CN114354181B - Face gear meshing coloring detection method - Google Patents
Face gear meshing coloring detection method Download PDFInfo
- Publication number
- CN114354181B CN114354181B CN202210013627.5A CN202210013627A CN114354181B CN 114354181 B CN114354181 B CN 114354181B CN 202210013627 A CN202210013627 A CN 202210013627A CN 114354181 B CN114354181 B CN 114354181B
- Authority
- CN
- China
- Prior art keywords
- face gear
- gauge
- detected
- meshing
- coloring agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The application discloses a face gear meshing coloring detection method, which relates to the technical field of face gear detection and comprises the following steps: cleaning the gauge master gauge and the face gear to be detected; dyeing the gauge, and smearing a dyeing agent on the inner wall of a gauge meshing groove; the method comprises the steps of (1) uniformly coloring agent, randomly meshing a gauge master gauge and a to-be-detected face gear, enabling the coloring agent on the inner wall of a gauge master gauge meshing groove to contact the to-be-detected face gear, and rubbing the coloring agent on the to-be-detected face gear; cleaning the face gear to be detected; repeating the steps S3.1 and S3.2 for n times, wherein n is more than or equal to 1; rubbing operation, namely, re-engaging the gauge master gauge and the face gear to be detected; and (3) observing operation, namely detaching the face gear to be detected from the gauge master gauge, and observing the coloring agent under the rubbing on the face gear to be detected. The application has the effect of reducing the occurrence of the situation that the vibration effect on two sides is different and is difficult to reflect the true contact state.
Description
Technical Field
The application relates to the technical field of face gear detection, in particular to a face gear meshing coloring detection method.
Background
The face gear is a gear with special structure, and its contact teeth are circumferentially distributed on the face. Since the contact teeth are subjected to a large load, they must be strong enough, contact area strong enough, and support sufficient. Therefore, in order to ensure the quality of the face gear, the contact condition of the face gear must be detected to reflect the actual contact state of the gear, so as to judge whether the face gear affects the normal operation of the mechanical component.
In the related art, referring to fig. 1, for detecting the contact condition of the face gear 1, ink is generally applied to the inside of the engagement groove 21 of the gauge master gauge 2, and the gauge master gauge 2 is engaged with the face gear 1 to be detected, that is, the teeth 11 of the face gear 1 to be detected are embedded into the engagement groove 21 of the gauge master gauge 2, so that the ink on the inner wall of the engagement groove 21 of the gauge master gauge 2 is rubbed on the teeth 11 of the face gear 1 to be detected. Then, unloading the face gear 1 to be detected, wherein the contact part of the face gear 1 to be detected and the inner wall of the meshing groove 21 of the gauge master gauge 2 is subjected to rubbing with printing ink, so that the contact condition of the face gear to be detected after meshing with other parts in actual use is obtained.
Aiming at the related technology, the inventor believes that the prior art detection method is difficult to ensure the uniformity of the thickness of the printing ink on the side wall of the engagement groove of the gauge, so that the contact surface of the gauge and the face gear to be detected is inaccurate, and the detection precision is low.
Disclosure of Invention
In order to improve the condition that the detection accuracy is low due to uneven thickness of ink on a detection master gauge in the related art, the application provides a face gear meshing coloring detection method.
The application provides a face gear meshing coloring detection method, which adopts the following technical scheme:
a face gear meshing coloring detection method comprises the following steps:
s1, cleaning a gauge master gauge and a face gear to be detected;
s2, dyeing the gauge, and smearing a dyeing agent on the inner wall of the gauge master gauge meshing groove;
s3, uniformly coloring agent, wherein the coloring agent is a dye,
s3.1, randomly engaging a gauge master gauge and a to-be-detected face gear, enabling a coloring agent on the inner wall of a gauge master gauge engaging groove to contact the to-be-detected face gear, and rubbing the coloring agent on the to-be-detected face gear;
s3.2, cleaning the face gear to be detected, and removing the coloring agent on the end teeth of the face gear (1) to be detected;
s3.3, repeating the steps S3.1 and S3.2 for n times, wherein n is more than or equal to 1;
s4, rubbing operation, namely, re-engaging the gauge master gauge and the face gear to be detected, wherein the coloring agent on the inner wall of the gauge master gauge engaging groove contacts the face gear to be detected and rubs the part of the tooth of the face gear to be detected, which contacts the inner wall of the gauge master gauge engaging groove;
s5, observing operation, namely detaching the face gear to be detected from the gauge master gauge, and observing the coloring agent under the rubbing on the face gear to be detected.
By adopting the technical scheme, in practical experiments, the to-be-detected face gear is repeatedly adopted to randomly engage with the gauge master, and the coloring agent on the inner wall of the gauge master engagement groove is subjected to rubbing, so that the coloring agent on the inner wall of the gauge master engagement groove is gradually thinned and tends to be uniform; and finally, meshing the gauge master gauge with the face gear to be detected, and observing the coloring agent which is finally rubbed on the face gear to be detected. In this way, the accuracy of detecting the face gear to be detected is improved.
The face gear to be detected is produced according to the design of the face gear, and qualified face gears are produced, so that all teeth of the face gear to be detected tend to be in good contact, or the fact that qualified teeth on the face gear to be detected are far larger than unqualified teeth is interpreted. Therefore, the female gauge of the gauge and the face gear to be detected are meshed for a plurality of times, and the effect of uniformly coloring agent on the female gauge of the gauge can be achieved.
Preferably, in S2, firstly dipping the coloring agent by adopting a large hairbrush and roughly brushing the inner wall of the gauge meshing groove, wherein the width of the large hairbrush is not less than 3cm; and then dipping the colorant by adopting a small brush to finish brushing the inner wall of the gauge meshing groove, wherein the width of the small brush is not more than 2cm.
By adopting the technical scheme, the inner wall of the gauge female gauge meshing groove is painted by adopting the large hairbrush, so that the efficiency is high; and then the inner wall of the gauge meshing groove is painted by adopting a small brush so as to ensure the uniformity of the painting thickness of the coloring agent on the inner wall of the gauge meshing groove.
Preferably, in S2, spraying is carried out by adopting a filling coloring agent, and the distance between the filling bottle and the gauge master gauge is 45-55 cm.
By adopting the technical scheme, when the filling coloring agent is adopted for spraying, the distance of 45-55cm can ensure that the sprayed coloring agent is scattered uniformly, and the occurrence of the condition of concentrated and uneven spraying is reduced.
Preferably, in S2, the thickness of the coloring agent smeared on the inner wall of the gauge master engagement groove is controlled to be 2-4 micrometers.
Through adopting above-mentioned technical scheme, when examining the thinner time of the dyestuff on the female rule of utensil, the dyestuff is less, when examining the female rule meshing groove inner wall of utensil and waiting to detect the face gear contact, wait to detect and be difficult to the comparatively obvious dyestuff of adhesion on the face gear, influence observation and judgement. When the coloring agent on the inner wall of the gauge meshing groove is thicker, the partial parts of the inner wall of the gauge meshing groove and the face gear to be detected are not contacted, but the gap is smaller, and part of the coloring agent contacts the face gear to be detected and is stained on the face gear to be detected, so that false contact is formed. The dye with the thickness of 2-4 microns is coated on the gauge master, so that normal detection can be ensured, and meanwhile, the condition that the dye is too thick and false contact is generated can be reduced.
Preferably, in S5, when observing the face gear to be detected, the indoor illumination needs to be between 450lx and 500lx.
By adopting the technical scheme, the sufficient brightness in the observation environment is ensured, the observation is convenient, and misjudgment is reduced.
Preferably, in S5, sampling and observation are performed, the coloring agent of the gear tooth of the end face to be detected is rubbed down by using an adhesive tape, and then the adhesive tape is attached to white paper for further observation.
By adopting the technical scheme, when the observation environment is darker, staff adopts the adhesive tape to rub the coloring agent on the gear teeth of the end face to be detected onto white paper, and the coloring agent is relatively more vivid and is easier to observe. Meanwhile, the detection image can be reserved in the mode, and the follow-up data can be conveniently fetched and checked.
Preferably, in S3.2, the face gear to be detected is cleaned with a brush using a washing gasoline or alcohol as a washing solution.
By adopting the technical scheme, the face gear to be detected is cleaned by adopting the washing gasoline or alcohol, so that the cleanliness of the face gear to be detected is improved, and the condition that the step of uniformly dyeing is influenced by the left-over dyeing agent is reduced.
Preferably, in S3.3, steps S3.1 and S3.2 are repeated 2 times.
By adopting the technical scheme, the development and printing of the coloring agent are repeated twice, the coloring agent on the inner wall of the master gauge meshing groove of the gauge is thinned and uniformly detected, and the detection precision and the detection efficiency are guaranteed.
Preferably, in S4, after the gauge master gauge is meshed with the face gear to be detected, the face gear to be detected is pressed against one side, and then the opposite pressing side is knocked; then, the knocked side is pressed against, and then the side opposite to the knocked side is knocked with the same force as the first knocking.
By adopting the technical scheme, the face gear to be detected is knocked, the vibration mode is simulated, and the actual contact area of the face gear to be detected under the condition of vibration is acquired; meanwhile, one side of the face gear to be detected, which is away from the knocking side, is propped against to prevent the face gear to be detected from moving, and the accuracy of the face gear to be detected in detection is ensured.
Preferably, in S4, the knocking force of the face gear to be detected is between 40 and 60N.
By adopting the technical scheme, the face gear to be detected is knocked by adopting the force between 40N and 60N, vibration in the use of an actual gear can be provided, the vibration mode of the gear to be detected, which is close to actual operation, can be acquired, and the occurrence of the condition that the face gear to be detected is knocked and moved can be reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
the coloring agent on the inner wall of the gauge master engaging groove is thinned through the rubbing of the face gear to be detected, so that the accuracy of detecting the face gear to be detected is improved;
the face gear to be detected is quickly brushed by the large brush, so that the coloring agent brushing efficiency is improved, and the small Mao Shuatu brush is adopted uniformly, so that the uniformity of the coloring agent brushing thickness on the tooth surface is ensured.
Drawings
FIG. 1 is an exploded view of a face gear and gauge master;
fig. 2 is a schematic diagram mainly showing the master gauge structure of the gauge.
Reference numerals: 1. face gears; 11. teeth; 2. checking tool master gauge; 21. engagement grooves.
Detailed Description
The embodiment of the application discloses a face gear meshing coloring detection method.
Examples:
referring to fig. 1 and 2, the face gear meshing coloring detection method includes the steps of:
s1, cleaning the gauge master gauge 2 and the face gear 1 to be detected, wherein washing gasoline or alcohol can be adopted, and a brush is adopted for repeated brushing.
S2, dyeing the gauge, and smearing a dyeing agent on the inner wall of the meshing groove 21 of the gauge master gauge 2.
In this embodiment, the coloring agent is grinding oil. In the smearing operation, the involution grinding oil is diluted firstly, and the dilution work is strictly carried out according to the specification of the brand of the involution grinding oil; then, dipping the coloring agent by adopting a large brush and brushing the inner wall of the meshing groove 21 of the gauge female gauge 2, wherein the width of the large brush is not less than 3cm; and then, dipping the colorant into the small hairbrush to brush the inner wall of the meshing groove 21 of the gauge 2, wherein the width of the small hairbrush is not more than 2cm, and the running-in oil on the inner wall of the meshing groove 21 of the gauge 2 is ensured to be uniform and thin and uniform. Preferably, the thickness of the coloring agent smeared on the inner wall of the engagement groove 21 of the gauge master gauge 2 is controlled to be between 2 and 4 micrometers.
In other embodiments, the filling dye can be used for spraying, the distance between the filling bottle and the gauge master gauge 2 is 45-55cm, preferably 50cm, and the spraying is uniform, full, sagging prevention and consistent thickness are ensured.
S3, uniformly dyeing the dye.
S3.1, engaging the gauge master gauge 2 and the face gear 1 to be detected, enabling the coloring agent on the inner wall of the groove 21 of the gauge master gauge 2 to contact the face gear 1 to be detected, and rubbing the coloring agent on the face gear 1 to be detected.
S3.2, cleaning the face gear 1 to be detected by using washing gasoline or alcohol as a washing solution and adopting a brush, and removing the coloring agent on the end teeth of the face gear 1 to be detected, so that the condition that the left coloring agent affects the whole step of uniform coloring agent is reduced.
S3.3, repeating the steps S3.1 and S3.2 n times, wherein n is more than or equal to 1. In this embodiment, n is 2. Thereby thinning the coloring agent on the inner wall of the engagement groove 21 of the gauge master gauge 2 and tending to be uniform.
The n-time engagement of the female gauge 2 of the engagement gauge and the face gear 1 to be detected does not follow the corresponding relationship between the teeth 11 of the face gear 1 to be detected and the engagement grooves 21 of the female gauge 2 of the engagement gauge when the n-1 engagement is performed, i.e. the embedding of the teeth 11 of the face gear 1 to be detected and the engagement grooves 21 of the female gauge 2 of the engagement gauge in the n-time engagement operation is random.
S4, rubbing operation.
S4.1, the gauge master gauge 2 and the face gear 1 to be detected are meshed again.
It should be noted that the meshing operation of the gauge master gauge 2 and the face gear 1 to be detected at this time does not follow the correspondence relationship between the teeth 11 of the face gear 1 to be detected and the meshing grooves 21 of the gauge master gauge 2 at the time of meshing in step S3, i.e., the meshing at this time is random.
The master gauge 2 and the face gear 1 to be detected are randomly meshed to perform uniform coloring agent and rubbing operation, so that the randomness of detection is achieved, and the interchangeability of the face gear 1 in actual use is guaranteed.
S4.2, pressing one side of the gauge master gauge 2 by hand, and knocking one side opposite to the pressing side; then, the knocked side is pressed by hand, and then the side opposite to the knocked side is knocked with the same force as the first knocking. Moreover, the knocking force is required to be 40-60N, and the consistency of the multi-knocking force is ensured as much as possible.
In this embodiment, the gauge master gauge 2 is knocked by using a rubber hammer, and the lifting height of the rubber hammer relative to the gauge master gauge 2 is 15-20cm, preferably 18cm.
In other embodiments, the gauge master gauge 2 is tapped with a copper bar, which is raised between 5-9cm, preferably 7cm, with respect to the gauge master gauge 2.
So that the coloring agent on the inner wall of the meshing groove 21 of the gauge master gauge 2 fully contacts the face gear 1 to be detected, and rubs on the part of the teeth 11 of the face gear 1 to be detected, which contacts the inner wall of the meshing groove 21 of the gauge master gauge 2.
S5, observing operation, namely disconnecting the face gear 1 to be detected from the gauge master gauge 2, and manually observing. Requiring the detection personnel to have no achromatopsia and color weakness and to be trained in a professional way. Meanwhile, the indoor illumination needs to be between 450lx and 500lx, preferably 500lx.
When the indoor illumination intensity is insufficient, sampling and observing are carried out, the coloring agent of the tooth 11 of the face gear 1 to be detected is rubbed by using the adhesive tape, then the adhesive tape is attached to white paper, and then the observation is carried out.
The actual rubbing area analysis is based on the principle that corners are not contacted, edges are not contacted, contact is hollow, contact is uneven and the like, so that whether the face gear 1 to be detected is qualified or not is judged.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (9)
1. A face gear meshing coloring detection method is characterized in that: the method comprises the following steps:
s1, cleaning a gauge master gauge (2) and a face gear (1) to be detected;
s2, dyeing the gauge, and smearing a dyeing agent on the inner wall of a meshing groove (21) of a gauge master gauge (2);
s3, uniformly coloring agent, wherein the coloring agent is a dye,
s3.1, randomly engaging a gauge master (2) and a face gear (1) to be detected, wherein a coloring agent on the inner wall of a gauge master (2) engaging groove (21) contacts the face gear (1) to be detected and rubs on the face gear (1) to be detected;
s3.2, cleaning the face gear (1) to be detected, and removing the coloring agent on the end teeth of the face gear (1) to be detected;
s3.3, repeating the steps S3.1 and S3.2 for n times, wherein n is more than or equal to 1;
s4, rubbing operation, namely, re-engaging the gauge master gauge (2) and the face gear (1) to be detected, wherein the coloring agent on the inner wall of the meshing groove (21) of the gauge master gauge (2) contacts the face gear (1) to be detected, and rubbing the part of the tooth teeth (11) of the face gear (1) to be detected, which contacts the inner wall of the meshing groove (21) of the gauge master gauge (2);
s5, observing operation, namely disconnecting the face gear (1) to be detected from the gauge master gauge (2) and observing the coloring agent under the rubbing on the face gear (1) to be detected;
in S4, after the gauge master gauge (2) is meshed with the face gear (1) to be detected, pressing one side of the face gear (1) to be detected, and knocking one side opposite to the pressing side; then, the knocked side is pressed against, and then the side opposite to the knocked side is knocked with the same force as the first knocking.
2. The face gear meshing coloring detection method according to claim 1, characterized by comprising the steps of: in S2, dipping a large hairbrush into a coloring agent and roughly brushing the inner wall of a meshing groove (21) of a gauge master gauge (2), wherein the width of the large hairbrush is not less than 3cm; and then dipping the colorant by adopting a small brush, and finely brushing the inner wall of the meshing groove (21) of the gauge master gauge (2), wherein the width of the small brush is not more than 2cm.
3. The face gear meshing coloring detection method according to claim 1, characterized by comprising the steps of: in S2, spraying is carried out by adopting a filling coloring agent, and the distance between the filling bottle and the gauge master gauge (2) is 45-55 cm.
4. The face gear meshing coloring detection method according to claim 1, characterized by comprising the steps of: in S2, the thickness of the coloring agent smeared on the inner wall of the meshing groove (21) of the gauge master gauge (2) is controlled between 2 and 4 micrometers.
5. The face gear meshing coloring detection method according to claim 1, characterized in that in S5, when the face gear (1) to be detected is observed, indoor illumination is required to be between 450lx and 500lx.
6. The face gear meshing coloring detection method according to claim 1, characterized by comprising the steps of: in S5, sampling and observing, rubbing the coloring agent of the tooth (11) of the face gear (1) to be detected by using an adhesive tape, attaching the adhesive tape to white paper, and then observing.
7. The face gear meshing coloring detection method according to claim 1, characterized by comprising the steps of: in S3.2, washing gasoline or alcohol is used as a washing solution, and a brush is adopted to clean the gear (1) to be detected.
8. The face gear meshing coloring detection method according to claim 1, characterized by comprising the steps of: in S3.3, steps S3.1 and S3.2 are repeated 2 times.
9. The face gear meshing coloring detection method according to claim 1, characterized by comprising the steps of: in S4, the knocking force of the face gear (1) to be detected is between 40 and 60N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210013627.5A CN114354181B (en) | 2022-01-06 | 2022-01-06 | Face gear meshing coloring detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210013627.5A CN114354181B (en) | 2022-01-06 | 2022-01-06 | Face gear meshing coloring detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114354181A CN114354181A (en) | 2022-04-15 |
| CN114354181B true CN114354181B (en) | 2023-09-15 |
Family
ID=81106825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210013627.5A Active CN114354181B (en) | 2022-01-06 | 2022-01-06 | Face gear meshing coloring detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114354181B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3795143A (en) * | 1972-09-13 | 1974-03-05 | Gleason Works | Machine for running together bevel or hypoid gears to determine optimum running position of one gear relative to another |
| CN1179210A (en) * | 1995-05-03 | 1998-04-15 | 格里森工场 | Digital imaging of tooth contact pattern |
| CN102749193A (en) * | 2012-07-09 | 2012-10-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Colouring examination method for high-precision central-driving bevel gear |
| CN109341641A (en) * | 2018-11-14 | 2019-02-15 | 中国航发动力股份有限公司 | A kind of gear meshing mark detection method |
-
2022
- 2022-01-06 CN CN202210013627.5A patent/CN114354181B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3795143A (en) * | 1972-09-13 | 1974-03-05 | Gleason Works | Machine for running together bevel or hypoid gears to determine optimum running position of one gear relative to another |
| CN1179210A (en) * | 1995-05-03 | 1998-04-15 | 格里森工场 | Digital imaging of tooth contact pattern |
| CN102749193A (en) * | 2012-07-09 | 2012-10-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Colouring examination method for high-precision central-driving bevel gear |
| CN109341641A (en) * | 2018-11-14 | 2019-02-15 | 中国航发动力股份有限公司 | A kind of gear meshing mark detection method |
Non-Patent Citations (1)
| Title |
|---|
| 梁国明.《实用机械加工检验手册》.北京出版社,1989,222-223. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114354181A (en) | 2022-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113273933B (en) | Cleaning robot, control method and device thereof, and storage medium | |
| CN114354181B (en) | Face gear meshing coloring detection method | |
| JP6086573B2 (en) | Method and apparatus for characterizing pigmented spots and its application in methods for evaluating the coloring or depigmenting effect of cosmetic, skin or pharmaceutical products | |
| CN110448225B (en) | Cleaning strategy adjusting method and system and cleaning equipment | |
| JP2023500675A (en) | Automatic total nail care system, device and method | |
| JP2002122519A (en) | Method and apparatus for measuring surface cleanliness | |
| CN104685103A (en) | Surface treatment process for components composed of aluminium having detection of impermissible overheating | |
| CN203764459U (en) | Imaging agent spraying device for solvent removing type penetrant testing | |
| US20190102894A1 (en) | Automated imaging system for evaluating the curl of a keratinous substrate | |
| JPH08193961A (en) | Method for measuring stain of floor surface and the like | |
| JPWO2009060536A1 (en) | Car paint diagnosis method | |
| Pereira et al. | Atomic force microscopy as a valuable tool in an innovative multi-scale and multi-technique non-invasive approach to surface cleaning monitoring | |
| CN210304890U (en) | Novel dust-binding roller | |
| CN111167804A (en) | Device and method for cleaning composite coating by laser | |
| CN109459386A (en) | Test equipment and test method | |
| Muñoz | Spectrocolorimetric and microscopic techniques for the evaluation of plasticized PVC cleaning: a case study applicable to three‐dimensional objects at museums | |
| Li et al. | Research and achievement on cigarette label printing defect detection algorithm | |
| TWM453851U (en) | Block cleaner and prober device | |
| CN114894653B (en) | Method for testing surface performance of black chromium coating | |
| CN103707703B (en) | Shell electro-plating method | |
| CN218271155U (en) | Flywheel torsion test gauge | |
| CN212646592U (en) | Coupling agent smearing device for ultrasonic guided wave pipeline detection | |
| CN117368122B (en) | FRD cervical dyeing real-time comparison method based on color chart | |
| CN220708696U (en) | Detection device for double combination of angle mirrors | |
| CN213063041U (en) | Novel ancient building is paintd with colored drawing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20221017 Address after: 201800 The first and third floors of Building 6, No. 1180, Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Applicant after: SHANGHAI HELAN TOUPING POWER TECHNOLOGY CO.,LTD. Address before: Room j1852, building 4, zone B, No. 925, Yecheng Road, Jiading Industrial Zone, Jiading District, Shanghai 201800 Applicant before: Shanghai Jingran power technology partnership (L.P.) |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |