KR20150127310A - Nut release detection function Bolt nut Protective cap Manufacturing method - Google Patents

Abstract

The present invention relates to a technique about a cap for protecting a bolt, which envelops a bolt and a nut to prevent the corrosion of a bolt and a nut and is composed of rubber plastics. More specifically, the present invention relates to a technique about a cap for protecting a bolt and a nut and having the function of detecting the loosening of a nut, wherein a nut mounted on a bolt can be detected loosening due to vibration even from the outside. The technique according to the present invention can detect a nut loosening even if a bolt cap has been put, to solve the problem that a nut loosens while the nut rotates slowly due to vibration with respect to a bolt and a nut used in railroads and power plants. The bolt cap is manufactured with a structure of being separated and combined vertically. Also, one nut is generally coupled to a bolt but two nuts are coupled in some facilities, so the bolt cap is developed and manufactured with a structure capable of being applied to both. According to the manufacturing method, an upper end part is a bolt cap designed to fix a bolt and a lower end part fixes a nut. If a nut loosens and rotates, a nut cap also rotates. A loosening prevention indicating line is configured vertically and integrally on the upper end bolt cap and the lower end nut cap. If the nut loosens, the nut cap rotates and the loosening detection indicating line displayed on the bolt cap and the nut cap is dislocated, the loosening of the nut can be checked without disassembling the bolt cap. Also, the nut cap is configured to have 6 to 14 grooves inside the nut cap irrespective the number of the nuts, one or two, the outer upper end of the nut cap has a cylindrical insertion stand for connecting, assembling and combining the bolt cap, and the bolt can and the nut cap are configured to be connected and assembled to each other.

Description

Nut release detection function Bolt nut Protective cap manufacturing method.

In order to prevent corrosion of the bolt nut installed in the industrial plant facility, when mounting the plastic bolt cap on the bolt nut fastening part, the nut mounted on the bolt inside the bolt cap placed on the bolt nut is slowly rotated by the vibration, In order to prevent corrosion of the bolt nut, it is necessary to use a bolt cap, but it is hesitant to use the bolt cap because it can not detect the nut loosening.

The nut fastening detection bolt nut protection cap of the present invention is a structure in which a bolt cap is mounted on the upper bolt of the bolt fastening portion and a nut cap is mounted on the lower end nut, When the nut is loosened and rotated, the nut cap rotates at the same time, and the bolt cap on the upper part is pressed and fixed to the bolt and does not rotate.

The bolt cap and the nut cap, which are combined with the upper and lower cylinders, are designed so that only the nut cap can be rotated irrespective of the fixed bolt cap, and the bolt cap and the nut on the outer surface, It is a technology to manufacture a nut-tightening bolt nut protection cap that can be visually identified that the nut is loosened by looking at the bolt nut protection cap mounted from the outside when the release detection indication line is shifted.

The upper and lower connecting bolt caps consist of three stages with the conventional bolt cap. The lower end of the bolt cap has a circular inner shape. Even if the nut rotates inside the bolt cap, the bolt cap is not rotated and the nut loosening can not be detected. There is a bolt cap that puts a nut on it and connects it at a stop and fastens a separate bolt made up of the parts of the bolt cap, but it does not know the nut loosening. Another bolt cap is a bolt cap If the bolt cap is attached to the bolt cap, it is impossible to wiyk the bolt cap, and the bolt cap can not be reused.

Another technology is disclosed in Korean Patent Application No. 10-1254138 (bolt and nut double protection cap), which is a double structure bolt cap with two caps, which prevents breakage and is robust. The effect of prevention of corrosion of bolt nut rust is excellent, and there is no function that detects the release of technology or nuts that are completed in PCT international patent application in 46 countries.

The present invention relates to a bolt cap mounted on a bolt and a bolt cap mounted on the bolt and detecting a nut loosening from the outside. And the inner circumference of the nut cap at the lower end is composed of a nut cap and the nut groove which can accommodate two double is formed into a hexagon-14 angle with a nut groove, and when the nut cap is put on the nut, each nut angle is inserted into the nut groove, The nut cap is matched and the outer periphery of the nut cap forms a circular fitting part. The circumferential groove is formed and the bolt cap of the upper part is coupled and the lower end of the bolt cap is inserted into the recessed groove of the nut cap.

The bolt cap on the top is made of four to eight bolt supports which are fixed to the bolt and radially bolted to the wall of the cap. The bolt support has two bolts protruding from the end of the bolt. The bolt cap and the nut cap are integrally formed with the relief detection mark line, and the relief detection mark is formed by embossing on the mold or by the color printing after the manufacture.

When the bolt nut protection cap is attached to the bolt nut, fit the nut cap to the nut groove formed in the nut cap inner circumference, put the bolt cap on the upper bolt on the exposed bolt, Make sure that the bolt cap's markings match, and attach with a rubber hammer.

When the bolt nut protection cap of the present invention is mounted, the nut nut cap is rotated when the nut is loosened and rotated, and the bolt cap at the upper end is pressed and fixed by the bolt. When the bolt cap and nut cap are aligned, the bolt cap is covered and the nut loosening can be detected even when the nut is loosened, so that the accident caused by the nut loosening can be prevented have.

The nut cap can be independently rotated independently of the bolt cap, so that a space is formed in the upper and lower connecting members so that only the nut cap can rotate regardless of the upper bolt cap. Thus, the nut cap rotates regardless of the bolt cap The nut cap is configured to rotate.

When the bolt cap is designed, the bolt cap is divided into upper and lower parts, and the nut cap can be rotated independently through the connection assembly. When the bolt cap on the upper part and the nut cap on the lower end are connected and assembled through the cylindrical fitting part, The nut cap is pressed into the bolt, and the nut cap is rotated so that the nut cap rotates independently irrespective of the fixed bolt cap. When the nut cap is not rotated, the nut is loosened However, when the nut rotates by loosening the nut inside the nut cap, a small gap is formed around the bottom of the bolt cap and the nut cap's cap so that the nut cap can rotate independently of the bolt cap. And the nut cap is rotatable.

The railway shipbuilding power plants and industrial plant facilities classified as high-tech industries use bolt nuts. Bolt nuts mounted on industrial facilities require bolt caps to prevent corrosion, but bolt caps are placed on railway power plants where vibration is continued. The method of confirming the loosened state of the nut is that the bolt cap must be dismantled to check the state of the loosening of the nut, which is cumbersome and costly. However, the nut fastening detection bolt nut protection cap of the present invention is effective in bolt nut maintenance by preventing the bolt nut corrosion when the bolt nut is mounted and detecting the nut fastening in the bolt cap even when the bolt cap is attached.

1 is a sectional view and a perspective view of a bolt nut cap of the present invention;
Fig. 2 is a bottom view of the bolt cap, nut cap, and nut cap perspective view of the present invention
The bolt cap (10)
Nut cap (20)
The bolt support (30)
The projections (40)
The nut groove (50)
(60)
The recessed groove (70)
Loop Detection Indicator (11)

The upper bolt cap 10 and the lower nut cap 20 are constituted by the method of manufacturing the bolt nut protection cap of the present invention and the inside of the upper bolt cap 10 is surrounded by 4-8 bolt supports 30 And one end is connected to the wall surface of the bolt cap and the end of the bolt support on one side constitutes the two strands 40. [

The nut cap (20) has a structure in which one or two nuts can be inserted. A nut groove (50) in which a nut angle of a hexagon-14 angle is inserted and fixed is formed on the outer wall of the nut insertion space in a sawtooth shape. 20 has a circular fitting part 60 to which a lower circular protrusion can be inserted at an outer upper end of the bolt cap 10. When the upper bolt cap is connected, A circular uneven groove 70 is formed around the lower periphery so that the bolt cap circular end is inserted.

On the surface of the bolt cap 10 and the nut cap 20, a bolt cap and a nut cap are connected to the release detection indication line 11 of the release detection function, and 2-4 release detection lines are vertically engraved or painted .

When the bolt nut protection cap is installed in the fastening part of the bolt nut, the nut cap (20) is fastened to the nut at the lower end of the bolt fastening part through the bolt at the upper end and the bolt cap (10) The bolt cap 10 is mounted on the bolt by aligning the bolt cap 20 and the unlocking indication line 11 so that the bolt cap 10 is vertically aligned with the bolt cap 20, The peripheral end of the bolt cap 10 is inserted into the recessed groove in the recessed groove 70 of the nut cap 20 so that the bolt cap 10 and the nut cap 20 are connected and assembled to each other, The protrusions 40 protruded by the bolts when the rubber hammer strikes are crushed and the bolt caps are mounted. When the protrusions are crushed, the protrusions 40, which are formed in the ends of the bolt supports 30, It does not press on the wall of the cap, Without damage to the cap rock bolt it can maintain the quality.

When the bolt cap protection cap is completely assembled by assembling the bolt cap (10) and the nut cap (20), the bolt cap (10) is fixed And the nut cap 20 rotates together with the nut cap as the nut is loosened so that the unlocking indication line 11 indicated on the nut cap does not vertically coincide and the nut is released when the nut is disengaged. It is a technique that makes it possible to detect the loosening of the nut without disassembling the bolt cap.

It is necessary to fasten bolt nuts in large quantity in industrial plant facilities of railroad power plant signal lamps, and it is an industrial part that can be used for industrial plant facilities. It is equipped with bolt cap and detects bolt cap by vibration. And bolt nut protection cap technology that can expect export of products and transfer of technology abroad.

Claims (5)

The upper bolt cap 10 and the lower nut cap 20 are separated from each other and the inner circumference of the upper bolt cap 10 is radially divided into 4-8 bolt supports 30 ) And one side of the bolt cap is connected to the wall surface of the bolt cap, and the other end of the bolt cap constitutes a two-strand protrusion (40), and the bolt cap mounting rubber hammer is configured to crush two protrusions (40) A nut groove 50 into which a nut angle of a hexagonal-14 angle can be inserted is formed in an inner periphery of the bolt cap 20, and a cylindrical bolt cap 60 is formed around the outer upper end, (11) for detecting the release of a nut in a vertical line perpendicular to the outer surface of the nut cap (10) and the nut cap (10). The upper bolt cap (10) is detachably attached to the bolt support base (30) by a rubber hammer. The upper bolt cap (10) and the lower end nut cap (20) Wherein one end of the bolt cap is connected to the wall surface of the bolt cap and the other end of the bolt cap comprises two protrusions. The nut cap according to claim 1, wherein the nut cap (20) is detachably separated from the upper bolt cap (10) by a lower nut cap (20) (20) forming a nut groove (50) for inserting an angle of -14 angle and forming a cylindrical fitting base (60) on the outer upper circumference surface and being connected and assembled with the upper bolt cap (10) How to use. The nut cap (20) is formed in the nut cap (20) for connecting the upper bolt cap (10) and the nut cap (20) of the nut tightening detection bolt nut protection cap to the nut cap Wherein the nut cap (20) is rotated with only the nut cap and the bolt cap (10) is fixed to the bolt. The method according to claim 1, characterized in that the upper and lower bolt caps (10) and the lower end nut cap (20) are printed on the outer circumferential surface of the upper bolt cap (10) When the nut is loosened and rotated, the nut cap 20 rotates together with the nut, and the indication line 11 for detecting the nut loosening is detected by using the fact that the bolt cap 10 and the nut cap 20 are displaced from each other. A method of using a bolt-nut protective cap comprising a bolt cap (10) and a lower nut cap (20).

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