CN107401994B - Portable calibration tester for a measuring device with a shielding - Google Patents
Portable calibration tester for a measuring device with a shielding Download PDFInfo
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- CN107401994B CN107401994B CN201710352347.6A CN201710352347A CN107401994B CN 107401994 B CN107401994 B CN 107401994B CN 201710352347 A CN201710352347 A CN 201710352347A CN 107401994 B CN107401994 B CN 107401994B
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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
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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
- G01B21/02—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 length, width, or thickness
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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
- G01B21/02—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 length, width, or thickness
- G01B21/08—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 length, width, or thickness for measuring thickness
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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
- G01B21/18—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 depth
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- Pathology (AREA)
- Immunology (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Measurement Of Radiation (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention provides a portable check tester of a measuring instrument with a shielding device, which comprises: a gauge body having a press-in tester and a displacement measuring device, the thickness measuring device being detachably coupled to one side of an operation portion formed on an upper portion of the gauge body, and a shield for shielding penetration of radiation being coupled to an outer peripheral surface of the gauge body; a rectangular case cover, the upper end of which supports and is combined with a connecting clamp formed at the lower end of the measuring instrument main body; and a case main body having a load checker built therein for measuring a load applied when the test piece is pressed into the press-in portion of the press-in tester, wherein the case main body is coupled to a lower end of the case cover.
Description
Technical Field
The invention relates to a portable verification Tester (portable verification Tester) with a measuring instrument of a shielding device (radial shield). More particularly, the present invention relates to a portable verification tester for a measuring instrument (measurement instrument) having a shield, which can prevent errors in electronic components and the like inside the measuring instrument even when the environment in which the measuring instrument is used is a place where radiation is present, such as a nuclear power plant, and can accurately perform measurement, or can confirm the measurement error of the measuring instrument in time at the use site to improve the precision and reliability of the measurement test, and can reduce the volume and weight of the tester to facilitate portability and mobility.
Background
Generally, a method of evaluating physical properties of a material using a measuring instrument is a method which has been attracting attention at present, and the method using a measuring instrument has the greatest advantage that it can be used without damaging facilities, and therefore the evaluation method is very simple.
Fig. 1 is a partial sectional view showing a conventional measuring instrument.
The measuring instrument of korean issued patent (10-1117661) disclosed in fig. 1 includes: a driver 105 disposed inside the tester main body; a ball screw (ball screw)130 that is connected to the shaft of the driver 105 through a coupling (coupling) to rotate; a nut 115 coupled to the ball screw 130 via balls; a slider 137 including a cylinder coupled to the nut 115 in an interlocking manner and sliding along a rotation axis; a press-in part (indenter)155 coupled to the lower side of the slider 137 through a press-in part holder 150 as a medium so as to be interlocked with the slider 137, thereby applying a press-in load to the test piece; a load sensor 145 coupled to a lower side of the drum 135 and detecting a load transmitted from the push-in portion 155 to the test piece when the slider 137 slides; and a displacement measuring instrument 173 including a main sensor 170, a sensor holder 165, and a sensor tip 160, and configured to detect the depth of the push-in portion 155 pushed into the test piece when the slider 137 slides.
Such a conventional measuring instrument has the following problems: as the number of tests increases, the measurement deviation of the measurement displacement becomes large due to vibration and resonance transmitted to the meter, thereby increasing the detection deviation, and a complicated additional process such as a need to verify that the meter is moved by an additional facility having a verifier to perform a verification step, etc. is required.
In particular, when the measuring instrument is used in a place where radiation is present, such as a nuclear power plant, an error occurs in electronic components and the like inside the measuring instrument, which increases a measurement deviation and lowers precision and reliability of the measuring instrument.
Disclosure of Invention
Technical problem to be solved by the invention
In view of the above, the present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to prevent errors in electronic components and the like inside a measuring instrument even when the environment in which the measuring instrument is used is a place where radiation is present such as a nuclear power plant, and to enable accurate measurement.
Further, it is an object of the present invention to reduce measurement variation of displacement due to vibration and resonance in a press-in test, thereby facilitating evaluation of mechanical properties, and to be applicable to a wide range of test pieces ranging from a small area such as a thin film and a micro device to a large structure in the press-in test.
Further, it is an object of the present invention to enable measurement errors of a push tester, a displacement measuring device, a thickness measuring device, and the like to be checked at any time in a use site, thereby improving accuracy of measurement tests and reliability.
In addition, the volume and weight of the calibrator for calibrating and measuring errors are reduced, thereby facilitating carrying and improving mobility.
The object of the present invention is not limited to this, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.
Technical scheme
In order to achieve the above object, an embodiment of the present invention provides a portable verification tester having a measurement instrument with a shield, including: a gauge body including a press-in tester and a displacement measuring device, the thickness measuring device being detachably coupled to one side of an operation portion formed in an upper portion of the gauge body, and a shield for shielding transmission of radiation being coupled to an outer peripheral surface of the gauge body; a rectangular case cover, the upper end of which supports and is combined with a connecting clamp formed at the lower end of the measuring instrument main body; and a case main body having a load checker built therein and coupled to a lower end of the case cover, wherein the load checker measures a load applied when the press-in portion of the press-in tester presses in the test piece.
Further, there is provided a portable verification tester having a measuring instrument with a shield, wherein the displacement measuring instrument includes: a guide member coupled to the press-in portion tester so as to measure a depth of the press-in portion pressed into the test piece; a measuring rod which is connected with the guide piece in a penetrating way and slides, and the end part of the measuring rod is supported by a test piece; a reference scale coupled to a measuring rod of the displacement measuring device and sliding together with the measuring rod; and a sensor which is combined with the press-in tester and senses the displacement of the reference scale.
Also, a portable verification tester for a meter having a shield is provided, wherein the load verifier includes: a load sensor capable of measuring a press-fitting load of the press-fitting portion; and a horizontal adjustment member coupled to a lower end of the load cell and moving a center of the load cell to a center of the press-fitting portion along a first axis and a second axis on a plane perpendicular to an axial direction of the press-fitting portion.
Further, there is provided a portable verification tester of a measuring instrument having a shield, further including a displacement checker which is built in the housing main body and measures a displacement of a movement of a measuring rod of the displacement measurer, the displacement checker including: a displacement verification sensing member which is arranged in the housing main body at a position separated from the displacement measurer and is provided with a displacement sensor capable of measuring the displacement of the verification rod; and a lever moving member having a lever supporting portion and a power driving portion, wherein the measuring lever and the calibration lever are respectively supported and mounted on one side and the other side of the lever supporting portion and move up and down, and the power driving portion has a driving gear connected to a driven gear formed at the lever supporting portion and moves up and down the lever supporting portion by a driving force of a motor.
Advantageous effects
According to the embodiment of the present invention, even when the environment in which the measuring instrument is used is a place where radiation is present such as a nuclear power plant, errors in electronic components and the like inside the measuring instrument can be prevented, and accurate measurement can be performed.
Further, according to the embodiments of the present invention, it is possible to reduce measurement variation of displacement due to vibration and resonance in the indentation test, which is advantageous for evaluation of mechanical properties, and it is possible to apply the present invention to test pieces ranging from small fields such as thin films and micro devices to large structures in the indentation test.
Further, according to the embodiments of the present invention, the measurement errors of the indentation tester, the displacement measuring device, the thickness measuring device, and the like can be checked at any time in the field of use, and the accuracy and reliability of the measurement test can be improved.
In addition, according to the embodiment of the invention, the volume and the weight of the calibrator for calibrating and measuring the deviation are reduced, so that the calibrator is convenient to carry and can improve the mobility.
Drawings
Fig. 1 is a partial sectional view showing a conventional measuring instrument.
FIG. 2 is a perspective view of a portable verification tester showing a meter having a shield according to an embodiment of the present invention.
Fig. 3 and 4 are exploded perspective views illustrating a portion of a portable verification tester having a shielded meter in accordance with an embodiment of the present invention.
FIG. 5 is a partial cross-sectional view of a portion of a portable verification tester showing a meter having a shield in accordance with an embodiment of the present invention.
FIG. 6 is a cross-sectional view of a portion of a portable verification tester showing a meter having a shield in accordance with an embodiment of the present invention.
Fig. 7 to 10 are exploded perspective views illustrating a part of a portable verification tester having a measuring instrument with a shield according to an embodiment of the present invention.
Fig. 11 and 12 are cross-sectional views illustrating a portion of a portable verification tester having a shielded meter in accordance with an embodiment of the present invention.
Description of the reference numerals:
201: the ultrasonic thickness measuring device 205: press-in tester
207: displacement measuring device 210: measuring instrument main body
215: the shield 220: shell cover
223: thickness measuring device 225: shell main body
230: the load checker 240: level adjusting component
250: displacement checker
Detailed Description
Some embodiments of the invention are explained in detail below by means of schematic drawings. It should be noted that, when reference numerals are attached to the structures in the respective drawings, the same reference numerals are used as much as possible even when the structures in other drawings are denoted by the same reference numerals. In describing the present invention, detailed descriptions of related known structures or functions will be omitted if they are considered to be disadvantageous for understanding of the embodiments of the present invention.
In describing the configuration of the embodiment of the present invention, terms such as first, second, a, B, a, and B can be used. Such terms are merely used to distinguish one structure from another structure and do not limit the nature, order, or sequence of the corresponding structures according to the above-described terms. When a structure is referred to as being "connected," "coupled," or "in contact with" another structure, it is to be understood that the structure may be directly connected or in contact with the other structure, or that the structure may be "connected," "coupled," or "in contact with" another structure.
Figure 2 is a perspective view of a portable verification tester showing a meter having a shield according to an embodiment of the present invention, figures 3 and 4 are exploded perspective views showing a portion of a portable verification tester having a shielded meter in accordance with an embodiment of the present invention, figure 5 is a partial cross-sectional view showing a portion of a portable verification tester having a shielded meter in accordance with an embodiment of the present invention, figure 6 is a cross-sectional view of a portion of a portable verification tester showing a meter having a shield according to an embodiment of the present invention, figures 7 through 10 are exploded perspective views illustrating a portion of a portable verification tester having a shielded meter in accordance with one embodiment of the present invention, fig. 11 and 12 are cross-sectional views illustrating a portion of a portable verification tester having a shielded meter in accordance with an embodiment of the present invention.
As shown in these figures, a portable verification tester 200 of a gauge with a shield according to an embodiment of the present invention includes: a meter body 210 having a press-in tester 205 and a displacement measuring instrument 207, and having an ultrasonic thickness measuring instrument 201 detachably coupled to one side of an operation unit 203 formed in an upper portion, and a shielding device 215 capable of shielding transmission of radiation coupled to an outer circumferential surface thereof; a rectangular case cover 220 to which a connection jig 211 formed at the lower end of the meter main body 210 is coupled in a supported manner at the upper end; and a case main body 225 which houses a load checker 230 therein and is coupled to a lower end of the case cover 220, wherein the load checker 230 is capable of measuring a load applied while the press-in portion 205a of the press-in tester 205 is pressed into the test piece.
According to an embodiment of the present invention, the meter main body 210 having the press-in tester 205, the displacement measuring instrument 207, and the ultrasonic thickness measuring instrument 201 is coupled to the housing cover 220 so that the shield 215 is coupled to the outer circumferential surface, the thickness checker 223 is coupled to the upper side of the housing cover 220, and the load checker 230 and the displacement checker 250 are built in the housing main body 225 coupled to the lower end of the housing cover 200.
The push-in tester 205 to which the sensor 208 of the displacement measuring instrument 207 is coupled to a slider (see 137 in fig. 1) so as to be lifted and lowered together with the slider (see 137 in fig. 1) inside the meter main body 210, and the push-in portion 205a is coupled to the lower end of the push-in tester 205 via a push-in portion holder 205 b.
The displacement measuring instrument 207 is coupled to a side surface of the press-in tester 205 so as to measure the depth to which the press-in portion 205a is press-fitted into the test piece, and the displacement measuring instrument 207 includes: a guide 213 coupled to the press tester 205; a measurement rod 207a which is slidably coupled to a guide 213 so as to penetrate therethrough and whose end is supported by a test piece; a scale bar 217 coupled to the measuring rod 207a and sliding together with the measuring rod; a sensor 208 coupled to the indentation tester 205 and sensing the position of the scale 217.
The guides 213 are disposed on one side and the other side of the measurement rod 207a, fixed to the press-in tester 205, and provided in a pair, and a through hole 213a for sliding the measurement rod 207a is formed inside each guide 213 to form a cylindrical shape, and the outer circumferential surface of the guide 213 is supported and coupled to the press-in tester 205, and thus fixed in the axial direction when the measurement rod 207a moves up and down.
The measuring rod 207a is formed in a long rod shape, is inserted into each through hole 213a of the pair of guides 213, and is lifted and lowered in the vertical direction together with the scale 217 during press-fitting test.
The reference scale 217 is coupled to the measuring rod 207a between the vertically arranged guide members 213 and has a through hole 217a formed therein to which the measuring rod 207a can be coupled, and a communication hole 217b formed in one side surface to be communicated with the through hole 217a, so that each fixing member (not shown) coupled to the communication hole 217b is fixed to the measuring rod 207a through the medium.
An elastic member 219 that elastically supports the scale 217 and the measuring rod 207a during press-in testing is coupled between the upper end of the scale 217 and the guide 213 disposed on the upper side, so that the scale 217 and the measuring rod 207a can be restored to their original positions by the elastic member 219 if the press-in load is removed during repeated press-in tests.
Here, the sliding support member 222 may be a common ball bearing (ball bearing), a needle bearing (needle bearing), or the like, and a cross roller bearing (cross roller bearing) is illustrated as an example of the present invention.
The sensor 208 is disposed at a position facing the reference scale 217 with a space therebetween, and is capable of measuring the depth of press-fitting of the press-fitting portion 205a by sensing the position at which the reference scale 217 is raised and lowered, and the sensor 208 is coupled to and fixed to the press-fitting tester 205 by a pair of connection support members 218 that support both side surfaces of the press-fitting tester 205 and both side surfaces of the sensor 208.
In such an embodiment of the present invention, since the reference scale 217 is integrally supported by being coupled to the measuring rod 207a during the elevation, and the reference scale 217 is supported by the sensor 208 main body by the sliding support member 222, the vibration caused by the vibration can be reduced, and the elevation can be performed without being biased to any side and firmly supported.
Thus, the standard deviation of the yield strength for the press-in tester of an embodiment of the present invention is significantly reduced compared to the standard deviation of the yield strength according to the existing press-in tester.
On the other hand, since the ultrasonic thickness measuring instrument 201 is detachably coupled to one side of the operation portion 203 (formed at the upper portion of the instrument main body 210) and the instrument is coupled to the outer peripheral surface of the instrument 210 with the shield 215 that can shield the transmission of radiation, even when the environment around which the instrument is used is a place where radiation is present such as a nuclear power plant, it is possible to prevent errors from occurring in the electronic components and the like inside the instrument main body 210, and to perform accurate measurement.
A connection jig 211 formed at the lower end of such a meter main body 210 supports and is coupled to the upper end of the case cover 200, and the lower end of the case cover 220 is coupled to the upper end of the case main body 225.
The meter main body 210 is formed in a cylindrical shape, and a plurality of the shielding members 215 are closely attached to the outer peripheral surface of the meter main body 210, and the shielding members 215 are detachably attached to the outer peripheral surface of the meter main body 210, so that the meter main body can be used in an environment where shielding of radiation is unnecessary in a state where the shielding members 215 are removed.
The shield 215 is constituted by a shield plate 214, a shield cover 216, and the like, wherein the shield plate 214 is formed of a radiation shielding material and is in close contact with the outer peripheral surface of the meter main body 210, the shield plate 214 is formed in a curved plate shape which is formed to be long in the axial direction, and the shield cover 216 is formed with a coupling groove 216a which can be inserted into the shield plate 214 in the inner peripheral surface thereof, and is formed with a coupling hole which couples the shield cover to the meter main body 210 by a fastening member.
The shield plate 214 is formed of a heavy metal such as lead or ceramic that can shield radiation, and is closely attached to the outer peripheral surface of the meter main body 210, and the shield cover 216 is coupled to the meter main body 210 so as to surround the shield plate 214 such that the shield plate 214 can be attached to and detached from the meter main body 210.
The shield cover 216 has a coupling groove 216a formed on an inner peripheral surface thereof in accordance with the shape of the shield plate 214, and is coupled to the outer peripheral surface of the meter main body 210 by a fastening member or the like in a state where the shield plate 214 is inserted into the coupling groove 216a, and as described above, when the meter is measured in an environment where shielding of radiation is not necessary, the meter can be used after removing the heavy shield plate 214, and thus is more convenient to carry and move.
Further, a thickness checker 223 is formed at a position spaced apart from the coupling jig 211 on the upper side of the housing cover 220 so that the thickness of the ultrasonic thickness measuring device 201 coupled to the measuring device main body 210 can be checked, and the thickness checker 223 is formed in a stepped shape whose height is raised at a constant pitch so that the thickness can be measured at each step in sequence.
The thickness checker 223 forms the height of each step at a predetermined height by precision machining in advance, and can check whether the ultrasonic thickness measuring device 201 has normally measured the measurement value immediately on site by using the height as a target, thereby checking the measurement error occurring on site at any time.
On the other hand, the load checker 230 is built in the case main body 225, wherein the load checker 230 measures a load applied when the press-fitting portion 205a is press-fitted with the test piece, and the load checker 230 includes: a load sensor 231 that measures a press-fitting load of the press-fitting portion 205; and a horizontal adjustment member 240 coupled to a lower end of the load cell 231 and moving a center of the load cell 231 along a first axis and a second axis on a plane perpendicular to an axial direction of the press-fitting portion 205a so as to move the center of the load cell 231 to the center of the press-fitting portion 205 a.
The load sensor 231 includes a first sensing member 231a coupled to the upper end portion of the leveling member 240, a second sensing member 231b, and the like, wherein the second sensing member 231b is formed to protrude perpendicularly from the center of the first sensing member 231a with respect to the first sensing member, and a support groove 232 formed with a concave spherical surface is formed at the upper end portion.
Here, the first sensing member 231a and the second sensing member 231b may be formed in an integrated type, or may be separately formed and then coupled to each other, and the error of the load value measured by a load sensor (not shown) additionally formed in the press tester 205 can be verified by sensing the press-fitting load of the press-fitting portion 205a at the time of press-fitting test.
In fact, in order to verify the load measurement value of the load sensor (not shown) built in the press-in tester 205, not the load measurement value in the press-in test, the press-in portion 205a is coupled to the connection member 206 to apply the press-in load to the second sensor member 231b in order to prevent the press-in portion 205a from being damaged or deformed, and here, the upper end portion of the connection member 206 is formed with an insertion hole 206b into which the press-in portion 205a can be inserted, and the lower end portion of the connection member 206 is formed with a ball portion 206a formed in a convex spherical surface and inserted into the support groove 232 of the second sensor member 231 b.
The ball portion 206a of the connection member 206 and the support groove 232 of the second sensing member 231b are formed in spherical surfaces corresponding to each other, and the center of the load sensor 231 can be moved by the horizontal adjustment member 240 so that the axial center of the press-fitting portion 205a and the center of the spherical surface can be coaxially subjected to a vertical load.
In this way, the outer peripheral surface shape of the ball portion 206a and the inner peripheral surface shape of the support groove 232 are formed in a spherical surface, and a load is applied to the centers of the ball portion 206a and the support groove 232, so that the transmission direction of the load is uniform, whereby the load applied to the center axis of the second sensing member 231b can be accurately measured.
The horizontal adjustment member 240 includes a lower end member 245, an intermediate member 243, an upper end member 241, and the like, wherein the lower end member 245 is fixed to the housing main body 225 so that the center axes of the first and second sensing members 231a and 231b can be aligned coaxially with the center axis of the press-fitting portion 205a, the intermediate member 243 is coupled to the upper side of the lower end member 245, and the upper end member 241 is coupled to the upper side of the intermediate member 243.
The upper member 241 and the intermediate member 243 move on a plane perpendicular to the center axis of the press-fitting portion 205a along a first axis and a second axis, which can constitute X-Y axes perpendicular to each other, and in describing the present invention, the X axis in any one direction is referred to as a first axis and the Y axis perpendicular to the X axis is referred to as a second axis.
The first sensing member 231a and the second sensing member 231b are coupled to or integrated with the upper end member 241, and a first guide protrusion 241a is formed to be long in the first axial direction on the lower side of the upper end member 241 contacting the intermediate member 243, and coupled to a first guide groove 243b of the intermediate member 243 formed in a corresponding manner.
Further, since the first adjusting part 242 that moves the screw in the first axial direction is formed in the intermediate member 243, the screw end supports the first guide protrusion 241 and moves toward the first axis according to the rotation of the first adjusting part 242.
Further, a second guide protrusion 243a is formed on the lower side of the intermediate member 243 to be long in the second axial direction, and is coupled to a second guide groove 245a of a lower end member 245 formed in a corresponding manner, and a second adjusting portion 246 that performs screw movement in the second axial direction is formed on the lower end member 245, so that the screw portion end is moved in the second axial direction while supporting the second guide protrusion 243a according to the rotation of the second adjusting portion 246.
Therefore, the user can move the center of the load sensor 231 by aligning the center axes of the first and second sensing members 231a and 231b coaxially with the center axes of the press-fitting portion 205a and the connecting member 206 while rotating the first and second adjusting portions 242 and 246.
On the other hand, a displacement checker 250 capable of measuring the displacement of the movement of the measurement rod 207a of the displacement measurer 207 is built in the housing main body 225, and the displacement checker 250 includes: a displacement verification sensor 253 which is provided in the housing body 225 at a position spaced apart from the displacement measuring instrument 207 and has a displacement sensor 251 for measuring the displacement of the verification lever 257; and a lever moving member 255 including a lever supporting portion 254 and a power driving portion 252, wherein the measuring lever 207a and the verifying lever 257 are respectively supported and mounted to one end and the other end of the lever supporting portion 254 to move up and down, and the power driving portion 252 includes a driving gear 256a connected to a driven gear 256 formed at the lever supporting portion 254 to move the lever supporting portion 254 up and down by a driving force of a motor 263.
Here, the position verification sensing member 253 has a sliding portion 258, which is coupled to the verification lever 257 and the displacement sensor 251 to move up and down, and a fixing portion 259, which is fixed to the case body 225 and has a second gear 267 connected to a first gear 269 (formed in the sliding portion 258), and the like.
That is, a sliding part 258 is coupled to one side surface of a fixing part 259 fixed to the housing body 225, the sliding part 258 is coupled to the calibration lever 257 and the displacement sensor 251, a guide protrusion 258a is formed on the sliding part 258, a guide groove 259a corresponding to the guide protrusion 258a is formed on the fixing part 259, and the guide protrusion and the guide groove are coupled to each other in a snap-fit manner, so that the sliding part 258 moves up and down.
The adjustment knob 259b is inserted through and coupled to the fixing portion 259, and can rotate the second gear 267 to move the sliding portion 258 up and down.
That is, the first gear 269 is coupled to the guide boss 258a in the vertical longitudinal direction, and the second gear 267 is formed on the shaft of the adjustment knob 259b penetrating the fixing portion 259, so that when the adjustment knob 259b is rotated, the sliding portion 258 is moved up and down by the first gear 269 engaged with the second gear 267, and the end position of the check lever 257 can be moved to the upper side surface of the lever supporting portion 254.
Here, the first gear 269 and the second gear 267 may be a rack and pinion (respectively).
The lever moving member 255 is generally composed of a power driving unit 252, the power driving unit 252 having a motor 263 and a driving gear 256a, and a lever supporting unit 254, etc., the lever supporting unit 254 being moved up and down by the force of the motor 263 formed in the power driving unit 252.
The power driving part 252 has a motor 263 formed at an upper end of a body fixed to the casing body 225, and a driving gear 256a rotatably supported by a bearing 261 and formed inside the body is coupled to a motor shaft 257 to rotate via a coupling 268.
A driven gear 256 that engages with the driving gear 256a of the power driving unit 252 is formed at the rear end of the lever support portion 254, so that the lever support portion 254 is moved up and down while the motor 263 is operated to make a rotational movement into a linear movement, and an adjustment knob 259b that is connected to the motor shaft 257 so as to be manually activated is formed at the upper end of the motor 263 so that the motor 263 can be manually activated even when the motor 263 is not activated.
Therefore, when the rod moving member 255 is moved up and down by the motor 263 or the adjustment knob 259b, the measurement error of the displacement measuring instrument 207 is verified by comparing the measurement values obtained when the measurement rod 207a of the displacement measuring instrument 207 and the verification rod 257 of the displacement verifier 250 are simultaneously moved by the same displacement.
Here, the driving gear 256a and the driven gear 256 may be a jack screw gear (jack screw gear), a worm gear (work and work wheel gear), a pinion gear, a rack gear, and the like.
According to the embodiments of the present invention described above, even when the environment in which the measuring instrument is used is a place where radiation is present such as a nuclear power plant, errors in electronic components and the like inside the measuring instrument can be prevented, and accurate measurement can be performed.
Further, according to the embodiments of the present invention, it is possible to reduce measurement variation of displacement due to vibration and resonance in the press-in test, which is advantageous for evaluation of mechanical properties, and it is possible to apply the embodiments to test pieces in a wide range from small fields such as thin films and micro devices to large structures in the press-in test.
Further, according to the embodiment of the present invention, the measurement error of the indentation tester, the displacement measuring device, the thickness measuring device, and the like can be checked at any time in the field of use, and the accuracy and reliability of the measurement test can be improved.
In addition, according to the embodiment of the present invention, the volume and weight of the checker for checking the measurement error, such as the indentation tester, the displacement measurer, and the thickness measurer, are reduced, thereby facilitating the portability and improving the mobility.
Although it has been described above that all the structures constituting the embodiments of the present invention can be integrated or operated in a combined manner, the present invention is not necessarily limited to such embodiments. That is, all of the structures can be selectively coupled to each other by one or more than one and operated within the intended scope of the present invention.
In addition, when there is no particular description on the contrary, terms such as "include", "constitute" or "include" mean that the relevant constituent element can be carried therein, and it is understood that other configurations are not excluded, and other configurations can be further included. Unless otherwise defined, all terms including technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art. The terms used in the present invention are not intended to be interpreted as idealized or overly formal unless expressly so defined herein.
The above description is merely illustrative of the technical idea of the present invention, and thus, various modifications and variations can be made by those skilled in the art within the scope not departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical ideas of the present invention but to illustrate the present invention, and the scope of the technical ideas of the present invention is not intended to be limited by such embodiments. The scope of the present invention is to be interpreted by the following claims, and all technical ideas within the same scope as it are interpreted to be included in the scope of the claims of the present invention.
Claims (13)
1. A portable verification tester of a meter having a shield, comprising:
a gauge body having a press-in tester and a displacement measuring device, the thickness measuring device being detachably coupled to one side of an operation portion formed in an upper portion of the gauge body, and a shield for shielding transmission of radiation being coupled to an outer peripheral surface of the gauge body;
a rectangular case cover, the upper end of which supports and is combined with a connecting clamp formed at the lower end of the measuring instrument main body; and
a case main body having a load checker built therein and coupled to a lower end of the case cover, wherein the load checker measures a load applied when the press-in portion of the press-in tester presses in the test piece,
wherein the displacement measuring device comprises:
a guide member coupled to the press-in tester so as to measure a depth of the press-in portion pressed into the test piece;
a measuring rod which is slidably coupled to the guide member so as to penetrate therethrough, and an end portion of which is supported by a test piece;
a reference scale coupled to a measuring rod of the displacement measuring device and sliding together with the measuring rod; and
a sensor coupled to the indentation tester and sensing a displacement of the scale,
the load checker includes:
a load sensor capable of measuring a press-fitting load of the press-fitting portion;
a horizontal adjustment member coupled to a lower end of the load cell and moving a center of the load cell along a first axis and a second axis on a plane perpendicular to an axial direction of the press-fitting portion so as to move the center of the load cell to a center of the press-fitting portion,
the portable verification tester of the meter with shield further comprises:
a displacement checker which is built in the case main body and measures a displacement of the displacement measurer by the movement of the measuring rod,
the displacement checker includes:
a displacement verification sensing member which is arranged in the shell main body at a position separated from the displacement measurer and is provided with a displacement sensor capable of measuring the displacement of the verification rod; and
and a lever moving member having a lever supporting portion to which the measuring lever and the verifying lever are respectively supportably mounted at one side and the other side of the lever supporting portion and which is vertically movable, and a power driving portion having a driving gear connected to a driven gear formed at the lever supporting portion and which vertically moves the lever supporting portion by a driving force of a motor.
2. The portable verification tester of a meter with a shield according to claim 1,
the guide members are disposed on one side and the other side of the measuring rod, fixed to the press-in tester, and provided in a pair, and each guide member has a through hole on an inner side thereof through which the measuring rod slides, and an outer peripheral surface of the guide member is coupled to the press-in tester.
3. The portable verification tester of a meter with a shield according to claim 2,
the scale is coupled to the measuring rod between the guides, has a through hole for coupling the measuring rod inside the scale, and has a communication hole communicating with the through hole formed in one side surface of the scale, so that the scale is fixed to the measuring rod through a fixing member as a medium in the communication hole.
4. The portable verification tester of a meter with a shield according to claim 3,
an elastic member elastically supporting the scale and the measuring rod is coupled between the upper end of the scale and the guide.
5. The portable verification tester of a meter with a shield according to claim 4,
inner side grooves are formed on both side surfaces of the reference scale and inner side surfaces of the indentation tester facing the reference scale, so that the reference scale is slidably supported by a sliding support member coupled to the inner side grooves.
6. The portable verification tester of a meter with a shield according to claim 1,
the sensor for sensing the displacement of the scale is disposed at a position facing the jig with a space therebetween, and is coupled to the indentation tester by a pair of coupling support members that support both side surfaces of the indentation tester and both side surfaces of the sensor for sensing the displacement of the scale.
7. The portable verification tester of a meter with a shield according to claim 1,
the meter main body is formed in a cylindrical shape, the shield is in close contact with an outer peripheral surface of the meter main body, and a plurality of the shields are detachably coupled to the outer peripheral surface of the meter main body.
8. The portable verification tester of meters with shields of claim 7,
the shield includes:
a shielding plate formed of a radiation shielding material and closely attached to an outer peripheral surface of the meter main body, the shielding plate having a curved plate shape formed to be long in an axial direction;
and a shield cover having a coupling groove formed on an inner circumferential surface thereof, into which the shield plate is inserted, and a coupling hole formed therein, through which the shield cover is coupled to the meter body by a fastening member.
9. The portable verification tester of a meter with a shield according to claim 8,
the upper side of the housing cover is formed with a thickness checker at a position spaced apart from the coupling jig, the thickness checker having a stepped shape with a certain interval to raise the height.
10. The portable verification tester of a meter with a shield according to claim 1,
the load sensor includes:
a first sensing member coupled to an upper end portion of the leveling member;
and a second sensing member formed to protrude perpendicularly to the first sensing member from a center of the first sensing member, and having a support groove formed with a recessed spherical surface formed at an upper end portion thereof.
11. The portable verification tester of meters with shields of claim 10,
the press-in portion is coupled to the connection member and applies a press-in load to the second sensor member, and has a press-in hole into which the press-in portion is inserted at an upper end portion of the connection member, and a ball portion formed in a convex spherical surface and inserted into the support groove at a lower end portion of the connection member.
12. The portable verification tester of meters with shields of claim 1,
the displacement verification sensing component includes:
a sliding part, wherein the checking rod and the displacement sensor are combined with the sliding part and move up and down; and
a fixing portion having a second gear connected with a first gear formed at the sliding portion, and fixed to the housing main body.
13. The portable verification tester of meters with shields of claim 12,
and an adjustment handle which is connected to the fixed part in a penetrating manner and rotates the second gear to move the sliding part up and down.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2016-0060577 | 2016-05-18 | ||
| KR1020160060577A KR101727504B1 (en) | 2016-05-18 | 2016-05-18 | Apparatus for Portable Verifying Tester of Measuring Instrument having Radiation Shield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107401994A CN107401994A (en) | 2017-11-28 |
| CN107401994B true CN107401994B (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710352347.6A Active CN107401994B (en) | 2016-05-18 | 2017-05-18 | Portable calibration tester for a measuring device with a shielding |
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| Country | Link |
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| KR (1) | KR101727504B1 (en) |
| CN (1) | CN107401994B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387160A (en) * | 2018-11-26 | 2019-02-26 | 中国科学院光电技术研究所 | Object surface contour measuring device and method in nuclear radiation environment |
| KR102031197B1 (en) * | 2019-02-18 | 2019-11-08 | (주)프론틱스 | Instrumented Indentation Tester |
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| JPS5923297A (en) * | 1982-07-30 | 1984-02-06 | 株式会社日立製作所 | Method of reinforcing radiation resistance of equipment with electric circuit |
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| KR20110057475A (en) * | 2009-11-24 | 2011-06-01 | (주)프론틱스 | Apparatus for indentation test involving micom and evaluating method of residual stress using the same |
| CN102323170A (en) * | 2011-06-16 | 2012-01-18 | 中国地质大学（北京） | A kind of method of testing of ultrahard diamond thin film mechanical performance |
| CN104729911A (en) * | 2015-03-11 | 2015-06-24 | 吉林大学 | In-situ micro-nano indentation/scratch test platform and test method |
| CN105043809A (en) * | 2015-08-17 | 2015-11-11 | 南华大学 | Nuclear radiation environment automatic sampling mechanical vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7681432B2 (en) * | 2006-12-12 | 2010-03-23 | Agilent Technologies, Inc. | Calibrating force and displacement sensors of mechanical probes |
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2016
- 2016-05-18 KR KR1020160060577A patent/KR101727504B1/en active IP Right Grant
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5923297A (en) * | 1982-07-30 | 1984-02-06 | 株式会社日立製作所 | Method of reinforcing radiation resistance of equipment with electric circuit |
| JPH07245847A (en) * | 1994-03-01 | 1995-09-19 | Sanreizu Kogyo Kk | Box for radiation protection |
| KR20110057475A (en) * | 2009-11-24 | 2011-06-01 | (주)프론틱스 | Apparatus for indentation test involving micom and evaluating method of residual stress using the same |
| CN102323170A (en) * | 2011-06-16 | 2012-01-18 | 中国地质大学（北京） | A kind of method of testing of ultrahard diamond thin film mechanical performance |
| CN104729911A (en) * | 2015-03-11 | 2015-06-24 | 吉林大学 | In-situ micro-nano indentation/scratch test platform and test method |
| CN105043809A (en) * | 2015-08-17 | 2015-11-11 | 南华大学 | Nuclear radiation environment automatic sampling mechanical vehicle |
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| Publication number | Publication date |
|---|---|
| KR101727504B1 (en) | 2017-04-17 |
| CN107401994A (en) | 2017-11-28 |
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