CN110500370B - Electromagnetic ventilation drum brake - Google Patents
Electromagnetic ventilation drum brake Download PDFInfo
- Publication number
- CN110500370B CN110500370B CN201910662050.9A CN201910662050A CN110500370B CN 110500370 B CN110500370 B CN 110500370B CN 201910662050 A CN201910662050 A CN 201910662050A CN 110500370 B CN110500370 B CN 110500370B
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- drum
- drum brake
- hole
- electromagnetic
- fixedly installed
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- 238000009423 ventilation Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 19
- 238000005192 partition Methods 0.000 claims abstract description 15
- 230000006978 adaptation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000004907 flux Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 12
- 239000012535 impurity Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000000284 extract Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D65/82—Features relating to cooling for internally-engaging brakes
- F16D65/827—Features relating to cooling for internally-engaging brakes with open cooling system, e.g. cooled by air
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to the technical field of electromagnetic flux wind drum brakes, and discloses an electromagnetic ventilation drum brake, which comprises a drum brake shell, wherein a drum cavity is formed in the drum brake shell, an installation pipe is fixedly installed in the drum brake shell, an installation hole is formed in the installation pipe, a partition disc positioned in the drum cavity is fixedly installed on the outer side of the installation pipe, a limiting ring is fixedly installed on the right side of the partition disc, a fixing rod positioned in the limiting ring and provided with one end extending to the right side of the drum brake shell is fixedly installed on the right side of the partition disc, a through hole is formed in the right side wall of the drum brake shell, and a friction ring positioned in the through hole is fixedly installed on the outer side of the fixing rod. This electromagnetism ventilation drum is stopped, possesses advantages such as radiating effect is good, has solved this kind of electromagnetism drum and has stopped when in-service use at present, and the totally closed problem that leads to the produced heat of brake back braking piece and friction disc to be difficult to the dissipation of shell that the drum was stopped.
Description
Technical Field
The invention relates to the technical field of electromagnetic flux wind drum brakes, in particular to an electromagnetic ventilation drum brake.
Background
Drum brake has been used in automobiles for a century, but because of its reliability and strong braking force, drum brake is still installed on many types of automobiles (mostly used on rear wheels) and fixed with tires and rotating at the same speed, when braking, oil pressure is used to push brake shoes to contact the inner edge of a brake drum, and the rotation of the tires is suppressed by the friction force generated by the contact, so as to achieve the purpose of braking, drum brake is composed of a brake base plate, a brake sub-pump, a brake shoe and other related connecting rods, springs, pin nails, and a brake drum, and is generally installed on the rear wheel at present, the cost of drum brake is lower, the absolute braking force is higher, the inner surface of the brake drum of drum brake is the position of the brake device generating braking torque, and under the condition of obtaining the same braking torque, the diameter of the brake drum of drum brake device can be much smaller than that of the brake disc brake, therefore, large vehicles for heavy loads can only be equipped with drum brakes in a limited space of the rim in order to obtain a strong braking force.
Chinese patent CN201611032657.1 proposes an electrified double T electromagnet drum brake, which has the advantages of simple structure, easy control, sensitive braking, fast response, power saving and labor saving, etc. when the present electromagnet drum brake is in actual use, the totally closed shell of the drum brake causes the heat generated by the brake back brake disc and the friction disc to be difficult to dissipate, so an electromagnetic ventilation drum brake is proposed to solve the above-mentioned problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the electromagnetic ventilation drum brake which has the advantages of good heat dissipation effect and the like, and solves the problem that the heat generated by a brake pad and a friction plate after braking is difficult to dissipate due to the totally closed shell of the drum brake when the conventional electromagnetic drum brake is in actual use.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an electromagnetic ventilation drum brake comprises a drum brake shell, wherein a drum cavity is formed in the drum brake shell, an installation pipe is fixedly installed in the drum brake shell, an installation hole is formed in the installation pipe, a separation disc located in the drum cavity is fixedly installed on the outer side of the installation pipe, a limiting ring is fixedly installed on the right side of the separation disc, a fixing rod located in the limiting ring and provided with one end extending to the right side of the drum brake shell is fixedly installed on the right side of the separation disc, a through hole is formed in the right side wall of the drum brake shell, a friction ring located in the through hole is fixedly installed on the outer side of the fixing rod, a threaded rod is fixedly installed on the right side of the fixing rod, a nut is connected with the outer side of the threaded rod in a threaded mode, a fan cover located on one side, opposite to the installation pipe, of the nut is fixedly installed on the right side of the drum brake shell, an air, the air inlet hole has been seted up to the right side wall of casing of stopping by the drum, the curved hole has been seted up to the inside of straining the stopper, the inside fixed mounting in air inlet hole has the filtration hair.
Preferably, a ventilation cavity is formed between the drum brake shell and the partition disc, and the distance between the partition disc and the drum brake shell is not less than one centimeter.
Preferably, the left side of the mounting tube extends to the inside of the drum cavity, and the right side of the mounting tube extends to the outside of the drum brake housing.
Preferably, the limiting rings are distributed in an equidistant annular mode, and the diameter of each limiting ring is larger than that of each through hole.
Preferably, the number of the fixing rods and the number of the through holes are the same as the number of the limiting rings, and the diameter of the threaded rod is the same as that of the fixing rods.
Preferably, the outer side of the threaded rod is provided with threads, and the threads are matched with the screw cap.
Preferably, the diameter of the screw cap is larger than that of the through hole, and the screw cap is designed in a regular hexagon shape.
Preferably, the number of the wind shields is four, the four wind shields are distributed in an annular shape at equal intervals, and one side of each wind shield, which is close to the installation pipe, is in an opening shape.
Preferably, one side of the fan housing, which is close to the mounting pipe, is inclined, and the air inlet hole is designed in an inclined manner.
(III) advantageous effects
Compared with the prior art, the invention provides an electromagnetic ventilation drum brake, which has the following beneficial effects:
1. this electromagnetism ventilation drum is stopped, it is normally installed with equipment to stop the casing through the drum, equipment drives the drum at the rotation in-process and stops the casing and rotate, the drum is stopped the casing and is divided into positive and negative direction with the rotation, when equipment forward rotation, the drum is stopped the casing and is followed equipment synchronous revolution, the income wind gap of fan housing is pulled wind, wind gets into curved hole and income wind hole through the filter plug, the inside wind of income wind hole flows to the inside in drum chamber through the ventilation chamber, dispel the heat to the drum intracavity, the heat of the intracavity portion is inhaled to the air current, discharge from the left side of drum casing of stopping, thereby make the inside circulation of casing of drum stopping, the purpose has been reached.
2. This electromagnetic ventilation drum stops, for preventing dust or impurity entering drum intracavity portion, gas will lead to filtering stopper and curved hole, the great impurity of volume can be blockked by straining the stopper, the dust is when reacing the inside in inlet hole in the gas, strain the hair and can filter the dust, make impurity and dust that get into in the inside gas of drum intracavity portion reduce in a large number, do not influence the normal work that the drum stopped, strain the stopper and extract and wash or replace, strain the inside that can stretch into the inlet hole with abluent brush after the stopper extracts and clear up straining the hair, and is convenient and fast, and convenient to use.
Drawings
FIG. 1 is a schematic view of an electromagnetic ventilation drum brake structure provided by the present invention;
FIG. 2 is a left side view of an electromagnetic ventilation drum brake structure according to the present invention;
FIG. 3 is a right side view of an electromagnetic ventilation drum brake structure according to the present invention;
fig. 4 is a schematic structural view of a brake air inlet hole of an electromagnetic ventilation drum provided by the invention.
In the figure: 1 drum shell of stopping, 2 ventilation chamber, 3 drum chamber, 4 partition plates, 5 installation pipes, 6 mounting holes, 7 spacing rings, 8 dead levers, 9 perforation, 10 friction ring, 11 nut, 12 threaded rod, 13 screw thread, 14 fan housing, 15 air inlet, 16 filter plug, 17 air inlet, 18 filter hair, 19 curved holes.
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 the following technical solutions: an electromagnetic ventilation drum brake comprises a drum brake shell 1, a drum cavity 3 is arranged in the drum brake shell 1, a mounting pipe 5 is fixedly arranged in the drum brake shell 1, the left side of the mounting pipe 5 extends into the drum cavity 3, the right side of the mounting pipe 5 extends to the outer side of the drum brake shell 1, a mounting hole 6 is arranged in the mounting pipe 5, a partition plate 4 positioned in the drum cavity 3 is fixedly arranged on the outer side of the mounting pipe 5, a ventilation cavity 2 is formed between the drum brake shell 1 and the partition plate 4, the distance between the partition plate 4 and the drum brake shell 1 is not less than one centimeter, a limiting ring 7 is fixedly arranged on the right side of the partition plate 4, a fixing rod 8 positioned in the limiting ring 7 and provided with one end extending to the right side of the drum brake shell 1 is fixedly arranged on the right side wall of the drum brake shell 1, perforations 9 are arranged on the right side wall of the drum brake shell 1 at equal intervals, the limiting ring 7 is distributed in an annular shape, and the diameter of, the friction ring 10 positioned in the through hole 9 is fixedly installed on the outer side of the fixed rod 8, the threaded rod 12 is fixedly installed on the right side of the fixed rod 8, the number of the fixed rods 8 and the number of the through holes 9 are the same as those of the limiting rings 7, the diameter of the threaded rod 12 is the same as that of the fixed rod 8, the threaded nut 11 is connected with the threaded rod 12 through threads, the diameter of the threaded nut 11 is larger than that of the through hole 9, the threaded nut 11 is designed in a regular hexagonal shape, threads 13 are arranged on the outer side of the threaded rod 12, the threads 13 are matched with the threaded nut 11, the fan housings 14 positioned on the opposite sides of the threaded nut 11 and the mounting pipe 5 are fixedly installed on the right side of the drum brake shell 1, the number of the fan housings 14 is four, the four fan housings 14 are distributed in an equidistant annular shape, one side of each fan housing 14 close to the mounting pipe, an air inlet hole 17 is formed in the right side wall of the drum brake shell 1, one side, close to the mounting pipe 5, of the fan cover 14 is in an inclined plane shape, the air inlet hole 17 is in an inclined design, a bent hole 19 is formed in the filter plug 16, filter bristles 18 are fixedly mounted in the air inlet hole 17, the drum brake shell 1 and the equipment are normally mounted through the drum brake shell 1, the equipment drives the drum brake shell 1 to rotate in the rotating process, the drum brake shell 1 and the rotation are divided into positive and negative directions, when the equipment rotates in the positive direction, the drum brake shell 1 rotates synchronously along with the equipment, an air inlet 15 of the fan cover 14 receives air, the air enters the bent hole 19 and the air inlet hole 17 through the filter plug 16, the air in the air inlet hole 17 flows into the drum cavity 3 through the cavity 2 to dissipate heat in the drum cavity 3, the air flow absorbs the heat in the drum cavity 3 and is discharged from the left side of the drum brake shell 1, so that the air in the drum brake shell 1 circulates, and the purpose, for preventing that dust or impurity from getting into the drum chamber 3 inside, gaseous will lead to and filter stopper 16 and curved hole 19, the great impurity of volume can be blockked by filter stopper 16, the dust is when arriving the inside of inlet air hole 17 in the gas, it can filter the dust to strain hair 18, impurity and dust in the gas that make to get into drum chamber 3 inside reduce in a large number, do not influence the normal work that the drum stopped, filter stopper 16 extracts and washs or replaces, can stretch into the inside of inlet air hole 17 with the abluent brush after filter stopper 16 extracts and clear up filter hair 18, convenient and fast, convenient to use, regarding the air-out of air current, the second drum casing 1 of stopping is installed on the left side of drum casing 1, the structure that two drum casings 1 of stopping installed is the same, and drum casing 1 fan housing 14 opening opposite direction, two drum casing 1's of stopping income wind gap 15 are according to two alternations of the positive and negative rotation directions of drum stopping.
In summary, the electromagnetic ventilation drum brake is normally installed with equipment through the drum brake shell 1, the equipment drives the drum brake shell 1 to rotate in the rotation process, the drum brake shell 1 and the rotation are divided into positive and negative directions, when the equipment rotates in the positive direction, the drum brake shell 1 rotates synchronously along with the equipment, the air inlet 15 of the air cover 14 collects air, the air enters the bent hole 19 and the air inlet hole 17 through the filter plug 16, the air in the air inlet hole 17 flows to the inside of the drum cavity 3 through the ventilation cavity 2 to dissipate heat in the drum cavity 3, the air flow absorbs the heat in the drum cavity 3 and is discharged from the left side of the drum brake shell 1, so that the air in the drum brake shell 1 circulates to achieve the purpose, in order to prevent dust or impurities from entering the drum cavity 3, the air flows through the filter plug 16 and the bent hole 19, the impurities with larger volume can be blocked by the filter plug 16, and when the dust in the air reaches the inside of the air inlet hole 17, strain hair 18 can filter the dust, make impurity and dust in getting into 3 inside gases in drum chamber reduce in a large number, do not influence the normal work that the drum was stopped, strain stopper 16 and extract and wash or replace, strain the inside that 16 extracts the back can stretch into wind hole 17 with abluent brush and clear up straining hair 18, high convenience and fast, and convenient to use, when having solved this kind of present electromagnet drum and having stopped at in-service use, the totally closed problem that leads to brake back braking piece and the produced heat of friction disc to be difficult to dispel of the shell of drum stopping.
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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an electromagnetism ventilation drum is stopped, includes that drum stops casing (1), its characterized in that: the drum brake comprises a drum brake shell (1), a drum cavity (3) is formed in the drum brake shell (1), an installation pipe (5) is fixedly installed in the drum brake shell (1), an installation hole (6) is formed in the installation pipe (5), a partition plate (4) located in the drum cavity (3) is fixedly installed on the outer side of the installation pipe (5), a limiting ring (7) is fixedly installed on the right side of the partition plate (4), a fixing rod (8) located in the limiting ring (7) and extending to the right side of the drum brake shell (1) at one end is fixedly installed on the right side of the partition plate (4), a through hole (9) is formed in the right side wall of the drum brake shell (1), a friction ring (10) located in the through hole (9) is fixedly installed on the outer side of the fixing rod (8), a threaded rod (12) is fixedly installed on the right side of the fixing rod (8), and a nut (11) is in, the right side fixed mounting that the drum stopped casing (1) has fan housing (14) that is located nut (11) and installation pipe (5) one side relatively, income wind gap (15) have been seted up to the inside of fan housing (14), the inside movable mounting that goes into wind gap (15) has filter plug (16), air inlet hole (17) have been seted up to the right side wall that the drum stopped casing (1), curved hole (19) have been seted up to the inside of filter plug (16), the inside fixed mounting that goes into air hole (17) has strain hair (18).
2. The electromagnetic ventilating drum brake as claimed in claim 1, wherein: a ventilation cavity (2) is formed between the drum brake shell (1) and the partition disc (4), and the distance between the partition disc (4) and the drum brake shell (1) is not less than one centimeter.
3. The electromagnetic ventilating drum brake as claimed in claim 1, wherein: the left side of installation pipe (5) extends to the inside of drum chamber (3), and the right side of installation pipe (5) extends to the outside of drum casing (1) of stopping.
4. The electromagnetic ventilating drum brake as claimed in claim 1, wherein: the limiting rings (7) are distributed in an equidistant annular mode, and the diameter of each limiting ring (7) is larger than that of each through hole (9).
5. The electromagnetic ventilation drum brake of claim 4, wherein: the number of the fixing rods (8) and the number of the through holes (9) are the same as the number of the limiting rings (7), and the diameter of the threaded rod (12) is the same as that of the fixing rods (8).
6. The electromagnetic ventilating drum brake as claimed in claim 1, wherein: the outside of threaded rod (12) is equipped with screw thread (13), and screw thread (13) and nut (11) looks adaptation.
7. The electromagnetic ventilating drum brake as claimed in claim 1, wherein: the diameter of the screw cap (11) is larger than that of the through hole (9), and the screw cap (11) is designed in a regular hexagonal shape.
8. The electromagnetic ventilating drum brake as claimed in claim 1, wherein: the number of the wind shields (14) is four, the four wind shields (14) are distributed in an annular shape at equal intervals, and one side of each wind shield (14) close to the installation pipe (5) is in an opening shape.
9. The electromagnetic ventilating drum brake as claimed in claim 1, wherein: one side of the fan cover (14) close to the mounting pipe (5) is in an inclined plane shape, and the air inlet hole (17) is in an inclined design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662050.9A CN110500370B (en) | 2019-07-22 | 2019-07-22 | Electromagnetic ventilation drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662050.9A CN110500370B (en) | 2019-07-22 | 2019-07-22 | Electromagnetic ventilation drum brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110500370A CN110500370A (en) | 2019-11-26 |
| CN110500370B true CN110500370B (en) | 2020-11-27 |
Family
ID=68586656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910662050.9A Active CN110500370B (en) | 2019-07-22 | 2019-07-22 | Electromagnetic ventilation drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110500370B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713444A (en) * | 2009-10-14 | 2010-05-26 | 杨东洲 | Automobile brake drum with latticed stiffeners |
| CN101782121A (en) * | 2010-02-10 | 2010-07-21 | 于宥源 | On-line detection forced air-cooled brake drum |
| CN202251571U (en) * | 2011-08-08 | 2012-05-30 | 上海百顺交通器材有限公司 | Multifunctional brake disc of electric vehicle |
| CN203756807U (en) * | 2013-12-31 | 2014-08-06 | 江苏南铸科技股份有限公司 | Automobile brake drum |
| CN107642569A (en) * | 2017-11-08 | 2018-01-30 | 十堰市宏昌达工贸股份有限公司 | A kind of semitrailer brake drum |
| CN109372915A (en) * | 2018-12-30 | 2019-02-22 | 河北百龙汽车配件制造有限公司 | A kind of brake drum with heat sinking function |
| CN109458411A (en) * | 2018-12-30 | 2019-03-12 | 河北百龙汽车配件制造有限公司 | Automobile brake drum with grid reinforcing rib |
| CN109611473A (en) * | 2018-12-30 | 2019-04-12 | 河北百龙汽车配件制造有限公司 | A kind of spiral heat dissipation brake drum |
-
2019
- 2019-07-22 CN CN201910662050.9A patent/CN110500370B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713444A (en) * | 2009-10-14 | 2010-05-26 | 杨东洲 | Automobile brake drum with latticed stiffeners |
| CN101782121A (en) * | 2010-02-10 | 2010-07-21 | 于宥源 | On-line detection forced air-cooled brake drum |
| CN202251571U (en) * | 2011-08-08 | 2012-05-30 | 上海百顺交通器材有限公司 | Multifunctional brake disc of electric vehicle |
| CN203756807U (en) * | 2013-12-31 | 2014-08-06 | 江苏南铸科技股份有限公司 | Automobile brake drum |
| CN107642569A (en) * | 2017-11-08 | 2018-01-30 | 十堰市宏昌达工贸股份有限公司 | A kind of semitrailer brake drum |
| CN109372915A (en) * | 2018-12-30 | 2019-02-22 | 河北百龙汽车配件制造有限公司 | A kind of brake drum with heat sinking function |
| CN109458411A (en) * | 2018-12-30 | 2019-03-12 | 河北百龙汽车配件制造有限公司 | Automobile brake drum with grid reinforcing rib |
| CN109611473A (en) * | 2018-12-30 | 2019-04-12 | 河北百龙汽车配件制造有限公司 | A kind of spiral heat dissipation brake drum |
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| Publication number | Publication date |
|---|---|
| CN110500370A (en) | 2019-11-26 |
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Effective date of registration: 20221221 Address after: 225600 Gaoyou science and technology entrepreneurship center, Dongtinghu Road, Gaoyou Economic Development Zone, Yangzhou City, Jiangsu Province Patentee after: YANGZHOU HAIDI OPTOELECTRONIC TECHNOLOGY CO.,LTD. Address before: Room 211, 2nd floor, scientific research building, Dongtinghu Road, Gaoyou Economic Development Zone, Yangzhou City, Jiangsu Province 225600 Patentee before: YANGZHOU HANXUN TECHNOLOGY CO.,LTD. |
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