JP7229739B2 - pile press machine - Google Patents

Description

The present invention relates to a pile press-in machine for press-fitting piles into the ground.

As a method of driving and burying various steel pipe piles and shaped steel piles into the ground, the upper end of the existing pile embedded in the ground is gripped with a clamp to absorb the reaction force, and the chuck holding the pile is moved up and down. , a construction technique is known in which new piles are sequentially pressed into positions adjacent to existing piles.

The pile press-in machine used for such construction has a saddle that is fixed to the existing pile via a plurality of clamps, and a slide frame that can move forward and backward relative to the saddle. A liftable chuck is attached to the leader mast. Piles such as steel sheet piles, steel pipe sheet piles, steel pipe piles, and concrete piles are known as piles used for press-fitting. Then, the chuck is positioned at a predetermined position with respect to the saddle, and the pile that is hung by a crane or the like and brought to a predetermined position is gripped by the chuck. It is designed to be press-fitted into the

Here, it is difficult to manually support the movement of the pile suspended by a crane or the like onto the chuck. The larger the chuck, the easier it is to insert the pile into the chuck, but the whole pile press-in machine becomes large and heavy. Therefore, in a pile press-in machine, in order to make it easier to transport a pile suspended by a crane or the like to a predetermined position, for example, Patent Document 1 discloses a pair of left and right guide rods in a space above the chuck that spreads toward the tip side. A peg positioning guide is disclosed which is mounted in such a way that the In this positioning guide device, a pile is carried in a state in which one of a pair of right and left guide rods is extended and the other guide rod is contracted.

Japanese Patent Application Laid-Open No. 2006-283470

However, in the technique disclosed in Patent Literature 1, the width of the pair of left and right guide rods is wider than the width of the press-fitting machine, and interferes with the construction in close proximity to the structure. Since the guide rods are provided on both the left and right sides, the pile loading position is limited to the front of the chuck, and the pile cannot be carried in above the chuck. In addition, the angle at which the piles can be carried in is limited, making the work more difficult. Since the guide rod is long and a large moment is applied to the root of the guide rod due to the impact when the pile is inserted, the guide rod must have a fairly solid structure, resulting in a large and heavy press-in machine. There is a disadvantage that the length of the bar becomes longer because it is necessary to extend one bar more than the other when throwing in the stake. Depending on site conditions, such as narrow land or the presence of obstacles in the vicinity, it may not be possible to secure sufficient space to the side or front of the pile press-in machine. In such a case, in a positioning guide device in which a pair of left and right guide rods diverge forward as disclosed in Patent Document 1, the tip ends of the guide rods are opened to a considerable width. Therefore, when the pile press-in machine is running or working, the tip of the guide rod may hit the surroundings and interfere with the work.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pile press-in machine capable of smoothly guiding piles as close as possible to the press-in machine without interfering with the surroundings.

In order to achieve the above object, according to the present invention, there is provided a pile press-in machine for press-fitting a pile into the ground, wherein a chuck holding a pile to be press-fitted into the ground is pushed forward from one of the left and right lateral positions. Provided is a pile press -in machine, comprising an arm member extending along the length of the pile press-in machine .

This pile press-in machine WHEREIN: The range which can carry in a pile may extend above a chuck|zipper. Further, the arm member may be attachable to either the left or the right side of the chuck. Also, a receiving member may be provided for positioning the pile that has moved above the chuck. Further, the arm member may have a base portion fixed to the pile press-in machine, a raised portion rising forward from the base portion, and a horizontal portion attached in front of the raised portion. Further, a jet reel for supplying high-pressure water to a water jet nozzle attached near the tip of a pile that is press-fitted into the ground is provided, and the arm member is arranged at a position outside the width of the jet reel in plan view. It's okay to be.

According to the present invention, by guiding the pile to be press-fitted into the ground by the arm member, the pile can be smoothly carried into the chuck. Since the arm member is placed in a position that does not protrude outside the width direction of the pile press-in machine, it is suitable for sites where there is not enough space on the side of the pile press-in machine, such as narrow land or obstacles in the vicinity. However, the arm member does not get in the way when the pile press-in machine runs or works. In addition, the pile can be smoothly guided to the chuck as close as possible to the press-fitting machine without obstructing the surroundings.

1 is a side view of a pile press-in machine according to an embodiment of the present invention; FIG. 1 is a plan view of a pile press-in machine according to an embodiment of the present invention; FIG. 1 is a front view of a pile press-in machine according to an embodiment of the present invention; FIG. It is explanatory drawing of the procedure which carries in a pile to the chuck|zipper of the pile press-in machine which concerns on embodiment of this invention, and shows the state which raised the chuck|zipper. It is explanatory drawing of the procedure which carries in a pile to a chuck|zipper in the pile press-in machine which concerns on embodiment of this invention, and shows the state which carried the pile suspended by the wire into the pile press-in machine. It is explanatory drawing which shows the state which the both joint parts of the pile contact|abutted to the horizontal part of the arm member. FIG. 10 is an explanatory diagram showing a state in which the web portion of the pile is in contact with the horizontal portion of the arm member; It is explanatory drawing of the procedure which carries in a pile to a chuck|zipper in the pile press-in machine which concerns on embodiment of this invention, and shows the state which moved the pile above a chuck|zipper. FIG. 10 is an explanatory view showing a state in which both joint portions of the pile have moved upward from the chuck while sliding in contact with the inner surface of the left fixing portion from the arm member. FIG. 10 is an explanatory view showing a state in which the web portion of the pile moves upward from the arm member while sliding against the inner surface of the left fixing portion; FIG. 4 is an explanatory diagram of a procedure for carrying a pile into the chuck in the pile press-in machine according to the embodiment of the present invention, showing a state in which the pile is passed through the opening of the casing chuck; It is explanatory drawing of the procedure which carries in a pile to a chuck|zipper in the pile press-in machine which concerns on embodiment of this invention, and shows the state which press-fits the pile hold|gripped by the chuck|zipper into the ground. 1 is a side view of a pile press-in machine according to an embodiment of the invention with a jet reel; FIG. 1 is a front view of a pile press-in machine according to an embodiment of the invention with a jet reel; FIG. 1 is a side view of a pile press-in machine according to an embodiment of the present invention in which an arm member is mounted on a cylinder; FIG. 1 is a side view of a pile press-fitting machine according to an embodiment of the present invention in which an arm member is mounted on a leader mast; FIG. 1 is a side view of a pile press-in machine according to an embodiment of the present invention in which an arm member is mounted in front of a chuck frame via a support frame; FIG. 1 is a side view of a pile press-in machine according to an embodiment of the present invention in which an arm member is mounted in front of a leader mast via a support frame; FIG. 1 is a front view of a pile press-in machine according to an embodiment of the present invention configured to move an arm member left and right by rotating it above a chuck; FIG.

A pile press-in machine 1 according to an embodiment of the present invention will be described below with reference to the drawings. In the present specification and drawings, elements having substantially the same functional configuration are denoted by the same reference numerals, thereby omitting redundant description.

In addition, in this specification, the front is the direction in which the press-in construction is progressed by the pile press-in machine 1, and in FIGS. 1 and 2, the right side is the front and the left side is the rear. In FIG. 3, the direction away from the paper surface is the front, and the direction away from the paper surface is the rear. The left-right direction is determined when the direction of press-fitting is viewed from above. In FIG. 1, the upper side of the paper surface is the right side, and the lower side of the paper surface is the left side. In FIG. 2, the lower side is the right side and the upper side is the left side. In FIG. 3, the right side is the left side and the left side is the right side.

As shown in FIGS. 1 to 3, a plurality of clamps 11 are provided on both lower sides of a saddle 10, which is the main body of the pile press-in machine 1 according to the embodiment of the present invention. The clamp 11 grips the upper end of the existing pile P that has already been press-fitted, and fixes the saddle 10 to the upper portion of the pile P. In FIGS. 1 to 3, the upper end of the existing three piles P is clamped by the clamp 11 to fix the saddle 10, and in front of the three piles P, a new pile P has been press-fitted. state. Moreover, in the embodiment, as an example of the pile P, a U-shaped steel sheet pile is shown.

A slide frame 12 is provided on the upper portion of the saddle 10 so as to be slidable in the longitudinal direction with respect to the saddle 10 . On the slide frame 12, a leader mast 20 serving as a swivel base is configured to be rotatable with respect to the slide frame 12 around the central portion of the slide frame 12. As shown in FIG. The rotation of the leader mast 20 is performed by a rotation drive source (not shown) such as a motor provided on the bottom side of the leader mast 20, for example.

A chuck 25 capable of moving up and down along a lifting guide 21 is attached to the front of the reader mast 20 . The chuck 25 has a structure in which a casing chuck 27 is attached to a chuck frame 26 which is attached to a lifting guide 21 in front of the leader mast 20 so as to be able to move up and down. The entire chuck 25 (chuck frame 26 and casing chuck 27 ) moves up and down integrally with the expansion and contraction of the cylinder 30 .

The casing chuck 27 is rotatably mounted on the chuck frame 26 . The casing chuck 27 has a cylindrical shape as a whole, and a U-shaped opening 31 extending vertically through the casing chuck 27 is provided inside the casing chuck 27 . A pile P, which is a U-shaped steel sheet pile, is passed through the opening 31 .

A fixed claw 32 and a movable claw 33 are provided facing each other in the horizontal direction at the inner lower portion of the casing chuck 27 . The movable claw 33 is moved toward and away from the fixed claw 32 by a hydraulic cylinder (not shown). A pile P to be press-fitted is gripped by a fixed claw 32 and a movable claw 33 provided on the casing chuck 27 .

A funnel-shaped front guide surface 35 and a rear guide surface 36 are arranged on the upper portion of the casing chuck 27 so as to widen upward. These front guide surface 35 and rear guide surface 36 are formed on the chuck frame 26 . That is, the front surface of the chuck frame 26 forms a tapered rear guide surface 36 . As will be described later, the lower end of the pile P suspended by a crane or the like is guided by the front guide surface 35 and the rear guide surface 36, so that the pile P is smoothly passed through the opening 31 of the casing chuck 27. Become so. The sides of the chuck frame 26 are also tapered. The opening 31 of the casing chuck 27 is also circumferentially tapered.

An upper portion of the chuck frame 26 is provided with arm members 41 arranged on the left and right sides of the chuck 25 by being inserted into and fixed to a pair of left and right fixing portions 40 . The left and right fixing portions 40 are provided outside the opening 31 of the casing chuck 27 on the left and right sides in plan view, but within a range not exceeding the lateral width L of the pile press-fitting machine 1 . In the pile press-in machine 1 of this embodiment, the width of the saddle 10 is the largest.

The arm member 41 has a base portion 42 to be inserted into the fixed portion 40 , a rising portion 43 rising forward from the base portion 42 , and a horizontal portion 44 attached in front of the rising portion 43 . The arm member 41 can be arranged on either the left side or the right side of the chuck 25 by using the left and right fixing portions 40 . In FIG. 2, the arm member 41 indicated by a solid line is placed on the left side of the chuck 25 by being inserted into the left fixing portion 40, and the arm member 41 indicated by a dashed line is the right fixing portion. 40 is placed on the right side of the chuck 25 .

By inserting the arm member 41 into the left fixing portion 40 like the arm member 41 indicated by the solid line in FIG. In front of the chuck 25 , the horizontal portion 44 is arranged at a position higher than the fixed portion 40 . Similarly, by inserting the arm member 41 shown by the dashed line in FIG. 2 into the right fixing portion 40, the arm member 41 is arranged to extend forward from the right side position of the chuck 25. be. At the front position of the chuck 25 , the horizontal portion 44 is arranged at a position higher than the fixed portion 40 .

By inserting the chuck 25 into the left and right fixing portions 40 in this manner, either the left side or the right side of the chuck 25 can be selected and can be attached to either side in the same manner. Further, the arm members 41 arranged forward from one of the left and right side positions are arranged within a range not exceeding the lateral width L of the pile press-in machine 1 in plan view at any position.

A receiving member 50 formed in a concave shape is attached between the left and right fixed portions 40 so that the central portion thereof is recessed rearward. The receiving member 50 is arranged at a position where the concave central portion is adjacent to the rear side of the opening 31 of the casing chuck 27 in plan view.

Next, in the pile press-in machine 1 according to the embodiment of the present invention configured as described above, one pile P is placed in front of the existing three piles P as shown in FIGS. The steps from the end of press-fitting to the start of press-fitting by carrying in the next new pile P will be described in order. As an example, the arm member 41 is inserted into the left fixing portion 40 as shown by the solid line in FIG. do.

First, after one pile P has been press-fitted, the movable claw 33 is separated from the fixed claw 32 by a hydraulic cylinder (not shown) in the lower portion of the casing chuck 27, and the pile P that has been press-fitted is gripped. is released. Then, as shown in FIG. 4, the entire chuck 25 (chuck frame 26 and casing chuck 27) is lifted by the extension operation of the cylinder 30, and the fixed claws 32 and the movable claws 33 under the casing chuck 27 finish press-fitting. The chuck 25 as a whole is moved to a position above the upper end of the pile P. As a result, the chuck 25 as a whole becomes movable in the front-rear direction above the pile P. As shown in FIG.

Then, a new pile P to be press-fitted into the ground next is suspended by a crane or the like by a wire 51 and carried into the pile press-in machine 1 . Since the new pile P carried into the pile press-in machine 1 is in a state of being suspended by the wire 51 in this way, there is a risk that it will sway due to inertia or the influence of wind during transfer. Therefore, when carrying in, as shown in FIG. 5, the pile P suspended by the wire 51 is brought into contact with the horizontal portion 44 of the arm member 41 arranged forward from the left side position of the chuck 25 . to stop the swaying motion of the pile P.

In this case, since the arm member 41 is arranged to extend from the left side position of the chuck 25 to the front, the stake P is brought into contact with the horizontal portion 44 of the arm member 41 in front of the chuck 25 to restrain the rocking movement. You can do the work that makes you Further, since the horizontal portion 44 of the arm member 41 is arranged at a relatively high position in front of the chuck 25 , when the pile P is brought into contact with the horizontal portion 44 of the arm member 41 in this way, the wire 51 is used to There is no need to lower the pile P in the suspended state more than necessary.

The arm member 41 is arranged from the left side of the chuck 25 to a position extending forward. 1 and 2, from the right side of the pile press-in machine 1, the pile P is brought into contact with the arm member 41 in the range X extending from the tip of the arm member 41 to the upper side of the chuck 25. It is possible to perform work to stop the rocking movement by bringing it into contact. In this way, if the range of the loading position of the pile P extends to above the chuck 25, the pile P can be smoothly guided to the chuck 25 as close as possible to the press-in machine 1, and an obstacle exists in narrow land or nearby. There is an advantage that it does not interfere with the surroundings even when doing so.

When the pile P suspended by the wire 51 is brought into contact with the horizontal portion 44 of the arm member 41, if the pile P is a U-shaped steel sheet pile, the shape of the pile P may be as shown in FIG. , the joint portions of the pile P are in contact with the horizontal portion 44 of the arm member 41, or the web portion of the pile P is in contact with the horizontal portion 44 of the arm member 41 as shown in FIG. Either.

After the swinging motion of the pile P suspended by the wire 51 is restrained, the pile P is moved above the chuck 25 while being suspended by the wire 51 as shown in FIG. In this case, the pile P may be moved backward by operating with a crane or the like to move the pile P above the chuck 25, or the slide frame 12 may be slid forward with respect to the saddle 10, The chuck 25 may be moved below the pile P. If the operation of moving the pile P backward by operating a crane or the like and the operation of sliding the slide frame 12 forward with respect to the saddle 10 are performed simultaneously, the pile P can be moved above the chuck 25 more quickly and in a short time. can be moved.

When the pile P is moved above the chuck 25 in this way, the pile P, which is a U-shaped steel sheet pile, has a shape such that both joint portions of the pile P are located on the left side of the arm member 41 as shown in FIG. 10, the web portion of the pile P contacts the inner surface of the fixing portion 40 on the left side of the arm member 41, as shown in FIG. Either it moves above the chuck 25 while sliding.

In this way, the pile P moved upward from the chuck 25 contacts the receiving member 50 mounted between the left and right fixed portions 40, and is guided to the central portion of the receiving member 50 formed in a concave shape. Thus, the pile P moved above the chuck 25 is necessarily moved directly above the opening 31 of the casing chuck 27 . In this case, the lower end of the pile P that has moved above the chuck 25 may be guided by a tapered rear guide surface 36 formed on the front surface of the chuck frame 26 .

Then, the casing chuck 27 of the chuck 25 rotates appropriately according to the direction of the pile P that has moved right above the opening 31 of the casing chuck 27. The direction of the letter-shaped opening 31 is adjusted as appropriate. That is, for example, when both joint portions of the pile P face left and the web portion faces right, the casing chuck 27 rotates so that the fixed claw 32 is on the right side and the movable claw 33 is on the left side. Further, for example, when both joint portions of the pile P face right and the web portion faces left, the casing chuck 27 rotates so that the fixed claw 32 is on the left and the movable claw 33 is on the right. In this way, the direction of the pile P that has moved right above the opening 31 of the casing chuck 27 and the direction of the U-shaped opening 31 formed inside the casing chuck 27 in plan view are made to match. (In FIG. 10, the opening 31 does not rotate because the direction of the opening 31 matches the direction of the pile P.)

Next, as shown in FIG. 11 , the chuck 25 is raised with respect to the pile P suspended by the wire 51 and the pile P is passed through the opening 31 of the casing chuck 27 . In this case, the pile P may be lowered by operating a crane or the like to pass the pile P through the opening 31 of the casing chuck 27, or the cylinder 30 may be extended in front of the leader mast 20. , the pile P may be passed through the opening 31 of the casing chuck 27 by raising the chuck 25 along the elevation guide 21 . If the operation of lowering the pile P by operating a crane or the like and the operation of raising the chuck 25 by extending the cylinder 30 are performed at the same time, the pile P can be passed through the opening 31 of the casing chuck 27 more quickly and in a short time. can be done. When the pile P is passed through the opening 31 of the casing chuck 27 in this way, the lower end of the pile P is guided by the front guide surface 35 and the rear guide surface 36, so that the pile P is pushed through the opening of the casing chuck 27. It is smoothly passed through the portion 31 .

After the pile P is passed through the opening 31 of the casing chuck 27 in this way, the movable claw 33 is moved toward the fixed claw 32 by a hydraulic cylinder (not shown) below the casing chuck 27, and the wire 51 The suspended stake P is gripped by the chuck 25 .

After the suspension by the wire 51 is released, as shown in FIG. The gripped pile P is pressed into the ground within the movable range of the cylinder 30 . After the pile P is pressed into the ground within the movable range of the cylinder 30, the movable claw 33 is separated from the fixed claw 32 by a hydraulic cylinder (not shown) below the casing chuck 27, and the pile P is temporarily gripped. be released. The extension operation of the cylinder 30 raises the chuck 25 along the elevation guide 21 . Then, at the position where the chuck 25 is lifted, a hydraulic cylinder (not shown) moves the movable claw 33 closer to the fixed claw 32 at the lower portion of the casing chuck 27, and the pile P is gripped by the chuck 25 again. . After that, the same operation is repeated, and the pile P carried into the pile press-in machine 1 is pressed into the ground to a predetermined depth.

As described above, according to the pile press-in machine 1 according to the embodiment of the present invention, when the pile P is carried into the pile press-in machine 1, the pile P suspended by the wire 51 of a crane or the like is attached to the arm member 41. By contacting the horizontal portion 44, the swinging motion of the pile P can be restrained. In this case, as shown in FIGS. 1 and 2, if the pile P is carried in from the right side of the pile press-in machine 1 in the range X extending from the tip of the arm member 41 to above the chuck 25, the pile P can be moved into the arm. It can be brought into contact with the member 41 to stop the rocking movement. Therefore, there is an advantage that the pile P can be smoothly guided to the chuck 25 as close as possible to the press-in machine 1, and that it does not interfere with the surroundings even when the land is narrow or there are obstacles in the vicinity. Further, the pile P is slid along the arm member 41 while being suspended by the wire 51, and is guided to the central portion of the receiving member 50 attached between the left and right fixed portions 40. , to just above the opening 31 of the casing chuck 27 . Therefore, when the pile P is thrown into the chuck 25, there is no need for a person to stand nearby to adjust the throwing position.

In addition, since the arm member 41 is arranged within a range that does not exceed the width L of the pile press-in machine 1 in plan view, the side of the pile press-in machine 1 can be used even if there are obstacles such as narrow land or nearby obstacles. The arm member 41 does not become an obstacle when the pile press-in machine 1 travels or works even at a site where a sufficient space is not available. For this reason, it is possible to smoothly carry out press-in work even under conditions where the land is narrow or there are obstacles in the vicinity.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to such examples. It is obvious that a person skilled in the art can conceive various modifications or modifications within the scope of the technical idea described in the claims, and these are also within the technical scope of the present invention. be understood to belong to

For example, in the above embodiment, the arm member 41 is arranged forward from the left side position of the chuck 25 by inserting it into the left fixing portion 40 like the arm member 41 indicated by the solid line in FIG. 2, by inserting the arm member 41 into the right fixing portion 40, the arm member 41 can be arranged forward from the right side position of the chuck 25. Similar effects can be obtained. The arm member 41 can be arbitrarily exchanged between the left side and the right side of the chuck 25 according to various conditions such as the site situation and wind direction. The direction in which the pile P is brought to the press-in machine 1 is determined by the arrangement of the crane and the pile P, but this can be dealt with by being able to select either the left or the right.

Further, when the pile P is pressed into the ground by the pile press-in machine 1, a water jet construction method using high-pressure water (water jet) together is known as a countermeasure against hard ground and the like. As shown in FIGS. 13 and 14, a jet reel (winding mechanism) 55 is attached to the pile press-in machine 1 for performing the water jet construction method. Then, a water jet hose 56 fed out from a jet reel 55 supplies high-pressure water to a water jet nozzle (not shown) attached near the tip of the pile P to be press-fitted into the ground. By reducing , the pile P is efficiently press-fitted into the ground.

In the pile press-in machine 1 equipped with such a jet reel 55, for example, when the pile press-in machine 1 is transported, the jet reel 55 for winding the water jet hose 56 is attached to the chuck 25 as indicated by the dashed line in FIG. It may drop all the way to the top. Therefore, it is desirable to arrange the arm member 41 at a position outside the lateral width M (shown in FIG. 14) of the jet reel 55 in plan view. Although FIG. 14 shows the pile press-in machine 1 viewed from the front, the relation between the width M of the jet reel 55 and the arrangement of the arm member 41 is the same in plan view. In this way, if the arm member 41 is positioned outside the width M of the jet reel 55 when viewed from the front (plan view), when the jet reel 55 is lowered, the jet Since the reel 55 is housed inside the arm member 41, the jet reel 55 does not collide with the arm member 41.例文帳に追加As a countermeasure against hard ground, etc., the water jet construction method using high pressure water (water jet) was exemplified. Other high-pressure fluids, such as gaseous mixed fluids and high-pressure chemicals, may be supplied. Similarly, for the jet reel that winds the hose that supplies the high-pressure fluid, if the arm member 41 is arranged at a position outside the width of the jet reel, the arm member will move when the jet reel is lowered. You can enjoy the benefits of not hitting 41.

The arm member 41 may be attached to the upper part of the chuck frame 26, or may be attached to the mast 20 or the cylinder 30, for example. Further, the arm member 41 is not limited to a structure in which it is inserted into the fixing portion 40 and fixed. In the above, a U-shaped steel sheet pile is shown as an example of the pile P, but the present invention can also be applied to a pile press-in machine for press-fitting hat-shaped steel sheet piles, concrete sheet piles, steel pipe piles, steel pipe sheet piles, and the like. The arm member 41 does not necessarily need to be arranged at a position higher than the fixed part 40 , and may be at the same height as the fixed part 40 or at a position lower than the fixed part 40 .

For example, as shown in FIG. 15, if the arm member 41 is mounted on the cylinder 30, the arm member 41 is at a high position. Since the pile P and the arm member 41 can be seen even from behind the press-fitting machine 1, they are easy to visually recognize and work is easy. Also, as shown in FIG. 16, the arm member 41 is mounted on the reader mast 20, and as shown in FIG. The configuration, as shown in FIG. 18, in which the arm member 41 is mounted in front of the leader mast 20 via an appropriate support frame 60, is an embodiment of the present invention.

Moreover, although the form provided with the right-and-left pair of fixing|fixed part 40 which fixes the arm member 41 was shown, providing the right-and-left pair of fixing|fixed part 41 is not necessarily essential. For example, in addition to changing the arm member 41 to the left and right, a method of changing the left and right by rotating or the like is conceivable. For example, as shown in FIG. 19, the base portion 42 of the arm member 41 is rotatably attached to the upper portion of the chuck 25, and the arm member 41 (horizontal portion 44) is rotated above the chuck 25. may be configured to move left and right. Also, an example of attaching the receiving member 50 for positioning the pile that has moved above the chuck between the left and right fixing portions 40 has been shown, but the receiving member 50 may be attached to another position. does not have to be set.

In addition, if the arm member 41 is provided with an elastic body such as resin or rubber or a shock absorbing collar at the portion where the pile P hits, effects such as noise reduction and shock reduction can be expected. Furthermore, the shape of the front guide surface 35 and the rear guide surface 36 formed on the upper portion of the casing chuck 27 may be polygonal, mortar, etc., in addition to the funnel shape. If the front guide surface 35 and the rear guide surface 36 are also provided with an elastic body such as resin or rubber, or an impact absorbing collar, effects such as noise reduction and impact reduction can be expected. In the pile press-in machine 1 of this embodiment, the saddle 10 has the largest width, but there is also a pile press-in machine 1 in which the chuck 25 (chuck frame 26) has the largest width. In this case, the arm member 41 is arranged within a range not exceeding the lateral width L of the pile press-in machine 1 (that is, the lateral width of the chuck 25 (chuck frame 26)) in plan view.

INDUSTRIAL APPLICABILITY The present invention can be applied to a pile press-in machine that presses a pile into the ground and pulls the pile out of the ground.

1 Pile Press-In Machine P Pile 10 Saddle 11 Clamp 12 Slide Frame 20 Leader Mast 21 Lifting Guide 25 Chuck 26 Chuck Frame 27 Casing Chuck 30 Cylinder 31 Opening 32 Fixed Claw 33 Movable Claw 35 Front Guide Surface 36 Rear Guide Surface 40 Fixed Part 41 Arm member 42 base 43 rising portion 44 horizontal portion 50 receiving member 51 wire 55 jet reel (winding mechanism)
56 Water jet hose L Width of pile press-in machine M Width of jet reel

Claims (6)

A pile press-in machine for press-fitting a pile into the ground,
Equipped with an arm member extending forward from one of the left and right sides of the chuck for gripping the pile to be pressed into the ground ,
The pile press-in machine, wherein the arm member is arranged in a range not exceeding the width of the pile press-in machine in plan view . 2. The pile press-in machine according to claim 1, wherein the range into which the pile can be carried extends to above the chuck. The pile press-in machine according to any one of claims 1 and 2 , wherein the arm member can be attached to the chuck on either the left or right side. The pile press-in machine according to any one of claims 1 to 3 , further comprising a receiving member for positioning the pile moved above the chuck. Claim 1 , wherein the arm member has a base portion fixed to the pile press-in machine, a rising portion rising forward from the base portion, and a horizontal portion attached in front of the rising portion. 5. The pile press-in machine according to any one of -4 . Equipped with a jet reel that winds a hose that supplies high-pressure fluid to a nozzle attached near the tip of a pile that is pressed into the ground,
The pile press-in machine according to any one of claims 1 to 5 , wherein the arm member is arranged at a position outside the width of the jet reel in plan view.

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