Theodolite leveling steps, how to adjust the right angle of the theodolite

Angle bracket - press the instrument - align the base point - leveling - check the base point - rotary inspection - complete.

The method of making an angle of 90 degrees with an electronic theodolite:

Illuminate the electronic theodolite in one direction, lock the brake, first set the angle to zero, then release the brake, then turn about 90 degrees, lock the brake, and fine-tune to 90 degrees.

Electronic theodolite is a theodolite that uses photoelectric technology to measure angles, has angle digital display and automatic data calculation and storage devices, and can be widely used in countries and cities.

The third and fourth triangulation control surveys are used for engineering surveys in railways, highways, bridges, water conservancy, mines, etc., and can also be used for the installation of buildings and large equipment, and are used in cadastral surveys, topographic surveys and a variety of engineering surveys.

The role of electronic theodolite.

When measuring, the theodolite is placed on a tripod, the center of the instrument is aligned with the ground measuring station with a vertical ball or optical pointer, the instrument is leveled with a level, the telescope is aimed at the measurement target, and the horizontal angle and vertical angle are measured with a horizontal dial and a vertical dial.

According to the accuracy, it is divided into precision theodolite and ordinary theodolite; According to the reading equipment, it can be divided into optical theodolite and vernier theodolite; According to the shaft structure, it is divided into a double theodolite and a direction theodolite.

In addition, there are coded dial theodolite that automatically records dial readings by coded perforation; automatic tracking theodolite with continuous automatic aiming at air targets; The gyro-theodolite and laser theodolite are used to quickly and independently determine the orientation of the ground point by using the principle of gyro-orientation.

It is an all-round theodolite for astronomical observation with three functions: theodolite, meridian and zenith; Combining a camera with a theodolite for photographic theodolite for terrestrial photogrammetry, etc.

Illuminate the theodolite in one direction, lock the brake, first set the angle to zero, then release the brake, then turn about 90 degrees, lock the brake, and fine-tune to 90 degrees.

Alignment is to place the center of the theodolite dial on the plumb line of the measuring station. The method steps are as follows: a theodolite is placed on the measuring station, the visual estimation is roughly centered, and the eyepiece of the optical aligner is rotated to make the reticle clear; Pull out or advance the objective tube of the centerer to make the markers of the test site clear.

Hold one leg in each hand and swing the eye centerer to find the target, so that the image of the station sign is accurately located in the center of the small circle of the reticle.

Theodolite introduction:

Theodolite is a kind of measuring instrument designed according to the principle of angle measurement to measure horizontal angles and vertical angles, which is divided into two types: optical theodolite and electronic theodolite, the most commonly used is electronic theodolite.

The theodolite is the mechanical part of the telescope that enables the telescope to point in different directions. The theodolite has two perpendicular shafts to adjust the azimuth and horizontal height of the telescope.

After leveling, align the straight line point, lock, there is now a straight line after locking, and then set zero (horizontal degrees), and adjust the degree after zero to 90 or 270 degrees is a right angle.

Say the following about the use of theodolite:

1. If it is commonly referred to as zero, the electronic theodolite can press the zero button after aiming at the target, and the optical theodolite can use the dial to configure the handwheel to achieve zero.

2 If it is said to be zeroing in the observation method, you can do this: when observing on the left side of the disk, observe the points to be measured clockwise from the starting direction, and observe the starting direction again after observing the points to be measured, so that the half-measurement return to zero is completed, and the right side of the disk is the same as above.

The observation requirements of each level of zeroing difference are different, please refer to the "Engineering Survey Code" for details.

After powering on, press and hold the left and right buttons for 3 seconds, then release it, the laser will light up, and the lower alignment is to press and hold the lighting button for 3 seconds.

The original Chinese name of laser is "laser", "laise", which is the transliteration of its English name laser, which is an abbreviation taken from the first letter of each word in English light amplification by stimulated emission of radiation. It means "amplified by stimulated radiated light".

How can I level the theodolite quickly? Hello dear! Theodolite leveling method:

1. Place the tripod on the measuring station first, so that the tripod head is roughly horizontal, and the center of the tripod head is roughly aligned with the center of the measuring station; Fix the instrument on the tripod, move the two feet of the tripod to close the spring, so that the center of the ground station sign and the center of the centering device roughly coincide; 2. Centering the circular level bubble forest through the lifting tripod, loosening the instrument connecting screws, moving the instrument, making the center of the ground station sign and the center of the centering device accurately coincide, and tightening the connecting screws; 3. Accurately level the instrument with the leg spiral: first parallel the long horizontal tube to the two foot spirals, and adjust the two foot spirals to center the blister; Then make the long horizontal tube perpendicular to the line direction of the two foot spirals, and adjust the third foot spiral to make the bubble centered; 4. The above centering and leveling process may be repeated until the accurate centering, and the rotation alignment part is in all directions, the bubble of the long horizontal tube is centered, and there is no (1) and (2) steps when the instrument is placed on the forced centering observation pier. The placement method of the theodolite:

1. The tripod is adjusted to the same length and suitable for the height of the operator, and the instrument is fixed on the tripod, so that the base surface of the instrument is parallel to the top surface of the tripod; 2. Place the instrument dance on the measuring station, after the visual estimation is roughly centered, step on a stable foot, adjust the eyepiece of the optical centering device (see the cross wire clearly) and the objective lens (see the measuring station clearly), use each hand to lift a leg to swing back and forth, left and right, and look at the centering device to make the intersection of the cross wire coincide with the measuring station, stabilize and step on the solid foot; 3. Telescopic tripod leg length leveling round level; 4. Parallel two leveling spirals of the leveling pipe, and leveling the leveling pipe; 5. Rotate the quasi-part at 90 degrees, and level the horizontal tube with the third spiral; 6. Check the optical alignment, if there is a small amount of deviation, you can open the connecting spiral translation base to make it accurately aligned, tighten the connecting spiral, and then check the centering of the horizontal bubble. Hope it helps!

Placement instrument: the tripod is at a moderate height, so that the measuring point is in the field of view; After the device is erected, the connecting spiral is tightened.

Forced alignment: hold the two feet of the tripod in your hand so that the center of the optical aligner coincides with the measuring point;

Rough leveling: use the telescopic part of the tripod leg to adjust the length of the tripod leg so that the instrument is basically level (the bubble of the circular level is basically centered);

Precise leveling: adjust the foot spiral to center the long horizontal bubble;

Precise alignment: move the base, precise alignment (can only move back and forth, left and right, not rotate);

Repeat, two steps, until the end of the spring such as full centering, leveling.

1. The tripod is adjusted to the same length and suitable for the height of the operator, and the instrument is fixed on the tripod, so that the base surface of the instrument is parallel to the top surface of the tripod;

2) Place the instrument dance on the measuring station, after the visual estimation is roughly centered, step on a shelf foot, adjust the optical centering device eyepiece (see the cross wire clearly) and the objective lens (see the measurement station clearly), use each hand to lift a frame foot back and forth, left and right, and look at the alignment model fool to make the intersection of the cross wire coincide with the measuring station, stabilize and step on the solid foot.

3) Telescopic tripod leg length leveling round level hall yard header.

4. Parallel two leveling spirals of the leveling pipe, and leveling the leveling pipe;

5. Rotate the quasi-part at 90 degrees, and level the horizontal tube with the third spiral;

6) Check the optical alignment, if there is a small amount of deviation, you can open the connecting spiral translation base to make it accurately centered, tighten the connecting spiral, and then check the center of the level bubble.

<>1. The tripod is adjusted to the same length and suitable for the height of the operator, and the instrument is fixed on the tripod, so that the base surface of the instrument is parallel to the top surface of the three-legged round fighting frame.

2. Place the instrument dance on the measuring station, after the visual estimation is roughly centered, step on a stable foot, adjust the eyepiece of the optical centering device (see the cross wire clearly) and the objective lens (see the measuring station clearly), use each hand to lift a leg to swing back and forth, left and right, and look at the centering device to make the intersection of the cross wire coincide with the measuring station, stabilize and step on the solid foot;

3. Telescopic tripod leg length leveling round level;

4. Parallel two leveling spirals of the leveling pipe, and leveling the leveling pipe;

The purpose of leveling is to adjust the bubble of the level tube to make the vertical axis of the instrument in the plumb position. Rough leveling can be placed when the theodolite is moved, so that the round level bubble is centered; Precise leveling is to rotate the foot spiral according to Xiaoxiang's left technique, so that the bubble of the level cavity of the illumination department is centered.