CN112318721A - Self-stress concrete mixer and visual detection method - Google Patents
Self-stress concrete mixer and visual detection method Download PDFInfo
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- CN112318721A CN112318721A CN202011106146.6A CN202011106146A CN112318721A CN 112318721 A CN112318721 A CN 112318721A CN 202011106146 A CN202011106146 A CN 202011106146A CN 112318721 A CN112318721 A CN 112318721A
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- 238000001514 detection method Methods 0.000 title claims abstract description 9
- 230000000007 visual effect Effects 0.000 title claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 114
- 238000002156 mixing Methods 0.000 claims abstract description 80
- 239000000203 mixture Substances 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 238000010191 image analysis Methods 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 49
- 239000010959 steel Substances 0.000 claims description 49
- 239000003921 oil Substances 0.000 claims description 31
- 238000003466 welding Methods 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 12
- 239000010720 hydraulic oil Substances 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000011800 void material Substances 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 6
- 230000003631 expected effect Effects 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 239000002174 Styrene-butadiene Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 238000013178 mathematical model Methods 0.000 claims description 3
- 239000011115 styrene butadiene Substances 0.000 claims description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 3
- 239000008030 superplasticizer Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 238000005286 illumination Methods 0.000 claims 1
- 238000009827 uniform distribution Methods 0.000 claims 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 7
- 235000017491 Bambusa tulda Nutrition 0.000 description 7
- 241001330002 Bambuseae Species 0.000 description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 7
- 239000011425 bamboo Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000004445 quantitative analysis Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
- B28C5/20—Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0806—Details; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
- B28C5/20—Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers
- B28C5/2045—Parts or components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
- B28C5/20—Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers
- B28C5/2045—Parts or components
- B28C5/2054—Drums, e.g. provided with non-rotary mixing blades
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
-
- 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
- G01N21/84—Systems specially adapted for particular applications
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8411—Application to online plant, process monitoring
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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
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8472—Investigation of composite materials
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- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
本发明公开了一种自应力混凝土搅拌机及可视化检测方法，克服了目前存在的拌合物搅拌不充分、凝结时间过快未能及时取出的问题，搅拌机包括外壳部件、搅拌部件、动力部件、图像采集部件与图像分析部件；外壳部件包括搅拌筒与支撑架；搅拌部件包括传动齿轮与搅拌轴；搅拌部件安装在搅拌筒的右腔，搅拌轴从搅拌筒右筒壁的中心处伸出，搅拌部件通过安装在搅拌轴伸出端上的传动齿轮与位于支撑架上的动力部件连接；外壳部件通过搅拌筒上的2个齿圈与动力部件的2个驱动齿轮相连接，图像采集部件安装在搅拌筒的左腔，图像采集部件与图像分析部件连接；外壳部件、图像采集部件的控制杆、图像分析部件安装在支撑架上。本发明还公开了拌合物质量的检测方法。
The invention discloses a self-stressing concrete mixer and a visual detection method, which overcomes the existing problems that the mixture is not fully stirred and the setting time is too fast and cannot be taken out in time. The mixer includes shell parts, stirring parts, power parts, images The acquisition part and the image analysis part; the shell part includes the mixing drum and the support frame; the mixing part includes the transmission gear and the mixing shaft; The part is connected with the power part located on the support frame through the transmission gear installed on the extension end of the stirring shaft; the shell part is connected with the two drive gears of the power part through the two ring gears on the mixing drum, and the image acquisition part is installed in the In the left cavity of the mixing drum, the image acquisition part is connected with the image analysis part; the shell part, the control rod of the image acquisition part, and the image analysis part are installed on the support frame. The invention also discloses a detection method for the quality of the mixture.
Description
Technical Field
The invention relates to a fiber concrete mixing device, in particular to a self-stress concrete mixer and a visual detection method.
Background
The self-stress concrete is concrete which is prepared by aluminate self-stress cement and can self-expand to generate stress, and the self-stress is derived from the expansion of the concrete. Compared with common concrete, the self-stress concrete has the advantages of high self-stress value, good processing performance, good impermeability and air tightness and the like. The self-stress concrete is mainly applied to self-stress steel bar (steel wire mesh) concrete (mortar) pressure pipes. According to different grades of aluminate self-stress cement, cement pipes with different calibers can be produced. As long as the production is carried out according to the ministerial standard, products with basically consistent performance can be obtained, and the qualification rate of the pipe is high. However, in the stirring process of the self-stress concrete, the problems that the mixture is not sufficiently stirred, the setting time is too fast and the mixture cannot be taken out in time and the like exist, and the stirring quality and the stirring time of the self-stress concrete mixture in the stirrer are difficult to control at the moment. And when self-stress concrete mixture stirs in the inside of confined mixing section of thick bamboo, can't clearly observe the workability situation of the inside concrete mixture of mixing section of thick bamboo from the outside to specific churning time can not be confirmed, concrete judgement when self-stress concrete mixture stirs to the expected effect, brought a great deal of inconvenience for the user.
Disclosure of Invention
The invention aims to solve the technical problems that self-stress concrete mixtures are not sufficiently stirred and the self-stress concrete mixtures are too quick to be taken out in time in the prior art, and provides a self-stress concrete mixer and a visual detection method.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme: the self-stress concrete mixer comprises a shell component, a mixing component, a power component, an image acquisition component and an image analysis component;
the shell part comprises a stirring drum and a supporting frame;
the stirring component comprises a transmission gear and a stirring shaft;
the stirring component is arranged in a right cavity of the stirring drum, the right end of the stirring shaft extends out of the center of the right drum wall of the stirring drum, and the stirring component is connected with a power component arranged on the support frame through a transmission gear arranged at the extending end of the stirring shaft; the shell part is connected with 2 driving gears with the same structure in the power part through 2 gear rings with the same structure, the image acquisition part is arranged in a left cavity of the mixing drum, and the image acquisition part is connected with the image analysis part; the shell component, the shutter button, the control rod and the image analysis component in the image acquisition component are arranged on the support frame, and the hydraulic station in the image acquisition component is arranged below the support frame in a welding mode or by adopting bolts.
The shell part in the technical scheme also comprises a hoisting nose;
the hoisting nose is a steel circular ring-shaped structural member, the diameter of the outer ring of the circular ring-shaped structural member is 60mm, the diameter of the inner ring of the circular ring-shaped structural member is 40mm, and the thickness of the circular ring-shaped structural member is 10 mm; the hoisting nose is arranged at two ends of the outer surface of the top cylinder wall of the mixing cylinder in a welding mode.
The technical scheme in the churn be cylindrical steel hollow tube spare, the both ends cover of churn is equipped with the ring gear that the structure is the same, the center department of churn left and right section of thick bamboo wall all is provided with circular through-hole, be provided with the feed inlet that is used for from stress concrete mixture material entering of rectangle arc surface on the section of thick bamboo wall of churn top, bottom, be used for the CCD camera to stretch out and abluent washing mouth and be used for the discharge gate that takes out from stress concrete mixture, specifically say: a feed port for feeding the self-stress concrete mixture material is positioned on the cylinder wall on the right side of the top end of the mixing cylinder, and a steel feed port cover plate with a rectangular arc surface is installed on the feed port by adopting bolts; the cleaning port for the CCD camera to extend out and clean is positioned on the cylinder wall on the left side of the top end of the mixing cylinder; a steel cleaning opening cover plate with a rectangular arc surface is covered on the cleaning opening by bolts; a discharge gate that is used for taking out from stress concrete mixture is located the section of thick bamboo wall on churn bottom right side, and it has the discharge gate apron of the steel of rectangle arc surface to adopt the bolt to cover on the discharge gate.
The stirring component in the technical scheme also comprises a helical blade and a stirring plate; the helical blade is a steel plate helical structural member, and the axial pitch of the helical blade is 250 mm; the stirring plate is a rectangular steel flat plate structural member; the stirring shaft is a steel straight rod type structural member, and the circular cross section of the stirring shaft is an equal section; the transmission gear is a standard belt gear; the stirring shaft is arranged in a circular rolling bearing at the circle center of the right wall of the stirring cylinder, the transmission gear is arranged at the right end of the stirring shaft positioned at the outer side of the right wall of the stirring cylinder, the helical blade is arranged at the left end of the stirring shaft positioned in the stirring cylinder in a welding mode, and the stirring plate is arranged on the stirring shaft positioned in the stirring cylinder and at the right side of the helical blade in an up-and-down symmetrical mode in the welding mode.
The power component in the technical scheme also comprises a driving gear, a driving motor, a rotating shaft, a transmission belt and a circular rolling bearing; the driving motor is a YX3 series high-efficiency three-phase asynchronous motor; the rotating shaft is a straight rod structural member with a steel circular cross section; the transmission belt is an A-shaped tooth-shaped transmission belt with the model number of 6290/17-300; the left end of rotation axis is installed on the support frame through the axle support, the right-hand member of rotation axis is connected with driving motor's output, driving motor installs on the support frame, driving gear fixed mounting is at the right-hand member of rotation axis, 2 drive gear that the structure is the same are installed at the both ends department of the rotation axis between axle support and driving gear, and be located between churn bottom and support frame, 2 drive gear that the structure is the same is connected with 2 ring gear meshing that the structure is the same on the churn, the driving gear is connected with the drive gear in the stirring part through driving belt, the centre of a circle department of right side section of thick bamboo wall lateral surface in the churn of ring welded fastening in antifriction bearing, antifriction bearing welded fastening is on the top that the churn supported, antifriction bearing suit.
The image acquisition part in the technical scheme further comprises a CCD camera, a mechanical arm, a rotating base, an upper control rod of the mechanical arm and a lower control rod of the mechanical arm; the CCD camera adopts a British AVDOR high-sensitivity CCD camera, and illuminating lamps are arranged around a lens in the CCD camera; the mechanical arm is a parallelogram frame structural member formed by hinging 4 steel rods; the rotating base is a hollow rotating platform with the model number of HT 60-5; the shutter button selects a camera button, namely a Nikon DF button; the control rod is an FJ9S three-axis industrial handle; the upper control rod and the lower control rod of the mechanical arm are GYCD-110/750 control rods which drive piston rods therein to move telescopically through hydraulic oil; the hydraulic station is a hydraulic station with the model number of SD-2-5.5;
the fixed end of the CCD camera is arranged at the right end of a No. 1 rod in the mechanical arm and is rotationally connected with the right end of the No. 1 rod, an upper control rod of the mechanical arm is arranged between the left end of the No. 1 rod and the top end of an inclined rod of the fixed end of the CCD camera, a lower control rod of the mechanical arm is arranged between the bottom end of the inclined rod in the No. 2 rod and the left end of a No. 3 rod, the left end, namely the fixed end, of the No. 3 rod in the mechanical arm is arranged on a rotating base which is arranged in a circular through hole on the, the lower control rod of the mechanical arm is connected with the hydraulic station through an oil pipe, the shutter button is arranged in a groove at the top end of the control rod and is connected with a control mechanism of a shutter of the CCD camera through a signal wire, a signal output port A of the control rod is connected with a signal input port of an electric appliance box of the hydraulic station through a signal wire, and a signal output port B of the control rod is connected with a signal input port of an encoder of the servo motor through a signal wire.
The mechanical arm in the technical scheme is a parallelogram frame structural member formed by hinging a No. 1 rod, a No. 2 rod, a No. 3 rod and a No. 4 rod; the No. 1 rod is a steel plate rod; the left and right ends of the No. 1 rod are provided with a No. 1 left circular through hole and a No. 1 right circular through hole, the structures of the No. 1 left circular through hole and the No. 1 right circular through hole are the same, the No. 1 left circular through hole is used for being hinged with the No. 4 rod, the No. 1 right circular through hole is used for being connected with the CCD camera, and the No. 1 middle circular through hole is used for being hinged; the No. 2 rod consists of a straight rod and an inclined rod, the width and the thickness of the straight rod and the inclined rod are equal, and the included angle between the straight rod and the inclined rod is 135 degrees; the upper end and the lower end of the straight rod of the No. 2 rod are provided with a straight rod upper circular through hole and a straight rod lower circular through hole, the straight rod upper circular through hole and the straight rod lower circular through hole are identical in structure and are used for being connected with the No. 1 rod, the straight rod lower circular through hole is used for being hinged with the No. 3 rod, and the bottom end of the diagonal rod is provided with a diagonal rod circular through hole which is; the No. 3 rod and the No. 1 rod are steel plate type rod pieces with the same length, width and thickness; the left end of the No. 3 rod is provided with a base which fixes the No. 3 rod on a hollow rotating platform of a rotating base in a welding mode, the right end of the No. 3 rod is provided with a No. 3 right circular through hole which is used for being hinged with the lower end of a straight rod in the No. 2 rod, and the middle part of the No. 3 rod is provided with a No. 3 middle circular through hole which is used for being hinged with the lower end of a No. 4 rod; the No. 4 rod is a straight rod piece made of steel, and the upper end and the lower end of the No. 4 rod are provided with a No. 4 upper circular through hole which is hinged with the left end of the No. 1 rod and a No. 4 lower circular through hole which is hinged with the middle part of the No. 3 rod, wherein the No. 4 upper circular through hole and the No. 4 lower circular through hole are identical in structure; the No. 4 rod is hinged with the No. 1 left circular through hole in the No. 1 rod through the No. 4 upper circular through hole, and the No. 4 rod is hinged with the No. 3 middle circular through hole of the No. 3 rod through the No. 4 lower circular through hole; the circular through hole on the straight rod of the No. 2 rod is hinged with the circular through hole in the No. 1 rod, and the circular through hole under the straight rod of the No. 2 rod is hinged with the right circular through hole of the No. 3 rod; no. 4 pole and No. 2 pole are parallel to each other, and No. 1 pole and No. 3 pole are parallel to each other.
The image analysis component comprises a display screen and an image comparison analyzer; the display screen is an LED electronic display screen, the display screen is arranged on the supporting frame, and an image input port of the display screen is connected with an image output port of a CCD camera of the image acquisition component by a signal line; the image contrast analyzer adopts a DS-5M microscopic image analyzer, the image contrast analyzer is arranged on the supporting frame, an image input port of the image contrast analyzer is connected with an image output port of the CCD camera of the image acquisition component through a signal line, and an image output port of the image contrast analyzer is connected with an image input port of the display screen through a signal line.
The visual detection method adopting the self-stress concrete mixer comprises the following steps:
1. image acquisition
1) Adding self-stress sulphoaluminate cement, medium sand, fine stone, water, styrene-butadiene emulsion and a third-generation poly-carboxylic acid superplasticizer into a stirring cylinder from a feed inlet according to the mass ratio of 1:1.2:0.7:0.35 (5.8-6.3%);
2) the power supply of the stirrer is electrified, and the stirring drum starts to rotate;
3) starting a CCD camera in the mixing drum, and controlling the CCD camera to acquire self-stress concrete mixture mixing images in the mixing drum through a control rod on a support frame;
2. image analysis
1) Region partitioning
The image contrast analyzer displays the image collected by the CCD camera on a display screen, and divides the image into x and y directionsi(i is 1-100) x yj(j is 1-100) total 100 × 100 regions;
the initial set original image with good cohesive state of the material is also divided into x and y axis directionsi(i is 1-100) x yj(j is 1-100) total 100 × 100 regions;
2) matrix void fraction calculation
The image contrast analyzer calculates each small block xi(i is 1-100) x yj(j is 1-100) area of matrix cavity area S (x)i，yj) Statistical matrix voidage as
3) mixture stirring quality judgment
The image contrast analyzer compares the original image with good cohesive state with 100 × 100 areas of the image collected by the CCD camera, and records the images
The mathematical model of the image analysis component is calculated by the formula
When the P is more than or equal to 95 percent, judging that the self-stress concrete mixture is stirred to achieve the expected effect;
when P is less than 95%, entering circulation, continuously stirring and collecting images for analysis until P reaches 95%; in the formula: p is the similarity;
3. judgment of completion or non-completion of agitation
And when the matrix voidage K is less than or equal to 1 percent, the requirement is met, after the image contrast analyzer successfully judges, the self-stress concrete mixer is stopped, and the self-stress concrete mixture achieves the expected mixing effect.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the self-stress concrete mixer, the self-stress concrete mixture can be stirred in the barrel to achieve the expected stirring effect through the image comparison system, cement, medium sand and fine stones are uniformly distributed in the concrete mixture, and the problem that the stirring quality of self-stress concrete is difficult to control is solved;
2. the self-stress concrete mixer disclosed by the invention automatically distributes reasonable mixing time according to different raw material quantities until the mixing quality reaches the expected effect, and also solves the problem that the proper mixing time cannot be determined specifically; when the self-stress concrete mixer is used, when concrete mixture is mixed in the mixing cylinder, direct observation and quantitative analysis of the mixture can be realized on the outside;
3. in the stirring process of the self-stress concrete mixer, the CDD camera can be manually operated through the control rod to move and snapshot, and the conditions such as self-stress concrete cavities and the like can be observed through the display screen; when cement, medium sand and fine stone are uniformly distributed in the concrete mixture, the display lamp flickers, and the stirring quality can be ensured.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is an isometric projection of a self-stressing concrete mixer structure according to the present invention;
FIG. 2 is a front view of the structural components of a self-stressing concrete mixer according to the present invention;
FIG. 3 is a top view of a self-stressing concrete mixer structure according to the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
FIG. 5 is an isometric projection view of a CCD camera structure employed in a self-stressing concrete mixer according to the present invention;
FIG. 6 is a right side view of a CCD camera structure employed in a self-stressing concrete mixer according to the present invention;
FIG. 7 is a schematic sectional view of an image analysis component of a self-stressed concrete mixer according to the present invention;
FIG. 8 is a flow chart illustrating the operation of a self-stressing concrete mixer according to the present invention;
FIG. 9 is a front view of the structural components of the robotic arm employed in a self-stressing concrete mixer in accordance with the present invention;
in the figure: 1. the device comprises a mixing drum, a lifting nose, a feeding hole, a cleaning hole, a bolt, a CCD camera, a mechanical arm, a rod 7-1.1, a rod 7-2.2, a rod 7-3.3, a rod 7-4.4, a rotating base 8, an image contrast analyzer 9, a circular rolling bearing 10, a spiral blade 11, a mixing plate 12, a discharge hole 13, a driving gear 14, a driving gear 15, a driving gear 16, a driving motor 17, a rotating shaft 18, a transmission belt 19, a transmission gear 20, a mixing shaft 21, a hydraulic station 22, a display screen 23, a support frame 23, a shutter button 24, a lighting lamp 25, a control rod 26, a gear ring 27, a lens 28, a mixing drum support 29, a mixing drum support 30, a lower mechanical arm control rod 31, an upper mechanical arm control rod and a servo motor 32.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
referring to fig. 1 to 4, the self-stress concrete mixer includes a housing member, a mixing member, a power member, an image capturing member, and an image analyzing member.
The shell part comprises a mixing drum 1, a hoisting nose 2 and a support frame 23.
The mixing drum 1 is a cylindrical steel hollow drum piece, the thickness of the drum wall is 3 mm-5 mm, the diameters of the left and right drum walls are 1 m-1.2 m, and the length of the drum is 2 m; circular through holes are formed in the centers of the left and right side cylinder walls of the mixing cylinder 1 and used for enabling the rotary base 8 and the mixing shaft 20 to extend into the mixing cylinder 1; be provided with three rectangle arc surface openings on the section of thick bamboo wall of the top of 1 symmetry of churn, bottom, be feed inlet 3, washing mouth 4, discharge gate 13 in proper order, specifically say:
the feed inlet 3 is used for feeding self-stress concrete mixture materials, and the feed inlet 3 is positioned on the wall of the right upper part (right side of the top end) of the mixing drum 1; a steel feed inlet cover plate with a rectangular arc surface with the length of 60mm, the width of 40mm and the thickness of 5mm is covered on the feed inlet 3 by adopting a bolt 5, and the bolt 5 adopts a standard part of GB/T5782-;
the cleaning port 4 is used for extending out the CCD camera 6, so that the CCD camera 6 can be conveniently cleaned, and the cleaning port 4 is positioned on the wall of the stirring cylinder 1 above the left side (the left side of the top end); a steel cleaning opening cover plate with a rectangular arc surface with the length of 60mm, the width of 40mm and the thickness of 5mm is covered on the cleaning opening 4 by adopting a bolt 5, and the bolt 5 adopts a standard part of GB/T5782-;
the discharge port 13 is used for taking out self-stress concrete mixtures, the discharge port 13 is positioned on the cylinder wall at the lower right side (right side of the bottom end) of the mixing drum 1, a steel discharge port cover plate with a rectangular arc surface with the length of 80mm, the width of 60mm and the thickness of 5mm is covered on the discharge port 13 by adopting a bolt 5, and a standard part of a GB/T5782-2016 hexagon head bolt is adopted by adopting the bolt 5;
the support frame 23 is a steel frame, the four support legs are L-shaped steel, the model of the L-shaped steel is L300 multiplied by 100 multiplied by 11.5 multiplied by 16, namely the sizes are h300mm, b100mm, T11.5mm and T16 mm. The height of the four supporting legs is 1 m. The support frame mesa is the steel panel, and the size is 2.8m 2m, and thickness is 10mm, and the panel sets up 400mm (be on a parallel with the minor face direction) x 800mm (be on a parallel with the long edge direction) long limit apart from 0.6m department and sets up 100mm (be on a parallel with the minor face direction) x 600mm (be on a parallel with the long edge direction) opening, and this opening long limit is apart from the long limit of support frame mesa 30mm, is located the churn discharge gate 13 under for the ejection of compact of discharge gate 13. As a mounting and supporting base for the mixing drum 1, the power component, the image acquisition component and the image analysis component.
The mixing drum 1 is a main body part in a self-stress concrete mixer and is used as a container for mixing concrete; gear rings 26 with the same structure are sleeved on the mixing drum 1 at a distance of 200mm from two ends, and 2 gear rings 26 with the same structure are meshed with 2 driving gears 14 with the same structure;
the hoisting nose 2 is a steel circular ring-shaped structural member, the diameter of the outer ring of the circular ring is 60mm, the diameter of the inner ring is 40mm, and the thickness is 10 mm. The device is used for moving and hoisting the mixing drum 1; the hoisting nose 2 is arranged at two ends of the outer surface of the top cylinder wall of the mixing cylinder 1 in a welding mode.
Referring to fig. 4, the stirring component includes a helical blade 11, a stirring plate 12, a transmission gear 19 and a stirring shaft 20.
The spiral blade 11 is a steel plate spiral structural member, the axial pitch of the spiral structural member is 250mm, the outer diameter of the axial circular projection is 60mm, the inner aperture is equal to the outer diameter of the stirring shaft 20, the thickness of the spiral blade 11 is 2mm, the length of the spiral blade 11 is smaller than that of the stirring shaft 20, and the spiral blade 11 is sleeved at the left end of the stirring shaft 20 extending into the stirring cylinder 1;
the stirring plate 12 is a rectangular steel plate, the length of the rectangular steel plate is 60mm, the width of the rectangular steel plate is 30mm, the thickness of the stirring plate 12 is 2mm, the stirring plate is arranged at the right end of a stirring shaft 20 extending into the stirring cylinder 1, and the helical blades 11 and the stirring plate 12 are used for stirring concrete in the cylinder.
The stirring shaft 20 is a steel straight rod type structural part with the length of 1.5m, and the circular cross-section diameter of the stirring shaft 20 is 20mm and is used as a driving part of the whole stirring part.
The transmission gear 19 is a standard belt gear with the addendum circle diameter of 224mm and the number of teeth of 30 and is used for transmitting the driving force to the stirring shaft 20;
the stirring shaft 20 is inserted into a circular through hole at the center of the right wall of the stirring cylinder 1, the transmission gear 19 is welded and fixed at the right end of the stirring shaft 20 positioned outside the stirring cylinder 1, the helical blade 11 is welded and installed at the left end of the stirring shaft 20 positioned in the inner cavity of the stirring cylinder 1, and the stirring plate 12 is installed on the stirring shaft 20 positioned on the right side of the helical blade 11 and positioned in the inner cavity of the stirring cylinder 1 in a welding mode.
Referring to fig. 4, the power unit includes 2 driving gears 14, driving gears 15, driving motors 16, rotating shafts 17, transmission belts 18 and circular rolling bearings 10 with the same structure.
The driving gear 14 is a standard gear with the diameter of a top circle of 224mm and the number of teeth of 30, and transmits the force of the rotating shaft 17 to the mixing drum 1;
the driving gear 15 is a standard belt gear with a top circle diameter of 224mm and a tooth number of 30, and transmits the force of the rotating shaft 17 to the transmission belt 18;
the driving motor 16 is a YX3 series high-efficiency three-phase asynchronous motor as a power supply device of the whole power component;
the rotating shaft 17 is a steel straight rod structural member with the length of 2.4m, and the cross section circle diameter of the long rod is 20mm and is used as a driving piece;
the transmission belt 18 is an A-shaped toothed transmission belt with the model number of 6290/17-300 and is used for transmitting the power on the rotating shaft 17 to the stirring shaft 20;
the left end of a rotating shaft 17 is installed on a supporting frame 23 through a shaft support, the right end of the rotating shaft 17 is connected with the output end of a driving motor 16, the driving motor 16 is installed on the supporting frame 23, a driving gear 15 is fixed on the rotating shaft 17 on the right side of a driving gear 14 on the right end, 2 driving gears 14 with the same structure are installed at two ends of the rotating shaft 17 between the shaft support and the driving gear 15 and are located between the bottom end of a stirring cylinder 1 and the working surface of the supporting frame 23, 2 driving gears 14 with the same structure are aligned and meshed with 2 gear rings 26 with the same structure on the stirring cylinder 1, and the driving gear 15 is connected with a transmission gear 19 in a stirring component through;
the ring rolling bearing 10 is composed of a ring and a rolling bearing. The ring is a steel ring with the diameter of 60mm at the outer circle, 30mm at the inner circle and 20mm in thickness. The circular ring is welded and fixed at the center of the outer side surface of the right side wall of the stirring cylinder 1; the rolling bearing is a deep groove ball bearing with the model 12, the inner diameter of the bearing with the model 12 is 60mm, the rolling bearing is welded and fixed at the top end of the stirring cylinder support 29, the rolling bearing is sleeved on the ring, and the rolling bearing and the ring are welded and connected; the single mixing drum support 29 consists of two steel plates. The steel plate has the dimensions of 1500mm in length, 20mm in width and 5mm in thickness. The bottom end of the mixing drum support 29 is welded on the table surface of the support frame 23;
the rotation direction of the stirring shaft 20 in the power component is opposite to the rotation direction of the stirring cylinder 1, and the rotation directions of the helical blade 11 and the stirring plate 12 in the stirring component are opposite to the rotation direction of the stirring cylinder 1, so that the reverse rotation of the helical blade 11 and the stirring plate 12 and the stirring cylinder 1 is realized, and the concrete is stirred more fully.
Referring to fig. 1 to 6, the image capturing unit includes a CCD camera 6, a mechanical arm 7, a rotary base 8, a control rod 25, a shutter button 24, an upper control rod 31 of the mechanical arm, a lower control rod 30 of the mechanical arm, and a hydraulic station 21;
the rotating base 8 is a hollow rotating platform with the model number of HT60-5, and the hollow rotating platform consists of a turntable, an induction sheet, a base, a photoelectric switch and a speed reduction part. Through motor drive, realize that angular adjustment is automatic, rotating base 8 installs in the circular through-hole on churn 1 left side wall, and rotary platform's carousel part is hollow structure, and hollow structure makes things convenient for passing through and the installation of circuit, and servo motor 32 chooses for use the sigma 7 series servo motor that the model is SGM7J for use, including rotation axis, stator, rotor and encoder, servo motor 32's rotation axis and the fixed suit of the part that slows down of hollow rotary platform are connected.
The shutter button 24 is a camera button, namely a Nikon DF button, is connected with a shutter extension line of the CCD camera 6 and is used for controlling the CCD camera 6 to shoot a picture of the concrete stirred in the stirring cylinder 1.
The upper control rod 31 of the mechanical arm and the lower control rod 30 of the mechanical arm are control rods with the model number of GYCD-110/750, the original height of the control rods is 450mm, and the size of the control rods is 610x165x82 mm; the control rod comprises a hydraulic oil cylinder and a piston rod, an oil inlet on the hydraulic oil cylinder is connected with an oil outlet of the hydraulic station 21 through an oil pipe, an oil outlet of the hydraulic oil cylinder is connected with an oil return port of the hydraulic station 21 through an oil pipe, and pressure difference is generated at two ends of the hydraulic oil cylinder by means of pressure oil provided by the oil inlet and the oil outlet of the hydraulic station 21 to push the control rod to extend and compress; namely, the piston rod is pushed to extend and retract through pressure oil, so that the mechanical arm 7 is driven to move up, down, left and right.
The CCD camera 6 adopts a British AVDOR high-sensitivity CCD camera, illuminating lamps 28 are arranged around a lens 27 in the CCD camera 6, and the illuminating lamps 28 are AF auxiliary illuminating lamps; the CCD camera 6 is used for collecting images under the internal condition of the mixing drum 1;
referring to fig. 9, the robot arm 7 includes a rod No. 1 7-1, a rod No. 2 7-2, a rod No. 3, a rod No. 7-3, and a rod No. 4, and the robot arm 7 is a parallelogram robot arm main body formed by hinging 4 steel rods, and belongs to a frame structural member.
The No. 1 rod 7-1 is a steel plate rod with the length of 300mm, the width of 30mm and the thickness of 2 mm; the left end and the right end of the No. 1 rod 7-1 are provided with a No. 1 left circular through hole and a No. 1 right circular through hole which are 10mm in diameter, the middle part of the No. 1 rod 7-1 is provided with a No. 1 middle circular through hole which is 20mm in diameter, the No. 1 right circular through hole of the No. 1 rod 7-1 is used for being connected with the CCD camera 6, the No. 1 left circular through hole of the No. 1 rod 7-1 is used for being hinged with the No. 4 rod 7-4, the No. 1 right circular through hole of the No. 1 rod 7-1 is used for being connected with the CCD camera 6, and the No. 1 middle circular through hole of the No. 1 rod 7-1 is used for being hinged with;
the No. 2 rod 7-2 is a steel rod with the length of 600mm, the width of 30mm and the thickness of 2mm, the No. 2 rod 7-2 is composed of a straight rod and an inclined rod, the width and the thickness of the straight rod and the inclined rod are equal, and the included angle between the straight rod and the inclined rod is 135 degrees; the upper and lower ends of the straight rod in the No. 2 rod 7-2 are provided with a straight rod upper circular through hole and a straight rod lower circular through hole which have the diameters of 20mm, the bottom end of the diagonal rod is provided with a diagonal rod circular through hole which has the diameter of 10mm, the upper and lower circular through holes of the upper and lower ends of the straight rod are respectively used for being hinged with the No. 1 rod 7-1 and the No. 3 rod 7-3, and the diagonal rod circular through hole at the bottom end of the diagonal rod is used for being hinged with the lower control rod 30 of the mechanical arm;
the No. 3 rod 7-3 and the No. 1 rod 7-1 are steel plate type rod members with the length of 300mm, the width of 30mm and the thickness of 2 mm; the left end of the No. 3 rod 7-3 is fixed on the rotating base 8 in a welding mode, the right end of the No. 3 rod 7-3 is provided with a No. 3 right circular through hole with the diameter of 10mm, the middle part of the No. 3 rod 7-3 is provided with a No. 3 middle circular through hole with the diameter of 10mm, the No. 3 right circular through hole of the No. 3 rod 7-3 is used for being hinged with the No. 2 rod 7-2, and the circular through hole in the middle part of the No. 3 rod 7-3 is used for being hinged with the No. 4 rod 7-4;
the No. 4 rod 7-4 is a steel rod with the length of 600mm and the diameter of a circular section of 10mm, the upper end and the lower end of the No. 4 rod 7-4 are provided with a No. 4 upper circular through hole and a No. 4 lower circular through hole with the diameter of 10mm, and the No. 4 upper circular through hole and the No. 4 lower circular through hole are used for being hinged with the left end of the No. 1 rod 7-1 and the middle part of the No. 3 rod 7-3;
referring to fig. 4 and 9, an upper mechanical arm control rod 31 is arranged between the left end of the rod 7-1 No. 1 and the top end of the diagonal rod at the fixed end of the CCD camera 6, a lower mechanical arm control rod 30 is arranged between the bottom end of the diagonal rod in the rod 7-2 No. 2 and the left end of the rod 7-3 No. 3, the upper mechanical arm control rod 31 and the lower mechanical arm control rod 30 are connected with an oil inlet and an oil outlet of the hydraulic station 21 through high-pressure oil pipes, and are driven by hydraulic oil supplied by the hydraulic station 21, and the mechanical arm 7 is driven to move up and down and left and right through the hydraulic.
The CCD camera 6 is fixedly arranged at the right end of a No. 1 rod 7-1 in the mechanical arm 7, the control rod 25 moves leftwards, the hydraulic station 21 drives the control rod 31 on the mechanical arm to stretch, and the lens of the CCD camera 6 moves downwards; the control rod 25 moves to the right, the hydraulic station 21 drives the control rod 31 on the mechanical arm to compress, and the lens of the CCD camera 6 moves upwards; the control rod 25 moves forwards, the hydraulic station 21 drives the lower control rod 30 of the mechanical arm to stretch, and the lens of the CCD camera 6 moves leftwards; the control rod 25 moves backwards, the hydraulic station 21 drives the lower control rod 30 of the mechanical arm to compress, and the lens of the CCD camera 6 moves rightwards; thereby realizing the positioning to a certain point on the plane space of the plane where the mechanical arm 7 is positioned; the control rod 25 rotates clockwise, the displacement signal is converted into an electric signal and transmitted to the servo motor 32, the servo motor 32 drives the rotating base 8 to rotate clockwise, and the lens of the CCD camera 6 rotates clockwise around the axis of the mixing drum 1; the control rod 25 rotates anticlockwise, the displacement signal is converted into an electric signal and transmitted to the servo motor 32, the servo motor 32 drives the rotating base 8 to rotate anticlockwise, and the lens of the CCD camera 6 rotates anticlockwise around the axis of the mixing drum 1; thereby enabling positioning to a certain point on the three-dimensional space inside the mixing drum 1.
The control rod 25 selects an FJ9S triaxial industrial handle, operates in a fingertip type, and is self-reset by a spring, and the rocking angle is as follows: about 25 degrees (XY axle), but triaxial arbitrary direction wide-angle operation, USB interface output is selected for the control lever 25 to select, and this FJ9S triaxial industrial handle has two signal output ports (signal output port A, signal output port B), and signal output port A is connected through the signal line with the signal input port of the electrical apparatus box of hydraulic pressure station 21, and control lever 25 moves about from beginning to end can change the signal of telecommunication into and transmit hydraulic pressure station 21, realizes that arm 7 and CCD camera 6 move about from top to bottom. The signal output port B is connected to a signal input port of an encoder of the servo motor 32 via a signal line, and the rotation of the control lever 25 can be converted into an electric signal and transmitted to the rotary base 8, thereby rotating the rotary base 8 and the CCD camera 6.
The high-speed electronic shutter of the CCD camera 6 is a full electromagnetic shutter, a control mechanism of the full electromagnetic shutter is composed of an electromagnet (an electromagnetic valve), the control mechanism is connected with a key switch of a shutter button 24 through a signal wire, the shutter button 24 is arranged at the top end of a control rod 25, and the shooting of the CCD camera 6 can be controlled through the shutter button 24. The mechanical arm 7 can be controlled to move up, down, left, right and rotate by controlling the forward, backward, left and right movement and rotation of the control rod 25, so that the CCD camera 6 can take pictures at different positions;
the hydraulic station 21 is a hydraulic station with the model number of SD-2-5.5; the hydraulic station is composed of a pump device, an integrated block or valve combination, an oil tank and an electric box. The pump device is provided with a motor and an oil pump, which are power sources of the hydraulic station and convert mechanical energy into power energy of hydraulic oil; the integrated block is formed by combining a hydraulic valve and a channel body and used for adjusting the direction, the pressure and the flow of hydraulic oil; the valve combination is that the plate valve is arranged on the vertical plate, and the rear pipe of the plate is connected with the vertical plate and has the same function as the manifold block; the oil tank is a semi-closed container welded by steel plates, and is also provided with an oil filter screen, an air filter and the like, and is used for storing oil, cooling the oil and filtering the oil; the electric box is a terminal board provided with an external lead. The hydraulic system can realize various specified actions by connecting the hydraulic station and the driving device (an oil cylinder or a motor) by oil pipes, and the hydraulic station 21 is arranged below the supporting frame 23 by welding or bolts.
The CCD camera 6 is positioned in the left cavity inside the mixing drum 1, the CCD camera 6 is fixed at the right end of a No. 1 rod 7-1 in the mechanical arm 7, a high-pressure oil pipe connected with an oil inlet and an oil outlet of a mechanical arm upper control rod 31 on the mechanical arm 7 and a mechanical arm lower control rod 30, and a shutter extension line of the CCD camera 6 extend out through a rotating base 8 in a circular through hole on the left side wall of the mixing drum 1, the high-pressure oil pipe is connected with an oil inlet and an oil outlet of a hydraulic station 21, the shutter extension line of the CCD camera 6 is connected with a shutter button 24 on a control rod 25, the control rod 25 is arranged on a support frame 23, a signal output port of the control rod 25 is connected with an electric box of the hydraulic station 21 through a signal output line A by controlling the control rod 25 to move left and right, an electric signal generated by the control rod, the hydraulic station 21 drives the adjusting mechanical arm 7 by conveying hydraulic oil through an oil pipe, and can control the mechanical arm 7 to move up, down, left, right and rotate so as to move the CCD camera 6; the shutter button 24 is disposed in a groove at the tip of the lever 25, and the shutter button 24 is connected to the shutter of the CCD camera 6 via an extension line to capture an image.
The image analysis means comprises a display screen 22 and an image contrast analyser 9.
The display screen 22 is an LED electronic display screen for displaying images and frequency distribution curves; the image contrast analyzer 9 is a DS-5M microscopic image analyzer for comparing and analyzing the image acquired by the CCD camera 6 with the original image; an image input port of the display screen 22 is connected with an image output port of the CCD camera 6 of the image acquisition part through a signal line, the image contrast analyzer 9 is installed on the support frame 23, an image input port of the image contrast analyzer 9 is connected with an image output port of the CCD camera 6 of the image acquisition part through a signal line, and an image output port of the image contrast analyzer 9 is connected with an image input port of the display screen 22 through a signal line.
The stirring component is arranged in a right cavity of the stirring cylinder 1 in the shell component, and the right end of a stirring shaft 20 in the stirring component extends out of the stirring cylinder 1 and is externally connected with a power component through a transmission gear 19; the image acquisition component is positioned in the left cavity of the mixing drum 1 in the shell component and is connected with the image contrast analyzer 9 of the image analysis component through a signal line; the housing part, the power part, the image acquisition part (the control lever 25 and the shutter button 24) and the image analysis part are mounted on the support frame 23 by welding or bolts, and the hydraulic station 21 is mounted below the support frame 23 by welding or bolts.
The image acquisition part in the left cavity of the mixing drum 1 in the self-stress concrete mixer is characterized in that a CCD (charge-coupled device) camera 6 is used for image capturing, the CCD camera 6 is fixed on a controllable mechanical arm 7 and is connected to an external control rod 25, the CCD camera 6 can rotate 360 degrees to adjust and observe and locally amplify and capture, and captured images are transmitted to an image analysis part for quantitative analysis. When this kind of self-stress concrete mixer stirs self-stress concrete mixture, control lever 25 operation CCD camera 6 gathered the image, can the direct observation mix state, through image analysis part quantitative analysis, ensures cement, middlings and fine stone evenly distributed in self-stress concrete mixture.
Referring to fig. 7 and 8, a method for detecting the quality of the self-stressed concrete mixture stirred by the self-stressed concrete mixer includes:
1. image acquisition
1) Adding 0.12 percent of self-stress sulphoaluminate cement, medium sand, fine stone, water, styrene-butadiene emulsion and a third-generation poly-carboxylic acid superplasticizer into a stirring cylinder 1 from a feed inlet 3 according to the mass ratio of 1:1.2:0.7:0.35 (5.8-6.3 percent);
2) the power supply of the stirrer is electrified, the stirring cylinder 1 starts to rotate,
3) starting a CCD camera 6 in a mixing drum 1 of the self-stress concrete mixer, controlling the capturing position of the CCD camera 6 through a control rod 25 on a support frame 23, and collecting a mixing image of a self-stress concrete mixture in the mixing drum 1;
2. image analysis
1) Region partitioning
The image contrast analyzer 9 displays the image collected by the CCD camera 6 on a display screen 22 on a support 23, and divides the image into x and y directionsi(i is 1-100) x yj(j is 1-100) total 100 × 100 regions; the initial set original image with good cohesive state of the material is also divided into x and y axis directionsi(i is 1-100) x yj(j is 1-100) total 100 × 100 regions;
2) matrix void fraction calculation
The image contrast analyzer 9 calculates each patch xi(i is 1-100) x yj(j is 1-100) area of matrix cavity area S (x)i，yj) Statistical matrix voidage as
3) mixture stirring quality judgment
The image contrast analyzer 9 compares the original image with good cohesive state with 100 × 100 areas of the image acquired by the CCD camera 6, and records the result
The mathematical model of the image contrast analyzer 9 is calculated as
When the P is more than or equal to 95 percent, judging that the self-stress concrete mixture is stirred to achieve the expected effect; when P is less than 95%, entering circulation, continuously stirring and collecting images for analysis until P reaches 95%; in the formula: p is the similarity;
3. judgment of completion or non-completion of agitation
And when the matrix voidage K is less than or equal to 1 percent, the requirement is met, after the image contrast analyzer 9 successfully judges, the self-stress concrete mixer is stopped, and the self-stress concrete mixture achieves the expected mixing effect.
Claims (9)
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