CN116379954B - Deformation condition monitoring device and tunnel main body monitoring system - Google Patents
Deformation condition monitoring device and tunnel main body monitoring system Download PDFInfo
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- CN116379954B CN116379954B CN202310653226.0A CN202310653226A CN116379954B CN 116379954 B CN116379954 B CN 116379954B CN 202310653226 A CN202310653226 A CN 202310653226A CN 116379954 B CN116379954 B CN 116379954B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 238000012806 monitoring device Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000012545 processing Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000013011 mating Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
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- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention relates to the technical field of deformation monitoring, in particular to a deformation condition monitoring device and a tunnel main body monitoring system. The laser transmitter is used for being installed on the exposed section of the anchor rod. The laser receiver is disposed at a projection point of the laser light emitted from the laser emitter after being reflected by the reflecting plate, and enables the laser receiver to receive the laser light signal. The laser transmitter and the laser receiver are both in signal connection with the controller. The controller is used for starting the laser transmitters one by one to determine the corresponding relation between the laser transmitters and the laser receivers. The controller is also used for presetting detection interval time, controlling the laser transmitter and the laser receiver to be started every interval detection interval time, and alarming and prompting the serial number of the laser receiver which can not receive the laser signal and the serial number of the laser transmitter corresponding to the serial number. The sensitivity of the method for detecting the micro deformation is greatly improved, and the method is low in cost and convenient to implement.
Description
Technical Field
The invention relates to the technical field of deformation monitoring, in particular to a deformation condition monitoring device and a tunnel main body monitoring system.
Background
The traditional deformation monitoring technology has low sensitivity to detecting the micro deformation, can not warn the micro deformation in time, has obvious limitation, and can not meet the use requirement for more comprehensively monitoring the overall change rule and the safety.
In view of this, the present application is specifically proposed.
Disclosure of Invention
A first object of the present invention is to provide a deformation condition monitoring device, which has greatly improved sensitivity for detecting micro deformation, and is low in cost and easy to implement.
A second object of the present invention is to provide a tunnel body monitoring system, which has greatly improved sensitivity for detecting micro deformation, and is low in cost and easy to implement.
Embodiments of the present invention are implemented as follows:
a deformation condition monitoring device, comprising: a controller, a laser transmitter, a reflecting plate and a laser receiver. The laser transmitters and the laser receivers are multiple and are respectively numbered and distinguished.
The laser transmitter is used for installing in the exposed section of stock, reflecting plate fixed mounting, and laser transmitter all sets up towards the reflecting plate. The laser receiver is disposed at a projection point of the laser light emitted from the laser emitter after being reflected by the reflecting plate, and enables the laser receiver to receive the laser light signal. The laser transmitters and the laser receivers are arranged in a one-to-one correspondence mode.
The laser transmitter and the laser receiver are both connected with a controller in a signal mode, and the controller stores the serial number data of each laser transmitter and each laser receiver. After the arrangement of the laser transmitters and the laser receivers is finished, the controller is used for starting the laser transmitters one by one so as to determine the corresponding relation between the laser transmitters and the laser receivers and save the corresponding relation.
The controller is also used for presetting detection interval time, controlling the laser transmitter and the laser receiver to be started every interval detection interval time, and alarming and prompting the serial number of the laser receiver which can not receive the laser signal and the serial number of the laser transmitter corresponding to the serial number.
Further, the laser transmitter includes: the device comprises a mounting seat, a universal adjusting mechanism and a laser emitting assembly. The mount pad has the connecting portion that is used for with the exposed section detachable connection of stock, and laser emission subassembly passes through everything adjustment mechanism and connects in the mount pad.
Further, the universal adjusting mechanism includes: the device comprises a first arc-shaped rail, a second arc-shaped rail, a motion seat and a processing module.
Both ends of the first arc-shaped rail and both ends of the second arc-shaped rail are hinged to the mounting seat, the rotation axis of the first arc-shaped rail passes through the circle center of the corresponding arc, and the rotation axis of the second arc-shaped rail also passes through the circle center of the corresponding arc. The plane of the arc corresponding to the first arc-shaped rail is perpendicular to the plane of the arc corresponding to the second arc-shaped rail, and the circle center of the arc corresponding to the first arc-shaped rail coincides with the circle center of the arc corresponding to the second arc-shaped rail. The radius of the corresponding arc of the second arc-shaped rail is larger than that of the corresponding arc of the first arc-shaped rail.
The motion seat is matched with the first arc-shaped rail and driven by the first driver to move along the first arc-shaped rail, and the motion seat is simultaneously matched with the second arc-shaped rail and driven by the second driver to move along the second arc-shaped rail. The first driver and the second driver are both in signal connection with the processing module.
The laser emission assembly is connected to the motion seat, and is provided with a horizontal detection module which is in signal connection with the processing module. When the laser emitting assembly is in a non-horizontal state, the processing module controls the first driver and the second driver to drive the motion seat so as to adjust the laser emitting assembly to be horizontal.
Further, the level detection module includes: the device comprises a shell, a third arc-shaped rail, a fourth arc-shaped rail, a sliding seat, a weight piece, a conductive needle, a first wire and a second wire.
The shell is fixedly arranged on the laser emission component, the shell is in a spherical shell shape, and the straight line of the laser emission direction of the laser emission component passes through the sphere center of the shell. The third arc-shaped rail and the fourth arc-shaped rail are both arranged in the shell.
Both ends of the third arc-shaped rail and both ends of the fourth arc-shaped rail are hinged to the inner wall of the shell, the rotation axis of the third arc-shaped rail passes through the circle center of the corresponding arc, and the rotation axis of the fourth arc-shaped rail also passes through the circle center of the corresponding arc. The plane of the arc corresponding to the third arc-shaped rail is perpendicular to the plane of the arc corresponding to the fourth arc-shaped rail, and the circle center of the arc corresponding to the third arc-shaped rail and the circle center of the arc corresponding to the fourth arc-shaped rail are coincident with the sphere center of the shell. The radius of the corresponding arc of the fourth arc-shaped rail is larger than that of the corresponding arc of the third arc-shaped rail.
The sliding seat is slidably matched with the third arc-shaped rail, and simultaneously is slidably matched with the fourth arc-shaped rail. The counterweight is fixedly connected to the bottom of the sliding seat, the conductive needle is fixedly connected to the top of the sliding seat, and the central axes of the counterweight and the conductive needle are overlapped. A gap is reserved between the weight piece and the inner wall of the shell.
The upper portion of shell is made by electrically conductive material, and the pointed end of electrically conductive needle is laminated and electric conduction with the inner wall of the upper portion of shell.
The first wire is electrically connected with the conductive needle, the second wire is electrically connected with the shell, the connecting point of the second wire and the shell is positioned at the top point of the shell, and the connecting line between the connecting point and the spherical center of the shell is perpendicular to the laser emission direction of the laser emission component.
The first wire and the second wire are connected into the detection loop, and when the processing module detects that the resistance on the loop is at a minimum value, the laser emitting assembly is regulated to be horizontal.
Further, the second wire is electrically connected with the shell through a conductive column, and the axial lead of the conductive column passes through the spherical center of the shell.
The conductive portion of the housing is formed by coiling a resistance wire. The winding starting point of the resistance wire is a conductive column and is formed by spirally winding along the surface of a spherical cover, the resistance wire is of a single-layer structure, the resistance wires of adjacent rings are mutually attached, insulation treatment is performed between the resistance wires of the adjacent rings, and the inner side of the resistance wire is exposed.
Further, the tip end of the conductive needle is provided with a matching cavity, and the matching cavity extends along the axial direction of the conductive needle and is coaxially arranged with the conductive needle. The needle body is slidably accommodated in the matching cavity, the diameter of the needle body is matched with the inner diameter of the matching cavity, and an elastic piece is abutted between the needle body and the end wall of the inner end of the matching cavity. The needle body is made of conductive materials, and the conductive needle is attached to the inner wall of the upper portion of the shell through the needle body and is electrically conducted.
Further, the needle body comprises a conductive section and an insulating section which are coaxially arranged. The conductive segment is located on a side closer to the exterior of the mating cavity. The insulating section is provided with an axial blind hole, and the conductive section is fixedly connected with a matching rod matched with the axial blind hole.
Further, the laser receiver comprises a cylinder, a base, an air supply pipe and a laser receiving assembly.
The barrel is fixedly connected to the base and is perpendicular to the base, and a gap is reserved between the laser receiving assembly and the opening of the barrel when the laser receiving assembly is accommodated in the barrel. The diameter of the laser receiving component is smaller than the inner diameter of the cylinder and is coaxially arranged with the cylinder, the periphery of the laser receiving component is provided with air outlet holes, and the air outlet holes are axially arranged along the cylinder and uniformly distributed at intervals along the circumference of the cylinder. The air supply pipe is fixedly connected with the cylinder body and communicated with the air outlet hole.
A tunnel body monitoring system, comprising: anchor rod and above-mentioned deformation condition monitoring devices.
Further, the laser receiver is arranged on the ground.
The technical scheme of the embodiment of the invention has the beneficial effects that:
after the deformation condition monitoring device provided by the embodiment of the invention is installed for the first time, the laser receiver can receive the laser emitted by the laser emitter corresponding to the laser receiver. If structural deformation occurs, the posture of the anchor rod can be changed, so that the laser transmitter is caused to shift, the laser path emitted by the laser transmitter is reflected by the reflecting plate, the shifting degree is amplified, the reflection angle of laser is changed, the projection point of the laser finally deviates from the corresponding laser receiver, and the corresponding laser receiver cannot receive a laser signal.
In this way, the situation that the laser signal cannot be received indicates that the corresponding part is deformed in structure, and relevant personnel can be reminded to pay attention to and check.
In general, the deformation condition monitoring device provided by the embodiment of the invention has the advantages of greatly improved detection sensitivity to micro deformation, low cost and convenience in implementation. The tunnel main body monitoring system provided by the embodiment of the invention has the advantages that the detection sensitivity of the tunnel main body monitoring system to micro deformation is greatly improved, the cost is low, and the implementation is convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an overall schematic diagram of a deformation condition monitoring device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall structure of a laser transmitter of a deformation condition monitoring device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a horizontal detection module (in a horizontal state) of a laser transmitter of the deformation condition monitoring device according to the embodiment of the present invention;
fig. 4 is a schematic view of the structure of fig. 3 at the tip of the conductive needle
FIG. 5 is a schematic diagram of a coil of resistance wire;
FIG. 6 is a schematic view of the structure of FIG. 5 at the beginning of the coil;
fig. 7 is a schematic diagram of the structure of the level detection module (in a non-level state);
FIG. 8 is a schematic view of the internal structure of the conductive pin;
fig. 9 is a schematic diagram of the internal structure of a laser receiver.
Reference numerals illustrate:
a deformation condition monitoring device 1000; a laser emitter 100; a mounting base 110; a universal adjustment mechanism 120; a first arcuate rail 121; a second arcuate rail 122; a motion base 123; a laser emitting assembly 130; a level detection module 200; a housing 210; a conductive post 211; a resistance wire 212; a third arcuate rail 220; a fourth arcuate rail 230; a slide seat 240; a weight 250; a conductive needle 260; a needle 261; conductive segment 261a; a mating lever 261b; an insulating segment 261c; an elastic member 262; a first wire 270; a second wire 280; a reflection plate 300; a laser receiver 400; a cylinder 410; a base 420; an air supply pipe 430; a laser receiving assembly 440; and an air outlet 450.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The terms "first," "second," "third," "fourth," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "parallel," "perpendicular," and the like, do not denote that the components are required to be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel than "perpendicular" and does not mean that the structures must be perfectly parallel, but may be slightly tilted.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 9, the present embodiment provides a deformation condition monitoring apparatus 1000, where the deformation condition monitoring apparatus 1000 includes: a controller (not shown), a laser emitter 100, a reflecting plate 300, and a laser receiver 400. The laser transmitter 100 and the laser receiver 400 are multiple, and the laser transmitter 100 and the laser receiver 400 are numbered respectively to facilitate distinguishing between the laser transmitter 100 and the laser receiver 400.
The laser transmitter 100 is used for installing in the exposed section of stock, and reflecting plate 300 fixed mounting, and laser transmitter 100 all sets up towards reflecting plate 300. The laser receiver 400 is disposed at a projection point of the laser light emitted from the laser emitter 100 after being reflected by the reflection plate 300, and the laser receiver 400 is enabled to receive a laser light signal when the laser receiver 400 is disposed. The laser emitters 100 and the laser receivers 400 are arranged in a one-to-one correspondence. After the laser receiver 400 is arranged, the positions of the reflecting plate 300, the laser transmitter 100 and the laser receiver 400 are not changed.
The laser transmitter 100 and the laser receiver 400 are both in signal connection with a controller that stores the numbering data of the respective laser transmitter 100 and laser receiver 400.
After the laser transmitter 100 and the laser receiver 400 are arranged for the first time, the controller is configured to turn on the laser transmitters 100 one by one, and determine the laser receivers 400 that can receive the laser light emitted by the laser transmitter 100 in the on state, so as to determine the correspondence between the laser transmitters 100 and the laser receivers 400 one by one and save the correspondence, that is, determine to which number of laser receiver 400 a laser transmitter 100 of a certain number corresponds.
The controller is further configured to preset a detection interval time, and the controller controls the laser transmitter 100 and the laser receiver 400 to be turned on every interval detection interval time, and alarms and prompts the number of the laser receiver 400 that cannot receive the laser signal and the number of the laser transmitter 100 corresponding to the number.
After the first installation, the laser receiver 400 can receive the laser light emitted by the laser emitter 100 corresponding to the first installation. If the structure is deformed, the posture of the anchor rod is changed, so that the laser transmitter 100 is shifted, the laser path emitted by the laser transmitter is reflected by the reflecting plate 300, the shifting degree is amplified, the reflection angle of the laser is changed, the final laser projection point deviates from the corresponding laser receiver 400, and the corresponding laser receiver 400 cannot receive the laser signal.
In this way, the situation that the laser signal cannot be received indicates that the corresponding part is deformed in structure, and relevant personnel can be reminded to pay attention to and check.
In general, the deformation condition monitoring device 1000 has greatly improved sensitivity for detecting micro deformation, and has low cost and convenient implementation. The tunnel main body monitoring system provided by the embodiment of the invention has the advantages that the detection sensitivity of the tunnel main body monitoring system to micro deformation is greatly improved, the cost is low, and the implementation is convenient.
In this embodiment, the laser transmitter 100 includes: mount 110, universal adjustment mechanism 120, and laser emitting assembly 130. The mount 110 has a connection for removable connection with the exposed section of the anchor, and the laser emitting assembly 130 is connected to the mount 110 by a universal adjustment mechanism 120.
Specifically, the universal adjustment mechanism 120 includes: a first arcuate rail 121, a second arcuate rail 122, a kinematic mount 123, and a processing module (not shown).
Both ends of the first arc-shaped rail 121 and both ends of the second arc-shaped rail 122 are hinged to the mounting seat 110, and the rotation axis of the first arc-shaped rail 121 passes through the circle center of the corresponding arc, and the rotation axis of the second arc-shaped rail 122 also passes through the circle center of the corresponding arc. The plane of the arc corresponding to the first arc-shaped rail 121 is perpendicular to the plane of the arc corresponding to the second arc-shaped rail 122, and the circle center of the arc corresponding to the first arc-shaped rail 121 coincides with the circle center of the arc corresponding to the second arc-shaped rail 122. The radius of the corresponding arc of the second arc-shaped rail 122 is greater than the radius of the corresponding arc of the first arc-shaped rail 121.
The moving seat 123 is engaged with the first arc-shaped rail 121 and is driven by a first driver (not shown) to move along the first arc-shaped rail 121, and the moving seat 123 is simultaneously engaged with the second arc-shaped rail 122 and is driven by a second driver (not shown) to move along the second arc-shaped rail 122. The first driver and the second driver are both in signal connection with the processing module and are controlled by the processing module.
The laser emission assembly 130 is connected to the motion seat 123, the laser emission assembly 130 is provided with a level detection module 200, and the level detection module 200 is in signal connection with the processing module. When the laser emitting assembly 130 is in a non-horizontal state, the processing module controls the first driver and the second driver to drive the moving base 123 to adjust the laser emitting assembly 130 to be horizontal.
Wherein the level detection module 200 includes: the housing 210, the third arcuate rail 220, the fourth arcuate rail 230, the sliding seat 240, the weight 250, the conductive pin 260, the first wire 270, and the second wire 280.
The housing 210 is fixedly mounted on the laser emitting assembly 130, the housing 210 is in a spherical shell shape, and a straight line of the laser emitting direction of the laser emitting assembly 130 passes through the spherical center of the housing 210. The third arcuate rail 220 and the fourth arcuate rail 230 are each disposed within the housing 210.
Both ends of the third arc-shaped rail 220 and both ends of the fourth arc-shaped rail 230 are hinged to the inner wall of the housing 210, the rotation axis of the third arc-shaped rail 220 passes through the center of the corresponding arc, and the rotation axis of the fourth arc-shaped rail 230 also passes through the center of the corresponding arc. The plane of the arc corresponding to the third arc-shaped rail 220 is perpendicular to the plane of the arc corresponding to the fourth arc-shaped rail 230, and the circle center of the arc corresponding to the third arc-shaped rail 220 and the circle center of the arc corresponding to the fourth arc-shaped rail 230 are coincident with the sphere center of the housing 210. The radius of the corresponding arc of the fourth arc-shaped rail 230 is greater than the radius of the corresponding arc of the third arc-shaped rail 220.
The sliding seat 240 is slidably engaged with the third arc rail 220, and the sliding seat 240 is simultaneously slidably engaged with the fourth arc rail 230. The weight 250 is fixedly connected to the bottom of the sliding seat 240, the conductive needle 260 is fixedly connected to the top of the sliding seat 240, and central axes of the weight 250 and the conductive needle 260 are coincident. A gap is left between the weight 250 and the inner wall of the housing 210.
The upper portion of the housing 210 is made of a conductive material, and the tips of the conductive pins 260 are attached to and electrically connected to the inner wall of the upper portion of the housing 210.
The first conductive wire 270 is electrically connected to the conductive pin 260, the second conductive wire 280 is electrically connected to the housing 210, as shown in fig. 3 and 4, the connection point between the second conductive wire 280 and the housing 210 is located at the top of the housing 210, and the connection line between the connection point and the center of sphere of the housing 210 is perpendicular to the laser emitting direction of the laser emitting assembly 130.
The first wire 270 and the second wire 280 are connected to a detection loop, and when the processing module detects that the resistance on the loop is at a minimum, it indicates that the laser emitting assembly 130 has been tuned to a level.
In this embodiment, the second conductive wire 280 is electrically connected to the housing 210 through the conductive post 211, and the axis of the conductive post 211 passes through the center of the housing 210.
The conductive portion of the housing 210 is coiled by a resistance wire 212. The winding start point of the resistance wire 212 is a conductive column 211 and is spirally wound along the surface of a spherical cover, the resistance wire 212 is in a single-layer structure, the resistance wires 212 of adjacent rings are mutually attached, insulation treatment is performed between the resistance wires 212 of the adjacent rings, and the inner sides of the resistance wires 212 are exposed.
With this design, when the laser emitting assembly 130 is not horizontal, the tip of the conductive pin 260 is offset from the conductive post 211, resulting in an increased resistance of the loop. At this time, the first and second drivers are controlled by the processing module so that the movement base 123 moves along the first and second arc rails 121 and 122. During the adjustment, the first and second drivers may be controlled separately. For example, the first driver is controlled to drive the motion seat 123 to move so that the resistance reaches the minimum value, and then the second driver is controlled to drive the motion seat 123 to move so that the resistance reaches the minimum value. In this way, the conductive pins 260 can be contacted with the conductive posts 211 again, so as to achieve the purpose of horizontal leveling.
In this way, after the laser transmitter 100 is mounted on the anchor rod by using the mounting seat 110, automatic leveling can be realized, and the adjustment difficulty of the laser transmitter 100 is reduced.
Further, a mating cavity is provided at the tip end of the conductive needle 260, and the mating cavity extends along the axial direction of the conductive needle 260 and is coaxially disposed with the conductive needle 260. The needle body 261 is slidably accommodated in the matching cavity, the diameter of the needle body 261 is matched with the inner diameter of the matching cavity, and an elastic piece 262 is abutted between the needle body 261 and the inner end wall of the matching cavity. The needle body 261 is made of a conductive material, and the conductive needle 260 is attached to and electrically connected with the inner wall of the upper portion of the housing 210 through the needle body 261.
The needle 261 includes a conductive segment 261a and an insulating segment 261c coaxially disposed. Conductive segment 261a is located on a side closer to the exterior of the mating cavity. The insulating segment 261c is provided with an axial blind hole, and the conductive segment 261a is fixedly connected with a matching rod 261b matched with the axial blind hole.
When the laser transmitter 100 is first installed and leveled, the leveling process is not performed, thereby accurately monitoring the posture change of the anchor rod.
Through this design, during use, the elastic member 262 can ensure that the conductive segment 261a of the needle 261 is always in contact with the resistance wire 212, ensuring a clear circuit. In use, conductive segment 261a is able to ensure conduction even if worn. As the number of uses increases, the conductive segment 261a wears out and shortens, and when the conductive segment 261a wears out, the insulating segment 261c contacts the resistance wire 212 and opens, and at this time, it is possible to indicate that the conductive segment 261a is exhausted.
Further, the laser receiver 400 includes a barrel 410, a base 420, an air delivery tube 430, and a laser receiving assembly 440.
Barrel 410 is fixedly connected to base 420 and is disposed perpendicular to base 420, and laser receiving assembly 440 is accommodated in barrel 410 and is spaced from the mouth of barrel 410. The diameter of the laser receiving assembly 440 is smaller than the inner diameter of the cylinder 410 and is arranged coaxially with the cylinder 410, the periphery of the laser receiving assembly 440 is provided with air outlet holes 450, and the air outlet holes 450 are arranged along the axial direction of the cylinder 410 and are uniformly distributed at intervals along the circumferential direction of the cylinder 410. Air feed tube 430 is fixedly connected to barrel 410 and communicates with air outlet 450.
The external air supply pipeline is communicated with the air supply pipe 430, so that the cylinder 410 can blow air outwards, dust is prevented from entering the cylinder 410 to interfere the laser receiving assembly 440 to receive laser signals, air can be supplied to a construction site, air flow is promoted, and ventilation and drying of a construction site are facilitated.
The embodiment also provides a tunnel body monitoring system, which comprises: a bolt and the deformation condition monitoring apparatus 1000 described above. To facilitate the arrangement of the laser receiver 400, the laser receiver 400 may be disposed on the ground, and the reflective plate 300 may be disposed near the top of the tunnel, but is not limited thereto.
For tunnels with different lengths, one or more groups of tunnel main body monitoring systems can be selected for monitoring, and different parts of the tunnel can also be monitored by adopting one group of tunnel main body monitoring systems respectively.
In summary, the deformation condition monitoring device 1000 according to the embodiment of the present invention has greatly improved sensitivity for detecting micro deformation, low cost and convenient implementation. The tunnel main body monitoring system provided by the embodiment of the invention has the advantages that the detection sensitivity of the tunnel main body monitoring system to micro deformation is greatly improved, the cost is low, and the implementation is convenient.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A deformation condition monitoring device, comprising: the laser device comprises a controller, a laser emitter, a reflecting plate and a laser receiver; the laser transmitters and the laser receivers are multiple and are respectively numbered and distinguished;
the laser transmitters are arranged on the exposed section of the anchor rod, the reflecting plates are fixedly arranged, and the laser transmitters are all arranged towards the reflecting plates; the laser receiver is arranged at a projection point of the laser emitted by the laser emitter after being reflected by the reflecting plate, and can receive a laser signal; the laser transmitters and the laser receivers are arranged in one-to-one correspondence;
the laser transmitter and the laser receiver are both in signal connection with the controller, and the controller stores serial number data of the laser transmitter and the laser receiver; after the arrangement of the laser transmitters and the laser receivers is finished, the controller is used for starting the laser transmitters one by one so as to determine the corresponding relation between the laser transmitters and the laser receivers and save the corresponding relation;
the controller is also used for presetting detection interval time, controlling the laser transmitter and the laser receiver to be started every time the detection interval time, and alarming and prompting the serial number of the laser receiver which can not receive the laser signal and the serial number of the laser transmitter corresponding to the serial number;
the laser transmitter includes: the device comprises a mounting seat, a universal adjusting mechanism and a laser emission component; the mounting seat is provided with a connecting part which is used for being detachably connected with the exposed section of the anchor rod, and the laser emission component is connected with the mounting seat through the universal adjusting mechanism;
the universal adjustment mechanism includes: the device comprises a first arc-shaped rail, a second arc-shaped rail, a motion seat and a processing module;
both ends of the first arc-shaped rail and both ends of the second arc-shaped rail are hinged to the mounting seat, the rotation axis of the first arc-shaped rail passes through the circle center of the corresponding arc, and the rotation axis of the second arc-shaped rail also passes through the circle center of the corresponding arc; the plane of the arc corresponding to the first arc-shaped rail is perpendicular to the plane of the arc corresponding to the second arc-shaped rail, and the circle center of the arc corresponding to the first arc-shaped rail is overlapped with the circle center of the arc corresponding to the second arc-shaped rail; the radius of the corresponding arc of the second arc-shaped rail is larger than that of the corresponding arc of the first arc-shaped rail;
the moving seat is matched with the first arc-shaped rail and driven by a first driver to move along the first arc-shaped rail, and is simultaneously matched with the second arc-shaped rail and driven by a second driver to move along the second arc-shaped rail; the first driver and the second driver are both in signal connection with the processing module;
the laser emission assembly is connected to the motion seat and is provided with a horizontal detection module which is in signal connection with the processing module; when the laser emitting assembly is in a non-horizontal state, the processing module controls the first driver and the second driver to drive the motion seat so as to adjust the laser emitting assembly to be horizontal.
2. The deformation condition monitoring device according to claim 1, wherein the level detection module includes: the device comprises a shell, a third arc-shaped rail, a fourth arc-shaped rail, a sliding seat, a weight piece, a conductive needle, a first wire and a second wire;
the shell is fixedly arranged on the laser emission component, the shell is in a spherical shell shape, and a straight line of the laser emission direction of the laser emission component passes through the spherical center of the shell; the third arc-shaped rail and the fourth arc-shaped rail are both arranged in the shell;
both ends of the third arc-shaped rail and both ends of the fourth arc-shaped rail are hinged to the inner wall of the shell, the rotating axis of the third arc-shaped rail passes through the circle center of the corresponding arc, and the rotating axis of the fourth arc-shaped rail also passes through the circle center of the corresponding arc; the plane of the arc corresponding to the third arc-shaped rail is perpendicular to the plane of the arc corresponding to the fourth arc-shaped rail, and the circle center of the arc corresponding to the third arc-shaped rail and the circle center of the arc corresponding to the fourth arc-shaped rail are overlapped with the sphere center of the shell; the radius of the corresponding arc of the fourth arc-shaped rail is larger than that of the corresponding arc of the third arc-shaped rail;
the sliding seat is slidably matched with the third arc-shaped rail, and the sliding seat is simultaneously slidably matched with the fourth arc-shaped rail; the weight piece is fixedly connected to the bottom of the sliding seat, the conductive needle is fixedly connected to the top of the sliding seat, and central axes of the weight piece and the conductive needle are overlapped; a gap is reserved between the weight piece and the inner wall of the shell;
the upper part of the shell is made of conductive materials, and the tip of the conductive needle is attached to the inner wall of the upper part of the shell and is electrically conducted;
the first lead is electrically connected with the conductive needle, the second lead is electrically connected with the shell, the connection point of the second lead and the shell is positioned at the most top point of the shell, and the connection line between the connection point and the spherical center of the shell is perpendicular to the laser emission direction of the laser emission component;
the first wire and the second wire are connected into a detection loop, and when the processing module detects that the resistance on the detection loop is at a minimum value, the laser emitting assembly is regulated to be horizontal.
3. The deformation condition monitoring device according to claim 2, wherein the second wire is electrically connected to the housing through a conductive post, and an axis of the conductive post passes through a center of sphere of the housing;
the conductive part of the shell is formed by coiling a resistance wire; the winding start point of the resistance wire is the conductive column and is formed by spirally winding along the surface of a spherical cover, the resistance wire is of a single-layer structure, the resistance wires of adjacent rings are mutually attached, insulation treatment is carried out between the resistance wires of the adjacent rings, and the inner side of the resistance wire is exposed.
4. A deformation condition monitoring device according to claim 3, wherein a fitting cavity is provided at a tip end of the conductive needle, the fitting cavity extending in an axial direction of the conductive needle and being disposed coaxially with the conductive needle; the needle body is slidably accommodated in the matching cavity, the diameter of the needle body is matched with the inner diameter of the matching cavity, and an elastic piece is abutted between the needle body and the inner end wall of the matching cavity; the needle body is made of conductive materials, and the conductive needle is attached to and electrically connected with the inner wall of the upper portion of the shell through the needle body.
5. The deformation condition monitoring device according to claim 4, wherein the needle body includes a conductive section and an insulating section coaxially disposed; the conductive segment is positioned on one side which is closer to the outside of the matching cavity; the insulating section is provided with an axial blind hole, and the conductive section is fixedly connected with a matching rod matched with the axial blind hole.
6. The deformation condition monitoring device according to claim 1, wherein the laser receiver comprises a barrel, a base, an air supply pipe, and a laser receiving assembly;
the cylinder is fixedly connected to the base and is perpendicular to the base, the laser receiving component is accommodated in the cylinder, and a gap is reserved between the laser receiving component and the opening of the cylinder; the diameter of the laser receiving component is smaller than the inner diameter of the cylinder and is coaxially arranged with the cylinder, the periphery of the laser receiving component is provided with air outlet holes, and the air outlet holes are axially arranged along the cylinder and are uniformly distributed at intervals along the circumferential direction of the cylinder; the air supply pipe is fixedly connected with the cylinder body and communicated with the air outlet hole.
7. A tunnel body monitoring system, comprising: an anchor rod and a deformation condition monitoring device according to any one of claims 1 to 6.
8. The tunnel body monitoring system of claim 7 wherein the laser receiver is located at the ground.
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