CN212432059U - Small-size diameter high-precision measuring device - Google Patents
Small-size diameter high-precision measuring device Download PDFInfo
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- CN212432059U CN212432059U CN202021536903.9U CN202021536903U CN212432059U CN 212432059 U CN212432059 U CN 212432059U CN 202021536903 U CN202021536903 U CN 202021536903U CN 212432059 U CN212432059 U CN 212432059U
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Abstract
The utility model relates to a measurement technical field of small-size diameter specifically is small-size diameter high accuracy measuring device for solve among the prior art to the small-size measurand, like the diameter measurement of fuel rod, there is the great problem of measuring error. The utility model discloses a base, backup pad, lower sliding seat, last sliding seat and lower slide mechanism, install the last slide mechanism that passes last sliding seat on the lower sliding seat, two clamping jaws that are parallel to each other are installed through rotary mechanism to the top surface of last sliding seat, two install clamping spring between the clamping jaw, the chuck is installed to the front end of clamping jaw, and the detection sensor is installed to the rear end. The utility model discloses a self-adaptation when lower slide mechanism, last slide mechanism and rotary mechanism satisfy clamping jaw centre gripping fuel rod guarantees that the clamping jaw is firm with the laminating of fuel rod centre gripping, along with opening and drawing in of clamping jaw remove the detection fuel rod diameter through detecting the sensor to improvement that can be very big is to the measurement accuracy of fuel rod diameter.
Description
Technical Field
The utility model relates to a measurement technical field of small-size diameter, more specifically relate to small-size diameter high accuracy measuring device.
Background
The high-precision measurement requirement is required to be guaranteed for small-size diameter measurement aiming at special environments such as fuel assembly underwater environments. However, the measuring devices in the prior art cannot meet the requirement of special environment measurement of up to 0.01mm, and national core technology products such as fuel assemblies cannot be effectively evaluated to determine whether the products are safe and reliable, so that the safe operation of the nuclear power station is greatly influenced.
In summary, the prior art has a problem of large measurement error in the measurement of the diameter of a small-sized object to be measured, such as a fuel rod. Therefore, there is an urgent need for a measuring device that can greatly improve the accuracy of measuring the diameter of a small-sized object to be measured.
SUMMERY OF THE UTILITY MODEL
Based on above problem, the utility model aims to provide a small-size diameter high accuracy measurement device for solve among the prior art to the small-size measurand, like the diameter measurement of fuel rod, there is the great problem of measuring error. The utility model discloses a self-adaptation when lower slide mechanism, last slide mechanism and rotary mechanism satisfy clamping jaw centre gripping fuel rod guarantees that the clamping jaw is firm with the laminating of fuel rod centre gripping, along with opening and drawing in of clamping jaw remove the detection fuel rod diameter through detecting the sensor to improvement that can be very big is to the measurement accuracy of fuel rod diameter.
The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
small-size diameter high accuracy measuring device, the on-line screen storage device comprises a base, two backup pads are installed along its width direction to the top surface of base, the top surface of base is installed and can be followed its length direction slip and be located the lower sliding seat between two backup pads, two install the lower sliding mechanism who passes the lower sliding seat between the backup pad, the gliding last sliding seat of width direction that can follow the base is installed to the top surface of lower sliding seat, install the last sliding mechanism who passes the last sliding seat on the lower sliding seat, two clamping jaws that are parallel to each other are installed through rotary mechanism to the top surface of last sliding seat, two install clamping spring between the clamping jaw, the chuck is installed to the front end of clamping jaw, and detection sensor is installed to the rear end.
Wherein, the preferred structure of lower slide mechanism is as follows: the lower sliding mechanism comprises a plurality of lower optical axes which are arranged between the two supporting plates and penetrate through the lower sliding seat, and the lower optical axes are connected with the lower sliding seat through lower linear bearings.
The number of the lower optical axes is two, the two lower optical axes are parallel to each other, and two lower linear bearings are installed on each lower optical axis.
Still install between backup pad and the lower sliding seat with optical axis parallel down and be located two lower guide shafts between the optical axis, the lower sliding seat can slide along lower guide shaft, install down buffer spring between lower sliding seat and the backup pad.
The preferable structure of the upper slide mechanism is as follows: lower sliding seat includes mutually shaping pedestal and two seat arms as an organic whole, two the seat arm is located the both sides of pedestal top surface, go up slide mechanism including installing two just pass a plurality of optical axes of going up of sliding seat between the seat arm, go up the optical axis and go up and be connected through last linear bearing between the sliding seat.
The number of the upper optical shafts is two, the upper optical shafts are parallel to each other, two upper linear bearings are installed on each upper optical shaft, and an upper buffer spring is installed between each upper optical shaft and the seat arm.
The preferred structure of the rotary mechanism is as follows: the rotating mechanism comprises a connecting plate arranged on the top surface of the upper sliding seat, a connector is arranged between the connecting plate and the clamping jaw, a rolling bearing is further arranged in the clamping jaw through a rotating shaft, and the clamping jaw can rotate around the rotating shaft.
The clamping jaw is internally provided with an upper mounting hole and a lower mounting hole which are coaxial and mutually communicated, the diameter of the lower mounting hole is larger than that of the upper mounting hole, the connector is mounted in the lower mounting hole, and the rolling bearing is mounted in the upper mounting hole.
The utility model has the advantages as follows:
(1) the utility model discloses a self-adaptation when lower slide mechanism, last slide mechanism and rotary mechanism satisfy clamping jaw centre gripping fuel rod guarantees that the clamping jaw is firm with the laminating of fuel rod centre gripping, along with opening and drawing in of clamping jaw remove the detection fuel rod diameter through detecting the sensor to improvement that can be very big is to the measurement accuracy of fuel rod diameter.
(2) The utility model discloses in install down buffer spring between sliding seat and the backup pad, lower buffer spring can reduce and put in place the rigidity collision who examines time measuring by the propelling movement of push mechanism.
Drawings
FIG. 1 is a schematic view of the three-dimensional structure of the present invention;
FIG. 2 is a schematic view of the three-dimensional structure of the lower sliding mechanism of the present invention mounted on the base;
fig. 3 is a schematic view of the three-dimensional structure of the upper sliding mechanism and the lower sliding mechanism of the present invention mounted on the base;
FIG. 4 is a schematic view of the three-dimensional structure of the present invention with the clamping jaws removed;
FIG. 5 is a schematic view of the lower slide seat of the present invention;
fig. 6 is a schematic view of the three-dimensional structure of the clamping jaw of the utility model;
FIG. 7 is a schematic view of the three-dimensional structure of the present invention in which the rotating shaft and the rolling bearing are mounted together;
reference numerals: the automatic clamp comprises a base 1, a support plate 2, a chuck 3, a clamping jaw 4, a lower mounting hole 41, an upper mounting hole 42, a clamping spring 5, a rotating mechanism 6, a connector 61, a rolling bearing 62, a rotating shaft 63, a lower sliding seat 7, a seat body 71, a seat arm 72, a detection sensor 8, a lower sliding mechanism 9, a lower optical axis 91, a lower linear bearing 92, a guide shaft 93, a lower buffer spring 94, an upper sliding seat 10, a connecting plate 11, an upper sliding mechanism 12, an upper buffer spring 121, an upper linear bearing 122 and an upper optical axis 123.
Detailed Description
For a better understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the following embodiments.
Example 1:
as shown in fig. 1, the small-size diameter high-precision measuring device includes a base 1, two supporting plates 2 are installed on the top surface of the base 1 along the width direction thereof, a lower sliding seat 7 capable of sliding along the length direction thereof and located between the two supporting plates 2 is installed on the top surface of the base 1, a lower sliding mechanism 9 penetrating through the lower sliding seat 7 is installed between the two supporting plates 2, an upper sliding seat 10 capable of sliding along the width direction of the base 1 is installed on the top surface of the lower sliding seat 7, an upper sliding mechanism 12 penetrating through the upper sliding seat 10 is installed on the lower sliding seat 7, two parallel clamping jaws 4 are installed on the top surface of the upper sliding seat 10 through a rotating mechanism 6, a clamping spring 5 is installed between the two clamping jaws 4, a clamping head 3 is installed at the front end of the clamping jaw 4, and a detection. Wherein, the type of the detection sensor 8 can be selected from HSAR 750-125-086.
The working principle is as follows: when the diameter of a fuel rod is detected, the movement of the moving platform is controlled through movement control software, wherein the movement control software is a Siemens S120 series PLC movement control system, a PLC controls a proportional servo valve, the rotating speed of a pneumatic motor of the movement platform is adjusted, the pneumatic motor drives the moving platform to move, a chuck 3 is inserted into the fuel rod, a clamping jaw 4 drives a detection sensor 8 to move, the detection sensor 8 transmits signals to a signal conditioner through a cable, the signals are processed into standard current signals through the signal conditioner and transmitted to an industrial personal computer for collection and processing, more than 30 m of anti-irradiation cable is equipped, and the operating time of more than 200 hours is guaranteed to be fault-free.
When the clamping jaw 4 inserts the fuel rod, the clamping jaw adopts the face contact mode centre gripping fuel rod, lower slide mechanism 9 can drive clamping jaw 4 and remove along base 1's length direction, it can drive clamping jaw 4 and remove along base 1's width direction to go up slide mechanism 12, rotary mechanism 6 can drive clamping jaw 4 and rotate at the horizontal direction, in a word can be through lower slide mechanism 9, it satisfies the self-adaptation when clamping jaw 4 centre gripping fuel rod to go up slide mechanism 12 and rotary mechanism 6, it is firm to guarantee clamping jaw 4 and fuel rod centre gripping laminating, move along with opening and drawing in of clamping jaw 4 through detecting sensor 8 and detect the fuel rod diameter, thereby the improvement that can be very big is to the measurement accuracy of fuel rod diameter, can reach 0.01 mm's precision, possess the high measurement accuracy index of trade.
Example 2:
as shown in fig. 2, this embodiment provides a preferable structure of the lower sliding mechanism based on embodiment 1, that is, the lower sliding mechanism 9 includes a plurality of lower optical axes 91 installed between two supporting plates 2 and passing through the lower sliding seat 7, the lower optical axes 91 are connected to the lower sliding seat 7 through lower linear bearings 92, the number of the lower optical axes 91 is two, the two lower optical axes 91 are parallel to each other, and two lower linear bearings 92 are installed on each lower optical axis 91. When the clamping jaw 4 clamps the fuel rod and automatically adapts to the length direction of the base 1 according to actual needs, the lower linear bearing 92 receives force along the length direction of the base 1 and then drives the lower sliding seat 7 to slide along the lower optical axis 91, and finally the self-adaptation of the clamping jaw 4 along the length direction of the base 1 is realized.
A lower guide shaft 93 parallel to the lower optical axis 91 and located between the two lower optical axes 91 is further installed between the support plate 2 and the lower sliding seat 7, the lower sliding seat 7 can slide along the lower guide shaft 93, and a lower buffer spring 94 is installed between the lower sliding seat 7 and the support plate 2. The lower buffer spring 94 can reduce rigid collision when the fuel rod is pushed in place by the pushing mechanism, and after the clamping jaw 4 does not clamp the fuel rod, the lower sliding seat 7 is restored to the original state under the action of the lower buffer spring 94.
Example 3:
as shown in fig. 3 and 5, the present embodiment provides a preferable structure of the upper sliding mechanism on the basis of the above embodiment 1, that is, the lower sliding seat 7 includes a seat body 71 and two seat arms 72, which are integrally formed with each other, the two seat arms 72 are located at two sides of the top surface of the seat body 71, the upper sliding mechanism 12 includes a plurality of upper optical axes 123 installed between the two seat arms 72 and passing through the upper sliding seat 10, and the upper optical axes 123 are connected with the upper sliding seat 10 through upper linear bearings 122. When the clamping jaw 4 clamps the fuel rod and automatically adapts to the width direction of the base 1 according to actual needs, the upper linear bearing 122 receives force along the width direction of the base 1 and then drives the upper sliding seat 10 to slide along the upper polishing shaft 123, and finally the self-adaptation of the clamping jaw 4 along the width direction of the base 1 is realized.
The number of the upper optical axes 123 is two, the two upper optical axes 123 are parallel to each other, two upper linear bearings 122 are mounted on each upper optical axis 123, and an upper buffer spring 121 is mounted between each upper optical axis 123 and the seat arm 72. The upper buffer spring 121 can reduce rigid collision when the fuel rod is pushed in place by the pushing mechanism, and after the clamping jaw 4 does not clamp the fuel rod, the upper sliding seat 10 is restored to the original state under the action of the upper buffer spring 121.
Implementation 4:
as shown in fig. 4, 6 and 7, on the basis of the above embodiment 1, this embodiment provides a preferable structure of the upper sliding mechanism, that is, the rotating mechanism 6 includes a connecting plate 11 mounted on the top surface of the upper sliding seat 10, a connecting head 61 is mounted on the connecting plate 11 and between the clamping jaws 4, a rolling bearing 62 is further mounted in the clamping jaws 4 through a rotating shaft 63, and the clamping jaws 4 can rotate around the rotating shaft 63; an upper mounting hole 42 and a lower mounting hole 41 which are coaxial and communicated with each other are formed in the clamping jaw 4, the diameter of the lower mounting hole 41 is larger than that of the upper mounting hole 42, the connecting head 61 is mounted in the lower mounting hole 41, and the rolling bearing 62 is mounted in the upper mounting hole 42. When the clamping jaw 4 clamps the fuel rod and rotates in the horizontal direction according to actual needs for automatic adaptation, after the clamping jaw 4 receives a rotating force, the clamping jaw 4 can rotate around the rotating shaft 63 through the rolling bearing 62, and finally, the self-adaptation of the clamping jaw 4 rotating in the horizontal direction is realized.
The upper sliding seat 7 and the lower sliding seat 10 are made of stainless steel materials, the lower buffer spring 94 and the upper buffer spring 121 are made of stainless steel springs, the clamping jaw 4 is made of 304 stainless steel and is quenched to ensure the rigidity of the clamping jaw, the clamping jaw 4 is designed to complete detection under the condition that the gap between the rods is 2mm, and the chuck 3 is quenched by 440C stainless steel to ensure the rigidity of the clamping jaw. The rest parts are made of aluminum alloy or stainless steel materials, the stainless steel material is 0Cr18Ni9, the corrosion resistance, the ageing resistance and the radiation capability under the boric acid and radiation environment are met, and the service performance in 200 hours in the working environment is good.
The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Small-size diameter high accuracy measuring device, its characterized in that: including base (1), two backup pads (2) are installed along its width direction to the top surface of base (1), the top surface of base (1) is installed and can be followed its length direction and slide and be located lower sliding seat (7) between two backup pads (2), two install lower slide mechanism (9) that pass lower sliding seat (7) between backup pad (2), the top surface of lower sliding seat (7) is installed and to be followed the gliding last sliding seat (10) of width direction of base (1), install last slide mechanism (12) that pass last sliding seat (10) on lower sliding seat (7), two clamping jaw (4) that are parallel to each other are installed through rotary mechanism (6) to the top surface of going up sliding seat (10), two install clamping spring (5) between clamping jaw (4), chuck (3) are installed to the front end of clamping jaw (4), the rear end is provided with a detection sensor (8).
2. The small-diameter high-precision measuring device according to claim 1, characterized in that: lower slide mechanism (9) are including installing a plurality of optical axis (91) down between two backup pad (2) and passing lower sliding seat (7), optical axis (91) are connected through linear bearing (92) down with between lower sliding seat (7).
3. The small-diameter high-precision measuring device according to claim 2, characterized in that: the number of the lower optical axes (91) is two, the two lower optical axes (91) are parallel to each other, and two lower linear bearings (92) are mounted on each lower optical axis (91).
4. The small-diameter high-precision measuring device according to claim 2, characterized in that: still install between backup pad (2) and lower sliding seat (7) and be located two lower guiding axle (93) between optical axis (91) with lower optical axis (91) parallel, lower sliding seat (7) can be followed down guiding axle (93) and slided, install down buffer spring (94) between lower sliding seat (7) and backup pad (2).
5. The small-diameter high-precision measuring device according to claim 1, characterized in that: lower sliding seat (7) are including seat (71) and two seat arms (72) of mutual shaping as an organic whole, two seat arm (72) are located the both sides of seat (71) top surface, it installs including two to go up slide mechanism (12) between seat arm (72) and pass a plurality of optical axis (123) of going up of sliding seat (10), go up optical axis (123) and go up between sliding seat (10) and be connected through last linear bearing (122).
6. The small-diameter high-precision measuring device according to claim 5, characterized in that: go up optical axis (123) quantity and be two go up optical axis (123) and be parallel to each other, every go up and all install two and go up linear bearing (122) on optical axis (123), go up optical axis (123) and seat arm (72) and install between buffer spring (121).
7. The small-diameter high-precision measuring device according to claim 1, characterized in that: rotary mechanism (6) are including installing connecting plate (11) at last sliding seat (10) top surface, install connector (61) on connecting plate (11) between with clamping jaw (4), still install antifriction bearing (62) through pivot (63) in clamping jaw (4), clamping jaw (4) can revolute pivot (63) and rotate.
8. The small-diameter high-precision measuring device according to claim 7, characterized in that: the clamping jaw is characterized in that an upper mounting hole (42) and a lower mounting hole (41) which are coaxial and communicated with each other are formed in the clamping jaw (4), the diameter of the lower mounting hole (41) is larger than that of the upper mounting hole (42), the connector (61) is installed in the lower mounting hole (41), and the rolling bearing (62) is installed in the upper mounting hole (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021536903.9U CN212432059U (en) | 2020-07-29 | 2020-07-29 | Small-size diameter high-precision measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021536903.9U CN212432059U (en) | 2020-07-29 | 2020-07-29 | Small-size diameter high-precision measuring device |
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| Publication Number | Publication Date |
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| CN212432059U true CN212432059U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021536903.9U Active CN212432059U (en) | 2020-07-29 | 2020-07-29 | Small-size diameter high-precision measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865493A (en) * | 2021-09-28 | 2021-12-31 | 郑州飞龙汽车部件有限公司 | Cylinder diameter on-line measuring device |
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2020
- 2020-07-29 CN CN202021536903.9U patent/CN212432059U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865493A (en) * | 2021-09-28 | 2021-12-31 | 郑州飞龙汽车部件有限公司 | Cylinder diameter on-line measuring device |
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