CN215573270U

CN215573270U - Sensor for weighing and force measuring system of hopper scale

Info

Publication number: CN215573270U
Application number: CN202121851746.5U
Authority: CN
Inventors: 苏国辉
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: 2022-01-18
Anticipated expiration: 2031-08-09

Abstract

The application relates to a sensor for a hopper scale weighing and force measuring system, which comprises an elastic body, a bearing part and a resistance strain gauge, wherein the bearing part is connected with the elastic body, the bottom end of the elastic body is provided with a bottom plate, the top end of the bottom plate is provided with a supporting plate, the supporting plate is arranged between the bottom plate and the elastic body, the bottom plate is provided with a driving assembly used for driving the supporting plate to ascend and descend, and the resistance strain gauge is arranged at the top end of the bottom plate. This application has at the material loading in-process, and the backup pad supports the elastomer, avoids the gravity that the elastomer received to directly exert on resistance strain gauge, accomplishes the back at the material loading, and the backup pad drives the elastomer and falls on resistance strain gauge, and resistance strain gauge detects raw materials weight to avoid the effect of the impact force of raw materials acceleration of gravity production to the influence of sensor.

Description

Sensor for weighing and force measuring system of hopper scale

Technical Field

The application relates to the field of weighing sensors, in particular to a sensor for a weighing and force-measuring system of a hopper scale.

Background

The electronic hopper scale is a discontinuous accumulation automatic electronic scale, does not need additional intervention of personnel in the whole weighing process, and can realize ideal equipment for automatic continuous weighing, quantitative feeding and proportioning as long as the numerical value is set in advance according to the production process.

The existing sensor for weighing comprises an elastic body and a resistance strain gauge, wherein the elastic body generates elastic deformation under the action of external force, so that the resistance strain gauge generates deformation along with the elastic deformation. After the resistance strain gauge deforms, the resistance value of the resistance strain gauge also changes, and the resistance change is converted into an electric signal through a corresponding measuring circuit, so that the measurement is completed.

In view of the related art in the above, the inventors consider that the following drawbacks exist: the raw materials fall from a high position through the hopper, impact force generated by gravity acceleration exists, and the long-term impact force generated by the raw materials due to the gravity acceleration can possibly cause the service life of the sensor to be reduced.

Disclosure of Invention

In order to solve the problem that the impact force generated by the gravity acceleration of the raw material may cause the service life of the sensor to be reduced, the application provides a sensor for a hopper scale weighing and force measuring system.

The utility model provides a sensor for hopper scale dynamometry system that weighs, includes elastomer, the bearing part and the resistance strain gauge of being connected with the elastomer, the bottom of elastomer is equipped with the bottom plate, the top of bottom plate is equipped with the backup pad, the backup pad is located between bottom plate and the elastomer, be equipped with the drive assembly who is used for driving the backup pad lift on the bottom plate, the top of bottom plate is located to the resistance strain gauge.

Through adopting above-mentioned technical scheme, at the material loading in-process, the backup pad supports the elastomer, avoids the gravity that the elastomer received to directly exert on the resistance strain gauge, accomplishes the back at the material loading, and the backup pad drives the elastomer and falls on the resistance strain gauge, and the resistance strain gauge detects raw materials weight to avoid the impact force that raw materials acceleration of gravity produced to the influence of sensor.

Preferably, the number of the supporting plates is two, the two supporting plates are arranged at two ends of the resistance strain gauge, the bottom plate is provided with two notches, the two supporting plates correspond to the two notches one by one, and the supporting plates are arranged in the corresponding notches.

Through adopting above-mentioned technical scheme, the backup pad removes to the breach in under drive assembly's drive after the material loading is accomplished, and the elastomer pressure is on resistance strain gauge this moment for the pressure that resistance strain gauge sensing elastomer bore, thereby survey the quality of raw materials.

Preferably, the top surface of backup pad and the top surface of bottom plate are parallel and level mutually, the lateral wall of backup pad is laminated with the inside wall of breach mutually.

Through adopting above-mentioned technical scheme, the top surface of backup pad is parallel and level mutually with the top surface of bottom plate to avoid the backup pad to hinder elastomer and resistance strain gauge to contact mutually.

Preferably, the drive assembly includes two cylinders, two the bottom of bottom plate is all located to the cylinder, two the bottom plate is all worn to establish from bottom to top by the piston rod of cylinder, two the backup pad and two cylinder one-to-one, the backup pad is fixed to be set up on the piston rod of corresponding cylinder.

Through adopting above-mentioned technical scheme, the cylinder drives the backup pad and reciprocates to drive the elastomer and lift up or make elastomer and resistance strain gauge butt mutually.

Preferably, the top end of the bottom plate is provided with a limiting frame, and the elastic body and the bearing part are both arranged in the limiting frame.

Through adopting above-mentioned technical scheme, spacing frame restricts the position of elastomer and load-bearing part to avoid the position of elastomer and load-bearing part to take place the skew, influence resistance strain gauge to the measurement of raw materials quality.

Preferably, a groove is formed in the inner side wall, attached to the elastic body, of the limiting frame.

Through adopting above-mentioned technical scheme, the elastomer can become thick when taking place deformation, and the setting of recess can ensure that the elastomer is when compressed, still has certain confession self to produce the space of deformation around.

Preferably, a sliding groove is formed in the inner side wall, attached to the bearing part, of the limiting frame, a sliding block is arranged on the outer side wall of the bearing part, and the sliding block is arranged in the sliding groove in a sliding mode.

Through adopting above-mentioned technical scheme, the slider slides and sets up in the spout, and the sliding block moves along with the supporting part when the supporting part removes to make the supporting part slide and set up on spacing frame, strengthened the relation of connection of supporting part and spacing frame.

Preferably, the elastomer is connected with a cable, and one end of the cable connected with the elastomer is provided with a waterproof joint.

Through adopting above-mentioned technical scheme, water has been avoided to signal transmission's influence to waterproof joint's setting for it is more accurate to measure.

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

1. in the feeding process, the support plate supports the elastic body, so that the elastic body is prevented from being directly applied to the resistance strain gauge by gravity, after the feeding is finished, the support plate drives the elastic body to fall on the resistance strain gauge, and the resistance strain gauge detects the weight of the raw material, so that the influence of impact force generated by the gravity acceleration of the raw material on a sensor is avoided;

2. the backup pad removes to the breach under drive assembly's drive after the material loading is accomplished in, the elastomer pressure is on resistance strain gauge this moment for the pressure that resistance strain gauge sensing elastomer bore, thereby survey the quality of raw materials.

Drawings

FIG. 1 is a schematic cross-sectional view of a sensor for a hopper scale weighing and force measuring system in an embodiment of the present application.

FIG. 2 is an exploded view of a sensor for a hopper scale weighing and force measuring system in an embodiment of the present application.

Description of reference numerals: 1. an elastomer; 2. a bearing part; 3. a resistance strain gauge; 4. a base plate; 5. a support plate; 6. a notch; 7. a cylinder; 8. a limiting frame; 9. a groove; 10. a chute; 11. a slider; 12. a cable wire; 13. a waterproof joint.

Detailed Description

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

The embodiment of the application discloses a sensor for a weighing and force-measuring system of a hopper scale.

Referring to fig. 1 and 2, a sensor for a hopper scale weighing and force measuring system comprises an elastic body 1 and a bottom plate 4, wherein a bearing part 2 is fixedly arranged at the top end of the elastic body 1, and the elastic body 1 and the bearing part 2 are both cylinders. A cable 12 is arranged in the bottom plate 4 in a penetrating manner, one end of the cable 12 is connected with the elastic body 1, and a waterproof joint 13 is arranged at one end of the cable 12 connected with the elastic body 1. The fixed spacing frame 8 that is equipped with in top of bottom plate 4, spacing frame 8 are the annular, and inside spacing frame 8 was all located to elastomer 1 and supporting part 2, and the lateral wall of supporting part 2 and the laminating of the inside wall of spacing frame 8 mutually. The inner side wall of the limiting frame 8 and the bearing part 2 which are attached to each other is provided with a sliding groove 10, and the outer side wall of the bearing part 2 is provided with a sliding block 11. Specifically, the slide block 11 and the slide groove 10 are both in a T shape, the slide block 11 is provided with two slide grooves, the slide groove 10 is provided with two slide blocks, and the two slide blocks 11 correspond to the two slide grooves 10 one to one. Two sliding blocks 11 are respectively arranged at two opposite sides of the bearing part 2, and the sliding blocks 11 are arranged in the corresponding sliding grooves 10 in a sliding manner. Offer recess 9 on the spacing frame 8, the bottom of recess 9 flushes with the top of bottom plate 4 mutually, and when the bottom of elastomer 1 and the top of bottom plate 4 laminated mutually, the top of recess 9 flushes with the top of elastomer 1 mutually. In practice, when the raw material is placed on the bearing part 2, the elastic body 1 is deformed by the pressure of the raw material. Elastomer 1's height step-down, elastomer 1's width widen, and the setting of recess 9 makes elastomer 1 have certain deformation space when taking place deformation to avoid spacing frame 8 to influence elastomer 1 to take place deformation.

Referring to fig. 1 and 2, a resistance strain gauge 3 is fixedly arranged at the top end of a bottom plate 4, two support plates 5 are arranged on two sides of the resistance strain gauge 3, and the two support plates 5 are arranged between the bottom plate 4 and an elastic body 1. The bottom plate 4 is provided with a driving component for driving the supporting plate 5 to ascend and descend, and the driving component drives the supporting plate 5 to ascend, so that the elastic body 1 is lifted. In the feeding process, the raw material falls on the bearing part 2 to deform the elastic body 1, and the elastic body 1 is lifted by the supporting plate 5, so that the resistance strain gauge 3 cannot detect the quality of the raw material.

Referring to fig. 1 and 2, two notches 6 are arranged on two sides of the resistance strain gauge 3, the two notches 6 are arranged on the top end of the bottom plate 4, and the two notches 6 correspond to the two support plates 5 one to one. The drive assembly comprises two cylinders 7, the two cylinders 7 are arranged at the bottom end of the bottom plate 4, and the two cylinders 7 correspond to the two gaps 6 one to one. A piston rod of the air cylinder 7 penetrates through the bottom plate 4 from bottom to top and penetrates through the corresponding notch 6, and the supporting plate 5 is fixedly arranged at one end of the piston rod of the air cylinder 7. When the piston rod of cylinder 7 contracts, inside breach 6 was arranged in to backup pad 5, the top surface of backup pad 5 flushed mutually with bottom plate 4's top surface, and the lateral wall of backup pad 5 and the inboard wall of breach 6 laminate mutually. When the supporting plate 5 is placed in the notch 6, the elastic body 1 is abutted to the resistance strain gauge 3 on the top end of the bottom plate 4, and at the moment, the resistance strain gauge 3 receives the pressure of the raw material so as to detect the quality of the raw material.

The implementation principle of the sensor for the hopper scale weighing and force measuring system is as follows: when the feeding operation is carried out, the air cylinder 7 drives the supporting plate 5 to move upwards, the supporting plate 5 lifts the elastic body 1, and the raw materials fall on the bearing part 2 to enable the elastic body 1 to deform; after the material loading is accomplished, cylinder 7 drives backup pad 5 and removes to in breach 6, and elastomer 1 presses on resistance foil gage 3 this moment to make resistance foil gage 3 to the measurement of raw materials quality, avoided the raw materials to cause the damage to the sensor because the impact force that acceleration of gravity produced.

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 sensor that is used for hopper-scale to weigh force measuring system, includes elastomer (1), the portion of bearing (2) and resistance strain gauge (3) of being connected with elastomer (1), its characterized in that: the bottom of elastomer (1) is equipped with bottom plate (4), the top of bottom plate (4) is equipped with backup pad (5), between bottom plate (4) and elastomer (1) are located in backup pad (5), be equipped with the drive assembly who is used for driving backup pad (5) and goes up and down on bottom plate (4), the top of bottom plate (4) is located in resistance foil gage (3).

2. A sensor for a hopper scale weighing and force measuring system according to claim 1, wherein: the two supporting plates (5) are arranged at two ends of the resistance strain gauge (3), the bottom plate (4) is provided with two notches (6), the two supporting plates (5) correspond to the two notches (6) one by one, and the supporting plates (5) are arranged in the corresponding notches (6).

3. A sensor for a hopper scale weighing and force measuring system according to claim 2, wherein: the top surface of backup pad (5) and the top surface looks parallel and level of bottom plate (4), the lateral wall of backup pad (5) is laminated with the inside wall of breach (6) mutually.

4. A sensor for a hopper scale weighing and force measuring system according to claim 1, wherein: the drive assembly comprises two cylinders (7), the two cylinders (7) are arranged at the bottom end of the bottom plate (4), the piston rods of the cylinders (7) penetrate through the bottom plate (4) from bottom to top, the two cylinders are in one-to-one correspondence with the support plates (5) and the two cylinders (7), and the support plates (5) are fixedly arranged on the piston rods of the corresponding cylinders (7).

5. A sensor for a hopper scale weighing and force measuring system according to claim 1, wherein: the top of bottom plate (4) is equipped with spacing frame (8), elastomer (1) and load-bearing part (2) are all located in spacing frame (8).

6. A sensor for a hopper scale weighing and force measuring system according to claim 5, wherein: and a groove (9) is formed in the inner side wall of the limiting frame (8) which is attached to the elastomer (1).

7. A sensor for a hopper scale weighing and force measuring system according to claim 5, wherein: the limiting frame is characterized in that a sliding groove (10) is formed in the inner side wall, attached to the bearing portion (2), of the limiting frame (8), a sliding block (11) is arranged on the outer side wall of the bearing portion (2), and the sliding block (11) is arranged in the sliding groove (10) in a sliding mode.

8. A sensor for a hopper scale weighing and force measuring system according to claim 1, wherein: the elastic body (1) is connected with a cable (12), and one end of the cable (12) connected with the elastic body (1) is provided with a waterproof joint (13).