Steel pipe processing ovality detection device

Abstract

The invention discloses a steel pipe processing ovality detection device in the technical field of steel pipe processing, and the device comprises a centering unit which comprises a grip, a first limiting part which is disposed at one side of the top end of the grip and is of a circular ring structure, and a second limiting part which is disposed at the other side of the top end of the grip and is symmetrical to the first limiting part. The transmission part is rotationally connected between the first limiting part and the second limiting part in a sleeving mode, and the centering parts are distributed in a surrounding mode with the axis between the first limiting part and the second limiting part as the circle center. By means of the three sets of centering components capable of simultaneously gathering and clamping inwards, three non-collinear supporting points can be arranged on the outer diameter of the steel pipe, a stable triangular structure is formed, the overall stability of the device is enhanced, meanwhile, the three sets of supporting points can achieve the three-point centering effect, the center position of the steel pipe can be determined more accurately, and the machining precision of the steel pipe is improved. Measurement errors are reduced, and the accuracy of ovality measurement data is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe processing, and in particular to a device for detecting ovality of steel pipe processing. Background Art

[0002] Steel pipe ovality measurement is a key link in steel pipe quality control and is widely used in the steel pipe manufacturing process in the fields of petroleum, chemical industry, electric power, etc. When measuring the ovality of steel pipes, in order to ensure the accuracy and reliability of the measurement results, centering operation is required. The purpose of the centering operation is to ensure that the axis of the steel pipe is aligned with the axis of the measuring device, so that the straight-line distance from the detection part of the measuring device to the steel pipe is the same, which is convenient for subsequent measurement work.

[0003] In the prior art, two-point centering is mostly used for centering operations. The traditional two-point centering measurement method has significant limitations in practical applications, especially for steel pipe measurement with high precision requirements. The two-point centering method mainly relies on two relative points on the outer diameter of the steel pipe to determine the center. This method is simple in theory, but in actual operation it is easily affected by factors such as processing accuracy and measurement environment, resulting in insufficient repeatability and accuracy of the measurement results. Based on this, we propose a steel pipe processing ovality detection device to solve such problems. Summary of the invention

[0004] In view of the fact that the two-point centering method used in the above-mentioned prior art for centering operation has significant limitations in practical applications, resulting in insufficient repeatability and accuracy of measurement results, the present invention is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a steel pipe processing ovality detection device, comprising: The centering unit comprises a handle, a first position-limiting component of a circular ring structure arranged on one side of the top of the handle, a second position-limiting component arranged on the other side of the top of the handle and symmetrical to the first position-limiting component, a transmission component rotatably sleeved between the first position-limiting component and the second position-limiting component, and three groups of centering components distributed around the axis between the first position-limiting component and the second position-limiting component as the center of the circle, and the two ends of each group of centering components are rotatably connected to the outer side of the first position-limiting component and the inner circle of the transmission component respectively; The measuring unit comprises a driven component rotatably sleeved on the outer end of the second limiting component, a digital dial gauge vertically plugged into the outer side of the top end of the driven component, and the end of the digital dial gauge is perpendicular to the center of the second limiting component, and a limit knob threadedly plugged into one side of the top end of the driven component, and the inner end abuts against the side of the digital dial gauge; The driving unit includes a C-shaped fixing frame, and the two sides of the upper and lower ends of the C-shaped structure of the fixing frame are respectively fixedly connected to the outer diameters of the first limiting component and the second limiting component, two groups of driving components are vertically inserted into the fixing frame, and the two groups of driving components are respectively engaged with the outer diameters of the transmission component and the driven component, a driving component is vertically arranged at the top of the fixing frame, and the lower end of the driving component is engaged with the top ends of the two groups of driving components for transmission, and a conversion component with one end rotatably sleeved on the end of the driving component and the other end extending outward to the outside of the handle.

[0006] As a preferred solution of the steel pipe processing ovality detection device described in the present invention, wherein: the first limiting component includes a first sleeve ring of a circular ring structure, and one end of the transmission component is sleeved on the first sleeve ring, a first limiting ring fixedly sleeved on the outer end of the first sleeve ring, and the first limiting ring is fixedly connected to the top side of the handle, and three groups of equally divided first connecting bolts are surrounded on the outside of the inner end of the first sleeve ring, and one end of the centering component is rotatably connected to the first connecting bolt.

[0007] As a preferred solution of the steel pipe processing ovality detection device described in the present invention, the second limiting component includes a second ring with a circular structure, two groups of second limiting rings fixedly sleeved on both ends of the second ring, a limiting groove located between the two groups of second limiting rings, and the driven component is sleeved on the limiting groove, and a third ring fixedly connected to the inner end of the second ring, and the other end of the transmission component is sleeved on the third ring.

[0008] As a preferred solution of the steel pipe processing ovality detection device described in the present invention, the transmission component includes a sleeve with a circular ring structure, and two groups of sleeves are respectively sleeved on the first sleeve and the third sleeve, a transmission ring fixedly connected to the two groups of transmission rings, and a plurality of groups of teeth meshing with the driving component are equally divided and arranged around the outer diameter of the transmission ring, and three groups of second connecting bolts are equally divided and fixedly connected to the inner diameter of one group of sleeves, and the other end of the centering component is rotatably connected to the second connecting bolt, the second connecting bolt and the first connecting bolt are not in the same vertical direction, and the two are parallel to each other in the vertical direction.

[0009] As a preferred solution of the steel pipe processing ovality detection device described in the present invention, wherein: the centering component includes a first centering rod and a second centering rod with the same structure, and the outer ends of the first centering rod and the second centering rod are rotatably connected to the first connecting bolt and the second connecting bolt respectively, the first centering rod includes a rectangular slide groove opened laterally inside, and the rectangular slide groove has a rectangular structure, a rectangular slider of the rectangular structure arranged on the inner side of one end of the first centering rod, and a sleeve arranged at the other end of the first centering rod, and the sleeve on the first centering rod is rotatably sleeved on the first connecting bolt.

[0010] As a preferred solution of the steel pipe processing ovality detection device described in the present invention, wherein: the driven component includes a circular ring structure and a driven ring that is sleeved and rotatably connected to the second ring, and the driven ring is located in a limiting groove between two groups of second limiting rings, and a plurality of groups of teeth that mesh with the driving component are evenly divided on the outer diameter of the driven ring, and a socket is arranged on one side of the top of the driven ring, and the digital micrometer is vertically inserted into the socket, and the limit knob is transversely threadedly inserted into the socket.

[0011] As a preferred solution of the steel pipe processing ovality detection device described in the present invention, the digital micrometer includes a dial located directly above the socket, a probe arranged vertically below the dial, and the probe is inserted downward through the socket, and a limit slot is vertically opened on the outer wall of the probe, and the limit knob extends horizontally through the socket to the limit slot.

[0012] As a preferred solution of the steel pipe processing ovality detection device described in the present invention, the driving component includes two groups of rotating shafts connected to the fixed frame in a vertical direction, two groups of helical racks spirally wound on the two groups of rotating shafts, and the two groups of helical racks are respectively meshed with teeth on the outer diameters of the transmission ring and the driven ring, and the positive bevel gears and extension rods are respectively arranged at the top ends of the two groups of rotating shafts, and the inverted bevel gear is fixedly arranged at the top end of the extension rod.

[0013] As a preferred solution of the steel pipe processing ovality detection device described in the present invention, the driving assembly includes a driving motor fixedly arranged in the handle in a vertical direction, a rectangular shaft arranged at the axial center position of the driving motor and extending downward to the top of the fixed frame and having a rectangular structure, and a shuttle gear in a shuttle structure slidably inserted on the rectangular shaft in a vertical direction, and the upper and lower ends of the shuttle gear are respectively meshed with the inverted bevel gear and the forward bevel gear for transmission.

[0014] As a preferred solution of the steel pipe processing ovality detection device described in the present invention, the conversion component includes a connecting rod with one end rotatably sleeved on the shuttle gear, and the other end of the connecting rod extends outward to the outside of the handle, and a reinforcement block fixedly connected to the outer end of the connecting rod in the vertical direction, and one side of the reinforcement block abuts against the outer wall of the handle.

[0015] Beneficial effects of the present invention: Through the three groups of centering components set on the centering unit that can be clamped inward at the same time, three non-collinear support points can be set on the outer diameter of the steel pipe to form a stable triangular structure. The triangular support structure can enhance the overall stability of the device and reduce the impact of environmental factors on the measurement results. Through the three groups of centering components that are synchronously in contact with the outer diameter of the steel pipe from three directions, the center position of the steel pipe can be accurately calculated by using the triangle geometric center calculation method combined with the position information of the support points, so as to achieve the effect of three-point centering, and the center position of the steel pipe can be determined more accurately, reducing the measurement error caused by uneven force and slight deformation. By rotating the digital micrometer set on the measuring unit along the outer wall of the steel pipe, the measurement data of different positions on the same cross-section ring of the steel pipe can be directly obtained, ensuring that the measurement points are in the same vertical direction, which helps to reduce the influence of factors such as pipeline deformation and inclination, thereby significantly improving the measurement accuracy, and the measurement length of the probe of the digital micrometer can be adjusted according to the application, which can meet the ovality measurement of steel pipes of different diameters and meet more usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic diagram of the overall structure of the steel pipe processing ovality detection device of the present invention.

[0017] Figure 2 It is a schematic plan view of the overall structure of the steel pipe processing ovality detection device of the present invention.

[0018] Figure 3 It is a schematic plan view of the internal structure of the steel pipe processing ovality detection device of the present invention.

[0019] Figure 4 It is a schematic diagram of the longitudinal section structure plane of the steel pipe processing ovality detection device of the present invention.

[0020] Figure 5 It is a partial structural schematic diagram of the centering unit of the steel pipe processing ovality detection device of the present invention.

[0021] Figure 6 It is a structural schematic diagram of the first limit component and the second limit component of the steel pipe processing ovality detection device of the present invention.

[0022] Figure 7 It is a structural schematic diagram of the transmission components of the steel pipe processing ovality detection device of the present invention.

[0023] Figure 8 It is a structural schematic diagram of the centering component of the steel pipe processing ovality detection device of the present invention.

[0024] Fig. 9 It is a schematic diagram of the structural state of the transmission component and the centering component of the steel pipe processing ovality detection device of the present invention.

[0025] Fig.10 It is a structural schematic diagram of the measuring unit of the steel pipe processing ovality detection device of the present invention.

[0026] Fig.11 It is a structural schematic diagram of a driving unit of a device for detecting ovality of steel pipe processing according to the present invention.

[0027] Fig.12 It is a plan view schematically showing the installation position of the drive unit of the steel pipe processing ovality detection device in the handle of the present invention.

[0028] Reference numerals: 100, centering unit; 101, handle; 101a, slot; 101b, block; 102, first limiting component; 102a, first sleeve; 102b, first limiting ring; 102c, first connecting bolt; 103, second limiting component; 103a, second sleeve; 103b, second limiting ring; 103c, limiting groove; 103d, third sleeve; 104, transmission component; 104a, sleeve; 104b, transmission ring; 104c, second connecting bolt; 105, centering component; 105a, first centering rod; 105b, second centering rod; 105c, rectangular slide; 105d, rectangular slider; 105 e, sleeve; 200, measuring unit; 201, driven component; 201a, driven ring; 201b, socket; 202, digital micrometer; 202a, dial; 202b, probe; 202c, limit slot; 203, limit knob; 300, drive unit; 301, fixed frame; 302, drive component; 302a, rotating shaft; 302b, spiral rack; 302c, extension rod; 302d, inverted bevel gear; 302e, forward bevel gear; 303, drive assembly; 303a, drive motor; 303b, rectangular shaft; 303c, shuttle gear; 304, conversion component; 304a, connecting rod; 304b, reinforcement block. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Example 1 Reference Figure 1-2 , which is the first embodiment of the present invention, includes a steel pipe processing ovality detection device, including: The centering unit 100 includes a handle 101, a first limiting component 102 of a circular ring structure arranged on one side of the top of the handle 101, a second limiting component 103 arranged on the other side of the top of the handle 101 and symmetrical to the first limiting component 102, a transmission component 104 rotatably sleeved between the first limiting component 102 and the second limiting component 103, and three groups of centering components 105 distributed around the axis between the first limiting component 102 and the second limiting component 103 as the center of the circle, and the two ends of each group of centering components 105 are rotatably connected to The first limiting component 102 is on the outer side and the inner circle of the transmission component 104; the handle 101 is used to provide a gripping point when in use, the first limiting component 102 and the second limiting component 103 are respectively fixedly connected to the handle 101, the annular first limiting component 102 and the second limiting component 103 can be sleeved on the steel pipe of the circular tubular structure, and the transmission component 104 can rotate in a circle with the first limiting component 102 and the second limiting component 103 as the rotation axis, and the centering component 105 is a rectangular strip structure that can be changed in length; The measuring unit 200 comprises a driven component 201 rotatably sleeved on the outer end of the second limiting component 103, a digital dial gauge 202 vertically plugged into the outer side of the top end of the driven component 201, and the end of the digital dial gauge 202 is perpendicular to the center of the second limiting component 103, and a limit knob 203 is obtained by threadedly plugging into one side of the top end of the driven component 201 and the inner end abutting against the side of the digital dial gauge 202; the driven component 201 can rotate in a circle with the second limiting component 103 as the axis, and the digital dial gauge 202 plugged into the side of the driven component 201 can move synchronously while rotating, thereby achieving the function of driving the digital dial gauge 202 to collect data around the same circular cross section; The driving unit 300 includes a C-shaped fixed frame 301, and the two sides of the upper and lower ends of the C-shaped structure of the fixed frame 301 are respectively fixedly connected to the outer diameters of the first limiting component 102 and the second limiting component 103, two groups of driving components 302 are vertically inserted into the fixed frame 301, and the two groups of driving components 302 are respectively engaged with the outer diameters of the transmission component 104 and the driven component 201, and a driving component 303 is vertically arranged at the top of the fixed frame 301, and the lower end of the driving component 303 is engaged with the top of the two groups of driving components 303 for transmission. , and a conversion component 304 with one end rotatably sleeved on the end of the driving component 303 and the other end extending outward to the outside of the handle 101; the driving component 303 can be used to provide power for the two groups of driving components 302 to rotate, and the two groups of rotating driving components 302 can respectively drive the transmission component 104 and the driven component 201 to rotate, and the conversion component 304 can provide the driving component 303 and the two groups of driving components 302 for meshing transmission respectively through upward or downward displacement, so the two groups of driving components 302 are not meshed with the driving component 303 at the same time.

[0032] During use, refer to Figure 2 , use the hand-held handle 101 to partially sleeve the first limiting component 102 and the second limiting component 103 on the steel pipe to be measured, keep the conversion component 304 in a lower position, and then start the driving component 303. The driving component 303 drives a group of driving components 302 meshed with the transmission component 104 to rotate through the conversion component 304. The rotating driving component 302 drives the transmission component 104 to rotate, and the rotating transmission component 104 will synchronously drive the three groups of centering components 105 to move. Since the first limiting component 102 remains stationary and the other end of the centering component 105 is connected to the first limiting component 102, the three groups of centering components 105 will synchronously move toward the inner wall of the steel pipe located in the second limiting component 103 and the first limiting component 102. Finally, the three groups of centering components 105 will abut against the outer wall of the steel pipe and form a triangular support structure. At this time, the steel pipe is located on the axis Z between the first limiting component 102 and the second limiting component 103; According to the diameter of the steel pipe, the length of the digital dial gauge 202 extending toward the axis Z of the first limiting component 102 in the plug-in state is adjusted so that the end of the digital dial gauge 202 abuts against the outer wall of the steel pipe. After the adjustment is completed, the position of the digital dial gauge 202 is fixed by the limiting knob 203, and then the position of the conversion component 304 is switched, so that the driving component 303 stops driving the transmission component 104 to rotate, and instead drives the driving component 302 meshing with another group of driven components 201 to rotate, thereby driving the driven component 201 to drive the digital dial gauge 202 to rotate with the axis Z as the center of the circle. During this process, the end of the digital dial gauge 202 will always move along the outer wall of the steel pipe, and then measure the data of each point at this position, analyze and record the data, find the maximum reading and the minimum reading, which correspond to the maximum outer diameter and the minimum outer diameter of the steel pipe respectively, and finally use the calculation formula: (maximum outer diameter - minimum outer diameter) / nominal outer diameter × 100% to calculate the ovality of the steel pipe.

[0033] Example 2 Reference Figure 2 to Figure 9 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that three groups of non-collinear support contacts J are set on the outer diameter of the steel pipe through three groups of centering components 105, forming a stable triangular support structure and realizing three-point centering operation at the same time, thereby more effectively determining the center position of the steel pipe and improving the measurement accuracy and repeatability.

[0034] Compared with Example 1, further, the first limiting component 102 includes a first ring 102a of a circular ring structure, and one end of the transmission component 104 is sleeved on the first ring 102a, a first limiting ring 102b is fixedly sleeved on the outer end of the first ring 102a, and the first limiting ring 102b is fixedly connected to the top side of the handle 101, and three groups of first connecting bolts 102c are equally divided and surrounded on the outside of the inner end of the first ring 102a, and one end of the centering component 105 is rotatably connected to the first connecting bolt 102c, and the transmission component 104 sleeved on the first ring 102a is limited in the horizontal direction by the first limiting ring 102b and will not slide off the first ring 102a in the horizontal direction.

[0035] The second limiting component 103 includes a second ring 103a of an annular structure, two sets of second limiting rings 103b fixedly sleeved at both ends of the second ring 103a, a limiting groove 103c located between the two sets of second limiting rings 103b, and the driven component 201 is sleeved on the limiting groove 103c, and a third ring 103d fixedly connected to the inner end of the second ring 103a, and the other end of the transmission component 104 is sleeved on the third ring 103d, and the first ring 102a and the third ring 103d is respectively clamped on both sides of the transmission component 104, limiting the transmission component 104 in the middle of the two in the horizontal direction, but not limiting it in the circumferential direction. The transmission component 104 can normally rotate in a circle with the first ring 102a and the second limiting ring 103b as the axis, and the driven component 201 located between the two sets of second limiting rings 103b is also limited in the horizontal direction and will not slide in the horizontal direction, but the driven component 201 can rotate in a circle with the second ring 103a as the axis.

[0036] The transmission component 104 includes a sleeve 104a of a circular ring structure, and two groups of sleeves 104a are respectively sleeved on the first sleeve 102a and the third sleeve 103d, a transmission ring 104b fixedly connected between the two groups of transmission rings 104b, and the outer diameter of the transmission ring 104b is equally divided and surrounded by multiple groups of teeth that mesh with the driving component 302, and three groups of second connecting bolts 104c are equally divided and fixedly connected to the inner diameter of one group of sleeves 104a, and the other end of the centering component 105 is fixedly connected to the inner diameter of the second connecting bolt 104c. One end is rotatably connected to the second connecting bolt 104c, the second connecting bolt 104c and the first connecting bolt 102c are not in the same vertical direction, and the two are parallel to each other in the vertical direction. The transmission component 104 is rotatably connected between the first limiting component 102 and the second limiting component 103 through the sleeves 104a on both sides. Due to the engagement of the transmission ring 104b with the limiting knob 203, the limiting knob 203 can drive the transmission ring 104b to drive the transmission component 104 to rotate in a circle as a whole.

[0037] Among them, the centering component 105 includes a first centering rod 105a and a second centering rod 105b with the same structure, and the outer ends of the first centering rod 105a and the second centering rod 105b are rotatably connected to the first connecting bolt 102c and the second connecting bolt 104c respectively. The first centering rod 105a includes a rectangular slide groove 105c opened laterally inside, and the rectangular slide groove 105c has a rectangular structure, a rectangular slider 105d of the rectangular structure arranged on the inner side of one end of the first centering rod 105a, and a sleeve 105e arranged at the other end of the first centering rod 105a, and the sleeve 105e on the first centering rod 105a is rotatably sleeved on the first connecting bolt 102c. Because the first centering rod 105a and the second centering rod 105b have the same structure, the second centering rod 105b is also provided with a corresponding rectangular slide groove 105c, a rectangular slider 105d and a sleeve 105e.

[0038] Furthermore, the first centering rod 105a and the second centering rod 105b are arranged in parallel in the vertical direction, so the two are staggered. Therefore, when the two are synchronously performing circular rotation on the same vertical plane, the two do not interfere with each other in the vertical direction. The first centering rod 105a and the second centering rod 105b extend into each other's rectangular slide groove 105c through the rectangular slider 105d set at their inner ends. Since the rectangular slide groove 105c and the rectangular slider 105d are both rectangular structures, the first centering rod 105a and the second centering rod 105b can only slide on each other's side in a translational manner, so that the side surfaces of the two are always in the same plane, so that when clamping the steel pipe, there is always a contact point J that maintains contact with the outer wall.

[0039] During use, combine Figure 2 and Fig. 9 , the transmission component 104 rotates, and the corresponding second centering rod 105b will be driven to move through the second connecting bolt 104c. Since the other end of the first centering rod 105a is connected to the first connecting bolt 102c, the second centering rod 105b will slide on the surface of the first centering rod 105a while rotating through the rotational connection between the outer end and the second connecting bolt 104c, thereby adapting to the changes brought about by the rotation of the transmission component 104. Due to the continuous rotation of the transmission component 104, the overall length of the centering component 105 will continue to increase, and the increase in length will make the centering rod 105b The distance between the side of the centering component 105 and the axis Z is constantly shortened, and the three sets of centering components 105 move synchronously with the transmission component 104, so that the side of the three sets of centering components 105 is constantly close to the axis Z and shortens the space between the three. At this time, the steel pipe is horizontally inserted in the space between the three sets of centering components 105, and the three sets of centering components 105 will apply thrust from three directions and gradually push it to coincide with the axis Z. At this time, the way the three sets of centering components 105 push the steel pipe achieves the effect of three-point centering. Through the three-point centering method, the center position of the steel pipe can be determined more accurately; Furthermore, the positions where the three groups of centering components 105 contact the outer wall of the steel pipe form three groups of contact points J, which can apply pressure to the steel pipe from three directions, and the distances between the three groups of contact points J are equal, thereby making the force points more uniform and reducing the measurement errors caused by uneven force and slight deformation. At the same time, the three groups of contact points J are not collinear, and cooperate with the three groups of centering components 105 to form a triangular support structure, which can realize setting three non-collinear support points on the outer diameter of the steel pipe to form a stable triangular structure. The triangular support structure can enhance the overall stability of the device and reduce the impact of environmental factors on the measurement results.

[0040] The remaining structures are the same as those of Example 1.

[0041] Example 3 Reference Figure 2 and Fig.10 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that it performs circular rotation along the outer wall of the steel pipe to be measured, and can directly obtain measurement data of different positions on the same cross-section ring of the steel pipe, thereby ensuring the accuracy of the measurement data.

[0042] Compared with Example 2, further, the driven component 201 includes a circular ring structure and a driven ring 201a that is sleeved and rotatably connected to the second ring 103a, and the driven ring 201a is located in the limiting groove 103c between the two groups of second limiting rings 103b, and a plurality of groups of teeth that mesh with the driving component 302 are evenly divided on the outer diameter of the driven ring 201a, and a socket 201b is arranged on one side of the top of the driven ring 201a, and the digital micrometer 202 is vertically inserted into the socket 201b, and the limiting knob 203 is transversely threadedly inserted into the socket 201b, and through the engagement of the driving component 302 with the driven ring 201a, the driving component 302 can drive the driven ring 201a to rotate with the second ring 103a as the axis.

[0043] Among them, the digital micrometer 202 includes a dial 202a located directly above the socket 201b, a probe 202b arranged vertically below the dial 202a, and the probe 202b is inserted downward through the socket 201b, and a limit slot 202c is vertically opened on the outer wall of the probe 202b, and the limit knob 203 extends horizontally through the socket 201b to the limit slot 202c. The probe 202b is slidably inserted in the socket 201b and can be telescopically displaced in the vertical direction. The limit knob 203 extending into the limit slot 202c can limit and fix the probe 202b by abutting.

[0044] During use, according to the diameter of the steel pipe to be measured, the extended length of the probe 202b is adjusted so that the end of the probe 202b abuts against the outer wall of the steel pipe, and then the limit knob 203 is rotated to extend it into the limit slot 202c, and the probe 202b is firmly limited so that it cannot be separated from the socket 201b. It can be seen that the measuring length of the probe 202b can be adjusted according to the diameter of the steel pipe to be measured, so that the device can meet the requirements of the ovality measurement of steel pipes with different diameters. Since the centering unit 100 has fixedly limited the device on the steel pipe, the driving component 302 drives the driven component 201 to rotate as a whole. The rotating driven component 201 can drive the digital micrometer 202 to rotate in a circle along the outer wall of the steel pipe as a whole, and the motion trajectory of the digital micrometer 202 is in the same cross-section ring, thereby achieving the acquisition of measurement data at different positions on the same vertical cross-section of the steel pipe in a circular manner, which helps to reduce the influence of factors such as pipeline deformation and inclination, thereby significantly improving the measurement accuracy and ensuring the accuracy of the measurement data.

[0045] Example 4 Reference Figure 11-12 , which is the fourth embodiment of the present invention. This embodiment is different from the third embodiment in that by switching the position state of the conversion component 304, a single drive motor 303a is implemented to drive the centering unit 100 to perform automatic centering clamping and the measuring unit 200 to surround the steel pipe for data collection and measurement.

[0046] Compared with Example 3, further, the driving component 302 includes two groups of rotating shafts 302a connected to the fixed frame 301 in a vertical direction, two groups of spiral racks 302b spirally wound on the two groups of rotating shafts 302a, and the two groups of spiral racks 302b are respectively meshed with teeth on the outer diameter of the transmission ring 104b and the driven ring 201a, the positive bevel gears 302e and the extension rod 302c are respectively arranged on the top of the two groups of rotating shafts 302a, and the inverted bevel gear 302d fixedly arranged on the top of the extension rod 302c, the spiral structure of the spiral racks 302b is meshed with the teeth on the outer side of the sleeve 104a and the driven ring 201a, which can form a worm gear structure, and the worm gear has a self-locking performance, that is, when the worm does not rotate, the gear cannot rotate. Therefore, after the centering unit 100 clamps the device as a whole on the steel pipe, the driving component 302 is stopped to ensure that the device is firmly held on the steel pipe.

[0047] Furthermore, the driving component 302 equipped with a forward bevel gear 302e is meshed with the transmission ring 104b, and the driving component 302 equipped with an inverted bevel gear 302d is meshed with the driven ring 201a. The forward bevel gear 302e is a structure that is thin at the top and thick at the bottom, and is meshed with the bottom of the shuttle gear 303c for transmission, while the inverted bevel gear 302d is a structure that is thin at the bottom and thick at the top, and can be meshed with the top of the shuttle gear 303c for transmission. At the same time, there is a height difference between the forward bevel gear 302e and the inverted bevel gear 302d.

[0048] Among them, the driving component 303 includes a driving motor 303a fixedly arranged in the handle 101 in the vertical direction, a rectangular shaft 303b with a rectangular structure arranged at the axial center position of the driving motor 303a and extending downward to the top of the fixed frame 301, and a shuttle gear 303c with a shuttle structure slidably inserted on the rectangular shaft 303b in the vertical direction, and the upper and lower ends of the shuttle gear 303c are respectively engaged with the inverted bevel gear 302d and the forward bevel gear 302e for transmission, the rectangular shaft 303b with a rectangular structure and the shuttle gear 303c are limited in the circumferential direction, and can rotate circumferentially with the rectangular shaft 303b, and the shuttle gear 303c can slide in the vertical direction along the rectangular shaft 303b, and the shuttle gear 303c with a shuttle structure has a top end that matches and meshes with the inverted bevel gear 302d, and a lower end that matches and meshes with the forward bevel gear 302e.

[0049] Furthermore, a slot 101a is provided on the side of the handle 101 , one end of the conversion component 304 passes through the slot 101a and extends to the outside, a card block 101b is laterally provided in the middle of the slot 101a , and one side of the card block 101b is fixedly connected to the handle 101 .

[0050] Among them, the conversion component 304 includes a connecting rod 304a one end of which is rotatably sleeved on the shuttle gear 303c, and the other end of the connecting rod 304a extends outward to the outside of the handle 101, and a reinforcement block 304b fixedly connected to the outer end of the connecting rod 304a in the vertical direction, and one side of the reinforcement block 304b abuts against the outer wall of the handle 101. The connecting rod 304a and the shuttle gear 303c limit each other in the vertical direction, which can drive the shuttle gear 303c to slide in the vertical direction. At the same time, the reinforcement block 304b can exert a horizontal force between the conversion component 304 as a whole and the handle 101, thereby keeping the conversion component 304 in a horizontally set state.

[0051] During use, the conversion component 304 is pushed downward so that the connecting rod 304a is clamped under the clamping block 101b. At this time, the end of the shuttle gear 303c is in abutment and meshing with the positive bevel gear 302e. The driving motor 303a rotates to drive the driving component 302 corresponding to the positive bevel gear 302e to rotate, and then drives the transmission component 104 to rotate; conversely, the conversion component 304 is pushed upward to disconnect the meshing of the positive bevel gear 302e and the lower end of the shuttle gear 303c, while the top of the shuttle gear 303c is in abutment and meshing with the inverted bevel gear 302d, which can drive the corresponding driving component 302 to drive the driven component 201 to rotate; from the above, it can be seen that only by adjusting the position of the conversion component 304, the centering unit 100 and the measuring unit 200 can be driven to perform three-point centering and surrounding measurement respectively, making the operation of the device more convenient and simple, and can significantly improve work efficiency.

[0052] The remaining structure is the same as that of Example 3.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A steel pipe processing ovality detection device, characterized in that: include, The centering unit (100) comprises a handle (101), a first limiting component (102) of a circular ring structure arranged on one side of the top of the handle (101), a second limiting component (103) arranged on the other side of the top of the handle (101) and symmetrical to the first limiting component (102), a transmission component (104) rotatably sleeved between the first limiting component (102) and the second limiting component (103), and three groups of centering components (105) distributed around the axis line between the first limiting component (102) and the second limiting component (103) as the center of the circle, and the two ends of each group of centering components (105) are respectively rotatably connected to the outer side of the first limiting component (102) and the inner circle of the transmission component (104); The measuring unit (200) comprises a driven component (201) rotatably sleeved on the outer end of the second limiting component (103), a digital dial gauge (202) vertically plugged into the outer side of the top end of the driven component (201), the end of the digital dial gauge (202) being perpendicular to the center of the second limiting component (103), and a limit knob (203) threadedly plugged into one side of the top end of the driven component (201), the inner end of which abuts against the side of the digital dial gauge (202); The driving unit (300) comprises a fixing frame (301) of a C-shaped structure, wherein the two sides of the upper and lower ends of the C-shaped structure of the fixing frame (301) are respectively fixedly connected to the outer diameters of the first limiting component (102) and the second limiting component (103); two groups of driving components (302) vertically plugged into the fixing frame (301), and the two groups of driving components (302) are respectively meshed with the outer diameters of the transmission component (104) and the driven component (201); a driving component (303) vertically arranged at the top of the fixing frame (301), and the lower end of the driving component (303) is meshed with the top ends of the two groups of driving components (303) for transmission; and a conversion component (304) having one end rotatably sleeved on the end of the driving component (303) and the other end extending outwardly to the outside of the handle (101).

2. The steel pipe processing ovality detection device according to claim 1, characterized in that: The first limiting component (102) comprises a first sleeve ring (102a) of a circular ring structure, one end of the transmission component (104) is sleeved on the first sleeve ring (102a), a first limiting ring (102b) is fixedly sleeved on the outer end of the first sleeve ring (102a), and the first limiting ring (102b) is fixedly connected to the top side of the handle (101), and three groups of first connecting bolts (102c) are equally divided and surround the outer side of the inner end of the first sleeve ring (102a), and one end of the centering component (105) is rotatably connected to the first connecting bolt (102c).

3. The steel pipe processing ovality detection device according to claim 1, characterized in that: The second limiting component (103) comprises a second ring (103a) of an annular structure, two sets of second limiting rings (103b) fixedly sleeved on two ends of the second limiting ring (103a), a limiting groove (103c) located between the two sets of second limiting rings (103b), the driven component (201) being sleeved on the limiting groove (103c), and a third ring (103d) fixedly connected to the inner end of the second ring (103a), and the other end of the transmission component (104) being sleeved on the third ring (103d).

4. The steel pipe processing ovality detection device according to claim 1, characterized in that: The transmission component (104) comprises a sleeve (104a) of a circular ring structure, and two groups of sleeves (104a) are respectively sleeved on the first sleeve ring (102a) and the third sleeve ring (103d), a transmission ring (104b) fixedly connected between the two groups of transmission rings (104b), and a plurality of groups of teeth meshing with the driving component (302) are equally arranged around the outer diameter of the transmission ring (104b), and three groups of second connecting bolts (104c) are equally fixedly connected to the inner diameter of one group of sleeves (104a), and the other end of the centering component (105) is rotatably connected to the second connecting bolt (104c), and the second connecting bolt (104c) and the first connecting bolt (102c) are not in the same vertical direction, and the two are parallel to each other in the vertical direction.

5. The steel pipe processing ovality detection device according to claim 1, characterized in that: The centering component (105) comprises a first centering rod (105a) and a second centering rod (105b) of the same structure, and the outer ends of the first centering rod (105a) and the second centering rod (105b) are rotatably connected to the first connecting bolt (102c) and the second connecting bolt (104c) respectively, the first centering rod (105a) comprises a rectangular slide groove (105c) opened laterally inside, and the rectangular slide groove (105c) is a rectangular structure, a rectangular slider (105d) of the rectangular structure is arranged on the inner side of one end of the first centering rod (105a), and a sleeve (105e) is arranged on the other end of the first centering rod (105a), and the sleeve (105e) on the first centering rod (105a) is rotatably sleeved on the first connecting bolt (102c).

6. The steel pipe processing ovality detection device according to claim 1, characterized in that: The driven component (201) comprises a driven ring (201a) having a circular ring structure and being sleeved and rotatably connected to the second sleeve ring (103a), and the driven ring (201a) is located in a limiting groove (103c) between two sets of second limiting rings (103b), and a plurality of sets of teeth meshing with the driving component (302) are equally divided on the outer diameter of the driven ring (201a), and a socket (201b) is arranged on one side of the top end of the driven ring (201a), and the digital micrometer (202) is vertically inserted into the socket (201b), and the limiting knob (203) is transversely threadedly inserted into the socket (201b).

7. The steel pipe processing ovality detection device according to claim 1, characterized in that: The digital display micrometer (202) comprises a dial (202a) located directly above the socket (201b), a probe (202b) vertically arranged below the dial (202a), the probe (202b) being inserted downward through the socket (201b), and a limit slot (202c) vertically opened on the outer wall of the probe (202b), and a limit knob (203) extending horizontally through the socket (201b) into the limit slot (202c).

8. The steel pipe processing ovality detection device according to claim 1, characterized in that: The driving component (302) comprises two groups of rotating shafts (302a) connected to the fixed frame (301) in a vertical direction, two groups of spiral racks (302b) spirally wound on the two groups of rotating shafts (302a), and the two groups of spiral racks (302b) are respectively meshed with teeth on the outer diameters of the transmission ring (104b) and the driven ring (201a), a positive bevel gear (302e) and an extension rod (302c) respectively arranged at the top ends of the two groups of rotating shafts (302a), and an inverted bevel gear (302d) fixedly arranged at the top end of the extension rod (302c).

9. The steel pipe processing ovality detection device according to claim 1, characterized in that: The driving assembly (303) comprises a driving motor (303a) fixedly arranged in a vertical direction in the handle (101), a rectangular shaft (303b) arranged at the axial center of the driving motor (303a) and extending downward to the top of the fixing frame (301) and having a rectangular structure, and a shuttle gear (303c) in a shuttle structure slidably inserted on the rectangular shaft (303b) in a vertical direction, wherein the upper and lower ends of the shuttle gear (303c) are respectively meshed with the inverted bevel gear (302d) and the forward bevel gear (302e) for transmission.

10. The steel pipe processing ovality detection device according to claim 9, characterized in that: The conversion component (304) comprises a connecting rod (304a) having one end rotatably sleeved on the shuttle gear (303c), and the other end of the connecting rod (304a) extending outward to the outside of the handle (101), and a reinforcing block (304b) fixedly connected to the outer end of the connecting rod (304a) in a vertical direction, and one side of the reinforcing block (304b) abuts against the outer wall of the handle (101).

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