Fixing device of vibrating wire strain gauge

Abstract

The utility model discloses a fixing device for a vibrating wire strain gauge, which comprises a support for fixing the vibrating wire strain gauge, standard steel sheet groups are rotatably connected to two ends of the support, each standard steel sheet group is formed by sequentially and rotatably connecting a plurality of standard steel sheets, the standard steel sheet at the front end of each standard steel sheet group is rotatably connected with the support, and the standard steel sheet at the rear end of each standard steel sheet group is rotatably connected with the support. The standard steel sheet at the tail end of each standard steel sheet group is connected with one tail steel sheet, and the two tail steel sheets are fixedly connected, so that the support, the standard steel sheet groups and the tail steel sheets are annularly fixed on the pipeline to be monitored. According to the utility model, the vibrating wire strain gauge can be conveniently and rapidly fixed on the pipeline, and the long-term monitoring requirement can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to structural safety monitoring technical field, concretely relates to a vibrating wire strain gauge's fixing device. BACKGROUND

[0002] In structural safety monitoring, vibrating wire strain gauge is often used to monitor the stress strain of structure, vibrating wire sensor is a kind of resonant sensor with tensioned metal string as sensitive element, and its working principle is that when the length of string is determined, the change of its natural vibration frequency can represent the size of the tension of string.This sensor has the advantages of data easy to analyze, high accuracy, clear physical condition in the application of stress strain monitoring.The traditional vibrating wire strain gauge is mostly suitable for the monitoring of main structure, such as roof outer wall bridge structure, and the fixing mode is mostly punching installation, welding or gluing.

[0003] Vibrating wire strain gauge has high requirements on installation position and mode, and when monitoring pipeline facility deformation, vibrating steel string needs to be fixed on pipeline, and steel string and pipeline are deformed cooperatively to reflect the deformation condition of pipeline.Due to the fact that pipeline structure cannot be punched and installed, and cannot be welded, the current traditional installation mode is mainly gluing, and this method has certain limitations, cannot be used for long-term monitoring, and the performance of glue is sensitive to temperature, and cannot be applied to the monitoring of high-temperature pipeline.

[0004] Based on the above problems, a vibrating wire strain gauge fixing device is needed, which does not need to punch and install or weld, can adapt to long-term monitoring and has low temperature sensitivity. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a vibrating wire strain gauge fixing device, which can conveniently and quickly fix vibrating wire strain gauge on pipeline and meet long-term monitoring requirements.

[0006] To achieve the above object, the utility model is realized by the following technical scheme.

[0007] A vibrating wire strain gauge fixing device, including the support for fixing vibrating wire strain gauge, both ends of the support are rotatably connected with standard steel sheet group, the standard steel sheet group is rotatably connected with a plurality of standard steel sheets in sequence, the standard steel sheet at the front end of each standard steel sheet group is rotatably connected with the support, the standard steel sheet at the tail end of each standard steel sheet group is connected with a tail steel sheet, and the two tail steel sheets are fixedly connected to make the support, standard steel sheet group and tail steel sheet circumferentially fixed on the pipeline to be monitored.

[0008] The utility model discloses a standard steel piece group can be formed by the modular design standard steel piece, and the standard steel piece group can flexibly select the number of standard steel pieces according to the size of the pipeline to be monitored to achieve the purpose that the standard steel piece is as far as possible attached to the outer surface of the pipeline to be monitored, and can realize monitoring of pipelines of various diameters.

[0009] The utility model has the following preferred design:

[0010] One end of the standard steel piece is provided with a protruding block, and the other end is provided with a notched portion, a first through hole is formed between the end portion of the standard steel piece and the connected support or another adjacent standard steel piece or tail steel piece, and a detachable first bolt is installed in the first through hole to rotatably connect the two ends of the standard steel piece with the support or another adjacent standard steel piece or the tail steel piece. This structure can connect the standard steel pieces into a strip, and the steel pieces are easy to bend, thereby adapting to single pipelines or multiple pipelines of different shapes, sizes and rules.

[0011] The end of the tail steel piece is provided with a bent plate, a second through hole is formed in the bent plate, and the ends of the two tail steel pieces are fixedly connected by a second bolt penetrating through the second through holes of the two bent plates. This connecting structure adjusts the length of the second bolt connecting the tail steel pieces to adapt to pipelines of different sizes, widens the applicable pipeline size range, forms a kind of lasso structure for the whole device, and realizes fixation on pipelines of any type, size and quantity.

[0012] The support includes a limiting block in contact with the pipeline to be monitored and a limiting plate, the limiting plate is rotatably connected to the limiting block at one end through a rotating column, and is fixedly connected to the limiting block at the other end through a fixing nail, and an installation hole for fixing a vibrating wire strain gauge is formed between the limiting block and the limiting plate. This structure facilitates the installation and fixation of the vibrating wire strain gauge.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model can adjust the size by disassembling or adding standard steel pieces to adapt to pipelines of different specifications. The advantage of this connection is that the angle between the two steel pieces can be arbitrarily rotated, thereby surrounding and connecting pipelines of different diameters, irregular pipelines, two pipelines or three pipelines, etc.

[0015] The utility model has a simple and fast installation process, reduces the installation time, and is easy to disassemble.

[0016] The utility model can also adjust the length of the second bolt connecting the tail steel pieces to adapt to pipelines of different sizes.

[0017] The adjustable characteristic of the utility model allows the vibrating wire strain gauge to closely adhere to the surface of the pipeline, so that more accurate strain measurement is performed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a sectional structure view of the fixing device of the vibrating wire strain gauge of the utility model;

[0019] Figure 2 is Figure 1 a side view of the fixing device of the vibrating wire strain gauge;

[0020] The reference signs are as follows: 1, vibrating wire strain gauge; 2, support; 3, first bolt; 4, standard steel sheet; 5, tail steel sheet; 6, second bolt; 7, protruding block; 8, recess; 9, first through hole; 10, limiting block; 11, limiting plate; 12, rotating column; 13, fixing nail; 14, bent plate; 15, second through hole. DETAILED DESCRIPTION

[0021] In the following description, specific details are set forth such as particular system configurations, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, persons skilled in the art will understand that the present application can be practiced without these specific details. In other instances, well-known structures, devices, circuits, and methods have not been described in detail in order to avoid obscuring the description of the present application.

[0022] It should be understood that the term "comprising" as used in the specification and in the claims indicates the presence of the recited features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0023] Please refer to Figure 1 A fixing device of a vibrating wire strain gauge, comprising a support 2 for fixing the vibrating wire strain gauge 1, and a standard steel sheet group rotatably connected at both ends of the support 2, wherein the standard steel sheet group is formed by a plurality of standard steel sheets 4 rotatably connected in sequence, the standard steel sheet 4 at the front end of each standard steel sheet group is rotatably connected with the support 2, the standard steel sheet 4 at the tail end of each standard steel sheet group is connected with a tail steel sheet 5, and the two tail steel sheets 5 are fixedly connected to fix the support 2, the standard steel sheet group, and the tail steel sheet 5 in a ring shape on a pipeline to be monitored.

[0024] In an embodiment, as Figure 2As shown, one end of the standard steel sheet 4 is provided with a protrusion 7, and the other end is provided with a notch 8. The end of the standard steel sheet 4 is connected with the support 2 or another adjacent standard steel sheet 4 or the tail steel sheet 5 to form a first through hole 9. The first bolt 3 is installed in the first through hole 9 to rotatably connect the two ends of the standard steel sheet 4 with the support 2 or another adjacent standard steel sheet 4 or the tail steel sheet 5. Such a structure can connect the standard steel sheets 4 into a strip, and the steel sheet is easy to bend, thereby adapting to different shapes and sizes of a single pipeline or multiple pipelines.

[0025] In an embodiment, the end of the tail steel sheet 5 is provided with a bent plate 14, and the second through hole 15 is formed in the bent plate 14. The ends of the two tail steel sheets 5 are fixedly connected by the second bolt penetrating the second through holes 15 of the two bent plates 14. Such a connection structure adjusts the length of the second bolt connecting the tail steel sheets 5 to adapt to pipelines of different sizes, which can widen the range of applicable pipeline sizes and make the device form a kind of lasso structure to be fixed on pipelines of any type, any size and any number.

[0026] In an embodiment, the support 2 includes a limiting block 10 in contact with the pipeline to be monitored and a limiting plate 11 rotatably connected with the limiting block 10 at one end by a rotating column 12 and fixedly connected with the limiting block 10 at the other end by a fixed nail 13. The limiting block 10 and the limiting plate 11 form an installation hole for fixing the vibrating wire strain gauge 1. Such a structure facilitates the installation and fixation of the vibrating wire strain gauge 1.

[0027] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or equivalently replace some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fixing device for a vibrating wire strain gauge, comprising a support (2) for fixing a vibrating wire strain gauge (1), characterized in that: Both ends of the support (2) are rotatably connected with standard steel sheet groups, the standard steel sheet groups are sequentially rotatably connected with a plurality of standard steel sheets (4), the standard steel sheet (4) at the front end of each standard steel sheet group is rotatably connected with the support (2), the standard steel sheet (4) at the tail end of each standard steel sheet group is connected with a tail steel sheet (5), and the two tail steel sheets (5) are fixedly connected to make the support (2), the standard steel sheet group and the tail steel sheet (5) circumferentially fixed on the pipeline to be monitored.

2. A fixed device of a vibrating wire strain gauge according to claim 1, characterized in that: One end of the standard steel sheet (4) is provided with a protrusion (7), and the other end is provided with a notch (8), the end of the standard steel sheet (4) and the connected support (2) or another adjacent standard steel sheet (4) or tail steel sheet (5) form a through first through hole (9), and the first through hole (9) is provided with a detachable first bolt (3) to rotatably connect the two ends of the standard steel sheet (4) with the support (2) or another adjacent standard steel sheet (4) or the tail steel sheet (5).

3. A fixed device of a vibrating wire strain gauge according to claim 1, characterized in that: The tail steel sheet (5) is provided with a bent plate (14) at the tail end, the bent plate (14) is provided with a second through hole (15), and the tail ends of the two tail steel sheets (5) are fixedly connected by penetrating the second through holes (15) of the two bent plates (14) through a second bolt.

4. The fixed device of the vibrating wire strain gauge according to claim 1, characterized in that: The support (2) comprises a limiting block (10) and a limiting plate (11) in contact with the pipeline to be monitored, the limiting plate (11) is rotatably connected with the limiting block (10) at one end through a rotating column (12), and is fixedly connected with the limiting block (10) at the other end through a fixed nail (13) and a mounting structure, and the limiting block (10) and the limiting plate (11) form a mounting hole for fixing the vibrating wire strain gauge (1).

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