Elbow ovality detection device

Abstract

The invention relates to the field of pipe fitting detection, and provides a bent pipe ovality detection device, which comprises a fixing assembly and a measuring assembly, and is characterized in that the fixing assembly is suitable for horizontally fixing a to-be-detected bent pipe; the measuring assembly comprises a base, a rotating shaft, a rotating rod and a measuring part, the base and the fixing assembly are arranged in a spaced mode in the vertical direction, and the base is suitable for conducting position marking on the ends of the inner side wall and the outer side wall of the corresponding to-be-measured elbow; the rotating shaft is rotationally arranged on the base in the vertical direction; the rotating rod is arranged in the horizontal direction, one end of the rotating rod is connected with the rotating shaft, and the other end of the rotating rod extends to the position mark. The measuring part and the rotating shaft are arranged at an interval, and the measuring part has a telescopic free end which is connected with the rotating shaft. The device is simple in structure, convenient to operate, capable of accurately measuring the diameter change of the bending position on the bent pipe, capable of improving the detection precision, suitable for more bent pipe types and wide in application range.

Description

Technical Field

[0001] The invention relates to the field of pipe fitting detection and provides a device for detecting the ovality of a bent pipe. Background Art

[0002] At present, the detection device for the ovality of steel pipes is usually used for the detection of straight tubes, but its use is extremely limited. After all, it is impossible to make a steel pipe completely straight, and it can only be achieved under relatively ideal conditions. There will be more or less errors in actual measurement, and the structure of the ovality detection device for bent pipes is relatively complicated, the test results are not accurate enough, and the scope of application is relatively small. Summary of the invention

[0003] An embodiment of the present invention provides a device for detecting the ovality of a bent pipe to solve one of the defects in the related art, achieves a simple structure and convenient operation, can accurately measure the diameter change of the bending position on the bent pipe, improves the detection accuracy, and adapts to a wider range of bent pipe types, thereby achieving a wide range of applications.

[0004] The embodiment of the present invention provides a device for detecting the ovality of a bent pipe, comprising: A fixing assembly, wherein the fixing assembly is suitable for horizontally fixing the bent pipe to be tested; A measuring assembly, comprising a base, a rotating shaft, a rotating rod and a measuring component; The base is spaced apart from the fixing assembly in the vertical direction, and the base is suitable for marking positions at the ends of the inner side wall and the outer side wall corresponding to the bent pipe to be tested; The rotating shaft is rotatably arranged on the base along the vertical direction; The rotating rod is arranged in the horizontal direction, one end of the rotating rod is connected to the rotating shaft, and the other end of the rotating rod extends to the position mark; The measuring component is spaced apart from the rotating shaft, and the measuring component has a retractable free end, and the free end is connected to the rotating shaft.

[0005] According to one embodiment of the present invention, the fixing assembly comprises: A fixing ring, wherein the fixing ring is a circular ring; An adjusting component is movably connected to the fixing ring and is suitable for fixing the bent pipe to be tested inside the fixing ring.

[0006] According to one embodiment of the present invention, the adjusting component comprises: Bolts, the fixing ring is provided with threaded holes, and the bolts are screwed into the inner side of the fixing ring through the threaded holes; A buckle is arranged on the inner side of the fixing ring and connected with the bolt.

[0007] According to one embodiment of the present invention, the measuring component further comprises: A main gear, the main gear is coaxially connected to the rotating shaft, and the main gear is arranged on the inner side of the base; At least one auxiliary gear is disposed around the main gear and meshes with the main gear.

[0008] According to an embodiment of the present invention, an indicator block is provided at the end of the rotating rod in contact with the base, and the lower surface of the indicator block is in contact with the upper end surface of the base.

[0009] According to one embodiment of the present invention, the measuring component further comprises a reference ruler, on which is provided a reference ruler a reference relationship between a length value of the measuring component and a curvature value of the bend to be measured.

[0010] According to an embodiment of the present invention, the fixing assembly further comprises a placing tray, the placing tray is arranged at the upper end of the base, the measuring component is arranged on the placing tray, and the rotating shaft passes through the placing tray.

[0011] According to one embodiment of the present invention, the measuring component comprises: A measuring tape, the free end of which is connected to the rotating shaft; A fixing rod is arranged at a distance from the rotating shaft, and the measuring tape is telescopically connected to the fixing rod.

[0012] According to one embodiment of the present invention, a winding rod is provided at the upper end of the rotating shaft, the winding rod is connected to the fixing ring, and the free end of the measuring tape is connected to the winding rod.

[0013] According to one embodiment of the present invention, it also includes: An operating table, on which the reference ruler and the measuring component are both arranged; A tripod supports the operating table and is suitable for adjusting the levelness of the operating table.

[0014] The device for detecting the ovality of a bent pipe provided by the present invention mainly comprises a fixing assembly and a measuring assembly. The fixing assembly is used to fix the bent pipe to be tested horizontally to ensure that the position of the bent pipe to be tested is stable during the detection process. The measuring assembly is mainly composed of a base, a rotating shaft, a rotating rod and a measuring component. The base is arranged below the fixing assembly, that is, the base is located below the bent pipe to be tested, the rotating shaft is vertically installed inside the base, the rotating rod is horizontally arranged, and one end is connected to the rotating shaft, and the rotating rod extends from the rotating shaft to the upper end surface of the base, and the free end of the measuring component is fixed on the rotating shaft, and the measuring component is a retractable component that can change in length.

[0015] When measuring the ovality of a bent pipe, first fix the bent pipe to be measured by a fixing component to keep it horizontal, mark the corresponding positions of the ends of the inner wall and the outer wall of the bent pipe to be measured on the upper end surface of the base, and then rotate the shaft to drive the rotating rod to reach the marks on the inner wall and the outer wall of the bent pipe to be measured on the base respectively. While the rotating rod rotates, the measuring component and the rotating shaft are synchronously extended, and the free end of the measuring component is wrapped around the rotating shaft. When the rotating rod reaches the two position marks and stops rotating, the lengths of the measuring component are recorded twice respectively. According to the indications on the measuring component, the curvature of the inner wall and the curvature of the outer wall of the bent pipe to be measured are obtained accordingly, and finally the ovality is calculated based on the curvature.

[0016] The present invention measures the bending length of the inner wall of the bend pipe to be measured by a measuring component, converts the curvature of the inner wall of the bend pipe to be measured by the bending length of the inner wall, and repeats the above steps to measure the curvature of the outer wall of the bend pipe to be measured, and then compares the two data of the curvature of the inner wall and the curvature of the outer wall to measure its ellipticity. By recording the end positions of the inner wall and the outer wall of the bend pipe on the base, the measuring component is extended under the action of the rotating shaft and the rotating rod to indicate the length change of the inner wall and the outer wall of the bend pipe to be measured, thereby converting the curvature and obtaining the ellipticity. The present invention has a simple structure and is easy to operate. It can accurately measure the diameter change of the curved part on the bend pipe, improve the detection accuracy, and adapt to more types of bend pipes at the same time, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is one of the schematic diagrams of the structure of the device for detecting the ovality of a bent pipe provided in an embodiment of the present invention; Figure 2 This is the second schematic diagram of the structure of the device for detecting the ovality of a bent pipe provided in an embodiment of the present invention; Figure 3 is a schematic structural diagram of a main gear and a sub-gear of a device for detecting ovality of a bent pipe provided in an embodiment of the present invention; Figure 4 It is a schematic diagram of markings on a base of a device for detecting ovality of a bent pipe provided in an embodiment of the present invention.

[0019] Reference numerals: 100, fixing assembly; 110, fixing ring; 120, adjusting component; 121, bolt; 122, buckle; 130, storage tray; 200, measuring assembly; 210, base; 220, rotating shaft; 221, winding rod; 230, rotating rod; 231, indicating block; 240, measuring component; 241, measuring tape; 242, fixing rod; 260, main gear; 270, secondary gear; 280, reference ruler; 300, operating table; 400, tripod; 500, chassis; 600, bent pipe to be tested; 610, inner wall; 620, outer wall. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0023] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] In addition, in the description of the embodiments of the present invention, unless otherwise specified, when "multiple", "multiple roots" or "multiple groups" appear, it means two or more, and "several", "several roots" or "several groups" means one or more.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0026] like Figures 1 to 4 As shown, an embodiment of the present invention provides a device for detecting the ovality of a bent pipe, including a fixing component 100 and a measuring component 200, wherein the fixing component 100 is suitable for horizontally fixing a bent pipe 600 to be measured; the measuring component 200 includes a base 210, a rotating shaft 220, a rotating rod 230 and a measuring component 240, wherein the base 210 is spaced apart from the fixing component 100 in a vertical direction, and the base 210 is suitable for making position marks at the ends of the inner wall 610 and the outer wall 620 of the bent pipe 600 to be measured; the rotating shaft 220 is rotatably arranged on the base 210 in a vertical direction; the rotating rod 230 is arranged in a horizontal direction, one end of the rotating rod 230 is connected to the rotating shaft 220, and the other end of the rotating rod 230 extends to the position mark; the measuring component 240 is spaced apart from the rotating shaft 220, and the measuring component 240 has a retractable free end, and the free end is connected to the rotating shaft 220.

[0027] The bent pipe ovality detection device of the embodiment of the present invention mainly includes a fixing component 100 and a measuring component 200. The fixing component 100 is used to horizontally fix the bent pipe 600 to be tested to ensure that the position of the bent pipe 600 to be tested is stable during the detection process. The measuring component 200 is mainly composed of a base 210, a rotating shaft 220, a rotating rod 230 and a measuring component 240. The base 210 is arranged below the fixing component 100, that is, the base 210 is located below the bent pipe 600 to be tested, the rotating shaft 220 is vertically installed inside the base 210, the rotating rod 230 is horizontally arranged, and one end is connected to the rotating shaft 220, and the rotating rod 230 extends from the rotating shaft 220 to the upper end surface of the base 210, and the free end of the measuring component 240 is fixed on the rotating shaft 220, and the measuring component 240 is a retractable component that can change in length.

[0028] When measuring the ovality of a bent pipe, first, the bent pipe 600 to be measured is fixed by the fixing assembly 100 to keep it horizontal, and the corresponding positions of the ends of the inner wall 610 and the outer wall 620 of the bent pipe 600 to be measured are marked on the upper end surface of the base 210, and then the rotating shaft 220 is rotated, thereby driving the rotating rod 230 to reach the marks of the inner wall 610 and the outer wall 620 of the bent pipe 600 to be measured on the base 210 respectively. While the rotating rod 230 rotates, the measuring component 240 and the rotating shaft 220 are synchronously extended, and the free end of the measuring component 240 is wrapped around the rotating shaft 220. When the rotating rod 230 reaches the two position marks and stops rotating, the lengths of the measuring component 240 are recorded twice respectively. According to the indications on the measuring component 240, the radians of the inner wall 610 and the outer wall 620 of the bent pipe 600 to be measured are correspondingly obtained, and finally the ovality is calculated based on the radians.

[0029] The present invention measures the bending length of the inner wall 610 of the bend pipe 600 to be measured by the measuring component 240, converts the curvature of the inner wall 610 of the bend pipe 600 to be measured by the bending length of the inner wall 610, repeats the above steps to measure the curvature of the outer wall 620 of the bend pipe 600 to be measured, and then compares the two data of the curvature of the inner wall 610 and the curvature of the outer wall 620 to measure its ellipticity. By recording the end positions of the inner wall 610 and the outer wall 620 of the bend pipe on the base 210, the measuring component 240 is extended under the action of the rotating shaft 220 and the rotating rod 230 to indicate the length change of the inner wall 610 and the outer wall 620 of the bend pipe 600 to be measured, thereby converting the curvature and obtaining the ellipticity. The present invention has a simple structure and is easy to operate. It can accurately measure the diameter change of the curved part on the bend pipe, improve the detection accuracy, and adapt to more types of bend pipes, and has a wide range of applications.

[0030] In this embodiment, the inner wall 610 of the bend pipe 600 to be tested and the outer wall 620 of the bend pipe 600 to be tested are both the outer surfaces of the bend pipe 600 to be tested, the inner wall 610 refers to the outer wall of the inner concave side of the curved portion of the bend pipe, and the outer wall 620 is the outer wall of the outer convex side of the curved portion of the bend pipe. The rotating shaft 220 and the rotating rod 230 are designed as an integrated structure. In other embodiments, the rotating rod 230 and the rotating shaft 220 can also be connected by a key to ensure that the rotating rod 230 and the rotating shaft 220 rotate synchronously.

[0031] According to one embodiment of the present invention, the fixing assembly 100 includes a fixing ring 110 and an adjusting component 120, the fixing ring 110 is a circular ring; the adjusting component 120 is movably connected to the fixing ring 110, and is suitable for fixing the bend pipe 600 to be tested inside the fixing ring 110. In this embodiment, the fixing assembly 100 is mainly composed of the fixing ring 110 and the adjusting component 120, the bend pipe 600 to be tested can pass through the fixing ring 110, and the adjusting component 120 moves on the fixing ring 110, thereby adjusting the distance between the component 120 itself and the bend pipe 600 to be tested in the fixing ring 110, until the bend pipe 600 to be tested is fixed between the adjusting component 120 and the fixing ring 110.

[0032] The shape of the fixing ring 110 is circular, adapted to the circular cross-sectional shape of the bend pipe 600 to be tested, increasing the contact range with the surface of the bend pipe 600 to be tested, improving the stability of the fixation, achieving adaptive fixation of bend pipes of different diameters, improving the versatility and ease of operation of the fixing assembly 100, reducing the frequency of replacing the fixing assembly 100, and improving work efficiency. The fixing ring 110 is usually made of metal material and has a certain strength and rigidity.

[0033] According to an embodiment of the present invention, the adjusting component 120 includes a bolt 121 and a buckle 122. The fixing ring 110 is provided with a threaded hole. The bolt 121 is screwed into the inner side of the fixing ring 110 through the threaded hole. The buckle 122 is arranged on the inner side of the fixing ring 110 and connected with the bolt 121. In this embodiment, the adjusting component 120 is mainly composed of the bolt 121 and the buckle 122. The threaded hole on the fixing ring 110 is arranged along the radial direction of the fixing ring 110. The bolt 121 can be screwed into the inner side of the fixing ring 110 through the threaded hole. The bolt 121 is connected with the buckle 122. By adjusting the length of the bolt 121 screwed into the inner side of the fixing ring 110, the position of the buckle 122 on the inner side of the fixing ring 110 can be adjusted to adapt to elbows of different diameters. The adjusting component 120 has a simple structure, is convenient for quick installation and removal of elbows, and improves work efficiency.

[0034] The buckle 122 is an arc-shaped plate, which is adapted to the circular cross-section of the bent pipe. The buckle 122 cooperates with the fixing ring 110 to clamp and fix the bent pipe 600 to be tested, and the clamping and loosening of the bent pipe 600 to be tested are achieved by rotating the bolt 121. That is, when the bolt 121 is tightened, the buckle 122 presses the bent pipe 600 to be tested; when the bolt 121 is loosened, the buckle 122 loosens the bent pipe 600 to be tested. This adjustment mechanism can quickly fix and release the bent pipe 600 to be tested, facilitates operation, and ensures that the bent pipe 600 to be tested remains stable during the detection process.

[0035] It is understandable that the buckle 122 and the bolt 121 can be fixed together by mechanical connection, such as welding or riveting. The screwing in and out of the bolt 121 can be completed manually or with a tool.

[0036] According to one embodiment of the present invention, the measuring component 200 also includes a main gear 260 and at least one sub-gear 270 . The main gear 260 is coaxially connected to the rotating shaft 220 , and the main gear 260 is arranged on the inner side of the base 210 ; the sub-gear 270 is arranged around the main gear 260 and meshes with the main gear 260 . In this embodiment, the measuring assembly 200 is mainly composed of a base 210, a rotating shaft 220, a rotating rod 230, a measuring component 240, a main gear 260 and at least one sub-gear 270. The main gear 260 and the sub-gear 270 are both installed inside the base 210. The main gear 260 is coaxially connected to the rotating shaft 220. At least one sub-gear 270 is arranged around the main gear 260 and meshes with the main gear 260. The sub-gear 270 is axially parallel to the main gear 260. When the rotating shaft 220 rotates, the main gear 260 can be driven to rotate synchronously, and then the main gear 260 drives the sub-gear 270 to rotate, which can achieve more complex motion conversion, such as deceleration or increase of torque, which helps to improve the accuracy and stability of measurement.

[0037] In this embodiment, there are four sub-gears 270, which are arranged around the main gear 260 and mesh with the main gear 260. The cooperation between the main gear 260 and the sub-gears 270 can prevent the rotating shaft 220 from changing its position easily, and the rotating shaft 220 can only be rotated by turning it with force, thereby avoiding inaccurate test data caused by the rotating shaft 220 rotating too flexibly, thereby improving the accuracy of the measurement data.

[0038] According to one embodiment of the present invention, an indicator block 231 is provided at the end of the rotating rod 230 that contacts the base 210, and the lower surface of the indicator block 231 contacts the upper end surface of the base 210. In this embodiment, one end of the rotating rod 230 is connected to the rotating shaft 220, and the indicator block 231 is provided at the other end, and the lower surface of the indicator block 231 is in sliding contact with the upper end surface of the base 210. When the rotating rod 230 rotates with the rotating shaft 220, the indicator block 231 also slides synchronously along the upper end surface of the base 210. The indicator block 231 can accurately indicate to the operator that the rotating rod 230 has reached the marked position, thereby improving the accuracy of the measurement data and facilitating the operator to read the data of the measuring component 240.

[0039] It is understandable that the indicator block 231 is fixed to the end of the rotating rod 230 by screws or welding. The lower surface of the indicator block 231 is in close contact with the upper end surface of the base 210 to ensure that the indicator block 231 can slide smoothly during the rotation process.

[0040] According to one embodiment of the present invention, the measuring assembly 200 further includes a reference ruler 280, on which a reference ruler 280 is provided with a reference relationship between the length value of the measuring component 240 and the curvature value of the curved pipe 600 to be measured. In this embodiment, the reference ruler 280 is marked with a reference relationship between the length value of the measuring component 240 and the curvature value of the curved pipe 600 to be measured. After the operator reads the data from the measuring component 240, the operator can directly read the curvature of the curved pipe from the reference ruler 280, which simplifies the calculation process, improves the detection efficiency, and reduces human errors.

[0041] The reference ruler 280 is mainly composed of radians and length units. Different lengths correspond to different radians, which makes it easy for the user to directly measure the size of the bending radian. According to the indication on the measuring component 240, the corresponding radian α is found on the reference ruler 280, and then the obtained radian α is used to calculate its ellipticity through (90-α) / 90×100%.

[0042] According to one embodiment of the present invention, the fixing assembly 100 further includes a placing tray 130, the placing tray 130 is arranged at the upper end of the base 210, the measuring component 240 is arranged on the placing tray 130, and the rotating shaft 220 is passed through the placing tray 130. In this embodiment, the placing tray 130 is installed at the upper end of the base 210, the measuring component 240 is fixed on the placing tray 130, the rotating shaft 220 can rotatably pass through the placing tray 130, and the fixing assembly 100 is arranged above the placing tray 130. The design of the placing tray 130 provides a working platform for the rotating shaft 220 and the measuring component 240, which is convenient for placing tools or other auxiliary equipment, and also provides a stable support point for the measuring component 240 and the rotating shaft 220.

[0043] In this embodiment, the base 210 is cylindrical, so the placement plate 130 is circular and serves as the upper end seal of the base 210. The space enclosed by the placement plate 130 and the base 210 can be used to place the main gear 260 and the sub-gear 270. The placement plate 130 is detachably fixed to the upper end of the base 210. The measuring component 240 is fixed to the placement plate 130 by threaded connection or welding. The rotating shaft 220 is passed through the placement plate 130 through a bearing to ensure that the rotating shaft 220 can rotate freely.

[0044] According to an embodiment of the present invention, the measuring component 240 includes a measuring tape 241 and a fixing rod 242, wherein the free end of the measuring tape 241 is connected to the rotating shaft 220; the fixing rod 242 is spaced apart from the rotating shaft 220, and the measuring tape 241 is retractably connected to the fixing rod 242. In this embodiment, the measuring component is mainly composed of the measuring tape 241 and the fixing rod 242, wherein the measuring tape 241 is a flexible tape, wherein one end of the measuring tape 241 is a free end connected to the surface of the rotating shaft 220, and the other end is fixed to the fixing rod 242, and when the rotating rod 230 is in the initial position, the measuring tape 241 as a whole can be rolled up and wound around the fixing rod 242, and during the ovality detection process, as the rotating shaft 220 rotates, the measuring tape 241 is pulled out from the fixing rod 242, and the free end is wound around the surface of the rotating shaft 220.

[0045] In this embodiment, the connection between the fixed rod 242 and the measuring tape 241 can also be designed to be automatically recovered, that is, after the rotating rod 230 returns to its initial position, the measuring tape 241 can be automatically rolled back to the fixed rod 242. The fixing of the measuring tape 241 on the fixed rod 242 ensures that the measuring tape 241 maintains tension during the pulling out and retracting process.

[0046] According to one embodiment of the present invention, a winding rod 221 is provided at the upper end of the rotating shaft 220, the winding rod 221 is connected to the fixing ring 110, and the free end of the measuring tape 241 is connected to the winding rod 221. In this embodiment, the rotating shaft 220 is connected to the fixing ring 110 through the winding rod 221, the measuring component 240 is connected to the winding rod 221, and the rotating shaft 220 and the winding rod 221 are coaxially arranged, so the rotating shaft 220 and the winding rod 221 rotate synchronously, driving the measuring component 240 to be pulled out or retracted, which can ensure that the measuring component 240 maintains good tension during use, avoids measurement errors caused by the relaxation of the measuring component 240, affects the measurement results, and improves the accuracy and reliability of the measurement.

[0047] The relationship between the rotating shaft 220, the winding rod 221 and the fixing ring 110 enables the fixing component 100 and the measuring component 200 to be integrated into one body. The rotating shaft 220 and the winding rod 221 can be used as support and positioning for the fixing component 100 on the storage table.

[0048] According to one embodiment of the present invention, the device for detecting the ovality of a bent pipe further includes an operating table 300 and a tripod 400. The reference ruler 280 and the measuring component 200 are both arranged on the operating table 300. The tripod 400 supports the operating table 300 and is suitable for adjusting the level of the operating table 300. In this embodiment, the device for detecting the ovality of a bent pipe mainly consists of a fixing component 100, a measuring component 200, an operating table 300 and a tripod 400. The reference ruler 280 and the measuring component 200 are installed on the operating table 300, so as to improve the integration of the device and reduce the space occupied. The tripod 400 supports the operating table 300 and can adjust the level of the operating table 300, so as to keep the measuring component 200 and the fixing component 100 away from the ground, avoid inaccurate test data caused by uneven ground, ensure that the entire device is in the best working state, and is conducive to improving the accuracy of measurement, while facilitating user operation.

[0049] In this embodiment, the tripods 400 include four in total. The operating table 300 is rectangular. The four tripods 400 are respectively supported at the four corners of the operating table 300. The height position of the operating table 300 on the tripods 400 is adjustable, thereby adjusting the horizontality of the operating table 300. The adjustable tripods 400 can adapt to different working environments, thereby improving the applicability of the equipment.

[0050] According to one embodiment of the present invention, the device for detecting the ovality of a bent pipe further comprises a chassis 500, which is arranged on the operating table 300, and the lower end surface of the base 210 is connected to the chassis 500. In this embodiment, the chassis 500 is arranged on the operating table 300, and as the bottom support of the base 210, the chassis 500 is installed at the lower end of the base 210, supporting the overall structure of the base 210, which not only increases the stability of the entire device, but also provides a flat foundation, which helps to ensure the correct alignment and operation of all components, increases the rigidity of the base 210, and reduces vibration and shaking.

[0051] It is understandable that the chassis 500 is fixed below the operating table 300 by screws or welding. The lower end surface of the base 210 is connected to the chassis 500 by screws or welding to ensure the stability of the base 210.

[0052] Finally, 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting the ovality of a bent pipe, characterized in that: include: A fixing assembly (100), wherein the fixing assembly (100) is suitable for horizontally fixing the bent pipe (600) to be tested; A measuring assembly (200), the measuring assembly (200) comprising a base (210), a rotating shaft (220), a rotating rod (230), and a measuring component (240); The base (210) is spaced apart from the fixing assembly (100) in a vertical direction, and the base (210) is suitable for marking positions at the ends of the inner wall (610) and the outer wall (620) of the curved pipe (600) to be tested; The rotating shaft (220) is rotatably disposed on the base (210) along a vertical direction; The rotating rod (230) is arranged in the horizontal direction, one end of the rotating rod (230) is connected to the rotating shaft (220), and the other end of the rotating rod (230) extends to the position mark; The measuring component (240) is spaced apart from the rotating shaft (220), and the measuring component (240) has a retractable free end, wherein the free end is connected to the rotating shaft (220).

2. The device for detecting the ovality of a bent pipe according to claim 1, characterized in that: The fixing assembly (100) comprises: A fixing ring (110), wherein the fixing ring (110) is a circular ring; An adjusting component (120), the adjusting component (120) being movably connected to the fixing ring (110) and suitable for fixing the bent pipe (600) to be tested inside the fixing ring (110).

3. The device for detecting the ovality of a bent pipe according to claim 2, characterized in that: The adjusting component (120) comprises: A bolt (121), the fixing ring (110) being provided with a threaded hole, the bolt (121) being screwed into the inner side of the fixing ring (110) through the threaded hole; A buckle (122), the buckle (122) is arranged on the inner side of the fixing ring (110) and is connected to the bolt (121).

4. The device for detecting the ovality of a bent pipe according to claim 1, characterized in that: The measuring component (200) further comprises: A main gear (260), the main gear (260) being coaxially connected to the rotating shaft (220), and the main gear (260) being arranged inside the base (210); At least one secondary gear (270), the secondary gear (270) being arranged around the primary gear (260) and meshing with the primary gear (260).

5. The device for detecting the ovality of a bent pipe according to claim 1, characterized in that: An indicator block (231) is provided at the end of the rotating rod (230) that contacts the base (210), and the lower surface of the indicator block (231) contacts the upper end surface of the base (210).

6. The device for detecting the ovality of a bent pipe according to any one of claims 1 to 5, characterized in that: The measuring assembly (200) further comprises a comparison ruler (280), on which a comparison relationship between the length value of the measuring component (240) and the curvature value of the curved pipe (600) to be measured is provided.

7. The device for detecting the ovality of a bent pipe according to any one of claims 1 to 5, characterized in that: The fixing assembly (100) further comprises a storage tray (130), wherein the storage tray (130) is arranged at the upper end of the base (210), the measuring component (240) is arranged on the storage tray (130), and the rotating shaft (220) passes through the storage tray (130).

8. The device for detecting the ovality of a bent pipe according to claim 2 or 3, characterized in that: The measuring component (240) comprises: A measuring tape (241), wherein a free end of the measuring tape (241) is connected to the rotating shaft (220); A fixing rod (242), the fixing rod (242) and the rotating shaft (220) are arranged at a distance, and the measuring tape (241) is telescopically connected to the fixing rod (242).

9. The device for detecting the ovality of a bent pipe according to claim 8, characterized in that: A winding rod (221) is provided at the upper end of the rotating shaft (220); the winding rod (221) is connected to the fixing ring (110); and the free end of the measuring tape (241) is connected to the winding rod (221).

10. The device for detecting the ovality of a bent pipe according to claim 6, characterized in that: Also includes: An operating table (300), wherein the reference ruler (280) and the measuring component (200) are both arranged on the operating table (300); A tripod (400), the tripod (400) supporting the operating table (300) and being suitable for adjusting the horizontality of the operating table (300).

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