Temporary column installation platform and method for installing temporary columns using the same

Abstract

To improve the efficiency of utility pole replacement work. [Solution] The temporary pole mounting base 1 includes a fixing part 11 on which the ground contact portion 22 of the outrigger 21 equipped on the vehicle 2 is placed and fixed to the ground, a support part 12 that supports the temporary pole 3 in an upright position, and a connecting part 13 that connects the fixing part 11 and the support part 12.

Description

Technical Field

[0001] The present invention relates to a temporary pole installation base and a temporary pole installation method using the same.

Background Art

[0002] The general procedure for utility pole reconstruction work using a temporary pole is as follows.

[0003] (1) Excavate the area near the existing pole (main pole) to erect the temporary pole (2) Erect the temporary pole in the excavated position (3) Relocate attached objects (for example, communication cables, power cables, or equipment attached to the utility pole) from the existing pole to the temporary pole (4) Excavate the area around the existing pole to remove it (5) Remove the existing pole (6) Erect the new pole (main pole) (7) Relocate the attached objects from the temporary pole to the new pole (8) Excavate the area around the temporary pole to remove it (9) Remove the temporary pole (10) Backfill the hole excavated for the temporary pole (11) Compact the backfilled position (12) Pave to complete restoration

[0004] As described above, conventional reconstruction work requires considerably complicated processes.

[0005] In contrast, the following Patent Document 1 proposes a temporary pole having a concrete base (heavy weight) at the lower end. According to this, steps (1), (8), (10), (11), and (12) of the above-described processes can be omitted. However, in order for the temporary pole to withstand wind and stand on its own, a base with considerable weight is required, which poses a problem of heavy burden on transportation and installation work.

[0006] Furthermore, Patent Document 2 below proposes fixing temporary posts to the ground with bolts. However, this technique requires obtaining sufficient fixing strength by screwing the bolts into the ground. Therefore, it is thought that the locations where it can be installed are considerably limited.

[0007] Furthermore, Patent Document 3 below proposes creating holes in the cargo bed of a truck crane and attaching and holding temporary pillars in these holes. However, this technology requires holes to be drilled in the cargo bed, which makes the cargo bed inconvenient to use. In addition, since the position of the cargo bed relative to the truck crane (i.e., the position of the holes) is fixed, there is also the problem that it can be difficult to install temporary pillars in the appropriate position. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 58-185866 [Patent Document 2] Japanese Patent Publication No. 2000-270451 [Patent Document 3] Japanese Patent Application Publication No. 4-93480 [Overview of the project] [Problems that the invention aims to solve]

[0009] This invention has been made in view of the circumstances described above. The main object of this invention is to provide a technology that can improve the efficiency of utility pole replacement work while solving the problems of the prior art described above. [Means for solving the problem]

[0010] This invention can be expressed as the invention described in the following items.

[0011] (Item 1) The fixing part is secured to the ground by the ground contact portion of the outrigger equipped on the vehicle, a support portion that supports the temporary column in an upright state, a connecting portion that connects the fixing portion and the support portion, and a temporary column installation stand comprising:

[0012] (Item 2) the fixing portion has an abutment surface against which a ground contact portion of the outrigger abuts, The temporary column installation stand according to Item 1.

[0013] (Item 3) the support portion has a cylindrical portion that holds the temporary column therein, The temporary column installation stand according to Item 1 or 2.

[0014] (Item 4) the connecting portion is extendable and retractable, whereby a distance between the fixing portion and the support portion can be changed The temporary column installation stand according to Item 1 or 2.

[0015] (Item 5) the connecting portion comprises a first connecting portion to which the fixing portion is attached, and a second connecting portion to which the support portion is attached, the first connecting portion and the second connecting portion are detachably connected to each other The temporary column installation stand according to Item 1 or 2.

[0016] (Item 6) A temporary column installation method using the temporary column installation stand according to Item 1 or 2, comprising: a step of fixing the fixing portion to the ground by placing the ground contact portion of the outrigger on the fixing portion; and a step of installing the temporary column in an upright state by causing the support portion to support the temporary column A temporary column installation method comprising: [Advantageous Effects of the Invention]

[0017] According to the technology of the present invention, it is possible to improve the efficiency of utility pole reconstruction work. [Brief Description of the Drawings]

[0018] [Figure 1] This is a schematic diagram illustrating a temporary pole mounting base according to one embodiment of the present invention. [Figure 2] Figure 1 is a perspective view of the temporary column mounting platform. [Figure 3] Figure 1 is an exploded perspective view of the temporary column mounting base. [Figure 4] This is a plan view of the temporary column mounting base in its disassembled state (Figure 1). [Figure 5] Figure 1 is a front view of the temporary column mounting base in a disassembled state. [Figure 6] Figure 1 is an explanatory diagram illustrating how to use the temporary column mounting base. [Figure 7] Figure 1 is an explanatory diagram illustrating how to use the temporary column mounting base. [Figure 8] Figure 1 is an explanatory diagram illustrating how to use the temporary column mounting base. [Figure 9] Figure 1 is an explanatory diagram illustrating how to use the temporary column mounting base. [Figure 10] Figure 1 is an explanatory diagram illustrating how to use the temporary column mounting base. [Figure 11] Figure 1 is an explanatory diagram illustrating how to use the temporary column mounting base. [Modes for carrying out the invention]

[0019] A temporary pole mounting base according to one embodiment of the present invention will be described below with reference to the attached drawings.

[0020] (Configuration of the temporary column mounting base) The temporary pole mounting base 1 according to this embodiment mainly consists of a fixing part 11 on which the ground contact portion 22 of the outrigger 21 equipped on the vehicle 2 is placed and fixed to the ground, a support part 12 that supports the temporary pole 3 in an upright position, and a connecting part 13 that connects the fixing part 11 and the support part 12. Furthermore, the temporary pole mounting base 1 as a whole is made of a material having the necessary strength, such as steel.

[0021] (Fixed part) The fixing part 11 has a contact surface 111 against which the ground contact portion 22 of the outrigger 21 abuts. The contact surface 111 is plate-shaped and has sufficient strength to not deform even when the ground contact portion 22 of the outrigger 21 is placed on its upper surface.

[0022] (Support part) The support portion 12 has a cylindrical portion 121 that holds the temporary column 3 inside. The upper and lower ends of the cylindrical portion 121 are open, allowing the temporary column 3 to be inserted into and removed from the cylindrical portion 121 from above. Multiple bolt holes are formed on the outer circumference of the cylindrical portion 121 into which bolts can be screwed inward. If necessary, bolts (not shown) can be screwed into these bolt holes and brought into contact with the cylindrical portion 121 to reduce the wobbling of the temporary column 3 relative to the cylindrical portion 121.

[0023] (Connection part) The connecting portion 13 fixes the positional relationship between the fixing portion 11 and the support portion 12, thereby maintaining the upright posture of the temporary column 3 supported by the support portion 12.

[0024] The connecting portion 13 in this embodiment has a first connecting portion 131 to which the fixing portion 11 is attached, and a second connecting portion 132 to which the support portion 12 is attached. The first connecting portion 131 and the second connecting portion 132 are connected to each other in a manner that allows them to be detached.

[0025] In this embodiment, the second connecting portion 132 can be housed inside the first connecting portion 131 (see Figures 2 to 5). The lower end of the first connecting portion 131 is provided with a guide portion 133 (see Figures 3 and 4) for guiding and supporting the lower end of the second connecting portion 132, which is to be housed inside the first connecting portion 131.

[0026] In this embodiment, the second connecting portion 132 is connected to the first connecting portion 131 by a suitable bolt (not shown) that passes through both when the second connecting portion 132 is housed within the first connecting portion 131. Furthermore, the overall length of the connecting portion 13 can be adjusted by changing the position of the bolt holes used for connection (i.e., the connection position between the first connecting portion 131 and the second connecting portion 132). In Figures 6 to 8, the connection position is indicated by a dashed line. With this configuration, the connecting portion 13 in this embodiment is extendable and retractable, and as a result, the distance between the fixing portion 11 and the support portion 12 can be changed.

[0027] The configuration of the connection section 13 will be explained in more detail in the operation of the temporary column mounting base 1.

[0028] (vehicle) In this embodiment, a so-called pole erection vehicle is used as vehicle 2. A pole erection vehicle is a special vehicle equipped with excavation and crane functions. Generally, pole erection vehicles also have outriggers. The typical vehicle weight of a pole erection vehicle is around 7 tons, and in this case, the load from the ground contact portion 22 to the contact surface 111 is assumed to be around 1 ton.

[0029] The outriggers 21 of vehicle 2 can be moved up and down by means of a hydraulic cylinder, for example, and can also extend and retract in the width direction of the vehicle.

[0030] (temporary pillar) In this embodiment, a standard steel pipe column is used as the temporary column 3. Depending on the length, the self-weight of the temporary column 3 is approximately 90 kg when a standard steel pipe column is used.

[0031] (Temporary column installation method using the temporary column installation base of this embodiment) The following describes a method for installing temporary columns using the temporary column installation base 1 of this embodiment. In the following description, it is assumed that the initial state is one in which the first connection part 131 and the second connection part 132 of the connection part 13 of the temporary column installation base 1 are separated, that is, the fixing part 11 and the support part 12 are separated.

[0032] (Securing the temporary support posts) First, the ground contact portion 22 (see Figure 1) of the outrigger 21 installed on the vehicle 2 (see Figure 9) is placed on the fixing portion 11 of the temporary column mounting base 1. This allows the fixing portion 11 to be fixed to the ground 8. In Figure 9, reference numeral 200 indicates an aerial work platform used for relocating existing cables 6 and other attached structures. In Figure 9 and Figure 11 described later, descriptions of the equipment on the cargo beds of the vehicle 2 and the aerial work platform 200 are basically omitted, but both are equipped with standard equipment.

[0033] (Securing the first and second connection points) Next, the second connecting part 132 is housed in the first connecting part 131, and the two are fixed together with bolts. In this embodiment, the length of the connecting part 13 can be adjusted by selecting the connection position between the first connecting part 131 and the second connecting part 132. Comparing the distance from the center of the contact surface 111 of the fixing part 11 to the center of the cylindrical part 121 of the support part 12, the distance is L1 at the connection position in Figure 6, the distance is L2 at the connection position in Figure 7, and the distance is L3 at the connection position in Figure 8. Here, L1 > L2 > L3. Therefore, the temporary column installation base 1 of this embodiment has the advantage that the distance from the outrigger 21 to the temporary column 3 can be adjusted as needed, and the constraints on the temporary column installation position are reduced, making the installation work easier.

[0034] Furthermore, in this embodiment, a guide portion 133 is provided on the first connection portion 131 to guide and support the lower end of the second connection portion 132, which has the advantage of improving work efficiency when connecting the first connection portion 131 and the second connection portion 132.

[0035] (Erecting temporary pillars) Next, the temporary column 3 is lifted by a crane mounted on, for example, the vehicle 2, and inserted into the cylindrical section 121 in an upright position. This allows the support section 12 to support the temporary column 3. In this state, the temporary column 3 is supported by the weight of the outrigger 21 via the connecting section 13 and the support section 12, making it less likely to fall over in the wind. Therefore, according to the temporary column installation stand 1 of this embodiment, the temporary column 3 can be easily and reliably installed on site. If there is a gap between the temporary column 3 and the cylindrical section 121, bolts can be screwed into the cylindrical section 121 as needed to stabilize the posture of the temporary column 3.

[0036] After erecting the temporary pillars, proceed as before. • Transfer the attached structures from the existing columns to the temporary columns. • Excavation around the existing column to remove it. • Remove existing columns • Erecting new pillars (main pillars) • Transfer the attached equipment from the temporary column to the newly installed column. Perform tasks such as these.

[0037] Afterward, if bolts were screwed into the cylindrical part 121 to stabilize the temporary column 3, those bolts are loosened. Then, for example, a crane is used to remove the temporary column 3 from the cylindrical part 121. Also, if necessary, the support part 12 is removed from the fixing part 11.

[0038] Subsequently, the outriggers 21 are operated to separate the ground contact portion 22 from the contact surface 111 of the fixed portion 11, making the fixed portion 11 movable. Then, materials such as the temporary column mounting base 1 and temporary columns 3 can be collected from the site, and the reconstruction work can be completed.

[0039] In conventional methods of replacing utility poles, it was necessary to excavate near the existing pole (main pole) to erect a temporary pole, excavate to remove the temporary pole, backfill the hole excavated for the temporary pole, compact the backfilled area, and pave the area to restore it. In contrast, in this embodiment, these tasks can be omitted, thus improving the efficiency of the replacement work.

[0040] Furthermore, according to the temporary column installation base 1 of this embodiment, the temporary column 3 can be erected simply by inserting the temporary column 3 into the cylindrical part 121. In addition, even if there is a step 9 (see Figure 1) on the ground 8 where the temporary column 3 is to be installed, and the height of the contact surface 111 of the fixing part 11 differs from the height of the installation position of the temporary column 3, the cylindrical part 121 has the advantage of allowing the temporary column 3 to be installed.

[0041] Furthermore, as shown in Figure 10, even if there is a step 90 in the ground 8 and the contact surface 111 of the fixing part 11 is higher than the installation position of the temporary column 3, the relative position between the temporary column 3 and the cylindrical part 121 can be easily changed, so the temporary column 3 can be installed using the same procedure as described above. In the example in Figure 10, a buffer material 31 is placed between the lower end of the temporary column 3 and the ground 8, thereby protecting the temporary column 3 and the ground 8. The buffer material 31 is preferably made of a material that has sufficient strength to withstand the weight of the temporary column 3 and is also somewhat flexible. Silicone resin is an example of such a material. In this example, the shape of the buffer material 31 is sheet-like (disc-like), but it can be made into an appropriate shape.

[0042] Furthermore, when using the temporary column mounting base 1 of this embodiment, as shown in Figure 11, the orientation of the temporary column mounting base 1 can be easily changed around the position of the contact surface 111 of the fixing part 11. For example, in the technique of providing holes for temporary column installation in the cargo bed of a vehicle, as described in Patent Document 3 above, the positional relationship between the vehicle and the holes is fixed, which imposes constraints on the installation position of the temporary column. In contrast, with the temporary column mounting base 1 of this embodiment, the orientation of the temporary column mounting base 1 can be changed around the position of the contact surface 111 of the fixing part 11, thus reducing the constraints on the orientation of the vehicle with respect to the temporary column installation position. Therefore, even when using a large vehicle 2, it is possible to efficiently perform the installation work of the temporary column 3.

[0043] Furthermore, in this embodiment, since a pole-erecting vehicle commonly used on site is used as vehicle 2, there is also the advantage of good work efficiency.

[0044] Furthermore, in this embodiment, the temporary column 3 can be stably erected using the weight of the vehicle 2, so the temporary column mounting base 1 itself can be made lightweight. For example, if steel is used, depending on the design, the weight of the temporary column mounting base 1 can be expected to be kept to around 60 kg or less. Therefore, there is the advantage of improved work efficiency in transporting and installing the temporary column mounting base 1.

[0045] Furthermore, in this embodiment, since the connection portion 13 of the temporary column mounting base 1 is separable, the efficiency of transporting and installing the temporary column mounting base 1 can be further improved.

[0046] Furthermore, in this embodiment, there is no need to drill holes in the vehicle's cargo bed for installing temporary pillars, which has the advantage of not impairing the usability of the vehicle and reducing the restrictions on the types of vehicles that can be used for installing temporary pillars.

[0047] The above-described embodiments are merely examples and do not represent configurations essential to the present invention. The configuration of each part is not limited to those described above, as long as it can achieve the spirit of the present invention.

[0048] For example, in this embodiment, the first connection part 131 and the second connection part 132 are assumed to be separated in their initial state before installation, but they may be connected beforehand.

[0049] Furthermore, in this embodiment, the connecting portion 13 is composed of a first connecting portion 131 and a second connecting portion 132, but if there is no need to adjust the length of the connecting portion 13, the connecting portion 13 may be constructed in a way that prevents separation.

[0050] Furthermore, the connecting portion 13 only needs to have a structure that allows the support portion 12 to be attached to the fixing portion 11, and its specific configuration is not particularly restricted.

[0051] Furthermore, in this embodiment, a pole-erecting vehicle was used as vehicle 2, but it is not limited to this; any vehicle equipped with outriggers, such as a truck crane (a truck with a crane mounted on it), may be used. However, it is preferable that vehicle 2 is one that is used on site. [Explanation of symbols]

[0052] 1 Temporary pole installation stand 11 Fixed part 111 Contact surface 12 Support part 121 Cylindrical part 13 Connection part 131 First connection section 132 Second connection section 133 Guide Section 2 vehicles 21 Outriggers 22 Grounding part 3 temporary pillars 31 Cushioning material 6. Existing cables 8 ground 9.90 step difference 200 Aerial work platforms L1・L2・L3 distance

Claims

1. The fixing part is secured to the ground by the ground contact portion of the outrigger equipped on the vehicle, A support section that supports the temporary column in an upright position, A connecting portion that connects the fixed portion and the support portion. A temporary pole mounting base equipped with the necessary components.

2. The fixing portion has a contact surface that the ground contact portion of the outrigger makes contact with. A temporary pole mounting base according to claim 1.

3. The support portion has a cylindrical portion that holds the temporary column inside. A temporary pole mounting base according to claim 1 or 2.

4. The aforementioned connecting part is extendable and retractable. This makes it possible to change the distance between the fixed part and the support part. A temporary pole mounting base according to claim 1 or 2.

5. The connecting portion comprises a first connecting portion to which the fixing portion is attached, and a second connecting portion to which the support portion is attached. The first connecting portion and the second connecting portion are connected in a detachable manner. A temporary pole mounting base according to claim 1 or 2.

6. A method for installing a temporary column using the temporary column installation base described in claim 1 or 2, The process of fixing the fixing part to the ground by placing the ground contact portion of the outrigger on the fixing part, The process involves installing the temporary column in an upright position by supporting it with the support portion. A method for installing temporary pillars, comprising the following features.

Images