CN109403854A - Transmission line of electricity tightens enclosed type rope ladder - Google Patents
Transmission line of electricity tightens enclosed type rope ladder Download PDFInfo
- Publication number
- CN109403854A CN109403854A CN201811568916.1A CN201811568916A CN109403854A CN 109403854 A CN109403854 A CN 109403854A CN 201811568916 A CN201811568916 A CN 201811568916A CN 109403854 A CN109403854 A CN 109403854A
- Authority
- CN
- China
- Prior art keywords
- rope ladder
- fixed frame
- mounting portion
- straight line
- transmission line
- 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
- E06C1/52—Ladders in general with non-rigid longitudinal members
- E06C1/56—Rope or chain ladders
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The present invention relates to transmission lines of electricity to tighten enclosed type rope ladder, including rope ladder ontology and fixed frame, fixed frame includes the first mounting portion and the second mounting portion, rope ladder ontology is mounted on fixed frame by the first mounting portion, for the fixed frame through the second mounting portion installation locking on the cross-arm of transmission line of electricity, the first mounting portion further includes fixed limiting section；Advantages of the present invention: rope ladder ontology is mounted on fixed frame by the first mounting portion, then rope ladder ontology is mounted on the cross-arm of transmission line of electricity with fixed frame, when use, axial shaking of the rope ladder ontology on the first mounting portion is prevented due to the fixation limiting section on the first mounting portion, so rope ladder ontology is only by downward pulling force, ensure that the levelness of foot pedal, be conducive to operator's climbing, improve security performance when operation, and fixed frame is connected with cross-arm, the contact area with cross-arm is increased, the stability of rope ladder ontology is further improved.
Description
Technical field
The present invention relates to transmission lines of electricity to tighten enclosed type rope ladder.
Background technique
Currently, rope ladder is people in order to travel to and fro between the climbing work that difference has two places of certain altitude and uses
Tool, for existing rope ladder during transmission line of electricity is repaired, rope ladder is to be directly anchored on the cross-arm of transmission line of electricity, and rope ladder is caused to be easy
It shakes, and the foot pedal on rope ladder is incline structure, when people are when climbing rope ladder in the related technology, the rolling that still can be controlled
It is dynamic, so people are difficult to make balance, danger are waited to make a misstep.
Summary of the invention
The technical problem to be solved in the present invention is to provide transmission line of electricity tightening enclosed type rope ladder, it is direct to solve existing rope ladder
Installation leads to the crank-sided technical problem of rope ladder pedal in climbing on the transmission line.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions: transmission line of electricity tightening locking
Formula rope ladder, including rope ladder ontology and fixed frame, the fixed frame include the first mounting portion and the second mounting portion, the rope ladder ontology
It is mounted on fixed frame by the first mounting portion, the fixed frame passes through the second mounting portion installation locking in the cross-arm of transmission line of electricity
On, the rope ladder ontology is mounted on the cross-arm of transmission line of electricity with the fixed frame, and first mounting portion further includes for preventing
The only fixation limiting section that rope ladder ontology axially shakes on the first mounting portion.
Preferably, first mounting portion is the mounting plate being arranged on fixed frame, and the fixed limiting section is that setting exists
Spacing block set on mounting plate, the mounting plate and spacing block set are integrally formed；Second mounting portion includes the first movable part
With the second movable part, first movable part is movably connected on the vertical direction of fixed frame, and the second movable part activity connects
It connects in the horizontal direction of fixed frame.
Preferably, first movable part includes screw rod and nut, and the fixed frame is equipped with through-hole, and the one of the screw rod
End is connected across through-hole with nut, and the other end of the screw rod is equipped with the grab being connected with cross-arm；Second movable part includes
Sliding block and the screw being arranged on sliding block, the fixed frame are equipped with sliding slot, and the sliding block is slidably connected at fixation by screw
On frame, the screw is equipped with briquetting by slider locking on fixed frame, and the sliding block is equipped with closing piece, the closing piece and solid
Determine to form the locked groove being connected with cross-arm between frame.
Preferably, the fixed frame is equipped with guiding swivel nut compatible with screw rod.
Preferably, one end of the screw rod is additionally provided with the baffle for preventing nut from falling off, and the upper of nut is arranged in the baffle
Side.
Preferably, the mounting plate is an integral structure with fixed frame.
Preferably, the rope ladder ontology includes the first messenger, the second messenger and foot pedal, and the foot pedal is arranged first
Between messenger and the second messenger, and it is vertical with the first messenger and the second messenger, it is all provided on first messenger and the second messenger
There is the fixing sleeve being connected with the first mounting portion.
Preferably, lock is additionally provided on the mounting plate, one end of the lock is flexibly connected on a mounting board, the lock
The other end snapping of button is on a mounting board, described to latch and surround the locking slot being connected with fixing sleeve between mounting plate.
Preferably, the lock includes first straight line section, second straight line section and arc section, and the arc section is arranged first
Between straightway and second straight line section, the first straight line section is flexibly connected on a mounting board, and the second straight line section snaps onto
On mounting plate, and first straight line section, second straight line section and arc section are an integral structure.
Preferably, the mounting plate is equipped with fixed column, and the fixed column is equipped with connecting hole, in the second straight line section
Equipped with the connecting column matched with connecting hole, the first straight line section is equipped with spring, and one end and the mounting plate of the spring connect
Touching, the first straight line section are equipped with the gasket being in contact with the other end of spring.
In conclusion advantages of the present invention: 1. are mounted on rope ladder ontology on fixed frame by the first mounting portion, then soft
Terraced ontology is mounted on the cross-arm of transmission line of electricity with fixed frame, in use, being prevented due to the fixation limiting section on the first mounting portion
Only axial shaking of the rope ladder ontology on the first mounting portion, so rope ladder ontology is ensured that and stepped on only by downward pulling force
The levelness of sole is conducive to operator's climbing, improves security performance when operation, and fixed frame is connected with cross-arm, increases
The big contact area with cross-arm, further improves the stability of rope ladder ontology；
2. the first mounting portion is arranged to mounting plate, be conducive to the Fast Installation of rope ladder ontology, and fixed limited block setting
At spacing block set, by the way that the installation of rope ladder ontology on a mounting board, can be prevented rope ladder ontology on a mounting board by spacing block set
Shaking, and when installing, rope ladder ontology be installed on a mounting board after can only passing through positive stop lug boss from direction, can improve rope ladder
The fixed mass of ontology installation, and positive stop lug boss and mounting plate are arranged to integrally formed structure, can improve entire mounting plate
Intensity, can prevent installation is falling off for positive stop lug boss, improves the installation quality of rope ladder ontology, and the second mounting portion is arranged to solid
Determine the first movable part being flexibly connected on frame and the second movable part, adapt to the cross-arm of different model, practical performance is good；
3. the first movable part is arranged to the screw rod with grab, the second movable part is arranged to the sliding block with closing piece, peace
When dress, realizes that fixed frame is fixed on cross-arm by the grab on the locked groove and screw rod between closing piece and fixed frame, can ensure that
It is whole steady on cross-arm to further ensure fixed frame for the fixed mass of first movable part and the second movable part on cross-arm
Property；
4. being oriented to the setting of swivel nut, screw rod movable straightness on fixed frame can ensure that, and can increase screw rod and fixation
The contact area of frame is avoided that shaking of the screw rod on fixed frame；
5. the setting of baffle can prevent nut from falling off from screw rod, the fixed mass of the first movable part is improved；
6. by mounting plate and the integrated structure of fixed mount setting, whole intensity can be improved, also simplify mounting plate with
Mounting process between fixed frame prevents the junction of mounting plate and fixed frame from crack occur, improves operating personnel's climbing
In security performance；
7. rope ladder ontology is arranged to the first messenger, the second messenger and foot pedal, the structure of entire rope ladder ontology can be optimized,
Be conducive to whole carrying, and realized by fixing sleeve and be connected with the first mounting portion, can quickly realize that rope ladder ontology is mounted on
On first mounting portion, and it is able to achieve the fast quick-detach of rope ladder ontology, and fixing sleeve can increase rope ladder ontology and the first mounting portion
Contact area, it is ensured that fixed quality is further reduced the shaking of rope ladder ontology；
8. the setting of lock is locked fixing sleeve on a mounting board by the locking slot formed between lock and mounting plate,
Fixing sleeve can further be improved in the fixed mass of mounting plate；
9. lock is arranged to first straight line section, second straight line section and arc section, locking slot is made to be arc-shaped setting, can increased
The contact area of big lock and fixing sleeve, it is ensured that shaking of the fixing sleeve on the second mounting portion, first straight line section, second straight line section
It is arranged to integral structure with arc section, the whole intensity of lock can be improved, simplify first straight line section, second straight line section and circular arc
The mutual mounting process of section, improves the service life of lock；
10. passing through the cooperation of connecting column and connecting hole, second straight line section can be enable quickly to realize that installation is torn open with mounting plate
It unloads, and connects reliably, be avoided that the separation of second straight line section and mounting plate, the setting of spring can not only reduce fixing sleeve to lock
The active force of button, and it is good from pulling force to have lock, it is ensured that and the stability of rope ladder ontology improves operating personnel and climbed
The security performance of journey.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that transmission line of electricity of the present invention tightens enclosed type rope ladder；
Fig. 2 is the structural schematic diagram of fixed frame of the present invention；
Fig. 3 is the partial enlarged view of I in Fig. 1.
Appended drawing reference:
1 rope ladder ontology, 11 first messengers, 12 second messengers, 13 foot pedals, 14 fixing sleeves, 2 fixed frames, 21 through-holes, 22 are slided
Slot, 23 guiding swivel nuts, 3 first mounting portions, 30 locks, 31 locking slots, 32 first straight line sections, 33 second straight line sections, 34 arc sections,
35 fixed columns, 36 connecting holes, 37 connecting columns, 38 springs, 39 gaskets, 4 second mounting portions, 5 fixed limiting sections, 6 first movable parts,
61 screw rods, 62 nuts, 63 grabs, 64 baffles, 7 second movable parts, 71 sliding blocks, 72 screws, 73 briquettings, 74 closing pieces, 75 locked grooves, 8
Cross-arm.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, transmission line of electricity tightens enclosed type rope ladder, including rope ladder ontology 1 and fixed frame 2, described
Fixed frame 2 includes the first mounting portion 3 and the second mounting portion 4, and the rope ladder ontology 1 is mounted on fixed frame 2 by the first mounting portion 3
On, the fixed frame 2 is through 4 installation locking of the second mounting portion on the cross-arm 8 of transmission line of electricity, and the rope ladder ontology 1 is with described
Fixed frame 2 is mounted on the cross-arm 8 of transmission line of electricity, and first mounting portion 3 further includes for preventing rope ladder ontology 1 in the first peace
Rope ladder ontology 1 is mounted on fixed frame 2 by the fixation limiting section 5 axially shaken in dress portion 3 by the first mounting portion 3, then soft
Terraced ontology 1 is mounted on the cross-arm 8 of transmission line of electricity with fixed frame 2, in use, due to the fixation limiting section 5 on the first mounting portion 3
Prevent axial on the first mounting portion 3 of rope ladder ontology 1 from shaking, so rope ladder ontology 1 is only by downward pulling force, thus really
The levelness for having protected foot pedal 13 is conducive to operator's climbing, improves security performance when operation, and fixed frame 2 and cross
Load 8 is connected, and increases the contact area with cross-arm 8, further improves the stability of rope ladder ontology 1.
First mounting portion 3 is the mounting plate being arranged on fixed frame 2, and the fixed limiting section 5 is that setting is being installed
Spacing block set on plate, the mounting plate and spacing block set are integrally formed；Second mounting portion 4 includes 6 He of the first movable part
Second movable part 7, first movable part 6 are movably connected on the vertical direction of fixed frame 2,7 activity of the second movable part
It is connected in the horizontal direction of fixed frame 2, the first mounting portion 3 is arranged to mounting plate, is conducive to the quick peace of rope ladder ontology 1
Dress, and fixed limited block is arranged to spacing block set, by the way that the installation of rope ladder ontology on a mounting board, can be prevented by spacing block set
The shaking of rope ladder ontology on a mounting board, and when installation, rope ladder ontology 1 be mounted on after can only passing through positive stop lug boss from a direction
On mounting plate, the fixed mass of the installation of rope ladder ontology 1 can be improved, and positive stop lug boss and mounting plate are arranged to integrally formed knot
Structure can improve the intensity of entire mounting plate, and can prevent installation is falling off for positive stop lug boss, improve the installation quality of rope ladder ontology 1,
Second mounting portion 4 is arranged to the first movable part 6 being flexibly connected on fixed frame 2 and the second movable part 7, adapts to different shaped
Number cross-arm 8, practical performance is good.
First movable part 6 includes screw rod 61 and nut 62, and the fixed frame 2 is equipped with through-hole 21, the screw rod 61
One end pass through through-hole 21 and be connected with nut 62, the other end of the screw rod 61 is equipped with the grab 63 being connected with cross-arm 8；Described
Two movable parts 7 include sliding block 71 and the screw 72 being arranged on sliding block 71, and the fixed frame 2 is equipped with sliding slot 22, the sliding block
71 are slidably connected on fixed frame 2 by screw 72, and the screw 72 is equipped with the briquetting being locked at sliding block 71 on fixed frame 2
73, the sliding block 71 is equipped with closing piece 74, and the locked groove 75 being connected with cross-arm 8 is formed between the closing piece 74 and fixed frame 2；Installation
When, realize that fixed frame 2 is fixed on cross-arm 8 by the grab 63 on the locked groove 75 and screw rod 61 between closing piece 74 and fixed frame 2
On, it can ensure that the fixed mass of the first movable part 6 and the second movable part 7 on cross-arm 8, it is whole to further ensure fixed frame 2
Stationarity on cross-arm 8.
The fixed frame 2 is equipped with guiding swivel nut 23 compatible with screw rod 61, can ensure that screw rod 61 is living on fixed frame 2
Dynamic straightness, and can increase the contact area of screw rod 61 Yu fixed frame 2, it is avoided that shaking of the screw rod 61 on fixed frame 2, institute
The one end for stating screw rod 61 is additionally provided with the baffle 64 for preventing nut 62 from falling off, and the top of nut 62 is arranged in the baffle 64, can prevent
Only nut 62 falls off from screw rod 61, improves the fixed mass of the first movable part 6, and the mounting plate and fixed frame 2 are integral type
Structure can improve whole intensity, also simplify the mounting process between mounting plate and fixed frame 2, prevent mounting plate and fixation
There is crack in the junction of frame 2, improves the security performance in operating personnel's climbing.
The rope ladder ontology 1 includes the first messenger 11, the second messenger 12 and foot pedal 13, and the foot pedal 13 setting is the
Between one messenger 11 and the second messenger 12, and, first messenger 11 and vertical with the first messenger 11 and the second messenger 12
It is equipped with the fixing sleeve 14 being connected with the first mounting portion 3 on two messengers 12, the structure of entire rope ladder ontology 1 can be optimized, be conducive to
Whole carrying, and being connected by the realization of fixing sleeve 14 with the first mounting portion 3 can quickly realize that rope ladder ontology 1 is mounted on the
On one mounting portion 3, and it is able to achieve the fast quick-detach of rope ladder ontology 1, and fixing sleeve 14 can increase rope ladder ontology 1 and the first mounting portion
3 contact area, it is ensured that fixed quality is further reduced the shaking of rope ladder ontology 1, lock is additionally provided on the mounting plate
30, it is described lock 30 one end be flexibly connected on a mounting board, it is described lock 30 other end snapping on a mounting board, the lock
The locking slot matched with fixing sleeve 14 31 is surrounded between button 30 and mounting plate, by being formed between lock 30 and mounting plate
Locking slot 31 by fixing sleeve 14 lock on a mounting board, can further improve fixing sleeve 14 in the fixed mass of mounting plate.
The lock 30 includes first straight line section 32, second straight line section 33 and arc section 34, and the first straight line section 32 is living
On a mounting board, on a mounting board, the arc section 34 is arranged in first straight line section 33 snapping of second straight line section for dynamic connection
Between 32 and second straight line section 33, lock 30 is arranged to first straight line section 32, second straight line section 33 and arc section 34, makes to lock
Slot 31 is arc-shaped setting, can increase the contact area of lock 30 with fixing sleeve 14, it is ensured that fixing sleeve 14 is on the second mounting portion 4
Shaking, first straight line section 32, second straight line section 33 and arc section 34 be arranged to integral structure, and it is whole to improve lock 30
Intensity simplifies first straight line section 32, second straight line section 33 and the mutual mounting process of arc section 34, improves making for lock 30
With the service life, the mounting plate is equipped with fixed column 35, and the fixed column 35 is equipped with connecting hole 36, in the second straight line section 33
Equipped with the connecting column 37 matched with connecting hole 36, the first straight line section 32 is equipped with spring 38, one end of the spring 38
It is contacted with mounting plate, the first straight line section 32 is equipped with the gasket 39 being in contact with the other end of spring 38, passes through connecting column
37, with the cooperation of connecting hole 36, can enable second straight line section 33 and mounting plate quickly realize installing and dismounting, and connect reliable, energy
The separation of second straight line section 33 and mounting plate is avoided, the setting of spring 38 can not only reduce the effect of 14 pairs of fixing sleeve locks 30
Power, and it is good from pulling force to have lock 30, it is ensured that and the stability of rope ladder ontology 1 improves operating personnel's climbing
Security performance.
In addition to above preferred embodiment, there are other embodiments of the invention, and those skilled in the art can be according to this
Invention makes various changes and modifications, and as long as it does not depart from the spirit of the invention, should belong to appended claims of the present invention and determines
The range of justice.
Claims (10)
1. transmission line of electricity tightens enclosed type rope ladder, including rope ladder ontology, it is characterised in that: it further include fixed frame, the fixed frame
Including the first mounting portion and the second mounting portion, the rope ladder ontology is mounted on fixed frame by the first mounting portion, the fixation
For frame through the second mounting portion installation locking on the cross-arm of transmission line of electricity, the rope ladder ontology is mounted on transmission of electricity with the fixed frame
On the cross-arm of route, first mounting portion further includes the fixation for preventing rope ladder ontology from axially shaking on the first mounting portion
Limiting section.
2. transmission line of electricity according to claim 1 tightens enclosed type rope ladder, it is characterised in that: first mounting portion is to set
The mounting plate on fixed frame is set, the fixed limiting section is the spacing block set of setting on a mounting board, the mounting plate and limit
Position convex block is integrally formed；
Second mounting portion includes the first movable part and the second movable part, and first movable part is movably connected in fixed frame
On vertical direction, second movable part is movably connected in the horizontal direction of fixed frame.
3. transmission line of electricity according to claim 2 tightens enclosed type rope ladder, it is characterised in that: first movable part includes
Screw rod and nut, the fixed frame are equipped with through-hole, and one end of the screw rod passes through through-hole and is connected with nut, the screw rod it is another
One end is equipped with the grab being connected with cross-arm；
Second movable part includes sliding block and the screw that is arranged on sliding block, and the fixed frame is equipped with sliding slot, the sliding block
It is slidably connected on fixed frame by screw, the screw is equipped with the briquetting by slider locking on fixed frame, the sliding block
It is equipped with closing piece, forms the locked groove being connected with cross-arm between the closing piece and fixed frame.
4. transmission line of electricity according to claim 3 tightens enclosed type rope ladder, it is characterised in that: the fixed frame be equipped with
The compatible guiding swivel nut of screw rod.
5. transmission line of electricity according to claim 3 tightens enclosed type rope ladder, it is characterised in that: be additionally provided on the screw rod anti-
The top of nut is arranged in the only baffle that nut falls off, the baffle.
6. transmission line of electricity according to claim 2 tightens enclosed type rope ladder, it is characterised in that: the mounting plate and fixed frame
It is an integral structure.
7. transmission line of electricity according to claim 1 tightens enclosed type rope ladder, it is characterised in that: the rope ladder ontology includes the
One messenger, the second messenger and foot pedal, the foot pedal are arranged between the first messenger and the second messenger, and with the first messenger and
Second messenger is vertical, is equipped with the fixing sleeve being connected with the first mounting portion on first messenger and the second messenger.
8. transmission line of electricity according to claim 7 tightens enclosed type rope ladder, it is characterised in that: be additionally provided on the mounting plate
Lock, one end of the lock are flexibly connected on a mounting board, the other end snapping of the lock on a mounting board, the lock
The locking slot being connected with fixing sleeve is surrounded between mounting plate.
9. transmission line of electricity according to claim 8 tightens enclosed type rope ladder, it is characterised in that: the lock includes first straight
Line segment, second straight line section and arc section, the arc section are arranged between first straight line section and second straight line section, and described first is straight
Line segment be flexibly connected on a mounting board, the second straight line section snapping on a mounting board, and first straight line section, second straight line section and
Arc section is an integral structure.
10. transmission line of electricity according to claim 9 tightens enclosed type rope ladder, it is characterised in that: the mounting plate is equipped with
Fixed column, the fixed column are equipped with connecting hole, and the second straight line section is equipped with the connecting column matched with connecting hole, described
First straight line section is equipped with spring, and one end of the spring is contacted with mounting plate, and the first straight line section is equipped with and spring
The gasket that the other end is in contact.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811043976 | 2018-09-07 | ||
| CN2018110439761 | 2018-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109403854A true CN109403854A (en) | 2019-03-01 |
Family
ID=65460379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811568916.1A Pending CN109403854A (en) | 2018-09-07 | 2018-12-21 | Transmission line of electricity tightens enclosed type rope ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109403854A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817552A (en) * | 2012-09-10 | 2012-12-12 | 辽宁省电力有限公司鞍山供电公司 | Direct-current 500kV circuit lower composite insulator flexible ladder |
| CN202810313U (en) * | 2012-07-30 | 2013-03-20 | 青海鹏盛电力器材有限公司 | Mounting structure of mistaken-climbing-preventive support base on iron tower angle iron |
| JP2014077238A (en) * | 2012-10-09 | 2014-05-01 | Masatake Akashi | Escape ladder for high-rise building |
| CN204012427U (en) * | 2014-06-13 | 2014-12-10 | 国家电网公司 | Insulated ladder level is adjustable hanger |
| CN107575156A (en) * | 2017-10-19 | 2018-01-12 | 国网江苏省电力公司南京供电公司 | A kind of rope ladder being used for into the straight line pole wire scope of operation |
| CN209483200U (en) * | 2018-09-07 | 2019-10-11 | 国网浙江慈溪市供电有限公司 | A kind of transmission line of electricity tightening enclosed type rope ladder |
-
2018
- 2018-12-21 CN CN201811568916.1A patent/CN109403854A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202810313U (en) * | 2012-07-30 | 2013-03-20 | 青海鹏盛电力器材有限公司 | Mounting structure of mistaken-climbing-preventive support base on iron tower angle iron |
| CN102817552A (en) * | 2012-09-10 | 2012-12-12 | 辽宁省电力有限公司鞍山供电公司 | Direct-current 500kV circuit lower composite insulator flexible ladder |
| JP2014077238A (en) * | 2012-10-09 | 2014-05-01 | Masatake Akashi | Escape ladder for high-rise building |
| CN204012427U (en) * | 2014-06-13 | 2014-12-10 | 国家电网公司 | Insulated ladder level is adjustable hanger |
| CN107575156A (en) * | 2017-10-19 | 2018-01-12 | 国网江苏省电力公司南京供电公司 | A kind of rope ladder being used for into the straight line pole wire scope of operation |
| CN209483200U (en) * | 2018-09-07 | 2019-10-11 | 国网浙江慈溪市供电有限公司 | A kind of transmission line of electricity tightening enclosed type rope ladder |
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