阅读说明：本技术 一种混凝土试块自动化生产检测系统及方法 (Automatic production detection system and method for concrete test block ) 是由 关宏生 王敏 王育新 张荣福 丁洪丹 于 2021-07-16 设计创作，主要内容包括：本发明提供一种混凝土试块自动化生产检测系统及方法,包括自动配料系统、自动喷淋系统和自动养护系统。自动配料系统包括搅拌机、料仓、储液罐和混凝土压力检测仪；搅拌机的下部设有称重传感器；由控制装置根据设定的材料配比控制各阀门的开启和关闭,根据压力检测仪检测的压力值计算出混凝土的砂率值,根据检测数值,以及骨架密实型混凝土配比设计原理,进而分析混凝土配比中粗骨料堆积密度达到最大,空隙率降至最小,得到最佳配比,根据最佳配比重新调整材料配比。提供一种自动化、智能化程度较高的混凝土试块制作和试块抗压强度检测一体化生产流程,解决工人劳动强度大,生产效率低,混凝土配比选优的问题。(The invention provides a system and a method for automatically producing and detecting a concrete test block. The automatic batching system comprises a stirrer, a storage bin, a liquid storage tank and a concrete pressure detector; the lower part of the stirrer is provided with a weighing sensor; the control device controls the opening and closing of each valve according to the set material ratio, the sand rate value of the concrete is calculated according to the pressure value detected by the pressure detector, the coarse aggregate bulk density in the concrete ratio is analyzed to be maximum according to the detection numerical value and the design principle of the dense concrete ratio of the framework, the void ratio is reduced to be minimum, the optimal ratio is obtained, and the material ratio is readjusted according to the optimal ratio. The concrete test block manufacturing and test block compressive strength detection integrated production process is high in automation and intelligence, and solves the problems that workers are high in labor intensity, low in production efficiency and excellent in concrete proportioning.)

1. A concrete test block automatic production detection system comprises a stirrer, a vibration platform, a standard support frame and a concrete pressure detector; it is characterized by also comprising a storage bin, a liquid storage tank, a spraying frame and a control device; the equipment forms an automatic batching system, an automatic spraying system and an automatic maintenance system;

the automatic batching system comprises a stirrer, a storage bin, a liquid storage tank and a concrete pressure detector; the bunker comprises a sand bunker LC1, a stone bunker LC2 and a cement bunker LC 3; and every feed bin all is equipped with the export discharge valve, is respectively: the sand silo discharge valve FV1, the stone silo discharge valve FV2 and the cement silo discharge valve FV 3; the liquid storage tank comprises a water tank LC4 and an additive tank LC 5; and each jar all is equipped with outlet valve, is respectively: a water tank valve FV4 and an additive tank valve FV 5; a weighing sensor PW is arranged at the lower part of the stirrer; the sand bin discharge valve FV1, the stone bin discharge valve FV2, the cement bin discharge valve FV3, the water tank valve FV4, the additive tank valve FV5, the weighing sensor PW and the pressure detector are all connected to the control device, the control device controls the opening and closing of each valve according to the set material ratio, the control device also judges whether the concrete sand rate is reasonable according to the pressure value detected by the pressure detector, if the measured value does not meet the standard requirement, the coarse aggregate stacking density in the concrete ratio is analyzed to be the largest according to the detection value and the design principle of the framework compact concrete ratio, the void ratio is reduced to the smallest, thereby the optimal ratio of the coarse aggregate is obtained, then the sand ratio is adjusted, and the concrete material ratio is adjusted again.

2. The automatic production and detection system for concrete test blocks as claimed in claim 1, wherein the automatic batching system further comprises a water tank outlet flow meter FT1 and an additive tank outlet flow meter FT2, when the mixer is charged, sand, a stone bin and cement are added firstly, after each material is charged, the materials are automatically weighed by a weighing sensor PW, and the weight of each material is calculated; then adding water and the admixture, wherein the water and the admixture are metered by a water tank outlet flowmeter and an admixture tank outlet flowmeter.

3. The automatic production detection system for the concrete test block as claimed in claim 1, wherein the automatic spraying system is used for automatically spraying the release agent and comprises a spraying frame and an oil storage tank LC6 of the liquid storage tank, and an outlet of the oil storage tank LC6 is provided with an oil storage tank valve FV6 and an oil storage tank outlet flow meter FT 3; the spray frame comprises a base, a vertical lifting mechanism, a horizontal telescopic mechanism and a spray disc; be equipped with a plurality of shower nozzles on the dish of spraying, vertical lift mechanism fixes on the base, horizontal telescopic machanism fixes in vertical lift mechanism upper end, the dish of spraying is fixed at horizontal telescopic machanism lower extreme, the dish of spraying passes through pipe connection oil storage tank LC6, oil storage tank valve FV6, oil storage tank export flowmeter FT3 and the vertical lift mechanism who sprays the frame, horizontal telescopic machanism's motor all is connected to controlling means, when the mixer stall, descend to the test block mould in by a plurality of shower nozzles of the dish that sprays the frame of controlling means control, then open oil storage tank valve FV6 and spray.

4. The automatic production detection system for the concrete test block as claimed in claim 1, wherein the automatic maintenance system comprises a standard maintenance frame and a temperature and humidity sensor T1, a refrigeration device F1 and a heating device R1 which are arranged near the standard maintenance frame, the temperature and humidity sensor T1, the refrigeration device F1 and the heating device R1 are all connected to the control device, and the control device controls the refrigeration device F1 and the heating device R1 to be turned on and off according to the detection value of the temperature and humidity sensor T1; the control device also controls the standard curing time according to the timer, and automatically reminds when the test block reaches the standard curing time.

5. The automatic production detection system for the concrete test block according to claim 1, further comprising an automatic leveling device, wherein the automatic leveling device comprises a base, a horizontal moving mechanism, a scraper fixing plate and a scraper; the horizontal moving mechanism is in a door shape and is fixed on the base through upright columns at two ends, the middle of each upright column is used for placing a test block mold, the scraper fixing plate is fixed at the lower end of the horizontal moving mechanism in the door shape, and the scraper is fixed at the lower end of the scraper fixing plate and can rotate along a rotating shaft at the lower end of the scraper fixing plate; when scraping at ordinary times, the horizontal migration mechanism of door type is removed in test block mould upper end by preceding to back, and when the scraper blade contacted the test block mould, the test block mould supported and made the scraper blade low side lift up, and the scraper blade upper end rotates along with the rotation axis, and the scraper blade bottom was scraped in the upper end of test block mould, made the material on test block mould surface strickle.

6. The automatic production detection system for the concrete test block according to claim 1, wherein a camera is further arranged on the automatic strickling equipment, the camera is aligned with the upper surface of the test block mold, and an image of the upper surface of the test block mold is acquired for quality detection of whether strickling is performed or not.

7. The automatic production and detection system for concrete test blocks as claimed in claim 1, wherein the mixer of the automatic batching system is further provided with an automatic discharging mechanism, which comprises a discharging motor and a discharging port baffle, and when the mixing timing of the mixer is finished, the discharging motor drives the discharging port baffle to open.

8. The control and process method of the automatic production detection system for the concrete test block as recited in claim 1, characterized by comprising the following steps:

step 1, calculating the raw material ratio by an upper computer of a control device, wherein the raw material ratio comprises sand, cement, stones, water and an additive;

step 2, proportioning and feeding raw materials, opening discharge valves of sand, cement and stones in sequence, measuring the weight of the fed materials by a weighing sensor during feeding of each raw material, and closing the discharge valves after the weight of the fed materials is reached;

step 3, feeding according to the raw material proportion, sequentially opening outlet valves of water and the additive, metering the flow of the raw materials by respective outlet flowmeters, metering the weight according to the flow, and closing the outlet valves when the feeding weight is reached;

step 4, starting the stirrer to stir;

step 5, automatically spraying the test block mold while stirring by the stirrer; placing a test block mold in a positioning block on a vibration table, and starting a horizontal telescopic mechanism and a vertical lifting mechanism of automatic spraying equipment to enable a spray head of the automatic spraying equipment to descend into the test block mold;

step 6, opening a valve of the oil storage tank, and performing timing spraying in the test block mold;

step 7, finishing spraying, and starting a discharging motor of the stirrer to discharge if the stirring time of the stirrer is up;

step 8, blanking the material of the stirrer into a test block mold on a vibration table;

step 9, starting a vibration motor to tamp and time;

step 10, starting automatic leveling equipment after vibration timing is finished, and leveling the surface of the test block mold;

step 11, starting a camera, and collecting an image of the upper surface of the test block mold to carry out strickle detection;

step 12, if no strickling is detected, alarming to remind field personnel to treat the surface problem, and then restarting a strickling program;

step 13, removing the mold after leveling, and conveying the test block to a standard maintenance frame for maintenance;

step 14, after the maintenance timing is finished, carrying out pressure detection on the concrete test block;

step 15, if the pressure detection is not qualified, analyzing that the stacking density of the coarse aggregate in the concrete proportioning reaches the maximum and the void ratio is reduced to the minimum according to the detection numerical value and the design principle of the framework compact concrete proportioning again to obtain the optimal proportioning of the coarse aggregate, and then adjusting the sand ratio and the raw material proportioning; then returning to the step 1;

and step 16, if the pressure detection is qualified, ending.

9. The control and process method of the automatic production detection system for the concrete test block according to claim 8, wherein in the step 11, the image collected by the camera is transmitted to an upper computer of a central control room, and the scraping detection can be performed by a quality inspector directly watching the image in the central control room to judge whether the surface of the test block mold is scraped.

10. The control and process method of the automatic production detection system for the concrete test block according to claim 8, wherein in the step 11, the strickle detection can be automatically detected by an image processing method, which specifically comprises the following steps:

1) the test block mould is brushed with pure black paint; the test block mold is a square mold, and the upper surface of the test block mold is characterized by a plurality of black square grids; the surface of the concrete test block is grey white;

2) acquiring a frame of image through a camera;

3) the taken image is converted into a gray scale image;

4) screening black pixel points line by line; taking a square lattice which is the same as the small square lattice of the mold in actual size (within a set error range) in the square lattices formed by the communicated black pixel points as a test block mold;

5) if the number of the formed black small squares is less than that of the squares of the mould, judging that the edge part is not scraped;

6) setting the set gray level of the concrete test block, and judging whether areas with different gray levels exist in the small black square;

7) and if the area of the gray scale area is larger than the set threshold value, judging that the interior is not strickled.

Technical Field

The invention relates to the technical field of concrete test blocks, in particular to a system and a method for automatically producing and detecting concrete test blocks.

Background

The concrete test block manufacturing and detection are the premise for determining the on-site concrete proportion, and the common method is as follows: the concrete test block is prepared from raw materials according to a certain proportion, then the concrete test block is injected into a mould and placed on a vibration table, the concrete is tamped after a certain period of vibration, then the mould is placed at a fixed position and is stood for 24 hours for mould removal. The test block is manufactured, manually carried and placed on a goods shelf of a standard curing room, concrete curing is carried out, curing time is regulated according to standards, the test block is taken out and placed on a press machine to be detected, and data are collected.

Disclosure of Invention

In order to solve the technical problems in the background art, the invention provides a system and a method for automatically producing and detecting a concrete test block, provides an integrated production process with higher automation and intelligence degree for manufacturing the concrete test block and detecting the compression strength of the test block, and solves the problems of high labor intensity of workers, low production efficiency and optimal concrete proportioning.

In order to achieve the purpose, the invention adopts the following technical scheme:

a concrete test block automatic production detection system comprises a stirrer, a vibration platform, a standard support frame and a concrete pressure detector; the device also comprises a storage bin, a liquid storage tank, a spraying frame and a control device; the equipment comprises an automatic batching system, an automatic spraying system and an automatic maintenance system.

The automatic batching system comprises a stirrer, a storage bin, a liquid storage tank and a concrete pressure detector; the bunker comprises a sand bunker LC1, a stone bunker LC2 and a cement bunker LC 3; and every feed bin all is equipped with the export discharge valve, is respectively: the sand silo discharge valve FV1, the stone silo discharge valve FV2 and the cement silo discharge valve FV 3; the liquid storage tank comprises a water tank LC4 and an additive tank LC 5; and each jar all is equipped with outlet valve, is respectively: a water tank valve FV4 and an additive tank valve FV 5; a weighing sensor PW is arranged at the lower part of the stirrer; the sand bin discharge valve FV1, the stone bin discharge valve FV2, the cement bin discharge valve FV3, the water tank valve FV4, the additive tank valve FV5, the weighing sensor PW and the pressure detector are all connected to the control device, the control device controls the opening and closing of each valve according to the set material ratio, and the control device also judges whether the concrete sand rate is reasonable according to the pressure value detected by the pressure detector, if the measured value does not meet the standard requirement, the coarse aggregate stacking density in the concrete ratio is analyzed to be the largest according to the detection value and the design principle of the dense-skeleton concrete ratio, so that the void ratio is reduced to the smallest, the optimal ratio of the coarse aggregate is obtained, then the sand rate is adjusted, and the concrete material ratio is adjusted again.

Furthermore, the automatic batching system also comprises a water tank outlet flowmeter FT1 and an additive tank outlet flowmeter FT2, when the stirrer is used for feeding, sand, a stone bin and cement are firstly added, after each material is added, the materials are automatically weighed by a weighing sensor PW, and the weight of each raw material is calculated; then adding water and the admixture, wherein the water and the admixture are metered by a water tank outlet flowmeter and an admixture tank outlet flowmeter.

Further, the automatic spraying system is used for automatically spraying the release agent and comprises a spraying frame and an oil storage tank LC6 of the liquid storage tank, and an outlet of the oil storage tank LC6 is provided with an oil storage tank valve FV6 and an oil storage tank outlet flowmeter FT 3; the spray frame comprises a base, a vertical lifting mechanism, a horizontal telescopic mechanism and a spray disc; be equipped with a plurality of shower nozzles on the dish of spraying, vertical lift mechanism fixes on the base, horizontal telescopic machanism fixes in vertical lift mechanism upper end, the dish of spraying is fixed at horizontal telescopic machanism lower extreme, the dish of spraying passes through pipe connection oil storage tank LC6, oil storage tank valve FV6, oil storage tank export flowmeter FT3 and the vertical lift mechanism who sprays the frame, horizontal telescopic machanism's motor all is connected to controlling means, when the mixer stall, descend to the test block mould in by a plurality of shower nozzles of the dish that sprays the frame of controlling means control, then open oil storage tank valve FV6 and spray.

Further, the automatic maintenance system comprises a standard maintenance frame, and a temperature and humidity sensor T1, a refrigeration plant F1 and a heating plant R1 which are arranged near the standard maintenance frame, wherein the temperature and humidity sensor T1, the refrigeration plant F1 and the heating plant R1 are all connected to a control device, and the control device controls the refrigeration plant F1 and the heating plant R1 to be turned on and off according to the detection value of the temperature and humidity sensor T1; the control device also controls the standard curing time according to the timer, and automatically reminds when the test block reaches the standard curing time.

Furthermore, the automatic strickle device comprises an automatic strickle device, wherein the automatic strickle device comprises a base, a horizontal moving mechanism, a scraper fixing plate and a scraper; the horizontal moving mechanism is in a door shape and is fixed on the base through upright columns at two ends, the middle of each upright column is used for placing a test block mold, the scraper fixing plate is fixed at the lower end of the horizontal moving mechanism in the door shape, and the scraper is fixed at the lower end of the scraper fixing plate and can rotate along a rotating shaft at the lower end of the scraper fixing plate; when scraping at ordinary times, the horizontal migration mechanism of door type is removed in test block mould upper end by preceding to back, and when the scraper blade contacted the test block mould, the test block mould supported and made the scraper blade low side lift up, and the scraper blade upper end rotates along with the rotation axis, and the scraper blade bottom was scraped in the upper end of test block mould, made the material on test block mould surface strickle.

Further, the automatic strickling equipment is also provided with a camera, the camera is aligned to the upper surface of the test block mold, and an image of the upper surface of the test block mold is collected for quality detection whether strickling is performed or not.

Further, automatic blending system's mixer still be equipped with automatic discharging mechanism, including ejection of compact motor and discharge gate baffle, after the mixer stirring timing, automatic stirring motor drives the discharge gate baffle and opens.

The control and process method of the automatic production detection system for the concrete test block comprises the following steps:

step 1, calculating the raw material ratio by an upper computer of a control device, wherein the raw material ratio comprises sand, cement, stones, water and an additive;

step 2, proportioning and feeding raw materials, opening discharge valves of sand, cement and stones in sequence, measuring the weight of the fed materials by a weighing sensor during feeding of each raw material, and closing the discharge valves after the weight of the fed materials is reached;

step 3, feeding according to the raw material proportion, sequentially opening outlet valves of water and the additive, metering the flow of the raw materials by respective outlet flowmeters, metering the weight according to the flow, and closing the outlet valves when the feeding weight is reached;

step 4, starting the stirrer to stir;

step 5, automatically spraying the test block mold while stirring by the stirrer; placing a test block mold in a positioning block on a vibration table, and starting a horizontal telescopic mechanism and a vertical lifting mechanism of automatic spraying equipment to enable a spray head of the automatic spraying equipment to descend into the test block mold;

step 6, opening a valve of the oil storage tank, and performing timing spraying in the test block mold;

step 7, finishing spraying, and starting a discharging motor of the stirrer to discharge if the stirring time of the stirrer is up;

step 8, blanking the material of the stirrer into a test block mold on a vibration table;

step 9, starting a vibration motor to tamp and time;

step 10, starting automatic leveling equipment after vibration timing is finished, and leveling the surface of the test block mold;

step 11, starting a camera, and collecting an image of the upper surface of the test block mold to carry out strickle detection;

step 12, if no strickling is detected, alarming to remind field personnel to treat the surface problem, and then restarting a strickling program;

step 13, removing the mold after leveling, and conveying the test block to a standard maintenance frame for maintenance;

step 14, after the maintenance timing is finished, carrying out pressure detection on the concrete test block;

and step 15, if the pressure detection value is not qualified, the control device also judges whether the concrete sand rate is reasonable according to the pressure value detected by the pressure detector, if the detected value does not meet the standard requirement, the control device further analyzes that the stacking density of the coarse aggregate in the concrete proportioning reaches the maximum and the void ratio is reduced to the minimum according to the detection value and the design principle of the skeleton compact concrete proportioning, so that the optimal proportioning of the coarse aggregate is obtained, then the sand rate is adjusted, and then the concrete material proportioning is readjusted.

According to the detection numerical value and the design principle of the framework compact concrete proportion, the stacking density of the coarse aggregate in the concrete proportion is analyzed to be maximum, the void ratio is reduced to be minimum, the optimal proportion is obtained, and the material proportion is readjusted according to the optimal proportion; then returning to the step 1;

and step 16, if the pressure detection is qualified, ending.

Compared with the prior art, the invention has the beneficial effects that:

the device and the method can effectively complete the manufacture and the detection of the concrete test block, solve the problem of optimal concrete proportioning, provide reference data for optimizing the concrete proportioning, improve the working efficiency and reduce the labor productivity through the automatic and intelligent production and detection of the test block.

Drawings

FIG. 1 is a schematic view of an automatic production and inspection system for a concrete block according to the present invention;

FIG. 2 is a schematic view of the spray frame structure of the present invention;

FIG. 3 is a schematic structural view of an automatic strike-off apparatus of the present invention;

FIG. 4 is a flow chart of the control and process method of the automatic production detection system for concrete test blocks of the present invention;

FIG. 5 is a diagram of a case of non-levelled image detection according to the present invention;

FIG. 6 is a second embodiment of the present invention showing an unsmooth case in the detection of a flattened image.

In the figure: 1-stock bin 2-liquid storage tank 3-mixer 4-vibration platform 5-test block mould 6-spray frame 7-automatic strickling equipment 8-standard support frame 9-concrete pressure detector 10-control device 11-spray frame base 12-vertical lifting mechanism 13-horizontal telescopic mechanism 14-connecting rod (with water pipeline in it) 15-spray tray 16-mould positioning block 17-strickling equipment base 18-horizontal moving mechanism 19-scraper fixing plate 20-scraper 21-rotating shaft 22-camera 23-edge un-strickling 24-internal un-strickling M1-mixer motor M2-mixer discharging motor M3-vibration motor M4-spray frame vertical lifting mechanism motor M5-automatic strickling equipment horizontal strickling equipment A moving mechanism motor.

Detailed Description

The following detailed description of the present invention will be made with reference to the accompanying drawings.

A concrete test block automatic production detection system comprises a stirrer 3, a vibration platform 4, a standard maintenance frame 8 and a concrete pressure detector 9; the device also comprises a storage bin 1, a liquid storage tank 2, a spraying frame 6 and a control device 10; the equipment comprises an automatic batching system, an automatic spraying system and an automatic maintenance system.

The automatic batching system comprises a stirrer 3, a storage bin 1, a liquid storage tank 2 and a concrete pressure detector 9; the bunker 1 comprises a sand bunker LC1, a stone bunker LC2 and a cement bunker LC 3; and every feed bin all is equipped with the export discharge valve, is respectively: the sand silo discharge valve FV1, the stone silo discharge valve FV2 and the cement silo discharge valve FV 3; the liquid storage tank 2 comprises a water tank LC4 and an additive tank LC 5; and each jar all is equipped with outlet valve, is respectively: a water tank valve FV4 and an additive tank valve FV 5; a weighing sensor PW is arranged at the lower part of the stirrer; sand storehouse discharge valve FV1, stone storehouse discharge valve FV2, cement storehouse discharge valve FV3, water pitcher valve FV4, additive jar valve FV5, weighing sensor PW and pressure detector 9 all connect to controlling means 10, by controlling means 10 according to the opening and closing of each valve of material ratio control of setting for, controlling means 10 still judges whether the ratio is reasonable according to the pressure value that pressure detector 9 detected, whether the sand rate is qualified, if not satisfy the quality requirement, then according to detecting numerical value, and the closely knit type concrete ratio design principle of skeleton, and then coarse aggregate bulk density reaches the biggest in the analysis concrete ratio, the void fraction falls to minimumly, thereby obtain the best ratio of coarse aggregate, readjust the material. The sand ratio adjustment range C30 is typically 40% -47% for concrete, within which adjustments are made. According to the working principle of the skeleton compact concrete, the mixing proportion of the concrete under high compressive strength obtained by sand rate adjustment is further researched, namely, under the condition that a cementing material is fixed, the concrete obtains the maximum fluidity, and good workability and water retention are kept.

The automatic batching system also comprises a water tank outlet flowmeter FT1 and an additive tank outlet flowmeter FT2, when the stirrer 3 is used for feeding, sand, a stone bin and cement are firstly added, after each material is added, the materials are automatically weighed by a weighing sensor PW, and the weight of each material is calculated; then adding water and the admixture, wherein the water and the admixture are metered by a water tank outlet flowmeter and an admixture tank outlet flowmeter.

The automatic spraying system is used for automatically spraying the release agent and comprises a spraying frame 6 and an oil storage tank LC6 of the liquid storage tank 2, and an outlet of the oil storage tank LC6 is provided with an oil storage tank valve FV6 and an oil storage tank outlet flowmeter FT 3; the spray rack 6 comprises a base 11, a vertical lifting mechanism 12, a horizontal telescopic mechanism 13 and a spray disc 15; be equipped with a plurality of shower nozzles on shower tray 15, shower nozzle quantity and position correspond unanimously with the design of test block mould 5, vertical lift mechanism 12 is fixed on base 11, horizontal telescopic machanism 13 is fixed in vertical lift mechanism 12 upper end, shower tray 15 is fixed at horizontal telescopic machanism 13 lower extreme, shower tray 15 passes through pipeline 14 and connects oil storage tank LC6, oil storage tank valve FV6, oil storage tank export flowmeter FT3 and vertical lift mechanism 12 of spray frame 6, the motor of horizontal telescopic machanism 13 all is connected to controlling means, when mixer 3 stall, by controlling means 10 control spray frame 6 spray tray 15 a plurality of shower nozzles descend to the test block mould 5 in, then open oil storage tank valve FV6 and spray.

The automatic maintenance system comprises a standard maintenance frame 8, and a temperature and humidity sensor T1, a refrigeration plant F1 and a heating plant R1 which are arranged near the standard maintenance frame, wherein the temperature and humidity sensor T1, the refrigeration plant F1 and the heating plant R1 are all connected to the control device 10, and the control device 10 controls the refrigeration plant F1 and the heating plant R1 to be turned on and off according to the detection value of the temperature and humidity sensor T1; the control device also controls the standard curing time according to the timer, and automatically reminds when the test block reaches the standard curing time.

The automatic strickle device 7 is also included, and the automatic strickle device 7 comprises a base 17, a horizontal moving mechanism 18, a scraper fixing plate 19 and a scraper 20; the horizontal moving mechanism 18 is in a door shape and is fixed on the base 17 through upright columns at two ends, the middle of each upright column is used for placing the test block mold 5, the scraper fixing plate 19 is fixed at the lower end of the horizontal moving mechanism 18 in the door shape, and the scraper 20 is fixed at the lower end of the scraper fixing plate 19 and can rotate along a rotating shaft 21 at the lower end of the scraper fixing plate 19; when scraping, the door-shaped horizontal moving mechanism 18 moves from front to back at the upper end of the test block mold 5, when the scraper 20 contacts the test block mold 5, the test block mold 5 supports to enable the lower end of the scraper 20 to be lifted, the upper end of the scraper 20 rotates along with the rotating shaft 21, the bottom end of the scraper 20 is scraped at the upper end of the test block mold 5, and materials on the surface of the test block mold 5 are scraped.

The automatic strickling equipment 7 is further provided with a camera 22, the camera 22 is aligned to the upper surface of the test block mold 5, and images of the upper surface of the test block mold 5 are collected for quality detection of whether strickling is performed or not.

Automatic blending system's mixer 3 still be equipped with automatic discharging mechanism, including ejection of compact motor M2 and discharge gate baffle B1, after mixer 3 stirring timing, ejection of compact motor M2 drives discharge gate baffle B1 and opens.

The control and process method of the automatic production detection system for the concrete test block comprises the following steps:

step 1, calculating the raw material ratio by an upper computer of a control device 10, wherein the raw material ratio comprises sand, cement, stones, water and an additive;

step 2, proportioning and feeding raw materials, opening discharge valves of sand, cement and stones in sequence, measuring the weight of the fed materials by a weighing sensor during feeding of each raw material, and closing the discharge valves after the weight of the fed materials is reached;

step 3, feeding according to the raw material proportion, sequentially opening outlet valves of water and the additive, metering the flow of the raw materials by respective outlet flowmeters, metering the weight according to the flow, and closing the outlet valves when the feeding weight is reached;

step 4, starting the stirrer 3 to stir;

step 5, automatically spraying the test block mold 5 while stirring by the stirrer 3; placing a test block mold 5 in a positioning block on a vibration table 4, and starting a horizontal telescopic mechanism 13 and a vertical lifting mechanism 12 of automatic spraying equipment 6 to enable a spray head of the automatic spraying equipment 6 to descend into the test block mold;

step 6, opening a valve of the oil storage tank, and timing and spraying in the test block mold 5;

step 7, spraying is finished, and at the moment, if the stirring time of the stirrer 3 is up, a discharging motor of the stirrer 3 is started to discharge materials;

step 8, blanking the material of the stirrer 3 into a test block mold 5 on a vibration table 4;

step 9, starting a vibration motor to tamp and time;

step 10, starting the automatic strickling equipment 7 after the vibration timing is finished, and strickling the surface of the test block mold 5;

step 11, starting a camera 22, and collecting an image of the upper surface of the test block mold 5 for strickling detection;

step 12, if no strickling is detected, alarming to remind field personnel to treat the surface problem, and then restarting a strickling program;

step 13, removing the formwork after leveling, and conveying the concrete test block to a standard maintenance frame 8 for maintenance;

step 14, after the maintenance timing is finished, carrying out pressure detection on the concrete test block;

step 15, if the pressure detection is unqualified, analyzing that the stacking density of coarse aggregates in the concrete proportioning reaches the maximum and the void ratio is reduced to the minimum according to the detection numerical value and the design principle of the framework compact concrete proportioning to obtain the optimal proportioning, and readjusting the material proportioning according to the optimal proportioning; then returning to the step 1;

step 16, if the pressure detection is qualified, ending;

and step 17, cleaning the stirrer 3, after the concrete test block is produced, automatically feeding water (in a water storage tank) in the stirrer 3 or residual mortar exists in the stirrer 3 after the set experiment times are finished, cleaning the stirrer 3, introducing the wastewater into a water tank, and recycling the water after standing and precipitating.

In the step 11, the image collected by the camera 22 is transmitted to an upper computer of the central control room, and the scraping detection can be performed by directly watching the image in the central control room by a quality inspector to judge whether the surface of the test block mold is scraped. The strickle detection can also be automatically detected by an image processing method, and specifically comprises the following steps:

1) test block mold 5 itself is painted with pure black paint as in fig. 5-6; the test block mold 5 is a square mold, and the upper surface of the test block mold is provided with a plurality of black square grid characteristics; the surface of the concrete test block is grey white;

2) acquiring a frame of image by the camera 22;

3) the taken image is converted into a gray scale image;

4) screening black pixel points line by line; taking a square lattice which is the same as the small square lattice of the mold 5 in actual size (within a set error range) in the square lattices formed by the communicated black pixel points as a test block mold 5;

5) if the number of black squares formed is less than the number of squares of the mold 5, it is determined that the edge is not scraped off 23, see fig. 5;

6) setting the set gray level of the concrete test block, and judging whether areas with different gray levels exist in the small black square;

7) if the gray scale area is greater than the set threshold, it is determined that the interior is not scratched 24, see FIG. 6.

The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.