CN113445895A - Electric pole climbing device capable of working in hot-line mode - Google Patents
Electric pole climbing device capable of working in hot-line mode Download PDFInfo
- Publication number
- CN113445895A CN113445895A CN202110747612.7A CN202110747612A CN113445895A CN 113445895 A CN113445895 A CN 113445895A CN 202110747612 A CN202110747612 A CN 202110747612A CN 113445895 A CN113445895 A CN 113445895A
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- CN
- China
- Prior art keywords
- longitudinal
- hoop
- climbing device
- hole
- pole
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/50—Joints or other connecting parts
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/50—Joints or other connecting parts
- E06C7/505—Anchors being adapted to fix a ladder to a vertical structure, e.g. ladder hooks
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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
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Ladders (AREA)
Abstract
The invention discloses an electric pole climbing device capable of working in a hot-line manner, which comprises: the clasping mechanism is used for clasping the electric pole; the support frame body is fixedly arranged on the clasping mechanism; the mounting plate bodies are at least two and are respectively fixedly arranged at different height positions of the support frame body, and each mounting plate body is provided with a vertically arranged mounting through hole; the insulating short ladder can movably penetrate through the mounting through hole; and the fixing mechanism is arranged on the mounting plate body and is used for fixing the insulating short ladder on the mounting plate body. Compare with current climbers mode of climbing the pole, net live working personnel safety station position on the pole has effectively been solved to this device, reduces and skids, falls the pole, electrocutes the risk.
Description
Technical Field
The invention relates to an electric pole climbing device capable of working in a hot-line mode, and belongs to the technical field of electric pole working.
Background
The existing distribution network live working mode is that climbers are adopted to climb an electric pole and serve as insulating stations of operating personnel. However, through a lot of work and actual findings of the applicant, the existing climbers are influenced by the pole type structure and the environment to different degrees, and have the risk of falling down and electric shock. In addition, relatively safe insulated arm cars cannot reach mountainous fields due to road influences.
Disclosure of Invention
Based on the above, the invention provides the electric pole climbing device capable of live working, which provides a safe station for distribution network live working personnel on the electric pole, reduces the risks of slipping, dropping and electric shock, and overcomes the defects of the prior art.
The technical scheme of the invention is as follows: a live working pole climbing device, wherein the device comprises:
the clasping mechanism is used for clasping the electric pole;
the support frame body is fixedly arranged on the clasping mechanism;
the mounting plate bodies are at least two and are respectively fixedly arranged at different height positions of the support frame body, and each mounting plate body is provided with a vertically arranged mounting through hole;
the insulating short ladder can movably penetrate through the mounting through hole;
and the fixing mechanism is arranged on the mounting plate body and is used for fixing the insulating short ladder on the mounting plate body.
In one example, the clasping mechanism comprises a first hoop and a second hoop, and the first hoop and the second hoop are used for clasping the electric pole at different height positions.
In one example, the first anchor ear and the second anchor ear are both nylon wheel anchor ears, and nylon wheels on the nylon wheel anchor ears can roll along the circumferential direction of the electric pole.
In one example, the support frame body includes:
the upper frame plate is arranged on the side surface of the first hoop;
the lower frame plate is arranged on the side surface of the second hoop;
the connecting rod is arranged between the upper frame plate and the lower frame plate;
wherein, two the mounting plate body is installed respectively on the upper ledge plate with on the lower ledge plate.
In one example, the insulating short ladder comprises:
two longitudinal rods which are oppositely arranged at intervals;
and the cross rods are arranged between the two longitudinal rods at intervals.
In one example, the mounting through hole includes two longitudinal holes and a strip-shaped hole, the two longitudinal through holes are respectively located at two sides of the strip-shaped hole, the longitudinal through holes are suitable for accommodating the longitudinal rods, and the strip-shaped hole is suitable for accommodating the transverse rod.
In one example, rotatable pulleys are provided on opposite sides of the longitudinal bore, the pulleys having concave surfaces that match the profile of the side rails.
In one example, the fixing mechanism includes:
the slot is arranged on the mounting plate body and is positioned above the strip-shaped hole;
and the inserting plate can be arranged in the inserting groove in a penetrating way to be used as a support of the cross rod.
In one example, the top end of the longitudinal rod is provided with a falling-prevention sleeve, and the size of the falling-prevention sleeve is larger than the diameter of the longitudinal hole so as to prevent the longitudinal rod from falling out of the longitudinal hole downwards.
In one example, the lower part of the short insulating ladder is provided with an anti-falling bolt, and the anti-falling bolt is arranged on the two vertical rods in a penetrating manner so as to prevent the short insulating ladder from being separated out of the longitudinal hole upwards.
The invention has the beneficial effects that: after adopting this device, when the pole operation is climbed to needs, earlier with the cohesion mechanism cohesion on the pole, make support frame body be the level setting, then upwards vertical lift up insulating short ladder to insert insulating short ladder downwards gradually in the mounting hole, to predetermined position after through fixed establishment latched position can, insulating short ladder this moment be with the pole syntropy and the certain distance of interval, the staff can climb the pole through insulating short ladder fast and carry out the station position operation. Compare with current climbers mode of climbing the pole, net live working personnel safety station position on the pole has effectively been solved to this device, reduces and skids, falls the pole, electrocutes the risk.
Drawings
Fig. 1 is a schematic structural view of a live-wire working pole climbing apparatus;
FIG. 2 is a schematic structural diagram of an insulating short ladder;
FIG. 3 is a bottom view of the mounting plate;
FIG. 4 is a top view of the mounting plate;
FIG. 5 is a schematic view of a side portion of the first hoop;
FIG. 6 is a partial top view of the first hoop;
FIG. 7 is a schematic view of a first hoop fastener;
FIG. 8 is a side view of the first hoop fastener;
FIG. 9 is a schematic view of a pulley;
FIG. 10 is a schematic view of the structure of an insulating barrier;
FIG. 11 is a schematic view of the telescopic rod;
description of reference numerals:
1 an embracing mechanism,
11 a first hoop and 12 a second hoop;
111 nylon wheel, 112 connecting plate, 113 chain, 114 locker, 115 screw rod, 116 lead screw;
2 support frame body
21 an upper frame plate, 22 a lower frame plate, 23 a connecting rod and 24 a fixing plate;
3, mounting a plate body;
31 mounting through holes, 32 pulleys and 33 mounting seats;
311 longitudinal holes, 312 strip holes;
4, insulating short ladders;
41 longitudinal rod, 42 transverse rod, 43 anti-falling sleeve and 44 anti-falling bolt;
5, a fixing mechanism;
a slot 51 and a plug-in board 52;
6, a telescopic insulating mechanism;
61 insulating baffle, 62 telescopic rod, 63 support.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Referring to fig. 1 to 11, the electric pole climbing apparatus capable of working with electricity of the present embodiment includes a clasping mechanism 1, a supporting frame 2, a mounting plate 3, an insulating short ladder 4 and a fixing mechanism 5. The clasping mechanism 1 is used for clasping the electric pole. The support frame body 2 is fixedly arranged on the clasping mechanism 1 and used for installing and installing parts such as a plate body 3, an insulating short ladder 4 and the like. The installation plate body 3 is at least two, sets firmly respectively in the not co-altitude position that supports support body 2, has the installation through-hole 31 of vertical setting on the installation plate body 3. The insulating short ladder 4 can movably penetrate through the mounting through hole 31. The fixing mechanism 5 is disposed on the mounting plate 3 and is used for fixing the insulating short ladder 4 on the mounting plate 3.
After adopting this device, when the pole operation is climbed to needs, earlier with the cohesion mechanism 1 cohesion on the pole, make support frame body 2 be the level setting, then upwards vertical lift up insulating short ladder 4, and insert insulating short ladder 4 gradually downwards in installation through-hole 31, to preset position after through 5 latched positions of fixed establishment can, insulating short ladder 4 is for with the pole syntropy and the certain distance of interval this moment, the staff can climb the pole through insulating short ladder 4 fast and carry out the position operation of standing. Compare with current climbers mode of climbing the pole, net live working personnel safety station position on the pole has effectively been solved to this device, reduces and skids, falls the pole, electrocutes the risk.
The device replaces a climber to serve as a middle insulation station of distribution network live working, and the safety performance of the station during working on a distribution network live working personnel pole is improved. Insulating short ladder 4 is fixed on the pole through colluding with cohesion mechanism 1 fast, and insulating plate is established to station ladder department, and other ladders establish insulating cloth and keep apart, guarantee operation personnel station safety and insulating properties on the pole. The insulating short ladder 4 gives the operating personnel stronger sense of security than the climbers, and can be fixed at any position of the pole needing hot-line work conveniently.
In order to ensure that the clasping mechanism 1 clasps the electric pole stably and reliably, the clasping mechanism 1 comprises a first hoop 11 and a second hoop 12, and the first hoop 11 and the second hoop 12 are used for clasping the electric pole at different height positions.
In order to realize the adjustment of hoop circumference position on the pole, first hoop 11 and second hoop 12 are the nylon wheel staple bolt, and nylon wheel 111 on the nylon wheel staple bolt can roll along the circumference of pole. When the hoop is required to be adjusted to the circumferential position on the electric pole, the hoop can be slightly loosened, and then the hoop is rotated.
In this embodiment, the nylon wheel staple bolt is 113 formula staple bolts structures of chain, including nylon wheel 111, connecting plate 112, chain 113 and locker 114, constitute the staple bolt structure by a plurality of nylon wheels 111 and a plurality of connecting plate 112, and install chain 113 at one end, lead screw 116 is installed to the tip of chain 113, locker 114 is installed to the other end, install rotatable nut on locker 114, wear to establish back to the nut with lead screw 116, through rotating the nut, can drive the removal of lead screw 116 on locker 114, thereby realize that the unclamping or locking of staple bolt structure are fixed. In order to avoid the circumferential rotation of the nylon wheel hoop along the electric pole during climbing, the screw hole is arranged on the connecting plate 112, the screw rod 115 is arranged in the screw hole in a penetrating mode and is abutted against the wall surface of the electric pole, and therefore the circumferential rotation of the nylon wheel hoop can be prevented.
In this device, support frame body 2 includes upper ledge board 21, lower ledge board 22 and connecting rod 23, and upper ledge board 21 installs the side at first staple bolt 11, and lower ledge board 22 installs the side at second staple bolt 12, and connecting rod 23 installs between upper ledge board 21 and lower ledge board 22, and two installation plate body 3 install respectively on upper ledge board 21 and lower ledge board 22. In this embodiment, the upper frame plate 21 and the lower frame plate 22 can be mounted on the nylon wheel hoop through a fixing plate 24. The fixed plate 24 is mounted on a rotating shaft of the nylon wheel 111-the nylon wheel 111, and the upper frame plate 21 and the lower frame plate 22 are detachably mounted on the fixed plate 24, respectively.
In this device, insulating short ladder 4 includes two vertical poles 41 and a plurality of horizontal pole 42, and two vertical poles 41 are relative interval to be set up, and a plurality of horizontal poles 42 interval sets up between two vertical poles 41. In this embodiment, the vertical rod 41 and the horizontal rod 42 are made of insulating materials, or the surfaces thereof are wrapped with insulating materials.
In order to conveniently install the insulating short ladder 4 and simultaneously enable the insulating short ladder 4 to move stably and reliably up and down, the installation through hole 31 comprises two longitudinal holes 311 and a strip-shaped hole 312, the two longitudinal holes 311 are respectively positioned at two sides of the strip-shaped hole 312, the longitudinal holes 311 are suitable for accommodating the longitudinal rods 41, the strip-shaped hole 312 is suitable for accommodating the transverse rod 42, and therefore the bottom of the insulating short ladder 4 can penetrate into the installation through hole 31. The diameter of the longitudinal hole 311 is larger than the width of the strip-shaped hole 312 in this embodiment to reduce the sloshing of the insulating short ladder 4 in the installation through hole 31.
In order to move and adjust the insulating short ladder 4 more conveniently and rapidly, rotatable pulleys 32 are arranged on two opposite sides in the longitudinal hole 311, and the pulleys 32 are provided with concave surfaces matched with the shape of the longitudinal rod 41. In this embodiment, an L-shaped mounting seat 33 is attached to the bottom surface of the mounting plate 3, and a pulley 32 is rotatably attached to the mounting seat 33.
In order to conveniently and rapidly fix the insulating short ladder 4, the fixing mechanism 5 comprises a slot 51 and an inserting plate 52, wherein the slot 51 is arranged on the mounting plate body 3 and is positioned above the strip-shaped hole 312; the insert plate 52 may be inserted into the slot 51 to serve as a support for the crossbar 42. When the position of the short insulating ladder 4 is adjusted, the inserting plate 52 can be inserted into the inserting groove 51 to prevent the cross bar 42 from moving downwards.
In order to prevent the longitudinal rod 41 from falling off the longitudinal hole 311 downwards, the top end of the longitudinal rod 41 is provided with the falling-off prevention sleeve 43, the size of the falling-off prevention sleeve 43 is larger than the diameter of the longitudinal hole 311, so that the longitudinal rod 41 is prevented from falling off the longitudinal hole 311 downwards, and the operation safety of the device can be improved to a certain extent.
In order to prevent the vertical rods 41 from being separated from the longitudinal hole 311 upwards, the lower part of the short insulating ladder 4 is provided with a separation preventing bolt 44, and the separation preventing bolt 44 is arranged on the two vertical rods 41 in a penetrating way to prevent the short insulating ladder 4 from being separated from the longitudinal hole 311 upwards. After the insulating short ladder 4 is placed into the mounting through hole 31 and fixed, the anti-drop bolt 44 can be mounted on the lower portion of the insulating short ladder 4, so that the longitudinal rod 41 can be prevented from being separated upwards from the longitudinal hole 311, and the operation safety of the device can be improved to a certain extent.
In order to avoid the wire and the pole contact in the operation process, reduce the risk of electric shock, this device still includes scalable insulating mechanism 6, this mechanism includes insulating baffle 61, telescopic link 62 and support 63, insulating baffle 61 is vertical to be set up between pole and insulating short ladder 4 to insulating baffle 61 passes through telescopic link 62 and is connected with support 63, support 63 swing joint is on the vertical pole 41 of insulating short ladder 4, the structure of support 63 is the same with the structure of installation plate body 3, and support 63 is fixed through aforementioned fixed establishment 5 equally. In this embodiment, the telescopic link 62 can be two body of rods alternately and constitute, and then can adjust the position of insulating baffle 61 apart from the pole, in operation process, can arrange the wire in between insulating short ladder 4 and insulating short ladder 4, avoid the electric shock risk that wire and pole contact caused.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A live working pole climbing device, wherein the device comprises:
the embracing mechanism (1) is used for embracing the electric pole;
the support frame body (2) is fixedly arranged on the clasping mechanism (1);
the mounting plates (3) are at least two and are respectively fixedly arranged at different height positions of the support frame body (2), and the mounting plates (3) are provided with vertically arranged mounting through holes (31);
the insulating short ladder (4) is movably arranged in the mounting through hole (31) in a penetrating way;
and the fixing mechanism (5) is arranged on the mounting plate body (3) and is used for fixing the insulating short ladder (4) on the mounting plate body (3).
2. The live working pole climbing device according to claim 1, wherein the clasping mechanism (1) comprises a first hoop (11) and a second hoop (12), the first hoop (11) and the second hoop (12) being adapted to clasp at different height positions of the pole.
3. The pole climbing device capable of live working according to claim 2, wherein the first hoop (11) and the second hoop (12) are both nylon wheel hoops, and the nylon wheels (111) on the nylon wheel hoops can roll along the circumferential direction of the pole.
4. The live working pole climbing device according to claim 2, wherein the support frame body (2) comprises:
the upper frame plate (21) is arranged on the side surface of the first hoop (11);
the lower frame plate (22) is arranged on the side surface of the second hoop (12);
a connecting rod (23) installed between the upper frame plate (21) and the lower frame plate (22);
wherein, two mounting plate bodies (3) are respectively mounted on the upper frame plate (21) and the lower frame plate (22).
5. The live working pole climbing device according to claim 1, wherein the insulating short ladder (4) comprises:
two longitudinal bars (41) arranged oppositely at intervals;
and the plurality of cross rods (42) are arranged between the two longitudinal rods (41) at intervals.
6. The live-working pole climbing device according to claim 5, wherein the mounting through hole (31) comprises two longitudinal holes (311) and a strip-shaped hole (312), the two longitudinal holes (311) are respectively located at two sides of the strip-shaped hole (312), the longitudinal holes (311) are adapted to accommodate the longitudinal bars (41), and the strip-shaped hole (312) is adapted to accommodate the cross bar (42).
7. The live working pole climbing device according to claim 6, wherein rotatable pulleys (32) are provided at opposite sides in the longitudinal hole (311), the pulleys (32) having concave surfaces matching the outer shape of the longitudinal bar (41).
8. The live-working pole climbing device according to claim 6, wherein the fixing mechanism (5) includes:
the slot (51) is arranged on the mounting plate body (3) and is positioned above the strip-shaped hole (312);
and the inserting plate (52) can be arranged in the inserting groove (51) in a penetrating way to be used as a support of the cross rod (42).
9. The live-working pole climbing device according to claim 6, wherein the top end of the longitudinal rod (41) is provided with a drop prevention sleeve (43), the size of the drop prevention sleeve (43) being larger than the diameter of the longitudinal hole (311) to prevent the longitudinal rod (41) from falling out of the longitudinal hole (311) downward.
10. The live working pole climbing device according to claim 6, wherein the lower portion of the short insulating ladder (4) is provided with an anti-drop bolt (44), and the anti-drop bolt (44) is inserted into the two vertical rods (41) to prevent the short insulating ladder (4) from being separated upwards out of the longitudinal hole (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747612.7A CN113445895A (en) | 2021-07-02 | 2021-07-02 | Electric pole climbing device capable of working in hot-line mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747612.7A CN113445895A (en) | 2021-07-02 | 2021-07-02 | Electric pole climbing device capable of working in hot-line mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113445895A true CN113445895A (en) | 2021-09-28 |
Family
ID=77814793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110747612.7A Pending CN113445895A (en) | 2021-07-02 | 2021-07-02 | Electric pole climbing device capable of working in hot-line mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113445895A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7326974A (en) * | 1973-09-12 | 1976-03-18 | Fibre Glass Australia Pty Ltd | Fibre glass ladder |
| CN2359445Y (en) * | 1999-04-01 | 2000-01-19 | 郑利平 | Insulation elevator |
| CN201363085Y (en) * | 2008-12-19 | 2009-12-16 | 江苏省电力公司无锡供电公司 | Rotary insulating ladder for construction of electric wire pole |
| CN101771248A (en) * | 2008-12-30 | 2010-07-07 | 上海市南电力工程有限公司 | Rotary insulating ladder for distribution line live working |
| CN202094536U (en) * | 2011-06-09 | 2011-12-28 | 上海市南电力工程有限公司 | Foldable rotary insulating platform |
| CN202338197U (en) * | 2011-12-12 | 2012-07-18 | 辽宁省电力有限公司锦州供电公司 | Elevating crawling ladder of electric pole |
| CN203632117U (en) * | 2013-12-31 | 2014-06-04 | 国网湖南省电力公司湘潭供电分公司 | A rotary type insulation lift |
| CN204728980U (en) * | 2015-05-19 | 2015-10-28 | 国家电网公司 | A kind of high-altitude maintenance insulating ladder |
| CN107035314A (en) * | 2017-06-15 | 2017-08-11 | 兴化市永盛电力器材有限公司 | A kind of damp proof insulation boxlike lift |
| CN206860079U (en) * | 2017-06-15 | 2018-01-09 | 兴化市永盛电力器材有限公司 | A kind of damp proof insulation herringbone lift |
| CN109812221A (en) * | 2018-12-29 | 2019-05-28 | 国家电网有限公司 | Electric power overhaul ladder |
| CN211502242U (en) * | 2019-10-31 | 2020-09-15 | 杭州上诠光纤通信设备有限公司 | Communication hoop |
-
2021
- 2021-07-02 CN CN202110747612.7A patent/CN113445895A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7326974A (en) * | 1973-09-12 | 1976-03-18 | Fibre Glass Australia Pty Ltd | Fibre glass ladder |
| CN2359445Y (en) * | 1999-04-01 | 2000-01-19 | 郑利平 | Insulation elevator |
| CN201363085Y (en) * | 2008-12-19 | 2009-12-16 | 江苏省电力公司无锡供电公司 | Rotary insulating ladder for construction of electric wire pole |
| CN101771248A (en) * | 2008-12-30 | 2010-07-07 | 上海市南电力工程有限公司 | Rotary insulating ladder for distribution line live working |
| CN202094536U (en) * | 2011-06-09 | 2011-12-28 | 上海市南电力工程有限公司 | Foldable rotary insulating platform |
| CN202338197U (en) * | 2011-12-12 | 2012-07-18 | 辽宁省电力有限公司锦州供电公司 | Elevating crawling ladder of electric pole |
| CN203632117U (en) * | 2013-12-31 | 2014-06-04 | 国网湖南省电力公司湘潭供电分公司 | A rotary type insulation lift |
| CN204728980U (en) * | 2015-05-19 | 2015-10-28 | 国家电网公司 | A kind of high-altitude maintenance insulating ladder |
| CN107035314A (en) * | 2017-06-15 | 2017-08-11 | 兴化市永盛电力器材有限公司 | A kind of damp proof insulation boxlike lift |
| CN206860079U (en) * | 2017-06-15 | 2018-01-09 | 兴化市永盛电力器材有限公司 | A kind of damp proof insulation herringbone lift |
| CN109812221A (en) * | 2018-12-29 | 2019-05-28 | 国家电网有限公司 | Electric power overhaul ladder |
| CN211502242U (en) * | 2019-10-31 | 2020-09-15 | 杭州上诠光纤通信设备有限公司 | Communication hoop |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210928 |
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| RJ01 | Rejection of invention patent application after publication |