Method for observing and adjusting line through gear side sag with 90-degree horizontal angle
A horizontal angle and sag technology, which is applied in the direction of measuring devices, overhead lines/cable equipment, instruments, etc., can solve the problems of cumbersome operation of hanging point distance and inability to observe, etc., and achieve the effect of improving construction efficiency
Active Publication Date: 2020-03-24
HENAN POWER TRANSMISSION & TRANSFORMATION CONSTR CO LTD +1
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[0002] During the sag observation process of transmission line erection, the commonly used sag observation methods include the end observation method, the outside observation method, the inside observation method, and the side observation method. Due to the high UHV tower, the end observation method is used , the outside of the gear, and the inside of the gear can not be observed. When using the side of the gear to observe, every time the sag is measured, the distance of the hanging point l should be measured at least once m or l n , the maximum sag is calculated by the distance of the hanging point, and the measurement of the distance of the hanging point needs to be measured by the prism-free mode of the total station, and the operation of measuring the horizontal hanging point distance by the prism-free mode of the total station is cumbersome
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0024] Such as figure 1 As shown, the present invention includes:
[0025] Step 1: Set the total station observation point as O, the top of the first UHV iron tower as H, the top of the second UHV iron tower as Q, the first UHV iron tower, the second UHV iron tower and the horizontal plane where point O is located The intersection points are H', Q', H'Q' is l and l is known, let ∠OH'Q' be θ f , θ f =90°, let ∠H′OQ′ be θ a , Measure θ with a total station a , let tanθ b =tanθ a / 2;
[0026] Step 2: Turn the horizontal angle of the total station to align with HH' ...
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The invention provides a method for observing and adjusting a line through a gear side sag with a 90-degree horizontal angle. The invention is used for providing the method for observing adopting special positions so that measurement distance is reduced and construction efficiency is improved. The method comprises the steps that on the basis of existing gear side observation, adopting a special position so that the horizontal angle is made to be 90 degrees, then calculating the maximum sag f by solving a triangle in an established triangle so that distance measurement is reduced, and construction efficiency is improved. Under the condition that a line is not erected yet, a set sag is known and meets the requirement that the set sag is equal to the maximum sag f, and an erected line is loosened continuously in the erecting process through calculation to meet the requirement.
Description
technical field [0001] The invention belongs to the technical field of sag observation, and in particular relates to a method for adjusting wires through sag observation at a gear side with a horizontal angle of 90 degrees. Background technique [0002] During the sag observation process of transmission line erection, the commonly used sag observation methods include the end observation method, the outside observation method, the inside observation method, and the side observation method. Due to the high UHV tower, the end observation method is used , the outside of the gear, and the inside of the gear can not be observed. When using the side of the gear to observe, every time the sag is measured, the distance of the hanging point l should be measured at least once m or l n , Calculate the maximum sag by the distance of the hanging point, and measure the distance of the hanging point by using the prism-free mode of the total station to measure, and the operation of measurin...
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Login to View More IPC IPC(8): G01B11/06H02G1/02
CPCG01B11/0608H02G1/02
Inventor 曹翀杨作强李君章齐林孙建兴肖贵成王家彪朱兆伟卢凯
Owner HENAN POWER TRANSMISSION & TRANSFORMATION CONSTR CO LTD