JP2951293B2 - How to Prevent Scattering of Deposits on Wire Rope - 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 preventing a spattered object from sticking to a wire rope, and more particularly to a method to prevent spattered object from spattering due to the swing of the wire rope during excavation by an excavator. Prevention methods.

[0002]

2. Description of the Related Art In the case of excavation using a Venoto excavator by the Venoto construction method, particularly when excavating deeper than an aquifer, curing is generally performed with a scattering prevention sheet or the like. This shatterproof sheet swings and presses the casing tube into the ground, excavates the earth and sand in the casing with a hammer grab, pulls up the hammer grab, pulls it out of the casing, opens the hammer grab, and discharges the earth and sand Since the earth and sand may be scattered around at the time of the operation, the sheet is for preventing the earth and sand from being scattered.

[0003] The method of installing the scattering prevention sheet is as follows. The curing sheet is hung by a crane of 25 tons or the curing net is assembled in a lattice shape by a single pipe, thereby forming a hammer grab around the area where the hammer grab is discharged. It is fixed so that it covers.

[0004]

By the way, the above-mentioned sheet for preventing scattering can prevent the earth and sand from scattering around when the earth and sand are discharged from the hammer grab, but the main sheet for lifting the hammer glove can be prevented. Debris such as muddy water and earth and sand adhering to the wire is about 1
There is almost no effect of preventing splashing (spraying of attached muddy water or attached earth and sand) due to the swing of the main wire at the position of 0 to 13 m.

The present invention has been made in view of the above circumstances, and has as its object to provide a wire rope attached material capable of preventing scattering of the attached material due to the swing of the wire rope when excavating by an excavator. An object of the present invention is to provide a scattering prevention method.

[0006]

Means for Solving the Problems] deposits scattering prevention method of a wire rope according to the present invention, for solving the above problems, when performing drilling using a drilling machine, covering a wire over winding the hammer grab a hose By wire
Muddy water and earth and sand adhering to
Make sure to fall inside the hose after leaving the wire
It is characterized by having. Preferably, the hose is a suction hose.

[0007] In deposits scattering prevention method of the wire rope, because covering the wire over a hose, when winding up the wire hammer grab when discharging the earth and sand, deposits adhered to the wire deflection wire such Even when the wire is separated from the wire, the attached material falls down along the inside of the hose, so that the attached material does not scatter.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 (a) is a side view showing a Venoto excavator to which the method for preventing a wire rope from adhering matter scattering according to an embodiment of the present invention is shown.
(B) is a front view of the Venoto excavator shown in FIG. 1 (a). FIG. 2A shows the main wire 6 shown in FIG.
FIG. 2B is a perspective view showing a state in which a suction hose is mounted on the suction hose, and FIG. 2B is a structural view showing a structure of the suction hose shown in FIG.

As shown in FIGS. 1A and 1B, a Venoto excavator 1 includes a hammer grab 2, a boom 3, a drum 4,
It is composed of a main wire 6, a casing tube 7, and the like.

The Venoto excavator 1 is an excavator using the Venoto construction method. The Venoto method is a method in which the casing tube 7 is rocked and pressed into the ground, and the earth and sand in the casing 7 is excavated and discharged by the hammer grab 2. Since the casing 7 is used for the entire length of the excavation, there is no collapse of the hole wall, and the excavated earth and sand does not use a chemical solution, so that the remaining soil can be easily treated. After inserting the well casing, the casing 7 is pulled out by rocking while filling the filter material with a gravel box. As another method, the casing 7 may be pulled out by rocking while inserting concrete with a reinforcing steel tube after inserting a reinforcing bar.

In the case of excavation of hard ground such as large boulders and bedrock, it is impossible to excavate with this casing swing type.
Excavation becomes possible by using the all-rotation all casing method. The all-rotation type all-casing method is a method in which a casing in which a carbide bit is attached to the tip of a casing tube is rotated to excavate, crushed by a chisel or the like, and discharged to the ground.

Next, a description will be given of a method for preventing the attached matter from being scattered by the Venoto method when the method for preventing the attached matter from being scattered on the wire rope is applied to a Venoto excavator. When the hammer grab 2 is wound up by the main wire 6 in order to discharge the earth and sand in the casing 7,
The attached matter such as muddy water and earth and sand attached to the main wire 6 is scattered by the swing of the main wire 6 and the wind.

[0013] As a measure for preventing such attached matter scattering,
From the tip of the boom 3 shown in FIG.
Up to the main wire 6 as shown in FIG.
By covering with the suction hose 11 of 100, even if muddy water, earth and sand, etc. are separated from the main wire 6, the muddy water, earth and sand, etc. fall down along the inside of the suction hose 11 by adopting a method.

Next, a method for installing the suction hose 11 on the Venoto excavator 1 will be specifically described.

First, as shown in FIG. 2A, two mounting wires 13 are mounted on the upper part of the boom 3 shown in FIG.
The flange bamboo shoot (flange type joint fitting) 15 is fixed by the above, and the upper part of the drum 4 shown in FIG.
The bamboo shoot 17 is fixed as shown in FIG. The flange bamboo shoot 15 and the bamboo shoot 17 are fittings for mounting the suction hose 11. After that, the suction hose 11 is attached to the veneer 1 by fitting both ends into the bamboo shoot portion of the joint fitting, and the main wire 6 is passed through the hose 11.

By using the suction hose 11 in this manner, the hose 11 need only be replaced when the wire 6 is replaced. In addition, by attaching the bamboo shoot 17 in front of the drum 4, the hose 11 can be prevented from being broken.

As shown in FIG. 2B, the suction hose 11 has a hard resin 1
1a, a soft resin 11b is provided inside the hard resin 11a, a reinforcing fiber layer 11c is provided inside the soft resin 11b, and an elastomer 11d is provided inside the reinforcing fiber layer 11c.

According to the above-described embodiment, the main wire 6, which is a scattering source, is covered with the suction hose 11 having a diameter of about 100, so that the attached material (muddy water, earth and sand, etc.) due to the deflection of the wire 6 can be dispersed at low cost. It can be safely and completely prevented.

In addition, the suction hose 11 is attached by passing the hose from the leader to the wire between the wire drums at the time of assembling the Venoto machine, and the rest is troublesome.

In order to prevent the hammer grab from being scattered when the hammer grab is excavated during excavation, it is preferable that the hammer grab be used in combination with a conventional scattering prevention sheet. This scattering prevention sheet is installed by suspending the curing sheet with, for example, a 25-ton crane or assembling the curing net in a grid with a single pipe to remove the area around the area where the hammer grab 2 is discharged. It is fixed to cover.

Further, in the above embodiment, the main wire 6 which is a scattering source is covered with the suction hose 11, but a tubular object which can cover the main wire 6 from the tip of the boom 3 to the hammer grab 2 is used. If so, the suction hose 11 can be appropriately changed to another hose or another thing, for example, a PVC pipe or a bellows-like foldable bag-like thing can also be changed.

Further, the main wire 6 is covered with the suction hose 11 and the flange bamboo saw 15 is used as a fitting for attaching the suction hose 11. However, when the main wire 6 is covered with another object, other joint shapes are cured. Tools and connection methods are used. For example, a band or a pin may be used.

In the above embodiment, the present invention is applied to a Venoto excavator. However, the present invention is not limited to this, and the present invention can be applied to other excavators. The present invention can be applied to a bucket type excavator used in a continuous underground excavation method (wall wall method) for excavating in (mud water using bentonite or the like).

[0024]

As described above, according to the present invention,
At least a part of the wire is covered with a hose. Therefore, it is possible to prevent scattering of the attached matter due to the swing of the wire when excavating by the excavator.

[Brief description of the drawings]

FIG. 1 (a) is a side view showing a Venoto excavator to which a wire rope attached matter scattering prevention method according to an embodiment of the present invention is applied, and FIG. 1 (b) is a side view showing FIG. 1) is a front view of the Venoto excavator shown in FIG.

2 (a) is a perspective view showing a state where a suction hose is attached to the main wire shown in FIG. 1 (a), and FIG. 2 (b) is a suction hose shown in FIG. 2 (a). FIG. 2 is a structural diagram showing the structure of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Venoto excavator 2 ... Hammer grab 3 ... Boom 4 ... Drum 6 ... Main wire 7 ... Casing tube 11 ... Suction hose 11a ... Hard resin 11b ... Soft resin 11c ... Reinforcement fiber layer 11d ... Elastomer 13 ... Mounting wire 15 ... Flange Bamboo shoot 17 ... Bamboo shoot

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E02F 3/47 E21B 11/00

Claims (5)

(57) [Claims] [Claim 1] when performing drilling using a drilling machine, to Flooding the wire over winding up the hammer grab a hose
Muddy water and earth and sand adhering to the wire
After leaving the wire by wind etc., drop it inside the hose.
A method for preventing attached matter from being scattered on a wire rope, which is characterized by being detached . 2. The method according to claim 1, wherein said hose is a suction hose. 3. The method according to claim 1, wherein the hose is attached between an upper part of a boom and an upper part of a drum of the excavator. 4. The method according to claim 1, wherein the hose covers a wire from the end of the boom to the hammer grab. 5. The method according to claim 4, wherein the hose has a bellows-like foldable bag shape.