CN117308837A - Construction engineering crack detection equipment and detection method thereof - Google Patents

Abstract

The invention relates to the technical field of crack detection, in particular to construction engineering crack detection equipment and a detection method thereof, the invention comprises a frame, wherein a connecting component is fixedly arranged at the top end of the frame, an adjusting component is rotationally connected to the bottom surface of the connecting component, and a group of guide components are arranged at both ends of the connecting component; the middle position of the bottom surface of the adjusting component is fixedly provided with a centering component matched with the guiding component for use, and the bottom surface of the adjusting component is provided with two groups of detection components symmetrically arranged relative to the centering component in a threaded manner; the adjusting component is used for synchronously adjusting the positions of the two groups of detecting components on the bottom surface of the adjusting component so as to change the distance between the two groups of detecting components; the centering component is used for enabling a straight line between the two groups of detection components to be perpendicular to the detection position of the crack before detecting the crack depth, the centering component is used for enabling the two groups of detection components to be symmetrically distributed about the crack detection position in the detection process, and meanwhile the centering component is also used for carrying out secondary detection on the crack depth so as to improve detection accuracy.

Description

Construction engineering crack detection equipment and detection method thereof

Technical Field

The invention relates to the technical field of crack detection, in particular to construction engineering crack detection equipment and a detection method thereof.

Background

In engineering construction, cracks are an important defect of a building or a structure, and may cause damage and collapse of the structure, thereby causing serious threat to personnel and property. By timely detecting the cracks, potential structural problems can be found, effective repairing measures are taken, and the safety of the building is ensured.

In the prior art, an ultrasonic crack detector is often used for detecting the depth of cracks on the wall surface, the ground and other positions, and mainly comprises an ultrasonic transmitter, an ultrasonic receiver, a probe and a computer system; in the detection process, an ultrasonic probe is placed on the surface of a detected object, a beam of ultrasonic waves is emitted by an ultrasonic emitter, the ultrasonic waves propagate in the detected object, and when a crack is encountered, part of the ultrasonic waves are reflected back and received by an ultrasonic receiver; in order to ensure the accuracy of the measurement result, positions with different distances are required to be taken at two sides of the crack detection point to serve as detection positions of the two probes, and finally, more accurate detection results are obtained by combining multiple groups of detection data.

However, the ultrasonic crack detector has the following problems in the use process:

when the detection positions of probes on two sides of the crack are determined, the crack is taken as a midpoint through a steel rule, and then the two sides are marked, so that the positions of the probes on two sides are determined;

1. the distance between probes on two sides of the crack and the crack is unequal due to errors easily caused by a manual marking mode of a steel ruler, so that the propagation time of ultrasonic waves on two sides of the crack is different, and the detection result is affected; in addition, the method has the problem of complex operation, and reduces the detection work efficiency.

2. When the detection position of the probe is determined manually by using the steel rule, since the crack is usually curved, when the positions of the probes are marked on two sides of the crack, the straight line between the two probes is difficult to be perpendicular to the crack by naked eyes, and when the straight line between the two probes is not perpendicular to the crack, the path length of the ultrasonic wave transmitted between the probes is different, so that the detection result is affected, and the detection result is error.

Disclosure of Invention

The invention aims to provide construction engineering crack detection equipment so as to solve the problems in the background technology.

The aim of the invention can be achieved by the following technical scheme:

the construction engineering crack detection device comprises a frame, wherein a connecting assembly is fixedly arranged at the top end of the frame, an adjusting assembly is rotatably connected to the bottom surface of the connecting assembly, and a group of guide assemblies acting on the adjusting assembly are arranged at two ends of the connecting assembly; the middle position of the bottom surface of the adjusting component is fixedly provided with a centering component matched with the guiding component for use, and the bottom surface of the adjusting component is provided with two groups of detection components symmetrically arranged relative to the centering component in a threaded manner;

the adjusting component is used for synchronously adjusting the positions of the two groups of detecting components on the bottom surface of the adjusting component so as to change the distance between the two groups of detecting components; the centering component is used for enabling the straight line between the two groups of detection components to be perpendicular to the detection position of the crack before detecting the crack depth, the centering component is used for enabling the two groups of detection components to be symmetrically distributed about the crack detection position in the detection process, and meanwhile the centering component is also used for carrying out secondary detection on the crack depth so as to improve the detection precision.

Further, the frame comprises two bases, an L-shaped supporting rod is fixedly connected to the middle position of the top surface of each base, a reinforcing rod is fixedly connected between the front end and the terminal of each L-shaped supporting rod, and a slotted hole is formed in the top surface of each base;

one end of the L-shaped supporting rods, which is far away from the base, is fixedly connected with the connecting assembly.

Further, the connecting component comprises a first mounting plate fixedly connected with one ends of the two L-shaped supporting rods far away from the base, first fixing seats are fixedly arranged on the bottom surface of the first mounting plate at positions close to two ends of the first mounting plate, two first sliding rods are fixedly connected between the two first fixing seats, a sliding seat is jointly arranged on the two first sliding rods in a sliding mode, and bolts used for limiting the sliding of the sliding seat and the first sliding rods are arranged on side threads of the sliding seat;

the bottom surface fixed mounting of slide has the mounting panel two, the both ends of mounting panel two are fixedly connected with respectively a set of guiding component, the bottom surface intermediate position fixedly connected with spliced pole of mounting panel two, the bottom rotation of spliced pole is connected with adjusting component.

Further, the adjusting component comprises a mounting plate III, the center position of the top surface of the mounting plate III is rotationally connected with the bottom end of the connecting column, one side of the mounting plate III is provided with a first scale, the two ends of the bottom surface of the mounting plate III are fixedly provided with second fixing seats, the middle position of the bottom surface of the mounting plate III is fixedly provided with a mounting block, two second fixing seats are fixedly connected with a second sliding rod, the second sliding rod penetrates through the mounting block, a double-head screw rod is rotationally installed between the two second fixing seats, the double-head screw rod rotationally penetrates through the mounting block, one end of the double-head screw rod rotationally penetrates through the second fixing seat at the corresponding position, and one end of the double-head screw rod penetrating through the second fixing seat is fixedly provided with a first adjusting knob;

two groups of detection assemblies are arranged on the periphery of the double-head screw rod in a threaded manner, the detection assemblies are connected with the periphery of the second sliding rod in a sliding manner, and the two groups of detection assemblies are symmetrically arranged about the mounting block;

the centering component is mounted on the bottom surface of the mounting block.

Further, the detection assembly comprises a sliding block which is in threaded connection with the double-head screw rod and is in sliding connection with the second sliding rod, telescopic plates are fixedly hung on two sides of the bottom surface of the sliding block, and the bottom ends of the two telescopic plates are fixedly connected with a mounting plate IV which is positioned under the sliding block;

an internal thread sleeve is fixedly arranged at the center position of the bottom surface of the sliding block, a first threaded rod matched with the internal thread sleeve is rotatably arranged at the center position of the top surface of the mounting plate IV, the top end of the first threaded rod extends to the inside of the internal thread sleeve, and the first threaded rod is in threaded connection with the internal thread sleeve; the periphery of the first threaded rod is fixedly provided with a second adjusting knob used for driving the first threaded rod to rotate at a position close to the bottom end of the first threaded rod;

the four bottom surface central point of mounting panel puts fixed mounting has spherical connecting seat, the spheroid fixedly connected with connecting rod of spherical connecting seat, the one end fixed mounting who keeps away from spherical connecting seat has the mount pad, detachable fixed mounting has the probe in the mount pad.

Further, the centering assembly comprises a lifting assembly fixedly installed on the bottom surface of the installation block, a positioning assembly is fixedly installed on a lifting component of the lifting assembly, and the lifting assembly is used for driving the positioning assembly to lift so as to finish detection of crack depth;

the positioning component is used for enabling the mounting plate to be in a position state perpendicular to the crack detection position before detection.

Further, the lifting assembly comprises a motor fixedly arranged on the bottom surface of the mounting block, and two sliding columns fixedly arranged on the top surface of the mounting block, wherein the two sliding columns and the motor are distributed in a triangle shape on the bottom surface of the mounting block;

a second threaded rod is fixedly connected to the shaft end of the output shaft of the motor, a lifting plate positioned right below the mounting block is mounted on the periphery of the second threaded rod in a threaded manner, and two sliding columns penetrate through the lifting plate in a sliding manner;

the bottom surface of the lifting plate is fixedly provided with the positioning component.

Further, the positioning assembly comprises a third fixing seat and an electric push rod fixedly arranged at the center of the bottom surface of the lifting plate, the electric push rod and the connecting column are coaxially arranged, an extrusion block is fixedly arranged at the telescopic end of the electric push rod, and inclined planes which are symmetrically arranged at the parts far away from the electric push rod are arranged at the two sides of the extrusion block;

the two third fixing seats are fixedly arranged on the bottom surface of the lifting plate, the two third fixing seats are symmetrically arranged about the electric push rod, the inner side surface of each third fixing seat is fixedly provided with an elastic telescopic rod, the axes of the elastic telescopic rods are parallel to the length direction of the mounting plate III, the telescopic ends of the elastic telescopic rods are fixedly provided with laths, the upper parts of the two laths are in an outward expansion shape, and the inner side surfaces of the outward expansion parts of the two laths are respectively in extrusion contact with two inclined planes of the electric push rod;

the outer side surface of the slat is provided with a second scale for measuring the crack depth along the length direction thereof.

Further, the guide assembly comprises a guide rod, an arc-shaped guide groove and a connecting block, wherein the two ends of the second mounting plate are fixedly connected with a plurality of connecting blocks, one ends of the connecting blocks, far away from the second mounting plate, are fixedly connected with the arc-shaped guide groove together, and the arc-shaped guide groove and the connecting column are coaxially arranged;

the two ends of the top surface of the mounting plate III are fixedly connected with one guide rod, and the top ends of the two guide rods respectively penetrate through the arc-shaped guide grooves at the corresponding positions to the upper parts of the arc-shaped guide grooves;

the periphery of the guide rod is rotatably provided with a shaft sleeve in rolling contact with the inner side surface of the arc-shaped guide groove, the periphery of the guide rod is provided with threads at the part above the arc-shaped guide groove, the periphery of the guide rod is provided with a locking knob through the threads, and the bottom surface of the locking knob is fixedly provided with a rubber gasket.

Another object of the present invention is to provide a method for detecting a construction engineering crack detecting apparatus, comprising the steps of:

s1: determining a measuring area, cleaning the surface of a crack, and ensuring the surface to be flat and clean so as to facilitate ultrasonic propagation;

s2: selecting an appropriate ultrasonic probe and frequency as required and connecting it to an ultrasonic device; setting a proper probe working mode and gain according to the estimated range of the crack depth;

s3: measuring the depth of the crack;

s301: mounting two probes in two sets of detection assemblies;

s302: the method comprises the steps of fixedly mounting a rack on the surface of an object to be detected, initially positioning the rack to center the rack with a crack, and then fixing the rack through a screw;

s303: the device main body is further centered and positioned through the centering component, so that the crack detection point is positioned at the middle position of the two groups of detection components, and the straight line between the other two probes is vertical to the crack detection position;

s304: detecting the crack through two groups of detection components;

s305: the distance between the two groups of detection assemblies and the crack is changed through the adjusting assembly, and then detection is carried out, so that a plurality of groups of detection results are obtained;

s306: secondary detection is carried out on the crack depth through the centering component;

s4: the ultrasonic device converts the measured time into the depth of the crack and displays the depth on a screen of the device; the data can be exported to a computer for further analysis and processing as needed;

s5: the measured crack depth is recorded and a measurement report is made.

The invention has the beneficial effects that:

1. during detection, the double-headed screw rod is rotated through the first adjusting knob in the adjusting assembly, so that the two groups of detecting assemblies move in opposite directions simultaneously, the detection positions of the two groups of probes are rapidly positioned by contrast with the first scale, the process of measuring and marking by using the steel rule is omitted, and the detection working efficiency is improved.

2. Compared with the prior art, the method has the advantages that the problem that the distances between probes on two sides of the crack and the crack are unequal due to errors in the manual steel rule marking mode is solved through the matching arrangement of the frame, the connecting assembly and the centering assembly, so that the detection result is affected.

3. The problem that the straight line between the two probes and the crack are vertical due to the fact that the crack is bent generally and difficult to observe by naked eyes is solved through the arrangement of the lifting assembly and the positioning assembly in the centering assembly, and the accuracy of the detection result is further improved.

4. The matching arrangement of the lifting assembly and the positioning assembly in the centering assembly can enable the positioning assembly to extend into the crack to detect the crack depth, so that the function of detecting the crack depth in two detection modes is realized in a single detection process, and the accuracy of the detection structure is further improved through mutual verification of detection results in the two modes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort;

FIG. 1 is a three-dimensional schematic of the overall structure of the present invention;

FIG. 2 is a three-dimensional schematic view of another angle of FIG. 1;

FIG. 3 is a three-dimensional schematic view of the connection between the frame and the connection assembly of the present invention;

FIG. 4 is a three-dimensional schematic view of another angle of FIG. 3;

FIG. 5 is a three-dimensional schematic diagram of the connection between the adjustment assembly and the detection assembly in the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 2;

FIG. 7 is a three-dimensional schematic view of another angle of FIG. 5;

FIG. 8 is an enlarged view of portion B of FIG. 7;

FIG. 9 is a three-dimensional schematic of a centering assembly of the present invention;

fig. 10 is an enlarged view of a portion C in fig. 9;

FIG. 11 is a three-dimensional schematic view of another angle of FIG. 9;

FIG. 12 is an enlarged view of portion D of FIG. 11;

reference numerals in the drawings are as follows:

the device comprises a 1-frame, a 2-guide component, a 3-connecting component, a 4-adjusting component, a 5-detecting component, a 6-centering component, a 7-base, a 8-slot, a 9-L-shaped supporting rod, a 10-reinforcing rod, a 11-arc-shaped guide slot, a 12-connecting block, a 13-mounting plate I, a 14-mounting plate II, a 15-sliding seat, a 16-first fixing seat, a 17-bolt, a 18-first sliding rod, a 19-thread, a 20-guiding rod, a 21-shaft sleeve, a 22-rubber gasket, a 23-locking knob, a 24-second fixing seat, a 25-first adjusting knob, a 26-mounting plate III, a 27-connecting column, a 28-mounting block, a 29-second sliding rod, a 30-double-headed screw rod, a 31-sliding block, a 32-first scale, a 33-lifting component, a 34-positioning component, a 35-probe, a 36-expansion plate, a 37-mounting plate IV, a 38-spherical connecting seat, a 39-connecting rod, a 40-mounting seat, a 41-second adjusting knob, a 42-first, a 43-female screw sleeve, a 44-motor, a 45-second, a 46-lifting rod, a 47-lifting rod, a second electric sliding rod, a 48-lifting rod, a second elastic pressing block, a 51-expansion plate, a magnetic rod, a 51-lifting rod, a scale.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.

Example 1:

referring to fig. 1 to 12, in an embodiment of the present invention, a construction engineering crack detection device includes a frame 1, a connection assembly 3 is fixedly installed at a top end of the frame 1, an adjusting assembly 4 is rotatably connected to a bottom surface of the connection assembly 3, and a set of guide assemblies 2 acting on the adjusting assembly 4 are disposed at two ends of the connection assembly 3; the middle position of the bottom surface of the adjusting component 4 is fixedly provided with a centering component 6 matched with the guiding component 2, and the bottom surface of the adjusting component 4 is provided with two groups of detection components 5 symmetrically arranged about the centering component 6 in a threaded manner;

the adjusting component 4 is used for synchronously adjusting the positions of the two groups of detecting components 5 on the bottom surface of the adjusting component 4 so as to change the distance between the two groups of detecting components 5; the centering component 6 is used for enabling the straight line between the two groups of detection components 5 to be perpendicular to the detection position of the crack before detecting the crack depth, the centering component 6 is used for enabling the two groups of detection components 5 to be symmetrically distributed about the crack detection position in the detection process, and meanwhile the centering component 6 is also used for carrying out secondary detection on the crack depth so as to improve the detection precision.

As shown in fig. 1 to 4, the frame 1 comprises two bases 7, wherein an L-shaped supporting rod 9 is fixedly connected to the middle position of the top surface of the bases 7, a reinforcing rod 10 is fixedly connected between the front end and the terminal of the L-shaped supporting rod 9, and a slotted hole 8 is formed in the top surface of the bases 7;

the two L-shaped support rods 9 are fixedly connected with the connecting component 3 at one end far away from the base 7.

As shown in fig. 3 and 4, the connecting assembly 3 comprises a first mounting plate 13 fixedly connected with one ends of two L-shaped support rods 9 far away from the base 7, first fixing seats 16 are fixedly arranged on the bottom surface of the first mounting plate 13 at positions close to two ends of the first mounting plate, two first sliding rods 18 are fixedly connected between the two first fixing seats 16, sliding seats 15 are jointly arranged on the two first sliding rods 18 in a sliding manner, and bolts 17 for limiting relative sliding between the sliding seats 15 and the first sliding rods 18 are arranged on the side surfaces of the sliding seats 15 in a threaded manner;

the bottom surface fixed mounting of slide 15 has mounting panel two 14, and the both ends of mounting panel two 14 are fixedly connected with a set of direction subassembly 2 respectively, and the bottom surface intermediate position fixedly connected with spliced pole 27 of mounting panel two 14, the bottom rotation of spliced pole 27 is connected with adjusting part 4.

As shown in fig. 5 and 7, the adjusting component 4 comprises a mounting plate three 26, the center position of the top surface of the mounting plate three 26 is rotationally connected with the bottom end of a connecting column 27, one side of the mounting plate three 26 is provided with a first scale 32, two ends of the bottom surface of the mounting plate three 26 are fixedly provided with second fixing seats 24, the middle position of the bottom surface of the mounting plate three 26 is fixedly provided with a mounting block 28, a second sliding rod 29 is fixedly connected between the two second fixing seats 24, the second sliding rod 29 penetrates through the mounting block 28, a double-head screw rod 30 is rotationally arranged between the two second fixing seats 24, the double-head screw rod 30 penetrates through the mounting block 28 in a rotating manner, one end of the double-head screw rod 30 penetrates through the second fixing seat 24 at the corresponding position, and one end of the double-head screw rod 30 penetrates through the second fixing seat 24 to be fixedly provided with a first adjusting knob 25;

two groups of detection assemblies 5 are arranged on the periphery of the double-head screw rod 30 in a threaded manner, the detection assemblies 5 are connected with the periphery of the second sliding rod 29 in a sliding manner, and the two groups of detection assemblies 5 are symmetrically arranged about the mounting block 28;

the centering assembly 6 is mounted on the bottom surface of the mounting block 28.

As shown in fig. 5, 7 and 8, the detection assembly 5 comprises a sliding block 31 in threaded connection with the double-head screw rod 30 and in sliding connection with the second sliding rod 29, telescopic plates 36 are fixedly hung on two sides of the bottom surface of the sliding block 31, and mounting plates IV 37 positioned under the sliding block 31 are fixedly connected with the bottom ends of the two telescopic plates 36 together;

an internal thread sleeve 43 is fixedly arranged at the center of the bottom surface of the sliding block 31, a first threaded rod 42 matched with the internal thread sleeve 43 is rotatably arranged at the center of the top surface of the mounting plate IV 37, the top end of the first threaded rod 42 extends into the internal thread sleeve 43, and the first threaded rod 42 is in threaded connection with the internal thread sleeve 43; a second adjusting knob 41 for driving the first threaded rod 42 to rotate is fixedly arranged on the periphery of the first threaded rod 42 at a position close to the bottom end of the first threaded rod;

the center of the bottom surface of the mounting plate IV 37 is fixedly provided with a spherical connecting seat 38, a spherical body of the spherical connecting seat 38 is fixedly connected with a connecting rod 39, one end of the connecting rod 39 away from the spherical connecting seat 38 is fixedly provided with a mounting seat 40, and the probe 35 is detachably and fixedly arranged in the mounting seat 40.

As shown in fig. 7, the centering component 6 includes a lifting component 33 fixedly installed on the bottom surface of the mounting block 28, a positioning component 34 is fixedly installed on a lifting component of the lifting component 33, and the lifting component 33 is used for driving the positioning component 34 to lift so as to complete detection of the crack depth;

the positioning assembly 34 is used for enabling the third mounting plate 26 to be in a position perpendicular to the crack detection position before detection.

As shown in fig. 9 to 12, the lifting assembly 33 includes a motor 44 fixedly installed on the bottom surface of the mounting block 28, and two slide posts 46 fixedly installed on the top surface of the mounting block 28, the two slide posts 46 and the motor 44 being distributed in a triangle shape on the bottom surface of the mounting block 28;

a second threaded rod 45 is fixedly connected to the shaft end of the output shaft of the motor 44, a lifting plate 49 positioned right below the mounting block 28 is arranged on the periphery of the second threaded rod 45 in a threaded manner, and two sliding columns 46 penetrate through the lifting plate 49 in a sliding manner;

the lifting plate 49 has a positioning assembly 34 fixedly mounted on a bottom surface thereof.

The positioning assembly 34 comprises a third fixed seat 50 and an electric push rod 52 fixedly arranged at the center of the bottom surface of the lifting plate 49, the electric push rod 52 and the connecting column 27 are coaxially arranged, an extrusion block 53 is fixedly arranged at the telescopic end of the electric push rod 52, and two sides of the extrusion block 53 are inclined planes which are symmetrically arranged at the part far away from the electric push rod 52;

the two third fixing seats 50 are arranged, the two third fixing seats 50 are fixedly arranged on the bottom surface of the lifting plate 49, the two third fixing seats 50 are symmetrically arranged about the electric push rod 52, the inner side surface of the third fixing seat 50 is fixedly provided with an elastic telescopic rod 51, the axis of the elastic telescopic rod 51 is parallel to the length direction of the mounting plate III 26, the telescopic ends of the elastic telescopic rod 51 are fixedly provided with the laths 47, the upper parts of the two laths 47 are in an outward expansion shape, and the inner side surfaces of the outward expansion parts of the two laths 47 are respectively in extrusion contact with two inclined surfaces of the electric push rod 52;

the outer side surface of the slat 47 is provided with a second scale 48 for measuring the depth of the crack along the length direction thereof.

When the detection positions of probes on two sides of the crack are determined, the crack is taken as a midpoint through a steel rule, and then the two sides are marked, so that the positions of the probes on two sides are determined; this process has the following problems:

1. the distance between probes on two sides of the crack and the crack is unequal due to errors easily caused by a manual marking mode of a steel ruler, so that the propagation time of ultrasonic waves on two sides of the crack is different, and the detection result is affected; in addition, the method has the problem of complex operation, and reduces the detection work efficiency.

2. When the detection position of the probe is determined manually by using the steel rule, since the crack is usually curved, when the positions of the probes are marked on two sides of the crack, the straight line between the two probes is difficult to be perpendicular to the crack by naked eyes, and when the straight line between the two probes is not perpendicular to the crack, the path length of the ultrasonic wave transmitted between the probes is different, so that the detection result is affected, and the detection result is error.

And when the invention is used, the invention comprises the following steps:

placing the device main body on the surface of an object to be detected, then observing the surface by naked eyes, moving the device main body to a position centered on the crack detection position, and then fixing the device main body in the slotted hole 8 through a screw; the device main body is further centered and positioned through the centering component 6, so that the crack detection point is positioned at the middle position of the two groups of detection components 5, and the straight line between the other two probes is vertical to the crack detection position; detecting the cracks through two groups of detection assemblies 5; the distance between the two groups of detection assemblies 5 and the crack is changed through the adjusting assembly 4, and then detection is carried out, so that a plurality of groups of detection results are obtained; secondary detection of crack depth is carried out through the centering component 6; thus, the depth detection work of the cracks is completed.

Specifically, when the device is further centered and positioned by the centering component 6, the bolt 17 is loosened in the connecting component 3, so that the sliding seat 15 and the first sliding rod 18 can slide relatively, and meanwhile, the two groups of guide components 2 are loosened, so that the adjusting component 4 and the bolt 17 can rotate; then, the motor 44 is started to drive the threaded rod II 45 to rotate, so that the lifting plate 49 drives the positioning assembly 34 to descend until the bottom end of the slat 47 in the positioning assembly 34 is inserted into the crack, then, the electric push rod 52 is started to extend in the positioning assembly 34, the extrusion block 53 is driven to press downwards, the two slats 47 are extruded and then move away from each other in a separating direction, one ends of the two slats 47 in the crack are respectively in extrusion contact with two sides of the crack, in the process, the acting force between the two slats 47 and the crack enables the sliding seat 15 to move on the first sliding rod 18 and right above a crack detection point in the movement of the sliding seat 15 without the action, so that secondary adjustment is realized, the centering precision of the device main body and the crack is improved, and the error of a detection result is reduced; meanwhile, the acting force between the strip plate 47 and the crack drives the adjusting component 4 and the connecting column 27 to correspondingly rotate, so that the length direction of the mounting plate III 26 and the crack detection point position are in a vertical state, namely, the straight line formed between the two groups of detection components 5 and the crack detection point position are in a vertical state; then the first sliding rod 18 is locked with the sliding seat 15 through the bolt 17, and the rotation between the adjusting component 4 and the connecting column 27 is limited through the locking of the guiding component 2, so that the installation work before the detection is completed;

during detection, the double-headed screw rod 30 is rotated through the first adjusting knob 25 in the adjusting assembly 4, so that the two groups of detecting assemblies 5 move in opposite directions simultaneously, the detection positions of the two groups of probes 35 are rapidly positioned by comparing with the first scale 32, the process of measuring and marking by using a steel rule is omitted, and the detection working efficiency is improved.

Specifically, in the detection assembly 5, the first threaded rod 42 is rotated through the second adjusting knob 41, and the expansion plate 36 is driven to extend, so that the fourth mounting plate 37 is lowered until the probe 35 contacts the surface of the object to be detected, wherein the contact surface of the probe 35 can be finely adjusted through the arrangement of the spherical connecting seat 38 and the connecting rod 39, so that the probe 35 is fully contacted with the surface of the object to be detected, and the accuracy of ultrasonic detection is improved;

after the two groups of detection assemblies 5 detect the depth of the crack, the positioning assembly 34 is driven to descend by the lifting assembly 33 in the centering assembly 6, so that the slat 47 is inserted into the crack, the depth value of the crack is obtained through the second scale 48 on the surface of the slat 47, the detection of the depth of the crack in the second detection mode is completed, and the accuracy of the final detection result is improved through the comparison and verification of the two detection modes.

Compared with the prior art that the steel rule is manually marked, the invention is characterized by the frame 1,

2. The cooperation setting of coupling assembling 3, 4 and centering subassembly 6 has solved the mode that the manual work used the steel rule mark and has had the error easily to lead to the probe of crack both sides apart from the distance inequality of crack to influence the problem of the result of detection.

The problem that the straight line between the two probes is difficult to be vertical to the crack due to the fact that the crack is bent generally is solved in the centering assembly 6 through the arrangement of the lifting assembly 33 and the positioning assembly 34, and the accuracy of the detection result is further improved;

meanwhile, the matching arrangement of the lifting assembly 33 and the positioning assembly 34 in the centering assembly 6 can enable the positioning assembly 34 to extend into the crack to detect the crack depth, so that the function of detecting the crack depth in two detection modes is realized in a single detection process, and the accuracy of a detection structure is further improved through mutual verification of detection results in the two modes.

Example 2:

referring to fig. 1 to 6, based on embodiment 1, the guide assembly 2 includes a guide rod 20, an arc guide groove 11 and a connection block 12, two ends of the second mounting plate 14 are fixedly connected with a plurality of connection blocks 12, one ends of the plurality of connection blocks 12 far away from the second mounting plate 14 are fixedly connected with the arc guide groove 11, and the arc guide groove 11 and the connection column 27 are coaxially arranged;

two ends of the top surface of the mounting plate III 26 are fixedly connected with a guide rod 20, and the top ends of the two guide rods 20 respectively penetrate through the arc-shaped guide grooves 11 at corresponding positions to the upper parts of the arc-shaped guide grooves 11;

the periphery of the guide rod 20 is rotatably provided with a shaft sleeve 21 in rolling contact with the inner side surface of the arc-shaped guide groove 11, the periphery of the guide rod 20 is provided with threads 19 at a part above the arc-shaped guide groove 11, the periphery of the guide rod 20 is provided with a locking knob 23 through the threads 19, and the bottom surface of the locking knob 23 is fixedly provided with a rubber gasket 22.

When the centering assembly 6 is adjusted and centered, the locking knob 23 is rotated to separate the rubber gasket 22 from the arc-shaped guide groove 11, the guide rod 20 can relatively slide between the shaft sleeve 21 and the arc-shaped guide groove 11 at the moment, after the centering assembly 6 is adjusted, the locking knob 23 drives the rubber gasket 22 to be in extrusion contact with the arc-shaped guide groove 11, and the guide rod 20 is locked with the arc-shaped guide groove 11, so that the rotation between the adjusting assembly 4 and the connecting column 27 is limited, and the device is stably positioned at the adjusted detection position;

through the setting of the guiding component 2, a guiding limit function is provided for the rotation movement between the adjusting component 4 and the connecting column 27, and the guiding component also has a switching function for rotating the adjusting component 4, so that the stability of the guiding component is improved before and after adjustment, and the accuracy of the detection result is improved.

Example 3:

referring to fig. 1 to 12, on the basis of embodiment 1, a detection method of a construction engineering crack detection device is provided in this example, including the following steps:

s1: : determining a measuring area, cleaning the surface of a crack, and ensuring the surface to be flat and clean so as to facilitate ultrasonic propagation;

s2: selecting an appropriate ultrasonic probe and frequency as required and connecting it to an ultrasonic device; setting a proper probe working mode and gain according to the estimated range of the crack depth;

s3: measuring the depth of the crack;

s301: two probes are installed in two groups of detection assemblies 5;

s302: the method comprises the steps of fixedly mounting a rack 1 on the surface of an object to be measured, initially positioning the rack 1 to center the rack 1 with a crack, and then fixing the rack 1 through screws;

s303: the device main body is further centered and positioned through the centering component 6, so that the crack detection point is positioned at the middle position of the two groups of detection components 5, and the straight line between the other two probes is vertical to the crack detection position;

s304: detecting the cracks through two groups of detection assemblies 5;

s305: the distance between the two groups of detection assemblies 5 and the crack is changed through the adjusting assembly 4, and then detection is carried out, so that a plurality of groups of detection results are obtained;

s306: secondary detection of crack depth is carried out through the centering component 6;

s4: the ultrasonic device converts the measured time into the depth of the crack and displays the depth on a screen of the device; the data can be exported to a computer for further analysis and processing as needed;

s5: the measured crack depth is recorded and a measurement report is made.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.

Claims (10)

1. The construction engineering crack detection device comprises a frame (1) and is characterized in that a connecting component (3) is fixedly arranged at the top end of the frame (1), an adjusting component (4) is rotatably connected to the bottom surface of the connecting component (3), and a group of guide components (2) acting on the adjusting component (4) are arranged at two ends of the connecting component (3); the middle position of the bottom surface of the adjusting component (4) is fixedly provided with a centering component (6) matched with the guiding component (2), and the bottom surface of the adjusting component (4) is provided with two groups of detection components (5) symmetrically arranged relative to the centering component (6) in a threaded manner;

the adjusting component (4) is used for synchronously adjusting the positions of the two groups of detecting components (5) on the bottom surface of the adjusting component (4) so as to change the distance between the two groups of detecting components (5); the centering component (6) is used for enabling a straight line between the two groups of detection components (5) to be perpendicular to the detection position of the crack before detecting the crack depth, the centering component (6) is used for enabling the two groups of detection components (5) to be symmetrically distributed on the crack detection position in the detection process, and meanwhile the centering component (6) is also used for carrying out secondary detection on the crack depth so as to improve detection accuracy.

2. The construction engineering crack detection device according to claim 1, wherein the frame (1) comprises two bases (7), an L-shaped supporting rod (9) is fixedly connected to the middle position of the top surface of the base (7), a reinforcing rod (10) is fixedly connected between the front end and the terminal of the L-shaped supporting rod (9), and a slotted hole (8) is formed in the top surface of the base (7);

one end of each L-shaped supporting rod (9) far away from the base (7) is fixedly connected with the connecting component (3) together.

3. The construction engineering crack detection device according to claim 1, wherein the connecting assembly (3) comprises a first mounting plate (13) fixedly connected with one end, far away from the base (7), of the two L-shaped supporting rods (9), first fixing seats (16) are fixedly arranged on the bottom surface of the first mounting plate (13) at positions close to two ends of the first mounting plate, two first sliding rods (18) are fixedly connected between the two first fixing seats (16), sliding seats (15) are jointly arranged on the two first sliding rods (18) in a sliding mode, and bolts (17) used for limiting relative sliding between the sliding seats (15) and the first sliding rods (18) are arranged on side threads of the sliding seats (15);

the bottom surface fixed mounting of slide (15) has mounting panel two (14), the both ends of mounting panel two (14) are respectively fixedly connected with a set of guiding component (2), and the bottom surface intermediate position fixedly connected with spliced pole (27) of mounting panel two (14), the bottom rotation of spliced pole (27) is connected with adjusting component (4).

4. The construction engineering crack detection device according to claim 3, wherein the adjusting component (4) comprises a mounting plate III (26), the top surface center position of the mounting plate III (26) is rotationally connected with the bottom end of the connecting column (27), one side of the mounting plate III (26) is provided with a first scale (32), two ends of the bottom surface of the mounting plate III (26) are fixedly provided with second fixing seats (24), a mounting block (28) is fixedly arranged in the middle of the bottom surface of the mounting plate III (26), a second sliding rod (29) is fixedly connected between the two second fixing seats (24), the second sliding rod (29) penetrates through the mounting block (28), a double-end screw rod (30) is rotationally arranged between the two second fixing seats (24), one end of the double-end screw rod (30) is rotationally arranged through the second fixing seat (24) in the corresponding position, and one end of the double-end screw rod (30) penetrating through the second fixing seat (24) is fixedly provided with a first adjusting knob (25);

two groups of detection assemblies (5) are arranged on the periphery of the double-head screw rod (30) in a threaded manner, the detection assemblies (5) are connected with the periphery of the second sliding rod (29) in a sliding manner, and the two groups of detection assemblies (5) are symmetrically arranged relative to the mounting block (28);

the centering assembly (6) is mounted on the bottom surface of the mounting block (28).

5. The construction engineering crack detection device according to claim 4, wherein the detection assembly (5) comprises a sliding block (31) which is in threaded connection with a double-head screw rod (30) and is in sliding connection with a second sliding rod (29), telescopic plates (36) are fixedly hung on two sides of the bottom surface of the sliding block (31), and mounting plates IV (37) which are positioned under the sliding block (31) are fixedly connected with the bottom ends of the two telescopic plates (36) together;

an inner thread sleeve (43) is fixedly arranged at the center of the bottom surface of the sliding block (31), a first threaded rod (42) matched with the inner thread sleeve (43) is rotatably arranged at the center of the top surface of the mounting plate IV (37), the top end of the first threaded rod (42) extends to the inner part of the inner thread sleeve (43), and the first threaded rod (42) is in threaded connection with the inner thread sleeve (43); a second adjusting knob (41) for driving the first threaded rod (42) to rotate is fixedly arranged on the periphery of the first threaded rod (42) at a position close to the bottom end of the first threaded rod;

the utility model discloses a probe, including mounting panel, sphere connecting seat, connecting rod, probe, connecting rod, mounting panel, probe, connecting rod, fixing plate, detachable fixed mounting is had spherical connecting seat (38) in the bottom surface central point of mounting panel IV (37), the spheroid fixedly connected with connecting rod (39) of spheroid connecting seat (38), one end fixed mounting that the spherical connecting seat (38) was kept away from to connecting rod (39) has mount pad (40), detachable fixed mounting has probe (35) in mount pad (40).

6. The construction engineering crack detection device according to claim 4, wherein the centering assembly (6) comprises a lifting assembly (33) fixedly installed on the bottom surface of the installation block (28), a positioning assembly (34) is fixedly installed on a lifting component of the lifting assembly (33), and the lifting assembly (33) is used for driving the positioning assembly (34) to lift so as to complete the crack depth detection;

the positioning assembly (34) is used for enabling the mounting plate III (26) to be in a position perpendicular to a crack detection position before detection.

7. A construction crack detection device as claimed in claim 6, characterized in that the lifting assembly (33) comprises a motor (44) fixedly mounted on the bottom surface of the mounting block (28), and two slide posts (46) fixedly mounted on the top surface of the mounting block (28), the two slide posts (46) and the motor (44) being distributed in a triangle on the bottom surface of the mounting block (28);

a second threaded rod (45) is fixedly connected to the shaft end of the output shaft of the motor (44), a lifting plate (49) positioned right below the mounting block (28) is mounted on the periphery of the second threaded rod (45) in a threaded manner, and two sliding columns (46) penetrate through the lifting plate (49) in a sliding manner;

the bottom surface of the lifting plate (49) is fixedly provided with the positioning component (34).

8. The construction engineering crack detection device according to claim 7, wherein the positioning assembly (34) comprises a third fixing seat (50) and an electric push rod (52) fixedly installed at the center of the bottom surface of the lifting plate (49), the electric push rod (52) and the connecting column (27) are coaxially arranged, an extrusion block (53) is fixedly installed at the telescopic end of the electric push rod (52), and inclined planes which are symmetrically arranged at the parts far away from the electric push rod (52) are arranged at two sides of the extrusion block (53);

the three fixing seats (50) are provided with two, the two third fixing seats (50) are fixedly arranged on the bottom surface of the lifting plate (49), the two third fixing seats (50) are symmetrically arranged relative to the electric push rod (52), the inner side surface of each third fixing seat (50) is fixedly provided with an elastic telescopic rod (51), the axis of each elastic telescopic rod (51) is parallel to the length direction of the mounting plate III (26), the telescopic ends of the elastic telescopic rods (51) are fixedly provided with the battens (47), the upper parts of the two battens (47) are outwards expanded, and the inner side surfaces of the outwards expanded parts of the two battens (47) are respectively in extrusion contact with the two inclined surfaces of the electric push rod (52);

the outer side of the strip plate (47) is provided with a second scale (48) for measuring the crack depth along the length direction.

9. The construction engineering crack detection device according to claim 4, wherein the guide assembly (2) comprises a guide rod (20), an arc-shaped guide groove (11) and a connecting block (12), two ends of the mounting plate II (14) are fixedly connected with a plurality of connecting blocks (12), one ends of the connecting blocks (12) far away from the mounting plate II (14) are fixedly connected with the arc-shaped guide groove (11) together, and the arc-shaped guide groove (11) and the connecting column (27) are coaxially arranged;

the two ends of the top surface of the mounting plate III (26) are fixedly connected with one guide rod (20), and the top ends of the two guide rods (20) respectively penetrate through the arc-shaped guide grooves (11) at the corresponding positions to the upper parts of the arc-shaped guide grooves (11);

the periphery of the guide rod (20) is rotatably provided with a shaft sleeve (21) in rolling contact with the inner side surface of the arc-shaped guide groove (11), a thread (19) is arranged on the periphery of the guide rod (20) at a part above the arc-shaped guide groove (11), a locking knob (23) is arranged on the periphery of the guide rod (20) through the thread (19) in a threaded manner, and a rubber gasket (22) is fixedly arranged on the bottom surface of the locking knob (23).

10. A detection method of a construction engineering crack detection apparatus as claimed in claim 1, characterized in that the detection method comprises the steps of:

s1: : determining a measuring area, cleaning the surface of a crack, and ensuring the surface to be flat and clean so as to facilitate ultrasonic propagation;

s2: selecting an appropriate ultrasonic probe and frequency as required and connecting it to an ultrasonic device; setting a proper probe working mode and gain according to the estimated range of the crack depth;

s3: measuring the depth of the crack;

s301: two probes are arranged in two groups of detection assemblies (5);

s302: the method comprises the steps of fixedly mounting a rack (1) on the surface of an object to be detected, initially positioning the rack (1) to enable the rack (1) to be centered with a crack, and then fixing the rack (1) through a screw;

s303: the device main body is further centered and positioned through the centering component (6), so that the crack detection point position is positioned at the middle position of the two groups of detection components (5), and the straight line between the other two probes is vertical to the crack detection position;

s304: detecting the cracks through two groups of detection assemblies (5);

s305: the distance between the two groups of detection assemblies (5) and the crack is changed through the adjusting assembly (4), and then detection is carried out to obtain a plurality of groups of detection results;

s306: secondary detection of the crack depth is carried out through the centering component (6);

s4: the ultrasonic device converts the measured time into the depth of the crack and displays the depth on a screen of the device; the data can be exported to a computer for further analysis and processing as needed;

s5: the measured crack depth is recorded and a measurement report is made.