Strain gauge with high applicability

Abstract

The utility model belongs to the technical field of sensors, and particularly relates to a strain gauge with strong applicability, which comprises a strain gauge main body and a connecting seat, the connecting seat is used for fixing the strain gauge main body on a structure to be measured, and the connecting seat comprises a first seat body, a second seat body and a locking piece, the first seat body comprises a mounting base and a first arc-shaped plate which are fixedly connected, the second seat body comprises a mounting base and a second arc-shaped plate which are fixedly connected, the first arc-shaped plate is matched with the second arc-shaped plate, and the first seat body is fixedly connected with the second seat body under the action of the locking piece. The strain gauge is provided with the connecting seat, the connecting seat comprises the first seat body and the second seat body, and the first seat body and the second seat body can form a specific angle through the cooperation of the first arc-shaped plate and the second arc-shaped plate and are fixedly connected, so that the strain gauge main body can be conveniently installed on the arc-shaped curved surface.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, and particularly relates to a strain gauge with strong applicability. Background Art

[0002] A strain gauge is a precision measuring instrument designed to monitor minute changes in the shape or dimensions of an object. It converts these minute changes into quantifiable electrical signals, enabling the precise measurement of the strain state of the object. In the engineering field, strain gauges are widely used to monitor the safety and integrity of corresponding structures, especially in structural health monitoring and geotechnical engineering, where their application is particularly important. There are various types of strain gauges, and common types include resistance strain gauges and vibrating wire strain gauges. The resistance strain gauge measures by detecting the characteristic that the resistance of the material changes with strain, while the vibrating wire strain gauge senses strain by monitoring the change in the vibration frequency of its vibrating wire. Among them, the vibrating wire strain gauge can be further divided into a surface strain gauge and an embedded strain gauge. The vibrating wire surface strain gauge is mainly used to monitor the surface strain of steel structures or concrete structures (such as pipelines, steel bridges, concrete bridges, pile foundations, etc.). However, for the existing vibrating wire surface strain gauges in the prior art, they are usually fixed on steel plates or concrete structures by welding or bolt installation. It is relatively convenient to install on flat steel plates or concrete, but it is inconvenient to install on non-planar structures such as curved steel plates or arched concrete. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the deficiencies of the prior art and provide a strain gauge with strong applicability, which can be conveniently installed and used on flat or arc surfaces.

[0004] The technical solution of the utility model is: a strain gauge with strong applicability, including a strain gauge main body and a connecting seat. The connecting seat is used to fix the strain gauge main body on the structure to be measured. The connecting seat includes a first seat body, a second seat body, and a locking member. The first seat body includes a fixedly connected mounting base and a first arc plate. The second seat body includes a fixedly connected mounting base and a second arc plate. The first arc plate and the second arc plate cooperate with each other, and the first seat body and the second seat body are fixedly connected under the action of the locking member.

[0005] Further, the mounting base is integrally formed with the first arc plate or the second arc plate.

[0006] Further, a kidney-shaped notch is provided on the first arc plate, and a screw hole is provided on the second arc plate, and the position of the screw hole corresponds to that of the kidney-shaped notch up and down. Preferably, there are multiple kidney-shaped notches and screw holes, and they correspond to each other one by one.

[0007] Furthermore, the locking member is a screw or a bolt, which passes through the waist-shaped notch and cooperates with the screw hole. When the locking member is tightened, the first arc plate and the second arc plate are tightly fixed together and cannot move relative to each other.

[0008] Furthermore, the first arc plate and the second arc plate are provided with mutually matching toothed structures on the opposite sides thereof, and the toothed structures can cooperate with the locking member to tightly connect the two arc plates without relative movement.

[0009] Furthermore, the first curved plate and the second curved plate are similar in shape, and both are arc-shaped. The radii of the two curved plates can be set according to actual needs.

[0010] Furthermore, there are two connecting sockets, which are respectively arranged at two ends of the strain gauge body.

[0011] Furthermore, a mounting hole is provided on the mounting base of the first seat body, and the mounting hole facilitates the first seat body to be connected to the structure to be measured by bolts.

[0012] Furthermore, a connecting piece is provided on the mounting base of the second seat body, and the connecting piece is used to be directly connected to the strain gauge body.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the strain gauge in the utility model is provided with a connecting seat, which is arranged at both ends of the strain gauge body. The connecting seat is a split type, including a first seat body and a second seat body. Through the cooperation of the first arc plate and the second arc plate, the first seat body and the second seat body can form a specific angle and be fixedly connected, so that the strain gauge body can be conveniently installed on the arc surface, and the cooperation method of the first arc plate and the second arc plate is very convenient to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the connecting seat in Embodiment 1 of the present utility model;

[0015] Figure 2 This is an exploded schematic diagram of the connecting seat in Embodiment 1 of the present utility model;

[0016] Figure 3 It is a schematic diagram of the assembly of the strain gauge body and the connecting seat of Example 1 of the utility model;

[0017] Figure 4 is a schematic diagram of the strain gauge of Example 1 of the utility model in actual application;

[0018] In the figure: 1-mounting base, 2-first arc plate, 21-waist-shaped notch, 3-second arc plate, 31-screw hole, 4-locking piece, 5-mounting hole, 6-connecting piece, 7-strain gauge body. DETAILED DESCRIPTION

[0019] The following will further elaborate on the present utility model in conjunction with specific embodiments. The methods or functional components not specifically described in the embodiments are all prior arts. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs.

[0020] Embodiment 1

[0021] As shown in Figures 1-4 the figure, this embodiment is a strain gauge with strong applicability, including a strain gauge main body 7 and a connecting seat. The connecting seat is used to fix the strain gauge main body 7 on the structure to be measured. The connecting seat includes a first seat body, a second seat body, and a locking member 4. The first seat body includes a fixedly connected mounting base 1 and a first arc-shaped plate 2. The second seat body includes a fixedly connected mounting base 1 and a second arc-shaped plate 3. The first arc-shaped plate 2 and the second arc-shaped plate 3 cooperate with each other, and under the action of the locking member 4, the first seat body and the second seat body are fixedly connected.

[0022] In this embodiment, the mounting base 1 and the first arc-shaped plate 2 or the second arc-shaped plate 3 are integrally formed. A kidney-shaped notch 21 is provided on the first arc-shaped plate 2, and a screw hole 31 is provided on the second arc-shaped plate 3, and the position of the screw hole 31 corresponds to that of the kidney-shaped notch 21 up and down.

[0023] In this embodiment, the locking member 4 is a screw or a bolt. The locking member 4 passes through the kidney-shaped notch 21 and cooperates with the screw hole 31. After the locking member 4 is tightened, the first arc-shaped plate 2 and the second arc-shaped plate 3 are tightly fixed together and cannot move relative to each other. Tooth-like structures that match each other are provided on the opposite side surfaces of the first arc-shaped plate 2 and the second arc-shaped plate 3. Under the action of the locking member 4, the two arc-shaped plates can be tightly connected through the tooth-like structures and do not move relative to each other.

[0024] In this embodiment, the shapes of the first arc-shaped plate 2 and the second arc-shaped plate 3 are similar, and both are arc-shaped. There are two connecting seats, which are respectively arranged at both ends of the strain gauge main body 7. A mounting hole 5 is provided on the mounting base 1 of the first seat body, and the mounting hole 5 facilitates the connection of the first seat body and the structure to be measured through a bolt. A connecting member 6 is provided on the mounting base 1 of the second seat body, and the connecting member 6 can be directly connected to the strain gauge main body 7 through a screw.

[0025] When the strain gauge in this embodiment is in use, the first seat body can be first fixed to the inner curved surface of the structure to be measured (such as an arched steel plate or an arc-shaped concrete structure), and then through the cooperation of the first arc-shaped plate 2 and the second arc-shaped plate 3, the overall connecting seat forms an appropriate angle, so as to conveniently install the strain gauge main body 7 on the structure to be measured.

[0026] The above are only some embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have combinations and variations of the foregoing various technical features. Without departing from the spirit and scope of the present utility model, improvements, variations, equivalent substitutions of the present utility model, or the use of the structure or method of the present utility model in other fields to achieve the same effect all fall within the protection scope of the present utility model.

Claims

1. A strain gauge with strong applicability, characterized in that: It includes a strain gauge body and a connecting seat. The connecting seat is used to fix the strain gauge body on the structure to be measured. The connecting seat includes a first seat body, a second seat body and a locking member. The first seat body includes a mounting base and a first arc-shaped plate fixedly connected. The second seat body includes a mounting base and a second arc-shaped plate fixedly connected. The first arc-shaped plate and the second arc-shaped plate cooperate with each other, and the first seat body and the second seat body are fixedly connected under the action of the locking member.

2. The strain gauge according to claim 1, wherein: The mounting base is integrally formed with the first arc-shaped plate or the second arc-shaped plate.

3. The strain gauge according to claim 1, wherein: A kidney-shaped notch is provided on the first arc-shaped plate, and a screw hole is provided on the second arc-shaped plate, and the position of the screw hole corresponds to that of the kidney-shaped notch up and down.

4. The strain gauge according to claim 3, wherein: There are multiple kidney-shaped notches and screw holes, and they correspond to each other one by one.

5. The strain gauge according to claim 3, wherein: The locking member is a screw or a bolt. The locking member passes through the kidney-shaped notch and cooperates with the screw hole. After the locking member is tightened, the first arc-shaped plate and the second arc-shaped plate are tightly fixed together and cannot move relatively.

6. The strain gauge according to claim 1, wherein: Tooth-like structures that match each other are provided on the opposite side surfaces of the first arc-shaped plate and the second arc-shaped plate.

7. The strain gauge according to claim 1, characterized in that: The first arc-shaped plate and the second arc-shaped plate are similar in shape and are both arc-shaped.

8. The strain gauge according to claim 1, characterized in that: There are two connecting seats, which are respectively arranged at both ends of the strain gauge body.

9. The strain gauge according to claim 1, characterized in that: Mounting holes are provided on the mounting base of the first seat body, and the mounting holes facilitate the connection of the first seat body and the structure to be measured through bolts.

10. The strain gauge according to claim 1, characterized in that: A connecting member is provided on the mounting base of the second seat body, and the connecting member is used to be directly connected with the strain gauge body.

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