Vibrating wire type water-pressure-resistant strain gauge

Abstract

The utility model belongs to the technical field of strain gauges, and particularly relates to a vibrating wire type water-pressure-resistant strain gauge, which comprises a sensor, two ends of the sensor are provided with length-adjustable protective tube structures, the surfaces of the end parts of the protective tube structures are provided with mounting structures, and the mounting structures are welded and fixed with an external structure. The mounting structure comprises a lower mounting seat used for placing the protective pipe structure, a position-adjustable upper mounting seat is arranged at the top of the lower mounting seat, and a locking piece is arranged at the center position of the upper mounting seat; according to the utility model, the original only installation is changed into clamping fixation through the installation structure, so that after the protection tube structure is placed at the installation structure, the protection tube structure can be effectively fixed according to the different sizes of the protection tube structure, and meanwhile, after the protection tube structure is used, the protection tube structure can be conveniently fixed. And when the protective tube structure and the sensor need to be disassembled, the disassembly is relatively simple and convenient, and the use convenience of the whole structure is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of strain gauges, in particular to a vibrating-wire type water pressure resistant strain gauge. Background Art

[0002] The vibrating wire water pressure resistant strain gauge is a device used for safety monitoring, especially suitable for measuring the strain of various structures, such as pipelines, steel structures, steel sheet piles and bridges. This strain gauge has the characteristics of water pressure resistance and can withstand a certain amount of water pressure. It is suitable for underwater or humid environment applications. The vibrating wire water pressure resistant strain gauge has the characteristics of large measurement range, high sensitivity, vibration resistance, and no bellows. The working principle of the vibrating wire water pressure resistant strain gauge is based on the vibrating wire effect. It consists of a front seat, a rear seat, a stainless steel protective tube, an observation cable, a vibrating wire and an exciting electromagnetic coil. When strain occurs, the vibration frequency of the vibrating wire will change. This change can be measured and recorded, thereby realizing the monitoring of strain. Since the front and rear seats are often welded or cast at the structure to be detected, the general stainless steel protective tube is placed at the front and rear seats and then installed, so as to ensure the convenience of disassembly of the detection part after detection. However, during installation, it is inconvenient to adjust the degree of clamping according to the thickness of the protective tube at the sensor installation location, which affects the stability after installation when installing different sizes. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a vibrating-wire water pressure resistant strain gauge to more accurately solve the problems raised in the above background technology.

[0004] The utility model is realized by the following technical solutions:

[0005] The utility model proposes a vibrating-wire water-resistant pressure strain gauge, comprising a sensor, wherein both ends of the sensor are provided with a protective tube structure with adjustable length, an installation structure is provided at the end surface of the protective tube structure, the installation structure is welded and fixed to an external structure, the installation structure comprises a lower mounting seat for placing on the protective tube structure, an upper mounting seat with adjustable position is provided on the top of the lower mounting seat, a locking piece is provided at the center position of the upper mounting seat, and the locking piece is used to clamp the protective tube structure.

[0006] Preferably, it comprises a threaded ring 1 installed on the top of the upper mounting seat, a threaded rod 1 is threadedly connected to the inner wall of the threaded ring 1, a pressure plate is rotatably connected to the bottom of the threaded rod 1, and the pressure plate is inserted into the bottom of the upper mounting seat.

[0007] Preferably, the limiting member comprises a second threaded ring mounted on the top of the upper mounting seat and rotatably connected thereto, a second threaded rod is threadedly connected to the second threaded ring, and a bottom of the second threaded rod is connected to the lower mounting seat.

[0008] Preferably, a movable groove is provided at the upper mounting seat, and the pressing plate is located in the movable groove and slides with the inner wall thereof.

[0009] Preferably, the protective tube structure comprises a connecting rod connected to the sensor, a connecting sleeve is sleeved on the connecting rod, and the connecting rod and the connecting sleeve are detachably connected.

[0010] Preferably, a nut is installed on the surface of the connecting sleeve, a bolt is threadedly connected to the inner wall of the nut, and a plurality of insertion holes are provided at the connecting rod, and the bolts are inserted into the insertion holes.

[0011] Compared with the prior art, the utility model provides a vibrating wire water pressure resistant strain gauge, which has the following beneficial effects:

[0012] The vibrating-wire water-resistant strain gauge is changed from the original installation to clamping and fixing by setting up the installation structure, so that after the protective tube structure is placed on the installation structure, it can be effectively fixed according to the different sizes of the protective tube structure. At the same time, after use, when the protective tube structure and the sensor need to be disassembled, the disassembly is also relatively simple and convenient, which effectively ensures the convenience of use of the entire structure.

[0013] The vibrating-wire water-resistant strain gauge changes the original fixed-length protective tube structure into an adjustable structure, so that when the entire structure is installed, when the welding or installation position of the installation structure changes, it can be effectively adjusted, thereby ensuring stable and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a vibrating-wire water pressure resistant strain gauge proposed by the utility model;

[0015] Figure 2 This is a left view of the structure of a vibrating-wire water pressure resistant strain gauge proposed by the utility model;

[0016] Figure 3 The utility model provides a vibrating wire type water pressure resistant strain gauge Figure 1 A magnified schematic diagram of the middle A area;

[0017] Figure 4 The utility model provides a structural schematic diagram of a vibrating-wire type water pressure resistant strain gauge installation structure.

[0018] In the figure: 1. sensor; 2. protective tube structure; 21. connecting sleeve; 22. connecting rod; 23. socket; 24. nut; 25. bolt; 3. mounting structure; 31. lower mounting seat; 32. upper mounting seat; 321. movable groove; 33. locking piece; 331. threaded ring 1; 332. threaded rod 1; 333. pressure plate; 34. limit piece; 341. threaded ring 2; 342. threaded rod 2. DETAILED DESCRIPTION

[0019] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0020] Example

[0021] like Figure 1-Figure 4 As shown, a vibrating-wire water-resistant strain gauge proposed in one embodiment of the utility model comprises a sensor 1, and a protective tube structure 2 with adjustable length is arranged at both ends of the sensor 1, and a mounting structure 3 is arranged at the end surface of the protective tube structure 2, and the mounting structure 3 is welded and fixed to the external structure, and the mounting structure 3 comprises a lower mounting seat 31 for placing the protective tube structure 2, and a position-adjustable upper mounting seat 32 is arranged on the top of the lower mounting seat 31, and a locking member 33 is arranged at the center position of the upper mounting seat 32, and the locking member 33 is used to clamp the protective tube structure 2.

[0022] In the utility model, when the entire structure is used, by setting the length of the protective tube structure 2 as an adjustable structure, the installation length can be effectively adjusted according to the installation structure 3, and the connecting sleeve 21 is placed on the lower mounting seat 31, and then the upper mounting seat 32 is used to limit the connecting sleeve 21 under the adjustment of the limiting member 34, and then the locking member 33 is used to further lock it, thereby effectively ensuring the installation effect of the entire protective tube structure 2.

[0023] Among them, the locking member 33 includes a threaded ring 331 installed on the top of the upper mounting seat 32, a threaded rod 332 is threadedly connected to the inner wall of the threaded ring 331, and a pressure plate 333 is rotatably connected to the bottom of the threaded rod 332, and the pressure plate 333 is inserted into the bottom of the upper mounting seat 32.

[0024] In the utility model, when the locking member 33 is used, the threaded rod 332 is continuously inserted into the bottom of the upper mounting seat 32 through the threaded connection between the threaded rod 332 and the threaded ring 331, so that the pressure plate 333 contacts the connecting sleeve 21, thereby achieving the effect of clamping the connecting sleeve 21, ensuring that the connecting sleeve 21 can be effectively fixed after its size changes.

[0025] The limiting member 34 includes a second threaded ring 341 installed on the top of the upper mounting seat 32 and rotatably connected thereto, a second threaded rod 342 is threadedly connected to the second threaded ring 341 , and the bottom of the second threaded rod 342 is connected to the lower mounting seat 31 .

[0026] In the utility model, when the limit member 34 is used, the fixed position of the limit member 34 and the threaded rod 342 is adjusted by rotating the threaded ring 341, thereby adjusting the gap between the upper mounting seat 32 and the lower mounting seat 31, so that when the connecting sleeve 21 is clamped, the stability of the clamping is effectively guaranteed.

[0027] The upper mounting seat 32 is provided with a moving groove 321 , and the pressing plate 333 is located in the moving groove 321 and slides with the inner wall thereof.

[0028] In the present invention, when the pressing plate 333 is used, the movable groove 321 is provided to limit the pressing plate 333, thereby effectively ensuring that the pressing plate 333 will not rotate with the rotation of the threaded rod 332.

[0029] The protective tube structure 2 includes a connecting rod 22 connected to the sensor 1 , a connecting sleeve 21 is sleeved on the connecting rod 22 , and the connecting rod 22 and the connecting sleeve 21 are detachably connected.

[0030] In the present invention, the connecting rod 22 is inserted into the connecting sleeve 21 and the length of the connecting rod 22 is changed to adjust the overall length of the protective tube structure 2 .

[0031] A nut 24 is installed on the surface of the connecting sleeve 21 , a bolt 25 is threadedly connected to the inner wall of the nut 24 , and a plurality of insertion holes 23 are provided at the connecting rod 22 , and the bolts 25 are inserted into the insertion holes 23 .

[0032] In the utility model, when in use, after the connecting rod 22 is inserted into the appropriate position in the connecting sleeve 21, the bolt 25 is inserted into the corresponding insertion hole 23 and threadedly connected with the nut 24, thereby effectively ensuring the fixation of the protective tube structure 2 after the length is adjusted.

[0033] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only an example and does not constitute a limitation of this specification. Although it is not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification. At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "one embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "one embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined. In addition, unless explicitly stated in the claims, the order of processing elements and sequences described in this specification, the use of alphanumeric characters, or the use of other names are not used to limit the order of the processes and methods of this specification.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vibrating wire water pressure resistant strain gauge, comprising a sensor (1), characterized in that: The sensor (1) is provided with a protective tube structure (2) with adjustable length at both ends, and a mounting structure (3) is provided at the end surface of the protective tube structure (2). The mounting structure (3) is welded and fixed to the external structure, and the mounting structure (3) includes a lower mounting seat (31) for placing the protective tube structure (2). The top of the lower mounting seat (31) is provided with an upper mounting seat (32) with adjustable position, and the upper mounting seat (32) is provided with a locking member (33) at the center position, and the locking member (33) is used to clamp the protective tube structure (2).

2. A vibrating wire water pressure resistant strain gauge according to claim 1, characterized in that: The locking member (33) comprises a threaded ring (331) mounted on the top of the upper mounting seat (32); a threaded rod (332) is threadedly connected to the inner wall of the threaded ring (331); a pressure plate (333) is rotatably connected to the bottom of the threaded rod (332); and the pressure plate (333) is inserted into the bottom of the upper mounting seat (32).

3. The vibrating wire water pressure resistant strain gauge according to claim 1, characterized in that: The limiting member (34) comprises a second threaded ring (341) mounted on the top of the upper mounting seat (32) and rotatably connected thereto, a second threaded rod (342) being threadedly connected to the second threaded ring (341), and a bottom of the second threaded rod (342) being connected to the lower mounting seat (31).

4. The vibrating wire water pressure resistant strain gauge according to claim 2, characterized in that: The upper mounting seat (32) is provided with a movable groove (321), and the pressing plate (333) is located in the movable groove (321) and slides with the inner wall thereof.

5. The vibrating wire water pressure resistant strain gauge according to claim 1, characterized in that: The protective tube structure (2) comprises a connecting rod (22) connected to the sensor (1), a connecting sleeve (21) is sleeved on the connecting rod (22), and the connecting rod (22) and the connecting sleeve (21) are detachably connected.

6. A vibrating wire water pressure resistant strain gauge according to claim 5, characterized in that: A nut (24) is installed on the surface of the connecting sleeve (21), and a bolt (25) is threadedly connected to the inner wall of the nut (24). A plurality of insertion holes (23) are provided on the connecting rod (22), and the bolts (25) are inserted into the insertion holes (23).

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