CN109490010B - Foundation pit sampling system adaptable to different soil environments - Google Patents
Foundation pit sampling system adaptable to different soil environments Download PDFInfo
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- CN109490010B CN109490010B CN201811513204.XA CN201811513204A CN109490010B CN 109490010 B CN109490010 B CN 109490010B CN 201811513204 A CN201811513204 A CN 201811513204A CN 109490010 B CN109490010 B CN 109490010B
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
Abstract
The invention discloses a foundation pit sampling system suitable for different soil environments, which comprises a bottom plate, a sampling device and a sampling device, wherein the bottom plate is provided with a plurality of sampling holes; the number of the lifting bases is two, and the tops of the two lifting bases are arranged on two sides of the bottom plate; the number of the fixed blocks is two, the bottoms of the two fixed blocks are respectively and fixedly connected with two sides of the top of the bottom plate, and the two fixed blocks are both in threaded connection with a first screw rod through threaded holes; the number of the sliding plates is two, and one sides of the two sliding plates, which are opposite to each other, are respectively and rotatably connected with one ends, opposite to the two first screw rods. This foundation ditch sampling system of adaptable different soil environment makes two lifting pedestal rise respectively or drop different height through extending two electronic poles respectively, makes the bottom plate be in the horizontality, can offset the influence of ground slope, adapts to the sample work on unevenness ground, is applicable to the sample work of different function soil environment.
Description
Technical Field
The invention relates to the technical field of soil sampling, in particular to a foundation pit sampling system suitable for different soil environments.
Background
The foundation pit refers to a space below the ground excavated for the construction of a building foundation and a basement. The foundation pit belongs to temporary engineering and has the function of providing a space so that the basic masonry operation can be carried out according to the position specified by design. And excavating soil pits at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. Before excavation, an excavation scheme is determined according to geological and hydrological data and by combining the conditions of buildings nearby the site, the soil of the foundation pit needs to be sampled and researched during excavation, and the soil condition of the foundation pit is known so as to guarantee the construction quality of the deep foundation pit and guarantee the quality of the whole building engineering.
In the current way, along with the continuous deep digging of foundation ditch, need the repeated sample, carry out analysis by detection to soil, know the inside soil property situation of foundation ditch, go on smoothly in order to guarantee the foundation ditch construction, along with the deep digging of foundation ditch, soil environment is constantly changing, the condition is complicated more deeply, current sampling device can not adapt to soil environment's change, often can't use smoothly when soil environment changes, make the device of other samplings need to be changed again in sample work, delay sample work efficiency, sample work is very inconvenient.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a foundation pit sampling system which can adapt to different soil environments, and solves the problem that a sampling device cannot adapt to the process that the soil environment is changed from hard to soft.
In order to achieve the purpose, the invention is realized by the following technical scheme: a foundation pit sampling system adaptable to different soil environments comprises a bottom plate;
the number of the lifting bases is two, and the tops of the two lifting bases are arranged on two sides of the bottom plate;
the number of the fixed blocks is two, the bottoms of the two fixed blocks are respectively and fixedly connected with two sides of the top of the bottom plate, and the two fixed blocks are both in threaded connection with a first screw rod through threaded holes;
the number of the sliding plates is two, the opposite sides of the two sliding plates are respectively and rotatably connected with one ends of the two first screw rods, the tops of the opposite sides of the two sliding plates are fixedly connected with motors, the surface of an output shaft of each motor is fixedly connected with a first belt pulley, and the surface of each first belt pulley is in transmission connection with a second belt pulley through a belt;
the number of the V-shaped rods is two, the opposite sides of the V-shaped rods are respectively and rotatably connected with the opposite sides of the two sliding plates, and gears are rotatably connected to the two ends of the left side of each V-shaped rod;
one side of the sampling cylinder is meshed with one side of the surface of the gear through a tooth block, and a partition plate is fixedly connected between the two sides of the inner wall of the sampling cylinder;
the top end of the sliding rod penetrates through the bottom of the partition plate and extends to the top of the partition plate, and one end, located at the top of the partition plate, of the sliding rod penetrates through the top of the inner wall of the sampling tube and extends to the outside of the sampling tube;
the bottom end of the second screw rod penetrates through the top of the sliding rod and extends to the bottom of the sliding rod, one end, located at the bottom of the sliding rod, of the second screw rod is rotatably connected with a piston plate, one end, located at the top of the sliding rod, of the second screw rod is fixedly connected with a second rotating handle, rotating pieces are fixedly connected to the left side of the top of the second rotating handle and the top of the right side of the sampling cylinder, and handles are fixedly connected to one sides of the two rotating pieces;
the right end of the positioning rod is fixedly connected with the right side of the inner wall of the sampling cylinder and positioned at the top of the partition plate;
the right side of the thread block is fixedly connected with the top of the left side of the sampling cylinder.
Further, the lifting base comprises a connecting plate, a first supporting rod is rotatably connected to the right side of the top of the connecting plate, a second supporting rod is rotatably connected to the middle of the first supporting rod through a rotating shaft, sliding blocks are rotatably connected to the left ends of the second supporting rod and the first supporting rod respectively, a first sliding groove is formed in the top of the connecting plate, a supporting plate is fixedly connected to the left side of the top of the connecting plate, and an electric rod is fixedly connected to the right side of the supporting plate.
Furthermore, the bottom of the surface of the sliding block at the left end of the second supporting rod is connected with the surface of the inner wall of the first sliding groove in a sliding mode, and the right end of the electric rod is fixedly connected with the left side of the rotating shaft.
Furthermore, the right end of the second support rod is rotatably connected with the right side of the bottom plate, and the top of the surface of the sliding block at the left end of the first support rod is slidably connected with the right side of the bottom plate through a second sliding groove.
Further, the inside of fixed block is provided with the internal thread, the surface of internal thread and the surface threaded connection of first lead screw, two the equal fixedly connected with first turning handle of one end that first lead screw carried on the back mutually.
Further, a stabilizer bar is fixedly connected between two opposite sides of the V-shaped rod, a telescopic rod is rotatably connected to the bottom of the V-shaped rod, the bottom end of the telescopic rod is rotatably connected with the left side of the sliding plate, and a supporting spring is arranged on the surface of the telescopic rod.
Further, the surface of piston plate has seted up the annular, be provided with the sealing ring between the surface of annular and the surface of sampler barrel inner wall.
Further, the rotation piece includes a rotation fixing plate, a rotation plate and a fixture block, the bottom fixed connection of fixing plate is in the left side at second turning handle top, the top of fixing plate is connected with the rotation plate through the pivot rotation, one side of rotation plate and the one end fixed connection of handle, one side fixedly connected with fixture block at rotation plate top.
Further, the surface of screw block inner wall has the threaded rod through thread groove threaded connection, the right-hand member of threaded rod runs through the sampling tube and extends to the inside of sampling tube, the threaded rod is located the inside one end rotation of sampling tube and is connected with the chucking board with slide bar looks adaptation.
Further, one end, located on the left side of the thread block, of the threaded rod is fixedly connected with a knob, and an anti-skidding groove is formed in the surface of the knob.
Compared with the prior art, the invention has the beneficial effects that:
(1) this foundation ditch sampling system of adaptable different soil environment through extending two electronic poles respectively, makes two lifting pedestal rise respectively or drop different height, makes the bottom plate be in the horizontality, can offset the influence of ground slope, adapts to the sample work on unevenness ground, is applicable to the sample work of different function soil environment.
(2) This foundation ditch sampling system of adaptable different soil environment drives first belt pulley through the motor and rotates, drives the second belt pulley and rotates, drives gear revolve, drives the sampler barrel and goes deep into soil sample, and the motor is rotated to the direction, takes out the sampler barrel, and mechanized operation sample has reduced intensity of labour and cost of labor, and sample work is light swift more.
(3) This foundation ditch sampling system of adaptable different soil environment through the scale that observes the surface setting of slide bar, can easily master the degree of depth of sample according to the scale, and the degree of depth of accurate control sample has improved the sample precision.
(4) This foundation ditch sampling system of adaptable different soil environment rotates through rotating and packs up the handle, and portable removes, directly opens during the use, is convenient for rotate the second turning handle, and increase turning moment, the second lead screw of being convenient for drive the piston board and release soil sample, and it is more convenient to use.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the lifting base structure of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of the invention at B of FIG. 1.
In the figure: 1-bottom plate, 2-lifting base, 201-connecting plate, 202-first supporting rod, 203-rotating shaft, 204-second supporting rod, 205-sliding block, 206-first sliding groove, 207-electric rod, 208-supporting plate, 3-fixing block, 4-first screw rod, 5-first rotating handle, 6-sliding plate, 601-telescopic rod, 602-supporting spring, 7-V-shaped rod, 701-stabilizing rod, 8-gear, 801-tooth block, 9-motor, 10-first belt pulley, 11-second belt pulley, 12-sampling cylinder, 13-clapboard, 14-sliding rod, 15-piston plate, 16-second screw rod, 17-second rotating handle, 18-rotating piece, 19-handle, 20-positioning rod, 21-thread block, 22-threaded rod, 23-clamping plate and 24-knob.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a foundation pit sampling system suitable for different soil environments comprises a bottom plate 1, wherein a sampling port with the diameter larger than that of a sampling cylinder 12 is formed in the middle of the bottom plate 1;
the number of the lifting bases 2 is two, and the tops of the two lifting bases 2 are arranged on two sides of the bottom plate 1;
the number of the fixed blocks 3 is two, the bottoms of the two fixed blocks 3 are respectively and fixedly connected with two sides of the top of the bottom plate 1, and the two fixed blocks 3 are both in threaded connection with a first screw rod 4 through threaded holes;
the number of the sliding plates 6 is two, the opposite sides of the two sliding plates 6 are respectively rotatably connected with one ends of the two first screw rods 4, the top parts of the opposite sides of the two sliding plates 6 are fixedly connected with motors 9, the motors 9 can rotate forwards and reversely, the surface of an output shaft of each motor 9 is fixedly connected with a first belt pulley 10, and the surface of each first belt pulley 10 is connected with a second belt pulley 11 through belt transmission;
the number of the V-shaped rods 7 is two, the two V-shaped rods 7 are arranged oppositely, one opposite side of each V-shaped rod 7 is rotatably connected with one opposite side of each sliding plate 6, and two ends of the left side of each V-shaped rod 7 are rotatably connected with a gear 8;
a knife edge is arranged at the bottom of the sampling cylinder 12, so that soil can be conveniently inserted into the soil for soil sampling, one side of the sampling cylinder 12 is meshed with one side of the surface of the gear 8 through a tooth block 801, and a partition plate 13 is fixedly connected between two sides of the inner wall of the sampling cylinder 12;
the surface of the sliding rod 14 is provided with scales, so that the scales can be directly observed conveniently to know the sampling depth, accurate sampling is carried out, and the sampling precision is improved, the top end of the sliding rod 14 penetrates through the bottom of the partition plate 13 and extends to the top of the partition plate 13, and one end, located at the top of the partition plate 13, of the sliding rod 14 penetrates through the top of the inner wall of the sampling cylinder 12 and extends to the outside of the sampling cylinder 12;
the second screw rod 16 rotates, the piston plate 15 is pushed to push out the soil, the rotation distance of the second screw rod 16 is limited, the soil cannot be pushed out completely at one time, the soil can be sampled respectively, the bottom end of the second lead screw 16 penetrates through the top of the slide bar 14 and extends to the bottom of the slide bar 14, one end of the second screw rod 16, which is positioned at the bottom of the sliding rod 14, is rotatably connected with a piston plate 15, one end of the second screw rod 16, which is positioned at the top of the sliding rod 14, is fixedly connected with a second rotating handle 17, the left side of the top of the second rotating handle 1 and the top of the right side of the sampling cylinder 12 are fixedly connected with rotating pieces 18, one sides of the two rotating pieces 18 are fixedly connected with handles 19, the rotating pieces 18 enable the handles 19 to be convenient to fold and unfold and convenient to carry the device, and the handles 19 at the top of the right side of the sampling cylinder 12 enable the handles 19 of the second rotating handle 17 to be convenient for holding the sampling cylinder 12 when the second screw rod 16 rotates;
the right end of the positioning rod 20 is fixedly connected with the right side of the inner wall of the sampling cylinder 12 and the top of the partition plate 13, and the left end of the positioning rod 20 is slidably connected with the right side of the sliding rod 14 through a third sliding chute, so that the sliding rod 14 cannot deflect when sliding up and down, and errors are avoided;
the right side of the thread block 21 is fixedly connected with the top of the left side of the sampling tube 12.
The lifting base 2 comprises a connecting plate 201, a first supporting rod 202 is rotatably connected to the right side of the top of the connecting plate 201, a second supporting rod 204 is rotatably connected to the middle of the first supporting rod 202 through a rotating shaft 203, sliding blocks 205 are rotatably connected to the left ends of the second supporting rod 204 and the first supporting rod 202, a first sliding groove 206 is formed in the top of the connecting plate 201, a supporting plate 208 is fixedly connected to the left side of the top of the connecting plate 201, an electric rod 207 is fixedly connected to the right side of the supporting plate 208, and the electric rod 207 can extend and shorten under the action of electric power.
The bottom of the surface of the sliding block 205 at the left end of the second support rod 204 is slidably connected with the surface of the inner wall of the first sliding groove 206, and the right end of the electric rod 207 is fixedly connected with the left side of the rotating shaft 203.
The right end of the second support rod 204 is rotatably connected with the right side of the bottom plate 1, and the top of the surface of the sliding block 205 at the left end of the first support rod 202 is slidably connected with the right side of the bottom plate 1 through a second sliding groove.
The inside of fixed block 3 is provided with the internal thread, the internal thread surface and the surface threaded connection of first lead screw 4, two the equal fixedly connected with first turning handle 5 of one end that first lead screw 4 carried on the back mutually.
The stabilizing rod 701 is fixedly connected between two opposite sides of the V-shaped rod 7, the bottom of the V-shaped rod 7 is rotatably connected with a telescopic rod 601, the bottom end of the telescopic rod 601 is rotatably connected with the left side of the sliding plate 6, and a supporting spring 602 is arranged on the surface of the telescopic rod 601.
An annular groove is formed in the surface of the piston plate 15, and a sealing ring is arranged between the surface of the annular groove and the surface of the inner wall of the sampling tube 12.
The surface of screw block 21 inner wall has threaded rod 22 through thread groove threaded connection, the right-hand member of threaded rod 22 runs through sampler barrel 12 and extends to the inside of sampler barrel 12, threaded rod 22 is located the inside one end rotation of sampler barrel 12 and is connected with the chucking plate 23 with slide bar 14 looks adaptation, chucking plate 23 is the arc, and the radius on chucking plate 23 inner wall surface slightly is greater than the radius of slide bar 14.
One end of the threaded rod 22, which is positioned on the left side of the threaded block 21, is fixedly connected with a knob 24, and the surface of the knob 24 is provided with an anti-skid groove.
In operation, the foundation pit sampling system adaptable to different soil environments contacts the bottom of the connecting plate 201 with the ground, extends two electric rods 207 synchronously, drives two rotating shafts 203 to move along opposite sides, drives the sliding blocks at one ends of the first supporting rod 202 and the second supporting rod 204 to slide, drives the bottom plate 1 to move upwards, extends two electric rods 207 asynchronously when the ground is different in height, causes two lifting bases 2 to have different heights, causes two sides of the bottom plate 1 to be in the same horizontal state, puts the sampling cylinder 12 into the sampling port of the bottom plate 1, synchronously and reversely rotates the two first rotating handles 5, drives the first screw rod 4 to rotate, drives the sliding plate 6 to move relatively or reversely, causes the gear 8 to engage with the toothed block 801, starts the motor 9, drives the first belt pulley 10 to rotate, drives the second belt pulley 11 to rotate, drives the gear 8 to rotate, drives the sampling cylinder 12 to move downwards, samples soil, the degree of depth of sample is known according to the scale on slide bar 14, rotate knob 24, drive threaded rod 21 and rotate, drive chucking board 23 and move to the surface of slide bar 14, the surface of the inner wall chucking slide bar 14 up to chucking board 23, reverse rotation motor 9, drive sampler barrel 12 and move upwards, the inside sealing ring effect on piston plate 15 surface of sampler barrel 12 is in the negative pressure down, make soil can preserve inside sampler barrel 12, it is vertical with handle 19 to rotate piece 18 on second turning handle 17, wave handle 19, drive second lead screw 16 and rotate, drive piston plate 15 and move downwards, release soil sample.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a foundation ditch sampling system of adaptable different soil environment which characterized in that: comprises a bottom plate;
the number of the lifting bases is two, and the tops of the two lifting bases are arranged on two sides of the bottom plate;
the number of the fixed blocks is two, the bottoms of the two fixed blocks are respectively and fixedly connected with two sides of the top of the bottom plate, and the two fixed blocks are both in threaded connection with a first screw rod through threaded holes;
the number of the sliding plates is two, the opposite sides of the two sliding plates are respectively and rotatably connected with one ends of the two first screw rods, the tops of the opposite sides of the two sliding plates are fixedly connected with motors, the surface of an output shaft of each motor is fixedly connected with a first belt pulley, and the surface of each first belt pulley is in transmission connection with a second belt pulley through a belt;
the number of the V-shaped rods is two, the opposite sides of the V-shaped rods are respectively and rotatably connected with the opposite sides of the two sliding plates, and gears are rotatably connected to the two ends of the left side of each V-shaped rod;
one side of the sampling cylinder is meshed with one side of the surface of the gear through a tooth block, and a partition plate is fixedly connected between the two sides of the inner wall of the sampling cylinder;
the top end of the sliding rod penetrates through the bottom of the partition plate and extends to the top of the partition plate, and one end, located at the top of the partition plate, of the sliding rod penetrates through the top of the inner wall of the sampling tube and extends to the outside of the sampling tube;
the bottom end of the second screw rod penetrates through the top of the sliding rod and extends to the bottom of the sliding rod, one end, located at the bottom of the sliding rod, of the second screw rod is rotatably connected with a piston plate, one end, located at the top of the sliding rod, of the second screw rod is fixedly connected with a second rotating handle, rotating pieces are fixedly connected to the left side of the top of the second rotating handle and the top of the right side of the sampling cylinder, and handles are fixedly connected to one sides of the two rotating pieces;
the right end of the positioning rod is fixedly connected with the right side of the inner wall of the sampling cylinder and positioned at the top of the partition plate;
the right side of the thread block is fixedly connected with the top of the left side of the sampling cylinder, the lifting base comprises a connecting plate, the right side of the top of the connecting plate is rotatably connected with a first supporting rod, the middle part of the first supporting rod is rotatably connected with a second supporting rod through a rotating shaft, the left ends of the second supporting rod and the first supporting rod are both rotatably connected with a sliding block, the top of the connecting plate is provided with a first sliding chute, the left side of the top of the connecting plate is fixedly connected with a supporting plate, the right side of the supporting plate is fixedly connected with an electric rod, the bottom of the surface of the sliding block positioned at the left end of the second supporting rod is connected with the surface of the inner wall of the first sliding chute in a sliding way, the right end of the electric rod is fixedly connected with the left side of the rotating shaft, the right end of the second supporting rod is rotatably connected with the right side of the bottom plate, the top of the surface of the sliding block positioned at the left end of the first supporting rod is in sliding connection with the right side of the bottom plate through a second sliding groove.
2. A foundation pit sampling system adaptable to different soil environments as set forth in claim 1, wherein: the inside of fixed block is provided with the internal thread, the threaded surface of internal thread and the surface threaded connection of first lead screw, two the equal fixedly connected with first turning handle of one end that first lead screw carried on the back mutually.
3. A foundation pit sampling system adaptable to different soil environments as set forth in claim 1, wherein: the utility model discloses a slide board, including V-shaped pole, slide board, fixed connection has the stabilizer bar between the relative both sides of V-shaped pole, the bottom of V-shaped pole is rotated and is connected with the telescopic link, the bottom of telescopic link is rotated with the left side of slide and is connected, the surface of telescopic link is provided with supporting spring.
4. A foundation pit sampling system adaptable to different soil environments as set forth in claim 1, wherein: the surface of the piston plate is provided with a ring groove, and a sealing ring is arranged between the surface of the ring groove and the surface of the inner wall of the sampling tube.
5. A foundation pit sampling system adaptable to different soil environments as set forth in claim 1, wherein: the rotating part comprises a rotating fixing plate, a rotating plate and a clamping block, the bottom of the fixing plate is fixedly connected to the left side of the top of the second rotating handle, the top of the fixing plate is rotatably connected with the rotating plate through a rotating shaft, one side of the rotating plate is fixedly connected with one end of the handle, and the clamping block is fixedly connected to one side of the top of the rotating plate.
6. A foundation pit sampling system adaptable to different soil environments as set forth in claim 1, wherein: the surface of screw block inner wall has the threaded rod through thread groove threaded connection, the right-hand member of threaded rod runs through the sampling tube and extends to the inside of sampling tube, the threaded rod is located the inside one end rotation of sampling tube and is connected with the chucking board with slide bar looks adaptation.
7. A foundation pit sampling system adaptable to different soil environments as set forth in claim 6, wherein: the threaded rod is located the left one end fixedly connected with knob of screw thread piece, the surface of knob is provided with anti-skidding recess.
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| CN201811513204.XA CN109490010B (en) | 2018-12-11 | 2018-12-11 | Foundation pit sampling system adaptable to different soil environments |
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| CN201811513204.XA CN109490010B (en) | 2018-12-11 | 2018-12-11 | Foundation pit sampling system adaptable to different soil environments |
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| CN109490010B true CN109490010B (en) | 2021-07-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111707496A (en) * | 2020-08-07 | 2020-09-25 | 吕梁学院 | Detection sampling device for mining |
| CN112268734A (en) * | 2020-10-16 | 2021-01-26 | 湖南筑升信息科技有限公司 | Portable highway engineering soil sampling device |
| CN116643025B (en) * | 2023-05-06 | 2024-04-02 | 中国地质大学（北京） | Detection device for detecting environmental geological soil |
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| CN108254502A (en) * | 2018-01-04 | 2018-07-06 | 周福明 | Gas acid-base value detection device in a kind of air |
| CN207858840U (en) * | 2018-02-22 | 2018-09-14 | 重庆新登奇机电技术有限公司 | A kind of adjustable for height robot servo motors of mounting base |
| CN207976298U (en) * | 2018-03-02 | 2018-10-16 | 大连诚泽检测有限公司 | A kind of novel portable ambient soil sampler |
| CN108871844A (en) * | 2018-05-11 | 2018-11-23 | 金寨益企学农业科技有限公司 | A kind of mechanical agricultural soil acquisition device |
| CN108871853A (en) * | 2018-08-28 | 2018-11-23 | 杜鑫 | A kind of construction deep soil sampler |
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Effective date of registration: 20221201 Address after: 527300 Room 1, Room 501, the fifth floor, No. 35, Fumin Road, Yunfu City, Guangdong Province Patentee after: Guangdong Huadi Engineering Technology Co.,Ltd. Address before: 528000 Foshan Institute of science and technology, Xianxi reservoir West Road, Shishan town, Nanhai District, Foshan City, Guangdong Province Patentee before: FOSHAN University |