JP2012188860A - Vibration hammer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration hammer device that secures sufficient gripping force for pile driving, is made compact by enabling a pile to be gripped and released by making claws of a chuck device detachable, and facilitates pile driving operation in a narrow work place.SOLUTION: There is provided the vibration hammer device including a chuck device (100) which grips the pile from horizontal-direction sides, and having a base (1) and a shaker (2). The chuck device (100) has a fixed-side gripping claw (15) and a movable-side gripping claw (14) which is driven to move toward and away therefrom. An arm lever (19) and a hydraulic cylinder (18) which drive the movable-side gripping claw (14) are fitted to the base (1), and the fixed-side gripping claw (15) and movable-side gripping claw (14) are fitted to be detached from above the base (1). The shaker (2) is provided with a suspender fitting part (22) to which a suspender of a work machine is fitted.

Description

  The present invention relates to a vibratory hammer device, and more particularly, in a vibratory hammer device capable of driving a pile by gripping the pile from the horizontal direction, and sufficiently securing a gripping force for driving the pile, even in a narrow work area. The present invention relates to a vibratory hammer device that is reduced in size so that it can be used.

  For example, the pile driving work may be performed in a place where the height of the upper work space is limited, such as under a bridge. In such a place, it is difficult to perform a pile driving work by using a large crane or the like and holding the upper end of the pile with a suspended vibro hammer. Therefore, it is conceivable to perform the pile driving work by gripping the pile from the horizontal direction (lateral direction). As a pile driving device that performs such work, there is a pile driving device described in Patent Document 1, for example.

  The pile driving device described in Patent Document 1 uses a pile driving device provided with a vibratory hammer having a vertical chuck device for a pile handle that has been used in the past and is attached to the front of a hydraulic excavator body that is a base machine. The pile side is provided with a chucked portion to be gripped by the vertical chuck device and a horizontal chuck device for side grip of the pile provided eccentrically with respect to the chucked portion, whereby a long steel sheet pile or the like When driving a pile, or when piling at a work site where the height of the front cannot be increased, work can be performed with good workability and work efficiency.

JP-A-6-10349

  The horizontal chuck device for the side grip of the pile is to grip and hold a steel sheet pile or H-shaped steel web between a fixed frame and a rotating frame, and the gripping force is performed by a fastening bolt and a nut. It is. However, gripping piles from the horizontal direction requires several tons or dozens of tons of gripping force. With gripping force using fastening bolts and nuts, There is a problem that the gripping force is insufficient.

The problem can be solved by using hydraulic pressure in the chuck device. A chuck device using hydraulic pressure is also described in Patent Document 1 [0007] [0008] and FIG. This chuck device is provided with a chucking claw at the rod end of a pair of hydraulic cylinders arranged opposite to each other, and for chucking a steel sheet pile or H-shaped steel web with the chucking claw. It is necessary to secure a sufficient stroke of the rod of the hydraulic cylinder so that the gap between the claws is sufficiently opened. For this reason, it is unavoidable to increase the size of the chuck device.
However, in many places where the height of the upper working space is limited, the area that can be used for work is narrow, and thus there is a problem that a large chuck device cannot be used.

  Moreover, the pile driving device described in Patent Document 1 uses a hydraulic excavator for the base machine. Since the hydraulic excavator has a joint between the boom and the arm and between the arm and the tip attachment, it is very difficult to vertically lower the vertical chuck device at the tip, and in some cases as the pile is lowered The base machine had to be moved, so workability was not good.

  The present inventor worked on the development of a device that solves the above-mentioned problems, and at work sites that are restricted by the height of the upper space by providing a chuck device that uses an actuator, such as a hydraulic chuck device that grips a pile from the horizontal direction. It has been found that the entire device can be reduced in size by making the pile driving work easier and by holding and releasing the chuck claw of the chuck device. In addition, as a structure that does not need to transmit vibration from the arm or boom side of the base machine (work machine), the pile driving work can be performed simply by hanging it with a flexible wire rope without holding the device. It was found that workability could be improved.

(Object of the present invention)
An object of the present invention is a vibratory hammer device that facilitates pile driving work at a work site that is restricted by the height of the upper space by including a chuck device including an actuator that grips the gripping force of the pile from the horizontal direction. The gripping force for pile driving is sufficiently secured, and the chucking claw of the chuck device provided with the actuator can be attached and detached so that the pile is gripped or released, and the entire device is reduced in size and narrowed. An object of the present invention is to provide a vibratory hammer device that facilitates pile driving work at a work site.

  In addition to the above object, another object of the present invention is a structure that does not need to transmit vibration from the arm or boom side of a base machine (work machine), for example, a wire having flexibility without gripping the device. An object of the present invention is to provide a vibratory hammer device with improved workability by enabling a pile driving operation only by hanging with a rope.

Means taken by the present invention to solve the above problems are as follows.
(1) The present invention
It is a vibratory hammer device equipped with a chuck device for gripping a pile from the horizontal direction side when pile driving,
A base body provided with the chuck device;
A shaker attached to the upper surface side of the base;
Have
The chuck device includes:
A fixed claw element;
A movable claw element driven in a direction to advance and retreat toward the fixed claw element;
Have
An arm lever that drives the movable claw element and an actuator that drives the arm lever are attached to the base body,
The fixed claw element and the movable claw element are attached so as to be detachable from the upper side of the base body.
Either one or both of the base body and the shaker is provided with a hanging tool mounting portion for mounting the hanging tool of the work machine.
Vibro hammer device.

(2) The present invention
The movable claw element is attached to the base on the side facing the fixed claw element side so as to advance and retreat toward the fixed claw element,
The arm lever engages an engagement element provided on the operating point side of the arm lever and an engagement element of the movable claw element so as to move the movable claw element in a direction away from the fixed blade element. And
The movable claw element is pushed out by the pushing portion on the action point side of the arm lever, moves toward the fixed claw element, and can hold the pile.
It is the vibro hammer apparatus of said (1).

(3) The present invention
When the base has a pile insertion space portion through which the pile is inserted, and the pile insertion space portion grips the steel sheet pile or H-shaped steel with a chuck device, the space portion shape can be accommodated with either a steel sheet pile or H-shaped steel. A contact member that can be brought into contact with the edge of the flange of the steel sheet pile or H-shaped steel gripped by the chuck device on the back side opposite to the insertion slot in the pile insertion space. ing,
The vibratory hammer device according to (1) or (2).

  The term “actuator” in the present invention means a device that mechanically moves or controls an object using hydraulic pressure, pneumatic pressure, or electricity. Examples thereof include a cylinder, a pneumatic cylinder, and an electric cylinder (electric actuator).

(Function)
The operation of the vibratory hammer device according to the present invention will be described.
When the vibratory hammer device is first attached to the pile, the movable claw element and the fixed claw element of the chuck device have been removed from the base in advance, and it is suspended via a wire rope, chain, etc. by a crane mounted on the truck. ing.

  The vibratory hammer device from which the movable side gripping claw and the fixed side gripping claw are removed is suspended and placed on the ground so that the pile insertion space is fitted into the pile. In this state, the movable claw element and the fixed claw element are attached to the base. At this time, the movable claw element and the fixed claw element are left loose without gripping the pile by driving the movable claw element with an actuator.

  Wind the wire rope and raise the vibratory hammer device to the required height along the pile. The actuator is driven, and the vibrator hammer device is mounted so that the pile is gripped from the horizontal direction by sandwiching the pile between the movable claw element and the fixed claw element. Since the pile is gripped by a chuck device driven by an actuator such as a hydraulic cylinder, a sufficient gripping force can be obtained and the gripping force can be stabilized more than a tightening bolt and nut tightened manually by an operator, for example. ing.

  Then, the wire rope is fed out and loosened to operate the shaker so that the entire load of the vibratory hammer device is applied to the pile. As a result, a sufficient load and vibration in the driving direction are applied to the pile, the pile is driven, and the vibrator hammer device is also lowered with the pile. In addition, since the wire rope is further unwound in accordance with this, the workability is high, unlike the case where the arm and boom of the working machine are operated and followed as in the conventional case.

  When the pile is driven in as described above and the vibratory hammer device attached to the pile descends to a required height close to the ground, the shaker is stopped and the gripping of the pile by the chuck device is released.

  Then, the wire rope is wound up, the vibratory hammer device is raised along the pile, and the pile is sandwiched between the movable claw element and the fixed claw element in the same manner as described above, and attached to the required height of the pile. As described above, the vibratory hammer device is balanced between the movable claw element, the gripping part of the fixed claw element, and the pile because the base body is substantially horizontal and balanced as described above. It is possible to increase without causing a large resistance due to the above.

  When the upper end of the pile is located near the ground when the vibratory hammer device is lowered to the ground, the vibratory hammer device is raised after welding the next pile if necessary. Moreover, when finishing driving of the pile in the location, the vibratory hammer apparatus is raised as it is and extracted from the pile. Then, the same operation as described above is performed, and this process is repeated as many times as necessary to perform the pile driving operation.

  The movable claw element is attached to the base so that the movable claw element can move forward and backward toward the fixed claw element on the side opposite to the fixed claw element side. The arm lever includes an engagement element provided on the operating point side of the arm lever and a movable claw. The movable claw element is moved in a direction away from the fixed blade element by engaging with the engagement element of the element, and the movable claw element is hardly or hardly subjected to a load due to the engagement. In the state where it does not act, it is pushed out by the pushing part on the action point side of the arm lever and moves toward the fixed claw element, so that the pile can be gripped when gripping the pile with the fixed claw element and the movable claw element In addition, a large load is not applied to each engagement element provided in the arm lever and the movable claw element, and there is no possibility of damaging them. Also, the work of loosening the pile holding by separating the fixed claw element and the movable claw element can be performed without any trouble.

  In addition, when the pile insertion space portion grips the steel sheet pile or H-shaped steel with the chuck device, it has a space shape that can be accommodated by either the steel sheet pile or H-shaped steel, and the pile insertion space portion has a chuck. On the side opposite to the side where the device is provided, a steel sheet pile or an abutting member that can be brought into contact with the edge of the flange of the H-shaped steel Since both piles of H-shaped steel can be used, even in a work site where each pile is built, it is not necessary to replace the vibratory hammer device with a dedicated type each time the piles are replaced. In addition, with the chuck device gripping the pile web, the abutment member abuts against the edge of the steel sheet pile or the flange of the H-shaped steel, so that the posture of the device is kept horizontal, so that the vibration of the shaker Acts more effectively.

The present invention has the following effects.
(A) Since the present invention grips the pile with a chuck device driven by an actuator, the gripping force is sufficient and stable, and the earthquake generator is attached to the hammer side instead of the arm or boom side of the work machine. Therefore, the pile driving operation can be performed only by suspending it with a wire rope, a chain or the like without holding the hammer on the arm or boom side of the work machine. Therefore, when the vibratory hammer device is lowered, the wire rope, the chain or the like may be drawn out, and it is not necessary to move the arm or boom so that the workability is high.

(B) The present invention is a combination of an arm lever and an actuator, and the fixed claw element and the movable claw element can be removed, so that the entrance of the pile is compared with the conventional structure in which the actuators are arranged facing each other. The width of the machine on the side can be made narrower and the device can be miniaturized. Moreover, since the fixed claw element and the movable claw element can be attached and detached from the upper side, the replacement work for the pile can be performed relatively easily and efficiently.

(C) The present invention does not apply a large load to each engaging element provided in the arm lever and the movable claw element even when the pile is gripped by the fixed claw element and the movable claw element. There is no risk of damage. Also, the work of loosening the pile holding by separating the fixed claw element and the movable claw element can be performed without any trouble.

(D) Since the present invention can be driven by either piles of steel sheet piles or H-shaped steels, it is necessary to replace the vibratory hammer device with a dedicated type each time the piles are changed even at work sites where the piles are built together. There is no, and workability is high. In addition, the abutment member abuts against the edge of the steel sheet pile or H-shaped steel flange while the chuck device grips the pile web, so that the orientation of the device is kept horizontal. Works more effectively.

The perspective view which shows one Embodiment of the vibratory hammer apparatus which concerns on this invention. The disassembled perspective view which shows the structure of the base | substrate which comprises a vibratory hammer apparatus. The top view of a base | substrate. The side view of a base | substrate. The operation of the vibratory hammer device is shown, (a) is a plan view explanatory diagram in a state of gripping an H-shaped steel, (b) is a plan view explanatory diagram of a state in which a steel sheet pile is gripped. Explanatory drawing which shows the use condition of a vibratory hammer apparatus.

Embodiment
The present invention will be described in detail based on the embodiments shown in the drawings.
Please refer to FIG. 1 to FIG.

  The vibratory hammer apparatus A includes a base body 1 having a chuck device 100 and a shaker 2 attached to the base body 1. For example, the shaker 2 rotates an eccentric weight (weight) with a motor to generate a vibration force, and applies vibration for pile driving to the base body 1 to which the shaker 2 is attached. The chuck device 100 includes gripping claw mounting portions 11 and 12, a pile insertion space portion 13, a movable side gripping claw 14, a fixed side gripping claw 15, a hydraulic cylinder 18, and an arm lever 19 which will be described later.

  The base body 1 is formed to have a weight necessary and sufficient for erection of the pile when the seismic machine 2 is attached. The base body 1 has a frame 10 that is substantially U-shaped in a plan view and is formed by assembling and welding iron plates. The frame 10 is formed with gripping claw attaching portions 11 and 12 in parallel with a required interval so as to protrude to the front side (right side in FIG. 2). Between the gripping claw attaching portions 11 and 12, a pile insertion space portion 13 for entering through a pile such as a steel sheet pile or H-shaped steel is formed. In the following description, the front, rear, left, and right directions are based on the description of the direction shown on the upper side of FIG.

  An abutting member 130 is provided to be fixed to the frame 10 on the rear side of the pile insertion space 13, that is, on the back side opposite to the insertion slot (the right opening side in FIG. 2) in the pile insertion space 13. The contact member 130 is formed such that the front contact surface 131 is a flat surface and the contact surface 131 is in the vertical direction. When the steel sheet pile or the H-shaped steel is gripped by the movable side gripping claws 14 and the fixed side gripping claws 15 which will be described later, the abutting member 130 causes the side portions (outer surfaces and edges of the flanges) of the piles to contact the surface 131. Thus, the posture of the vibratory hammer apparatus A can be stabilized in a horizontal state as shown in FIG. Moreover, the shape and size of the pile insertion space 13 are formed so that either a steel sheet pile or H-shaped steel gripped by the movable side gripping claws 14 and the fixed side gripping claws 15 can be accommodated.

  On the upper surface of each gripping claw mounting portion 11, 12, mounting bolts 110, 120 are erected substantially at the center. Square bar-shaped guide members 111 and 112 are fixed in parallel to each other at a predetermined interval on the front and rear sides with the mounting bolt 110 on the upper surface of the gripping claw mounting portion 11 interposed therebetween. A washer receiver 113 having a diameter slightly larger than that of the mounting bolt 110 and a required height is formed at the base of the mounting bolt 110. Similarly, the rectangular bar-shaped guide members 121 and 122 are fixed in parallel to each other at a predetermined interval on the front and rear sides with the mounting bolt 120 on the upper surface of the gripping claw mounting portion 12 interposed therebetween.

  In FIG. 2, the left gripping claw mounting portion 11 is equipped with a movable gripping claw 14 that moves when gripping a pile, and the right gripping claw mounting portion 12 does not move when gripping a pile. The fixed side gripping claws 15 are fixed. The structure and mounting structure of the movable gripping claws 14 and the fixed gripping claws 15 will be described later.

  A shaker mounting member 16 for fixing the shaker 2 is fixed to a substantially central portion of the upper surface of the frame 10. The shaker mounting member 16 has a structure in which a disk-shaped mounting plate 160 is fixed by a large number of leg plates 161. A circular hole (not shown) is provided at the center of the mounting plate 160, and a number of bolt holes 162 are formed around it.

  Further, the position of the shaker mounting member 16 is different from the gripping claws (positions where the gripping surfaces 141 and 151 are close to each other) gripping the pile by the movable gripping claws 14 and the fixed gripping claws 15 described later. 14 and 15 are provided in a direction that intersects the pile at a right angle with the direction in which the pile is fastened. The angle at which the directions intersect is not particularly limited.

  In addition, a disk-shaped attachment member 21 is provided at the lower part of the shaker 2, and the shaker 2 is attached to the shaker attachment member 16 by fixing the attachment member 21 with bolts 20. Yes. In addition, on the upper part of the earthquake shaker 2, a hanging tool attaching portion 22 for attaching the hanging tool 30 at the tip of the wire rope 3 of the working machine is formed.

  A space portion 17 penetrating in the left-right direction is formed in an intermediate portion in the thickness direction of the frame 10. In the space portion 17, a hydraulic cylinder 18 is disposed in the left-right direction, and a base end portion of the cylinder is attached to the frame 10 by a shaft rod 180 so as to be rotatable in the horizontal direction. An arm lever 19 is attached to one side of the space 17 in the left-right direction (left side in FIG. 2). The arm lever 19 is attached to the front portion of the arm lever 19 so as to be rotatable in the horizontal direction with respect to the frame 10 by the shaft rod 190.

  A rod tip of the hydraulic cylinder 18 is attached to the base end of the arm lever 19 by a shaft pin 181 so as to be rotatable in the horizontal direction. Further, an advancing / retreating portion 191 is formed near the tip of the arm lever 19 so that one side protrudes outward from the edge of the frame 10 and the other side protrudes toward the inner side surface 114 of the gripping claw mounting portion 11. A side of the advancement / retraction portion 191 that protrudes toward the inner side surface 114 of the grip claw attachment portion 11 is a pressing surface 192.

  Further, an engagement hole 193 is formed on the upper surface of the portion protruding outward from the edge of the frame 10 to engage and engage an engagement pin 147 of the movable gripping claw 14 described later. With this structure, when the rod of the hydraulic cylinder 18 expands and contracts, the arm lever 19 rotates about the shaft rod 190, and the advancing / retracting portion 191 moves forward and backward in the width direction of the frame 10.

As described above, the movable gripping claw 14 as the movable claw element is mounted on the left gripping claw mounting portion 11, and the fixed gripping claw 15 as the fixed claw element is mounted on the right gripping claw mounting portion 12. It is fixed.
The movable gripping claw 14 has a substantially rectangular parallelepiped claw block 140. A large number of protrusions 142 are provided on the entire gripping surface 141 of the claw block 140, and the opposite side is a receiving surface 140 a that is pressed by the pressing surface 192 of the advance / retreat portion 191. On the upper surface of the claw block 140, a plate-like slide member 143 that is formed in a long shape with substantially the same width as the claw block 140 is fixed. The slide member 143 is provided with reinforcing portions 144 and 144a on both sides in the width direction.

  The slide member 143 is fixed to the claw block 140 via reinforcing portions 144 and 144a. Between the reinforcing portions 144 and 144a of the claw block 140, an inverted U-shaped handle 145 is provided. A rectangular slot 146 is formed at the center of the portion of the slide member 143 that protrudes from the claw block 140. An engagement pin 147 that is inserted into and engaged with an engagement hole 193 formed in the arm lever 19 is fixed below the narrow end of the slide member 143 near the tip.

  The movable gripping claw 14 inserts the engagement pin 147 into the engagement hole 193 of the arm lever 19, and the slide member 143 is slidably fitted between the guide members 111 and 112 of the gripping claw mounting portion 11, and the long hole 146 is formed. The mounting bolt 110 is fitted into the mounting bolt 110, and a rectangular washer 148 is fitted into the mounting bolt 110. Finally, a nut 149 is screwed onto the mounting bolt 110. At this time, the washer 148 comes into contact with the upper surface of the washer receiver 113 at the base of the mounting bolt 110 and stops. Therefore, the washer 148 does not restrain the slide member 143 and the slide member 143 can slide even when the nut 149 is tightened.

  According to this structure, when the advancing / retreating portion 191 of the arm lever 19 moves to the fixed gripping claw 15 side described later by the extension of the rod of the hydraulic cylinder 18, the receiving surface 140a of the claw block 140 is moved by the pressing surface 192 of the advancing / retreating portion 191. The movable gripping claw 14 is moved to the fixed gripping claw 15 side and grips the pile with the fixed gripping claw 15. At this time, the advancing / retreating portion 191 pushes out the movable gripping claw 14 with a very strong force. Since this pushing is performed by the contact between the pressing surface 192 and the receiving surface 140a, it engages with the engaging hole 193 that is an engaging element. An unreasonable force does not act on the engaging portion of the pin 147, and there is no possibility of damaging them.

  When the advancing / retreating portion 191 of the arm lever 19 moves in the opposite direction due to the contraction of the rod of the hydraulic cylinder 18, the pressing of the receiving surface 140a by the pressing surface 192 is released and the movable gripping claw 14 is loosened. The sliding member 143 is pulled by the advancing / retreating portion 191 due to the engagement of the joint hole 193 and the engaging pin 147, and the movable side gripping claw 14 moves away from the fixed side gripping claw 15.

  The fixed-side gripping claw 15 has a substantially rectangular parallelepiped-shaped claw block 150, and a plurality of projections 152 are provided on the entire gripping surface 151 of the claw block 150, and the opposite side is the gripping claw mounting portion. The contact surface 150 a is in contact with the 12 inner surfaces 123. On the upper surface of the claw block 150, a plate-like attachment member 153 formed in an elongated shape with substantially the same width as the claw block 150 is fixed. The attachment member 153 is provided with reinforcing portions 154 and 154a on both sides in the width direction.

  The attachment member 153 is fixed to the claw block 150 via reinforcement portions 154 and 154a, and an inverted U-shaped handle 155 is provided between the reinforcement portions 154 and 154a of the claw block 150. In addition, a bolt hole 156 is formed at the center of the portion of the attachment member 153 protruding from the claw block 150.

  The fixed-side gripping claw 15 fits the attachment member 153 between the guide members 121 and 122 of the gripping claw mounting portion 12, the bolt hole 156 is fitted into the mounting bolt 120, and a rectangular washer is attached to the mounting bolt 120. 158 is inserted, and finally, a nut 159 is screwed onto the mounting bolt 120 and attached. With the above structure, each of the gripping claws 14 and 15 can be freely attached to and detached from the gripping claw mounting portions 11 and 12, respectively.

  The vibrator hammer device A has a conventional chuck device 100 having a structure in which the arm lever 19 is driven by the hydraulic cylinder 18 as described above, and the fixed gripping claws 15 and the movable gripping claws 14 are detachable. Compared with the structure in which actuators such as hydraulic cylinders are arranged face to face as described above, the width of the device on the inlet side of the pile insertion space 13 can be made narrower, and the device can be miniaturized.

(Function)
The use method and operation of the vibratory hammer apparatus A will be described mainly with reference to FIGS. 5 and 6.
First, the vibratory hammer apparatus A can grip the H-section steel 5 from the horizontal direction as shown in FIG. 5 (a), or grip the steel sheet pile 4 from the horizontal direction as shown in FIG. 5 (b). Holding, holding or clamping). When gripping the H-shaped steel 5, one flange 51 is positioned in the pile insertion space 13, the outer surface of the flange 51 is brought into contact with the contact surface 131 of the contact member 130, and the other flange 52 is held on the movable side. The web 50 is gripped by the movable side gripping claws 14 and the fixed side gripping claws 15 while being positioned outside the claws 14 and the fixed side gripping claws 15.

  When gripping the steel sheet pile 4, the joint 43 at the tip edge of one flange 41 is positioned in the pile insertion space 13, and the outer edge of the joint 43 is brought into contact with the contact surface 131 of the contact member 130. The other flange 42 and the joint 44 are positioned outside the movable gripping claws 14 and the fixed gripping claws 15 to grip the intermediate web 40 with the movable gripping claws 14 and the fixed gripping claws 15. In the following description of the operation, the case where the pile is the H-section steel 5 will be described.

  First, at the position where the H-section steel 5 is to be driven, the ground is softly solved by performing a pre-excavation to a required depth in advance by known means that can be applied even in places where the upper space is limited. The H-section steel 5 is put in this advanced excavation part at a required depth, the H-section steel 5 is gripped from the horizontal direction, and the vibrator hammer apparatus A is attached to the required height of the H-section steel 5.

  When the vibrator hammer device A is first attached to the H-section steel 5 standing vertically on the ground, the movable gripping claws 14 and the fixed gripping claws 15 of the chuck device 100 are removed in advance. Next, it is suspended at a required height via the wire rope 3 by a crane or the like mounted on the truck. In the vibratory hammer apparatus A, the weights of the respective parts are distributed so that the base 1 is kept in a substantially horizontal state and balanced while being suspended by the wire rope 3.

  The vibrator hammer device A from which the movable gripping claws 14 and the fixed gripping claws 15 are removed is suspended and placed on the ground so that the pile insertion space 13 is fitted into the H-shaped steel 5. In this state, the movable side gripping claw 14 and the fixed side gripping claw 15 are attached to the gripping claw attaching portions 11 and 12. At this time, the movable side gripping claws 14 and the fixed side gripping claws 15 are left loose, without gripping the H-shaped steel 5 by driving the movable side gripping claws 14 with the hydraulic cylinder 18.

  The crane is operated to wind up the wire rope 3 and raise the vibrator hammer device A along the H-section steel 5 to a required height. The hydraulic cylinder 18 is driven, the movable gripping claw 14 is moved to the fixed gripping claw 15 side, and the H-shaped steel 5 is horizontally sandwiched between the movable gripping claw 14 and the fixed gripping claw 15 with the web 50 of the H-section steel 5 interposed therebetween. The vibratory hammer device A is mounted so as to be gripped from the direction.

  Since the H-shaped steel 5 is gripped by the movable gripping claws 14 and the fixed gripping claws 15 that are driven by the hydraulic cylinder 18, it is fastened manually by the operator as shown in the above-mentioned conventional publication. Unlike what is tightened with bolts and nuts, a sufficient gripping force is obtained when the vibratory hammer device A is attached, and the gripping force is stable.

  Then, the crane is operated so that the wire rope 3 is drawn out and loosened, and the shaker 2 is operated so that the entire load of the vibratory hammer apparatus A is applied to the H-section steel 5. As a result, a sufficient load and vibration in the driving direction are applied to the H-section steel 5, the H-section steel 5 is driven, and the vibrator hammer apparatus A also descends together with the H-section steel 5.

  Further, since the wire rope 3 is further unwound in accordance with this, the workability is high unlike the case where the arm or boom of the working machine is operated and followed as in the conventional case. Further, when the vibratory hammer apparatus A is mounted on the H-section steel 5, the contact member 130 abuts against the outer surface of the flange 51 of the H-section steel 5, so that the attitude of the vibratory hammer apparatus A is kept horizontal as shown in FIG. Therefore, the vibration of the seismic machine 2 acts more effectively.

  When the H-section steel 5 is driven in as described above and the vibratory hammer device A attached to the H-section steel 5 is lowered to a required height close to the ground or touching the ground, the shaker 2 is stopped and the movable side is moved. As described above, the gripping of the H-section steel 5 by the gripping claws 14 and the fixed-side gripping claws 15 is released.

  Then, the wire rope 3 is wound up, the vibrator hammer device A is raised along the H-shaped steel 5, and the web 50 of the H-shaped steel 5 is sandwiched between the movable gripping claws 14 and the fixed gripping claws 15 as described above. Attach to the required height of H-section steel 5. In the state where the vibrator hammer device A is suspended by the wire rope 3, the base 1 is kept substantially horizontal and balanced as described above, so that the gripping portions of the movable side gripping claws 14 and the fixed side gripping claws 15 are held. And the web 50 of the H-shaped steel 5 can be raised without causing a large resistance due to friction or the like.

  If the upper end of the H-section steel 5 is positioned near the ground when the vibratory hammer apparatus A is lowered to the ground, the next H-section steel 5 is welded and added as necessary, and then the vibratory hammer apparatus A To raise. Then, the same operation as described above is performed, and this process is repeated as many times as necessary to perform the pile driving operation. In addition, when driving in the H-section steel 5 in the location is complete | finished, the vibro hammer apparatus A is raised as it is, without extracting the next H-section steel 5, and it extracts from the H-section steel 5.

  The removal and attachment of the movable side gripping claws 14 and the fixed side gripping claws 15 can be performed from the upper side of the base 1, so that the operator can easily work. In addition, this makes it possible to work even in a state where the lower part of the device is lowered to contact the ground, especially when driving the pile deeply into a long length, so that the labor of replacement can be minimized. Excellent work efficiency.

  Further, in the vibratory hammer apparatus A, the position of the part that grips the H-shaped steel 5 of the seismicizer mounting portion 16 and the gripping claws 14 and 15 to which the load of the seismograph 2 is applied is the tightening of the gripping claws 14 and 15. Since the direction intersects the direction (orthogonal direction in the present embodiment), the load moment by the shaker 2 applied to the shaker mounting portion 16 is the movable gripping claws 14 sandwiching the H-section steel 5. The fixed side gripping claws 15 do not act in the opening direction, and there is no possibility that the vibration of the shaker 2 weakens the gripping force by the gripping claws 14 and 15.

  As described above, the vibro hammer apparatus A can be attached by holding both the steel sheet pile 4 and the H-section steel 5 from the horizontal direction, and is a combined type for the steel sheet pile 4 and the H-section steel 5. For example, even in a work site in which the steel sheet pile 4 and the H-shaped steel 5 are installed together, it is not necessary to replace the vibratory hammer device with a dedicated type of the pile when changing the pile, and the workability is high.

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

A Vibro hammer device 1 Substrate 10 Frame 100 Chuck device 11 Holding claw mounting portion 110 Mounting bolt 111, 112 Guide member 113 Washer receiver 114 Inner side surface 12 Holding claw mounting portion 120 Mounting bolt 121, 122 Guide member 123 Inner side surface 13 Pile insertion space portion DESCRIPTION OF SYMBOLS 130 Contact member 131 Contact surface 14 Movable side holding claw 140 Claw block 140a Receiving surface 141 Holding surface 142 Protrusion 143 Slide member 144, 144a Reinforcement part 145 Handle 146 Long hole 147 Engaging pin 148 Washer 149 Nut 15 Fixed side holding claw 150 Claw Block 150a Abutment Surface 151 Grip Surface 152 Protrusion 153 Mounting Member 154, 154a Reinforcement Part 155 Handle 156 Bolt Hole 158 Washer 159 Nut 16 Seismic Device Mounting Member 160 Mounting Plate 161 Leg Plate 162 Bo Bolt hole 17 Space portion 18 Hydraulic cylinder 180 Shaft rod 181 Shaft pin 19 Arm lever 190 Shaft rod 191 Advance / Retreat portion 192 Press surface 193 Engagement hole 2 Seismic machine 20 Bolt 21 Mounting member 22 Suspension tool mounting portion 3 Wire rope 30 Hanging Lower tool 4 Steel sheet pile 40 Web 41, 42 Flange 43, 44 Joint 5 H-section steel 50 Web 51, 52 Flange

Claims (3)

It is a vibratory hammer device equipped with a chuck device (100) for gripping a pile from the horizontal direction side during pile driving,
A base body (1) provided with the chuck device (100);
A shaker (2) attached to the upper surface of the base (1);
Have
The chuck device (100) includes:
A fixed claw element (15);
A movable claw element (14) driven in a direction to advance and retreat toward the fixed claw element (15);
Have
The arm lever (19) for driving the movable claw element (14) and the actuator (18) for driving the arm lever (19) are attached to the base body (1),
The fixed claw element (15) and the movable claw element (14) are detachably attached to the base body (1) from above the base body (1),
Either one or both of the base body (1) and the seismic machine (2) is provided with a hanging tool mounting portion (22) for mounting the hanging tool of the working machine,
Vibro hammer device. The movable claw element (14) is attached to the base body (1) on the side facing the fixed claw element (15) side so as to be able to advance and retreat toward the fixed claw element (15),
The arm lever (19) is movable by engaging an engagement element (193) provided on the operating point side of the arm lever (19) and an engagement element (147) of the movable claw element (14). The claw element (14) is moved in a direction away from the fixed blade element (15),
The movable claw element (14) is pushed by the pushing portion (192) on the action point side of the arm lever (19) and moves toward the fixed claw element (15), so that the pile can be gripped.
The vibratory hammer device according to claim 1. When the base body (1) has a pile insertion space (13) for inserting through the pile, and the pile insertion space (13) grips the steel sheet pile or the H-shaped steel with the chuck device, the steel sheet pile and the H-shaped steel It has a space shape that can be accommodated in either case, and the edge of the flange of the steel sheet pile or H-shaped steel gripped by the chuck device on the back side opposite to the slot in the pile insertion space (13) A contact member (130) that can be brought into contact with,
The vibratory hammer device according to claim 1 or 2.

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