CN214952709U - Sensor for high-precision electro-hydraulic servo universal testing machine - Google Patents
Sensor for high-precision electro-hydraulic servo universal testing machine Download PDFInfo
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- CN214952709U CN214952709U CN202120678567.XU CN202120678567U CN214952709U CN 214952709 U CN214952709 U CN 214952709U CN 202120678567 U CN202120678567 U CN 202120678567U CN 214952709 U CN214952709 U CN 214952709U
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- cross beam
- sensor
- terminal surface
- spliced pole
- servo universal
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Abstract
The utility model relates to a sensor for servo universal tester of high accuracy electricity liquid, including the spliced pole, the upper end circumference of spliced pole is extended and is formed the connection pad, and the lower extreme is equipped with cross beam, terminal surface integrated into one piece under the central part of cross beam and the spliced pole leaves the space under the roof beam portion of cross beam and the spliced pole between the terminal surface, be equipped with the go-between with cross beam roof beam end integrated into one piece in the periphery of cross beam, the lower terminal surface protrusion of go-between in the lower terminal surface of cross beam, all be equipped with the foil gage on four roof beam portion lateral walls of cross beam, the bolt hole has all been seted up in the circumference of go-between and connection pad, and the advantage lies in: the cross beam structure is used as the mounting part of the strain gauge of the sensor, so that the deformation consistency under the tension and compression stress is realized, and the consistency of the tension and compression sensitivity of the sensor is ensured.
Description
Technical Field
The utility model relates to a universal tester makes the field, especially relates to a sensor that is used for servo universal tester of high accuracy electricity liquid.
Background
When the universal machine is used for testing the tensile and compressive stress of a test piece, the tensile and compressive stress is mainly detected through the sensor, so that the accuracy of the sensor determines the quality of a test result. The existing universal tester sensor mainly adopts a columnar sensor, but the sensor has the following defects: when the pull-press test is carried out, the pull-press deformation of the columnar sensor has difference, so that the pull-press sensitivity of the sensor is inconsistent, and meanwhile, when the stress position of the columnar sensor is changed, the generated electric signal difference is overlarge, so that the improvement of the detection precision of a universal machine is not facilitated.
Based on this, the present disclosure is thus directed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sensor for servo universal tester of high accuracy electricity liquid to reduce the detection error.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
the utility model provides a sensor for servo universal tester of high accuracy electricity liquid, includes the spliced pole, and the upper end circumference of spliced pole extends and forms the connection pad, and the lower extreme is equipped with the cross beam, terminal surface integrated into one piece under the central part of cross beam and the spliced pole leaves the space under the roof beam portion of cross beam and the spliced pole between the terminal surface, be equipped with the go-between with cross beam roof beam end integrated into one piece in the periphery of cross beam, the lower terminal surface protrusion in the lower terminal surface of cross beam of go-between, all be equipped with the foil gage on four roof beam portion lateral walls of cross beam, the bolt hole has all been seted up in the circumference of go-between and connection pad.
Furthermore, a threading channel is formed inside the connecting column.
Furthermore, the outer diameters of the connecting ring and the connecting disc are the same, and the bolt holes in the connecting ring and the bolt holes in the connecting disc are arranged oppositely.
Furthermore, the connecting column, the connecting disc, the cross beam and the connecting ring are all made of alloy steel.
The utility model has the advantages that: the cross beam structure is used as the mounting part of the strain gauge of the sensor, so that the consistency of deformation under tension and compression stress is realized, and the consistency of the tension and compression sensitivity of the sensor is ensured; meanwhile, through experimental tests, when the stress position changes, the difference of the electric signals generated by the cross beam type sensor is far smaller than that of the electric signals generated by the columnar sensor, and the sensor is guaranteed to have better lateral resistance.
Drawings
Fig. 1 is a schematic three-dimensional structure in an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic top view of FIG. 1;
FIG. 4 is a schematic front view of FIG. 1;
FIG. 5 is a schematic diagram of the position of the sensor in the universal machine in the embodiment;
description of the reference symbols
The structure comprises a connecting column 1, a connecting disc 2, a cross beam 3, a gap 4 between the beam part of the cross beam and the lower end face of the connecting column, a part 5 of the lower end face of the connecting ring protruding out of the lower end face of the cross beam, a connecting ring 6 and a strain gauge mounting position 7.
Detailed Description
The present invention will be described in further detail with reference to examples.
As shown in fig. 1 to 4, this embodiment provides a sensor for servo universal tester of high accuracy electricity liquid, including spliced pole 1, the upper end circumference of spliced pole 1 extends and forms connection pad 2, and the lower extreme is equipped with cross 3, the central part of cross 3 and the terminal surface integrated into one piece under the spliced pole 1 leave the space between the roof beam portion of cross 3 and the terminal surface under the spliced pole 1, be equipped with on the periphery of cross 3 with cross 3 roof beam end integrated into one piece's go-between 6, the lower terminal surface protrusion in cross 3 of go-between 6's lower terminal surface, all be equipped with the foil gage on four roof beam portion lateral walls of cross 3, the bolt hole has all been seted up on the week of go-between 6 and connection pad 2. Meanwhile, in order to facilitate threading, a threading channel (not shown in the figure) is arranged inside the connecting column 1, and the data lines on the strain gauges can be connected through the threading channel.
As shown in FIG. 5, the sensor is applied to a universal machine, and needs to be matched with the installation position of an original cylindrical sensor, so that the outer diameters of the connecting ring 6 and the connecting disc 2 need to be set to be the same, the outer diameters of the connecting ring 6 and the connecting disc 2 are the same as the outer diameter of the original cylindrical sensor, the bolt hole in the connecting ring 6 and the bolt hole in the connecting disc 2 are oppositely arranged, and the bolt hole position corresponds to the bolt hole position of the original cylindrical sensor, so that the reconstruction cost can be reduced. During installation, the connecting disc 2 is fixed with an upper cross beam of the universal machine, and the connecting ring 6 is fixed with an upper clamp seat of the universal machine. In order to prevent the sensor from being damaged by the pulling and pressing force generated in the test of a universal machine, the connecting column 1, the connecting disc 2, the cross beam 3 and the connecting ring 6 of the sensor are all made of alloy steel, and the sensor has strong pulling and pressing resistance.
The use principle of the sensor is as follows: when pressure test is carried out, the lower clamp of the universal machine ascends to extrude a test piece, the pressure is transmitted to the sensor through the upper clamp seat, the lower end surface of the connecting ring 6 protrudes out of the lower end surface of the cross beam 3, so that the pressure acts on the connecting ring 6, the connecting ring 6 is pressed to drive the beam part of the cross beam 3 to deform upwards (the space between the beam part of the cross beam 3 and the lower end surface of the connecting column 1 meets the space for the upward deformation of the beam part), and the strain gauge can measure and calculate the compressive stress; similarly, when the tensile test is performed, the connecting ring 6 is pulled, so that the beam part deforms downwards to measure the tensile stress. Because the connecting ring 6 is adopted to pull and press the cross beam 3, the pulling and pressing deformation is only the difference in direction for the cross beam 3, thereby ensuring the consistency of the sensitivity of the pulling and pressing forces of the sensor.
The above-mentioned embodiments are merely illustrative of the inventive concept and are not intended to limit the scope of the invention, which is defined by the claims and the insubstantial modifications of the inventive concept can be made without departing from the scope of the invention.
Claims (4)
1. The utility model provides a sensor for servo universal tester of high accuracy electricity liquid which characterized in that: including the spliced pole, the upper end circumference of spliced pole extends and forms the connection pad, and the lower extreme is equipped with the cross beam, terminal surface integrated into one piece under the central part of cross beam and the spliced pole leaves the space between the terminal surface under the roof beam portion of cross beam and the spliced pole, be equipped with the go-between with cross beam end integrated into one piece in the periphery of cross beam, the lower terminal surface protrusion in the lower terminal surface of cross beam of go-between, all be equipped with the foil gage on four roof beam portion lateral walls of cross beam, the bolt hole has all been seted up in the circumference of go-between and connection pad.
2. The sensor for the high-precision electro-hydraulic servo universal tester as claimed in claim 1, wherein: the inside of the connecting column is provided with a threading channel.
3. The sensor for the high-precision electro-hydraulic servo universal tester as claimed in claim 1, wherein: the outer diameters of the connecting ring and the connecting disc are the same, and the bolt holes in the connecting ring and the bolt holes in the connecting disc are arranged oppositely.
4. The sensor for the high-precision electro-hydraulic servo universal tester as claimed in claim 1, wherein: the connecting column, the connecting disc, the cross beam and the connecting ring are all made of alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120678567.XU CN214952709U (en) | 2021-04-02 | 2021-04-02 | Sensor for high-precision electro-hydraulic servo universal testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120678567.XU CN214952709U (en) | 2021-04-02 | 2021-04-02 | Sensor for high-precision electro-hydraulic servo universal testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214952709U true CN214952709U (en) | 2021-11-30 |
Family
ID=79046156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120678567.XU Active CN214952709U (en) | 2021-04-02 | 2021-04-02 | Sensor for high-precision electro-hydraulic servo universal testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214952709U (en) |
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2021
- 2021-04-02 CN CN202120678567.XU patent/CN214952709U/en active Active
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