Pipe manufacturing precision detection supporting tool

Abstract

A pipe manufacturing precision detection supporting tool comprises a supporting part and an end face detection part. The supporting part is provided with two vertically-arranged vertical plates, the two vertical plates are of the same structure and are connected through a connecting plate, two rollers are fixed to the tops of the two vertical plates, a gap exists between the two rollers, the vertical plate located between the two rollers is sunken downwards, the heights of the two rollers are the same, and a motor is fixed to the lower portion of one roller. A belt is wound between the motor shaft and the roller shaft; the end face detection part is provided with a baffle, a main limiting shaft, an electronic vernier caliper and a range finder are sequentially arranged at the center of the baffle from bottom to top, two auxiliary limiting shafts are arranged on the two sides above the main limiting shaft, the main limiting shaft is located below the center of the distance between the two auxiliary limiting shafts, and the main limiting shaft and the auxiliary limiting shafts penetrate through a vertical plate. And the end face detection part is fixedly connected with the supporting part. According to the invention, the structure is simple, the deviation in the measuring tape detection is avoided, the detection can be completed by one person, the digital detection is realized, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of marine vessel design and construction, and specifically relates to a support tooling for testing the accuracy of pipe manufacturing. Background Technology

[0002] During the pipe manufacturing process, conventional inspection tools such as measuring tapes, spirit levels, angle gauges, and right-angle clamps are required to inspect the pipe manufacturing accuracy. During the inspection, the pipe needs to be placed on a platform and inspected in a horizontal state. The inspection process requires multiple people to work together to measure the dimensions with a measuring tape, which is cumbersome and results in large deviations.

[0003] The pipe manufacturing process requires dimensional and flange end-face accuracy checks. Using one flange end face of the straight pipe as a reference, a measuring tape is used to measure the distance between the two end faces. This requires two people working together. When the measuring tape is pulled parallel to the center of the pipe from the outside, there is a certain thickness gap between the measuring tape point and the raised machined surface. During inspection, two people need to use a spirit level close to the flange end face, extending the spirit level as a reference for the measurement. In practice, deviations are prone to occur. Furthermore, the pipe length should only be measured after the flange end-face accuracy is met. The inspection process itself is prone to errors, leading to rework and repair issues. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a pipe manufacturing accuracy inspection support fixture, designed to allow for single-person operation and inspection, thereby reducing dimensional deviations in pipe manufacturing, improving construction efficiency, and lowering the pipe manufacturing error rate. The technical solution adopted is as follows:

[0005] A pipe manufacturing precision testing support fixture, wherein flanges are fixed at both ends of the round pipe to be tested, and a measuring device is provided, the measuring device including a support part and an end face testing part.

[0006] The support section has two vertically mounted plates with identical structures, connected by a connecting plate. Two rollers are fixed at the top with a gap between them. The plate between the two rollers is recessed downwards, and the two rollers are at the same height. A motor is fixed under one of the rollers, and a belt is wound between the motor shaft and the roller shaft.

[0007] The end face detection section has a baffle. From bottom to top, the baffle's central axis is equipped with a main limiting axis, an electronic vernier caliper, and a rangefinder. The front ends of the electronic vernier caliper and the rangefinder penetrate the baffle and are located on the same vertical plane as the baffle. Two secondary limiting axes are set on both sides above the main limiting axis. The main limiting axis is located below the center of the distance between the two secondary limiting axes. The main and secondary limiting axes pass through the vertical plate, fixing the end face detection section to the support section. There is a gap between the baffle and the vertical plate.

[0008] A bracket is installed on one side of the top of the upright plate, and an operation panel is fixed on the bracket. The operation panel controls the motor and the rangefinder.

[0009] In use, a measuring device is installed at each end of the circular tube to be tested. The circular tube is placed on the rollers of the measuring device, and a flange is placed on one side of the circular tube to be tested. The end of the circular tube to be tested is fixed to the flange, and the baffle is in contact with the outer surface of the flange end face. The front end of the electronic vernier caliper has a magnetic roller, which is attracted to the flange end face. The motor is started, and the belt drives one roller to rotate, which in turn drives the circular tube to be tested and the other roller to rotate. The electronic vernier caliper measures the flatness of the flange end face. After the measurement data meets the requirements, the flange and the pipe wall are spot welded.

[0010] After installing one flange, place the flange on the other side of the pipe to be tested. Use a rangefinder to measure the distance between the flange end face that has been spot-welded and the flange end face that is about to be spot-welded. Once the distance meets the requirements, check the flange hole angle. Once the flange hole angle meets the requirements, spot weld the flange.

[0011] Furthermore, in the aforementioned pipe manufacturing precision testing support fixture, the rangefinder is fixed to the baffle via a support plate, and a reinforcing plate is fixed below the support plate.

[0012] Furthermore, the aforementioned pipe manufacturing precision testing support fixture has reinforcing plates fixed on both the upper and lower sides of the electronic vernier caliper.

[0013] Furthermore, the aforementioned pipe manufacturing precision testing support fixture has magnets symmetrically arranged on the left and right sides of the baffle, which are attracted to the flange end face.

[0014] Furthermore, in the aforementioned tube manufacturing precision testing support fixture, the main limiting shaft is located directly below the center point of the distance between the two rollers.

[0015] Furthermore, the aforementioned pipe manufacturing precision testing support fixture is equipped with an electronic vernier caliper that displays the measured data.

[0016] This invention has a simple structure, avoids the zero-point determination deviation and line-of-sight deviation in tape measure testing, allows one person to complete the test, and achieves digital testing, reducing dimensional deviations in pipe manufacturing, improving construction efficiency, reducing the pipe manufacturing deviation rate, and measuring values ​​accurate to ±1mm. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the supporting part;

[0018] Figure 2 This is a schematic diagram of the main structure of the end face inspection section;

[0019] Figure 3This is a side view diagram of the end face inspection section;

[0020] Figure 4-5 This is a schematic diagram of the measuring device in use;

[0021] Among them, 1-the round tube to be tested, 2-flange, 3-vertical plate, 4-roller, 5-motor, 6-belt, 7-rangefinder, 8-electronic vernier caliper, 9-baffle, 10-connecting plate, 11-magnetic roller, 13-bracket, 14-support plate, 15-reinforcing plate, 18-operation panel, 19-shaft, 21-magnet, 25-secondary limit shaft, 26-main limit shaft. Detailed Implementation

[0022] The invention will be further described with reference to the accompanying drawings.

[0023] A device for measuring the manufacturing accuracy of pipes and the flange end face, wherein flanges are fixed at both ends of the circular pipe to be measured, and the measuring device includes a support part and an end face detection part.

[0024] like Figure 1 As shown, the support part has two vertically set upright plates with the same structure. They are connected by a connecting plate and two rollers are fixed at the top. There is a gap between the two rollers. The upright plate between the two rollers is recessed downward. The two rollers are set parallel to each other on the same horizontal plane. A motor is fixed under one of the rollers, and a belt is wound between the motor shaft and the roller shaft.

[0025] like Figure 2 , 3 As shown, the end-face detection section includes a baffle. From bottom to top, a main limit shaft, an electronic vernier caliper, and a rangefinder are sequentially arranged along the baffle's central axis. The front ends of the electronic vernier caliper and the rangefinder penetrate the baffle and are on the same horizontal plane as the baffle surface. Reinforcing plates are fixed to the upper and lower sides of the electronic vernier caliper. The electronic vernier caliper has a display screen, and the measured data is displayed on the screen. The rangefinder is fixed to the baffle via a support plate, and a reinforcing plate is fixed below the support plate. Secondary limit shafts are arranged on both sides above the main limit shaft. The main and secondary limit shafts pass through a vertical plate, fixing the end-face detection section to the support section. There is a gap between the baffle and the vertical plate. Magnets are symmetrically arranged on the left and right sides of the baffle, and the magnets are attracted to the flange end face. The main limit shaft is located directly below the center point of the distance between the two rollers.

[0026] A bracket is installed on one side of the top of the upright plate, and an operation panel is fixed on the bracket. The operation panel controls the motor and the rangefinder.

[0027] like Figure 4 , 5As shown, a measuring device is installed at each end of the circular tube to be tested. The circular tube is placed on the rollers of the measuring device. A flange is placed on one side of the circular tube to be tested, and the end of the circular tube to be tested is fixed to the flange. The baffle is in contact with the outer surface of the flange end face. The front end of the electronic vernier caliper has a magnetic roller, which is attracted to the flange end face. The motor is started, and the belt drives one roller to rotate, which in turn drives the circular tube to be tested and the other roller to rotate. During the rotation, the electronic vernier caliper measures the flatness of the flange end face. After the measurement data meets the requirements, the flange and the pipe wall are spot welded.

[0028] After installing one flange, place another flange on the other side of the pipe to be tested. Use a rangefinder to measure the distance between the flange end face that has been spot-welded and the flange end face that is about to be spot-welded. The measured data is the net distance between the two flange faces of the pipe, which is the actual length of the pipe. After the distance meets the requirements, check the flange hole angle. After the flange hole angle meets the requirements, the flange can be spot-welded.

[0029] After spot welding, a remote-controlled rangefinder via mobile phone is used to measure the distance between the flange end faces. This completes the measurement and calibration of multiple precision data during pipe manufacturing.

[0030] A motor mounting plate is installed below the upright plate to fix the DC motor. An output pulley is set at the output end of the DC motor. A toothed belt is set between the output pulley and the accompanying pulley on the roller. A set of rechargeable batteries is fixed on the motor base plate, connected to the motor to provide power, and the start, stop and speed of the motor are controlled by a power switch.

[0031] A thicker main limiting shaft is vertically mounted at the center of the baffle. Two secondary limiting shafts, with a diameter slightly smaller than the main limiting shaft, are mounted perpendicular to the end plate on both sides of the end baffle. These limiting shafts pass through the support structure's vertical plate (with drilled holes for embedded bearings) and move axially, ensuring the distance between the flange and the support structure meets the required requirements. These three limiting shafts ensure the end baffle will not rotate relative to the pipe flange, only moving axially. A reinforcing plate ensures the stability of the support structure. During use, the rangefinder is placed on the support plate and secured with adjusting screws. The front face of the rangefinder is flush with the end plate, and the rangefinder's height is within the pipe cavity, allowing the measuring laser to penetrate the cavity and reach the flange on the other side. When the flange is positioned, pressing the rangefinder's measurement button activates the laser, measuring the distance between the two flange end faces on the upper end face of the support system on the other end of the pipe.

[0032] Pressing the rotation switch on the remote control causes the motor to drive the roller to rotate. The friction between the roller and the pipe wall causes the pipe to rotate. The pipe flange comes into contact with the vernier system. As the flange rotates, the flatness of the flange end face can be displayed through the measurement value of the vernier detection system. The deviation range is determined by recording the distance at different points after one rotation.

Claims

1. A support fixture for testing the precision of pipe manufacturing, characterized in that, Including the support section and the end face detection section; The support section has two vertically set upright plates with the same structure. They are connected by a connecting plate and two rollers are fixed at the top. There is a gap between the two rollers. The upright plate between the two rollers is recessed downwards. The two rollers are at the same height. A motor is fixed under one of the rollers. A belt is wound between the motor shaft and the roller shaft. The end face detection section has a baffle. From bottom to top, the baffle has a main limiting shaft, an electronic vernier caliper, and a rangefinder. The front ends of the electronic vernier caliper and the rangefinder penetrate the baffle and are on the same vertical plane as the baffle. Two secondary limiting shafts are set on both sides above the main limiting shaft. The main limiting shaft is located below the center of the distance between the two secondary limiting shafts. The main limiting shaft and the secondary limiting shafts pass through the vertical plate and fix the end face detection section to the support section. There is a gap between the baffle and the vertical plate. A bracket is installed on one side of the top of the upright plate, and an operation panel is fixed on the bracket. The operation panel controls the motor and the rangefinder.

2. The pipe manufacturing precision testing support fixture according to claim 1, characterized in that, The rangefinder is fixed to the baffle by a support plate, and a reinforcing plate is fixed below the support plate.

3. The pipe manufacturing precision testing support fixture according to claim 1, characterized in that, The electronic vernier caliper is fixed with reinforcing plates on both the top and bottom sides.

4. The pipe manufacturing precision testing support fixture according to claim 1, characterized in that, Magnets are symmetrically arranged on the left and right sides of the baffle, and the magnets are attracted to the flange end face.

5. The pipe manufacturing precision testing support fixture according to claim 1, characterized in that, The main limit axis is located directly below the center point of the distance between the two rollers.

6. The pipe manufacturing precision testing support fixture according to claim 1, characterized in that, The electronic vernier caliper has a display screen, through which the measured data is displayed.

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