CN105424981A - Wide-range acceleration transducer rapid calibration test stand - Google Patents
Wide-range acceleration transducer rapid calibration test stand Download PDFInfo
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- CN105424981A CN105424981A CN201610011493.8A CN201610011493A CN105424981A CN 105424981 A CN105424981 A CN 105424981A CN 201610011493 A CN201610011493 A CN 201610011493A CN 105424981 A CN105424981 A CN 105424981A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
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Abstract
The invention discloses a wide-range acceleration transducer rapid calibration test stand. The test stand comprises a test stand frame, a rotating cylinder, a driving motor, a test stand driving mechanism, a revolution radius measurement device, a sensor pressure plate and a test stand driven mechanism. The test stand driven mechanism is fixedly connected with an upper support fixation plate of the test stand frame, the upper end of the rotating cylinder is in threaded connection with the test stand driven mechanism, the lower end of the rotating cylinder is in threaded connection with the test stand driving mechanism, the test stand driving mechanism is fixedly connected with a lower support fixation plate of the test stand frame, the test stand driving mechanism comprises a driving rotating shaft, the upper end of the driving rotating shaft is in key connection with the rotating cylinder, the lower end of the driving rotating shaft is in key connection with a driving motor, the sensor pressure plate is fixed at the side surface of the rotating cylinder and compacts a tested sensor on the side surface of the rotating cylinder, the revolution radius measurement device is fixed between two uptight columns of the test stand frame and is disposed at the same horizontal plane with the tested sensor. The wide-range acceleration transducer rapid calibration test stand can rapidly calibrate a wide-range acceleration transducer.
Description
Technical field
The present invention relates to a kind of testing table, or rather, the present invention relates to a kind of wide-range acceleration transducer Fast Calibration testing table that may be used for Fast Calibration wide-range acceleration transducer.
Background technology
Along with the development of control technology and sensing technology in recent years, sensor is more and more extensive in the application of industrial circle, in miscellaneous sensor, acceleration transducer is widely used, and it is in detection part motion state, spatial attitude, the aspects such as vibrational state have extremely important effect, by a large amount of for navigation, measure, the aspects such as Industry Control.
Small-range acceleration transducer, is mainly used in the acceleration analysis that object space attitude measurement etc. is less than 1g (acceleration of gravity, 9.8m/s2), can carries out the static demarcating in range in calibration process by the method for making space angle easily.And the acceleration transducer of wide range, main measuring vibrations and object moving state etc., for this type of acceleration transducer, measurement range, much larger than 1g, wants that the demarcation carried out in whole range then comparatively bothers.
At present domestic and international about wide range acceleration measurement method and instrument or equipment huge and expensive, or computing method are complicated, and experimentation is tediously long.Through the Searches of Patent Literature, such as, Chinese patent notification number CN10307983B, day for announcing 2013.04.17, application number 201110302992.X, applying date 2011.10.9, applicant Xi'an Communications University, name is called " a kind of simple and easy high-g level acceleration shock table ", although test unit structure is simple described in the technical scheme of this application, manufacturing cost is relatively low, but the method obtaining accekeration according to experimental data processing is very complicated, be inconvenient to process, and use the physical characteristics correlativity of material very strong with testing table parts, during a large amount of manufacture, stability is bad, simultaneously owing to using impact method to test, very large on the impact in serviceable life of testing table.
Summary of the invention
Technical matters solved by the invention makes up the deficiency of prior art to wide-range acceleration transducer scaling method and instrument, provide a kind of can fast to the wide-range acceleration transducer Fast Calibration testing table that wide-range acceleration transducer is demarcated.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize, by reference to the accompanying drawings:
A kind of wide-range acceleration transducer Fast Calibration testing table, comprises testing table frame 1, rotating cylinder 2, drive motor 3, testing table driving mechanism 4, turning radius measurement mechanism 6, sensor pressing plate 7 and testing table follower 9; Described testing table frame 1 is rectangular frame-structure, is provided with support fixed head and lower support fixed head; Testing table follower 9 is fixedly connected with upper support fixed head, and testing table follower 9 comprises collector ring 15; The upper end of rotating cylinder 2 is threaded with testing table follower 9, and the lower end of rotating cylinder 2 is threaded with testing table driving mechanism 4; Testing table driving mechanism 4 is fixedly connected with lower support fixed head, and testing table driving mechanism 4 comprises drive shaft 20, and drive shaft 20 upper end is connected with rotating cylinder 2 key, and drive shaft 20 lower end is connected with drive motor 3 key; Sensor pressing plate 7 is fixed on the side of rotating cylinder 2 and is pressed on the side of rotating cylinder 2 by tested sensor 5; Be located in the same horizontal plane with tested sensor 5 between two root posts that turning radius measurement mechanism 6 is fixed on testing table frame 1.
Described a kind of wide-range acceleration transducer Fast Calibration testing table, wherein, testing table follower 9 also comprises secondary part bearing 11, retracing spring support ring 12, fast assembling-disassembling retracing spring 13, secondary part supporting seat 14, fast assembling-disassembling pin 16, fast assembling-disassembling pin lower portion back-up ring 17; Described secondary part supporting seat 14 is flange plate structure, it is fixed on the upper support fixed head of testing table frame 1, fast assembling-disassembling pin 16 top is connected with secondary part supporting seat 14 by secondary part bearing 11, secondary part bearing 11 and secondary part supporting seat 14 interference fit; Retracing spring support ring 12 is fixed on fast assembling-disassembling pin 16 upper end, and fast assembling-disassembling retracing spring 13 is arranged between retracing spring support ring 12 and secondary part bearing 11 inner ring; Collector ring 15 is fixed on secondary part supporting seat 14 lower end, and collector ring 15 inner ring is connected with fast assembling-disassembling pin 16 key; Fast assembling-disassembling pin 16 lower end is trapezoidal round platform, and fast assembling-disassembling pin lower portion back-up ring 17 is connected to above trapezoidal round platform, and trapezoidal round platform inserts disease and is pressed in the boss of rotating cylinder 2 upper end, and fast assembling-disassembling pin lower portion back-up ring 17 is threaded with rotating cylinder 2 upper end boss.
Described a kind of wide-range acceleration transducer Fast Calibration testing table, wherein, collector ring 15 comprises relatively turnable collector ring inner ring and collector ring outer ring, and collector ring outer ring and secondary part supporting seat 14 are connected by screw, and collector ring inner ring is connected by flat key 18 with fast assembling-disassembling pin 16.
Described a kind of wide-range acceleration transducer Fast Calibration testing table, wherein, drive unit 4 comprises lock ring 19, drive shaft 20, drive part bearing 23, driving shaft back-up ring 24, motor fixed block 27, drive part supporting seat 28 under rotating cylinder; Under rotating cylinder, lock ring 19 is threaded with rotating cylinder 2 lower end round platform, and drive shaft 20 upper end is connected with rotating cylinder 2 lower end round platform central blind hole key, drive part supporting seat 28 and motor fixed block 27 are separately fixed at lower support fixed head top and bottom, drive shaft 20 is connected with drive part supporting seat 28 by drive part bearing 23, drive shaft 20 lower end is threaded with driving shaft back-up ring 24, and the central through hole of drive shaft 20 inside adopts key to be connected with the convex axle in drive motor 3 upper end.
Described a kind of wide-range acceleration transducer Fast Calibration testing table, wherein, drive unit 4 also comprises lower lock ring back-up ring 22 and driving bearing back-up ring 29; Drive shaft 20 upper end between lock ring 19 and rotating cylinder 2 lower end boss, is pressed in the boss of rotating cylinder 2 lower end by lower lock ring back-up ring 22 by lower lock ring back-up ring 22 under rotating cylinder; The blind hole inwall upper end of drive part supporting seat 28 is processed with annular groove, and driving bearing back-up ring 29 is fixed in groove, and its lower end contacts with drive part bearing 23.Described blind hole lower end contacts with drive part bearing 23 bottom surface.
Described a kind of wide-range acceleration transducer Fast Calibration testing table, wherein, turning radius measurement mechanism 6 is made up of vernier 30, rule 31 and aligning laser instrument 32; Rule 31 is horizontally fixed between two root posts of testing table frame 1 homonymy, and the center of rule 31 and tested sensor 5 is in same level, and vernier 30 is slidably connected on rule 31, aims at laser instrument 32 and is arranged on the rule back side.
Described a kind of wide-range acceleration transducer Fast Calibration testing table, wherein, rotating cylinder 2 is a tubular structure part, and dividing equally in the periphery of rotating cylinder 2 has multiple side, and a sensor pressing plate 7 can be installed in each side; Rotating cylinder 2 inside is evenly provided with multiple through hole vertically.
Described a kind of wide-range acceleration transducer Fast Calibration testing table, also comprises computing machine 33, industrial computer 34, motor driver 8; Computing machine 33 is connected by ethernet line with industrial computer 34, the analog output of industrial computer 34 is connected by signal wire with motor driver 8, motor driver 8 is connected by signal wire with drive motor 3, the digital input end of industrial computer 34 is connected by signal wire with collector ring 15 upper end, the feeder ear of industrial computer 34 is connected by supply lines with end interface on collector ring 15, is connected respectively by signal connecting line and supply lines with collector ring 15 times end interfaces of described upper end interface conducting with tested sensor 5.
Compared with prior art, the invention has the beneficial effects as follows:
1. wide-range acceleration transducer Fast Calibration testing table of the present invention can complete the rating test of wide-range acceleration transducer in whole range ability, and experimental data processing is simple and quick.
2. the fast assembling disassembling structure that has of wide-range acceleration transducer Fast Calibration testing table of the present invention, dismounting and the installation of tested sensor can be completed rapidly, rotating cylinder can install 6 sensors at most simultaneously, conveniently carries out Fast Calibration to multiple sensor simultaneously.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is the front view of wide-range acceleration transducer Fast Calibration testing table of the present invention;
Fig. 2 is the cut-open view of wide-range acceleration transducer Fast Calibration testing table slave unit of the present invention;
Fig. 3 is the cut-open view of wide-range acceleration transducer Fast Calibration testing table drive unit of the present invention;
Fig. 4 a and Fig. 4 b is front view and the left view of wide-range acceleration transducer Fast Calibration testing table turning radius measurement mechanism of the present invention respectively;
Fig. 5 a and Fig. 5 b is cut-open view and the vertical view of wide-range acceleration transducer Fast Calibration testing table rotating cylinder of the present invention respectively;
Fig. 6 is wide-range acceleration transducer Fast Calibration testing table electric control part separation structure figure of the present invention;
In figure: 1. testing table frame, 2. rotating cylinder, 3. drive motor, 4. testing table driving mechanism, 5. tested sensor, 6. turning radius measurement mechanism, 7. sensor pressing plate, 8. motor driver, 9. testing table follower, 10. slave unit gib screw, 11. secondary part bearings, 12. retracing springs support jump ring, 13. fast assembling-disassembling retracing springs, 14. secondary part supporting seats, 15. collector rings, 16. fast assembling-disassembling pins, 17. fast assembling-disassembling pin lower portion back-up rings, 18. flat keys, lock ring under 19. rotating cylinders, 20. drive shafts, 21. drive shaft flat keys, 22. times lock ring back-up rings, 23. drive part bearings, 24. driving shaft back-up rings, 26. motors drive flat key, 27. motor fixed blocks, 28. drive part supporting seats, 29. driving bearing back-up rings, 30. verniers, 31. rules, 32. aim at laser instrument, 33. computing machines, 34. industrial computers, 35. external units.
Embodiment
Below in conjunction with accompanying drawing, the present invention is explained in detail:
Consult Fig. 1, this figure is the front view of wide-range acceleration transducer Fast Calibration testing table mechanical part of the present invention, and this mechanical part mainly comprises nine parts as shown in the figure, is followed successively by testing table frame 1, rotating cylinder 2, drive motor 3, testing table driving mechanism 4, tested sensor 5, turning radius measurement mechanism 6, sensor pressing plate 7, motor driver 8, testing table follower 9.
Testing table frame 1 is rectangular frame-structure, primarily of 12 length, the different but rectangular beam that structure and material are all identical is welded, wherein four isometric aluminum rectangular beams are as the column of this framework, remaining 8 isometric rectangular beams are welded to form the square frame of upper and lower two levels respectively at the upper end of rectangular frame and middle part and four described root posts, testing table frame 1 is placed directly on ground, guarantees that it is firm.
Two square frames are covered with respectively support fixed head and lower support fixed head, are bolted between fixed head and framework.Ensure upper support fixed head and lower support fixed head horizontal positioned and be parallel to each other simultaneously.Motor driver 8 is fixed on support fixed head, and the upper support fixed head of testing table frame 1 and the center of lower support fixed head are processed with through hole, and testing table follower 9 is fixed by screws in upper support fixed head center through described through hole.Testing table driving mechanism 4 and drive motor 3 are fixed by screws in lower support fixed head center through described through hole.The upper end of rotating cylinder 2 is threaded with testing table follower 9, and the lower end of rotating cylinder 2 is threaded with testing table driving mechanism 4.Sensor pressing plate 7 is screwed on the side of rotating cylinder 2, and is pressed on the side of rotating cylinder 2 by sensor pressing plate 7 by tested sensor 5.Keep center in same level with tested sensor 5 between two root posts that turning radius measurement mechanism 6 is fixed on testing table frame 1.
Consult Fig. 2, this figure is the cut-open view of wide-range acceleration transducer Fast Calibration bench run platform follower 9 of the present invention.As shown in the figure, testing table follower 9 mainly comprises slave unit gib screw 10, secondary part bearing 11, retracing spring support ring 12, fast assembling-disassembling retracing spring 13, secondary part supporting seat 14, fast assembling-disassembling pin 16, fast assembling-disassembling pin lower portion back-up ring 17, flat key 18.
Secondary part supporting seat 14 is flange plate structure, the diameter of its center pit is greater than the diameter of fast assembling-disassembling pin 16, its upper end is processed with the blind hole coaxial with center pit, the outer ring interference fit of this blind hole inwall and secondary part bearing 11, guarantees bearing outer ring and secondary part supporting seat 14 geo-stationary.Described blind hole lower end contacts with secondary part bearing 11 bottom surface, and it act as and carries out axial location to secondary part bearing 11.There are equally distributed 6 threaded holes the outer ring of secondary part supporting seat 14, and secondary part supporting seat 14 is fixed on the upper support fixed head of testing table frame 1 by this threaded hole by slave unit gib screw 10.Secondary part supporting seat 14 inside have one with the through hole of its axis being parallel, going between is connected by the outer ring of through hole with collector ring 15.
Collector ring 15 has inner ring, outer ring, its inner ring and outer ring can relatively rotate, the diameter of outer ring is consistent with the diameter of secondary part supporting seat 14 lower end boss, collector ring outer ring and secondary part supporting seat 14 are connected by screw, the inwall of collector ring inner ring matches with fast assembling-disassembling pin 16, and there is keyway its lower end.There is keyway at the middle part of fast assembling-disassembling pin 16, and flat key 18 coordinates with the keyway of this keyway and collector ring 15 inner ring, guarantees collector ring 15 inner ring and fast assembling-disassembling pin 16 synchronous axial system and the two in the axial direction can relative sliding.
Fast assembling-disassembling pin 16 is multidiameter, and its lower end is trapezoidal round platform, and this trapezoidal round platform inserts in the upper end boss of rotating cylinder 2, and have an annular boss above trapezoidal round platform, this annular boss upper surface contacts with fast assembling-disassembling pin lower portion back-up ring 17.Keyway is had in the middle part of fast assembling-disassembling pin 16, there is annular groove upper end, flat key 18 coordinates with the keyway of described middle part keyway and collector ring 15 inner ring, retracing spring support ring 12 is fixed on fast assembling-disassembling pin 16 by upper end annular groove, and fast assembling-disassembling retracing spring 13 is arranged between retracing spring support ring 12 and secondary part bearing 11 inner ring.
Fast assembling-disassembling pin lower portion back-up ring 17 is solid of revolution parts, there is a blind hole coaxial with center pit its lower end, blind hole inner face contacts with the annular boss of fast assembling-disassembling pin 16, this blind hole is processed with internal thread, fast assembling-disassembling pin lower portion back-up ring 17 is connected by the external thread of described internal thread with rotating cylinder 2 upper end boss, in the two rundown process, the trapezoidal round platform of fast assembling-disassembling pin 16 lower end is pressed in the boss of rotating cylinder 2 upper end, guarantee that fast assembling-disassembling pin 16 is with rotating cylinder 2 synchronous rotary by the friction of end face, now fast assembling-disassembling retracing spring 13 is in compressive state.When fast assembling-disassembling pin lower portion back-up ring 17 is separated with rotating cylinder 2, under the effect of fast assembling-disassembling retracing spring 13, fast assembling-disassembling pin 16 departs from rotating cylinder 2 fast, thus testing table follower 9 is separated with rotating cylinder 2, completes disassembly process.
The assembling process of wide-range acceleration transducer Fast Calibration bench run platform follower 9:
Collector ring 15 and secondary part supporting seat 14 are connected by screw, and the two are fixed on the upper support fixed head of testing table frame 1 by slave unit gib screw 10.Secondary part bearing 11 is pressed into secondary part supporting seat 14 inner, the two interference fit.Fast assembling-disassembling pin lower portion back-up ring 17 is inserted in from fast assembling-disassembling pin 16 upper end, coordinates with the annular boss of its lower end.Fast assembling-disassembling pin 16 is inserted from the collector ring 15 lower central hole just assembled, by flat key 18 and collector ring 15 synchronous axial system, fast assembling-disassembling retracing spring 13 is inserted in from fast assembling-disassembling pin 16 upper end and is connected with secondary part bearing 11 inner ring.Return spring supporting ring 12 is finally installed and fixes fast assembling-disassembling retracing spring 13.
Consult Fig. 3, this figure is the cut-open view of wide-range acceleration transducer Fast Calibration testing table drive unit 4 of the present invention.As shown in the figure, the drive unit 4 of this testing table comprises lock ring 19 under rotating cylinder, drive shaft 20, drive shaft flat key 21, lower lock ring back-up ring 22, drive part bearing 23, driving shaft back-up ring 24, motor drive flat key 26, motor fixed block 27, drive part supporting seat 28, driving bearing back-up ring 29.
Under rotating cylinder, lock ring 19 is solid of revolution parts, the diameter of its center pit is slightly larger than the external diameter of drive shaft 20, its upper end is processed with the blind hole coaxial with center pit, and this blind hole inwall is processed with internal thread, and under rotating cylinder, lock ring 19 is connected with the external thread on the round platform of rotating cylinder 2 lower end by this internal thread.By lower lock ring back-up ring 22, drive shaft 20 upper end is pressed in the boss of rotating cylinder 2 lower end in the two rundown process.
There is the multidiameter of central through hole drive shaft 20 inside, and central through hole inwall side has keyway, and motor drives flat key 26 to match with the keyway of the convex axle of this keyway and drive motor 3 upper end, guarantees drive shaft 20 and drive motor 3 synchronous rotary.The external cylindrical surface of drive shaft 20 upper end has keyway, and drive shaft flat key 21 matches with the keyway on this keyway and rotating cylinder 2 lower end round platform central blind hole inwall, guarantees drive shaft 20 and rotating cylinder 2 synchronous rotary.There is an annular groove drive shaft 20 middle and upper part, and lower lock ring back-up ring 22 is fixed in this annular groove, and carries out axial location to drive shaft 20.The second segment multidiameter outside surface of drive shaft 20 lower end and the inner ring interference fit of drive part bearing 23, the upper surface of drive part bearing 23 inner ring and the second segment multidiameter shoulder grafting of drive shaft 20 touch locates.Drive shaft 20 bottom one section of multidiameter is processed with external thread, and driving shaft back-up ring 24 is solid of revolution parts, and its center pit is processed with internal thread.Drive shaft 20 and driving shaft back-up ring 24 are threaded connection, and the upper surface of driving shaft back-up ring 24 contacts with the shaft shoulder of drive shaft 20 locates, and guarantees that drive part bearing 23 inner ring is fixed vertically.
Drive part supporting seat 28 is flange plate structure, the diameter of its center pit is greater than the external diameter of drive shaft 20, its upper end is processed with the blind hole coaxial with center pit, the outer ring interference fit of this blind hole inwall and drive part bearing 23, guarantees bearing outer ring and drive part supporting seat 28 geo-stationary.Described blind hole inwall upper end is processed with annular groove, and driving bearing back-up ring 29 is fixed in this groove, and its lower end contacts with the outer ring of drive part bearing 23.Described blind hole lower end contacts with drive part bearing 23 bottom surface, and it act as and carry out axial location to drive part bearing 23 outer ring together with driving bearing back-up ring 29.There are equally distributed 6 threaded holes the outer ring of drive part supporting seat 28, the shell of the lower support fixed head of corresponding testing table support 1, motor fixed block 27 and drive motor 3 is also distributed with same threaded hole, is fixed on the lower support fixed head of testing table frame 1 by the shell of screw by drive part supporting seat 28, motor fixed block 27 and drive motor 3.
Motor fixed block 27 upper surface contacts with the lower support fixed head lower surface of testing table support 1, the housing contacts of motor fixed block 27 lower surface and drive motor 3.
The assembling process of wide-range acceleration transducer Fast Calibration testing table drive unit 4:
Drive part supporting seat 28 puts into the center pit on the lower support fixed head of testing table frame 1, and the outside surface of drive part supporting seat 28 lower end round platform contacts with upper surface with the center bore inner wall on lower support fixed head respectively with the lower surface of upper round platform.Drive part bearing 23 is put into the center pit interference fit of drive part supporting seat 28, the lower surface of drive part bearing 23 contacts with the lower surface of drive part supporting seat 28 blind internal bore.Drive shaft 20 is put into dead eye, and the upper surface of drive part bearing 23 inner ring and the second segment multidiameter shoulder grafting of drive shaft 20 touch locates.Driving shaft back-up ring 24 is threadedly attached in drive shaft 20, axial location is carried out to drive part bearing 23.The convex axle in upper end of drive motor 3 drives flat key 26 to be connected with drive shaft 20 by motor.Be fixed on the lower support fixed head of testing table frame 1 by the shell of screw by drive part supporting seat 28, motor fixed block 27 and drive motor 3.Driving bearing back-up ring 29 is fixed in the groove of drive part supporting seat 28.Under rotating cylinder, lock ring 19 is inserted in from drive shaft 20 top, and lower lock ring back-up ring 22 puts into the upper end annular groove of drive shaft 20.Drive shaft 20 upper end is connected with rotating cylinder 2 by drive shaft flat key 21, is threadedly attached on rotating cylinder 2 by lock ring under rotating cylinder 19.
Consult Fig. 4, this figure is front view and the left view of wide-range acceleration transducer Fast Calibration testing table turning radius measurement mechanism 6 of the present invention.This turning radius measurement mechanism 6 is made up of vernier 30, rule 31 and aligning laser instrument 32.
Rule 31 is the straight steel plate of length of xsect one-tenth ' T ' type, the two ends of narrower one side contact with the outer surface of two root posts of testing table frame 1 homonymy respectively, and be screwed connection, rule 31 keeps level in the longitudinal direction, and the center of rule 31 and tested sensor 5 is in same level.The narrower one side of rule 31 is printed on millimetre-sized size scale, and 0 scale mark is positioned at the center of rule 31, and numerical value corresponding to its two ends for increase gradually away from 0 scale mark, and is symmetrically distributed.
Vernier 30 is rectangular structure, the large plane side of rectangular parallelepiped is processed with ' T ' type groove along its length, and the shape of groove is identical with rule 31 cross section, and vernier 30 and rule 31 keep transition fit, vernier 30 can be free to slide along its length on rule 31, and does not have excessive gap.The large plane centre position at the groove back side is processed with a blind hole perpendicular to large plane, laser instrument 32 is aimed at for installing, the diameter of blind hole with aim at laser instrument 33 external diameter interference fit, the axis through hole vertical with blind hole is processed with at blind hole top, the diameter of through hole, slightly larger than the diameter wire of aligning laser instrument 32, is drawn for the lead-in wire aiming at laser instrument 32.The upper surface center position of vernier 30 groove side is processed with a vernier graduation line, when the axis that the laser that aligning laser instrument 32 sends is formed by fast assembling-disassembling pin 16 and drive shaft 20, the scale mark on vernier 30 aligns with 0 scale mark on rule 31.
Consult Fig. 5, this figure is cut-open view and the vertical view of wide-range acceleration transducer Fast Calibration testing table rotating cylinder 2 of the present invention.Rotating cylinder 2 is a cylinder-like structure part, equally distributed 6 sides are cut out in the outside of rotating cylinder 2, there are 4 screw holes each side, tested sensor 5 is pressed on the side of rotating cylinder 2 by screw by sensor pressing plate 7, each side of rotating cylinder 2 can be installed a sensor pressing plate 7, thus the wide-range acceleration transducer Fast Calibration testing table described in this can realize the demarcation to one or more sensor.In order to alleviate the quality of rotating cylinder 2,6 through holes are uniformly distributed vertically in rotating cylinder 2 inside.
The upper end of rotating cylinder 2 has one around the round platform of axis, and round platform external process has screw thread, and rotating cylinder 2 is connected by the internal thread of this screw thread with fast assembling-disassembling pin lower portion back-up ring 17.Be processed with the blind hole around axis in described round platform, this blind hole matches with fast assembling-disassembling pin 16, and lower surface is processed with tapered blind hole to blind hole.
The lower end of rotating cylinder 2 has one around the round platform of axis, and round platform external process has screw thread, and rotating cylinder 2 is connected by the internal thread of this screw thread with lock ring under rotating cylinder 19.Be processed with the blind hole around axis in described round platform, the inwall of this blind hole side is processed with keyway, rotating cylinder 2 is matched with drive shaft 20 by drive shaft flat key 21.
Consult Fig. 6, the automatically controlled part of wide-range acceleration transducer Fast Calibration testing table is made up of computing machine 33, industrial computer 34, motor driver 8, drive motor 3, collector ring 15, tested sensor 5 and external unit 35.Computing machine 33 is connected by ethernet line with industrial computer 34, transmits testing table signal for computing machine 33 to industrial computer transfer control signal and industrial computer 34 to computing machine 33.The analog output of industrial computer 34 is connected by signal wire with motor driver 8, and for transmitting rotating speed of target signal to motor driver 8, motor driver 8 transmits actual speed signal by this signal wire to industrial computer 34.Motor driver 8 is connected by signal wire with drive motor 3, and for transmitting drive singal to drive motor 3, drive motor 3 feeds back to motor driver 8 the actual speed signal that in motor, photoelectric encoder is measured by this signal wire.Drive motor 3 is connected with mechanical part, drives testing table mechanical part to rotate.The digital input end of industrial computer 34 and feeder ear are connected respectively by signal connecting line and supply lines with end interface on collector ring 15, be connected with tested sensor 5 respectively by signal connecting line and supply lines with collector ring 15 times end interfaces (the lower end interface be namely conducted with collector ring 15 upper end connecting interface) of end interface conducting on this, supply lines is used for powering to tested sensor 5, signal connecting line is used for the output signal of tested sensor 5 to pass to collector ring 15, and then feeds back to industrial computer 34.Industrial computer 15 can be connected with external unit 35 by ethernet line, for the output signal of the motor message of testing table and tested sensor 5 is passed to external unit, for the test function of expanding test platform.
Set forth wide-range acceleration transducer Fast Calibration testing table fast assembling-disassembling process of the present invention below.
Unloading process: testing table as shown in Figure 1, fast assembling-disassembling pin lower portion back-up ring 17 is screwed down from the screw thread of rotating cylinder 2, fast assembling-disassembling pin lower portion back-up ring 17 is separated with rotating cylinder 2, and now fast assembling-disassembling pin 16 is separated with rotating cylinder 2 upper end round platform under the effect of fast assembling-disassembling retracing spring 13.By rotating cylinder 2 from the dismounting namely completing described wide-range acceleration transducer Fast Calibration testing table after the screw thread of lock ring rotating cylinder 19 screws down.
Installation process: testing table as shown in Figure 1, is connected rotating cylinder 2 with drive shaft 20 by drive shaft flat key 21, drive shaft 20 is pressed on by lower round platform lock ring under rotating cylinder 19 being threadedly attached to rotating cylinder 2 lower end of rotating cylinder 2.Fast assembling-disassembling pin 16 is pulled down the upper round platform center pit putting into rotating cylinder 2, and by fast assembling-disassembling pin lower portion back-up ring 17 by being screwed on rotating cylinder 2, namely complete the installation of described wide-range acceleration transducer Fast Calibration testing table.
By rotating cylinder 2 from the dismounting being more convenient for tested sensor 5 after testing table disassembles.If certainly rotating cylinder 2 is not disassembled the dismounting that can complete tested sensor 5 too from testing table, but process will more loaded down with trivial details inconvenience.If this wide-range acceleration transducer Fast Calibration testing table is used in factory and carries out timing signal to large batch of sensor, multiple rotating cylinder can be had, when the sensor on first rotating cylinder carries out timing signal, second and the 3rd rotating cylinder can complete the dismounting of multiple sensor.Directly pulled down by rotating cylinder when the transducer calibration on first rotating cylinder is complete, install second rotating cylinder, the sensor on directly rolling to second is demarcated.Can save time greatly compared to traditional speed pickup Fast Calibration testing table like this, raise the efficiency.
Illustrate the course of work of wide-range acceleration transducer Fast Calibration testing table below:
First, the one or more tested sensor 5 will demarcated is fixed on rotating cylinder 2 by sensor pressing plate 7.Rotating cylinder 2 is installed on testing table, fast assembling-disassembling pin lower portion back-up ring 17 and rotating cylinder 2 is passed through screwed tight, fast assembling-disassembling pin 16 is fixed in rotating cylinder 2, complete the axis of rotating cylinder and radial fixing.Afterwards, aim at laser instrument 32 and rotating cylinder 2 coordinative role, thus complete the measurement of tested sensor 5 turning radius.
Have photoelectric encoder outside rotating cylinder 2, the rotating speed of drive motor 3 is controlled by industrial computer 33, achieves the Digital Control of testing table.Photoelectric encoder is by rotating cylinder 2 speed feedback to industrial computer 34, and industrial computer 34 realizes the control to rotating cylinder 2 rotating speed by drive motor, achieves closed-loop control.
Finally, by the control system of testing table, control the rotating speed of drive motor accurately and fast, rotating cylinder 2 can be rotated with friction speed, pass through formula:
complete one or more demarcation of tested sensor 5 under different acceleration condition.
The present invention adopts industrial computer 34 Digital Control drive motor, the rotating speed of control rotating cylinder accurately and fast, and rotating cylinder is rotated with different rotating speeds.Fast assembling disassembling structure, can complete rapidly the fixing and dismounting of rotating cylinder and sensor, each rotating cylinder can install 6 sensors at most simultaneously; Computing formula is simple, accurate, can directly show the acceleration after calculating, simply efficiently by control system.Effectively solve wide range acceleration measurement method and instrument or equipment huge and expensive, or computing method are complicated, the problems such as experimentation is tediously long, improve the service precision of sensor, promote the development of basic subject and engineering field to a certain extent.
Claims (8)
1. a wide-range acceleration transducer Fast Calibration testing table, it is characterized in that, comprise testing table frame (1), rotating cylinder (2), drive motor (3), testing table driving mechanism (4), turning radius measurement mechanism (6), sensor pressing plate (7) and testing table follower (9); Described testing table frame (1) is rectangular frame-structure, is provided with support fixed head and lower support fixed head; Testing table follower (9) is fixedly connected with upper support fixed head, and testing table follower (9) comprises collector ring (15); The upper end of rotating cylinder (2) is threaded with testing table follower (9), and the lower end of rotating cylinder (2) is threaded with testing table driving mechanism (4); Testing table driving mechanism (4) is fixedly connected with lower support fixed head, testing table driving mechanism (4) comprises drive shaft (20), drive shaft (20) upper end is connected with rotating cylinder (2) key, and drive shaft (20) lower end is connected with drive motor (3) key; Sensor pressing plate (7) is fixed on the side of rotating cylinder (2) and is pressed on the side of rotating cylinder (2) by tested sensor (5); Be located in the same horizontal plane with tested sensor (5) between two root posts that turning radius measurement mechanism (6) is fixed on testing table frame (1).
2. a kind of wide-range acceleration transducer Fast Calibration testing table as claimed in claim 1, it is characterized in that, described testing table follower (9) also comprises secondary part bearing (11), retracing spring support ring (12), fast assembling-disassembling retracing spring (13), secondary part supporting seat (14), fast assembling-disassembling pin (16), fast assembling-disassembling pin lower portion back-up ring (17); Described secondary part supporting seat (14) is flange plate structure, it is fixed on the upper support fixed head of testing table frame (1), fast assembling-disassembling pin (16) top is connected with secondary part supporting seat (14) by secondary part bearing (11), secondary part bearing (11) and secondary part supporting seat (14) interference fit; Retracing spring support ring (12) is fixed on fast assembling-disassembling pin (16) upper end, and fast assembling-disassembling retracing spring (13) is arranged between retracing spring support ring (12) and secondary part bearing (11) inner ring; Collector ring (15) is fixed on secondary part supporting seat (14) lower end, and collector ring (15) inner ring is connected with fast assembling-disassembling pin (16) key; Fast assembling-disassembling pin (16) lower end is trapezoidal round platform, fast assembling-disassembling pin lower portion back-up ring (17) is connected to above trapezoidal round platform, trapezoidal round platform inserts disease and is pressed in the boss of rotating cylinder (2) upper end, and fast assembling-disassembling pin lower portion back-up ring (17) is threaded with rotating cylinder (2) upper end boss.
3. a kind of wide-range acceleration transducer Fast Calibration testing table as claimed in claim 2, it is characterized in that, described collector ring (15) comprises relatively turnable collector ring inner ring and collector ring outer ring, collector ring outer ring and secondary part supporting seat (14) are connected by screw, and collector ring inner ring is connected by flat key (18) with fast assembling-disassembling pin (16).
4. a kind of wide-range acceleration transducer Fast Calibration testing table as claimed in claim 1, it is characterized in that, described testing table driving mechanism (4) also comprises lock ring (19), drive part bearing (23), driving shaft back-up ring (24), motor fixed block (27), drive part supporting seat (28) under rotating cylinder, under rotating cylinder, lock ring (19) is threaded with rotating cylinder (2) lower end round platform, and drive shaft (20) upper end is connected with rotating cylinder (2) lower end round platform central blind hole key, drive part supporting seat (28) and motor fixed block (27) are separately fixed at lower support fixed head top and bottom, drive shaft (20) is connected with drive part supporting seat (28) by drive part bearing (23), drive shaft (20) lower end is threaded with driving shaft back-up ring (24), the central through hole of drive shaft (20) inside adopts key to be connected with the convex axle in drive motor (3) upper end.
5. a kind of wide-range acceleration transducer Fast Calibration testing table as claimed in claim 4, is characterized in that, described testing table driving mechanism (4) also comprises lower lock ring back-up ring (22) and driving bearing back-up ring (29); Lower lock ring back-up ring (22) to be positioned under rotating cylinder between lock ring (19) and rotating cylinder (2) lower end boss, is pressed in the boss of rotating cylinder (2) lower end by lower lock ring back-up ring (22) by drive shaft (20) upper end; The blind hole inwall upper end of drive part supporting seat (28) is processed with annular groove, and driving bearing back-up ring (29) is fixed in groove, and its lower end contacts with drive part bearing (23).Described blind hole lower end contacts with drive part bearing (23) bottom surface.
6. a kind of wide-range acceleration transducer Fast Calibration testing table as claimed in claim 1, it is characterized in that, described turning radius measurement mechanism (6) is made up of vernier (30), rule (31) and aligning laser instrument (32); Rule (31) is horizontally fixed between two root posts of testing table frame (1) homonymy, and the center of rule (31) and tested sensor (5) is in same level, vernier (30) is slidably connected on rule (31), aims at laser instrument (32) and is arranged on the rule back side.
7. a kind of wide-range acceleration transducer Fast Calibration testing table as claimed in claim 1, it is characterized in that, described rotating cylinder (2) is a tubular structure part, divide equally in the periphery of rotating cylinder (2) and have multiple side, a sensor pressing plate (7) can be installed in each side; Rotating cylinder (2) inside is evenly provided with multiple through hole vertically.
8. a kind of wide-range acceleration transducer Fast Calibration testing table as claimed in claim 1, is characterized in that, also comprises computing machine (33), industrial computer (34), motor driver (8), computing machine (33) is connected by ethernet line with industrial computer (34), the analog output of industrial computer (34) is connected by signal wire with motor driver (8), motor driver (8) is connected by signal wire with drive motor (3), the digital input end of industrial computer (34) is connected by signal wire with collector ring (15) upper end, the feeder ear of industrial computer (34) is connected by supply lines with the upper end interface of collector ring (15), be connected with tested sensor (5) respectively by signal connecting line and supply lines with end interface under the collector ring (15) of described upper end interface conducting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610011493.8A CN105424981B (en) | 2016-01-08 | 2016-01-08 | Wide-range acceleration transducer Fast Calibration testing stand |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610011493.8A CN105424981B (en) | 2016-01-08 | 2016-01-08 | Wide-range acceleration transducer Fast Calibration testing stand |
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| CN105424981A true CN105424981A (en) | 2016-03-23 |
| CN105424981B CN105424981B (en) | 2018-05-11 |
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| CN201610011493.8A Expired - Fee Related CN105424981B (en) | 2016-01-08 | 2016-01-08 | Wide-range acceleration transducer Fast Calibration testing stand |
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Cited By (6)
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| CN106597024A (en) * | 2016-12-30 | 2017-04-26 | 浙江大学 | Micro-acceleration vibrating device |
| CN106597023A (en) * | 2016-12-30 | 2017-04-26 | 浙江大学 | Electromagnetic driving type micro-acceleration vibration apparatus |
| CN106706960A (en) * | 2016-12-27 | 2017-05-24 | 浙江吉利汽车研究院有限公司 | Drop test bench used for intermediate checking of acceleration transducer and detection method |
| CN110567731A (en) * | 2019-08-15 | 2019-12-13 | 吉林大学 | double-rotation brake performance tester inspection bench |
| CN111103439A (en) * | 2018-10-25 | 2020-05-05 | 航天科工惯性技术有限公司 | Accelerometer testing device |
| CN112517241A (en) * | 2020-11-16 | 2021-03-19 | 徐锦善 | Magnetic roller for wet-type permanent magnet drum-type high-intensity magnetic separator and assembling process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110567731A (en) * | 2019-08-15 | 2019-12-13 | 吉林大学 | double-rotation brake performance tester inspection bench |
| CN112517241A (en) * | 2020-11-16 | 2021-03-19 | 徐锦善 | Magnetic roller for wet-type permanent magnet drum-type high-intensity magnetic separator and assembling process thereof |
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