Bent pipe ovality detection device

Abstract

This invention relates to the field of pipe fitting inspection, and provides a device for detecting the ellipticity of bent pipes. The device includes a fixing component and a measuring component. The fixing component is adapted to horizontally fix the bent pipe to be tested. The measuring component includes a base, a rotating shaft, a rotating rod, and a measuring element. The base is vertically spaced from the fixing component and is adapted to mark positions at the ends of the inner and outer sidewalls of the bent pipe. The rotating shaft is rotatably mounted on the base in a vertical direction. The rotating rod is horizontally positioned, with one end connected to the rotating shaft and the other end extending to the position mark. The measuring element is spaced from the rotating shaft and has a retractable free end connected to the rotating shaft. This invention has a simple structure and is easy to operate. It can accurately measure the diameter change at the bending position of a bent pipe, improving detection accuracy, and is adaptable to a wider range of bent pipe types, thus having a broad application range.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting inspection, and provides a device for detecting the ellipticity of bent pipes. Background Technology

[0002] Currently, the devices for detecting the ellipticity of steel pipes are usually designed for straight pipes. However, their application is extremely limited. After all, it is impossible to make a steel pipe perfectly straight; it can only be achieved under relatively ideal conditions. In actual measurements, there will be some degree of error. Moreover, the devices for detecting the ellipticity of bent pipes are relatively complex in structure, and the test results are not accurate enough, with a relatively small range of applications. Summary of the Invention

[0003] This invention provides a device for detecting the ellipticity of a bent pipe, which addresses one of the shortcomings of related technologies. It achieves a simple structure, convenient operation, and the ability to accurately measure the diameter change at the bending position of the bent pipe, thereby improving detection accuracy. It is also adaptable to a wider range of bent pipe types and has a broad application range.

[0004] This invention provides a device for detecting the ellipticity of a bent pipe, comprising:

[0005] Fixing component, the fixing component being adapted to horizontally fix the bend to be tested;

[0006] A measuring assembly, comprising a base, a rotating shaft, a rotating rod, and measuring components;

[0007] The base is arranged vertically at intervals from the fixing component, and the base is adapted to mark the position at the ends corresponding to the inner and outer side walls of the bend to be tested.

[0008] The rotating shaft is rotatably mounted on the base in the vertical direction;

[0009] The rotating rod is arranged horizontally, 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;

[0010] The measuring component is spaced apart from the rotating shaft, and the measuring component has a free end that can extend and retract, which is connected to the rotating shaft.

[0011] According to one embodiment of the present invention, the fixing component includes:

[0012] The fixing ring is a circular ring;

[0013] An adjusting component is movably connected to the fixing ring and is adapted to fix the bent pipe to be tested inside the fixing ring.

[0014] According to one embodiment of the present invention, the adjusting component includes:

[0015] A bolt is provided, and the retaining ring has a threaded hole, through which the bolt is screwed into the inner side of the retaining ring;

[0016] A buckle is provided on the inner side of the fixing ring and is connected to the bolt.

[0017] According to one embodiment of the present invention, the measuring component further includes:

[0018] The main gear is coaxially connected to the rotating shaft and is disposed inside the base;

[0019] At least one secondary gear surrounds the primary gear and meshes with the primary gear.

[0020] According to one embodiment of the present invention, the end of the rotating rod that contacts the base is provided with an indicator block, and the lower surface of the indicator block contacts the upper end surface of the base.

[0021] According to one embodiment of the present invention, the measuring component further includes a reference ruler, which is provided with a comparison relationship between the length value of the measuring component and the curvature value of the bend to be measured.

[0022] According to one embodiment of the present invention, the fixing component further includes a storage tray disposed at the upper end of the base, the measuring component disposed on the storage tray, and the rotating shaft passing through the storage tray.

[0023] According to one embodiment of the present invention, the measuring component includes:

[0024] A measuring tape, the free end of which is connected to the pivot.

[0025] A fixed rod is provided, which is spaced apart from the rotating shaft, and the measuring tape is telescopically connected to the fixed rod.

[0026] According to one embodiment of the present invention, the upper end of the rotating shaft is provided with a winding rod, the winding rod is connected to the fixing ring, and the free end of the measuring tape is connected to the winding rod.

[0027] According to one embodiment of the present invention, it further includes:

[0028] The control panel, the reference ruler, and the measuring components are all mounted on the control panel;

[0029] A tripod that supports the control panel and is adapted to adjust the levelness of the control panel.

[0030] The ellipticity detection device for bent pipes provided by this invention mainly includes a fixing component and a measuring component. The fixing component is used to horizontally fix the bent pipe to be tested, ensuring that the position of the bent pipe to be tested is stable during the testing process. The measuring component mainly consists of a base, a rotating shaft, a rotating rod, and a measuring component. The base is located below the fixing component, 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 set, and one end is connected to the rotating shaft. The rotating rod extends from the rotating shaft to the upper end face of the base. The free end of the measuring component is fixed on the rotating shaft. The measuring component is a retractable component that can change length.

[0031] When measuring the ellipticity of a bent pipe, the pipe to be tested is first fixed horizontally using a fixing assembly. The positions corresponding to the ends of the inner and outer walls of the pipe are marked on the upper surface of the base. Then, the rotating shaft is rotated, causing the rotating rod to reach the marked positions on the inner and outer walls of the pipe. Simultaneously, the measuring component extends synchronously with the rotating shaft, with the free end of the measuring component wrapped around the shaft. Once the rotating rod reaches the two marked positions and stops rotating, the length of the measuring component is recorded twice. Based on the readings on the measuring component, the curvature of the inner and outer walls of the bent pipe is determined. Finally, the ellipticity is calculated based on the curvature.

[0032] This invention measures the bending length of the inner wall of the bend under test using a measuring component. The curvature of the inner wall is then calculated from this bending length. The same steps are repeated to measure the curvature of the outer wall. By comparing the two curvature values, the ellipticity can be determined. The end positions of the inner and outer walls of the bend are recorded on a base. The measuring component extends under the action of a rotating shaft and rod to indicate the length changes of the inner and outer walls of the bend under test, thereby calculating the curvature and obtaining the ellipticity. This invention has a simple structure, is easy to operate, and can accurately measure the diameter change of the bent portion of a bend, improving detection accuracy. It is also adaptable to a wider variety of bend types, making it widely applicable. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this invention 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 described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is one of the structural schematics of the pipe ellipticity detection device provided in the embodiments of the present invention;

[0035] Figure 2This is the second schematic diagram of the structure of the pipe ellipticity detection device provided in the embodiments of the present invention;

[0036] Figure 3 This is a schematic diagram of the main gear and auxiliary gear of the pipe ellipticity detection device provided in an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the base of the pipe ellipticity detection device provided in an embodiment of the present invention.

[0038] Figure label:

[0039] 100. Fixing component; 110. Fixing ring; 120. Adjusting part; 121. Bolt; 122. Clip; 130. Storage tray;

[0040] 200. Measuring component; 210. Base; 220. Rotating shaft; 221. Winding rod; 230. Rotating rod; 231. Indicator block; 240. Measuring part; 241. Measuring tape; 242. Fixing rod; 260. Main gear; 270. Secondary gear; 280. Reference scale;

[0041] 300. Control panel; 400. Frame; 500. Chassis;

[0042] 600, the bend to be tested; 610, the inner wall; 620, the outer wall. Detailed Implementation

[0043] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0044] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0046] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] Furthermore, in the description of the embodiments of the present invention, unless otherwise stated, the terms "multiple", "multiple roots", and "multiple groups" mean two or more, and "several", "several roots", and "several groups" mean one or more.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] like Figures 1 to 4As shown, this embodiment of the invention provides a device for detecting the ellipticity of a bent pipe, including a fixing component 100 and a measuring component 200. The fixing component 100 is adapted to horizontally fix the bent pipe 600 to be tested. The measuring component 200 includes a base 210, a rotating shaft 220, a rotating rod 230, and a measuring component 240. The base 210 is arranged vertically and spaced apart from the fixing component 100. The base 210 is adapted to mark the positions at the ends of the inner sidewall 610 and the outer sidewall 620 of the bent pipe 600 to be tested. The rotating shaft 220 is rotatably mounted on the base 210 in the vertical direction. The rotating rod 230 is arranged horizontally, with one end connected to the rotating shaft 220 and the other end extending to the position mark. The measuring component 240 is arranged spaced apart from the rotating shaft 220 and has a retractable free end connected to the rotating shaft 220.

[0050] The pipe ellipticity detection device of this invention mainly includes a fixing component 100 and a measuring component 200. The fixing component 100 is used to horizontally fix the pipe 600 to be tested, ensuring that the position of the pipe 600 to be tested is stable during the testing process. The measuring component 200 mainly consists of a base 210, a rotating shaft 220, a rotating rod 230 and a measuring component 240. The base 210 is located below the fixing component 100, that is, the base 210 is located below the 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. The rotating rod 230 extends from the rotating shaft 220 to the upper end face of the base 210. The free end of the measuring component 240 is fixed on the rotating shaft 220. The measuring component 240 is a retractable component that can change length.

[0051] When measuring the ellipticity of a bent pipe, the bent pipe 600 to be tested is first fixed horizontally by the fixing component 100. The positions corresponding to the ends of the inner wall 610 and the outer wall 620 of the bent pipe 600 to be tested are marked on the upper surface of the base 210. Then, the rotating shaft 220 is rotated, thereby driving the rotating rod 230 to reach the marks on the inner wall 610 and the outer wall 620 of the bent pipe 600 to be tested on the base 210 respectively. While the rotating rod 230 is rotating, the measuring component 240 and the rotating shaft 220 extend synchronously. The free end of the measuring component 240 is wrapped around the rotating shaft 220. When the rotating rod 230 stops rotating after reaching the two position marks respectively, the length of the measuring component 240 is recorded twice. According to the reading on the measuring component 240, the arc of the inner wall 610 and the arc of the outer wall 620 of the bent pipe 600 to be tested are obtained. Finally, the ellipticity can be calculated based on the arc.

[0052] This invention measures the bending length of the inner wall 610 of the bend 600 under test using the measuring component 240. The curvature of the inner wall 610 is then calculated from this bending length. The same steps are repeated to measure the curvature of the outer wall 620 of the bend 600. Comparing these two measurements yields the ellipticity. Alternatively, the end positions of the inner wall 610 and outer wall 620 are recorded on the base 210. The measuring component 240 is extended under the action of the rotating shaft 220 and rotating rod 230 to indicate the length changes of the inner wall 610 and outer wall 620 of the bend 600, thereby calculating the curvature and obtaining the ellipticity. This invention has a simple structure, is easy to operate, and can accurately measure the diameter change of the bent portion of a bend, improving detection accuracy. It is also adaptable to a wider range of bend types and has a broad application scope.

[0053] In this embodiment, the inner wall 610 and the outer wall 620 of the bend 600 under test are both outer surfaces of the bend 600. The inner wall 610 refers to the outer wall of the concave side of the bent portion of the bend, and the outer wall 620 refers to the outer wall of the convex side of the bent portion of the bend. The rotating shaft 220 and the rotating rod 230 are designed as an integral 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.

[0054] 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 adapted to fix the bent tube 600 to be tested inside the fixing ring 110. In this embodiment, the fixing assembly 100 mainly consists of the fixing ring 110 and the adjusting component 120. The bent tube 600 to be tested can pass through the fixing ring 110. The adjusting component 120 moves on the fixing ring 110, thereby adjusting the distance between the adjusting component 120 itself and the bent tube 600 to be tested inside the fixing ring 110, until the bent tube 600 to be tested is fixed between the adjusting component 120 and the fixing ring 110.

[0055] The retaining ring 110 is circular in shape, adapting to the circular cross-sectional shape of the bend 600 under test. This increases the contact area with the surface of the bend 600, improves the stability of the fixation, and enables adaptable fixation for bends of different diameters. This enhances the versatility and ease of operation of the fixing assembly 100, reduces the frequency of replacing the fixing assembly 100, and improves work efficiency. The retaining ring 110 is typically made of metal and possesses a certain degree of strength and rigidity.

[0056] According to one embodiment of the present invention, the adjusting component 120 includes a bolt 121 and a snap fastener 122. A fixed ring 110 has a threaded hole, through which the bolt 121 is screwed into the inner side of the fixed ring 110. The snap fastener 122 is disposed inside the fixed ring 110 and connected to the bolt 121. In this embodiment, the adjusting component 120 mainly consists of the bolt 121 and the snap fastener 122. The threaded hole on the fixed ring 110 is arranged radially along the fixed ring 110. The bolt 121 can be screwed into the inner side of the fixed ring 110 through the threaded hole. The bolt 121 is connected to the snap fastener 122. By adjusting the length of the bolt 121 screwed into the inner side of the fixed ring 110, the position of the snap fastener 122 inside the fixed ring 110 can be adjusted to accommodate bends of different diameters. The adjusting component 120 has a simple structure, facilitates quick installation and disassembly of bends, and improves work efficiency.

[0057] The clip 122 is an arc-shaped plate adapted to the circular cross-section of the bent pipe. The clip 122 cooperates with the fixing ring 110 to clamp and fix the bent pipe 600 under test. The clamping and loosening of the bent pipe 600 under test is achieved by rotating the bolt 121. That is, when the bolt 121 is tightened, the clip 122 presses against the bent pipe 600 under test; when the bolt 121 is loosened, the clip 122 releases the bent pipe 600 under test. This adjustment mechanism allows for quick fixing and releasing of the bent pipe 600 under test, facilitating operation and ensuring the stability of the bent pipe 600 during testing.

[0058] Understandably, the clip 122 and the bolt 121 can be mechanically connected, such as by welding or riveting, to be fixed together. The screwing in and out of the bolt 121 can be done manually or with tools.

[0059] According to one embodiment of the present invention, the measuring component 200 further includes a main gear 260 and at least one secondary gear 270. The main gear 260 is coaxially connected to the rotating shaft 220 and is disposed inside the base 210. The secondary gear 270 surrounds the main gear 260 and meshes with the main gear 260. In this embodiment, the measuring component 200 mainly consists of a base 210, a rotating shaft 220, a rotating rod 230, a measuring component 240, a main gear 260, and at least one auxiliary gear 270. Both the main gear 260 and the auxiliary gear 270 are installed inside the base 210. The main gear 260 is coaxially connected to the rotating shaft 220. At least one auxiliary gear 270 is arranged around the main gear 260 and meshes with it. The auxiliary gear 270 is axially parallel to the main gear 260. When the rotating shaft 220 rotates, it can synchronously drive the main gear 260 to rotate, thereby causing the main gear 260 to drive the auxiliary gear 270 to rotate. This allows for more complex motion conversions, such as deceleration or torque increase, which helps to improve the accuracy and stability of the measurement.

[0060] In this embodiment, there are four auxiliary gears 270, which surround the main gear 260 and mesh with it. The engagement of the main gear 260 and the auxiliary gears 270 ensures that the rotating shaft 220 does not easily change its position; force must be applied to rotate the shaft 220 to make it rotate. This avoids inaccurate test data caused by the shaft 220 rotating too freely, thereby improving the accuracy of the measurement data.

[0061] 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 other end is provided with the indicator block 231, and the lower surface of the indicator block 231 slides in 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, improving the accuracy of the measurement data and facilitating the operator to read the data of the measuring component 240.

[0062] Understandably, 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 rotation.

[0063] According to one embodiment of the present invention, the measuring component 200 further includes a reference ruler 280, which is provided with a correspondence between the length value of the measuring component 240 and the curvature value of the bend 600 to be measured. In this embodiment, the reference ruler 280 is marked with the correspondence between the length value of the measuring component 240 and the curvature value of the bend 600 to be measured. After the operator reads the data from the measuring component 240, they can directly read the curvature of the bend from the corresponding value on the reference ruler 280, which simplifies the calculation process, improves the detection efficiency, and reduces human error.

[0064] The reference ruler 280 is mainly composed of units of radians and lengths. Different lengths correspond to different radians, making it easy for users to directly measure the size of the curvature. Based on the reading on the measuring component 240, the corresponding radian α is found on the reference ruler 280. Then, the ellipticity can be calculated by using the obtained radian α through (90-α) / 90×100%.

[0065] According to one embodiment of the present invention, the fixing assembly 100 further includes a storage tray 130, which is disposed on the upper end of the base 210. The measuring component 240 is disposed on the storage tray 130, and the rotating shaft 220 passes through the storage tray 130. In this embodiment, the storage tray 130 is mounted on the upper end of the base 210, the measuring component 240 is fixed on the storage tray 130, the rotating shaft 220 rotatably passes through the storage tray 130, and the fixing assembly 100 is disposed above the storage tray 130. The design of the storage tray 130 provides a working platform for the rotating shaft 220 and the measuring component 240, facilitating the placement of tools or other auxiliary equipment, and also providing a stable support point for the measuring component 240 and the rotating shaft 220.

[0066] In this embodiment, the base 210 is cylindrical, so the storage tray 130 is circular and serves as the upper end seal of the base 210. The space enclosed by the storage tray 130 and the base 210 can be used to place the main gear 260 and the secondary gear 270. The storage tray 130 is detachably fixed to the upper end of the base 210. The measuring component 240 is fixed to the storage tray 130 by threaded connection or welding. The rotating shaft 220 passes through the storage tray 130 via bearings, ensuring that the rotating shaft 220 can rotate freely.

[0067] According to one embodiment of the present invention, the measuring component 240 includes a measuring tape 241 and a fixed rod 242. The free end of the measuring tape 241 is connected to a rotating shaft 220. The fixed rod 242 is spaced apart from the rotating shaft 220, and the measuring tape 241 is telescopically connected to the fixed rod 242. In this embodiment, the measuring component mainly consists of a measuring tape 241 and a fixed rod 242. The measuring tape 241 is a flexible ruler. 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 fixed rod 242. When the rotating rod 230 is in the initial position, the measuring tape 241 can be rolled up and wrapped around the fixed rod 242. During the ellipticity detection process, as the rotating shaft 220 rotates, the measuring tape 241 is pulled out from the fixed rod 242, and the free end is wrapped around the surface of the rotating shaft 220.

[0068] In this embodiment, the connection between the fixed rod 242 and the measuring tape 241 can also be designed to be automatically retracted. That is, after the rotating rod 230 returns to its initial position, the measuring tape 241 can automatically retract 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 retraction process.

[0069] According to one embodiment of the present invention, the upper end of the rotating shaft 220 is provided with a winding rod 221, which is connected to the fixing ring 110. 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, and the measuring component 240 is connected to the winding rod 221. 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. This ensures that the measuring component 240 maintains good tension during use, avoids measurement errors caused by the loosening of the measuring component 240, and improves the accuracy and reliability of the measurement.

[0070] 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 form an integral unit. The rotating shaft 220 and the winding rod 221 can serve as support and positioning for the fixing component 100 on the table.

[0071] According to one embodiment of the present invention, the pipe ellipticity testing device further includes an operating table 300 and a stand 400. A reference ruler 280 and a measuring component 200 are both mounted on the operating table 300. The stand 400 supports the operating table 300 and is suitable for adjusting the level of the operating table 300. In this embodiment, the pipe ellipticity testing device mainly consists of a fixing component 100, a measuring component 200, an operating table 300, and a stand 400. The operating table 300 is equipped with a reference ruler 280 and a measuring component 200, improving the integration of the device and reducing space occupation. The stand 400 supports the operating table 300 and can adjust the level of the operating table 300, keeping the measuring component 200 and the fixing component 100 away from the ground, avoiding inaccurate test data caused by uneven ground, ensuring the entire device is in optimal working condition, improving measurement accuracy, and facilitating user operation.

[0072] In this embodiment, there are four legs 400. The operating table 300 is rectangular. The four legs 400 are respectively supported at the four corners of the operating table 300. The height of the operating table 300 on the legs 400 is adjustable, thereby adjusting the level of the operating table 300. The adjustable legs 400 can adapt to different working environments and improve the applicability of the equipment.

[0073] According to one embodiment of the present invention, the pipe bending ellipticity detection device further includes a chassis 500, which is disposed on the operating table 300, and the lower end face of the base 210 is connected to the chassis 500. In this embodiment, the chassis 500 is disposed on the operating table 300 as a base support for the base 210. The chassis 500 is installed at the lower end of the base 210, supporting the overall structure of the base 210. This 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.

[0074] Understandably, the chassis 500 is fixed to the operating table 300 by screws or welding. The lower end face of the base 210 is connected to the chassis 500 by screws or welding to ensure the stability of the base 210.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing 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 the present invention.

Claims

1. A device for detecting the ellipticity of a bent pipe, characterized in that, include: Fixing component (100), the fixing component (100) is adapted to horizontally fix the bend (600) to be tested; The measuring assembly (200) includes a base (210), a rotating shaft (220), a rotating rod (230), and a measuring component (240). The base (210) is arranged vertically at intervals from the fixing component (100), and the base (210) is adapted to mark the position at the ends of the inner wall (610) and outer wall (620) corresponding to the bend (600) to be tested; The rotating shaft (220) is rotatably mounted on the base (210) in the 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 free end that can extend and retract, and the free end is connected to the rotating shaft (220); The measuring component (240) includes: Measuring tape (241), the free end of which is connected to the pivot (220). A fixed rod (242) is provided at a distance from the rotating shaft (220), and the measuring tape (241) is telescopically connected to the fixed rod (242). 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 fixed rod (242). When the rotating rod (230) is in the initial position, the measuring tape (241) can be rolled up and wrapped around the fixed rod (242). During the ellipticity detection process, as the rotating shaft (220) rotates, the measuring tape (241) is pulled out from the fixed rod (242), and the free end is wrapped around the surface of the rotating shaft (220). By recording the end positions of the inner and outer walls of the bent pipe under test on the base (210), the measuring tape (241) is extended under the action of the rotating shaft (220) and the rotating rod (230) to indicate the length changes of the inner and outer walls of the bent pipe under test.

2. The pipe ellipticity detection device according to claim 1, characterized in that, The fixing component (100) includes: A fixing ring (110), wherein the fixing ring (110) is a circular ring; An adjusting component (120) is movably connected to the fixing ring (110) and is adapted to fix the bent pipe (600) to be tested inside the fixing ring (110).

3. The pipe ellipticity detection device according to claim 2, characterized in that, The adjusting component (120) includes: Bolt (121), the fixing ring (110) is provided with a threaded hole, the bolt (121) is screwed into the inside of the fixing ring (110) through the threaded hole; A buckle (122) is provided inside the fixing ring (110) and connected to the bolt (121).

4. The pipe ellipticity detection device according to claim 1, characterized in that, The measurement component (200) also includes: The main gear (260) is coaxially connected to the rotating shaft (220) and is disposed inside the base (210); At least one secondary gear (270) surrounds the primary gear (260) and meshes with the primary gear (260).

5. The pipe ellipticity detection device according to claim 1, characterized in that, The end of the rotating rod (230) that contacts the base (210) is provided with an indicator block (231), and the lower surface of the indicator block (231) contacts the upper surface of the base (210).

6. The pipe ellipticity detection device according to any one of claims 1 to 5, characterized in that, The measuring component (200) also includes a reference ruler (280), which has a reference relationship between the length value of the measuring component (240) and the curvature value of the bend (600) to be measured.

7. The pipe ellipticity detection device according to any one of claims 1 to 5, characterized in that, The fixing component (100) also includes a storage tray (130), which is disposed at the upper end of the base (210), the measuring component (240) is disposed on the storage tray (130), and the rotating shaft (220) passes through the storage tray (130).

8. The pipe ellipticity detection device according to claim 2 or 3, characterized in that, The upper end of the rotating shaft (220) is provided with a winding rod (221), 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).

9. The pipe ellipticity detection device according to claim 6, characterized in that, Also includes: The control panel (300) is provided with the reference ruler (280) and the measuring component (200). A stand (400) supports the operating table (300) and is adapted to adjust the level of the operating table (300).

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