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Method for checking height difference between joints of cross arms for cross arms of dual-column pole tower

An inspection method and joint technology, applied in height/level measurement, measuring devices, instruments, etc., can solve the problems of prone to errors, height difference mixed with height difference, etc., and achieve the effect of fast placement, light weight and low price

Active Publication Date: 2015-06-24
ELECTRIC POWER OF HENAN LUOYANG POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] For the above situations, if you don’t know it in advance and don’t correct it, then it’s easy to make mistakes by using theodolite to check the height difference. Height difference due to incorrect method

Method used

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  • Method for checking height difference between joints of cross arms for cross arms of dual-column pole tower
  • Method for checking height difference between joints of cross arms for cross arms of dual-column pole tower
  • Method for checking height difference between joints of cross arms for cross arms of dual-column pole tower

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Embodiment Construction

[0025] Such as figure 1 , 2 , shown in 3, a kind of method for checking the height difference of the cross-arm of a double-column pole-tower at the joint of the cross-arm is to draw a leveling mark on the double-column pole-tower in advance after the double-column poles have been welded. The instrument used in the present invention is Leveling instrument 3, leveling instrument 3 includes: theodolite, level, leveling water pipe, etc. After the assembly is completed, select the inspection method according to the actual situation on site and the tools, including:

[0026] 1) Check with theodolite

[0027] After the pole tower is welded, use a steel tape measure to measure a distance L from the lower section of the shaft at the cross-arm connection. Draw a leveling mark P point at this place. The height of the point P of the operation level mark from the ground is about 1.6 meters. Support the theodolite on the center line of the line 1 meter before and after the two poles A c...

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Abstract

The invention relates to the technical field of measurement and checking of power transmission lines and discloses a method for checking the height difference between joints of cross arms for the cross arms of a dual-column pole tower, in particular to the checking method which draws a leveling mark on the dual-column pole tower in advance after completing the welding of the dual-column pole tower and checks according to field actual situation and tool selection after the assembly is completed, and the method comprises the following steps: 1) using a theodolite to check; 2) using a level gauge to check; 3) using a leveling water pipe to check; and 4) using the method without the leveling mark. By adopting the method, the problems in the measurement and the checking can be effectively solved, and the problem that the height difference between the joints of the cross arms for the cross arms of the dual-column pole tower can only be measured and checked by using the theodolite or a total station and other instruments with the function of measuring the elevation angle can be solved. The instrument adopted in the method is a leveling instrument, a leveling telescope is not required, the arrangement speed is fast, the price is cheap and the weight is light.

Description

【Technical field】 [0001] The invention relates to the technical field of measurement and inspection of power transmission lines, in particular to a method for inspecting the height difference between cross-arms of double-column poles and towers at cross-arm connections. 【Background technique】 [0002] At present, the following methods are generally used when checking the height difference of the cross-arm of the double-column pole tower at the junction of the cross-arm: figure 1 As shown, place the theodolite on the center line of the line at a distance of more than 2 times the height of the double pole, so that the intersection point of the crosshairs of the telescope is aligned with point A at the junction of the poles. Then turn the aiming part, so that the telescope turns to look at the connection between the other pole and the cross-arm. figure 1 For point B shown, if the intersection point of the crosshairs coincides with point B, then points A and B are on the same h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C5/00G01B5/02
Inventor 李岩刘治稳郭向阳霍建伟彭钢
Owner ELECTRIC POWER OF HENAN LUOYANG POWER SUPPLY
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