JP3644709B2 - Device for removing metallic chips from inside a drilled tube - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an apparatus for removing metallic chips from inside a drilled pipe, and more specifically, using a magnet, removes chips scattered in the pipe line when drilling a metal pipe line. The present invention relates to an apparatus for removing metallic chips.
[0002]
[Prior art]
The gas used in each household is supplied through a supply pipe and a supply pipe branched from the main pipe buried under the road. When pulling the supply pipe from the main pipe, it is common to take a shut-off measure at one location on the main pipe affected by the branch work, and stop the normal gas supply before performing the branch work. It is also required to perform branching work while maintaining normal gas supply.
When laying the supply pipe, usually, the main pipe is first provided with an opening as a construction site by cutting means, and the supply pipe is connected to the main pipe in accordance with the thus formed opening. We will draw it to the customers.
[0003]
However, when the gas main pipe is an iron pipe, if a drilling operation is performed on the main pipe by cutting means, chips (pieces) are scattered in the pipe. Since this type of swarf has a small particle size, if it is not removed immediately and thoroughly after the drilling operation, there is a risk that it will flow into the customer on the subsequent gas flow. Such swarf enters the gas appliance and tends to hinder daily use of gas.
[0004]
In order to solve the above-described problem, the present applicant previously proposed a metallic chip removing device described in Japanese Patent Application No. 6-179238 as a conventional example.
[0005]
As shown in FIG. 4, this prior art metallic chip removing device moves a rod-shaped main body 32, a spherical magnet 34 for adsorbing iron chips, and moves the spherical magnet 34 to the tip of the rod-shaped main body 32. The coil spring 33 is freely connected.
[0006]
When removing the chips scattered in the pipe using the above-described prior art metal chip removing device, the metal chip removing device is inserted into the pipe line P from the opening 37 and the spherical magnet 34 is inserted. The chips are adsorbed by moving them in the pipe, and then the metallic chip removing device is pulled back from the pipe P to collect the chips adsorbed on the spherical magnet 34.
[0007]
[Problems to be solved by the invention]
By the way, in the above-described prior art metal chip removing device, there are some problems as described below.
[0008]
One of them is that the metallic chip removing device is constructed by connecting the spherical magnet 34 to the tip of the rod-like main body 32 with a coil spring 33, so that it is inserted into the pipe P through the opening 37. When this is done, the magnet and the coiled spring are difficult to pass because they are caught by the opening 37, the joint inner wall 36, and the shutter device 31 (used for branching work while maintaining normal gas supply). In addition, since the coiled spring 33 cannot hold the spherical magnet 34 in the horizontal direction, the spherical magnet 34 strikes the aperture 37 and is not only frictioned but also attracted to the aperture by magnetic force. Various problems occur when the chip removal device is inserted into the pipeline.
[0009]
The second is that when the metal chips that have fallen in the pipe P are adsorbed and the metal chip removing device is pulled back from the pipe P, the spherical magnet 34 has an opening 37, a joint inner wall 36, Since it hits the shutter device 31, the metallic chips adsorbed on the surface of the spherical magnet 34 fall into the pipe again, and eventually the purpose of removing the metallic chips dropped in the pipe cannot be achieved.
[0010]
In view of the above-mentioned problems, the present invention can be easily inserted into a pipe and pulled back from the pipe when removing the metal chips scattered in the pipe, and the adsorbed chips are reliably recovered. An object of the present invention is to provide a metallic chip removing device that can be used.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, a metallic chip removing device according to the present invention includes an outer pipe member having a diameter-expanded portion at a tip, and a rod-shaped core member slidably inserted into the outer pipe member, It is composed of a flexible connecting member fixed to the lower end portion of the rod-shaped core material, and a spherical magnet fixed to the lower end portion of the flexible connecting member,
When removing chips in the pipeline, insert the chip removal device into the pipeline from the opening while keeping the spherical magnet in the enlarged diameter portion of the outer pipe member, Push the rod-shaped core material in the pipe direction to expose the spherical magnet in the pipe line, and move the spherical magnet in the pipe line by the flexibility of the flexible connecting member to adsorb the chips, and after completion of the adsorption, the spherical shape It is characterized in that the chip removal operation is completed by pulling the rod-shaped core material so that the magnet is accommodated in the enlarged diameter portion and pulling back the chip removal device from the pipe.
[0012]
Further, the present invention has another feature in that a plurality of flexible connecting members having different flexibility are prepared, and the plurality of connecting members can be replaced with each other as necessary.
[0013]
[Action]
In the metal chip removing device according to the present invention, a rod-shaped core member is inserted into an outer pipe member having a diameter-expanded portion at the tip, and one end of a flexible coupling member is built in and fixed to a lower portion of the rod-shaped core member, and the flexible coupling member Since the spherical magnet that adsorbs the metal chips is fixed to the other end of the pipe, the spherical magnet is attached to the outer pipe member when removing the chips in the pipe using the metal chip removing device. It is possible to smoothly insert the chip removing device into the pipe through the opening while being accommodated in the enlarged diameter portion.
[0014]
Therefore, when the metallic chip removal device of the present invention is inserted into the pipe P through the opening, the magnet is prevented from being caught by the opening, the inner wall of the joint, and the shutter device, and the magnet is magnetic. Therefore, it is possible to prevent the metal chip removal device from being adsorbed by the hole portion of the tube, the inner wall of the joint, and the shutter device, thereby preventing various problems when the metal chip removing device is inserted into the conduit.
[0015]
In addition, when the metallic chip removal device is pulled back from the inside of the pipe P after adsorbing the metallic chips that have fallen into the pipe P, the spherical magnet is accommodated in the enlarged diameter portion of the outer pipe member. Therefore, the possibility that the metal chips adsorbed on the surface of the magnet again fall into the pipe is eliminated without the spherical magnet hitting the aperture, the inner wall of the joint, or the shutter device.
[0016]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing a main part of a metallic chip removing device according to the present invention, FIG. 2 is an explanatory view showing a use state of the metallic chip removing device of the present invention, and FIG. It is explanatory drawing which shows another use condition of the metal chip removal apparatus of this invention.
[0017]
In FIG. 1, the code | symbol 1 has shown the metallic chip removal apparatus of this invention. As shown in FIG. 1, the metallic chip removing device 1 fixes a spherical magnet 2 that adsorbs metallic chips to one end of a flexible connecting member 3, and the other end of the flexible connecting member 3 is a rod-shaped core material. The rod-shaped core material 5 is slidably inserted into an outer pipe member 6 having a diameter-expanded portion 4 capable of accommodating the spherical magnet 2 at the tip.
[0018]
The spherical magnet 2 is a manganese / aluminum / carbon magnet. The magnet has a spherical shape, and the entire spherical surface can adsorb metallic chips. In addition, it is also possible to use the magnet of another material as a magnet as needed, for example, W steel or Cr steel as magnet steel, or Co / W / Cr / C magnet steel.
[0019]
A plurality of flexible connecting members 3 having different flexibility are prepared, and the plurality of connecting members can be replaced with each other as necessary. For example, by preparing a flexible wire and a spring steel flat plate and providing a male / female screw coupling means (not shown) to the rod-shaped core member 5, the wire and the spring steel flat plate can be replaced with each other.
[0020]
The length of the rod-shaped core material 5 inserted in the outer pipe member 6 is longer than the length of the outer pipe member 6, and has a size that is easy for the operator to operate manually. An operation handle 8 is provided at the base end of the rod-shaped core material 5.
[0021]
FIG. 2 shows the usage state of the metallic chip removal device 1. When the metallic chip 11 in the pipe is removed using the metallic chip removing device 1, the spherical magnet 2 is kept in the expanded diameter portion 4 of the outer pipe member 6 and is metallic. The chip removing device 1 is inserted into the pipe P through the shutter device 12, the joint inner wall 13, and the opening 7. After insertion in the pipe, the rod-shaped core 5 is pushed in the pipe direction along the inner wall of the outer pipe member 6 by using the operation handle 8 to expose the spherical magnet 2 in the pipe line, and the spherical magnet 2 is moved in the pipe P. This adsorbs the chips 11. After completion of the adsorption, the rod-shaped core material 5 is pulled using the handle 8 so that the spherical magnet 2 having the chips adsorbed on the surface thereof is accommodated in the enlarged diameter portion 4, and the metallic chip removing device 1 is pulled back from the inside of the pipe P. This completes the chip removal operation.
[0022]
The use state of FIG. 2 shows a case where the opening 7 is provided on one side of the pipe P, and the flexible connecting member 3 used at that time is highly flexible, for example, a flexible wire It is. By using a highly flexible wire, as shown in FIG. 2, when the rod-shaped core member 5 is pushed into the tube, the spherical magnet 2 hangs down on the place where the chips fall off due to the gravity action. By moving the magnet 2 in the tube by the flexibility, it is possible to reliably adsorb the metal chips generated during the drilling operation.
[0023]
FIG. 3 shows another usage state of the metallic chip removing device 1. As shown in FIG. 3, the opening portions 7 are provided on both the upper and lower sides of the pipe line P, and the chips 11 generated during the drilling operation fall on the pipe lines below the both hole portions 7. The flexible connecting member 3 used at that time may have a lower flexibility than the case shown in FIG. 2, and for example, a spring steel flat plate can be used. At that time, as shown in FIG. 3, when the rod-shaped core material 5 is pushed out into the pipe, the spherical magnet 2 reaches the place where the chips are dropped, and the magnet 2 is moved in the pipe by the flexibility of the spring steel flat plate, thereby making a hole. It is possible to reliably adsorb metallic chips generated during the work.
[0024]
【The invention's effect】
In the metallic chip removing device of the present invention, a rod-shaped core member is inserted into an outer pipe member having a diameter-expanded portion at the tip, and one end of a flexible coupling member is built in and fixed to a lower portion of the rod-shaped core member, and the flexible coupling member Since the spherical magnet that adsorbs the metal chips is fixed to the other end of the pipe, the spherical magnet is attached to the outer pipe member when removing the chips in the pipe using the metal chip removing device. It is possible to smoothly insert the chip removing device into the pipe through the opening while being accommodated in the enlarged diameter portion.
[0025]
Therefore, when the metallic chip removal device of the present invention is inserted into the pipe P through the opening, the magnet is prevented from being caught by the opening, the inner wall of the joint, and the shutter device, and the magnet is magnetic. Therefore, it is possible to prevent the metal chips from being adsorbed to the opening portion of the pipe, and various problems can be prevented when the metal chip removing device is inserted into the pipe.
[0026]
In addition, when the metallic chip removal device is pulled back from the inside of the pipe P after adsorbing the metallic chips that have fallen into the pipe P, the spherical magnet is accommodated in the enlarged diameter portion of the outer pipe member. Therefore, the possibility that the metal chips adsorbed on the surface of the magnet again fall into the pipe is eliminated without the spherical magnet hitting the aperture, the inner wall of the joint, or the shutter device.
[0027]
By using the above-described metallic chip removing device of the present invention, the removing device can be smoothly inserted into the pipe and pulled back from the pipe, and the metallic chip scattered during the drilling operation. Can be reliably removed from the pipeline.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a cross section of a main part of a metallic chip removing device according to the present invention.
FIG. 2 is an explanatory view showing a usage state of the metallic chip removing device of the present invention.
FIG. 3 is an explanatory view showing another use state of the metal chip removing device of the present invention.
FIG. 4 is an explanatory view showing a usage state of the metallic chip removing device in the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Metallic chip removal apparatus 2 Spherical magnet 3 Flexible connection member 4 Expanded diameter part 5 Bar-shaped core material 6 Outer pipe member 8 Handle

Claims (2)

In the metal chip removing device that removes the chips scattered in the pipe line when the drilling operation is performed in the metal pipe line, the metal chip removing device has an enlarged diameter portion at the tip. An outer pipe member, a rod-shaped core member slidably inserted in the outer pipe member, a flexible connecting member fixed to the lower end portion of the rod-shaped core member, and fixed to the lower end portion of the flexible connecting member It consists of a spherical magnet that is
When removing chips in the pipeline, insert the chip removal device into the pipeline from the opening while keeping the spherical magnet in the enlarged diameter portion of the outer pipe member, Push the rod-shaped core material in the pipe direction to expose the spherical magnet in the pipe line, and move the spherical magnet in the pipe line by the flexibility of the flexible connecting member to adsorb the chips, The rod-shaped core material is drawn so that the magnet is accommodated in the enlarged diameter portion, and the chip removal operation is completed by pulling back the chip removal device from the pipe line. A device for removing chips. The said flexible connection member prepares the several thing from which flexibility differs, and this several connection member is mutually replaced as needed, The metal from the inside of the drilled pipe | tube of Claim 1 characterized by the above-mentioned. A device to remove swarf chips.

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