CN209745222U

CN209745222U - Resistance strain type micro-strain sensor

Info

Publication number: CN209745222U
Application number: CN201920706281.0U
Authority: CN
Inventors: 汪星星; 王建国
Original assignee: Shenzhen Force Sensor Technology Co Ltd
Current assignee: Shenzhen Force Sensor Technology Co Ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2019-12-06
Anticipated expiration: 2029-05-16

Abstract

The utility model provides a resistance strain type micro strain sensor, include: the pressure-bearing device comprises a body, wherein the upper end of the body protrudes to form a fixed pressure surface, a through mounting hole is formed in the fixed pressure surface, two sides of the body, which are positioned on the fixed pressure surface, are respectively provided with a strain beam, two parallel side surfaces of the strain beams, which are perpendicular to the fixed pressure surface, are respectively provided with a recessed part, and the bottom surfaces of the recessed parts are respectively provided with strain gauges. Since the technical scheme is used, the utility model discloses small, simple to operate, and as long as just can the problem of solution with a mounting hole, do not have the influence completely to the security of equipment.

Description

Resistance strain type micro-strain sensor

Technical Field

The utility model relates to a sensor technical field, in particular to resistance strain type micro strain transducer.

Background

For some cantilever type press mounting machines, punching machines and other equipment, due to the particularity of the equipment and the high dynamic response of force values, for ordinary strain type force sensors, the measurement of force values and the monitoring and control are very difficult, firstly, no mounting position exists, and in addition, the sensors are easy to damage due to large impact force.

SUMMERY OF THE UTILITY MODEL

The utility model provides a resistance strain type micro strain sensor installs on the part of equipment load through a screw, through the small deformation that response part received to calculate the value of the actual pressure down indirectly, with the solution above-mentioned technical problem.

In order to solve the above problem, as an aspect of the present invention, there is provided a resistance strain type micro strain sensor, including: the pressure-bearing device comprises a body, wherein the upper end of the body protrudes to form a fixed pressure surface, a through mounting hole is formed in the fixed pressure surface, two sides of the body, which are positioned on the fixed pressure surface, are respectively provided with a strain beam, two parallel side surfaces of the strain beams, which are perpendicular to the fixed pressure surface, are respectively provided with a recessed part, and the bottom surfaces of the recessed parts are respectively provided with strain gauges.

Preferably, a first wire passing hole is formed in the beam body between the two concave parts of the strain beam.

Preferably, a second wire passing hole is formed in the circumferential side wall of the strain beam and communicated with one of the concave portions.

preferably, the mounting hole is a threaded hole.

Since the technical scheme is used, the utility model discloses small, simple to operate, and as long as just can the problem of solution with a mounting hole, do not have the influence completely to the security of equipment.

Drawings

fig. 1 schematically shows a first perspective view of the present invention;

fig. 2 schematically shows a front view of the invention;

FIG. 3 schematically illustrates a cross-sectional view F-F of FIG. 2;

Fig. 4 schematically shows a second perspective view of the present invention;

FIG. 5 schematically illustrates a front view of a strain gage;

FIG. 6 schematically shows a schematic view of a cantilever punch press;

Fig. 7 schematically shows a view of an application scenario of the present invention in a cantilever type punch press;

fig. 8 schematically shows a diagram of the impact of the application of the invention in a frame press or punch.

reference numbers in the figures: 1. a body; 2. fixing the pressure surface; 3. mounting holes; 4. a strain beam; 5. a recessed portion; 6. a strain gauge; 7. a first wire passing hole; 8. a second wire passing hole; 9. a resistive strain type micro strain sensor; 10. a punch holder; 11. a punch; 12. a workpiece; 13. a base; 14. an upper cover; 15. a pillar; 16. a base.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

The utility model discloses an aspect provides a resistance strain type microstrain sensor, especially a miniature resistance strain type microstrain sensor, mainly is applied to small-size cantilever type press, stamping machinery and large-scale mechanical cantilever type structure's equipment, through installation resistance strain type microstrain sensor, the small deformation of response equipment load part calculates the great power value of pushing down indirectly.

The resistive strain type micro strain sensor includes: the pressure-measuring device comprises a body 1, wherein a fixed pressure surface 2 is formed at the upper end of the body 1 in a protruding mode, a through mounting hole 3 is formed in the fixed pressure surface 2, two strain beams 4 are respectively formed on two sides, located on the fixed pressure surface 2, of the body 1, recessed portions 5 are formed in two parallel side faces, perpendicular to the fixed pressure surface 2, of each strain beam 4, and strain gauges 6 are arranged on the bottom faces of the recessed portions 5.

the two strain beams 4 are symmetrically arranged about the mounting hole 3, and a shear type or parallel beam structure can be adopted. The mounting holes 3 are used for fixing the present invention to a corresponding position, for example, a cantilever type press or a frame type press or a corresponding position of a press. The bottom surfaces of the four concave parts 5 are all provided with strain gauges 6, deformation is generated through stress deformation of the strain beams, resistance change of the strain gauges is influenced, and electric signals which are in equal proportion to deformation or force values are output through a Wheatstone bridge formed by the strain gauges.

Since the technical scheme is used, the utility model discloses small, simple to operate (installation area is only 0.04M2), and as long as just can solve the problem with the mounting hole of M6, do not have the influence to the security of equipment completely.

Preferably, a first wire passing hole 7 is formed in the beam body between the two concave parts 5 of the strain beam 4. The first wire through hole 7 is used to facilitate the bridge connection.

Preferably, a second wire through hole 8 is formed in a circumferential side wall of the strain beam 4, and the second wire through hole 8 is communicated with one of the concave portions 5. The second wire through hole 8 is used for facilitating wire through of the outgoing wire. Preferably, the mounting hole 3 is a threaded hole.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A resistive strain micro-strain sensor, comprising: the pressure-bearing device comprises a body (1), wherein the upper end of the body (1) protrudes to form a fixed pressure surface (2), a through mounting hole (3) is formed in the fixed pressure surface (2), two sides, located on the fixed pressure surface (2), of the body (1) respectively form a strain beam (4), two parallel side surfaces, perpendicular to the fixed pressure surface (2), of each strain beam (4) are respectively provided with a recessed portion (5), and the bottom surface of each recessed portion (5) is provided with a strain gauge (6).

2. The resistive strain micro strain sensor according to claim 1, wherein a first wire through hole (7) is formed on the beam body between the two recesses (5) of the strain beam (4).

3. The resistive strain micro strain sensor according to claim 2, wherein a second wire through hole (8) is formed in a circumferential side wall of the strain beam (4), and the second wire through hole (8) is communicated with one of the recesses (5).

4. The resistive strain micro strain sensor according to claim 2, wherein the mounting holes (3) are threaded holes.