CN114353851B - Turntable device for sensor calibration test - Google Patents
Turntable device for sensor calibration test Download PDFInfo
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- CN114353851B CN114353851B CN202111593201.3A CN202111593201A CN114353851B CN 114353851 B CN114353851 B CN 114353851B CN 202111593201 A CN202111593201 A CN 202111593201A CN 114353851 B CN114353851 B CN 114353851B
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Abstract
The invention discloses a turntable device for a sensor calibration test, which belongs to the technical field of sensor calibration, when only one sensor product needs to be calibrated, a sensor to be calibrated is fixed on an adapter plate, and a jackscrew on the side surface of a sliding block cylinder on one side without the sensor product is loosened, so that a sliding block can freely slide in the sliding block cylinder; a jackscrew on the side surface of the sliding block barrel on one side of the sensor product is screwed down, so that the sliding block is fixed at the middle position in the sliding block barrel, and the sliding of the sliding block in the sliding block barrel is limited; when the rotating shaft rotates, the sliding block on the other side can generate certain centrifugal force due to the centrifugal effect to balance the centrifugal force generated by the product; when a plurality of products need to be calibrated simultaneously, jackscrews on the side faces of the sliding block cylinders on two sides can be loosened, so that balanced centrifugal force is generated and mutually offset, and further the influence of the rotating centrifugal force on the calibration precision of the sensor can be eliminated by adding a centrifugal force self-balancing device consisting of the sliding blocks, the sliding block cylinders and the springs.
Description
Technical Field
The invention relates to the technical field of sensor calibration, in particular to a turntable device for sensor calibration test.
Background
The process of scaling the sensor with a standard instrument is called calibration. In particular to the piezoelectric pressure sensor, a series of processes of using a special calibration device, such as a piston manometer, to generate a standard force with a known magnitude to act on the sensor, outputting a corresponding charge signal by the sensor, measuring the charge signal by using a standard detection device with a known precision to obtain the magnitude of the charge signal, and obtaining a set of input-output relations, are calibration processes of the piezoelectric pressure sensor. The three-axis turntable is widely applied to calibration of various direction sensors, and the stability and the repeated positioning precision of the structure of the three-axis turntable have decisive influence on the measurement precision of the sensors.
The traditional three-axis turntable adopts bevel gears or worm gears and other mechanisms for transmission, has a complex structure, has very high requirements on the processing precision of structural members and the technical level of assembly workers, and is high in manufacturing cost and maintenance cost and difficult to maintain. At present, the existing three-axis rotary table is manually rotated for calibration, the rotating speed is low, and only static calibration can be carried out. Alloy steel or cast iron is used as a base in the aspect of structure, the precision is greatly influenced by the change of environmental temperature, and no nonmagnetic turntable is arranged at home at present, so that the high-precision calibration of the sensor cannot be realized.
Disclosure of Invention
The invention provides a turntable device for sensor calibration test, which can avoid the influence of ambient temperature on a base, realize high-precision, high-rotating-speed and high-temperature sensor eccentric calibration, and eliminate the influence of rotating centrifugal force on the calibration precision of a sensor by providing a centrifugal force self-balancing device.
The specific technical scheme provided by the invention is as follows:
the invention provides a turntable device for sensor calibration test, which comprises a marble base, a calibration table base fixed on the upper surface of the marble base, a sensor calibration device fixed on the calibration table base and a coaxial heat preservation device, wherein the sensor calibration device comprises a first support seat, a second support seat, a third support seat and a fourth support seat fixed on the upper surface of the calibration table base, a driving motor fixed on the fourth support seat, a rotating shaft connected with an output shaft of the driving motor and a calibration assembly connected with the rotating shaft, wherein the calibration assembly comprises a calibration rotating shaft, a connecting seat fixed on the calibration rotating shaft, an upper fixing seat and a lower fixing seat respectively fixed on the upper side and the lower side of the connecting seat, an upper connecting plate and a lower connecting plate respectively fixed on the upper fixing seat and the lower fixing seat, an upper centrifugal force self-balancing device positioned between the connecting seat and the upper fixing seat and a lower centrifugal force self-balancing device positioned between the connecting seat and the lower fixing seat, go up centrifugal force self-balancing unit with centrifugal force self-balancing unit all includes 1 slider section of thick bamboo down, installs 1 slider and 1 spring inside a slider section of thick bamboo, the middle part of slider section of thick bamboo is provided with and is used for fixing the rectangular shape screw hole of slider, when quiescent condition, go up centrifugal force self-balancing unit with set up down in the centrifugal force self-balancing unit one of the spring is in tensile state and another is in compression state or go up centrifugal force self-balancing unit with set up down in the centrifugal force self-balancing unit the spring all is in tensile state or compression state.
Optionally, the springs arranged in the upper centrifugal force self-balancing device and the lower centrifugal force self-balancing device are both located on one side of the slider, which is far away from the calibration rotating shaft, or the springs arranged in the upper centrifugal force self-balancing device and the lower centrifugal force self-balancing device are both located on one side of the slider, which is close to the calibration rotating shaft.
Optionally, one of the springs disposed in the upper centrifugal force self-balancing device and the lower centrifugal force self-balancing device is located on a side of the slider away from the calibration rotating shaft, and the other spring is located on a side of the slider close to the calibration rotating shaft.
Optionally, 6 upper centrifugal force self-balancing devices are arranged between the connecting seat and the upper fixing seat, 6 lower centrifugal force self-balancing devices are arranged between the connecting seat and the lower fixing seat, the upper centrifugal force self-balancing devices and the lower centrifugal force self-balancing devices are symmetrically distributed on two sides of the calibration rotating shaft, and two ends of the spring are respectively fixed on the inner wall of the slider barrel and the slider.
Optionally, the calibration rotating shaft and the rotating shaft are connected through a coupling, two ends of the calibration rotating shaft are respectively mounted on the first supporting seat and the second supporting seat through bearings, and the coaxial heat preservation device is fixed on the calibration table base through a fixing support.
Optionally, the coaxial heat preservation device includes a lower outer shell fixed on the calibration table base by the fixing support, an upper outer shell mounted on the lower outer shell by matching an upper end and a lower end with a shaft sleeve, a lower inner shell and an upper inner shell located inside the lower outer shell and the upper outer shell, and a handle fixed on the upper outer shell, wherein one side of the upper outer shell and one side of the lower outer shell are hinged by a hinge, and the upper outer shell and the lower outer shell are fixed by a buckle.
Optionally, the shaft sleeve is fixed to the lower housing by using a lower end head, the lower end head is fixed to the lower housing by using a screw, the upper end head is fixed to the upper housing by using a screw, and the calibration rotating shaft penetrates through the shaft sleeve.
Optionally, the connecting seat adopts the connecting block to fix mark on the pivot, the bearing adopts the end cover to install respectively first supporting seat, the second supporting seat with on the third supporting seat, the end cover adopts the screw to fix respectively first supporting seat, the second supporting seat with on the third supporting seat.
Optionally, an external transfer shaft is arranged at the left end of the calibration rotating shaft, and a conductive slip ring and a coaxial transfer flange are mounted on the external transfer shaft.
Optionally, the driving motor is fixed on the fourth supporting seat by bolts, the rotating shaft is connected with an output shaft of the driving motor by a transmission shaft connector, and the upper fixing seat, the lower fixing seat and the connecting seat are fixed by bolts.
The invention has the following beneficial effects:
the embodiment of the invention provides a calibration table base of a turntable device for sensor calibration test, which is arranged on marble foundation stones, wherein the marble foundation stones are influenced by ambient temperature to have extremely small deformation, so that the influence of the ambient temperature on the foundation stones is avoided, and the influence of the ambient temperature on the calibration precision of a sensor is reduced; a jackscrew on the side surface of the sliding block barrel on one side of the sensor product is screwed, so that the sliding block is fixed at the middle position in the sliding block barrel, and the sliding of the sliding block in the sliding block barrel is limited; when the rotating shaft rotates, the sliding block on the other side can generate certain centrifugal force due to the centrifugal effect to balance the centrifugal force generated by the product; if the product is lighter, the top threads on the side surfaces of some sliding block cylinders on the other side of the product can be screwed, so that the centrifugal force generated by the product can be adjusted, and the centrifugal force generated by the product can be better balanced. When a plurality of products need to be calibrated simultaneously, jackscrews on the side surfaces of all the slide block cylinders on two sides can be loosened, so that balanced centrifugal force is generated and mutually offset, and further the influence of the rotating centrifugal force on the calibration precision of the sensor can be eliminated by adding a centrifugal force self-balancing device consisting of the slide blocks, the slide block cylinders and the springs.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an isometric structural schematic view of a turntable device for sensor calibration testing according to an embodiment of the present invention;
fig. 2 is another isometric view of a turntable device for a sensor calibration test according to an embodiment of the present invention;
fig. 3 is a schematic front view of a turntable device for sensor calibration testing according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structural view of a turntable device for sensor calibration test according to an embodiment of the present invention;
FIG. 5 is an enlarged partial view of section I of FIG. 4 according to an embodiment of the present invention;
FIG. 6 is an enlarged partial view of section II of FIG. 5 according to an embodiment of the present invention;
FIG. 7 is an isometric view of a calibration assembly according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a calibration assembly according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a calibration assembly according to an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of a calibration assembly according to an embodiment of the present invention;
fig. 11 is a schematic cross-sectional structural diagram of a calibration assembly according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
A turntable device for a sensor calibration test according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 11.
Referring to fig. 1, 2, 3, 4, 5, 6, and 7, a turntable device for sensor calibration test according to an embodiment of the present invention includes a marble base 1, a calibration table base 2 fixed on an upper surface of the marble base 1, a sensor calibration device 4 fixed on the calibration table base 2, and a coaxial thermal insulation device 3, where the sensor calibration device 4 includes a first support base 5, a second support base 6, a third support base 7, and a fourth support base 8 fixed on the upper surface of the calibration table base 2, a driving motor 9 fixed on the fourth support base 8, a rotating shaft 10 connected to an output shaft of the driving motor 9, and a calibration assembly 11 connected to the rotating shaft 10, where the calibration assembly 11 is disposed inside the coaxial thermal insulation device 3.
Referring to fig. 4 to 11, the calibration assembly 11 includes a calibration rotation shaft 1101, a connection base 1102 fixed on the calibration rotation shaft 1101, an upper fixing base 1103 and a lower fixing base 1104 fixed on upper and lower sides of the connection base 1102 respectively, an upper connection plate 1105 and a lower connection plate 1106 fixed on the upper fixing base 1103 and the lower fixing base 1104 respectively, an upper centrifugal force self-balancing device 1107 located between the connection base 1102 and the upper fixing base 1103, and a lower centrifugal force self-balancing device 1108 located between the connection base 1102 and the lower fixing base 1104, where the upper centrifugal force self-balancing device 1107 and the lower centrifugal force self-balancing device 1108 each include 1 slider barrel 1109, 1 slider 1110 and 1 spring 1111 installed inside the slider barrel 1109, and a long strip screw hole 1118 used for fixing the slider 1110 is provided in the middle of the slider barrel 1109, and in a static state, one of the springs 1111 arranged in the upper centrifugal force self-balancing device 1107 and the lower centrifugal force self-balancing device 1108 is in a tensile state and the other spring 1111 arranged in a tensile state or in the upper centrifugal force self-balancing device 1107 and the lower centrifugal force self-balancing device 1108 are in a compressive state.
Referring to fig. 4 to 11, if no jackscrew is installed in the elongated screw hole 1118 to fix the sliding block 1110 in the sliding block barrel 1109, in the process that the calibration assembly 11 rotates along with the calibration rotating shaft 1101, the sliding block 1110 slides in the sliding block barrel 1109 in the direction away from the calibration rotating shaft 1101 against the acting force of the spring 1111, and then a balanced centrifugal force is generated to eliminate the influence of the rotating centrifugal force on the calibration accuracy of the sensor.
Referring to fig. 8 to 9, springs 1111 disposed in upper centrifugal force self-balancing device 1107 and lower centrifugal force self-balancing device 1108 are both located on a side of slider 1110 away from calibration rotation shaft 1101, or springs 1111 disposed in upper centrifugal force self-balancing device 1107 and lower centrifugal force self-balancing device 1108 are both located on a side of slider 1110 close to calibration rotation shaft 1101, that is, springs 1111 disposed in upper centrifugal force self-balancing device 1107 and lower centrifugal force self-balancing device 1108 are disposed on an upper side or a lower side of slider 1110, respectively, in this structural design, in a static state, one of springs 1111 disposed in upper centrifugal force self-balancing device 1107 and lower centrifugal force self-balancing device 1108 is in a tension state and the other is in a compression state; one of the springs 1111 arranged in the upper centrifugal force self-balancing device 1107 and the lower centrifugal force self-balancing device 1108 is located on the side of the sliding block 1110 away from the calibration rotating shaft 1101, and the other is located on the side of the sliding block 1110 close to the calibration rotating shaft 1101, that is, when the sliding block is in a static state, the springs 1111 arranged in the upper centrifugal force self-balancing device 1107 and the lower centrifugal force self-balancing device 1108 are both in a stretching state or a compressing state. Further, when the calibration assembly 11 rotates along with the calibration rotation axis 1101, the sliders 1110 located at two sides of the calibration rotation axis 1101 need to overcome the elastic force of the spring and the gravity of the sliders 1110 to generate a centrifugal force to drive the sliders to slide in the slider barrel 1109 in a direction away from the calibration rotation axis 1101.
Referring to fig. 4 to 11, 6 upper centrifugal force self-balancing devices 1107 are arranged between the connection seat 1102 and the upper fixing seat 1103, 6 lower centrifugal force self-balancing devices 1108 are arranged between the connection seat 1102 and the lower fixing seat 1104, the upper centrifugal force self-balancing devices 1107 and the lower centrifugal force self-balancing devices 1108 are symmetrically distributed on two sides of the calibration rotating shaft 1101, and two ends of the spring 1111 are respectively fixed to the inner wall of the slider barrel 1109 and the slider 1110.
Referring to fig. 4 to 11, each three of the upper centrifugal force self-balancing devices 1107 are a group, each three of the lower centrifugal force self-balancing devices 1108 are a group, the two groups of upper centrifugal force self-balancing devices 1107 and lower centrifugal force self-balancing devices 1108 are symmetrically arranged, and the upper centrifugal force self-balancing devices 1107 and the lower centrifugal force self-balancing devices 1108 in each group are arranged at equal intervals, so that the influence of the rotating centrifugal force on the calibration accuracy of the sensor can be eliminated as required. Referring to fig. 4 to 11, the calibration rotating shaft 1101 and the connecting seat 1102 between the two sets of upper centrifugal force self-balancing devices 1107 and the two sets of lower centrifugal force self-balancing devices 1108 are provided with flow-through holes 1112, and the flow-through holes 1112 are used for heat flow-through and gas flow-through during the rotation process.
Referring to fig. 4 to 11, the slider cylinder 1109 is provided with a long screw hole 1118 at the center thereof for fixing the slider 1110, and the spring 1111 is compressed when in a stationary state. The sliding block 1110 can be fixed on the sliding block barrel 1109 by installing jackscrews in the elongated screw holes 1118, that is, after the sliding block 1110 is fixed by adopting the jackscrews, the sliding block 1110 does not displace relative to the sliding block barrel 1109 in the process that the calibration component 11 rotates along with the rotating shaft 10; when the sliding block 1110 is not fixed by adopting a jackscrew, the sliding block 1110 can overcome the acting force of a spring to displace relative to the sliding block barrel 1109 in the process that the calibration component 11 rotates along with the rotating shaft 10; when the calibration component 11 is static, the sliding block 1110 is restored to the initial position under the action of the springs at the two ends, so that the balance of the rotating centrifugal force in the calibration process of the sensor can be realized by loosening the corresponding jackscrews according to the requirement, and the calibration precision of the sensor is improved.
Referring to fig. 4 to 11, both ends of the slider cylinder 1109 are fixed to the connection base 1102 and the upper and lower holders 1103 and 1104, respectively. For example, counter bores may be formed in the connection base 1102, the upper fixing base 1103 and the lower fixing base 1104, and then the two ends of the slider barrel 1109 are mounted in the counter bores, and after the connection base 1102, the upper fixing base 1103 and the lower fixing base 1104 are fixed by bolts, the two ends of the slider barrel 1109 are fixed to the connection base 1102, the upper fixing base 1103 and the lower fixing base 1104, respectively. The upper transfer plate 1105 and the lower transfer plate 1106 are both provided with fixing holes 1113 for installing tape-type calibration test sensors.
Referring to fig. 4 to 11, 6 slider barrels 1109, 6 springs 1111 and 6 sliders 1110 may be respectively disposed between the connecting base and the upper fixing base and between the connecting base and the lower fixing base, and each of 1 slider barrel 1109, 1 spring 1111 and 1 slider 1110 is mutually matched to form a centrifugal force self-balancing device, and the corresponding jackscrew may be selectively loosened to realize the corresponding centrifugal force self-balancing by symmetrically disposing 6 centrifugal force self-balancing devices, that is, by symmetrically disposing a plurality of centrifugal force self-balancing devices, the corresponding centrifugal force self-balancing device may be opened as needed to eliminate the influence of the rotating centrifugal force on the calibration accuracy of the sensor, thereby further improving the calibration accuracy of the sensor.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, the calibration rotating shaft 1101 and the rotating shaft 10 are connected by a coupling 1114, two ends of the calibration rotating shaft 1101 are respectively installed on the first supporting seat 5 and the second supporting seat 6 by a bearing 1115, and the coaxial heat preservation device 3 is fixed on the calibration table base 2 by a fixing support 12. The coaxial heat preservation device 3 comprises a lower outer shell 301 fixed on a calibration table base by a fixing support 12, an upper outer shell 305 mounted on the lower outer shell 301 by an upper end 302 and a lower end 303 matched with a shaft sleeve 304, a lower inner shell 306 and an upper inner shell 307 positioned inside the lower outer shell 301 and the upper outer shell 305, and a handle 308 fixed on the upper outer shell 305, wherein one sides of the upper outer shell 305 and the lower outer shell 301 are hinged by hinges, the upper outer shell 305 and the lower outer shell 301 are fixed by a buckle 309, and the upper outer shell 305 can rotate relative to the lower outer shell 301 by the handle 308 after the buckle 309 is released, so that the coaxial heat preservation device 3 is opened and closed.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, a shaft sleeve 304 is fixed on a lower housing 301 by a lower end 303, the lower end 303 is fixed on the lower housing 301 by screws, an upper end 302 is fixed on an upper housing 305 by screws, and an calibrated rotating shaft 1101 passes through the shaft sleeve 304 and is installed. The adoption top end, the mounting means of lower extreme head cooperation axle sleeve both can realize demarcating the heat preservation of subassembly 11, have simultaneously can not influence to demarcate subassembly 11 and rotate along with pivot 10, do not influence opening and shutting of coaxial heat preservation device 3 yet.
In an example, the lower inner shell 306 and the upper inner shell 307 are provided with heat flow holes, and the outer surfaces of the lower inner shell 306 and the upper inner shell 307 are provided with non-metal heating tapes, so that heat generated by the heating tapes of the coaxial heat preservation device 3 can be conducted to a sensor to be calibrated, and the non-metal heating tapes do not generate magnetic field interference to influence the calibration accuracy of the sensor.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, the connection seat 1102 is fixed on the calibration rotation shaft 1101 by a connection block 1116, the bearing 1115 is respectively mounted on the first support seat 5, the second support seat 6 and the third support seat 7 by an end cap 1117, and the end cap 1117 is respectively fixed on the first support seat 5, the second support seat 6 and the third support seat 7 by screws.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, an outer adapter shaft 13 is disposed at a left end of the calibration rotating shaft 1101, and a conductive slip ring 14 and a coaxial adapter flange 15 are mounted on the outer adapter shaft 13. The driving motor 9 is fixed on the fourth supporting seat 8 by bolts, the rotating shaft 10 is connected with an output shaft of the driving motor 9 by a transmission shaft connector 16, and the upper fixing seat 1102 and the lower fixing seat 1103 are respectively fixed on two sides of the connecting seat 1102 by bolts.
The embodiment of the invention provides a calibration table base of a turntable device for sensor calibration test, which is arranged on marble foundation stones, wherein the marble foundation stones are influenced by ambient temperature to have extremely small deformation, so that the influence of the ambient temperature on the foundation stones is avoided, and the influence of the ambient temperature on the calibration precision of a sensor is reduced; the jackscrew on the side surface of the sliding block barrel on one side of the sensor product is screwed, so that the sliding block is fixed at the middle position in the sliding block barrel, and the sliding of the sliding block in the sliding block barrel is limited. When the rotating shaft rotates, the sliding block on the other side can generate certain centrifugal force due to the centrifugal effect to balance the centrifugal force generated by the product. If the product is lighter, the top threads on the side surfaces of some sliding block cylinders on the other side of the product can be screwed, so that the centrifugal force generated by the product can be adjusted, and the centrifugal force generated by the product can be better balanced. When a plurality of products need to be calibrated simultaneously, jackscrews on the side faces of the sliding block cylinders on two sides can be loosened, so that balanced centrifugal force is generated and mutually offset, and further the influence of the rotating centrifugal force on the calibration precision of the sensor can be eliminated by adding a centrifugal force self-balancing device consisting of the sliding blocks, the sliding block cylinders and the springs.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass these modifications and variations.
Claims (7)
1. A turntable device for sensor calibration test is characterized by comprising a marble base, a calibration table base fixed on the upper surface of the marble base, a sensor calibration device fixed on the calibration table base and a coaxial heat preservation device, the sensor calibration device comprises a first supporting seat, a second supporting seat, a third supporting seat and a fourth supporting seat which are fixed on the upper surface of the calibration table base, a driving motor fixed on the fourth supporting seat, a rotating shaft connected with an output shaft of the driving motor, and a calibration component connected with the rotating shaft, wherein, the calibration component comprises a calibration rotating shaft, a connecting seat fixed on the calibration rotating shaft, an upper fixed seat and a lower fixed seat respectively fixed on the upper side and the lower side of the connecting seat, an upper connection plate and a lower connection plate respectively fixed on the upper fixed seat and the lower fixed seat, an upper centrifugal force self-balancing device positioned between the connecting seat and the upper fixed seat, and a lower centrifugal force self-balancing device positioned between the connecting seat and the lower fixed seat, the upper centrifugal force self-balancing device and the lower centrifugal force self-balancing device respectively comprise 1 sliding block barrel, 1 sliding block and 1 spring which are arranged in the sliding block barrel, the middle part of the sliding block barrel is provided with a long strip-shaped screw hole for fixing the sliding block, when the device is in a static state, one of the springs arranged in the upper centrifugal force self-balancing device and the lower centrifugal force self-balancing device is in a stretching state, and the other spring is in a compression state, or the springs arranged in the upper centrifugal force self-balancing device and the lower centrifugal force self-balancing device are both in a stretching state or a compression state; the springs arranged in the upper centrifugal force self-balancing device and the lower centrifugal force self-balancing device are both positioned on one side, away from the calibration rotating shaft, of the sliding block, or the springs arranged in the upper centrifugal force self-balancing device and the lower centrifugal force self-balancing device are both positioned on one side, close to the calibration rotating shaft, of the sliding block; or one of the springs arranged in the upper centrifugal force self-balancing device and the lower centrifugal force self-balancing device is positioned on one side of the sliding block far away from the calibration rotating shaft, and the other spring is positioned on one side of the sliding block close to the calibration rotating shaft; the automatic calibration device is characterized in that 6 upper centrifugal force self-balancing devices are arranged between the connecting seat and the upper fixing seat, 6 lower centrifugal force self-balancing devices are arranged between the connecting seat and the lower fixing seat, the upper centrifugal force self-balancing devices and the lower centrifugal force self-balancing devices are symmetrically distributed on two sides of the calibration rotating shaft, and two ends of the spring are respectively fixed on the inner wall of the sliding block barrel and the sliding block.
2. The turntable device for sensor calibration test according to claim 1, wherein the calibration rotating shaft is connected to the rotating shaft by a coupling, two ends of the calibration rotating shaft are respectively mounted on the first supporting seat and the second supporting seat by bearings, and the coaxial heat preservation device is fixed on the calibration table base by a fixing support.
3. The turntable device for sensor calibration test according to claim 2, wherein the coaxial thermal insulation device comprises a lower outer shell fixed on the calibration table base by the fixing support, an upper outer shell mounted on the lower outer shell by matching an upper end and a lower end with a shaft sleeve, a lower inner shell and an upper inner shell located inside the lower outer shell and the upper outer shell, and a handle fixed on the upper outer shell, wherein one side of the upper outer shell and one side of the lower outer shell are hinged by a hinge, and the upper outer shell and the lower outer shell are fixed by a buckle.
4. The turntable device for sensor calibration testing according to claim 3, wherein the shaft sleeve is fixed to the lower housing by a lower end head, the lower end head is fixed to the lower housing by a screw, the upper end head is fixed to the upper housing by a screw, and the calibration rotation shaft passes through the shaft sleeve.
5. The turntable device for sensor calibration testing according to claim 3, wherein the connecting seat is fixed on the calibration rotation shaft by a connecting block, the bearing is mounted on the first supporting seat, the second supporting seat and the third supporting seat by end caps respectively, and the end caps are fixed on the first supporting seat, the second supporting seat and the third supporting seat by screws respectively.
6. The turntable device for sensor calibration test as claimed in claim 5, wherein an external adapter shaft is provided at a left end of the calibration rotation shaft, and a conductive slip ring and a coaxial adapter flange are mounted on the external adapter shaft.
7. The turntable device for sensor calibration testing according to claim 6, wherein the driving motor is fixed on the fourth supporting seat by bolts, the rotating shaft is connected with an output shaft of the driving motor by a transmission shaft connector, and the upper fixing seat, the lower fixing seat and the connecting seat are fixed by bolts.
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| CN202111593201.3A CN114353851B (en) | 2021-12-23 | 2021-12-23 | Turntable device for sensor calibration test |
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| CN202111593201.3A CN114353851B (en) | 2021-12-23 | 2021-12-23 | Turntable device for sensor calibration test |
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| CN112615504B (en) * | 2021-01-12 | 2021-11-19 | 深圳欧拓奇科技有限公司 | Motor of automatic levelling when unbalanced |
| CN113404843A (en) * | 2021-05-31 | 2021-09-17 | 常州工学院 | Self-adaptive dynamic vibration reduction gear |
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2021
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| JP2006050801A (en) * | 2004-08-05 | 2006-02-16 | Takashi Mita | Vibrator |
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