CN109827812B - Automatic concrete sampling and test block forming method - Google Patents
Automatic concrete sampling and test block forming method Download PDFInfo
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- CN109827812B CN109827812B CN201910109053.XA CN201910109053A CN109827812B CN 109827812 B CN109827812 B CN 109827812B CN 201910109053 A CN201910109053 A CN 201910109053A CN 109827812 B CN109827812 B CN 109827812B
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Abstract
The invention belongs to the technical field of concrete manufacturing and detection, and particularly relates to a method for automatically sampling concrete and forming a test block, wherein A, a test block mould is placed below a sampling port of a storage hopper, and the concrete is discharged; b, directly feeding concrete into the test block mold from a sampling port; c, vibrating the test block mould to compact the concrete in the test block mould; and D, removing the test block mold, returning to the step A again, and sampling new concrete. The technical scheme of the invention adopts a mode of directly sampling from the storage hopper, can automatically form the concrete, solves the difficult problems from concrete mixing to field detection operation, and lays a good foundation for realizing the concrete quality control.
Description
Technical Field
The invention belongs to the technical field of concrete manufacturing and detection, and particularly relates to a method for automatically sampling concrete and forming a test block.
Background
The method is characterized in that the sample sending of the civil engineering test is a main way for showing the quality of the civil engineering, the sample sending of the concrete test block is an important component of the civil engineering test, and the sample sending of the concrete test block has strong timeliness and cannot be changed or supplemented after a test report is given out. Thus, once sample feeding becomes careless, considerable loss is caused to the project. The test block is an important mark for measuring the quality of the concrete member. Therefore, when a concrete member is poured, a certain amount of materials which are the same as the concrete are taken out to be made into a test block, and in addition, a concrete manufacturer also needs to sample and test the produced commercial concrete before leaving a factory.
At present, each link of the concrete quality control process faces the problems of more human resource occupation, lower production efficiency, poorer operation environment and larger influence of human factors on process control. The same problem is faced in the sampling and molding of concrete, how to conveniently and efficiently take out the concrete to be detected, and meanwhile, the manufacture of a standard test block is one of the key links, and the existing manual method needs to be improved urgently.
Disclosure of Invention
Based on the problems in the background art, the invention provides a concrete automatic sampling and test block forming method, which is used for automatically sampling and forming concrete, solving the difficult problems from concrete mixing to field detection operation and laying a good foundation for realizing concrete quality control.
In order to achieve the technical purpose, the invention provides a concrete automatic sampling and test block forming method, which comprises the following steps:
a, placing a test block mould below a sampling port of a storage hopper, and discharging concrete; the sampling opening is arranged on the side wall of the storage hopper and comprises a discharge barrel which penetrates through the side wall of the storage hopper, a discharge opening which corresponds to the position of the test block mold is arranged on the discharge barrel, a first air cylinder is installed at the other end of the discharge barrel, a material piston is connected to the end part of a piston rod of the first air cylinder, the material piston is in sliding fit with the discharge barrel, and the discharge opening is sealed under the normal state of the material piston. The test block mould is characterized in that a vertical pipe is connected to the bottom of the discharging barrel, a discharging hopper is connected to the lower end of the vertical pipe, the discharging hopper serves as a discharging hole, and the vertical projection of the discharging hopper is smaller than or equal to the area of the upper portion of the test block mould.
B, directly feeding concrete into the test block mold from a sampling port; the test block mould is arranged on a test block mould transmission device which comprises two under frames arranged in front and at back, wherein the chassis at the front side is connected with a front bracket made of two channel steels, the chassis at the rear side is connected with a rear bracket made of two channel steels, the front bracket and the rear bracket are respectively and rotatably connected with a roll shaft for supporting the test block mould, the front side and the rear side of the front bracket and the rear bracket are respectively provided with a baffle plate for preventing the test block mould from falling, a first pushing mechanism for pushing the test block mould from the front support to the rightmost end of the rear support is arranged at the front side of the right end of the front support, a discharge hole is arranged above the rightmost end of the rear support (12), the right side of the rear bracket is provided with a vibration mechanism, the right side of the vibration mechanism is provided with a second pushing mechanism, and a third pushing mechanism for pushing the test block mold from the rear support is installed on the front side of the left end of the rear support.
C, vibrating the test block mould to compact the concrete in the test block mould; the vibrating mechanism comprises a vibrating table, a material leaking hole is formed in the vibrating table, a pneumatic vibrator is mounted on the side wall of the vibrating table, and a drain pipe is connected to the bottom of the vibrating table.
D, removing the test block mould, returning to the step A again, and sampling new concrete; and D, connecting a scraper to the left edge of the lower end of the lower hopper, and trowelling and scraping off the excessive concrete on the upper surface of the test block mold by the scraper when the step D is carried out.
The test block is associated with the production batch of the concrete, so that the subsequent detection and evaluation are facilitated. The step C or the step D also comprises a step of numbering or coding the molded test block.
Preferably, in the step D, after the test block mold is removed, the sampling port is flushed before sampling a new batch of concrete.
As a preferred scheme, quantitatively discharging concrete in the step a, wherein the material piston is cylindrical, a through hole for containing the quantitative concrete is arranged in the middle of the material piston, and the volume of the through hole is preferably slightly larger than that of the test block mold, so that one-time sampling can be completed; during the blowing, go out the feed cylinder in the through-hole withdrawal of material piston, the through-hole passes through the drain hole, emits the material, and the one end that the piston rod was kept away from to the material piston this moment seals out the feed cylinder to concrete in avoiding the storage hopper gets into the drain hole, for avoiding remaining concrete in the feed cylinder, causes the influence to subsequent sample, after the material piston is got the material and is accomplished, the one end that the piston rod was kept away from to the material piston and the inside wall parallel and level of storage hopper, in order to seal out the feed cylinder.
The working principle of the invention is as follows: before working, the mixing station stores the mixed concrete in a storage hopper; when the test block mold pushing device works, a worker continuously places the test block molds at the left end of the front support, the front support can be higher left than right, so that under the action of gravity, the test block molds slide rightwards to the right end of the front support and are then blocked by a right baffle arranged at the right end of the front support, then the first pushing mechanism works, the second air cylinder drives the push plate to advance, after the push plate pushes the rightmost test block mold onto the vibrating table, the push plate returns to the original position, and the next test block mold slides to the right end of the front support; then the first air cylinder drives the material piston to move, so that concrete in the storage hopper enters the discharging barrel, and falls into the test block mold after passing through the vertical pipe and the discharging hopper, and when a proper amount of concrete falls, the first air cylinder drives the piston to move forwards, and discharging is stopped; then starting a pneumatic vibrator, and driving the vibration table to vibrate by the pneumatic vibrator so as to ensure that the concrete in the test block mold is compacted and vibrated flat; after the vibration is finished, a second cylinder in a second pushing mechanism drives a push plate to move forwards, the push plate pushes a test block mold onto a rear support, meanwhile, a scraper scrapes off redundant concrete on the test block mold, the rear support can be left low and right high, so that under the action of gravity, the test block mold slides leftwards from the right end of the rear support, a first pushing mechanism works simultaneously to push the next test block mold onto a vibrating table, the rear support is designed to be preferably long enough to accommodate the test block mold suitable for sampling concrete in one day, and certainly, the used test block mold can also be moved to a storage cabin to be transported and maintained, and the concrete operation is that the second cylinder in a third pushing mechanism drives the push plate to move forwards, and the test block mold is pushed into the storage cabin by the push plate; and repeating the steps to finish the transfer of the test block mold.
Drawings
The invention is further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic structural diagram of an embodiment of the present invention during operation;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic structural diagram of a second pushing mechanism in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a blanking mechanism and a vibrating mechanism in an embodiment of the present invention;
the main element symbols are as follows:
the test block mould comprises a base frame 1, a front support 11, a rear support 12, a roller shaft 13, a test block mould 2, a first pushing mechanism 31, a second pushing mechanism 32, a third pushing mechanism 33, a storage bin 4, a storage hopper 51, a discharging barrel 52, a first air cylinder 53, a piston 54, a vertical pipe 55, a discharging hopper 56, a scraper 57, a vibration table 61, a pneumatic vibrator 62, a sewage discharge pipe 63, a second air cylinder 71, a push plate 72 and a stop block 73.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following embodiments are provided to further illustrate the present invention.
As shown in fig. 1 to 4, the automatic concrete sampling and test block forming method of the present invention adopts a device comprising a blanking structure, wherein the blanking structure further comprises a material storage hopper 51, the material storage hopper 51 is used for temporarily storing the concrete stirred by the mixing station, the mixing station can discharge the concrete without delaying the continuous operation of the mixing station in the process of reversing the mixer truck to an alignment position, the mixing truck is stopped under the material storage hopper 51 after reaching the mixing station, and the concrete enters the mixing truck through an outlet at the lower end of the material storage hopper 51, so that the production efficiency of the mixing station is improved. In order to sample the concrete in the storage hopper 51, a discharging barrel 52 is connected to the side wall of the storage hopper 51, the discharging barrel 52 penetrates through the side wall of the storage hopper 51, a discharging hole corresponding to the position of the test block mold 2 is formed in the discharging barrel 52, a first air cylinder 53 is installed at the other end of the discharging barrel 52, a material piston 54 is connected to the end portion of a piston rod of the first air cylinder 53, a vertical pipe 55 is connected to the bottom of the discharging barrel 52, a discharging hopper 56 is connected to the lower end of the vertical pipe 55, the material piston 54 is in sliding fit with the discharging barrel 52, and the discharging hole is closed under the normal state of the material piston 54, the preferable material piston 54 is in a cylindrical shape, and a through hole for containing a fixed amount of concrete is formed in the middle of the material piston 54.
The specific sampling and test block forming method comprises the following steps:
a, placing a test block mold 2 below a discharge hole of a storage hopper 51 and discharging a proper amount of concrete to be sampled, wherein a concrete legal system engineer is that a through hole of a material piston 54 extends into the storage hopper 51 when the concrete is taken, and one end, close to a piston rod, of the material piston 54 closes a discharge barrel 52 so as to prevent the concrete in the storage hopper 51 from entering the discharge hole; when discharging, the through hole of the material piston 54 retracts into the middle discharging barrel 52, the through hole discharges materials through the discharging hole, at the moment, one end of the material piston 54, which is far away from the piston rod, seals the discharging barrel 52 so as to prevent concrete in the storage hopper 51 from entering the discharging hole, and after the material piston 54 finishes discharging, one end of the material piston 54, which is far away from the piston rod, is flush with the inner side wall of the storage hopper 51 so as to seal the discharging barrel 52;
b, directly feeding concrete into the test block mold 2 from the discharge hole; specifically, concrete in the material piston 54 continuously falls into the test block mold 2 through the vertical tube 55 and the blanking hopper 56, and when a proper amount of concrete falls, the first air cylinder 53 drives the material piston 54 to move forward to stop blanking;
c, vibrating the test block mold 2 to compact the concrete in the test block mold 2, in order to vibrate the test block mold 2 filled with the concrete, a vibrating mechanism is installed on the right side of the rear support 12, the vibrating mechanism comprises a vibrating table 61, a pneumatic vibrator 62 is installed on the side wall of the vibrating table 61, the vibrating table 61 and the pneumatic vibrator 62 are both in the prior art, the specific structure and the working principle of the vibrating table are not repeated herein, the difference is that an inlet for the test block mold 2 to enter is formed in the front side of the upper end of the vibrating table 61, an outlet for the test block mold 2 to discharge is formed in the left side of the upper end of the vibrating table 61, when the vibrating table works, the pneumatic vibrator 62 is started after the concrete falls into the test block mold 2, and the pneumatic vibrator 62 drives the vibrating table 61 to vibrate, so that the concrete in the test block mold 2 is vibrated to be flat;
and D, removing the test block mold 2, returning to the step A again, and sampling new concrete. In order to discharge the vibrated test block mold 2, the second pushing mechanism 32 is installed on the right side of the vibration table 61, the second pushing mechanism 32 includes a second cylinder 71, and a push plate 72 is connected to the front end of a piston rod of the second cylinder 71. After the vibration is finished, the second cylinder 71 in the second pushing mechanism 32 drives the push plate 72 to move forward, the push plate 72 is discharged from the outlet at the upper end of the vibrating table 61, and after the test block mold 2 is pushed onto the rear support 12, the push plate 72 is reset.
In the step C or the step D, a step of numbering or printing a code on the molded test block may be added, for example, an ink jet printer is used to spray the number on the test block, or information related to the production batch of the concrete is directly coded into the two-dimensional code label, and the two-dimensional code label is placed on the surface of the test block.
In particular, the present invention relates to a method for producing,
preferably, a scraper 57 is connected to the left edge of the lower end of the lower hopper 56, and after vibration, when the test block mold 2 is removed in step D and the test block mold 2 is discharged from the vibration mechanism, the scraper 57 can scrape off excess concrete on the test block mold 2, so that the concrete test block can be manufactured more accurately; the scraped concrete falls on the vibration table 61. In order to clean the vibration table 61, material leakage holes are uniformly formed in the vibration table 61, and a drain pipe 63 is connected to the bottom of the vibration table 61. After long-time use, the vibrating table 61 can be cleaned, concrete and sewage are discharged from the drain pipe 63 after passing through the material leakage hole and enter a tank car below, so that the pollution of materials to the field environment is avoided, and the waste is reduced.
In actual production, because the performance parameters of the batches of concrete are different, other batches of concrete cannot be mixed in the concrete of each batch during sampling, and the performance parameters of the concrete test block can be influenced. In order to prevent each batch of concrete from being mixed with other batches of concrete, one end of the material piston 54 close to the storage hopper 51 is of an arc structure matched with the inner wall of the storage hopper 51. After each blanking, the material piston 54 moves to the arc-shaped structure to be flush with the inner wall of the storage hopper 51, so that the concrete in the discharging barrel 52 can be completely discharged into the storage hopper 51, and the concrete of the batch is prevented from remaining in the discharging barrel 52.
In order to facilitate the transportation of the test block mold 2 to the vibrating table 61 and the storage of the vibrated test block mold 2, the test block mold further comprises two underframe 1 arranged in front and at back, wherein the underframe 1 at the front side is connected with a front support 11 made of two parallel channel steel, a plurality of roll shafts 13 used for transporting the test block mold 2 are rotatably connected between the two channel steel, the underframe 1 at the back side is connected with a back support 12, the structure of the back support 12 is the same as that of the front support 11 and is also made of two parallel channel steel, a plurality of roll shafts 13 used for transporting the test block mold 2 are also rotatably connected between the two channel steel of the back support 12, and baffle plates used for preventing the test block mold 2 from falling off are arranged at the front side and the back side of the front support 11 and the back support 12. In order to facilitate the sliding of the test block mold 2 on the roller shaft 13, the left end of the front support 11 is higher than the right end, the right end of the front support 11 is connected with a right baffle, a worker sequentially puts the empty test block molds 2 at the left end of the front support 11, and due to the action of gravity, the test block mold 2 slides rightwards to the right end of the front support 11 and is blocked by the right baffle. The right-hand member of after-poppet 12 is higher than the left end, and the left end of after-poppet 12 is connected with left baffle, and under the effect of gravity, test block mould 2 can slide on fore-stock 11 and after-poppet 12 automatically to reduce external thrust, can realize the transport to test block mould 2, reach the purpose of energy saving.
In order to convey the empty test block mold 2 on the front support 11 to the vibration table 61, a first pushing mechanism 31 is installed on the front side of the right end of the front support 11, the first pushing mechanism 31 comprises a second air cylinder 71, and the front end of the piston rod of the second air cylinder 71 is connected with a push plate 72. When the first pushing mechanism 31 works, the second cylinder 71 drives the push plate 72 to advance, after the push plate 72 pushes the test block mold 2 at the rightmost end to the vibrating table 61 through the inlet at the upper end of the vibrating table 61, the push plate 72 returns to the original position, and the next test block mold 2 slides to the right end of the front support 11 to wait for the next working cycle. In the process that the push plate 72 returns to the original position, in order to prevent the next test block mold 2 from sliding rightwards to the right end of the front support 11 to influence the reset of the push plate 72, in the embodiment, the left end of the push plate 72 is connected with the stop block 73, so that in the process that the push plate 72 returns to the original position, the next test block mold 2 can only slide rightwards for a short distance, and then the stop block 73 blocks the next test block mold 2 to prevent the next test block mold 2 from continuously sliding rightwards, so that the reset of the stop block 73 is facilitated; in fact, the baffle plate 73 may be designed such that the left side wall thereof is flush with the left side wall of the rightmost test block mold 2, and when the test block mold 2 is pushed onto the vibration table 61 and the push plate 72 is reset, the next test block mold 2 does not slide a little rightward and is substantially kept still, which facilitates the reset of the push plate 72.
The third pushing mechanism 33 is installed on the front side of the left end of the rear support 12, the third pushing mechanism 33 comprises a second cylinder 71, the front end of a piston rod of the second cylinder 71 is connected with a push plate 72, and the rear side of the left end of the rear support 12 is provided with a storage bin 4. When the test block mold 2 is pushed onto the rear support 12 from the vibrating table 61, the test block mold 2 slides leftwards from the right end to the leftmost end of the rear support 12 under the action of gravity and is blocked by the left baffle, the second cylinder 71 in the third pushing mechanism 33 drives the push plate 72 to move forwards, and the push plate 72 pushes the test block mold 2 into the storage bin 4;
in practical production, in the above embodiment, the first pushing mechanism 31 pushes the test block mold 2 from the front support 11 onto the vibration table 61, the second pushing mechanism 32 pushes the test block mold 2 from the vibration table 61 onto the rear support 12, and the third pushing mechanism 33 pushes the test block mold 2 from the rear support 12 onto the storage bin 4, which are performed simultaneously for different test block molds 2, so as to achieve the purposes of saving production time and improving production efficiency.
In the above embodiment, since the position of the test block mold 2 is kept unchanged all the time when the test block mold 2 is discharged from the left end of the rear support 12, and the position of each storage cell in the storage bin 4 for storing the test block mold 2 is different, the test block mold 2 can be put into the storage bin 4 manually or by other means in actual production.
The concrete automatic sampling and forming device provided by the invention is described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The automatic concrete sampling and test block forming method is characterized by comprising the following steps of:
a, placing a test block mould (2) below a sampling port of a storage hopper (51) and discharging concrete;
b, directly feeding concrete into the test block mold (2) from a sampling port;
c, vibrating the test block mould (2) to compact the concrete in the test block mould (2);
d, removing the test block mould (2), returning to the step A again, and sampling new concrete;
in the step A, the sampling port is arranged on the side wall of the storage hopper (51) and comprises a discharge barrel (52) penetrating through the side wall of the storage hopper (51), a discharge hole corresponding to the test block mold (2) is formed in the discharge barrel (52), a first air cylinder (53) is arranged at the other end of the discharge barrel (52), a material piston (54) is connected to the end part of a piston rod of the first air cylinder (53), the material piston (54) is in sliding fit with the discharge barrel (52), and the discharge hole is closed by the material piston (54) in a normal state;
in the step A, the concrete is discharged quantitatively, the material piston (54) is cylindrical, a through hole for containing the quantitative concrete is formed in the middle of the material piston, the through hole of the material piston extends into the material storage hopper (51) during material taking, and one end, close to the piston rod, of the material piston seals the discharge barrel (52) so as to prevent the concrete in the material storage hopper (51) from entering the discharge hole; during the blowing, go out feed cylinder (52) in the through-hole withdrawal of material piston, the material is emitted through the drain hole to the through-hole, and the one end that the piston rod was kept away from to the material piston this moment seals out feed cylinder (52) to concrete in avoiding storage hopper (51) gets into the drain hole.
2. The automatic concrete sampling and test block molding method according to claim 1, characterized in that: go out feed cylinder (52) bottom and be connected with standpipe (55), standpipe (55) lower extreme is connected with down hopper (56) of prismoid shape, and this down hopper (56) is as the drain hole, and its vertical projection is less than or equal to the upper portion area of test block mould (2).
3. The automatic concrete sampling and test block molding method according to claim 1, characterized in that: the test block mould (2) is placed on the test block mould transmission device, the test block mould transmission device comprises two bottom frames (1) arranged in the front and the back, wherein a front support (11) made of two channel steel is connected onto the bottom frame (1) at the front side, a back support (12) made of two channel steel is connected onto the bottom frame (1) at the back side, a roller shaft (13) used for supporting the test block mould is respectively connected onto the front support (11) and the back support (12) in a rotating manner, baffle plates for preventing the test block mould (2) from falling off are arranged on the front side and the back side of the front support (11) and the back support (12), a first pushing mechanism (31) for pushing the test block mould (2) from the front support (11) to the bottom end of the back support (12) is arranged on the front side of the right end of the front support (11), a discharging hole is arranged above the bottom end of the back support (12), a vibrating mechanism is arranged on the right side of the back support (12), second pushing mechanism (32) is installed on the right side of the vibrating mechanism, and third pushing mechanism (33) which pushes down test block die (2) from the rear support is installed on the front side of the left end of rear support (12).
4. The automatic concrete sampling and test block molding method according to claim 2, characterized in that: and a scraper (57) is connected to the left edge of the lower end of the discharging hopper (56), and when the step D is carried out, the scraper (57) screeds and scrapes off the excessive concrete on the upper surface of the test block mold (2).
5. The automatic concrete sampling and test block molding method according to claim 3, wherein: the vibrating mechanism comprises a vibrating table (61), a material leakage hole is formed in the vibrating table (61), a pneumatic vibrator (62) is installed on the side wall of the vibrating table (61), and a drain pipe (63) is connected to the bottom of the vibrating table (61).
6. The automatic concrete sampling and test block molding method according to claim 1, characterized in that: and D, removing the test block mold (2) and washing the sampling port.
7. The automatic concrete sampling and test block molding method according to claim 1, characterized in that: after the material piston finishes material taking, one end of the material piston, which is far away from the piston rod, is flush with the inner side wall of the material storage hopper (51) so as to seal the material outlet barrel (52).
8. The automatic concrete sampling and test block molding method according to claim 1, characterized in that: and the step C or the step D also comprises a step of numbering or coding the formed test blocks so as to associate the test blocks with the production batches of the concrete.
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| CN113418780B (en) * | 2021-06-11 | 2023-06-02 | 重庆建工建材物流有限公司 | Concrete strength test system |
| CN113687052B (en) * | 2021-07-16 | 2024-04-02 | 鞍山三冶建筑工程有限公司 | Automatic production detection system and method for concrete test block |
| CN114791375B (en) * | 2022-05-04 | 2022-10-04 | 浙江致远工程管理有限公司 | Intelligent equipment for building material inspection |
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