Automatic calibration device for metering scale

Abstract

The utility model relates to the technical field of weighing apparatus calibration auxiliary devices, and specifically discloses a metering scale automatic calibration device comprising a connecting support and a reference scale, one side of the connecting support is fixedly connected with the metering scale, and the lower part of the other side of the connecting support is connected with the reference scale through an upper hinge assembly. The lower part of the reference scale is connected with a standard weight group through a lower hinge assembly; according to the automatic calibration device for the metering scale, the reference scale is arranged, the deviation influence of external factors on the metering scale under actual working conditions is automatically detected in real time, the deviation is automatically calibrated through a control system program, errors of the metering scale caused by the external factors are eliminated, the requirement that a common metering scale is used under severe and complex working conditions is met, and the working efficiency is improved. And the metering accuracy of the metering scale is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing instrument calibration auxiliary devices, in particular to an automatic calibration device for a measuring scale. Background Art

[0002] Automatic calibration of a measuring scale refers to the use of built-in programs and mechanisms to enable the measuring scale to complete the calibration process by itself without human intervention to ensure the accuracy and reliability of its measurement results. The automatic calibration function is very important to ensure that the measuring scale can maintain high accuracy after long-term use or environmental changes. The purpose of automatic calibration: 1. Ensure accuracy: Automatic calibration can eliminate measurement errors caused by environmental changes, wear and tear, etc., to ensure that the measurement results of the scale are accurate. 2. Improve efficiency: Automatic calibration reduces the time and labor required for manual calibration and improves work efficiency. 3. Maintain standards: Through regular automatic calibration, the measurement standards of the measuring scale can be maintained to ensure compliance with relevant metrology regulations and standards. Through the automatic calibration function, the measuring scale can maintain high accuracy and reliability in various usage environments, provide users with accurate measurement results, thereby improving work efficiency and product quality.

[0003] Measuring scales are widely used in industrial production. When used in harsh working conditions, they will be affected by external factors, so that the measuring accuracy cannot meet the production requirements, making ordinary measuring scales unable to be used in harsh working conditions. Inaccurate measurement is prone to occur. There is no equipment that can be calibrated in real time under harsh working conditions, which affects the feeding accuracy of production. Therefore, it is urgent to design an automatic calibration device for measuring scales to solve the problem that existing ordinary measuring scales cannot be calibrated under harsh working conditions and external factors cause errors in measuring scales. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model aims to provide an automatic calibration device for a measuring scale.

[0005] The utility model solves the technical problem by adopting the following technical solution: an automatic calibration device for a measuring scale, comprising a connecting bracket and a reference scale, wherein one side of the connecting bracket is fixedly connected to the measuring scale, the lower part of the other side of the connecting bracket is connected to the reference scale via an upper hinge assembly, and the lower part of the reference scale is connected to a standard weight group via a lower hinge assembly.

[0006] Specifically, the upper hinge assembly includes an upper hanger, an upper "C"-shaped frame, an upper connecting plate, an upper connecting rod and an upper pin shaft. The upper and lower parts of the upper hanger are provided with threads. The upper part of the upper hanger passes through the "C"-shaped groove on one side of the connecting bracket, and the upper hanger is connected to the connecting bracket by bolts.

[0007] Specifically, the upper "C"-shaped frame has an opening facing downward. A threaded hole is provided in the upper part of the upper "C"-shaped frame. The lower part of the upper suspension rod is screwed into the threaded hole. The upper connecting plate is rotatably connected inside the upper "C"-shaped frame through the upper pin shaft.

[0008] Specifically, the lower part of the upper connecting plate is fixedly connected to the upper connecting rod. The upper connecting rod has a thread. The reference scale uses an S-type weighing sensor. A threaded hole is provided in the upper part of the S-type weighing sensor. The upper connecting rod is screwed into the upper threaded hole of the reference scale.

[0009] Specifically, the lower hinge assembly includes a lower suspension rod, a lower "C"-shaped frame, a lower connecting plate, a lower connecting rod, and a lower pin shaft. The lower connecting rod has a thread. A threaded hole is provided in the lower part of the reference scale. The lower connecting rod is screwed into the lower threaded hole of the reference scale. The lower connecting rod is fixedly connected to the lower connecting plate.

[0010] Specifically, the lower connecting plate is rotatably connected inside the lower "C"-shaped frame through the lower pin shaft. The lower "C"-shaped frame has an opening facing upward. A threaded hole is provided in the lower part of the lower "C"-shaped frame. Threads are provided on both the upper and lower parts of the lower suspension rod. The upper part of the lower suspension rod is screwed into the threaded hole of the lower "C"-shaped frame.

[0011] Specifically, the standard weight set includes multiple standard weights and two weight fastening rods. A threaded hole is provided in the middle of the standard weight. The lower part of the lower suspension rod is screwed into the threaded hole of the standard weight. Through holes are provided on both sides of the standard weight. The weight fastening rods pass through the through holes. The weight fastening rods are made of threaded rods. Nuts are screwed on both the upper and lower parts of the weight fastening rods to fix the standard weights.

[0012] The utility model has the following beneficial effects:

[0013] The automatic calibration device for the weighing scale designed by the utility model detects in real time and automatically the deviation influence caused by external factors on the weighing scale under actual working conditions through the setting of the reference scale, and automatically calibrates the deviation through the control system program, so as to eliminate the error caused by external factors on the weighing scale, meet the use of ordinary weighing scales under harsh and complex working conditions, and improve the weighing accuracy of the weighing scale. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the automatic calibration device for the weighing scale.

[0015] In the figure: 1 - connecting bracket; 2 - upper suspension rod; 3 - upper "C"-shaped frame; 4 - upper connecting plate; 5 - upper connecting rod; 6 - upper pin shaft; 7 - reference scale; 8 - lower connecting rod; 9 - lower connecting plate; 10 - lower pin shaft; 11 - lower "C"-shaped frame; 12 - lower suspension rod; 13 - standard weight; 14 - weight fastening rod. Detailed Embodiment

[0016] The following will further describe in a clear and complete manner the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0017] As Figure 1 shown, an automatic calibration device for a weighing scale includes a connecting bracket 1, an upper hinge assembly, a reference scale 7, a lower hinge assembly, and a set of standard weights. One side of the connecting bracket 1 is fixedly connected to the weighing end of the weighing scale, and the lower part of the other side of the connecting bracket 1 is connected to the reference scale 7 through the upper hinge assembly. The lower part of the reference scale 7 is connected to the set of standard weights through the lower hinge assembly.

[0018] The upper hinge assembly 1 includes an upper suspension rod 2, an upper "C" - shaped frame 3, an upper connecting plate 4, an upper connecting rod 5, and an upper pin shaft 6. Threads are provided on both the upper and lower parts of the upper suspension rod 2. The upper part of the upper suspension rod 2 passes through the "C" - shaped groove on one side of the connecting bracket 1, and the upper suspension rod 2 is connected to the connecting bracket 1 by bolts.

[0019] The upper "C" - shaped frame 3 has an opening facing downwards. A threaded hole is provided in the upper part of the upper "C" - shaped frame 3, and the lower part of the upper suspension rod 2 is threadedly connected to the threaded hole in the upper "C" - shaped frame 3. The upper connecting plate 4 is rotatably connected within the upper "C" - shaped frame 3 through the upper pin shaft 6.

[0020] The lower part of the upper connecting plate 4 is fixedly connected to the upper connecting rod 5. Threads are provided on the upper connecting rod 5. The reference scale 7 adopts an S - type weighing sensor, and threaded holes are provided on both the upper and lower parts of the S - type weighing sensor. The upper connecting rod 5 is threadedly connected to the upper threaded hole of the reference scale 7.

[0021] The lower hinge assembly includes a lower suspension rod 12, a lower "C" - shaped frame 11, a lower connecting plate 9, a lower connecting rod 8, and a lower pin shaft 10. Threads are provided on the lower connecting rod 8. A threaded hole is provided in the lower part of the reference scale 7, and the lower connecting rod 8 is threadedly connected to the threaded hole in the lower part of the reference scale 7. The lower connecting rod 8 is fixedly connected to the lower connecting plate 9.

[0022] The lower connecting plate 9 is rotatably connected within the lower "C" - shaped frame 11 through the lower pin shaft 10. The lower "C" - shaped frame 11 has an opening facing upwards. A threaded hole is provided in the lower part of the lower "C" - shaped frame 11. Threads are provided on both the upper and lower parts of the lower suspension rod 12, and the upper part of the lower suspension rod 12 is threadedly connected to the threaded hole in the lower "C" - shaped frame 11.

[0023] The standard weight set is provided with multiple standard weights 13 and two weight fastening rods 14. A threaded hole is provided in the middle of the standard weight 13. The lower part of the lower suspension rod 12 is threadedly connected inside the threaded hole of the standard weight 13. Through holes are provided on both sides of the standard weight 13, and the weight fastening rods 14 pass through the through holes. The weight fastening rods 14 are made of threaded rods, and nuts are threadedly connected above and below the weight fastening rods 14 to fix the standard weights 13.

[0024] The working principle of the present utility model:

[0025] After the reference scale 7 of the automatic calibration device is assembled, it is connected and fixed to the weighing scale with the connecting bracket 1 to ensure that the weighing scale and the reference scale 7 are in the same working condition; before the weighing scale and the reference scale 7 carry out production work, the weighing scale and the reference scale 7 are calibrated respectively without the influence of external interference; an additional set of reference scale 7 is added. The reference scale 7 uses adjustable fixed standard value weights. The reference scale 7 and the weighing scale that needs to be automatically calibrated are placed under the same working condition. When external factors affect the measurement, the displayed scale value of the reference scale 7 will be different from the standard value of the weights. The real-time calibration amount can be obtained through system calculation, and the system automatically calibrates the weighing scale value with the calibration amount.

[0026] Measurement condition 1: When there is no interference from external factors, the displayed value of the reference scale 7 of the automatic calibration device is the value of the standard weight 13, the automatic calibration amount is 0, and the weighing scale works normally.

[0027] Measurement condition 2: When affected by external factors, the displayed value of the reference scale 7 of the automatic calibration device is different from the value of the standard weight 13. The system can calculate the calibration amount through the displayed value of the reference scale 7 and the value of the standard weight 13, and automatically calibrate the weighing scale with the calibration amount, then the actual value of the weight of the material measured by the weighing scale can be obtained and displayed, so as to achieve the purpose of automatic calibration of the weighing scale.

[0028] The present utility model is not limited to the above embodiments. Anyone should know that structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, all fall within the protection scope of the present utility model.

[0029] The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

[0030] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic calibration device for a weighing scale, characterized in that, It includes a connecting bracket and a reference scale. One side of the connecting bracket is fixedly connected to a weighing scale, and the lower part of the other side of the connecting bracket is connected to the reference scale through an upper hinge assembly. The lower part of the reference scale is connected to a set of standard weights through a lower hinge assembly.

2. The automatic calibration device for a weighing scale according to claim 1, characterized in that, The upper hinge assembly includes an upper suspension rod, an upper "C" - shaped frame, an upper connecting plate, an upper connecting rod, and an upper pin shaft. Threads are provided at both the upper and lower parts of the upper suspension rod. The upper part of the upper suspension rod passes through the "C" - shaped groove on one side of the connecting bracket, and the upper suspension rod is connected to the connecting bracket by bolts.

3. The automatic calibration device for a weighing scale according to claim 2, characterized in that, The upper "C" - shaped frame has an opening facing downwards. A threaded hole is provided in the upper part of the upper "C" - shaped frame, and the lower part of the upper suspension rod is threaded into the threaded hole. The upper connecting plate is rotatably connected inside the upper "C" - shaped frame through the upper pin shaft.

4. The automatic calibration device for a weighing scale according to claim 3, characterized in that, The lower part of the upper connecting plate is fixedly connected to the upper connecting rod. The upper connecting rod has threads. The reference scale uses an S - type weighing sensor, and a threaded hole is provided in the upper part of the S - type weighing sensor. The upper connecting rod is threaded into the upper threaded hole of the reference scale.

5. The automatic calibration device for a weighing scale according to claim 1, characterized in that, The lower hinge assembly includes a lower suspension rod, a lower "C" - shaped frame, a lower connecting plate, a lower connecting rod, and a lower pin shaft. The lower connecting rod has threads, and a threaded hole is provided in the lower part of the reference scale. The lower connecting rod is threaded into the lower threaded hole of the reference scale, and the lower connecting rod is fixedly connected to the lower connecting plate.

6. The automatic calibration device for a weighing scale according to claim 5, characterized in that, The lower connecting plate is rotatably connected inside the lower "C" - shaped frame through the lower pin shaft. The lower "C" - shaped frame has an opening facing upwards. A threaded hole is provided in the lower part of the lower "C" - shaped frame. Threads are provided at both the upper and lower parts of the lower suspension rod, and the upper part of the lower suspension rod is threaded into the threaded hole of the lower "C" - shaped frame.

7. The automatic calibration device for a weighing scale according to claim 6, wherein, The set of standard weights includes multiple standard weights and two weight fastening rods. A threaded hole is provided in the middle of the standard weight. The lower part of the lower suspension rod is threaded into the threaded hole of the standard weight. Through - holes are provided on both sides of the standard weight, and the weight fastening rods pass through the through - holes. The weight fastening rods are made of threaded rods, and nuts are threaded on both the upper and lower parts of the weight fastening rods to fix the standard weights.

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