Electronic scale with error compensation

Abstract

The utility model discloses an electronic scale with error compensation, which comprises an electronic scale main body, the inner side surface of the electronic scale main body is provided with a mounting plate, the surface of the mounting plate is fixedly provided with a weighing sensor, the upper end surface of the electronic scale main body is provided with a scale pan, the inner side surface of the electronic scale main body is provided with a positioning seat, and the positioning seat is provided with an error compensation device. An electromagnetic pin is inserted into the inner side surface of the positioning seat, an electromagnetic coil is wound around the outer end of the electromagnetic pin, a positioning strip is fixed to the outer surface of the lower end of the electromagnetic pin, the outer surface of the positioning strip is clamped into the inner side surface of an arch-shaped seat, the arch-shaped seat is fixed to the inner side surface of the lower end of the electronic scale body, and a motor is fixed to the upper surface of the arch-shaped seat; the outer surface of the driving shaft of the motor is connected to the inner side surface of the positioning strip through threads, the electromagnetic pin vertically moves up and down, a sensor can be reversely pushed or attracted, displacement loss can be compensated, the two sides of the sensor can be adjusted up and down at the same time, the electromagnetic pin is independently adjusted and compensated, the mechanism is simple, and control is convenient.

Description

Technical Field

[0001] The utility model relates to the field of electronic scales with error compensation, and more specifically, to an electronic scale with error compensation. Background Art

[0002] Generally speaking, the electronic scale is composed as follows: a load sensor installed in a load detection mechanism is used to detect the load generated by the object being weighed, and digital conversion data obtained by digitizing the detection signal is collected at all times and displayed on a display as a measurement value;

[0003] For this type of electronic scale, especially for high-precision electronic scales, the ratio of the maximum weighing value to the minimum weighing unit value can even reach 1 / 1.6 million to 1 / 2 million (0.5 PPM). However, electronic parts and components other than them have a large temperature dependence, or the electronic properties and mechanical properties will change over time; therefore, electronic scales are generally equipped with a calibration function. An external weight with a known mass for calibrating the sensitivity or a built-in weight of the electronic scale is loaded on the load detection part, and the sensitivity coefficient used for mass conversion is updated so that the measurement display value in this state is consistent with the mass of the weight used for calibration. This operation is generally called sensitivity calibration or range calibration. However, this sensitivity calibration is not only performed when setting up the electronic scale, but also in order to eliminate the sensitivity changes caused by the changes in the components of the electronic scale over time, the sensitivity calibration is performed at any time as needed, or when a preset temperature change occurs, or regularly at predetermined intervals when in use;

[0004] In actual use, due to the influence of environmental conditions and long-term frequent use, the sensor will have certain deviations and need to be corrected. Many sensors need to be restored to an accurate state after long-term use due to characteristic problems. However, current electronic scales cannot meet this requirement during use. When the measurement is inaccurate, the electronic scale is often directly repaired or replaced with a new one, which is unreasonable.

[0005] In the prior art, such as the error compensation electronic scale with authorization announcement number CN112146741A, it solves the problem that the electronic scale has inaccurate measurements after long-term use, and the electronic scale needs frequent maintenance and replacement; the technical solution to the technical problem includes a base, a bearing plate is provided above the base, a metering disk is provided on the base and is placed at the bottom of the bearing plate, a plurality of sensors evenly distributed around the circumference are provided on the metering disk, a groove of the same size as the metering disk is provided at the lower end of the bearing plate, a plurality of pressure platforms evenly distributed around the circumference are provided in the groove, when not working, the pressure platforms are in contact with the sensors but do not generate pressure, a driving device is installed at the bottom of the metering disk on the base, a driving shaft that can be used to drive the metering disk is connected to the driving device; a power supply assembly is provided on the base; the present invention has a compact structure and can improve the service life of the sensor and the measurement accuracy of the electronic scale;

[0006] In the above patent, it is inconvenient to adjust and control the sensors during calibration and adjustment, and multiple sensors cannot be adjusted and calibrated together. The mechanism is complex and the control is inconvenient. Utility Model Content

[0007] In view of the problems existing in the prior art, the purpose of the utility model is to provide an electronic scale with error compensation. By adopting an electromagnetic pin to move vertically up and down, the sensor can be pushed back or attracted, which can compensate for the loss of displacement. Both sides of the sensor can be adjusted up and down at the same time, and the electromagnetic pin can be adjusted and compensated separately. The structure is simple and the control is convenient.

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] The electronic scale with error compensation comprises an electronic scale body, wherein a mounting plate is arranged on the inner surface of the electronic scale body, a weighing sensor is fixed on the surface of the mounting plate, a weighing pan is arranged on the upper end surface of the electronic scale body, a positioning seat is arranged on the inner surface of the electronic scale body, an electromagnetic pin is inserted into the inner surface of the positioning seat, an electromagnetic coil is wound around the outer end of the electromagnetic pin, a positioning strip is fixed on the outer surface of the lower end of the electromagnetic pin, the outer surface of the positioning strip is stuck into the inner surface of the arch seat, the arch seat is fixed to the inner surface of the lower end of the electronic scale body, a motor is fixed on the upper surface of the arch seat, the outer surface of the driving shaft of the motor is connected to the inner surface of the positioning strip by a thread, a positioning slot is arranged on the side of the arch seat, the positioning strip is slidably connected to the inner surface of the positioning slot, the electromagnetic pin is moved vertically up and down to push back or attract the sensor, so as to compensate for the loss of displacement, both sides of the electromagnetic pin are adjusted up and down at the same time, and the electromagnetic pin is adjusted and compensated separately, the mechanism is simple, and the control is convenient.

[0010] Furthermore, a positioning recess is provided on the inner surface of the lower end of the positioning seat, and the outer surface of the positioning strip is slidably connected to the inner surface of the positioning recess of the positioning seat.

[0011] Furthermore, the outer surface of the lower end of the driving shaft of the motor is connected to the inner surface of the lower end of the electronic scale body through a bearing.

[0012] Furthermore, a magnet block is arranged at the bottom of the weighing sensor.

[0013] Furthermore, the scale pan is supported on the upper surface of the weighing sensor.

[0014] Furthermore, the positioning strip adopts a square strip structure, and the outer surfaces on both sides thereof are tightly fitted to the inner surface of the positioning recess of the positioning seat.

[0015] Furthermore, a threaded hole is provided on the inner surface of the middle end of the positioning bar, and the outer surface of the driving shaft is connected to the inner surface of the threaded hole of the positioning bar through threads.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) By using the electromagnetic pin to move vertically up and down, the sensor can be pushed back or attracted, which can compensate for the loss of displacement. Both sides can be adjusted up and down at the same time, and the electromagnetic pin can be adjusted and compensated separately. The structure is simple and easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0020] Figure 3 It is a top view of the overall structure of the utility model;

[0021] Figure 4 It is a cross-sectional view of the positioning strip of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1 electronic scale body, 2 mounting plate, 3 weighing sensor, 4 weighing pan, 5 positioning seat, 6 electromagnetic pin, 7 electromagnetic coil, 8 positioning bar, 9 positioning notch, 10 arch seat, 11 motor, 12 drive shaft, 13 positioning slide, 14 bearing, 30 magnet block, 80 threaded hole, DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0025] See also Figure 1-4 An electronic scale with error compensation includes an electronic scale body 1, a mounting plate 2 is arranged on the inner surface of the electronic scale body 1, a weighing sensor 3 is fixed on the surface of the mounting plate 2, a weighing pan 4 is arranged on the upper end surface of the electronic scale body 1, a positioning seat 5 is arranged on the inner surface of the electronic scale body 1, an electromagnetic pin 6 is inserted into the inner surface of the positioning seat 5, an electromagnetic coil 7 is wound around the outer end of the electromagnetic pin 6, a positioning strip 8 is fixed on the outer surface of the lower end of the electromagnetic pin 6, the outer surface of the positioning strip 8 is stuck into the inner surface of the arch seat 10, and the arch seat 10 is fixed on the inner surface of the lower end of the electronic scale body 1, and a motor 11 is fixed on the upper surface of the arch seat 10. The outer surface of the driving shaft 12 of the motor 11 is connected to the inner surface of the positioning bar 8 through a thread. A positioning groove 13 is set on the side of the arch seat 10, and the positioning bar 8 is slidably connected to the inner surface of the positioning groove 13. By adopting the electromagnetic pin to move vertically up and down, the sensor can be pushed back or attracted, which can compensate for the loss of displacement. Both sides of it are adjusted up and down at the same time, and the electromagnetic pin is adjusted and compensated separately. The mechanism is simple and the control is convenient;

[0026] A positioning notch 9 is provided on the inner surface of the lower end of the positioning seat 5, and the outer surface of the positioning strip 8 is slidably connected to the inner surface of the positioning notch 9 of the positioning seat 5. The positioning strip 8 adopts a square strip structure, and the outer surfaces on both sides thereof are tightly fitted to the inner surface of the positioning notch 9 of the positioning seat 5;

[0027] The outer surface of the lower end of the driving shaft 12 of the motor 11 is connected to the inner surface of the lower end of the electronic scale body 1 through a bearing 14, so as to support the driving shaft 12 to rotate;

[0028] The weighing pan 4 is supported on the upper surface of the weighing sensor 3 to facilitate weighing;

[0029] A threaded hole 80 is provided on the inner surface of the middle end of the positioning bar 8, and the outer surface of the driving shaft 12 is connected to the inner surface of the threaded hole 80 of the positioning bar 8 by threads, which is convenient for installation;

[0030] When it is used, a weighing sensor 3 is fixed on the surface of the mounting plate 2, a weighing pan 4 is provided on the upper end surface of the electronic scale body 1, and a magnet block 30 is provided at the bottom of the weighing sensor 3, so as to form a mutual force with the electromagnetic pin 6; a positioning seat 5 is provided on the inner side surface of the electronic scale body 1, and an electromagnetic pin 6 is inserted into the inner side surface of the positioning seat 5, and an electromagnetic coil 7 is wound around the outer end of the electromagnetic pin 6, and a positioning bar 8 is fixed on the outer surface of the lower end of the electromagnetic pin 6, and the outer surface of the positioning bar 8 is stuck into the inner surface of the arch seat 10, and the arch seat 10 is fixed on the inner side surface of the lower end of the electronic scale body 1, and a motor 11 is fixed on the upper surface of the arch seat 10, and the outer surface of the driving shaft 12 of the motor 11 is connected to the inner surface of the positioning bar 8 through a thread, and the driving shaft 12 is driven by the motor 11 to rotate, which can drive the positioning bar 8 to move up and down, and drive the electromagnetic pin 6 to move up and down, and can be close to the weighing sensor 3, and the electromagnetic coil 7 is energized, and the sensor is pushed and pulled according to the current size, and the sensor position correction can be adjusted, which is convenient for adjustment and calibration and easy to use.

[0031] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An electronic scale with error compensation, comprising an electronic scale body (1), characterized in that: The inner surface of the electronic scale body (1) is provided with a mounting plate (2), a weighing sensor (3) is fixed on the surface of the mounting plate (2), a weighing pan (4) is provided on the upper end surface of the electronic scale body (1), a positioning seat (5) is provided on the inner surface of the electronic scale body (1), an electromagnetic pin (6) is inserted into the inner surface of the positioning seat (5), an electromagnetic coil (7) is wound around the outer end of the electromagnetic pin (6), and a positioning strip (8) is fixed to the outer surface of the lower end of the electromagnetic pin (6). The outer surface of the positioning strip (8) is inserted into the inner surface of the arch seat (10); the arch seat (10) is fixed to the inner surface of the lower end of the electronic scale body (1); a motor (11) is fixed to the upper surface of the arch seat (10); the outer surface of the driving shaft (12) of the motor (11) is connected to the inner surface of the positioning strip (8) through a thread; a positioning groove (13) is provided on the side of the arch seat (10); and the positioning strip (8) is slidably connected to the inner surface of the positioning groove (13).

2. The electronic scale with error compensation according to claim 1, characterized in that: The inner surface of the lower end of the positioning seat (5) is provided with a positioning recess (9), and the outer surface of the positioning strip (8) is slidably connected to the inner surface of the positioning recess (9) of the positioning seat (5).

3. The electronic scale with error compensation according to claim 1, characterized in that: The outer surface of the lower end of the driving shaft (12) of the motor (11) is connected to the inner surface of the lower end of the electronic scale body (1) via a bearing (14).

4. The electronic scale with error compensation according to claim 1, characterized in that: A magnet block (30) is arranged at the bottom of the weighing sensor (3).

5. The electronic scale with error compensation according to claim 1, characterized in that: The weighing pan (4) is supported on the upper surface of the weighing sensor (3).

6. The electronic scale with error compensation according to claim 2, characterized in that: The positioning strip (8) adopts a square strip structure, and the outer surfaces on both sides thereof are tightly fitted to the inner surface of the positioning recess (9) of the positioning seat (5).

7. The electronic scale with error compensation according to claim 1, characterized in that: A threaded hole (80) is provided on the inner surface of the middle end of the positioning bar (8), and the outer surface of the drive shaft (12) is connected to the inner surface of the threaded hole (80) of the positioning bar (8) via threads.

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