CN103322875A - Spirit level for power transmission line n-shaped rod construction - Google Patents

Abstract

The invention discloses a level for the construction of a gate pole of a power transmission line, which comprises a span measuring ruler used for measuring the horizontal distance between two pole pits of the gate pole, and two depth measuring rulers respectively installed at the ends of the span measuring ruler. A measuring ruler, the span measuring ruler includes a ruler cover, a retractable ruler core sleeved in the ruler cover, a scale is set on the outer surface of the ruler core, and a level is installed on the outer surface of the ruler cover; The depth measuring ruler comprises a lower ruler and a retractable upper ruler sleeved in the lower ruler, and a scale is arranged on the outer surface of the upper ruler. The invention is easy to use, can directly measure the horizontal distance between the two pole pits and the vertical distance between the bottom surfaces of the two pole pits, and provides guiding parameters for the construction of gate poles, which saves a lot of calculation process and greatly improves the It not only improves the construction efficiency, but also has the advantages of small error, easy handling and storage.

Description

A level used for the construction of transmission line portal poles

technical field

The invention relates to a construction tool for electric facilities, in particular to a level used for adjusting the position and depth of two pole pits when embedding gate poles.

Background technique

The portal pole is a common pole type in power transmission lines, generally including two upright tower poles, and horizontal fork beams or cross arms are installed on the upper parts of the two tower poles. Due to its high rigidity and strength, the door rod is mostly used in occasions where the load is relatively large. During the construction of the portal pole, according to the construction specifications, the two upright tower poles must be installed on the same horizontal base, and the depth of the two tower poles buried in the ground and the horizontal distance between the two tower poles are all within the design. It is within the size range to ensure that the stress of the two rods meets the design requirements. Therefore, two pole pits for burying tower poles must be dug before construction, and it must be ensured that the bottom surfaces of the two pole pits are on the same level. Therefore, during actual construction, it is necessary to measure and calculate with a theodolite or a spirit level while digging, so as to ensure that the depth of the two rod pits is within the allowable range of the design, and ensure that the bottom surfaces of the two rod pits are on the same level. This construction method has the following disadvantages: 1) For each measurement, the two pole pits require construction personnel to go to the pit to find the measurement point or reading, which requires a lot of labor, and the light at the bottom of the pit is dark, and the reading error is also large; 2) When the ground is rough or sloped, the horizontal distance between pole pits cannot be obtained by direct measurement. The inclination angle of the ground must be measured first, and then calculated; 3) Repeated measurement, repeated excavation or filling is required during the construction process. Back, multiple adjustments can make the bottom of the two pole pits coincide with the design and construction surface, and after each measurement, professionals need to perform complex calculations, which is a large amount of calculation and low construction efficiency; 4) due to the comparison of the dimensions to be measured Large, direct measurement tools are generally bulky, difficult to carry and store, and there is error accumulation when using small-sized measurement tools for indirect measurement, so the error is relatively large.

Contents of the invention

The technical problem to be solved in the present invention is to provide a construction level for transmission line gate bars to solve the problems of heavy labor, large errors, low labor efficiency and inconvenient handling during construction by traditional methods.

In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

The spirit level used for the construction of the portal pole of the transmission line includes a span measuring ruler for measuring the horizontal distance between two pole pits of the gate pole, and two depth measuring rulers respectively installed at the ends of the span measuring ruler; The span measuring ruler includes a ruler cover, a retractable ruler core sleeved in the ruler cover, a scale is arranged on the outer surface of the ruler core, and a level is installed on the outer surface of the ruler cover; the depth measuring ruler includes a lower Ruler, a retractable upper ruler sleeved in the lower ruler, the outer surface of the upper ruler is provided with a scale, the upper end of one of the two upper rulers is connected with the ruler sleeve, and the upper end of the other upper ruler is connected with the ruler core connection; the upper ruler and the span measuring ruler are hinged and fixed, and a pair of installation ears parallel to each other extending along the length direction of the span measuring ruler are respectively set at the positions where the span measuring ruler and the upper ruler are connected; ruler pin.

A further improvement of the present invention is that: a base is provided on the outer surface of the ruler sleeve, and the level is mounted on the base through screws.

The improvement of the upper ruler is that the upper ruler is made of a plurality of scaled ruler sections which are socketed layer by layer.

The improvement of the core is that the core is made of a plurality of scaled scale segments which are socketed layer by layer.

Owing to adopting above-mentioned technical scheme, the technological progress that the present invention obtains is as follows.

The present invention can directly measure the horizontal distance between two pole pits by setting a retractable span measuring ruler and installing a spirit level on the span measuring ruler, even on a ground with a certain slope, it can be conveniently measured, The calculation process is omitted, and the labor efficiency is improved. The invention can directly measure the difference between the depths of the two pole pits by installing a retractable depth measuring ruler at both ends of the span measuring ruler, thereby providing guiding data for the next step of excavation, eliminating the need for repeated excavation or filling The adjustment process can greatly improve labor efficiency. Moreover, in the present invention, the scaled upper ruler is located on the top of the depth measuring ruler, without reading at the bottom of the pit, which ensures the reading accuracy and improves the working quality. The depth measuring ruler of the present invention is hinged at both ends of the span measuring ruler. During work, due to gravity, the depth measuring ruler will naturally be in a vertical state, which is convenient for measurement.

The spirit level of the present invention is detachably installed on the base of the span measuring ruler. After the work is finished, the level can be removed and stored to avoid damage to the precision instrument and affect the next measurement; both the span measuring ruler and the depth measuring ruler of the present invention can be used as The multi-section ruler is socketed layer by layer, so that the present invention has a wider scope of application.

Description of drawings

Fig. 1: the schematic diagram of the three-dimensional structure of an embodiment of the present invention;

Fig. 2: A schematic structural view of another embodiment of the present invention.

Among them: 1. Span measuring ruler, 11. Ruler core, 12. Ruler cover, 13. Spirit level, 14. Base, 15. Mounting ear, 2. Depth measuring ruler, 21. Upper ruler, 22. Lower ruler.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Embodiment one:

A level used for the construction of a transmission line portal pole, as shown in Figure 1, includes a span measuring ruler 1 and two depth measuring rulers 2, the span measuring ruler 1 is used to measure the horizontal distance between two pole pits, and the two depth measuring rulers Depth measuring ruler 2 is installed on the two ends of span measuring ruler 1 respectively, and is used for measuring the depth of two pole pits.

The span measuring ruler 1 includes a ruler sheath 12 and a retractable ruler core 11 sleeved in the ruler sheath. In the present embodiment, the chi core 11 and the chi cover 12 are all made of square steel pipes, the cross-sectional dimension of the inner wall of the chi core is 100mm × 150mm, the cross-sectional dimension of the outer wall is 106mm × 156mm, and the length of the chi core is 2.1m. The cross-sectional dimension of the inner wall of the cover 12 is 107mm×157mm, the cross-sectional dimension of the outer wall is 113mm×163mm, and the length of the ruler sleeve is 3.1m. Scales along the length direction are arranged on the upper surface of the core. A base 14 is arranged on the upper surface of the ruler cover 12, and a level 13 is mounted on the base 14 by screws.

There is a limit block on the outer surface of the end of the side where the ruler core is socketed with the ruler sleeve, and a retaining ring is provided at the end of the side where the ruler sleeve is connected with the ruler core, so as to prevent the ruler core from completely falling out of the ruler sleeve. Pull out, causing the two to separate.

Depth measuring ruler 2 is a kind of stretchable ruler that is formed by socketing of thinner upper ruler 21 and thicker lower ruler 22, upper ruler 21 and lower ruler 22 are all made of square steel pipes, upper ruler The section dimension of the inner wall of 21 is 28mm * 58mm, and the outer wall dimension is 34mm * 64mm, and the length of upper chi 21 is 1m. The inner wall size of the lower ruler 22 is 35mm × 65mm, the outer wall size is 39mm × 69mm, and the length of the lower ruler is 2m. The outer surface of the end of the side where the upper ruler 21 and the lower ruler 22 are socketed is provided with a limit block, and the end of the corresponding side of the lower ruler is provided with a retaining ring, so as to prevent the upper ruler from being completely pulled out from the lower ruler. Cause the upper ruler and the lower ruler to separate. The outer surface of the upper ruler 21 is provided with a scale arranged along the length direction, and the zero scale line of the scale of the upper ruler is arranged at the end of the side socketed with the lower ruler.

The upper rulers 21 of the two depth measuring rulers 2 are respectively hinged with the two ends of the span measuring ruler 1 . A pair of mounting ears 15 are respectively provided on the lower surfaces of the two ends of the span measuring ruler 1, and the mounting ears 15 are parallel to the length direction of the span measuring ruler. Each pair of mounting ears is provided with a group of through holes, and a pin shaft for hinged upper ruler is arranged in the through holes.

The horizontal distance between the central axis of the through hole of the mounting ear at one end of the core and the end of the core is 0.1m, and the zero scale line of the surface scale of the core is set directly above the central axis of the through hole of the mounting ear at one end of the core . The horizontal distance between the central axis of the through hole of the mounting ear at one end of the ruler sheath and the end of the ruler sheath is 0.1m.

This embodiment is suitable for the construction of portal poles with a distance between two tower poles of 3m-5m and an embedded depth within the range of 2m-3m.

During use, first the level 13 is installed on the base 14 on the surface of the ruler cover 12, and fastened with screws. Then measure the horizontal distance between the two rod holes. When the bubble of the spirit level 13 was in the central position of the spirit level, the spirit level was in a horizontal state, and the depth measuring rulers at both ends of the span measurement value were in a vertical state due to their own gravity. At this time, adjust the length of the chi core 11 inserted into the chi cover 12 until the two depth measuring feet 2 are respectively located at the centers of the two pole pits. The length is the horizontal distance between the two rod holes.

Then excavate the pole pit. When the depth of the two pole pits is close to the design depth, use two depth measuring rulers to measure the depth difference between the two pole pits. The specific steps are a) Let the depth measuring ruler hang down vertically until it is supported by the lower ruler to the bottom of the pit; b) read the readings of the upper scales of the two depth measuring rulers; c) compare the two readings, if the two readings are inconsistent, it means that the bottoms of the two rod pits are not on the same level, The depth of the rod pit with the larger reading is shallower; d) Continue to excavate the shallower rod pit, and the excavation depth is the difference between the two readings, or fill the deeper rod pit , the depth of burial is the difference between the two readings. Can guarantee like this that the bottom surface of two pole pits is on the same level.

Finally, the installation of the base and the installation and fixing of the gate rod can be carried out on the bottom surface of the rod pit.

After use, put away the depth measuring ruler and the span measuring ruler, the upper ruler of the depth measuring ruler retracts into the lower ruler, the core of the span measuring ruler retracts into the ruler sleeve, and the depth measuring ruler can be folded away , for easy storage; the level 13 can be removed from the base 14 to avoid damage to precision instruments.

Embodiment two:

A level ruler for the construction of a power transmission line gate bar, as shown in Figure 2, the difference from Embodiment 1 is that in this embodiment, the chi core 11 and the upper chi 21 are both covered by two scaled chi sections. Connect the telescopic ruler that forms, and the length of ruler cover 12 changes 2.6m into.

The two sections of the chi core 11 are all made of square steel pipes, wherein the thinner section is sleeved into the thicker section to form a scalable structure. The length of the thinner section of the chi core is 1.6m, and the cross-sectional size of the inner wall It is 93mm×143mm, the cross-sectional dimension of the outer wall is 99mm×149mm; the length of the core of the thicker section is 2m, the cross-sectional dimension of the inner wall is 100mm×150mm, and the cross-sectional dimension of the outer wall is 106mm×156mm. Scales along the length direction are provided on the upper surfaces of the two cores 11 .

The two sections of the upper ruler 21 are made of square steel pipes. The thinner section is 0.7m long, the cross-sectional size of the inner wall is 23mm×43mm, and the cross-sectional size of the outer wall is 29mm×59mm; the thicker section is 1m long. The cross-section size of the inner wall is 28mm×58mm, and the outer wall size is 34mm×64mm; the outer surfaces of the upper rulers 21 of the two sections are provided with scales arranged along the length direction.

This embodiment is suitable for the construction of portal poles with a distance between two tower poles of 2.5m to 6m and an embedded depth within the range of 2m to 3.7m.

For the construction of portal poles with larger or smaller distances between the tower poles, it can be realized by changing the size of the ruler core and the ruler sleeve or changing the ruler core into a multi-layer, layer-by-layer socket; for deeper buried depth or The construction of a shallower door-shaped bar can be realized by changing the size of the upper ruler and the lower ruler or changing the upper ruler into a multi-layer, layer-by-layer socket.

Claims (4)

1. the working surveyor's staff of transmission line of electricity H-frame pole is characterized in that: comprise for the span dip stick (1) of horizontal range between two bar holes measuring H-frame pole, the depth measuring ruler (2) of two ends that are installed in respectively span dip stick (1); Described span dip stick (1) comprises chi cover (12), is socketed in the telescopic chi core (11) in the chi cover, on the outside surface of described chi core (11) scale is set, and level meter (13) is installed on the outside surface of described chi cover (12); Described depth measuring ruler (2) comprises lower chi (22), is socketed in the telescopic upper chi (21) in the lower chi, be provided with scale on the outside surface of described upper chi (21), the upper end of chi (21) is connected with the chi cover on one of them of chi on two (21), and upper end of chi is connected with the chi core on another; Described upper chi (21) is hinged fixing with span dip stick (1), and the position that span dip stick (1) is connected with upper chi (21) arranges respectively the mounting ear (15) that a pair of chi length direction along span dip stick (1) parallel to each other extends; The bearing pin of hinged upper chi is set between two mounting ears.

2. the working surveyor's staff of transmission line of electricity H-frame pole according to claim 1, it is characterized in that: the outside surface of described chi cover (12) is provided with pedestal (14), and level meter (13) is installed on the pedestal (14) by screw.

3. the working surveyor's staff of transmission line of electricity H-frame pole according to claim 1 and 2, it is characterized in that: described upper chi (21) successively is socketed by a plurality of chi sections with scale and makes.

4. the working surveyor's staff of transmission line of electricity H-frame pole according to claim 1 and 2, it is characterized in that: described chi core (11) successively is socketed by a plurality of chi sections with scale and makes.

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