CN2675839Y

CN2675839Y - Safety protection device for crank arm of transmission pole and tower

Info

Publication number: CN2675839Y
Application number: CN 200420030176
Authority: CN
Inventors: 薛岩; 姚敬军; 徐瑞华; 田杰民
Original assignee: LIANGJIN POWER BUREAU NORTHEAST POWER ADMINISTRATION
Current assignee: LIANGJIN POWER BUREAU NORTHEAST POWER ADMINISTRATION
Priority date: 2004-01-15
Filing date: 2004-01-15
Publication date: 2005-02-02
Anticipated expiration: 2014-01-15

Abstract

The utility model relates to a safety protection device for crank arm of transmission pole and tower, which solves the problem of the lack of the safety protection facility of the existing transmission pole and tower. A ladder composed of a supporting post and cross arms is arranged at the crank arm of the pole and tower. The utility model is characterized in that the supporting post is positioned on the crank arm of the pole and tower through a beam to fix the ladder and the transmission pole and tower together. The utility model has the advantages of reasonable structure, easy installation and the reliable performance, which is economical and practical. The ladder is arranged at the most dangerous part of the pole and tower so that when the workers utilize the ladder to climb the upper and the lower crank arm of the pole and tower, the feet can step on the cross arms of the ladder and the hands can firmly hold the tower and the arm rest to climb; therefore, the climb is easy and safe. Moreover, the utility model greatly improves the safety of the overhead climbing operation, effectively stopping the occurrence of the falling accident and coinciding with the national standard in safety property.

Description

The safety device that electric power line pole tower is cranked arm and located

Technical field

The utility model relates to the safety device that a kind of electric power line pole tower is cranked arm and located.

Background technology

" safety first, put prevention first " is the policy of electric power enterprise safety in production, prevents that personal injury from then being the most important thing of trouble free service.The millions of kilometers of the existing ultra-high-tension power transmission line of China are for national economy and social development are providing irreplaceable very strong driving force.In order to guarantee these transmission line of electricity safe and reliable operations, ten hundreds of trackman's rod-rising tower work high above the ground is all arranged every day, transmission line of electricity is carried out various repair and maintenance work.Yet, since the trackman in climbing the process of shaft tower without any safety precautions, the high-altitude falling accident still happens occasionally, and becomes one of maximum personal injury of power industry occurrence frequency.According to statistics, in the period of in 1990 to 1, only the northeast electrical network is just because of high-altitude dead 34 people that fall, severely injured 33 people.So, prevent that the high-altitude falling accident from being the most important thing of transmission line operation trouble free service, because this type of accident to be in case to take place just must be personal major casualties, will bring irretrievable loss to power supply enterprise and operating personnel and family members thereof.Though power supply enterprise has strengthened safety management and safety monitor, reduced the generation of transmission line operation high and medium falling accident to a certain extent.But the trackman almost is being engaged in work high above the ground every day on ultra-high-tension power transmission line; and without any the safeguard protection facility, especially in the operation of shaft tower up and down, the safeguard protection equipment that the trackman carries is not easy to again use on the shaft tower; therefore, the easiest generation high-altitude falling accident.The shaft tower that particularly has the tower window, as wineglass tower and cat head tower, the accident rate during climbing is the highest.Therefore the security reliability of wineglass tower and cat head tower operation, is widely used in the transmission line of electricity of 220kv and the above electric pressure of 220kv than higher, becomes the key tower in the transmission line of electricity in recent years.The tower head shape of wineglass tower and cat head tower exactly likes wineglass and cat head, and cranking arm of two symmetries all arranged at its top, and this is cranked arm and is made of upper and lower cranking arm, and upper and lower angled the linking together of cranking arm.Because existing electric power line pole tower all adopts the pin pin structure, therefore, the operating personnel climb the wineglass tower or and cat head tower upper and lower when cranking arm the place, certainly will cause operating personnel's body inclination angle excessive, be close to unsettled precarious position, and, in climbing, the human body upper body and the lower part of the body and waist are 90 ° of twisted states, and the operating personnel very easily accidentally drops and causes the high-altitude falling accident, so cranking arm is to climb the most dangerous place of shaft tower.Some young workers even can produce the feared state of mind once climbing here, especially at the bigger weather of wind-force, this sensation is just more strong, and the danger of corresponding existence is also bigger.According to statistics, send among the electrician people newly assigned, the time that has nearly 1/3 personnel to climb to have the shaft tower of cranking arm lags behind the time about half a year than other towers, somebody person even still dare not climb this shaft tower after taking up one's indentures.Therefore, guaranteeing operating personnel's personal safety on technical safeguard, fundamentally stop the generation of high-altitude falling accident, is the vast electrician of sending people's an urgent demand and hope, also is the important topic of pendulum in face of electric power enterprise.

Summary of the invention

The technical problems to be solved in the utility model is, overcoming existing electric power line pole tower does not have the problem of security protection facility, the safety device that provides a kind of electric power line pole tower rational in infrastructure, economical and practical, dependable performance to crank arm the place, conscientiously the generation of prevention high-altitude falling accident, the workman's that guarantees to transmit electricity personal safety.

The utility model has one to be installed in the cat ladder that shaft tower is cranked arm and located, and described cat ladder is made of supporting upright post and stepping cross support, and its special character is that supporting upright post is installed on the cranking arm of shaft tower by crossbeam, and cat ladder and electric power line pole tower are fixed together.

The crank arm angle of bend of outer rim of described cat ladder and shaft tower is identical, is connected so that crank arm with shaft tower.

Also has a guard rail that constitutes by connecting rod and handrail in the outside of cat ladder, with the workman's that guarantees to transmit electricity personal safety.

Advantage of the present utility model is, rational in infrastructure, economical and practical, easy for installation, dependable performance, with 500KVZB3, ZB5, ZB6 type wineglass tower is an example, corresponding cat ladder cost only is 2800 yuan, 3600 yuan and 4080 yuan, compare with whole wineglass tower, only account for 4.03% of its cost, but for last tower operating personnel provides the life security guarantee, this cat ladder is arranged on climbs the most dangerous place of shaft tower, the operating personnel utilize this cat ladder climb shaft tower on, during lower bent lever, just can ride the stepping cross support of cat ladder, both hands are held up the upwards climbing of steady tower material and handrail, not only free and relaxed, the more important thing is the sense of security, and, the margin of safety of high-altitude climbing operation improved greatly, really play the security protection effect, effectively stopped the generation of high-altitude falling accident; In addition, cat ladder of the present utility model is convenient to on-the-spot the installation, and its installation both can be carried out under the circuit power down mode, also can carry out under live state; In addition, the mechanical strength of the utility model cat ladder, mechanical load and the air gap circle all satisfy the design discipline requirement, and its security performance meets state-set standard fully.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the A of Fig. 1 is to view;

Fig. 3 is the position view of the utility model when installing on the wineglass tower.

The specific embodiment

As shown in drawings, the utility model has one to be installed in the cat ladder that shaft tower is cranked arm and located, and described cat ladder only has one, be arranged on two in shaft tower in cranking arm cranks arm, be positioned at the outer rim of the side of cranking arm, and identical, be connected so that crank arm with shaft tower with the crank arm angle of bend of outer rim of shaft tower; Described cat ladder is made of supporting upright post 4 and stepping cross support 5, supporting upright post 4 has two groups, every group of supporting upright post 4 has two, be fixed together with connector 3 between two groups of supporting upright posts 4, described stepping cross support 5 has some, equidistantly to be welded between two supporting upright posts 4, constitute complete cat ladder; Described supporting upright post 4 is installed on the cranking arm of shaft tower by crossbeam 6, and cat ladder and shaft tower are fixed together; Also has a guard rail that constitutes by connecting rod 2 and handrail 1 in the outside of cat ladder, with the workman's that guarantees to transmit electricity personal safety.

The utility model is equally applicable to except that wineglass tower and cat head tower other and has the shaft tower of cranking arm, and has when using on the shaft tower of cranking arm at other, only needs that the scantling in the utility model is done corresponding the adjustment and get final product.

Claims

1, a kind of electric power line pole tower crank arm the place safety device, it has one to be installed in the cat ladder that shaft tower is cranked arm and located, described cat ladder is made of supporting upright post and stepping cross support, it is characterized in that, supporting upright post is installed on the cranking arm of shaft tower by crossbeam, and cat ladder and electric power line pole tower are fixed together.

2, the electric power line pole tower according to claim 1 safety device at place of cranking arm is characterized in that, the crank arm angle of bend of outer rim of cat ladder and shaft tower is identical.

3, electric power line pole tower according to claim 1 crank arm the place safety device, it is characterized in that also having a guard rail that constitutes by connecting rod and handrail in the outside of cat ladder.