CN216050256U

CN216050256U - Hopper scale stacking-free calibration device in form of upper dynamometer

Info

Publication number: CN216050256U
Application number: CN202121857820.4U
Authority: CN
Inventors: 周景琪
Original assignee: Ningbo Yinhe Automatic Control Equipment Co ltd
Current assignee: Ningbo Yinhe Automatic Control Equipment Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-03-15
Anticipated expiration: 2031-08-09

Abstract

The utility model relates to a hopper scale of overhead dynamometer form exempts from to pile up puts calibration equipment, including hopper fulcrum board, hopper fulcrum board top fixed connection is in one side of the hopper of hopper scale, be provided with spiral jack on the hopper fulcrum board, be provided with the dynamometer on the spiral jack, the top of dynamometer is connected with the stationary plane, the axis of hopper scale and spiral jack's piston rod parallel arrangement, the hopper is in unsettled state. Driving the screw jack to enable the force applied by the screw jack to display a standard indicating value through a dynamometer; the acting force of the screw jack passes through the fixed surface reaction force feeding hopper, and the actual indicating value is displayed on the sensor of the hopper; different loads are equally transmitted to the dynamometer which is calibrated in advance, and the dynamometer verifies the sensor of the hopper, so that the traditional verification method is changed. The method and the device have the advantages of being convenient to operate and high in calibration precision.

Description

Hopper scale stacking-free calibration device in form of upper dynamometer

Technical Field

The application relates to the field of metering and checking devices, in particular to a hopper scale stacking-free checking device in an upper dynamometer form.

Background

A hopper scale, also called bulk material scale, is a weighing electronic scale for measuring the weight of bulk materials. The intelligent weighing system mainly comprises a weighing hopper, a bracket, a pneumatic valve, a high-precision weighing sensor, a junction box, a signal cable, an intelligent weighing display and the like. The hopper scale can accurately calculate the weight of the material, and is convenient for people to control and use the material, so that the hopper scale is widely applied to industries such as metallurgy, electric power, cement, chemical industry, building materials, ceramics, grain depots, docks and the like.

The hopper scale needs to be subjected to precision calibration after being used for a certain time, and two methods are generally adopted for calibrating and calibrating the hopper scale, namely, a standard weight is used, so that a large amount of time and labor are needed, and the hopper needs to be uniformly loaded with enough weights (more than 80 percent) and has great difficulty; secondly, a mechanical force measuring ring is used, the method is low in calibration precision and complex in calculation, the calibration precision is difficult to achieve due to high precision requirements, and the two calibration methods have the defect of complex operation.

In view of the above-mentioned related art, the inventor believes that the hopper scale has the problems of complicated operation and poor working efficiency during verification.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the hopper scale has the operation complicacy when the check-up to improve work efficiency, this application provides a hopper scale of overhead dynamometer form avoids the weight to put calibration equipment.

The application provides a put things in good order check-up device exempts from of overhead dynamometer form adopts following technical scheme:

the utility model provides a hopper scale of overhead dynamometer form exempts from to pile up puts calibration equipment, includes hopper fulcrum board, hopper fulcrum board top fixed connection is in one side of the hopper of hopper scale, be provided with spiral jack on the hopper fulcrum board, be provided with the dynamometer on the spiral jack, the top of dynamometer is connected with the stationary plane, the axis of hopper scale and spiral jack's piston rod parallel arrangement, the hopper is in unsettled state.

By adopting the technical scheme, the screw jack is driven to enable the force applied by the screw jack to display a standard indication value through the dynamometer; the acting force of the spiral jack is transmitted to the hopper through the hopper fulcrum plate by the reaction force of the fixed surface, and the actual indicating value is displayed on the sensor of the hopper; different loads are equally transferred to the dynamometer which is calibrated in advance, and the dynamometer verifies the sensor of the hopper, so that the traditional verification method is changed, the operation is convenient, and the calibration precision is high.

Optionally, the device further comprises a bottom plate, a support is arranged on the bottom plate, a pressure head of the dynamometer is in contact with the top of the support, and the dynamometer and the screw jack are both arranged in the support.

Through adopting above-mentioned technical scheme, fix dynamometer and screw jack through support and bottom plate, make screw jack's effort when using transmit hopper fulcrum board through the support top, and then make the hopper have and receive equal decurrent effort to the accuracy of check-up has been guaranteed.

Optionally, a sensor is arranged on the hopper, and the sensor includes one of a tension sensor and a pressure sensor.

Through adopting above-mentioned technical scheme, the hopper can be selected its sensor that sets up according to the position needs to increased the diversification of hopper balance kind, its selectivity obtains improving.

Optionally, the tension sensor is connected to one side of the hopper through a connecting plate, an axis of the tension sensor is parallel to an axis of the hopper, and the connecting plate is arranged above the supporting point plate of the hopper.

By adopting the technical scheme, the force borne by the hopper fulcrum plate is acted on the hopper equally, and the tension sensor timely and accurately feeds back the change of the hopper, so that the tension sensor and the dynamometer are compared and checked, and the effect of high calibration precision is achieved.

Optionally, the top of the tension sensor is fixed on the lower surface of the top plate.

Optionally, the pressure sensor is connected to one side of the hopper through a hopper fulcrum plate, the pressure sensor and the screw jack are arranged up and down, and the pressure sensor is arranged on the bottom plate.

By adopting the technical scheme, the received force is acted on the hopper by the hopper fulcrum plate, the pressure sensor timely and accurately feeds back the change of the hopper, and therefore the pressure sensor and the dynamometer are compared and checked, and the effect of high calibration precision is achieved.

Optionally, the hopper fulcrum plate is connected with the hopper through welding.

By adopting the technical scheme, because the hopper fulcrum plate and the dynamometer bear the same pressure, the strength of the joint of the hopper fulcrum plate and the hopper is enough, and the joint of the hopper fulcrum plate and the hopper is high in strength and good in sealing performance by adopting a welded connection mode, so that the conditions of no desoldering and deformation of the hopper fulcrum plate under the maximum load are ensured.

Optionally, a plurality of hopper scale stacking-free calibration devices in the form of the upper dynamometers are arranged, and the hopper stacking-free calibration devices in the form of the plurality of upper dynamometers are uniformly arranged on two sides of the hopper relative to the axis of the hopper.

Through adopting above-mentioned technical scheme, all install calibration device at many fulcrums, be convenient for observe each fulcrum atress balanced condition to improve the accuracy of check-up.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the force measuring instrument is arranged on the screw jack, the screw jack performs jacking weight, and the force measuring instrument displays a standard indication value of the screw jack; the force of the spiral jack reacts on the supporting point plate of the feeding hopper through the fixed surface, and the hopper sensor feeds back the force of the spiral jack and displays an actual indicating value; different loads are equally transferred to the dynamometer which is calibrated in advance, and the dynamometer verifies the sensor of the hopper, so that the traditional verification method is changed, the operation is convenient, and the calibration accuracy is high;

2. the sensor of the hopper can be a tension sensor or a pressure sensor, and the two sensors are arranged at different positions of the hopper, so that the selectivity of the hopper scale is improved;

3. the hopper scale of the overhead dynamometer form that this application formed exempts from to put things in good order calibration equipment and can evenly set up on the different fulcrums in the both sides of hopper along the hopper axis, is favorable to improving the accuracy of calibration through observing each fulcrum atress balance condition like this.

Drawings

Fig. 1 is an external view schematically showing a hopper scale stacking-free checking device in the form of an upper load cell according to embodiment 1.

Fig. 2 is an external view schematically showing the hopper scale stacking-free checking device in the form of the upper load cell of this embodiment 2.

Description of reference numerals: 1. a hopper fulcrum plate; 2. a hopper; 3. a screw jack; 4. a force measuring instrument; 5. a base plate; 6. a support; 7. a pressure sensor; 8. a tension sensor; 9. a connecting plate; 10. a base; 11. a top plate.

Detailed Description

The present application is described in further detail below with reference to figures 1 and 2.

The embodiment of the application discloses hopper scale of overhead dynamometer form exempts from to put things in good order calibration equipment.

Example 1

Referring to fig. 1, the hopper scale stacking-free calibration device in the form of the overhead dynamometer comprises a bottom plate 5, a support 6 is arranged on the upper surface of the bottom plate 5, a base 10 is further arranged on the upper surface of the bottom plate 5, pressure sensors 7 are symmetrically arranged on the base 10 relative to the axis of a hopper 2 of the hopper scale, the axis of each pressure sensor 7 is parallel to the axis of the hopper 2, a hopper fulcrum plate 1 is arranged on each pressure sensor 7, the hopper fulcrum plate 1 is horizontally arranged, the hopper fulcrum plate 7 is welded on the side surface of the hopper 2, each pressure sensor 7 is connected with an instrument, the hopper 2 is in a suspended state, and each pressure sensor 7 is used for converting gravity borne by the hopper 2 into a pressure signal and outputting the pressure signal through the instrument; firm connection through the welding between hopper fulcrum plate 1 and the hopper 2, hopper fulcrum plate 1 upper surface is provided with screw jack 3, screw jack 3's piston rod and hopper 2's axis parallel arrangement, and screw jack 3's piston rod is connected with dynamometer 3, dynamometer 3's pressure head and support 6's top butt, and screw jack 3 and dynamometer 4 all set up in support 6. The YHS-2C type wireless portable dynamometer is used in the embodiment, the dynamometer is wirelessly connected with a display, the display is in simultaneous communication with 2 dynamometers, the sum of measurement data is automatically calculated and displayed, a calibrator can hold the display to operate the dynamometer in front of the dynamometer far away from a pressure sensor, and therefore a calibration task can be quickly, accurately and conveniently completed, and the dynamometer has the advantages of high precision, light weight, convenience in carrying, simplicity in use, high reliability and the like.

The implementation principle of the embodiment 1 is as follows: operating the screw jack 3 to enable the acting force of the screw jack to display a standard indicating value through the dynamometer 4; the acting force of the screw jack 3 reacts on the feeding hopper fulcrum plate 1 through the support 6, the force borne by the feeding hopper fulcrum plate 1 is transmitted to the feeding hopper 2, the feeding hopper 2 bears downward pressure, the pressure borne by the feeding hopper is indicated by the instrument of the pressure sensor 7, and the calibration is completed by comparing the indicated value of the dynamometer 4 with the indicated value of the instrument of the pressure sensor 7; the operation is simple, and the calibration precision is high.

Example 2

Referring to fig. 2, the present embodiment is different from embodiment 1 in that the pressure sensor 7 in embodiment 1 is replaced by a tension sensor 8, the tension sensor 8 is fixedly connected with the hopper 2 through a connecting plate 9, the connecting plate 9 is horizontally arranged, the connecting plate 9 is higher than the hopper fulcrum plate 1, the axis of the tension sensor 8 is horizontally arranged with the axis of the hopper 2, the top of the tension sensor 8 is fixedly connected with a top plate 11, and the tension sensor 8 is connected with a meter.

The principle of example 2 is: operating the screw jack 3 to enable the acting force of the screw jack to display a standard indicating value through the dynamometer 4; the effort of spiral jack 3 passes through support 6 counteraction and is in hopper fulcrum board 1, and hopper fulcrum board 1 will receive power transmission hopper 2, and hopper 2 receives decurrent pressure, and the force sensor 8 that is used in 2 upper portions of hopper feeds back through the instrument to the pressure that hopper 2 receives, through the indicating value of comparing the indicating value of force sensor 8 instrument and the indicating value of dynamometer, accomplishes the check-up to the hopper scale.

The working process of the piling-free calibration device in the form of the upper dynamometer is as follows:

(1) and turning on a power switch of the dynamometer 4 for realizing calibration.

(2) The screw jack 3 is operated to enable the force measuring instrument 3 to bear a micro force, and a pre-tightening force is generated on the support 6.

(3) The gauge of the pressure sensor 7 (tension sensor 8) and the load cell 4 are cleared.

(4) And operating the screw jack 3 and loading to a 100% measuring range to calibrate the measuring range of the pressure sensor 7 (tension sensor 8).

(5) The screw jack is operated to load the dynamometer 4 according to 20%, 40%, 60%, 80% and 100% of the instrument measuring range of the pressure sensor 7 (tension sensor 8), and the accuracy of the hopper scale is calculated by comparing the instrument indication value of the pressure sensor 7 (tension sensor 8) with the indication value of the dynamometer 4 point by point.

(6) And (6) finishing the verification.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a hopper scale of overhead dynamometer form exempts from to put things in good order calibration equipment which characterized in that: including hopper fulcrum board (1), hopper fulcrum board (1) fixed connection is in one side of hopper (2) of hopper balance, be provided with spiral jack (3) on hopper fulcrum board (1), be provided with dynamometer (4) on spiral jack (3), the top of dynamometer (4) is connected with the stationary plane, the axis of hopper balance and the piston rod parallel arrangement of spiral jack (3), hopper (2) are in unsettled state.

2. The hopper scale stacking-free checking device in the form of the overhead load cell of claim 1, wherein: the device is characterized by further comprising a bottom plate (5), wherein a support (6) is arranged on the bottom plate (5), a pressure head of the dynamometer (4) is in contact with the top of the support (6), and the dynamometer (4) and the spiral jack (3) are both arranged in the support (6).

3. The hopper scale stacking-free checking device in the form of the overhead load cell of claim 1, wherein: the hopper (2) is provided with a sensor, and the sensor comprises one of a tension sensor (8) and a pressure sensor (7).

4. The hopper scale stacking-free checking device in the form of the overhead load cell of claim 3, wherein: the tension sensor (8) is connected to one side of the hopper (2) through a connecting plate (9), the axis of the tension sensor (8) is parallel to the axis of the hopper (2), and the connecting plate (9) is arranged above the hopper fulcrum plate (1).

5. The hopper scale stacking-free verification device in the form of the overhead load cell of claim 4, wherein: the top of the tension sensor (8) is fixed on the lower surface of the top plate (11).

6. The hopper scale stacking-free checking device in the form of the overhead load cell of claim 3, wherein: the pressure sensor (7) is connected to one side of the hopper (2) through the hopper fulcrum plate (1), the pressure sensor (7) and the screw jack (3) are arranged up and down, and the pressure sensor (7) is arranged on the bottom plate (5).

7. The hopper scale stacking-free verification device in the form of the overhead load cell of claim 6, wherein: the hopper fulcrum plate (1) is connected with the hopper (2) through welding.

8. The hopper scale stacking-free verification device in the form of an overhead load cell of claim 7, wherein: the hopper scale stacking-free calibration devices in the form of the upper dynamometers are arranged in a plurality of numbers, and the hopper scale stacking-free calibration devices in the form of the plurality of upper dynamometers are uniformly arranged on two sides of the hopper (2) relative to the axis of the hopper.