CN114275666B - Anti-swing automatic suspension unhooking device for double-beam crane - Google Patents
Anti-swing automatic suspension unhooking device for double-beam crane Download PDFInfo
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- CN114275666B CN114275666B CN202210100488.XA CN202210100488A CN114275666B CN 114275666 B CN114275666 B CN 114275666B CN 202210100488 A CN202210100488 A CN 202210100488A CN 114275666 B CN114275666 B CN 114275666B
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Abstract
The invention relates to an anti-swing automatic suspension unhooking device for a double-beam crane, which comprises a supporting plate, wherein a pulley block is arranged in the center of the upper end surface of the supporting plate, two pairs of anti-swing boxes for installing an anti-swing mechanism are symmetrically arranged around the upper end surface of the supporting plate, two sides of the lower end surface of the supporting plate are fixedly connected with supporting columns, the lower ends of the two supporting columns are respectively provided with a supporting rotating shaft in a penetrating way, the two ends of the supporting rotating shafts are rotatably connected with the lower ends of the supporting columns, a first hook and a second hook are arranged in the middle of the supporting rotating shafts, a second connecting seat is rotatably connected between the upper ends of the two first hooks, the upper ends of the second hooks are rotatably connected with a first connecting seat, the upper ends of the first connecting seat and the upper ends of the second connecting seat are fixedly connected with connecting blocks, and a telescopic cylinder is arranged between the two connecting blocks, so that the movement amplitude of the positioning blocks is consistent with the amplitude of the supporting plates but the directions are opposite, and inertia is counteracted, and the supporting plate and the lifted goods are rapidly stationary.
Description
Technical Field
The invention relates to the technical field of workpiece lifting, in particular to an anti-swing automatic suspension unhooking device for a double-beam crane.
Background
The crane is a multi-action hoisting machine for vertically hoisting and horizontally carrying heavy objects in a certain range, and is also called a crane, a crown block and an aerial crane, and is generally divided into: mobile cranes, tower cranes, and rail-type cranes.
The patent document with publication number CN110921508A discloses an anti-swing automatic suspension unhooking device for a double-beam crane and a method thereof, wherein an anti-swing main arm is used for preventing heavy workpieces from swinging greatly, lifting of the workpieces is realized by pushing of a fixed pulley, one end of the anti-swing main arm is fixedly connected with a W-shaped rigid hook, the W-shaped rigid hook is used for realizing hooking and unhooking of a C-shaped anti-skid seat, an anti-swing auxiliary arm connected with the lower surface of the C-shaped anti-skid seat is used for hanging the workpieces, and the anti-swing main arm, the fixed pulley, the anti-swing auxiliary arm and a main arm platform are respectively connected with a control system for realizing automatic control.
At present, the heavy objects are carried at risk of unhooking, and the heavy objects are dangerous, after carrying is finished, a worker usually manually removes ropes on the heavy objects from a lifting hook, time and labor are wasted, and a mechanism for overcoming inertia and shortening swing time is lacking when the heavy objects are lifted, so that the heavy objects still need to be stationary for a period of time after being lifted to a designated position, the working time is prolonged, and the working efficiency is reduced.
Disclosure of Invention
The invention aims to solve the problems and the defects, and provides an anti-swing automatic suspension unhooking device for a double-beam crane, which improves the overall working efficiency.
The technical problems solved by the invention are as follows:
(1) When the existing equipment carries the heavy objects, the risk of unhooking exists, and after the carrying is finished, a worker usually manually removes the ropes on the heavy objects from the lifting hooks, so that time and labor are wasted;
(2) The existing equipment lacks a mechanism for overcoming inertia and shortening swing time, so that the goods still need to be stationary for a period of time after being lifted to a designated position.
The aim of the invention can be achieved by the following technical scheme: the utility model provides an automatic unhook device that hangs of preventing swaing for double-beam crane, including the backup pad, the assembly pulley is installed at the up end center of backup pad, the up end of backup pad is symmetrical installs two pairs of anti-pendulum box that are used for installing anti-pendulum mechanism all around, the equal fixedly connected with support column in both sides of the lower extreme of backup pad, the lower extreme of two support columns is all run through and is provided with the support pivot, the both ends of support pivot are rotated with the lower extreme of support column and are connected, the mid-mounting of support pivot has first couple and second couple, rotate between the upper end of two first couples and be connected with the second connecting seat, the upper end of second couple is rotated and is connected with first connecting seat, the equal fixedly connected with connecting block in upper end of first connecting seat and second connecting seat, install telescopic cylinder between two connecting blocks.
As a further scheme of the invention, the anti-swing mechanism comprises a positioning block and an electromagnet, the inner side of the anti-swing box is of a hollow structure, the positioning block is arranged in the middle of the inner side of the anti-swing box, and the positioning block is in sliding connection with the anti-swing box.
As a further scheme of the invention, the electromagnet is arranged at two ends of the inner part of the anti-swing box and is symmetrical relative to the positioning block, two ends of the upper surface of the anti-swing box are respectively and fixedly connected with limiting blocks, the middle part of the upper surface of the positioning block is fixedly connected with a connecting column, and the connecting column penetrates through the top of the anti-swing box.
As a further scheme of the invention, the upper surface of the anti-swing box is provided with a sliding groove corresponding to the connecting column in a penetrating way at the position between the two limiting blocks, the connecting column penetrates through the sliding groove and is connected with the sliding groove in a sliding way, and limiting springs are arranged between the two connecting columns and the limiting blocks on the same side.
As a further scheme of the invention, lead blocks are filled in the positioning blocks, the two sides of the positioning blocks, which are close to the electromagnets, are fixedly connected with magnet plates respectively, and a sensor for detecting the swing amplitude and the swing direction is arranged on the supporting plate.
As a further proposal of the invention, the shape of the first hook is consistent with that of the second hook, and the thickness of the first hook is one half of that of the second hook.
As a further scheme of the invention, two sides of the middle part of the second hook are fixedly connected with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged at equal intervals.
As a further scheme of the invention, a clamping plate is fixedly connected to the end face of the lower end of the first hook, and electric push rods are arranged at positions, close to the clamping plate, of two sides of the second hook.
As a further scheme of the invention, when the first hook and the second hook are clamped, the electric push rod is positioned at one side of the clamping plate, and clamping blocks are fixedly connected to the two sides of the second hook at the other side of the clamping plate.
As a further scheme of the invention, the telescopic end of the electric push rod penetrates through the middle part of the clamping plate and one side of the clamping block when the telescopic end extends outwards, and a corresponding clamping groove is formed in the middle part of one side of the clamping block, which is close to the electric push rod.
The invention has the beneficial effects that:
(1) During lifting, the telescopic air cylinder is stretched, so that the first hook and the second hook rotate by taking the supporting rotating shaft as an axis at the same time, the lower ends of the first hook and the second hook move to two sides, the lower ends of the first hook and the second hook are further separated, the lifting rings on the goods are conveniently stretched into between the first hook and the second hook, then the telescopic air cylinder contracts, the lower ends of the first hook and the second hook are close to the middle and pass through the lifting rings, the lifting rings are lifted rapidly and accurately, the goods are lifted to a designated position, after the goods reach the designated position, the unhooking device and the lifted goods are quickly restored to a static state by swinging through the anti-swing mechanism in the anti-swing box, then after the goods are put down, the telescopic air cylinder stretches, the lower ends of the first hook and the lower ends of the second hook are separated, so that the lifting rings on the goods are quickly separated, the time occupied by connection is reduced, the working efficiency is improved, the lower ends of the first hook and the second hook are enabled to be quickly connected with the lower ends of the second hook in a circular arc structure when the inner sides are separated by gravity to two sides, the lower ends of the first hook and the second hook are connected with the second hook in a clamping mode, and the lower ends of the second hook are further connected with the second hook in a clamping mode and the side face to the two sides of the lifting hooks in a clamping mode, and the lifting hooks are further stably connected with the lifting hooks in a clamping mode, and the lifting rod is prevented from being connected with the lifting rod in a clamping mode, and the lifting hook is further in a clamping accident is stably when the lifting hook is connected with the lifting hook and is in a clamping connection mode, and is in a clamping connection with the side connection of the lifting hook and is in a stable side and has a lifting connection;
(2) The swing generated by inertia when the lifted goods are stopped right above the designated position is detected by the sensor, so that the swing amplitude and the swing direction are known, and simultaneously, the swing prevention mechanisms in the four swing prevention boxes on the supporting plate are started, when the supporting plate swings transversely along with the goods, the magnet plates on the two sides of the positioning block are respectively attracted and repelled by the two electromagnets, so that the movement amplitude of the positioning block is consistent with the amplitude of the supporting plate but opposite to the direction, the inertia is counteracted, and the supporting plate and the lifted goods are enabled to be fast stationary.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a side view of the overall structure of the present invention;
FIG. 3 is a schematic view of the internal structure of the anti-swing box according to the present invention;
FIG. 4 is an enlarged schematic view of area A of FIG. 1;
FIG. 5 is a schematic view of the overall structure of the first hook and the second hook;
In the figure: 1. a support plate; 2. pulley block; 3. an anti-swing box; 4. a support column; 5. a first connection base; 6. supporting a rotating shaft; 7. a first hook; 8. a second hook; 9. reinforcing ribs; 10. a second connecting seat; 11. a connecting block; 12. a telescopic cylinder; 13. a positioning block; 14. an electromagnet; 15. a limiting block; 16. a connecting column; 17. a limit spring; 18. a magnet plate; 19. a clamping plate; 20. an electric push rod; 21. a clamping block; 22. a support block; 23. and (5) connecting a plate.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
Please refer to fig. 1-5: the utility model provides an automatic unhook device that hangs of preventing swaying for double-beam crane, including backup pad 1, the up end center of backup pad 1 installs the assembly pulley 2 that is used for being connected with the hawser of electric block, two pairs of anti-pendulum box 3 that are used for installing anti-pendulum mechanism are installed to the up end symmetry all around of backup pad 1, the both sides of the lower extreme of backup pad 1 all are fixedly connected with support column 4, the lower extreme of two support columns 4 all runs through and is provided with support pivot 6, the both ends and the lower extreme of support column 4 of support pivot 6 rotate to be connected, the mid-mounting of support pivot 6 has first couple 7 and second couple 8, first couple 7 is provided with two, two first couple 7 set up in the both sides of second couple 8, and first couple 7 and the side looks butt of second couple 8, install second connecting seat 10 between the upper end of two first couple 7, the upper end and second connecting seat 10 rotate to be connected with first connecting seat 5, the upper end of first connecting seat 5 and second connecting seat 10 all are fixedly connected with 11, install telescopic cylinder connecting block 11 between two tail ends 12 and telescopic connection 11 respectively;
When the electric hoist of the double-beam crane is used, the electric hoist is connected with the pulley block 2 through a hoisting cable, so that the unhooking device is installed on the double-beam crane and matched with the double-beam crane to hoist goods, the telescopic cylinder 12 is stretched, the first hook 7 and the second hook 8 simultaneously rotate by taking the supporting rotating shaft 6 as an axis, so that the lower ends of the first hook 7 and the second hook 8 move to two sides, the lower ends of the first hook 7 and the second hook 8 generate a distance so as to facilitate the hanging ring on the goods to stretch into between the first hook 7 and the second hook 8, the telescopic cylinder 12 is contracted, the lower ends of the first hook 7 and the second hook 8 are close to the middle and penetrate through the hanging ring, so that the hanging ring is quickly and accurately hoisted, the goods are hoisted to a designated position, after reaching the designated position, the unhooking device in the swing box 3 is used for quickly recovering the goods from the swing to a static state, and then the telescopic cylinder 12 is stretched, so that the lower ends of the first hook 7 and the second hook 8 are separated, the work efficiency is reduced, and the work time is shortened.
The anti-swing mechanism comprises a positioning block 13 and an electromagnet 14, the inner side of the anti-swing box 3 is of a hollow structure, the positioning block 13 is arranged in the middle of the inner side of the anti-swing box 3, the positioning block 13 is in sliding connection with the anti-swing box 3, the electromagnet 14 is arranged at two ends of the inner side of the anti-swing box 3 and is symmetrical relative to the positioning block 13, two ends of the upper surface of the anti-swing box 3 are respectively fixedly connected with a limiting block 15, the middle of the upper surface of the positioning block 13 is fixedly connected with a connecting column 16, the connecting column 16 penetrates through the top of the anti-swing box 3, a sliding groove corresponding to the connecting column 16 is formed in the upper surface of the anti-swing box 3 at a position between the two limiting blocks 15, the connecting column 16 penetrates through the sliding groove and is in sliding connection with the sliding groove, limiting springs 17 are respectively arranged between the two connecting columns 16 and the limiting blocks 15 on the same side, two ends of each limiting spring 17 are respectively fixedly connected with the connecting column 16 and the limiting block 15, lead blocks are poured into the inner side of the positioning block 13, two sides of the positioning block 13, which are close to the electromagnet 14, are respectively fixedly connected with a magnet plate 18, and a sensor for detecting swing amplitude and direction is arranged on the supporting plate 1;
When the swing-preventing device is used, the sensor detects swing generated by inertia when the lifted goods stop right above a designated position, so that the swing amplitude and the swing direction are known, and simultaneously, the swing-preventing mechanisms in the four swing-preventing boxes 3 on the supporting plate 1 are started, when the supporting plate 1 swings transversely along with the goods, the two electromagnets 14 attract and repel the magnet plates 18 on the two sides of the positioning block 13 respectively, so that the movement amplitude of the positioning block 13 is consistent with the amplitude of the supporting plate 1 but opposite to the direction, the inertia is counteracted, and the supporting plate 1 and the lifted goods are enabled to be quickly stationary.
The shape of the first hook 7 is consistent with that of the second hook 8, the thickness of the first hook 7 is one half of that of the second hook 8, the two first hooks 7 are fixedly connected together through a fan-shaped connecting plate 23, the thickness of the connecting plate 23 is consistent with that of the second hook 8, a plurality of reinforcing ribs 9 are fixedly connected to two sides of the middle of the second hook 8, the plurality of reinforcing ribs 9 are arranged at equal intervals, when in use, the two first hooks 7 and the second hook 8 rotate by taking the supporting rotating shaft 6 as an axle center, the second hook 8 is arranged between the two first hooks 7, the lower ends of the second hooks 8 and the lower ends of the first hooks 7 are overlapped when in lifting, so that lifting rings on cargoes move to the lowest point of the inner ring lower side of the first hooks 7 under the action of gravity, and the lower ends of the second hooks 8 are in a circular arc-shaped structure through the first hooks 7 and the lower ends of the second hooks 8, the inner sides of the lower ends of the first hooks 7 and the lower ends of the second hooks 8 are in contact with the side faces of lifting rings when the bearing gravity is separated from two sides, and therefore stability and clamping of the lifting rings are ensured, and accidents caused in lifting and unhooking are prevented.
The clamping plate 19 is fixedly connected to the end face of the lower end of the first hook 7, the electric push rods 20 are arranged at positions, close to the clamping plate 19, of the two sides of the second hook 8, when the first hook 7 and the second hook 8 are clamped, the electric push rods 20 are positioned on one side of the clamping plate 19, clamping blocks 21 are fixedly connected to the other sides, which are positioned on the two sides of the second hook 8, of the clamping plate 19, supporting blocks 22 are fixedly connected to the two sides, far from one end of the clamping blocks 21, of the electric push rods 20, the supporting blocks 22 are fixedly connected with the second hook 8, the telescopic ends of the electric push rods 20 penetrate through the middle part of the clamping plate 19 and one side, close to the clamping blocks 21, of the middle part of one side, close to the electric push rods 20, of the clamping blocks 21 are provided with corresponding clamping grooves;
When the first hook 7 and the second hook 8 are combined together under the action of the telescopic cylinder 12, the clamping plate 19 moves between the clamping block 21 and the electric push rod 20, then the electric push rod 20 stretches and passes through the clamping plate 19, and then the electric push rod is in butt joint with the clamping groove of the clamping block 21, so that the first hook 7 and the second hook 8 are further prevented from being suddenly separated to cause unhooking accidents during lifting.
When the telescopic air cylinder 12 is used, the first hook 7 and the second hook 8 rotate by taking the supporting rotating shaft 6 as an axis, so that the lower ends of the first hook 7 and the second hook 8 move to two sides, the lower ends of the first hook 7 and the second hook 8 generate a distance to facilitate the hanging ring on goods to extend between the first hook 7 and the second hook 8, then the telescopic air cylinder 12 is contracted, the lower ends of the first hook 7 and the second hook 8 are close to the middle and pass through the hanging ring, when the first hook 7 and the second hook 8 are combined together under the action of the telescopic air cylinder 12, the clamping plate 19 moves between the clamping block 21 and the electric push rod 20, then the electric push rod 20 extends and passes through the clamping plate 19, then the electric push rod is in butt joint with the clamping groove of the clamping block 21, so that the hanging ring is quickly and accurately lifted, after the goods reach the specified position, the anti-swing mechanism in the anti-swing box 3 enables the unhooking device to be quickly swung into a static state together with the goods, and then the goods are separated from the lower end of the first hook 8 after the telescopic air cylinder 12 is quickly lifted, and the goods are separated from the lower end of the telescopic air cylinder 8;
The swing generated by inertia when the lifted goods stop right above the designated position is detected by the sensor, so that the swing amplitude and the swing direction are known, and simultaneously, the swing prevention mechanisms in the four swing prevention boxes 3 on the supporting plate 1 are started, and when the supporting plate 1 swings along with the goods in the transverse direction, the two electromagnets 14 attract and repel the magnet plates 18 on the two sides of the positioning block 13 respectively, so that the movement amplitude of the positioning block 13 is consistent with the amplitude of the supporting plate 1 but opposite in direction, and the inertia is counteracted.
The present invention is not limited in any way by the above-described preferred embodiments, but is not limited to the above-described preferred embodiments, and any person skilled in the art will appreciate that the present invention can be embodied in the form of a program for carrying out the method of the present invention, while the above disclosure is directed to equivalent embodiments capable of being modified or altered in some ways, it is apparent that any modifications, equivalent variations and alterations made to the above embodiments according to the technical principles of the present invention fall within the scope of the present invention.
Claims (3)
1. The utility model provides an anti-swing automatic suspension unhooking device for double-beam crane, its characterized in that includes backup pad (1), assembly pulley (2) are installed at the up end center of backup pad (1), two pairs of anti-swing box (3) that are used for installing anti-swing mechanism are installed to up end symmetry all around of backup pad (1), the both sides of the lower terminal surface of backup pad (1) are all fixedly connected with support column (4), two the lower extreme of support column (4) is all run through and are provided with support pivot (6), the both ends of support pivot (6) are connected with the lower extreme rotation of support column (4), the mid-mounting of support pivot (6) has first couple (7) and second couple (8), two rotation is connected with second connecting seat (10) between the upper end of first couple (7), the upper end rotation of second couple (8) is connected with first connecting seat (5), the upper end of first connecting seat (5) and second connecting seat (10) are all fixedly connected with connecting block (11), install telescopic cylinder (12) between two connecting seat (11).
The anti-swing mechanism comprises a positioning block (13) and an electromagnet (14), the inner side of the anti-swing box (3) is of a hollow structure, the positioning block (13) is arranged in the middle of the inner side of the anti-swing box (3), and the positioning block (13) is in sliding connection with the anti-swing box (3);
The electromagnet (14) is arranged at two ends of the inside of the anti-swing box (3) and is symmetrical relative to the positioning block (13), two ends of the upper surface of the anti-swing box (3) are respectively fixedly connected with limiting blocks (15), a connecting column (16) is fixedly connected with the middle part of the upper surface of the positioning block (13), the connecting column (16) penetrates through the top of the anti-swing box (3), a sliding groove corresponding to the connecting column (16) is formed in the upper surface of the anti-swing box (3) in a penetrating manner at the position between the two limiting blocks (15), the connecting column (16) penetrates through the sliding groove and is in sliding connection with the sliding groove, and limiting springs (17) are arranged between the two connecting columns (16) and the limiting blocks (15) on the same side;
Lead blocks are filled in the positioning blocks (13), magnet plates (18) are fixedly connected to two sides, close to the electromagnets (14), of the positioning blocks (13), and sensors for detecting swing amplitude and direction are mounted on the supporting plates (1);
a clamping plate (19) is fixedly connected to the end face of the lower end of the first hook (7), and electric push rods (20) are arranged at positions, close to the clamping plate (19), of two sides of the second hook (8);
When the first hook (7) and the second hook (8) are clamped, the electric push rod (20) is positioned at one side of the clamping plate (19), and clamping blocks (21) are fixedly connected to the two sides of the second hook (8) positioned at the other side of the clamping plate (19);
The telescopic end of the electric push rod (20) penetrates through the middle part of the clamping plate (19) and one side of the clamping block (21) when stretching outwards, and a corresponding clamping groove is formed in the middle part of one side of the clamping block (21) close to the electric push rod (20).
2. The anti-swing automatic suspension unhooking device for the double-beam crane according to claim 1, wherein the shape of the first hook (7) is consistent with that of the second hook (8), and the thickness of the first hook (7) is one half of that of the second hook (8).
3. The anti-swing automatic suspension unhooking device for the double-beam crane according to claim 1, wherein a plurality of reinforcing ribs (9) are fixedly connected to two sides of the middle of the second hook (8), and the plurality of reinforcing ribs (9) are arranged at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210100488.XA CN114275666B (en) | 2022-01-27 | 2022-01-27 | Anti-swing automatic suspension unhooking device for double-beam crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210100488.XA CN114275666B (en) | 2022-01-27 | 2022-01-27 | Anti-swing automatic suspension unhooking device for double-beam crane |
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| CN114275666A CN114275666A (en) | 2022-04-05 |
| CN114275666B true CN114275666B (en) | 2024-09-27 |
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| CN202210100488.XA Active CN114275666B (en) | 2022-01-27 | 2022-01-27 | Anti-swing automatic suspension unhooking device for double-beam crane |
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| CN104401332A (en) * | 2014-11-26 | 2015-03-11 | 龙岩学院 | Monkey vehicle swinging proof device and method thereof |
| CN204737597U (en) * | 2015-06-23 | 2015-11-04 | 河南华北起重吊钩有限公司 | Shutting lifting hook |
| CN107697800A (en) * | 2017-10-31 | 2018-02-16 | 国网河南省电力公司检修公司 | A kind of autospasy hook block hook |
| CN215160452U (en) * | 2021-04-16 | 2021-12-14 | 山东岳峰起重机械有限公司 | An anti-sway lifting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167207A (en) * | 1993-12-13 | 1995-07-04 | Mitsubishi Heavy Ind Ltd | Swing prevention device |
| CN2804043Y (en) * | 2005-03-29 | 2006-08-09 | 大连华锐股份有限公司 | Electromagnetic hanging beam crane |
| JP2010235225A (en) * | 2009-03-30 | 2010-10-21 | Tadano Ltd | Crane operating device and crane |
| CN212101718U (en) * | 2020-04-29 | 2020-12-08 | 中鹏联合重工集团有限公司 | Lifting anti-swing control system for crane installation |
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2022
- 2022-01-27 CN CN202210100488.XA patent/CN114275666B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401332A (en) * | 2014-11-26 | 2015-03-11 | 龙岩学院 | Monkey vehicle swinging proof device and method thereof |
| CN204737597U (en) * | 2015-06-23 | 2015-11-04 | 河南华北起重吊钩有限公司 | Shutting lifting hook |
| CN107697800A (en) * | 2017-10-31 | 2018-02-16 | 国网河南省电力公司检修公司 | A kind of autospasy hook block hook |
| CN215160452U (en) * | 2021-04-16 | 2021-12-14 | 山东岳峰起重机械有限公司 | An anti-sway lifting machine |
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Address after: 231600 intersection of Liaoyuan road and Daihe Road, Feidong Economic Development Zone, Hefei City, Anhui Province Applicant after: Anhui Jangho Intelligent Equipment Group Co.,Ltd. Address before: 230000 intersection of Liaoyuan road and Daihe Road, Feidong Economic Development Zone, Hefei City, Anhui Province Applicant before: Anhui Chunhua Intelligent Technology Co.,Ltd. |
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