JP2786963B2 - Steel pile building equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel pile erection device used for erection of a steel pile into a pre-drilled hole in the ground, for example, in a retaining work.

[0002]

2. Description of the Related Art When cutting a ground to make a foundation or a basement of a building, it is necessary to carry out a retaining work to prevent collapse of earth and sand on an excavated surface. Typical examples of the construction method using H steel as an internal stress material in the pier work include an H steel horizontal sheet pile method and a soil column method. In the H-steel horizontal sheet pile method, a steel pile of H steel or the like is usually built in a pre-drilled hole in the ground, and then, while excavating, a horizontal sheet pile is inserted between the steel piles, and the upright and cut edges are cut. They are reinforced with tension to construct walls that block earth and sand. In the soil column method, H steel is erected in a cement milk column dug by an auger machine.

[0003] In order to accurately and safely carry out the pier work, steel piles must be vertically built into the ground.

However, in the conventional construction method, the rear end of the steel pile is lifted by a crane or the like, and the steel pile is vertically built by its own weight, and is built into the hole. The stance of the pile was uneven. In addition, when the tip of the steel pile touches the hole wall or when the cement milk is hardened, the steel pile cannot be easily inserted into the hole with its own weight, so once lift the steel pile and let it fall freely. It is a method of building with that momentum. For this reason, it took time to build the steel pile, and it was further difficult to maintain the vertical posture of the steel pile.

[0005]

SUMMARY OF THE INVENTION In view of the above fact, the present invention does not require a special heavy machine, and enables a steel pile to be erected while maintaining a vertical posture even if there is an obstacle in the hole. It is an object of the present invention to provide a steel pile erection device.

[0006]

SUMMARY OF THE INVENTION A steel pile setting device according to the present invention is a steel pile setting device used for setting a steel pile into a hole dug in the ground. A fixing member connected to the fixing member; first position adjusting means for connecting a receiving base supporting the steel pile to the fixing member so as to be rotatable around an axis of the steel pile; Second position adjusting means for connecting the cradle so that the cradle can be tilted in the horizontal direction, a guide roller provided on the cradle and in contact with a side surface of the steel stake to position the steel stake; A moving frame disposed on and supported by the receiving table so as to be able to contact and separate from the receiving table, pressing means for pushing down or pulling the moving frame down from the receiving table, and locking means attached to the moving frame for locking the steel pile. Characterized by having .

[0007]

In the steel pile erection apparatus having the above-mentioned structure, the fixing member connected to the arm of the backhoe from which the bucket has been removed and the cradle supporting the steel pile are connected by the first position adjusting means. . The first position adjusting means rotates the receiving base about the axis of the steel pile with respect to the fixing member. This makes it possible to adjust the position of the steel pile around the axis. Adjustment of the position of the steel pile in the front-rear direction with respect to the fixing member is performed by bending and extending the arm. Further, the pedestal is connected to the fixed member by a second position adjusting means so as to be tiltable left and right and laterally. by this,
Left and right lateral position adjustment of the steel pile becomes possible.

[0008] As described above, the steel pile built vertically is
By releasing the suspended state by the crane, the crane falls freely into the hole while being guided by the guide roller provided on the receiving table. At the time of this free fall, the steel pile is guided by the guide rollers, so that the vertical posture is maintained.

If the tip of the steel pile hits some obstacle and cannot be inserted by a predetermined amount, the steel pile is locked by locking means provided on the moving frame. Next, the moving frame is pushed down by the pressing means, and the steel pile is pressed in. Here, when the pressing means has moved fully in the pressing-down direction, the locking means is released, and the pressing means is pulled back to move the moving frame upward. Next, the steel pile is locked again by the locking means, and the moving frame is pressed down by the pressing means. By repeating this operation, the steel pile is pressed into a predetermined position.

[0010]

As shown in FIG. 1, a steel pile erection apparatus M according to the present embodiment is attached to a tip end of an arm 14 of a backhoe 12 from which a bucket has been removed via a fixture 10. For this reason, a special heavy machine for mounting the steel pile erection device M is not required.

As shown in FIGS. 2 and 4, the fixture 10 comprises a pair of substantially triangular support plates 16 facing each other and a base plate 18 fixed to the side of the support plates 16. I have. Shaft holes 22 having bosses 20 protruding in directions facing each other are formed at the upper and lower ends of the support plate 16. A shaft 24 is inserted through the shaft hole 22, and the fixing tool 10 is rotatably attached to the tip of the arm 14 of the backhoe 12. As a result, as shown in FIG. 1, if the arm 14 bends and extends in the front-back direction with respect to the H steel 26, the H steel 26 can be vertically positioned in the direction of the arrow A.

As shown in FIG. 2 and FIG.
A substantially triangular plate member 28 extending in the horizontal direction is provided at an upper end portion of the base plate 18 constituting 0. The lower end of the base plate 18 is provided with a house type plate member 30.
Is provided. An arc gear 32 is fixed to the plate member 30. The gear 32 meshes with a drive gear 36 fixed to a rotating shaft of a hydraulic motor 34. The hydraulic motor 34 is fixed to a semicircular support bracket 38 in plan view. The support bracket 38 is fixed to a side surface of a rectangular mounting plate 40. A rectangular support plate 42 is in surface contact with the upper part of the mounting plate 40. At the upper and lower ends of the support plate 42, a pair of plate members 44 extending in the horizontal direction are provided.
A shaft hole 46 is formed in the plate member 44.
The shaft hole 46 and a shaft hole 48 formed in the plate member 28 are formed.
The shaft 52 is inserted into the shaft hole 50 formed in the plate member 30. Thereby, the mounting plate 40 is rotatable around the shaft 52. Therefore,
By driving the hydraulic motor 34, the driving gear 3
6 is transmitted to the arc-shaped gear 32 fixed to the plate member 30, and as shown in FIG. 4, the mounting plate 40 swings about the shaft 52 in the direction of arrow B with respect to the fixture 10. It is possible. That is, the H steel 26 can be positioned around its axis.

At the center of the left side of this mounting plate 40, FIG.
, A shaft portion 54 is provided. The shaft portion 54 is connected via a bearing 60 to a boss 58 formed at the center of the connection bracket 56. Thus, the connection bracket 56 is rotatable about the shaft 54. On the other hand, an internal gear 62 is fixed to the right outer peripheral portion of the connection bracket 56. A drive gear 66 of a hydraulic motor 64 mounted on the mounting plate 40 meshes with the internal gear 62. Accordingly, when the hydraulic motor 64 is driven, the internal gear 62 rotates through the drive gear 66, and the connection bracket 56 rotates around the shaft 54. That is, the H steel 26 can be vertically positioned in the left-right direction (the direction of arrow C) (see FIG. 4).

The hydraulic motors 34 and 64 are driven using oil pressurized by a hydraulic pump provided in the backhoe 12 as a medium. For this reason, speed control is easy, and power can be transmitted to any location and direction with few parts,
The device can be configured relatively compactly.

[0015] As shown in FIG.
A receiving base 68 having a substantially trapezoidal shape in plan view is fixed to 6. A rectangular insertion opening 70 into which the H steel 26 is erected is formed at the center of the receiving table 68. On the inner wall of the insertion opening 70, four cap-shaped guide rollers 72 whose rotation axes are arranged in directions orthogonal to each other in plan view.
Is supported. By this guide roller 72,
Both surfaces of the web portion 26A of the H steel 26 built in the insertion opening 70 are sandwiched.

A pressing roller 76 is supported by a shaft member 74 spanned between the inner walls of the insertion opening 70.
With the steel 26 installed, the outer surface of the flange portion 26B is pressed.

A rectangular through hole 7 is formed on the top surface of the receiving table 68.
6 are formed on both sides of the insertion slot 70. A pair of hydraulic jacks 78 shown in FIG. 3 are inserted into the through holes 76. The cylinder portion 80 of the hydraulic jack 78
Are fixed to the edge of the through hole 76. On the other hand, the tip of the piston 82 is connected to an upper portion of a moving frame 84 arranged below the pedestal 68. Thereby, the moving frame 84 is driven by the hydraulic jack 78 to
It moves up and down with respect to the cradle 68. The distal end of a guide rod 86 is fixed to the moving frame 84. The guide rod 86 is housed in a guide tube 88 that is attached through the cradle 68. A stopper 90 is provided at the upper end of the guide rod 86 so that the moving frame 84 does not fall out of the receiving table 68.

As shown in FIG. 2, the holding frame 9 having a semicircular shape and a tooth shape formed in a circumferential portion is provided on the moving frame 84.
2 is supported by a pin 94. The piston 98 of the hydraulic jack 96 is connected to the lower part of the presser fitting 92. The cylinder portion 100 of the hydraulic jack 96 is
The movable frame 84 is rotatably supported by a pin 102. As a result, when the hydraulic jack 96 is driven and the presser fitting 92 is pushed out in the direction of arrow D, the presser fitting 92 rotates with the pin 102 as a fulcrum, and the tooth form of the presser fitting 92 hits the flange portion 26B of the H steel 26. , H steel 26 is clamped between holding rollers 76. In addition, this presser fitting 9
2 rotates around the pin 96 and moves toward the H steel 26 by an amount corresponding to the radius thereof, so that the H steel 26 can be locked regardless of the size of the H steel 26.

Next, a procedure for setting up the H steel 26 into the hole H dug in the ground by the steel pile setting device M according to the present embodiment will be described.

First, as shown in FIG.
The steel pile erection device M attached to the tip of the arm 14 is disposed above the hole H. Next, the rear end of the H steel 26 is suspended by a crane (not shown) or the like, and the H steel 26 is inserted into the insertion port 70.
Is inserted into the guide roller 72. Next, the hydraulic jack 96 is driven to press the presser fitting 92 against the flange portion 26B of the H steel 26, and the H steel 26 is clamped between the presser roller 76 and the presser roller 76. Here, it is measured whether the H steel 26 is held vertically by a level (not shown) provided in the steel pile erection apparatus M. At this time, the positioning of the H steel 26 shown in FIG. 1 is performed by driving the arm 14 of the backhoe 12 in the direction A, and the positioning in the direction B is driven by the hydraulic motor 34 as shown in FIG. Further, the positioning in the direction of arrow C is adjusted by driving the hydraulic motor 64 (see FIG. 2).

Next, when the H steel 26 is secured in the vertical position, the hydraulic jack 96 shown in FIG.
2 is pulled back, and then the suspended state by the crane is released, and the H steel 26 is dropped freely. In this falling state, the guide roller 72 secures the vertical posture of the H steel 26, so that the H steel 26 does not tilt.

Next, when the H steel 26 cannot be inserted into the hole H to a predetermined position due to an obstacle, the hydraulic jack 96 is driven to move the presser fitting 92 again to the H steel 26.
, And the H steel 26 is clamped between the holding roller 76 and the H steel 26. Here, the hydraulic jack 78 is driven to push down the moving frame 84 together with the presser fitting 92. When the piston 86 of the hydraulic jack 78 reaches the stroke end, the presser fitting 92 is pulled back, and the moving frame 84 is lifted up by the hydraulic jack 78. Next, the presser fitting 92 is again pressed against the flange portion 26B of the H steel 26, the H steel 26 is sandwiched between the presser rollers 76, and the moving frame 84 is pushed down by the hydraulic jack 78. By repeating this operation,
The H steel 26 is inserted to a predetermined position.

As described above, since the H-steel 26 can be pushed down by the hydraulic jack 78 while maintaining the vertical posture, it can be easily built even if there is an obstacle or resistance.

[0024]

Since the present invention has the above-mentioned structure, it is not necessary to use a special heavy machine, and even if there is an obstacle in the hole, the steel pile can be erected while maintaining the vertical posture.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which a steel pile setting device according to the present invention is mounted on a backhoe.

FIG. 2 is a partial sectional view showing a state in which a moving frame of the steel pile erection apparatus according to the present invention is lifted.

FIG. 3 is a side view of the steel pile building device according to the present invention.

FIG. 4 is a plan view showing a steel pile setting device according to the present invention.

[Explanation of symbols]

 Reference Signs List 10 Fixture (fixing member) 32 Gear (first position adjusting means) 34 Hydraulic motor (first position adjusting means) 36 Drive gear (first position adjusting means) 62 Internal gear (second position adjusting means) 64 Hydraulic motor (second position adjusting means) 66 Drive gear (second position adjusting means) 72 Guide roller 78 Hydraulic jack (pressing means) 84 Moving frame

──────────────────────────────────────────────────続 き Continued on the front page (72) Yasuhiro Nakamura 3-6-2 Maizuru, Chuo-ku, Fukuoka City, Fukuoka Prefecture Inside Nakamura Industry Co., Ltd. (72) Takashi Otake 3-7-7 Marunouchi, Naka-ku, Nagoya City, Aichi Prefecture No. Otake Giken Co., Ltd. (56) References JP-A-5-179645 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 13/04

Claims (1)

(57) [Claims] 1. A steel pile erection device used for erection of a steel pile into a hole dug in the ground, wherein a fixing member connected to an arm of a backhoe, First position adjusting means for rotatably connecting the pedestal supporting the steel pile around the axis of the steel pile, and second means for connecting the pedestal to the fixed member so that the pedestal can be tilted left and right and laterally. Position adjusting means, and a guide roller provided on the cradle to abut the side surface of the steel pile to position the steel pile,
A moving frame disposed below the pedestal and supported so as to be able to contact and separate from the pedestal; pressing means for pushing or pulling down the moving frame from the pedestal; and locking the steel pile attached to the moving frame. And a locking means for locking the steel pile.