CN116659553A - Axis Centerline Calibration Method - Google Patents

Abstract

The present invention relates to the technical field of civil engineering and equipment installation, in particular to a method for calibrating the centerline of an axis. The calibration tool includes a line pendant and two support frames, and two height adjustment rods are arranged on each support frame. The two height adjustment rods of a support frame are connected through a connecting rod, the connecting rod is threadedly connected with an adjusting sleeve, a connecting line is arranged between the two adjusting sleeves, and a line pendant is arranged in the middle of the connecting line; the two supporting frames are moved to To measure the position of the axis, adjust the height of the connecting rod to the specified position; use the total station to measure the two coordinate points of the horizontal line and mark them on the adjusting sleeve; bind the two ends of the connecting line on the adjusting sleeve, and hang the line in the middle of the connecting line; Use the total station to calibrate the marked coordinate points again. After the calibration coordinate points are qualified, the line drop position is the axis position. The invention greatly shortens the calibration time of the axis centerline, reduces the labor consumed in the calibration process of the axis centerline, and improves the calibration accuracy at the same time.

Description

Axis Centerline Calibration Method

technical field

The invention relates to the technical field of civil engineering and equipment installation, in particular to an axis centerline calibration method.

Background technique

In the process of concrete structure engineering and equipment installation and construction, the calibration of the centerline of the axis has always been a time-consuming and laborious construction process. After the coordinates of the axis, the position of the axis is marked by manual spring line. However, this method of marking the axis is easily affected by the construction personnel’s operation techniques and work experience. Coordinate offsets or inaccurate positioning often occur, resulting in large errors in the axis position and affecting When the subsequent installation workers install the equipment, they need to re-locate the axis, which affects the construction progress.

Contents of the invention

An embodiment of the present invention provides a method for calibrating the centerline of the axis, which aims to solve the problems of slow calibration of the centerline of the axis and low construction accuracy in traditional construction, which affect the construction progress.

The present invention adopts following technical scheme:

A method for calibrating the centerline of an axis, which is carried out in accordance with the following steps:

S1. Make the axis centerline calibration tool. The calibration tool includes a line pendant and two support frames. The bottom of the support frame is respectively equipped with universal wheels; each support frame is respectively provided with two height adjustment rods. The same support frame The two height adjustment rods are connected by a connecting rod with a scale. The outside of the connecting rod is provided with an external thread structure, and the external thread of the connecting rod is connected with an adjusting sleeve. A connecting line is arranged between the two adjusting sleeves. There is a thread pendant in the middle;

S2. Move the two support frames as a whole to the position of the axis to be measured, determine the horizontal distance between the two support frames according to the distance between the coordinates of two points on the horizontal line passing through the axis, and lock the universal wheels; adjust the height of the height adjustment rod , so that the connecting rod reaches the specified height position;

S3. According to the coordinate system in the construction drawings, use the total station to measure the two coordinate points of the horizontal line and mark them on the corresponding adjustment sleeves on each side;

S4. Bind the two ends of the connecting wire to the grooves of the adjusting sleeve respectively, hang the wire in the middle of the connecting wire, and tighten the two ends of the connecting wire with the wire tensioner respectively;

S5. Use the total station to re-calibrate the marked coordinate point. If there is a deviation between the coordinate point and the connection position between the connecting line and the adjusting sleeve, fine-tune the position of the connecting line by rotating the adjusting sleeve to ensure that the connecting line is in line with the adjusting sleeve. The coordinates of the connection point coincide with the coordinates of two points on the horizontal line;

S6. After the secondary calibration coordinate points of the total station are qualified, the lowering position of the line pendant 8 is the axis position, and the axis of the equipment installation or the axis of the civil construction foundation can be calibrated according to the construction drawings.

Compared with prior art, the beneficial effect of the present invention is:

The calibration tools involved in this method are simple to make, and can be obtained on site. The connecting wires can be better supported by the two support frames, and the calibration position can be adjusted in a large range by adjusting the position of the support frames. The fine-tuning of the connection line and the line drop position ensures the calibration accuracy and avoids the accuracy error caused by manual on-site spring line.

Further, the preferred scheme adopted by the present invention is:

The height adjustment rod includes a fixed rod and a telescopic rod. The fixed rod is an internal hollow structure, and the side wall of the fixed rod is provided with a limit hole; The hole, the fixed rod and the telescopic rod are fixed by pins placed in the limit hole and the positioning hole.

Description of drawings

The drawings described here are used to provide further understanding of the present invention, constitute a part of the application, and do not limit the present invention. In the attached picture:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of support frame;

Fig. 3 is the schematic structural view of the adjusting sleeve on the connecting rod;

In the figure: support frame 1; height adjustment rod 2; fixed rod 21; telescopic rod 22; universal wheel 3; reinforcing rod 4; connecting rod 5; adjusting sleeve 6; groove 61; Limiting hole 9; Positioning hole 10.

Implementation

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

As shown in Figures 1 to 3, an axis center calibration method is performed in the following steps:

S1. Make the axis centerline calibration tool. The calibration tool is mainly composed of a line pendant and two support frames. Each support frame 1 is a rectangular frame structure welded by square steel pipes. Two adjacent top corners of the rectangular frame structure A height adjustment rod 2 is vertically arranged at each place, and the upper part of each height adjustment rod 2 is connected with the rectangular frame by a reinforcing rod 4;

In order to facilitate the overall movement of the support frame 1, universal wheels 3 are installed at the bottom of the support frame 1 close to the four top corners, and the overall movement of the support frame 1 is realized by the universal wheels 3;

Every height adjusting rod 2 is made up of fixed rod 21 and telescopic rod 22 respectively, and the inside of fixed rod 21 is hollow structure, and the lower end of fixed rod 21 is welded with bracing frame 1, and offers limit hole 9 on the side wall of fixed rod 21; The lower end of rod 22 is inserted in the fixed rod 21, and telescopic rod 22 corresponding fixed rod 21 offers the sidewall of limited hole 9 one side and is provided with several positioning holes 10 equidistantly, adjusts that telescopic rod 22 stretches out fixed rod 21 After height, align the limit hole 9 with the positioning hole 10 and fix it with the pin;

The two height adjustment rods 2 of the same support frame 1 are connected by connecting rods 5 with scales on the surface, and the two ends of the connecting rods 5 are respectively connected with the telescopic rods 22 on the respective corresponding sides; the two connecting rods 5 are respectively There is a screw rod with a threaded structure on the outside, and an adjustment sleeve 6 is threaded on the connecting rod 5. One end surface of the adjusting sleeve 6 is used as a reference plane to cooperate with the scale on the connecting rod 5, and the adjustment sleeve 6 can be adjusted to the line sinker 8 by rotating the adjusting sleeve 6. make fine-tuning;

The two adjustment sleeves 6 are connected by a connecting wire 7 (the connecting wire can be a steel wire or a thin rope). In order to avoid the sliding of the connecting wire 7 during the calibration process and affect the calibration result, the outer wall of each adjustment sleeve 6 Ring-shaped grooves 61 are provided in the middle positions of each, and the connecting wire 7 is placed in the groove 61, and the groove 61 can limit the connecting wire 7; the middle part of the connecting wire 7 is provided with a wire dropper 8.

S2. Move the two support frames 1 as a whole to the position of the axis to be measured, determine the horizontal distance between the two support frames 1 according to the distance between the coordinates of two points on the horizontal line passing through the axis, and lock the universal wheel 3; adjust the height adjustment The height of the rod 2 makes the connecting rod 5 reach the designated height position.

S3. According to the coordinate system in the construction drawing, use the total station to measure the two coordinate points of the horizontal line and mark them on the corresponding adjustment sleeves 6 on each side.

S4. Bind the two ends of the connecting wire 7 to the grooves of the adjusting sleeve 6 respectively, hang the wire pendant 8 in the middle of the connecting wire 7, and tighten the two ends of the connecting wire 7 with a wire tensioner respectively.

S5. Use the total station to calibrate the coordinate points marked in the position again. If there is a deviation between the coordinate point and the connection position between the connecting line 7 and the adjusting sleeve 6, fine-tune the position of the connecting line 7 by rotating the adjusting sleeve 6 to ensure that the connecting line 7 and the coordinates of the connection point of the adjustment sleeve 6 coincide with the coordinates of two points on the horizontal line.

S6. After the secondary calibration coordinate points of the total station are qualified, the lowering position of the line pendant 8 is the axis position, and the axis of the equipment installation or the axis of the civil construction foundation can be calibrated according to the construction drawings.

When the present invention is applied, the support frame is used to better support the connecting wire, and the position of the wire drop is adjusted by adjusting the position of the connecting wire on the connecting rod, so as to ensure the accuracy of calibration and avoid errors caused by manual springing of the wire. The difficulty and labor intensity of construction operations are reduced, and the normal operation of construction operations is guaranteed.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims (2)

1. An axis center line calibration method is characterized by comprising the following steps:

s1, manufacturing an axis center line calibration tool, wherein the calibration tool comprises a line drop and two support frames, and universal wheels are respectively arranged at the bottoms of the support frames; two height adjusting rods are respectively arranged on each supporting frame, the two height adjusting rods of the same supporting frame are connected through a connecting rod with scales, an external thread structure is arranged outside the connecting rod, an adjusting sleeve is connected to the external thread of the connecting rod, a connecting wire is arranged between the two adjusting sleeves, and a wire pendant is arranged in the middle of the connecting wire;

s2, integrally moving the two support frames to the position of an axis to be measured, determining the horizontal distance between the two support frames according to the distance between two point coordinates on a horizontal line passing through the axis, and locking the universal wheel; the height of the height adjusting rod is adjusted to enable the connecting rod to reach a designated height position;

s3, according to a coordinate system in a construction drawing, measuring two coordinate points of a horizontal line by using a total station and marking the two coordinate points on corresponding adjusting sleeves on one side of each coordinate point;

s4, binding two ends of the connecting wire on grooves of the adjusting sleeve respectively, hanging the wire pendant in the middle of the connecting wire, and tightening the two ends of the connecting wire through the wire tightener respectively;

s5, using the total station to calibrate coordinate points marked with positions again, and if deviation exists between the coordinate points and the connection positions of the connecting wires and the adjusting sleeve, finely adjusting the positions of the connecting wires by rotating the adjusting sleeve so as to ensure that the coordinates of the connection points of the connecting wires and the adjusting sleeve coincide with the coordinates of two points on a horizontal line;

and S6, after the secondary calibration coordinate point of the total station is qualified, the position where the line drop 8 is placed is the axis position, and the installation axis of the equipment or the civil engineering foundation axis is calibrated according to the construction drawing.

2. The axis center line calibration aid of claim 2, wherein: the height adjusting rod in S1 comprises a fixing rod and a telescopic rod, wherein the fixing rod is of an internal hollow structure, and a limiting hole is formed in the side wall of the fixing rod; the telescopic link cartridge is at the top of dead lever, and the interval is equipped with a plurality of locating hole on the lateral wall of telescopic link, and dead lever and telescopic link are fixed through the round pin axle of arranging in spacing hole and locating hole.