CN214893848U - Any point calibration device of stacked miniature force transducer - Google Patents
Any point calibration device of stacked miniature force transducer Download PDFInfo
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- CN214893848U CN214893848U CN202121603569.9U CN202121603569U CN214893848U CN 214893848 U CN214893848 U CN 214893848U CN 202121603569 U CN202121603569 U CN 202121603569U CN 214893848 U CN214893848 U CN 214893848U
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Abstract
An arbitrary point calibration device of a superposed micro force measuring sensor comprises a force application lever mechanism, a superposed force measuring mechanism and a screw rod adjusting mechanism; the force application lever mechanism is provided with a floating weight and a tray, the position of the floating weight is adjusted or a weight is loaded in the tray to generate a required force value, the position of the force measurement mechanism is adjusted through an adjusting screw rod to enable the generated force value to be loaded on the micro force measurement sensor, and the force measurement mechanism effectively realizes the calibration of the micro force measurement sensor at any force value point through the comparison with the high-precision force measurement sensor. The screw rod adjusting mechanism of the device can adjust the height of the force measuring mechanism so as to enable the lever mechanism to work at the most effective position; the device can replace high-precision force transducers with various specifications and can also realize the calibration of miniature force transducers with various specifications. The device can not only realize the calibration of the pressure type micro force measuring sensor, but also realize the calibration of the tension type micro force measuring sensor if one end of the first connecting rod force application shaft is connected with the micro force measuring sensor.
Description
Technical Field
The utility model relates to a small power value is markd and measurement test technical field, in particular to little force cell sensor random point calibration device of stack formula.
Background
The miniature force transducer cannot achieve high precision due to small size, and is mainly used in occasions with small measurement space, small measured force value and high precision requirement. In recent years, besides new materials, nanotechnology and other related industries, the tobacco industry has more and more demands on miniature force sensors, and particularly in some cigarette and filter stick hardness measuring devices, the miniature force sensors serve as standard force measuring devices and play a key role in unifying the quantity values of the cigarette and filter stick hardness measuring devices. However, in practical use, it is found that due to the limitation of the calibration mode of the micro force transducer, a large difference occurs when a plurality of micro force transducers measure, and the same micro force transducer is calibrated at different times.
The Chinese invention patent (application date of 201720213411.8: 2017-03-07) discloses a high-precision equal-arm lever type small-force-value standard device, which can realize the verification work of small force values, but inevitably introduces friction force, and the friction force can generate larger influence on the calibration of a micro force sensor and can only verify certain force value points.
The Chinese invention patent (application date of 201210418127.6: 2012-10-26) discloses an air-float dead weight type micro load cell calibration device, which can realize the calibration and calibration of the micro load cell and has the advantages of no friction and no noise. However, in practical use, it is found that due to the influence of the gravity of the air bearing, the force value smaller than the gravity of the air bearing except the zero point cannot be calibrated, and due to the fact that compressed air is used as a lubricant, air flows out of the upper portion and the lower portion of the air bearing, and air flow can be loaded on the micro force measuring sensor in the calibration and calibration processes, the calibration result is influenced, and different pressure influences of different media are different.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above problem, provide a miniature force cell sensor random point calibration device of stack formula. The device can calibrate and calibrate at any point in the measuring range of the miniature force transducer by comparing with the large-size high-precision force transducer and applying force by the lever, and the friction force is not introduced in the calibrating process, so the operation is simple and convenient.
The purpose of the utility model is realized through the following technical scheme:
an arbitrary point calibration device of a superposed micro force measuring sensor comprises a force application lever mechanism, a superposed force measuring mechanism and a screw rod adjusting mechanism;
the force application lever mechanism comprises an L-shaped base, a supporting seat, an equal-arm lever girder, a tray, a sliding weight, a guide cross beam, a first connecting rod, a second connecting rod and a force application shaft, wherein the supporting seat is fixed on the bottom surface of the L-shaped base;
the superposed force measuring mechanism sequentially comprises a micro force measuring sensor, a micro force measuring sensor placing platform, a high-precision force measuring sensor and a high-precision force measuring sensor placing platform from top to bottom, and the axis of a stress shaft of each force measuring sensor and the central axis of each placing platform are superposed with the axis of the vertical guide hole;
the lead screw adjusting mechanism comprises a lead screw base, a lead screw sliding platform, a lead screw, a limiting plate on the lead screw, a lead screw locking lock and a lead screw hand wheel, wherein the lead screw sliding platform can move between the lead screw base and the limiting plate on the lead screw, the lead screw sliding platform is in butt joint with one side of the high-precision force transducer placing platform and clamped together, the upper surface of the lead screw sliding platform is parallel to the upper surface of the high-precision force transducer placing platform, the high-low position of the lead screw sliding platform can be adjusted by rotating the lead screw hand wheel, and the position of the lead screw sliding platform can be locked through the lead screw locking lock so that the high-precision force transducer placing platform is fixed at a certain height.
The utility model discloses in, first connecting rod is T shape structure, and first connecting rod and cylindrical application of force axle structure as an organic whole promptly.
The supporting seat is of a triangular structure, a main beam mounting groove is formed in the top of the supporting seat, the equal-arm lever main beam is arranged in the main beam mounting groove in the top of the supporting seat through the supporting shaft, the rotation angle of the equal-arm lever main beam can be limited through the groove, and the first connecting rod force application shaft is prevented from being separated from the vertical guide hole due to the fact that the rotation angle is two times larger.
The second connecting rod is hinged with the left end of the main beam of the equal-arm lever through a parallel shaft, and the parallel shaft is parallel to the supporting shaft of the main beam of the equal-arm lever.
The second connecting rod is connected with the first connecting rod through a hinge shaft.
The mechanism of the utility model lies in: the force application lever mechanism is provided with two floating codes and two trays, the position of the floating codes is adjusted or weights are loaded in the trays to generate a required force value, the position of the superposed force measuring mechanism is adjusted through the adjusting screw rod adjusting mechanism to enable the generated force value to be loaded on the miniature force measuring sensor, and the superposed force measuring mechanism effectively realizes the calibration of the miniature force measuring sensor at any force value point through the comparison with a high-precision force measuring sensor.
The more specific description of the utility model is as follows:
the utility model mainly comprises a force application lever mechanism, a superposed force measuring mechanism and a screw rod adjusting mechanism;
the force application lever mechanism is provided with a base, an equal-arm lever main beam, two trays, two sliding blocks, a supporting rod, a supporting shaft, a guide cross beam, a guide hole, a first connecting rod and a second connecting rod. The base is L-shaped, a support rod is arranged on the bottom surface of the base, a guide cross beam is arranged on the vertical surface of the base, and a guide hole is formed in the guide cross beam; the top of the supporting rod is provided with a supporting shaft, the middle part of the main beam of the equal-arm lever is connected with the supporting rod through the supporting shaft, the main beam of the equal-arm lever can rotate around the supporting shaft, two sides of the main beam of the equal-arm lever are respectively provided with a tray and a sliding weight, the two trays are equal in distance from the supporting shaft, and the two sliding weights can move along the main beam of the equal-arm lever; one end of a second connecting rod is connected with one end of the equal-arm lever beam, the second connecting rod can rotate around a connecting shaft of the second connecting rod and the equal-arm lever main beam, the other end of the second connecting rod is connected with the first connecting rod, the second connecting rod can rotate around a connecting shaft of the second connecting rod and the first connecting rod, the lower end of the first connecting rod is a cylinder in a T shape, and the cylinder penetrates through the guide hole and is coaxial with the guide hole.
The superposed force measuring mechanism is provided with a miniature force measuring sensor, a miniature force measuring sensor placing platform, a high-precision force measuring sensor and a high-precision force measuring sensor placing platform. The high-precision force transducer is arranged above the high-precision force transducer placing platform, the compression surface is vertically upward, the miniature force transducer placing platform is arranged above the high-precision force transducer stress shaft, the axis center of the miniature force transducer placing platform is coincided with the axis of the high-precision force transducer stress shaft, the miniature force transducer to be calibrated is fixed at the center of the miniature force transducer placing platform, and the axis of the miniature force transducer stress shaft is coincided with the central axis of the miniature force transducer placing platform and the guide hole.
The screw rod adjusting mechanism is provided with a screw rod base, a screw rod sliding platform, a screw rod upper limiting plate, a screw rod locking lock and a screw rod hand wheel. The lead screw sliding platform can slide between the lead screw base and the lead screw upper limiting plate, the lead screw sliding platform is installed in a butt joint mode with one side of the high-precision force measuring sensor placing platform, the lead screw sliding platform is parallel to the upper surface of the high-precision force measuring sensor placing platform, the height position of the lead screw sliding platform can be adjusted by rotating a lead screw hand wheel, and the position of the lead screw sliding platform can be locked through a lead screw locking lock so that the high-precision force measuring sensor placing platform is fixed at a certain height.
The utility model has the outstanding characteristics that: the device can effectively realize the calibration of the miniature force transducer at any force value point by comparing with a high-precision force transducer; the screw rod adjusting mechanism of the device can adjust the height of the high-precision force measuring sensor placing platform, so as to adjust the height of the miniature force measuring sensor, and the force application lever mechanism can work at the most effective position; the device can replace high-precision force transducers with various specifications and can also realize the calibration of miniature force transducers with various specifications; in addition, the device can not only realize the calibration of the pressure type micro force measuring sensor, but also realize the calibration of the tension type micro force measuring sensor if one end of the first connecting rod force application shaft is connected with the micro force measuring sensor.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the calibration device of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a schematic view of a first linkage;
in fig. 1:
1. the device comprises a force application lever mechanism, 1-1. L-shaped bases, 1-2. equiarm lever main beams, 1-3. trays, 1-4. loose yards, 1-5. supporting seats, 1-5-1. grooves, 1-6. supporting shafts, 1-7. guide cross beams, 1-7-1. guide holes, 1-8. second connecting rods, 1-9. first connecting rods and 1-9-1. force application shafts, wherein the force application lever mechanism comprises a first lever, a second lever, a first connecting rod, a second connecting rod, a first connecting rod, a second connecting rod, a first connecting rod, a second connecting rod, a first connecting rod, a second connecting rod and a force application shaft;
2. 2-1, a miniature force measuring sensor, 2-2, a miniature force measuring sensor placing platform, 2-3, a high-precision force measuring sensor and 2-4, a high-precision force measuring sensor placing platform;
3. the screw rod adjusting mechanism comprises, by weight, 3-1 parts of a screw rod base, 3-2 parts of a screw rod sliding platform, 3-3 parts of a screw rod, 3-4 parts of an upper screw rod limiting plate, 3-5 parts of a screw rod locking lock and 3-6 parts of a screw rod hand wheel.
The upper, lower, left and right are referred to herein with reference to the position shown in FIG. 1.
Detailed Description
The utility model discloses the following further detailed description that combines together the figure:
as shown in fig. 1-3: an arbitrary point calibration device of a superposed micro force measuring sensor comprises a force application lever mechanism 1, a superposed force measuring mechanism 2 and a screw rod adjusting mechanism 3;
the force application lever mechanism 1 comprises an L-shaped base 1-1, a supporting seat 1-5, an equal-arm lever main beam 1-2, a tray 1-3, a rider 1-4, a guide cross beam 1-7, a second connecting rod 1-8, a second connecting rod 1-9 and a force application shaft 1-9-1, wherein the supporting seat 1-5 is fixed on the bottom surface of the L-shaped base 1-1, the equal-arm lever main beam 1-2 is arranged on the supporting seat 1-5 through a supporting shaft 1-6, the tray 1-3 and the rider 1-4 are respectively arranged on two sides of the equal-arm lever main beam 1-2, the guide cross beam 1-7 is fixed on the vertical surface of the L-shaped base 1-1 in a cantilever structure and is positioned right below the left end of the equal-arm lever main beam, a vertical guide hole 1-7-1 is formed in the guide cross beam 1-7, the left end of the main beam 1-2 of the equal-arm lever is hinged with a second connecting rod 1-8 and a first connecting rod 1-9, the lower end of the first connecting rod is provided with a cylindrical force application shaft 1-9-1, and the cylindrical force application shaft is inserted into a vertical guide hole 1-7-1 formed in a guide cross beam 1-7;
the superposed force measuring mechanism 2 sequentially comprises a micro force measuring sensor 2-1, a micro force measuring sensor placing platform 2-2, a high-precision force measuring sensor 2-3 and a high-precision force measuring sensor placing platform 2-4 from top to bottom, and the axes of the stress shafts of the force measuring sensors and the central axis of each placing platform are superposed with the axes 1-7-1 of the vertical guide holes;
the lead screw adjusting mechanism 3 comprises a lead screw base 3-1, a lead screw sliding platform 3-2, a lead screw 3-3, a lead screw upper limiting plate 3-4, a lead screw locking lock 3-5 and a lead screw hand wheel 3-6, wherein the lead screw sliding platform 3-2 can move between the lead screw base 3-1 and the lead screw upper limiting plate 3-4, the lead screw sliding platform 3-2 is in butt joint and clamping with one side of the high-precision force transducer placing platform 2-4, the upper surface of the lead screw sliding platform is parallel, the high-low position of the lead screw sliding platform 3-2 can be adjusted by rotating the lead screw hand wheel 3-6, and the position of the lead screw sliding platform can be locked by the lead screw locking lock 3-5 so that the high-precision force transducer placing platform 2-4 is fixed at a certain height.
As shown in fig. 3: the first connecting rod 1-9 is of a T-shaped structure, namely the first connecting rod 1-9 and the cylindrical force application shaft 1-9-1 are of an integral structure.
The supporting seat 1-5 is of a triangular structure, the top of the supporting seat is provided with a main beam mounting groove 1-5-1, the main beam 1-2 of the equal-arm lever is arranged in the main beam mounting groove 1-5-1 at the top of the supporting seat through a supporting shaft 1-6, the arrangement of the groove can limit the rotation angle of the main beam 1-2 of the equal-arm lever, and the first connecting rod force application shaft 1-9-1 is prevented from being separated from the vertical guide hole 1-7-1 due to the large rotation angle.
The second connecting rods 1-8 are hinged with the left ends of the main beams 1-2 of the equal-arm levers through parallel shafts, the parallel shafts are parallel to the supporting shafts 1-6 of the main beams of the equal-arm levers, and the second connecting rods 1-9 are connected with the first connecting rods 1-8 through hinge shafts. The equal-arm lever main beam 1-2 transmits a force value through a second connecting rod 1-8 and an equal-arm lever main beam connecting shaft, then transmits the force value to a first connecting rod 1-9 through the second connecting rod 1-8, and finally acts on the micro force measuring sensor 2-1.
The utility model discloses a demarcate principle and operation process as follows:
before the micro force transducer 2-1 is calibrated, the screw rod hand wheel 3-6 is rotated to adjust the screw rod sliding platform 3-2, so that the high-precision force transducer placing platform 2-4 moves downwards to be far away from the guide cross beam 1-7. Selecting a proper high-precision force measuring sensor 2-3 to be installed on a high-precision force measuring sensor placing platform 2-4, and keeping the stress shaft of the high-precision force measuring sensor to be coincided with the axis of the guide hole 1-7-1; placing and installing a micro force transducer placing platform 2-2 on a high-precision force transducer 2-3, fixing a micro force transducer 2-1 on the micro force transducer placing platform 2-2, keeping a stress shaft of the high-precision force transducer, the center of the micro force transducer placing platform and the stress shaft of the micro force transducer coincident with the axis of a guide hole, recording an indication value of the high-precision force transducer 2-3 or carrying out zero clearing operation on the indication value, and calibrating a zero point of the micro force transducer 2-1; one end of the first connecting rod force application shaft 1-9-1 generates a downward force value by adjusting the balance state of the lever through adjusting the two sliding blocks 1-4, and then the screw rod hand wheel 3-6 is rotated to enable the micro force transducer 2-1 to be in contact with the first connecting rod force application shaft 1-9-1 and enable the lever to be in a horizontal state. Finally, adjusting the two sliding blocks 1-4 can enable the first connecting rod force application shaft 1-9-1 to generate a smaller force value for the micro force measuring sensor 2-1, weights are placed in the two trays 1-3 to enable the first connecting rod force application shaft 1-9-1 to generate a larger force value for the micro force measuring sensor 2-1, the force application lever mechanism 1 is adjusted according to calibration requirements, the indication value of the high-precision force measuring sensor 2-3 is read, a required force value is generated, and any point force value calibration operation of the micro force measuring sensor 2-1 is carried out.
Claims (6)
1. The utility model provides a little force cell sensor arbitrary point calibration device of stack formula which characterized in that: the device comprises a force application lever mechanism, a superposed force measuring mechanism and a screw rod adjusting mechanism;
the force application lever mechanism comprises an L-shaped base, a supporting seat, an equal-arm lever girder, a tray, a sliding weight, a guide cross beam, a first connecting rod, a second connecting rod and a force application shaft, wherein the supporting seat is fixed on the bottom surface of the L-shaped base;
the superposed force measuring mechanism sequentially comprises a micro force measuring sensor, a micro force measuring sensor placing platform, a high-precision force measuring sensor and a high-precision force measuring sensor placing platform from top to bottom, and the axis of a stress shaft of each force measuring sensor and the central axis of each placing platform are superposed with the axis of the vertical guide hole;
the screw rod adjusting mechanism comprises a screw rod base, a screw rod sliding platform, a screw rod upper limiting plate, a screw rod locking lock and a screw rod hand wheel.
2. The device for calibrating any point of a stacked micro load cell according to claim 1, wherein: the first connecting rod is of a T-shaped structure, namely the first connecting rod and the cylindrical force application shaft are of an integral structure.
3. The device for calibrating any point of a stacked micro load cell according to claim 1, wherein: the supporting seat is of a triangular structure, a main beam mounting groove is formed in the top of the supporting seat, the equal-arm lever main beam is arranged in the main beam mounting groove in the top of the supporting seat through the supporting shaft, the rotation angle of the equal-arm lever main beam can be limited through the groove, and the first connecting rod force application shaft is prevented from being separated from the vertical guide hole due to the fact that the rotation angle is two times larger.
4. The device for calibrating any point of a stacked micro load cell according to claim 1, wherein: the second connecting rod is hinged with the left end of the main beam of the equal-arm lever through a parallel shaft, and the parallel shaft is parallel to the supporting shaft of the main beam of the equal-arm lever.
5. The device for calibrating any point of a stacked micro load cell according to claim 1, wherein: the second connecting rod is connected with the first connecting rod through a hinge shaft.
6. The device for calibrating any point of a stacked micro load cell according to claim 1, wherein: the lead screw sliding platform can be displaced between a lead screw base and a limiting plate on a lead screw, the lead screw sliding platform is in butt joint with and clamped with one side of the high-precision force transducer placing platform, the upper surface of the lead screw sliding platform is parallel to the upper surface of the high-precision force transducer placing platform, the lead screw hand wheel is rotated to adjust the height position of the lead screw sliding platform, and the position of the lead screw sliding platform can be locked through a lead screw locking lock so that the high-precision force transducer placing platform is fixed at a certain height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121603569.9U CN214893848U (en) | 2021-07-15 | 2021-07-15 | Any point calibration device of stacked miniature force transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121603569.9U CN214893848U (en) | 2021-07-15 | 2021-07-15 | Any point calibration device of stacked miniature force transducer |
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| Publication Number | Publication Date |
|---|---|
| CN214893848U true CN214893848U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121603569.9U Active CN214893848U (en) | 2021-07-15 | 2021-07-15 | Any point calibration device of stacked miniature force transducer |
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| CN (1) | CN214893848U (en) |
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- 2021-07-15 CN CN202121603569.9U patent/CN214893848U/en active Active
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