CN106549351B - A kind of anchoring of overhead power line - Google Patents
A kind of anchoring of overhead power line Download PDFInfo
- Publication number
- CN106549351B CN106549351B CN201611215650.3A CN201611215650A CN106549351B CN 106549351 B CN106549351 B CN 106549351B CN 201611215650 A CN201611215650 A CN 201611215650A CN 106549351 B CN106549351 B CN 106549351B
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- Prior art keywords
- cable
- sleeve pipe
- crossbeam
- channel
- support
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- Expired - Fee Related
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- 238000004873 anchoring Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 208000002925 dental caries Diseases 0.000 claims abstract description 4
- 210000004907 gland Anatomy 0.000 claims description 30
- 238000009434 installation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of anchoring of overhead power line,Including base and 2 channel-section steels being oppositely arranged being fixedly connected on above base,2 channel-section steels are mutually not connected to,The open side of 2 channel-section steels, which is oppositely arranged, to be made to form 2 track cavitys being parallel to each other between 2 channel-section steels,Crossbeam is provided with the inside of track cavity,Gear is respectively arranged with crossbeam both ends,The tooth being meshed with gear is respectively arranged with the opposite end face of channel-section steel inwall,Driven gear is provided with the middle part of crossbeam,Upper end cover is provided with above 2 channel-section steels,The screw mandrel being meshed with driven gear is provided with the middle part of upper end cover,Screw mandrel one end is rotatably connected on base,The present invention is by using handle rotary screw rod,Screw mandrel is set to drive crossbeam to vertically move,Cable end is fixed on crossbeam,While the fixation of cable bracing wire end can be achieved,Adjust its elasticity.
Description
Technical field
The present invention relates to a kind of anchoring of overhead power line.
Background technology
Bracing wire would generally be set in the structures such as electric power overhead steel tower, cable and damper ends is fixed on steel tower bottom or ground,
Steel tower is set to keep stable.Existing guy structure, fixed position, elasticity inconvenience are determined generally according to the length of cable of bracing wire
Regulation, influences using effect.
The content of the invention
It is an object of the invention to provide a kind of anchoring of overhead power line, by using handle rotary screw rod,
Make screw mandrel drive crossbeam to vertically move, cable end is fixed on crossbeam, you can realize the same of the fixation of cable bracing wire end
When, adjust its elasticity.
The present invention is achieved through the following technical solutions：
A kind of anchoring of overhead power line, including base and be fixedly connected on above base 2 are oppositely arranged
Channel-section steel, 2 channel-section steels are mutually not connected to, and the open side of 2 channel-section steels is oppositely arranged to make to form 2 between 2 channel-section steels and is parallel to each other
Track cavity, be provided with crossbeam on the inside of track cavity, gear be respectively arranged with crossbeam both ends, it is opposite in channel-section steel inwall
The tooth being meshed with gear is respectively arranged with side, driven gear is provided with the middle part of crossbeam, is provided with above 2 channel-section steels
Upper end cover, the screw mandrel being meshed with driven gear is provided with the middle part of upper end cover, screw mandrel one end is rotatably connected on base, screw mandrel
The other end runs through and is rotatably connected on upper end cover, and the positioning hole of the annular array centered on screw mandrel is provided with upper end cover,
Annular recess is provided with the upper surface of upper end cover, positioning hole is located on the inside of annular recess, and screw mandrel upper end is provided with hexagonal
Counterbore, screw mandrel upper end is provided with handle.
Further, for the present invention is better achieved, handle middle part is provided with cross section as regular hexagon on lower surface
Rotating shaft, is provided with locating rod on handle edge lower surface, and the length of locating rod is less than the length of rotating shaft, positioned when pushing handle
Bar, which can be plugged in corresponding positioning hole, makes rotating shaft be fixed on the inside of hexagonal counterbore.
Further, for the present invention is better achieved, support, the U-shaped structure of support, support both ends are set with crossbeam
Driven gear both sides are rotatably connected on respectively.
Further, for the present invention is better achieved, portion is provided with sleeve pipe away from crossbeam one end in the bracket, in sleeve pipe
Side is provided with gland, and gland is threaded in sleeve pipe away from support one end, in gland towards being provided with pressure on the side end face of support one
Bar, is provided with the cable-through hole for laying cable on sleeve side walls, and cable-through hole is symmetrically arranged 2 along casing axis direction
Through hole, sleeve pipe side is provided with the link for mounting cable and damper ends.
Further, for the present invention is better achieved, centring ring is provided with sleeve pipe, centring ring is threaded in sleeve pipe
On outer wall, the groove for connecting the side cable-through hole is provided with close to link side in sleeve pipe, link is located at groove close to support side,
In centring ring inclined-plane is provided with the inwall of link one end.
Further, for the present invention is better achieved, sunk in gland away from being provided with cross side on the end face of depression bar one end
Groove, the corresponding through hole in position is provided with the opposite side wall of sleeve pipe, clamping screw is provided with through hole.
The present invention compared with prior art, has the advantages that：
The present invention by using the beam structure being arranged on the inside of channel-section steel, can make to be articulated in the cable and damper ends of crossbeam with
Elasticity is adjusted in crossbeam longitudinal movement, due to that using screw structure, can enter above upper end cover to the position of crossbeam
Row regulation, it is easy to adjust, and be engaged using gear with the tooth on the inside of track cavity, make overall structure transmission more efficient,
Structure is more firm.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is internal structure schematic diagram of the present invention；
Fig. 2 is upper end cover structural representation of the present invention.
Wherein：101. base, 102. channel-section steels, 103. track cavitys, 104. crossbeams, 105. gears, 106. driven gears,
107. upper end cover, 108. screw mandrels, 109. positioning holes, 110. hexagonal counterbores, 111. handles, 112. rotating shafts, 113. locating rods, 114.
Support, 115. sleeve pipes, 116. glands, 117. depression bars, 118. cable-through holes, 119. links, 120. centring rings, 121. grooves, 122.
Inclined-plane, 123. clamping screws, 124. annular recess.
Embodiment
The present invention is described in further detail with reference to specific embodiment, but embodiments of the present invention are not limited to
This.
As shown in figure 1, the invention discloses a kind of anchoring of overhead power line, drawn for fixing electric force pole tower
Line, its structure include base 101 and are fixedly connected on 2 channel-section steels 102 being oppositely arranged of the top of base 101, set on base
Preformed hole is put, the convenient bottom that base is fixed on to pre-buried equipment or electric force pole tower, in of the invention, two channel-section steels is parallel to each other
Set, 2 channel-section steels 102 are mutually not connected to, and are oppositely arranged the open side of 2 channel-section steels 102, make shape between 2 channel-section steels 102
Into 2 track being parallel to each other cavitys 103, the inner side of track cavity 103 is provided with crossbeam 104, make the diameter parallel of crossbeam in
On the inside of two channel-section steels, gear is respectively arranged with the both ends of crossbeam 104 respectively for plane where base upper surface, crossbeam both ends
105, gear key is connected on crossbeam, be respectively arranged with what is be meshed with gear 105 on the opposite side of the inwall of channel-section steel 102
Tooth, make crossbeam along channel-section steel short transverse move when, the tooth at crossbeam both ends can vertically move along track cavity；Pass through setting
Gear is meshed with the tooth on the inside of channel-section steel, and crossbeam can be made to keep the state vertically moved, make its movement locus constant, it is not easy to
Inclination is produced with respect to base, it can be made to keep stable state；
In the present invention, the middle part of crossbeam 104 is provided with driven gear 106, makes driven gear key connection in the middle part of crossbeam, such as
Shown in Fig. 2, upper end cover 107 is provided with above 2 channel-section steels 102, upper end cover is welded or is bolted on channel-section steel upper surface,
Upper end cover is parallel to each other with base, the screw mandrel 108 being meshed with driven gear 106 is provided with the middle part of upper end cover 107, makes silk
The one end of screw mandrel 108 is rotatably connected on base 101, and run through the other end of screw mandrel 108 by bar perpendicular to plane where upper end cover
And be rotatably connected on upper end cover 107, screw mandrel upper end is stretched out above upper end cover；By driving screw mandrel to rotate, you can make screw mandrel
Drive meshed driven gear to rotate, so that crossbeam relatively rotates, under the drive of crossbeam, make gear along track
Cavity is vertically moved, and line of power cable and damper ends are articulated on crossbeam, you can realizes the regulation of cable elasticity；
Screw mandrel is fixed for convenience, the array annular in shape centered on screw mandrel 108 is provided with upper end cover 107
Positioning hole 109, positioning hole on upper end cover, positioning hole can be arranged into through-hole structure, in the upper of upper end cover 107 respectively
Annular recess 124 is provided with end face, makes annular recess coaxial with screw mandrel, positioning hole 109 is located at the inner side of annular recess 124, is
Facilitate rotary screw rod, the present invention is provided with hexagonal counterbore 110 in the upper end of screw mandrel 108, makes hexagonal counterbore and screw mandrel coaxial, in silk
The upper end of bar 108 is provided with handle 111, and the rotating shaft 112 that cross section is regular hexagon is provided with the middle part lower surface of handle 111, is made
The rotating shaft can be plugged in hexagonal counterbore, pass through rotating shaft, you can drive screw mandrel to rotate, the present invention is at the edge of handle 111
Locating rod 113 is provided with lower surface, the length of locating rod 113 is less than the length of rotating shaft 112, when moving up handle, makes locating rod
When being removed from positioning hole, rotating shaft is embedded in hexagonal counterbore, now swing handle, make rotating shaft drive screw mandrel to rotate, due to setting
Annular recess has been put, in operation, handle has been moved up, locating rod lower end is located inside annular recess, when relatively rotating handle, make
Rotating shaft drives screw mandrel to rotate, and the locating rod that lower end is connected in annular recess can be defined to the position of handle, be avoided
Handle produces inclination, and handle keeps stable at one's leisure；It is determined that during horizontal depth of beam, copper pipe pushes handle 111, makes locating rod
113 lower ends are plugged in corresponding positioning hole 109, and now rotating shaft 112 is fixed on the inner side of hexagonal counterbore 110, because locating rod is fixed
In positioning hole on upper end cover so that screw mandrel is unable to the rotation of opposite upper lid, and the driven gear for making to be meshed with screw mandrel is kept
It is stable, and then crossbeam is kept stable in fixed position, the cable and damper ends being articulated on crossbeam can keep constant position, make it
Rate of tension keeps steady state.
Embodiment 1：
Because bracing wire cable is that relative power shaft tower is obliquely installed, in the present embodiment, cable and damper ends are mounted for convenience, it is excellent
Selection of land, support 114 is set with crossbeam 104, in fixed cable, cable can be fixed on support, pacified for convenience
Dress, 114 U-shaped structure of support, makes the both ends of support 114 be rotatably connected on the both sides of driven gear 106 respectively, and the end of cable is hung
Mid-stent is connected on, because holder pivots are connected on crossbeam so that relative to adjust between support and crossbeam during installation
Angle, you can the angle of adjustment cable as needed, it is in optimum state to make the angle between cable and base, convenient as needed
Determine integrally-built installation site.
Embodiment 2：
As shown in figure 1, on the basis of embodiment 1, cable is fixed for convenience for the present embodiment, it is preferable that
The middle part of support 114 is provided with sleeve pipe 115 away from the one end of crossbeam 104, sleeve pipe one end is fixedly connected on support, in sleeve pipe 115
Inner side is provided with gland 116, gland is located at sleeve pipe away from support one end, gland 116 is threaded in sleeve pipe 115 away from support
114 one end, when needed, gland can be made to be moved along casing axis direction, for convenience to cable end by rotating gland
Portion is fixed, and in the present embodiment, the cable-through hole 118 for laying cable is provided with the side wall of sleeve pipe 115, make cable-through hole with
The axis direction of sleeve pipe is parallel, cable-through hole 118 be along symmetrically arranged 2 through holes of the axis direction of sleeve pipe 115, will wherein one
Individual cable-through hole is as line-entering hole, and another cable-through hole is as wire hole, when installing cable, makes cable by line-entering hole from gland
One end is input to close to support one end, and cable and damper ends then are passed through into wire hole, from close support one end through close to gland one
End, cable is fixed for convenience, the side of sleeve pipe 115 is provided with the link 119 for mounting cable and damper ends, by cable
End from wire hole be output on the outside of gland when, in cable and damper ends mounting hook, using existing hook, mount hook
Cable can be made to keep stable on link, now, gland is screwed to the close support side of sleeve pipe, adjust cable for convenience
Elasticity, in gland 116 towards depression bar 117 is provided with the side end face of support 114 1, continue to rotate gland to holder orientation,
Depression bar on gland is against on cable, and because cable ends are by being articulated on sleeve pipe, in the presence of depression bar, depression bar pushes away
Moving-wire cable moves to holder orientation, the cable of connection electric force pole tower of jacket exterior is now placed under the extruding of depression bar, to branch
Frame and the movement of crossbeam direction, make cable gradually be tensioned.
When mounted, by adjusting the position of gland, you can the rate of tension of cable is adjusted, because cable is fixed by sleeve pipe
On support so that cable structure is more firm, when in use, cable and damper ends can also be welded on link, make cable one
End keeps stationary state, promotes cable to be tensioned it using depression bar.
Embodiment 3：
In the present embodiment, cable and damper ends are fixed for convenience, it is preferable that be provided with centring ring on sleeve pipe 115
120, external screw thread is set on sleeve outer wall, internal thread is set on centring ring inwall, centring ring 120 is threaded in sleeve pipe
On 115 outer walls, along casing axis direction rotational positioning circle, you can its relative position is adjusted, in sleeve pipe 115 close to link 119
Side is provided with the groove 121 for connecting the side cable-through hole 118, and the groove can be located in the middle part of sleeve pipe, cable and damper ends is led to
Cross cable-through hole to export from groove, link 119 is located at groove 121 and worn close to the side of support 114, cable from the cable-through hole of side
Enter, by sleeve pipe after support one end, exported from the cable-through hole of opposite side, when cable and damper ends reach groove, make cable end
Portion is stretched out from groove, sets and links up with cable and damper ends, hook is articulated on link, in order that cable can be firmly fixed to
On sleeve pipe, the present invention is provided with inclined-plane 122 in centring ring 120 on one end inwall of link 119, to link direction rotational positioning
Circle, makes the inclined-plane on centring ring be against on cable, continues to screw centring ring, centring ring extrudes cable close to groove one end, makes line
Cable-end portion is squeezed between inclined-plane and sleeve outer wall, its facing sleeve is kept stable, can be greatly improved the jail of cable and damper ends
Solidity, avoid bracing wire cable and damper ends from producing and release.
It is further preferred that in the present embodiment, released in order to avoid gland produces, in gland 116 away from the one end of depression bar 117
Cross side deep gouge is provided with end face, by setting criss-cross deep gouge, gland can be conveniently rotated, facilitate mechanization to rotate
Gland, in order to avoid gland or internal surface of sleeve pipe produce stripped thread and cause gland to come off, position is provided with the opposite side wall of sleeve pipe 115
Corresponding through hole is put, clamping screw 123 is provided with through hole.Clamping screw is run through corresponding through hole, make clamping screw
Above the horizontal gland in sleeve pipe so that gland can not remove out of sleeve pipe, it is kept stable, avoid releasing.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (6)
- A kind of 1. anchoring of overhead power line, it is characterised in that：Including base (101) and it is fixedly connected on base (101) 2 above the channel-section steels (102) being oppositely arranged, 2 channel-section steels (102) are mutually not connected to, the open side of 2 channel-section steels (102) Being oppositely arranged makes to form 2 track cavitys (103) being parallel to each other between 2 channel-section steels (102), on the inside of track cavity (103) Crossbeam (104) is provided with, gear (105) is respectively arranged with crossbeam (104) both ends, in the opposite side of channel-section steel (102) inwall On be respectively arranged with the tooth being meshed with gear (105), driven gear (106) is provided with the middle part of the crossbeam (104), in 2 grooves Upper end cover (107) is provided with above steel (102), the silk being meshed with driven gear (106) is provided with the middle part of upper end cover (107) Bar (108), screw mandrel (108) one end are rotatably connected on base (101), and screw mandrel (108) other end runs through and is rotatably connected on On end cap (107), the positioning hole (109) of the annular array centered on screw mandrel (108) is provided with upper end cover (107), upper Annular recess (124) is provided with the upper surface of end cap (107), positioning hole (109) is located on the inside of annular recess (124), in silk Bar (108) upper end is provided with hexagonal counterbore (110), and screw mandrel (108) upper end is provided with handle (111).
- A kind of 2. anchoring of overhead power line according to claim 1, it is characterised in that：In the middle part of handle (111) The rotating shaft (112) that cross section is regular hexagon is provided with lower surface, locating rod is provided with handle (111) edge lower surface (113), the length of locating rod (113) is less than the length of rotating shaft (112), and locating rod (113) being capable of grafting when pushing handle (111) Rotating shaft (112) is set to be fixed on the inside of hexagonal counterbore (110) in corresponding positioning hole (109).
- A kind of 3. anchoring of overhead power line according to claim 1, it is characterised in that：On crossbeam (104) Support (114), support (114) U-shaped structure are set with, support (114) both ends are rotatably connected on driven gear (106) two respectively Side.
- A kind of 4. anchoring of overhead power line according to claim 3, it is characterised in that：In support (114) Portion is provided with sleeve pipe (115) away from crossbeam (104) one end, and gland (116), gland (116) spiral shell are provided with the inside of sleeve pipe (115) Line is connected to sleeve pipe (115) away from support (114) one end, in gland (116) towards being provided with pressure on the side end face of support (114) one Bar (117), is provided with the cable-through hole (118) for laying cable in sleeve pipe (115) side wall, and cable-through hole (118) is along sleeve pipe (115) symmetrically arranged 2 through holes of axis direction, sleeve pipe (115) side is provided with the link for mounting cable and damper ends (119)。
- A kind of 5. anchoring of overhead power line according to claim 4, it is characterised in that：On sleeve pipe (115) Centring ring (120) is provided with, centring ring (120) is threaded on sleeve pipe (115) outer wall, in sleeve pipe (115) close to link (119) side is provided with the groove (121) for connecting the side cable-through hole (118), and link (119) is located at groove (121) close to support (114) side, inclined-plane (122) is provided with the inwall of link (119) one end in centring ring (120).
- A kind of 6. anchoring of overhead power line according to claim 4, it is characterised in that：It is remote in gland (116) Cross side deep gouge is provided with tripping bar (117) one end end face, it is relative to be provided with position in the opposite side wall of sleeve pipe (115) The through hole answered, clamping screw (123) is provided with through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215650.3A CN106549351B (en) | 2016-12-26 | 2016-12-26 | A kind of anchoring of overhead power line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215650.3A CN106549351B (en) | 2016-12-26 | 2016-12-26 | A kind of anchoring of overhead power line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106549351A CN106549351A (en) | 2017-03-29 |
| CN106549351B true CN106549351B (en) | 2018-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611215650.3A Expired - Fee Related CN106549351B (en) | 2016-12-26 | 2016-12-26 | A kind of anchoring of overhead power line |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134747B (en) * | 2017-05-21 | 2018-10-16 | 烟台东岳科技有限公司 | A kind of electric wire regulation device |
| CN111614013B (en) * | 2020-06-08 | 2021-07-16 | 安徽威龙电力器材有限公司 | Electric power cable line extension device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009044939A (en) * | 2007-08-11 | 2009-02-26 | Chugoku Electric Power Co Inc:The | Method of construction works for extending lead line, and dead end support for lead line used for the method |
| CN103388418A (en) * | 2013-08-01 | 2013-11-13 | 国家电网公司 | Method for connecting pulling wires through transmission line non-self-supporting pole/tower pulling wire repair and backup protection type connector |
| CN105356399A (en) * | 2015-12-10 | 2016-02-24 | 国网四川省电力公司攀枝花供电公司 | Wheel double-ring wire-clamping structure |
| CN205565530U (en) * | 2016-03-31 | 2016-09-07 | 国网山东省电力公司平阴县供电公司 | Tensioning device for electric wire |
-
2016
- 2016-12-26 CN CN201611215650.3A patent/CN106549351B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009044939A (en) * | 2007-08-11 | 2009-02-26 | Chugoku Electric Power Co Inc:The | Method of construction works for extending lead line, and dead end support for lead line used for the method |
| CN103388418A (en) * | 2013-08-01 | 2013-11-13 | 国家电网公司 | Method for connecting pulling wires through transmission line non-self-supporting pole/tower pulling wire repair and backup protection type connector |
| CN105356399A (en) * | 2015-12-10 | 2016-02-24 | 国网四川省电力公司攀枝花供电公司 | Wheel double-ring wire-clamping structure |
| CN205565530U (en) * | 2016-03-31 | 2016-09-07 | 国网山东省电力公司平阴县供电公司 | Tensioning device for electric wire |
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| CN106549351A (en) | 2017-03-29 |
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Inventor after: Wang Dajun Inventor after: Lv Wei Inventor after: Li Qiang Inventor after: Qin Cong Inventor after: Yu Limei Inventor after: Bi Weixiang Inventor after: Guo Fumei Inventor after: Zhang Rui Inventor after: Li Feng Inventor after: He Chuanhui Inventor after: Liu Jie Inventor after: Xing Limei Inventor after: Li Meimei Inventor after: Sun Jiantao Inventor after: Wang Fang Inventor after: Zheng Wei Inventor after: Liu Guoqiang Inventor after: Zhang Wentao Inventor after: Xing Hao Inventor after: Fan Fan Inventor before: Wang Dajun Inventor before: Lv Wei Inventor before: Li Qiang Inventor before: Qin Cong Inventor before: Yu Limei Inventor before: Bi Weixiang Inventor before: Guo Fumei Inventor before: Zhang Rui Inventor before: Li Feng Inventor before: He Chuanhui Inventor before: Xing Limei Inventor before: Sun Jiantao Inventor before: Wang Fang Inventor before: Zheng Wei Inventor before: Liu Guoqiang Inventor before: Zhang Wentao Inventor before: Xing Hao Inventor before: Fan Fan |
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