A measuring device for measuring the internal and external profile of a pipe

Abstract

The application belongs to the technical field of pipe production and measuring equipment, and proposes a measuring device for measuring the inner and outer profiles of a pipe, which comprises a measuring table, a support, a 3D scanner and an X-axis adjusting motor. A support table is arranged in the middle of the measuring table and is controlled to overturn by a Y-axis adjusting motor. Multiple clamping mechanisms are arranged on the side surface of the support table and complete clamping actions by being controlled by a transmission rope, a spring, a winding rope rod and a clamping drive motor. A square lifting opening is arranged in the middle of the support table, a lifting table is arranged in the lifting opening, and the lifting table completes lifting actions by being controlled by a lifting cylinder, a transmission plate and a lifting drive cylinder. A rotating opening is arranged in the center of the lifting table, a rotating table is arranged in the rotating opening, and the rotating table completes rotating actions by being controlled by a rotating shaft, a gear set and a Z-axis adjusting motor. The application can automatically turn over the test piece, has strong comprehensive measuring capability, has high automation degree and is conducive to improving measuring efficiency, and is suitable for large-scale promotion.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pipe production and measuring equipment, and particularly relates to a measuring device for measuring the inner and outer profiles of a pipe. BACKGROUND

[0002] Pipe fittings are collectively referred to as components in a piping system that serve the functions of connection, control, redirection, flow distribution, sealing, and support. Pipe fittings can be classified by connection method as follows: welded pipe fittings, threaded pipe fittings, necked butt-welded steel pipe flanges, sleeve pipe fittings, clamp pipe fittings, socket pipe fittings, adhesive pipe fittings, hot melt pipe fittings, curved and elastic double-melt pipe fittings, and rubber ring connection type pipe fittings. Traditional methods of measuring pipe fittings involve direct contact measurement with tools, which is inefficient. 3D laser scanning measurement technology is a non-contact measurement technology that has the advantages of high measurement accuracy, high measurement efficiency, avoidance of contact damage, wide measurement range, and high levels of digitization and visualization. Many workshops have begun to use 3D laser scanning equipment to complete measurement tasks.

[0003] Currently, 3D laser scanning equipment generally includes a projection unit and at least two camera units, such as the dual-projection 3D scanning camera disclosed in existing patent CN219181569U, and the structured light projection three-dimensional measurement system and method with automatic shadow compensation disclosed in existing patent CN201811230078.7. Although such 3D scanning measurement equipment can complete 3D measurement, it has certain deficiencies in terms of angle adjustment, as the projection direction needs to be adjusted by staff or the placement angle of the test piece needs to be manually adjusted by workers, and its automatic performance needs to be improved.

[0004] Existing patent CN202010641003.9 discloses a three-dimensional measurement device and method based on binocular camera imaging and structured light technology. The device has lifting and rotating adjustment functions, which can improve the comprehensiveness of measurement, but it lacks the function of turning over the pipe fittings, especially the hidden nature of the internal profile of some pipe fittings in different directions, which can result in insufficient data to support the complete data of the test piece. Therefore, workers need to participate in the measurement process at all times, and even the number of measurements of individual pieces needs to be increased to further improve the comprehensiveness of measurement. SUMMARY

[0005] The present application addresses the technical problems of the above-mentioned 3D measurement equipment and proposes a measuring device for measuring the inner and outer profiles of a pipe, which has reasonable design, can automatically turn over the test piece, has strong comprehensive measurement capability, high automation degree, and is conducive to improving measurement efficiency.

[0006] In order to achieve the above object, the technical scheme adopted by the present application is as follows: the present application provides a measuring device for measuring the inner and outer profiles of pipe fittings, comprising a measuring table, a support is arranged on the top of the measuring table and close to the rear side thereof, a 3D scanner is arranged on the support, the 3D scanner comprises a projection unit and a camera unit, T-shaped flanges are arranged at both ends of the 3D scanner, a horizontal adjusting shaft is arranged at the center of the T-shaped flanges, the adjusting shaft is supported by the support, an X-axis adjusting motor is arranged at one end of the adjusting shaft, a mounting port is arranged in the middle of the measuring table, a support table is arranged in the mounting port, a pair of overturning shafts are arranged on the side surface of the support table, a Y-axis adjusting motor is arranged at the end of the overturning shaft, a plurality of flower ports are arranged on the side surface of the support table, a key-shaped hole inclined upward is arranged in the flower port, a clamping mechanism movably arranged along the flower port and the key-shaped hole is arranged in the flower port, all the clamping mechanisms are connected through a transmission rope, a spring is arranged between adjacent clamping mechanisms and sleeved on the transmission rope, a winding rope rod is arranged at the power end of the transmission rope, the winding rope rod is arranged below the support table and connected with the measuring table, a clamping driving motor is arranged at one end of the winding rope rod, a square lifting port is arranged in the middle of the support table, a lifting table is arranged in the lifting port, a lifting cylinder is arranged at the bottom of the lifting table, a transmission plate is arranged at the bottom of the lifting cylinder, lifting driving cylinders are arranged at both ends of the transmission plate, a rotating port is arranged at the center of the lifting table, a rotating table is arranged in the rotating port, a rotating shaft is arranged at the bottom of the rotating table, a gear set is arranged at the bottom of the rotating shaft, and a Z-axis adjusting motor is arranged at the power input end of the gear set.

[0007] As a preferred, the clamping mechanism comprises a top clamping plate matched with the shape of the flower port, a vertical extension edge plate is arranged at one end of the top clamping plate away from the center of the support table, a rib clamping plate is arranged at the transition position of the edge plate and the top clamping plate, a sliding shaft head matched with the key-shaped hole is arranged on the side surface of the edge plate, two transmission pipes spaced apart upward and downward are arranged on the outer side of the edge plate, the transmission pipes are used to connect the transmission rope, a bottom clamping plate is arranged on the inner side of the edge plate and close to the bottom thereof, the bottom clamping plate extends in the sliding direction of the clamping mechanism and the radial length thereof is greater than the radial length of the top clamping plate.

[0008] As a preferred, the bottom of the support table is provided with a plurality of top rods corresponding to the clamping mechanism, the bottom surface of the top rod is inclined and in contact with the extension surface of the bottom clamping plate, and the bottom clamping plate is a flexible plate.

[0009] As a preferred, the width of the edge plate is less than the minimum width of the flower port.

[0010] As a preferred, a pair of fin plates are arranged on both sides of the bottom of the flower port, and the key-shaped hole is arranged on the fin plate.

[0011] Preferably, the number of the clamping mechanisms is 12, and they are evenly divided into four groups, each group corresponding to one side of the lifting hole.

[0012] Preferably, the lifting platform is a groove structure with an opening downward, and the lifting platform is provided with a corresponding radiation hole for each clamping mechanism, and the radiation hole is used for the bottom clamping plate to slide out of the support surface of the lifting platform from bottom to top.

[0013] Preferably, the side of the support platform is provided with a pair of hollow fork rods, the fork rods are provided with a transmission hole for the transmission of the transmission rope, and one of the fork rods is in transmission connection with the Y-axis adjusting motor.

[0014] Preferably, the gear set includes a driven gear, the driven gear is arranged below the lifting cylinder, the lower side of the driven gear is provided with a support spring connected with the inner bottom of the measuring platform, the transmission side of the driven gear is provided with a transition gear column, the height of the transition gear column is greater than the driving stroke of the lifting driving cylinder, the transmission side of the transition gear column is provided with a driving gear engaged therewith, and the power input end of the driving gear is connected with the Z-axis adjusting motor.

[0015] Preferably, the bracket is provided with two pairs of bearing seats, and the inside of the bearing seat is provided with a ball bearing matched with the adjusting shaft.

[0016] Compared with the prior art, the advantages and positive effects of the present application are:

[0017] The measuring device for measuring the inner and outer profiles of a pipe piece is provided, the pipe piece test piece is placed in the center of the support platform, the scanning angle of the 3D scanner is controlled by the X-axis adjusting motor, and the pipe piece can be measured at multiple angles; the pipe piece can be self-rotated by the Z-axis adjusting motor driving the gear set, the rotating shaft and the rotating platform, so as to increase the scanning range of the 3D scanner; the pipe piece can be clamped by the clamping mechanism, the lifting platform is lowered by a certain height controlled by the lifting driving cylinder, the pipe piece is turned over and placed on the lifting platform controlled by the Y-axis adjusting motor, and the clamping mechanism and the lifting platform are reset, so that the measurement operation can be continued, and the comprehensiveness of the measurement data is further increased, so that the device can automatically turn over the test piece, has strong comprehensive measurement capability, high automation degree and is conducive to improving the measurement efficiency, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1An isometric view of a measuring device for measuring the internal and external profiles of a pipe for the example provided;

[0020] Figure 2 A front view of a measuring device for measuring the internal and external profiles of a pipe for the example provided;

[0021] Figure 3 A side view of a measuring device for measuring the internal and external profiles of a pipe for the example provided;

[0022] Figure 4 A Figure 2 A sectional view of a measuring device for measuring the internal and external profiles of a pipe in the H-H direction for the example provided;

[0023] Figure 5 A front view of a clamping mechanism for the example provided;

[0024] Figure 6 A perspective view of a clamping mechanism for the example provided;

[0025] Figure 7 A perspective view of a measuring device for measuring the internal and external profiles of a pipe in its original state for the example provided;

[0026] Figure 8 A front view of a measuring device for measuring the internal and external profiles of a pipe in its original state for the example provided;

[0027] Figure 9 A clamping working drawing of a measuring device for measuring the internal and external profiles of a pipe in its preparatory state for the example provided;

[0028] Figure 10 A schematic view of a measuring device for measuring the internal and external profiles of a pipe after turning over the test piece for the example provided;

[0029] Figure 11 A perspective view of a transmission rope for the example provided;

[0030] In the above figures:

[0031] 1, measuring table; 2, support; 3, 3D scanner; 31, projection unit; 32, camera unit; 33, T-shaped flange; 4, X-axis adjusting motor; 5, support table; 51, turning shaft; 52, flower mouth; 53, key type hole; 54, lifting mouth; 55, fin plate; 56, fork rod; 6, Y-axis adjusting motor; 7, clamping mechanism; 71, top clamping plate; 72, side plate; 73, rib clamping plate; 74, sliding shaft head; 75, transmission pipe; 76, bottom clamping plate; 77, top rod; 8, transmission rope; 9, spring; 10, winding rope rod; 11, clamping drive motor; 12, lifting table; 121, radiation port; 13, lifting cylinder; 14, transmission plate; 15, lifting drive cylinder; 16, rotating port; 17, rotating table; 18, rotating shaft; 19, gear set; 191, driven gear; 192, transition gear column; 193, driving gear; 20, Z-axis adjusting motor; 21, support spring. DETAILED DESCRIPTION

[0032] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the following will further describe the present application with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, the following will appear "up", "down", "left", "right" words, only indicate the same with the upper, lower, left, right direction of the drawing itself, and do not limit the structure.

[0033] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from the description herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0034] Embodiments, such as Figures 1-11The application provides a measuring device for measuring the inner and outer profiles of a pipe, which comprises a measuring table 1, a support 2 arranged on the top of the measuring table 1 and close to the rear side thereof, a 3D scanner 3 arranged on the support 2, the 3D scanner 3 comprising a projection unit 31 and a camera unit 32, and a computer with a display screen arranged at the transmission terminal of the 3D scanner 3, which is used for performing corresponding image processing and data calculation on the scanned data. Further, T-shaped flanges 33 are arranged at the two ends of the 3D scanner 3, a horizontal adjusting shaft is arranged at the center of each T-shaped flange 33, the adjusting shaft is supported by the support 2, one end of the adjusting shaft is provided with an X-axis adjusting motor 4, a mounting hole is arranged in the middle of the measuring table 1, a support table 5 is arranged in the mounting hole, a pair of overturning shafts 51 are arranged on the side surface of the support table 5, Y-axis adjusting motors 6 are arranged at the end portions of the overturning shafts 51, a plurality of flower holes 52 are arranged on the side surface of the support table 5, key-shaped holes 53 are arranged in the flower holes 52 and inclined upward, clamping mechanisms 7 are arranged in the flower holes 52 and movable along the flower holes 52 and the key-shaped holes 53, all the clamping mechanisms 7 are connected through transmission ropes 8, springs 9 are arranged between adjacent clamping mechanisms 7 and sleeved on the transmission ropes 8, the springs 8 are used for restoring the caliber of the clamping mechanisms 7, accumulating restoring potential energy and having a certain buffering effect, a winding rope rod 10 is arranged at the power end of the transmission rope 8, the winding rope rod 10 is arranged below the support table 5 and connected with the measuring table 1, a clamping driving motor 11 is arranged at one end of the winding rope rod 10, a square lifting hole 54 is arranged in the middle of the support table 5, a lifting table 12 is arranged in the lifting hole 54, a lifting cylinder 13 is arranged at the bottom of the lifting table 12, a transmission plate 14 is arranged at the bottom of the lifting cylinder 13, lifting driving cylinders 15 are arranged at the two ends of the transmission plate 14, a rotating hole 16 is arranged at the center of the lifting table 12, a rotating table 17 is arranged in the rotating hole 16, a rotating shaft 18 is arranged at the bottom of the rotating table 17, a gear set 19 is arranged at the bottom of the rotating shaft 18, and a Z-axis adjusting motor 20 is arranged at the power input end of the gear set 19. When the clamping mechanisms 7 are kept in the original position, the top surface of the clamping mechanisms 7 just compensates the flower holes 52, so that the measuring table 1 keeps a relatively complete supporting surface, which is beneficial to reducing the error of 3D projection measurement.

[0035] Specifically, the support table 5, the lifting table 12 and the rotating table 17 are all directly contacted with the pipe sample, the maximum plane of the pipe is smaller than the horizontal area of the lifting hole 54, and the center of gravity of the pipe falls on the rotating table 17, so that the pipe can be carried by the lifting table 12 and lifted up and down, and the rotating table 17 is used for meeting the rotation requirement of the pipe.

[0036] The mechanical action for automatically turning over the pipe is that the clamping drive motor 11 is used to drive the rotation of the winding rod 10 to control the working length of the transmission rope 8, and then control the clamping diameter formed by all the clamping mechanisms 7, and while the diameter of all the clamping mechanisms 7 changes, the single clamping mechanism 7 can move along the path provided by the key hole 53 and the socket 52 to obtain the corresponding opening to limit the free movement of the pipe; in this way, the pipe can be clamped by the clamping mechanism 7, the lifting platform 12 is lowered by a certain height controlled by the lifting drive cylinder 15, the lifting platform 12 and the rotating table 17 simultaneously leave the support plane of the pipe, the clamping mechanism 7 is controlled to turn over by the Y-axis adjusting motor 6, so that the pipe completes the turning over, and after the clamping mechanism 7 is loosened, the turned over pipe falls stably on the lifting platform 12, the clamping mechanism 7 is reset, the lifting platform 12 is also raised and kept in horizontal alignment with the support table 5, and the test piece is displayed on the measuring table 1 with a new surface to be measured, and the measurement operation can continue, further increasing the comprehensiveness of the measurement data, so that the device can automatically turn over the test piece, has strong comprehensive measurement capability and high automation degree, and is conducive to improving the measurement efficiency and has high comprehensive utilization rate.

[0037] As shown in Figure 4 The clamping mechanism 7 includes a top clamping plate 71 matched with the shape of the socket 52, the top clamping plate 71 is provided with a vertically extending edge plate 72 at one end away from the center of the support table 5, a rib clamping plate 73 is arranged at the transition position of the edge plate 72 and the top clamping plate 71, a sliding shaft head 74 matched with the key hole 53 is arranged on the side surface of the edge plate 72, two transmission pipes 75 are arranged on the outer side of the edge plate 72 and spaced apart upward and downward, the transmission pipes 75 are used to connect the transmission rope 8, a bottom clamping plate 76 is arranged on the inner side of the edge plate 72 and close to the bottom position thereof, the bottom clamping plate 76 extends towards the sliding direction of the clamping mechanism 7 and the radial length thereof is greater than that of the top clamping plate 71. Among them, the two transmission pipes 75 on the edge plate 72 can at least meet the connection of one transmission path of the transmission rope 8, as shown in Figure 11 On the second transmission path, the transmission rope 8 can not pass through all the transmission pipes 75 completely, but is connected downward from the transmission pipe 75 close to the winding rod 10 to the winding rod 10 to meet the synchronous control effect of the winding rod 10 on both ends of the transmission rope 8. The edge plate 72 not only provides a transmission node for the transmission pipe 75 and the transmission rope 8, but also provides a basic clamping distance for the top clamping plate 71 and the bottom clamping plate 76; during the movement of the clamping mechanism 7 along the socket 52 and the key hole 53, the bottom clamping plate 76 can contact the pipe from below, and the top clamping plate 71 and the rib clamping plate 73 limit the movement range of the pipe from above and from the side respectively, thereby limiting the free movement of the pipe, and further ensuring the clamping effect of the device before the pipe is prepared to turn over, which is conducive to improving the stability of the subsequent turning over action.

[0038] As shown in Figure 4As shown, the bottom of the support platform 5 is provided with multiple push rods 77 corresponding to the clamping mechanism 7. The bottom surface of the push rod 77 is inclined and contacts the extension surface of the bottom clamping plate 76, which is an elastic plate. In this way, when the clamping mechanism 7 is in its original position, the opening between the top clamping plate 71 and the bottom clamping plate 76 can be kept small, thereby improving the integrity of the mechanism with the support platform 5 and the concealment of the bottom clamping plate 76 under the support platform 5. As the clamping mechanism 7 moves along the spline 52 and the keyway 53, the bottom clamping plate 76 can be gradually opened under the sliding braking action of the push rods 77, and the top clamping plate 71 and the bottom clamping plate 76 will have corresponding openings. Moreover, the bottom clamping plate 76 can contact the bottom of the pipe to be tested in advance, and contact the lifting platform 12 and the rotating platform 17 to support the pipe to be tested.

[0039] To prevent the clamping diameter of the clamping mechanism 7 from getting stuck in the waist of the spout 52 during the controlled contraction process, the present invention designs the width of the side plate 72 to be smaller than the minimum width of the spout 52. This ensures that the side plate 72 can flexibly pass through the maximum and minimum radial positions of the spout 52, thereby ensuring that the clamping mechanism 7 has the clamping ability to meet the clamping requirements for the pipe fitting.

[0040] To meet the clamping requirements of the clamping mechanism 7 for the pipe fitting, the bottom sides of the spout 52 provided by the present invention are provided with a pair of fins 55, and key holes 53 are provided on the fins 55. The fins 55 provide a certain extension length, which allows the key holes 53 to have a longer length to meet the rising height and radial translation length of the clamping mechanism 7. This allows all clamping mechanisms 7 to obtain sufficient clamping height and clamping diameter when retracted to a certain extent. Furthermore, after the clamping mechanism 7 returns to its original position, the top surface of the top clamping plate 71 can remain flush with the surface of the support platform 5, reducing unnecessary interference for the 3D scanner 3 to acquire the inner and outer contour data of the pipe fitting.

[0041] Furthermore, the present invention provides 12 clamping mechanisms 7, which are divided into four groups. Each group of clamping mechanisms 7 corresponds radially to one side of the lifting port 54. The 12 clamping mechanisms 7 not only have more clamping and limiting nodes to clamp the pipe specimen, but also the three clamping mechanisms 7 in each of the four groups can maintain a good cooperative relationship in space. In particular, considering the square design of the lifting platform 12, such grouping design can improve the space utilization of all clamping mechanisms 7. When the clamping mechanisms 7 in adjacent groups are reduced to the minimum clamping diameter, the adjacent top clamping plates 71 are basically in contact with each other to fully restrict the free movement surface of the pipe, thereby ensuring the clamping quality of the pipe to be tested by the device.

[0042] like Figure 4 , Figure 9 and Figure 10As shown, the lifting platform 12 is a downward open groove structure, and the lifting platform 12 is provided with a corresponding radiation port 121 corresponding to the clamping mechanism 7, the radiation port 121 is a narrow port and slightly larger than the width of the bottom clamping plate, and the radiation port 121 is used for the bottom clamping plate 76 to slide out of the support surface of the lifting platform 12 from bottom to top. The radiation port 121 provided on the lifting platform 12 can provide the structure condition for the bottom clamping plate 76 to contact the pipe in advance, which is beneficial to release the support relationship of the lifting platform 12 on the pipe in advance, and facilitates the lifting platform 12 to be lowered to a reasonable position before the pipe is turned over, and leaves sufficient rotation allowance for the clamping mechanism 7 and the whole support table 5.

[0043] In order to improve the space planning performance of the internal structure of the measuring table 1, a pair of hollow fork rods 56 are arranged on the side of the support table 5, the fork rod 56 provides a turning center, and the fork rod 56 is provided with a transmission hole for the transmission rope 8 to pass through, so that the rotation movement of the fork rod 56 and the whole support table 5 does not excessively affect the actual working length of the transmission rope 8, and the micro movement of the clamping port diameter of the clamping mechanism 7 does not excessively affect the stability of the pipe during the process of carrying the pipe to turn over; one of the fork rods 56 is connected with the turning shaft 51, and the turning shaft 51, the fork rod 56 and the support table 5 provide a turning driving force for the Y-axis adjusting motor 6.

[0044] As shown in Figure 4 and Figure 8 , the gear set 19 includes a driven gear 191 arranged below the lifting cylinder 13, a support spring 21 connected with the inner bottom of the measuring table 1 is arranged below the driven gear 191, a transition gear column 192 is arranged on the transmission side of the driven gear 191, the height of the transition gear column 192 is greater than the driving stroke of the lifting driving cylinder 15, a driving gear 193 engaged with the transition gear column 192 is arranged on the transmission side of the transition gear column 192, and the power input end of the driving gear 193 is connected with the Z-axis adjusting motor 20. The support spring 21 is used to ensure the stability of the driven gear 191 in the vertical direction, the driven gear 191 can complete the lifting movement under the driving of the transmission rod and the lifting cylinder 13, and the driven gear 191 always maintains engagement with the transition gear set 19 during the lifting process, so that the gear set 19 always maintains a reliable and stable transmission path and transmission relationship, and thus the Z-axis adjusting motor 20 can effectively control the angle of the pipe on the support plane after the lifting table 12 and the rotating table 17 are reset.

[0045] As shown in Figures 1-3 , the support 2 is provided with two pairs of bearing seats, and the inner part of the bearing seat is provided with a ball bearing matched with the adjusting shaft. The ball bearing can reduce the rotation resistance of the 3D scanner 3; the two pairs of bearing seats can provide different basic heights, which are used to complete multi-angle adjustment with better basic height when measuring different pipes, and are beneficial to improve the comprehensive utilization rate of the device.

[0046] The above merely provides the preferred embodiment of the present application, and is not intended to limit the present application to other forms. Any person skilled in the art can make modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application shall be defined and protected by the appended claims.

Claims

1. A measuring device for measuring the inner and outer profiles of a pipe, comprising a measuring table, the top of said measuring table and the position close to the rear side thereof being provided with a support, said support being provided with a 3D scanner, said 3D scanner comprising a projection unit and a camera unit, characterized in that, The both ends of the 3D scanner are provided with T-shaped flanges, the center of the T-shaped flanges is provided with a horizontal adjusting shaft, the adjusting shaft is matched with a support, one end of the adjusting shaft is provided with an X-axis adjusting motor, the middle of the measuring table is provided with a mounting port, the mounting port is provided with a support table, the side of the support table is provided with a pair of overturning shafts, the end of the overturning shafts is provided with a Y-axis adjusting motor, the side of the support table is provided with a plurality of flower ports, the flower ports are provided with key-shaped holes which are inclined upward, the flower ports are provided with clamping mechanisms which are movable along the flower ports and the key-shaped holes, all the clamping mechanisms are connected through transmission ropes, springs which are matched with the transmission ropes are arranged between adjacent clamping mechanisms, the power end of the transmission rope is provided with a rope winding rod, the rope winding rod is arranged below the support table and is connected with the measuring table, one end of the rope winding rod is provided with a clamping driving motor, the middle of the support table is provided with a square lifting port, the lifting port is provided with a lifting table, the bottom of the lifting table is provided with a lifting cylinder, the bottom of the lifting cylinder is provided with a transmission plate, the both ends of the transmission plate are provided with lifting driving cylinders, the center of the lifting table is provided with a rotating port, the rotating port is provided with a rotating table, the bottom of the rotating table is provided with a rotating shaft, the bottom of the rotating shaft is provided with a gear set, the power input end of the gear set is provided with a Z-axis adjusting motor.

2. A measuring device for measuring the internal and external profile of a pipe according to claim 1, characterized in that, The clamping mechanism comprises a top clamping plate which is matched with the shape of the flower port, the top clamping plate is provided with a vertical extending side plate at one end away from the center of the support table, the transition position of the side plate and the top clamping plate is provided with a rib clamping plate, the side of the side plate is provided with a sliding shaft head which is matched with the key-shaped hole, the outer side of the side plate is provided with two transmission pipes which are distributed above and below, the transmission pipes are used to connect the transmission ropes, the inner side of the side plate and the position close to the bottom thereof are provided with a bottom clamping plate, the bottom clamping plate extends to the sliding direction of the clamping mechanism and the radial length thereof is greater than the radial length of the top clamping plate.

3. A measuring device for measuring the internal and external profile of a pipe according to claim 2, characterized in that, The bottom of the support table is provided with a plurality of top rods which correspond to the clamping mechanisms, the bottom surface of the top rod is an inclined surface and is in contact with the extension surface of the bottom clamping plate, the bottom clamping plate is an elastic plate.

4. A measuring device for measuring the internal and external profile of a pipe according to claim 3, characterized in that, The width of the side plate is less than the minimum width of the flower port.

5. A measuring device for measuring the internal and external profile of a pipe according to claim 4, characterized in that, The bottom of the flower port is provided with a pair of fin plates on both sides, the key-shaped hole is arranged on the fin plate.

6. A measuring device for measuring the inner and outer profile of a pipe according to any one of claims 1-5, characterized in that, The number of the clamping mechanisms is 12 and they are divided into four groups, each group of clamping mechanisms corresponds to one side of the lifting port.

7. A measuring device for measuring the internal and external profile of a pipe according to claim 6, characterized in that The lifting table is a groove type structure with an opening downward, the lifting table is provided with a radiation port which corresponds to the clamping mechanism one by one, the radiation port is used for the bottom clamping plate to slide out of the support surface of the lifting table from bottom to top.

8. A measuring device for measuring the inner and outer profile of a pipe according to claim 1, characterized in that, The side of the support table is provided with a pair of hollow fork rods, the fork rods are provided with transmission holes for the transmission ropes to pass through, one of the fork rods is in transmission connection with the Y-axis adjusting motor.

9. The apparatus of claim 1 wherein, The gear set comprises a driven gear arranged below the lifting cylinder, a support spring connected with the inner bottom of the measuring table is arranged below the driven gear, a transition gear column is arranged on the transmission side of the driven gear, the height of the transition gear column is greater than the driving stroke of the lifting driving cylinder, a driving gear engaged with the transition gear column is arranged on the transmission side of the transition gear column, and the power input end of the driving gear is connected with the Z-axis adjusting motor.

10. The apparatus of claim 1 wherein, Two pairs of bearing seats are arranged on the support, and ball bearings matched with adjusting shafts are arranged in the bearing seats.

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