High-precision straightness detection device for steel pipes

Abstract

The utility model discloses a high-precision straightness detection device for steel pipes, comprising a support, a motor is fixed on the side of the support, a three-jaw chuck is fixed on the driving shaft end of the motor, a steel pipe is clamped and fixed on the inner side of the three-jaw chuck, a support rod is fixed on the lower end of the support, an arch seat is sleeved on the outer surface of the support rod, a cylinder is fixed on the surface of the arch seat, an arch frame is fixed on the end face of the driving rod of the cylinder, a positioning roller is arranged on the inner surface of the lower end of the arch frame, a triangular ring groove is arranged on the surface of the positioning roller, and the triangular ring groove is supported on the lower surface of the steel pipe, a support plate is fixed on the outer end of the support, a positioning groove is arranged on the surface of the support plate, a laser lamp head is slidably installed in the positioning groove, the three-jaw chuck is driven to rotate by the motor, the steel pipe is supported on the surface of the positioning roller for rotation, and the adjustable laser lamp head is irradiated, and the bending of the steel pipe can be obtained by blocking the light when the steel pipe rotates.

Description

Technical Field

[0001] The utility model relates to the field of high-precision straightness detection devices for steel pipes, and more specifically, to a high-precision straightness detection device for steel pipes. Background Art

[0002] Steel pipe is a common metal material, often used for the transportation of liquids, gases and other substances, especially in chemical plants. In the production and manufacturing of some precision steel pipes and bars, it is necessary to test their straightness. As one of the quantitative indicators of steel pipe and bar quality, the detection method and detection device directly affect the production efficiency and detection accuracy.

[0003] Traditional inspection methods mainly rely on manual inspection, but manual inspection is inefficient, requires a lot of manual operation, is time-consuming and labor-intensive, and has low inspection accuracy. For example, Chinese patent CN212179782U discloses a straightness inspection device for steel pipe production, which includes a base plate, two fixed blocks symmetrically fixedly connected to the top of the base plate on both sides, the tops of the two fixed blocks are each provided with an arc-shaped groove, and the same steel pipe is fixedly clamped in the two arc-shaped grooves, the two fixed blocks are fixedly connected to the same rectangular frame on the sides close to each other, and a vertical plate is fixedly connected to the top side of the base plate, and the two vertical plates are symmetrically fixedly connected to two connecting blocks on the sides close to the steel pipe.

[0004] The above solution activates the lead screw motor to drive the telescopic rod to move on the surface of the steel pipe, and by driving the brush to move and cooperate with the drawing board, it can effectively detect the straightness of the steel pipe. However, when using the above solution for straightness detection, the steel pipe cannot move after being clamped by the arc grooves on both sides. The brush can only detect the straightness of one side of the steel pipe. When the straightness of the other side needs to be detected, the steel pipe needs to be separated from the fixed block, rotated, and re-clamped before the other side can be detected. This results in incomplete and inefficient detection of the steel pipe straightness.

[0005] In current technical patents, such as CN214372207U, a seamless steel pipe straightness detection device is disclosed, which aims to solve the problem that it is impossible to detect the straightness of each surface of the steel pipe conveniently and quickly, which affects the accuracy of the detection. The key points of its technical solution are: including a locking device, the locking device includes a frame and a fixed block, the fixed block is rotatably connected to the frame, a slot is provided on the fixed block, a rotating block is provided in the slot, a cavity is provided in the rotating block, an electric push rod is provided in the cavity, the other end of the electric push rod is fixedly connected to a moving block, a moving slot is provided in the rotating block, and a receiving slot is provided in the rotating block. The seamless steel pipe straightness detection device of the utility model can drive the steel pipe to rotate by rotating the rotating block in the slot, so that different surfaces of the steel pipe can correspond to the position of the paintbrush, which facilitates the comprehensive detection of the straightness of the steel pipe and makes the straightness detection more convenient and accurate.

[0006] The detection mechanism in the above patent is complicated, and the length and thickness of the steel pipes are different. The mechanical detection is not precise and the detection is not convenient. Utility Model Content

[0007] In response to the problems existing in the prior art, the purpose of the utility model is to provide a high-precision straightness detection device for steel pipes. The three-jaw chuck is driven by a motor to rotate, and the steel pipe is supported on the surface of the positioning roller to rotate. The adjustable laser lamp head is used to illuminate the steel pipe. The light is blocked when the steel pipe rotates to determine the bending of the steel pipe.

[0008] In order to solve the above problems, the present invention adopts the following technical solutions.

[0009] The high-precision straightness detection device for steel pipes includes a support, a motor is fixed on the side of the support, a three-jaw chuck is fixed on the driving shaft end of the motor, a steel pipe is clamped and fixed on the inner side of the three-jaw chuck, a support rod is fixed on the lower end of the support, the outer surface of the support rod is sleeved with an arch seat, a cylinder is fixed on the surface of the arch seat, an arch frame is fixed on the end face of the driving rod of the cylinder, a positioning roller is provided on the inner surface of the lower end of the arch frame, a triangular ring groove is provided on the surface of the positioning roller, and the triangular ring groove is supported on the lower surface of the steel pipe, the outer end of the support is fixed with a support plate, a positioning groove is provided on the surface of the support plate, a laser lamp head is slidably installed in the positioning groove, the three-jaw chuck is driven to rotate by the motor, the steel pipe is supported on the surface of the positioning roller and rotates, and is irradiated by an adjustable laser lamp head. The bending of the steel pipe can be determined by blocking the light when the steel pipe rotates.

[0010] Furthermore, the outer surface of the laser lamp head is slidably connected to the inner surface of the positioning groove, and a positioning convex ring is provided on one side of the outer surface of the laser lamp head, and the positioning convex ring is attached to the outer surface of one side of the support plate.

[0011] Furthermore, the outer surface of the other side of the laser lamp head is connected to a nut through a thread, and the nut is locked and fixed to the outer surface of the other side of the support plate.

[0012] Furthermore, a through hole is provided at the bottom of the arch seat, which is sleeved on the outer surface of the support rod. The inner surface of the arch seat is connected with a bolt through a thread, and the bolt is locked and fixed to the outer surface of the support rod.

[0013] Furthermore, the support plate is fixed to the outer end surface of the support by screws, and two groups of screws fix the support plate.

[0014] Furthermore, the surface of the positioning roller is provided with a triangular ring groove, and the outer surface of the positioning roller is provided with a smooth polished surface.

[0015] Furthermore, the outer surfaces of both sides of the arch frame are slidably fitted on the inner surface of the arch seat.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The motor drives the three-jaw chuck to rotate, and the steel pipe is supported on the surface of the positioning roller to rotate. The adjustable laser lamp head is used to illuminate the steel pipe. When the steel pipe rotates, the light is blocked to determine the bending of the steel pipe.

[0018] The outer surface of the laser lamp head is slidably connected to the inner surface of the positioning groove. A positioning convex ring is provided on one side of the outer surface of the laser lamp head. The positioning convex ring is attached to the outer surface of one side of the support plate to facilitate fitting and positioning.

[0019] The outer surface of the other side of the laser lamp head is connected with a nut through a thread. The nut is locked and fixed to the outer surface of the other side of the support plate, which is convenient for locking and fixing. The installation of the laser lamp head is convenient. The laser lamp head can be moved up and down to adjust the position. The light irradiation position can be adjusted to be close to the surface of the steel pipe to form a straight line. If a certain section of the steel pipe blocks the light from passing through, the bending of the steel pipe can be detected. The detection is convenient and accurate.

[0020] The bottom of the arch seat is provided with an insertion opening, which is sleeved on the outer surface of the support rod. The inner surface of the arch seat is connected with a bolt through a thread, and the bolt is locked and fixed on the outer surface of the support rod, so as to facilitate the movement of the locked arch seat, and the arch seat is supported and positioned according to the moving position of the steel pipe;

[0021] The support plate is fixed to the outer end surface of the support by screws. Two sets of screws fix the support plate, which is easy to install;

[0022] The surface of the positioning roller is provided with a triangular ring groove, and the outer surface of the positioning roller is provided with a smooth polished surface, so the supporting steel pipe will not wear the surface;

[0023] The outer surfaces of both sides of the arch frame are slidably fitted on the inner surface of the arch seat. When the arch frame is moved up and down, the arch frame can fit and slide, and the sliding support is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a top view of the overall structure of the utility model;

[0026] Figure 3 This is a diagram showing the installation relationship between the support plate and the laser lamp head of the present invention;

[0027] Figure 4 It is a side view of the positioning roller and arch frame of the utility model.

[0028] Description of the numbers in the figure:

[0029] 1 support, 2 motor, 3 three-jaw chuck, 4 steel pipe, 5 support rod, 6 arch seat, 7 cylinder, 8 arch frame, 9 positioning roller, 10 support plate, 11 positioning groove, 12 laser lamp head, 13 positioning convex ring, 14 nut, 100 bolt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0031] See also Figure 1-4 , a high-precision straightness detection device for steel pipes, including a support 1, a motor 2 is fixed on the side of the support 1, a three-jaw chuck 3 is fixed to the driving shaft end of the motor 2, a steel pipe 4 is clamped and fixed inside the three-jaw chuck 3 (the three-jaw chuck 3 is a fastening device in the prior art, and the three claws of the three-jaw chuck 3 clamp and fix the steel pipe 4, which can be clamped stably and firmly), a support rod 5 is fixed to the lower end of the support 1, an arch seat 6 is sleeved on the outer surface of the support rod 5, a cylinder 7 is fixed on the surface of the arch seat 6, an arch frame 8 is fixed to the end surface of the driving rod of the cylinder 7, and the lower end of the arch frame 8 A positioning roller 9 is provided on the inner surface, and a triangular ring groove is provided on the surface of the positioning roller 9. The triangular ring groove is supported on the lower surface of the steel pipe 4. The outer end of the support 1 is fixed to the support plate 10. A positioning groove 11 is provided on the surface of the support plate 10. A laser lamp head 12 is slidably installed in the positioning groove 11. The outer surface of the laser lamp head 12 is slidably connected to the inner surface of the positioning groove 11. A positioning convex ring 13 is provided on the outer surface of one side of the laser lamp head 12. The positioning convex ring 13 is attached to the outer surface of one side of the support plate 10. The positioning convex ring 13 is attached to the outer surface of one side of the support plate to facilitate fitting and positioning;

[0032] The outer surface of the other side of the laser lamp head 12 is connected with a nut 14 through a thread, and the nut 14 is locked and fixed to the outer surface of the other side of the support plate 10, which is convenient for locking and fixing. The installation of the laser lamp head 12 is convenient, and the laser lamp head 12 can be moved up and down to adjust its position, and adjusted to be close to the upper end surface of the steel pipe 4. The light irradiation position can be adjusted to be close to the surface of the steel pipe 4. The light forms a straight line on the surface of the steel pipe 4. If a certain section of the steel pipe 4 blocks the light from passing through, the bending of the steel pipe 4 can be detected (and the motor 2 drives the steel pipe 4 to rotate and turn over, so that the whole surface can be detected). The detection is convenient and accurate (during the detection, the cylinder 7 drives the arch frame 8 to rise, driving the positioning roller 9 to support the steel pipe 4, which can fit the supporting steel pipe 4);

[0033] The bottom of the arch seat 6 is provided with an insertion opening, which is sleeved on the outer surface of the support rod 5. The inner surface of the arch seat 6 is connected with a bolt 100 through a thread, and the bolt 100 is locked and fixed to the outer surface of the support rod 5. The position of the arch seat 6 can be slidably adjusted to adjust the support position of the steel pipe 4, and the support point position can be adjusted according to the length of the steel pipe 4;

[0034] The support plate 10 is fixed to the outer end surface of the support 1 by screws. Two sets of screws fix the support plate 10, which is easy to install;

[0035] The surface of the positioning roller 9 is provided with a triangular ring groove, and the outer surface of the positioning roller 9 is provided with a smooth polished surface, which can fit the steel pipe 4 support and will not wear when fitting and rotating;

[0036] The outer surfaces of both sides of the arch frame 8 are slidably fitted on the inner surface of the arch seat 6, and the sliding and lifting are stable.

[0037] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A high-precision straightness detection device for a steel pipe, comprising a support (1), characterized in that: The side surface of the support (1) is fixed with a motor (2), the driving shaft end of the motor (2) is fixed with a three-jaw chuck (3), the inner side of the three-jaw chuck (3) clamps and fixes a steel pipe (4), the lower end of the support (1) is fixed with a support rod (5), the outer surface of the support rod (5) is sleeved with an arch seat (6), the surface of the arch seat (6) is fixed with a cylinder (7), the end surface of the driving rod of the cylinder (7) is fixed with an arch frame (8), the lower end inner surface of the arch frame (8) is provided with a positioning roller (9), the surface of the positioning roller (9) is provided with a triangular ring groove, and the triangular ring groove is supported on the lower surface of the steel pipe (4), the outer end of the support (1) is fixed with a support plate (10), the surface of the support plate (10) is provided with a positioning groove (11), and a laser lamp head (12) is slidably mounted in the positioning groove (11).

2. The high-precision straightness detection device for steel pipes according to claim 1 is characterized in that: The outer surface of the laser lamp head (12) is slidably connected to the inner surface of the positioning groove (11), and a positioning convex ring (13) is provided on one side outer surface of the laser lamp head (12), and the positioning convex ring (13) is attached to one side outer surface of the support plate (10).

3. The high-precision straightness detection device for steel pipes according to claim 2, characterized in that: The outer surface of the other side of the laser lamp head (12) is threadedly connected to a nut (14), and the nut (14) is locked and fixed to the outer surface of the other side of the support plate (10).

4. The high-precision straightness detection device for steel pipes according to claim 1, characterized in that: The bottom of the arch seat (6) is provided with an insertion opening, which is sleeved on the outer surface of the support rod (5); the inner surface of the arch seat (6) is connected with a bolt (100) through a thread, and the bolt (100) is locked and fixed on the outer surface of the support rod (5).

5. The high-precision straightness detection device for steel pipes according to claim 1, characterized in that: The support plate (10) is fixed to the outer end surface of the support (1) by means of screws, and two groups of screws fix the support plate (10).

6. The high-precision straightness detection device for steel pipes according to claim 1, characterized in that: Furthermore, the outer surface of the positioning roller (9) is provided with a smooth polished surface.

7. The high-precision straightness detection device for steel pipes according to claim 1, characterized in that: The outer surfaces of both sides of the arch frame (8) are slidably fitted on the inner surface of the arch seat (6).

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