CN219265550U

CN219265550U - Fiber bragg grating type anchor cable force transducer

Info

Publication number: CN219265550U
Application number: CN202223414335.7U
Authority: CN
Inventors: 蔡长辉; 邓桂林; 燕科委
Original assignee: Anhui Lanke Photoelectric Technology Co ltd
Current assignee: Anhui Lanke Photoelectric Technology Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-06-27
Anticipated expiration: 2032-12-20

Abstract

The utility model discloses a fiber bragg grating type anchor rope force transducer which comprises a device body, wherein the device body comprises a landslide, an inclined support, an I-shaped steel waist beam, a first steel backing plate, an anchor rope sensor, a second steel backing plate and an anchor head, wherein the inclined support is arranged at the right end of the landslide in an inclined manner, the I-shaped steel waist beam is arranged at the top of the inclined support, the first steel backing plate is arranged at the top of the I-shaped steel waist beam, the anchor rope sensor is arranged at the top of the first steel backing plate, and the second steel backing plate is arranged at the top of the anchor rope sensor; the anchor cable sensor comprises an elastic alloy metal cylinder, a protective shell, a sealing ring and an optical cable, wherein the protective shell is arranged outside the elastic alloy metal cylinder, the optical cable is stuck to the outer side of the elastic alloy metal cylinder, and the sealing ring is provided with a group of sealing rings which are symmetrically arranged at the upper end and the lower end of the elastic alloy metal cylinder respectively. The device can enable the anchor cable sensor to work for a long time in special environments such as inflammable and explosive environments, and the like, and has no loss of transmission signals and high data precision.

Description

Fiber bragg grating type anchor cable force transducer

Technical Field

The utility model relates to the technical field of optical fiber sensors, in particular to an optical fiber grating type anchor cable force transducer.

Background

In civil engineering, anchoring engineering is critical, particularly on steep slopes with strict deformation requirements and unstable engineering parts such as highways, railways and the like, anchor ropes are required to be used for anchoring, stability of the structure is improved, safety is improved, and at the moment, long-term real-time safety monitoring on stress conditions of the anchor ropes is required to be carried out by means of an anchor rope force measuring sensing device, so that safety accidents are prevented.

The existing optical fiber sensor device has the following defects:

the existing anchor cable force sensor generally measures the resistance of the sensor and calculates the force, but the principle is not suitable for working in flammable and explosive environments, can not work for a long time, and can not be operated in a long distance.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a fiber grating type anchor cable force transducer, which solves the problems that the existing anchor cable force transducer is generally in a mode of measuring the resistance of the transducer, and the like, so that the existing anchor cable force transducer is not suitable for working in flammable and explosive environments, the transmission distance of an electric signal is short, the signal is lost, and the measuring precision is poor.

(II) technical scheme

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the optical fiber grating type anchor rope force transducer comprises a device body, wherein the device body comprises a landslide, an inclined support, an I-shaped steel waist beam, a first steel base plate, an anchor rope sensor, a second steel base plate and an anchor head, the inclined support is arranged at the right end of the landslide in an inclined mode, the I-shaped steel waist beam is arranged at the top of the inclined support, the first steel base plate is arranged at the top of the I-shaped steel waist beam, the anchor rope sensor is arranged at the top of the first steel pad, the second steel base plate is arranged at the top of the anchor rope sensor, and the anchor head is arranged at the top of the second steel base plate;

preferably, the anchor cable sensor comprises an elastic alloy metal cylinder, a protective shell, a sealing ring and an optical cable, wherein the protective shell is arranged outside the elastic alloy metal cylinder, the optical cable is stuck to the outer side of the elastic alloy metal cylinder, the sealing ring is provided with a group of sealing rings which are symmetrically arranged at the upper end and the lower end of the elastic alloy metal cylinder respectively, vertical line connectors are arranged on the left side and the right side of the protective shell, and the optical cable is arranged in the vertical line connectors.

Preferably, an anchor hole is formed in the side face of the landslide, the anchor hole is of an inclined structure, and a steel strand is arranged in the anchor hole.

Preferably, the anchor cable sensor is in a cylindrical structure.

(III) beneficial effects

The utility model provides an optical fiber grating type anchor cable force transducer. The beneficial effects are as follows:

the fiber bragg grating type anchor cable force transducer is an intrinsically safe device, does not generate current or spark, can be deployed in flammable and explosive environments such as coal mines and the like, can remotely transmit optical signals, does not generate loss, is extremely high in calculation accuracy, small in size, convenient to install and the like, is capable of being subjected to micro deformation by sticking the fiber bragg grating on a transducer main body, and can be correspondingly changed in certain characteristics of optical fibers, so that the stress magnitude is calculated.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

fig. 2 is a schematic structural view of the cable sensor of the present utility model.

In the figure, 1, a device body; 2. landslide; 3. an inclined support; 4. i-shaped steel waist beam; 5. a first steel backing plate; 6. an anchor cable sensor; 7. a second steel backing plate; 8. an anchor head; 9. an elastic alloy metal cylinder; 10. a protective shell; 11. a seal ring; 12. a grating; 13. a vertical line joint; 14. an optical cable; 15. an anchor hole; 16. and (5) steel strand wires.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, the embodiment of the utility model provides a technical scheme: the fiber bragg grating type anchor rope force transducer comprises a device body 1, wherein the device body 1 comprises a landslide 2, an inclined support 3, an I-shaped steel waist beam 4, a first steel base plate 5, an anchor rope sensor 6, a second steel base plate 7 and an anchor head 8, the inclined support 3 is arranged at the right end of the landslide 2 in an inclined mode, the I-shaped steel waist beam 4 is arranged at the top of the inclined support 3, the first steel base plate 5 is arranged at the top of the I-shaped steel waist beam 4, the anchor rope sensor 6 is arranged at the top of the first steel spacer 5, the second steel base plate 7 is arranged at the top of the anchor rope sensor 6, and the anchor head 8 is arranged at the top of the second steel base plate 7;

the anchor cable sensor 6 comprises an elastic alloy metal cylinder 9, a protective shell 10, a sealing ring 11, a sealing ring 12 and an optical cable 12, wherein the protective shell 10 is arranged outside the elastic alloy metal cylinder 9, the optical cable 12 is stuck to the outer side of the elastic alloy metal cylinder 9, the sealing ring 11 is provided with a group of optical cables and is symmetrically arranged at the upper end and the lower end of the elastic alloy metal cylinder 9 respectively, vertical line connectors 13 are arranged on the left side and the right side of the protective shell 10, optical cables 14 are arranged in the vertical line connectors 13, an optical fiber grating 12 is stuck to the elastic alloy metal cylinder 9 on the main body of the anchor cable sensor 6, the sensor is subjected to micro deformation, certain characteristics of the optical fibers are correspondingly changed, and then the stress is calculated.

The anchor hole 15 has been seted up to landslide 2 side, anchor hole 15 is the slope form structure, be equipped with steel strand wires 16 in the anchor hole 15, anchor hole 15 is in order to be convenient for oblique support 3's installation, and steel strand wires 16 can improve stretch-proofing nature, further improves the stability of device body 1 installation.

The anchor cable sensor 6 is of a cylindrical structure, and the anchor cable sensor 6 is of a cylindrical structure, so that the anchor cable sensor 6 is more sensitive to pressure, the accuracy of data is improved, the damage resistance of the anchor cable sensor 6 can be improved, and the stability of the internal components of the anchor cable sensor 6 is further improved.

Working principle: during operation, the fiber bragg grating 12 is adhered to the high-performance elastic alloy metal cylinder 9, when the elastic alloy metal cylinder 9 receives axial force, the elastic alloy metal cylinder 9 generates micro deformation, the grating 12 adhered to the elastic alloy metal cylinder 9 also deforms, so that certain characteristics of the grating 12 change, the stress of the elastic alloy metal cylinder 9 is calculated through external demodulation equipment, a worker can know the stress as soon as possible to make safety judgment, and the wire harness is convenient and fast to install due to simple structure. The optical signal is transmitted in the optical fiber with little loss, so the measurement accuracy is very high.

The utility model relates to a device body, in particular to a device body; 2. landslide; 3. an inclined support; 4. i-shaped steel waist beam; 5. a first steel backing plate; 6. an anchor cable sensor; 7. a second steel backing plate; 8. an anchor head; 9. an elastic alloy metal cylinder; 10. a protective shell; 11. a seal ring; 12. a grating; 13. a vertical line joint; 14. an optical cable; 15. an anchor hole; 16. the utility model solves the problems that the existing anchor cable force sensor is generally in a mode of measuring the resistance of the sensor and the like, thus being not suitable for working in flammable and explosive environments, the electric signal transmission distance is short, the signal is lost, and the measuring precision is poor.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a fiber bragg grating formula anchor rope force transducer which characterized in that: the device comprises a device body (1), wherein the device body (1) comprises a landslide (2), an inclined support (3), an I-shaped steel waist beam (4), a first steel base plate (5), an anchor rope sensor (6), a second steel base plate (7) and an anchor head (8), the inclined support (3) is arranged at the right end of the landslide (2) in an inclined mode, the I-shaped steel waist beam (4) is arranged at the top of the inclined support (3), the first steel base plate (5) is arranged at the top of the I-shaped steel waist beam (4), the anchor rope sensor (6) is arranged at the top of the first steel base plate (5), the second steel base plate (7) is arranged at the top of the anchor rope sensor (6), and the anchor head (8) is arranged at the top of the second steel base plate (7);

the anchor cable sensor (6) comprises an elastic alloy metal cylinder (9), a protective shell (10), a sealing ring (11), a sealing ring (12) and an optical cable (12), wherein the protective shell (10) is arranged outside the elastic alloy metal cylinder (9), the optical cable (12) is stuck to the outer side of the elastic alloy metal cylinder (9), the sealing ring (11) is provided with a group of symmetrical mode and is respectively arranged at the upper end and the lower end of the elastic alloy metal cylinder (9), vertical line connectors (13) are respectively arranged on the left side and the right side of the protective shell (10), and optical cables (14) are arranged in the vertical line connectors (13).

2. The fiber bragg grating type anchor line load cell according to claim 1, wherein: an anchor hole (15) is formed in the side face of the landslide (2), the anchor hole (15) is of an inclined structure, and a steel strand (16) is arranged in the anchor hole (15).

3. The fiber bragg grating type anchor line load cell according to claim 1, wherein: the anchor cable sensor (6) is of a cylindrical structure.