CN215105637U - Construction machine - Google Patents
Construction machine Download PDFInfo
- Publication number
- CN215105637U CN215105637U CN202120789213.2U CN202120789213U CN215105637U CN 215105637 U CN215105637 U CN 215105637U CN 202120789213 U CN202120789213 U CN 202120789213U CN 215105637 U CN215105637 U CN 215105637U
- Authority
- CN
- China
- Prior art keywords
- frame bar
- diagonal
- lateral
- bar
- driver
- 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
- 238000010276 construction Methods 0.000 title description 21
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
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
- E02F9/16—Cabins, platforms, or the like, for drivers
- E02F9/163—Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS]
-
- 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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
Abstract
The utility model provides an engineering machine, include: a boarding unit (100) that provides a space in which a driver can board; and a roof guard (400) that is installed above the boarding section (100) to protect the driver, the roof guard (400) including: a longitudinal frame bar (410) extending in a longitudinal direction; a lateral frame bar (420) extending in a lateral direction; and a diagonal frame bar (430) extending in a direction oblique to the longitudinal and lateral directions.
Description
Technical Field
The present invention relates to a construction machine, and more particularly, to a construction machine that can perform civil engineering or construction work.
Background
In general, a construction machine is a machine such as an excavator, a loader, or the like used in civil engineering or construction work, and includes: a boarding unit that provides a space in which a driver can board; and a working unit which is operated by a driver to perform excavation work for excavating the ground, loading work for carrying earth and sand, crushing work for removing a building, soil preparation work for settling the ground, and the like.
Here, when a falling object is directed toward the riding part during the work performed by the working part, a driver may be injured, and thus the construction machine may also include a top guard (top guard) installed above the riding part to protect the driver.
Fig. 1 is a plan view showing a top guard in a conventional construction machine.
Referring to fig. 1, the conventional construction machine includes a top guard 40 installed above the boarding part 10 to protect a driver of the boarding part 10, and the top guard 40 includes a pole forming a main body of the top guard 40 and a cover member 45 positioned at an opposite side of the boarding part 10 with reference to the pole and covering an upper portion of the boarding part 10.
However, the conventional construction machine has a problem that the top guard (40) cannot sufficiently protect the driver from the falling object.
Further, the construction machine further includes an antenna for communication, and the antenna should be disposed above the boarding portion 10, which is a high position, in order to increase a transmission/reception rate of the antenna, but since the cover 45 (when the antenna is blocked by the cover 45, the transmission/reception rate of the antenna sharply decreases), the antenna cannot be disposed above the boarding portion 10 but at a side portion of the boarding portion 10, and thus there is a problem that the transmission/reception rate of the antenna decreases.
Further, when the cover member (45) is cut in order to provide the antenna on the upper portion of the boarding portion (10), the rigidity of the top guard (40) is weakened, and thus the top guard (40) further fails to protect the driver from falling objects.
Documents of the prior art
Patent document
Patent document 1: china utility model bulletin No. 203361230.
SUMMERY OF THE UTILITY MODEL
Therefore, an object of the present invention is to provide an engineering machine that can sufficiently protect a driver from the injury of a falling object.
Furthermore, another object of the present invention is to provide a construction machine capable of sufficiently protecting a driver from injury of a falling object and improving a transmission/reception rate of an antenna.
The above-mentioned utility model can be realized through following technical scheme.
In order to achieve the above object, the present invention provides a construction machine, including: a boarding unit 100 that provides a space in which a driver can board; and a top guard 400 installed above the boarding portion 100 to protect the driver, the top guard 400 including: a longitudinal frame bar 410 extending in a longitudinal direction; a lateral frame bar 420 extending in a lateral direction; and diagonal frame bars 430 extending in a direction oblique to the longitudinal and lateral directions.
Wherein the lateral frame bar 420 includes: a first lateral frame rod 422 disposed in front;
a second lateral frame rod 424 disposed at the rear; and a third transverse frame rod 426 disposed between the first transverse frame rod 422 and the second transverse frame rod 424, the diagonal frame rod 430 comprising: a first diagonal frame bar 432 extending in a first diagonal direction between the second transverse frame bar 424 and the third transverse frame bar 426; and a second diagonal frame bar 434 extending along a second diagonal direction between the second transverse frame bar 424 and the third transverse frame bar 426.
Wherein the first diagonal frame bar 432 is formed to extend from the second transverse frame bar 424 to the third transverse frame bar 426, and the second diagonal frame bar 434 is formed to extend from the second transverse frame bar 424 to the first diagonal frame bar 432.
The second diagonal frame bar 434 is connected to the middle end of the first diagonal frame bar 432.
The connecting portion C between the first diagonal frame rod 432 and the second diagonal frame rod 434 is disposed above the head of the driver.
An antenna accommodating space S1 accommodating a micro antenna is formed between the first diagonal frame bar 432 and the second diagonal frame bar 434.
Wherein the top guard 400 further includes a cover member 450, the cover member 450 covering an upper portion of a space between the second lateral hanger bar 424 and the third lateral hanger bar 426.
The top guard 400 further includes a cover 450, and the cover 450 is supported by the diagonal frame bars 430.
Here, the cover member 450 of the top shield 400 includes a cut-out portion 452, and the cut-out portion 452 communicates at least a portion of the antenna receiving space S1 in which the micro antenna is received with the external space.
The cut portion 452 is formed such that a radial distance from an inner circumferential surface of the cut portion 452 to the micro antenna is equal to or greater than a predetermined value.
The utility model has the following effects.
The utility model discloses an engineering machine tool includes: a boarding unit that provides a space in which a driver can board; and a roof guard installed above the boarding portion to protect the driver, the roof guard including: a longitudinal frame bar extending in a longitudinal direction; a transverse frame bar extending in a transverse direction; and an oblique frame rod extending in a direction oblique to the longitudinal and lateral directions, thereby sufficiently protecting a driver from a falling object.
In addition, the top guard further includes a cover member covering the diagonal frame bars, the diagonal frame bars including a first diagonal frame bar and a second diagonal frame bar, an antenna receiving space for receiving a micro antenna is formed between the first diagonal frame bar and the second diagonal frame bar, and the cover member includes a cut-out portion for communicating at least a portion of the antenna receiving space with an external space, thereby improving a transceiving rate of the antenna while sufficiently protecting a driver from a falling object.
Drawings
Fig. 1 is a plan view showing a top guard in a conventional construction machine.
Fig. 2 is a perspective view showing a boarding portion and a top guard in a construction machine according to an embodiment of the present invention.
Figure 3 is a plan view showing the top guard of figure 2,
fig. 4 is a rear view of fig. 3.
Reference numerals
100: boarding section, 400: top guard, 410: longitudinal frame bar, 420: transverse frame rod, 422: first transverse frame bar, 424: second transverse frame bar, 426: third transverse frame bar, 430: diagonal frame bar, 432: first diagonal frame bar, 434: second diagonal frame bar, 450: cover, 452: cut-out portion, S1: an antenna housing space.
Detailed Description
The construction machine according to the present invention will be described in detail with reference to the accompanying drawings.
Fig. 2 is a perspective view showing a boarding part and a top guard in a construction machine according to an embodiment of the present invention, fig. 3 is a plan view showing the top guard of fig. 2, and fig. 4 is a back view of fig. 3.
Referring to fig. 2 to 4, a construction machine according to an embodiment of the present invention may include: a boarding unit 100 that provides a space in which a driver can board; a working unit (not shown) that is operated by the driver to perform excavation work for excavating the ground, loading work for carrying earth and sand, crushing work for removing a building, soil preparation work for settling the ground, and the like; and a top guard 400 mounted above the boarding portion 100 to protect the driver from falling objects during work performed by the working portion (not shown).
The boarding portion 100 is formed in an upper rotating body to be described later, and may include a boarding seat (not shown) on which the driver can sit, and a pedal (not shown) and a lever (not shown) disposed around the boarding seat (not shown).
The working unit (not shown) may include a lower traveling structure movable along the ground, an upper rotating structure provided rotatably on an upper portion of the lower traveling structure, a boom rotatably coupled to the upper rotating structure, a boom cylinder configured to rotate the boom, an arm rotatably coupled to a distal end portion of the boom, an arm cylinder configured to rotate the arm, a bucket rotatably coupled to a distal end portion of the arm, and a bucket cylinder configured to rotate the bucket.
The top guard 400 may include a hack lever forming a main body of the top guard 400.
The poles may include longitudinal poles 410 extending in a longitudinal direction (front-rear direction), transverse poles 420 extending in a transverse direction (left-right direction), and diagonal poles 430 extending in a direction oblique to the longitudinal and transverse directions.
The longitudinal bars 410 may include a first longitudinal bar 412 extending in the longitudinal direction from the left side, and a second longitudinal bar 414 formed in parallel with the first longitudinal bar 412 and spaced apart in the transverse direction and extending in the longitudinal direction from the right side.
The lateral frame bar 420 may include: a first transverse frame bar 422 extending transversely from the front end of the first longitudinal frame bar 412 to the front end of the second longitudinal frame bar 414; a second transverse frame bar 424 extending in a transverse direction from a rear end of the first longitudinal frame bar 412 to a rear end of the second longitudinal frame bar 414; and a third transverse strut 426 extending transversely between the first transverse strut 422 and the second transverse strut 424 from the middle end of the first longitudinal strut 412 to the middle end of the second longitudinal strut 414.
In addition, the transverse frame bar 420 may further include a fourth transverse frame bar 428, the fourth transverse frame bar 428 extending in a transverse direction from the rear end of the first longitudinal frame bar 412 to the rear end of the second longitudinal frame bar 414 at an opposite side of the third transverse frame bar 426 with respect to the second transverse frame bar 424 at a more rear position than the second transverse frame bar 424, which will be described later.
The diagonal frame bar 430 may include: a first diagonal frame bar 432 extending in a first diagonal direction between the second transverse frame bar 424 and the third transverse frame bar 426 from an end of the second transverse frame bar 424 to a middle end of the third transverse frame bar 426; and a second diagonal frame bar 434 extending in a second diagonal direction different from the first diagonal direction from the other end of the second lateral frame bar 424 to the middle end of the first diagonal frame bar 432 between the second lateral frame bar 424 and the third lateral frame bar 426.
Here, in addition to the first diagonal frame bar 432, the second diagonal frame bar 434 may be extended from the other end of the second transverse frame bar 424 to a connection portion between the first diagonal frame bar 432 and the third transverse frame bar 426, for example, in such a manner that the second diagonal frame bar 434 is connected to the middle end of the third transverse frame bar 426, in which case, since the welding strength of the first diagonal frame bar 432 and the second diagonal frame bar 434 is weaker than that of the present embodiment, it is preferable that the second diagonal frame bar 434 is connected to the middle end of the first diagonal frame bar 432, like the present embodiment.
In addition, it is preferable that the connection point C between the first diagonal frame bar 432 and the second diagonal frame bar 434, which has improved welding strength, is disposed above the head of the driver from the viewpoint of protecting the driver.
On the other hand, the front end of the first longitudinal frame bar 412, the front end of the first transverse frame bar 422, the front end of the second longitudinal frame bar 414, and the third transverse frame bar 426 form a front portion of the top guard 400 facing the window of the boarding part 100, the rear end of the first longitudinal frame bar 412, the second transverse frame bar 424, the rear end of the second longitudinal frame bar 414, and the third transverse frame bar 426 form a rear portion of the top guard 400 facing the boarding seat (not shown), a window-bar-shaped screen 440 may be provided at the front portion of the top guard 400 to secure a visual field, and a plate-shaped cover 450 may be provided at the rear portion of the top guard 400 to protect the driver.
Here, the cover member 450 serves to protect the driver by covering the upper portion of the rear portion of the top guard 400, and the cover member 450 may be formed to be supported by the rear end of the first longitudinal frame bar 412, the second lateral frame bar 424, the rear end of the second longitudinal frame bar 414, and the third lateral frame bar 426 to increase rigidity, thereby more effectively protecting the driver from a falling object.
In addition, the cover member 450 may be formed to be supported by the first diagonal frame bar 432 and the second diagonal frame bar 434 to further increase rigidity, thereby more effectively protecting the driver.
On the other hand, the first diagonal frame bar 432 and the second diagonal frame bar 434 may form a substantially triangular antenna accommodating space S1 accommodating an antenna (not shown) for communication between the first diagonal frame bar 432, the second diagonal frame bar 434 and the second transverse frame bar 424.
In order to prevent the cover 450 from reducing the transmission/reception rate of the antenna (not shown), the cover 450 may include a cut portion 452 that communicates at least a portion of the antenna accommodating space S1 with an external space, the cut portion 452 may be formed in a triangular shape or a trapezoidal shape corresponding to the shape of the antenna accommodating space S1, and a radial distance from an inner circumferential surface of the cut portion 452 to the antenna (not shown) may be greater than or equal to a predetermined value.
Here, in order to improve the transmission/reception rate, the antenna (not shown) may be preferably disposed at the center of the antenna accommodating space S1 and formed as a micro antenna (not shown).
Next, the working and effects of the construction machine according to the present embodiment will be described.
That is, when the driver operates the pedal (not shown) and the lever (not shown) of the boarding portion 100, the lower traveling body moves to the work place, and the boom cylinder, the arm cylinder, and the boom cylinder are operated, so that the work such as digging the ground or shoveling the ground can be performed.
Additionally, the top guard 400 may include protection of the driver from falling objects during operation.
Here, since the construction machine of the present embodiment includes the diagonal frame bars 430, the rigidity of the top guard 400 is improved, so that the driver can be effectively protected from the falling object.
In addition, since the first diagonal frame bar 432 and the second diagonal frame bar 434 of the diagonal frame bar 430 extend in different directions from each other, the rigidity of the overhead guard 400 is further improved, so that the driver protection effect can be improved.
In addition, since the second diagonal frame bar 434 is connected to the middle end portion of the first diagonal frame bar 432, the welding strength is improved, and thus the driver protection effect can be further improved.
In addition, since the connection portion of the first diagonal frame bar 432 and the second diagonal frame bar 434 is disposed above the head of the driver, the driver can be protected more effectively.
In addition, since the cover member 450 is provided, the driver protection effect is improved, and in addition, the cover member 450 is supported by the first diagonal frame bar 432 and the second diagonal frame bar 434 in addition to the first longitudinal frame bar 412, the second longitudinal frame bar 414, the second lateral frame bar 424 and the third lateral frame bar 426, so that the rigidity of the cover member 450 is improved, and the driver protection effect can be further improved.
On the other hand, since the antenna accommodating space S1 is sufficiently secured by the first diagonal bar 432 and the second diagonal bar 434, the antenna (not shown) can be disposed at the upper portion of the riding part 100. This can improve the transmission/reception rate of the antenna (not shown).
In addition, since the cover 450 includes the cut-out portion 452, it is possible to prevent the cover 450 from causing a reduction in the transmission/reception rate of the antenna (not shown) while sufficiently protecting the driver from falling objects. Here, as described above, the cover member 450 is supported by the first diagonal frame bar 432 and the second diagonal frame bar 434 in addition to the first longitudinal frame bar 412, the second longitudinal frame bar 414, the second lateral frame bar 424 and the third lateral frame bar 426, and thus, even if the cut-out portion 452 is included, rigidity is not greatly impaired, and thus the driver can be sufficiently protected. Further, as described above, since the connecting portion C between the first diagonal frame bar 432 and the second diagonal frame bar 434 is disposed above the head of the driver, the cut-out portion 452 is located at the rear side with respect to the head of the driver, and thus, even if a falling object falls between the cut-out portions 452, the driver can be protected from injury.
In addition, since the antenna housing space S1 is formed in a substantially triangular shape, the antenna (not shown) is disposed at the center of the antenna housing space S1, the cut-out portion 452 is formed in a shape (e.g., a triangular shape or a trapezoidal shape) corresponding to the antenna housing space S1, and a radial distance from the inner circumferential surface of the cut-out portion 452 to the antenna (not shown) is formed to be equal to or greater than a predetermined value, the transmission/reception ratio of the antenna (not shown) can be further improved.
In addition, when the antenna (not shown) is formed as a micro antenna (not shown), the transmission/reception rate of the antenna (not shown) can be further improved.
On the other hand, in the case of the present embodiment, further including a fourth transverse frame bar 428 extending in the transverse direction from the rear end of the first longitudinal frame bar 412 to the rear end of the second longitudinal frame bar 414 at a position more rearward than the second transverse frame bar 424, the cover member 450 may be formed not to cover the space between the second transverse frame bar 424 and the fourth transverse frame bar 428 (hereinafter referred to as a wire harness accommodation space S2). Thereby, the wire harness (not shown) connected to the rear lamp 700 of the boarding part 100 can be accommodated and exposed in the wire harness accommodation space S2, so that the wire harness (not shown) can be easily connected to the rear lamp 700, and the wire harness (not shown) and the rear lamp 700 can be easily maintained.
On the other hand, in the case of the present embodiment, although the description has been given taking an excavator as an example, the roof guard 400 may be applied to a bulldozer, a shovel, a forklift, and the like.
Claims (10)
1. A work machine, comprising:
a boarding unit (100) that provides a space in which a driver can board; and
a top guard (400) mounted above the boarding section (100) to protect the driver,
the overhead guard (400) includes:
a longitudinal frame bar (410) extending in a longitudinal direction;
a lateral frame bar (420) extending in a lateral direction; and
and a diagonal frame bar (430) extending in a direction oblique to the longitudinal and lateral directions.
2. The work machine of claim 1,
the lateral frame bar (420) comprises:
a first lateral frame bar (422) disposed forward;
a second lateral frame rod (424) disposed at the rear; and
a third transverse frame bar (426) arranged between the first transverse frame bar (422) and the second transverse frame bar (424),
the diagonal frame bar (430) includes:
a first diagonal frame bar (432) extending in a first diagonal direction between the second transverse frame bar (424) and the third transverse frame bar (426); and
a second diagonal frame bar (434) extending in a second diagonal direction between the second transverse frame bar (424) and the third transverse frame bar (426).
3. A working machine according to claim 2,
the first diagonal frame bar (432) is formed to extend from the second lateral frame bar (424) to the third lateral frame bar (426),
the second diagonal frame bar (434) is formed to extend from the second lateral frame bar (424) to the first diagonal frame bar (432).
4. A working machine according to claim 2,
the second diagonal frame bar (434) is connected to the middle end of the first diagonal frame bar (432).
5. A working machine according to claim 2,
the connecting portion (C) between the first diagonal frame bar (432) and the second diagonal frame bar (434) is disposed above the head of the driver.
6. A working machine according to claim 2,
an antenna receiving space (S1) for receiving a micro antenna is formed between the first diagonal frame bar (432) and the second diagonal frame bar (434).
7. A working machine according to claim 2,
the overhead guard (400) further includes a cover (450), the cover (450) covering an upper portion of a space between the second lateral hanger bar (424) and the third lateral hanger bar (426).
8. The work machine of claim 1,
the overhead guard (400) further includes a cover member (450), and the cover member (450) is supported to the diagonal frame bar (430).
9. The work machine of claim 1,
the cover member (450) of the top shield (400) includes a cut-out portion (452), and the cut-out portion (452) communicates at least a portion of an antenna accommodating space (S1) accommodating the micro antenna with an external space.
10. A working machine according to claim 9,
the cut portion (452) is formed such that a distance in a radial direction from an inner peripheral surface of the cut portion (452) to the micro antenna is equal to or greater than a predetermined value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2020-0046198 | 2020-04-16 | ||
| KR1020200046198A KR20210128245A (en) | 2020-04-16 | 2020-04-16 | Construction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215105637U true CN215105637U (en) | 2021-12-10 |
Family
ID=78268690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120789213.2U Active CN215105637U (en) | 2020-04-16 | 2021-04-15 | Construction machine |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20210128245A (en) |
| CN (1) | CN215105637U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855918A (en) * | 2022-07-07 | 2022-08-05 | 江苏扬城建设有限公司 | Portable multi-functional excavator driver's cabin protector of convenient regulation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203361230U (en) | 2013-06-27 | 2013-12-25 | 福田雷沃国际重工股份有限公司 | Excavator cab protection device |
-
2020
- 2020-04-16 KR KR1020200046198A patent/KR20210128245A/en unknown
-
2021
- 2021-04-15 CN CN202120789213.2U patent/CN215105637U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| KR20210128245A (en) | 2021-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4657212B2 (en) | Construction machinery cab | |
| CN215105637U (en) | Construction machine | |
| EP2631372A1 (en) | Construction machine cab having a rollover protection structure | |
| JP6232248B2 (en) | Small swivel excavator | |
| JP5996122B2 (en) | Work vehicle cab and manufacturing method thereof | |
| JP5071298B2 (en) | Construction machinery | |
| CN215053430U (en) | Construction machine | |
| JP2001173017A (en) | Construction machine | |
| EP2987917B1 (en) | Bucket, and work vehicle provided with same | |
| KR101363193B1 (en) | Cabin protection device for construction vehicle | |
| JP4425218B2 (en) | Construction machinery and its protrusions | |
| EP1756371A1 (en) | Construction equipment with excavation and loading function | |
| KR20110088291A (en) | Attachment of backhoe | |
| EP2192240A1 (en) | Footstep for excavator | |
| KR102271813B1 (en) | Excavator bucket to remove tree roots | |
| JP3898511B2 (en) | Excavator working equipment | |
| US20180328004A1 (en) | Adapter system for cutting tooth | |
| JP2006342664A (en) | Excavation and ground leveling/fairing bucket | |
| JPH0663697U (en) | Spare cutter device for shield machine | |
| KR20100074515A (en) | Bucket loadage confirmable structure of construction equipment | |
| CN212223996U (en) | Construction machine | |
| EP3546661B1 (en) | Wheel loader | |
| KR102382424B1 (en) | Rotatable link for excavator | |
| JP3672052B2 (en) | Excavator cab head guard | |
| JP2592591Y2 (en) | Hydraulic excavator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Inchon, South Korea Patentee after: Hyundai Yingweigao Co.,Ltd. Address before: Inchon, South Korea Patentee before: DOOSAN INFRACORE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |