CN220170174U - Mining passive digital display bidirectional displacement optical fiber sensor - Google Patents
Mining passive digital display bidirectional displacement optical fiber sensor Download PDFInfo
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- CN220170174U CN220170174U CN202321334146.0U CN202321334146U CN220170174U CN 220170174 U CN220170174 U CN 220170174U CN 202321334146 U CN202321334146 U CN 202321334146U CN 220170174 U CN220170174 U CN 220170174U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 47
- 239000013307 optical fiber Substances 0.000 title claims abstract description 19
- 238000005065 mining Methods 0.000 title claims abstract description 17
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000004804 winding Methods 0.000 claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 description 10
- 239000011435 rock Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 241000935974 Paralichthys dentatus Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a mining passive digital display bidirectional displacement optical fiber sensor, wherein a display window is formed in the outer side surface of a sensor shell, a scale tape is arranged at one end in the sensor shell through a winding mechanism, a rolling mechanism is rotatably arranged at the other end in the sensor shell, one end of the scale tape is fixedly connected with the rolling mechanism along the length direction of the display window, one end of a steel wire rope is fixedly connected with the rolling mechanism, and a displacement remote display device is connected with the rolling mechanism. The sensor can display the deformation displacement of the mine tunnel under the condition of no power supply, is not affected by electromagnetic interference and is intrinsically safe; the displacement variable can be monitored in a positive and negative direction, the variable is visually displayed, calculation is not needed, and the measurement precision is high and the error is small; meanwhile, the problem that under the passive intrinsic safety condition, the displacement variable can be read on site and signals can be transmitted remotely is solved.
Description
Technical Field
The utility model relates to the technical field of sensor equipment, in particular to a mining passive digital display bidirectional displacement optical fiber sensor.
Background
Safety monitoring of the mine tunnel roof bottom plate and the surrounding rock is an important item for predicting mine disasters, mine roof collapse of the surrounding rock is one of oversized disasters of various mines, production safety of the mines is seriously threatened, and huge economic loss and casualties can be caused when the mine safety monitoring happens. In recent years, due to the continuous extension of a tunneling surface and the expansion of a mining range, mine production is advanced to a deep depth, roof collapse and collapse are increasingly serious, and prevention and control tasks are also increasingly difficult, so that mine roof disasters seriously threaten the life safety of mine miners.
The electronic automatic recording instrument adopting the strain gauge can only rely on original manual measurement and recording by using a graduated scale, is based on the monitoring of the resistance strain gauge in recent years, has zero drift, is influenced by environmental parameters such as humidity and needs to supply power to the electronic automatic recording instrument.
The defects of the follow-up monitoring of the top and bottom plates and surrounding rock by adopting fiber bragg grating sensing are that the follow-up monitoring can only be carried out remotely and cannot be read on site.
Disclosure of Invention
The utility model aims to provide a mining passive digital display bidirectional displacement optical fiber sensor.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a mining passive digital display bidirectional displacement fiber sensor, includes the sensor casing, still includes scale tape measure, winding mechanism, draws a roll mechanism, displacement remote display device and wire rope, a display window has been seted up to sensor casing outside surface, scale tape measure passes through winding mechanism and installs in the inside one end of sensor casing, draw a roll mechanism to rotate and install at the inside other end of sensor casing, scale tape measure one end is along display window length direction and draw a roll mechanism fixed connection, wire rope one end and draw a roll mechanism fixed connection, the wire rope other end runs through the sensor casing outside, and wire rope draws a roll mechanism to draw a scale tape measure extension, displacement remote display device is connected with drawing a roll mechanism, and displacement remote display device is used for converting the displacement of drawing a roll mechanism into required data.
Preferably, the winding mechanism comprises a tape wheel I, a torsion spring and a pre-tightening key, wherein the tape wheel I is rotatably arranged at one end inside the sensor shell, the torsion spring is arranged at one end of the tape wheel I, the graduated tape is wound on the surface of the tape wheel I, the pre-tightening key is arranged at one end of the torsion spring, and the pre-tightening key is used for pre-tightening the torsion spring.
Preferably, the drawing and winding mechanism comprises a tape wheel II, a gear I and a winding rope wheel, wherein the tape wheel II is rotatably arranged at one end of the sensor shell, which is far away from the position of the tape wheel I, the gear I is fixedly arranged at one end of the tape wheel II, the winding rope wheel is fixedly connected with one end of the gear I through a pin shaft, one end of the steel wire rope is fixedly connected with the surface of the winding rope wheel, and one end of the graduated tape is fixedly connected with the surface of the tape wheel II.
Preferably, the displacement remote display device comprises a gear II, a gear III, a spring piece and an optical fiber grating, wherein the gear II and the gear III are rotatably arranged inside a sensor shell, the gear II and the gear III are meshed with each other, the gear II is meshed with the gear I, a screw rod is arranged in the middle of the gear III in a threaded fit manner, the spring piece is fixedly arranged inside the sensor shell, the optical fiber grating is fixedly adhered to the inner side of one end of the spring piece, and the optical fiber grating deforms along with the deformation of the spring piece.
Preferably, the fiber grating is connected with an external host through a transmission optical cable
Preferably, idler wheels are fixedly arranged at the two ends of the display window in the sensor shell, and the idler wheels are in contact with the elongated section of the scale tape.
Preferably, an oil cavity connector is fixedly arranged on the outer side surface of the sensor shell, and the steel wire rope extends out of the sensor shell through the oil cavity connector.
Compared with the prior art, the utility model has the advantages that:
the sensor realizes real-time on-line monitoring of physical information of monitored displacement, has an early warning function on disasters, provides technical support for guaranteeing life and property safety, can display deformation displacement of a mine tunnel under the condition of no power supply, and is not subject to electromagnetic interference and intrinsic safety;
the displacement variable can be monitored in a positive and negative direction, the variable is visually displayed, calculation is not needed, and the measurement precision is high and the error is small;
meanwhile, the problems that under the passive intrinsic safety condition, the displacement variable can be read on site and signals can be transmitted remotely are solved;
the pre-tightening steel wire rope is flexible in outlet, can be used for measuring and monitoring displacement under various states (such as roadway top and bottom plates, two sides, roadway cross sections and the like), and has high universality.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a mining passive digital display bi-directional displacement fiber sensor of the present utility model;
FIG. 2 is a side view of a mining passive digital display bi-directional displacement fiber sensor of the present utility model;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is a cross-sectional view of FIG. 2;
FIG. 5 is a schematic diagram showing the application of the sensor of the utility model to roadway two-side convergence monitoring.
In the figure: the sensor comprises a sensor shell, a display window 11, a scale tape 2, a winding mechanism 3, a tape measure wheel I31, a torsion spring 32, a pre-tightening key 33, a winding mechanism 4, a tape measure wheel II 41, a gear I42, a rope winding wheel 43, a displacement 5 remote display device, a gear II 51, a gear III52, a screw rod 53, a spring leaf 54, an oil cavity joint 6, a steel wire rope 7, an idler pulley 8 and a transmission optical cable 9.
Description of the embodiments
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1-4, the utility model provides a mining passive digital display bidirectional displacement optical fiber sensor, which comprises a sensor shell 1, a scale tape 2, a winding mechanism 3, a drawing and rolling mechanism 4, a displacement remote display device 5 and a steel wire rope 7, wherein a display window 11 is formed on the outer side surface of the sensor shell 1, the scale tape 2 is arranged at one end inside the sensor shell 1 through the winding mechanism 3, the winding mechanism 3 is used for winding the scale tape 2, the drawing and rolling mechanism 4 is rotatably arranged at the other end inside the sensor shell 1, one end of the scale tape 2 is fixedly connected with the drawing and rolling mechanism 4 along the length direction of the display window 11, one end of the steel wire rope 7 is fixedly connected with the drawing and rolling mechanism 4, the other end of the steel wire rope 7 penetrates through the outside of the sensor shell 1, the steel wire rope 7 pulls the scale tape 2 to stretch through the drawing and rolling mechanism 4, so that the displacement is displayed, the displacement remote display device 5 is connected with the drawing and rolling mechanism 4, and the displacement remote display device 5 is used for converting the displacement of the drawing and rolling mechanism 4 into signal data, and realizing the remote transmission of displacement data of optical fibers.
In this embodiment, the winding mechanism 3 includes a tape wheel i 31, a torsion spring 33 and a pre-tightening key 33, the tape wheel i 31 is rotatably mounted at one end inside the sensor housing 1, the torsion spring 32 is mounted at one end of the tape wheel i 31, the scale tape 2 is wound on the surface of the tape wheel i 31, the pre-tightening key 33 is mounted at one end of the torsion spring 33, the pre-tightening key 33 is used for pre-tightening the torsion spring 33, the working principle is that in the prior art, the pre-tightening key is similar to a clock spring, and the pre-tightening key 33 is similar to a pre-tightening turntable of a clock.
In this embodiment, draw a book mechanism 4 and include tape measure wheel II, gear I42 and receipts rope sheave 43, tape measure wheel II rotates the one end of installing the position of keeping away from tape measure wheel I31 in sensor housing 1 inside, gear I42 fixed mounting is in tape measure wheel II one end, receipts rope sheave 43 passes through round pin axle and gear I42 one end fixed connection, wire rope 7 one end and receipts rope sheave 43 fixed surface connection, scale tape measure 2 one end and tape measure wheel II fixed surface connection.
In this embodiment, the displacement remote display device 5 includes gear ii 51, gear III52, spring leaf 54 and fiber bragg grating, gear ii 51 and 52 gear III are all rotated and are installed inside sensor housing 1, gear ii 51 and 52 gear III intermesh, gear ii 51 and gear i 42 meshing, screw 53 is installed to gear III52 middle part screw thread fit, spring leaf 53 fixed mounting is inside sensor housing 1, fiber bragg grating fixed mounting is inboard at spring leaf 53 one end, fiber bragg grating passes through spring leaf 53 elasticity effect and screw 53 one end elastic contact.
In this embodiment, the fiber bragg grating is electrically connected to an external host through the transmission optical cable 9, so that a displacement variable can be displayed in real time.
In this embodiment, the idler wheels 8 are fixedly installed at two ends of the display window 11 in the sensor housing 1, the idler wheels 8 are in contact with the elongated section of the scale tape 2, and the 2 idler wheels 8 are used for enabling the elongated section of the scale tape 2 to be closer to the display window 11, so that the scale tape is easy to read on site and can be accurately displayed on the digital display window 11.
In this embodiment, an oil cavity joint 6 is fixedly installed on an outer side surface of the sensor housing 1, and the steel wire rope 7 extends out of the sensor housing 1 through the oil cavity joint 6.
The specific operation steps and the working principle are as follows:
referring to fig. 5, in the process of monitoring the convergence of two sides of a roadway, the steps are as follows: (1) when monitoring displacement variables of opposite points, the sensor is fixed at one point through the mounting bracket, the scale tape 2 is respectively wound on 2 tape wheels, the scale in the middle of the scale tape 2 is adjusted at the middle pointer position, the torsion spring 32 is preloaded through the preload key 33 arranged on the tape wheel 2, the wire rope 7 is wound on the rope winding wheel 43 for about 600mm to be fixed, and the wire rope 7 with preload is connected with the other point through the fluke.
(2) When the corresponding two points are displaced relatively, the steel wire rope 7 with pretightening force is pulled out or retracted, the rope collecting wheel 43 and the tape wheel I31 rotate synchronously, the rotation of the tape wheel I31 pulls the graduated tape 2, the graduation of the graduated tape 2 displays the displacement variable at the position of the display window 11, and passive on-site real-time digital display is realized;
(3) meanwhile, the rope winding wheel 43 drives the gear II 51 and the gear III52 to rotate, the lead screw 53 rotates and moves, the lead screw 53 moves to deform the spring piece 54, the fiber bragg grating adhered to the spring piece 54 collects deformation of the fiber bragg grating and remotely transmits the deformation to a host, and the numerical value of a real-time displacement variable is obtained after photoelectric conversion, so that passive signal remote transmission is realized.
Although the embodiments of the present utility model have been described with reference to the accompanying drawings, the patentees may make various modifications or alterations within the scope of the appended claims, and are intended to be within the scope of the utility model as described in the claims.
Claims (7)
1. The utility model provides a mining passive digital display two-way displacement fiber sensor, includes sensor housing, its characterized in that: the sensor comprises a sensor shell, and is characterized by further comprising a scale tape, a winding mechanism, a pulling and rolling mechanism, a displacement remote display device and a steel wire rope, wherein a display window is formed in the outer side surface of the sensor shell, the scale tape is installed at one end inside the sensor shell through the winding mechanism, the pulling and rolling mechanism is rotatably installed at the other end inside the sensor shell, one end of the scale tape is fixedly connected with the pulling and rolling mechanism along the length direction of the display window, one end of the steel wire rope is fixedly connected with the pulling and rolling mechanism, the other end of the steel wire rope penetrates the outside of the sensor shell, the steel wire rope pulls the scale tape to stretch through the pulling and rolling mechanism, the displacement remote display device is connected with the pulling and rolling mechanism, and the displacement remote display device is used for converting the displacement of the pulling and rolling mechanism into required data.
2. The mining passive digital display bidirectional displacement optical fiber sensor according to claim 1, wherein: the winding mechanism comprises a tape wheel I, a torsion spring and a pre-tightening key, wherein the tape wheel I is rotatably arranged at one end inside a sensor shell, the torsion spring is arranged at one end of the tape wheel I, a graduated tape is wound on the surface of the tape wheel I, the pre-tightening key is arranged at one end of the torsion spring, and the pre-tightening key is used for pre-tightening the torsion spring.
3. The mining passive digital display bidirectional displacement optical fiber sensor according to claim 1, wherein: the drawing and winding mechanism comprises a tape wheel II, a gear I and a rope winding wheel, wherein the tape wheel II is rotatably arranged at one end of the sensor shell, which is far away from the position of the tape wheel I, the gear I is fixedly arranged at one end of the tape wheel II, the rope winding wheel is fixedly connected with one end of the gear I through a pin shaft, one end of the steel wire rope is fixedly connected with the surface of the rope winding wheel, and one end of the graduated tape is fixedly connected with the surface of the tape wheel II.
4. A mining passive digital display bi-directional displacement optical fiber sensor according to claim 3, wherein: the displacement remote display device comprises a gear II, a gear III, a spring piece and an optical fiber grating, wherein the gear II and the gear III are rotatably installed inside a sensor shell, the gear II and the gear III are meshed with each other, the gear II is meshed with the gear I, a screw rod is installed in the middle of the gear III in a threaded fit mode, the spring piece is fixedly installed inside the sensor shell, the optical fiber grating is fixed on the inner side of one end of the spring piece in a pasting mode, and the optical fiber grating deforms along with the deformation of the spring piece.
5. The mining passive digital display bidirectional displacement optical fiber sensor according to claim 4, wherein: the fiber bragg grating is connected with an external host optical cable through a transmission optical cable.
6. The mining passive digital display bidirectional displacement optical fiber sensor according to claim 1, wherein: and idler wheels are fixedly arranged in the sensor shell at the two ends of the display window, and the idler wheels are in contact with the elongated section of the scale tape.
7. The mining passive digital display bidirectional displacement optical fiber sensor according to claim 1, wherein: an oil cavity connector is fixedly arranged on the outer side surface of the sensor shell, and the steel wire rope extends out of the sensor shell through the oil cavity connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321334146.0U CN220170174U (en) | 2023-05-30 | 2023-05-30 | Mining passive digital display bidirectional displacement optical fiber sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321334146.0U CN220170174U (en) | 2023-05-30 | 2023-05-30 | Mining passive digital display bidirectional displacement optical fiber sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220170174U true CN220170174U (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321334146.0U Active CN220170174U (en) | 2023-05-30 | 2023-05-30 | Mining passive digital display bidirectional displacement optical fiber sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220170174U (en) |
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2023
- 2023-05-30 CN CN202321334146.0U patent/CN220170174U/en active Active
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