A control method of a metal pipeline rapid thickness measuring device

Abstract

The present application relates to a kind of metal pipeline quick thickness measuring device control method.The thickness measuring device includes mounting bracket, thickness gauge, multiple support frames and counterweight.When the detection position of thickness gauge needs to be adjusted, part of the support frame is relaxed, part of the support frame is contracted, so that the mounting bracket is eccentrically moved by a preset distance at least in horizontal direction.The rotation angle of the counterweight around the pipe axis is obtained.After the mounting bracket is eccentrically moved by a preset distance, part of the support frame and the inner wall of the pipe are separated from contact.According to the rotation angle, it is determined whether the mounting bracket is moved in place.After the mounting bracket is moved in place, all the support frames and the inner wall of the pipe are in contact.The control of support frame makes the shape of all support frames consistent.The setting of counterweight and support frame can make the mounting bracket move around the axis of the pipe, so that the flexibility of thickness gauge is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of watercraft, floating platform and the like water equipment or building technology, in particular to a kind of metal pipeline quick thickness measuring device control method of watercraft each type pipeline. BACKGROUND

[0002] For watercraft, in seawater at all times, corrosion of metal occurs at all times, but the rate of corrosion is not so easy to grasp, in the operation of the ship, the corrosion of metal should be accurately grasped, and maintenance matters are arranged according to the corrosion condition. Especially in metal pipeline, the outer surface of metal pipeline is coated with paint, and even insulation layer, which affects the accuracy of detection for thickness detection equipment. In order to ensure the reliability of data, the coating and paint are generally removed, which is time-consuming and laborious for a large number of pipes. The existing pipe thickness measurement method has poor flexibility, cannot be moved, is inconvenient to operate, and cannot measure pipes of different diameters. Therefore, a metal pipe quick thickness measuring device control method is provided. SUMMARY

[0003] In view of the above problems, the present application is proposed to provide a metal pipe quick thickness measuring device control method to overcome the above problems or at least partially solve the above problems, without removing the pipe coating or paint, which can solve the problem of poor flexibility of the device, and cannot be moved in the pipe and is inconvenient to operate, and can measure pipes of different diameters.

[0004] Specifically, the present application provides a metal pipe quick thickness measuring device control method, which comprises a mounting frame, a thickness gauge, a plurality of support frames and a counterweight.

[0005] The thickness gauge is arranged in the pipe; the thickness gauge is installed on the mounting frame; the plurality of support frames are evenly distributed along the circumference of the mounting frame, and the support frames are installed on the mounting frame; two rollers are arranged on each support frame, and the two rollers are arranged along the axis direction of the pipe; the counterweight is arranged below the mounting frame and is rotatably connected with the mounting frame; wherein,

[0006] The metal pipe quick thickness measuring device control method comprises:

[0007] When the thickness gauge needs to adjust the detection position, part of the support frames is relaxed, and part of the support frames is contracted, so that the mounting frame moves eccentrically by a preset distance in the horizontal direction; and the rotation angle of the counterweight around the pipe axis is obtained;

[0008] After the mounting frame moves eccentrically by a preset distance, part of the support frames and the inner wall of the pipe are separated from contact;

[0009] Whether the mounting frame moves to the position is determined according to the rotation angle;

[0010] After the installation frame is moved into position, all the support frames and the inner wall of the pipe are in contact;

[0011] The support frames are controlled to be in the same shape.

[0012] Preferably, according to the preset rotation direction of the thickness gauge or the eccentric position of the installation frame, some of the support frames are relaxed and some of the support frames are contracted.

[0013] Preferably, the control of the support frames to be in the same shape includes:

[0014] The support frames in the contracted state are gradually relaxed to the state before the change, and the support frames in the relaxed state are gradually contracted to the state before the change.

[0015] Preferably, the thickness gauge includes a detection rod and a detection head; one end of the detection rod is connected to the support frame and is configured to rotate with the support frame; and the detection head is arranged at the other end of the detection rod.

[0016] The control method of the metal pipe rapid thickness measuring device further includes:

[0017] The positioning angle between the detection rod and the gravity center line of the counterweight is obtained; and the positioning angle and the detection result are output.

[0018] Preferably, the control method of the metal pipe rapid thickness measuring device further includes:

[0019] According to the positioning angle, it is judged whether the rotation of the installation frame exceeds the preset range, and the rotation angle of the installation frame is further adjusted.

[0020] Preferably, the thickness measuring device further includes a locking device; the locking device is used to lock the counterweight, so that the counterweight and the support frame are stationary relative to each other.

[0021] In the process of making all the support frames in the same shape, the locking device is used to lock the counterweight. The counterweight and the support frame are kept relatively stationary by the locking device.

[0022] Preferably, each support frame and an installation frame form a parallelogram mechanism; the greater the difference between the contraction amount of the left and right support frames of the installation frame and the relaxation amount of the left and right support frames of the installation frame, the greater the distance between the gravity center line of the counterweight and the axis of the pipe, and thus the rotational potential energy of the counterweight is improved.

[0023] Preferably, each support frame includes two parallel support rods and a connecting rod; the two support rods are arranged in parallel, one end of each support rod is hinged to the installation frame, and the other end is hinged to the connecting rod to form a parallelogram mechanism with the installation frame; and the connecting rod is an arc-shaped rod curved towards the installation frame.

[0024] Preferably, the thickness measuring device further comprises a light ray sensor; the light ray sensor is arranged at the joint of the counterweight and the mounting frame; the light ray sensor is used to measure the distance between the gravity center line of the counterweight and the inner wall of the pipe;

[0025] The control method of the metal pipe rapid thickness measuring device further comprises:

[0026] When the thickness measuring device is located at the turning part of the pipe, the distance between the gravity center line of the counterweight and the inner wall of the pipe is obtained;

[0027] The offset of the gravity center line is determined according to the pipe radius and the distance;

[0028] The positioning angle is updated according to the offset.

[0029] Preferably, the thickness measuring device further comprises a tensioning device and a control module; the tensioning device is a linear telescopic device; one end of the tensioning device is hinged to the support frame, and the other end is hinged to the mounting frame, so that when the tensioning device shortens, the support frame relaxes, and when the tensioning device lengthens, the support frame contracts; the control module and the tensioning device are electrically connected, and are used to control the extension and contraction of the tensioning device;

[0030] The method for making part of the support frame relax and part of the support frame contract comprises: making the tensioning device on the mounting frame that needs to relax contract; and making the tensioning device on the mounting frame that needs to contract lengthen.

[0031] In the control method of the metal pipe rapid thickness measuring device, when the thickness gauge needs to adjust the detection position, part of the support frame relaxes and part of the support frame contracts, so that the mounting frame moves eccentrically by a preset distance, and the rotation angle of the counterweight around the pipe axis at the eccentric position is obtained. Since the mounting frame is at the eccentric position, the potential energy of the rotation of the counterweight has a tendency to drive the mounting frame to rotate around the pipe axis. After the mounting frame moves eccentrically by a preset distance, part of the support frame and the inner wall of the pipe are separated to reduce the friction between the rollers and the inner wall of the pipe. The counterweight drives the mounting frame to rotate around the pipe axis under the action of gravity, and in turn drives the thickness gauge to rotate. The cooperation of the counterweight and the support frame enables the mounting frame to move around the pipe axis, thereby improving the flexibility of the thickness gauge.

[0032] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0034] Figure 1 This is a flowchart of a control method for a rapid thickness measurement device for metal pipes according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the thickness measuring device structure of a control method for a rapid thickness measuring device for metal pipes according to an embodiment of the present invention.

[0036] Figure 3 This is a cross-sectional view of a thickness measuring device according to a control method of a rapid thickness measuring device for metal pipes according to an embodiment of the present invention.

[0037] Figure 4 yes Figure 2 A cross-sectional view along the AA direction;

[0038] Figure 5 yes Figure 3 Cross-sectional view along the BB direction. Detailed Implementation

[0039] The following reference Figures 1 to 5 This invention describes a control method for a rapid thickness measurement device for metal pipes according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0040] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In addition, in the description of the embodiments, the first feature being "on" or "under" the second feature can include the first and second features being in direct contact, or can include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of the embodiments, the first feature being "on", "above", and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is higher in horizontal height than the second feature. The first feature being "under", "below", or "underneath" the second feature can be the first feature being directly below or obliquely below the second feature, or merely means that the first feature is lower in horizontal height than the second feature.

[0042] In the description of the embodiments, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] Figure 1 A control method of a metal pipe rapid thickness measuring device, as shown in Figure 1 , and referring to Figures 2 to 5 , the embodiment of the present application provides a control method of a metal pipe rapid thickness measuring device, the thickness measuring device comprising a mounting frame 300, a thickness gauge 200, a plurality of support frames 430 and a counterweight. The thickness measuring device detects the pipe 100 in a horizontal state.

[0044] The thickness gauge 200 is arranged in the pipe 100 and is used for thickness measurement of the pipe 100. The thickness gauge 200 is mounted on the mounting frame 300. The plurality of support frames 430 are uniformly distributed along the circumference of the mounting frame 300, and the support frames 430 are mounted on the mounting frame 300. Two rollers are arranged on each support frame 430 and are arranged along the axis direction of the pipe 100. In the initial state, the rollers are in contact with the inner wall of the pipe 100, so that the mounting frame 300 can move along the pipe 100. At the same time, the mounting frame 300 is coaxial with the pipe 100 in the initial state. The counterweight is arranged below the mounting frame 300 and is rotationally connected with the mounting frame 300. In the initial state, the center of gravity of the counterweight passes through the axis of the pipe 100, so that when the support frames 430 on the right side of the mounting frame 300 are relaxed and the support frames 430 on the left side are contracted, the mounting frame 300 as a whole moves to the left side, thereby driving the counterweight to move to the left side. Wherein,

[0045] The control method of the metal pipe rapid thickness measuring device comprises:

[0046] When the detection position of the thickness gauge 200 needs to be adjusted, the partial support frames 430 are relaxed, and the partial support frames 430 are contracted to move the mounting frame 300 eccentrically by a preset distance. Since the mounting frame 300 is in the eccentric position, the rotational potential energy of the counterweight has a tendency to drive the mounting frame 300 to rotate around the axis of the pipeline 100.

[0047] After the mounting frame 300 moves eccentrically by the preset distance, the partial support frames 430 and the inner wall of the pipeline 100 are disengaged to reduce the friction between the rollers and the inner wall of the pipeline 100. The counterweight drives the mounting frame 300 to rotate around the axis of the pipeline 100 under the action of gravity, thereby driving the thickness gauge 200 to rotate.

[0048] The rotation angle of the counterweight around the axis of the pipeline 100 is obtained, starting from the initial position.

[0049] Whether the mounting frame 300 is moved into position is determined according to the rotation angle. After the mounting frame 300 is moved into position, all the support frames 430 are brought into contact with the inner wall of the pipeline 100. The support frames 430 are controlled to be consistent in form, i.e., the support frames 430 are restored to the state before the change, so that the mounting frame 300 is restored to be coaxial with the pipeline 100. In the process of moving the mounting frame 300 into position, the thickness gauge 200 is driven to rotate around the axis of the pipeline 100 by a preset angle, thereby changing the position of the inner wall of the pipeline 100 corresponding to the thickness gauge 200, and thereby achieving the adjustment of the detection position of the thickness gauge 200 on the pipeline 100.

[0050] When the thickness gauge 200 needs to adjust the position of the inner wall of the pipeline 100 corresponding thereto, the partial support frames 430 on the left side of the mounting frame 300 are contracted, and the partial support frames 430 on the right side of the mounting frame 300 are relaxed, so as to push the mounting frame 300 to move to the left side, and thereby make the mounting frame 300 be located eccentrically on the left side of the pipeline 100. At this time, the rotational potential energy of the counterweight has a tendency to drive the mounting frame 300 to rotate around the axis of the pipeline 100. After the mounting frame 300 moves eccentrically by a preset distance, the partial support frames 430 are contracted to generate a gap with the inner wall of the pipeline 100, so as to reduce the friction between the rollers and the inner wall of the pipeline 100. The rotational potential energy of the counterweight overcomes the friction between the support frames 430 and the inner wall of the pipeline 100, and drives the mounting frame 300 to rotate around the axis of the pipeline 100, so as to drive the thickness gauge 200 to rotate.

[0051] When the angle of rotation of the mounting frame 300, i.e., the rotation angle, is equal to the preset rotation angle, it indicates that the mounting frame 300 is moved into position. Subsequently, the support frames 430 are gradually relaxed to be in contact with the inner wall of the pipeline 100, and are gradually restored to the state before the change, so that the mounting frame 300 is restored to be coaxial with the pipeline 100.

[0052] In some embodiments of the present application, the partial support frames 430 are expanded and contracted according to the preset rotating direction of the thickness gauge 200 or the eccentric position of the mounting frame 300. When the preset rotating direction of the thickness gauge 200 is counterclockwise or the eccentric position of the mounting frame 300 is on the left side of the axis of the pipe 100, the partial support frames 430 on the left side of the mounting frame 300 are contracted and the partial support frames 430 on the right side of the mounting frame 300 are expanded. Conversely, the partial support frames 430 on the left side of the mounting frame 300 are expanded and the partial support frames 430 on the right side of the mounting frame 300 are contracted, so that the thickness gauge 200 can adjust to the inner wall of the pipe 100 according to the requirement.

[0053] In some embodiments of the present application, the partial support frames 430 are expanded and contracted according to the preset rotating angle. The preset rotating angle determines the rotating direction of the thickness gauge 200 or the eccentric position of the mounting frame 300. Since the target position is different, the preset rotating angle is different, and in order to quickly and accurately reach the preset position, the corresponding rotating direction and eccentric position can be different, so as to adapt to different target positions.

[0054] In some embodiments of the present application, the support frames 430 are controlled to be in the same state, including:

[0055] The support frames 430 in the contracted state are gradually expanded to the state before the change, and the support frames 430 in the expanded state are gradually contracted to the state before the change, so that all the support frames 430 return to the same state, thereby driving the counterweight and the mounting frame 300 to return to the initial position.

[0056] In some embodiments of the present application, as shown in Figure 5 The thickness gauge 200 includes a detection rod 220 and a detection head 230. One end of the detection rod 220 is connected with the support frame 430 and is configured to rotate with the support frame 430. The detection head 230 is arranged at the other end of the detection rod 220, so as to drive the detection rod 220 to rotate when the mounting frame 300 rotates, and further drive the detection head 230 to rotate.

[0057] The control method of the metal pipe rapid thickness measuring device further includes:

[0058] The angle between the detection rod 220 and the center of gravity line of the counterweight is obtained, and the angle is the positioning angle. The positioning angle and the detection result are output. The positioning angle can determine the position of the detection rod 220, so as to determine the position of the inner wall of the pipe 100 corresponding to the detection head 230, so as to facilitate timely adjustment of the detection head 230 which does not correspond to the preset inner wall of the pipe 100. At the same time, the specific position of the inner wall of the pipe 100 corresponding to the output detection result is quickly obtained, so as to improve the detection efficiency.

[0059] In further embodiments of the present application, as shown inFigure 1 As shown, the mounting frame 300 is provided with an angle measuring instrument, which is arranged on the detection rod 220 and can detect the angle between the detection rod 220 and the plumb line of the counterweight, and the rotation angle of the counterweight around the axis of the pipeline.

[0060] In some embodiments of the present application, the control method of the metal pipeline rapid thickness measuring device further comprises:

[0061] The positioning angle is used to determine whether the rotation of the mounting frame 300 exceeds the preset range, which is the angle range between the detection rod 220 and the center of gravity line of the counterweight at the target detection position.

[0062] If the positioning angle is greater than the expected positioning angle, the angle of the support frame 430 rotating around the axis of the pipeline 100 exceeds the preset range, so that the support frame 430 is adjusted to rotate in the opposite direction. Specifically, the eccentricity of the mounting frame 300 is moved to the other side by contraction and relaxation of the support frame 430. If the positioning angle is less than the expected positioning angle, the angle of the support frame 430 rotating around the axis of the pipeline 100 is less than the preset range, so that the support frame 430 is further rotated.

[0063] In some embodiments of the present application, the thickness measuring device further comprises a locking device. The locking device is used to lock the counterweight, so that the counterweight and the support frame 430 are stationary relative to each other.

[0064] In the process of making all the support frames 430 consistent, the locking device is used to lock the counterweight. The locking device is used to keep the counterweight and the support frame 430 relatively stationary, thereby preventing the counterweight from reciprocating and affecting the stability of the mounting frame 300 returning to the center position of the pipeline.

[0065] In further embodiments of the present application, the counterweight is connected to the mounting frame 300 through a rotating bearing, and the locking device is installed on the rotating bearing to lock the rotation of the rotating bearing, so that the counterweight is locked and no longer swings.

[0066] In some embodiments of the present application, as shown in Figures 2 to 4 As shown, each support frame 430 and one mounting frame 300 form a parallelogram mechanism. The greater the difference between the contraction amount and the relaxation amount of the support frame 430 on both sides of the mounting frame 300, the greater the distance between the center of gravity line of the counterweight and the axis of the pipeline 100, and the greater the rotational potential energy of the counterweight. The greater the rotational potential energy of the counterweight, the faster the speed of the mounting frame 300 driven by the counterweight, thereby improving the adjustment speed of the thickness gauge 200.

[0067] In some embodiments of the present application, as shown in Figure 3As shown, each support frame 430 comprises two parallel support rods 432 and a connecting rod 431. The two support rods 432 are parallel, one end of each support rod 432 is hinged to the mounting frame 300, and the other end is hinged to the connecting rod 431 to form a parallelogram mechanism with the mounting frame 300. The connecting rod 431 is an arc-shaped rod bent towards the mounting frame 300. The arrangement of the arc-shaped connecting rod 431 can prevent the connecting rod 431 of the support frame 430 from being caught by the protrusion at the bend of the pipeline 100 when the thickness measuring device passes through the bend.

[0068] In further embodiments of the present application, as shown in Figure 3 When the support frame 430 is retracted, the angle between the support rod 432 and the axis of the pipeline 100 becomes smaller. When the support frame 430 is expanded, the angle between the support rod 432 and the axis of the pipeline 100 becomes larger. The two parallel support rods 432 and the connecting rod 431 together form a parallelogram mechanism with the mounting frame 300, thereby achieving the effect of retracting and expanding the support frame 430.

[0069] In further embodiments of the present application, as shown in Figure 2 and Figure 3 As shown, two rollers are arranged at the two ends of the connection between the connecting rod 431 and the support rod 432, specifically, the rollers are coaxial with the hinge points between the support rod 432 and the connecting rod 431. This arrangement allows one rotating shaft to realize the hinge between the support rod 432 and the connecting rod 431, as well as the rotation installation of the rollers, thus achieving a simple, compact and low-cost structure.

[0070] In some embodiments of the present application, the control method of the metal pipeline rapid thickness measuring device further comprises: when the thickness measuring device is located at the turning part of the pipeline 100, obtaining the distance between the center of gravity line of the counterweight and the inner wall of the pipeline 100. Determining the offset amount of the mounting frame 300 according to the radius of the pipeline 100 and the distance. According to the offset amount, moving the center of gravity line of the counterweight to the axis of the pipeline 100 by the support frame 430 and the mounting frame 300.

[0071] When the thickness measuring device is located at the turning part of the pipeline 100, the distance between the mounting frame 300 and the inner wall of the pipeline 100 on both sides is different, at this time the mounting frame 300 is rotated, and the position of the inner wall of the pipeline 100 corresponding to the thickness gauge 200 is deviated. Therefore, by adjusting the position of the mounting frame 300 through the offset amount, the thickness gauge 200 can detect the preset range, thereby ensuring the accuracy of the measurement.

[0072] In further embodiments of the present application, the thickness measuring device further comprises a light sensor. The light sensor is arranged at the connection between the counterweight and the mounting frame 300. The light sensor is used to measure the distance between the center of gravity line of the counterweight and the inner wall of the pipeline 100. The light sensor rotates with the counterweight, which can ensure that the horizontal distance is always measured.

[0073] In some embodiments of the present application, as shown in Figure 2 and Figure 3 The thickness measuring device further comprises a tensioning device 440 and a control module. The tensioning device 440 is a linear telescopic device. One end of the tensioning device 440 is hinged to the support frame 430, and the other end is hinged to the mounting frame 300, so that when the tensioning device 440 shortens, the support frame 430 relaxes, and when the tensioning device 440 lengthens, the support frame 430 contracts. Specifically, the tensioning device 440 has a pulling force that drives the support frame 430 to expand away from the mounting frame 300 along the radial direction of the pipeline 100. The pulling force of the tensioning device 440 on the support frame 430 is positively correlated with the degree of contraction of the support frame 430. The tensioning device 440 can adaptively adjust the support frame 430 according to the structural changes in the pipeline 100. The control module and the tensioning device 440 are electrically connected, and the control module is used to control the extension and contraction of the tensioning device 440.

[0074] The relaxing of part of the support frame 430 and the contraction of part of the support frame 430 include: shortening the tensioning device 440 on the mounting frame 300 that needs to relax. Lengthening the tensioning device 440 on the mounting frame 300 that needs to contract. The control module can control the extension and contraction of the tensioning device 440 to control the extension and contraction of the support frame 430.

[0075] In further embodiments of the present application, as shown in Figure 3 The tensioning device 440 is a hydraulic cylinder or a pneumatic cylinder or a compression spring or a linear motor. In the initial state, the pneumatic cylinder is lengthened to exert a pulling force on the support frame 430 to make it expand. In the initial state, the compression spring is in a contracted state, so that the compression spring has a tendency to lengthen, thereby exerting a pulling force on the support frame 430 to make it expand.

[0076] In some embodiments of the present application, as shown in Figure 3 The two rollers on each support frame 430 are a driving roller 410 and a driven roller 420, respectively. The driving roller 410 is connected with a driving motor 450, and the driving motor 450 and the driving roller 410 are connected through a transmission mechanism. The driving motor 450 is used to drive the driving roller 410 to rotate, so that the rotation of the driving roller 410 drives the support frame 430 to move along the pipeline 100, thereby realizing the movement of the thickness gauge 200 along the pipeline 100. The driving motor 450 is installed on the support frame 430. Specifically, when the driving motor 450 is installed on the support frame 430 or the mounting frame 300, the driving motor 450 can be arranged on the support rod 432 or the connecting rod 431, and can move synchronously with the extension and contraction of the support frame 430.

[0077] In further embodiments of the present application, as shown in Figure 3As shown, each drive motor 450 is connected to a drive wheel 410 via a reducer 460. The drive motor 450, through the reducer 460, can adjust the rotational speed of the drive wheel 410, thereby adjusting the speed at which the support frame 430 moves within the pipe 100, enabling the thickness gauge 200 to quickly reach a preset position within the pipe 100 for measurement. Furthermore, the reducer 460 drives the drive wheel 410 to rotate via a turbine mechanism.

[0078] In a further embodiment of the present invention, such as Figures 2 to 5 As shown, the drive motor 450 and the drive wheel 410 are located at the same end of the support frame 430 along the axis of the pipe 100. The tensioning mechanism and the driven wheel 420 are also located at the same end of the support frame 430 along the axis of the pipe 100. The drive motor 450 and the drive wheel 410 are located on the front side of the support frame 430 along the direction of movement of the pipe 100, while the tensioning mechanism and the driven wheel 420 are located on the rear side of the front side of the support frame 430 along the direction of movement of the pipe 100. The arrangement of the drive motor 450 and the support wheel, and the tensioning mechanism and the driven wheel 420 on the front and rear sides respectively, can balance the gravity on the front and rear sides of the support frame 430, thereby increasing the stability of the support frame 430 when moving within the pipe 100, and thus ensuring the stability of the thickness gauge 200 when measuring the pipe 100.

[0079] In some embodiments of the present invention, such as Figures 2 to 5 As shown, the thickness gauge 200 also includes a rotary motor 210. The rotary motor 210 is mounted on the mounting bracket 300. One end of the detection rod 220 is connected to the rotary motor 210. The rotary motor 210 is used to drive the detection rod 220 to swing around the axis of the pipe 100 within a preset angle, which is between 0° and 180°.

[0080] In a further embodiment of the present invention, such as Figures 2 to 5 As shown, a drive shaft 240 extends from the rotary motor 210 and is coaxially arranged with the pipe 100. One end of the drive shaft 240 is connected to the rotary motor 210, and one end of the detection rod 220 is connected to the drive shaft 240. The rotary motor 210 can rotate through the drive shaft 240, causing the detection rod 220 to swing.

[0081] In a further embodiment of the present invention, such as Figures 2 to 5 As shown, the mounting bracket 300 is provided with a support bearing 250, and the other end of the drive shaft 240 is inserted into the support bearing 250. The support bearing 250 supports the drive shaft 240, thereby increasing the stability of the drive shaft 240.

[0082] In some embodiments of the present invention, such as ​ As shown, the control module is electrically connected to the thickness gauge 200.

[0083] In some embodiments of the present application, the control module is electrically connected with the thickness gauge 200 through wireless transmission device, and the control module is arranged outside the pipeline 100 to facilitate remote control operation. In alternative embodiments of the present application, the control module is electrically connected with the thickness gauge 200 through cable transmission device.

[0084] At this point, those skilled in the art will appreciate that although several exemplary embodiments of the present application have been shown and described in detail herein, many other variations and modifications in form and detail are possible within the scope and spirit of the present application. Therefore, the scope of the present application is not to be understood as limited to the particular embodiments described herein, but rather encompasses all such variations and modifications that are encompassed within the scope and spirit of the present application.

Claims

1. A control method of a metal pipe rapid thickness measuring device, characterized in that, the measuring device comprises a mounting frame, a thickness gauge, a plurality of support frames and a counterweight; the thickness gauge is arranged in the pipe; the thickness gauge is mounted on the mounting frame; the plurality of support frames are evenly distributed along the circumference of the mounting frame, and the support frames are mounted on the mounting frame; each support frame is provided with two rollers arranged along the pipe axis direction; the counterweight is arranged below the mounting frame and is rotationally connected with the mounting frame; wherein, the control method of the metal pipe rapid thickness measuring device comprises: when the thickness gauge needs to adjust the detection position, part of the support frames are relaxed and part of the support frames are contracted, so that the mounting frame moves eccentrically in at least the horizontal direction by a preset distance; and the rotation angle of the counterweight around the pipe axis is obtained; after the mounting frame moves eccentrically by the preset distance, part of the support frames and the inner wall of the pipe are separated from contact; whether the mounting frame moves to the position is determined according to the rotation angle; after the mounting frame moves to the position, all the support frames are in contact with the inner wall of the pipe; the support frames are controlled to make the shapes of all the support frames consistent. 2.A control method of a metal pipe rapid thickness measuring device according to claim 1, characterized in that, part of the support frames are relaxed and part of the support frames are contracted according to the preset rotation direction of the thickness gauge or the eccentric position of the mounting frame. 3.A control method of a metal pipe rapid thickness measuring device according to claim 1, characterized in that, the control of the support frames to make the shapes of all the support frames consistent comprises: controlling the support frames in the contracted state to gradually relax to the state before the change, and controlling the support frames in the relaxed state to gradually contract to the state before the change. 4.A control method of a metal pipe rapid thickness measuring device according to claim 1, characterized in that, the thickness gauge comprises a detection rod and a detection head; one end of the detection rod is connected with the support frame and is configured to rotate with the support frame; the detection head is arranged at the other end of the detection rod; the control method of the metal pipe rapid thickness measuring device further comprises: obtaining the positioning angle between the detection rod and the gravity center line of the counterweight; outputting the positioning angle and the detection result.

5. The control method of the metal pipe quick thickness measuring device according to claim 4, wherein Further comprising: judging whether the rotation of the mounting frame exceeds the preset range according to the positioning angle, and further adjusting the rotation angle of the mounting frame.

6. The control method of the metal pipe quick thickness measuring device according to claim 1, wherein The measuring device further comprises a locking device; the locking device is used to lock the counterweight, so that the counterweight and the support frame are stationary relative to each other; in the process of making the shapes of all the support frames consistent, the locking device locks the counterweight. 7.A control method of a metal pipe rapid thickness measuring device according to claim 1, characterized in that, each support frame and the mounting frame constitute a parallelogram mechanism; the greater the difference between the contraction amount and the relaxation amount of the left and right support frames of the mounting frame, the greater the distance between the gravity center line of the counterweight and the axis of the pipe, and thus the rotational potential energy of the counterweight is improved.

8. The control method of the metal pipe rapid thickness measuring device according to claim 5, characterized in that, each of the support frames comprises two parallel support rods and a connecting rod; the two support rods are parallel to each other, one end of each of the support rods is hinged to the mounting frame, and the other end is hinged to the connecting rod to form a parallelogram mechanism with the mounting frame; and the connecting rod is an arc-shaped rod curved towards the mounting frame.

9. The control method of the metal pipe rapid thickness measuring device according to claim 8, characterized in that, the thickness measuring device further comprises a light sensor; the light sensor is arranged at the connection between the counterweight and the mounting frame; and the light sensor is used to measure the distance between the gravity center line of the counterweight and the inner wall of the pipe; the control method of the metal pipe rapid thickness measuring device further comprises: when the thickness measuring device is located at a turning part of the pipe, the distance between the gravity center line of the counterweight and the inner wall of the pipe is obtained; the offset of the gravity center line is determined according to the radius of the pipe and the distance; the positioning angle is updated according to the offset.

10. The control method of the metal pipe rapid thickness measuring device according to claim 7 or 8, characterized in that, the thickness measuring device further comprises a tensioning device and a control module; and the tensioning device is a linear telescopic device; one end of the tensioning device is hinged to the support frame, and the other end is hinged to the mounting frame, so that when the tensioning device is shortened, the support frame is relaxed, and when the tensioning device is lengthened, the support frame is contracted; the control module and the tensioning device are electrically connected, and the control module is used to control the extension and contraction of the tensioning device; the relaxing of part of the support frames and the contraction of part of the support frames comprise: the tensioning device on the mounting frame that needs to be relaxed is contracted; the tensioning device on the mounting frame that needs to be contracted is lengthened.

Images