Calibration equipment for metering of high-precision electronic scale

Abstract

The utility model provides calibration equipment for metering of a high-precision electronic scale, which comprises a box body, a pressure sensor is arranged in an inner cavity of the box body, a pressure plate is fixedly mounted at the bottom of the pressure sensor, a pressure display panel is fixedly mounted at the top of the box body, and a clamping mechanism is arranged on the surface of the box body. The clamping mechanism comprises a two-way motor and toothed plates, the two-way motor is fixedly installed on the rear side of the box body, the two toothed plates are located on the left side and the right side of an inner cavity of the box body, by arranging the clamping mechanism, the position of the electronic scale during calibration can be limited, the situation that due to contact of a pressure plate, the position of the electronic scale deviates is avoided, and the calibration accuracy is improved. The pressure plate cannot be located in the center area of the electronic scale, so that the pressure value of the pressure sensor is deviated from the pressure value fed back by the electronic scale, normal calibration work is affected, the stability of electronic scale testing is improved, and an operator can use the electronic scale conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of high-precision electronic scale calibration equipment for measurement, belong to electronic scale technical field. BACKGROUND

[0002] Electronic scale is a kind of weighing instrument, weighing instrument is the tool for measuring the mass of an object using Hooke's law or the principle of force lever balance, and can be divided into three categories according to the structure principle, namely mechanical scale, electronic scale and electromechanical scale. Electronic scale is mainly composed of three parts: load-bearing system (such as scale pan and scale body), force transmission conversion system (such as lever force transmission system and sensor) and indicating system (such as scale dial and electronic display instrument).

[0003] Chinese open patent (publication number: CN 208953116 U) discloses an electronic scale calibration device, which comprises a plurality of bases, each base is vertically fixedly installed with a vertical column at the upper end, a plurality of vertical columns are fixedly connected through a mounting bracket at the upper end, a center of the mounting bracket is vertically fixedly installed with an electro-hydraulic push rod, a push rod head at the lower end of the electro-hydraulic push rod is fixedly installed with a pressure sensor, and the lower end of the pressure sensor is fixedly installed with a calibration plate. The workbench is horizontally arranged at the lower end of the calibration plate, and the mounting bracket is provided with a processor electrically connected with the pressure sensor and a display screen electrically connected with the processor. The beneficial effect is that the electronic scale calibration device can automatically pressurize the electronic scale to be calibrated to replace the weight, thereby saving the trouble of manually placing the weight on the electronic scale, saving time and effort, and there is no need to worry about the problem of affecting the accuracy of calibration due to weight wear. It is practical;

[0004] When the calibration plate of the above-mentioned device contacts the electronic scale downward, the electronic scale may be offset. At this time, since the calibration plate cannot be in the central area of the electronic scale, the pressure value generated when the calibration plate is pressed down may deviate from the pressure value borne by the electronic scale, thereby possibly affecting the calibration of the electronic scale and being inconvenient for the operator to use.

[0005] Therefore, a high-precision electronic scale calibration equipment for measurement is proposed. CONTENT OF THE UTILITY MODEL

[0006] Therefore, the utility model provides a high-precision electronic scale calibration equipment for measurement to solve or alleviate the technical problems in the prior art, at least to provide a beneficial choice.

[0007] The technical scheme of the utility model is as follows: a high-precision electronic scale calibration equipment for measurement, comprising a box body, a pressure sensor is arranged in the inner cavity of the box body, a pressure plate is fixedly installed at the bottom of the pressure sensor, and a pressure display panel is fixedly installed at the top of the box body.

[0008] The box surface is provided with a clamping mechanism, the clamping mechanism comprises a bidirectional motor and a tooth plate, the bidirectional motor is fixedly installed on the rear side of the box, both the tooth plates are located on the left and right sides of the inner cavity of the box, the bottoms of both the tooth plates are fixedly connected with hard springs, the inner sides of both the tooth plates are movably connected with connecting rods, the other ends of both the connecting rods are movably connected with moving blocks, and the inner sides of both the moving blocks are fixedly installed with clamping plates.

[0009] Further preferably, the output ends of the left and right sides of the bidirectional motor are fixedly connected with light rods, the outer sides of both the light rods are movably connected with driving bevel gears, the left and right sides of the rear side of the box are movably connected with driven bevel gears, the surfaces of both the driven bevel gears are engaged with the surfaces of both the driving bevel gears, the front sides of both the driven bevel gears are fixedly connected with connecting rods, the surfaces of both the connecting rods are fixedly installed with transmission gears, and the surfaces of both the transmission gears are engaged with the surfaces of both the tooth plates.

[0010] Further preferably, the surfaces of both the light rods are movably connected with support plates through bearings, and the front sides of both the support plates are fixedly installed on the rear side of the box.

[0011] Further preferably, the left and right sides of the inner cavity of the box are fixedly installed with guide rods, and both the tooth plates are slidably connected with the surfaces of both the guide rods.

[0012] Further preferably, the middle end of the bottom of the inner cavity of the box is provided with a moving groove, and the bottoms of both the moving blocks are slidably connected in the inner cavities of the moving grooves.

[0013] Further preferably, the front and rear sides of the bottom of the inner cavity of the box are provided with limiting grooves, and the front and rear sides of both the clamping plates are slidably connected in the inner cavities of both the limiting grooves.

[0014] Further preferably, the top of the box is provided with a lifting mechanism, the lifting mechanism comprises a limiting frame, the top of the limiting frame is fixedly installed with a rotary motor, the output end of the rotary motor is fixedly connected with a lead screw, the surface of the lead screw is threadedly connected with a screw block, the inner surfaces of the screw block are slidably connected with the surfaces of the left and right sides of the limiting frame, the left and right sides of the bottom of the screw block are fixedly installed with vertical rods, and the bottoms of both the vertical rods are fixedly connected with the top of a pressure sensor.

[0015] Further preferably, the left and right sides of the top of the box are provided with circular grooves, both the vertical rods penetrate the inner cavities of both the circular grooves and extend into the inner cavity of the box.

[0016] The embodiment of the utility model has the following advantages due to the adoption of the above technical scheme:

[0017] I. This utility model, through the setting of a clamping mechanism, uses the output of a bidirectional motor to engage the active and driven bevel gears, causing the transmission gear to rotate. This drives the gear plate downwards, causing the connecting rod to flip and push the moving block and clamping plate inwards. The clamping plate effectively limits the position of the electronic scale during calibration, preventing displacement of the scale due to pressure plate contact. This would prevent the pressure plate from being in the center of the scale, thus causing a deviation between the pressure sensor reading and the scale's reading, affecting normal calibration. This improves the stability of the electronic scale test and facilitates operation.

[0018] II. This utility model, by setting a support plate, can support the optical rod, preventing it from detaching from the bidirectional motor connection after prolonged use, thus affecting the subsequent transmission of kinetic energy. By setting a guide rod, the movement direction of the toothed plate can be limited, preventing the toothed plate from deviating during movement and affecting the clamping of the electronic scale. By setting a moving groove, the movement of the moving block can be limited, preventing the moving block from deviating during movement and affecting the clamping effect of the electronic scale. By setting a limiting groove, the movement of the clamping plate can be limited, improving the stability of the clamping plate during movement and effectively preventing the clamping effect of the electronic scale from deteriorating. By setting a lifting mechanism, the output of the rotary motor causes the lead screw to rotate, driving the screw block and vertical rod to move downward. At this time, the vertical rod drives the pressure sensor and pressure plate to move downward synchronously. By comparing the downward pressure value of the pressure plate with the value of the electronic scale, it is convenient to perform subsequent calibration of the electronic scale. By setting a circular groove, the movement of the vertical rod can be limited, preventing the vertical rod from deviating during movement and affecting the up and down movement of the pressure plate.

[0019] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0022] Figure 2 It is the lifting mechanism structure schematic view of the utility model;

[0023] Figure 3 It is the limiting frame dismounting structure schematic view of the utility model;

[0024] Figure 4 It is the bidirectional motor structure schematic view of the utility model;

[0025] Figure 5 It is the clamping mechanism structure schematic view of the utility model.

[0026] The figure mark: 1, box body;2, clamping mechanism;201, bidirectional motor;202, polished rod;203, driving bevel gear;204, driven bevel gear;205, connecting rod;206, transmission gear;207, toothed plate;208, hard spring;209, connecting rod;210, moving block;211, clamping plate;212, guide rod;213, moving groove;214, limiting groove;215, support plate;3, lifting mechanism;301, limiting frame;302, rotary motor;303, screw;304, screw block;305, vertical rod;306, circular groove;4, pressure sensor;5, pressure plate;6, pressure display panel. DETAILED DESCRIPTION

[0027] Hereinafter, only certain exemplary embodiments are simply described.As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the utility model.Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0028] The embodiments of the utility model are explained in detail below in combination with the drawings.

[0029] Embodiment 1

[0030] As shown in Figure 1 , Figure 4 and Figure 5 , the utility model embodiment provides a kind of calibration equipment for high-precision electronic scale measurement, including box body 1, pressure sensor 4 is arranged in the inner cavity of box body 1, the bottom of pressure sensor 4 is fixedly installed with pressure plate 5, and pressure display panel 6 is fixedly installed at the top of box body 1;

[0031] The surface of the box body 1 is provided with a clamping mechanism 2, the clamping mechanism 2 includes a bidirectional motor 201 and a toothed plate 207, the bidirectional motor 201 is fixedly installed on the rear side of the box body 1, both toothed plates 207 are located on the left and right sides of the inner cavity of the box body 1, the bottom of both toothed plates 207 is fixedly connected with a hard spring 208, the inner side of both toothed plates 207 is movably connected with a connecting rod 209, the other end of both connecting rods 209 is movably connected with a moving block 210, the inner side of both moving blocks 210 is fixedly installed with a clamping plate 211, the output end of the bidirectional motor 201 on the left and right sides is fixedly connected with a light rod 202, the outer side of both light rods 202 is movably connected with a driving bevel gear 203, the left and right sides of the rear side of the box body 1 is movably connected with a driven bevel gear 204, the surface of both driven bevel gears 204 is engaged with the surface of both driving bevel gears 203, the front side of both driven bevel gears 204 is fixedly connected with a connecting rod 205, the surface of both connecting rods 205 is fixedly installed with a transmission gear 206, the surface of both transmission gears 206 is engaged with the surface of both toothed plates 207, the surface of both light rods 202 is movably connected with a support plate 215 through a bearing, the front side of both support plates 215 is fixedly installed on the rear side of the box body 1, the left and right sides of the inner cavity of the box body 1 is fixedly installed with a guide rod 212, both toothed plates 207 is movably connected with the surface of both guide rods 212, the middle end of the bottom of the inner cavity of the box body 1 is provided with a moving groove 213, the bottom of both moving blocks 210 is movably connected in the inner cavity of the moving groove 213, the front and rear sides of the bottom of the inner cavity of the box body 1 is provided with a limiting groove 214, the front and rear sides of both clamping plates 211 is movably connected in the inner cavity of both limiting grooves 214.

[0032] By setting the clamping mechanism 2, through the output of the bidirectional motor 201, the driving bevel gear 203 and the driven bevel gear 204 cooperate with each other, and make the transmission gear 206 rotate, at this time the transmission gear 206 drives the tooth plate 207 to move downward, and makes the connecting rod 209 overturn, and pushes the moving block 210 and the clamping plate 211 to move inward, through the clamping of the clamping plate 211, the position of the electronic scale during calibration can be limited, avoid due to the contact of the pressure plate 5, cause the position of the electronic scale to produce deviation, make the pressure plate 5 unable to be in the center area of the electronic scale, thereby causing the pressure value of the pressure sensor 4 and the pressure value fed back by the electronic scale to produce deviation, thereby affecting the normal calibration work, improve the stability of the electronic scale test, convenient for the operator to use, by setting the support plate 215, can support the light rod 202, avoid the light rod 202 from the connection of the bidirectional motor 201 after a long time use, thereby affecting the subsequent kinetic energy conduction work, by setting the guide rod 212, can limit the moving direction of the tooth plate 207, avoid the tooth plate 207 to move when producing deviation, thereby affecting the clamping work of the electronic scale, by setting the moving groove 213, can limit the movement of the moving block 210, avoid the moving block 210 to move when producing deviation, thereby affecting the clamping effect of the electronic scale, by setting the limiting groove 214, can limit the movement of the clamping plate 211, improve the stability of the clamping plate 211 when moving, effectively avoid the effect of clamping the electronic scale to be worse.

[0033] Embodiment 2

[0034] As shown in Figure 2 and Figure 3 , in one embodiment, the top of the box 1 is provided with a lifting mechanism 3, the lifting mechanism 3 includes a limiting frame 301, the top of the limiting frame 301 is fixedly installed with a rotary motor 302, the output end of the rotary motor 302 is fixedly connected with a lead screw 303, the surface of the lead screw 303 is threadedly connected with a screw block 304, the inner surface of the screw block 304 is slidably connected to the surface of the left and right sides of the limiting frame 301, the left and right sides of the bottom of the screw block 304 are fixedly installed with a vertical rod 305, the bottom of the two vertical rods 305 is fixedly connected to the top of the pressure sensor 4, the left and right sides of the top of the box 1 are provided with a circular groove 306, the two vertical rods 305 extend into the inner cavity of the box 1 through the inner cavity of the two circular grooves 306.

[0035] Through setting the lifting mechanism 3, through the output of the rotating motor 302, the lead screw 303 is caused to rotate, and the screw block 304 and the vertical rod 305 are caused to move downwards, at this time the vertical rod 305 causes the pressure sensor 4 and the pressure plate 5 to move downwards synchronously, through comparing the downward pressing value of the pressure plate 5 with the electronic scale value, subsequent calibration work of the electronic scale is facilitated, through setting the circular groove 306, the movement of the vertical rod 305 can be limited, deviation of the vertical rod 305 when moving is avoided, thereby affecting the up-down movement work of the pressure plate 5.

[0036] The utility model discloses a work time: first electronic scale is placed in the inner side of clamping plate 211, subsequently through the output of bidirectional motor 201, at this time the light pole 202 causes the rotation of driving bevel gear 203, and through the mutual cooperation of driving bevel gear 203 and driven bevel gear 204, connecting rod 205 synchronous generation rotates, and connecting rod 205 causes the rotation of transmission gear 206, and through the mutual cooperation of to the toothed plate 207, make the toothed plate 207 move downwards, at this time connecting rod 209 generates the overturning and pushes the moving block 210 and clamping plate 211 and moves to the inboard, thereby the clamping work of electronic scale is completed, subsequently through the output of rotating motor 302, make the lead screw 303 rotate, and the screw block 304 and the vertical rod 305 move downwards, at this time the pressure sensor 4 and the pressure plate 5 move downwards synchronously, make the pressure plate 5 carry out the downward pressing work to electronic scale.

[0037] The above, only for the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled in the art person in the utility model disclosed technical range can easily think of its various changes or replacement, these should cover in the protection scope of the utility model. Therefore, the protection scope of the utility model should be the protection scope of the claim.

Claims

1. A high-precision electronic scale metrological calibration apparatus comprising a box (1), characterized in that, The inner cavity of the box (1) is provided with a pressure sensor (4), the bottom of the pressure sensor (4) is fixedly installed with a pressure plate (5), and the top of the box (1) is fixedly installed with a pressure display panel (6). The box (1) is provided with a clamping mechanism (2) on the surface, the clamping mechanism (2) comprises a bidirectional motor (201) and a gear plate (207), the bidirectional motor (201) is fixedly installed on the rear side of the box (1), two gear plates (207) are located on the left and right sides of the inner cavity of the box (1), the bottoms of the two gear plates (207) are fixedly connected with hard springs (208), the inner sides of the two gear plates (207) are movably connected with connecting rods (209), the other ends of the two connecting rods (209) are movably connected with moving blocks (210), and the inner sides of the two moving blocks (210) are fixedly installed with clamping plates (211).

2. A high precision electronic scale calibration apparatus according to claim 1, characterized in that: The output ends on the left and right sides of the bidirectional motor (201) are fixedly connected with light rods (202), the outer sides of the two light rods (202) are movably connected with driving bevel gears (203), the left and right sides of the rear side of the box (1) are movably connected with driven bevel gears (204), the surfaces of the two driven bevel gears (204) are meshed with the surfaces of the two driving bevel gears (203), the front sides of the two driven bevel gears (204) are fixedly connected with connecting rods (205), the surfaces of the two connecting rods (205) are fixedly installed with transmission gears (206), and the surfaces of the two transmission gears (206) are meshed with the surfaces of the two gear plates (207).

3. A high precision electronic scale calibration apparatus according to claim 2, wherein: The surfaces of the two light rods (202) are movably connected with support plates (215) through bearings, and the front sides of the two support plates (215) are fixedly installed on the rear side of the box (1).

4. A high precision electronic scale calibration apparatus as claimed in claim 1, wherein: The left and right sides of the inner cavity of the box (1) are fixedly installed with guide rods (212), and the two gear plates (207) are movably connected to the surfaces of the two guide rods (212).

5. A high precision electronic scale calibration apparatus as claimed in claim 1, wherein: The middle end of the bottom of the inner cavity of the box (1) is provided with a moving groove (213), and the bottoms of the two moving blocks (210) are movably connected in the inner cavity of the moving groove (213).

6. A high precision electronic scale calibration apparatus as claimed in claim 1, wherein: The front and rear sides of the bottom of the inner cavity of the box (1) are provided with limiting grooves (214), and the front and rear sides of the two clamping plates (211) are movably connected in the inner cavities of the two limiting grooves (214).

7. A high precision electronic scale calibration apparatus as claimed in claim 1, wherein: The top of the box (1) is provided with a lifting mechanism (3), the lifting mechanism (3) includes a limiting frame (301), the top of the limiting frame (301) is fixedly installed with a rotary motor (302), the output end of the rotary motor (302) is fixedly connected with a lead screw (303), the surface of the lead screw (303) is threadedly connected with a screw block (304), the inner surfaces of the screw block (304) are slidably connected to the surfaces of the left and right sides of the limiting frame (301), and the left and right sides of the bottom of the screw block (304) are fixedly installed with vertical rods (305), and the bottoms of the two vertical rods (305) are fixedly connected to the top of the pressure sensor (4).

8. A high precision electronic scale calibration apparatus according to claim 7, wherein: The left and right sides of the top of the box (1) are provided with circular grooves (306), and the two vertical rods (305) penetrate the inner cavities of the two circular grooves (306) and extend into the inner cavity of the box (1).

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