Fitting type joint pole

Abstract

A fitting type joint pole 100 according to the present disclosure is formed by fitting together one end part of one pipe and the other end part of another pipe, for each of a plurality of pipes having a cylindrical shape. A guide taper part 4 whose diameter is reduced toward one end of the pipe is formed at one end part of said pipe, and the other end part of another pipe has an inner diameter larger than the outer diameter of the guide taper part 4 and houses the guide taper part 4.

Description

Interlocking extension columns

[0001] The present disclosure relates to an interlocking type joint column that can improve construction efficiency.

[0002] In recent years, a lineup of extension poles has emerged that function similarly to a single utility pole by joining multiple divided steel or concrete pipes. Regarding such extension poles, a mating joining method is known as a typical method for joining cylindrical pipes (see Non-Patent Document 1).

[0003] In the case of the interlocking joining method, it is necessary to align and sequentially interlock the other pipes with the lower pipe installed on the ground, but such alignment takes time and requires skill.

[0004] Nippon Steel Construction Materials Corporation, website [online], [searched May 31, 2024], Internet <URL: https: / / www.ns-kenzai.co.jp / hltubular-c.html>

[0005] Therefore, an object of the present disclosure is to provide an interlocking joint column that allows for easy alignment when interlocking.

[0006] In order to achieve the above object, the interlocking type connecting column of the present disclosure employs a technique in which one end of one of the mating pipes is provided with a tapered section whose diameter decreases as it approaches the one end of the one pipe.

[0007] Specifically, the interlocking type connecting column of the present disclosure is a connecting column formed by interlocking one end of one tube with the other end of the other tube among a plurality of tubes formed in a cylindrical shape, wherein the one end of the one tube is formed with a first tapered portion that narrows in diameter as it approaches the one end of the one tube, and the other end of the other tube has an inner diameter larger than the outer diameter of the first tapered portion and accommodates the first tapered portion.

[0008] Furthermore, a second tapered portion that abuts against the other end of the other pipe may be formed at a portion of the one end of the one pipe that is different from the first tapered portion.

[0009] The taper rate of the first tapered portion may be greater than the taper rate of the second tapered portion.

[0010] Specifically, the construction method of the interlocking type joint column disclosed herein uses the above-mentioned interlocking type joint column to interlock one end of one pipe with the other end of another pipe among a plurality of pipes formed in a cylindrical shape.

[0011] The above disclosures can be combined as much as possible.

[0012] According to the present disclosure, alignment during mating can be easily performed.

[0013] Fig. 1 is a diagram illustrating a joining mode of an interlocking type joint column according to an embodiment. Fig. 2 is a diagram illustrating the configuration of a lower pipe according to an embodiment. Fig. 3 is a diagram illustrating the construction of a joint column according to an embodiment. Fig. 4 is a diagram illustrating the construction of a joint column according to an embodiment. Fig. 5 is a diagram illustrating the configuration of an intermediate pipe according to an embodiment.

[0014] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below. These implementation examples are merely illustrative, and the present disclosure can be implemented in various forms with various modifications and improvements based on the knowledge of those skilled in the art. Note that components with the same reference numerals in this specification and drawings indicate the same components.

[0015] 1 and 2, the configuration of the interlocking type extension column 100 according to the embodiment of the present disclosure will be described. In the following description, unless otherwise specified, the interlocking type extension column 100 and the pipes that make up the interlocking type extension column 100 will be described based on a situation in which they extend in the vertical direction.

[0016] As shown in FIG. 1 , the interlocking extension pole 100 is configured to function similarly to a single utility pole by stacking a first intermediate pipe 20, a second intermediate pipe 30, and an upper pipe 40 in order from bottom to top on a lower pipe 10 buried in the ground A. That is, the interlocking extension pole 100 is formed by interlocking one end of one of a plurality of cylindrically shaped pipes with the other end of the other pipe. In this embodiment, the interlocking extension pole 100 is configured by joining four divided pipes together. However, the number of divisions of the interlocking extension pole to which the technology of the present disclosure is applied is not limited thereto, and the technology of the present disclosure is applicable regardless of the number of divisions of the interlocking extension pole. The technology of the present disclosure is also applicable to traffic lights, street lights, and the like, which are configured using multiple pipes.

[0017] Each pipe may be a steel pipe or a concrete pipe. However, the material of each pipe is arbitrary. For example, each pipe may be designed using various materials depending on the situation or scene. Furthermore, each pipe may be made of a different material.

[0018] As shown in Figure 2, the lower pipe 10 has a hollow cylindrical shape as a whole (see dotted line) and includes a first pipe section 1, a second pipe section 2, a contact tapered section 3, and a guide tapered section 4. The second pipe section 2, the contact tapered section 3, and the guide tapered section 4 function as "one end of one pipe." The contact tapered section 3 functions as the "second tapered section," and the guide tapered section 4 functions as the "first tapered section." The first pipe section 1 functions as "the other end of the other pipe."

[0019] The first pipe 1 and the second pipe 2 are cylindrical and extend in the vertical direction. The inner diameter of the first pipe 1 is larger than the outer diameter of the guide tapered portion 4, and the first pipe 1 accommodates the guide tapered portion 4. The outer diameter of the second pipe 2 is smaller than the outer diameter of the first pipe 1. As shown by the dotted line in Figure 2, the inner diameter of the second pipe 2 is smaller than the inner diameter of the first pipe 1.

[0020] The abutting tapered section 3 is provided to connect the upper end of the first pipe section 1 and the lower end of the second pipe section 2. The abutting tapered section 3 has a tapered shape in which the outer diameter and inner diameter become smaller toward the top. The guide tapered section 4 is provided at the upper end of the second pipe section 2. In other words, the abutting tapered section 3 is provided at a portion of one end of the lower pipe 10 (the second pipe section 2, the abutting tapered section 3, and the guide tapered section 4) separate from the guide tapered section. The guide tapered section 4 has a tapered shape in which the outer diameter and inner diameter become smaller toward the top. In other words, the diameter of the guide tapered section 4 decreases toward the one end of the lower pipe 10.

[0021] Returning to Figure 1, the first intermediate pipe 20 and the second intermediate pipe 30 have the same configuration as the lower pipe 10. Specifically, the first intermediate pipe 20 and the second intermediate pipe 30 each have a first pipe portion 1, a second pipe portion 2, a contact tapered portion 3, and a guide tapered portion 4.

[0022] Unlike the lower pipe 10, the first intermediate pipe 20, or the second intermediate pipe 30, the upper pipe 40 has only the first pipe portion 1. In other words, the upper pipe 40 is not provided with any tapered portions. However, the scope of the present disclosure is not limited to this, and the upper pipe 40 may also be provided with the second pipe portion 2, the abutting tapered portion 3, and the guide tapered portion 4. This allows for appropriate response when it becomes necessary to suddenly fit another pipe from above the upper pipe 40.

[0023] Furthermore, the lengths of the first pipe section 1, the second pipe section 2, the abutment taper section 3, or the guide taper section 4 may be different between the lower pipe 10, the first intermediate pipe 20, the second intermediate pipe 30, and the upper pipe 40.

[0024] As shown in Fig. 1, the outer diameters of the second pipe section 2 and the guide taper section 4 of each pipe (lower pipe 10, first intermediate pipe 20, second intermediate pipe 30) are smaller than the inner diameter of the first pipe section 1 of each pipe (first intermediate pipe 20, second intermediate pipe 30, upper pipe 40). In particular, the guide taper section 4 has a tapered shape that tapers upward from the upper end of the second pipe section 2, so that when the pipes are mated, the guide taper section 4 is spaced further from the inner circumferential surface of the first pipe section 1 than the second pipe section 2. Furthermore, when the pipes are mated, the distance by which the guide taper section 4 is spaced from the inner circumferential surface of the first pipe section 1 increases upward.

[0025] With this configuration, when the pipes are mated by bringing the first pipe 1 close to the guide taper section 4 from above (in other words, by inserting the guide taper section 4 from below into the inner peripheral surface of the first pipe 1), a gap is generated between the guide taper section 4 and the inner peripheral surface of the first pipe 1, making it easy to align the pipes. In other words, the pipes can be mated so that the first pipe 1, which has a large inner diameter, covers the guide taper section 4, which has a small diameter, from above, making it easy to align the pipes.

[0026] Furthermore, since the guide tapered portion 4 is tapered upward, it is possible to suppress axial misalignment of each pipe. The construction method of the interlocking type joint column 100 will be described later.

[0027] Furthermore, when the pipes are interlocked, the lower end of the first pipe section 1 of each pipe (first intermediate pipe 20, second intermediate pipe 30, upper pipe 40) abuts against the contact tapered section 3 of each pipe (lower pipe 10, first intermediate pipe 20, second intermediate pipe 30). Because the contact tapered section 3 has a tapered shape that narrows toward the top, the pressure between the first pipe section 1 and the contact tapered section 3 increases, allowing the pipes to be interlocked appropriately. Even if each pipe is made of concrete, the contact tapered section 3 may be made of steel. However, there is no limitation on the combination of materials for all parts of each pipe, and the combination of materials for each pipe is arbitrary. For example, each pipe can be designed using a combination of materials freely depending on the situation or scene.

[0028] (Method of constructing a joint column) A method of constructing the interlocking type joint column 100 according to an embodiment of the present application will be described with reference to Figures 3 and 4. Figures 3 and 4 show a case where a heavy machine 300 is used to engage a first intermediate pipe 20 with a lower pipe 10 whose lower portion is buried in the ground A.

[0029] The heavy equipment 300 is a gripping-type pole erection vehicle that grips and installs each pipe of the interlocking type joint column 100. The worker operates the heavy equipment 300 to grip the first intermediate pipe 20. The worker operates the heavy equipment 300 to bring the first pipe section 1 of the first intermediate pipe 20 close to the guide taper section 4 of the lower pipe 10 from above, and inserts the guide taper section 4 into the inner surface of the first pipe section 1 from below. Note that, although the present embodiment describes a case in which the heavy equipment 300 is operated to grip each pipe, the scope of the present disclosure is not limited thereto. The interlocking type joint column 100 can be installed using any heavy equipment or device. For example, the interlocking type joint column 100 can also be installed using a hole-digging pole erection vehicle or a bucket vehicle.

[0030] 4, a gap is generated between the guide tapered portion 4 of the lower tube 10 and the first tube portion 1 of the first intermediate tube 20. In this way, the tubes can be fitted together so that the first tube portion 1, which has a larger inner diameter, covers the guide tapered portion 4, which has a smaller diameter, from above, making it easy to align the tubes.

[0031] Thereafter, the lower end of the first pipe section 1 of the first intermediate pipe 20 comes into contact with the contact tapered section 3 of the lower pipe 10. Because the contact tapered section 3 has a tapered shape that narrows toward the top, the pressure between the first pipe section 1 and the contact tapered section 3 increases, allowing the pipes to be fitted together appropriately.

[0032] Similarly to the above, the second intermediate tube 30 can be fitted to the first intermediate tube 20, and the upper tube 40 can be fitted to the second intermediate tube 30.

[0033] (Example of Intermediate Pipe) An example of an intermediate pipe 50 constituting a fitting-type extension column according to the present disclosure will be described with reference to Figure 5. Note that in this example, the following configuration is applied to the intermediate pipe 50 as an example, but the following configuration can also be applied to the lower pipe and upper pipe. Furthermore, the number of divisions of a fitting-type extension column constituted by the intermediate pipe 50 and the like is arbitrary.

[0034] The intermediate tube 50 has a hollow cylindrical shape as a whole. The intermediate tube 50 includes a first tube portion 1, as in the above embodiment. The intermediate tube 50 includes a second tube portion 2A, a contact tapered portion 3A, and a guide tapered portion 4A, instead of the second tube portion 2, abutting tapered portion 3, and a guide tapered portion 4 in the above embodiment. The intermediate tube 50 also includes a tapered portion 5 and a third tube portion 6. The second tube portion 2A, abutting tapered portion 3A, and guide tapered portion 4A function as "one end of one tube." The abutting tapered portion 3A functions as the "second tapered portion," and the guide tapered portion 4A functions as the "first tapered portion." The first tube portion 1, tapered portion 5, and third tube portion 6 function as "the other end of the other tube."

[0035] The second pipe portion 2A, the contact tapered portion 3A, and the guide tapered portion 4A each have a tapered shape that narrows upward at a predetermined taper rate. The taper rate is calculated using the following formula: Taper rate = (diameter of the large diameter portion - diameter of the small diameter portion) / 100

[0036] In this embodiment, the taper ratio of the second pipe portion 2A is designed to be approximately 1 / 75, and the taper ratio of the abutting tapered portion 3A is designed to be 1 / 25. In other words, the taper ratio of the abutting tapered portion 3A is greater than that of the second pipe portion 2A. Note that the taper ratios of the abutting tapered portion 3A may be any value as long as they are designed to be greater than that of the second pipe portion 2A. By providing multiple tapers in this manner, different types of pipes can be fitted to the intermediate pipe 50 depending on the situation. Specifically, when a pipe having a relatively large inner diameter at its lower end is fitted to the intermediate pipe 50, the abutting tapered portion 3A may be used for fitting, and when a pipe having a relatively small inner diameter at its lower end is fitted to the intermediate pipe 50, the second pipe portion 2A may be used for fitting. However, the scope of the present disclosure is not limited thereto, and only either the second pipe portion 2A or the abutting tapered portion 3A may be tapered.

[0037] Furthermore, the taper rate of the guide tapered portion 4A located at the tip of the intermediate tube 50 is set to 1 / 15 to 1 / 20, which is larger than the taper rate of the other portions. By designing the taper rate of the guide tapered portion 4A to be larger than the taper rate of the other portions, the tubes can be easily aligned with each other. Note that when the technology of this embodiment is applied to the upper tube, the second tube portion 2A, the abutting tapered portion 3A, and the guide tapered portion 4A do not have to be provided.

[0038] The tapered portion 5 has a tapered shape that narrows toward the top. The upper end of the tapered portion 5 is connected to the lower end of the first tube portion 1, and the lower end of the tapered portion 5 is connected to the upper end of the cylindrical third tube portion 6. The taper ratio of the tapered portion 5 is designed to be approximately 1 / 80. In other words, the taper ratio of the tapered portion 5 is smaller than the taper ratios of the other tapered portions. Because the tapered portion 5 has such a tapered shape, even if axial misalignment occurs when another tube is mated with the lower end (third tube portion 6) of the intermediate tube 50, the upper end of the other tube (e.g., the guide tapered portion 4A) is guided by the inner circumferential surface of the tapered portion 5. This prevents axial misalignment. The taper rate of the tapered portion 5 may be any value as long as it is smaller than the taper rate of the tapered portion (e.g., guide taper portion 4A, second tube portion 2A, abutment taper portion 3A) formed at the upper part of the other tube that fits into the lower end of the intermediate tube 50.

[0039] The junction pole of the present disclosure can be applied to the communications industry.

[0040] 1: First pipe section 2, 2A: Second pipe section 3, 3A: Contact tapered section 4, 4A: Guide tapered section 5: Tapered section 6: Third pipe section 10: Lower pipe 20: First intermediate pipe 30: Second intermediate pipe 40: Upper pipe 50: Intermediate pipe 300: Heavy machinery

Claims

1. A connecting column formed by interlocking one end of one of a plurality of cylindrically formed tubes with the other end of the other tube, wherein the one end of the one tube is formed with a first tapered section that decreases in diameter as it approaches the one end of the one tube, and the other end of the other tube has an inner diameter larger than the outer diameter of the first tapered section and accommodates the first tapered section.

2. An interlocking joint column as described in claim 1, wherein a second tapered portion is formed at a portion of the one end of the one pipe other than the first tapered portion, and the second tapered portion abuts against the other end of the other pipe.

3. An interlocking type joint column as described in claim 2, wherein the taper rate of the first tapered portion is configured to be greater than the taper rate of the second tapered portion.

4. A construction method for an interlocking type joint column, comprising interlocking one end of one pipe with the other end of another pipe among a plurality of pipes formed into a cylindrical shape, using the interlocking type joint column described in any one of claims 1 to 3.

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