KR20130084089A - Apparatus for measureing crane girder deformation - Google Patents

Apparatus for measureing crane girder deformation Download PDF

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Publication number
KR20130084089A
KR20130084089A KR1020120004836A KR20120004836A KR20130084089A KR 20130084089 A KR20130084089 A KR 20130084089A KR 1020120004836 A KR1020120004836 A KR 1020120004836A KR 20120004836 A KR20120004836 A KR 20120004836A KR 20130084089 A KR20130084089 A KR 20130084089A
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KR
South Korea
Prior art keywords
girder
distance measuring
deformation
crane
distance
Prior art date
Application number
KR1020120004836A
Other languages
Korean (ko)
Inventor
김태형
이종건
Original Assignee
대우조선해양 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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Application filed by 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR1020120004836A priority Critical patent/KR20130084089A/en
Publication of KR20130084089A publication Critical patent/KR20130084089A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00—Safety gear
    • B66C15/06—Arrangements or use of warning devices
    • B66C15/065—Arrangements or use of warning devices electrical
    • 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
    • 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
    • G01B21/32—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 the deformation in a solid

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Control And Safety Of Cranes (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE: A crane girder transformation measurement apparatus is provided to measure the deformation degree of a girder by measuring the distance of each portion of the girder in the stationary state or operational state of a crane. CONSTITUTION: A crane girder transformation measurement apparatus comprises a distance measuring part. The distance measuring part measures distance change of each portion of a girder (210) in order to measure shape change of the girder. The distance measuring part comprises a distance measuring part and a support stand (120). The distance measuring part is installed on a neighboring location of the girder. The support stand supports the distance measuring part in order to be located on the neighboring location of the girder.

Description

Crane girder deformation measuring device {APPARATUS FOR MEASUREING CRANE GIRDER DEFORMATION}

The present invention relates to a crane girder deformation measuring apparatus for measuring the occurrence of displacement of the girder of the crane, and outputs an alarm when a deformation of more than the limit occurs.

Currently, cranes or yards used in many factories, tower cranes used outdoors, house cranes, and goliath cranes are used to transport heavy loads.

Cranes, which have been used for a long time with the development of industrial technology, are now reaching the end of their life due to a lot of aging and fatigue load. In order to use these cranes safely, it is necessary to have a device that makes it easier to determine the drooping or fatigue stress of the crane and to recognize the worker in real time.

Cranes currently in use for this need are designed and built to ensure mechanical safety by safety factor calculation at the time of initial manufacture.

However, the above-described cranes of the prior art determine the allowable rod and use only the weight measurement of the electric winch.

Therefore, the crane device of the prior art does not have a function of indicating only the allowable load but showing or warning problems occurring in the shape and deformation stiffness of the crane girder. Accordingly, the crane of the prior art has a problem that can not prevent the safety accident due to the deformation of the girder.

Accordingly, the present invention is to solve the above-mentioned problems of the prior art, and after measuring the shape deformation of the girder of the crane, and visually displays the degree of shape deformation, and generates an alarm when the shape deformation exceeds the limit. Therefore, it is an object of the present invention to provide a crane girder shape deformation measuring apparatus that can prevent the occurrence of safety accidents due to the deformation of the crane girder, damage or failure of the crane girder.

Crane girder deformation measuring apparatus of the present invention for achieving the above object, in the crane device provided with a hook, an electric winch and a girder, in order to measure the change in the shape of the girder distance change for each part of the girder It comprises a; distance measuring unit for measuring.

The distance measuring unit includes a distance measuring unit installed at an adjacent position of the girder; and a support for supporting the distance measuring unit to be positioned at an adjacent position of the girder.

The distance measuring unit is installed on the upper surface of the girder; a plurality of reflecting members for reflecting the distance measurement signal of the distance measuring unit; characterized in that it further comprises a.

The crane girder deformation measuring apparatus may further include a display unit configured to perform communication with the distance measuring unit to display a deformation degree of the girder based on the distance measured by the distance measuring unit.

The crane girder deformation measuring apparatus may further include an alarm generating unit configured to perform communication with the distance measuring unit to output an alarm when the deformation of the girder measured by the distance measuring unit exceeds a predetermined limit. It is characterized by.

The crane girder measuring device of the present invention having the above-described configuration is capable of measuring the degree of deformation of the girder by bending, tilting, etc. by measuring the distance of each part of the girder in the stationary state or working state of the crane, An alarm is output when the measured degree of deformation of the girders exceeds a preset limit value, which significantly improves the safety of crane operation.

In addition, the present invention can prevent the damage or failure of the crane device due to the deformation of the girder by constantly monitoring the degree of deformation of the crane girder, thereby reducing the maintenance work of the crane device to reduce the maintenance cost Provides savings.

1 is a partial perspective view of a crane 200 equipped with a crane girder deformation measuring apparatus according to an embodiment of the present invention,
2 is a functional block diagram of the ultrasonic measuring unit 130 of FIG.

In the embodiment of the present invention, the distance measuring unit measures the shape deformation of the girder by measuring the distance of each part of the girder 210 using ultrasonic waves.

However, the distance measuring unit applied to the crane girder deformation measuring apparatus of the present invention can be applied to all the distance measuring devices that can measure the distance by using sensors such as ultrasonic, laser, infrared, RF signal, electromagnetic sensor, various distance measurement It is apparent that crane girder deformation measuring apparatuses to which the apparatus is applied are included in the scope of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing embodiments of the present invention.

1 is a partial perspective view of a crane 200 equipped with a crane girder deformation measuring apparatus according to an embodiment of the present invention, Figure 2 is a functional block diagram of the ultrasonic measuring unit 130 of FIG.

As shown in Figure 1, the crane girder deformation measuring apparatus 100

In the crane (200) having a girder 210 is installed on the upper side and provided with an electric winch 260 and a hook 270 for the lifting and lowering of the workpiece, the upper surface of the girder 210 on one side of the girder The support 120 is installed to have a predetermined interval, the ultrasonic measurement unit 130 as an embodiment of the distance measuring unit of the present invention installed on the end of the support 120, and a plurality of installed on the upper surface of the girder 210 The reflection member 139, the display unit 140 indicating the shape deformation degree of the girder 210 measured by the ultrasonic measuring unit 130, and the shape deformation of the girder 210 measured by the ultrasonic measuring unit 130 is the limit If exceeded is configured to include an alarm generating unit 150 for receiving an alarm signal from the ultrasonic measuring unit 130 and outputs an alarm.

In addition, the ultrasonic measuring unit 130 further comprises a plurality of reflecting members 139 installed on the upper surface of the girder 210. The reflective member 139 is installed to have a predetermined distance from the upper surface of the girder 210, or is installed at every intersection of the diameter and the girder 210, the center around the ultrasonic measuring unit 130, and various It can be installed to have a gap.

As shown in FIG. 2, the ultrasonic measurement unit 130 controls the driving of the ultrasonic transmitter 131, the ultrasonic receiver 133, the ultrasonic transmitter 131, and the ultrasonic receiver 133, and in the ultrasonic transmitter 131. When the transmitted ultrasound is received by the ultrasonic receiver 133 side, the control unit 135 having a calculation unit for calculating and calculating the distance and the deformation degree of each part of the girder 210 and the girder measured from the control unit 135 ( The communication unit 137 outputs the deformation degree information of the 210 to the display unit 140 and outputs an alarm signal to the alarm generation unit 150 when the deformation degree of the girder 210 exceeds the limit.

In the above configuration, the control unit 135 delays the reception of the ultrasonic waves reflected at the respective reflection positions when the ultrasonic waves transmitted from the ultrasonic transmitter 131 are reflected from the upper portions of the girder 210 and received by the ultrasonic receiver 133. Using the time, the distance of each reflection position on the upper part of the girder 210 is calculated. In addition, the degree of deformation of the girder 210 is calculated by calculating the degree of deformation of the distance to the respective reflection position on the upper part of each girder 210. And the deformation measurement information of the girder is output to the display unit 140 through the communication unit 137, and if the degree of deformation exceeds a certain limit to output an alarm signal to the alarm generating unit 150 through the communication unit 137. It is composed.

In addition, the reflective member 139 installed at a predetermined position on the upper surface of the girder 210 is installed to reflect the ultrasonic signal transmitted from the ultrasonic measuring unit 130 to the ultrasonic receiving unit 133.

In this case, the reflective member 139 may not be installed when the signal for measuring the distance of each portion of the girder 210 is reflected by the spherical waveform on the reflective surface.

However, when using a signal having a straightness, such as a laser, the reflecting member 139 is installed with a predetermined angle to reflect the signal having a straightness to the signal receiving side, such as the ultrasonic receiving unit 133.

The display unit 140 may be applied to various display devices such as LED, LCD, CRT.

In the crane girder deformation measuring apparatus having the above-described configuration, the ultrasonic measuring unit 130 positioned above the crane 200 periodically transmits ultrasonic waves at predetermined time intervals using the ultrasonic transmitting unit 131. The transmitted ultrasonic waves are received at the ultrasonic receiving unit 133 after being reflected at respective reflection positions of the upper surface of the girder 210. For each received ultrasonic signal for each reflection position, the control unit 135 detects a time delay between ultrasonic transmission and reception for each received ultrasonic signal by using a processing unit. The distance between the reflection point and the ultrasonic measurement unit 130 is calculated and measured.

The information thus measured is compared with the distance information between the preset reflection position of each upper part of the girder 210 and the ultrasonic measurement unit 130 to calculate the degree of deformation of the girder 210. In this case, the distance information between each of the preset positions of the upper portions of the girders 210 and the ultrasonic measurement unit 130 may be measured and stored at the time of initial manufacture of the crane.

When the deformation degree of the girder 210 is calculated, the control unit 135 transmits the measured deformation degree information of the girder 210 to the display unit 140 to be visually displayed on the display unit 140, thereby allowing the operator to display the girder 210. Allows you to check the variation of in real time. In this case, the deformation degree of the girder 210 may be all shape change information, such as a degree of bending and a degree of inclination from the support point.

In addition, the control unit 135 compares the measured deformation degree of the girder with the deformation limit of the preset girder and outputs an alarm signal to the alarm generator 150 when the deformation degree of the girder 210 exceeds the preset limit. By doing so, before the accident or breakage of the crane 200 or by the worker stops the operation of the crane, or by lowering the load carried by the crane 200 to remove the load applied to the crane 200 It shall be possible to prevent the failure, breakage or safety accident of the crane.

100: crane, 210: girder, 120: support, 130: ultrasonic measurement unit
131: ultrasonic transmitter, 133: ultrasonic receiver, 135: control unit, 137: communication unit
139: reflective member, 140: display unit, 150: alarm generating unit, 260: full swing winch, 270: hook

Claims (4)

In the crane device having a hook, an electric winch and a girder,
And a distance measuring unit measuring a change in distance with respect to each part of the girder in order to measure a shape change of the girder.
The distance measuring unit may measure,
Distance measuring unit is installed in the adjacent position of the girder; And,
And a support for supporting the distance measuring part so as to be positioned on an adjacent position of the girder. The method of claim 1, wherein the distance measuring unit,
Crane girder deformation measuring apparatus further comprises a; a plurality of reflecting members installed on the upper surface of the girder to reflect the distance measurement signal of the distance measuring unit. The method according to claim 1,
And a display unit configured to perform communication with the distance measuring unit to display a deformation degree of the girder based on the distance measured by the distance measuring unit. The method according to claim 1,
Crane girder deformation measuring device further comprises; an alarm generating unit for outputting an alarm when the deformation of the girder measured by the distance measuring unit exceeds the predetermined limit by performing communication with the distance measuring unit. .
KR1020120004836A 2012-01-16 2012-01-16 Apparatus for measureing crane girder deformation KR20130084089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120004836A KR20130084089A (en) 2012-01-16 2012-01-16 Apparatus for measureing crane girder deformation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120004836A KR20130084089A (en) 2012-01-16 2012-01-16 Apparatus for measureing crane girder deformation

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KR20130084089A true KR20130084089A (en) 2013-07-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160046525A (en) 2014-10-21 2016-04-29 오철규 System for measuring skew level of goliath crane
KR20180083198A (en) 2017-01-12 2018-07-20 두산중공업 주식회사 Measuring Apparatus For Crane Girder, And Operating Method Thereof
KR102510248B1 (en) 2022-10-14 2023-03-17 주식회사 파나시아 Jig apparatus for center survey of crane wheel and crane wheel center survey method using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160046525A (en) 2014-10-21 2016-04-29 오철규 System for measuring skew level of goliath crane
KR20180083198A (en) 2017-01-12 2018-07-20 두산중공업 주식회사 Measuring Apparatus For Crane Girder, And Operating Method Thereof
KR102510248B1 (en) 2022-10-14 2023-03-17 주식회사 파나시아 Jig apparatus for center survey of crane wheel and crane wheel center survey method using the same

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