CN214622411U - Intelligent bending, shrinking and expanding detector - Google Patents
Intelligent bending, shrinking and expanding detector Download PDFInfo
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- CN214622411U CN214622411U CN202120538085.4U CN202120538085U CN214622411U CN 214622411 U CN214622411 U CN 214622411U CN 202120538085 U CN202120538085 U CN 202120538085U CN 214622411 U CN214622411 U CN 214622411U
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Abstract
An intelligent bending, shrinking and expanding detector relates to the field of cement mortar shrinking and expanding detection, and solves the problems of complex measurement, complex calculation process, complex structure and low measurement precision of the existing mortar shrinking and expanding detector. The utility model discloses an intelligent bending, shrinking and expanding detector, which comprises an upper computer; a support platform; the displacement sensor assembly is fixed on the linear displacement platform, and the linear displacement platform and the displacement sensor assembly are both connected with an upper computer; the micrometer fixing seat is arranged at the right end of the supporting platform; the micrometer is arranged on the micrometer fixing seat and is connected with the upper computer; a U-shaped channel fixed on the support platform; the first fixing component and the second fixing component are movably mounted at two ends of the U-shaped channel respectively. The utility model discloses an intelligent crooked, shrink, inflation detector has advantages such as simple structure, measurement convenience, calculation are simple and convenient, measurement accuracy height.
Description
Technical Field
The utility model relates to a cement mortar shrinkage expansion detects technical field, concretely relates to intelligent crooked, shrink, inflation detector.
Background
The cement mortar is prepared by mixing and stirring cement, fine aggregate and water or cement, fine aggregate, lime and water according to a certain proportion according to requirements. In order to facilitate construction, cement mortar is generally prepared on site in the construction process of constructional engineering. Finished mortar, for example, mortar with strength of M5, M7.5, M10, is mostly used as cement mortar used in the construction of structures.
After the cement mortar stops curing, the cement mortar placed in unsaturated air undergoes irreversible shrinkage due to the loss of water absorbed by internal capillary pores and gel pores, which is called dry shrinkage deformation, and is called dry shrinkage for short. The drying shrinkage distortion of cement mortar is one of the important causes of cracking. The main reasons influencing the drying shrinkage deformation of cement mortar are as follows: the influence of water consumption, the cement mortar shows micro-expansion deformation in water and shows contraction deformation in air forever; the larger the water-cement ratio, the larger the shrinkage; large bleeding amount, high surface water content and large early surface shrinkage. The cement affects the shrinkage, and the higher the cement activity is, the finer the particles are, the larger the specific surface area is, and the larger the shrinkage is. Aggregate and other factors influence the shrinkage, so that the shrinkage of the sandstone aggregate is greatly increased; the larger the mud content in the coarse and fine aggregate is, the larger the shrinkage is; the smaller the aggregate grain size is, the higher the sand rate is, and the larger the shrinkage is; the larger the reinforcement ratio, the smaller the shrinkage. Environmental and maintenance influences, the larger the environmental humidity is, the smaller the shrinkage is; the more drying shrinkage is larger; the longer the early curing time, the smaller the shrinkage; the curing is not noticed in the early stage, and the shrinkage is increased; the higher the ambient and concrete temperatures, the greater the shrinkage.
At present, a mortar shrinkage and expansion instrument is generally adopted for shrinkage and expansion of cement mortar. When the existing mortar shrinkage dilatometer is used for detection, a plurality of values need to be measured, the measuring process is complicated, the calculating process is complex, in addition, the structure is complicated, cement mortar does not have a fixing device in the measuring process, displacement can occur, and the measuring precision is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the measurement that current mortar shrink dilatometer exists is loaded down with trivial details, the computational process is complicated, the structure is complicated, measurement accuracy is low, the utility model provides an intelligent crooked, shrink, inflation detector.
The utility model discloses a solve the technical scheme that technical problem adopted as follows:
the utility model discloses an intelligent bending, shrinking and expanding detector, which comprises an upper computer;
a support platform;
the displacement sensor assembly is fixed on the linear displacement platform, and the linear displacement platform and the displacement sensor assembly are both connected with an upper computer;
the micrometer fixing seat is arranged at the right end of the supporting platform;
the micrometer is arranged on the micrometer fixing seat and is connected with the upper computer;
a U-shaped channel fixed on the support platform;
the first fixing component and the second fixing component are movably mounted at two ends of the U-shaped channel respectively.
Further, the support platform comprises: the support plate, the two side support plates and the two upper support plates; the support flat plate and the two upper support flat plates are rectangular, the structural sizes of the two side support flat plates are the same, the two side support flat plates are respectively fixed on two sides of the support flat plate, and the two side support flat plates are both arranged vertically to the support flat plates; two ends of the side supporting flat plate are arranged into inclined planes; two go up the dull and stereotyped and two side support flat board one-to-one links to each other respectively to two go up the dull and stereotyped inboard setting of support.
Further, the U-shaped channel includes: the bottom supporting plate, the two side supporting plates and the two upper fixing flat plates; the bottom supporting plate, the two side supporting plates and the two upper fixing flat plates are all rectangular, the structural sizes of the two side supporting plates are the same, the two side supporting plates are respectively fixed on two sides of the bottom supporting plate, and the two side supporting plates are both arranged perpendicular to the supporting flat plates; the two upper fixing flat plates are the same in structural size, are respectively connected with the two side supporting plates in a one-to-one correspondence manner, and are arranged outwards; the two upper fixing flat plates are respectively connected with the two upper supporting flat plates in a one-to-one correspondence mode, and the bottom supporting plate is arranged on the supporting flat plates.
Further, the first fixing component and the second fixing component are the same in structural size.
Further, the first fixing assembly includes: the first fixing seat and the first V-shaped fixing piece are fixed on the first fixing seat; the second fixing assembly includes: the second fixing seat and a second V-shaped fixing piece fixed on the second fixing seat; the first V-shaped fixing piece and the second V-shaped fixing piece are arranged in a central symmetry mode, and the first fixing seat and the second fixing seat can slide in the U-shaped channel.
Further, the displacement sensing assembly includes: the locking screw, the displacement sensor and the displacement sensor fixing seat are arranged on the base; the upper end of the displacement sensor fixing seat is provided with a locking screw mounting hole and a locking groove; a displacement sensor mounting hole is formed in the middle of the displacement sensor fixing seat; the displacement sensor penetrates through the displacement sensor mounting hole, the locking screw is screwed into the locking screw mounting hole, and the displacement sensor is locked at a measuring position; a measuring head of the displacement sensor props against the back surface of the first fixed seat; and the displacement sensor is connected with the upper computer.
Furthermore, a transverse micrometer measuring end jack is arranged at the upper end of the micrometer fixing seat, and a vertical adjusting nut mounting hole is arranged at the upper end of the micrometer measuring end jack; the measuring end of the micrometer passes through the jack of the measuring end of the micrometer, the adjusting nut is screwed into the adjusting nut mounting hole to fix the measuring end of the micrometer, and the measuring head of the micrometer abuts against the back face of the second fixing seat.
Furthermore, the device also comprises four leveling feet arranged on the bottom surface of the supporting platform and a level ruler placed on the supporting platform.
Further, the device also comprises a bushing arranged in the U-shaped channel.
Further, still including setting up temperature sensor and the humidity transducer on the supporting platform outer wall, temperature sensor, humidity transducer all link to each other with the host computer.
The utility model has the advantages that:
the utility model discloses in, adopt micrometer and displacement sensor simultaneous measurement to test the length variation value at material both ends to calculate the natural drying shrinkage value of test material fast, compare with prior art, have the advantage of simplifying the computational process, calculating portably.
The utility model discloses in, adopt the U-shaped passageway as the carrier of splendid attire test material, set up the fixed subassembly of first fixed subassembly and second respectively at U-shaped passageway both ends simultaneously, during the V-arrangement stationary blade in the fixed subassembly can insert the test material to the realization is to the spacing fixed action of test material. In addition, the first fixing component and the second fixing component can slide in the U-shaped channel, and can move together with the test material in the contraction process of the test material, so that the measurement result is not influenced.
The utility model discloses in, can adjust whole detector to horizontality through adjustment leveling lower margin and level bar.
The utility model discloses in, through linear displacement platform can accurate control displacement sensor's displacement, realize the purpose of accurate measurement length variation.
The utility model discloses a micrometer and displacement sensor measure the length variation of test material, have the advantage that measurement accuracy is high.
The utility model discloses an intelligent crooked, shrink, inflation detector has advantages such as simple structure, measurement convenience, calculation are simple and convenient, measurement accuracy height.
Drawings
Fig. 1 is a schematic view of the three-dimensional structure of the intelligent bending, shrinking and expanding detector of the present invention.
Fig. 2 is a front view of the intelligent bending, shrinking and expanding detector of the present invention.
Fig. 3 is a rear view of the intelligent bending, shrinking and expanding detector of the present invention.
Fig. 4 is a top view of the intelligent bending, shrinking and expanding detector of the present invention.
Fig. 5 is a bottom view of the intelligent bending, shrinking and expanding detector of the present invention.
Fig. 6 is a left side view of the intelligent bending, shrinking and expanding detector of the present invention.
Fig. 7 is a right side view of the intelligent bending, shrinking and expanding detector of the present invention.
FIG. 8 is a schematic view of the positional relationship between the U-shaped channel and the support platform.
Fig. 9 is a schematic structural view of the support platform.
Fig. 10 is a schematic structural view of a U-shaped channel.
Fig. 11 is a schematic structural diagram of the linear displacement platform.
Fig. 12 is a schematic structural view of the first fixing assembly.
Fig. 13 is a schematic perspective view of the micrometer holder.
Fig. 14 is a front structural schematic view of the micrometer fixing seat.
Fig. 15 is a schematic structural view of the adjusting nut.
In the figure, 1, a linear displacement platform, 2, a displacement sensing assembly, 3, a first fixing seat, 4, a first V-shaped fixing sheet, 5, a U-shaped channel, 6, a supporting platform, 7, a second V-shaped fixing sheet, 8, a second fixing seat, 9, a micrometer fixing seat, 10, a micrometer, 11, an adjusting nut, 12, a leveling foot margin, 13 and a level ruler.
Detailed Description
As shown in fig. 1 to fig. 15, the utility model discloses an intelligent bending, shrinking and expanding detector mainly includes: the device comprises a linear displacement platform 1, a displacement sensing assembly 2, a first fixing assembly, a U-shaped channel 5, a supporting platform 6, a second fixing assembly, a micrometer fixing seat 9, a micrometer 10, an adjusting nut 11, a leveling foot margin 12 and a level ruler 13.
As shown in fig. 9, the supporting platform 6 is made of stainless steel, and may be integrally machined. The support platform 6 mainly comprises: a support plate 601, two lateral support plates 602, two upper support plates 603. The support flat plate 601 and the two upper support flat plates 603 are rectangular, the structural sizes of the two side support flat plates 602 are the same, the two side support flat plates 602 are respectively fixed on two sides of the support flat plate 601, and the two side support flat plates 602 are both perpendicular to the support flat plate 601. Wherein, both ends of the lateral support plate 602 are set to be inclined planes. The two upper support plates 603 are connected to the two side support plates 602 in a one-to-one correspondence, respectively, and the two upper support plates 603 are disposed inward.
As shown in fig. 3, four leveling feet 12 are provided, and the four leveling feet 12 are all installed on the bottom surface of the supporting platform 6 and used for adjusting the detector to a horizontal state.
As shown in fig. 10, the U-shaped channel 5 is integrally made of a stainless steel profile, and can be integrally machined and formed by a machine. The U-shaped channel 5 mainly comprises: a bottom support plate 501, two side support plates 502, two upper fixing plates 503. Wherein, bottom sprag board 501, two collateral branch fag boards 502, two go up the equal rectangle of fixed flat board 503, two collateral branch fag boards 502's structural dimension is the same, and two collateral branch fag boards 502 are fixed respectively in bottom sprag board 501 both sides to two collateral branch fag boards 502 all set up with the dull and stereotyped 601 perpendicular of support. The two upper fixing flat plates 503 have the same structural size, the two upper fixing flat plates 503 are respectively connected with the two side support plates 502 in a one-to-one correspondence manner, and the two upper fixing flat plates 503 are arranged towards the outside.
As shown in fig. 8, the U-shaped channel 5 is fixed in the support platform 6 by screws, specifically: the two upper fixing plates 503 are connected to the two upper supporting plates 603 one by one, and the bottom supporting plate 501 is disposed on the supporting plates 601. Wherein the U-shaped channel 5 is used to contain the test material.
As shown in fig. 1 and 2, the linear displacement platform 1 and the displacement sensing assembly 2 are both mounted at the left end of the support platform 6. Micrometer fixing base 9, micrometer 10 all install at supporting platform 6 right-hand member.
As shown in fig. 6, the linear displacement platform 1 is fixed at the left end of the support platform 6. The displacement sensing assembly 2 is fixed on the linear displacement platform 1. The linear moving distance of the displacement sensing assembly 2 is accurately controlled through the linear displacement platform 1. The displacement sensing assembly 2 mainly includes: locking screw 201, displacement sensor 202 and displacement sensor holder 203. The upper end of the displacement sensor fixing seat 203 is provided with a locking screw mounting hole, and the upper end of the displacement sensor fixing seat is also provided with a locking groove. A displacement sensor mounting hole is formed in the middle of the displacement sensor fixing seat 203. The displacement sensor 202 passes through the displacement sensor mounting hole, and the locking screw 201 is screwed into the locking screw mounting hole to lock the displacement sensor 202 at the measuring position.
The micrometer fixing seat 9 is fixed at the right end of the supporting platform 6. As shown in fig. 13 to 15, a lateral micrometer measuring end insertion hole is formed in the upper side of the micrometer fixing seat 9, and a vertical adjusting nut mounting hole 902 is formed in the upper end of the micrometer measuring end insertion hole. The measuring end of the micrometer 10 penetrates through the jack of the measuring end of the micrometer, and the adjusting nut 11 is screwed into the adjusting nut mounting hole 902 to fix the measuring end of the micrometer 10.
As shown in fig. 2, the first fixing member and the second fixing member have the same structural size. The first fixing component mainly comprises: first fixing base 3, first V-arrangement stationary blade 4 one side is fixed on first fixing base 3. The second fixed subassembly mainly includes: second V-arrangement stationary blade 7, second fixing base 8, second V-arrangement stationary blade 7 one side is fixed on second fixing base 8. The first fixing component is movably arranged at the left end of the U-shaped channel 5. The second fixed component is movably arranged at the right end of the U-shaped channel 5. And, first V-arrangement stationary blade 4 becomes central symmetry setting with second V-arrangement stationary blade 7, and first fixing base 3 and second fixing base 8 all can slide in U-shaped passageway 5.
As shown in fig. 2, after the displacement sensing assembly 2 is mounted, the measuring head of the displacement sensor 202 abuts against the back surface of the first fixing seat 3, and after the micrometer 10 is mounted, the measuring head of the micrometer 10 abuts against the back surface of the second fixing seat 8.
As shown in fig. 2, level 13 is placed on support platform 6. In this embodiment, a level 13 is placed at the right end of the support platform 6. Level 13 is used to see if the meter is level.
The utility model discloses still including setting up the bush (not drawn in the picture) in U-shaped passageway 5, this bush can adopt chloroprene rubber foam fine hair or polyethylene film to make to reduce the friction of test material and U-shaped passageway 5 wall.
The utility model discloses still include temperature sensor and humidity transducer, temperature sensor sets up on 6 outer walls of supporting platform, and humidity transducer sets up on 6 outer walls of supporting platform. The temperature of the environment around the detector is measured by a temperature sensor, and the humidity of the environment around the detector is measured by a humidity sensor.
The utility model discloses in, U-shaped passageway 5's length can be 250mm, 500mm and 1000mm etc. can select the U-shaped passageway 5 of different length as required to measure.
The utility model discloses still include the host computer, wherein, displacement sensor 202, micrometer 10, temperature sensor, humidity transducer in linear displacement platform 1, the displacement sensing subassembly 2 all link to each other with the host computer. Through the work of host computer control linear displacement platform 1, gather displacement sensor 202's measured value and gather micrometer 10's measured value through the host computer, gather temperature sensor and humidity transducer's measured value through the host computer, install measurement software (adopt prior art can) in the host computer, each measured value of gathering is recorded through this measurement software, and can directly calculate the coefficient of contraction and expansion of test material, can directly show the measurement curve through this measurement software, also can print or export the measuring result through the host computer.
In this embodiment, the linear displacement platform 1, the displacement sensor 202, the micrometer 10, the level meter 13, the temperature sensor, and the humidity sensor may be implemented by using the prior art.
The utility model discloses an intelligent crooked, shrink, inflation detector goes on according to following step during the measurement:
1. and pouring the stirred mortar into the U-shaped channel 5, vibrating to compact the mortar, inserting the first V-shaped fixing piece 4 and the second V-shaped fixing piece 7 into the cement mortar, and measuring the length of the cement mortar (before hardening) at the moment to be L (unit mm).
2. The whole detector is placed in an environment of (20 +/-5) DEG C, the surface of the cement mortar is smoothed after 4 hours, the cement mortar is placed in an environment of (20 +/-2) DEG C and the relative humidity of more than 90 percent, and after 7 days, the cement mortar is hardened and is taken as an initial state of measurement, namely the measurement values of the displacement sensor 202 and the micrometer 10 are 0 at the moment.
3. After the cement mortar is hardened, the whole detector is placed in an environment with the temperature of (20 +/-2) DEG C and the relative humidity of (60 +/-5%), the length change of two ends of the solid cement mortar is transmitted to the displacement sensor 202 and the micrometer 10, and the length change value L of the cement mortar is measured on the t days (7 days, 14 days, 21 days, 28 days, 56 days and 90 days) respectivelyt(unit mm) is the length after natural drying, i.e. the length variation value L of cement mortartIn mm is equal to the measured value L of the displacement sensor 202Bit(in mm) from the measured value L of the micrometer 10Thousand of(in mm) of the total. The length change values of the two ends of the cement mortar are measured simultaneously by the displacement sensor 202 and the micrometer 10 and are transmitted to an upper computer, and the natural drying shrinkage value epsilon of the cement mortar is calculated by measuring software in the upper computerat。
The calculation formula is as follows:
Lt＝Lbit+LThousand of。
4. The utility model discloses when measuring, natural drying shrinkage value epsilonatThe arithmetic mean of the three measurements was taken as the final result.
The utility model discloses an intelligent crooked, shrink, inflation detector measurement accuracy and repeatability increase along with 5 length and dimension's of U-shaped passageway increase. The utility model discloses an intelligent crooked, shrink, inflation detector's measurement accuracy is superior to 2 microns.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. Intelligent crooked, shrink, inflation detector, including the host computer, its characterized in that still includes:
a support platform (6);
the displacement sensor comprises a linear displacement platform (1) and a displacement sensing assembly (2), wherein the linear displacement platform (1) and the displacement sensing assembly (2) are installed at the left end of a supporting platform (6), the displacement sensing assembly (2) is fixed on the linear displacement platform (1), and the linear displacement platform (1) and the displacement sensing assembly (2) are connected with an upper computer;
a micrometer fixing seat (9) arranged at the right end of the supporting platform (6);
a micrometer (10) which is arranged on the micrometer fixing seat (9) and is connected with the upper computer;
a U-shaped channel (5) fixed on the support platform (6);
the first fixing component and the second fixing component are respectively and movably arranged at two ends of the U-shaped channel (5).
2. The intelligent bend, contract and expand detector according to claim 1, wherein the support platform (6) comprises: a support plate (601), two side support plates (602), two upper support plates (603); the support flat plate (601) and the two upper support flat plates (603) are rectangular, the structural sizes of the two side support flat plates (602) are the same, the two side support flat plates (602) are respectively fixed on two sides of the support flat plate (601), and the two side support flat plates (602) are both arranged vertically to the support flat plate (601); two ends of the side supporting flat plate (602) are arranged into inclined planes; the two upper supporting flat plates (603) are respectively connected with the two side supporting flat plates (602) in a one-to-one correspondence manner, and the two upper supporting flat plates (603) are arranged inwards.
3. The intelligent bend, contract and expand detector according to claim 2, wherein the U-shaped channel (5) comprises: a bottom support plate (501), two side support plates (502), two upper fixing flat plates (503); the bottom supporting plate (501), the two side supporting plates (502) and the two upper fixing plates (503) are rectangular, the structural sizes of the two side supporting plates (502) are the same, the two side supporting plates (502) are respectively fixed on two sides of the bottom supporting plate (501), and the two side supporting plates (502) are both perpendicular to the supporting plates (601); the two upper fixing flat plates (503) have the same structural size, the two upper fixing flat plates (503) are respectively connected with the two side supporting plates (502) in a one-to-one correspondence manner, and the two upper fixing flat plates (503) are arranged outwards; the two upper fixing flat plates (503) are respectively connected with the two upper supporting flat plates (603) in a one-to-one correspondence mode, and the bottom supporting plate (501) is arranged on the supporting flat plates (601).
4. The intelligent bend, contract, and expand test instrument of claim 1, wherein the first mounting assembly is the same size as the second mounting assembly.
5. The intelligent bend, contract, and expand detector of claim 1 or 4, wherein the first securing assembly comprises: the first fixing seat (3) and a first V-shaped fixing piece (4) fixed on the first fixing seat (3); the second fixing assembly includes: a second fixed seat (8) and a second V-shaped fixed plate (7) fixed on the second fixed seat (8); first V-arrangement stationary blade (4) become central symmetry setting with second V-arrangement stationary blade (7), first fixing base (3) and second fixing base (8) homoenergetic slide in U-shaped passageway (5).
6. The intelligent bend, contract and expand detector according to claim 5, wherein the displacement sensing assembly (2) comprises: the device comprises a locking screw (201), a displacement sensor (202) and a displacement sensor fixing seat (203); the upper end of the displacement sensor fixing seat (203) is provided with a locking screw mounting hole and a locking groove; a displacement sensor mounting hole is formed in the middle of the displacement sensor fixing seat (203); the displacement sensor (202) penetrates through the displacement sensor mounting hole, and a locking screw (201) is screwed into the locking screw mounting hole to lock the displacement sensor (202) at a measuring position; the measuring head of the displacement sensor (202) props against the back surface of the first fixed seat (3); the displacement sensor (202) is connected with the upper computer.
7. The intelligent bending, shrinking and expanding detector according to claim 5, wherein a transverse micrometer measuring end jack is arranged at the upper end of the micrometer fixing seat (9), and a vertical adjusting nut mounting hole 902 is arranged at the upper end of the micrometer measuring end jack; the measuring end of micrometer (10) passes micrometer measuring end jack, realizes fixing of micrometer (10) measuring end in adjusting nut (11) screw in adjusting nut mounting hole 902, and the measuring head of micrometer (10) supports second fixing base (8) the back.
8. The intelligent bend, shrink, and expansion tester as recited in claim 1, further comprising four leveling feet (12) disposed on the bottom surface of the support platform (6) and a leveling rod (13) placed on the support platform (6).
9. The intelligent bend, contract, and expand test machine of claim 1, further comprising a bushing disposed in the U-shaped channel (5).
10. The intelligent bending, shrinking and expanding detector according to claim 1, further comprising a temperature sensor and a humidity sensor arranged on the outer wall of the supporting platform (6), wherein the temperature sensor and the humidity sensor are both connected with an upper computer.
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| CN112798642A (en) * | 2021-03-16 | 2021-05-14 | 吉林艾格瑞科技有限公司 | Intelligent bending, shrinking and expanding detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112798642A (en) * | 2021-03-16 | 2021-05-14 | 吉林艾格瑞科技有限公司 | Intelligent bending, shrinking and expanding detector |
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Address after: 130000 room 1401, 14th floor, Zhongguancun innovation center, high tech Zone, Changchun City, Jilin Province Patentee after: Jilin aigrui Technology Co.,Ltd. Address before: Room 501, unit 1, floor 5, building 4, south of Jinhu Road, east of Chaofan street, high tech Industrial Development Zone, Changchun City, Jilin Province, 130000 Patentee before: Jilin aigrui Technology Co.,Ltd. |