JP4143997B2 - Steel pipe inner wall jig that can be inserted from a small diameter - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a main pillar material foundation for removing foreign matter such as earth and sand, insect nests and dust and rust on the inner wall of a steel pipe in a steel tower composed of steel pipes. The present invention relates to a jig for a steel tube inner wall which can be inserted from a small diameter, which can be easily inserted from a long and narrow drainage groove of a water shielding plate attached at a position, and can efficiently perform a work on a steel pipe inner wall.
[0002]
[Prior art]
When steel pipes are used for the main pillars of tower-like steel structures for power transmission and radio (hereinafter referred to as steel towers), the steel pipes are bolted together so that there is no gap between the flanges. The water shielding plate is provided with a water shielding plate having a drainage groove at the lowermost part of the main pillar material, so that rainwater, garbage and the like cannot enter. However, when steel pipe towers are used for many years, insects or the like may enter through a drainage ditch provided in the water shielding plate to form a nest, or earth and sand or dust may enter and solidify. These deposits cause corrosion of the inner wall of the steel pipe.
[0003]
For these deposits, conventionally, a method has been adopted in which a wire, a rod, or the like is inserted from a drainage groove in a water shielding plate installed at the lowest position of the foundation and is manually removed. In addition, the foreign matter stuck to the inside of the steel pipe is pulverized by using a jig such as Utility Model No. 30563395, “a foreign matter crusher in the steel pipe that can be inserted from the basic water shielding plate attached to the main pillar material of the steel pipe tower”. The method has been taken.
[0004]
However, even if the inside of the steel pipe is cleaned with a tool having a thin tip such as a wire or a rod, there is a problem that only a biased portion can be cleaned. For this reason, it took a lot of labor and time to clean the entire surface of the steel pipe, but it took an enormous amount of time and labor to clean the steel pipe inside all the steel towers that were built with hundreds or thousands of units. Was necessary. For this reason, utility model No. 3056395, “a steel pipe foreign material crusher that can be inserted from a basic water shielding plate attached to the main column material of a steel pipe tower,” was developed, but it completely removes foreign matter inside the pipe and rust on the inner wall of the pipe. There was room for improvement in efficiency.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of such a problem, and when a steel pipe is used as a steel tower main column material, it is easier than the elongated drainage groove of the water shielding plate provided at the lowermost position of the main column material. The inside of the steel pipe can be inserted into the steel pipe, and can remove dirt, sand, insect nests and dirt deposited near the water shielding plate inside the steel pipe by crushing and removing the rust on the inner wall of the steel pipe cleanly and easily without unevenness. It is intended to provide a jig for use.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the steel pipe inner wall kelen jig that can be inserted from a small diameter according to the present invention is elastically deformed freely and is strong and easily elastic with a width of 3 to 30 mm at the tip of a tube having a diameter of 30 mm or less. A plurality of deformed and bent Y-shaped or umbrella-shaped leaf springs are attached symmetrically or evenly in the circumferential direction, and the tube has an inner diameter slightly thicker than the tube diameter and a diameter smaller than the width of the water shielding plate. After passing through the guide pipe, it is connected to a drive unit that gives a rotational force. The guide pipe is formed so that it can be bent at a substantially right angle in the middle of the guide pipe.
[0007]
Further, the edge of the leaf spring portion of the kelen jig on the inner wall of the steel pipe that can be inserted from a small diameter is processed into a saw blade shape.
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples with reference to the drawings.
[0008]
FIG. 1 is an example of a kelen jig for the inner wall of a steel pipe that can be inserted from a small diameter. The steel tube inner wall jig that can be inserted from a small diameter has a curved leaf spring end 1 and a freely elastically deformable and durable tube 2 joined together. Are joined symmetrically. The tube 2 is slightly thicker than the tube diameter and is passed through a guide pipe 3 formed so as to be bent at a right angle in the middle, and then joined to a drive unit 4 to which a rotational force is applied. A wire 8 is attached near the front end of the guide pipe 3, and the wire 8 extends in the direction of the drive unit 4 via a wire fixing bracket 9 attached near the rear end of the guide pipe.
[0009]
FIG. 2 is an example of a top view of the tip of a kelen jig on the inner wall of a steel pipe that can be inserted from a small diameter. By applying a saw blade 5 to the edge of the bent leaf spring 1, the saw blade of the leaf spring portion easily crushes earth and sand and honeycombs accumulated in the pipe, and rust generated on the inner wall E of the pipe. Can be easily shaved.
[0010]
FIG. 3 is a schematic view of the drainage groove C of the water shielding plate B provided in the steel pipe A at the lowermost part of the main pillar material of the steel pipe tower. The guide pipe 3 used for the kelen jig on the inner wall of the steel pipe, which can be inserted from a small diameter, has a diameter smaller than the width of the drainage groove C of the water shielding plate B, and can be bent in the middle of the guide pipe 3 at a substantially right angle. Is formed. The steel tube inner wall kelen jig that can be inserted from a small diameter is selected so that the leaf spring 1 at the tip is easily deformed, so that the width of the leaf spring is narrower than the width of the drainage groove C provided in the water shielding plate. Thus, the leaf spring portion 1 can be easily deformed and inserted into the pipe from the drainage groove C of the water shielding plate provided in the steel pipe A at the lowermost part of the main pillar material of the steel pipe tower.
[0011]
FIG. 4 shows a steel pipe inner wall that can be inserted from a small diameter by inserting a jig for the inner wall from the drainage groove C of the water shielding plate B, bending the guide pipe 3 at a substantially right angle, and the legs of the steel pipe A as the main pillar of the steel pipe tower. It is a state where it installed in the steel pipe inside D. The leaf spring 1 arranged at the tip of the keren jig is deformed according to the diameter of the steel pipe inner wall E, and a part of the leaf spring is in close contact with the steel pipe inner wall E. The length at which the leaf spring 1 and the steel pipe inner wall E are in close contact with each other can be easily adjusted by the elastic force of the leaf spring and the length and shape of the leaf spring with respect to the steel tube diameter. Further, by arranging the leaf springs symmetrically or at equal intervals at the tip of the tube, the tube is naturally arranged at the center of the steel pipe if the kelen jig is inserted into the pipe.
[0012]
The keren jig allows a freely deformable and strong tube 2 connected to the leaf spring 1 to pass through the guide pipe 3, so that the tube 2 is a drain groove C of the water shielding plate at the bottom of the main column material. Therefore, the leaf spring portion 1 at the tip of the keren jig can be easily and freely moved in the longitudinal direction inside the steel pipe D.
[0013]
When the plate spring 1 of the keren jig is inserted into the steel pipe inside D and in close contact with the steel pipe inner wall E, a rotational force around the longitudinal axis of the tube is applied from the drive unit 4 outside the steel pipe. The leaf spring 1 attached to the distal end of the tube rotates while scraping a portion in close contact with the steel pipe inner wall E, and the steel pipe inner wall E is made clean. In addition, since the tube 1 rotates within the guide pipe, the tube can be safely operated without contacting the steel tower main column steel pipe A or the water shielding plate B.
[0014]
And the effect of a keren work can be changed by changing the shape and length of the leaf | plate spring 1 attached to a keren jig with work content and a steel pipe diameter.
[0015]
For example, as shown in FIG. 5, if the leaf spring of the keren jig is curved in an upward convex umbrella shape, the leaf spring tip portion is in close contact with the steel pipe inner wall E, although the range is narrow. Keren on the inner wall E of the steel pipe is intensively formed by the elastic recovery force of the leaf spring and the rotational centrifugal force applied from the drive unit 4. Moreover, it can respond to the thing from the thing with a thin diameter of the steel pipe A to a thick thing.
[0016]
Conversely, for example, as shown in FIG. 6, if the leaf spring of the keren jig is curved in a convex Y shape, the leaf spring is in close contact with the exchange inner wall in a wide range. Keren of the inner wall E of the steel pipe in a wide range can be formed at a time by the centrifugal force generated by the rotational force applied from the drive unit 4.
[0017]
Furthermore, if the edge of the leaf spring portion 1 is processed into a saw blade 5 shape, the saw blade of the leaf spring portion easily crushes the earth and sand and the honeycomb that have accumulated in the tube, and the rust generated on the inner wall of the tube Can be easily shaved.
[0018]
【The invention's effect】
The present invention produces the effects as described below by performing the procedure described above.
[0019]
As described above, the steel pipe inner wall kelen jig that can be inserted from the small diameter of “Claim 1” can be easily inserted into the pipe through the drainage groove provided in the water shielding plate of the steel pipe tower. The leaf spring provided at the tip of the jig is elastically deformed and is in close contact with the inner wall of the steel pipe. In this state, a rotational force is applied in the circumferential direction of the steel pipe. Sediment can be crushed and kelen on the inner wall of the steel pipe. Moreover, since the effect of the intimate area of the inner wall of the steel pipe and the centrifugal force can be changed by adjusting the bending shape and length of the leaf spring, it can be applied in accordance with the steel pipe diameter and the kelen range.
[0020]
In addition, by processing the edge of the leaf spring of the steel pipe inner wall kelen jig that can be inserted from a small diameter into a saw blade shape, it is easier to remove dirt and dust accumulated in the steel pipe, and the efficiency of the kelen work on the inner wall of the steel pipe is Go up. Also, in the case where the leaf spring of the keren jig is bent in a convex Y shape, the recovery elastic force of the leaf spring can hardly be expected, but by making the edge of the leaf spring a saw blade, Keren can be effectively formed in the tube even with only the rotational force.
[Brief description of the drawings]
FIG. 1 is an overall view of a kelen jig for an inner wall of a steel pipe that can be inserted from a small diameter.
FIG. 2 is a plan view of a kelen jig on the inner wall of a steel pipe that can be inserted from a small diameter.
FIG. 3 is a schematic view of a water shielding plate used in a steel pipe tower.
FIG. 4 is a state diagram in which a steel pipe inner wall jig that can be inserted from a small diameter is inserted from a drain groove of a water shielding plate and installed in a leg steel pipe of a steel pipe tower main column.
FIG. 5 is a partial view of a kelen jig on the inner wall of a steel pipe to which a leaf spring curved in a convex umbrella shape is attached.
FIG. 6 is a partial view of a kelen jig for an inner wall of a steel pipe to which a leaf spring curved in a downwardly convex Y shape is attached.
[Explanation of symbols]
A Steel pipe member B Water shielding plate C Drainage groove D Steel pipe inside E Steel pipe inner wall 1 Leaf spring 2 Tube 3 Guide pipe 4 Drive section 5 Saw blade 6 Plate 7 curved upward in a convex umbrella shape Y convex below Leaf spring curved into a wire 8 Wire 9 Wire fixing bracket

Claims (1)

A plurality of leaf springs that are elastically deformed freely and are strong and have a diameter of 30 mm or less, and that are easily elastically deformed with a width of 3 to 30 mm and curved in an umbrella shape or Y-shape are symmetrical or even in the circumferential direction. Mounting at intervals,
The leaf spring is processed into a sawtooth edge,
The tube is passed through a guide pipe having an inner diameter slightly thicker than the tube diameter, and then connected to a drive unit that gives rotational force;
The guide pipe is formed so that it can be bent at a substantially right angle in the middle of the guide pipe,
A steel pipe inner wall jig that can be inserted from a small diameter.

Images