CN203352053U - Chain-type ladder used for maintenance of straight line tower of power transmission line - Google Patents
Chain-type ladder used for maintenance of straight line tower of power transmission line Download PDFInfo
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- CN203352053U CN203352053U CN 201320389612 CN201320389612U CN203352053U CN 203352053 U CN203352053 U CN 203352053U CN 201320389612 CN201320389612 CN 201320389612 CN 201320389612 U CN201320389612 U CN 201320389612U CN 203352053 U CN203352053 U CN 203352053U
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Abstract
The utility model relates to the technical field of power transmission line maintenance auxiliary equipment in the electric power industry, specifically to a chain-type ladder used for the maintenance of a straight line tower of a power transmission line. During the maintenance process of the overhead power transmission line, work personnel usually employs a rope ladder to go from a cross arm of the tower down to a power transmission conductor to work. When being treaded, the rope ladder swings and twists, and causes troubles to the construction. Moreover, the rope ladder is relatively heavy in weight and large in size, and thus is not convenient to be carried up to the tower. The chain-type ladder comprises a ratchet-type tightener, a hanging ring, a chain, foot-rest rings, and a hanging hook. The foot-rest rings are connected in series through the chain. The top end of the chain is connected with the ratchet-type tightener through the hanging ring with a safety buckle. The tail end of the chain is equipped with the hanging hook. The chain-type ladder is simple and reasonable in structure and convenient to operate. When the chain-type ladder is used, the ratchet-type tightener and the hanging hook are respectively connected onto the cross arm of the tower and the power transmission conductor, and then the chain-type ladder is straightened by tightening the tightener, thereby being beneficial for operate personnel to tread stably. Therefore, the construction is benefited and the work efficiency is increased.
Description
Technical field
The utility model relates to power industry Maintenance of Electric Transmission Line auxiliary equipment technical field, specifically a kind of chain type ladder for the maintenance of transmission line straight line pole.
Background technology
At present, insulator string length in the configuration of 110-500kV overhead transmission line is 1.02～4.25m, insulator quantity is generally: does not wait 110kV-7 slice, 220kV-13 slice, 330kV-17 slice, 500kV-25 slice, along with difference of the improving constantly of insulation configuration, shaft tower landform of living in etc., insulator sheet number is also increasing, add the connection gold utensil, the distance to wire reaches 1.2～5.5 meters from the upper hanging point of cross arm of tower insulator to make the 110-500kV circuit.
In the outage maintenance process of overhead transmission line, the maintainer need to, from cross arm of tower to transmission pressure, carry out the wear condition of gold utensil, the inspections such as shortage of pin.Existingly for the maintainer, by tower bar cross-arm, down to the instrument of wire, be mainly rope ladder, have following shortcoming: 1, under the staff in the process of circuit, rope ladder often waves, stretches, the amount of deflection of generation is larger, easily damages insulator; 2, the rope ladder rope is more, and volume and weight is large (about 7kg), carries inconvenience during upper tower operation, easy and shaft tower and pin nail hooking; 3,, in the strong wind weather construction, after rope ladder all launches, front face area is larger, vacillate now to the left, now to the right, and the situation that often appearance can't be hooked wire, inefficiency; 4, rope ladder and shaft tower are fixing need to manually bundle, and randomness is larger, has personal safety hidden danger.
Summary of the invention
The purpose of this utility model is to provide a kind of chain type ladder for the maintenance of transmission line straight line pole, to overcome the deficiency of existing instrument, according to the structure of cross arm of tower and wire, designed, strengthened the fixture of this instrument and cross arm of tower, while having reduced on-line operation, ladder waves, alleviated weight of equipment, constructability personnel aerial operation, improved operating efficiency.
The technical solution of the utility model is: comprise the ratchet type wire stretching device, the line wheel be assemblied on the ratchet type wire stretching device coordinates with the ratchet stopping mechanism, on the line wheel, is wound with stay cord; Ratchet type wire stretching device top is fixed with location hook; Also comprise link, chain, pedal ring and hook with secure latch; Pedal ring is connected in series by chain; The chain on top is connected with link, and the stay cord of ratchet type wire stretching device is connected with link; The chain of end is connected with hook.
Further, described hook is enclosed with sheath.
The utility model has the advantages that: simple and reasonable, convenient operation, be applicable to the work such as maintenance that 110kV and above transmission line straight line pole carry out to wire from cross-arm, defect elimination.Under the prerequisite guaranteed the safety of construction, reduced to greatest extent the instrument weight and volume, be convenient to upper and lower shaft tower and carry; In staff's maintenance process, utilize wire grip that the chain type ladder is stretching, make it there is enough rigidity, reduce wave, distortion, the impact of the weather such as do not blown, be conducive to operating personnel trample, and guaranteed staff's personal safety.According to the insulator string length of different electric pressure circuits, can organize chain type ladder head and the tail more and connect use, meet the line construction requirement.
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is elaborated.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
In figure: 1, ratchet type wire stretching device, 2, link, 3, chain, 4, pedal ring, 5, hook, 6, location hook, 7, stay cord.
Embodiment 1
As can be seen from Figure 1, the utility model comprises ratchet type wire stretching device 1, and its top is fixed with location hook 6; The wired wheel is installed on ratchet type wire stretching device 1, and the line wheel coordinates with the ratchet stopping mechanism, on the line wheel, is wound with stay cord 7; The utility model also comprises link 2, chain 3, pedal ring 4 and links up with 5; Pedal ring 4 is connected in series by chain 3, every two pedal ring spacing 450mm; The chain 3 on top is connected with link 2, and the stay cord 7 of ratchet type wire stretching device 1 is connected with link 2, and link 2 is with secure latch, prevents that accident from deviating from; The chain 3 of end is connected with hook 5, and linking up with 5 opening size is 120mm, is convenient to the staff and operates easily and efficiently the chain type ladder articulate wire on cross-arm; Hook 5 is enclosed with plastic jacket, and damage wires in the time of can effectively avoiding articulating wire plays the effect of pre-antistatic simultaneously; Stay cord 7 is used the steel wire rope that length is Φ 5 for 800mm, diameter.
Ratchet type wire stretching device 1, pedal ring 4 in the utility model, link up with 5 and all adopt aluminum alloy material, chain 3 adopts the titanium alloy materials to make, and reduces overall weight, and with the example that is set to of 220kv circuit, overall weight is only 2.2kg.
Use concrete operations of the present utility model as follows:
(1), the staff is positioned on the cross-arm of tower bar, and the chain type ladder is hung down, the hook 5 of ladder end is hooked on the transmission pressure of cross-arm below, then ratchet type wire stretching device 1 is fastened on the angle steel of cross-arm by location hook 6;
(2), pull the handle of ratchet type wire stretching device 1, tighten up stay cord 7, whole piece chain type ladder is stretching and tighten, and makes it have enough rigidity, reduces the impact that weather brings, and reduces ladder and waves, the amount of deflection now produced is minimum, is conducive to operating personnel and scrunches stable;
(3), the maintainer scrunches pedal ring 4 along carry out upkeep operation under ladder to working point.
After having worked, loosen ratchet type wire stretching device 1, take off the chain type ladder.
Finally should be noted that: above embodiment is for illustrating that the technical solution of the utility model is not intended to limit; the those skilled in the art modifies to execution mode or the part technical characterictic is equal to replacement; and do not break away from the essence of technical solutions of the utility model, within all should being encompassed in the utility model scope required for protection.
Claims (2)
1. the chain type ladder for the maintenance of transmission line straight line pole, comprise ratchet type wire stretching device (1), and the line wheel be assemblied on ratchet type wire stretching device (1) coordinates with the ratchet stopping mechanism, on the line wheel, is wound with stay cord (7); Ratchet type wire stretching device (1) top is fixed with location hook (6); It is characterized in that: also comprise link (2), chain (3), pedal ring (4) and hook (5) with secure latch; Pedal ring (4) is connected in series by chain (3); The chain on top (3) is connected with link (2), and the stay cord (7) of ratchet type wire stretching device (1) is connected with link (2); The chain of end (3) is connected with hook (5).
2. according to the described a kind of chain type ladder for the maintenance of transmission line straight line pole of claim 1, it is characterized in that: described hook (5) is enclosed with sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320389612 CN203352053U (en) | 2013-07-02 | 2013-07-02 | Chain-type ladder used for maintenance of straight line tower of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320389612 CN203352053U (en) | 2013-07-02 | 2013-07-02 | Chain-type ladder used for maintenance of straight line tower of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203352053U true CN203352053U (en) | 2013-12-18 |
Family
ID=49751904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320389612 Expired - Lifetime CN203352053U (en) | 2013-07-02 | 2013-07-02 | Chain-type ladder used for maintenance of straight line tower of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203352053U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005698A (en) * | 2014-05-14 | 2014-08-27 | 国家电网公司 | Special ladder for construction on steel bar arm |
| CN105089487A (en) * | 2015-09-07 | 2015-11-25 | 国网山东省电力公司烟台供电公司 | Special portable power transmission line routing inspection rope ladder capable of being operated by single person |
| CN105625936A (en) * | 2016-03-21 | 2016-06-01 | 国网甘肃省电力公司经济技术研究院 | Portable climbing device |
| CN106522824A (en) * | 2016-12-28 | 2017-03-22 | 国网浙江省电力公司湖州供电公司 | Soft ladder locking hook for 110kV electric transmission line |
-
2013
- 2013-07-02 CN CN 201320389612 patent/CN203352053U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005698A (en) * | 2014-05-14 | 2014-08-27 | 国家电网公司 | Special ladder for construction on steel bar arm |
| CN105089487A (en) * | 2015-09-07 | 2015-11-25 | 国网山东省电力公司烟台供电公司 | Special portable power transmission line routing inspection rope ladder capable of being operated by single person |
| CN105625936A (en) * | 2016-03-21 | 2016-06-01 | 国网甘肃省电力公司经济技术研究院 | Portable climbing device |
| CN106522824A (en) * | 2016-12-28 | 2017-03-22 | 国网浙江省电力公司湖州供电公司 | Soft ladder locking hook for 110kV electric transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |
|
| CX01 | Expiry of patent term |