Length measuring equipment for high-frequency welded pipe

Abstract

The invention discloses length measuring equipment for a high-frequency welded pipe, which belongs to the technical field of high-frequency welded pipe measurement and comprises a measuring table, a supporting plate is fixed at the left end of the measuring table, a laser transmitter is mounted on the side surface of the supporting plate, and a servo motor is mounted at the right end of the measuring table through a bolt; the fixing plate is fixed on the measuring table on the side of the supporting plate, and a pipe supporting mechanism is fixed on one side, far away from the supporting plate, of the fixing plate; the fixing block is installed on the outer side of the lead screw in a threaded mode, and an ultrasonic detection ring is installed above the fixing block; and the driving mechanism is arranged on the side of the fixing block, and the driving mechanism is connected with the auxiliary mechanism. According to the length measuring equipment for the high-frequency welded pipe, butt joint between the high-frequency welded pipe and the measuring mechanism can be rapidly achieved, the stability of the high-frequency welded pipe can be guaranteed in the detection process, in this way, the accuracy of measured data can be improved, and meanwhile defects on the surface of the high-frequency welded pipe can be detected in the measurement process.

Description

Technical Field

[0001] The invention relates to the technical field of high-frequency welded pipe measurement, in particular to a length measuring device for high-frequency welded pipes. Background Art

[0002] High-frequency welded pipe is a material used for welding. It has a high welding speed, a small welding heat-affected zone, and does not require cleaning of the workpiece during welding. It can weld thin-walled pipes and metal pipes. In addition, the length of high-frequency welded pipes needs to be measured after production. In order to improve the accuracy of measurement, laser measurement is currently used instead of traditional ruler measurement. For example, a high-frequency welded pipe straightness measuring device with announcement number CN203824534U has a first guide rail and a second guide rail on the platform of the frame. The parallelism and straightness between them are both 0.004mm. The first guide rail is equipped with a sensor mounting seat. The first slide has a side laser sensor and an edge laser sensor installed on the sensor mounting seat. A trigger block is installed on each side of the sensor mounting seat. The first slide is also connected to a transmission rod, which is connected to the drive device. The second slide is installed on the second guide rail. The positioning repeatability of the first and second slides is ±0.005mm and the walking parallelism is 0.006mm. The first chuck is installed on the second slide, and the second chuck is fixed on the platform. Two trigger blocks are located between the first and second chucks and can respectively trigger the first and second chucks when the first slide moves. High measurement accuracy can improve product quality. For example, a caliber detection mechanism for high-frequency welded pipe production with announcement number CN215524517U includes a detection table, the upper surface of which is fixedly provided with a support rod and an adjustment rod, the upper end of the support rod is fixedly provided with an arc-shaped placement plate, and the side surface of the adjustment rod is movably provided with a first sleeve and a second sleeve. By placing the welded pipe body on the inner wall of the arc-shaped placement plate, the caliber of the two ends of the welded pipe body is preliminarily measured by a vernier caliper. If the caliber is qualified, the position of the four movable sleeves is adjusted, and the laser pen can emit a laser, which is finally projected onto the surface of the yellow cardboard. The welded pipe body is rotated, and it is observed whether the laser irradiated on the surface of the yellow cardboard disappears during this process. The caliber of the welded pipe body can be detected by laser irradiation, and the entire pipe body can be detected, making the detection of the welded pipe body more comprehensive, greatly increasing the accuracy of the detection, and reducing the limitations of the detection using a vernier caliper alone. However, the above-mentioned measuring equipment still has the following shortcomings during actual use: 1. Traditional length measuring equipment is not fast and accurate enough to connect the high-frequency welded pipe to the measuring mechanism. The loose connection between the high-frequency welded pipe and the measuring mechanism results in inaccurate measurement data. In addition, the high-frequency welded pipe is prone to shaking or even position deviation during the detection process, which also affects the accuracy of the measurement. 2. At the same time, after the high-frequency welded pipe is produced, some high-frequency welded pipes will have defects on the surface. Traditional length measuring equipment is mostly only capable of measuring the length of the high-frequency welded pipe. It is not capable of detecting defects on the surface of the high-frequency welded pipe during the measurement process, and additional detection equipment is required later.

[0003] In response to the above problems, it is urgent to carry out innovative design based on the original length measuring equipment. Summary of the Invention

[0004] The object of the present invention is to provide a length measuring device for high-frequency welded pipes to solve the problem proposed in the background art that traditional length measuring devices are not fast and accurate enough in connecting the high-frequency welded pipes with the measuring mechanism, and are prone to causing the high-frequency welded pipes to shake or even shift in position during the detection process. Traditional length measuring devices are not capable of detecting defects on the surface of the high-frequency welded pipes during the measurement process.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a high-frequency welded pipe length measuring device, comprising a measuring platform, a support plate fixed to the left end of the measuring platform, and a laser transmitter mounted on the side of the support plate, a servo motor mounted on the right end of the measuring platform via bolts, a lead screw connected to the output shaft of the servo motor, and a receiving plate sleeved on the outer side of the lead screw; It also includes: a fixing plate fixed on the measuring platform on the side of the support plate, a pipe supporting mechanism fixed on the side of the fixing plate away from the support plate, and the pipe supporting mechanism is used to support the end of the high-frequency welded pipe body; A fixed block is threadedly mounted on the outer side of the screw rod, an ultrasonic detection ring is mounted above the fixed block, and the central axis of the ultrasonic detection ring is on the same horizontal line as the central axis of the high-frequency welded pipe body; The driving mechanism is arranged on the side of the fixing block. The driving mechanism and the auxiliary mechanism are connected to each other, and the auxiliary mechanism is connected to the middle position of the high-frequency welded pipe body.

[0006] Preferably, the pipe support mechanism includes a support column fixed on a fixed plate, and a fixing groove is provided on the side of one end of the support column close to the fixed plate, and a movable plate is movably provided on the inner side of the fixed groove. At the same time, the movable plate is inclined and the high-frequency welded pipe body can be limited by the fixed column.

[0007] Preferably, a rubber block is fixed to one end of the movable plate close to the support column, and a rubber sheet is pasted on the surface of the movable plate, and the movable plate, rubber block and rubber sheet are all distributed at equal angles on the support column. The setting of the rubber block facilitates the movable plate to automatically return to its original position after rotation.

[0008] Preferably, the receiving plate is slidably connected to the screw rod, and a first magnetic block is embedded in the side of the receiving plate close to the fixed block, and the first magnetic block and the fixed block are magnetically adsorbed, and at the same time, the bottom of the receiving plate and the fixed block are in contact with the surface of the measuring table and slide. When the fixed block moves, it can be connected to the receiving plate through the first magnetic block, driving the receiving plate to move synchronously.

[0009] Preferably, the driving mechanism includes a supporting block fixed on the side rod of the fixed block, and a second magnetic block is embedded in the inner surface of the supporting block, and the cross-sections of the supporting block and the second magnetic block are both arc-shaped structures. When the fixed block moves, the sleeve can also be driven to move synchronously through the connection between the second magnetic block and the sleeve.

[0010] Preferably, the driving mechanism also includes a connecting shaft connected to the screw rod through a pulley mechanism, and the connecting shaft is rotatably set at the edge of the measuring table, and a sleeve is sleeved on the outer side of the connecting shaft, and the lower surface of the sleeve is magnetically adsorbed to the second magnetic block, and the sleeve can connect the connecting shaft and the transmission shaft after moving.

[0011] Preferably, a transmission shaft is rotatably provided at the edge of the measuring table, and the cross-section of one end where the transmission shaft and the connecting shaft are close to each other is a rectangular structure. The cross-section of the internal cavity of the sleeve is a rectangular structure, and the length of the sleeve is greater than the distance between the transmission shaft and the connecting shaft. When the connecting shaft rotates, the transmission shaft can be driven to rotate synchronously through the sleeve.

[0012] Preferably, the end of the transmission shaft is connected to one end of the movable shaft through a pulley mechanism, and a gear is fixedly sleeved on one end of the movable shaft, and the two movable shafts are meshed with two gears for transmission. At the same time, the movable shaft rotates on a plate structure set on the measuring table, and through two meshing gears, it can drive the two boxes of movable shafts and the connecting rod to rotate in opposite directions.

[0013] Preferably, the auxiliary mechanism includes a connecting rod fixed to the other end of the movable shaft, and the connecting rod and the movable shaft are perpendicular to each other, and a support plate is fixed to the end of the connecting rod away from the movable shaft, through which the high-frequency welded pipe body can be temporarily supported before measurement.

[0014] Preferably, the cross-section of the support plate is an arc-shaped structure, and balls are embedded on the inner side of the support plate, and the two sets of connecting rods and the support plate rotate in opposite directions. When the high-frequency welded pipe body is pushed to move, the balls can improve smoothness.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the length measuring device of the high-frequency welded pipe can quickly achieve the docking between the high-frequency welded pipe and the measuring mechanism, and can ensure the stability of the high-frequency welded pipe during the detection process, thereby improving the accuracy of the measurement data. At the same time, defects on the surface of the high-frequency welded pipe can also be detected during the measurement process. The specific contents are as follows: 1. Since the fixed block and the receiving plate are adsorbed by the first magnetic block, the receiving plate can be driven to move synchronously when the fixed block moves. After the receiving plate moves a certain distance, it pushes the high-frequency welded pipe body to move on the support column. After moving on the support column, it can contact the movable plate, and the rubber sheet is used to ensure the stability of the position of the high-frequency welded pipe body, which is convenient for subsequent length measurement. When the high-frequency welded pipe body is separated from the movable plate, the elasticity of the rubber block can drive the movable plate to return to the inclined state. 2. When the fixed block moves, it is driven to move synchronously by the adsorption of the second magnetic block and the sleeve. When the sleeve moves to the limit, it is limited by the cylinder on the transmission shaft, so that the sleeve can be placed between the connecting shaft and the transmission shaft, while the fixed block can continue to move. In this way, the two movable shafts can rotate in opposite directions through the meshing transmission of the pulley mechanism and the gear. 3. When the receiving plate does not push the high-frequency welded pipe body to a fixed position, the supporting plate provides temporary support for the high-frequency welded pipe body, and when the high-frequency welded pipe body is pushed, the ball bearings can be driven to roll, thereby improving the smoothness of movement. As the fixed block continues to move, the movable shaft and the connecting rod can be driven to rotate, and the supporting plate can be driven to rotate and separate from the high-frequency welded pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the supporting plate structure of the present invention; Figure 3 This is a schematic diagram of the structure of the ultrasonic detection ring of the present invention; Figure 4 This is a schematic diagram of the structure after the movable shaft of the present invention rotates; Figure 5 This is a schematic diagram of the support column structure of the present invention; Figure 6 This is a schematic diagram of the sleeve structure of the present invention; Figure 7 This is a schematic diagram of the separation structure of the fixing block and the receiving plate of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the sleeve of the present invention; Figure 9 It is a schematic diagram of the transmission shaft structure of the present invention.

[0017] In the figure: 1. Measuring table; 2. Support plate; 3. Laser transmitter; 4. Servo motor; 5. Screw; 6. Receiving plate; 61. First magnetic block; 7. Fixed plate; 8. Support column; 81. Fixed groove; 82. Movable plate; 83. Rubber block; 84. Rubber sheet; 9. Fixed block; 10. Ultrasonic detection ring; 11. Support block; 111. Second magnetic block; 12. Connecting shaft; 13. Sleeve; 14. Transmission shaft; 15. Movable shaft; 16. Gear; 17. Connecting rod; 18. Support plate; 181. Ball; 19. High-frequency welded pipe body. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0019] See also Figures 1-9 , the present invention provides the following technical solutions: Embodiment 1: In order to solve the problems existing in the prior art, this embodiment adopts the following technical solutions. The length measuring equipment of the high-frequency welded pipe includes a measuring table 1, a support plate 2 is fixed to the left end of the measuring table 1, and a laser emitter 3 is installed on the side of the support plate 2, a servo motor 4 is installed on the right end of the measuring table 1 by bolts, and the output shaft of the servo motor 4 is connected to a screw rod 5, and a receiving plate 6 is sleeved on the outer side of the screw rod 5; it also includes: a fixing plate 7, which is fixed on the measuring table 1 on the side of the support plate 2, and a support pipe mechanism is fixed on the side of the fixing plate 7 away from the support plate 2, and the support pipe mechanism is used to support the end of the high-frequency welded pipe body 19; a fixing block 9, which is threadedly installed on the outer side of the screw rod 5, and an ultrasonic detection ring 10 is installed above the fixing block 9, and the central axis of the ultrasonic detection ring 10 is on the same horizontal line as the central axis of the high-frequency welded pipe body 19; a driving mechanism, which is arranged on the side of the fixing block 9, the driving mechanism and the auxiliary mechanism are connected to each other, and the auxiliary mechanism is connected to the middle position of the high-frequency welded pipe body 19.

[0020] The existing length measuring equipment is easy to cause the high-frequency welded pipe body 19 to shake or even shift in position during the measurement process, which will also affect the accuracy of the measurement. Figure 1 、 Figure 3-Figure 5 and Figure 7As shown, the support tube mechanism includes a support column 8 fixed on the fixed plate 7, and a fixing groove 81 is opened on the side of the end of the support column 8 close to the fixed plate 7, and a movable plate 82 is movably provided on the inner side of the fixed groove 81, and the movable plate 82 is inclined; a rubber block 83 is fixed to the end of the movable plate 82 close to the support column 8, and a rubber sheet 84 is pasted on the surface of the movable plate 82, and the movable plate 82, the rubber block 83 and the rubber sheet 84 are all distributed at equal angles on the support column 8; the receiving plate 6 is slidably connected to the screw rod 5, and the receiving plate 6 is close to the support column 8. A first magnetic block 61 is embedded in one side of the fixed block 9, and the first magnetic block 61 and the fixed block 9 are magnetically adsorbed. At the same time, the bottom of the receiving plate 6 and the fixed block 9 are in contact with the surface of the measuring table 1 and slide. First, the servo motor 4 drives the screw rod 5 to rotate, and drives it to move through the threaded transmission of the screw rod 5 and the fixed block 9. Since the fixed block 9 and the receiving plate 6 are adsorbed by the first magnetic block 61, the receiving plate 6 can be driven to move synchronously when the fixed block 9 moves. After the receiving plate 6 moves a certain distance, it can contact the high-frequency welded pipe body 19 and push it. The high-frequency welded pipe body 19 moves on the support column 8. When the high-frequency welded pipe body 19 moves to contact with the fixed plate 7, the receiving plate 6 is blocked and stops moving, while the fixed block 9 can continue to move and separate from the receiving plate 6. After the high-frequency welded pipe body 19 moves on the support column 8, it can contact the movable plate 82 and push the movable plate 82 to rotate and be stuck in the fixed groove 81. The rubber sheet 84 on the movable plate 82 is used to ensure the stability of the position of the high-frequency welded pipe body 19, which is convenient for subsequent length measurement. The high-frequency welded pipe body 19 is separated from the support column 8. After separation, the movable plate 82 is driven back to the inclined state by the resilience of the rubber block 83, which is convenient for fixing the subsequent high-frequency welded pipe body 19. In this way, the subsequent laser emitter 3 runs to emit the laser to the position of the receiving plate 6 to measure the length of the high-frequency welded pipe body 19. When the measurement is completed, the servo motor 4 drives the fixed block 9 in the reverse direction. When it moves to the fixed block 9 and the first magnetic block 61, it can drive the synchronous movement of the receiving plate 6, driving the receiving plate 6 away from the high-frequency welded pipe body 19, making it convenient to remove the measured high-frequency welded pipe body 19.

[0021] Example 2: After the high-frequency welded pipe body 19 is produced, some of the high-frequency welded pipe bodies 19 will have defects on their surfaces. However, most traditional length measuring devices are only capable of measuring the length of the high-frequency welded pipe body 19. During the measurement process, they are not capable of detecting defects on the surface of the high-frequency welded pipe body 19. Additional detection equipment is required. Therefore, this embodiment adopts the following technical solutions, such as Figure 3-Figure 4 and Figure 6-Figure 9As shown, the driving mechanism includes a supporting block 11 fixed to the side rod of the fixed block 9, and the inner surface of the supporting block 11 is embedded with a second magnetic block 111, and the cross-sections of the supporting block 11 and the second magnetic block 111 are both arc-shaped structures; the driving mechanism also includes a connecting shaft 12 connected to the screw rod 5 through a pulley mechanism, and the connecting shaft 12 is rotatably set at the edge of the measuring table 1, and the outer side of the connecting shaft 12 is provided with a sleeve 13, and the lower surface of the sleeve 13 is magnetically adsorbed with the second magnetic block 111; a transmission is also rotatably set at the edge of the measuring table 1 The cross section of the end where the transmission shaft 14 and the connecting shaft 12 are close to each other is a rectangular structure, the cross section of the internal cavity of the sleeve 13 is a rectangular structure, and the length of the sleeve 13 is greater than the distance between the transmission shaft 14 and the connecting shaft 12; the end of the transmission shaft 14 is connected to one end of the movable shaft 15 through a pulley mechanism, and one end of the movable shaft 15 is fixedly sleeved with a gear 16, and the two movable shafts 15 are meshed with each other through two gears 16. At the same time, the movable shaft 15 is rotated on the plate structure on the measuring table 1; when the fixed block 9 moves, it drives the ultrasonic detection ring 10 moves synchronously, so that the ultrasonic detection ring 10 can be set on the outside of the high-frequency welded pipe body 19, and detect the defects on the surface of the high-frequency welded pipe body 19 by moving, which will not affect the subsequent length measurement. When the fixed block 9 moves, the supporting block 11 moves synchronously. When moving, the sleeve 13 moves synchronously through the adsorption of the second magnetic block 111 and the sleeve 13. The sleeve 13 slides on the connecting shaft 12 and can be connected to the transmission shaft 14 after moving one end distance. When the sleeve 13 moves to the limit, it is affected by the cylindrical body on the transmission shaft 14. The limit allows the sleeve 13 to be sleeved on the end close to the connecting shaft 12 and the transmission shaft 14. In this way, when the screw rod 5 rotates, the connecting shaft 12 can be driven to rotate through the pulley mechanism, and then the transmission shaft 14 can be driven to rotate synchronously through the sleeve 13. The transmission shaft 14 drives the movable shaft 15 to rotate through another pulley mechanism. The two movable shafts 15 rotate in opposite directions through two meshing gears 16. When the detection is completed, the fixed block 9 moves in the opposite direction, which can drive the second magnetic block 111 to be adsorbed with the sleeve 13 again, driving the sleeve 13 to separate from the transmission shaft 14.

[0022] Example 3: The existing length measuring equipment is not fast and accurate enough to connect the high-frequency welded pipe body 19 with the measuring mechanism. The high-frequency welded pipe body 19 and the measuring mechanism are not tightly connected, resulting in inaccurate measurement data. Therefore, this embodiment adopts the following technical solutions, such as Figure 1-Figure 2 and Figure 4As shown, the auxiliary mechanism includes a connecting rod 17 fixed to the other end of the movable shaft 15, and the connecting rod 17 and the movable shaft 15 are perpendicular to each other, and a supporting plate 18 is fixed to the end of the connecting rod 17 away from the movable shaft 15; the cross section of the supporting plate 18 is an arc-shaped structure, and a ball 181 is embedded in the inner side of the supporting plate 18, and the two groups of connecting rods 17 and the supporting plate 18 rotate in opposite directions; when the movable shaft 15 rotates, the supporting plate 18 is driven to rotate synchronously through the connecting rod 17, so that the high-frequency welding is promoted on the receiving plate 6. After the tube body 19 is stably connected to the support column 8, the support plate 18 can release the support for the high-frequency welded tube body 19, which is convenient for subsequent defect detection. When the receiving plate 6 does not push the high-frequency welded tube body 19 to be fixed, the support plate 18 has a temporary support effect on the high-frequency welded tube body 19, and when pushing the high-frequency welded tube body 19, it can drive the ball 181 to roll, which can improve the smoothness of movement. As the fixing block 9 continues to move, the support plate 18 can be driven to separate from the high-frequency welded tube body 19.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-frequency welded pipe length measuring device, comprising a measuring platform (1), a support plate (2) being fixed to the left end of the measuring platform (1), and a laser transmitter (3) being installed on the side of the support plate (2), a servo motor (4) being installed on the right end of the measuring platform (1) via bolts, a screw rod (5) being connected to the output shaft of the servo motor (4), and a receiving plate (6) being sleeved on the outer side of the screw rod (5); It is characterized in that Also includes: A fixed plate (7) is fixed on the measuring table (1) on the side of the support plate (2), and a pipe support mechanism is fixed on the side of the fixed plate (7) away from the support plate (2), and the pipe support mechanism is used to support the end of the high-frequency welded pipe body (19); A fixed block (9) is threadedly mounted on the outside of the screw rod (5); an ultrasonic detection ring (10) is mounted above the fixed block (9); and the central axis of the ultrasonic detection ring (10) is on the same horizontal line as the central axis of the high-frequency welded pipe body (19); The driving mechanism is arranged on the side of the fixed block (9), the driving mechanism and the auxiliary mechanism are connected to each other, and the auxiliary mechanism is connected to the middle position of the high-frequency welded pipe body (19).

2. The high-frequency welded pipe length measuring device according to claim 1, characterized in that: The pipe support mechanism includes a support column (8) fixed on a fixed plate (7), and a fixing groove (81) is provided on the side surface of one end of the support column (8) close to the fixed plate (7), and a movable plate (82) is movably provided inside the fixed groove (81), and the movable plate (82) is inclined.

3. The high-frequency welded pipe length measuring device according to claim 2, characterized in that: A rubber block (83) is fixed to one end of the movable plate (82) close to the support column (8), and a rubber sheet (84) is adhered to the surface of the movable plate (82), and the movable plate (82), the rubber block (83) and the rubber sheet (84) are all distributed at equal angles on the support column (8).

4. The high-frequency welded pipe length measuring device according to claim 1, characterized in that: The receiving plate (6) is slidably connected to the screw rod (5), and a first magnetic block (61) is embedded in a side of the receiving plate (6) close to the fixed block (9), and the first magnetic block (61) and the fixed block (9) are magnetically adsorbed, and the bottoms of the receiving plate (6) and the fixed block (9) are both in contact with and slide on the surface of the measuring table (1).

5. The high-frequency welded pipe length measuring device according to claim 1, characterized in that: The driving mechanism comprises a supporting block (11) fixed on a side rod of a fixed block (9), and a second magnetic block (111) is embedded in the inner surface of the supporting block (11), and the cross sections of the supporting block (11) and the second magnetic block (111) are both arc-shaped structures.

6. The high-frequency welded pipe length measuring device according to claim 5, characterized in that: The driving mechanism further comprises a connecting shaft (12) connected to the screw rod (5) via a pulley mechanism, and the connecting shaft (12) is rotatably arranged at the edge of the measuring platform (1), and a sleeve (13) is sleeved on the outer side of the connecting shaft (12), and the lower surface of the sleeve (13) is magnetically attracted to the second magnetic block (111).

7. The high-frequency welded pipe length measuring device according to claim 6, characterized in that: A transmission shaft (14) is rotatably provided at the edge of the measuring platform (1), and the cross-section of one end where the transmission shaft (14) and the connecting shaft (12) are close to each other is a rectangular structure. The cross-section of the internal cavity of the sleeve (13) is a rectangular structure, and the length of the sleeve (13) is greater than the distance between the transmission shaft (14) and the connecting shaft (12).

8. The high-frequency welded pipe length measuring device according to claim 7, characterized in that: The end of the transmission shaft (14) is connected to one end of the movable shaft (15) through a pulley mechanism, and a gear (16) is fixedly sleeved on one end of the movable shaft (15), and the two movable shafts (15) are meshed and driven by the two gears (16), while the movable shafts (15) are rotatably arranged on a plate structure on the measuring table (1).

9. The high-frequency welded pipe length measuring device according to claim 8, characterized in that: The auxiliary mechanism includes a connecting rod (17) fixed to the other end of the movable shaft (15), wherein the connecting rod (17) and the movable shaft (15) are perpendicular to each other, and a supporting plate (18) is fixed to the end of the connecting rod (17) away from the movable shaft (15).

10. The high-frequency welded pipe length measuring device according to claim 9, characterized in that: The cross section of the supporting plate (18) is an arc-shaped structure, and a ball (181) is embedded in the inner side of the supporting plate (18), and the two groups of connecting rods (17) and the supporting plate (18) rotate in opposite directions.

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