CN112928698B - Power cable laying device - Google Patents
Power cable laying device Download PDFInfo
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- CN112928698B CN112928698B CN202110091624.9A CN202110091624A CN112928698B CN 112928698 B CN112928698 B CN 112928698B CN 202110091624 A CN202110091624 A CN 202110091624A CN 112928698 B CN112928698 B CN 112928698B
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- block
- threaded rod
- supporting
- pulley
- sliding
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/36—Securing packages to supporting devices
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- Electric Cable Installation (AREA)
Abstract
The invention discloses a power cable laying device which comprises a base and a driving motor, wherein a first supporting plate is fixedly installed at the top of the base, an installation plate is fixedly installed on the side wall of one end of the first supporting plate, the driving motor is fixedly installed on the installation plate, and a through hole is formed in the installation plate. According to the invention, through the matched use of the base, the driving motor, the first supporting plate, the mounting plate, the through hole, the rotating shaft, the notch, the first threaded rod, the pushing block, the sliding chute, the second threaded rod, the sliding block and the supporting mechanism, the purpose of moving the cable take-up wheel to the rotating shaft by pushing the cable take-up wheel to the bearing plate and then driving the first threaded rod and the second threaded rod to rotate through the driving motor is realized, and meanwhile, the purpose of supporting the cable take-up wheel through the plurality of second supporting plates is realized by pushing the pushing block to move, so that the erection purpose of the cable take-up wheel can be realized, and a large amount of manpower can be saved.
Description
Technical Field
The invention belongs to the technical field of cable laying, and particularly relates to a power cable laying device.
Background
The cable is usually a rope-like cable formed by twisting several or several groups of wires, each group of wires are mutually insulated and usually twisted around a center, the whole outer surface is coated with a high-insulation covering layer, the cable has the characteristics of internal electrification and external insulation, in the process of electric power construction, the laying of the cable is often required, and the power cable is used for urban underground power grids and power supply in industrial and mining enterprises.
The cable is at the laying process, erect cable rolling wheel unsettled usually, then stimulate the cable, make the cable take out from the rolling frame, realize laying the purpose of cable, but the mode of establishing at the rolling frame of current cable rolling wheel carrier is manual operation generally, lift up the rolling wheel through the staff, then erect on the rolling frame, this kind of mode operation process is troublesome, need consume a large amount of manpowers simultaneously, when changing the rolling wheel, also need artifically with the rolling wheel from the rolling frame under the platform, operation process consumes time more, can influence cable laying's efficiency, for solving above-mentioned problem, we invented a power cable laying device.
Disclosure of Invention
The invention aims to solve the defects that a large amount of manpower is consumed and the operation process consumes more time in the prior art, and provides a power cable laying device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a power cable laying device comprises a base and a driving motor, wherein a first supporting plate is fixedly mounted at the top of the base, a mounting plate is fixedly mounted on one side wall of the first supporting plate, the driving motor is fixedly mounted on the mounting plate, a through hole is formed in the mounting plate, a rotating shaft is rotatably connected to the side wall of the other end of the supporting plate, a notch is formed in one side wall of the rotating shaft, a driving shaft of the driving motor is fixedly connected with a first threaded rod which rotatably penetrates through the first supporting plate and the bottom of the notch, a first limiting block is fixedly mounted at the free end of the first threaded rod, and a push block which is sleeved on the first threaded rod in a threaded manner is slidably arranged in the notch;
be provided with same stop gear between the inner wall of ejector pad and notch, it is equipped with a plurality of supporting mechanisms to slide to run through on the lateral wall of notch, the spout has been seted up at the top of base, it is connected with the second threaded rod to rotate on the one end lateral wall of spout, the other end lateral wall setting that runs through the spout is rotated to the free end of second threaded rod, the setting is connected with the transmission of first threaded rod to the second threaded rod, it locates the slider on the second threaded rod to slide to be equipped with the thread bush in the spout, the top of slider is fixed with the loading board, the cable take-up pulley has been placed at the top of loading board, be provided with same slide mechanism between loading board and the base.
Preferably, the limiting mechanism comprises a limiting groove formed in the inner wall of the notch and a second limiting block fixedly installed on the side wall of the push block, and the second limiting block is arranged in the limiting groove in a sliding mode.
Preferably, the supporting mechanism comprises a supporting block which is slidably arranged through the side wall of the notch, a second supporting plate is fixedly mounted at one end of the supporting block, and a return spring which is slidably sleeved on the supporting block is fixedly connected between the second supporting plate and the outer wall of the rotating shaft.
Preferably, one end of the supporting block, which is located in the recess, is arranged in an inclined manner, the side wall of the left end of the pushing block is arranged in an inclined manner, a groove is formed in the bottom of the supporting block, a ball is arranged in the groove in a rolling manner, and a protruding block which is arranged in sliding contact with the ball is fixedly mounted on the inner wall of the groove.
Preferably, the rolling mechanism comprises a pulley groove formed in the top of the base and a pulley fixedly mounted on the bottom of the bearing plate, and the pulley is arranged on the bottom of the pulley groove in a rolling manner.
Preferably, fixed cover is equipped with first belt pulley on the first threaded rod, fixed cover is equipped with the second belt pulley on the second threaded rod, first belt pulley and second belt pulley transmission are connected and are set up.
Preferably, equal fixed mounting has the connecting block on the lateral wall around the base, two the connecting block all is the setting of oblique shape.
Preferably, a through threaded hole is formed in the sliding block, and the second threaded rod is in threaded connection with the threaded hole.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the matched use of the base, the driving motor, the first supporting plate, the mounting plate, the through hole, the rotating shaft, the notch, the first threaded rod, the pushing block, the sliding chute, the second threaded rod, the sliding block and the supporting mechanism, the purpose of moving the cable take-up wheel to the rotating shaft by pushing the cable take-up wheel to the bearing plate and then driving the first threaded rod and the second threaded rod to rotate through the driving motor is realized, and meanwhile, the purpose of supporting the cable take-up wheel through the plurality of second supporting plates is realized by pushing the pushing block to move, so that the erection purpose of the cable take-up wheel can be realized, and a large amount of manpower can be saved.
2. The cable take-up pulley is convenient to replace by matching the base, the driving motor, the pulley groove, the pulley, the supporting block, the convex block, the groove, the ball and the connecting block, the purpose of taking down the cable take-up pulley by reverse rotation of the driving motor is achieved, the cable take-up pulley is convenient to push onto the bearing plate by arranging the connecting block, the purpose of friction force between the bearing plate and the base is achieved by arranging the roller and the roller groove, and the purpose of friction force between the supporting block and the pushing block is achieved by arranging the ball and the convex block.
Drawings
Fig. 1 is a schematic front perspective structural view of a power cable laying apparatus according to the present invention;
fig. 2 is a schematic side view of a power cable laying apparatus according to the present invention;
fig. 3 is a schematic top view of a power cable laying apparatus according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 1 at A;
FIG. 5 is a partial enlarged view of the portion B in FIG. 4;
fig. 6 is a partially enlarged view of C in fig. 1.
In the figure: the cable take-up device comprises a base 1, a driving motor 2, a supporting plate 3, a mounting plate 4, a through hole 5, a rotating shaft 6, a notch 7, a first threaded rod 8, a first limit block 9, a push block 10, a sliding chute 11, a second threaded rod 12, a sliding block 13, a bearing plate 14, a cable take-up pulley 15, a limit groove 16, a second limit block 17, a support block 18, a supporting plate 19, a return spring 20, a convex block 21, a pulley groove 22, a pulley 23, a first pulley 24, a second pulley 25, a connecting block 26, a groove 27 and a ball 28.
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.
Referring to fig. 1-6, a power cable laying device comprises a base 1 and a driving motor 2, a first supporting plate 3 is fixedly installed on the top of the base 1, a mounting plate 4 is fixedly installed on one side wall of the first supporting plate 3, the driving motor 2 is fixedly installed on the mounting plate 4, a through hole 5 is formed in the mounting plate 4, a rotating shaft 6 is rotatably connected to the other side wall of the first supporting plate 3, a notch 7 is formed in one side wall of the rotating shaft 6, a driving shaft of the driving motor 2 is fixedly connected with a first threaded rod 8 which is rotatably arranged to penetrate through the bottom of the first supporting plate 3 and the notch 7, a first limiting block 9 is fixedly installed at the free end of the first threaded rod 8, a pushing block 10 which is sleeved on the first threaded rod 8 is arranged in the notch 7 in a sliding manner, specifically, a through threaded hole is formed in the pushing block 10, and the first threaded rod 8 is in threaded connection with a threaded hole in the pushing block 10, the first limiting block 9 is arranged and used for preventing the push block 10 from falling off from the first threaded rod 8;
be provided with same stop gear between the inner wall of ejector pad 10 and notch 7, it is equipped with a plurality of supporting mechanisms to slide to run through on the lateral wall of notch 7, spout 11 has been seted up at base 1's top, it is connected with second threaded rod 12 to rotate on spout 11's the one end lateral wall, the other end lateral wall that runs through spout 11 is rotated to the free end of second threaded rod 12 sets up, second threaded rod 12 is connected the setting with 8 transmissions of first threaded rod, it locates slider 13 on second threaded rod 12 to slide in spout 11 to be equipped with the screw thread cover, wherein, set up the screw hole that runs through on the slider 13, second threaded rod 12 sets up with screw hole threaded connection, it is concrete, second threaded rod 12 with the setting of screw hole threaded connection on slider 13.
A bearing plate 14 is fixed at the top of the sliding block 13, a cable take-up pulley 15 is placed at the top of the bearing plate 14, and a same sliding mechanism is arranged between the bearing plate 14 and the base 1.
The limiting mechanism comprises a limiting groove 16 formed in the inner wall of the notch 7 and a second limiting block 17 fixedly mounted on the side wall of the push block 10, and the second limiting block 17 is arranged in the limiting groove 16 in a sliding mode.
It should be noted that, by arranging the second limiting groove 16 and the second limiting block 17, when the first threaded rod 8 drives the pushing block 10 to slide in the notch 7, the second limiting block 17 slides in the second limiting groove 16, so that the purpose of limiting the pushing block 10 is achieved, and the pushing block 10 is prevented from rotating along with the first threaded rod 8.
The supporting mechanism comprises a supporting block 18 which penetrates through the side wall of the notch 7 in a sliding mode, a second supporting plate 19 is fixedly mounted at one end of the supporting block 18, and a return spring 20 which is sleeved on the supporting block 18 in a sliding mode is fixedly connected between the second supporting plate 19 and the outer wall of the rotating shaft 6.
It should be noted that, the first threaded rod 8 drives the push block 10 to move towards the supporting block 18, and is used for the supporting block 18 bottom to be the setting of sloping, and the push block 10 left end lateral wall is the setting of sloping simultaneously, from the push block 10 lateral wall when contacting the supporting block 18, can realize the purpose on 18 inclined planes of extrusion supporting block, thereby make the supporting block 18 slide to the outside of pivot 6, make reset spring 20 be in tensile state simultaneously, and the second backup pad 19 is the arc setting simultaneously, is used for realizing the purpose with the circular inside laminating of cable take-up pulley 15.
Wherein, the one end that supporting shoe 18 is located in notch 7 is the setting of taking the form of sloping, and the left end lateral wall of ejector pad 10 is the setting of sloping, and the bottom of supporting shoe 18 is seted up flutedly 27, and the roll is equipped with ball 28 in the flutedly 27, and fixed mounting has the protruding piece 21 with ball 28 sliding contact setting on the inner wall of flutedly 27.
It should be noted that, the grooves 27 and the balls 28 are provided for reducing the friction between the supporting block 18 and the pushing block 10, when the rotating shaft 6 rotates, the balls 28 at the bottom of the supporting block 18 roll on the side wall of the pushing block 10, and meanwhile, the protrusions 21 are provided in the grooves 27, and the balls 28 rub against the protrusions 21 during the rolling process, so as to reduce the friction between the balls 28 and the grooves 27.
Wherein, the rolling mechanism comprises a pulley groove 22 arranged on the top of the base 1 and a pulley 23 fixedly arranged on the bottom of the bearing plate 14, and the pulley 23 is arranged on the bottom of the pulley groove 22 in a rolling manner.
It should be noted that the second threaded rod 12 drives the slider 13 to slide in the sliding groove 11, so as to achieve the purpose of driving the bearing plate 14 to slide on the base 1, the pulley 23 at the bottom of the bearing plate 14 drives the pulley groove 22 at the top of the base 1 to roll, the pulley 23 rolls in the pulley groove 22, so as to achieve the purpose of supporting the bearing plate 14 by rolling friction, and the pulley 23 can achieve the purpose of supporting the bearing plate 14, and the pulley 23 is provided with a plurality of pulleys.
Wherein, fixed cover is equipped with first belt pulley 24 on the first threaded rod 8, and fixed cover is equipped with second belt pulley 25 on the second threaded rod 12, and first belt pulley 24 and second belt pulley 25 transmission are connected and are set up.
It should be noted that, the driving shaft is controlled by the driving motor 2 to rotate in the opposite direction, so that the first threaded rod 8 rotates in the opposite direction, the first threaded rod 8 drives the second threaded rod 12 to rotate in the opposite direction through the first belt pulley 24 and the second belt pulley 25, and in the process of rotating in the opposite direction of the first threaded rod 8, the pushing block 10 is driven to move rightwards, thereby releasing the pushing action on the supporting block 18, and thus returning the second supporting plate 19 by the return spring 20 in the stretched state, thereby releasing the support of the cable take-up pulley 15, the cable take-up pulley 15 moves onto the bearing plate 14, meanwhile, the second threaded rod 12 rotates reversely, the second threaded rod 12 drives the sliding block 13 to move leftwards, the purpose of driving the bearing plate 14 to move leftwards is achieved, the bearing plate 14 drives the cable take-up pulley 15 on the bearing plate to move leftwards, and therefore the purpose of facilitating replacement of the cable take-up pulley 15 is achieved.
Wherein, equal fixed mounting has connecting block 26 on the front and back lateral wall of base 1, and two connecting blocks 26 all are the setting of sloping.
It should be noted that, through setting up connecting block 26, connecting block 26 sets up simultaneously and is the skew shape to be convenient for promote cable take-up pulley 15 to one side connecting block 26 on, then promote to loading board 14 on again, when changing cable take-up pulley 15, then promote cable take-up pulley 15 and roll to the connecting block 26 of opposite side on, can realize taking off cable take-up pulley 15's purpose, then change new cable take-up pulley 15, realize the purpose of being convenient for to change.
In the invention, the cable take-up pulley 15 is pushed to roll onto the connecting block 26 and then roll onto the bearing plate 14 from the connecting block 26, so that the purpose of conveniently pushing the cable take-up pulley 15 onto the bearing plate 14 is realized, then the existing wedge-shaped block is placed on the bearing plate 14 for realizing the purpose of limiting the cable take-up pulley 15 and preventing the cable take-up pulley from rolling on the bearing plate 14, then the driving motor 2 is started, the driving shaft of the driving motor 2 drives the first threaded rod 8 to rotate, the first threaded rod 8 drives the second threaded rod 12 to rotate through the first belt pulley 24 and the second belt pulley 25, because the sliding block 13 is sleeved on the second threaded rod 12 in a threaded manner, the sliding block slides in the sliding groove 11, the sliding block 13 drives the bearing plate 14 to move towards the direction of the rotating shaft 6 at the top of the base 1, and the cable take-up pulley 15 is sleeved outside the rotating shaft 6.
Further, since the pushing block 10 is sleeved on the first threaded rod 8 through a thread, when the driving motor 2 drives the first threaded rod 8 to rotate, the pushing block 10 slides in the notch 7, so that the pushing block 10 slides towards the supporting block 18, so that the pushing block 10 can extrude the inclined surface of the supporting block 18, so that the supporting plate 18 moves towards the outside of the rotating shaft 6, the supporting block 18 drives the second supporting plate 19 to move towards the direction away from the rotating shaft 6, meanwhile, the bearing plate 14 drives the cable take-up pulley 15 to move towards the rotating shaft 6, so that the second supporting plate 19 supports the cable take-up pulley 15, so that the cable take-up pulley 15 is separated from the bearing plate 14, and the purpose of supporting the cable take-up pulley 15 is achieved, when a cable is laid, so that the cable take-up pulley 15 rotates on the rotating shaft 6, and meanwhile, the supporting block 18 rotates on the pushing block 10.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A power cable laying device comprises a base (1) and a driving motor (2), it is characterized in that a first supporting plate (3) is fixedly arranged at the top of the base (1), a mounting plate (4) is fixedly arranged on the side wall of one end of the first supporting plate (3), the driving motor (2) is fixedly arranged on the mounting plate (4), a through hole (5) is arranged on the mounting plate (4), the side wall of the other end of the first supporting plate (3) is rotationally connected with a rotating shaft (6), a notch (7) is arranged on the side wall of one end of the rotating shaft (6), a driving shaft of the driving motor (2) is fixedly connected with a first threaded rod (8) which is rotatably arranged through the first supporting plate (3) and the bottom of the notch (7), a first limiting block (9) is fixedly arranged at the free end of the first threaded rod (8), a push block (10) which is sleeved on the first threaded rod (8) in a threaded manner is arranged in the notch (7) in a sliding manner; the same limiting mechanism is arranged between the push block (10) and the inner wall of the notch (7), a plurality of supporting mechanisms are arranged on the side wall of the notch (7) in a sliding and penetrating way, a sliding groove (11) is arranged at the top of the base (1), a second threaded rod (12) is rotatably connected on the side wall of one end of the sliding chute (11), the free end of the second threaded rod (12) is rotatably arranged through the side wall of the other end of the sliding chute (11), the second threaded rod (12) is in transmission connection with the first threaded rod (8), a slide block (13) which is sleeved on the second threaded rod (12) in a threaded manner is arranged in the chute (11) in a sliding manner, a bearing plate (14) is fixed at the top of the sliding block (13), a cable take-up pulley (15) is arranged at the top of the bearing plate (14), the same sliding mechanism is arranged between the bearing plate (14) and the base (1); the supporting mechanism comprises a supporting block (18) which penetrates through the side wall of the notch (7) in a sliding mode, a second supporting plate (19) is fixedly mounted at one end of the supporting block (18), and a return spring (20) which is sleeved on the supporting block (18) in a sliding mode is fixedly connected between the second supporting plate (19) and the outer wall of the rotating shaft (6).
2. The power cable laying device according to claim 1, wherein the limiting mechanism comprises a limiting groove (16) formed in the inner wall of the notch (7) and a second limiting block (17) fixedly mounted on the side wall of the push block (10), and the second limiting block (17) is slidably arranged in the limiting groove (16).
3. A power cable laying device according to claim 1, wherein one end of the supporting block (18) located in the recess (7) is arranged in a slant manner, the side wall of the left end of the pushing block (10) is arranged in a slant manner, a groove (27) is formed at the bottom of the supporting block (18), a ball (28) is arranged in the groove (27) in a rolling manner, and a protruding block (21) which is arranged in sliding contact with the ball (28) is fixedly mounted on the inner wall of the groove (27).
4. A power cable laying device according to claim 1, wherein the rolling mechanism comprises a pulley groove (22) provided on the top of the base (1) and a pulley (23) fixedly mounted on the bottom of the carrier plate (14), said pulley (23) being rolled on the bottom of the pulley groove (22).
5. A power cable laying device according to claim 1, wherein a first belt pulley (24) is fixedly sleeved on the first threaded rod (8), a second belt pulley (25) is fixedly sleeved on the second threaded rod (12), and the first belt pulley (24) and the second belt pulley (25) are in transmission connection.
6. The power cable laying device according to claim 1, wherein the front and rear side walls of the base (1) are fixedly provided with connecting blocks (26), and the two connecting blocks (26) are obliquely arranged.
7. An electric power cable laying device according to claim 1, wherein the sliding block (13) is provided with a threaded hole therethrough, and the second threaded rod (12) is in threaded connection with the threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110091624.9A CN112928698B (en) | 2021-01-23 | 2021-01-23 | Power cable laying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110091624.9A CN112928698B (en) | 2021-01-23 | 2021-01-23 | Power cable laying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112928698A CN112928698A (en) | 2021-06-08 |
| CN112928698B true CN112928698B (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110091624.9A Active CN112928698B (en) | 2021-01-23 | 2021-01-23 | Power cable laying device |
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| CN (1) | CN112928698B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116062541B (en) * | 2023-03-08 | 2023-06-16 | 中国石油大学(华东) | Cable laying device and method for power engineering based on Internet of things |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10212074A (en) * | 1997-01-29 | 1998-08-11 | Sumitomo Electric Ind Ltd | Back carrying type reel for cable |
| ITRM20020093A1 (en) * | 2002-02-20 | 2003-08-20 | Fibot Holding Ltd | PROCEDURE AND DEVICE FOR LAYING A CABLE, IN PARTICULAR A FIBER OPTIC CABLE, INSIDE A GUIDE TUBE, BY MEANS OF A FLU |
| KR101673517B1 (en) * | 2016-03-29 | 2016-11-07 | 김남호 | Rotation device for cable winding drum |
| CN208690023U (en) * | 2018-10-30 | 2019-04-02 | 湖北凯乐量子通信光电科技有限公司 | Data cable endothelium separator |
| CN110467058A (en) * | 2019-08-19 | 2019-11-19 | 江苏健雄电气安装工程有限公司 | A kind of power line construction is with being twisted machine |
| CN110994528A (en) * | 2019-12-26 | 2020-04-10 | 东阳华锐通讯科技有限公司 | Unwrapping wire mount pad for cable mounting |
| CN211088966U (en) * | 2020-01-18 | 2020-07-24 | 饶浩宜 | Municipal works interlude cable special stand |
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Effective date of registration: 20220609 Address after: 528000 intersection of Xinxing Road, Lishui Town, Nanhai District, Foshan City, Guangdong Province Applicant after: GUANGDONG OUMULONG POWER ENGINEERING CO.,LTD. Address before: 511400 No.8, 3rd Street, Yinping Road, Panyu District, Guangzhou City, Guangdong Province Applicant before: Gao Wei |
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Effective date of registration: 20220621 Address after: 528000 intersection of Xinxing Road, Lishui Town, Nanhai District, Foshan City, Guangdong Province Applicant after: GUANGDONG OUMULONG POWER ENGINEERING CO.,LTD. Applicant after: FOSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID Co.,Ltd. Address before: 528000 intersection of Xinxing Road, Lishui Town, Nanhai District, Foshan City, Guangdong Province Applicant before: GUANGDONG OUMULONG POWER ENGINEERING CO.,LTD. |
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