Vibrating wire strain gauge auxiliary installation device

Abstract

The utility model discloses an auxiliary mounting device for a vibrating wire strain gauge, which belongs to the technical field of sensor mounting and comprises a support body, a measuring module, an adjusting module and a positioning module, and the measuring module, the adjusting module and the positioning module are mounted on the support body. The measuring module is used for monitoring the tension degree of the vibrating wire strain gauge, and the positioning module is used for limiting the support body on an object to be measured. According to the utility model, the measuring module, the adjusting module and the positioning module are installed on the support main body, after the support main body is limited on an object to be measured, the adjusting module is used for adjusting the tension degree of the vibrating wire strain gauge, and the measuring module is used for monitoring the tension degree of the vibrating wire strain gauge. Therefore, the tension degree of the vibrating wire type strain gauge can be conveniently adjusted to a required state, the vibrating wire type strain gauge is finally fixed and prevented from shifting, and convenient and rapid installation is realized on the basis of ensuring the installation precision.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor installation, in particular to an auxiliary installation device for a vibrating-wire strain gauge. Background Art

[0002] The ability to accurately measure the strain of an object is crucial in structural health monitoring, material performance testing, and many engineering applications. As a high-precision, high-stability measurement tool, vibrating-wire strain gauges have become an indispensable key device in these fields through their unique sensing mechanism, which uses the frequency change of steel strings under stress to reflect the strain state of the measured structure. However, despite the many technical advantages of vibrating-wire strain gauges, their installation process faces significant challenges that limit their application efficiency and accuracy.

[0003] At present, the installation of vibrating-wire strain gauges mainly relies on two traditional methods: one is to manually adjust the tension adjustment knob, and use external measuring devices to repeatedly check the tension degree until the preset standard is reached; the other is to use specific tools to adjust the tension, and external measurements are also required to confirm the adjustment results. Both methods have significant disadvantages: first, they are highly dependent on manual operation and the assistance of external measuring equipment, which not only increases the complexity of the installation steps, but also prolongs the installation cycle and reduces work efficiency; second, errors are inevitable in the manual adjustment and verification process, and after the adjusted strain gauge is placed on the surface to be measured, its tension state may change due to various factors, further affecting the installation accuracy and the reliability of the measurement results.

[0004] Therefore, developing a vibrating-wire strain gauge installation method that can simplify the installation process, improve installation accuracy, and have good adaptability and stability has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to provide an auxiliary installation device for a vibrating-wire strain gauge to solve the problems existing in the above-mentioned prior art. A measuring module, an adjusting module and a positioning module are installed on a bracket body. After the bracket body is limited to the object to be measured, the tensioning degree of the vibrating-wire strain gauge is adjusted by the adjusting module, and the tensioning degree of the vibrating-wire strain gauge is monitored by the measuring module, so that the tensioning degree of the vibrating-wire strain gauge can be conveniently adjusted to the required state, and the displacement of the vibrating-wire strain gauge can be avoided when the vibrating-wire strain gauge is finally fixed, so as to achieve convenient and quick installation on the basis of ensuring installation accuracy.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides an auxiliary installation device for a vibrating-wire strain gauge, comprising a bracket body and a measuring module, an adjusting module and a positioning module installed on the bracket body, wherein the adjusting module is used to adjust the tensioning degree of the vibrating-wire strain gauge, the measuring module is used to monitor the tensioning degree of the vibrating-wire strain gauge, and the positioning module is used to limit the bracket body to the object to be measured.

[0008] Preferably, the bracket body includes a first bracket and a second bracket, the adjustment module includes an adjustment structure for adjusting the distance between the first bracket and the second bracket, and a first limiting structure and a second limiting structure respectively installed on the first bracket and the second bracket, the first limiting structure and the second limiting structure are respectively used to limit the first mounting seat and the second mounting seat of the vibrating wire strain gauge.

[0009] Preferably, the first bracket and the second bracket are connected at the ends to form an X-shaped elastic body, and the adjustment structure includes a stud and an adjustment knob connected to the stud, and the adjustment knob is located on one side of the second bracket of the X-shaped elastic body, and the stud is threadedly connected to the second bracket and abuts against the first bracket.

[0010] Preferably, the first limiting structure includes a first paddle and a first pressure block, the first paddle is used to be placed on the inner side of the first mounting seat, and the first pressure block is used to be placed on the top of the first mounting seat; the second limiting structure includes a second paddle and a second pressure block, the second paddle is used to be placed on the inner side of the second mounting seat, and the second pressure block is used to be placed on the top of the second mounting seat.

[0011] Preferably, the measuring module comprises a measuring coil and a signal cable connected to the measuring coil, the measuring coil is mounted on the first bracket, and the measuring coil is located between the first paddle and the second paddle.

[0012] Preferably, the positioning module comprises a first connection structure connected to the first bracket and a second connection structure connected to the second bracket, and the first connection structure and the second connection structure are used to connect the object to be measured.

[0013] Preferably, the first connection structure includes a group of first strong magnetic components, and the second connection structure includes a group of second strong magnetic components.

[0014] Preferably, the first connection structure includes two groups of first strong magnetic components, which are spaced apart in the width direction of the first bracket, and the second connection structure includes two groups of second strong magnetic components, which are spaced apart in the width direction of the second bracket.

[0015] Preferably, the first strong magnetic component includes a first column, a first spring and a first strong magnet, the first column passes through the first bracket, the first spring is sleeved on the side of the first column away from the object to be measured, one end of the first spring abuts the end of the first column, the other end of the first spring abuts the first bracket, and the first strong magnet is connected to the side of the first column close to the object to be measured; the second strong magnetic component includes a second column, a second spring and a second strong magnet, the second column passes through the second bracket, the second spring is sleeved on the side of the second column away from the object to be measured, one end of the second spring abuts the end of the second column, the other end of the second spring abuts the second bracket, and the second strong magnet is connected to the side of the second column close to the object to be measured.

[0016] Preferably, it further comprises a reinforcing plate, wherein the reinforcing plate is connected to one side of the first bracket of the X-shaped elastic body, and the reinforcing plate is provided with a process hole.

[0017] Compared with the prior art, the utility model has achieved the following technical effects:

[0018] The utility model installs a measuring module, an adjusting module and a positioning module on a bracket body. After the bracket body is limited to the object to be measured, the adjusting module can be used to adjust the tensioning degree of the vibrating-wire strain gauge. At the same time, the measuring module is used to monitor the tensioning degree of the vibrating-wire strain gauge. If the result monitored by the measuring module does not meet the tensioning degree requirement, the adjusting module is continued to be used for adjustment until the required tensioning degree is met. The entire adjustment process is convenient and fast, and the tensioning degree of the vibrating-wire strain gauge can be conveniently adjusted to the required state, and the vibrating-wire strain gauge can be prevented from shifting when it is finally fixed. The limiting function of the positioning module is used to limit the position of the vibrating-wire strain gauge to avoid shifting, thereby achieving convenient and fast installation while ensuring installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the installation state of the utility model;

[0021] Figure 2 This is a schematic diagram of the auxiliary installation device of the utility model Figure 1 ;

[0022] Figure 3This is a schematic diagram of the auxiliary installation device of the utility model Figure 2 ;

[0023] Among them, 1. Auxiliary installation device of vibrating wire strain gauge; 2. Pipeline; 3. Vibrating wire reading device;

[0024] 100, bracket body; 101, first pressing block; 102, second pressing block; 103, first paddle; 104, second paddle; 105, second bracket; 106, first bracket;

[0025] 200, adjustment module; 201, stud; 202, positioning bracket; 203, adjustment knob;

[0026] 300, positioning module; 301, first column; 302, first spring; 303, first strong magnet; 304, second column; 305, second spring; 306, second strong magnet;

[0027] 400, vibrating wire strain gauge; 401, first mounting seat; 402, second mounting seat; 403, steel wire protection tube; 404, steel wire;

[0028] 500, measuring module; 501, measuring coil; 502, signal cable. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The purpose of the utility model is to provide an auxiliary installation device for a vibrating-wire strain gauge to solve the problems existing in the prior art. A measuring module, an adjusting module and a positioning module are installed on a bracket body. After the bracket body is limited to the object to be measured, the adjusting module is used to adjust the tensioning degree of the vibrating-wire strain gauge, and the measuring module is used to monitor the tensioning degree of the vibrating-wire strain gauge, so that the tensioning degree of the vibrating-wire strain gauge can be conveniently adjusted to the required state, and the displacement of the vibrating-wire strain gauge can be avoided when the vibrating-wire strain gauge is finally fixed, so as to achieve convenient and quick installation on the basis of ensuring installation accuracy.

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figures 1 to 3As shown, the utility model provides a vibrating-wire strain gauge auxiliary installation device, the vibrating-wire strain gauge auxiliary installation device 1 is used in conjunction with a vibrating-wire reading device 3. After the vibrating-wire strain gauge auxiliary installation device 1 and the vibrating-wire strain gauge 400 are assembled, the two are jointly positioned on the surface of the object to be measured (for example, a pipe 2), and the vibrating-wire reading device 3 is used to read the data measured by the vibrating-wire strain gauge auxiliary installation device 1. Based on this, the vibrating-wire strain gauge auxiliary installation device 1 is used to adjust the installation state of the vibrating-wire strain gauge 400, and finally the vibrating-wire strain gauge 400 is installed on the object to be measured as required.

[0033] Specifically, the auxiliary installation device 1 of the vibrating-wire strain gauge includes a bracket body 100 and a measuring module 500, an adjusting module 200 and a positioning module 300 installed on the bracket body 100, wherein the adjusting module 200 is used to adjust the tension of the vibrating-wire strain gauge 400, and the adjustment method is not specifically limited, and the adjustment method in the prior art can be adopted, for example, the adjusting module 200 is connected to the adjustment structure of the vibrating-wire strain gauge 400 itself, or the tension adjustment is performed after the adjusting module 200 is aligned with the mounting seat of the vibrating-wire strain gauge 400. The measuring module 500 is used to monitor the tension of the vibrating-wire strain gauge 400, and the measuring principle of the measuring module 500 is the same as that of the prior art, that is, the parameters such as the frequency of the vibrating wire are converted into the tension. The positioning module 300 is used to limit the bracket body 100 to the object to be measured. When limiting, a known limiting method can be used. For example, when the object to be measured is a pipe 2, a clamp, bonding, magnetic attraction, etc. can be used. However, it should be noted that no matter which limiting method is adopted, it should not affect the adjustment of the adjustment module 200.

[0034] The utility model installs the measuring module 500, the adjusting module 200 and the positioning module 300 on the bracket body 100. After the bracket body 100 is limited to the object to be measured, the adjusting module 200 can be used to adjust the tensioning degree of the vibrating-wire strain gauge 400. At the same time, the measuring module 500 is used to monitor the tensioning degree of the vibrating-wire strain gauge 400. If the monitoring result of the measuring module 500 does not meet the tensioning degree requirement, the adjusting module 200 is continued to be used for adjustment until the required tensioning degree is met. The whole adjustment process is convenient and fast, and the tensioning degree of the vibrating-wire strain gauge 400 can be conveniently adjusted to the required state, and the displacement of the vibrating-wire strain gauge 400 can be avoided when the vibrating-wire strain gauge 400 is finally fixed. The limiting function of the positioning module 300 is used to limit the position of the vibrating-wire strain gauge 400 to avoid displacement, thereby achieving convenient and fast installation while ensuring installation accuracy.

[0035] The bracket body 100 includes a first bracket 106 and a second bracket 105, and the adjustment module 200 includes an adjustment structure for adjusting the distance between the first bracket 106 and the second bracket 105, and a first limiting structure and a second limiting structure respectively installed on the first bracket 106 and the second bracket 105, and the first limiting structure and the second limiting structure are respectively used to limit the first mounting seat 401 and the second mounting seat 402 of the vibrating wire strain gauge 400. The distance between the first bracket 106 and the second bracket 105 is adjusted by the adjustment structure, so as to adjust the distance between the first limiting structure and the second limiting structure, thereby realizing the position adjustment of the first mounting seat 401 and the second mounting seat 402, and the positions of the first mounting seat 401 and the second mounting seat 402 directly affect the tension degree of the steel string 404 of the vibrating wire strain gauge 400.

[0036] The first bracket 106 and the second bracket 105 can be an integral structure or a split structure. In the case of a split structure, a guide structure needs to be provided to constrain the relative movement of the first bracket 106 and the second bracket 105. In a specific embodiment, the first bracket 106 and the second bracket 105 can be connected at the ends to form a "X"-shaped elastic body, with the first bracket 106 as the main body and the second bracket 105 as the elastic cantilever. The position of the second bracket 105 relative to the first bracket 106 can be changed by adjusting the adjustment structure. The adjustment structure can be in the form of an inserted adjustment gasket (adjusting the distance between the two by plugging into the gap between the adjustment structures), a diamond-shaped telescopic support or a stud 201. In a specific embodiment, the adjustment structure includes a stud 201 and an adjustment knob 203 connected to the stud 201. The adjustment knob 203 is located on one side of the second bracket 105 of the cross-shaped elastic body. The stud 201 is threadedly connected to the second bracket 105 (directly threadedly connected to the second bracket 105 or threadedly connected to the positioning bracket 202 fixed to the second bracket 105) and abuts against the first bracket 106. When the adjustment knob 203 is rotated, the stud 201 can be driven to rotate, thereby making the second bracket 105 prop up or retract relative to the first bracket 106. It should be noted that the connection form of the stud 201 with the first bracket 106 and the second bracket 105 can also be other ways, for example, the stud 201 is rotatably connected to the first bracket 106 and has a limit in the axial direction, and is threadedly connected to the second bracket 105; or the stud 201 is rotatably connected to the second bracket 105 and has a limit in the axial direction, and is threadedly connected to the first bracket 106; or other achievable ways.

[0037] The first limiting structure and the second limiting structure are used to realize the connection of the mounting seat of the vibrating-wire strain gauge 400, which can be realized by means of clamping, bonding, etc. In a specific embodiment, the first limiting structure may include a first paddle 103 and a first pressing block 101. The first paddle 103 may be placed in a C-shape on the inner side of the first mounting seat 401, and the C-shaped opening is buckled on the outer diameter side of the steel string protection tube 403. The first pressing block 101 is attached to the first mounting seat 401 and placed on the top of the first mounting seat 401 to press the first mounting seat 401. The second limiting structure may include a second paddle 104 and a second pressing block 102. The second paddle 104 may be placed in a C-shape on the inner side of the second mounting seat 402, and the C-shaped opening is buckled on the outer diameter side of the steel string protection tube 403. The second pressing block 102 is attached to the second mounting seat 402 and placed on the top of the second mounting seat 402.

[0038] The measuring module 500 may include a measuring coil 501 and a signal cable 502 connected to the measuring coil 501. The measuring coil 501 may be installed on the first bracket 106. The measuring coil 501 is located between the first paddle 103 and the second paddle 104. That is, the measuring coil 501 is facing the steel string 404 and the steel string protection tube 403. The measuring coil 501 can be used to accurately measure the vibration of the steel string 404, and the measurement data is transmitted to the vibrating string reading device 3 through the signal cable 502.

[0039] To ensure stable limiting and positioning of the bracket body 100, the positioning module 300 may include a first connecting structure connected to the first bracket 106 and a second connecting structure connected to the second bracket 105. The first connecting structure and the second connecting structure are used to connect the object to be measured. When connecting, any method that can be achieved, such as snap-on, bonding, and magnetic attraction, can be used.

[0040] In a specific solution, the first connection structure may include a group of first strong magnetic components, and the second connection structure may include a group of second strong magnetic components. That is to say, the bracket body 100 is limited by magnetically connecting the first strong magnetic components and the second strong magnetic components to the object to be measured. It should be noted that due to the use of magnetic connection, the object to be measured needs to be a ferromagnetic material so that it can be magnetically attracted to the first strong magnetic components and the second strong magnetic components.

[0041] In addition, the first connection structure may also include two groups of first strong magnetic components, which are spaced apart in the width direction of the first bracket 106, and the second connection structure includes two groups of second strong magnetic components, which are spaced apart in the width direction of the second bracket 105. The purpose of the above arrangement is to make the first connection structure and the second connection structure adapt to the non-planar object to be tested such as the pipe 2, and to connect the bracket body 100 to the object to be tested more stably.

[0042] Furthermore, the first strong magnetic component may include a first column 301, a first spring 302 and a first strong magnet 303, the first column 301 passes through the first bracket 106, the first spring 302 is sleeved on the side of the first column 301 away from the object to be measured, one end of the first spring 302 abuts the end of the first column 301, the other end of the first spring 302 abuts the first bracket 106, and the first strong magnet 303 is connected to the side of the first column 301 close to the object to be measured; when the first strong magnet 303 is magnetically attracted to the object to be measured, the elastic force of the first spring 302 can be used to elastically press the first pressure block 101 of the first bracket 106 onto the first mounting seat 401 of the vibrating wire strain gauge 400. The second strong magnetic component may include a second column 304, a second spring 305 and a second strong magnet 306. The second column 304 passes through the second bracket 105. The second spring 305 is sleeved on the side of the second column 304 away from the object to be measured. One end of the second spring 305 abuts the end of the second column 304, and the other end of the second spring 305 abuts the second bracket 105. The second strong magnet 306 is connected to the side of the second column 304 close to the object to be measured. When the second strong magnet 306 is magnetically attracted to the object to be measured, the elastic force of the second spring 305 can be used to elastically press the second pressure block 102 of the second bracket 105 onto the second mounting seat 402 of the vibrating wire strain gauge 400.

[0043] A reinforcing plate may also be included, which is connected to one side of the first bracket 106 of the cross-shaped elastic body. The reinforcing plate is provided with a process hole for easy carrying and taking, and also has the effect of reducing weight.

[0044] Taking the installation of the vibrating wire strain gauge 400 on the pipeline 2 as an example, the installation process is described as follows:

[0045] The first step is to fix the vibrating wire strain gauge 400 on the surface of the pipe 2 through the vibrating wire strain gauge auxiliary installation device 1, ensure that the mounting seat of the vibrating wire strain gauge 400 is in good contact with the surface of the pipe 2, and ensure that the steel string 404 is parallel to the axis of the pipe 2;

[0046] The second step is to connect the signal cable 502 of the vibrating wire strain gauge 400 to the vibrating wire reading device 3 to read the data of the vibrating wire strain gauge 400;

[0047] The third step is to adjust the adjustment knob 203 of the auxiliary installation device 1 of the vibrating wire strain gauge according to the difference between the state of the vibrating wire strain gauge 400 and the design initial value, so as to stretch or compress the vibrating wire strain gauge 400 to meet the tension requirement;

[0048] Step 4: After adjustment, prepare to enter the welding and fixing stage;

[0049] Step 5: Fix the vibrating wire strain gauge 400 by welding with a cold welding machine.

[0050] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A vibrating wire strain gauge auxiliary installation device, characterized in that: It includes a bracket body and a measuring module, an adjusting module and a positioning module installed on the bracket body. The adjusting module is used to adjust the tension degree of the vibrating wire strain gauge, the measuring module is used to monitor the tension degree of the vibrating wire strain gauge, and the positioning module is used to limit the bracket body to the object to be measured.

2. The vibrating wire strain gauge auxiliary installation device according to claim 1, characterized in that: The bracket body includes a first bracket and a second bracket, the adjustment module includes an adjustment structure for adjusting the distance between the first bracket and the second bracket, and a first limiting structure and a second limiting structure respectively installed on the first bracket and the second bracket, the first limiting structure and the second limiting structure are respectively used to limit a first mounting seat and a second mounting seat of a vibrating wire strain gauge.

3. The vibrating wire strain gauge auxiliary installation device according to claim 2, characterized in that: The first bracket and the second bracket are connected at the ends to form an X-shaped elastic body. The adjustment structure includes a stud and an adjustment knob connected to the stud. The adjustment knob is located on one side of the second bracket of the X-shaped elastic body. The stud is threadedly connected to the second bracket and abuts against the first bracket.

4. The vibrating wire strain gauge auxiliary installation device according to claim 2, characterized in that: The first limiting structure includes a first paddle and a first pressure block, the first paddle is used to be placed on the inner side of the first mounting seat, and the first pressure block is used to be placed on the top of the first mounting seat; the second limiting structure includes a second paddle and a second pressure block, the second paddle is used to be placed on the inner side of the second mounting seat, and the second pressure block is used to be placed on the top of the second mounting seat.

5. The vibrating wire strain gauge auxiliary installation device according to claim 4, characterized in that: The measuring module includes a measuring coil and a signal cable connected to the measuring coil. The measuring coil is installed on the first bracket, and the measuring coil is located between the first paddle and the second paddle.

6. The vibrating wire strain gauge auxiliary installation device according to claim 2, characterized in that: The positioning module includes a first connection structure connected to the first bracket and a second connection structure connected to the second bracket, and the first connection structure and the second connection structure are used to connect the object to be measured.

7. The vibrating wire strain gauge auxiliary installation device according to claim 6, characterized in that: The first connection structure includes a group of first strong magnetic components, and the second connection structure includes a group of second strong magnetic components.

8. The vibrating wire strain gauge auxiliary installation device according to claim 6, characterized in that: The first connection structure includes two groups of first strong magnetic components, which are distributed at intervals in the width direction of the first bracket. The second connection structure includes two groups of second strong magnetic components, which are distributed at intervals in the width direction of the second bracket.

9. The vibrating wire strain gauge auxiliary installation device according to claim 7 or 8, characterized in that: The first strong magnetic component includes a first column, a first spring and a first strong magnet, the first column passes through the first bracket, the first spring is sleeved on the side of the first column away from the object to be measured, one end of the first spring abuts the end of the first column, the other end of the first spring abuts the first bracket, and the first strong magnet is connected to the side of the first column close to the object to be measured; the second strong magnetic component includes a second column, a second spring and a second strong magnet, the second column passes through the second bracket, the second spring is sleeved on the side of the second column away from the object to be measured, one end of the second spring abuts the end of the second column, the other end of the second spring abuts the second bracket, and the second strong magnet is connected to the side of the second column close to the object to be measured.

10. The vibrating wire strain gauge auxiliary installation device according to claim 3, characterized in that: It also includes a reinforcing plate, which is connected to one side of the first bracket of the X-shaped elastic body, and the reinforcing plate is provided with a process hole.

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