JPH0716536U - Step cover to prevent rising - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a means for eliminating the occurrence of short circuit accidents in transmission line towers, etc., where snakes climb up to the tower while following the lifting steps of workers and come into contact with high-voltage transmission lines to cause short-circuit accidents. thing. [Structure] A cover body 12 attached to the outside of an elevating step 5 projecting from a steel frame 2 of a steel structure of an electric power facility so as to cover it, and a step provided on the cover body 12 for the step 5. The step cover 11 is composed of the engaging portion 13 that is detachably engaged, and the cover body 12 has its upper end 12a grounded to the surface of the steel frame 2 and the upper end 12a.
To the lower end portion 12c, the shape has a smooth inclined surface that spreads downward. Therefore, when a snake winds around and climbs up the steel frame 2, it is possible to eliminate a catch, and a short-circuit accident due to a rising snake can be reliably solved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a step cover for preventing rising of a snake, which is mounted on an elevating step protruding from a steel frame of a steel frame structure of electric power equipment such as a transmission line tower.

[0002]

[Prior art]

 Figure 5 shows a transmission line tower constructed in the mountains. The power transmission line tower 1 is constructed by assembling a steel frame 2 into a truss shape, and a power transmission line 4 is suspended at the tip of an arm portion 3 thereof via an insulator. Further, the steel frame 2 of the transmission line tower 1 is provided with steps 5 for raising and lowering for allowing the operator to ascend and descend for maintenance management such as insulator cleaning at a pitch.

[0003]

[Problems to be solved by the device]

 However, there are many snakes in the mountains where the transmission line tower 1 is installed, and the snakes wind around the steel frame 2 and take step 5 to reach the arm 3 while transmitting this, and reach the transmission line 4 to cause a short-circuit accident. There was a problem of causing it. Such short circuit accidents due to snakes occur not only in transmission line towers in the mountains, but also in electric power facilities such as substations where high-voltage lines are wired.

At present, there is currently no means for effectively preventing such a short circuit accident due to a snake, and therefore there has been a demand for a means for preventing this. The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide means for effectively preventing a short-circuit accident caused by a snake climbing up a steel frame in electric power equipment.

[0005]

[Means for Solving the Problems]

 To this end, the present invention provides a cover body 12 which is attached to the outside of a lifting step 5 projecting from a steel frame 2 of a steel frame structure of electric power equipment so as to cover it, and a cover body 12 provided on the cover body 12. The step cover 11 is composed of the engaging portion 13 that is engaged and disengageably engaged with the step 5, and the upper end portion 12a of the cover body 12 is grounded to the surface of the steel frame 2 and the upper end portion of the cover body 12 is grounded. It has a shape having a smooth inclined surface that spreads downward from 12a toward the lower end 12c.

[0006]

[Action]

 According to the above configuration, by covering the step 5 with the cover body 12 so as not to catch the snake, it is possible to reliably prevent the snake from traveling along the step 5 and climbing up the steel frame 2 to cause a short circuit accident.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a step cover for preventing the rising of the snake, and FIG. 2 is a transverse sectional view. The step cover 11 is composed of a cover body 12 and a long plate-shaped locking portion 13 mounted inside the cover body 12. Both ends 14 of the locking portion 13 are fixed to the inner surface of the cover body 12 by welding, screws or the like. The cover body 12 is formed by bending a thin metal plate, and its shape resembles a shape obtained by vertically dividing a hollow cone into two parts.

FIG. 3 is a sectional view showing a state in which the step cover 11 is attached to the step 2 of the power transmission line tower 1 shown in FIG. 5, and FIG. 4 is a front view thereof. The step 5 is composed of a main body 51, a step bolt 52 rotatably held in the upper part of the main body 51 around a pin 54 in the arrow direction, and a block 53 for fixing the main body 51 to the surface of the steel frame 2. When not in use, the step bolt 52 is upright above the main body 51 as shown by the solid line in FIG. 5, but when the operator moves up and down, the step bolt 52 is rotated to the horizontal position shown by the chain line. Then, the power transmission line tower 1 is moved up and down along the horizontal step bolt 52.

As shown in FIG. 3, the cover body 12 has a triangular cross-sectional shape, the upper end portion 12 a of which is in contact with the surface of the steel frame 2, and the lower end portion 12 c is outward from the surface of the steel frame 2. Has a smooth inclined surface that spreads downward from the upper end 12a toward the lower end 12c. Both sides 12b of the cover body 11 are also grounded to the surface of the steel frame 2 (see FIG. 2).

The step cover 11 is attached to the outside of the step 2 by inserting it from above, and the locking portion 13 is fixed to the step 5 by being grounded to the upper surface of the base end portion of the block 53. Also, the cover body 12 can be easily removed by pulling it straight up. With the step cover 11 attached, the step 5 is completely covered by the cover body 12. As shown in FIG. 3, when the cover body 12 covers the step 5, there are no protrusions that may become a catch of the snake, and even if the snake wraps around the cover body 12 and tries to climb the steel frame 2, the snake slides down. A slip coating may be applied to the surface of the cover body 12 so that the snake can easily slip off.

As shown in FIG. 5, although a large number of steps 5 are projected on the steel frame 2, it is not necessary to attach the step covers 11 to all the steps 5, and several steps 5 near the surface of the earth are required. The intended purpose can be achieved by attaching to. Of course, when an operator climbs up the steel frame 2 for washing the insulator, the step cover 11 is removed from the step 5. Although the above embodiment has been described by taking a transmission line tower as an example, the step cover of the present invention can be applied to steps of electric power equipment such as a substation.

[0012]

[Effect of device]

 INDUSTRIAL APPLICABILITY As described above, according to the present invention, the cover body 12 which is attached to the outer side of the ascending / descending step 5 projecting from the steel frame 2 of the steel structure of the electric power equipment so as to cover the same, and the cover body 12 are provided. The step cover 11 for preventing rising of the sun is constructed from the locking portion 13 which is provided on the inner side of the and is releasably locked to the step 5, and the cover body 12 has its upper end 12 a on the surface of the steel frame 2. Since it is grounded and has a smooth inclined surface that spreads downward from the upper end 12a to the lower end 12c, it eliminates the snake's entanglement for climbing up, and the snake travels through step 5 while the steel frame 2 It is possible to eliminate the short-circuit accident of electric power equipment that occurs due to the rise of.

[Brief description of drawings]

FIG. 1 is a perspective view of a step cover for preventing rising of a rising sun according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a step cover for preventing rising of a rising sun according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a step cover for preventing rising of a rising sun according to an embodiment of the present invention.

FIG. 4 is a front view of a step cover for preventing rising of a snake according to an embodiment of the present invention.

[Figure 5] Front view of a transmission line tower

[Explanation of symbols]

 2 Steel frame 5 Step for lifting 11 Step cover 12 Cover body 12a Upper end 12c Lower end 13 Locking part

Claims (1)

[Scope of utility model registration request] 1. A step cover 11 for preventing rising of a snake, which is mounted on a step 5 for raising and lowering an operator, which is projected on a steel frame 2 of a steel frame structure of electric power equipment, and which covers the outside of the step 5. The cover body 12 is attached to the cover body 12 as described above, and the engaging portion 13 provided on the cover body 12 and engageably and disengageably engages with the step 5. A step cover for preventing ascending snakes, which has a shape that is grounded on the surface of the steel frame 2 and has a smooth inclined surface that spreads downward from the upper end 12a to the lower end 12c.