JP2008150848A - Long member erecting and setting device of excavator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a long member erecting and setting device of an excavator, which can erect a long member such as an excavating rod laid on the ground, and can connect the same to a rotation driving device, without using a truck crane. <P>SOLUTION: The excavator vertically movably supports a rotation driving body inclusive of a rotation driving source via an erect mast, and connects the long member such as the excavating rod to the rotation driving body. The long member erecting and setting device of the excavator further supports the rotation driving body via a vertically moving surface with respect to the mast in a rotatable manner, and the rotation driving body has a cylinder body rotatably arranged therein, which has a through hole having both open edges, for detachably inserting therein the long member. Further the cylinder body has a chuck means arranged thereon, to which rotation is transmitted from the rotation driving source and which functions to connect the inserted long member to the cylinder body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is an excavator equipped with a mast that supports a rotary drive device so as to be movable up and down, an agitator, a pile erection machine, etc. The present invention relates to a long member startup and setting device for starting up a long member such as a pile and connecting the upper end portion thereof to a rotary drive device.

  Conventionally, for example, in order to connect a steel pipe pile having a drilling blade at the lower end to a rotary drive device supported by a mast so as to be movable up and down in preparation for construction work, first, a crane vehicle is prepared, and the wire of the crane vehicle is prepared. Wrap the rope around the top of the bladed pile placed horizontally on the ground, and then gradually raise the bladed pile by rolling up the wire rope above the mast. A method of connecting the upper end of the motor to the rotary drive device so as to be able to transmit the rotation is adopted.

  However, the above-mentioned conventional method requires not only a large crane vehicle, which is expensive, but also has an economic disadvantage. If the work site is small, the crane vehicle is carried into the site or a pile with blades on the site. There was a difficult point in the work of lifting and setting.

  It is an object of the first invention of the present application to provide an apparatus that can stand up a long member such as a drilling rod or a pile without using a crane vehicle and set it on the mast of an excavating work machine.

  In addition to the effects of the first invention, the second invention of the present application aims to provide an apparatus that can easily turn the rotary drive body,

  It is an object of the third invention of the present application to provide an apparatus capable of easily drawing a long member into a cylindrical body in addition to the effects of the first invention or the second invention.

  The fourth invention of the present application aims to provide an effective start-up setting method for a long member using the apparatus of the first invention.

As means for solving the above problems, the first invention of the present application is:
In an excavation work machine that supports a rotary drive body including a rotational power source on an upright mast so as to be movable up and down, and to connect a long member such as a drilling rod to the rotary drive body,
The rotary drive body is further supported on a lifting surface with respect to the mast so as to be rotatable,
The rotary drive body is rotatably provided with a cylindrical body having a through-hole with openings at both ends into which the long member is to be removably inserted. The cylindrical body is transmitted with rotation from the rotational power source. A chuck means for connecting the inserted long member to the cylindrical body,
We propose a long member start-up setting device for excavating machines.

The second invention of the present application is
A rotation drive body turning drive device in which a turning winch is installed at an appropriate place and a wire rope of the winch is connected to a side portion of the rotation drive body through a sheave at the upper end of the mast is added to the first invention. Proposed long member launch set device,

The third invention of the present application is
A long member pulling drive device in which a pulling winch is installed in the rotary driving body and the wire rope of the winch is locked to a long member on the ground and pulled into the cylindrical body is the first invention or the second invention. A long member starting and setting device added to the invention is proposed.

The fourth invention of the present application is
Using the long member startup and setting device of the first invention,
First, the rotary drive body is lowered along the mast to a position close to the long member on the ground, and the rotary drive member is turned there so that the through hole axis of the cylindrical body is aligned with the axis of the long member. On the line extension,
Next, the long member is drawn into the through hole of the cylindrical body, and when at least a part of the long member protrudes through the cylindrical body, the long member is inserted into the cylindrical body by the chuck means. Connect to the body,
Next, the rotary drive body is raised along the mast, and the long member is raised along with the mast, and the rotary drive body is reversely rotated along with this, and finally the long member is moved. Stand up at the set position to stand on the mast,
We propose a method for setting up long members in excavator machines.

  According to the long member starting and setting device in the excavation work machine of the first invention of the present application, the long member can be shifted to the starting and setting position without using a conventional crane vehicle. This is extremely advantageous, and even in a narrow work site, if there is only an installation space for excavation work machines, the work can be performed, and its practical value is extremely high.

  In addition, the structure of the device can be simply improved by simply adding a new turning structure of the rotary drive body, so that an advantage that it can be provided at low cost is also obtained.

  According to the long member start-up set device of the second invention of the present application, by rotating the rotational drive body by a desired angle by the operation of the winch, the angular position is easily retracted corresponding to the long member placed on the ground. Therefore, it is possible to displace it and contribute to the improvement of work efficiency.

  According to the long member starting and setting device of the third invention of the present application, the long member placed on the ground by the operation of the winch can be easily drawn into the through hole of the cylindrical body, which contributes to the improvement of work efficiency. is there.

  According to the method for setting up the long member in the excavation work machine according to the fourth aspect of the present invention, the long member placed on the ground can be safely and reliably started, and the long member is inserted and chucked at that time. When the rotating drive body is lifted along the mast, the long member can be automatically raised and finally moved smoothly to the set position laid parallel to the mast.

Hereinafter, an example implemented in a pile erection machine will be described in detail with reference to the drawings.
In FIGS. 1 (a) and 1 (b), two guide rails (supporting the mast (2) vertically at the front end of the base machine (1) and laying over the entire front side of the mast (2) ( 3), (3), the support board (4), and the slide metal fitting (5)... With the plate surface oriented parallel to the elevation surfaces of the two guide rails (3) and (3). The rotary drive body (6) is lifted and lowered with respect to the surface of the support board (4), that is, the mast (2) via the slewing bearing device (7) on the front surface of the support board (4). It is pivotally supported so that it can turn on the surface.

  A sheave block (8) is attached to the upper end of the support board (4). The sheave block (8) is pulled out from a winch (not shown) placed on the base machine (1), and then the mast (2 ) A lifting wire rope (10) suspended from the top sheave (9) at the upper end is hung, and the support board (4) and the rotary drive body (6) are wound by winding and unwinding the wire rope (10). It will be lifted and lowered along the mast (2).

  The rotational drive body (6) is as follows. As shown in FIGS. 2 and 3, a cylindrical body (12) having a through hole (13) in which both ends of the steel pipe pile (P) can be inserted and removed is inserted into a semi-oval flat gear case (11). In a state of slightly projecting from the upper and lower surfaces of the gear case (11), is supported rotatably via ball bearings (14) and (15), and a large gear (16) is mounted on the outer peripheral surface of the cylindrical body (12). On the other hand, hydraulic motors (17) and (17) are installed on the upper surface of the gear case (12), and an output shaft (18) protruding into the gear case (12) of both hydraulic motors (17) and (17). , (18) are respectively fixed with small gears (19), (19), and both small gears (19), (19) are engaged with the large gear (16).

  In addition, the steel pipe pile (P) used by this example has an excavation blade | wing (B) in a pile lower end, as shown by a virtual line in FIG.

  A chuck device (20) is mounted on the upper part of the cylindrical body (12). The chuck device (20) has a fixed chuck plate (21) and movable chuck plates (22), (22) each having a substantially one-third arc, and the fixed chuck plate (21) is the cylindrical body. The upper end flange (23) of (12) is fixed by bolts, nuts (24)... And the movable chuck plates (22) and (22) have one end at each end of the fixed chuck plate (21). The shafts (25) and (25) are connected to the flanges (23) so as to be swingable, and the chucking opening / closing drive hydraulic cylinders ( 26), the base of (26) and the tip of the piston rod (27), (27) are connected by pins (28), (28), (29), (29), respectively.

  The structure of the slewing bearing device (7) of the rotary drive body (6) is as follows. As shown in FIGS. 2 and 3, a pivot shaft (30) is provided on the rear surface of the gear case (11) of the rotary drive body (6), while a bearing (31) is provided at the center of the front surface of the support board (4). The pivot shaft (30) is pivotally supported on the bearing (31) so as to be pivotable on the surface of the support board (4).

  The slewing bearing device (7) of this example further has a structure capable of turning 90 degrees left and right from a position where the cylindrical body (12) is vertical. First, as shown in FIG. 4, a stopper (32) is projected from the outer peripheral surface of the pivot shaft (30), and a groove in which the stopper (32) is slidably engaged with the inner peripheral surface of the bearing (31). When the stopper (32) is formed with a restriction groove (33) over an angular range allowing rotation of 180 degrees, and when the cylindrical body (12) is in a vertical position, as shown in FIG. The stopper (32) is adjusted so as to reach the intermediate position of the restriction groove (33).

  Further, as a means for locking the entire rotary driving body (6) to the position when the cylindrical body (12) reaches a vertical position, as shown in FIGS. While fixing the U-shaped receiving metal fitting (34), one end of the substantially L-shaped movable metal fitting (35) is fixed to the lower surface of the rear portion of the gear case (11), and the other end of the movable metal fitting (35) is fixed to the lower end of the gear case (11). When the cylindrical body (12) is swung to a vertical position, it is swung to a position where it overlaps with the receiving metal fitting (34), and there is established in both metal fittings (34), (35) which are weighted as shown in FIG. The lock pins (38) are inserted into the pin holes (36) and (37) to lock them.

  As a turning drive means for the rotary drive body (6), a wire rope (39) of a turning winch (not shown) placed on the base machine (1) is guided to the upper end of the mast (2), and the mast (2) It hangs down from the sheave (41) at the tip of the arm via a guide arm (40) that is pivotably mounted on a horizontal plane at the upper end, and a hook (42) is attached to the lower end, while the lower ends of the left and right side surfaces of the gear case (11) Rings (43) and (43) to be engaged with the hook (42) are projected.

  Further, as a means for pulling the bladed steel pipe pile (P) placed on the ground into the cylindrical body (12), as shown in FIGS. 2 and 3, a pull-in winch (44) is provided at the front upper end of the gear case (11). The wire rope (45) is suspended along the side surface of the gear case (11).

Next, an embodiment of a method for setting up a pile with blades (P) using the above pile builder will be described.
In FIG. 5 (a), the rotary drive part (P) with the blade (B) placed on the ground via a sleeper (C) is slightly rotated by unwinding the lifting wire rope (10). 6) Lower the stake (P) near the upper end.

  Next, the lock pin (38) is removed, and the rotation drive part (6) is placed in a state where it can be swiveled, where the hook (42) of the wire rope (39) for swiveling is rotated as shown in FIG. The pile (P) in the part (6) is locked to the ring (43), and the rotary drive part (6) is centered on the pivot axis (30) by winding the wire rope (39). And the axial center line of the cylindrical body (12) is positioned on the extension of the axial center line of the pile (P).

  In this state, the wire rope (45) for retraction is rewound, and this is wound around the upper end from the middle part of the pile (P) as shown in the figure (c), and then the winding winch (44) is wound. The pile (P) is pulled into the through hole (13) of the cylindrical body (12) by the take-off drive.

  When the upper end of the pile (P) is drawn to a position that slightly protrudes upward through the cylindrical body (12) and the chuck plates (21), (22), (22) as shown in FIG. The chuck plates (22) and (22) are closed and contracted by the reduction driving of the chuck opening and closing hydraulic cylinders (26) and (26), thereby connecting the pile (P) to the cylindrical body (12).

  Next, the pulling wire rope (45) is removed from the pile (P), and then the rotary drive body (6) to which the pile (P) is connected is gradually pulled up by winding the lifting wire rope (10). As a result of the pulling up, the rotation drive unit (6) gradually rises while turning clockwise about the turning axis (30), and the pile (P) automatically rises while dragging the lower end to the ground. Finally, as shown in the figure (D), it reaches a vertical set position that is parallel to the mast (2).

  When standing in the set position, the pin holes (36) and (37) of the receiving metal fitting (34) of the support board (4) and the rotary driving part (6) of the movable metal fitting (35) match. The lock pin (38) is inserted into the rotary drive body (6) to lock the rotation drive body (6) so as not to turn.

  After mounting the steady rest (46) at a position near the lower end of the pile (P), the rotation of the hydraulic motor (17), (17) causes the rotation of the motor to rotate the small gear (19), (19), large gear (16) is transmitted to the cylindrical body (12), then transmitted to the pile (P) via the chuck device (20), and the pile (P) is erected while excavating the ground with the blade (B). Start.

(A) It is a front view of the pile construction machine provided with the pile starting and setting apparatus by this invention. (B) It is a side view of the same as above. It is an expansion vertical side view of the rotational drive part in a pile construction machine. It is a top view same as the above. It is the expanded IV-IV sectional view taken on the line of FIG. It is a basic diagram which shows the process of the pile starting set-up method using a pile erection machine.

Explanation of symbols

2 Mast 6 Rotating drive body 12 Cylindrical body 13 Through hole 17 Hydraulic motor 20 Chuck device 30 Rotating shaft 31 Bearing 39 Rotating wire rope 43 Ring 44 Retraction winch 45 Retraction wire rope P Pile with excavation blade

Claims (4)

In an excavation work machine that supports a rotary drive body including a rotational power source on an upright mast so as to be movable up and down, and to connect a long member such as a drilling rod to the rotary drive body,
The rotary drive body is further supported on a lifting surface with respect to the mast so as to be rotatable,
The rotary drive body is rotatably provided with a cylindrical body having a through-hole with openings at both ends into which the long member is to be removably inserted. The cylindrical body is transmitted with rotation from the rotational power source. A chuck means for connecting the inserted long member to the cylindrical body,
Long member start-up set device for excavator.   The rotation drive body turning drive device which installs the winch for turning in a proper place, and connects the wire rope of the winch to the side of the rotation drive body through the sheave of the upper end of the mast is added. Long member launching and setting device in the excavation work machine.   A long member pulling drive device is provided, wherein a pulling winch is installed in the rotary driving body, and a wire rope of the winch is locked to a long member on the ground and pulled into the cylindrical body. The long member starting set apparatus in the excavation work machine of 2. Using the long member starting and setting device in the excavation work machine of claim 1,
First, the rotary drive body is lowered along the mast to a position close to the long member on the ground, and the rotary drive member is turned there so that the through hole axis of the cylindrical body is aligned with the axis of the long member. On the line extension,
Next, the long member is drawn into the through hole of the cylindrical body, and when at least a part of the long member protrudes through the cylindrical body, the long member is inserted into the cylindrical body by the chuck means. Connect to the body,
Next, the rotary drive body is raised along the mast, and the long member is raised along with the mast, and the rotary drive body is reversely rotated along with this, and finally the long member is moved. Stand up at the set position to stand on the mast,
A method for setting up a long member in an excavator.

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