CN110658188A - Concrete carbonization depth detector and detection method - Google Patents
Concrete carbonization depth detector and detection method Download PDFInfo
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- CN110658188A CN110658188A CN201910978691.5A CN201910978691A CN110658188A CN 110658188 A CN110658188 A CN 110658188A CN 201910978691 A CN201910978691 A CN 201910978691A CN 110658188 A CN110658188 A CN 110658188A
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- 238000001514 detection method Methods 0.000 title claims abstract description 58
- 238000003763 carbonization Methods 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 80
- 238000006073 displacement reaction Methods 0.000 claims abstract description 42
- 238000005507 spraying Methods 0.000 claims abstract description 36
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000007664 blowing Methods 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 23
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims description 26
- 238000005286 illumination Methods 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 2
- 230000006870 function Effects 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 5
- 238000001802 infusion Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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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
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- General Health & Medical Sciences (AREA)
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Abstract
The invention provides a concrete carbonization depth detector and a detection method, wherein the concrete carbonization depth detector comprises a shell, a measuring device, a liquid spraying device and an air blowing device, wherein the shell is provided with an air inlet, an air outlet and a display unit, the plane part of the shell is provided with a detection port, and the diameter of the detection port is larger than that of a hole to be detected on the surface of a concrete detection area; the measuring device comprises an annular lighting light source, a vision sensor, a PLC (programmable logic controller), a laser displacement sensor, a rotation driving mechanism, a radial sliding driving mechanism, a data processor, a guide support and a fixed support, the liquid spraying device comprises a reagent bottle, a low-voltage electric water pump, a liquid conveying pipe and a spray head, and the air blowing device comprises a motor and an impeller. The concrete carbonization depth detector integrates the functions of air blowing, liquid spraying and measurement, and is convenient to carry and use; the automatic measurement and the intelligent measurement of the carbonization depth of the laser displacement sensor are adopted, so that the measurement precision is greatly improved.
Description
Technical Field
The invention belongs to the technical field of civil engineering concrete detection, and particularly relates to a structure improvement of a concrete carbonization depth detector and an improvement of a detection method.
Background
The carbonization depth is an important index of the durability of concrete, when measuring the carbonization depth value of the concrete, a drilling method is generally adopted, namely, a hole with the caliber of about 15mm and the depth of more than 10mm is drilled on the surface of a measuring area, the shape of the hole is approximately conical, the inner diameter of the hole is gradually reduced from the opening to the bottom of the hole, then powder and scraps in the hole are removed by an air blowing device, a phenolphthalein alcohol reagent with the concentration of 1% is sprayed on the edge of the inner wall of the hole, when the boundary between carbonized and non-carbonized is clear, a depth measuring tool is used for measuring the vertical distance from the interface between the carbonized concrete and the non-carbonized concrete to the surface of the concrete for a plurality of times, the reading is accurate to 0.5mm, and the average value is taken as the carbonization.
However, the existing measuring device, the air blowing device and the liquid spraying device are usually required to be taken out separately during operation, the scraps and the powder in the holes are generally removed by blowing gas by using an ear blowing ball, and then the spray bottle containing a phenolphthalein alcohol reagent with the concentration of 1% is taken to spray liquid on the edge of the inner wall of the hole, each part is separated, the parts are required to be taken out respectively during operation and used respectively, and the parts are easy to lose during use and storage, so that the operation is inconvenient; in addition, at present, a mechanical graduated scale is adopted for measurement, the average value is obtained after successive measurement, the measurement precision is not high, and the error of a measurement result is large.
Disclosure of Invention
The invention provides a concrete carbonization depth detector and a detection method, wherein the detector integrates air blowing, liquid spraying and measurement, is convenient to carry, and the detection method using the detector has high measurement efficiency and measurement precision.
In order to achieve the technical purpose, the concrete carbonization depth detector provided by the invention adopts the following technical scheme: a concrete carbonization depth detector is characterized by comprising:
the device comprises a shell, a measuring device, a liquid spraying device and a blowing device which are integrated in the shell, a power supply arranged in the shell, a power switch arranged on the shell and connected with the power supply, a first control switch arranged on the shell and used for controlling the measuring device to work, and a second control switch arranged on the shell and used for controlling the liquid spraying device and the blowing device to work simultaneously, wherein the first control switch and the second control switch are both connected with the power switch;
the shell is provided with an air inlet, an air outlet and a display unit, and is provided with a plane part for being attached to the surface of the concrete measuring area, the plane part is provided with a circular detection port, and the diameter of the detection port is larger than that of a hole to be detected on the surface of the concrete measuring area;
the measuring device comprises an annular lighting light source, a vision sensor, a PLC (programmable logic controller), a laser displacement sensor, a rotation driving mechanism, a radial sliding driving mechanism, a data processor, a guide support and a fixed support, wherein the vision sensor, the PLC, the laser displacement sensor and the data processor are in communication connection, and when the plane part is attached to the surface of the concrete measuring area, the detection end of the laser displacement sensor is flush with the hole to be measured on the surface of the concrete measuring area;
the fixed support is fixedly arranged in the shell, and the rotation driving mechanism, the PLC and the data processor are arranged on the fixed support;
the rotary driving mechanism comprises a first motor, a rotating shaft and a supporting plate, wherein the first motor is vertically arranged, the rotating shaft is coaxially and fixedly connected with an output shaft of the first motor, the supporting plate is fixedly connected with the rotating shaft and is provided with a horizontal supporting surface, the rotating shaft is coaxial with the detection port and extends into the detection port, the vision sensor and the annular illumination light source are fixed on the free end of the rotating shaft, the vision sensor is positioned in the center of the detection port, and the annular illumination light source is concentric with the detection port and is positioned on the periphery of the vision sensor;
the guide support is fixedly arranged on the circumferential side wall of the annular illumination light source and is provided with a guide hole extending along the radial direction of the detection port, and the laser displacement sensor is arranged on the guide support and can slide along the radial direction of the guide hole;
the radial sliding driving mechanism is used for driving the laser displacement sensor to slide along the guide hole in the radial direction and comprises a second motor, a circular rotary table, a connecting rod and a fixed guide rod, wherein the second motor is transversely arranged, the circular rotary table is vertically arranged, the second motor is fixedly arranged on the supporting surface of the supporting plate, the circular rotary table is eccentrically arranged on an output shaft of the second motor, an annular guide rail concentric with the circular rotary table is formed on the circular rotary table, one end of the connecting rod is fixedly connected with the laser displacement sensor, the other end of the connecting rod is fixedly connected with a first sliding block, a second sliding block is fixedly arranged on the first sliding block, the first sliding block is in sliding fit with the annular guide rail, the fixed guide rod is fixedly arranged, and the second sliding block is in sliding fit with the fixed guide rod;
the liquid spraying device comprises a reagent bottle filled with a phenolphthalein alcohol reagent, a low-pressure electric water pump, a liquid conveying pipe and a spray head, wherein the reagent bottle and the low-pressure electric water pump are fixedly arranged in the shell, the liquid inlet end of the liquid conveying pipe extends into the reagent bottle, the liquid outlet end of the liquid conveying pipe is positioned outside the reagent bottle and connected with the liquid inlet end of the low-pressure electric water pump, the liquid outlet end of the low-pressure electric water pump is connected with the spray head through a pipeline, and the spray head is fixedly arranged in the air outlet;
the blower device comprises a motor and an impeller driven by the motor to rotate, the motor is fixedly arranged in the shell, the air inlet is located on the air inlet side of the impeller, and the air outlet is located on the air outlet side of the impeller.
The length direction of the fixed guide rod is along the horizontal direction, the second sliding block is provided with a guide groove, the extending direction of the guide groove is parallel to the length direction of the fixed guide rod, the second sliding block is in sliding fit with the fixed guide rod through the guide groove of the second sliding block, the first sliding block is provided with a guide groove extending along the vertical direction, and the first sliding block is in sliding fit with the annular guide rail through the guide groove of the first sliding block.
The air outlet is formed on the plane part and is positioned on one side of the detection port.
And a partition board is fixedly arranged in the shell and used for separating the air blowing device from the measuring device.
The measuring device further comprises an auxiliary fixing support, the auxiliary fixing support is fixedly arranged in the shell and located above the fixing support, a through hole is formed in the auxiliary fixing support, the rotating shaft penetrates through the through hole, and the first motor is fixedly arranged on the fixing support and clamped between the auxiliary fixing support and the fixing support.
The measuring device further comprises a memory, the memory is connected with the data processor, a USB interface is arranged on the shell, the memory is further connected with the USB interface, and the power supply is connected with the USB interface.
The reagent bottle is provided with a liquid injection port, the liquid injection port is provided with a sealing bottle cap, and the sealing bottle cap is exposed out of the shell so as to open or close the liquid injection port from the outside of the shell.
A filter screen is arranged at the liquid inlet end of the infusion tube.
The invention also provides a detection method based on the concrete carbonization depth detector, which comprises the following steps:
1) electrifying a detector: turning on a power switch to switch on a power supply;
2) spraying liquid and removing ash of the holes to be detected on the surface of the concrete detection area: an air outlet on the detector shell faces the hole to be detected, a second control switch is turned on, a low-voltage electric water pump of the liquid spraying device starts to work, a phenolphthalein alcohol mixed reagent in the test liquid bottle is conveyed to a spray head through a liquid conveying pipe and a connecting pipeline between the low-voltage electric water pump and the spray head, and the phenolphthalein alcohol mixed reagent is sprayed into the hole to be detected through the spray head, so that the liquid is sprayed to the hole to be detected; when the low-voltage electric water pump starts to work, a motor of the air blowing device starts to work, the impeller rotates, and air flow sucked from the air inlet is blown out from the air outlet to remove dust from the hole to be detected;
3) stopping liquid spraying and ash removal: after the liquid spraying and dust removing work is finished, the second control switch is closed, and the liquid spraying device and the air blowing device stop working;
4) carrying out carbonization depth measurement on the holes to be measured on the surface of the concrete measuring area: observing the color change of concrete on the inner wall of the hole to be detected, attaching the plane part of the shell of the detector to the surface of the concrete measuring area after the inner wall of the hole to be detected is not carbonized and the concrete turns red, enabling a detection port on the shell to face the hole to be detected, and enabling the detection end of the laser displacement sensor to be flush with the hole to be detected on the surface of the concrete measuring area; the method comprises the steps that a first control switch is turned on, an annular lighting light source of a measuring device is turned on, a vision sensor works, the vision sensor scans a hole to be measured to obtain an annular boundary curve of carbonized concrete above the inner wall of the hole to be measured and non-carbonized concrete below the inner wall of the hole to be measured, the scanned annular boundary curve information is transmitted into a PLC (programmable logic controller), the PLC controls a first motor and a second motor to work, a laser displacement sensor is enabled to move for a circle along a curve track parallel to and the same as the annular boundary curve under the common driving action of a rotation driving mechanism and a radial sliding driving mechanism, the laser displacement sensor measures the depth of the annular boundary curve for a circle in the moving process, the measured depth value is transmitted to a data processor, and the data processor averages the measured depth value and displays the value on a display.
The maximum measuring range of the laser displacement sensor is 50mm, and the precision is 0.1 mm.
The invention has the following advantages and positive effects:
1. the concrete carbonization depth detector integrates the functions of air blowing, liquid spraying and measurement, is convenient to carry and use, simplifies the operation process and improves the detection efficiency;
2. the current commonly used pointer measuring method is abandoned, the laser displacement sensor is adopted to move for a circle along the track parallel to the concrete carbonization and non-carbonization annular boundary curve for measurement and the average value is taken, so that automatic measurement and intelligent measurement are realized, and the measurement precision is greatly improved.
Drawings
FIG. 1 is a schematic view of a front view perspective of the concrete carbonization depth detector of the present invention;
FIG. 2 is a schematic view of a back view perspective of the concrete carbonization depth detector of the present invention;
FIG. 3 is a schematic view of a perspective view of a bottom surface of the detector for concrete carbonation depth according to the present invention;
FIG. 4 is a structural diagram of the detector for concrete carbonization depth in a sectioning state according to the present invention;
FIG. 5 is a schematic view of an assembly structure of a rotation driving mechanism and a radial sliding driving mechanism of the measuring device of the concrete carbonization depth detector according to the present invention;
fig. 6 is a schematic view of an assembly structure of the circular turntable, the connecting rod, the fixed guide rod, the rotating shaft, the first slider and the second slider in the concrete carbonization depth detector of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 4, the concrete carbonization depth detector of the present embodiment includes a housing 100, a measuring device 200 integrated in the housing 100, a liquid spraying device 300 and a blowing device 400, a power supply 500 disposed in the housing 100, a power switch 600 disposed on the housing 100 and connected to the power supply 500, a first control switch disposed on the housing 100 for controlling the operation of the measuring device 200, and a second control switch disposed on the housing 100 for controlling the simultaneous operation of the liquid spraying device 300 and the blowing device 400, wherein both the first control switch and the second control switch are connected to the power switch 600;
the shell 100 is provided with an air inlet 110, an air outlet 120 and a display unit 130, the shell 100 is provided with a plane part 140 for being attached to the surface of the concrete measuring area, the plane part 140 is provided with a circular detecting port 150, and the diameter of the detecting port 150 is larger than that of the hole to be detected on the surface of the concrete measuring area, so that the hole to be detected can be completely covered by the detecting port;
the measuring device 200 comprises an annular illumination light source 210, a vision sensor 220, a PLC controller 230, a laser displacement sensor 240, a rotation driving mechanism 250, a radial sliding driving mechanism 260, a data processor 270, a guide bracket 280 and a fixed bracket 290, wherein the vision sensor 220, the PLC controller 230, the laser displacement sensor 240 and the data processor 270 are in communication connection with each other so as to realize data or signal transmission; when the plane part 140 of the shell 100 is attached to the surface of the concrete measuring area, the detection end of the laser displacement sensor 240 is flush with the hole of the hole to be detected on the surface of the concrete measuring area;
the fixing bracket 290 is fixedly arranged in the casing 100, and is used as a support bracket for the internal parts of the casing 100, for example, the rotation driving mechanism 250, the PLC controller 230 and the data processor 270 are arranged on the fixing bracket 290;
as shown in fig. 5 and 6, the rotation driving mechanism 250 includes a vertically disposed first motor 251, a rotating shaft 252 coaxially and fixedly connected to an output shaft of the first motor 251, and a supporting plate 253, where the supporting plate 253 is fixedly connected to the rotating shaft 252 and has a horizontal supporting surface, in this embodiment, the supporting plate 253 is a horizontal plate, an axis of the horizontal plate coincides with the rotating shaft 252, the rotating shaft 252 is coaxial with the detection port 150 and extends into the detection port 150, the vision sensor 220 and the annular illumination light source 210 are fixed to a free end of the rotating shaft 252, the vision sensor 220 is located at a center of the detection port 150, and the annular illumination light source 210 is concentric with the detection port 150 and located at a periphery of the vision sensor 220;
the guide bracket 280 is fixedly arranged on the circumferential side wall of the annular illumination light source 210 and is provided with a guide hole 281 extending along the radial direction of the detection port 150, and the laser displacement sensor 240 is arranged on the guide bracket 280 and can slide along the radial direction of the guide hole 281; for example, as shown in fig. 5, the laser displacement sensor 240 has a guide portion 241, the guide portion 241 is embedded in the guide hole 281, and a movable gap exists between the guide portion 241 and the guide hole 281, so that the laser displacement sensor 240 can slide along the guide hole 281 in the radial direction under the action of an external force; when the first motor 251 works, the rotating shaft 252 drives the vision sensor 220, the annular illumination light source 210, the guide support 280, the laser displacement sensor 240, the support plate 253 and a second motor 261 thereon to rotate together, the rotation speed and direction of the first motor 261 are controlled by the PLC 230, and the rotation speed and direction of the circumferential rotation of the laser displacement sensor 240 are further controlled;
the radial sliding driving mechanism 260 is used for driving the laser displacement sensor 240 to slide radially along the guide hole 281, as shown in fig. 5 and 6, which comprises a second motor 261 horizontally arranged, a circular turntable 262 vertically arranged, a connecting rod 263 and a fixed guide rod 264, wherein the second motor 261 is fixedly arranged on the supporting surface of the supporting plate 253, the circular turntable 262 is eccentrically arranged on the output shaft of the second motor 261, an annular guide rail 265 concentric with the circular turntable 262 is formed on the circular turntable 262, the connecting rod 263 is in an inverted L shape, one end of the first sliding block is fixedly connected with the laser displacement sensor 240, the other end of the first sliding block is fixedly connected with a first sliding block 266, a second sliding block 267 is fixedly arranged on the first sliding block 266, the first sliding block 266 is in sliding fit with the annular guide rail 265, the fixed guide rod 264 is fixedly arranged, the second sliding block 267 is in sliding fit with the fixed guide rod 264, and the second sliding block 267 can slide in a reciprocating manner along the length direction of the fixed guide rod 264 under the action of external force; when the second motor 261 works, the circular turntable 262 eccentrically rotates, so that the first slider 266, the second slider 267 and the connecting rod 263 slide along the fixed guide rod 264 through the sliding fit between the first slider 266 and the annular guide rail 265, the sliding fit between the second slider 267 and the fixed guide rod 264 and the fixation of the fixed guide rod 264, and the laser displacement sensor 240 is driven to slide along the guide hole 281. The rotation speed and direction of the second motor 261 are controlled by the PLC controller 230, and the sliding distance and direction of the laser displacement sensor 240 along the guide hole 281 are further controlled; under the combined action of the rotation driving mechanism 250 and the radial sliding driving mechanism 260, the laser displacement sensor 240 rotates along the inner circumference of the plane parallel to the hole opening of the hole to be detected and slides along the radial direction of the detection opening 150, so that the movement track of the laser displacement sensor 240 is an annular curve;
as shown in fig. 4, the liquid spraying apparatus 300 includes a reagent bottle 310 containing phenolphthalein alcohol reagent, a low-pressure electric water pump 320, a liquid conveying pipe 330 and a nozzle 340, the reagent bottle 310 and the low-pressure electric water pump 320 are fixedly arranged in the casing 100, a liquid inlet end of the liquid conveying pipe 330 extends into the reagent bottle 310, a liquid outlet end is positioned outside the reagent bottle 310 and connected with a liquid inlet end of the low-pressure electric water pump 320, a liquid outlet end of the low-pressure electric water pump 320 is connected with the nozzle 340 through a pipeline 350, and the nozzle 340 is fixedly arranged in the air outlet 120 and can be fixed by gluing or fastening; when the low-pressure electric water pump 320 works, the phenolphthalein alcohol reagent in the reagent bottle 310 is pumped out through the liquid conveying pipe 330 and conveyed to the spray head 340 through the pipeline 350, and is sprayed into the hole to be detected on the surface of the concrete measurement area by the spray head 340, so that the liquid spraying operation on the hole to be detected on the surface of the concrete measurement area is realized;
the blower 400 comprises a motor 410 and an impeller 420 driven by the motor 410 to rotate, the motor 410 is fixedly arranged in the casing 100, an air inlet 110 on the casing 100 is positioned on the air inlet side of the impeller 420, an air outlet 120 is positioned on the air outlet side of the impeller 420, so that negative pressure is formed when the motor 410 drives the impeller 420 to rotate, airflow outside the detector casing 100 is sucked into the casing 100 through the air inlet 110 and blown out through the air outlet 120, and the dust removing operation of the hole to be detected on the surface of the concrete detection area is realized; the second control switch controls the liquid spraying device 300 and the air blowing device 400 to work simultaneously, so that the simultaneous operation of liquid spraying and air blowing ash removal is realized, and the measurement efficiency is improved.
Further, the length direction of the fixed guide rod 264 is along the horizontal direction, as shown in fig. 5 and fig. 6, the fixed guide rod 264 is a horizontally arranged straight rod, one end of the straight rod is fixedly connected to the rotating shaft 252, the other end of the straight rod is sleeved on the output shaft of the second motor 261, and a radial gap is formed between the straight rod and the output shaft of the second motor 261 so as not to affect the normal rotation of the output shaft of the second motor 261 and the circular turntable 262; the second sliding block 267 has a guide groove extending in parallel to the longitudinal direction of the fixed guide rod 264, and the second sliding block 267 is slidably engaged with the fixed guide rod 264 by the guide groove thereof, so that it can be reciprocally slid in the longitudinal direction of the fixed guide rod 264 by an external force; the first slider 266 has a guide groove extending in the vertical direction, and the first slider 266 is slidably engaged with the annular guide rail 265 with its guide groove so as not to interfere with the rotation of the annular guide rail 265 with the circular turntable 262.
For further convenience of operation, the outlet 120 is formed on the plane portion 140 and is located at one side of the detection port 150. Air outlet 120 and detection mouth 150 are on the coplanar promptly, then when hydrojet and air-blast ash removal, directly make plane portion 140 towards the hole that awaits measuring, and the hole that awaits measuring is aimed at to air outlet 120, and after hydrojet and air-blast ash removal, move the detector position a little, make plane portion 140 laminate concrete survey district's surface, and detection mouth 150 aim at the hole that awaits measuring can.
In order to make the overall structure of the measuring apparatus uniform and to make it stable, a partition 700 is fixed in the housing 100, as shown in fig. 4, for separating the air blowing device 40 from the measuring device 200 and separating the liquid spraying device from the measuring device 200.
Because the measuring device 200 not only has circumferential rotation, but also has radial sliding, in order to improve the motion stability thereof, so as to be beneficial to ensuring the measuring precision, the measuring device 200 further comprises an auxiliary fixed support 2100, the auxiliary fixed support 2100 is fixedly arranged in the housing 100 and is positioned above the fixed support 290, a through hole 2101 is arranged on the auxiliary fixed support, the rotating shaft 252 passes through the through hole 2101, a gap exists between the through hole 2101 and the rotating shaft 252 so as not to influence the normal rotation of the rotating shaft 252, meanwhile, the through hole 2101 also plays a certain circumferential constraint role on the rotating shaft 252, the first motor 251 is fixedly arranged on the fixed support 290 and is clamped between the auxiliary fixed support 2100 and the fixed support 290, the stability of the first motor 251 is also effectively ensured, and the motion stability of the measuring device 200 is greatly improved.
Further, the measuring device 200 further includes a memory 2110, the memory 2110 is connected to the data processor 270, the housing 100 is provided with a USB interface 160, the memory 2110 is further connected to the USB interface 160, and the power supply 500 is connected to the USB interface 160. The measurement data processed by the data processor 270 may be stored in the memory 2110, and may be output through the USB interface 160 for concrete carbonization analysis, etc., in addition to being displayed on the display unit 130.
In order to facilitate the replenishment of the phenolphthalein alcohol reagent in the reagent bottle 310, a liquid filling opening is formed in the reagent bottle 310, a sealing cap 311 is disposed at the liquid filling opening, and the sealing cap 311 is exposed to the outside of the case 100 so as to open or close the liquid filling opening from the outside of the case 100.
Furthermore, a filter screen is installed on the liquid inlet end of the infusion tube 330 to prevent impurities in the reagent from entering the spray head 340 through the infusion tube 330, and further prevent the spray head 340 from being blocked.
In order to simplify the overall structure of the detector, in this embodiment, the first control switch and the second control switch are integrated into a three-control switch 800, one circuit of the three-control switch 800 is connected to the power switch 600, one end of the three-control switch is connected to the low-voltage electric water pump 320 of the liquid spraying device 300, the other end of the three-control switch is connected to the motor 410 of the air blowing device 400, the circuit connected to the liquid spraying device 300 is connected in parallel to the circuit connected to the motor 410, that is, the three-control switch 800 can be operated to spray liquid and blow air simultaneously, the first motor 251, the second motor 261 and the annular illumination light source 210 of the measuring device 200 are connected in parallel to the other circuit of the three-control switch 800, and illumination and measurement can.
The embodiment also provides a detection method of the concrete carbonization depth detector, which comprises the following steps:
1) electrifying a detector: turn on the power switch 600 to turn on the power;
2) spraying liquid and removing ash of the holes to be detected on the surface of the concrete detection area: the air outlet 120 on the detector shell 100 faces the hole to be detected, the three-control switch 800 is opened, the low-voltage electric water pump 320 of the liquid spraying device 300 starts to work, the phenolphthalein alcohol mixed reagent in the test solution bottle 310 is conveyed to the spray head 340 through the infusion tube 330 and the connecting pipeline 350 between the low-voltage electric water pump 320 and the spray head 340, and the phenolphthalein alcohol mixed reagent is sprayed into the hole to be detected by the spray head 340, so that the liquid is sprayed to the hole to be detected; when the low-voltage electric water pump 320 starts to work, the motor 410 of the blower 400 starts to work, the impeller 420 rotates, and airflow sucked from the air inlet 110 is blown out from the air outlet 120 to remove dust from the hole to be detected;
3) stopping liquid spraying and ash removal: after the liquid spraying and dust removing operations are completed, the three-control switch 800 is turned off, and the liquid spraying device 300 and the air blowing device 400 stop operating;
4) carrying out carbonization depth measurement on the holes to be measured on the surface of the concrete measuring area: observing the color change of concrete on the inner wall of the hole to be detected, attaching the plane part 140 of the shell 100 of the detector to the surface of the concrete detection area after the inner wall of the hole to be detected is not carbonized and the concrete turns red, enabling the detection port 150 on the shell 100 to face the hole to be detected, and enabling the detection end of the laser displacement sensor 340 to be flush with the hole to be detected on the surface of the concrete detection area; the three-control switch 800 is turned on, the annular illumination light source 210 of the measuring device 200 is turned on, the vision sensor 220 works, the vision sensor 220 scans the hole to be measured to obtain an annular boundary curve of the carbonized concrete above the inner wall of the hole to be measured and the non-carbonized concrete below the inner wall of the hole to be measured, the scanned annular boundary curve information is transmitted to the PLC controller 230, the PLC controller 230 controls the first motor 251 and the second motor 261 to work, so that the final motion track of the laser displacement sensor 240 under the common driving action of the rotary driving mechanism 250 and the radial sliding driving mechanism 260 is parallel and the same with the annular boundary curve and moves for a circle along the motion track, during the moving process, the laser displacement sensor 240 measures the depth of each point on the circle of the annular boundary curve, namely the vertical distance between the measuring end of the laser displacement sensor 240 and each point on the circle of the annular boundary curve, and transmits the measured depth value to the data processor 270, averaged by the data processor 270 and displayed on the display unit 130.
The vision sensor 220 may be replaced by a general color sensor, and a sensor for detecting a color by comparing a color of an object with the circular boundary curve information stored in the PLC controller 230 may output a detection result when the two colors are matched within a certain error range.
Furthermore, the maximum measuring range of the laser displacement sensor 240 is 50mm, the accuracy is 0.1mm, namely concrete with the carbonization depth exceeding 10mm can be measured, and the error is small.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A concrete carbonization depth detector is characterized by comprising:
the device comprises a shell, a measuring device, a liquid spraying device and a blowing device which are integrated in the shell, a power supply arranged in the shell, a power switch arranged on the shell and connected with the power supply, a first control switch arranged on the shell and used for controlling the measuring device to work, and a second control switch arranged on the shell and used for controlling the liquid spraying device and the blowing device to work simultaneously, wherein the first control switch and the second control switch are both connected with the power switch;
the shell is provided with an air inlet, an air outlet and a display unit, and is provided with a plane part for being attached to the surface of the concrete measuring area, the plane part is provided with a circular detection port, and the diameter of the detection port is larger than that of a hole to be detected on the surface of the concrete measuring area;
the measuring device comprises an annular lighting light source, a vision sensor, a PLC (programmable logic controller), a laser displacement sensor, a rotation driving mechanism, a radial sliding driving mechanism, a data processor, a guide support and a fixed support, wherein the vision sensor, the PLC, the laser displacement sensor and the data processor are in communication connection, and when the plane part is attached to the surface of the concrete measuring area, the detection end of the laser displacement sensor is flush with the hole to be measured on the surface of the concrete measuring area;
the fixed support is fixedly arranged in the shell, and the rotation driving mechanism, the PLC and the data processor are arranged on the fixed support;
the rotary driving mechanism comprises a first motor, a rotating shaft and a supporting plate, wherein the first motor is vertically arranged, the rotating shaft is coaxially and fixedly connected with an output shaft of the first motor, the supporting plate is fixedly connected with the rotating shaft and is provided with a horizontal supporting surface, the rotating shaft is coaxial with the detection port and extends into the detection port, the vision sensor and the annular illumination light source are fixed on the free end of the rotating shaft, the vision sensor is positioned in the center of the detection port, and the annular illumination light source is concentric with the detection port and is positioned on the periphery of the vision sensor;
the guide support is fixedly arranged on the circumferential side wall of the annular illumination light source and is provided with a guide hole extending along the radial direction of the detection port, and the laser displacement sensor is arranged on the guide support and can slide along the radial direction of the guide hole;
the radial sliding driving mechanism is used for driving the laser displacement sensor to slide along the guide hole in the radial direction and comprises a second motor, a circular rotary table, a connecting rod and a fixed guide rod, wherein the second motor is transversely arranged, the circular rotary table is vertically arranged, the second motor is fixedly arranged on the supporting surface of the supporting plate, the circular rotary table is eccentrically arranged on an output shaft of the second motor, an annular guide rail concentric with the circular rotary table is formed on the circular rotary table, one end of the connecting rod is fixedly connected with the laser displacement sensor, the other end of the connecting rod is fixedly connected with a first sliding block, a second sliding block is fixedly arranged on the first sliding block, the first sliding block is in sliding fit with the annular guide rail, the fixed guide rod is fixedly arranged, and the second sliding block is in sliding fit with the fixed guide rod;
the liquid spraying device comprises a reagent bottle filled with a phenolphthalein alcohol reagent, a low-pressure electric water pump, a liquid conveying pipe and a spray head, wherein the reagent bottle and the low-pressure electric water pump are fixedly arranged in the shell, the liquid inlet end of the liquid conveying pipe extends into the reagent bottle, the liquid outlet end of the liquid conveying pipe is positioned outside the reagent bottle and connected with the liquid inlet end of the low-pressure electric water pump, the liquid outlet end of the low-pressure electric water pump is connected with the spray head through a pipeline, and the spray head is fixedly arranged in the air outlet;
the blower device comprises a motor and an impeller driven by the motor to rotate, the motor is fixedly arranged in the shell, the air inlet is located on the air inlet side of the impeller, and the air outlet is located on the air outlet side of the impeller.
2. The concrete carbonization depth detector according to claim 1, wherein the length direction of the fixed guide bar is in a horizontal direction, the second slider has a guide groove extending in a direction parallel to the length direction of the fixed guide bar, the second slider is slidably fitted with the fixed guide bar by its guide groove, the first slider has a guide groove extending in a vertical direction, and the first slider is slidably fitted with the endless guide rail by its guide groove.
3. The concrete carbonization depth detector according to claim 1, wherein the air outlet is formed in the flat surface portion on a side of the detection port.
4. The concrete carbonization depth detector according to claim 3, wherein a partition is fixedly arranged in the housing for separating the air blowing device from the measuring device.
5. The concrete carbonization depth detector according to claim 4, wherein the measuring device further comprises an auxiliary fixing bracket, the auxiliary fixing bracket is fixedly arranged in the housing and positioned above the fixing bracket, a through hole is formed in the auxiliary fixing bracket, the rotating shaft penetrates through the through hole, and the first motor is fixedly arranged on the fixing bracket and clamped between the auxiliary fixing bracket and the fixing bracket.
6. The concrete carbonization depth detector of claim 1, wherein the measuring device further comprises a memory, the memory is connected with the data processor, the housing is provided with a USB interface, the memory is further connected with the USB interface, and the power supply is connected with the USB interface.
7. A concrete carbonation depth measuring instrument according to claim 1, wherein said reagent bottle is provided with a liquid injection port, and a sealing cap is disposed at said liquid injection port, said sealing cap being exposed to the outside of said case so as to open or close said liquid injection port from the outside of said case.
8. The concrete carbonization depth detector according to claim 1, wherein a filter screen is mounted on the liquid inlet end of the liquid conveying pipe.
9. The detection method of the concrete carbonization depth detector based on any one of claims 1 to 8, is characterized by comprising the following steps:
1) electrifying a detector: turning on a power switch to switch on a power supply;
2) spraying liquid and removing ash of the holes to be detected on the surface of the concrete detection area: an air outlet on the detector shell faces the hole to be detected, a second control switch is turned on, a low-voltage electric water pump of the liquid spraying device starts to work, a phenolphthalein alcohol mixed reagent in the test liquid bottle is conveyed to a spray head through a liquid conveying pipe and a connecting pipeline between the low-voltage electric water pump and the spray head, and the phenolphthalein alcohol mixed reagent is sprayed into the hole to be detected through the spray head, so that the liquid is sprayed to the hole to be detected; when the low-voltage electric water pump starts to work, a motor of the air blowing device starts to work, the impeller rotates, and air flow sucked from the air inlet is blown out from the air outlet to remove dust from the hole to be detected;
3) stopping liquid spraying and ash removal: after the liquid spraying and dust removing work is finished, the second control switch is closed, and the liquid spraying device and the air blowing device stop working;
4) carrying out carbonization depth measurement on the holes to be measured on the surface of the concrete measuring area: observing the color change of concrete on the inner wall of the hole to be detected, attaching the plane part of the shell of the detector to the surface of the concrete detection area after the inner wall of the hole to be detected is not carbonized and the concrete turns red, enabling a detection port on the shell to face the hole to be detected, and enabling the detection end of the laser displacement sensor to be flush with the hole to be detected on the surface of the concrete detection area; the method comprises the steps that a first control switch is turned on, an annular lighting light source of a measuring device is turned on, a vision sensor works, the vision sensor scans a hole to be measured to obtain an annular boundary curve of carbonized concrete above the inner wall of the hole to be measured and non-carbonized concrete below the inner wall of the hole to be measured, the scanned annular boundary curve information is transmitted into a PLC (programmable logic controller), the PLC controls a first motor and a second motor to work, a laser displacement sensor is enabled to move for a circle along a curve track parallel to and the same as the annular boundary curve under the common driving action of a rotation driving mechanism and a radial sliding driving mechanism, the laser displacement sensor measures the depth of the annular boundary curve for a circle in the moving process, the measured depth value is transmitted to a data processor, and the data processor averages the measured depth value and displays the value on a display.
10. The detection method according to claim 9, wherein the maximum range of the laser displacement sensor is 50mm, and the accuracy is 0.1 mm.
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