CN111413405A - Concrete crack detection device and control method thereof - Google Patents
Concrete crack detection device and control method thereof Download PDFInfo
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- CN111413405A CN111413405A CN202010399680.4A CN202010399680A CN111413405A CN 111413405 A CN111413405 A CN 111413405A CN 202010399680 A CN202010399680 A CN 202010399680A CN 111413405 A CN111413405 A CN 111413405A
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- 238000001514 detection method Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 19
- 238000010030 laminating Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000008859 change Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
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- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a concrete crack detection device and a control method thereof, and the concrete crack detection device comprises a machine body and a fixing head, wherein spring wires are arranged on two sides of the upper end of the machine body, an ultrasonic detection probe is fixed at the tail end of each spring wire, pull handles are distributed on the top of the upper end of each ultrasonic detection probe, a connecting rod penetrates through the middle of the inner side of each ultrasonic detection probe, the fixing head is fixed on the outer wall of the middle of each connecting rod, a connecting mechanism is arranged at the lower end of each fixing head, and a sliding plate is attached to the bottom of each connecting rod. The concrete crack detection device and the control method thereof are provided with the machine body, the machine body is in elastic connection with the ultrasonic detection probe, the whole machine body is connected with the ultrasonic detection probe through the spring wire, the spring wire has a good elastic drawing effect, the requirement of long-distance pulling of the ultrasonic detection probe is met, and through the elasticity of the spring wire, when one end of the ultrasonic detection probe is loosened, the spring wire is automatically drawn in, so that a user can conveniently take up and use the device.
Description
Technical Field
The invention relates to the technical field of civil engineering detection, in particular to a concrete crack detection device and a control method thereof.
Background
Cracks are prevalent in concrete structures for a variety of reasons. The occurrence of cracks can reduce the anti-permeability capability of the building, influence the use function of the building, simultaneously cause the corrosion of steel bars and the carbonization of concrete, reduce the durability of a concrete structure and influence the bearing capacity of the building. Therefore, a reasonable detection scheme is determined for the crack, the property of the crack is judged, the hazard of the crack is determined, and corresponding remedial measures are formulated, wherein the concrete crack detector plays an important role in the concrete crack detection.
The detection device in the market has a high holding part in use, provides a user with a bad experience effect, and has a limited detection height, so that the concrete crack detection device and the control method thereof are provided.
Disclosure of Invention
The invention aims to provide a concrete crack detection device and a control method thereof, and aims to solve the problems that the detection device in the market proposed in the background technology has a high holding part in use, gives a user a bad experience effect, and has a limited detection height of detection equipment.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a concrete crack detection device and control method thereof, includes organism and fixed head, the upper end both sides of organism are provided with the spring wire, and the end of spring wire is fixed with ultrasonic detection probe, ultrasonic detection probe's upper end top distributes and has draws the handle, and ultrasonic detection probe's inboard middle part runs through there is the connecting rod, the middle part outer wall of connecting rod is fixed with the fixed head, and the lower extreme of fixed head is provided with coupling mechanism, the bottom laminating of connecting rod has the slide, ultrasonic detection probe's bottom laminating has the pad.
Preferably, the body is electrically connected with the ultrasonic detection probe through a spring wire, and the body is elastically connected with the ultrasonic detection probe.
Preferably, the organism is including protective housing, side protecting cover, handle, cushion layer, display screen and operating panel, and protective housing's outer wall both sides laminating has the side protecting cover, the inboard middle part of side protecting cover is provided with the handle, and the inner wall laminating of handle has the cushion layer, protective housing's inboard middle part distributes and has the display screen, and the both sides of display screen are provided with operating panel.
Preferably, the handle and the cushion layer are mutually attached, and the handle is distributed along the central line of the protective shell.
Preferably, coupling mechanism is including connecting block, swinging boom, fixed block and embedding dish, and the lower extreme bottom of connecting block is provided with the swinging boom, the terminal swing joint of lower extreme of swinging boom has the fixed block, and the inboard of fixed block is provided with the embedding dish.
Preferably, the connecting block forms a side rotating structure through the rotating arm and the fixing block, and the connecting block is distributed along the center line of the fixing head.
Preferably, be detachable construction between ultrasonic detection probe and the connecting rod, and ultrasonic detection probe along the vertical axis department symmetric distribution of connecting rod.
Preferably, the sliding plates are mutually attached along the bottoms of the connecting rods, and the sliding plates are hinged with the connecting rods.
Preferably, the control method of the concrete crack detection device adopts P L C to control the concrete crack detection device.
Compared with the prior art, the invention has the beneficial effects that: the concrete crack detection device and the control method thereof are provided with the machine body, the machine body is in elastic connection with the ultrasonic detection probe, the whole machine body is connected with the ultrasonic detection probe through the spring wire, the spring wire has a good elastic drawing effect, the requirement of long-distance pulling of the ultrasonic detection probe is met, and through the elasticity of the spring wire, when one end of the ultrasonic detection probe is sent out, the spring wire is automatically folded, so that a user can conveniently fold and unfold the concrete crack detection device.
The handle distributes along protective housing's central line department, this organism utilizes the compressive strength that ultrasonic wave propagation speed and resilience value reflect the concrete with the interrelation between the compressive strength of concrete, and can utilize the time (when sound) and the wave amplitude value of ultrasonic wave propagation in the concrete, the change of frequency value calculates the crack depth, confirm inside fissured position, show the measured data through the display screen and supply the operator to observe the record, and when holding the organism, the accessible holds handle department, hold this organism, and handle department adopts the cushion layer to carry out the external protection, can improve the coefficient of friction of holding the middle hand portion, give the more comfortable experience of holding of user simultaneously.
The connecting block distributes along the central line department of fixed head, the embedding dish is inserted to the user's accessible body of rod, the embedding dish is fixed the body of rod, reach the detection height that promotes this connecting rod through the body of rod, satisfy the user and detect the concrete wall of high distance, when the user needs place through carrying out the multi-angle to the connecting rod, accessible swing swinging boom, the swinging boom rotates, reach the rotatory effect of fixed head side, and this fixed head distributes along the axis department of connecting rod, improve overall stability.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of a connecting rod according to the present invention;
FIG. 3 is a schematic side view of the connecting rod of the present invention.
In the figure: 1. a body; 101. a protective housing; 102. a side shield; 103. a handle; 104. a soft cushion layer; 105. a display screen; 106. an operation panel; 2. a spring wire; 3. an ultrasonic detection probe; 4. pulling a handle; 5. a connecting rod; 6. a fixed head; 7. a connecting mechanism; 701. connecting blocks; 702. a rotating arm; 703. a fixed block; 704. an embedded disk; 8. sticking a plate; 9. a slide board.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a concrete crack detection device and a control method thereof comprise a machine body 1, a protective shell 101, a side protective cover 102, a handle 103, a cushion layer 104, a display screen 105, an operation panel 106, a spring wire 2, an ultrasonic detection probe 3, a pull handle 4, a connecting rod 5, a fixed head 6, a connecting mechanism 7, a connecting block 701, a rotating arm 702, a fixed block 703, an embedding disc 704, a sticking disc 8 and a sliding plate 9, wherein the spring wire 2 is arranged on two sides of the upper end of the machine body 1, the ultrasonic detection probe 3 is fixed at the tail end of the spring wire 2, the machine body 1 is electrically connected with the ultrasonic detection probe 3 through the spring wire 2, the machine body 1 is elastically connected with the ultrasonic detection probe 3, the whole machine body 1 is connected with the ultrasonic detection probe 3 through the spring wire 2, the spring wire 2 has good elastic drawing effect, and the requirement of long-distance drawing of the ultrasonic detection probe 3 during use is, and through the elasticity of the spring wire 2, when one end of the ultrasonic detection probe 3 is sent, the spring wire 2 is automatically folded, so that a user can conveniently fold and unfold the spring wire;
the machine body 1 comprises a protective shell 101, side protective covers 102, a handle 103, a cushion layer 104, a display screen 105 and an operation panel 106, wherein the side protective covers 102 are attached to two sides of the outer wall of the protective shell 101, the handle 103 is arranged in the middle of the inner side of each side protective cover 102, the cushion layer 104 is attached to the inner wall of each handle 103, the display screen 105 is distributed in the inner side of the protective shell 101, the operation panels 106 are arranged on two sides of each display screen 105, the handles 103 are attached to the cushion layers 104, the handles 103 are distributed along the center line of the protective shell 101, the machine body 1 reflects the compressive strength of concrete by utilizing the mutual relation between the propagation speed and the rebound value of ultrasonic waves and the compressive strength of concrete, can utilize the time (during sound) of the ultrasonic waves propagating in the concrete and the change of the wave amplitude value and the frequency value to calculate the crack depth and determine the position of an internal crack, and display the detection data through the display screen 105 for an operator to, when the machine body 1 is held, the machine body 1 can be held through the holding handle 103, and the soft cushion layer 104 is adopted at the handle 103 for external protection, so that the friction coefficient of the hand in holding can be improved, and a more comfortable holding experience is provided for a user;
the pull handles 4 are distributed at the top of the upper end of the ultrasonic detection probe 3, the connecting rod 5 penetrates through the middle of the inner side of the ultrasonic detection probe 3, a detachable structure is formed between the ultrasonic detection probe 3 and the connecting rod 5, the ultrasonic detection probe 3 is symmetrically distributed along the vertical central axis of the connecting rod 5, and when a user needs to separate the ultrasonic detection probe 3 from the connecting rod 5, the effect of separating the ultrasonic detection probe 3 from the connecting rod 5 can be achieved only by screwing down the fixing screws on the side faces;
the outer wall of the middle part of the connecting rod 5 is fixed with a fixed head 6, the lower end of the fixed head 6 is provided with a connecting mechanism 7, the connecting mechanism 7 comprises a connecting block 701, a rotating arm 702, a fixed block 703 and an embedded disc 704, the bottom of the lower end of the connecting block 701 is provided with the rotating arm 702, the lower end of the rotating arm 702 is movably connected with the fixed block 703, the inner side of the fixed block 703 is provided with the embedded disc 704, the connecting block 701 forms a side-rotating structure through the rotating arm 702 and the fixed block 703, the connecting block 701 is distributed along the central line of the fixed head 6, a user can insert the embedded disc 704 through a rod body, the embedded disc 704 fixes the rod body, the detection height of the connecting rod 5 is improved through the rod body, the user can detect a high-distance concrete wall surface, when the user needs to place the connecting rod 5 in, the effect of lateral rotation of the fixing head 6 is achieved, and the fixing head 6 is distributed along the central axis of the connecting rod 5, so that the overall stability is improved;
the bottom laminating of connecting rod 5 has slide 9, the bottom laminating of ultrasonic detection probe 3 has pad 8, slide 9 laminates each other along the bottom of connecting rod 5, and for gluing between slide 9 and the connecting rod 5, when connecting rod 5 and wall body effect laminating, through slide 9, can reduce the coefficient of friction between this connecting rod 5 and the wall body, be convenient for follow-up pad 8 that drags carries out the ultrasonic detection crack many times to this wall, improve the accuracy of data, a concrete crack detection device's control method, control method adopts P L C to realize control to concrete crack detection device.
The working principle is as follows: for the concrete crack detection device and the control method thereof, firstly, when the connecting rod 5 is attached to the wall body effect, the friction coefficient between the connecting rod 5 and the wall body can be reduced through the sliding plate 9, the subsequent dragging of the pasting disc 8 for carrying out ultrasonic crack detection on the wall surface for a plurality of times is facilitated, meanwhile, a user can insert the embedding disc 704 through the rod body, the embedding disc 704 fixes the rod body, the detection height of the connecting rod 5 is increased through the rod body, the requirement of the user for detecting the concrete wall surface with high distance is met, when the user needs to place the connecting rod 5 in a multi-angle manner, the fixing head 6 can rotate by swinging the rotating arm 702 and the rotating arm 702, the body 1 reflects the compressive strength of the concrete by utilizing the mutual relation between the ultrasonic propagation speed and the rebound value and the compressive strength of the concrete, and the wave amplitude value during the time sound of the ultrasonic wave propagation in the concrete, The change of frequency value calculates the crack depth, confirms the position of inside crack, shows the testing data through display screen 105 and supplies the operator to observe the record to when holding organism 1, the accessible holds handle 103 department, holds this organism 1, and handle 103 department adopts cushion layer 104 to carry out the outside protection, can improve the coefficient of friction of holding the middle hand portion, gives the more comfortable experience of holding of user simultaneously.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a concrete crack detection device, includes organism (1) and fixed head (6), its characterized in that: the utility model discloses a machine body, including organism (1), the upper end both sides of organism (1) are provided with spring line (2), and the end of spring line (2) is fixed with ultrasonic detection probe (3), the upper end top distribution of ultrasonic detection probe (3) has and draws handle (4), and the inboard middle part of ultrasonic detection probe (3) runs through has connecting rod (5), the middle part outer wall of connecting rod (5) is fixed with fixed head (6), and the lower extreme of fixed head (6) is provided with coupling mechanism (7), the bottom laminating of connecting rod (5) has slide (9), the bottom laminating of ultrasonic detection probe (3) has pad (8).
2. The concrete crack detection device of claim 1, wherein: the machine body (1) is electrically connected with the ultrasonic detection probe (3) through the spring wire (2), and the machine body (1) is elastically connected with the ultrasonic detection probe (3).
3. The concrete crack detection device of claim 1, wherein: organism (1) is including protective housing (101), side protecting cover (102), handle (103), cushion layer (104), display screen (105) and operating panel (106), and protective housing's (101) outer wall both sides laminating has side protecting cover (102), the inboard middle part of side protecting cover (102) is provided with handle (103), and the inner wall laminating of handle (103) has cushion layer (104), protective housing's (101) inboard middle part distributes and has display screen (105), and the both sides of display screen (105) are provided with operating panel (106).
4. A concrete crack detection device as claimed in claim 3, characterized in that: the handle (103) and the cushion layer (104) are mutually attached, and the handle (103) is distributed along the center line of the protective shell (101).
5. The concrete crack detection device of claim 1, wherein: the connecting mechanism (7) comprises a connecting block (701), a rotating arm (702), a fixing block (703) and an embedded disc (704), wherein the rotating arm (702) is arranged at the bottom of the lower end of the connecting block (701), the fixing block (703) is movably connected to the tail end of the lower end of the rotating arm (702), and the embedded disc (704) is arranged on the inner side of the fixing block (703).
6. The concrete crack detection device of claim 5, wherein: the connecting block (701) forms a side-rotating structure through the rotating arm (702) and the fixing block (703), and the connecting block (701) is distributed along the center line of the fixing head (6).
7. The concrete crack detection device of claim 1, wherein: the ultrasonic detection probe (3) and the connecting rod (5) are of a detachable structure, and the ultrasonic detection probe (3) is symmetrically distributed along the vertical central axis of the connecting rod (5).
8. The concrete crack detection device of claim 1, wherein: the sliding plates (9) are mutually attached along the bottoms of the connecting rods (5), and the sliding plates (9) are hinged to the connecting rods (5).
9. A control method of a concrete crack detection device is characterized in that the control method adopts P L C to control the concrete crack detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010399680.4A CN111413405A (en) | 2020-05-09 | 2020-05-09 | Concrete crack detection device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010399680.4A CN111413405A (en) | 2020-05-09 | 2020-05-09 | Concrete crack detection device and control method thereof |
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| CN111413405A true CN111413405A (en) | 2020-07-14 |
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| CN202010399680.4A Pending CN111413405A (en) | 2020-05-09 | 2020-05-09 | Concrete crack detection device and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960073A (en) * | 2021-10-20 | 2022-01-21 | 武汉诚源宏景制管有限公司 | Monitoring devices with slip casting pipe slip casting is used |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007101192A (en) * | 2005-09-30 | 2007-04-19 | Sado Electronics:Kk | Flaw detector of rail |
| KR20080111629A (en) * | 2007-06-19 | 2008-12-24 | 에스큐엔지니어링(주) | Portable ultrasonic apparatus for measuring concrete crack depth |
| JP2013088305A (en) * | 2011-10-19 | 2013-05-13 | Kanagawa Noriyo | Method and device for detecting crack of concrete structure |
| CN108226295A (en) * | 2018-01-26 | 2018-06-29 | 东北大学 | A kind of ultrasonic concrete penetration of fracture detection device and its method of work |
| CN207946398U (en) * | 2017-12-24 | 2018-10-09 | 江西聚闻工程技术有限公司 | A kind of hand propelled building cracks detector |
| CN208140057U (en) * | 2018-04-26 | 2018-11-23 | 河南省公路工程局集团有限公司 | A kind of bridge tunnel penetration of fracture measuring instrument |
| CN209589010U (en) * | 2019-05-15 | 2019-11-05 | 金峥吉 | A kind of water conservancy inspection gap detection device |
| CN210015084U (en) * | 2019-06-14 | 2020-02-04 | 李勤良 | Portable tunnel crack observation equipment |
-
2020
- 2020-05-09 CN CN202010399680.4A patent/CN111413405A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007101192A (en) * | 2005-09-30 | 2007-04-19 | Sado Electronics:Kk | Flaw detector of rail |
| KR20080111629A (en) * | 2007-06-19 | 2008-12-24 | 에스큐엔지니어링(주) | Portable ultrasonic apparatus for measuring concrete crack depth |
| JP2013088305A (en) * | 2011-10-19 | 2013-05-13 | Kanagawa Noriyo | Method and device for detecting crack of concrete structure |
| CN207946398U (en) * | 2017-12-24 | 2018-10-09 | 江西聚闻工程技术有限公司 | A kind of hand propelled building cracks detector |
| CN108226295A (en) * | 2018-01-26 | 2018-06-29 | 东北大学 | A kind of ultrasonic concrete penetration of fracture detection device and its method of work |
| CN208140057U (en) * | 2018-04-26 | 2018-11-23 | 河南省公路工程局集团有限公司 | A kind of bridge tunnel penetration of fracture measuring instrument |
| CN209589010U (en) * | 2019-05-15 | 2019-11-05 | 金峥吉 | A kind of water conservancy inspection gap detection device |
| CN210015084U (en) * | 2019-06-14 | 2020-02-04 | 李勤良 | Portable tunnel crack observation equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960073A (en) * | 2021-10-20 | 2022-01-21 | 武汉诚源宏景制管有限公司 | Monitoring devices with slip casting pipe slip casting is used |
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