CN219474753U

CN219474753U - Integrated bridge type weighing sensor

Info

Publication number: CN219474753U
Application number: CN202320535844.0U
Authority: CN
Inventors: 盛亚北; 徐玉芳
Original assignee: Ningbo Shengshi Innovation Engineering Machinery Co ltd
Current assignee: Ningbo Shengshi Innovation Engineering Machinery Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-08-04
Anticipated expiration: 2033-03-15

Abstract

The utility model relates to an integral bridge type weighing sensor, which comprises: the bridge type main body comprises a base part and an elastic body part, wherein the base part is of an annular structure, two ends of the elastic body part are erected and connected to two ends of the base part, and the middle area of the elastic body part is suspended relative to the base part. A strain gage assembly mounted to the elastomeric portion; the pressure ball is movably erected in the middle area of the elastic body part; the pressure head is movably erected on the pressure ball. The base part and the elastic body part are of an integrated structure, and are processed by the same material, so that the overall structure is high in strength. The bridge type main body is assembled and fixed through the base part, so that convenience in assembly and debugging is improved. The base part and the elastic body part are of an integrated structure, the whole material is stressed and strain is balanced, the stability and uniformity of stressed deformation are improved, and the strain gauge component is sensitive to detection.

Description

Integrated bridge type weighing sensor

Technical Field

The utility model relates to the technical field of sensors, in particular to an integrated bridge type weighing sensor.

Background

The bridge type sensor is a weighing sensor commonly used in the production of automobile scales, rail scales, axle weight scales, ground scales, storage scales and the like, and has the characteristics of large force value, unbalanced load resistance and automatic resetting and aligning of a combined pressure head.

Chinese patent CN213397294U discloses a bridge sensor and balance body, including elastomer, floorbar and base, be provided with the foil gage in the elastomer, the elastomer with be provided with the tie-layer between the floorbar, the tie-layer is with elastomer and floorbar fixed connection, the base is fixed in the floorbar is kept away from the one end of elastomer, swing subassembly has been installed at the top of elastomer, swing subassembly is used for contradicting with the outside balance body, the elastomer facial make-up is equipped with the signal component who is used for with outside measuring instrument signal connection.

The bridge type sensor adopts a split structure, wherein a connecting layer is arranged between the elastic body and the bottom beam, and the elastic body is fixedly connected with the bottom beam through the connecting layer. Because the existing bridge sensor adopts a split structure, the technical problems of low processing precision, poor mechanical property and complex installation exist, and therefore, the bridge sensor needs to be improved.

Disclosure of Invention

In order to overcome the problems in the related art, the embodiment of the utility model provides an integrated bridge type weighing sensor.

According to a first aspect of an embodiment of the present utility model, there is provided an integral bridge load cell comprising:

the bridge type main body comprises a base part and an elastic body part which are integrally structured, the base part is of an annular structure, two ends of the elastic body part are erected and connected with two ends of the base part, and the middle area of the elastic body part is suspended relative to the base part;

a strain gage assembly mounted to the elastomeric portion;

the pressure ball is movably erected in the middle area of the elastic body part;

the pressure head is movably erected on the pressure ball.

In an embodiment, strain grooves are respectively arranged on two opposite sides of the elastic body, and the strain gauge component is installed in the strain grooves.

In an embodiment, the base portion is provided with mounting holes penetrating through the base portion at intervals, and the base portion is one of a circular ring shape, an elliptical ring shape and a rectangular ring shape.

In one embodiment, the base portion includes a recessed annular groove, the elastomeric portion spans the annular groove, and the bridge body includes a bottom protector mounted within the annular groove, the bottom protector being located below the elastomeric portion.

In one embodiment, the bottom guard is made of an elastomeric material.

In one embodiment, the base portion includes at least one mounting notch, and the bridge body further includes a shield mounted to the mounting notch.

In one embodiment, the edge of the shield is flush with the edge of the base portion.

In one embodiment, the shield is made of an elastic material.

In an embodiment, the mounting notch and the elastomer portion are disposed opposite to each other on the base portion.

In an embodiment, the bridge body further comprises an auxiliary frame mounted to the elastic body, the auxiliary frame is provided with an arc-shaped groove, and the pressure ball is limited to the arc-shaped groove.

The technical scheme provided by the embodiment of the utility model can comprise the following beneficial effects: the base part and the elastic body part are of an integrated structure, and are processed by the same material, so that the overall structure is high in strength. The bridge type main body is assembled and fixed through the base part, so that convenience in assembly and debugging is improved. The base part and the elastic body part are of an integrated structure, the whole material is stressed and strain is balanced, the stability and uniformity of stressed deformation are improved, and the strain gauge component is sensitive to detection.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic diagram of an integral bridge load cell according to an exemplary embodiment.

Fig. 2 is a schematic structural view of a bridge body according to an exemplary embodiment.

Fig. 3 is a schematic top view of a bridge body shown according to an exemplary embodiment.

Fig. 4 is a schematic cross-sectional view of the structure at A-A in fig. 3.

Fig. 5 is a schematic cross-sectional structural view of a bridge body shown according to an exemplary embodiment.

In the figures, a bridge body 10; a base portion 11; a mounting hole 111; annular groove 112; a mounting notch 113; an elastic body 12; an arc-shaped groove 121; a strain tank 122; a bottom protector 13; a shutter 14; an auxiliary frame 15; a pressure ball 20; a ram 30; a strain gage assembly 40.

Detailed Description

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the present utility model, unless explicitly stated and limited otherwise, the term "coupled" or the like should be interpreted broadly, as it may be fixedly coupled, detachably coupled, or integrally formed, as indicating the relationship of components; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two parts or interaction relationship between the two parts. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 5, the present utility model provides an integral bridge type weighing sensor, which comprises a bridge type main body 10, a strain gauge assembly 40, a pressure ball 20 and a pressure head 30, wherein the bridge type main body 10 is mounted on a fixed base, the spherical pressure ball 20 is pressed and connected above the bridge type main body 10, and the pressure head 30 is pressed and connected above the pressure ball 20 and connected with a bearing object, so as to form pressure detection in a vertical direction. The strain gage assembly 40 is attached to the bridge body 10, outputs an electrical signal based on the deformation amount of the bridge body 10, and the meter outputs a corresponding measurement value based on the electrical signal.

The bridge body 10 includes a base portion 11 and an elastic body portion 12 which are integrally formed, and the base portion 11 and the elastic body portion 12 are integrally formed and are formed of the same material, so that the overall structural strength is high. The base part 11 is of an annular structure, the elastic body part 12 is of a strip-shaped block structure, two ends of the elastic body part 12 are connected to two ends of the base part 11 in an erected mode, and the middle area of the elastic body part 12 is suspended relative to the base part 11. The pressure ball 20 is movably installed in the middle area of the elastic body 12, so that the middle of the elastic body 12 is under pressure, and opposite forces are provided by two ends of the elastic body 12. The base part 11 and the elastic body part 12 are of an integrated structure, the stress and the strain of the whole material are balanced, the stability and the uniformity of the stress deformation are improved, and the strain gauge assembly 40 is sensitive to detection.

The strain gage assembly 40 is mounted on the elastic body 12, wherein strain grooves 122 are respectively arranged on opposite sides of the elastic body 12, and the strain gage assembly 40 is mounted in the strain grooves 122. When the pressure transmitted by the pressure ball 20 acts on the middle portion of the elastic body 12, the groove wall of the strain groove 122 is elastically deformed, and the strain gage assembly 40 can output a corresponding voltage signal according to the amount of elastic deformation of the groove bottom of the strain groove 122, where the voltage signal corresponds to the load capacity.

In an embodiment, the base portion 11 is provided with mounting holes 111 at intervals, and the mounting holes 111 penetrate through the base portion 11 and are used for inserting fasteners to detachably assemble the integral bridge type weighing sensor on a fixed foundation, so that the integral bridge type weighing sensor is convenient to assemble. Preferably, the base portion 11 has an annular structure, wherein the base portion 11 has one of a circular ring shape, an elliptical ring shape, and a rectangular ring shape. The annular structure is convenient to install, and the two ends of the elastic body 12 are erected on the base part 11, so that the middle of the elastic body 12 is suspended, and the elastic body 12 is elastically bent and deformed in the annular space towards the base part 11 under the stress condition, and the base part 11 realizes automatic clearance.

Further, the base portion 11 includes a recessed annular groove 112, and the elastomeric portion 12 spans the annular groove 112. The annular groove 112 is a groove structure provided around the base portion 11, and its recessed plane is the intersecting plane of the base portion 11 and the elastic body portion 12. The annular groove 112 has an inner diameter smaller than an outer diameter of the base portion 11, thereby constituting a stepped hole structure, and a sandwiching space is formed between the elastic body portion 12 and the annular groove 112.

Bridge body 10 includes a bottom protector 13 mounted within annular groove 112, bottom protector 13 being located below elastomeric portion 12. The bottom protector 13 serves to protect the surface of the downward side of the elastomeric body 12 from cement or dirt adhering to the elastomeric body 12 on a fixed basis, resulting in inaccurate metering. Optionally, two ends of the bottom protection member 13 are clamped in a clamping space between the elastic body 12 and the annular groove 112, so as to realize suspension arrangement and avoid affecting the elastic deformation of the middle part of the elastic body 12.

Further, the bottom protector 13 is made of an elastic material, for example, the bottom protector 13 is made of rubber, plastic, or the like. Optionally, the bottom protector 13 is a plate-like structure to provide a function of blocking dirt such as cement. Optionally, the bottom protection 13 is provided in a U-shaped cover structure to cover at least part of the bottom and sides of the elastomer section 12.

Further, the base portion 11 includes at least one mounting notch 113, and the bridge body 10 further includes a shield 14 mounted to the mounting notch 113. The shield 14 serves to protect the lateral direction of the base portion 11 so as to prevent the lateral direction of the base portion 11 from being adhesively secured by cement or other adhesive material. The shield 14 is of removable or replaceable construction to provide good tamper protection. Optionally, the mounting notch 113 is a partial notch structure to provide partial protection. Alternatively, the mounting notch 113 is an annular structure that is distributed around the bottom of the base portion 11.

Preferably, the edges of the shield 14 are flush with the edges of the base portion 11 to enhance overall aesthetics and dimensional controllability of the installation. Preferably, the shield 14 is made of an elastomeric material. For example, the shield 14 may be manufactured from rubber, nylon, plastic or other materials.

In one embodiment, the mounting notch 113 and the elastic body 12 are disposed opposite to the base 11. The mounting notch 113 is provided as a partial notch structure, two ends of the elastic body 12 are respectively connected to the base 11 in a erection mode, and the mounting notch 113 is positioned below the erection positions of the elastic body 12 and the base 11 to protect the elastic body 12.

In one embodiment, the bridge body 10 further comprises an auxiliary frame 15 mounted to the elastomeric body 12, the auxiliary frame 15 being provided with an arcuate recess, the pressure ball 20 being defined in the arcuate recess. An arc groove 121 is provided in the middle of the elastic body 12, and the pressure ball 20 is supported and limited by the arc groove 121. The auxiliary frame 15 is mounted in the middle of the elastic body 12, and the arc-shaped grooves are extension curved surfaces of the arc-shaped grooves 121, so as to jointly define the pressure ball 20, and the limiting effect is good.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. An integral bridge load cell, the integral bridge load cell comprising:

a strain gage assembly mounted to the elastomeric portion;

the pressure head is movably erected on the pressure ball.

2. The integral bridge load cell of claim 1 wherein said elastomeric portion is provided with strain grooves on opposite sides thereof, respectively, said strain gage assembly being mounted within said strain grooves.

3. The integral bridge type load cell of claim 1 wherein said base portions are spaced apart with mounting holes therethrough, said base portions being one of annular, elliptical annular, and rectangular annular.

4. The integral bridge load cell of claim 1 wherein said base portion includes a recessed annular groove, said elastomeric portion spans said annular groove, said bridge body including a bottom protector mounted within said annular groove, said bottom protector being located below said elastomeric portion.

5. The integral bridge load cell of claim 4 wherein said bottom guard is made of an elastomeric material.

6. The integral bridge load cell of claim 4 wherein said base portion includes at least one mounting notch, said bridge body further including a shield mounted to said mounting notch.

7. The integral bridge load cell of claim 6 wherein an edge of said shield is flush with an edge of said base portion.

8. The integral bridge load cell of claim 6 wherein said shield is made of an elastomeric material.

9. The integral bridge load cell of claim 6 wherein said mounting notch is disposed in said base portion opposite said elastomeric portion.

10. The integral bridge load cell of claim 1 wherein said bridge body further comprises an auxiliary frame mounted to said elastomeric portion, said auxiliary frame being provided with an arcuate recess, said pressure ball being defined in said arcuate recess.