore, in order to prevent the inclination of the pile, it is necessary to form the pile presser main body firmly as in the past, and it is difficult to reduce the size and weight of the pile presser.

  Further, when construction is performed using a conventional pile press-in machine, it is necessary to replace the pile press-in machine itself with a large one if the ground becomes hard during construction. For this reason, conveyance and installation of a pile press-in machine are needed again, and construction efficiency falls.

JP-A-6-257148

  In view of the situation as described above, the problem to be solved by the present invention is that the pile to be pressed does not tilt even if the force to press-fit the pile is increased, or the press-fitting is performed without increasing the size of the pile press-fitting machine body. Can increase the force to be pressed, or can reduce the size of the pile presser machine without reducing the force to press-fit the pile, or press the pile at a high speed when the pile can be pressed with a small force, and when a large force is required It is providing the pile press-in machine which can press-in a pile with big force, without replacing a main body.

  In order to solve this problem, the invention according to claim 1 is configured such that a chuck device for gripping a pile to be press-fitted into the ground or the like, and the chuck device and the pile press-fitting machine main body are connected to move the chuck device vertically. In a pile presser having a fluid pressure cylinder for press-fitting a pile, a beam member is extended from a clamp for fixing the pile presser body on an existing pile, and is detachable from the beam member and the chuck device. The gist further includes a second fluid pressure cylinder that links the member and the chuck device, and presses the pile by simultaneously driving the fluid pressure cylinder and the second fluid pressure cylinder. .

  As a disposition position of the second fluid pressure cylinder, as described in claim 2, the fluid pressure cylinder is disposed on a side closer to the pile presser body than a center line of the pile gripped by the chuck device. In the pile press-in machine, the second fluid cylinder may connect the beam member and the chuck device at a position farther from the pile press-in body than the center line of the pile held by the chuck device. desirable.

  As a drive mechanism of the second fluid pressure cylinder, as described in claim 3, the fluid pressure cylinder and the second fluid pressure cylinder are supplied with fluid from a common fluid supply source. A path that drives and supplies fluid to at least the second fluid pressure cylinder is provided with a path opening / closing valve that switches between opening and closing the path and a flow rate adjusting valve that adjusts the flow rate of the fluid to be supplied. Is desirable.

  Further, as described in claim 4, the pile presser body is placed on a slide base fixed to a clamp for tightening an existing pile so as to be movable forward and backward, and the beam member includes: It is desirable that the pile presser body can be expanded and contracted in the same direction as the forward / backward movement.

  Here, as described in claim 5, it is desirable that the beam member is capable of swinging in a plane perpendicular to a center line of a pile held by the chuck device.

  According to the first aspect of the present invention, the reaction force of the press-fitted pile is transmitted from the chuck device to the existing pile through the second fluid pressure cylinder, the beam member, and the clamp. For this reason, the reaction force applied to the pile presser main body is reduced, and the pile presser can be firmly configured to prevent inclination of the press-in pile without causing an increase in size and weight. That is, as compared with the conventional pile presser, if the same force is applied, the pile presser main body can be reduced in size and weight. Further, even when a large force is applied, it is not necessary to increase the size and weight of the pile presser body.

  Since the second fluid cylinder is removable, the ground is soft and can be press-fitted with a small force, or the pile tilts even if it is press-fitted only with the fluid pressure cylinder connecting the pile presser body and the chuck device. If not, the second fluid pressure cylinder is removed, and the press-fitting operation can be performed only with the fluid pressure cylinder that links the pile presser body and the chuck device. Furthermore, if the hardness of the ground changes and becomes harder during construction, the press-fitting operation is continued without replacing the pile presser by replacing the second fluid pressure cylinder with a stronger one. be able to.

  According to invention of Claim 2, when the fluid pressure cylinder which connects a chuck apparatus and a pile presser main body applies force to a pile in the position on the pile presser main body side from the centerline of the pile which a chuck | zipper apparatus hold | grips At the same time, the second fluid pressure cylinder applies a force to the pile at a position away from the pile presser main body from the center line of the pile held by the chuck device. For this reason, the axial line of the force by the fluid pressure cylinder connecting the chuck device and the pile presser body and the second fluid pressure cylinder can be brought close to the center line of the pile held by the chuck device, or Can be matched. Therefore, the loss of force can be reduced as compared with a configuration in which force is applied on one side of the conventional chuck device. At the same time, since the moment applied to the engaging portion between the chuck device and the pile presser body can be reduced, the wear of the engaging portion can be reduced, and the maintenance of the pile presser is facilitated and the maintenance cost is reduced. Can be achieved.

  According to the third aspect of the present invention, the fluid pressure cylinder that connects the chuck device and the pile presser body and the second fluid pressure cylinder can be driven by a common drive mechanism. For this reason, even if the number of fluid pressure cylinders is increased, the drive mechanism is not enlarged or complicated. If the flow rate adjusting means for adjusting the flow rate of the fluid is arranged in the path for supplying the fluid to the second fluid pressure cylinder, the diameters of the fluid pressure cylinder and the second fluid pressure cylinder are different. Can be operated simultaneously at the same speed.

  In this case, since the second fluid pressure cylinder is detachable and can be replaced as necessary, the operation of the flow rate adjusting valve can be performed even when the second fluid pressure cylinder is replaced with one having a different diameter. Only the fluid pressure cylinder and the second fluid pressure cylinder can cooperate.

  Also, when the ground is soft and the pile can be press-fitted with a small force, only the fluid pressure cylinder connecting the chuck device and the pile presser body is closed by closing the fluid supply path to the second fluid pressure cylinder. With this, the chuck device can be driven. At this time, if the total flow rate of the supplied fluid is the same, the amount of fluid that is not supplied to the second fluid pressure cylinder is supplied to the fluid pressure cylinder, and the working speed is increased by increasing the driving speed. Can be improved.

  If the beam member can be expanded and contracted in the same direction as the pile presser main body, the connecting portion between the beam member and the second fluid pressure cylinder is integrated with the pile presser main body. Can move forward and backward. For this reason, when the pile presser is self-propelled, when the pile presser main body is moved forward and backward, the disengagement work between the second fluid pressure cylinder and the chuck device or the beam member is unnecessary, and the work efficiency is improved. be able to.

  In addition, as described in claim 5, if the beam member can swing in a plane perpendicular to the center line of the pile held by the chuck device, the pile press-fitting is performed to change the driving direction of the pile. Interference between the chuck device and the beam member can be avoided when the machine body is turned. For this reason, the freedom degree of the pile driving direction is not impaired.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a view of a pile press-fitting machine according to an embodiment of the present invention as viewed from the side in the direction in which the pile is driven, and a diagram schematically showing a drive system. Drawing 2 is a figure seen from the upper part of the direction of an axis of a pile which press-fits this pile press-fitting machine. In addition, the arrow a in a figure shows the driving | running | working driving direction of a pile, and the arrow b shows the press-fit direction of a pile.

  The pile press-in machine 1 according to the present embodiment includes one or more clamps 2 (an example including two clamps shown in the figure) that tightens an existing pile 20 and a slide base 3 fixed to the clamps 2. Prepare. A pile presser main body 4 is placed on the slide base 3 and configured to be movable back and forth in the direction in which the pile is driven relative to the slide base 3. A chuck device 5 for gripping the pile engages with the pile presser body 4 in such a manner that the pile presser body 4 can move forward and backward in the press-in direction of the pile, that is, move up and down. The chuck device 5 includes a chuck 5a for gripping a pile, and a main body 6a of a pair of main fluid pressure cylinders 6 is disposed on one side near the pile presser main body 4. Further, the tip of the piston 6 b of the main fluid pressure cylinder 6 is connected to the pile presser body 4. When viewed from the direction shown in FIG. 1, the main fluid pressure cylinder 6 is arranged at a position where the center line M is biased toward the pile presser body 4 side from the center line L of the pile gripped by the chuck device 5. Configured to be installed.

  The clamp 2, the slide base 3, the pile presser main body 4 and the advancing / retracting mechanism of the pile presser main body 4, the chuck device 5 and the chuck 5a have the same configuration as that of a conventional general pile presser. Description is omitted.

  A beam member slide base 7 a extends from the clamp 2. The beam member slide base 7a is formed integrally with the clamp 2, and is firmly configured so as to be hardly deformed by an external force.

  The beam member 7b engages with the beam member slide base 7a so as to be able to advance and retract in the same direction as the advance and retreat direction of the pile presser body 4. The structure of the engaging part of the beam member slide base 7a and the beam member 7b can apply the same structure as the structure in which the pile presser main body 4 moves forward and backward on the slide base 3. Specifically, for example, a guide groove in which a guide roller is disposed is formed in the beam member slide base 7a, and the beam member 7b slides along the guide groove.

  A piston 8b of the auxiliary fluid pressure cylinder 8 is connected to one end of the beam member 7b. The cylinder body 8a of the auxiliary fluid pressure cylinder 8 is detachably connected to the chuck device 5. As a connecting structure between the cylinder body 8a and the chuck device 5, for example, a structure in which a universal joint bracket is formed on the cylinder body 8a and a universal joint pin is disposed so as to be insertable / removable can be applied.

  The auxiliary fluid pressure cylinder 8 has a distance from the pile presser body 4 to the center line N of the auxiliary fluid pressure cylinder 8 and a distance from the pile presser body 4 to the center line L of the pile gripped by the chuck device 5. It is arranged at a larger position. In other words, when the pile presser 1 is viewed from the direction shown in FIG. 1, that is, when viewed from the side in the pile driving direction, the center line M of the main fluid pressure cylinder 6 and the center of the auxiliary fluid pressure cylinder 8 The center line L of the pile gripped by the chuck device 5 is positioned between the line N and the line N.

  The chuck device 5 is configured to move up and down by operating the main fluid pressure cylinder 6 and the auxiliary fluid pressure cylinder 8. The main fluid pressure cylinder 6 and the auxiliary fluid pressure cylinder 8 are driven by receiving a supply of working fluid from a common fluid supply facility 9. The fluid supply facility 9 is a facility for supplying a working fluid to the main fluid pressure cylinder 6 and the auxiliary fluid pressure cylinder 8 at a predetermined pressure, and various known fluid supply facilities can be applied. A path 10b for supplying fluid to the auxiliary fluid pressure cylinder 8 is provided with a path opening / closing valve 11 for switching opening and closing of the fluid path and a flow rate adjusting valve 12 for adjusting the flow rate of the fluid. As the path opening / closing valve 11 and the flow rate adjusting valve 12, various known path opening / closing valves and flow rate adjusting valves can be applied. Further, the path opening / closing valve and the flow rate adjusting valve are not independent of each other, and one path opening / closing / flow path adjusting valve having both functions may be provided.

  According to such a structure, it can be made to cooperate by supplying a fluid to the main fluid pressure cylinder 6 and the auxiliary fluid pressure cylinder 8. For this reason, the axis of the force applied to the pile can be brought closer to or coincident with the center line L of the pile gripped by the chuck device 5 as compared with a conventional general pile press-fitting machine. Therefore, the loss of force applied to the pile can be reduced, and the efficiency of the force can be improved.

  The reaction force received from the press-fitted pile is transmitted from the auxiliary fluid pressure cylinder 8 to the existing pile 20 through the beam member 7b, the beam member slide base 7a, and the clamp 2. For this reason, it is possible to reduce the inclination of the pile to be press-fitted and to reduce the size and weight of the pile press-fitting machine main body, as compared with the conventional configuration that transmits to the existing pile through the pile presser main body. it can.

  And when the center line of the force applied to the pile to press-fit and the center line L of the pile to press-fit correspond or approach, it is other than the sliding direction concerning the engaging part of the chuck apparatus 5 and the pile presser main body 4 The power is reduced. For this reason, the wear of the engaging portion is reduced, the service life can be extended, frequent maintenance is not required, and the maintenance cost can be reduced.

  Further, since the auxiliary fluid pressure cylinder 8 is detachable by inserting / removing pins, the auxiliary fluid pressure cylinder 8 can be appropriately replaced according to the hardness of the ground to be press-fitted and the resistance of the tip of the pile to be press-fitted. That is, in the past, when the hardness of the ground became hard during construction, there was no means other than replacing the pile presser itself with a strong one, but by replacing it with a large auxiliary fluid pressure cylinder, Construction can be continued without replacing the pile presser itself. In this case, since the reaction force from the pile is not transmitted to the pile presser main body 4 greatly, there is no inclination in the press-fit pile even if the press-fitting force is increased.

  Even when the auxiliary fluid pressure cylinder 8 and the main fluid pressure cylinder 6 have different diameters or when the auxiliary fluid pressure cylinder 8 is replaced with one having a different diameter, a path for supplying fluid to the auxiliary fluid pressure cylinder 8 By operating the flow rate adjusting valve 12 disposed at 10b, the main fluid pressure cylinder 6 and the auxiliary fluid pressure cylinder 8 can be driven at the same speed to cooperate.

  On the other hand, when the ground into which the pile is press-fitted is soft, at least one of the connection between the auxiliary cylinder 8 and the beam member 7b or the chuck device 5 is released, and the path opening / closing valve 11 is operated to operate the auxiliary fluid pressure cylinder 8 The passage 10b for supplying the fluid to is closed. In this way, the pile can be press-fitted only by the main fluid pressure cylinder 6. At this time, since all the fluid supplied from the fluid supply equipment 9 is used for driving the main fluid pressure cylinder 6, the press-fitting speed can be increased as compared with the case of cooperating with the auxiliary fluid pressure cylinder 8. Construction efficiency can be improved.

  Thus, even when the ground hardness changes during construction, when the ground is soft, the main fluid pressure cylinder 6 presses the pile at a high speed and the ground becomes hard. Can be press-fitted in cooperation with the auxiliary fluid pressure cylinder 8 with a large force so that the pile does not tilt. Accordingly, it is possible not only to improve the construction accuracy and to reduce the size and weight of the pile presser, but also to improve the construction efficiency.

  In addition, the beam member 7b includes a part that engages with the beam member slide base 7a and a part that is connected to the auxiliary fluid pressure cylinder 8 as separate members. As shown in FIG. 2, the portion on the side connected to the auxiliary fluid pressure cylinder 8 is in a plane perpendicular to the center line L of the pile gripped by the chuck device 5 with the center line of the pin 8c as the center of oscillation. It is configured to be swingable, specifically swingable in the direction of arrow c. For this reason, when turning the pile presser main body 4 in order to change the pile driving direction, it is possible to avoid interference with the chuck device 5 by swinging the beam member 7b.

  Below, the example of the actual operation | movement of the pile press-fit machine which has such a structure is described. FIG. 2 is a diagram schematically showing a construction procedure of the pile press-fitting machine according to the present embodiment.

  (1) As shown to Fig.3 (a), the pile 21 to press-fit is built first, a normal line and a perpendicularity are confirmed, and press-fit work is started. At this time, if the press-fit tonnage exceeds a predetermined tonnage, the auxiliary fluid pressure cylinder 8 and the chuck device 5 are connected, and the path opening / closing valve for supplying fluid to the auxiliary fluid pressure cylinder 8 is opened. Then, the flow rate adjusting valve is operated so that the auxiliary fluid pressure cylinder is driven at the same speed as the main fluid pressure cylinder. Then, the main fluid pressure cylinder 5 is driven or the main fluid pressure cylinder 5 and the auxiliary fluid pressure cylinder 8 cooperate to press-fit the pile. When the upper end of the pressed pile 21 reaches a predetermined height, the press fitting of the pile 21 is finished.

  (2) After press-fitting the pile, the path opening / closing valve is closed and the connection between the auxiliary fluid pressure cylinder 8 and the chuck device 5 is released. Then, as shown in FIG. 3B, the pile presser main body 4 is slid forward on the slide base 3 to the position for press-fitting the next pile (direction of arrow d). Then, the pile 22 to be press-fitted next is held by the chuck device, the normal line and the verticality are confirmed, and the press-fitting of the pile 22 is started. In the state where the pile presser main body 4 is slid, the pile is press-fitted using only the main fluid pressure cylinder 6. And here, the pile is press-fitted to such an extent that the weight of the pile press-in machine 1 can be supported.

  (3) When the pile is press-fitted to the extent that it can support the weight of the pile press-in machine, the clamp tightening is released and the mainstream is held with the chuck device 5 as shown in FIG. 3 (c). The body pressure cylinder 6 is driven and the slide base is raised (moved in the direction of arrow e). When the clamp 2 is raised until the clamp 2 is completely removed from the pile, the slide base 3 is moved in the pile driving direction (direction of arrow f). Then, as shown in FIG. 2D, the slide base 3 is lowered (in the direction of the arrow g) to engage the clamp 2 with the pile and tighten it. Thereafter, the process returns to (1), and thereafter the same operation is repeated.

  In order to make the pile presser 1 self-propelled, when pressing a pile to such an extent that the weight of the pile presser 1 can be supported, it is not necessary to press with a large force. For this reason, as mentioned above, by operating only the main fluid pressure cylinder 6 and press-fitting a pile, it is possible to quickly shift to press-fitting of the next pile, and the construction efficiency can be improved.

  In addition, since the beam member expands and contracts in the same direction as the sliding direction of the pile presser body, when the ground is hard, self-propelled operation and pile press-in can be performed without releasing the connection between the auxiliary fluid pressure cylinder and the chuck device. The operation can be performed continuously, and the construction efficiency can be improved.

  Although various embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention. Nor.

  For example, in FIG. 1, the beam member slide base is configured to extend from one clamp, but may be configured to extend from a plurality of clamps. If the beam member slide base is configured to extend from a plurality of clamps, the beam member and the auxiliary fluid pressure cylinder can be more firmly supported, and the inclination due to the reaction force of the pile during press-fitting can be further reduced. it can.

It is the figure which added the drive mechanism typically to the external appearance top view which showed typically the pile press-fit machine concerning an embodiment of the invention, and is the figure seen from the side of the pile driving direction. It is the external appearance top view which showed typically the pile press-fit machine which concerns on embodiment of this invention, and was the figure seen from the upper direction of the press-fit of a pile. It is the figure which showed typically the construction point by the said pile press-in machine, (a) is the state at the time of the press-fit operation of a pile, (b) is the state at the time of the press-fit of a pile, (c) is pile press-fit. (D) shows the state at the start of press-fitting work of the next pile.

Explanation of symbols

1 Pile presser 4 Pile presser body 5 Chuck device 6 Main fluid pressure cylinder 7b Beam member 8 Auxiliary fluid pressure cylinder 20 Existing pile

Claims (5)

  In a pile presser equipped with a chuck device for gripping a pile to be press-fitted into the ground, etc., and a fluid pressure cylinder that presses the pile by linking the chuck device and the pile presser main body and moving the chuck device up and down, A second fluid pressure cylinder that extends from a clamp that fixes the pile presser body on the pile, is detachable from the beam member and the chuck device, and connects the beam member and the chuck device; A pile press-in machine further comprising a pile press-fit by simultaneously driving the fluid pressure cylinder and the second fluid pressure cylinder.   In the pile presser in which the fluid pressure cylinder is disposed closer to the pile presser body than the center line of the pile gripped by the chuck device, the second fluid cylinder is a pile gripped by the chuck device. The pile presser according to claim 1, wherein the beam member and the chuck device are connected to each other at a position farther from the pile presser main body than the center line.   The fluid pressure cylinder and the second fluid pressure cylinder are driven by receiving fluid supply from a common fluid supply source, and at least a path for supplying fluid to the second fluid pressure cylinder includes The pile press-fitting machine according to claim 1 or 2, wherein a path opening / closing valve for switching between opening and closing of the path and a flow rate adjusting valve for adjusting a flow rate of the supplied fluid are disposed.   The pile presser body is slidably mounted on a slide base fixed to a clamp for tightening an existing pile, and the beam member has the same direction as the forward and backward movement of the pile presser body The pile press-fit machine according to any one of claims 1 to 3, wherein the pile press-fit machine is capable of extending and contracting.   5. The pile press-fitting machine according to claim 1, wherein the beam member is capable of swinging in a plane perpendicular to a center line of a pile held by the chuck device.

Images