阅读说明：本技术 一种快速测量电容器多种尺寸的数显卡尺 (Digital display caliper for rapidly measuring various sizes of capacitor ) 是由 王德全 文静 王志雄 宁昆 于 2021-07-26 设计创作，主要内容包括：一种快速测量电容器多种尺寸的数显卡尺,涉量具技术领域,解决现有数显卡尺不适于批量检测电容器尺寸的技术不足,技术方案包括：主尺、尺框、圆形承台机构、第一测距传感器组件、副尺、纵向测杆、束腰测砧组件、第二测距传感器组件、容栅传感器组件、处理器和显示器。本发明有益效果在于：通过圆形承台机构和主尺量爪夹持被测电容器,通过主尺与副尺测量其高度及束腰部高度,通过处于其外围的第一测距传感器组件测量其直径,通过对应滑动连接在纵向测杆两端的束腰测砧组件夹持其束腰部,通过第二测距传感器组件测量其束腰部的直径,通过处理器得出被测电容器各种尺寸的数值并通过显示器显示,实现一次测量电容器多种尺寸的目的,检测效率高。(The utility model provides a digital display slide caliper rule of multiple size of rapid survey condenser, relates to measuring tool technical field, solves current digital display slide caliper rule and is not suitable for the technique of batch detection condenser size not enough, and technical scheme includes: the measuring instrument comprises a main scale, a scale frame, a circular bearing platform mechanism, a first distance measuring sensor assembly, an auxiliary scale, a longitudinal measuring rod, a girdling anvil measuring assembly, a second distance measuring sensor assembly, a capacitive grating sensor assembly, a processor and a display. The invention has the beneficial effects that: through circular cushion cap mechanism and main scale measuring jaw centre gripping by survey capacitor, measure its height and beam waist portion height through main scale and auxiliary ruler, measure its diameter through being in its outlying first range sensor subassembly, through corresponding sliding connection at its beam waist survey anvil subassembly centre gripping its beam waist portion at vertical measuring staff both ends, measure its diameter of restrainting the waist through second range sensor subassembly, the numerical value that reachs by survey capacitor various sizes through the treater shows through the display, realize the purpose of once measuring multiple size of capacitor, detection efficiency is high.)

1. A digital display caliper for rapidly measuring various sizes of capacitors comprises:

the upper end of the main scale (1) is horizontally and transversely provided with a main scale measuring jaw (12) vertical to the scale body;

the ruler frame (2) is connected to the main ruler (1) in a sliding mode, and a ruler frame measuring jaw component which is matched with the main ruler measuring jaw (12) to clamp a capacitor to be measured is arranged on the ruler frame;

it is characterized in that the ruler frame measuring jaw component comprises:

the circular bearing platform mechanism (21) is horizontally and fixedly connected to one side of the upper end of the ruler frame (2), the transverse diameter of the circular bearing platform mechanism corresponds to the extending direction of the main ruler measuring jaw (12), and the circular bearing platform mechanism is used for bearing the end face of the capacitor, which is back to the waist restraining part of the capacitor, and limiting and fixing the capacitor at the middle position of the capacitor;

the first distance measuring sensor assemblies (22) are arranged on the circular bearing platform mechanism (21), are uniformly distributed on the periphery of the measured capacitor and are used for measuring the distance between the first distance measuring sensor assemblies and the outer wall of the measured capacitor and converting the distance into a measuring electric signal;

the digital display caliper further comprises:

the auxiliary ruler (3) is connected to the ruler frame (2) in a sliding mode, is correspondingly positioned on one side, back to the main ruler measuring jaw (12), of the main ruler (1), is horizontally and longitudinally provided with a longitudinal measuring rod (4) corresponding to the upper end of the main ruler measuring jaw (12), and the main ruler measuring jaw (12) is positioned on the perpendicular bisector of the longitudinal measuring rod (4);

the two girdling anvil components (5) are correspondingly horizontally and transversely connected to two ends of the longitudinal measuring rod (4) in a sliding manner, extend towards one side of the main ruler measuring jaw (12), and are used for moving oppositely along the longitudinal measuring rod (4) to clamp the girdling part of the capacitor when the upper end of the auxiliary ruler (3) moves to one side of the girdling part of the capacitor to be measured;

the second distance measuring sensor assembly (6) is arranged on the beam waist measuring anvil assembly (5) and is used for measuring the distance between the beam waist measuring anvil assemblies (5) clamped at the two sides of the beam waist of the capacitor to be measured and converting the distance into a measuring electric signal;

the capacitive grating sensor component (7) is arranged among the main scale (1), the auxiliary scale (3) and the scale frame (2) and is used for measuring the displacement of the main scale (1) and the auxiliary scale (3) relative to the scale frame (2) and converting the displacement into a measuring electric signal;

the processor (101) is arranged in the ruler frame (2), is electrically connected with the first distance measuring sensor assembly (22), the second distance measuring sensor assembly (6) and the capacitive grating sensor assembly (7), and is used for receiving and processing measuring electric signals sent by the sensor assemblies so as to calculate the diameter of the measured capacitor, the diameter of the waist of the capacitor bundle, the height of the capacitor and the height of the waist of the capacitor bundle, and calculate the depth of the waist of the capacitor bundle;

and the display (8) is arranged on the ruler frame (2) and is electrically connected with the processor (101) through a display circuit so as to display the measurement result.

2. The digital caliper for rapidly measuring various sizes of capacitors as claimed in claim 1, wherein the circular bearing platform mechanism (21) comprises:

the round pedestal (211) is horizontally and fixedly connected to one side of the upper end of the ruler frame (2), the upper end surface of the round pedestal is flush with the upper end surface of the ruler frame (2), the diameter of the round pedestal is larger than that of the largest capacitor to be tested, and at least three limiting guide grooves (212) are uniformly distributed in the radius direction of the round pedestal;

the limiting clamping rods (213) are movably inserted into the limiting guide grooves (212) in a one-to-one correspondence manner, and the upper end parts of the limiting clamping rods vertically extend out of the upper end surface of the circular pedestal (211) so as to clamp and fix the tested capacitor on the circular pedestal (211) under the guidance of the limiting guide grooves (212) and enable the tested capacitor and the round pedestal to be positioned on the same axis;

circular drive seat (214), rotate coaxially and connect under circular pedestal (211), the equipartition has arc drive groove (215) that the number is the same with spacing guide way (212) on it, the lower tip one-to-one swing joint of spacing centre gripping pole (213) in arc drive groove (215) to twist soon at the external force circular drive seat (214) in-process drives spacing centre gripping pole (213) along spacing guide way (212) synchronous phase or dorsad removal in order to centre gripping or unclamp the capacitor under test through arc drive groove (215).

3. The digital display caliper for rapidly measuring various sizes of capacitors as claimed in claim 2, wherein the circular driving seat (214) has anti-slip threads (219) uniformly distributed on the annular outer wall thereof for facilitating the screwing of a user.

4. The digital display caliper for rapidly measuring various sizes of capacitors as claimed in claim 2, wherein a self-clamping tension spring (220) for driving the limiting clamping rod (213) to automatically clamp the capacitor to be measured is arranged between the circular pedestal (211) and the circular driving seat (214).

5. The digital caliper for rapidly measuring various sizes of capacitors as claimed in claim 1, wherein the first distance measuring sensor assembly (22) comprises:

the measuring columns (221) are vertically and uniformly distributed at the edge of the upper end surface of the circular bearing platform mechanism (21), and the height of the measuring columns is not more than the height of the waist of the minimum capacitor bundle to be measured;

the first distance measuring sensors (222) are respectively and fixedly arranged on the upper parts of the measuring columns (221) facing to one side of the axis of the circular bearing platform mechanism (21) correspondingly and are used for transmitting detection signals to the side wall of the measured capacitor and receiving reflection signals, and the first distance measuring sensors are one of laser distance measuring sensors, infrared distance measuring sensors, ultrasonic distance measuring sensors or radar distance measuring sensors.

6. The digital caliper for rapidly measuring various sizes of capacitors as claimed in claim 1, wherein the second distance measuring sensor assembly (6) comprises:

and the second distance measuring sensor (61) is arranged on one side of the beam waist measuring anvil component (5) facing to one side of the main scale measuring jaw (12), and is correspondingly positioned outside a gap between the main scale (1) and the auxiliary scale (3) so as to transmit a detection signal to the other beam waist measuring anvil component (5) through the gap and receive a reflection signal, and the second distance measuring sensor is one of a laser distance measuring sensor, an infrared distance measuring sensor, an ultrasonic distance measuring sensor or a radar distance measuring sensor.

7. The digital caliper for rapidly measuring various sizes of capacitors as claimed in claim 1, wherein the capacitive sensor assembly (7) comprises:

the first fixed grid (71) is vertically arranged on the side wall of the main scale (1) on one side, facing the main scale measuring jaw (12), of the scale body;

the first movable grid (72) is vertically arranged on the side wall, corresponding to one side of the first fixed grid (71), of the first slot (23) which is used for being matched with and inserted with the ruler body of the main ruler (1) on the ruler frame (2), and the first movable grid (72) is not in direct contact with the first fixed grid (71);

the second fixed grid (73) is vertically arranged on one side wall of a second slot (24) which is used for matching and inserting the ruler body of the auxiliary ruler (3) on the ruler frame (2);

and the second movable grid (74) is vertically arranged on the side wall of the auxiliary ruler (3) corresponding to one side of the second fixed grid (73), and the second movable grid (74) is not in direct contact with the second fixed grid (73).

8. The digital caliper for rapidly measuring various sizes of capacitors according to claim 1, further comprising:

the wireless communication module (102) is arranged in the ruler frame (2) and electrically connected with the processor (101), is used for connecting the digital caliper with the terminal equipment of a user in a wireless communication manner so as to send measurement data to the digital caliper, and is one of a Bluetooth module, a ZigBee module or a WiFi module.

9. The digital display caliper for rapidly measuring various sizes of capacitors as claimed in claim 1, wherein a power switch key (26), a clear key (27), a unit conversion key (28) and a wireless communication switch key (29) are arranged on the caliper frame (2).

10. The digital caliper for rapidly measuring various sizes of capacitors as claimed in claim 1, wherein the caliper frame (2) is provided with a first locking member (30) and a second locking member (301) for respectively locking and fixing the main caliper (1) and the auxiliary caliper (3).

Technical Field

The invention relates to the technical field of capacitor quality testing measuring tools, in particular to a digital display caliper for rapidly measuring various sizes of a capacitor.

Background

In capacitor manufacturing enterprises, strict quality detection needs to be performed on capacitors produced by the capacitors, wherein a relatively important quality detection item is detection of the external dimensions of the capacitors, and numerical values such as the diameter, the height, the diameter of a waist portion and the depth of the capacitor are mainly measured by using a digital caliper. In order to ensure the accuracy of the detection, at least 50 samples are required to be sampled in a batch of capacitor products in actual detection operation.

The existing common digital caliper can only measure one size of the capacitor once, for example, the capacitor is axially clamped between a main scale measuring jaw and a scale frame measuring jaw of the digital caliper to detect the axial height of the capacitor, the capacitor needs to be taken down after the axial height of the capacitor is measured, the side wall of the capacitor is clamped between the main scale measuring jaw and the scale frame measuring jaw to measure the diameter of the capacitor, then the capacitor is taken down again, a girdling part of the capacitor is clamped between the main scale measuring jaw and the scale frame measuring jaw to measure the diameter of the girdling part, and the diameter of the girdling part is subtracted from the diameter of the capacitor to calculate the depth and other numerical values of the girdling part. Often, the measurement of various sizes of a capacitor needs to be carried out a plurality of operation steps such as repeated clamping, adjustment, measurement, degree, calculation and the like, the completion of the sampling detection of a batch of products consumes a large amount of time and energy of detection personnel, the workload is extremely large, and the efficiency is low.

Therefore, it is necessary to provide a measuring tool dedicated to capacitor size detection, so that the measuring tool can simultaneously measure a plurality of sizes of the capacitor in one operation, thereby reducing the complicated detection operation steps of the detector, reducing the detection workload, and improving the efficiency of capacitor size detection.

Disclosure of Invention

In summary, the present invention aims to solve the technical deficiencies that the conventional digital caliper is not suitable for measuring various sizes of capacitors at the same time, which results in complicated measuring operation steps, large workload and low measuring efficiency, and provides a digital caliper which has a more reasonable structural design and can rapidly detect various sizes of capacitors at the same time in one operation.

In order to solve the technical defects provided by the invention, the technical scheme is as follows:

a digital display caliper for rapidly measuring various sizes of capacitors comprises:

the upper end of the main scale is horizontally and transversely provided with a main scale measuring jaw vertical to the scale body;

the ruler frame is connected to the main ruler in a sliding mode, and a ruler frame measuring jaw component which is matched with the main ruler measuring jaws to clamp the capacitor to be measured is arranged on the ruler frame;

it is characterized in that the ruler frame measuring jaw component comprises:

the circular bearing platform mechanism is horizontally and fixedly connected to one side of the upper end of the ruler frame, the transverse diameter of the circular bearing platform mechanism corresponds to the extension direction of the measuring claws of the main ruler, and the circular bearing platform mechanism is used for bearing the end face of the capacitor, which is back to the waist binding part of the capacitor, and limiting and fixing the capacitor at the middle part of the circular bearing platform mechanism;

the first distance measuring sensor components are arranged on the circular bearing platform mechanism, uniformly distributed on the periphery of the capacitor to be measured and used for measuring the distance between the first distance measuring sensor components and the outer wall of the capacitor to be measured and converting the distance into a measuring electric signal;

the digital display caliper further comprises:

the auxiliary ruler is connected to the ruler frame in a sliding mode and correspondingly located on one side, back to the main ruler measuring jaw, of the main ruler, a longitudinal measuring rod is horizontally and longitudinally arranged at the upper end of the auxiliary ruler corresponding to the main ruler measuring jaw, and the main ruler measuring jaw is located on the perpendicular bisector of the longitudinal measuring rod;

the two girdling anvil components are correspondingly horizontally and transversely connected to two ends of the longitudinal measuring rod in a sliding manner, extend towards one side of the main ruler measuring jaw and are used for moving oppositely along the longitudinal measuring rod to clamp the girdling part of the capacitor when the upper end of the auxiliary ruler moves to one side of the girdling part of the capacitor to be measured;

the second distance measuring sensor component is arranged on the beam waist measuring anvil component and used for measuring the distance between the beam waist measuring anvil components clamped at the two sides of the beam waist of the capacitor to be measured and converting the distance into a measuring electric signal;

the capacitance grid sensor assembly is arranged among the main scale, the auxiliary scale and the scale frame and is used for measuring the displacement of the main scale and the auxiliary scale relative to the scale frame and converting the displacement into a measuring electric signal;

the processor is arranged in the ruler frame, is electrically connected with the first distance measuring sensor assembly, the second distance measuring sensor assembly and the capacitive grating sensor assembly, and is used for receiving and processing the measuring electric signals sent by the sensor assemblies so as to calculate the diameter of the measured capacitor, the diameter of the waist of the capacitor bundle, the height of the capacitor and the height of the waist of the capacitor bundle and calculate the depth of the waist of the capacitor bundle;

and the display is arranged on the ruler frame and is electrically connected with the processor through the display circuit so as to display the measuring result.

Further, the circular bearing platform mechanism comprises:

the round pedestal is horizontally and fixedly connected to one side of the upper end of the ruler frame, the upper end surface of the round pedestal is flush with the upper end surface of the ruler frame, the diameter of the round pedestal is larger than that of the largest capacitor to be detected, and at least three limiting guide grooves are uniformly distributed in the radius direction of the round pedestal;

the limiting clamping rods are movably inserted into the limiting guide grooves in a one-to-one correspondence manner, and the upper end parts of the limiting clamping rods vertically extend out of the upper end surfaces of the circular pedestal so as to clamp and fix the capacitor to be tested on the circular pedestal under the guidance of the limiting guide grooves and enable the capacitor to be tested and the circular pedestal to be positioned on the same axis;

circular drive seat rotates coaxially and connects under circular pedestal, and the equipartition has the arc drive groove that the number is the same with spacing guide way on it, the lower tip one-to-one swing joint of spacing supporting rod in the arc drive inslot to revolve soon at the external force circular drive seat in-process orders about spacing supporting rod along spacing guide way synchronous phase or dorsad removal with the centre gripping or loosen the capacitor to be measured through arc drive groove.

Furthermore, the annular outer wall of the circular driving seat is uniformly provided with anti-slip threads which are beneficial to the screwing of a user.

Furthermore, a self-clamping tension spring for driving the limiting clamping rod to automatically clamp the tested capacitor is arranged between the circular pedestal and the circular driving seat.

Further, the first distance measuring sensor assembly comprises:

the measuring columns are vertically and uniformly distributed at the edge of the upper end surface of the circular bearing platform mechanism, and the height of the measuring columns is not more than the height of the waist of the minimum measured capacitor beam;

the first distance measuring sensors are respectively and fixedly arranged on the upper parts of the measuring columns, which face one side of the axis of the circular bearing platform mechanism, are used for transmitting detection signals to the side wall of the measured capacitor and receiving reflection signals, and are one of laser distance measuring sensors, infrared distance measuring sensors, ultrasonic distance measuring sensors or radar distance measuring sensors.

Further, the second distance measuring sensor assembly comprises:

and the second distance measuring sensor is arranged on one side of the beam waist measuring anvil component, faces to one side of the main scale measuring jaw, is correspondingly positioned outside a gap between the main scale and the auxiliary scale, and transmits a detection signal to the other beam waist measuring anvil component through the gap and receives a reflection signal, and is one of a laser distance measuring sensor, an infrared distance measuring sensor, an ultrasonic distance measuring sensor or a radar distance measuring sensor.

Further, the capacitive sensor assembly comprises:

the first fixed grid is vertically arranged on the side wall of the main scale body facing one side of the main scale measuring jaw;

the first movable grid is vertically arranged on the side wall, corresponding to one side of the first fixed grid, of the first slot, used for being matched and inserted with the ruler body of the main ruler, on the ruler frame, and the first movable grid is not in direct contact with the first fixed grid;

the second fixed grid is vertically arranged on one side wall of a second slot which is used for matching and inserting the auxiliary ruler body on the ruler frame;

and the second movable grids are vertically arranged on the side wall of the auxiliary ruler body corresponding to one side of the second fixed grid, and the second movable grids are not in direct contact with the second fixed grid.

Further, the digital display caliper further comprises:

and the wireless communication module is arranged in the ruler frame and electrically connected with the processor, is used for connecting the digital display caliper with the terminal equipment of a user in a wireless communication manner so as to send measurement data to the digital display caliper, and is one of a Bluetooth module, a ZigBee module or a WiFi module.

Furthermore, a power switch key, a zero clearing key, a unit conversion key and a wireless communication switch key are arranged on the ruler frame.

Furthermore, the ruler frame is provided with a first locking piece and a second locking piece which are used for respectively locking and fixing the main ruler and the auxiliary ruler.

The invention has the beneficial effects that:

1. the invention can simultaneously measure the height and diameter of the capacitor to be measured, the height and diameter of the waist part of the capacitor and the concave depth of the waist part relative to the outer wall of the capacitor only by clamping and fixing the capacitor to be measured between the main scale measuring jaw and the scale frame measuring jaw assembly at one time, thereby realizing the purpose of simultaneously measuring various size data of the capacitor by clamping the capacitor at one time, greatly reducing the workload of capacitor size detection, reducing the complicated steps in the capacitor size detection process, improving the detection efficiency and saving the detection time.

2. The invention can accurately measure the displacement between the main ruler and the auxiliary ruler relative to the upper end surface of the circular bearing platform mechanism through the capacitive grating sensor assembly and send the measured electric signals to the processor for processing, thereby accurately calculating the axial height of the measured capacitor and the height of the beam waist part of the measured capacitor by the processor. The distance between the first distance measuring sensor assembly surrounding the periphery of the measured capacitor and the outer wall of the measured capacitor is accurately measured, and a measured electric signal is sent to the processor for processing, so that the diameter of the measured capacitor is accurately calculated by the processor according to the fixed distance between the first distance measuring sensor assembly and the circle center position of the upper end surface of the circular bearing platform mechanism. The waist of the capacitor to be measured is clamped by the two waist measuring anvil components, the distance between the two waist measuring anvil components is accurately measured by the second distance measuring sensor component, and the measuring electric signal is sent to the processor, so that the diameter of the waist of the capacitor to be measured is accurately calculated by the processor, and the depth of the waist of the capacitor to be measured is calculated by subtracting the diameter of the waist from the diameter of the capacitor to be obtained by the processor. By the measuring method, various size data of the capacitor to be measured can be measured simultaneously in one operation, the measuring precision is high, manual reading and calculation of detection personnel are not needed, and the detection efficiency is high.

3. The circular bearing platform mechanism can limit and fix the measured capacitor, so that the measured capacitor is always coaxial with the upper end surface of the circular bearing platform mechanism, the main scale measuring claws can be clamped in the cross-section transverse diameter direction of the measured capacitor, and the first distance measuring sensor assemblies can be uniformly distributed on the periphery of the outer wall of the measured capacitor, so that the two beam waist measuring anvil assemblies at two ends of the longitudinal measuring rod can synchronously clamp the beam waist part of the measured capacitor at equal intervals, the intervals between the first distance measuring sensor assemblies and the outer wall of the measured capacitor are equal, and the accuracy and the reliability of the dimension measurement of the measured capacitor are ensured.

4. The ruler frame is connected to the main ruler in a sliding mode, the auxiliary ruler is connected to the ruler frame in a sliding mode, the auxiliary ruler is correspondingly located on one side, back to the measuring jaws of the main ruler, of the main ruler and used for measuring the height of a capacitor to be measured and the height of the waist portion of the capacitor to be measured respectively, the structure is simple, the design is ingenious, the ruler frame space is fully utilized, the main ruler and the auxiliary ruler work independently and do not influence each other, and the height of the capacitor to be measured and the height of the waist portion of the capacitor to be measured can be measured simultaneously. And the longitudinal measuring rod and the measuring jaw of the main ruler are positioned on the same horizontal plane, so that the main ruler and the auxiliary ruler can be reset and zeroed on the upper end surface of the ruler frame, and the measuring accuracy is high.

5. The first distance measuring sensor assembly and the second distance measuring sensor assembly are added on the basis of the capacitive grating sensor assembly in the existing digital display caliper for accurate measurement, so that the measuring modes of the digital display caliper sensor are enriched, and the measurement of the capacitor is more accurate, simple, convenient and rapid.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic block diagram of the circuit of the present invention;

FIG. 3 is a schematic structural view of a circular platform mechanism and a first distance measuring sensor assembly according to the present invention;

FIG. 4 is a schematic structural view of the circular driving seat driving the limiting and clamping rod to move along the limiting guide slot according to the present invention;

FIG. 5 is a schematic cross-sectional structure view of the circular bearing platform mechanism of the present invention cut vertically along the direction of one pair of limiting guide grooves in a normal state;

FIG. 6 is a schematic view of the construction of the girdling anvil assembly and the second distance measuring sensor assembly of the present invention;

FIG. 7 is an enlarged view of a portion of the present invention;

FIG. 8 is an enlarged schematic view of the right side of the secondary ruler, the longitudinal measuring bar and the girdling anvil assembly of the present invention;

FIG. 9 is a schematic view of the horizontal cross-section of the main scale, the auxiliary scale and the scale frame.

In the figure: 100. the main board, 101, the processor, 102, the wireless communication module, 1, the main scale, 11, the main scale, 12, the main scale measuring jaw, 2, the scale frame, 21, the circular cushion mechanism, 211, the circular pedestal, 212, the limit guide groove, 213, the limit clamping rod, 214, the circular driving seat, 215, the arc driving groove, 216, the shaft sleeve, 217, the hanging part, 218, the hanging groove, 219, the anti-slip pattern, 220, the self-clamping tension spring, 22, the first distance measuring sensor component, 221, the measuring column, 222, the first distance measuring sensor, 223, the first reflection sheet, 23, the first slot, 24, the second slot, 25, the thumb support, 26, the power switch key, 27, the zero clearing key, 28, the unit conversion key, 29, the wireless communication switch key, 30, the first locking member, 301, the second locking member, 3, the auxiliary scale, 31, the auxiliary scale, 32, the extension part, 4, the longitudinal measuring rod, 41, the measuring rod scale, 5. the beam waist measuring anvil assembly 51, the marked line 6, the second distance measuring sensor assembly 61, the second distance measuring sensor 62, the second reflector 7, the capacitive grating sensor assembly 71, the first fixed grating 72, the first movable grating 73, the second fixed grating 74, the second movable grating 8 and the display.

Detailed Description

The structure of the present invention will be further described with reference to the accompanying drawings and preferred embodiments of the present invention.

Referring to fig. 1 and 2, the present invention:

a digital display caliper for rapidly measuring various sizes of capacitors comprises:

the main scale 1 is vertically arranged and marked with main scale scales 11 on the left side edge of the vertical scale body, and the left side of the upper end of the main scale 1 is horizontally provided with a main scale measuring jaw 12 vertical to the scale body.

The ruler frame 2 is integrally of a rectangular frame structure, is vertically and slidably connected to the ruler body of the main ruler 1, and is horizontally provided with a ruler frame measuring claw assembly which is matched with the main ruler measuring claws 12 to clamp a capacitor to be measured on the left side of the upper end of the ruler frame.

The invention is characterized in that the ruler frame measuring jaw component comprises:

the circular bearing platform mechanism 21 is horizontally and fixedly connected to the left side of the upper end of the ruler frame 2, the transverse diameter of the upper end face of the circular bearing platform mechanism corresponds to that of the main ruler measuring jaw 12, and the circular bearing platform mechanism 21 is used for bearing the end face of the tested capacitor, which is back to the girdling part of the tested capacitor, and limiting and fixing the tested capacitor on the middle position of the upper end face of the tested capacitor.

And the first distance measuring sensor assemblies 22 are arranged on the upper end surface of the circular bearing platform mechanism 21, are uniformly distributed on the periphery of the outer wall of the measured capacitor, and are used for measuring the distance between the first distance measuring sensor assemblies 22 and the outer wall of the measured capacitor and converting the distance into a measuring electric signal.

Further, the digital display caliper further comprises:

the auxiliary ruler 3 is characterized in that auxiliary ruler scales 31 are vertically arranged on the left side edge of the vertical ruler body, the ruler body is connected to the ruler frame 2 in a sliding mode and correspondingly located on one side, back to the main ruler measuring jaw 12, of the main ruler 1, a vertical measuring rod 4 with a rectangular vertical cross section is horizontally and longitudinally arranged at the upper end of the main ruler measuring jaw 12, and the main ruler measuring jaw 12 is correspondingly located on the perpendicular bisector of the vertical measuring rod 4.

And the two girdling anvil components 5 are correspondingly horizontally and transversely connected to two ends of the longitudinal measuring rod 4 in a sliding manner and extend towards one side of the main ruler measuring jaw 12, and are used for moving oppositely along the longitudinal measuring rod 4 to clamp the girdling part of the capacitor when the upper end of the auxiliary ruler 3 moves to the right side of the girdling part of the capacitor to be measured.

And the second distance measuring sensor assemblies 6 are correspondingly arranged on the two beam waist measuring anvil assemblies 5 and are used for measuring the distance between the beam waist measuring anvil assemblies 5 clamped at the two sides of the beam waist of the capacitor to be measured and converting the distance into a measuring electric signal.

And the capacitive grating sensor component 7 is arranged among the main scale 1, the auxiliary scale 3 and the scale frame 2 and is used for measuring the displacement of the main scale 1 and the auxiliary scale 3 relative to the scale frame 2 and converting the displacement into a measuring electric signal.

And the processor 101 is arranged on the main board 100 in the ruler frame 2, is electrically connected with the first distance measuring sensor component 22, the second distance measuring sensor component 6 and the capacitive grating sensor component 7, and is used for receiving and processing the measuring electric signals sent by the sensor components so as to calculate the diameter of the measured capacitor, the diameter of the waist part of the capacitor bundle, the height of the capacitor and the height of the waist part of the capacitor bundle, and calculate the depth of the waist part of the capacitor bundle.

The display 8 is arranged on the front surface of the ruler frame 2 and is electrically connected with the processor 101 through a display circuit so as to display each measurement result.

After the technical scheme is adopted, the invention can bring the following remarkable technical effects:

firstly, the invention only needs to clamp and fix the capacitor to be detected between the main scale measuring jaw 12 and the scale frame measuring jaw assembly at one time, and can simultaneously measure the height and the diameter of the capacitor to be detected, the height and the diameter of the waist part of the capacitor and the concave depth of the waist part relative to the outer wall of the capacitor, thereby realizing the purpose of simultaneously measuring various size data of the capacitor by clamping the capacitor at one time, greatly reducing the workload of size detection of the capacitor, reducing the complicated steps in the size detection process of the capacitor, improving the detection efficiency and saving the detection time.

In addition, the displacement between the main ruler 1 and the auxiliary ruler 3 relative to the upper end face of the circular bearing platform mechanism 21 can be accurately measured through the capacitive grating sensor assembly 7, and a measurement electric signal is sent to the processor 101 to be processed, so that the axial height of the capacitor to be measured and the height of the beam waist of the capacitor to be measured can be accurately calculated through the processor 101. The distance between the first distance measuring sensor assembly 22 surrounding the periphery of the measured capacitor and the outer wall of the measured capacitor is accurately measured, and a measurement electric signal is sent to the processor 101 to be processed, so that the diameter of the measured capacitor is accurately calculated by the processor 101 according to the fixed distance between the first distance measuring sensor assembly 22 and the circle center position of the upper end face of the circular bearing platform mechanism 21. The waist of the capacitor to be measured is clamped by the two waist anvil components 5, the distance between the two waist anvil components 5 is accurately measured by the second distance measuring sensor component 6, and the measurement electric signal is sent to the processor 101, so that the diameter of the waist of the capacitor to be measured is accurately calculated by the processor 101, and the depth of the waist of the capacitor to be measured can be obtained by subtracting the diameter of the waist by the diameter of the capacitor obtained by the processor 101. The multi-dimension data of the capacitor to be detected can be measured simultaneously in one operation, the measurement precision is high, manual reading and calculation of detection personnel are not needed, the detection speed is high, and the efficiency is high.

Meanwhile, the circular bearing platform mechanism 21 can limit and fix the measured capacitor, so that the measured capacitor is always coaxial with the upper end face of the circular bearing platform mechanism 21, the main ruler measuring claws 12 can be clamped in the cross-section transverse diameter direction of the measured capacitor, and the first distance measuring sensor assemblies 22 can be uniformly distributed on the periphery of the outer wall of the measured capacitor, so that the two waist measuring anvil assemblies 5 at the two ends of the longitudinal measuring rod 4 can synchronously clamp the waist part of the measured capacitor at the same interval, the interval between the first distance measuring sensor assemblies 22 and the outer wall of the measured capacitor is equal, and the accuracy and the reliability of the dimension measurement of the measured capacitor are guaranteed.

Moreover, the ruler frame 2 of the invention is connected on the main ruler 1 in a sliding way, the auxiliary ruler 3 is connected on the ruler frame 2 in a sliding way, and the auxiliary ruler 3 is correspondingly positioned at one side of the main ruler 1 back to the main ruler measuring jaw 12, so that the height of the measured capacitor and the height of the girdling part of the measured capacitor are respectively measured, the structure is simple, the layout is ingenious, the design is reasonable, the space of the ruler frame 2 is fully utilized, the main ruler 1 and the auxiliary ruler 3 work independently without mutual influence, and the height of the measured capacitor and the height of the girdling part can be measured simultaneously. And the longitudinal measuring rod 4 and the lower end surface of the main ruler measuring jaw 12 are positioned on the same horizontal plane, so that the main ruler 1 and the auxiliary ruler 3 can be reset and zeroed on the upper end surface of the ruler frame 2, and the measuring accuracy is high.

In addition, the first distance measuring sensor assembly 22 and the second distance measuring sensor assembly 6 are added on the basis of the capacitive grating sensor assembly 7 in the existing digital caliper for accurate measurement, so that the measurement modes of the digital caliper sensor are enriched, and the measurement of the size of the capacitor is more accurate, simple, reliable, convenient and rapid.

In addition, the display 8 arranged on the ruler frame 2 can intuitively display the measured values of the capacitor to be measured in various sizes, so that the measuring staff can observe and record conveniently, the complexity of manual reading is avoided, errors caused by manual reading are avoided, and the accuracy is higher.

Further, referring to fig. 3 to 5, the circular platform mechanism 21 of the present invention includes:

the round pedestal 211 is horizontally and fixedly connected to the left side of the upper end of the ruler frame 2, the upper end surface of the round pedestal 211 is flush with the upper end surface of the ruler frame 2, the diameter of the round pedestal is larger than that of the largest capacitor to be tested, and four limiting guide grooves 212 extending from the edge of the round pedestal to the circle center of the round pedestal are uniformly distributed in the radius direction of the round pedestal.

The total four limiting clamping rods 213 are movably inserted into the limiting guide grooves 212 in a one-to-one correspondence manner, and the upper end part of each limiting clamping rod 213 vertically extends out of the upper end surface of the circular pedestal 211 so as to clamp and fix the tested capacitor on the circular pedestal 211 under the guidance of the limiting guide grooves 212 and enable the tested capacitor and the circular pedestal 211 to be on the same axis.

The circular driving seat 214 is coaxially and rotatably connected to the lower portion of the circular pedestal 211, four arc driving grooves 215 (shown in fig. 4) with two ends located at the radius edge and near the center of the circle are uniformly distributed on the circular driving seat 214, the lower end portions of the limiting and clamping rods 213 are movably connected in the arc driving grooves 215 in a one-to-one correspondence manner through shaft sleeves 216 (shown in fig. 5), and in the using process, a tester rotates the circular driving seat 214 by screwing with a hand so as to drive the limiting and clamping rods 213 to synchronously move in the opposite direction or the opposite direction along the limiting and guiding groove 212 through the arc driving grooves 215 to clamp or loosen the capacitor to be tested.

Specifically, referring to fig. 5, a hanging portion 217 for hanging the circular driving seat 214 is disposed at the edge of the lower surface of the circular pedestal 211, a hanging groove 218 is disposed on the inner surface of the sidewall of the circular driving seat 214 and is fittingly engaged with the hanging portion 217, the circular driving seat 214 is coaxially and rotatably connected to the lower portion of the circular pedestal 211 through the hanging groove 218 and the hanging portion 217, and a certain space is left between the circular pedestal 211 and the circular driving seat 214 after connection.

It should be noted that, in this embodiment, the design of the connection structure between the circular driving seat 214 and the circular base 211 is only a preferred embodiment of the present invention, and is not limited to the present invention, in some other embodiments, the circular base 211 and the circular driving seat 214 may also be coaxially and rotatably connected through a rotating shaft and a shaft sleeve assembly, or connected by using other coaxial rotating connection methods, only by ensuring that the limiting and clamping rod 213 is driven to clamp or release the capacitor to be tested during the rotation of the circular driving seat 214.

Further, referring to fig. 3, the circular outer wall of the driving socket 214 of the present invention is uniformly distributed with anti-slip threads 219 for facilitating the screwing of the user. In the use, a detection person can conveniently stir the circular driving seat 214 by a thumb through the anti-slip patterns 219, so that the detection person can operate the circular bearing platform mechanism 21 by the thumb with one hand to clamp or loosen the detected capacitor, the operation is simple and convenient, the two hands of the detection person are not occupied, the other hand which is vacated can simultaneously operate the auxiliary ruler 3 and the beam waist anvil measuring component 5, the rapid measurement of the detected capacitor is facilitated, and the detection efficiency is improved.

Further, referring to fig. 4 and 5, a self-clamping tension spring 220 for automatically pulling the circular driving seat 214 to rotate to an initial position to drive the limiting and clamping rod 213 to automatically clamp and fix the capacitor to be measured at the center of the circular pedestal 211 is disposed in a space reserved between the circular pedestal 211 and the circular driving seat 214.

Preferably, as shown in fig. 4, the number of the self-clamping tension springs 220 is four, and the self-clamping tension springs 220 are respectively disposed on one side of the limit guide groove 212 in a one-to-one correspondence manner, one end of each self-clamping tension spring 220 is fixedly connected to the outer side of the limit guide groove 212 on the lower surface of the circular pedestal 211 near the center of the circle, and the other end of each self-clamping tension spring is fixedly connected to the inner side of the edge of the upper surface of the circular driving seat 214. The circular driving base 214 is normally reset by the elastic driving of the four self-clamping tension springs 220 to drive the four limit clamping rods 213 to automatically clamp the middle position of the circular base 211 along the limit guide groove 212 through the arc-shaped driving groove 215.

The self-clamping tension spring 220 can drive the limiting clamping rod 213 to automatically clamp and fix the tested capacitor under the action of elasticity, so that the tested capacitor is ensured to be placed on the circular bearing platform mechanism 21 and fixed without a tester to manually screw the circular driving seat 214 to keep the clamping state of the tested capacitor, the limitation on the hand of the tester for keeping the clamping state of the tested capacitor in the measuring process is removed, the tester can conveniently perform other measuring operations by hand, and the detecting operation process is more convenient, time-saving and labor-saving.

Of course, in other embodiments, the number and the installation position of the self-clamping tension springs 220 can be adjusted according to actual needs, and only the limit clamping rods 213 are required to be driven to automatically clamp the capacitor to be tested.

It should be noted that the number and the position of the limit guide grooves 212 and the limit clamping rods 213 in this embodiment are only one preferred embodiment of the present invention, and are not limited to the present invention. This embodiment is designed to facilitate the main scale 1 and the sub scale 3 to be kept in the closed return-to-zero state without being obstructed by the restraining and holding rod 213 in the initial standby state. In the initial state, the four limit clamping rods 213 can be automatically clamped on the two sides of the main scale measuring jaw 12 and the girdling anvil assembly 5 correspondingly under the elastic force of the self-clamping tension spring 220.

In other embodiments, the number of the limiting clamping rods 213 may be three, and the tested capacitor is clamped and fixed in a manner of forming an included angle of 120 ° with each other, or the number of the limiting clamping rods 213 is five, and the tested capacitor is clamped and fixed in a manner of forming an included angle of 72 ° with each other, as long as it is ensured that the limiting clamping rods 213 do not interfere with the closing and zeroing of the main ruler 1 and the auxiliary ruler 3 in the initial standby state.

Meanwhile, as the capacitor products produced by enterprises are of various specifications and sizes, different sizes, heights and weights, in order to improve the applicability of the dimension detection of the invention, the height of the upper part of the limiting clamping rod 213 exposed out of the upper end surface of the circular pedestal 211 cannot exceed the minimum height of the waist of the capacitor to be detected, so that when the capacitor with the minimum specification and size is measured, the longitudinal measuring rod 4 at the upper end part of the auxiliary ruler 3 can be correspondingly adjusted to the right side of the waist of the capacitor, and the two beams of waist measuring anvil components 5 can be smoothly horizontally clamped on the waist of the capacitor from two sides without being hindered by the limiting clamping rod 213.

Further, as shown in fig. 3 and 5, the first distance measuring sensor assembly 22 of the present invention preferably includes:

the four measuring columns 221 are respectively and correspondingly located on the outer sides of the outer end portions of the four limiting guide grooves 212, the four measuring columns 221 are vertically and uniformly distributed at the edge of the upper end face of the circular pedestal 211, and the height of each measuring column 221 is not larger than that of the waist of the minimum capacitor bundle to be measured. Preferably, the height of the measuring column 221 is not higher than the height of the corresponding limit clamping rod 213, and the distance between each measuring column 221 and the center of the circle of the upper end surface of the circle center pedestal is equal.

The first distance measuring sensors 222 are respectively and fixedly arranged on the upper parts of the measuring columns 221 facing to the side of the axis of the circular bearing platform mechanism 21, preferably laser distance measuring sensors, and are used for emitting laser detection signals to the side wall of the capacitor to be measured and receiving laser reflection signals.

It should be noted that, in the present embodiment, the measuring column 221 is correspondingly disposed outside the position limiting and clamping rod 213, and this design is only a preferred embodiment of the present invention and is not a limitation to the present invention. By adopting the structure design, the layout of the measuring column 221 on the circular pedestal 211 can be prevented from being conflicted with the layout of the limiting clamping rod 213, and the first distance measuring sensor 222 can be favorable for emitting laser detection signals to the axis of the circular pedestal 211. In other embodiments, the positions and the number of the measuring pillars 221 may be adjusted according to actual needs, for example, three measuring pillars 221 may be provided, and arranged at the edge of the upper end surface of the circular pedestal 211 at equal intervals in a manner of forming an angle of 120 ° with each other, and avoid the position where the main measuring claw 12 is closed and returned to zero, as long as the distance between each measuring pillar 221 and the center of the upper end surface of the circular pedestal 211 is equal.

In this embodiment, the laser detection signal emitted by the first distance measuring sensor 222 does not directly irradiate the outer wall of the capacitor to be measured, but irradiates the corresponding limiting clamping rod 213, and in order to reduce scattering of the laser detection signal emitted by the first distance measuring sensor 222 and improve the measurement accuracy and efficiency of the first distance measuring sensor 222, a first reflector 223 for directly reflecting the laser detection signal back is further disposed at a position corresponding to the first distance measuring sensor 222 on each limiting clamping rod 213. During actual measurement, the laser detection signal emitted by the first distance measuring sensor 222 irradiates the first reflective sheet 223 corresponding to the laser detection signal, receives the laser reflection signal reflected by the first reflective sheet 223, and then is converted into a measurement electrical signal to be sent to the processor 101 for processing.

Because the distance between the two corresponding measuring columns 221 is fixed and known, and the cross-sectional diameter of the limiting clamping rod 213 is also fixed and known, after receiving the measuring electrical signal sent by the first distance measuring sensor 222, the processor 101 subtracts the measured value from the fixed distance between the measuring columns 221 and the circle center of the circular pedestal 211 and then subtracts the diameter of the limiting clamping rod 213 according to the set operation rule to obtain the radius of the measured capacitor, and then multiplies 2 by the obtained radius value to obtain the diameter of the measured capacitor.

Further, referring to fig. 6, the second distance measuring sensor assembly 6 of the present invention includes:

and a second distance measuring sensor 61, wherein the second distance measuring sensor 61 is preferably a laser distance measuring sensor, is arranged on one side of one beam waist anvil assembly 5 facing the main scale measuring jaw 12, and is correspondingly positioned on the outer side of the gap between the main scale 1 and the auxiliary scale 3 so as to transmit a laser detection signal to the other beam waist anvil assembly 5 through the gap and receive a laser reflection signal.

In order to reduce the scattering of the laser detection signal emitted by the second distance measuring sensor 61 and improve the measurement accuracy and efficiency of the second distance measuring sensor 61, a second reflection sheet 62 for directly reflecting the laser detection signal back is further arranged at the position of the other beam waist anvil assembly 5 corresponding to the second distance measuring sensor 61.

Referring to fig. 7, the second distance measuring sensor 61 of the present invention can accurately detect the distance between two beams of waist measuring anvil assemblies 5, during detection, a laser detection signal emitted by the second distance measuring sensor 61 horizontally and longitudinally passes through a gap between the main scale 1 and the sub scale 3 and irradiates on the second reflector 62 of the other beam of waist measuring anvil assembly 5 corresponding to the gap, so as to receive a laser reflection signal reflected by the laser detection signal and convert the laser reflection signal into a measurement electric signal, and then the measurement electric signal is transmitted to the processor 101 for processing and finally the distance between two beams of waist measuring anvil assemblies 5 is calculated, so as to obtain the diameter of the beam waist of the capacitor to be measured.

Because the first distance measuring sensor 222 has previously measured the diameter of the measured capacitor, and the second distance measuring sensor 61 has measured the diameter of the waist of the measured capacitor, the processor 101 subtracts the diameter of the waist of the measured capacitor from the diameter of the measured capacitor, and then divides the diameter by 2 according to the operation formula, thereby calculating the depth of the waist of the measured capacitor.

Further, referring to fig. 7 and 8, the two beams of waist measuring anvil assemblies 5 are horizontally and transversely connected to two ends of the longitudinal measuring rod 4 in a sliding manner, and the two beams of waist measuring anvil assemblies 5 can be correspondingly clamped on the beam waist of the capacitor to be measured through manual shifting adjustment during actual measurement.

In order to facilitate manual reading of measured values, measuring rod scales 41 are longitudinally arranged and scribed on the right end face of the longitudinal measuring rod 4, a marking 51 used for indicating the measuring rod scales 41 is arranged on the right end face of each waist measuring anvil component 5, and the measuring rod scales 41 are designed in a symmetrical mode, so that after the waist parts of the capacitor to be measured are clamped by the two waist measuring anvil components 5, the distance between the two waist measuring anvil components 5 can be read through the measuring rod scales 41 at any end of the longitudinal measuring rod 4.

In the measuring rod scales 41 in the embodiment, each minimum scale represents 0.5mm, and the accuracy of manual reading when the waist diameter of the capacitor bundle is measured by the measuring rod scale 41 is 0.1 mm by adding an estimated reading value.

Furthermore, in order to facilitate manual adjustment of the position of the auxiliary ruler 3 in the measuring process, the upper end of the auxiliary ruler 3 is horizontally and transversely provided with an extension part 32 (shown in fig. 7) opposite to the main ruler measuring jaw 12, and the lower end surface of the extension part 32 is flush with the lower end surface of the longitudinal measuring rod 4, so that the auxiliary ruler 3 can be ensured to be closed and zeroed. Moreover, in actual detection operation, a detection person can use a thumb to toggle the extension part 32 to adjust the position of the auxiliary ruler 3, and the operation is convenient.

Further, referring to fig. 9, the capacitive sensor assembly 7 of the present invention includes:

and the first fixed grid 71 is vertically arranged on the left side wall of the main ruler 1, which faces one side of the main ruler measuring jaw 12.

The first movable grid 72 is vertically arranged on the left side wall, corresponding to one side of the first fixed grid 71, of the first slot 23, used for being matched and inserted with the ruler body of the main ruler 1, on the ruler frame 2, and the first movable grid 72 is not in direct contact with the first fixed grid 71.

And the second fixed grid 73 is vertically arranged on the left side wall of the second slot 24 which is used for matching and inserting the ruler body of the auxiliary ruler 3 on the ruler frame 2.

And the second movable fence 74 is vertically arranged on the left side wall of the side, corresponding to the second fixed fence 73, of the ruler body of the auxiliary ruler 3, and the second movable fence 74 is not in direct contact with the second fixed fence 73.

The first fixed grid 71 and the second movable grid 74 are respectively arranged on the main ruler 1 and the auxiliary ruler 3, the main ruler 1 is adjusted firstly during actual measurement, after the tested capacitor is clamped and fixed by the circular cushion cap mechanism 21, the thumb support 25 (shown in figure 1) at the lower end of the ruler frame 2 is pushed to enable the main ruler measuring jaw 12 to abut against the end face of the tested capacitor close to the girdling part side of the tested capacitor, and then the position of the auxiliary ruler 3 is adjusted by taking the ruler frame 2 as a base point until the longitudinal measuring rod 4 at the upper end of the auxiliary ruler 3 is correspondingly adjusted to the girdling part right side of the tested capacitor. In the process, the fixed grid and the movable grid are partially overlapped, and a certain gap exists because the fixed grid and the movable grid are not in direct contact, so that a pair of capacitors is formed between the fixed grid and the movable grid. When the main ruler 1 and the auxiliary ruler 3 vertically move along the ruler body direction in the measuring process, the relative covering length of each pair of capacitors periodically changes from large to small and from small to large, the capacitance value correspondingly periodically changes, and after the capacitance value is converted and processed by the processor 101, the mechanical displacement value of the main ruler 1 and the auxiliary ruler 3 relative to the upper end surface of the ruler frame 2 can be measured, and the axial height of the capacitor to be measured and the height of the waist portion of the capacitor to be measured can be obtained.

The measuring principle of the main ruler 1 and the auxiliary ruler 3 is based on the measuring principle of a capacitive grating sensor of the existing digital caliper and is improved in adaptability on the basis, so that the main ruler 1 and the auxiliary ruler 3 can measure the height of a capacitor to be measured and the height of a waist part at the same time, the position of the capacitor to be measured is not required to be clamped and adjusted repeatedly to measure different types of size data, the complicated steps of measuring operation are greatly reduced on the premise of ensuring the measuring accuracy, and the detecting speed and the detecting efficiency are greatly improved.

Further, referring to fig. 2, the digital caliper according to the present invention further includes:

the wireless communication module 102 is arranged on the main board 100 in the ruler frame 2, electrically connected with the processor 101, and used for wirelessly communicating the digital caliper with terminal equipment such as a smart phone of a user so as to send measurement data to the smart phone of the user, thereby replacing the work of manually recording the measurement data by measurement personnel, facilitating the recording and storage of the measurement data, reducing the workload of the measurement personnel and improving the detection efficiency.

Preferably, the wireless communication module 102 is a bluetooth module in this embodiment, because the bluetooth module has a simple technology, a wide application range, a relatively low cost, a low power consumption, and is capable of wirelessly connecting with different types of intelligent devices, and the applicability is strong. Of course, in some other embodiments, the wireless communication module 102 may completely adopt a ZigBee module or a WiFi module, and only needs to ensure that the present invention can be wirelessly connected with a terminal device of a user to transmit detection data.

Further, referring to fig. 1, the tape frame 2 of the present invention is provided with a power switch 26, a clear key 27, a unit switch 28 and a wireless communication switch 29 electrically connected to the processor 101. In actual use, the on-off of the invention can be controlled by a power switch key 26, the reset key 27 ensures that the main scale 1 and the auxiliary scale 3 can reset and zero in an initial standby state, the conversion of a measurement unit is carried out by a unit conversion key 28, the on-off of a Bluetooth module is controlled by a wireless communication switch key 29, and the Bluetooth communication function is closed to reduce the power consumption when the measurement data recording is not needed.

Further, referring to fig. 1, in order to fix the main scale 1 and the auxiliary scale 3 during the measurement process and ensure the measurement accuracy, the scale frame 2 of the present invention is further provided with a first locking member 30 and a second locking member 301 for respectively locking and fixing the main scale 1 and the auxiliary scale 3.

The above examples are merely for the purpose of clarifying a specific embodiment of the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, it is possible to derive other adjustments or modifications of the main scale 1, the scale frame 2, the circular platform mechanism 21, the first distance measuring sensor 222 assembly 22, the auxiliary scale 3, the longitudinal measuring rod 4, the girdling anvil assembly 5, the second distance measuring sensor 61 assembly 6, the capacitive grating sensor assembly 7, etc., which are not listed herein. Any modification, replacement or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.