CN220525080U

CN220525080U - Weighing sensor elastomer

Info

Publication number: CN220525080U
Application number: CN202322046085.4U
Authority: CN
Inventors: 姚明华; 姚奥林
Original assignee: Changzhou Changrong Electronics Co ltd
Current assignee: Changzhou Changrong Electronics Co ltd
Priority date: 2023-08-01
Filing date: 2023-08-01
Publication date: 2024-02-23
Anticipated expiration: 2033-08-01

Abstract

The utility model discloses a weighing sensor elastomer, which comprises a cross beam, wherein a shaft hole is formed in the middle of the cross beam, the middle of the cross beam is arched upwards, strain chambers are formed in two sides of the cross beam, strain sheets are bonded in the strain chambers, the central axis of the strain chambers is parallel to the central axis of the shaft hole, a sealing element is connected in the strain chambers, and a communication channel is formed in the inner side of the cross beam and is communicated with the strain chambers. The utility model can conveniently measure the shaft-shaped workpiece, and the strain chamber is internally provided with the sealing piece, so that the strain gauge can be protected.

Description

Weighing sensor elastomer

Technical Field

The utility model belongs to the technical field of sensors, and particularly relates to a weighing sensor elastomer.

Background

The elastic body of the beam weighing sensor comprises a middle cross beam and fixing parts at two ends of the cross beam, the cross beam and the fixing parts are of an integrated structure, and an upward-protruding bearing table is formed in the center of the upper surface of the cross beam.

The Chinese patent with application number 2009203006451 discloses a weighing sensor elastomer, which belongs to the technical field of weighing sensor elastomer parts. The elastic body is composed of a middle cross beam and fixing parts at two ends, the fixing parts and the cross beam are of an integrated structure, the lower surface of the cross beam is higher than that of the fixing parts, mounting holes are formed in the fixing parts, two blind holes are formed in the front surface and the rear surface of the fixing parts respectively, an upward-protruding bearing table is formed in the middle of the upper surface of the elastic body, and grooves which are symmetrically arranged are formed in two sides of the bearing table respectively. The scheme has the advantages of easy control of sensitivity and higher strength, and solves the problems of difficult control of sensitivity, insufficient strength and the like in the prior beam weighing sensor elastomer technology.

The common point of the above patent scheme and the prior scheme is that the top of the device is supported by a horizontal bearing table, but when the device is used for measuring, parts such as a shaft lever and the like of a cylindrical workpiece are required to be weighed, when the weight of the workpiece in the shape is measured, the shaft lever is required to be fixed through a specific fixing piece, and then the workpiece is placed on the bearing table so as to prevent the workpiece from rolling, and the weight measurement cannot be carried out, so that the weight measurement mode is complicated.

Disclosure of Invention

In order to solve the problems, the utility model provides a weighing sensor elastomer, which comprises a cross beam, wherein the bottom of the cross beam is provided with a gap part, the middle of the cross beam is upwards arched, the arched part is provided with a shaft hole, two sides of the cross beam, which are positioned on the cross beam, are provided with strain chambers, strain sheets are adhered in the strain chambers, the central axis of the strain chambers is parallel to the central axis of the shaft hole, a sealing element is connected in the strain chambers, and the inner side of the cross beam is provided with a communication channel which is communicated with the strain chambers.

Preferably, the tops of the first connecting seat and the second connecting seat are respectively provided with a clamping block, and clamping grooves are formed in two sides of the cross beam.

Preferably, the side of the beam is provided with a connecting part, the connecting part is communicated with a communication channel, and the central axis of the communication channel is perpendicular to the central axis of the strain chamber.

Preferably, the bottom of the cross beam is connected with a fixing part, and the fixing part is provided with a connecting hole.

Preferably, the sealing element is a silica gel element.

Preferably, a connecting groove is arranged at the bottom of the fixing part.

The utility model has the advantages that:

1. in this scheme be equipped with the shaft hole in the centre of crossbeam, the inside cylindrical work piece that can place in shaft hole, the inside back in shaft hole is put into to the work piece, and the crossbeam produces elastic deformation for the foil gage also produces the deformation, produces the signal of telecommunication after the deformation, accomplishes the measurement to the work piece, and this scheme can be convenient for carry out the centre gripping to cylindrical work piece, can measure cylindrical work piece fast.

2. Be equipped with the sealing member on the cavity of meeting an emergency in this scheme, can protect the foil gage, the lead wire of foil gage outwards draws forth through the intercommunication passageway, and this structure can make the elastomer be applied to in the abominable environment, and can promote corresponding life.

Drawings

FIG. 1 is a diagram of the overall structure of the present utility model;

FIG. 2 is a side elevational structural view of the present utility model;

FIG. 3 is a front view of the present utility model;

FIG. 4 is a cross-sectional view of a strain chamber of the present utility model;

fig. 5 is a diagram of the structure of the strain gage in the strain chamber of the utility model.

In the figure: the device comprises a beam 1, a gap part 2, a shaft hole 3, a strain chamber 4, a strain gauge 5, a sealing element 6, a communication channel 7, a connecting part 8, a fixing part 9, a connecting hole 10 and a connecting groove 11.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. Meanwhile, when an element is referred to as being "fixed" or "disposed" on another element, it may be directly on the other element or intervening elements may be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "fixedly connected to" another element, it can be conventionally connected by welding or bolting or gluing. In summary, it will be understood by those of ordinary skill in the art that the specific meaning of the terms described above in this disclosure is to be understood in a specific sense.

Example 1

As shown in fig. 1-3, an elastic body of a weighing sensor comprises a cross beam 1, strain chambers 4 are arranged on two sides of the cross beam 1 on the cross beam 1, a gap part 2 is arranged at the bottom of the cross beam 1, the gap part 2 is reserved for the cross beam 1 to elastically deform, each strain chamber 4 is formed by two symmetrical blind holes in front and back, and a strain gauge 5 is attached to the side wall between the two blind holes. When the beam 1 is deformed under force, the strain gauge 5 attached in the strain chamber 4 is deformed along with the deformation, the resistance value of the strain gauge 5 changes after the deformation, and the resistance change is converted into an electric signal by a corresponding measuring circuit, so that the force is measured.

The middle of the beam 1 is upwards arched and the arched part is provided with a shaft hole 3, the shaft hole 3 is used for placing a cylindrical workpiece, the middle position of the cylindrical workpiece is placed in the shaft hole 3, the axial length of the shaft hole 3 is longer, the length range is 3-4cm, and when weighing is carried out, the longer the length of the shaft hole 3 is, the less easy the cylindrical workpiece falls off. When the cylindrical workpiece is mounted in the shaft hole 3 on the cross beam 1, the gravity of the workpiece can be converted into pressure to the cross beam 1, the pressure direction is downward, and at the moment, the cross beam 1 can deform after being stressed, so that the gravity of the cylindrical workpiece is measured. The beam 1 itself is a thinner product to increase the sensitivity of the beam 1 to testing.

In combination with fig. 4, the central axes of the two strain chambers 4 are parallel to the central axis of the shaft hole 3, the strain gauge 5 is adhered to the strain chambers 4, and the change of the beam 1 can be well sensed, in order to ensure that the strain chambers 4 are not influenced by the outside, sealing elements 6 are arranged on two sides of the strain chambers 4, the sealing elements 6 in the embodiment are silica gel pieces, the strain chambers 4 are sealed by the silica gel, and the phenomenon that water vapor or dust and other substances enter the strain chambers 4 to influence the strain gauge 5 to perform measurement is avoided.

The inner side of the cross beam 1 is also provided with a connecting channel which is communicated with the strain chamber 4, as shown in fig. 3 and 5, the strain gauge 5 is connected with a lead, the lead is pulled out through the connecting channel, the side edge of the cross beam 1 is provided with a connecting part 8, the connecting part 8 is of a cylindrical interface structure, the connecting part 8 is communicated with the communicating channel 7, the lead is connected with corresponding circuit equipment after passing through the connecting channel, the connecting part 8 is connected with a measuring circuit in the circuit equipment, the lead is connected with the measuring circuit in the circuit equipment through the connecting part 8, and the lead transmits the resistance change of the strain gauge 5 to the measuring circuit, and the measuring circuit reads an electric signal.

The bottom of the beam 1 is also provided with a fixing part 9, the fixing part 9 and the beam 1 are integrally formed, the fixing part 9 is of a plate-shaped structure, the fixing part 9 is provided with a connecting hole 10, the connecting hole 10 can be connected with corresponding equipment by matching with bolts, the fixing effect is achieved, the bottom of the fixing part 9 is provided with a connecting groove 11, and the connecting groove 11 can be used for being clamped with the corresponding equipment, so that the fixing part 9 can better achieve the fixing effect.

In this embodiment be equipped with shaft hole 3 in the centre of crossbeam 1, the inside cylindrical work piece that can place in shaft hole 3, the inside back in shaft hole 3 is put into to the work piece, and crossbeam 1 produces elastic deformation for strain gauge 5 also produces the deformation, produces the signal of telecommunication after the deformation, accomplishes the measurement to the work piece, and this scheme can be convenient for carry out the centre gripping to cylindrical work piece, can measure cylindrical work piece fast. Meanwhile, the sealing piece 6 is arranged on the strain chamber 4, the strain gauge 5 can be protected, the lead of the strain gauge 5 is led out outwards through the communication channel 7, and the structure can enable the elastomer to be applied to severe environments and prolong the service life correspondingly.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A load cell elastomer characterized by: including crossbeam (1), the bottom of crossbeam (1) is equipped with space portion (2), be equipped with shaft hole (3) in the centre of crossbeam (1) arch upwards and the part of arch, be located both sides of crossbeam (1) on crossbeam (1) and be equipped with strain chamber (4), it has foil gage (5) to bond in strain chamber (4), the central axis of strain chamber (4) is parallel with the central axis of shaft hole (3), the in-connection of strain chamber (4) has sealing member (6), communication channel (7) have been seted up to the inboard of crossbeam (1), communication channel (7) are linked together with strain chamber (4).

2. The load cell elastomer of claim 1, wherein: the side of crossbeam (1) is equipped with connecting portion (8), connecting portion (8) are linked together with intercommunication passageway (7), the central axis of intercommunication passageway (7) sets up with the central axis of meeting an emergency cavity (4) perpendicularly.

3. The load cell elastomer of claim 2, wherein: the bottom of the cross beam (1) is connected with a fixing part (9), and a connecting hole (10) is formed in the fixing part (9).

4. A load cell elastomer according to claim 3, characterized in that: the sealing piece (6) is a silica gel piece.

5. The load cell elastomer of claim 4 wherein: the bottom of the fixing part (9) is provided with a connecting groove (11).