Auxiliary tool with bidirectional suspension angle receiver accurate positioning function

Abstract

An auxiliary tool with a bidirectional suspension angle receiver accurate positioning function is provided with an annular main plate, a transverse plate and a longitudinal plate are fixed in the annular main plate and are perpendicular to each other, and a formed intersection point coincides with the circle center of the annular main plate; 0-degree scale marks, 90-degree scale marks, 180-degree scale marks and 270-degree scale marks are sequentially carved at the intersection positions of the end parts of the transverse plate and the longitudinal plate and the circular ring-shaped main plate, targets are fixed at the 0-degree scale marks, the 90-degree scale marks, the 180-degree scale marks and the 270-degree scale marks, and a central target is arranged at the intersection position formed by the transverse plate and the longitudinal plate; and the target and the central target are matched with the total station. A plurality of adjustable magnetic attraction points are arranged in the circumferential direction of the outer surface of the main plate at equal intervals, and the auxiliary tool is attracted to the inner pipe wall of the receiver pipe through the adjustable magnetic attraction points. Aiming at a receiver pipe with a special suspension angle, the problem of installation precision detection of a circular pipe type component under complex working conditions is solved, and accurate data of a datum plane in the pipe can be accurately detected through one-time measurement of the total station.

Description

Technical Field

[0001] This invention belongs to the field of construction and design of very large crude carriers, and specifically relates to an auxiliary tooling with a bidirectional suspension angle receiver for precise positioning. Background Technology

[0002] A certain marine engineering product has various types of riser support structures installed on the outer side plating. To ensure installation accuracy, it is necessary to control and inspect the positioning accuracy of the riser support structure. The inspection method for the positioning and installation of the receiver segment (hereinafter referred to as the receiver tube) within the riser support needs strict control and inspection. During inspection, the coordinates of 3-4 points distributed at a certain angle within a horizontal cross-section of the receiver's inner edge are used to confirm the installation angle and whether the installation position dimensions are accurate. For an approximate circular tube's inner edge, there are different suspension angles and azimuth angles in the X, Y, and Z directions. The installation dimensions only indicate the median distance between the centroids on a certain horizontal plane to determine the receiver's installation position parameters. Measurement requires the use of a total station to determine the positioning data, which presents significant challenges in practice. The measurement data requires multiple calculations to obtain the required suspension angle and azimuth angle values. To address these measurement difficulties, a set of auxiliary measurement tools is needed, tailored to the field environment, based on the total station measurement mode and data analysis requirements, to assist the total station in measurement and ensure the receiver's positioning accuracy. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides an auxiliary tooling system with a bidirectional suspension angle receiver for precise positioning. This system, designed to work with a total station, enables precise and rapid determination of the riser installation angle. The technical solution employed is as follows:

[0004] An auxiliary fixture for precise positioning with a bidirectional suspended angle receiver includes a circular main board. A horizontal plate and a vertical plate are fixed inside the circular main board, perpendicular to each other, with their intersection point coinciding with the center of the circular main board. Scale lines are engraved on the surface of the circular main board along its circumference. At the intersections of the horizontal and vertical plates with the circular main board, scale lines of 0°, 90°, 180°, and 270° are sequentially engraved. Targets are fixed at 0°, 90°, 180°, and 270°. A central target is placed at the intersection of the horizontal and vertical plates. The targets and the central target are used in conjunction with a total station.

[0005] Multiple adjustable magnetic attraction points are evenly spaced along the circumference of the outer surface of the motherboard. Each adjustable magnetic attraction point consists of a magnet and a magnet bracket. The magnet bracket is fixedly connected to the annular motherboard. A baffle is fixed on the magnet bracket. The end of a bolt passes through the baffle and is fixedly connected to the magnet. The bolt and the baffle are threadedly connected. The magnet is attracted to the inner wall of the receiver tube.

[0006] Furthermore, the aforementioned auxiliary tooling with a bidirectional suspension angle receiver for precise positioning further includes scale lines engraved on the surface of the annular motherboard.

[0007] Furthermore, the aforementioned auxiliary tooling with a bidirectional suspension angle receiver for precise positioning has four adjustable magnetic points, which are equally spaced along the circumference of the circular main board. The four adjustable magnetic points are located at the 0°, 90°, 180°, and 270° scales, respectively.

[0008] Furthermore, the aforementioned auxiliary tooling with a bidirectional suspension angle receiver for precise positioning further includes a bubble fixed at the ends of the horizontal and vertical plates, respectively. The bubble is positioned at the end near 0° and 90°, on the curved edge of the main plate.

[0009] Furthermore, the aforementioned auxiliary tooling with a bidirectional suspension angle receiver for precise positioning has a reinforcing elbow plate provided behind the horizontal and vertical plates.

[0010] Furthermore, in the aforementioned auxiliary tooling for precise positioning of a bidirectional suspension angle receiver, the outer radius of the circular motherboard is 10mm smaller than the inner radius of the receiver tube.

[0011] The specific steps for using the above-mentioned auxiliary tooling with bidirectional suspension angle receiver for precise positioning are as follows:

[0012] S1: Fix the fixture inside the receiver reference ring. After the fixture motherboard and the ring projection are completely aligned, fix the fixture by magnetic attraction points.

[0013] S2: Use a crane to lift the receiver, bring the receiver close to the opening in the hull, adjust the crane hook, insert the receiver into the hull structure, observe the centering of the two bubbles, and adjust the receiver angle based on the bubble centering.

[0014] S3: Set a 1mm diameter pinhole in the center of the positioning fixture, thread a rope through the pinhole, suspend a plumb bob, and compare it with the crosshairs of the ground line. Adjust the position of the receiver according to the deviation distance. After the plumb bob is completely aligned with the ground line, observe whether the two bubbles are centered. After the two bubbles are centered, weld the receiver to the hull structure.

[0015] S4: Set up a height benchmark under the tire plate, use a level to shift the horizontal reference point of the tire frame downward by Z1 value, and mark the horizontal reference point on the benchmark.

[0016] S5: Based on the distance (Z2) from the tire plate to the receiver positioning reference point marked on the design drawing, calculate the distance (Z=Z1+Z2) from the receiver positioning reference point to the reference line on the pole. During positioning, use a level to detect the distance from the horizontal pole reference point to the center target (4).

[0017] S6: When positioning, first set up the level instrument, align the horizontal line in the eyepiece of the level instrument with the elevation line, and level the instrument to a horizontal state. Align the zero point of the measuring tape with the reference point of the center target, and hang the tape vertically. Observe the scale value of the vertically hanging tape through the eyepiece of the level instrument. When the scale value is the same as the Z value, the positioning height of the receiver is consistent with the design value. Then check the deviation between the plumb bob and the ground line and continue to adjust. When the tip of the plumb bob coincides with the ground line, the position of the receiver meets the design requirements. Then check whether the two bubbles are centered. If they are not centered, adjust the angle of the receiver according to the actual situation until the two bubbles on the fixture are centered.

[0018] S7: Continuously track and adjust in a loop to meet the following requirements:

[0019] 1. The Z-value deviation must meet the tolerance requirements.

[0020] 2. The overlap between the plumb bob and the ground sample line meets the tolerance requirements.

[0021] 3. If the two bubbles are perfectly centered, the receiver positioning accuracy is considered to have met the tolerance requirements, and the receiver can then be sealed.

[0022] Furthermore, in the above-mentioned method of using an auxiliary tooling with a bidirectional suspension angle receiver for precise positioning, multiple jigs are supported at the top of jig plates, and a hull structure with openings is placed on the jig plates.

[0023] This invention innovatively solves the problem of measuring the installation accuracy of circular tubular components under complex working conditions, specifically for receiver tubes with special suspension angles. By using a total station for a single measurement, the precise data of the reference surface inside the tube can be accurately measured. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the front structure of the present invention located inside the receiver tube;

[0025] Figure 2 yes Figure 1 Schematic diagram of the structure from the perspective of a mid-BB;

[0026] Figure 3 yes Figure 2 Schematic diagram of the structure from the perspective of the middle CC;

[0027] Figure 4 This is a schematic diagram of the hull structure before the receiver tube of the present invention is pre-installed;

[0028] Figure 5 This is a schematic diagram of the riser receiver hoisting;

[0029] Figure 6 This is a cross-sectional view of the receiver during precise positioning;

[0030] Figure 7 This is a longitudinal section diagram of the receiver during precise positioning;

[0031] Figure 8 yes Figure 4 , 5 Schematic diagrams of AA perspectives in sections 6 and 7;

[0032] Among them, 1-main board, 2-horizontal plate, 3-target, 4-center target, 5-longitudinal plate, 6-bubble, 7-receiver tube, 8-baffle, 9-bolt, 10-magnet, 11-reinforcing elbow plate, 12-adjustable magnetic attraction point, 15-mattress, 16-mattress frame, 17-plaster line, 18-ground line, 20-height pole, 21-level instrument, 22-measuring tape. Detailed Implementation

[0033] The invention will be further described with reference to the accompanying drawings. Example

[0034] This invention utilizes magnetic attraction points to adhere and fix auxiliary tooling to the pipe wall. It comprises a circular main plate, within which are fixed horizontal and vertical plates. The horizontal and vertical plates are perpendicular to each other, and their intersection coincides with the center of the circular main plate. The circular plate is precisely engraved with 0°, 90°, 180°, and 270° position lines, as well as graduation lines at minimum intervals of 5 degrees, on its surface. The 0°, 90°, 180°, and 270° positions are evenly spaced. Graduation lines are sequentially engraved at the intersections of the horizontal and vertical plates with the circular main plate. Targets are fixed at these positions, and a central target is placed at the intersection of the horizontal and vertical plates. These targets and the central target work in conjunction with the total station.

[0035] Four adjustable magnetic attraction points are evenly spaced along the circumference of the main board's outer surface. Each magnetic attraction point consists of a magnet and a magnet support. The four adjustable magnetic attraction points are located at 0°, 90°, 180°, and 270° respectively. The magnet support is fixedly connected to the annular main board, and a baffle is fixed to the magnet support. The end of a bolt passes through the baffle and is fixedly connected to the magnet. The bolt and the baffle are threaded together. The magnet is attracted to the inner wall of the receiver tube. The outer radius of the annular main board is 10mm smaller than the inner radius of the receiver tube. Reinforcing elbow plates are provided behind the horizontal and vertical plates. The reinforcing elbow plates provide sufficient strength to ensure that the flatness of the upper surface of the fixture fully meets the requirements (±0.05mm).

[0036] When using the auxiliary fixture, the ruler plate needs to be placed inside the receiver tube first. The ring-shaped ruler plate is then fixed to the inner wall of the receiver tube using the four magnetic fixing points on its outer end, ensuring that the reference plane of the ring-shaped ruler plate coincides with the reference line of the tube wall. By adjusting the magnetic attraction point screw rod, the ring-shaped ruler plate is made completely concentric with the tube wall and fixed. A total station can then be used to measure the reflective targets at different positions on the ring-shaped ruler plate. Bulbs are placed on the ring-shaped ruler plate at 0° and 90° (to detect the angle between the reference plane and the horizontal plane of the earth). The angle gauge must be placed completely parallel to the 0° and 90° scale lines. The bulbs measure the tilt angle of the reference plane of the inner ring surface of the receiver in the horizontal and vertical directions.

[0037] A method for using an auxiliary tooling with a bidirectional suspension angle receiver for precise positioning, the specific steps of which are as follows:

[0038] S1: Fix the fixture inside the receiver reference ring. After the fixture motherboard and the ring projection are completely aligned, fix the fixture by magnetic attraction points.

[0039] S2: Use a crane to lift the receiver, bring the receiver close to the opening in the hull, adjust the crane hook, insert the receiver into the hull structure, observe the centering of the two bubbles, and adjust the receiver angle based on the bubble centering.

[0040] S3: A 1mm diameter pinhole is set in the center of the positioning fixture. A rope is threaded through the pinhole, and a plumb bob 17 is suspended. The plumb bob is compared with the crosshair of the ground line 18. The position of the receiver is adjusted according to the deviation distance. After the plumb bob is completely aligned with the ground line, the two bubbles are observed to be centered. After the two bubbles are centered, the receiver is sealed to the hull structure.

[0041] S4: Under the tire plate 15, set up a height marker 20, use a level 21 to shift the horizontal reference point of the tire frame downward by Z1 value, and draw the horizontal reference point on the marker to make a mark.

[0042] S5: Based on the distance (Z2) from the tire plate to the receiver positioning reference point marked on the design drawing, calculate the distance (Z=Z1+Z2) from the receiver positioning reference point to the reference line on the pole. During positioning, use a level to detect the distance from the horizontal pole reference point to the center target (4).

[0043] S6: When positioning, first set up the level instrument, align the horizontal line in the eyepiece of the level instrument with the elevation line, and level the instrument to a horizontal state. Align the zero point of the measuring tape 22 with the reference point of the center target, and hang the tape vertically. Observe the scale value of the vertically hanging tape through the eyepiece of the level instrument. When the scale value is the same as the Z value, the positioning height of the receiver is consistent with the design value. Then check the deviation between the plumb bob and the ground line, and continue to adjust. When the tip of the plumb bob coincides with the ground line, the position of the receiver meets the design requirements. Then check whether the two bubbles are centered. If they are not centered, adjust the angle of the receiver according to the actual situation until the two bubbles on the fixture are centered.

[0044] S7: Continuously track and adjust in a loop to meet the following requirements:

[0045] 1. The Z-value deviation must meet the tolerance requirements.

[0046] 2. The overlap between the plumb bob and the ground sample line meets the tolerance requirements.

[0047] 3. If the two bubbles are perfectly centered, the receiver positioning accuracy is considered to have met the tolerance requirements, and the receiver can then be sealed.

[0048] After establishing the station using a total station, the coordinates of the center target of the circular ruler plate are measured. The distance between the baseline and the center line is calculated and compared with the design value to accurately calculate the deviation of the receiver positioning data from the design value. The position and angle of the receiver are adjusted to meet the tolerance before sealing and welding. The above method for testing receivers with special suspension angles (circular tubular structure) innovatively solves the problem of measuring the installation accuracy of circular tubular components under such complex working conditions. Through a single measurement with a total station, the precise data of the reference surface inside the tube can be accurately measured.

Claims

1. An auxiliary tool for accurate positioning of a two-way hanger corner receiver, characterized in that, There is a circular main plate (1), and a horizontal plate (2) and a vertical plate (5) are fixed inside the circular main plate. The horizontal plate and the vertical plate are perpendicular to each other, and the intersection point formed coincides with the center of the circular main plate. Along the circumference of the circular main plate, scale lines are engraved on the surface of the circular main plate, and at the intersection of the ends of the horizontal plate and the vertical plate with the circular main plate, scale lines of 0°, 90°, 180° and 270° are engraved in sequence. Targets (3) are fixed at 0°, 90°, 180° and 270°, and a central target (4) is set at the intersection point formed by the horizontal plate and the vertical plate. The target (3) and the central target assist the total station in measurement. Multiple adjustable magnetic attraction points (12) are evenly spaced along the outer surface of the main board. Each adjustable magnetic attraction point consists of a magnet and a magnet bracket. The magnet bracket is fixedly connected to the circular main board. A baffle (8) is fixed on the magnet bracket. The end of the bolt (9) passes through the baffle and is fixedly connected to the magnet (10). The bolt is threadedly connected to the baffle. The magnet is attracted to the inner wall of the receiver tube (7).

2. An auxiliary tool for precise positioning of a two-way hanger corner receiver according to claim 1, characterized in that, The scale lines engraved on the surface of the circular motherboard.

3. An auxiliary tool for precise positioning of a two-way hanger corner receiver according to claim 1, characterized in that, There are four adjustable magnetic attraction points, which are evenly spaced along the circumference of the circular main board. The four adjustable magnetic attraction points are located at the 0°, 90°, 180° and 270° scales respectively.

4. An auxiliary tool for precise positioning of a two-way hanger corner receiver according to claim 1, characterized in that, A water bubble (6) is fixed at the end of the horizontal plate and the vertical plate respectively, and the water bubble is set at the end near 0° and 90°.

5. An auxiliary tool for precise positioning of a two-way hanger corner receiver according to claim 1, characterized in that, Reinforcing elbows (11) are provided behind the horizontal and vertical plates.

6. An auxiliary tool for precise positioning of a two-way hanger corner receiver according to claim 1, characterized in that, The outer radius of the circular motherboard is 10mm smaller than the inner radius of the receiver tube.

Images