JP2597948B2 - Recovery method of anchor steel wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering a removable anchor steel wire installed in a plurality of anchor holes.

[0002]

2. Description of the Related Art Removable anchor steel wires whose purpose of use has been completed in temporary earth retaining work and the like are recovered by an anchor removal method. Conventionally, this type of anchor removal method uses a crane, connects the anchor steel wire installed in the anchor hole and the crane wire, pulls out the anchor steel wire by the hoisting force of the crane, and then shortens it. Methods of cutting and discarding are known.

[0003]

However, the conventional method of recovering an anchor steel wire has the following problems. (1) When the anchor steel wire is pulled out, its end is twisted in a coil shape and bouncing, which is dangerous. (2) When an unbonded anchor steel wire is pulled out, the grease adhering to the anchor steel wire may be scattered due to the bounce of the anchor steel wire, and may adhere to surrounding structures, equipment, clothes of workers, and the like. (3) Since the anchor steel wire cut short is curled, the volume becomes more than 10 times the sliding.
This hinders other operations and complicates transportation and disposal, which is uneconomical. (4) Depending on the site, there may not be a place where the crane is carried in, and the carrying of the crane may hinder other work, making it difficult to perform other work in parallel. Therefore, an object of the present invention is to provide a method for collecting anchor steel wires that can prevent danger at the time of pulling out and scattering of grease, can collect compactly, and can be performed even in a narrow place.

[0004]

According to the present invention, there is provided a method for recovering an anchor steel wire according to the present invention, comprising the steps of recovering a removable anchor steel wire installed in a plurality of anchor holes. A horizontal or vertical guide rail is provided along the base rail, and a base plate attachable to the guide rail is provided along the guide rail, and a flange body is provided at both ends of the body to be mounted on the base plate, and a separation surface perpendicular to the axis is provided. While intermittently moving a collection device having a rotatable one provided rotatably provided on the other and a drum provided reversibly on one side and removably connected to the other,
The end of the anchor steel wire protruding from the anchor hole is locked to the drum, the drum is rotated and the anchor steel wire is wound around the drum and pulled out from the anchor hole, and after or after the drawing of all the anchor steel wires is completed. In addition, the anchor steel wire which is separated from the drum, wound up in a coil shape and bound, is removed from the drum and collected.

[0005]

In the above means, the anchor steel wires are wound around the drum while the collection device is intermittently moved along the guide rails, whereby the respective anchor steel wires are sequentially pulled out and bound in a coil shape. Rolled up.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1, 2, and 3 are a front view, a plan view, and a right side view of a recovery apparatus used for carrying out the anchor steel wire recovery method of the present invention. The recovery device 1 has a rectangular base plate 2 attached to a guide rail as described later, and a take-in for taking in an anchor steel wire (not shown) is required at both sides of the base plate 2. A mouth 3 is provided. On the upper surface of the base plate 2,
A rectangular fixed plate 4 is erected at one end, and a rectangular movable plate 5 that supports a drum or the like described later cooperates with the fixed plate 4 to connect a slide member 6 attached to a lower portion thereof to the base plate 2. The movable plate 5 is slidably sandwiched by guide members 7 attached to both ends of the other end, and is disposed so as to be able to advance and retreat to the fixed plate 4. The movable plate 5 is moved along the guide members 7 by a hydraulic cylinder 8 attached to the base plate 2. Be moved.

A hydraulic motor 9 is mounted inside the fixed plate 4, and the rotating shaft of the hydraulic motor 9 and the movable plate 5
A drum 11 for winding the anchor steel wire is interposed between the bearing 11 and the bearing 10 mounted on the drum. The drum 11 includes a drum-shaped body 12 and a cone-shaped flange 13 integrally connected to both ends of the drum-shaped body 12. The drum 11 has a separation surface 14 formed at an intermediate portion of the body 12 and perpendicular to an axis. And a connecting member (not shown) provided on the separation surface 15 and capable of fitting with each other. A plurality of ridges 15 in the axial direction serving as band inserting means for inserting a band (not shown) for binding an anchor steel wire to be wound as described later on the peripheral surface of the drum 11.
Are formed.

In FIG. 1, reference numeral 16 denotes a jump-preventing rod for preventing the anchor steel wire wound around the drum 11 from jumping. The rod 16 is interposed between the fixed plate 4 and the movable plate 5 between the four plates. The two upper end portions of 5 are provided with bendable base ends so that the bundled anchor steel wires can be taken out.

In order to recover the removable anchor steel wire using the recovery apparatus 1 having the above-described structure, for example, as shown in FIG. 4 and FIG. A wire rope 21 for suspending and moving is suspended on the uppermost guide rail 18 or the ceiling wall 19 via a suspending bolt 20 while being used as the rail 18, and a wire rope for laterally moving between both ends of the uppermost guide rail 18. 22 is installed. Then, both wire ropes 21 and
2 via a chain block 23 movably locked to 2,
After suspending the collecting device 1, the collecting device 1 is positioned so as to straddle between the required guide rails 18 by the chain block 23, and then the collecting device 1 is fixed by the winch 24 connected to the wire rope 22 for moving left and right. The inlet 3 corresponds to the required anchor hole. The base plate 2 of the collection device 1 is fixed to the guide rail 18 by bolts, nuts, and the like.
Then, the distal end of the anchor steel wire protruding from the anchor hole is locked to the drum 11, and then the anchor steel wire is pulled out from the anchor hole while being wound around the drum 11. When the pulling out of one anchor steel wire is completed, the recovery device 1 is moved to pull out the anchor steel wire in the adjacent anchor hole. Then, when the drum 11 is full of the anchor steel wire, a band is inserted between the ridges 15 to bind a plurality of wound portions of the coiled anchor steel wire, and then the hydraulic cylinder 8 is extended. The movable plate 5 and the half of the drum 11 mounted thereon are separated from the other half.
Then, the anchor steel wire bound in a coil shape is removed from one of the separated drums 11 and the same collection operation is repeated thereafter, thereby completing the operation.

[0010] In the above embodiment, the case has been described where the belly-raising material is used as the horizontal guide rail 18. However, when there is a vertical column material, this is used as the vertical guide rail. , Using the chain block 23, the wire ropes 21, 22 or the like, and moving in the vertical and horizontal directions.

[0011]

As described above, according to the collecting direction of the anchor steel wire according to the present invention, the anchor steel wire is wound around the drum while the collecting device is intermittently moved along the guide rails. Since the anchor steel wire is sequentially pulled out and bound and wound in a coil shape, when the anchor steel wire is pulled out, the end portion is not twisted in a coil shape and bounces as in the related art,
The work can be performed safely, can be collected compactly, does not hinder other work, and can be easily transported and disposed of, which is economical. Further, since no crane operation is required, the site can be widely used, and other operations can be performed in parallel. In particular, the pull-out operation can be performed even in a narrow place where the crane cannot be carried. Furthermore, since the anchor steel wire does not bounce, grease can be prevented from scattering even when the unbonded anchor steel wire is pulled out, and the grease adheres to surrounding structures, equipment or clothes of workers. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a front view of a recovery device provided for carrying out a method for recovering anchor steel wire of the present invention.

FIG. 2 is a plan view of the collection device shown in FIG.

FIG. 3 is a right side view of the collection device shown in FIG.

FIG. 4 is a front view showing one embodiment of a method for recovering anchor steel wire of the present invention.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Collection | recovery apparatus 2 Base plate 11 Drum 12 Body 13 Flange 14 Separation surface 18 Guide rail 20 Hanging bolt 21 Wire rope 22 Wire rope 23 Chain block

Claims (1)

(57) [Claims] 1. A method for recovering a removable anchor steel wire installed in a plurality of anchor holes, wherein a guide rail is provided horizontally or vertically along the anchor holes, and the guide rail is provided along the guide rails. A base plate that can be attached to the main body, a flange body is provided at both ends of the body, and mounted on the base plate, one provided rotatably provided on a separation surface perpendicular to the axis and one rotatably provided, and the other provided on one side. While intermittently moving the collection device having a drum provided to be able to advance and retreat and to be connected, the end of the anchor steel wire protruding from the anchor hole is locked to the drum, and the drum is rotated to rotate the anchor steel wire to the drum. After being pulled out from the anchor hole while being wound around, and after or after the drawing of all the anchor steel wires is completed, the drum is separated and wound into a coil shape to bind the anchor steel. A method for collecting an anchor steel wire, wherein the wire is removed from the drum and collected.