JP4156496B2 - Jig for steel pipe inner surface that can be inserted from small hole - Google Patents

Description

  The present invention relates to a steel pipe inner surface kelen jig that can be inserted through a small hole, and in particular, a main column member that is attached to a main column member in order to clean the inner surface of a steel pipe such as an overhead power transmission line tower composed of a steel pipe. The present invention relates to a steel pipe inner surface kelen jig that can be easily inserted from a drain hole (small hole) of a water plate.

  In the tower for overhead transmission lines, the main pillar material is made of steel pipe, insects enter through the drain holes (small holes) of the waterstop plate attached to the base position of the main pillar materials, Sediment and garbage may enter through the hole and harden and stick. In addition, the inner surface of the steel pipe may rust. Therefore, conventionally, a wire or a rod is inserted from the drain hole of the water stop plate to remove foreign matters such as earth and sand, insect nests and dust, and rust on the inner surface of the steel pipe.

However, even if the steel pipe is cleaned with a tool with a thin tip, such as a wire or a bar, only the biased part can be cleaned. Therefore, as a jig for efficiently cleaning the steel pipe, those disclosed in the following patent documents Has been proposed.
Utility Model No. 3056395 JP 2003-200124 A

  Patent Document 1 (Utility Model No. 3056395) discloses that a jig portion composed of a pair of curved leaf springs having different lengths and a metal tube having elasticity are joined to each other, and the tube is protruded through the guide tube. Disclosed is a steel pipe foreign matter crusher capable of crushing lump, such as earth and sand, honeycomb, and dust in a steel pipe by applying a rotational force from a drive unit attached to the end. However, although such a steel pipe foreign matter crusher may be effective for crushing foreign matters, there is still room for improvement in efficiency in order to remove rust on the inner surface of the steel pipe.

  In Patent Document 2 (Japanese Patent Laid-Open No. 2003-200124), an end portion of a curved leaf spring and a tube that is freely elastically deformed and strong are joined, and a plurality of leaf springs are symmetrical about the tube. The tube is passed through a guide pipe having a slightly larger inner diameter than the tube diameter, and is then joined to a driving portion to which a rotational force is applied, and a steel pipe inner wall jig is disclosed. However, in such a kelen jig, there is still room for improvement in efficiency in order to remove the rust on the inner surface of the steel pipe because the leaf spring is in linear contact with the inner wall of the steel pipe. Further, in order to stand the plate spring vertically in the steel pipe, a wire and a wire fixing bracket are required, and the structure becomes complicated.

  The object of the present invention is that the main pillar material can be inserted from a small hole such as a drain hole provided in a water stop plate of an overhead power transmission line tower composed of steel pipes, An object of the present invention is to provide a steel pipe inner surface kelen jig that can remove deposits such as nests and dust and can efficiently rust the inner surface of a steel tower.

The steel pipe inner surface kelen jig (1) that can be inserted from the first small hole of the present invention has a wire rope (11) whose one end is crimped and stopped by a first crimping stop member (16), and the wire First and second wire rope tip portions (12, 13) whose end portion on the rope (11) side is crimped together with the other end portion of the wire rope (11) by the second crimping stop member (17). And the third and fourth ends of the first and second wire rope tip portions (12, 13) side together with the other ends of the first and second wire rope tip portions (12, 13). And the first and second brush-like parts (14, 15) that are crimped and secured by the crimping and fastening members (18, 19), and the wire rope (11) is composed of six strands, And second wire rope tip (1 , 13) is formed by cutting two of the six strands into four pieces and bundling them two by two, and the first and second brush-like parts (14, 15) are made up of two of the six strands. It is characterized in that it is constituted by unrolling the tips of four pieces that are cut off and bundled two by two .
Here, the first crimping stop member (16) may be attached to the impact drill (40), and the wire rope (11) may be rotated at a low speed by the impact drill (40).
More specifically, the wire rope (11) is preferably Ru is rotating at low speed per minute 550 rotates less by the impact drill (40).
Furthermore, when performing the kelen work on the inner surface of the steel pipe using the steel pipe inner surface kelen jig (1), the pipe portion (22) of the safety device (20) in which the wire rope (11) is fixed to the steel pipe. preferably, the threaded and to be inserted into the steel tube.
In addition, the pipe part (22) of the said safety device (20) shall consist of a slide type inner pipe (23) and an outer side pipe (24) .

The steel pipe inner surface kelen jig that can be inserted through the small hole of the present invention has the following effects.
(1) Since the tip of the steel pipe inner surface kelen jig is made into a brush shape, the contact area between the tip of the steel pipe inner surface kelen jig and the inner surface of the steel pipe can be increased. An object can be removed efficiently or rust on the inner surface of the steel pipe can be efficiently removed.
(2) By changing the length of the wire rope of the steel pipe inner surface kelen jig or changing the number of brush-like parts provided at the tip of the steel pipe inner surface keren jig according to the part to be worked on, It is possible to uniformly roughen the working range of the inner surface of the steel pipe, to efficiently remove deposits solidified inside the steel pipe, and to efficiently remove rust on the inner surface of the steel pipe.

  The main pillar material can be inserted through a small hole such as a drain hole provided in the water stop plate of an overhead power transmission line tower composed of steel pipes, and sediment such as earth and sand, insect nests, and dust solidified inside the steel pipes The purpose of removing the object and efficiently removing the rust on the inner surface of the steel pipe was realized by making the tip of the steel pipe inner surface kelen jig a brush shape.

Hereinafter, an embodiment of a steel pipe inner surface kelen jig that can be inserted from a small hole according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, a steel pipe inner surface kelen jig 1 according to a first embodiment of the present invention includes a wire rope 11, first and second wire rope tip portions 12, 13, and first and second. Brush-like parts 14 and 15 and first to fourth crimping stop members 16 to 19.

Here, the wire rope 11 has a diameter of 8 mm and a length of 1200 mm, and is composed of six strands. Further, the ends of the wire rope 11 opposite to the first and second wire rope tip portions 12 and 13 are crimped by a first crimping stop member 16.
The 1st and 2nd wire rope front-end | tip parts 12 and 13 are comprised by bundling two strands by cutting off two strands of 6 strands which comprise the wire rope 11. Further, the end portions of the first and second wire rope tip portions 12 and 13 on the wire rope 11 side are crimped together with the other end portion of the wire rope 11 by the second crimping stop member 17. The lengths of the first and second wire rope tip portions 12 and 13 are 200 mm.
The 1st and 2nd brush-like parts 14 and 15 are comprised by unwinding the front-end | tip of what cut | disconnected 6 strand which comprises the wire rope 11, and bundled it into 4 pieces. (See FIG. 2). Further, the end portions of the first and second brush-like portions 14 and 15 on the first and second wire rope tip portions 12 and 13 side are the other ends of the first and second wire rope tip portions 12 and 13. Together with the end portions, the third and fourth crimping stop members 18 and 19 are crimped. The length of the 1st and 2nd brush-like parts 14 and 15 is 100 mm.

Next, by using the steel pipe inner surface keren jig 1, an overhead transmission line having a φ (inner diameter) of 300 mm and a construction range (kelen work range) of 1000 mm above the flange 31 as shown in FIG. A method of performing the keren work of the steel tower 30 (hereinafter referred to as “steel tower 30”) will be described.
The first and second brush-like parts 14 and 15 of the steel pipe inner surface kelen jig 1 are inserted into the tower 30 through one of the drain holes 32 provided in the flange 31 of the tower 30. As shown in FIG. 3 (b), the steel pipe inner surface kelen jig 1 inserted into the steel tower 30 is provided with a groove 34 provided on the upper surface of the water stop plate 33 (two grooves 34 intersect each other). After proceeding inside, it proceeds upward along the inner surface of the tower 30.

Here, after insertion into the steel tower 30, for example, when the portion of the wire rope 11 on the first crimping stop member 16 side comes out of the steel tower 30 by 200 mm or more, the safety device 20 shown in FIGS. It is used so that an operator is not caught in the wire rope 11 coming out of the steel tower 30 when the wire rope 11 is rotated during the keren work as will be described later.
The safety device 20 includes a U-shaped fixing portion 21 having a length of 120 mm and a width of 50 mm, and a pipe portion 22 including a sliding inner pipe 23 and an outer pipe 24, and a wire rope is provided in the inner pipe 23. 11 is used. Moreover, the safety device 20 is fixed to the flange 31 by attaching the fixing portion 21 to the flange 31 of the tower 30 using fastening bolts provided on both side surfaces of the fixing portion 21.
One end of the outer pipe 24 is joined to the fixed portion 21, and the inner pipe 23 has a length of 350 mm and is longer than the outer pipe 24 having a length of 320 mm. Therefore, when the inner pipe 23 is housed in the outer pipe 24, the end of the inner pipe 23 on the fixed portion 21 side protrudes from the joint between the fixed portion 21 and the outer pipe 24.
In addition, the safety device 20 does not necessarily need to be used when the part where the wire rope 11 exits from the steel tower 30 is less than 200 mm.

  Subsequently, as shown in FIG. 5, after the first crimping stop member 16 of the steel pipe inner surface kelen jig 1 is mounted on the impact drill 40, the impact drill 40 is driven to rotate the wire rope 11. As a result, the first and second wire rope tip portions 12 and 13 and the first and second brush-like portions 14 and 15 of the steel pipe inner surface kelen jig 1 are separated from the portion of the second crimping stop member 17. It rotates along the inner surface of the tower 30 while opening. As a result, the tip ends of the first and second brush-like portions 14 and 15 rotate along the inner surface of the steel tower 30 while rubbing the inner surface of the steel tower 30, so that earth and sand and insect nests solidified inside the steel tower 30 can be obtained. In addition, it is possible to remove deposits such as garbage and rust on the inner surface of the tower. Here, since the front-end | tip part of the jig 1 for steel pipe inner surface keren is the 1st and 2nd brush-like parts 14 and 15, the 1st and 2nd brush-like parts 14 and 15 and the inner surface of the tower 30 Since the contact area can be increased, deposits and rust can be efficiently removed.

  When the impact drill 40 is driven to rotate the wire rope 11, if the steel pipe inner surface kelen jig 1 is rotated at a high speed, the wire rope 11 inserted into the steel tower 30 is kinked, and the steel tower 30. Steel pipe inner surface keren jig 1 is rotated at a low speed (for example, for example, the first and second brush-like portions 14 and 15 may not contact the inner surface of the steel tower 30). In the steel pipe inner surface keren jig 1 shown in FIG. 1, it is preferably made 550 revolutions per minute or less).

  In addition, when the kelen work in the upper part of the kelen work range of the steel tower 30 is completed, the wire rope 11 is configured in the same manner as the steel pipe inner face kelen jig 1 except that the length of the wire rope 11 is 900 mm. By performing the kelen work using the steel pipe inner surface kelen jig, deposits and rust attached to the intermediate part of the kelen work range of the steel tower 30 can be more efficiently removed.

Next, a steel pipe inner surface kelen jig 100 according to a second embodiment of the present invention will be described with reference to FIGS.
The steel pipe inner surface kelen jig 100 according to the present embodiment is for removing deposits and rust attached to the upper surface of the water stop plate 33 of the steel tower 30 and the inner surface of the steel tower 30 near the water stop plate 33. FIG. As shown in FIG. 2, a wire rope 101, a brush-like portion 102, and first and second crimping stop members 103 and 104 are provided.
Here, the wire rope 101 has a diameter of 8 mm and a length of 350 mm, and is composed of six strands. Further, the end of the wire rope 101 opposite to the brush-like portion 102 is crimped by a first crimping stop member 103.
The brush-like part 102 is configured by unwinding the ends of the six strands constituting the wire rope 101 by about 150 mm (see FIG. 7). Further, the end of the brush-like portion 102 on the wire rope 101 side is crimped together with the other end of the wire rope 101 by the second crimping stop member 104.

Next, a method for performing the keren work on the steel tower 30 using the steel pipe inner surface keren jig 100 will be described.
The brush-like portion 102 side of the steel pipe inner surface kelen jig 100 is inserted into the steel tower 30 through the drain hole 32 of the steel tower 30.
Subsequently, after the first crimping stop member 103 of the steel pipe inner surface keren jig 100 is mounted on the impact drill 40 (see FIG. 5), the impact drill 40 is driven to rotate the wire rope 101. Thus, by rubbing the upper surface of the water stop plate 33 of the tower 30 and the inner surface of the tower 30 in the vicinity of the water stop plate 33 while the tip of the brush-like portion 102 of the steel pipe inner surface kelen jig 100 rotates, these portions are rubbed. Remove deposits and rust on the surface. Here, since the tip of the steel pipe inner surface kelen jig 100 is a brush-shaped portion 102, the contact area between the brush-shaped portion 102 and the upper surface of the water stop plate 33 and the inner surface of the steel tower 30 can be increased. Therefore, deposits and rust can be removed efficiently.

  In the above description, the case where φ is 300 mm and the work range of the steel tower 30 having a work range of 1000 mm above the flange 31 is performed is described as an example. However, the present invention is not limited thereto, and for example, φ is 300 to 400 mm and the work range. The steel pipe inner surface kelen jig of the present invention can also be used to perform the kelen work of a steel tower having a diameter of 1000 to 12000 mm above the flange 31.

  As described above, the steel pipe inner surface kelen jig that can be inserted from the small hole of the present invention is provided on a water stop plate attached to a main pillar material such as an overhead power transmission line tower composed of a steel pipe. It can be used to clean the inner surface of a steel pipe by inserting it through a small hole such as a drain hole.

It is a figure which shows the structure of the jig for steel pipe inner surface keren by the 1st Example of this invention. Example 1 It is a figure for demonstrating the shape of the 1st and 2nd brush-like parts 14 and 15 shown in FIG. Example 1 It is a figure for demonstrating an example which performs a kelen work using the jig 1 for steel pipe inner surface kelen shown in FIG. 1, (a) is a figure which shows the part of the construction range of a steel tower, (b) is a steel tower It is a figure which shows the groove | channel provided in the water stop plate. Example 1 It is a figure which shows the structure of a safety device, (a) is a figure when an inner pipe is accommodated in an outer pipe, (b) is a figure when an inner pipe is pulled out from an outer pipe. Example 1 It is a figure for demonstrating an example which performs a kelen work using the jig 1 for steel pipe inner surface keren shown in FIG. Example 1 It is a figure which shows the structure of the jig for steel pipe inner surface keren by the 2nd Example of this invention. (Example 2) It is a figure for demonstrating the shape of the brush-shaped part 102 shown in FIG. (Example 2)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,100 Steel pipe inner surface kelen jig | tool 11,101 Wire rope 12,13 Wire rope front-end | tip part 14,15,102 Brush-like part 16-19,103,104 Crimp stop member 20 Safety device 21 Fixing part 22 Pipe part 23 Inside Pipe 24 Outer pipe 30 Steel tower 31 Flange 32 Drain hole 33 Water stop plate 34 Groove 40 Impact drill

Claims (5)

A wire rope (11) whose one end is crimped by a first crimping stop member (16);
The first and second wire rope tip portions (12, 12) whose end portions on the wire rope (11) side are crimped together with the other end portion of the wire rope (11) by the second crimping stop member (17). 13)
The ends of the first and second wire rope tip portions (12, 13) are the third and fourth crimps together with the other ends of the first and second wire rope tip portions (12, 13). First and second brush-like portions (14, 15) that are crimped and stopped by a stop member (18, 19) ,
The wire rope (11) is composed of six strands,
The first and second wire rope tip portions (12, 13) are formed by cutting two of the six strands into four pieces and bundling each two pieces,
The first and second brush-like parts (14, 15) are formed by unscrewing the two ends of the six strands, cutting them into four pieces, and bundling two pieces each.
A steel pipe inner surface kelen jig that can be inserted through a small hole. The first crimp stop member (16) is attached to the impact drill (40), the wire rope by the impact drill (40) (11) is rotating at low speed, according to claim 1, wherein the Jig for steel pipe inner surface that can be inserted from a small hole. The wire rope (11) is rotating at low speed per minute 550 rotates less by the impact drill (40), that claims 2 inner surface of the steel pipe Keren jig can be inserted from the small hole of wherein. When performing the kelen work on the inner surface of the steel pipe using the steel pipe inner surface kelen jig (1), the wire rope (11) is passed through the pipe portion (22) of the safety device (20) fixed to the steel pipe. has been inserted into the steel pipe, steel pipe inner surface Kellen jig can be inserted from the small hole of any one of claims 1 to 3, characterized in that. The pipe portion of the safety device (20) (22) consists of sliding of the inner pipe (23) and the outer pipe (24), for the steel pipe inner surface Keren that can be inserted from the pores of claim 4, wherein the jig.

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