Distributed optical fiber detector

Abstract

The utility model belongs to the technical field of mechanical structure detection, and particularly relates to a distributed optical fiber detector which comprises a supporting part, an adjusting part and a detecting part, the supporting part comprises a welding base, a rotating hole and a knob bolt, the center of the welding base is provided with the rotating hole, and the side wall of the welding base is connected with the knob bolt extending into the rotating hole; the adjusting part is connected to the rotating hole and comprises a supporting block, a supporting groove and a rotating shaft, the supporting groove is formed in the top of the supporting block, and the rotating shaft connected with the rotating hole is arranged at the bottom of the supporting block; the detection part is arranged in the supporting groove, the detection position of the detection part can be adjusted through the adjusting part after installation, the deviation problem caused by the fact that the detection part is directly welded to the detected part is avoided, and the detection effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical structure detection, in particular to a distributed optical fiber detector. Background Art

[0002] In the structural health monitoring system, optical fiber sensors are used as the main instruments for signal collection. They are usually pasted on the surface of the structure or embedded in the structure. There are three main methods for installing optical fiber sensors on the surface of steel structures: pasting, riveting and spot welding. Among them, the pasting method is limited by the performance of glue, has low strain transfer efficiency, poor long-term stability, and does not meet the requirements of long-term monitoring; the riveting method requires opening holes in the structure to be measured, which destroys the original structure and is usually not allowed; the spot welding method has the advantages of stable strain transfer performance, high connection strength, and no damage to the structure to be measured. It is suitable for long-term monitoring in harsh environments and is the most ideal installation method in engineering applications.

[0003] However, due to the small size, light weight and high sensitivity of the optical fiber sensor, a slight shake during welding will cause a large shift in the monitoring position, affecting the detection effect. In order to ensure the detection effect after welding, this application proposes a distributed optical fiber detector. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing distributed optical fiber detection, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a distributed optical fiber detector, which can adjust the detection position of the detection component by using the adjustment component after installation, avoiding the offset problem caused by directly welding the detection component to the detected object, and ensuring the detection effect.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A distributed optical fiber detector, comprising:

[0009] The supporting component comprises a welding base, a rotating hole and a knob bolt, wherein the rotating hole is provided at the center of the welding base, and the side wall of the welding base is connected to the knob bolt extending into the rotating hole;

[0010] An adjusting component connected to the rotating hole, the adjusting component comprising a supporting block, a supporting groove and a rotating shaft, the supporting block has a supporting groove at the top, and a rotating shaft connected to the rotating hole is arranged at the bottom of the supporting block;

[0011] The detection component is arranged in the supporting groove.

[0012] As a preferred solution of the distributed optical fiber detector described in the utility model, a locking component is arranged outside the knob bolt, and the locking component adopts a double-nut locking structure.

[0013] As a preferred solution of the distributed optical fiber detector described in the utility model, wherein: the four corners of the welding base are provided with sockets, and magnets are plugged into the sockets.

[0014] As a preferred solution of the distributed optical fiber detector described in the utility model, wherein: fastening bolts are arranged on both sides of the left and right sides of the support block, and the fastening bolts are countersunk bolts extending into the support grooves.

[0015] As a preferred solution of the distributed optical fiber detector described in the utility model, the detection component adopts an optical fiber sensor.

[0016] As a preferred solution of the distributed optical fiber detector described in the utility model, the outer wall of the rotating shaft is provided with evenly distributed anti-slip ridges.

[0017] As a preferred solution of the distributed optical fiber detector described in the utility model, a protective gasket is provided at the contact position between the detection component and the fastening bolt, and the protective gasket is a rubber gasket.

[0018] Compared with the prior art: the utility model adopts a welding base to connect with the detected part, and a movable adjusting component is arranged on the welding base. The detection component is installed on the adjusting component. The detection position of the detection component can be adjusted by using the adjusting component after installation, thereby avoiding the deviation problem caused by directly welding the detection component to the detected part, and ensuring the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 This is a schematic diagram of the shaft side structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the support component of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the regulating component of the utility model.

[0023] In the figure: 100 supporting component, 110 welding base, 120 rotating hole, 130 knob bolt, 131 locking component, 140 socket, 200 adjusting component, 210 supporting block, 220 supporting groove, 230 rotating shaft, 240 fastening bolt, 300 detecting component, 400 magnet. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] The utility model provides a distributed optical fiber detector, which can adjust the detection position of the detection component by using the adjustment component after installation, avoiding the deviation problem caused by directly welding the detection component on the detected object, and ensuring the detection effect. Figure 1-Figure 3 , including: a supporting component 100, an adjusting component 200 and a detecting component 300.

[0029] The supporting component 100 includes a welding base 110, a rotating hole 120 and a knob bolt 130. The rotating hole 120 is provided at the center of the welding base 110, and the side wall of the welding base 110 is connected to the knob bolt 130 extending into the rotating hole 120.

[0030] The bottom of the welding base 110 is welded and fixed on the inspected part, and the rotating hole 120 provides a movable space. The knob bolt 130 is rotated, and the knob bolt 130 extends into the rotating hole 120 under the action of thread feeding.

[0031] The adjusting component 200 is connected to the rotating hole 120. The adjusting component 200 includes a supporting block 210, a supporting groove 220 and a rotating shaft 230. The supporting block 210 has a supporting groove 220 at the top and a rotating shaft 230 connected to the rotating hole 120 at the bottom.

[0032] The support block 210 can be rotated in the rotating hole 120 through the rotating shaft 230 to adjust the direction of the supporting groove 220. After the adjustment, the rotating shaft 230 is positioned by tightening the knob bolt 130 to avoid position changes after the adjustment.

[0033] The detection component 300 is disposed in the support groove 220. Specifically, the detection component 300 adopts an optical fiber sensor, and adopts a distributed optical fiber sensor to detect the detected object.

[0034] Since the knob bolt 130 is needed to position the rotating shaft 230 after adjustment, this positioning utilizes the knob bolt 130 to press against the rotating shaft 230, and prevents the rotating shaft 230 from rotating under the action of friction and clamping force. However, the knob bolt 130 itself is prone to loosening after rotation, affecting the positioning effect. For this reason, a locking component 131 is provided on the outside of the knob bolt 130. The locking component 131 adopts a double-nut locking structure. After adjustment, the knob bolt 130 is locked by the locking component 131 to prevent the knob bolt 130 from loosening.

[0035] Since the optical fiber sensor is small in size, light in weight, and highly sensitive, a slight offset will lead to a large deviation. The welding base 110 is directly placed on the detected part for welding without a corresponding positioning and fixing structure. It needs to be supported for welding, which is inconvenient for welding operation. The welding base 110 is provided with sockets 140 at the four corners, and magnets 400 are plugged into the sockets 140.

[0036] The welding base 110 is adsorbed on the inspected part by the magnet 400 to perform pre-positioning before welding, and there is no need to excessively support the welding base 110 during welding, which facilitates the welding operation.

[0037] Since the detection component 300 is embedded in the support groove 220, the embedded structure is easy to fall off. For this reason, fastening bolts 240 are provided on both sides of the left and right sides of the support block 210. The fastening bolts 240 are countersunk bolts that extend into the support groove 220. After embedding, they are fastened by the fastening bolts 240 to improve the stability of the structural connection.

[0038] Since the outer wall of the rotating shaft 230 is smooth, the knob bolt 130 is still easy to slip after being pressed against the rotating shaft 230. Therefore, the outer wall of the rotating shaft 230 is provided with evenly distributed anti-skid ridges to increase the contact friction between the rotating shaft 230 and the knob bolt 130 and improve the stability during positioning.

[0039] Since the fastening bolt 240 needs to be clamped outside the detection component 300, it is easy to damage the detection component 300. For this reason, a protective gasket is provided at the contact position between the detection component 300 and the fastening bolt 240. The protective gasket is a rubber gasket. The protective gasket is used to protect the detection component 300 to prevent the detection component 300 from being damaged.

[0040] During specific use, the welding base 110 is adsorbed on the inspected workpiece by the magnet 400 for pre-positioning before welding, and then the welding base 110 is welded to the inspected workpiece. Since the direction of the detection probe of the detection component 300 will be slightly deflected during the welding process, affecting the detection accuracy, after welding, the support block 210 is rotated to adjust the direction of the detection component 300 so that the probe of the detection component 300 faces the detection position. After adjustment, the rotating shaft 230 is positioned by tightening the knob bolt 130 to avoid position change after adjustment, and the knob bolt 130 is locked by the locking component 131 to prevent the knob bolt 130 from loosening.

[0041] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A distributed optical fiber detector, characterized in that: include: The supporting component (100) comprises a welding base (110), a rotating hole (120) and a knob bolt (130), wherein the rotating hole (120) is provided at the center of the welding base (110), and the side wall of the welding base (110) is connected to the knob bolt (130) extending into the rotating hole (120); an adjusting component (200) connected to the rotating hole (120), the adjusting component (200) comprising a supporting block (210), a supporting groove (220) and a rotating shaft (230), the supporting block (210) having a supporting groove (220) at the top, and a rotating shaft (230) connected to the rotating hole (120) at the bottom of the supporting block (210); The detection component (300) is arranged in the supporting groove (220).

2. A distributed optical fiber detector according to claim 1, characterized in that: A locking component (131) is arranged outside the knob bolt (130), and the locking component (131) adopts a double-nut locking structure.

3. A distributed optical fiber detector according to claim 1, characterized in that: The four corners of the welding base (110) are each provided with an insertion hole (140), and a magnet (400) is inserted into each of the insertion holes (140).

4. A distributed optical fiber detector according to claim 1, characterized in that: The left and right sides of the support block (210) are both provided with fastening bolts (240), and the fastening bolts (240) are countersunk bolts extending into the support groove (220).

5. A distributed optical fiber detector according to claim 1, characterized in that: The detection component (300) adopts an optical fiber sensor.

6. A distributed optical fiber detector according to claim 1, characterized in that: The outer wall of the rotating shaft (230) is provided with evenly distributed anti-slip ridges.

7. A distributed optical fiber detector according to claim 4, characterized in that: A protective gasket is provided at the contact position between the detection component (300) and the fastening bolt (240), and the protective gasket is a rubber gasket.

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