CN115126035B - Bucket tooth and toothholder quick connect auxiliary device - Google Patents
Bucket tooth and toothholder quick connect auxiliary device Download PDFInfo
- Publication number
- CN115126035B CN115126035B CN202210476719.7A CN202210476719A CN115126035B CN 115126035 B CN115126035 B CN 115126035B CN 202210476719 A CN202210476719 A CN 202210476719A CN 115126035 B CN115126035 B CN 115126035B
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- tooth
- mounting
- piston
- bucket
- movable
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
- E02F9/2816—Mountings therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
- E02F9/2816—Mountings therefor
- E02F9/2833—Retaining means, e.g. pins
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
Abstract
The invention discloses a bucket tooth and tooth holder quick connection auxiliary device which comprises a mounting plate, bucket teeth, a pin shaft and a mounting cylinder, wherein the mounting plate is fixedly provided with the tooth holder through a fastening bolt, the tooth holder is arranged at equal intervals on the mounting plate, first mounting holes are symmetrically formed in the side walls of two sides of the tooth holder, second mounting holes are symmetrically formed in the side walls of two sides of the tooth holder, an auxiliary mounting mechanism is arranged in the mounting cylinder and comprises a limiting groove formed in the inner side of the mounting cylinder, and movable grooves are symmetrically formed in the inner walls of two sides of the limiting groove. According to the invention, the bucket teeth are quickly mounted on the tooth holder through the pin shafts through the auxiliary mounting mechanism, meanwhile, the stability of the pin shafts mounted between the bucket teeth and the tooth holder is enhanced through synchronous cooperation of the auxiliary positioning mechanism and the positioning knocking mechanism, the shaking of the bucket teeth during working is reduced, the abrasion of the inner walls is reduced, the service life of the bucket teeth is prolonged, and the bucket teeth have good application prospects.
Description
Technical Field
The invention relates to the technical field of bucket tooth installation, in particular to a bucket tooth and tooth holder quick connection auxiliary device.
Background
The excavator is a common device widely applied to the fields of engineering machinery and mining machinery, wherein the bucket teeth of the excavator are important parts on the excavator, the bucket teeth can protect the working end of the bucket of the excavator from premature and quick abrasion, meanwhile, the bucket teeth can reduce the stressed area of the bucket, the pressure of the bucket cutting into the ground is increased, the cutting-in capacity of the bucket of the excavator is enhanced, and when the bucket teeth are worn and need to be replaced, the bucket teeth are arranged on the tooth holder through the pin shafts, so that the working end of the bucket can keep good impact force, and the working efficiency of the excavator is guaranteed.
The existing bucket tooth security rotating process requires that a worker knocks and smashes a pin shaft repeatedly, and then a pin shaft penetrates into a mounting hole of a tooth holder, so that the bucket tooth is stably connected with the tooth holder, when the bucket tooth on the non-edge side of a bucket is mounted, the gap between the tooth holders is very small, the knocking and smashing installation is very inconvenient, the vertical knocking and smashing installation of the pin shaft cannot be realized, the pin shaft is inclined when being laterally installed, and therefore, the bucket tooth is easy to incline and shake in installation, the stability of the bucket tooth is poor in working, the inner side of the bucket tooth is seriously worn, the normal use of the bucket tooth is seriously influenced, and the bucket tooth is to be improved.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a rapid connection auxiliary device for bucket teeth and tooth holders.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the bucket tooth and tooth holder quick connection auxiliary device comprises a mounting plate, bucket teeth, a pin shaft and a mounting cylinder, wherein the mounting plate is fixedly provided with the tooth holder through a fastening bolt, the tooth holder is arranged at equal intervals on the mounting plate, first mounting holes are symmetrically formed in the side walls of the two sides of the tooth holder, second mounting holes are symmetrically formed in the side walls of the two sides of the tooth holder, and an auxiliary mounting mechanism is arranged in the mounting cylinder;
the auxiliary installation mechanism comprises a limit groove which is formed in the inner side of an installation cylinder, the inner walls of two sides of the limit groove are symmetrically provided with movable grooves, the inside of the movable groove is provided with an auxiliary positioning mechanism, the auxiliary positioning mechanism comprises two movable rods which are fixedly connected to the bottom wall of the limit groove, the two movable rods are respectively located in the outer sides of the movable groove, the outer sides of the two movable rods are respectively and rotatably provided with a movable block, one side of the movable block, which is close to the movable groove, is fixedly provided with two limit springs, the other ends of the limit springs are fixedly connected to the inner wall of the movable groove, and one side, which is far away from the auxiliary positioning mechanism, of the installation cylinder is provided with a positioning knocking mechanism.
Preferably, the movable groove is provided with an inclined plane, the transverse section of the movable block is provided with a trapezoid, and the inclined plane slope of the trapezoid section of the movable block is consistent with the inclined plane slope of the movable groove.
Preferably, the positioning knocking mechanism comprises a knocking block which is slidably connected to the top of the mounting cylinder, the tail end of the knocking block is fixedly connected with a first piston, a hydraulic cavity is formed in the mounting cylinder, the first piston is slidably mounted on the inner wall of the top end of the hydraulic cavity, two second pistons are symmetrically slidably mounted on the inner side wall of the hydraulic cavity, which is close to the limiting groove, of the hydraulic cavity, a sliding rod is fixedly connected to the other end of each second piston, and a wedge-shaped block is fixedly connected to the other end of each sliding rod.
Preferably, the cross section of the wedge block is set to be right trapezoid, one side of the right-angle waist of the trapezoid cross section of the wedge block is tightly attached to the inner wall of the limit groove, and the sliding rod is parallel to the transverse inner wall of the limit groove.
Preferably, the inside of hydraulic pressure chamber is filled with hydraulic oil, the sliding connection region of knocking piece and mounting cylinder roof is equipped with sealing washer, first piston and second piston are all closely laminated with the inner wall of hydraulic pressure chamber.
Preferably, the diameter value of the first mounting hole is smaller than the diameter value of the second mounting hole.
Preferably, the first piston and the second piston are both circular, and the area value of the first piston is four times that of the second piston.
Preferably, the pin shaft is provided with a full pin and a half pin, and the half pin is provided with conical pins with different sizes at two sides.
Compared with the prior art, the invention provides the auxiliary device for quickly connecting the bucket teeth and the tooth holders, which has the following beneficial effects:
1. according to the invention, the bucket tooth is quickly installed through the auxiliary installation mechanism, and meanwhile, the installation of the pin shaft perpendicular to the tooth holder and the side wall of the bucket tooth is realized through the matching arrangement among the installation cylinder, the knocking block and the wedge block, so that the effect of vertically penetrating and fixing the pin shaft into the first installation hole and the second installation hole is achieved, the effect of stably installing the bucket tooth on the tooth holder is further achieved, and the problem that the bucket tooth on the inner side is difficult to install in the prior art is solved.
2. According to the invention, the limiting and clamping of the bucket teeth in the installation process are realized through the auxiliary positioning mechanism, meanwhile, the clamping and limiting of the bucket teeth with different widths are realized through the matched arrangement of the movable groove, the movable rod, the movable block and the limiting spring, the effect of rapid installation is achieved, and the device is suitable for rapid assembly of bucket teeth with different specifications.
3. According to the invention, the lateral installation and fixation of the pin shaft are realized through the positioning knocking mechanism, meanwhile, the sliding of the wedge block is realized through the matching arrangement among the knocking block, the first piston, the hydraulic cavity and the second piston, so that the effect of vertically fixing the pin shaft is achieved, the stability of fixing the bucket teeth and the tooth holder of the pin shaft is improved, and the bucket teeth shaking is remarkably reduced.
According to the invention, the bucket teeth are quickly mounted on the tooth holder through the pin shafts through the auxiliary mounting mechanism, meanwhile, the stability of the pin shafts mounted between the bucket teeth and the tooth holder is enhanced through synchronous cooperation of the auxiliary positioning mechanism and the positioning knocking mechanism, the shaking of the bucket teeth during working is reduced, the abrasion of the inner walls is reduced, the service life of the bucket teeth is prolonged, and the bucket teeth have good application prospects.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the internal cross-sectional structure of the auxiliary positioning mechanism of the present invention;
FIG. 3 is a schematic side view of the interior structure of the mounting cylinder of the present invention;
FIG. 4 is a schematic diagram of the internal structure of the mounting cylinder of the present invention in front view;
fig. 5 is a schematic top view of the inner structure of the mounting cylinder of the present invention.
In the figure: 1. a mounting plate; 2. a tooth holder; 3. a fastening bolt; 4. a first mounting hole; 5. bucket teeth; 6. a second mounting hole; 7. a mounting cylinder; 71. a limit groove; 72. a movable groove; 73. a movable rod; 74. a movable block; 75. a limit spring; 8. knocking the block; 9. a first piston; 10. a hydraulic chamber; 11. a second piston; 12. a slide bar; 13. wedge blocks; 14. and a pin shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-5, an auxiliary device for quickly connecting a bucket tooth with a tooth holder comprises a mounting plate 1, a bucket tooth 5, a pin shaft 14 and a mounting cylinder 7, wherein the mounting plate 1 is fixedly provided with the tooth holder 2 through a fastening bolt 3, the tooth holder 2 is arranged at equal intervals on the mounting plate 1, first mounting holes 4 are symmetrically formed in two side walls of the tooth holder 2, second mounting holes 6 are symmetrically formed in two side walls of the tooth holder 2, an auxiliary mounting mechanism is arranged in the mounting cylinder 7, when the bucket tooth 5 is mounted, the bucket tooth 5 is sleeved on the tooth holder 2, the pin shaft 14 sequentially penetrates through the second mounting holes 6 and the first mounting holes 4, and then the mounting cylinder 7 is sleeved on the outer side of the bucket tooth 5;
the auxiliary installation mechanism comprises a limit groove 71 which is formed in the inner side of an installation cylinder 7, movable grooves 72 are symmetrically formed in the inner walls of the two sides of the limit groove 71, an auxiliary positioning mechanism is arranged in the movable groove 72, the auxiliary positioning mechanism comprises two movable rods 73 which are fixedly connected to the bottom wall of the limit groove 71, the two movable rods 73 are respectively located in the outer sides of the movable groove 72, movable blocks 74 are rotatably arranged on the outer sides of the two movable rods 73, one side of each movable block 74, which is close to the movable groove 72, is fixedly provided with two limit springs 75, the other ends of the two limit springs 75 are fixedly connected to the inner wall of the movable groove 72, the installation cylinder 7 is sleeved on the outer side of the bucket tooth 5, two side walls of the bucket tooth 5 are in extrusion contact with the movable blocks 74 in the inner side of the limit groove 71 in the installation cylinder 7, so that the movable blocks 74 rotate along the two sides of the movable rods 73, and then the limit springs 75 are extruded and deform, when the width of the bucket tooth 5 is large, the limit springs 75 deform to drive the side walls of the movable blocks 74 to stably clamp the side walls of the bucket tooth 5 through the elastic force of the limit springs 75, the auxiliary positioning mechanism is installed on the side walls of the bucket tooth 5, and the side walls of the bucket tooth 5 are matched with the movable blocks 7, and the two side walls of the bucket tooth 5 are matched with the movable blocks 7 in a rapid installation cylinder 7, and the two side of the two side walls of the bucket tooth 5, and the bucket tooth 5 are matched with the two different in the width of the movable positioning mechanism, and the bucket tooth 7, and the bucket tooth 5.
Example two
As shown in fig. 1-2, the present embodiment is substantially the same as embodiment 1, preferably, the movable groove 72 is provided with an inclined plane, the transverse section of the movable block 74 is provided with a trapezoid, the slope of the inclined plane of the trapezoid section of the movable block 74 is consistent with the slope of the inclined plane of the movable groove 72, so that when the outer side walls of two sides of the bucket tooth 5 are contacted with the movable block 74, the movable block 74 rotates to the inside of the movable groove 72, thereby realizing the clamping of the outer side walls of the movable block 74 to the side walls of the bucket tooth 5 under the left and right elasticity of the limit spring 75, and reducing the shaking of the bucket tooth 5 in the process of rotating safely.
Example III
As shown in fig. 1-5, this embodiment is basically the same as embodiment 1, preferably, the location knocking mechanism includes a knocking block 8 slidingly connected to the top of the mounting cylinder 7, the end fixedly connected with first piston 9 of the knocking block 8, the hydraulic cavity 10 is opened inside the mounting cylinder 7, the first piston 9 is slidingly mounted on the top inner wall of the hydraulic cavity 10, two second pistons 11 are symmetrically slidingly mounted on the inner side wall of the hydraulic cavity 10 near the limiting groove 71, the other ends of the two second pistons 11 are fixedly connected with slide bars 12, the other ends of the slide bars 12 are fixedly connected with wedge blocks 13, after the auxiliary positioning mechanism clamps and limits the bucket teeth 5, the first piston 9 moves downwards along the inner part of the hydraulic cavity 10 through the knocking block 8, the second pistons 11 slide under the hydraulic force, and then the wedge blocks 13 slide towards one side of the pin shafts 14, the continuous knocking block 8 makes the wedge blocks 13 slide continuously, and finally the pin shafts 14 completely penetrate into the inner parts of the second mounting holes 6 and the first mounting holes 4, thereby realizing the fixation of the pin shafts 14, the fixation of the tooth shafts 14, the fixed side-to the fixed teeth 9, the fixed tooth seats 2 are realized through the side-to the fixed teeth 9, the fixed and the fixed teeth 14, and the fixed stability of the fixed teeth 14 are realized.
Example IV
As shown in fig. 3-5, the present embodiment is substantially the same as embodiment 1, preferably, the cross section of the wedge block 13 is set to be a right trapezoid, one side of the right-angled waist of the trapezoid cross section of the wedge block 13 is closely attached to the inner wall of the limit groove 71, the slide bar 12 is parallel to the transverse inner wall of the limit groove 71, so that the positioning knocking mechanism is ensured to drive the inclined plane of the wedge block 13 to slide transversely along the side walls of two sides of the bucket tooth 5, so that the pin 14 is completely inserted into the second mounting hole 6, the effect of vertically fixing the pin 14 is achieved, and the stability of fixing the bucket tooth 5 and the tooth holder 2 by the pin 14 is improved.
Example five
As shown in fig. 1-5, in this embodiment, the interior of the hydraulic chamber 10 is substantially the same as that of embodiment 1, preferably, hydraulic oil is filled in the hydraulic chamber, and a sliding connection area between the knocking block 8 and the top wall of the mounting cylinder 7, which is driven by the first piston 9 to move by the second piston 11, is provided with a sealing gasket, and the first piston 9 and the second piston 11 are tightly attached to the inner wall of the hydraulic chamber 10, so as to ensure the tightness of the first piston 9 and the second piston 11;
the diameter value of the first mounting hole 4 is smaller than that of the second mounting hole 6, so that when the pin 14 is knocked and mounted, the pin 14 passes through the first mounting hole 4 and is mounted on the bucket tooth 5 through the second mounting hole 6;
the first piston 9 and the second piston 11 are both arranged in a round shape, the area value of the first piston 9 is four times that of the second piston 11, and the acting force between the wedge block 13 and the pin shaft 14 is further increased by the hydraulic Pascal principle, so that the complete penetrating installation of the pin shaft 14 is ensured;
the round pin axle 14 sets up to full round pin and half round pin, and half round pin sets up to the conical round pin of both sides size difference, and when the bucket tooth 5 of installation outside, directly through striking round pin axle 14 realization round pin axle 14's perpendicular installation that runs through, when the bucket tooth 5 of installation inboard, use half round pin to realize the pin joint installation to bucket tooth 5 both sides, ensure that both sides half round pin all runs through the installation on tooth holder 2 with the lateral wall of bucket tooth 5 perpendicularly.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The utility model provides a bucket tooth and toothholder quick connect auxiliary device, includes mounting panel (1), bucket tooth (5), round pin axle (14), mounting cylinder (7), mounting panel (1) is through fastening bolt (3) fixed mounting has toothholder (2), a serial communication port, equidistant setting on mounting panel (1) is followed to toothholder (2), first mounting hole (4) have all been seted up to the both sides lateral wall of toothholder (2) symmetry, second mounting hole (6) have all been seted up to the both sides lateral wall of toothholder (2) symmetry, the inside of mounting cylinder (7) is equipped with auxiliary installation mechanism;
the auxiliary mounting mechanism comprises a limiting groove (71) formed in the inner side of a mounting cylinder (7), two limiting springs (75) are symmetrically formed in the inner walls of the two sides of the limiting groove (71), an auxiliary positioning mechanism is arranged in the limiting groove (72), the auxiliary positioning mechanism comprises two movable rods (73) fixedly connected to the bottom wall of the limiting groove (71), the two movable rods (73) are respectively located in the outer side of the limiting groove (72), movable blocks (74) are rotatably mounted on the outer sides of the two movable rods (73), two limiting springs (75) are fixedly mounted on one side, close to the movable groove (72), of each movable block (74), the other ends of the limiting springs (75) are fixedly connected to the inner wall of the corresponding limiting groove (72), and a positioning knocking mechanism is arranged on one side, far away from the auxiliary positioning mechanism, of the inner side of the mounting cylinder (7).
2. A rapid connection assistance device for teeth and toothholder according to claim 1, characterized in that the movable groove (72) is provided as a slope, the transverse section of the movable block (74) is provided as a trapezoid, and the slope of the trapezoid section of the movable block (74) is kept consistent with the slope of the movable groove (72).
3. The bucket tooth and toothholder quick connection auxiliary device according to claim 1, characterized in that, the location is strikeed the mechanism and is included sliding connection at the knocking block (8) at installation section of thick bamboo (7) top, the first piston (9) of end fixedly connected with of knocking block (8), hydraulic pressure chamber (10) have been seted up to the inside of installation section of thick bamboo (7), first piston (9) slidable mounting is on the top inner wall of hydraulic pressure chamber (10), the inside wall symmetry slidable mounting that hydraulic pressure chamber (10) is close to spacing groove (71) has two second pistons (11), two the other end of second piston (11) is fixedly connected with slide bar (12), the other end of slide bar (12) is fixedly connected with wedge (13).
4. A bucket tooth and tooth quick connection auxiliary device according to claim 3, wherein the cross section of the wedge-shaped block (13) is in a right trapezoid shape, one side of the right-angle waist of the trapezoid cross section of the wedge-shaped block (13) is tightly attached to the inner wall of the limit groove (71), and the sliding rod (12) is parallel to the transverse inner wall of the limit groove (71).
5. A bucket tooth and tooth quick connection auxiliary device according to claim 3, wherein the hydraulic cavity (10) is filled with hydraulic oil, a sliding connection area between the knocking block (8) and the top wall of the mounting cylinder (7) is provided with a sealing gasket, and the first piston (9) and the second piston (11) are tightly attached to the inner wall of the hydraulic cavity (10).
6. A tooth and holder quick connect attachment as claimed in claim 1, characterized in that the diameter of the first mounting hole (4) is smaller than the diameter of the second mounting hole (6).
7. A tooth and tooth holder quick connect attachment as defined in claim 3, characterised in that the first piston (9) and the second piston (11) are each provided in a circular shape, the area value of the first piston (9) being four times the area value of the second piston (11).
8. A tooth and tooth holder quick connect attachment as defined in claim 6, wherein said pin (14) is provided as a full pin and a half pin, said half pin being provided as a conical pin having two different sizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476719.7A CN115126035B (en) | 2022-04-30 | 2022-04-30 | Bucket tooth and toothholder quick connect auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476719.7A CN115126035B (en) | 2022-04-30 | 2022-04-30 | Bucket tooth and toothholder quick connect auxiliary device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115126035A CN115126035A (en) | 2022-09-30 |
| CN115126035B true CN115126035B (en) | 2023-10-20 |
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ID=83376624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210476719.7A Active CN115126035B (en) | 2022-04-30 | 2022-04-30 | Bucket tooth and toothholder quick connect auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115126035B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1062393A1 (en) * | 1998-03-10 | 2000-12-27 | Odin Ireland | Excavation bucket incorporating an impact actuator assembly |
| CN103452163A (en) * | 2013-09-12 | 2013-12-18 | 太原重工股份有限公司 | Excavator and bucket tooth connection assembly thereof |
| CN204339706U (en) * | 2014-11-21 | 2015-05-20 | 天津市中机雄风机械有限公司 | A kind of more changing device of excavator bucket teeth |
| CN204339705U (en) * | 2014-11-21 | 2015-05-20 | 天津市中机雄风机械有限公司 | A kind of excavator bucket teeth erects the handler of bearing pin |
-
2022
- 2022-04-30 CN CN202210476719.7A patent/CN115126035B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1062393A1 (en) * | 1998-03-10 | 2000-12-27 | Odin Ireland | Excavation bucket incorporating an impact actuator assembly |
| CN103452163A (en) * | 2013-09-12 | 2013-12-18 | 太原重工股份有限公司 | Excavator and bucket tooth connection assembly thereof |
| CN204339706U (en) * | 2014-11-21 | 2015-05-20 | 天津市中机雄风机械有限公司 | A kind of more changing device of excavator bucket teeth |
| CN204339705U (en) * | 2014-11-21 | 2015-05-20 | 天津市中机雄风机械有限公司 | A kind of excavator bucket teeth erects the handler of bearing pin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115126035A (en) | 2022-09-30 |
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Address after: 242300 Fancun Road, heli Park, Ningguo Economic and Technological Development Zone, Xuancheng City, Anhui Province Applicant after: Ningguo Kaiyuan Electric POWER WEAR Resistant MATERIALS Co.,Ltd. Address before: 242300 Fancun Road, heli Park, Ningguo Economic and Technological Development Zone, Xuancheng City, Anhui Province Applicant before: NINGGUO KAIYUAN ELECTRIC POWER WEAR RESISTANT MATERIALS Co.,Ltd. |
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