CN112858101A - Machine-made sand quality detection device and detection method - Google Patents
Machine-made sand quality detection device and detection method Download PDFInfo
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- CN112858101A CN112858101A CN202110044723.1A CN202110044723A CN112858101A CN 112858101 A CN112858101 A CN 112858101A CN 202110044723 A CN202110044723 A CN 202110044723A CN 112858101 A CN112858101 A CN 112858101A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/12—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring rising or falling speed of the body; by measuring penetration of wedged gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
- G01N2001/386—Other diluting or mixing processes
Abstract
The application relates to a machine-made sand quality detection device and a detection method, the machine-made sand quality detection device comprises a base, a mortar container, a guide rod and a lantern ring, wherein the mortar container is connected to the base and used for containing machine-made sand mortar, the guide rod is fixedly connected to the base and extends vertically upwards, the lantern ring slides along the guide rod, a counterweight cone is connected to the lantern ring and is positioned right above the mortar container, the pointed end of the counterweight cone is vertically and downwards arranged, the guide rod is a screw rod, the lantern ring is in threaded fit with the guide rod, and the base is further connected with a first driving motor for driving the guide rod to rotate; a control mechanism for controlling the lifting of the counterweight cone is connected between the lantern ring and the counterweight cone; the control mechanism comprises a control box, a tip detector, a traction rope and a pull rope assembly for retracting the traction rope, wherein the bottom end of the counterweight cone is located below the control box and is abutted to the bottom surface of the control box. This application has the effect that detects mechanism sand mobility.
Description
Technical Field
The application relates to the field of machine-made sand, in particular to a machine-made sand quality detection device and a detection method.
Background
With the further development of the building industry, natural sand is excessively exploited, resources are gradually lacked, and machine-made sand produced by a sand making machine gradually replaces the market with unique advantages and becomes one of the best sources of building materials. At present, a plurality of concrete and mortar enterprises begin to replace natural sand with machine-made sand in production, and better economic benefit is obtained.
However, the existing sandstone industry generally has the condition that the source of the master batch is unstable, because most of the machine-made sand is crushed sandstone or mountain sand, which contains mud and powder of different types and quantities, most of the mud and powder are required to be removed by water washing so as to avoid influencing the use of concrete. Under the requirement of environmental protection, the water of sand washing needs purification treatment, can not discharge in disorder, because the flocculating agent can make solute, colloid or suspended solid granule in the aqueous solution produce the flocculent and precipitate to play the effect of purifying water quality, consequently grit manufacturing enterprise uses the flocculating agent extensively at present to purify the sand washing water, filter water quality, recycle once more.
However, the machine-made sand production enterprises only consider that the discharge of the sand washing water meets the environmental protection requirement, but do not consider that a large amount of flocculant contained in the recycled sand washing water can be brought into the machine-made sand. At present, the machine-made sand is generally inspected by a method of JGJ 52-2006 Standard inspection method for quality and fineness of sand and stone for common concrete, indexes such as water content, mud content, MB value, fineness modulus and the like in the sand are measured, and whether the machine-made sand is qualified or not is judged. In the inspection method, the machine-made sand mixed with the flocculating agent also belongs to a qualified product in index, but when concrete is actually manufactured, the existing flocculating agent can greatly influence the fluidity of the concrete, so that the quality of the concrete is reduced.
Therefore, even if the indexes of the machine-made sand meet the standard, the high-precision fluidity detection of the purchased machine-made sand is still needed, whether the water demand of the machine-made sand is deviated or not is judged according to the fluidity of the mortar, whether a flocculating agent is contained or not is judged, and finally the comprehensive quality of the machine-made sand is judged.
Disclosure of Invention
In order to detect the mobility of mechanism sand, this application provides a mechanism sand quality detection device and detection method.
First aspect, this application provides a mechanism sand quality detection device, adopts following technical scheme: comprises a base, a mortar container which is connected with the base and is used for containing machine-made sand mortar, a guide rod which is fixedly connected with the base and extends vertically upwards, and a lantern ring which slides along the guide rod, wherein a counterweight cone is connected on the lantern ring and is positioned right above the mortar container, and the tip end of the counterweight cone is vertically arranged downwards,
the guide rod is a screw rod, the lantern ring is in threaded fit with the guide rod, and the base is also connected with a first driving motor for driving the guide rod to rotate;
a control mechanism for controlling the lifting of the counterweight cone is connected between the lantern ring and the counterweight cone; the control mechanism comprises a control box, a tip detector, a pull rope and a pull rope assembly, wherein the tip detector is connected to the control box and detects the tip position of the counterweight cone, one end of the pull rope is connected to the bottom end of the counterweight cone, the pull rope assembly is used for retracting the pull rope, and the bottom end of the counterweight cone is located below the control box and is abutted to the bottom surface of the control box.
By adopting the technical scheme, when the fluidity of the mortar is detected, firstly, the manufactured mortar is placed in a mortar container, then, the first driving motor is started to enable the guide rod to rotate, the lifting of the lantern ring is realized through the threaded matching of the guide rod and the lantern ring, in the lifting process of the lantern ring, the distance between the tip of the counterweight cone and the liquid level of the mortar is detected by the tip detector until the cone tip of the counterweight cone contacts the liquid level of the mortar in the mortar container, the first driving motor is stopped, and the contact between the cone tip and the liquid level of the mortar is kept;
then the pulling of the pull rope component on the traction rope is released, so that the counterweight cone and the traction rope are subjected to free falling body descending, the counterweight cone and the traction rope are hit into mortar, finally the counterweight cone is pulled up by the pull rope component until the counterweight cone returns to the position before falling again and abuts against the bottom surface of the control box, and at the moment, the pull-up length of the counterweight cone by the pull rope component is the falling distance of the counterweight cone;
the falling distance of the weight-balancing cone is the insertion depth of the weight-balancing cone hitting the mortar, and after the falling distance of the weight-balancing cone is obtained, the fluidity of the mortar can be known according to the falling distance, so that whether the machine-made sand contains the flocculant or not is judged.
Furthermore, one end of the traction rope is connected to the bottom end of the counterweight cone, the other end of the traction rope is connected to the control box, the pull rope assembly comprises an insertion rod which slides along the vertical direction, the insertion rod is abutted against the traction rope, one end, connected with the control box, of the traction rope is taken as a starting point, the traction rope extends upwards from the starting point to bypass the insertion rod, and one end, bypassing the insertion rod, of the traction rope is connected with the bottom end of the counterweight cone;
the pull rope assembly further comprises a lifting sleeve, a threaded rod and a second driving motor, wherein the outer wall of the lifting sleeve is detachably connected with the insertion rod, the threaded rod is in threaded fit with the inner wall of the lifting sleeve, and the second driving motor drives the threaded rod to rotate; still be equipped with in the control box and carry out vertical spacing restriction board to the inserted bar, vertical spacing groove has been seted up on the limiting plate, the inserted bar passes vertical spacing groove and goes up and down along vertical spacing groove.
Through adopting above-mentioned technical scheme, when examining, at first rotate through second driving motor drive threaded rod to make the inserted bar fall along vertical spacing groove fast, make the haulage rope lose the support, at this moment, the counter weight awl can carry out free fall with the haulage rope, accords with detection standard, finally falls into in the mortar.
Furthermore, a pressure sensor for detecting the pressure of the traction rope on the inserting rod is arranged at the abutting position of the inserting rod and the traction rope.
When the traction rope is retracted, enough margin is required to be ensured to be always reserved on the length of the traction rope, so that the counterweight cone can not be pulled by the traction rope in the falling and smashing processes, and a freely falling body can be kept;
however, the situation that the counterweight cone is really pulled at any moment cannot be determined during pulling up, so that a pressure sensor is arranged at the abutting position of the insertion rod and the traction rope, when the pressure sensor is stressed, the allowance of the traction rope is used up, the counterweight cone is really pulled to move upwards, the position of the insertion rod at the moment is recorded, then the insertion rod continues to move upwards until the counterweight cone is reset, and the tamping depth is calculated according to the recorded stressed position of the insertion rod and the position of the insertion rod when the counterweight cone is reset, so that the flowability is calculated; meanwhile, the pressure detected by the pressure sensor can also represent the adhesive force of the mortar to the counterweight cone, and the fluidity of the mortar can be judged in an auxiliary manner.
Furthermore, still be equipped with two slope deflectors to the haulage rope direction on the inserted bar, two deflectors incline in opposite directions along the direction of gravity, pressure sensor is located between two deflectors, and the butt in the lowest of two deflectors.
Through adopting above-mentioned technical scheme, at the in-process that the inserted bar rises, because the haulage rope has the surplus, so hardly guarantee that the haulage rope can press on pressure sensor all the time, so set up the slope deflector, make the haulage rope can be when being driven by the inserted bar, slide in between two slope deflectors, keep the butt in pressure sensor.
Furthermore, a vibration mechanism for shaking mortar is further arranged on the mortar container.
After mortar is poured into the mortar container, the mortar is generally needed to be inserted and pounded for 25 times from the center to two sides, and then the peripheral wall of the mortar container is knocked to make the mortar uniform; after this scheme of use, can tremble even with the mortar through vibration mechanism vibration mortar. When the detected cleaning is finished, water can be contained in the mortar container, the counterweight cone is put down into the water, the water is vibrated by the vibration of the vibration mechanism, and the counterweight cone and the mortar container are automatically and synchronously cleaned.
In a second aspect, the present application provides a machine-made sand quality detection method, which is applied to the machine-made sand quality detection device according to any one of claims 1 to 5, and the machine-made sand quality detection device further comprises a plurality of shooting mechanisms arranged on the base and used for shooting the falling process of the counterweight cone at multiple angles;
the method comprises the following steps:
shooting the standard counterweight cone, and generating a standard image according to the shot image;
shooting a counterweight cone used in real time, and generating a real-time image according to the shot image;
comparing the real-time image with the standard image, and judging whether the weight cone used in real time has errors or not;
and sending a prompt to the user according to the judgment result.
Through adopting above-mentioned technical scheme, when examining, need detect the counter weight awl, no matter the counter weight awl is infected with debris and leads to the weight error to appear, still the self shape of counter weight awl warp, can influence the final degree of depth of inserting into the mortar, consequently the counter weight awl is compared through the shooting mechanism of same angle, guarantees to be in standard state all the time at the counter weight awl that uses.
Further, the method further comprises:
acquiring a plurality of falling images continuously shot by a shooting mechanism in the falling process of the counterweight cone;
calculating real-time acceleration of the weight cone in the using process and the speed of the weight cone at each moment according to the falling position of the weight cone in the plurality of falling images and the preset shooting interval time of the falling images;
calculating real-time kinetic energy of the counterweight cone at each moment in the process of entering the mortar according to the real-time speed of the counterweight cone and the mass of the counterweight cone;
calculating the real-time stress condition of the counterweight cone in the process of entering the mortar according to the mass of the counterweight cone, the real-time acceleration and the local standard gravity acceleration;
and displaying the real-time kinetic energy, the real-time stress condition and the real-time speed of the counterweight cone to a user to assist in judging the fluidity of the mortar.
By adopting the technical scheme, the counterweight cone begins to fall in a static state, so the initial speed is 0, the shooting time interval of a plurality of falling images can be preset, and the distance between the position of the counterweight cone in the falling image and the initial position can be measured from the falling image, so the final speed and the acceleration of the counterweight cone in the first falling image of each shooting mechanism can be calculated, the final speed and the acceleration of the counterweight cone in the next falling image are continuously calculated by taking the speed at the moment as the initial speed, and the speed and the acceleration of the counterweight cone in each falling image are finally obtained;
under the condition of known acceleration, the acting force of the mortar on the weight cone can be calculated by combining the mass of the weight cone and the local gravity acceleration, and the acting force is used for assisting in judging the fluidity of the mortar.
Further, the method further comprises:
acquiring a plurality of falling images continuously shot by a shooting mechanism in the falling process of the counterweight cone;
calculating local actual gravity acceleration according to the falling positions of the counterweight cones in the plurality of falling images and the preset shooting interval time of the falling images;
and carrying out weighting judgment on the fluidity of the mortar according to the ratio of the actual gravity acceleration to the standard acceleration.
By adopting the technical scheme, when the mortar fluidity is detected, the standard detection value is obtained under the standard gravity acceleration, and the gravity accelerations of all places are not completely consistent, so the judgment mode of the mortar fluidity is weighted by calculating the gravity acceleration on the spot.
Further, the method further comprises:
judging the fluidity of the machine-made sand according to the fluidity of the mortar;
and storing the machine-made sand in storage with different humidity according to the fluidity of the machine-made sand, and marking the fluidity.
Through adopting above-mentioned technical scheme, the mobility that detects the mortar is originally for the mobility that detects the mechanism sand, detects the back, to qualified mechanism sand, stores in the branch storehouse to the mechanism sand still can have the mobility when detecting when guaranteeing follow-up use, makes things convenient for follow-up direct calling and chooses for use.
Furthermore, the method is applied to high-rise transport concrete, the ratio of cement to water in the high-fluidity concrete is reduced, and high-fluidity machine-made sand is selected to prepare the high-fluidity concrete.
By adopting the technical scheme, when the concrete pumping device is used, concrete is required to be pumped to the top layer of a building by a pump for a high-rise building, so that the fluidity of the concrete required to be pumped is higher. Generally, when the concrete is used, more cement and water are added into the concrete to improve the fluidity, but the manufacturing cost of the concrete is increased, so that the high-fluidity machine-made sand can be used to improve the fluidity of the finished concrete and reduce the required amount of cement of the concrete, thereby reducing the total price.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the automatic lifting during the position adjustment of the counterweight cone is realized through the matching of the first driving motor and the tip detector;
2. the automatic falling and rising of the counterweight cone are realized through the matching of the pulling-up component and the insertion rod;
3. through the setting of vibration mechanism, vibrate the mortar automatically, and do not need artifical vibration to make the mortar even.
Drawings
Fig. 1 is a schematic view of the overall structure of the present application.
Fig. 2 is a first structural sectional view of the present application.
Fig. 3 is a structural sectional view of the second embodiment.
Fig. 4 is an enlarged view of a portion a of fig. 3.
Fig. 5 is an exploded view of the insertion rod.
Description of reference numerals: 1. a base; 2. a mortar container; 21. a vibration mechanism; 3. a guide bar; 4. A first drive motor; 41. a collar; 42. an extension rod; 43. a limiting rod; 5. a counterweight cone; 6. a control mechanism; 61. a control box; 611. a limiting plate; 612. a vertical limiting groove; 613. an auxiliary limit groove; 62. a display screen; 63. a hauling rope; 64. a pull cord assembly; 641. an insertion rod; 642. a lifting sleeve; 643. a threaded rod; 644. a second drive motor; 645. a guide plate; 646. a pressure sensor; 7. a shooting mechanism.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
Example 1
Referring to fig. 1, a mechanism sand quality testing device includes a base 1 supported on a table top, and a mortar container 2 detachably connected to the base 1 and used for containing mechanism sand mortar. Before detection, machine-made sand mixed water and cement are firstly prepared into mortar. For example, based on the actual production proportion of the C30 concrete, the amount of broken stones in the proportion is removed, the proportion of other materials is not changed, the materials are fully and uniformly stirred according to the amount of one liter to form mortar, and then the mortar is added into a mortar container 2 so as to be detected.
Referring to fig. 1 and 2, a groove for accommodating mortar container 2 is arranged on base 1, and the groove is in clearance fit with mortar container 2. In the conventional use, the mortar in the mortar container 2 usually needs to be pounded 25 times from the center to the edge, and the peripheral wall of the mortar container 2 is knocked to make the mortar uniform, which is inconvenient, so in the embodiment, a vibration mechanism 21 is arranged on the mortar container 2, the vibration mechanism 21 uses a vibration motor, the vibration motor is connected to the base 1, and the output end abuts against the side wall of the mortar container 2 for applying vibration to the mortar container 2, so that the mortar can be conveniently and quickly made uniform in the mortar container 2.
The central point of base 1 puts and is provided with vertical guide bar 3, the first driving motor 4 of drive guide bar 3 pivoted that upwards extends, and the output shaft and the guide bar 3 coaxial coupling of first driving motor 4, and guide bar 3 use the screw rod, and threaded connection has lantern ring 41 on guide bar 3. When the first driving motor 4 drives the guide rod 3 to rotate, the collar 41 can vertically lift along the length direction of the guide rod 3.
As shown in fig. 1 and 2, the inner wall of the collar 41 is screwed to the guide rod 3, and the outer wall of the collar 41 is fixedly connected with an extension rod 42 horizontally arranged, and the extension rod 42 is located on the side of the collar 41 facing the mortar container 2. The extension rod 42 is connected with a counterweight cone 5 and a control mechanism 6 for controlling the counterweight cone 5 right above the mortar container 2. When the collar 41 moves up and down on the guide bar 3, the extension bar 42, the control mechanism 6, and the weight cone 5 move up and down together. In order to guarantee that the lifting process only vertically lifts, and can not be driven the incline by the screw thread frictional force of guide bar 3, still vertically be connected with gag lever post 43 on base 1, extension rod 42 offer with gag lever post 43 complex vertical spacing hole, gag lever post 43 and vertical spacing downthehole wall butt.
The tip portion of the weight cone 5 is referred to as a tip, the bottom portion of the weight cone 5 is referred to as a bottom, and the control mechanism 6 includes a control box 61, a tip detector connected to the control box 61 and detecting the position of the tip of the weight cone 5, a pulling rope 63 having one end connected to the bottom of the weight cone 5, and a pulling rope assembly 64 for storing the pulling rope 63. Wherein, the bottom of counter weight awl 5 is located control box 61 below and butt in control box 61 bottom surface, and the tip detector uses infrared detector for whether detect counter weight awl 5 tip and the mortar liquid level contact in the mortar container 2. Specifically, since the weight cone 5 abuts against the bottom surface of the control box 61, the distance from the tip of the weight cone 5 to the bottom surface of the control box 61 is a fixed value, and therefore, the distance between the bottom surface of the control box 61 and the mortar liquid level can be detected by the infrared detector connected to the bottom of the weight box, and whether the tip of the weight cone 5 is in contact with the mortar liquid level can be determined.
When the fluidity of mortar is detected, firstly, the mortar in the mortar container 2 is uniformly vibrated through the vibration motor, then the first driving motor 4 is started to enable the guide rod 3 to rotate, the lifting of the control box 61 and the counterweight cone 5 is realized, in the lifting process of the counterweight cone 5, the distance between the tip of the counterweight cone 5 and the mortar liquid level is detected through the tip detector until the tip of the counterweight cone 5 is contacted with the mortar liquid level in the mortar container 2, the first driving motor 4 is stopped, and the contact between the tip of the cone and the mortar liquid level is kept. At this time, the preparation work before the mortar fluidity detection is completed, and then the fluidity of the mortar can be judged according to the depth of the mortar hit by just unlocking the counterweight cone 5 by the pull rope assembly 64 to enable the counterweight cone 5 to freely fall and hit into the mortar.
As shown in fig. 2 and 3, the draw-string assembly 64 indirectly controls the weight cone 5 by controlling the draw-string 63 in order to ensure that the free fall of the weight cone 5 is not disturbed. Specifically, one end of the pulling rope 63 is connected to the bottom end of the counterweight cone 5, the other end of the pulling rope is connected to the control box 61, the pulling rope assembly 64 comprises an insertion rod 641 which slides along the vertical direction, and the insertion rod 641 is abutted to the middle section of the pulling rope 63. For ease of understanding, the end of the pulling rope 63 connected to the control box 61 is regarded as a starting point, and the pulling rope 63 extends upward from the starting point to pass through the insertion rod 641 and is connected to the bottom end of the counterweight cone 5 at the end passing through the insertion rod 641. Therefore, when the insertion rod 641 ascends, the traction rope 63 can be driven to pull the counterweight cone 5 to ascend. When the insertion rod 641 descends, the insertion rod 641 descends in a free-falling manner, so that the counterweight cone 5 and the traction rope 63 lose support and the free-falling manner is also carried out; since the insertion rod 641 performs a movable pulley-like effect, and the descending distance of the insertion rod 641 is 1:2 from the descending distance of the weight cone 5, the insertion rod 641 inevitably descends faster than the weight cone 5 in the case of free falling, and does not interfere with the free falling of the weight cone 5.
In order to control the insertion rod 641 to ascend, the pull-cord assembly 64 further includes a lifting sleeve 642 magnetically connected to the insertion rod 641, a threaded rod 643 threadedly engaged with an inner wall of the lifting sleeve 642, and a second driving motor 644 for driving the threaded rod 643 to rotate. Wherein the insertion rod 641 radially extends along the lifting sleeve 642 and is connected to the outer wall of the lifting sleeve 642 through an electromagnet, and the second driving motor 644 is fixedly connected to the control box 61.
As shown in fig. 3 and 4, in order to prevent the insertion rod 641 from deviating during the lifting process, a limiting plate 611 for vertically limiting the insertion rod 641 is further provided in the control box 61. The limiting plate 611 is provided with a vertical limiting groove 612 extending in the vertical direction, the vertical limiting groove 612 penetrates through the limiting plate 611 in the horizontal direction to form a through groove, and the insertion rod 641 penetrates through the vertical limiting groove 612 in the horizontal direction and abuts against the inner wall of the vertical limiting groove 612 when penetrating through the vertical limiting groove 612.
Meanwhile, in order to prevent the insertion rod 641 from deviating in the horizontal direction during the falling process, an auxiliary limiting groove 613 is formed in the inner wall of the vertical limiting groove 612, and the auxiliary limiting groove 613 also extends in the vertical direction. Two sides of the insertion rod 641 are provided with auxiliary limiting blocks inserted into the auxiliary limiting grooves 613
During detection, when the electromagnet is powered off, the insertion rod 641 freely falls down to enable the traction rope 63 to lose support, at the moment, the counterweight cone 5 and the traction rope 63 can freely fall down to meet detection standards, and finally, the counterweight cone is stabilized in mortar after falling and sinking for a fixed time. When the lifting cone 5 needs to be lifted, the second driving motor 644 drives the lifting sleeve 642 to descend, then the electromagnet is electrified again, the inserting rod 641 and the lifting sleeve 642 are connected into a whole, finally the second driving motor 644 rotates reversely, the lifting sleeve 642 and the inserting rod 641 are lifted together, and the traction rope 63 and the counterweight cone 5 are pulled up until the counterweight cone 5 returns to the position before falling again and abuts against the bottom surface of the control box 61. During this pulling up process, the length of the inserted rod 641 pulled up the weight cone 5 is the falling distance of the weight cone 5.
When the hauling rope 63 is put down and pulled, enough margin is required to be ensured to the length of the hauling rope 63 all the time, so that the counterweight cone 5 can not be pulled by the hauling rope 63 in the falling and smashing process, and the free falling body can be kept.
However, as shown in fig. 3 and 5, when the insertion rod 641 pulls the traction rope 63, it is not possible to determine at what point the insertion rod 641 actually starts to pull the weight cone 5, and therefore, a low-elasticity rope is used for the traction rope 63, and a pressure sensor 646 is provided at a contact portion between the insertion rod 641 and the traction rope 63. When the pressure sensor 646 starts to bear force, which indicates that the residual amount of the traction rope 63 is used up, the weight cone 5 is really pulled to move upwards, the time at this moment is recorded, then the inserting rod 641 continues to move upwards until the weight cone 5 is reset, the time is recorded again, and the recording is completed. The hitting depth of the counterweight cone 5 is calculated through the recorded stress position of the insertion rod 641 and the time when the counterweight cone 5 resets, the rotating speed of the second driving motor 644 and the transmission ratio between the lifting sleeve 642 and the threaded rod 643, and at this time, the transmission ratio of the threaded rod 643 and the lifting sleeve 642 is extremely large, so that the hitting depth of the counterweight cone 5 can be obtained with high accuracy, and the flowability can be accurately judged. Meanwhile, the pressure detected by the pressure sensor 646 can also represent the adhesion of the mortar to the counterweight cone 5, and assist in judging the fluidity of the mortar.
In the process of raising the insertion rod 641, because the pulling rope 63 has a margin, it is difficult to ensure that the pulling rope 63 can always press the pressure sensor 646 to provide pressure, so that two oppositely inclined guide plates 645 are provided on the insertion rod 641, the two guide plates 645 and the insertion rod 641 form a chamber with a wide top and a narrow bottom, and the pressure sensor 646 is located at the bottom of the chamber. Therefore, when the pull cord 63 is pulled up by the insertion rod 641, the pull cord 63 can be brought into contact with the bottom of the chamber between the guide plates 645, and at this time, the pull cord 63 is stably held in contact with the pressure sensor 646.
The implementation principle of the embodiment 1 is as follows: when detection is carried out, firstly, the prepared mortar is added into the mortar container 2, and then the mortar container 2 is vibrated through the vibration mechanism 21, so that the mortar is uniformly placed in the mortar container 2;
then starting the first driving motor 4 to enable the guide rod 3 to rotate, enabling the lantern ring 41, the control mechanism 6 and the counterweight cone 5 to descend through the threaded matching of the guide rod 3 and the lantern ring 41, detecting the distance between the tip of the counterweight cone 5 and the mortar liquid level by a tip detector in the descending process until the tip of the counterweight cone 5 is in contact with the mortar liquid level in the mortar container 2, stopping the first driving motor 4, and keeping the contact between the tip of the counterweight cone and the mortar liquid level;
then the electromagnet is powered off, so that the insertion rod 641 rapidly falls along the vertical limiting groove 612, the traction rope 63 loses support, at the moment, the counterweight cone 5 and the traction rope 63 can freely fall, and the fluidity of the mortar is judged according to the falling and sinking depth of the counterweight cone 5 in the mortar;
finally, the second driving motor 644 rotates the threaded rod 643 to raise the lifting sleeve 642, so as to pull up the pulling rope 63 and the counterweight cone 5 until the counterweight cone 5 returns to the position before falling again, i.e., abuts on the bottom surface of the control box 61, and during this upward pulling process, the insertion rod 641 regards the actual pulled-up length of the counterweight cone 5 as the falling distance of the counterweight cone 5, and is used for indicating the fluidity of the mortar.
Example 2
The application provides a mechanism sand quality detection method, is applied to mechanism sand quality detection device, and the difference with embodiment 1 lies in, mechanism sand quality detection device still including set up in base 1 and be used for carrying out a plurality of shooting mechanism 7 that the multi-angle was shot to the whereabouts process of counter weight awl 5, shooting mechanism 7 uses the camera, and a plurality of shooting mechanism 7 are used for gathering a plurality of different visual angles of counter weight hammer respectively.
The method for detecting the quality of the machine-made sand comprises the following steps:
101. the weight cone 5 is detected.
Firstly, a standard image of the standard counterweight cone 5 is established, and the standard image can be obtained by shooting the standard counterweight cone 5 by a shooting mechanism and is stored in a database. And then, different visual angles of the weight-balancing cone 5 are acquired in real time, so that before detection, the image of the weight-balancing cone 5 acquired in real time is compared with the image of the standard weight-balancing cone 5 in the database, the weight-balancing cone 5 to be used is ensured to be in a standard state, and errors such as residual water stain after cleaning, uncleaned concrete slag and the like on the weight-balancing cone 5 are avoided. Such errors can be cleaned by workers without affecting the accuracy of the counterweight cone 5.
Meanwhile, the errors such as corrosion and deformation of the weight cone 5 can be found in the picture comparison, and at this time, the weight cone 5 needs to be replaced by a worker. The two errors give different prompts to the staff, for example, different decibels and different types of warning sounds are used for distinguishing, so that the staff can know how to process the error more quickly.
102. The shooting mechanism 7 shoots a plurality of images in the falling process of the counterweight cone 5, processes the images, and obtains the real-time kinetic energy of the counterweight cone 5 at each moment in the mortar entering process and the real-time stress condition of the counterweight cone 5 in the mortar entering process.
Specifically, the real-time acceleration of the weight cone 5 in the use process and the speed of the weight cone 5 at each moment are calculated according to the falling position of the weight cone 5 in a plurality of falling images and the preset shooting interval time of the falling images. Since the weight cone 5 starts to fall in a stationary state, the initial velocity is 0, the time interval between the capturing of the plurality of falling images can be set to 0.2s, and the distance between the position of the weight cone 5 in the falling image and the initial position can be measured from the falling image, the final velocity and the acceleration of the weight cone 5 in the first falling image of each capturing means 7 can be calculated, and the final velocity and the actual acceleration of the weight cone 5 in the next falling image can be calculated by using the velocity as the initial velocity, and finally the velocity and the actual acceleration of the weight cone 5 in each falling image can be obtained.
Similarly, when no mortar is placed in the mortar container 2, the local actual gravity acceleration can be measured in daily life, and the real-time kinetic energy of the counterweight cone 5 at each moment in the mortar entering process and the real-time stress condition of the counterweight cone 5 in the mortar entering process can be calculated according to the real-time speed of the counterweight cone 5, the mass of the counterweight cone 5 and the actual gravity acceleration.
In order to facilitate a user to obtain information, the control box 61 is further connected with a display screen 62, the real-time kinetic energy, the real-time stress condition and the real-time speed of the counterweight cone 5 are arranged into a table according to a time sequence, and the table is displayed to the user for assisting in judging the fluidity of the mortar. Therefore, a user can judge whether other factors disturbing the experimental result, such as uneven stirring, hard objects and the like, exist in the mortar according to the real-time stress condition of the counterweight cone 5.
In order to ensure the calculation accuracy, the above processing and calculation process of the picture does not need to be completed in the falling process, and the calculation can be continued after the measurement.
After the current actual gravity acceleration is measured, the qualified standard of the mortar flowability can be weighted and judged according to the ratio of the actual gravity acceleration to the standard acceleration, and errors are further eliminated.
103. And judging the fluidity of the machine-made sand according to the fluidity of the mortar, putting the machine-made sand into storage with different humidity according to the fluidity of the machine-made sand for storage, and marking the fluidity.
Specifically, the purpose of detecting the fluidity of the mortar is to detect the fluidity of the machine-made sand, if the fluidity is increased, the water requirement of the machine-made sand is decreased, otherwise, the fluidity is increased, and thus the test guidance is performed on the influence of the machine-made sand on the concrete slump in the subsequent production.
After the fluidity of the machine-made sand is measured, the machine-made sand with different fluidity is stored in separate bins so as to ensure that the machine-made sand can still keep the fluidity during detection during subsequent use, and the machine-made sand is convenient to directly take and select when the machine-made sand with high fluidity is needed.
For example, when applied to high-rise concrete transportation, the building for high-rise needs to pump the concrete to the top layer of the building, and therefore, the fluidity of the concrete to be pumped is required to be higher. Generally, when the concrete is used, more cement and water are added into the concrete to improve the fluidity, but the cost of the cement is high, which causes the manufacturing cost of the concrete to be high, so that the high-fluidity machine-made sand can be used to improve the fluidity of the finished concrete and reduce the cement demand of the concrete, thereby reducing the total cost.
The implementation principle of the embodiment 2 is as follows:
firstly, correcting the counterweight cone 5 before an experiment through a shooting mechanism 7, and ensuring that the counterweight cone 5 is a standard counterweight cone 5;
then, shooting the falling process of the counterweight cone 5 through a shooting mechanism 7, so as to calculate the real-time kinetic energy and real-time stress condition of the counterweight cone 5, and be used for assisting in judging the fluidity of the mortar;
and finally, judging the fluidity of the machine-made sand according to the fluidity of the mortar, and respectively storing according to the different fluidity so as to use the machine-made sand with different fluidity when different requirements are needed.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a mechanism sand quality detection device, includes base (1), connects in base (1) and holds mechanism sand mortar's mortar container (2), fixed connection in vertical guide bar (3) that upwards extends of base (1), along the gliding lantern ring (41) of guide bar (3), be connected with counterweight cone (5) on the lantern ring (41), counterweight cone (5) are located directly over mortar container (2), and the most advanced vertical downward setting of counterweight cone (5), its characterized in that:
the guide rod (3) is a screw rod, the lantern ring (41) is in threaded fit with the guide rod (3), and the base (1) is also connected with a first driving motor (4) for driving the guide rod (3) to rotate;
a control mechanism (6) for controlling the lifting of the counterweight cone (5) is also connected between the lantern ring (41) and the counterweight cone (5); the control mechanism (6) comprises a control box (61), a tip detector, a traction rope (63) and a rope pulling assembly (64), wherein the tip detector is connected to the control box (61) and detects the tip position of the counterweight cone (5), one end of the rope pulling assembly is connected to the bottom end of the counterweight cone (5), the rope pulling assembly is used for retracting the traction rope (63), and the bottom end of the counterweight cone (5) is located below the control box (61) and is abutted to the bottom surface of the control box (61).
2. The machine-made sand quality detection device of claim 1, wherein: one end of the traction rope (63) is connected to the bottom end of the counterweight cone (5), the other end of the traction rope (63) is connected to the control box (61), the pull rope assembly (64) comprises an insertion rod (641) which slides along the vertical direction, the insertion rod (641) is abutted to the traction rope (63), the end, connected with the control box (61), of the traction rope (63) is regarded as a starting point, the traction rope (63) extends upwards from the starting point to bypass the insertion rod (641), and is connected with the bottom end of the counterweight cone (5) at the end bypassing the insertion rod (641);
the pull rope assembly (64) further comprises a lifting sleeve (642) with an outer wall detachably connected with the insertion rod (641), a threaded rod (643) in threaded fit with the inner wall of the lifting sleeve (642), and a second driving motor (644) for driving the threaded rod (643) to rotate; still be equipped with in control box (61) and carry out vertical spacing's limiting plate to inserted bar (641), vertical spacing groove (612) have been seted up on limiting plate (611), inserted bar (641) pass vertical spacing groove (612) and go up and down along vertical spacing groove (612).
3. The machine-made sand quality detection device of claim 2, wherein: and a pressure sensor (646) for detecting the pressure of the pulling rope (63) on the insertion rod (641) is arranged at the abutting part of the insertion rod (641) and the pulling rope (63).
4. The machine-made sand quality detection device of claim 3, wherein: the insertion rod (641) is further provided with two inclined guide plates (645) for guiding the traction rope (63), the two guide plates (645) are inclined towards each other along the gravity direction, and the pressure sensor is located between the two guide plates (645) and abuts against the lowest position of the two guide plates (645).
5. The machine-made sand quality detection device of claim 1, wherein: and the mortar container (2) is also provided with a vibration mechanism (21) for shaking mortar.
6. A machine-made sand quality detection method is characterized in that: the machine-made sand quality detection device is applied to any one of claims 1 to 5, and further comprises a plurality of shooting mechanisms (7) which are arranged on the base (1) and used for shooting the falling process of the counterweight cone (5) in multiple angles;
the method comprises the following steps:
shooting the standard counterweight cone (5), and generating a standard image according to the shot image;
shooting a weight cone (5) used in real time, and generating a real-time image according to the shot image;
comparing the real-time image with the standard image, and judging whether the weight cone (5) used in real time has errors;
and sending a prompt to the user according to the judgment result.
7. The method of claim 6, further comprising:
acquiring a plurality of falling images continuously shot by a shooting mechanism (7) in the falling process of the counterweight cone (5);
calculating real-time acceleration of the weight cone (5) in the using process and the speed of the weight cone (5) at each moment according to the falling position of the weight cone (5) in the plurality of falling images and the preset shooting interval time of the falling images;
calculating real-time kinetic energy of the counterweight cone (5) at each moment in the process of entering mortar according to the real-time speed of the counterweight cone (5) and the mass of the counterweight cone (5);
calculating the real-time stress condition of the counterweight cone (5) in the mortar entering process according to the mass of the counterweight cone (5), the real-time acceleration and the local standard gravity acceleration;
and the real-time kinetic energy, the real-time stress condition and the real-time speed of the counterweight cone (5) are displayed to a user to assist in judging the fluidity of the mortar.
8. The method of claim 6, further comprising:
acquiring a plurality of falling images continuously shot by a shooting mechanism (7) in the falling process of the counterweight cone (5);
calculating local actual gravity acceleration according to the falling positions of the counterweight cones (5) in the plurality of falling images and the preset shooting interval time of the falling images;
and carrying out weighting judgment on the fluidity of the mortar according to the ratio of the actual gravity acceleration to the standard acceleration.
9. The method of claim 6, further comprising:
judging the fluidity of the machine-made sand according to the fluidity of the mortar;
and storing the machine-made sand in storage with different humidity according to the fluidity of the machine-made sand, and marking the fluidity.
10. The machine-made sand quality detection method according to claim 9, applied to high-rise transportation concrete, and characterized in that:
the proportion of cement to water in the high-fluidity concrete is reduced, and high-fluidity machine-made sand is selected to prepare the high-fluidity concrete.
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