Metal tube port roundness detection tool

Abstract

The utility model relates to the technical field of roundness detection, in particular to a metal tube port roundness detection tool, which comprises a disc body, extension frames are symmetrically fixed on two sides of the disc body, movable frames are arranged on the extension frames in a sliding manner, rollers can axially move along a metal tube, a transverse rail is rotatably arranged at the center of the disc body, and the transverse rail is connected with the disc body. The middle of the transverse rail is rotationally connected with the center of the disc body, movable rods are symmetrically arranged at the two ends of the transverse rail in a sliding mode, front rods extending in the direction of the pipeline are fixed to the far ends of the two movable rods, and distance measuring devices arranged at the front ends of the front rods perpendicularly face the direction of the metal pipe to measure the distance between the front rods and the wall of the metal pipe. A distance linkage assembly is connected between one set of movable rods and the corresponding set of movable frames close to the movable rods, the overall size is small, portability is achieved, automatic positioning of the distance measuring device is achieved through the arrangement of the distance linkage assembly, and the distance measuring device is kept in the state of being close to a metal pipe.

Description

Technical Field

[0001] This utility model relates to the field of roundness detection technology, specifically to a tool for detecting the roundness of metal pipe ends. Background Technology

[0002] Metal pipes are widely used in various industries such as petroleum, chemical, natural gas transportation, metallurgy, and nuclear power plants. In these applications, the roundness of the metal pipe ends not only affects the welding quality but also directly relates to the safety and reliability of the pipeline structure.

[0003] The ends of metal tubes are prone to deformation during cutting or transportation. Therefore, roundness testing is required before use to detect and correct the deformation in a timely manner. However, current roundness testing devices are bulky and not convenient for portable testing of metal tube ends.

[0004] Using vernier calipers for inspection can only be done at the port, and cannot create enough clamping space for sections near the port when the pipe diameter is large.

[0005] This solution provides a tool for detecting the roundness of metal pipe ends, which can not only perform portable detection of the roundness at the ends, but also move along the axial direction of the metal pipe for detection. Utility Model Content

[0006] The present invention aims to at least solve the problem in the prior art that it is not possible to simultaneously perform portable detection of the roundness of the port and the section near the port of a metal tube.

[0007] This solution provides a tool for detecting the roundness of the end of a metal tube, which is achieved by the following specific technical means: it includes a disc body, on both sides of the disc body are symmetrically fixed extension frames, the extension frames have movable frames that are slidably set, and the metal tube is clamped and held by rollers that are rotated and installed at the front end of the two sets of movable frames.

[0008] A horizontal rail rotates at the center of the disc, with its middle section rotatably connected to the center of the disc. Simultaneously, movable rods slide symmetrically at both ends of the horizontal rail. At the distal ends of both sets of movable rods, a front rod extending towards the pipe and parallel to the pipe is fixed. A distance measuring device positioned at the front end of the front rod, perpendicular to the metal pipe, measures the distance between the front rod and the metal pipe wall. Since the roller can move axially along the metal pipe, the distance between the disc and the pipe port can be adjusted, i.e., the distance between the distance measuring device and the port can be controlled. A spacing linkage component connects one set of movable rods to a corresponding set of movable frames. This spacing linkage component automatically adjusts the sliding of the two sets of movable rods in the horizontal rail according to the distance between the two sets of movable frames to regulate the spacing.

[0009] Preferred technical solution 1: At the same time, a radial groove is opened on the front side of the disc along the direction of the extension frame. The spacing linkage component includes a convex plate fixedly connected to the movable frame. The end of the convex plate slides into the radial groove. At the same time, the overlapping contact point of the convex plate and the movable rod is attracted by a magnet. After the roller clamps the metal tubes of different specifications, the movable rod is separated from the convex plate by rotating the horizontal rail and then rotates around the center of the disc to perform a circumferential roundness detection near the opening of the metal tube.

[0010] Preferred technical solution 2: Multiple sets of concentric circular rail grooves are concentrically formed on the front side of the disc body. The radial groove passes through the multiple sets of concentric circular rail grooves and passes through their center. Rotatable balls are also embedded on the movable rod. The movement of the convex plate can drive the movable rod to slide on the horizontal rail, so that the balls move to different concentric circular rail grooves. After the movable rod separates from the convex plate, the balls slide into a set of concentric circular rail grooves to further enhance the relative static state between the movable rod and the horizontal rail.

[0011] Preferred technical solution 3: Two sets of extension frames are rotatably installed with adjusting screws with different thread directions, and the movable frame is sleeved on the adjusting screws through threaded holes.

[0012] Preferred technical solution four: The rangefinder is located between the roller and the disc.

[0013] Preferred technical solution five: The extension frame is provided with a scale.

[0014] The above structure gives this solution the following advantages:

[0015] 1. Small overall size, portable, and convenient for roundness inspection of pipe ends and nearby sections before use;

[0016] 2. The distance measuring device is automatically positioned by using the spacing linkage component, keeping it close to the metal tube;

[0017] 3. It can measure the diameter of pipes. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0020] Figure 2 This is a state diagram for the use of this solution;

[0021] Figure 3 This is an exploded view of the plan;

[0022] Figure 4This is a schematic diagram of the disk structure in this solution.

[0023] Among them, 1. disc body, 101. display screen, 102. radial groove, 103. concentric circular rail groove, 2. extension frame, 201. scale, 3. movable frame, 4. roller, 5. horizontal rail, 6. movable rod, 601. front rod, 7. rangefinder, 8. spacing linkage assembly, 801. convex plate, 802. ball, 803. magnet, 9. control shaft, 10. handle, 11. adjusting screw, 12. bevel gear one, 13. transmission shaft, 14. bevel gear two. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-3 A metal pipe end roundness testing tool includes a disc body 1, with extension frames 2 symmetrically fixed on both sides of the disc body 1. The extension frames 2 have movable frames 3 slidably arranged on them. The metal pipe is clamped and fitted by rollers 4 rotatably installed at the front end of the two sets of movable frames 3. At the same time, since the rollers 4 can move axially along the metal pipe, the distance between the disc body 1 and the pipe end can be adjusted.

[0026] A horizontal rail 5 rotates at the center of the disc body 1. A control shaft 9, fixed to the center of the horizontal rail 5, is rotatably mounted on the disc body 1. The rotation of the control shaft 9 drives the horizontal rail 5 to rotate, completing the axial detection. A handle 10 is fixed to the rear of the disc body 1. The control shaft 9 extends from the hollow cavity of the handle 10. When in use, the handle 10 is held. The two ends of the horizontal rail 5 have symmetrically sliding movable rods 6. At the far ends of both sets of movable rods 6, there are front rods 601 extending towards the pipe. A distance measuring device 7 set at the front end of the front rod 601 is perpendicular to the metal pipe to measure the distance between the front rod 601 and the metal pipe wall. By observing the changes in the measured value, the detection of the metal pipe port and the vicinity of the port can be achieved. For measuring the roundness of the segment, the rangefinder 7 is located between the roller 4 and the disc 1. The rangefinder 7 is a non-contact electronic rangefinder. The disc 1 is equipped with a display screen 101 that is electrically connected to the electronic rangefinder to display the measured data. At the same time, a battery that powers the display screen 101 and the rangefinder 7 is also installed in the inner cavity of the disc 1. A spacing linkage component 8 is connected between a set of movable rods 6 and a set of movable frames 3 that are close to each other. The spacing linkage component 8 is used to automatically adjust the two sets of movable rods 6 in the horizontal rail 5 according to the spacing between the two sets of movable frames 3 to adjust the spacing. This allows the two sets of front rods 601 to automatically approach and distribute on both sides of the metal tube when the roller 4 clamps the metal tube.

[0027] Please see Figure 1 and Figures 3-4 A metal pipe end roundness detection tool is provided. A radial groove 102 is provided on the front side of the disc body 1 along the direction of the extension frame 2. The spacing linkage component 8 includes a protruding plate 801 fixedly connected to the movable frame 3. The end of the protruding plate 801 slides into the radial groove 102. Magnets 803 are provided at the overlapping contact points of the protruding plate 801 and the movable rod 6, and the two parts are attracted by the magnets 803. A certain sliding resistance is maintained between the movable rod 6 and the horizontal rail 5, but this sliding resistance is less than the magnetic attraction between the movable rod 6 and the protruding plate 801. After the roller 4 clamps metal pipes of different specifications, the movable rod 6 is separated from the protruding plate 801 by rotating the horizontal rail 5, and then rotates around the center of the disc body 1 to perform a circumferential roundness detection near the pipe end. Due to the sliding resistance between the movable rod 6 and the horizontal rail 5, the movable rod 6 and the horizontal rail 5 are in a relatively stationary state when the movable rod 6 moves away from the protruding plate 801, thus achieving a circumferential roundness detection of the metal pipe.

[0028] Please see Figure 1 and Figures 3-4A metal pipe end roundness testing tool has multiple sets of concentric circular rail grooves 103 concentrically formed on the front side of the disc body 1. A radial groove 102 passes through the multiple sets of concentric circular rail grooves 103 and passes through their center. A movable rod 6 is also embedded with a rotatable ball bearing 802. The movement of the convex plate 801 can drive the movable rod 6 to slide on the horizontal rail 5, so that the ball bearing 802 moves to different concentric circular rail grooves 103. After the roller 4 clamps metal pipes of different specifications, the ball bearing 802 moves to the corresponding set of concentric circular rail grooves 103. After the movable rod 6 separates from the convex plate 801, the ball bearing 802 slides in the set of concentric circular rail grooves 103 to further enhance the relative static state between the movable rod 6 and the horizontal rail 5, and avoid accidental displacement during testing caused by collision impact force.

[0029] Please see Figure 1 and Figure 3 A metal pipe end roundness testing tool is provided. Two sets of extension frames 2 are rotatably mounted with adjusting screws 11 with different thread directions. A movable frame 3 is sleeved on the adjusting screws 11 through threaded holes. The ends of the two sets of adjusting screws 11 rotate through the outer wall of the disc body 1 and extend into the inner cavity of the disc body 1. The ends that are close to each other are fixed with bevel gears 12. At the same time, a drive shaft 13 is rotatably mounted in the inner cavity of the disc body 1. The two ends of the drive shaft 13 are meshed with the corresponding bevel gears 12 through fixed bevel gears 14. This allows the two sets of adjusting screws 11 to rotate synchronously while avoiding motion interference with the control shaft 9. When one set of adjusting screws 11 is rotated, the other set of adjusting screws 11 can be linked to achieve synchronous approach or distance of the rollers 4 on both sides of the disc body 1.

[0030] Please see Figure 2 A tool for detecting the roundness of the end of a metal pipe, wherein the extension frame 2 is provided with a scale 201, and the diameter data of the metal pipe can be measured by observing the movement position of the movable frame 3 on the extension frame 2.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal tube port roundness inspection tool characterized by: Includes a disc body (1), with extension frames (2) symmetrically fixed on both sides of the disc body (1), and movable frames (3) slidably mounted on the extension frames (2), with rollers (4) rotatably mounted on the front ends of the two sets of movable frames (3). The center of the disc (1) is rotated with a horizontal rail (5), the middle part of the horizontal rail (5) is rotatably connected to the center of the disc (1), and the two ends of the horizontal rail (5) are symmetrically slidable with movable rods (6), and at the far end of the two sets of movable rods (6), there are front rods (601) that extend towards the pipe and are parallel to the pipe. The front end of the front rod (601) is provided with a rangefinder (7) that is perpendicular to the direction of the metal pipe. A spacing linkage component (8) is connected between one set of movable rods (6) and a set of movable frames (3) close to them. The spacing linkage component (8) is used to automatically adjust the two sets of movable rods (6) to slide in the horizontal rail (5) according to the spacing between the two sets of movable frames (3) to adjust the spacing.

2. The metal pipe end roundness detection tool according to claim 1, characterized in that: The front side of the disc (1) is provided with a radial groove (102) along the direction of the extension frame (2). The spacing linkage component (8) includes a convex plate (801) fixedly connected to the movable frame (3). The end of the convex plate (801) slides into the radial groove (102). At the same time, the convex plate (801) and the movable rod (6) are attracted by a magnet (803) at the overlapping contact point.

3. A metal tube port roundness inspection tool according to claim 2, characterized in that: The front side of the disc (1) has multiple sets of concentric circular rail grooves (103). The radial groove (102) passes through the multiple sets of concentric circular rail grooves (103) and passes through their center. The movable rod (6) is also equipped with rotating balls (802). After the horizontal rail (5) rotates and drives the movable rod (6) to separate from the convex plate (801), the balls (802) slide in the corresponding concentric circular rail grooves (103).

4. A metal tube port roundness inspection tool according to claim 1, characterized in that: The control shaft (9) is rotatably mounted on the disc (1) and fixed to the center of the horizontal rail (5).

5. A metal tube port roundness inspection tool according to claim 1, characterized in that: Two sets of extension frames (2) are rotatably mounted with adjusting screws (11) with different thread directions. The movable frame (3) is sleeved on the adjusting screws (11) through the threaded hole. The ends of the two sets of adjusting screws (11) extend into the inner cavity of the disc body (1), and the ends that are close to each other are fixed with bevel gear one (12). At the same time, a drive shaft (13) is rotatably mounted in the inner cavity of the disc body (1). The two ends of the drive shaft (13) mesh with the corresponding bevel gear one (12) through fixed bevel gear two (14).

6. A metal tube port roundness inspection tool according to claim 1, characterized in that: The extension frame (2) is provided with a scale (201).

7. A metal tube port roundness inspection tool according to claim 1, characterized in that: The rangefinder (7) is located between the roller (4) and the disc (1).

8. A metal tube port roundness inspection tool according to claim 2, characterized in that: The movable rod (6) maintains a certain sliding resistance with respect to the horizontal rail (5), while the sliding resistance is less than the magnetic attraction between the movable rod (6) and the convex plate (801).

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