JP3002077U - Protective side plate of bridge for electric pipe - Google Patents

Abstract

(57) [Abstract] [Purpose] Improved structure of the protective side plate attached to the side of the electric pipe exclusive use bridge [Constitution] The electric pipe housing space of the bridge body is defined by four vertical and horizontal angles 1A, 1B. The protective side plate 2 fitted between the upper and lower angles is mainly a flat plate 21 attached to the vertical surfaces 11A and 11B of the angle member above and below,
A fastening plate 23 that presses the angle member 1A from both the front and back sides is provided inside the plate near the upper end, and an elastic leaf spring 24 that biases the angle member 1B from the back surface toward the inside near the lower end. [Effect] Conventionally, there was a problem in safety, workability, construction period, and construction cost because the mounting hole of the side plate was detected in accordance with the mounting hole of the angle material that was already fixed at the bridge site, and it was drilled and screwed. However, these high-altitude work is almost eliminated, and the installation can be completed with a light operation close to one-touch.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the shape of the outer surface of a dedicated electric pipe bridge installed on a river or the like.

[0002]

[Prior art]

 A large number of power lines, telephone lines, etc. are collectively housed in an electric pipe made of reinforced plastic, and a large number of these electric pipes are put together in an underground conduit constructed in the underground. It is recognized that it is superior to other methods in terms of initial economic merit of reduction and convenience of maintenance, and it is put to practical use in many cities. In this case, there is no particular concern that underground laying will not affect the ground simply by constructing an underdrain, but there is no particular point of concern, but if the pipeline crosses a river or a low valley, it will be used for urban transportation. Aside from the case where it is allowed to be installed on the side of the bridge, a dedicated bridge that spans the space must be built and a pipeline must be formed on it. The form of this exclusive bridge is not particularly limited, but in general, a truss type structure is used because it has a simple structure and the installation cost is relatively low.

In the place where the electric pipe is buried underground, there is usually no room for trouble and there is sufficient reliability in terms of security. However, when the electric pipe is exposed to the ground, the electric pipe remains exposed to the outside. Is not preferable. In other words, if the external conditions change, such as wind and snow, heavy rain, cold weather, and other climatic changes, it is difficult to say that plastic tube and lid made of plastic with high weather resistance are preferable. In addition, it is not desirable for crime prevention that citizens other than those involved can easily touch it. For this reason, on the dedicated bridge that houses the electric pipes, it is necessary to cover the entire area where the electric pipes are housed so as to be shielded from the outside so that there is no omission in protection.

FIG. 4 is a perspective view showing a state in which a pipe body is accommodated in a conventional dedicated bridge for electric pipes. Although the truss structure itself, which is the main body of the dedicated bridge, is not shown here, a large number of electric pipes P are regularly arranged vertically and horizontally, and a reinforced plastic frame is installed between the upper and lower electric pipes. The position of the electric tube is fixed by sandwiching it, and it is restrained so as not to roll vertically and horizontally. The four mounting members form the outline of the space in which the electric tube is housed. Specifically, an angle member having an L-shaped cross section made of steel is widely applied. Angle members 1a, 1b on the left, right, top and bottom are respectively fixed to the structure body of the dedicated bridge not shown in this figure by welding, and a large number of electric tubes are arranged in a rectangular housing space formed by the four angle members. And fixed.

The upper lid 3a and both protective side plates 2a for protecting the electric tube fixed at the end of the arrangement are mounted on site. As shown in the figure, the conventional mounting method is to apply the protective side plate 2a and the top cover 3a, which are cut to the size as designed at the factory, to the bridge body constructed locally. The mounting hole 101 drilled in the angle member 1a is picked up to mark the position, and based on this marking, the mounting hole 102 is drilled in the protective side plate 2a on the site, and then the fastening bolt 4a and the fastening nut 5a are used to form the angle member. 1a and the protective side plate 2a are fastened to form a protective plate that blocks the outside air.

[0006]

[Problems to be solved by the device]

 The width and length of bridges and 雛, which are specialized to form conduits for electric pipes, rather than being used for transportation in cities and the like, have considerable widths and lengths, and would be assembled together at the factory. It is not uncommon for local transport to exceed capacity. For this reason, the bridge structure itself must be temporarily assembled at the factory, after confirming the predetermined shape and dimensions, disassembled and transported once, and then reassembled at the site. However, it must be technically acknowledged that a subtle error will be added when the angle material already welded to the bridge body is reassembled on-site for that reason, compared to the previous temporary assembly state. . Therefore, as described above, the position of the mounting hole 101 is detected by applying the protective side plate 2a to the angle member 1a of the assembled bridge main body, and after the mounting hole 102 matching the position is punched in the protective side plate 2a. Otherwise, there is a reason why it is difficult to connect the two parties, and in the end, there is an unavoidable way to avoid the so-called physical matching work procedure.

It is needless to say that this process is a high-altitude work on a river, which is usually a large distance to the water surface, and is an extremely inconvenient and dangerous unsafe act. It is an obvious obstacle that everyone is spending a considerable amount of time and effort on installation, contributing to schedule delays and rising construction costs. In order to solve the above-mentioned problems, this proposal aims to provide a protective side plate for a dedicated electric pipe bridge that is simple, safe, and efficiently installed at a predetermined position.

[0008]

[Means for Solving the Problems]

 The protective side plate of the electric pipe dedicated bridge according to the present invention is constructed by placing a large number of electric pipes inside the structure of the electric pipe dedicated bridge installed on a river or the like, and then horizontally extending them in parallel to form a ring of the electric pipe receiving space. It is fitted and fixed between the upper and lower mounting members that form the hull, and the mounting portion is made up of four angle members 1A and 1B with an L-shaped cross section that are laid horizontally in the vertical and horizontal directions parallel to the bridge shaft. The protective side plate 2 fitted between the angle members is made of reinforced plastic and is mainly composed of a flat plate 21 attached to the vertical surfaces 11A and 11B of the angle member 1 at the upper and lower ends thereof. The fastening plate 23 for pressing the angle member 1A is screwed with the spacer 22 interposed therebetween, and the elastic plate spring 24 bent so as to bias the angle member 1B from the back side is attached to the inside near the lower end. Solved the problem.

Further, in this configuration, specifically, the angle member 1 is formed of a plated steel material, the elastic leaf spring is formed of a stainless steel material, and the elastic leaf spring has a W-shaped or Is a very desirable embodiment in which the shape of B is formed.

[0010]

[Action]

 Since the protective side plate 2 of the bridge for exclusive use of the electric pipe of the present invention has the above-described structure, it can be easily fitted between the angle members by the following procedure when mounting. This action will be described with reference to FIG. 1, which is a cross-sectional view of the embodiment of the present invention. When the protective side plate 2 is attached, the main body of the dedicated bridge has already been erected at a predetermined position and welded to the main body structure. Electric tubes are arranged and fixed in the accommodating space whose four-sided contours are specified by the vertical and horizontal angle members 1A and 1B. In the protection side plate 2 before attachment, the fastening plate 23 near the upper end of the flat plate 21 is not yet attached, and the spacer 22 is provided at a predetermined position on the back surface of the flat plate (the length of the vertical portion 12A of the angle member 1A to be attached). (Corresponding to below). On the other hand, the elastic leaf spring 24 is already attached to the back surface 25B below the flat plate 21, and the bending point of the bent spring can be pressed against the back surface of the vertical portion 12B of the angle member 1B to be attached, but its lower end is The positional relationship is such that the lower end of the vertical portion 12B cannot be reached.

The protective side plate 2 is inserted from the lower end into the lower angle member 1B. The back surface 25B below the flat plate 21 is in surface contact with the vertical surface 11B of the angle member 1B, and the elastic leaf spring 24 attached to the back surface side of the flat plate presses the vertical surface 11B of the angle member 1B. Since the front and back are integrated together to exert a pressure on the vertical portion 12B of the angle member 1B, the position of the protective side plate 2 is temporarily constrained to be immobile.

In this state, the upper back surface 25 A of the flat plate 21 is in close contact with the upper front surface 11 A of the angle member 1. Here, the fastening bolts 4 are inserted into the mounting holes 26 that have been drilled above the flat plate 21. Since the upper cover for covering the space between the upper angle members 1A and 1A has not been attached yet, the worker grasps the fastening plate 23 and reaches out to the back side of the angle member 1A, and the attachment holes 27 previously drilled in the fastening plate 23 are attached. It is a very simple manual work to fit the above so that the protruding fastening bolt 4 penetrates. Since the spacer 22 is provided, the fastening plate 23 is moved toward the vertical back surface 13A side above the angle member 1A by making contact with the spacer 22 and the fastening nut 5 is fitted and screwed from the end of the fastening bolt 4 protruding to the back surface. Then, the vertical portion 12A above the angle member 1A is sandwiched between the upper back surface 25A of the flat plate 21 and the front surface of the fastening plate 23, and the position is surely fixed by the screwing force of the fastening screw.

[0013]

【Example】

 FIG. 1 is a cross-sectional view of an extremely preferred embodiment of the present invention, the structure of which is as described above, and FIG. 2A shows the relationship between the angle member 1A and the fastening plate 23. FIG. 2 (B) is a partial side view showing the relationship of the elastic plate bar 24 to the angle member 1B. Of these fastening members, the angle members 1A, 1B and the protective side plate 2 are preferably made of steel which is surface-treated with zinc plating or tin plating. From the viewpoint of corrosion resistance, the fastening plates and elastic leaf springs are made of stainless steel. Although effective, non-ferrous alloys such as brass and gun metal may be used as the material. The same applies to fastening bolts and fastening nuts.

FIG. 3 is a front view of the entire electric pipe exclusive bridge to which the present invention is applied, omitting the bridge structure itself. The four angle members 1A and 1B arranged vertically and horizontally are welded to the main body of the structure and fixed in position. The accommodating space S of the electric tube P whose four-sided contour is specified by the angle member 1 is entirely covered by the protective side plate 2 and the upper lid 3, and is protected by blocking direct contact with the outside air. Electric pipes are usually made of reinforced plastic pipes or composite pipes of reinforced plastic and resin mortar. It is the pedestal 6 that fixes the position of the electric tube so as not to roll, and this is also often made of a reinforced plastic excellent in corrosion resistance and weather resistance. It is economically preferable to apply a reinforced plastic material to the upper lid 3 as well as the protective side plate 2.

[0015]

[Effect of device]

 As described above, the present invention, when a protective side plate for covering the side surface is attached after the structural skeleton of a dedicated bridge for electric pipes has been formed, is dangerous due to the conventional configuration due to the configuration of the shape. Since all the work involved in the work can be banished and replaced with a safe, efficient, and simple construction method, the work-related accidents of local workers can be eliminated, and the work can be greatly shortened and the construction cost can be reduced. is there. That is, specifically, when attaching the protective side plate to the angle member, above the protective side plate, the position marking of the mounting hole by the conventional physical alignment, the mounting hole based on the marking, and the mounting holes are inserted. The work at a high place of screwing the fastening bolts and nuts mentioned above appears as labor saving, which is limited to fastening the bolts and nuts, and even under the protection side plate, even the fastening is omitted and the operation is completed with a simple one-touch operation. Therefore, the effect of significantly reducing the time and ensuring safety is remarkable.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

2 is an upper partial side view (A) and a lower partial side view (B) of FIG. 1. FIG.

FIG. 3 is a front view of the same embodiment as a whole.

FIG. 4 is a perspective view illustrating a conventional technique.

[Explanation of symbols]

 1 Angle Material 2 Protective Side Plate 3 Upper Lid 4 Tightening Bolt 5 Tightening Nut 6 Stand 11 Vertical Surface 12 Vertical 13 Vertical Backside 21 Flat Plate 22 Spacer 23 Fastening Plate 24 Elastic Plate Spring 25 Backside 26 Mounting Hole (Protecting Side Plate) 27 Mounting Hole (Fastening) Board) P Electric tube S Storage space

Claims (3)

[Scope of utility model registration request] 1. Between the upper and lower attachment members that form a contour of the housing space of the electric pipe by arranging a large number of electric pipes in a structure of a bridge for exclusive use of electric pipes installed on a river or the like and horizontally extending in parallel. In the protection side plate of the dedicated electric pipe bridge that is fitted and fixed to, the mounting portion is four cross sections L that are laid horizontally and vertically in parallel with the bridge axis.
The protective side plate 2 which is made of reinforced plastic and is made of reinforced plastic is mainly composed of a flat plate 21 attached to the vertical surfaces 11A and 11B of the angle member 1 at the upper and lower ends, The flat plate 21 has a fastening plate 23 that presses the angle member 1A from the front and back sides inside the vicinity of the upper end with a spacer 22 in between, and is bent so that the angle member 1B is biased from the back surface toward the inside near the lower end. A protective side plate of a bridge for electric pipes, characterized in that the elastic leaf spring 24 is attached. 2. The protective side plate for a dedicated electric pipe bridge according to claim 1, wherein the angle member 1 is formed of a plated steel material, and the elastic leaf spring is formed of a stainless steel material. 3. A protective side plate for a dedicated bridge for electric pipes according to claim 1, wherein the elastic leaf spring forms a W-shape or a B-shape.