KR20130118536A - Test device for nut loose - Google Patents

Test device for nut loose Download PDF

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Publication number
KR20130118536A
KR20130118536A KR1020120041482A KR20120041482A KR20130118536A KR 20130118536 A KR20130118536 A KR 20130118536A KR 1020120041482 A KR1020120041482 A KR 1020120041482A KR 20120041482 A KR20120041482 A KR 20120041482A KR 20130118536 A KR20130118536 A KR 20130118536A
Authority
KR
South Korea
Prior art keywords
nut
loosening
housing
bolt
inspection device
Prior art date
Application number
KR1020120041482A
Other languages
Korean (ko)
Inventor
유승원
김승혁
최기혁
김병길
Original Assignee
현대중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020120041482A priority Critical patent/KR20130118536A/en
Publication of KR20130118536A publication Critical patent/KR20130118536A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

A nut loosening inspection device is disclosed. The nut loosening inspection device is a nut loosening inspection device for inspecting the fastening of the bolt and the nut, the housing having a constant diameter and height to which one end is opened and the nut coupled to the bolt can be inserted, the housing side wall And a detector configured to detect whether the upper surface of the nut inserted into the housing is near or in contact within a sensing distance, and a display configured to display whether the nut is loose based on a detection result of the sensor. It is done.

Description

Test device for nut loose}

The present invention relates to a nut loosening inspection device, and more particularly, to a nut loosening inspection device that can quickly and accurately inspect the fastening and loosening of the bolt and nut and can be easily carried.

Bolts and nuts are one of the most widely known as fastening means. The nut is screwed to the rod-shaped body of the bolt and is fastened to each other. For example, when the nut rotates about the body or the bolt rotates about the nut, the bolt and nut are loosened. have.

However, if the bolt and the nut is loosened in this way, it can cause a big problem. For example, when the steel plates having important structural functions are coupled to each other using bolts and nuts, loosening of the bolts and nuts may cause dismantling of the steel plates and serious accidents may occur.

Therefore, it is very important to recognize the loosening of the bolt and nut early and to secure the fastening of the bolt and nut again.

Conventionally, in order to prevent an accident caused by loosening of the nut, the nut is regularly tightened to prevent an accident caused by loosening of the nut.

By the way, such a conventional method must perform a tightening operation by coupling the nut fastening device even for the nut that is not loosened. In particular, in the case of tightening the nut for a special purpose such as a hydraulic nut there is a problem that requires a lot of manpower and time, such as to bind the hydraulic fastening device.

Therefore, in recent years, the method of re-tightening only the nut in which the fastening loosens is determined by measuring the distance from the upper end of the bolt to the fastening nut to determine whether the fastening of the bolt and the nut is loosened.

However, this method has a problem that the inspector is judged on the basis of the measured value, the subjective judgment of the inspector is entered, the accuracy is lowered and the judgment results between the workers may be different from each other.

Therefore, the problem to be solved by the present invention is to provide a nut loosening inspection device that can quickly and accurately inspect the fastening loosening of the bolt and nut to perform a quick action for the nut has been loosened fast.

Nut loosening inspection apparatus according to an embodiment of the present invention is a nut loosening inspection device for inspecting the fastening loosening of the bolt and nut, one end is open and has a constant diameter and height that can be inserted into the nut coupled with the bolt housing; A detector configured to detect whether the upper surface of the nut provided on the sidewall of the housing and inserted into the housing is close or in contact within a sensing distance; And a display unit displaying whether or not the nut is loosened based on a detection result of the detection unit.

Nut loosening inspection device according to an embodiment of the present invention can quickly and accurately inspect the fastening loosening of the bolt and nut to take a quick action for the nut loosening fastening effect that can prevent the accident due to nut loosening in advance have.

In addition, the nut loosening inspection apparatus according to an embodiment of the present invention has an effect that can be easily carried by the user to improve the work convenience and efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS In order to more fully understand the drawings recited in the detailed description of the invention, a brief description of each drawing is provided.
1 is a view showing a nut loosening inspection apparatus according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA of the nut loosening inspection device illustrated in FIG. 1.
Figure 3a is a view showing an example of inspecting the nut is not loosened using the nut loosening inspection apparatus according to an embodiment of the present invention.
3B is a diagram illustrating an example of inspecting a nut in which loosening occurs using a nut loosening test apparatus according to an exemplary embodiment of the present invention.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the embodiments of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

1 is a view showing a nut loosening inspection apparatus according to an embodiment of the present invention, Figure 2 is a view showing a cross-sectional view A-A of the nut loosening inspection device shown in FIG.

1 and 2, the nut loosening inspection apparatus 100 according to the present invention includes a housing 110, a detection unit 120, and a display unit 130.

The nut loosening inspection apparatus 100 further includes a power supply switch 140 for supplying or cutting off power of the battery to the detector 120 and the display 130.

The housing 110 has a cylindrical structure with a predetermined diameter and a height and a hollow inside so that one end is opened and a nut fastened to the bolt to be inspected can be inserted into the inside.

At this time, the inner diameter of the housing 110 is larger than the outer diameter of the nut, the height of the housing 110 is made higher than the threaded portion of the bolt.

In addition, the inner diameter and the height of the housing 110 may be manufactured differently according to the size of the nut to which the fastening loosening and the bolt to which the nut is fastened.

In the embodiment of the present invention, for example, the housing 110 is manufactured in a cylindrical shape, but may be manufactured in various shapes and sizes.

The sensing unit 120 detects whether the upper surface of the nut provided on the side wall of the housing and inserted into the housing 110 approaches or contacts within the sensing distance.

The sensing unit 120 may be provided in pairs so as to face each other as illustrated in the drawing.

The detection unit 120 includes a detection sensor 121 and a fixing means 122. Fixing means 122 includes a fastener (122-1) and the bolt (122-2).

The detection sensor 121 is mounted on the housing 110 by using the fixing means 122.

That is, the detection sensor 121 is fixedly mounted to the inner wall of the housing 110 by coupling with the bolt 122-2 through the fastener 122-1 formed through the housing 110 side.

The fastener 122-1 is formed as a long hole having a predetermined length in the vertical direction to adjust the position where the sensor 121 is mounted.

At this time, the fastener 122-1 is not limited to the above-mentioned long hole, it may be implemented so that a plurality of circular through holes at regular intervals along the longitudinal direction of the housing 110.

The mounting height of the detection sensor 121 is mounted at a higher position than the nut inserted into the housing 110 during the inspection, so that the detection probe (probe) of the detection sensor 121 is positioned above the inserted nut.

The detection sensor 121 may be implemented as a proximity sensor that detects whether the nut approaches within a predetermined distance or a contact sensor that detects direct contact with the nut during inspection.

The detection sensor 121 detects whether the nut inserted into the housing 110 approaches or contacts within the detection distance during the inspection, and generates a detection signal when the nut approaches or contacts within the detection distance to the display unit 130. Output

The display unit 130 includes a first display means 131 and a second display means 132. The first display means 131 may be implemented as an LED lamp having a first color (eg, green), and the second display means 132 may be implemented as a second color (eg, red) LED lamp.

The display unit 130 is turned on or off based on the detection signal output from the detection sensor 121 so that the user can visually check whether the bolt and nut are loosened.

The first display means 131 is turned on when the power supply switch 140 is turned on and the power is applied, indicating that the nut loosening inspection device 100 can be used, and is lit when the fastening state of the bolt and nut is normal. The state is maintained so that the user can visually confirm that the nut has not been loosened.

The second display means 132 is turned on by a detection signal generated when the detection sensor 121 detects the approach or contact of the nut within the sensing distance during the fastening test of the bolt and nut, and the user loosens the fastening of the nut. Make sure you can visually check

At this time, the second display means 132 is turned on and at the same time the first display means 131 is turned off by the detection signal from the detection sensor 121 so that the user can visually determine the tightness of the nut more clearly. It may be implemented.

Nut loosening inspection device 100 according to the present invention is an alarm device (not shown) for generating an alarm signal in response to a detection signal output from the sensor 121 when the loosening occurs during the fastening test of the bolt and nut It may further include.

3A and 3B are views showing an example of use of the nut loosening inspection apparatus according to the embodiment of the present invention.

The nut loosening inspection apparatus 100 allows a nut to be inspected to be inserted to check the loosening of the bolt and the nut. In addition, the detection sensor 121 mounted inside the housing 110 detects whether the nut is in proximity or contact within a predetermined distance and outputs a detection signal.

In addition, the display unit 130 is turned on or off according to the detection signal output from the detection sensor 121 to indicate whether the bolt and nut are loosened so that the user can visually check.

For example, as shown in FIG. 3A, in the case where the fastening of the bolt and the nut does not occur, a distance between the upper surface of the nut inserted into the housing 110 and the detection probe of the detection sensor 121. (d1) is spaced farther than the sensing distance can be detected by the sensor 121, the sensor 121 will not detect the nut.

As a result, the second display means 132 which informs the loosening of the nut through the lighting is not turned on, but the lighting of the first display means 131 which is turned on when the power is supplied is maintained and the bolt and the nut are loosened. Allows the user to visually confirm that they have not

On the other hand, as shown in Figure 3b, in the case of inspecting the nut that is loosened, the separation distance between the upper surface of the nut inserted into the housing 110 and the detection probe (probe) of the detection sensor 121 ( d2) is close to or contact within the distance that the sensor 121 can detect, so the sensor 121 detects the nut and outputs a detection signal.

As a result, the second display means 132 is turned on by the detection signal of the detection sensor 121 to display the user to visually confirm the loosening of the nut. At this time, the first display means 131 is turned off so that the user can clearly check the loosening of the nut.

As a result, the user may immediately recognize the loosening of the bolt and the nut according to whether the second display means 132 is turned on when the fastening of the bolt and the nut is checked. Therefore, by fast and accurate inspection of the loosening of the nut, it is possible to take the action of tightening only on the nut in which the loosening occurs quickly.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: nut loosening inspection device 110: housing
120: detection unit 121: detection sensor
122: fixing means 122-1: fastener
122-2: bolt 130: display portion
131: first display means 132: second display means
140: power supply switch

Claims (7)

In the nut loosening inspection device for checking the loosening of the bolt and nut,
A housing having a constant diameter and height at which one end is opened and into which the nut coupled with the bolt can be inserted;
A detector configured to detect whether the upper surface of the nut provided on the sidewall of the housing and inserted into the housing is close or in contact within a sensing distance; And
And a display unit for displaying whether the nut is loose based on a detection result of the detection sensor. The method of claim 1,
The sensing unit includes:
A sensing sensor provided inside the housing; And
And nut fixing means for fixing the sensor to an inner surface of the housing. 3. The method of claim 2,
Wherein,
A fastener formed through the side surface of the housing; And
Nut loosening inspection device comprising a bolt screwed to the sensor via the fastener. The method of claim 3,
The fastener includes:
The nut loosening inspection device is formed of a long hole having a predetermined length in the vertical direction of the housing to enable the fixed position adjustment of the sensor. 3. The method of claim 2,
The display unit includes:
First display means which is turned on when power is supplied;
And a second display means which is turned on in response to a detection signal output from the detection sensor when the fastening loosening occurs during the fastening loosening inspection of the bolt and the nut. The method of claim 5,
The first display means,
The nut loosening inspection device, characterized in that when the tightening loosening test of the bolt and nut does not occur loosening maintains the lighting state, when the loosening occurs. 3. The method of claim 2,
The nut loosening inspection device,
The nut loosening inspection device further comprises an alarm device for generating an alarm signal in response to a detection signal output from the detection sensor when the fastening loosening occurs during the fastening loosening test of the bolt and nut.
KR1020120041482A 2012-04-20 2012-04-20 Test device for nut loose KR20130118536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120041482A KR20130118536A (en) 2012-04-20 2012-04-20 Test device for nut loose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120041482A KR20130118536A (en) 2012-04-20 2012-04-20 Test device for nut loose

Publications (1)

Publication Number Publication Date
KR20130118536A true KR20130118536A (en) 2013-10-30

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Application Number Title Priority Date Filing Date
KR1020120041482A KR20130118536A (en) 2012-04-20 2012-04-20 Test device for nut loose

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108709582A (en) * 2018-01-03 2018-10-26 远景能源（江苏）有限公司 Monitoring system is fastened using the bolt of proximity sensor
CN113790883A (en) * 2021-09-26 2021-12-14 武汉德恒汽车装备有限公司 Automobile body assembly fastener detection mechanism and detection method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108709582A (en) * 2018-01-03 2018-10-26 远景能源（江苏）有限公司 Monitoring system is fastened using the bolt of proximity sensor
CN113790883A (en) * 2021-09-26 2021-12-14 武汉德恒汽车装备有限公司 Automobile body assembly fastener detection mechanism and detection method thereof
CN113790883B (en) * 2021-09-26 2023-08-25 武汉德恒汽车装备有限公司 Automobile body component fastener detection mechanism and detection method thereof

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