CN110196005B - Calibration device and method for nuclear power radioactive vernier measuring tool - Google Patents
Calibration device and method for nuclear power radioactive vernier measuring tool Download PDFInfo
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- CN110196005B CN110196005B CN201910515800.XA CN201910515800A CN110196005B CN 110196005 B CN110196005 B CN 110196005B CN 201910515800 A CN201910515800 A CN 201910515800A CN 110196005 B CN110196005 B CN 110196005B
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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
- G01B21/04—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 by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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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
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/20—Slide gauges
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- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a calibration device and a method of a nuclear power measuring tool with a radioactive vernier, wherein the device comprises: the device comprises a lifting platform, an advancing and retreating platform, a measuring block group, a group of first elastic pieces and a group of second elastic pieces; the measuring block group is arranged on the lifting platform, and the first elastic pieces are positioned on the left side and the right side of the measuring block group and clamp the measuring block group together; the moving and reversing platform is positioned above the lifting platform, the vernier measuring tool is fixed on the moving and reversing platform, a first measuring jaw and a second measuring jaw of the vernier measuring tool are arranged side by side left and right, and the second elastic piece is connected with the first measuring jaw and can push the first measuring jaw to be close to the second measuring jaw so as to clamp the measuring block group from the left side and the right side for measurement; the gauge block group comprises a main gauge block and two matched gauge blocks, the two matched gauge blocks are respectively attached to the left measuring surface and the right measuring surface of the main gauge block, and the two matched gauge blocks are respectively contacted with the first gauge jaw and the second gauge jaw when the gauge block group is clamped by the first gauge jaw and the second gauge jaw.
Description
Technical Field
The invention relates to the field of nuclear power, in particular to a calibration device and a calibration method of a nuclear power measuring tool with a radioactive vernier.
Background
The existing calibration method of the vernier gauge is based on the standard device of a conventional laboratory and the operation of a calibrator, the main standard device for calibrating the vernier gauge is a gauge block, the prior art mainly depends on the calibrator to directly hold and operate the vernier gauge and the gauge block, and the reading is carried out under the condition that a measuring jaw working surface of the vernier gauge is in direct contact with a measuring surface of the gauge block. The existing calibration method and device are mainly designed according to the calibration requirements of JJG30-2012 'Universal Caliper calibration Specification' on various vernier, band meter or digital display calipers and depth calipers.
The vernier caliper calibration work in a conventional laboratory requires personnel to directly contact the caliper and the gauge block, and at the present stage, in the daily operation and maintenance work of a nuclear power plant, part of the vernier caliper needs to perform direct contact work on equipment with radioactivity, so that the caliper has radioactive residues and exceeds a specified limit value, and the caliper cannot be taken out of a radioactive factory building and can only be placed in the specified factory building for use and storage. Under the condition, the calibrator still performs the quantity value tracing to the caliper in the radioactive factory building according to the calibration method of the conventional laboratory, and the risk that the personnel and the calibrator are crossed to be contaminated by the residual radioactivity carried by the caliper exists, so that the calibrator can only be retained in the radioactive factory building due to the contamination radioactivity and cannot perform the periodic tracing, namely, a dead cycle of the quantity value tracing is entered, namely, the contaminated caliper performs the quantity value tracing to the contaminated caliper, and the contamination of a calibrator block is caused. If the problem cannot be solved, the number of the subsequent contaminated instruments is increased, and the quantity traceability cost is also greatly increased.
Therefore, the vernier caliper with radioactive contamination in the nuclear power plant at the present stage cannot be used for periodic quantity value tracing temporarily, the vernier caliper with radioactive contamination can only be stored in a centralized manner, and the vernier caliper can be brought into a conventional laboratory for quantity value tracing after radioactive substances naturally decay and reach the limit.
Disclosure of Invention
The present invention provides a calibration apparatus and method for nuclear power radioactive vernier gauge, aiming at the above-mentioned defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a nuclear power calibrating device with a radioactive vernier measuring tool is constructed, and comprises: the device comprises a lifting platform capable of lifting up and down, a forward and backward driving platform capable of advancing and retreating forwards and backwards, a measuring block group, a group of first elastic pieces and a group of second elastic pieces;
the measuring block group is arranged on the lifting platform, and the first elastic pieces are positioned on the left side and the right side of the measuring block group and clamp the measuring block group together;
the vernier measuring tool is fixed on the advancing and retreating platform, a first measuring jaw and a second measuring jaw of the vernier measuring tool are arranged side by side left and right, and the second elastic piece is connected with the first measuring jaw and can push the first measuring jaw to be close to the second measuring jaw so as to clamp the measuring block group from the left side and the right side for measurement;
the gauge block group comprises a main gauge block and two matched gauge blocks, the two matched gauge blocks are respectively attached to the left measuring surface and the right measuring surface of the main gauge block, and the two matched gauge blocks are respectively contacted with the first measuring jaw and the second measuring jaw when the gauge block group is clamped by the first measuring jaw and the second measuring jaw.
Preferably, one measuring surface of the matching measuring block is ground with the measuring surface of the main measuring block, and the other measuring surface of the matching measuring block can be in contact with the corresponding first measuring jaw or second measuring jaw, wherein the measuring surface of the matching measuring block is higher than the measuring surface of the main measuring block by a preset distance.
Preferably, the lifting platform comprises a bottom platform and a top platform, the bottom platform is connected with the lifting driving mechanism and can be driven by the lifting driving mechanism to lift up and down, and the bottom platform and the top platform are connected through a ball;
when the first measuring jaw and the second measuring jaw clamp the measuring block group from the left side and the right side, the top platform can swing in multiple dimensions to adjust the position of the measuring block group, so that the measuring surfaces of the two matched measuring jaws are respectively in close contact with the measuring surfaces of the corresponding first measuring jaw and the second measuring jaw, and the distance between the first measuring jaw and the second measuring jaw is the minimum.
Preferably, the device includes the base, lift actuating mechanism sets up elevating screw and lift slide rail side by side about including, the equal vertical setting of elevating screw and elevating screw is located the left and right sides of bottom platform, and respectively through the connecting piece with the left and right sides of bottom platform is connected fixedly, the elevating screw tip sets up an elevating screw hand wheel, the elevating screw hand wheel can drive elevating screw drives the bottom platform is along lift slide rail oscilaltion.
Preferably, the two mating gauge blocks and the main gauge block are fastened together by a clamp.
Preferably, a left baffle and a right baffle are fixed on the top platform, and the group of first elastic pieces are respectively connected between the clamp and the left baffle and the right baffle.
Preferably, the advancing and retreating platform is connected with the advancing and retreating driving mechanism and can advance and retreat forwards and backwards under the driving of the advancing and retreating driving mechanism;
the device comprises a base, support columns are arranged on the base in parallel from left to right, the advance and retreat driving mechanism comprises an advance and retreat screw rod and an advance and retreat slide rail which are arranged from left to right in parallel, the advance and retreat screw rod and the advance and retreat slide rail are respectively arranged from left to right in parallel, the support columns are supported and fixed, the advance and retreat screw rod and the advance and retreat slide rail are horizontally arranged and located on the left and right sides of the advance and retreat platform and are respectively connected and fixed with the left and right sides of the advance and retreat platform through connecting pieces, an advance and retreat screw rod hand wheel is arranged at the end part of the advance and retreat screw rod, and the advance and.
Preferably, a baffle is arranged on the advancing and retreating platform, and the second elastic piece is connected between the first measuring jaw and the baffle.
Preferably, the left end and the right end of the vernier measuring tool are respectively locked and fixed through a cover plate and a nut.
On the other hand, the invention also constructs a calibration method of the nuclear power radioactive vernier measuring tool, which is realized based on the device of any one of the preceding claims, and the method comprises the following steps:
after the first measuring jaw is pulled open, the measuring block group is adjusted to a proper position through the up-and-down lifting of the lifting platform, and the vernier measuring tool is adjusted to a proper position through the forward and backward advancing and retreating of the advancing and retreating platform, so that the first measuring jaw and the second measuring jaw are positioned on the left side and the right side of the measuring block group;
loosening the first measuring jaw, pushing the first measuring jaw to be close to the second measuring jaw by the second elastic piece, and clamping the measuring block group from the left side and the right side for measurement;
and comparing the reading with the nominal length of the measuring block group to obtain the indication error of the vernier measuring tool.
The calibration device and method for the nuclear power radioactive vernier measuring tool have the following beneficial effects: under the condition that a calibrator basically does not need to directly contact a measuring jaw with radioactivity, the aim of calibrating a measuring tool can be still fulfilled, and the risk of contamination of personnel is greatly reduced; and because two measuring surfaces of the main gauge block are covered by two matched gauge blocks, when the first gauge claw and the second gauge claw are clamped, the two matched gauge blocks are respectively contacted with the first gauge claw and the second gauge claw, so that the risk of cross contamination of the main gauge block by radioactive residues carried by the gauge claws cannot exist, the purchase cost of the matched gauge blocks is low, the replacement is easy, and if the matched gauge blocks are contaminated, additional matched gauge blocks can be purchased for replacement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
FIG. 1 is a schematic structural diagram of a nuclear calibration device with a radioactive vernier gauge according to the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Exemplary embodiments of the invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the embodiments and specific features in the embodiments of the present invention are described in detail in the present application, but not limited to the present application, and the features in the embodiments and specific features in the embodiments of the present invention may be combined with each other without conflict.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The terms including ordinal numbers such as "first", "second", and the like used in the present specification may be used to describe various components, but the components are not limited by the terms. These terms are used only for the purpose of distinguishing one constituent element from other constituent elements. For example, a first component may be named a second component, and similarly, a second component may also be named a first component, without departing from the scope of the present invention.
Referring to fig. 1, the nuclear power calibrating device of the invention has a radioactive vernier measuring tool, and the whole device is made of stainless steel. Specifically, the device includes: the device comprises a base 1, a lifting driving mechanism, a lifting platform capable of lifting up and down under the driving of the lifting driving mechanism, a forward and backward driving platform 4 capable of advancing and retreating forward and backward under the driving of the forward and backward driving mechanism, a measuring block group, a group of first elastic pieces 15 and a group of second elastic pieces 23.
The gauge block group is arranged on the lifting platform, and the first elastic pieces 15 are positioned on the left side and the right side of the gauge block group and clamp the gauge block group together. The advancing and retreating platform 4 is positioned above the lifting platform, the vernier gauge is fixed on the advancing and retreating platform 4, the first measuring jaw 22a and the second measuring jaw 22b of the vernier gauge are arranged side by side left and right, and the second elastic piece 23 is connected with the first measuring jaw 22a and can push the first measuring jaw 22a to be close to the second measuring jaw 22 b. Since the first elastic members 15 are located on the left and right sides of the gauge block group and clamp the gauge block group together, that is, the whole gauge block group can move left and right, when measuring, only the first gauge 22a and the second gauge 22b are adjusted to the left and right sides of the gauge block group, and then the first gauge 22a is released, the first gauge 22a drives the whole gauge block group to move towards the second gauge 22b in the process of approaching the second gauge 22b, and finally the effect that the first gauge 22a and the second gauge 22b clamp the gauge block group from the left and right sides for measurement is achieved.
In this embodiment, the left and right ends of the vernier measuring tool are respectively locked by the fixing devices 25 and 26, so as to ensure that the measuring tool keeps a relatively static state in the calibration process. For example, the securing means may be a structure of a cap plate engaging a nut.
A baffle plate 24 is arranged on the forward and backward platform 4 close to the right side, and the second elastic piece 23 is connected between the first measuring jaw 22a and the baffle plate 24.
The gauge block group comprises a main gauge block 18 and two matched gauge blocks 17, the two matched gauge blocks 17 are respectively attached to the left measuring surface and the right measuring surface of the main gauge block 18, and the two matched gauge blocks 17 are respectively contacted with the first measuring jaw 22a and the second measuring jaw 22b when the gauge block group is clamped by the first measuring jaw 22a and the second measuring jaw 22 b.
Specifically, the method comprises the following steps: the distance len between the two measuring surfaces of the main measuring block 18 is determined by the calibration point of the calibrated measuring tool, while the nominal length of the associated measuring block 17 is 1mm, i.e. the nominal length of the entire measuring block set is len +1 mm. One measuring surface of the matching measuring block 17 is ground with the measuring surface of the main measuring block 18, and the other measuring surface of the matching measuring block 17 can be in contact with the corresponding first measuring jaw 22a or second measuring jaw 22b, wherein the measuring surface of the matching measuring block 17 is higher than the measuring surface of the main measuring block 18 by a preset distance, for example, by about 5mm, so that the measuring jaws can contact the matching measuring block 17 and measure the length of the measuring block group in the calibration process.
In addition, in order to ensure the tight fit between the main gauge block 18 and the two matching gauge blocks 17, the two matching gauge blocks 17 and the main gauge block 18 are fastened together by the clamp 16 in this embodiment.
The lifting platform comprises a bottom platform 2 and a top platform 3, the bottom platform 2 is connected with a lifting driving mechanism and can be driven by the lifting driving mechanism to lift up and down, the bottom platform 2 is connected with the top platform 3 through a ball 13, so that when the measuring block group is clamped by the first measuring jaw 22a and the second measuring jaw 22b from the left side and the right side, due to the clamping effect of the first measuring jaw 22a and the second measuring jaw 22b, the top platform 3 can automatically swing in multiple dimensions to automatically adjust the position of the measuring block group to finally reach a balance state, and in the balance state, the measuring surfaces of the two matched measuring blocks 17 are respectively in close contact with the measuring surfaces of the corresponding first measuring jaw 22a and the second measuring jaw 22b, and the distance between the first measuring jaw 22a and the second measuring jaw 22b is the minimum.
Specifically, the center of the upper surface of the bottom platform 2 has an arc-shaped pit matched with the sphere 13, the center of the upper surface of the top platform 3 has an arc-shaped pit matched with the sphere 13, the sphere 13 is located between the arc-shaped pit of the bottom platform 2 and the arc-shaped pit of the top platform 3, and the depths of the two arc-shaped pits enable the distance between the bottom platform 2 and the top platform 3 to be about 1/3 of the radius of the sphere 13, so that the top platform 3 can realize multi-dimensional swing within a certain range.
Specifically, a left baffle plate and a right baffle plate 14 are fixed on the top platform 3 close to the left side and the right side, and the group of first elastic pieces 15 are respectively connected between the clamp 16 and the left baffle plate and the right baffle plate 14.
Wherein, lift actuating mechanism sets up elevating screw 6 and lift slide rail 7 side by side including controlling, lift slide rail 7 and the equal vertical setting of elevating screw 6 are located the left and right sides of bottom platform 2, and respectively through connecting piece 11, 12 with the left and right sides of bottom platform 2 is connected fixedly, 6 tip of elevating screw sets up an elevating screw hand wheel 28, elevating screw hand wheel 28 can drive elevating screw 6 drives bottom platform 2 is along the oscilaltion of elevating slide rail 7.
The base 1 is provided with support columns 10 and 9 on the left and right side by side, the advance and retreat driving mechanism comprises an advance and retreat screw 5 and an advance and retreat slide rail 8 which are arranged on the left and right side by side, the advance and retreat screw 5 and the advance and retreat slide rail 8 are respectively supported and fixed by the support columns 10 and 9 arranged on the left and right side by side, the advance and retreat screw 5 and the advance and retreat slide rail 8 are horizontally arranged and positioned on the left and right sides of the advance and retreat platform 4 and are respectively connected and fixed with the left and right sides of the advance and retreat platform 4 through connecting pieces 19 and 20, an advance and retreat screw hand wheel 27 is arranged at the end part of the advance and retreat screw 5, and the advance and retreat screw wheel 27 can drive.
The working principle of the embodiment is as follows:
1) the calibrator fixes the vernier measuring tool on the advance and retreat platform 4 and fixes the gauge block group on the lifting platform;
2) the screw is controlled by manually rotating a lifting screw hand wheel 28 and a forward and backward screw hand wheel 27, so that the positions of the forward and backward platform 4 and the lifting platform are adjusted, in the adjustment process, initial adjustment and fine adjustment are generally carried out, a first measuring jaw 22a needs to be pulled open in the fine adjustment stage, and the first measuring jaw 22a and a second measuring jaw 22b are positioned on the left side and the right side of the measuring block group after the fine adjustment is finished;
3) and when the first measuring jaw 22a is released, the second elastic element 23 pushes the first measuring jaw 22a to approach the second measuring jaw 22b, and the first measuring jaw 22a drives the whole measuring block group to move towards the second measuring jaw 22b in the process of approaching the second measuring jaw 22b, so that the effect that the first measuring jaw 22a and the second measuring jaw 22b clamp the measuring block group from the left side and the right side for measurement is finally achieved. When the first measuring jaw 22a and the second measuring jaw 22b clamp the measuring block group from the left side and the right side, due to the clamping action of the first measuring jaw 22a and the second measuring jaw 22b, the top platform 3 can automatically perform multi-dimensional swing to automatically adjust the position of the measuring block group to finally reach a balanced state, and in the balanced state, the measuring surfaces of the two matching measuring jaws 17 are respectively in close contact with the measuring surfaces of the corresponding first measuring jaw 22a and the second measuring jaw 22b, and the distance between the first measuring jaw 22a and the second measuring jaw 22b is the minimum.
4) And reading the gauge, and comparing the reading with the nominal length of the gauge block group to obtain the indication error of the vernier gauge, namely tracing the magnitude of the vernier gauge.
It can be seen that when the device based on this embodiment is calibrated, direct contact between personnel and the measuring tool can be reduced, the risk that the personnel stain radioactive residues is reduced, and meanwhile, the main gauge block 18 and the measuring tool are isolated through the matched gauge block 17, so that the purpose of magnitude tracing can be achieved, and the main gauge block 18 can be prevented from being cross-polluted.
It should be noted that the specific structures of the elevation driving mechanism and the advance and retreat driving mechanism in the present invention are only examples, and the elevation driving mechanism and the advance and retreat driving mechanism do not affect the calibration effect of the present invention as long as they can drive the elevation platform to elevate up and down and drive the advance and retreat platform 4 to advance and retreat back and forth, and are within the protection scope of the present invention.
Based on the same inventive concept, the invention also discloses a calibration method of the nuclear power radioactive vernier measuring tool, which is realized based on the device shown in fig. 1, and the method comprises the following steps:
s101, after the first measuring jaw 22a is pulled out, the measuring block group is adjusted to a proper position through the up-down lifting of the lifting platform, and the vernier measuring tool is adjusted to a proper position through the forward-backward advancing and retreating of the advancing and retreating platform 4, so that the first measuring jaw 22a and the second measuring jaw 22b are located on the left side and the right side of the measuring block group;
s102, loosening the first measuring jaw 22a, pushing the first measuring jaw 22a to be close to the second measuring jaw 22b by the second elastic piece 23, and clamping the measuring block group from the left side and the right side for measurement;
s103, comparing the reading with the nominal length of the measuring block group to obtain the indication error of the vernier measuring tool.
For more details, reference may be made to the above-described embodiments of the apparatus, which are not described in detail herein.
In summary, the calibration device and method for nuclear power radioactive vernier measuring tool of the present invention have the following beneficial effects: under the condition that a calibrator basically does not need to directly contact a measuring jaw with radioactivity, the aim of calibrating a measuring tool can be still fulfilled, and the risk of contamination of personnel is greatly reduced; and because two measuring surfaces of the main gauge block are covered by two matched gauge blocks, when the first gauge claw and the second gauge claw are clamped, the two matched gauge blocks are respectively contacted with the first gauge claw and the second gauge claw, so that the risk of cross contamination of the main gauge block by radioactive residues carried by the gauge claws cannot exist, the purchase cost of the matched gauge blocks is low, the replacement is easy, and if the matched gauge blocks are contaminated, additional matched gauge blocks can be purchased for replacement.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A nuclear power has calibrating device of radioactive vernier measuring tool which characterized in that includes: the device comprises a lifting platform capable of lifting up and down, a forward and backward driving platform capable of advancing and retreating forwards and backwards, a measuring block group, a group of first elastic pieces and a group of second elastic pieces;
the measuring block group is arranged on the lifting platform, and the first elastic pieces are positioned on the left side and the right side of the measuring block group and clamp the measuring block group together;
the vernier measuring tool is fixed on the advancing and retreating platform, a first measuring jaw and a second measuring jaw of the vernier measuring tool are arranged side by side left and right, and the second elastic piece is connected with the first measuring jaw and can push the first measuring jaw to be close to the second measuring jaw so as to clamp the measuring block group from the left side and the right side for measurement;
the measuring block group comprises a main measuring block and two matched measuring blocks, the two matched measuring blocks are respectively attached to the left measuring surface and the right measuring surface of the main measuring block, and the two matched measuring blocks are respectively contacted with the first measuring jaw and the second measuring jaw when the measuring block group is clamped by the first measuring jaw and the second measuring jaw;
the lifting platform comprises a bottom platform and a top platform, the bottom platform is connected with the lifting driving mechanism and can be driven by the lifting driving mechanism to lift up and down, and the bottom platform and the top platform are connected through a ball; when the first measuring jaw and the second measuring jaw clamp the measuring block group from the left side and the right side, the top platform can swing in multiple dimensions to adjust the position of the measuring block group, so that the measuring surfaces of the two matched measuring jaws are respectively in close contact with the measuring surfaces of the corresponding first measuring jaw and the second measuring jaw, and the distance between the first measuring jaw and the second measuring jaw is the minimum.
2. The calibration device according to claim 1, wherein one measuring surface of the mating gauge block is coupled to a measuring surface of the main gauge block, and the other measuring surface of the mating gauge block is contactable with the corresponding first or second measuring jaw, wherein the measuring surface of the mating gauge block is higher than the measuring surface of the main gauge block by a predetermined distance.
3. The calibrating device according to claim 1, wherein the device comprises a base, the lifting driving mechanism comprises a lifting screw rod and a lifting slide rail which are arranged side by side from left to right, the lifting slide rail and the lifting screw rod are vertically arranged and located on the left side and the right side of the bottom platform and are respectively fixedly connected with the left side and the right side of the bottom platform through connecting pieces, a lifting screw rod hand wheel is arranged at the end part of the lifting screw rod, and the lifting screw rod hand wheel can drive the lifting screw rod to drive the bottom platform to lift up and down along the lifting slide rail.
4. The calibration device of claim 1, wherein the two mating gauge blocks are secured to the main gauge block by a clamp.
5. The alignment device of claim 4 wherein the top platform has left and right stops secured thereto, and the set of first springs are connected between the clamp and the left and right stops, respectively.
6. The calibration device according to claim 1, wherein the advancing and retreating platform is connected to an advancing and retreating driving mechanism and can advance and retreat back and forth under the driving of the advancing and retreating driving mechanism;
the device comprises a base, support columns are arranged on the base in parallel from left to right, the advance and retreat driving mechanism comprises an advance and retreat screw rod and an advance and retreat slide rail which are arranged from left to right in parallel, the advance and retreat screw rod and the advance and retreat slide rail are respectively arranged from left to right in parallel, the support columns are supported and fixed, the advance and retreat screw rod and the advance and retreat slide rail are horizontally arranged and located on the left and right sides of the advance and retreat platform and are respectively connected and fixed with the left and right sides of the advance and retreat platform through connecting pieces, an advance and retreat screw rod hand wheel is arranged at the end part of the advance and retreat screw rod, and the advance and.
7. The calibration device according to claim 1, wherein a stop is disposed on the advancing and retreating platform, and the second resilient member is connected between the first measuring jaw and the stop.
8. The calibration device according to claim 1, wherein the left and right ends of the vernier gauge are respectively locked and fixed by a cover plate and a nut.
9. A method for calibrating a nuclear power radioactive vernier gauge, which is implemented based on the calibration device of any one of claims 1 to 8, and comprises the following steps:
after the first measuring jaw is pulled open, the measuring block group is adjusted to a proper position through the up-and-down lifting of the lifting platform, and the vernier measuring tool is adjusted to a proper position through the forward and backward advancing and retreating of the advancing and retreating platform, so that the first measuring jaw and the second measuring jaw are positioned on the left side and the right side of the measuring block group;
loosening the first measuring jaw, pushing the first measuring jaw to be close to the second measuring jaw by the second elastic piece, and clamping the measuring block group from the left side and the right side for measurement;
and comparing the reading with the nominal length of the measuring block group to obtain the indication error of the vernier measuring tool.
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| CN208155225U (en) * | 2018-05-10 | 2018-11-27 | 重庆益民机械工程有限公司 | A kind of cylinder inside diameter detection device |
| CN108663637A (en) * | 2018-06-21 | 2018-10-16 | 苏州佳祺仕软件技术有限公司 | A kind of efficient flux measuring device |
| CN208390699U (en) * | 2018-06-22 | 2019-01-18 | 合肥明辉汽车零部件制造有限公司 | A kind of axle housing plane correction device easy to use |
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2019
- 2019-06-14 CN CN201910515800.XA patent/CN110196005B/en active Active
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