JP2018003502A - Pile driver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile driver having a wire presser capable of preventing an undulation wire from slipping out of a gantry sheave even if the positional relationship between the gantry sheave and a middle sheave is largely changed.SOLUTION: A wire presser 31 comprises a pair of left-right rotary plates 32 and 33 rotatably installed on a sheave support shaft 20 and four connection members for respectively connecting mutual both rotary plates, and among the four connection members, two connection members positioned on the middle sheave side are formed as a guide connection member 34 for rotating the rotary plates by contacting with an undulation wire 26a, and two connection members positioned on the opposite side of a middle sheave are formed as wire presser connection members 35 and 36 for preventing the undulation wire 26 from slipping out of a gantry sheave 21.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pile driving machine, and more particularly, to a pile driving machine for raising and lowering a leader with a raising and lowering wire.

  In a large pile driver, the hoisting wire wound around the hoisting drum is wound several times between the gantry sheave provided on the gantry and the middle sheave connected to the pendant rope, and the hoisting wire is wound around the hoisting drum. The leader is raised and lowered by taking or unwinding (see, for example, Patent Document 1).

JP 2010-281167 A

  Since the positional relationship between the gantry sheave and the middle sheave varies greatly depending on the angle of the leader during the hoisting operation, the length of the leader, and the working state, the direction in which the hoisting wire enters and exits the gantry sheave also varies greatly. Therefore, even if a wire presser is provided to prevent the undulating wire from coming off the gantry sheave, the position is limited, and depending on the positional relationship between the gantry sheave and the middle sheave, the undulating wire comes off from the gantry sheave. There was a fear.

  Therefore, an object of the present invention is to provide a pile driving machine provided with a wire presser that can prevent the undulating wire from being detached from the gantry sheave even if the positional relationship between the gantry sheave and the middle sheave changes greatly.

  In order to achieve the above object, a pile driving machine according to the present invention is provided in the base machine, a leader provided in a undulating manner at a front portion of the base machine, a middle sheave connected to the leader via a pendant rope, and the base machine. In a pile driving machine comprising a undulating drum and a gantry sheave that wraps the undulating wire wound around the undulating drum between the middle sheave and the gantry sheave to prevent the undulating wire from coming off. The wire retainer includes a pair of left and right rotating plates rotatably attached to a sheave support shaft that supports the gantry sheave, and a undulating wire that is wound around the gantry sheave and the middle sheave. A guide member for rotating the rotating plate by contacting the rotating plate, and connecting the rotating plates to each other on the opposite side of the middle sheave. It is characterized in that a wire retainer connecting member for preventing undulating wire is out of blanking.

  Further, the pile driving machine of the present invention, a leader provided to be able to undulate in the front part of the base machine, a middle sheave connected to the leader via a pendant rope, a undulation drum provided to the base machine, In a pile driving machine including a gantry sheave that wraps the undulation wire wound around the undulation drum between the middle sheave and a wire presser for preventing the undulation wire from being detached from the gantry sheave. The wire retainer includes a pair of left and right rotating plates rotatably attached to a sheave support shaft that supports the gantry sheave, and four connecting members that respectively connect the rotating plates, Of the four connecting members, two connecting members located on the middle sheave side are brought into contact with the undulation wire that is routed between the gantry sheave and the middle sheave. As a guide connecting member for rotating the rotating plate, the two connecting members located on the opposite side of the middle sheave are wire pressing connecting members for preventing the undulating wire from coming off the gantry sheave. It is characterized by that.

  Furthermore, the pile driving machine according to the present invention has a plurality of gantry sheaves arranged between the pair of left and right rotating plates, guides one gantry sheave on the outer side of one rotating plate, and the undulating wire in the direction of the undulating drum. One wire pressing connecting member that is arranged as a guide sheave and that is positioned at the upper part of one rotating plate extends through the one rotating plate to the upper part on the outer peripheral side of the guide sheave, and the one rotating member The wire pressing connecting member located at the lower part of the plate is characterized in that it is formed in a length up to one rotating plate without protruding from the one rotating plate.

  Further, a plurality of gantry sheaves are arranged between the pair of left and right rotating plates, and one gantry sheave is provided on the outside of the rotating plates on both sides, and one of the gantry sheaves is connected to the undulating wire. The wire sheave connecting member on the other gantry sheave side is a guide sheave that guides in the direction of the undulating drum, and extends through the rotating plate up and down on the outer peripheral side of the other gantry sheave. One wire pressing connection member located at the center of the guide sheave extends through the rotating plate to the upper part on the outer peripheral side of the guide sheave, and the wire pressing connecting member positioned at the lower part of the guide sheave does not protrude from the rotating plate. It is characterized by being formed to a length up to the rotating plate.

  Further, a guide roller contacting the undulation wire is rotatably provided on the outer periphery of the guide connecting member.

  According to the pile driving machine of the present invention, the guide member and the guide connecting member provided on the middle sheave side of the partition plate rotate according to the direction of the undulating wire whose direction changes depending on the positional relationship between the gantry sheave and the middle sheave. Is pivoted about the sheave support shaft, so that the wire pressing connecting member provided on the other side of the pivoting plate can be moved to an appropriate position for preventing the undulating wire from being detached from the gantry sheave. .

The one example of the pile driving machine of the present invention is shown and is a side view of the main part showing the state when the gantry is bent. Similarly, it is the side view of the principal part which shows the state at the time of gantry standing up. It is a side view of the principal part which similarly shows the state at the time of a reader standing. It is a top view which shows the relationship between a gantry sheave and a middle sheave. It is a rear view which shows a gantry sheave part. It is a side view which shows the transport state of a base machine. It is a side view which shows the state at the time of a reader assembly. It is a side view which shows the state at the time of reader | standar standing.

  FIGS. 6 to 8 show a procedure for transporting and assembling a large pile driver, FIG. 6 shows the state of the base machine mounted on the loading platform during transportation, and FIG. 7 shows the leader in the front of the base machine. FIG. 8 shows a state where the reader is erected.

  First, the pile driver 11 includes a base machine 14 including a lower traveling body 12 provided with a crawler, and an upper revolving body 13 provided on the upper portion of the lower traveling body 12 so as to be pivotable, and a front portion of the upper revolving body 13. A front bracket 15 detachably provided on the front bracket 15, a leader 16 provided at the front end of the front bracket 15 so as to be raised and lowered, a plurality of winch drums provided at the center of the upper swing body 13, and the upper part And a bendable gantry 17 provided above the rear portion of the revolving structure 13. Further, when it is necessary to mount the generator 18 or the like, a detachable support base 19 is attached to the rear portion of the upper swing body 13.

  At the upper end of the gantry 17 is provided a sheave support shaft 20 in the left-right direction of the upper swing body, and a plurality of gantry sheaves 21 are rotatably provided on the sheave support shaft 20. On the other hand, a middle sheave block 23 is connected to the rear portion of the reader 16 via a pendant rope 22, and a plurality of middle sheaves 24 are rotatably provided on the middle sheave block 23. Of the plurality of winch drums, the undulation wire 26 wound around the undulation drum 25 provided at the rear of the upper swing body 13 is wound around the gantry sheave 21 and the middle sheave 24 several times. The leader 16 is raised and lowered by winding or unwinding the raising and lowering wire 26 with the raising and lowering drum 25.

  When transporting the pile driver 11, the leader 16 is disassembled and removed from the front bracket 15, the front bracket 15 is removed from the upper swing body 13, and the crawler is removed from the lower traveling body 12. The bracket 15 and the crawler are placed on a loading platform of an appropriate transport vehicle. Further, as shown in FIG. 6, the base machine 14 rotates the track frame 12 a of the lower traveling body 12 by 90 degrees with respect to the upper swing body 13, bends the gantry 17, and The separated middle sheave block 23 is placed on the platform of the transport vehicle while being placed on the upper swing body 13.

  Therefore, when the pile driving machine 11 is transported, the positional relationship between the gantry sheave 21 and the middle sheave 24 changes greatly. For example, when the transported pile driving machine 11 is assembled in a working state, as shown in FIGS. In the transport state of the base machine 14, the undulating wire 26 a that is wound around the gantry sheave 21 and the middle sheave 24 and the undulating wire 26 b that goes to the undulating drum 25 are in a direction along the front leg 17 a of the bent gantry 17.

  As shown in FIGS. 2 and 7, in the state where the leader 16 is lying down in the horizontal direction, the undulating wire 26a hung around the gantry sheave 21 and the middle sheave 24 has the gantry 17 standing upside down in an inverted V shape. The undulation wire 26b is directed from the gantry sheave 21 toward the front in a direction perpendicular to the rear leg 17b, and the undulation wire 26b from the gantry sheave 21 to the undulation drum 25 is in a direction along the rear leg 17b.

  Further, as shown in FIGS. 3 and 8, in the state where the leader 16 is erected, the undulating wire 26 a hung around the gantry sheave 21 and the middle sheave 24 is upward from the tip of the rear leg 17 b of the gantry 17 erected. However, the hoisting wire 26b from the gantry sheave 21 toward the hoisting drum 25 does not change from the direction along the rear leg 17b. In addition, during the pile driving operation in which the leader 16 is not raised by the undulating wire 26, the undulating wire 26 is in a loose state.

  As described above, the sheave support shaft 20 is provided with the wire presser 31 for preventing the undulating wire 26 whose direction with respect to the gantry sheave 21 is greatly changed from coming off the gantry sheave 21. The wire presser 31 includes two guide connecting members that respectively connect the four corners of a pair of left and right rotating plates 32 and 33 having a through hole through which the sheave support shaft 20 is rotatably inserted. A total of four connecting members including 34 and 34 and two wire pressing connecting members 35 and 36 are provided.

  The rotating plates 32 and 33 are arranged inside one of the gantry sheaves 21a and 21b at both ends of the plurality of gantry sheaves 21, and the gantry sheave 21a located outside the one rotating plate 32 is undulated. A guide sheave is formed around the undulating wire 26 b that faces the drum 25. Further, a wire fixing member 37 for fixing the end of the undulating wire 26a from the middle sheave 24 is provided on the outside of the gantry sheave 21b located outside the other rotating plate 33.

  When the wire retainer 31 is attached to the sheave support shaft 20 and the undulation wire 26 a is hung between the gantry sheave 21 and the middle sheave 24, the two guide connecting members 34 and 34 are attached to the sheave support shaft 20. The middle sheave 24 is located on the inner side of the upper and lower undulation wires 26a. Therefore, as the direction of the undulation wire 26 a changes, either one of the upper and lower guide connection members 34, 34 contacts the undulation wire 26 a, and the guide connection members 34, 34 face the middle sheave 24. The rotation plates 32 and 33 are rotated about the sheave support shaft 20. Further, guide rollers 34a are rotatably attached to the outer circumferences of the guide connecting members 34, 34 so that the undulating wire 26a is not rubbed and damaged by the guide connecting members 34, 34.

  The wire pressing connecting members 35 and 36 are provided on the outer periphery of the gantry sheave 21 at positions where the undulating wire 26 can be prevented from being detached from the gantry sheave 21. The holding connection member 35 extends through the one rotating plate 32 to the upper part on the outer peripheral side of the gantry sheave 21a located outside the one rotating plate 32, and is connected to the wire holding connection located on the lower side. The member 36 does not protrude outward from the one rotating plate 32 and is formed to a length up to the one rotating plate 32. Thereby, even if the direction of the wire presser 31 changes, the hoisting wire 26b from the gantry sheave 21a serving as the guide sheave to the hoisting drum 25 is prevented from coming into contact with the wire presser connecting member 36.

  By providing the wire retainer 31 formed in this manner at the gantry sheave 21, the wire retainer coupling members 35 and 36 are provided on the outer periphery of the gantry sheave 21 even if the positional relationship between the gantry sheave 21 and the middle sheave 24 changes greatly. Since it is located, it is possible to reliably prevent the undulating wire 26 that is wound around the gantry sheave 21 from being detached from the gantry sheave 21.

  In this embodiment, the wire pressing rotary plate is formed in a trapezoidal shape with four connecting members arranged at the four corners, but the shape of the rotary plate is arbitrary. Further, the guide member is not limited to the above-described guide connecting member, but may be one protruding from one rotating plate, and may be arranged so as to sandwich one of the upper and lower undulation wires. In addition, only the guide sheave that hangs the undulation wire toward the undulation drum can be arranged outside the rotating plate, and another gantry sheave can be arranged between the rotating plates. The number is arbitrary.

  DESCRIPTION OF SYMBOLS 11 ... Pile driver, 12 ... Lower traveling body, 12a ... Track frame, 13 ... Upper turning body, 14 ... Base machine, 15 ... Front bracket, 16 ... Leader, 17 ... Gantry, 17a ... Front leg, 17b ... Rear leg DESCRIPTION OF SYMBOLS 18 ... Generator, 19 ... Support stand, 20 ... Sheave support shaft, 21, 21a, 21b ... Gantry sheave, 22 ... Pendant rope, 23 ... Middle sheave block, 24 ... Middle sheave, 25 ... Relief drum, 26, 26a, 26b ... Elevation wire, 31 ... Wire holding member, 32,33 ... Rotating plate, 34 ... Guide connecting member, 34a ... Guide roller, 35,36 ... Wire holding member, 37 ... Wire fixing member

Claims (5)

  A leader provided at the front of the base machine so as to be able to undulate, a middle sheave connected to the leader via a pendant rope, a undulation drum provided in the base machine, and a undulation wire wound around the undulation drum In a pile driving machine including a gantry sheave that hangs around the middle sheave, and has a wire presser for preventing the undulating wire from coming off from the gantry sheave, and the wire presser A pair of left and right rotating plates rotatably attached to a supporting sheave support shaft, and for rotating the rotating plate by contacting a undulation wire hung between a gantry sheave and a middle sheave The guide member and the rotating plate are connected to each other on the opposite side of the middle sheave to prevent the undulation wire from coming off the gantry sheave. Pile driver, characterized in that it comprises a wire retainer connecting member.   A leader provided at the front of the base machine so as to be able to undulate, a middle sheave connected to the leader via a pendant rope, a undulation drum provided in the base machine, and a undulation wire wound around the undulation drum In a pile driving machine including a gantry sheave that hangs around the middle sheave, and has a wire presser for preventing the undulating wire from coming off from the gantry sheave, and the wire presser A pair of left and right rotating plates rotatably attached to a supporting sheave support shaft, and four connecting members that connect the rotating plates to each other, and the middle sheave side of the four connecting members The two connecting members positioned at the position of the rotating plate are brought into contact with an undulating wire wound between the gantry sheave and the middle sheave to rotate the rotating plate. A guide for the coupling member for, Midorushibu and two connecting members located opposite, pile driver, characterized in that the wire pressing coupling member for preventing undulating wire is disengaged from the gantry sheave.   A plurality of gantry sheaves are arranged between the pair of left and right rotating plates, and one gantry sheave is arranged outside the one rotating plate as a guide sheave for guiding the undulating wire in the direction of the undulating drum. One wire pressing connecting member located at the upper part of the moving plate extends through the one rotating plate to the upper part on the outer peripheral side of the guide sheave, and is located at the lower part of the one rotating plate. The pile driving machine according to claim 2, wherein the pile driving machine is formed so as not to protrude from the one rotating plate and to the length of one rotating plate.   A plurality of gantry sheaves are disposed between the pair of left and right rotating plates, and one gantry sheave is provided on the outer sides of the rotating plates on both sides, and one of the gantry sheaves is used as an undulating drum. The wire pressing connecting member on the other gantry sheave side extends in the vertical direction on the outer peripheral side of the other gantry sheave and is positioned at the upper part on the guide sheave side. One wire press connecting member that extends through the rotating plate to the upper part on the outer peripheral side of the guide sheave, and the wire press connecting member located at the lower part of the guide sheave rotates without protruding from the rotating plate. The pile driving machine according to claim 2, wherein the pile driving machine is formed to a length up to a plate.   The pile driving machine according to any one of claims 2 to 4, wherein a guide roller that contacts the undulation wire is rotatably provided on an outer periphery of the guide connecting member.

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