CN201340293Y

CN201340293Y - Column type weighing sensor

Info

Publication number: CN201340293Y
Application number: CNU2009200502055U
Authority: CN
Inventors: 伍德常
Original assignee: Dongguan South China Sea Electronic Co ltd
Current assignee: Dongguan South China Sea Electronic Co ltd
Priority date: 2009-01-15
Filing date: 2009-01-15
Publication date: 2009-11-04
Anticipated expiration: 2019-01-15

Abstract

The utility model provides a column type weighing sensor, includes the shell, installs the column type elastomer on the base, and convex briquetting is installed on the elastomer top, and the briquetting upper end is equipped with the arcwall face that is concave to, has put the steel ball that plays the biography power effect on the arcwall face. The elastic bodies are three or two rectangular column elastic bodies, the elastic bodies are uniformly distributed or symmetrically arranged on the base, the surface of each elastic body is provided with a strain gauge, and each strain gauge forms a Wheatstone bridge; the elastic body is screwed with the pressing block through threads, a pressure head with bearing capacity is further mounted at the upper end of the steel ball mounted on the pressing block, and the contact surface of the pressure head and the steel ball is an arc surface which is concave upwards. The utility model has high measurement precision, automatic centering and resetting through the steel ball, strong load resistance and stable performance; and the volume is smaller, and the manufacturing cost is low.

Description

A kind of pillar LOAD CELLS

Technical field

The utility model relates to a kind of LOAD CELLS, relates in particular to a kind of pillar LOAD CELLS.

Background technology

At present, a large amount of bridge type magnetic sensors that adopt Japanese's design eighties in last century in the automobile weighing apparatus, such sensor construction complexity, stability and manufacturability are poor, the cost height causes the general volume of existing bridge-type LOAD CELLS bigger thus, and it is big that the assembling complexity causes precision to be disperseed.

The utility model content

The technical problems to be solved in the utility model provides a kind of measuring accuracy height, good stability, cheap pillar LOAD CELLS.

In order to address the above problem, the utility model by the following technical solutions:

A kind of pillar LOAD CELLS, comprise shell, be installed on the column type elastomer on the base, the elastic body top is equipped with the convex briquetting, the briquetting upper end is provided with to recessed arcwall face, put the steel ball that has been placed with the power transmission effect on the arcwall face, described column type elastomer is three rectangle column type elastomers, and elastic body evenly distributes or symmetry is installed on the base, each surface of elastomer all is equipped with strainometer, and strainometer is formed Wheatstone bridge.Described elastic body can also be column type elastic body or polygon column type elastomer.Certainly, in order further to simplify structure, save cost, column type elastomer also can be two.

Further, the described steel ball that is loaded on the briquetting also can be equipped with the pressure head of bearing capacity, and pressure head contacts end face and offers and be the arcwall face to fovea superior with steel ball, guaranteed automatically reseting of steel ball.The mode that compresses with screw thread or cross bar between described briquetting and the elastic body is connected.

Described briquetting is with the rubber sleeve that seals, and the bottom of rubber sleeve is overlapped then shell simultaneously, and the rubber sleeve surface also is equiped with spring sealed hoop.Adopt the sealing of O RunddichtringO between perhaps described briquetting and shell and the base.

The utility model stable performance, the alignment reset capability is strong automatically, the measuring accuracy height, error is little.Easy to process, owing to only adopt three or two column type elastomers, volume is less, and is easy for installation, saved cost.

Description of drawings

Accompanying drawing 1 is the utility model fragmentary top TV structure synoptic diagram;

Accompanying drawing 2 is the utility model embodiment one cross-sectional view;

Accompanying drawing 3 is the utility model embodiment two structural representations.

Embodiment

For the ease of those skilled in the art's understanding, the utility model is further described below in conjunction with specific embodiment and accompanying drawing:

Shown in accompanying

drawing

1,2, the utility model discloses a kind of measuring accuracy height, stable performance, cheap pillar LOAD CELLS.

Embodiment one: a kind of pillar LOAD CELLS, comprise shell 1, be installed on the column type elastomer 3 on the base 2, convex briquetting 4 is installed on the elastic body top, briquetting 4 upper ends are provided with to recessed arcwall face, put the steel ball 5 that has been placed with the power transmission effect on the arcwall face, described column type elastomer 3 is three rectangle column type elastomers 3, elastic body 3 evenly distributes or symmetry is installed on the base 2, each elastic body 3 surface all is equipped with strainometer, strainometer is formed Wheatstone bridge, and elastic body 3 can also be column type elastic body or cartridge type elastic body or polygon column type elastomer.Certainly, in order further to simplify structure, save cost, column type elastomer also can be made as two.Mode with screw thread between elastic body 3 and the briquetting 4 spins, and the mode that can also cross bar compresses connects, and certainly, is not to be defined in this two kinds of connected modes.Be loaded on steel ball 5 upper ends on the briquetting 4 pressure head 6 of bearing capacity also is installed, the contact jaw of pressure head 6 and steel ball 5 is made as the arcwall face to fovea superior, has guaranteed automatically reseting of steel ball.Be with the rubber sleeve 7 that seals on the briquetting 4, the bottom of rubber sleeve 7 is overlapped then shell 1 simultaneously, also is provided with spring sealed hoop 8, good sealing effect at rubber sleeve 7 outside surfaces.

Embodiment two: as shown in Figure 3, the structure of present embodiment and embodiment one is basic identical, and difference is the hermetically-sealed construction between briquetting 4 and shell 1 and the base 2, adopts 9 sealings of O RunddichtringO in the present embodiment between briquetting 4 and shell 1 and the base 2.

During work, after pressure head was stressed, pressure head acted on the briquetting through steel ball, power is delivered on the briquetting by steel ball, the suffered power of briquetting is delivered to elastic body again, and the elastic body pressurized produces deformation, is under pressure at vertical direction, compression deformation, and laterally owing to be subjected to compression swelling, be equivalent to laterally be subjected to pulling force, the variation of the Wheatstone bridge induction force of forming by strainometer, produce compressive strain and stretching strain, convert the variation of power to electric signal and outwards transmit.

The foregoing description is the preferable implementation of the utility model, and in addition, the utility model can also have other implementations, and any conspicuous replacement is all within protection domain of the present utility model under the prerequisite that does not break away from the present utility model design.

Claims

1. pillar LOAD CELLS, comprise shell (1), be installed on the column type elastomer (3) on the base (2), the elastic body top is equipped with convex briquetting (4), the briquetting upper end is provided with to recessed arcwall face, put on the arcwall face and be placed with the steel ball (5) that automatically resets with the power transmission effect, it is characterized in that: described column type elastomer is three or two rectangle column type elastomers, elastic body evenly distributes or symmetry is installed on the base, each surface of elastomer all is equipped with strainometer, and each strainometer is formed Wheatstone bridge.

2. pillar LOAD CELLS according to claim 1 is characterized in that: compress mode with screw thread or cross bar between described elastic body and the briquetting and be connected.

3. pillar LOAD CELLS according to claim 2 is characterized in that: be loaded on the pressure head (6) that bearing capacity also is installed on the steel ball on the briquetting, pressure head and steel ball contact jaw offer the arcwall face to fovea superior.

4. pillar LOAD CELLS according to claim 3 is characterized in that: described elastic body can also be column type elastic body or polygon column type elastomer.

5. according to each described pillar LOAD CELLS in the claim 1～4, it is characterized in that: be with the rubber sleeve (7) that seals on the described briquetting, the bottom of rubber sleeve is overlapped then shell simultaneously, and the rubber sleeve outside surface also is provided with spring sealed hoop (8).

6. according to each described pillar LOAD CELLS of claim 1～4, it is characterized in that: adopt O RunddichtringO (9) sealing between described briquetting and shell, the base.