Piping circumferential segmentation marking device
Patent Information
- Application Number
- CN202522519675.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-27
AI Technical Summary
一方面，划线精度严重依赖操作人员的技能水平与经验，主观误差较大，难以保证角度控制的一致性，尤其在多段等分划线时，累计误差问题更为明显；另一方面，操作过程繁琐，需反复测量、标记，效率低下，且对于大管径管道，操作人员需围绕管道多次移动作业，劳动强度大幅增加
本装置通过角度刻度盘的精准刻度与指针的配合定位，结合支撑座与支撑柱的同轴固定结构，有效控制分段角度误差，确保划线精度，并且本装置结构简单、拆装方便，通过定位螺母快速固定角度、定位尺快速对齐刻度，可连续完成多段划线，大幅降低操作复杂度，而且本装置借助螺纹连接实现支撑柱长度调节，适配不同管径管道，角度刻度盘的完整刻度覆盖各类分段角度需求，具有良好的适用性。
Smart Images
Figure CN224914749U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of auxiliary technology for pipe processing, and specifically relates to a pipe circumferential segmentation marking device. Background Technology
[0002] In numerous fields such as petrochemicals, municipal water supply, and energy transmission, pipelines serve as the core transport carriers, and their processing and installation quality directly affects the operational stability and safety of the entire system. Circumferential segmentation is a high-frequency and critical fundamental process in pipeline processing and installation. Whether it's for pipe diameter reduction and changeover fabrication, or subsequent cutting, welding, and accessory installation, precise circumferential segmentation marking is essential. Accurate circumferential marking ensures the processing precision of each step, reduces assembly errors, improves the sealing and structural strength of pipe connections, and ultimately guarantees the long-term reliable operation of the pipeline system. Therefore, its technical level has a significant impact on the quality and efficiency of the entire pipeline project. With the expansion of industrial production scale and technological upgrades, pipeline application scenarios are becoming increasingly diverse, and the use of large-diameter pipelines and pipelines with high precision requirements is becoming more widespread, leading to continuously increasing technical requirements for circumferential segmentation marking.
[0003] However, the current industry practice for marking circumferential segments of pipelines still largely relies on traditional methods. In most cases, operators manually mark lines based solely on their experience, using simple measuring tools such as tape measures and protractors. This method has significant limitations. On the one hand, the accuracy of the marking heavily depends on the operator's skill level and experience, resulting in substantial subjective errors and difficulty in ensuring consistent angle control, especially when marking multiple equal segments, where cumulative errors are more pronounced. On the other hand, the process is cumbersome, requiring repeated measurements and markings, leading to low efficiency. Furthermore, for large-diameter pipelines, operators need to move around the pipeline multiple times, significantly increasing labor intensity. With the increasing demands for precision and efficiency in pipeline processing in industrial production, particularly in large-diameter pipeline construction or high-precision pipeline component processing scenarios, traditional marking methods are no longer sufficient to meet actual production needs. Therefore, a new method for circumferential segmented pipeline marking is urgently needed. Utility Model Content
[0004] To address some or all of the technical problems existing in the prior art, this utility model provides a pipe circumferential segmentation marking device, including a support base disposed inside the pipe, a first support column disposed at the top of the support base, a second support column disposed at the bottom of the support base, an angle scale disposed on one side of the support base, a positioning nut disposed on one side of the angle scale, a positioning ruler abutting against the circumference of the pipe, a pointer connected to one end of the positioning ruler, and a marking pen disposed on one side of the positioning ruler. The angle scale is uniformly marked with graduations along the circumference, and the pointer corresponds to the graduations. The top of the first support column and the bottom of the second support column both abut against the inner wall of the pipe. The angle scale is hinged to the support base, and the angle scale can be rotated by the positioning nut.
[0005] Furthermore, in the above-mentioned pipe circumferential segmentation marking device, the support base includes a threaded pipe and a fixed pipe that are perpendicular to each other. One end of the threaded pipe is threaded to the first support column, and the other end is threaded to the second support column. The end of the fixed pipe is fixedly connected to the angle scale.
[0006] Furthermore, in the above-mentioned pipe circumferential segmentation marking device, the first support column and the support base are connected by a thread, and the extension length of the first support column can be adjusted by rotating the first support column.
[0007] Furthermore, in the above-mentioned pipe circumferential segmentation marking device, the second support column and the support base are connected by a thread, and the extension length of the second support column can be adjusted by rotating the second support column.
[0008] Furthermore, in the above-mentioned pipe circumferential segmentation marking device, an adjusting nut is provided between the pointer and the positioning ruler, and the radial position of the pointer along the pipe can be controlled by rotating the adjusting nut.
[0009] Furthermore, in the aforementioned pipe circumferential segmentation marking device, the scale includes 0°~360°.
[0010] Furthermore, in the aforementioned pipe circumferential segmentation marking device, the positioning ruler is formed by two positioning plates vertically joined together, and a handle is provided on the outer periphery of the joint.
[0011] The pipe circumferential segmentation marking device of this utility model has the following advantages and beneficial effects: This device uses the precise scale of the angle dial and the pointer for positioning, combined with the coaxial fixing structure of the support base and support column, to effectively control the segmented angle error and ensure the accuracy of the scribing. Furthermore, the device has a simple structure and is easy to assemble and disassemble. The angle is quickly fixed by the positioning nut, and the positioning ruler quickly aligns with the scale, allowing for continuous scribing of multiple segments, significantly reducing operational complexity. Moreover, the device uses a threaded connection to adjust the length of the support column, adapting to pipes of different diameters. The complete scale of the angle dial covers various segmented angle requirements, demonstrating excellent applicability. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for further understanding of the embodiments of this utility model and constitute a part of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the circumferential segmentation marking device for pipelines according to this utility model; Figure 2 This is a schematic diagram of the circumferential segmentation marking device for pipelines according to this utility model.
[0013] Explanation of reference numerals in the attached figures: 1. Support base; 2001. First support column; 2002. Second support column; 3. Angle scale; 4. Positioning nut; 5. Pointer; 6. Positioning ruler; 7. Marking pen; 8. Pipe. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0015] like Figure 1 , Figure 2As shown, this utility model discloses a pipe circumferential segmentation marking device, including a support base 1 disposed inside the pipe 8, a first support column 2001 disposed on the top of the support base 1, a second support column 2002 disposed on the bottom of the support base 1, an angle scale 3 disposed on one side of the support base 1, a positioning nut 4 disposed on one side of the angle scale 3, a positioning ruler 6 abutting against the circumference of the pipe 8, a pointer 5 connected to one end of the positioning ruler 6, and a marking pen 7 disposed on one side of the positioning ruler 6. The angle scale 3 is uniformly marked circumferentially. The instrument has a scale, with pointer 5 corresponding to the scale. The top of the first support column 2001 and the bottom of the second support column 2002 both abut against the inner wall of the pipe 8. The angle scale 3 is hinged to the support base 1. The angle scale 3 can be rotated by the positioning nut 4. The positioning nut 4 is set at the connection between the angle scale 3 and the fixed pipe. When the angle scale 3 is rotated to the preset position, tightening the positioning nut 4 can fix the angle scale 3 by friction, preventing it from shifting angle during the scribing process and ensuring the consistency of angles in multiple scribing segments.
[0016] In one specific embodiment, in the pipe circumferential segmentation marking device of this utility model, the support base 1 includes a threaded pipe and a fixed pipe that are perpendicular to each other. One end of the threaded pipe is threaded to the first support column 2001, and the other end is threaded to the second support column 2002. The end of the fixed pipe is fixedly connected to the angle scale 3. More specifically, the threaded pipe and the fixed pipe are an integrated structure that is vertically connected. The threaded pipe provides a foundation for the installation of the support column, while the fixed pipe provides a stable installation reference for the angle scale 3. The vertical arrangement of the two ensures that the surface of the angle scale 3 is perpendicular to the axis of the pipe 8, providing a precise reference for circumferential angle measurement.
[0017] In one specific embodiment, in the pipe circumferential segmentation marking device of this utility model, the first support column 2001 and the support base 1 are threadedly connected. The extension length of the first support column 2001 can be adjusted by rotating the first support column 2001. The second support column 2002 and the support base 1 are threadedly connected. The extension length of the second support column 2002 can be adjusted by rotating the second support column 2002. During operation, the length of the support column extending out of the threaded pipe can be changed by rotating the support column, so that the top end of the first support column 2001 and the bottom end of the second support column 2002 are tightly abutted against the inner wall of the pipe 8. The device is fixed at the axial position of the pipe 8 by using the two-point support principle, which avoids the device from shifting during the marking process and ensures the accuracy of angle measurement. This threaded adjustment method is simple to operate and can be flexibly adapted to the changes in the inner diameter of the pipe 8, improving the compatibility of the device with pipes 8 of different specifications.
[0018] In one specific embodiment, in the pipe circumferential segmentation marking device of this utility model, an adjusting nut is provided between the pointer 5 and the positioning ruler 6. By rotating the adjusting nut, the radial position of the pointer 5 along the pipe 8 can be controlled. The connection between the adjusting nut and the positioning ruler 6 is provided with a threaded structure. Rotating the adjusting nut can drive the pointer 5 to move radially along the pipe 8, so that the tip of the pointer 5 is accurately aligned with the scale line of the angle scale 3, avoiding angle measurement errors caused by the position deviation of the pointer 5. It is especially suitable for marking requirements of pipes 8 of different sizes.
[0019] As one specific implementation, in the pipe circumferential segmentation marking device of this utility model, the scale includes 0°~360°.
[0020] As a specific implementation, in the pipe circumferential segmentation marking device of this utility model, the positioning ruler 6 is formed by two positioning plates vertically spliced together. The two positioning plates are used to abut against the circumferential surface of the pipe 8 to ensure positioning stability. One of the positioning plates provides an installation and guiding reference for the marking pen 7. A handle is provided on the outer periphery of the splicing part. The handle is made of non-slip material, which makes it easy for the operator to hold and move the positioning ruler 6 along the circumference of the pipe 8, thus improving the ease of operation.
[0021] The working principle of this utility model's pipe circumferential segmentation marking device is as follows: First, place the pipe 8 to be processed on a stable support surface, ensuring that the axis of the pipe 8 is horizontal. Then, place the entire device inside the pipe 8. Rotate the first support column 2001 and the second support column 2002 respectively, so that their ends are evenly stressed and tightly abut against the inner wall of the pipe 8, completing the coaxial fixation of the device. At this time, the surface of the angle scale 3 is parallel to the axis of the pipe 8. According to the circumferential segmentation requirements of the pipe 8, loosen the positioning nut 4, rotate the angle scale 3 to the preset angle position, and then tighten the positioning nut 4 again to fix the angle scale 3. Then, adjust the nut to adjust the angle scale 3. Position pointer 5 so that its tip aligns with the initial scale line on the angle dial 3. The operator holds the handle of positioning ruler 6, keeping it against the circumference of pipe 8. Move positioning ruler 6 circumferentially along pipe 8 to the designated position. Then, use the scribing pen 7 to draw the first circumferential segment line on the surface of pipe 8. After completing the initial scribing, there is no need to move the entire device. Simply rotate positioning ruler 6 according to the segment angle requirements to align pointer 5 with the next scale line. Repeat the above scribing steps to complete the drawing of all circumferential segment lines, and finally complete the circumferential segment scribing operation of pipe 8.
[0022] In summary, compared with the prior art, the pipe circumferential segmentation marking device of this utility model has the following advantages and beneficial effects: This device uses the precise scale of the angle dial 3 and the pointer 5 for positioning, combined with the coaxial fixing structure of the support base 1 and the support column, to effectively control the segmented angle error and ensure the scribing accuracy. In addition, the device has a simple structure and is easy to assemble and disassemble. The angle can be quickly fixed by the positioning nut 4 and the positioning ruler 6 can be quickly aligned with the scale. It can continuously complete multiple segments of scribing, which greatly reduces the complexity of operation. Moreover, the device uses a threaded connection to realize the adjustment of the length of the support column, which can be adapted to pipes with different diameters 8. The complete scale of the angle dial 3 covers various segmented angle requirements and has good applicability.
[0023] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement state shown in the accompanying drawings.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A pipe circumferential segmentation marking device, characterized in that, The pipe circumferential segmentation marking device includes a support base disposed inside the pipe, a first support column disposed at the top of the support base, a second support column disposed at the bottom of the support base, an angle scale disposed on one side of the support base, a positioning nut disposed on one side of the angle scale, a positioning ruler abutting against the circumference of the pipe, a pointer connected to one end of the positioning ruler, and a marking pen disposed on one side of the positioning ruler. The angle scale is evenly marked with graduations along the circumference, and the pointer corresponds to the graduations. The top of the first support column and the bottom of the second support column both abut against the inner wall of the pipe. The angle scale is hinged to the support base, and the angle scale can be rotated by the positioning nut.
2. The pipe circumferential segmentation marking device according to claim 1, characterized in that, The support base includes a threaded tube and a fixed tube that are perpendicular to each other. One end of the threaded tube is threaded to the first support column, and the other end is threaded to the second support column. The end of the fixed tube is fixedly connected to the angle scale.
3. The pipe circumferential segmentation marking device according to claim 1, characterized in that, The first support column and the support base are connected by a thread, and the extension length of the first support column can be adjusted by rotating the first support column.
4. The pipe circumferential segmentation marking device according to claim 1, characterized in that, The second support column is threadedly connected to the support base, and the extension length of the second support column can be adjusted by rotating the second support column.
5. The pipe circumferential segmentation marking device according to claim 1, characterized in that, An adjusting nut is provided between the pointer and the positioning ruler. By rotating the adjusting nut, the radial position of the pointer along the pipe can be controlled.
6. The pipe circumferential segmentation marking device according to claim 1, characterized in that, The scale ranges from 0° to 360°.
7. The pipe circumferential segmentation marking device according to claim 1, characterized in that, The positioning ruler is composed of two positioning plates that are vertically joined together, and a handle is provided on the outer periphery of the joint.