Iron pipe casting defect detection device

Abstract

The invention relates to the technical field of iron pipe production and detection, and discloses an iron pipe casting defect detection device which comprises a base, a detection assembly, a first driving assembly and two second driving assemblies. The detection assembly comprises a mounting frame and a power assembly, the mounting frame comprises an annular seat and a moving frame connected with the annular seat, a cavity of an annular structure communicated with the inner circumferential wall of the annular seat is formed in the annular seat, a through hole communicated with the cavity is formed in the outer wall of the annular seat, a gear ring is rotationally connected into the cavity, and a sealing piece of an arc-shaped structure is connected to the inner wall of the gear ring; the power assembly is arranged on the moving frame to drive the gear ring to rotate; the first driving assembly is used for driving the moving frame to move in the axial direction of the iron pipe. The two second driving assemblies are used for driving the corresponding water pressure pressurizing machines to move so as to selectively fill water into the iron pipe from the two ends of the iron pipe. According to the invention, the range of the place with a gap or a hole on the iron pipe can be limited, so that the place with the gap or the hole can be conveniently detected and repaired by a worker.

Description

Technical Field

[0001] The present invention relates to the technical field of iron pipe production and detection, and more specifically, it relates to a detection device for iron pipe casting defects. Background Art

[0002] As an important industrial material, iron pipes are widely used in fields such as petroleum, natural gas, chemical industry, and construction. The quality of iron pipes directly affects the safety and reliability of projects. Therefore, it is crucial to conduct strict quality inspections on iron pipes. During the casting process of iron pipes, gases in the molten metal may not escape completely, resulting in the formation of holes inside or on the surface of the iron pipes. In addition, during the cooling and solidification process of the metal, shrinkage cavities and porosity are likely to occur in the iron pipes. These situations will reduce the mechanical properties of the iron pipes and their airtightness.

[0003] In related technologies, when conducting a hydrostatic test on an iron pipe, usually a hydrostatic pressure press is used to slowly inject water into the iron pipe to expel the air inside the pipe and ensure that the iron pipe is completely filled with water. Then, the water pressure is gradually increased until the test pressure is reached (usually 1.5 times the working pressure or determined according to relevant standards). The pressure is maintained for a period of time, and it is observed whether the pressure gauge is stable. If the pressure gauge continues to drop, it indicates that there are cracks or holes in the iron pipe. Currently, the main method for staff to detect the location of cracks or holes is to visually inspect the wet positions on the iron pipe. However, since the pressure holding time is usually 15 - 30 minutes, the water seeping out from the places with larger holes may flow along the surface of the iron pipe to other positions of the iron pipe, making it difficult to determine the specific location of the holes. Moreover, it requires the staff to gradually conduct inspections all around the iron pipe, which is time-consuming and prone to missed inspections during long-term work. Summary of the Invention

[0004] The present invention provides a detection device for iron pipe casting defects, which solves the technical problems in related technologies that the water seeping out from the places with larger holes may flow along the surface of the iron pipe to other positions of the iron pipe, making it difficult to determine the specific location of the holes, and it is time-consuming and prone to missed inspections.

[0005] The present invention provides an iron pipe casting defect detection device, comprising: an iron pipe and two hydraulic pressure presses. The iron pipe casting defect detection device further includes: a base; a detection component, which includes: a mounting frame and a power component. The mounting frame includes: an annular seat and a moving frame connected to the annular seat. An annular cavity communicating with its inner peripheral wall is formed inside the annular seat. Through holes communicating with the cavity are formed on the outer wall of the annular seat. A gear ring is rotatably connected inside the cavity. A sealing member with an arc-shaped structure is connected to the inner wall of the gear ring. The sealing member rotates with the gear ring to selectively seal a part of the surface of the iron pipe. The power component is arranged on the moving frame and cooperates with the gear ring through the through hole to drive the gear ring to rotate; a first driving component, which is arranged on the base and cooperates with the moving frame to drive the moving frame to move along the axial direction of the iron pipe; two second driving components, which are arranged on the base and respectively cooperate with the two hydraulic pressure presses to drive the corresponding hydraulic pressure presses to move, for selectively filling water into the iron pipe from both ends of the iron pipe.

[0006] As a further improvement of the present invention, the base includes: a top plate, a bottom plate, a plurality of connecting columns and two support plates. The top plate is located above the bottom plate, and both ends of the plurality of connecting columns are fixedly connected to the top plate and the bottom plate respectively. The two support plates are respectively arranged on both sides of the upper surface of the top plate for supporting both ends of the iron pipe.

[0007] As a further improvement of the present invention, the contact surface between the support plate and the iron pipe is arranged as a downwardly concave arc-shaped structure, and a limiting plate for limiting the iron pipe is arranged on the side of the support plate away from the iron pipe. In the vertical direction, the distance from the top of the limiting plate to the axis of the iron pipe is less than the outer diameter of the iron pipe and greater than the inner diameter of the iron pipe.

[0008] As a further improvement of the present invention, a connecting plate is fixedly connected to the inner wall of the gear ring, and a first cylinder is fixedly connected to the connecting plate. The telescopic end of the first cylinder is fixedly connected to the sealing member.

[0009] As a further improvement of the present invention, the power component includes: a first motor, a first gear, a second gear and a third gear. The first motor is fixedly connected to the moving frame, the output end of the first motor is fixedly connected to the first gear, the second gear and the third gear are both rotatably connected to the moving frame, and the second gear is simultaneously adapted to the first gear and the third gear. The third gear is adapted to the gear ring through the through hole.

[0010] As a further improvement of the present invention, a rectangular groove is formed on the top plate along the length direction of the iron pipe; the first driving component includes: a second motor and a screw rod. The second motor is fixedly connected to the base, the screw rod is arranged through the rectangular groove, the axis of the screw rod is parallel to the axis of the iron pipe, one end of the screw rod passes out of the base and is fixedly connected to the second motor, and the moving frame is threadedly connected to the screw rod.

[0011] As a further improvement of the present invention, the second driving assembly includes a first hydraulic cylinder, a mounting seat, and a second hydraulic cylinder. The first hydraulic cylinder is arranged on the bottom plate, and the telescopic end of the first hydraulic cylinder is fixedly connected to the mounting seat to drive the mounting seat to move in the vertical direction. The second hydraulic cylinder is fixedly connected to the mounting seat, and the telescopic end of the second hydraulic cylinder is connected to the corresponding hydraulic press to push the hydraulic press to move along the axial direction of the iron pipe, so as to selectively fill water into the iron pipe.

[0012] As a further improvement of the present invention, the iron pipe casting defect detection device further includes a connector. A flow channel is penetrated inside the connector. A first connecting portion and a second connecting portion are arranged on both sides of the connector. The outer diameter dimension of the first connecting portion is adapted to the inner diameter of the iron pipe, and the outer diameter of the second connecting portion is adapted to the inner diameter of the hydraulic press. The flow channel is communicated with the water outlet of the hydraulic press and the iron pipe.

[0013] As a further improvement of the present invention, the iron pipe casting defect detection device further includes a marking assembly for selectively marking on the surface of the iron pipe. The marking assembly includes a support seat, a second cylinder, a mounting plate, and a marking member. The support seat is fixedly connected to the connecting plate. The second cylinder is fixedly connected to the support seat, and the telescopic end of the second cylinder is fixedly connected to the mounting plate. A mounting hole is opened on the mounting plate, and the marking member is installed in the mounting hole by interference fit. In the axial direction of the iron pipe, one end of the marking member close to the iron pipe is arranged close to the edge of the sealing member.

[0014] As a further improvement of the present invention, the marking assembly further includes an L-shaped positioning plate. The L-shaped positioning plate includes a vertical portion and a horizontal portion. One end of the vertical portion is fixedly connected to the mounting plate, and the other end of the vertical portion is fixedly connected to the horizontal portion. The horizontal portion is in contact with the end of the marking member away from the iron pipe.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, the annular seat is concentrically arranged with the iron pipe, and a toothed ring is arranged inside the annular seat. The rotation of the toothed ring drives the sealing member to rotate in contact with the surface of the iron pipe, and the first driving assembly drives the sealing member to move along the axial direction of the iron pipe, so that the sealing detection of the entire iron pipe can be realized, and the areas with gaps or holes on the iron pipe can be limited, which is convenient for the staff to quickly find the positions with gaps or holes on the iron pipe and detect and repair them.

[0017] 2. The present invention provides a marking member at the edge of the seal, which is used to mark the gaps or holes on the iron pipe, so as to more conveniently and intuitively define the positions of the gaps or holes, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the first three-dimensional structure schematic diagram of a detection device for casting defects of an iron pipe according to an embodiment of the present invention;

[0019] Figure 2 is the second three-dimensional structure schematic diagram of a detection device for casting defects of an iron pipe according to an embodiment of the present invention;

[0020] Figure 3 is the top view structure schematic diagram of a detection device for casting defects of an iron pipe according to an embodiment of the present invention;

[0021] Figure 4 is Figure 3 the enlarged view of part A in

[0022] Figure 5 is the first three-dimensional structure schematic diagram of the top view section of a detection device for casting defects of an iron pipe according to an embodiment of the present invention;

[0023] Figure 6 is Figure 5 the enlarged view of part B in

[0024] Figure 7 is the partial structure schematic diagram of the second top view section of a detection device for casting defects of an iron pipe according to an embodiment of the present invention;

[0025] Figure 8 is Figure 7 the enlarged view of part C in

[0026] Figure 9 is the partial structure schematic diagram of the front view section of a detection device for casting defects of an iron pipe according to an embodiment of the present invention;

[0027] Figure 10 is the partial structure schematic diagram of the side view section of a detection device for casting defects of an iron pipe according to an embodiment of the present invention.

[0028] In the figure: 1, iron pipe; 2, hydraulic press; 3, base; 31, top plate; 311, rectangular groove; 32, bottom plate; 33, connecting column; 34, support plate; 341, limiting plate; 4, detection assembly; 41, mounting frame; 411, annular seat; 4111, cavity; 4112, through hole; 412, moving frame; 42, gear ring; 43, connecting plate; 44, first cylinder; 45, seal; 46, power assembly; 461, first motor; 462, first gear; 463, second gear; 464, third gear; 5, first driving assembly; 51, second motor; 52, screw; 6, second driving assembly; 61, first hydraulic cylinder; 62, mounting seat; 63, second hydraulic cylinder; 7, connector; 8, marking assembly; 81, support seat; 82, second cylinder; 83, mounting plate; 84, marking piece; 9, L-shaped positioning plate; 91, vertical part; 92, horizontal part. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figures 1-10 shown, a detection device for casting defects of an iron pipe includes an iron pipe 1, two hydraulic presses 2, a base 3, a detection assembly 4, a first driving assembly 5 and two second driving assemblies 6. Among them, the iron pipe 1 is the object to be detected. The hydraulic press 2 is a prior art, used to fill water into the iron pipe 1 and monitor the internal water pressure situation thereof, so as to judge whether there are cracks and holes on the iron pipe 1. The base 3 mainly plays a role of support and installation, and can provide a support and installation carrier for other components. The detection assembly 4 is mainly used to detect the positions of cracks or holes on the iron pipe 1. The first driving assembly 5 is mainly used to drive the detection assembly 4 to move along the axial direction of the iron pipe 1, so that the iron pipe 1 can be comprehensively detected. The second driving assembly 6 mainly cooperates with the hydraulic press 2 to drive the hydraulic press 2 to move, so as to selectively cooperate with the iron pipe 1.

[0031] Specifically, as Figure 1As shown, the base 3 includes: a top plate 31, a bottom plate 32, a plurality of connecting columns 33 and two support plates 34. The top plate 31 is located above the bottom plate 32, and both ends of the plurality of connecting columns 33 are fixedly connected to the top plate 31 and the bottom plate 32 respectively. The two support plates 34 are respectively arranged on both sides of the upper surface of the top plate 31 and are used to support both ends of the iron pipe 1. Among them, both the top plate 31 and the bottom plate 32 mainly play the roles of installation and support, and can divide the space in the vertical direction, facilitating the installation of corresponding components. A rectangular groove 311 is formed on the top plate 31 along the length direction of the iron pipe 1. The rectangular groove 311 mainly plays the role of installation.

[0032] In addition, as Figure 1 , Figure 9 and Figure 10 shown, the contact surface between the support plate 34 and the iron pipe 1 is set as a downward concave arc structure. The design of the arc structure can use the protrusions on both sides of the support plate 34 to limit the iron pipe 1 to a certain extent and reduce the situation of the iron pipe 1 slipping off the support plate 34. A limiting plate 341 for limiting the iron pipe 1 is arranged on the side of the support plate 34 away from the iron pipe 1. The limiting plate 341 is mainly used to limit the movement of the iron pipe 1 in its axial direction.

[0033] In the vertical direction, the distance from the top of the limiting plate 341 to the axis of the iron pipe 1 is less than the outer diameter of the iron pipe 1 and greater than the inner diameter of the iron pipe 1. It should be noted that the distance from the top of the limiting plate 341 to the axis of the iron pipe 1 is less than the outer diameter of the iron pipe 1, so as to ensure that the limiting plate 341 can contact the iron pipe 1 and thus play a role in limiting the iron pipe 1. The distance from the top of the limiting plate 341 to the axis of the iron pipe 1 is greater than the inner diameter of the iron pipe 1, so as to avoid the limiting plate 341 interfering with the space inside the iron pipe 1 and facilitating the connection and cooperation between the water pressure press 2 and the port of the pipeline.

[0034] In addition, as Figure 1 and Figure 10As shown, the detection component 4 includes: a mounting frame 41 and a power component 46. The mounting frame 41 includes: an annular seat 411 and a moving frame 412 connected to the annular seat 411. It should be noted that during use, the iron pipe 1 is located inside the annular seat 411 and is concentric with the annular seat 411. An annular cavity 4111 communicating with its inner peripheral wall is provided inside the annular seat 411, and a through hole 4112 communicating with the cavity 4111 is provided on the outer wall of the annular seat 411. A gear ring 42 is rotatably connected inside the cavity 4111. An arc-shaped seal 45 is fixedly connected to the inner wall of the gear ring 42. The seal 45 rotates with the gear ring 42 to selectively seal a part of the surface of the iron pipe 1. The power component 46 is arranged on the moving frame 412 and cooperates with the gear ring 42 through the through hole 4112 to drive the gear ring 42 to rotate. It should be noted that the gear ring 42 is concentric with the annular seat 411 and can rotate inside the annular seat 411. The seal 45 can be a rubber part, which can make the sealing effect better.

[0035] During use, first, the iron pipe 1 is sleeved into the annular seat 411, and the two ends of the iron pipe 1 are placed on the supporting plates 34 on both sides. Then, the two water pressure presses 2 are connected to the two ends of the iron pipe 1 and water is filled into the iron pipe 1. It should be noted that when filling water into the iron pipe 1, one of the water pressure presses 2 fills water into the iron pipe 1, and there is a certain gap between the other water pressure press 2 and the iron pipe 1. After the air inside the iron pipe 1 is discharged, the other water pressure press 2 is sealed with the iron pipe 1. After the two water pressure presses 2 fill water into the iron pipe 1, the power component 46 is started, and the power component 46 drives the seal 45 to rotate along the surface of the iron pipe 1. When there are no cracks or holes in the iron pipe 1, the water pressure inside it will remain stable. When there are cracks or holes in the iron pipe 1, the water pressure inside the iron pipe 1 will decrease. When the seal 45 rotates to be in sealing cooperation with the cracks or holes on the iron pipe 1, the water pressure inside the iron pipe 1 will increase and fluctuate. At this time, it indicates that there are cracks or holes at the place where the seal 45 is in contact with the iron pipe 1. The staff can mark the place where the seal 45 is in contact with the iron pipe 1. After the detection of other positions of the iron pipe 1 is completed, the marked place is detected and repaired.

[0036] As an alternative embodiment, such as Figure 4 and Figure 8As shown in the figure, a connecting plate 43 is fixedly connected to the inner wall of the gear ring 42. A first cylinder 44 is fixedly connected to the connecting plate 43, and the telescopic end of the first cylinder 44 is fixedly connected to the seal 45. Among them, the connecting plate 43 mainly plays a role in installation. It should be noted that the telescopic direction of the first cylinder 44 is along the radial direction of the iron pipe 1. The first cylinder 44 is used to drive the seal 45 to move, so as to facilitate the adjustment of the position of the seal 45. On the one hand, it is convenient for the iron pipe 1 to extend into the inside of the annular seat 411, and on the other hand, it can also be applied to the detection of iron pipes 1 with different diameters, making the use more flexible.

[0037] Furthermore, as Figure 10 shown, the power assembly 46 includes: a first motor 461, a first gear 462, a second gear 463 and a third gear 464. The first motor 461 is fixedly connected to the moving frame 412. The output end of the first motor 461 is fixedly connected to the first gear 462. Both the second gear 463 and the third gear 464 are rotatably connected to the moving frame 412, and the second gear 463 is simultaneously adapted to the first gear 462 and the third gear 464. The third gear 464 is adapted to the gear ring 42 through the through hole 4112. When in use, the first motor 461 is started, and the first motor 461 will drive the first gear 462 to rotate. The rotation of the first gear 462 can drive the third gear 464 to rotate through the transmission of the second gear 463. Since the third gear 464 meshes with the gear ring 42, the rotation of the third gear 464 can drive the gear ring 42 to rotate, and then the gear ring 42 can drive the seal 45 to rotate, so as to realize the circumferential sealing detection of the iron pipe 1.

[0038] In addition, as Figure 1 and Figure 3 shown, the first driving assembly 5 is arranged on the base 3 and cooperates with the moving frame 412 to drive the moving frame 412 to move along the axial direction of the iron pipe 1. Specifically, the first driving assembly 5 includes: a second motor 51 and a screw rod 52. The second motor 51 is fixedly connected to the base 3. Specifically, the second motor 51 is fixedly connected to the top plate 31. The screw rod 52 is arranged through the rectangular groove 311. The axis of the screw rod 52 is parallel to the axis of the iron pipe 1. One end of the screw rod 52 passes out of the outside of the top plate 31 and is fixedly connected to the second motor 51. The moving frame 412 is threadedly connected to the screw rod 52. It should be noted that both ends of the screw rod 52 are rotatably connected to the two opposite inner walls in the rectangular groove 311, and one end of it passes out of the outside of the top plate 31 and is fixedly connected to the second motor 51. When in use, the second motor 51 is started, and the second motor 51 will drive the screw rod 52 to rotate. The rotation of the screw rod 52 will drive the moving frame 412 to move along the axial direction of the screw rod 52, that is, along the axial direction of the iron pipe 1, so as to drive the seal 45 to move along the axial direction of the iron pipe 1, and then it is convenient to perform the sealing detection on the entire iron pipe 1.

[0039] In addition, as Figure 1 shown, two second driving components 6 are arranged on the base 3 and respectively cooperate with two hydraulic pressure presses 2 to drive the corresponding hydraulic pressure presses 2 to move, for selectively filling water into the iron pipe 1 from both ends of the iron pipe 1. Specifically, the second driving component 6 includes: a first hydraulic cylinder 61, a mounting seat 62 and a second hydraulic cylinder 63. The first hydraulic cylinder 61 is fixedly connected to the bottom plate 32, and the telescopic end of the first hydraulic cylinder 61 is fixedly connected to the mounting seat 62 to drive the mounting seat 62 to move in the vertical direction. The second hydraulic cylinder 63 is fixedly connected to the mounting seat 62, and the telescopic end of the second hydraulic cylinder 63 is connected to the corresponding hydraulic pressure press 2 to push the hydraulic pressure press 2 to move along the axial direction of the iron pipe 1, for selectively filling water into the iron pipe 1.

[0040] That is to say, the telescopic direction of the first hydraulic cylinder 61 is the vertical direction, and the telescopic direction of the second hydraulic cylinder 63 is the horizontal direction. It should be noted that in the initial state, the hydraulic pressure press 2 is separated from the iron pipe 1. After the iron pipe 1 is placed on the support plate 34, the first hydraulic cylinder 61 is started, and the first hydraulic cylinder 61 extends upward to lift the hydraulic pressure press 2 upward through the mounting seat 62 and the second hydraulic cylinder 63. When it extends to the preset position, the first hydraulic cylinder 61 is closed, and the second hydraulic cylinder 63 is started. The second hydraulic cylinder 63 drives the corresponding hydraulic pressure press 2 to move towards the port of the iron pipe 1 until the water outlet of the hydraulic pressure press 2 is hermetically connected to the port of the iron pipe 1. After the inspection of the iron pipe 1 is completed, the second hydraulic cylinder 63 and the first hydraulic cylinder 61 are started successively to retract the hydraulic pressure press 2 to the initial position, which is convenient for taking out the iron pipe 1.

[0041] As an alternative embodiment, as Figure 9 shown, the iron pipe 1 casting defect detection device further includes: a connector 7. A flow channel is formed through the interior of the connector 7. A first connection portion and a second connection portion are arranged on both sides of the connector 7. The outer diameter dimension of the first connection portion is adapted to the inner diameter of the iron pipe 1, and the outer diameter of the second connection portion is adapted to the inner diameter of the hydraulic pressure press 2. The flow channel is communicated with the water outlet of the hydraulic pressure press 2 and the iron pipe 1.

[0042] Among them, the connector 7 mainly plays a role of connection and communication. The outer diameter dimension of the first connection portion is adapted to the inner diameter of the iron pipe 1, that is, the first connection portion can be hermetically connected inside the iron pipe 1. The outer diameter of the second connection portion is adapted to the inner diameter of the water outlet of the hydraulic pressure press 2, that is, the second connection portion can be hermetically connected inside the water outlet of the hydraulic pressure press 2, and the flow channel in the connector 7 is communicated with the water outlet of the hydraulic pressure press 2 and the iron pipe 1. In this way, the water flowing out of the water outlet of the hydraulic pressure press 2 can flow into the iron pipe 1 through the connector 7.

[0043] It should be noted that the outer diameter dimensions of the first connecting portion and the second connecting portion can be the same or different. Since the diameter of the water outlet of the water pressure press 2 is usually fixed, the first connecting portion with a suitable outer diameter can be processed and selected to adapt to the detection of iron pipes 1 with different inner diameters, thus having a wider application range.

[0044] In addition, as Figures 4-6 shown, the iron pipe 1 casting defect detection device further includes: a marking assembly 8, which is used to selectively mark the surface of the iron pipe 1. The marking assembly 8 includes a support base 81, a second cylinder 82, a mounting plate 83, and a marking member 84. The support base 81 is fixedly connected to the connecting plate 43, so that when the gear ring 42 drives the connecting plate 43 to rotate, the support base 81 can also rotate along with it. The second cylinder 82 is fixedly connected to the support base 81, and the telescopic end of the second cylinder 82 is fixedly connected to the mounting plate 83. Mounting holes are formed in the mounting plate 83, and the marking member 84 is installed in the mounting holes by interference fit. In the axial direction of the iron pipe 1, one end of the marking member 84 close to the iron pipe 1 is arranged close to the edge of the seal 45.

[0045] It should be noted that in the axial direction of the iron pipe 1, one end of the marking member 84 close to the iron pipe 1 is arranged close to the edge of the seal 45, so that the marked position can be closer to the position of the gap or hole on the iron pipe 1, which is convenient for subsequent workers to detect the specific position.

[0046] During use, during the process of the seal 45 rotating in contact with the surface of the iron pipe 1, when the pressure gauge on the water pressure press 2 detects a change in the pressure inside the iron pipe 1, the second cylinder 82 is started. The second cylinder 82 will drive the marking member 84 to move towards the iron pipe 1 until it contacts the iron pipe 1, and then continue to rotate the gear ring 42 to make the marking member 84 mark a range on the iron pipe 1. The specific size of the marked range can be determined according to the actual working conditions. The marking member 84 can be a marking pen or other suitable object.

[0047] As an alternative embodiment, the marking assembly 8 can be set in two groups and are respectively located on both sides of the seal 45, so that the marking members 84 on both sides can be used for joint marking. The range defined between the two marks is the position of the gap or hole on the iron pipe 1, which is more conducive to the detection by the workers.

[0048] In addition, as Figure 4As shown, the marking component 8 further includes an L-shaped positioning plate 9. The L-shaped positioning plate 9 includes a vertical portion 91 and a horizontal portion 92. One end of the vertical portion 91 is fixedly connected to the mounting plate 83, and the other end of the vertical portion 91 is fixedly connected to the horizontal portion 92. The horizontal portion 92 is in contact with the end of the marking member 84 away from the iron pipe 1. The vertical portion 91 can be fixedly connected to the mounting plate 83 by screws, which facilitates the disassembly of the vertical portion 91 and thus the disassembly of the marking member 84. By arranging the horizontal portion 92 in contact with the end of the marking member 84 away from the iron pipe 1, the horizontal portion 92 can be used to limit the marking member 84, so that when the marking member 84 contacts the iron pipe 1, the pressure of the marking member 84 on the iron pipe 1 can be kept unchanged, which is beneficial to the marking member 84 to perform the marking work better.

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An iron pipe casting defect detection device, comprising: An iron pipe (1) and two hydraulic pressure presses (2), characterized in that the iron pipe casting defect detection device further comprises: a base (3); A detection assembly (4), which includes: a mounting frame (41) and a power assembly (46). The mounting frame (41) includes: an annular seat (411) and a moving frame (412) connected to the annular seat (411). An annular cavity (4111) communicating with its inner peripheral wall is provided inside the annular seat (411). A through hole (4112) communicating with the cavity (4111) is provided on the outer wall of the annular seat (411). A gear ring (42) is rotatably connected inside the cavity (4111). A sealing member (45) with an arc-shaped structure is connected to the inner wall of the gear ring (42). The sealing member (45) rotates with the gear ring (42) to selectively seal a part of the surface of the iron pipe (1). The power assembly (46) is arranged on the moving frame (412) and cooperates with the gear ring (42) through the through hole (4112) to drive the gear ring (42) to rotate; A first driving assembly (5), which is arranged on the base (3) and cooperates with the moving frame (412) to drive the moving frame (412) to move along the axial direction of the iron pipe (1); Two second driving assemblies (6), which are arranged on the base (3) and respectively cooperate with the two hydraulic pressure presses (2) to drive the corresponding hydraulic pressure presses (2) to move, for selectively filling water into the iron pipe (1) from both ends of the iron pipe (1).

2. The iron pipe casting defect detection device according to claim 1, characterized in that, The base (3) includes: a top plate (31), a bottom plate (32), a plurality of connecting columns (33) and two support plates (34). The top plate (31) is located above the bottom plate (32), and both ends of the plurality of connecting columns (33) are fixedly connected to the top plate (31) and the bottom plate (32) respectively. The two support plates (34) are respectively arranged on both sides of the upper surface of the top plate (31) for supporting both ends of the iron pipe (1).

3. The iron pipe casting defect detection device according to claim 2, wherein, The contact surface between the support plate (34) and the iron pipe (1) is arranged as a downwardly concave arc-shaped structure, and a limiting plate (341) for limiting the iron pipe (1) is arranged on the side of the support plate (34) away from the iron pipe (1). In the vertical direction, the distance from the top of the limiting plate (341) to the axis of the iron pipe (1) is less than the outer diameter dimension of the iron pipe (1) and greater than the inner diameter dimension of the iron pipe (1).

4. The iron pipe casting defect detection device according to claim 1, characterized in that, A connecting plate (43) is fixedly connected to the inner wall of the gear ring (42), and a first cylinder (44) is fixedly connected to the connecting plate (43). The telescopic end of the first cylinder (44) is fixedly connected to the sealing member (45).

5. The iron pipe casting defect detection device according to claim 1, characterized in that, The power assembly (46) includes: a first motor (461), a first gear (462), a second gear (463), and a third gear (464). The first motor (461) is fixedly connected to the moving frame (412). The output end of the first motor (461) is fixedly connected to the first gear (462). Both the second gear (463) and the third gear (464) are rotatably connected to the moving frame (412), and the second gear (463) is simultaneously adapted to the first gear (462) and the third gear (464). The third gear (464) is adapted to the gear ring (42) through the through hole (4112).

6. The iron pipe casting defect detection device according to claim 2, characterized in that, A rectangular groove (311) is formed in the top plate (31) along the length direction of the iron pipe (1); The first driving assembly (5) includes: a second motor (51) and a screw rod (52). The second motor (51) is fixedly connected to the base (3). The screw rod (52) is disposed through the rectangular groove (311). The axis of the screw rod (52) is parallel to the axis of the iron pipe (1). One end of the screw rod (52) extends out of the base (3) and is fixedly connected to the second motor (51). The moving frame (412) is threadedly connected to the screw rod (52).

7. An iron pipe casting defect detection device according to claim 2, characterized in that, The second driving assembly (6) includes: a first hydraulic cylinder (61), a mounting seat (62), and a second hydraulic cylinder (63). The first hydraulic cylinder (61) is disposed on the bottom plate (32), and the telescopic end of the first hydraulic cylinder (61) is fixedly connected to the mounting seat (62) to drive the mounting seat (62) to move in the vertical direction; The second hydraulic cylinder (63) is fixedly connected to the mounting seat (62), and the telescopic end of the second hydraulic cylinder (63) is connected to the corresponding water pressure press (2) to push the water pressure press (2) to move along the axial direction of the iron pipe (1) to selectively fill water into the iron pipe (1).

8. An iron pipe casting defect detection device according to claim 7, characterized in that, The iron pipe (1) casting defect detection device further includes: a connector (7). A flow channel is formed through the inside of the connector (7). A first connection portion and a second connection portion are provided on both sides of the connector (7). The outer diameter dimension of the first connection portion is adapted to the inner diameter of the iron pipe (1). The outer diameter of the second connection portion is adapted to the inner diameter of the water pressure press (2). The flow channel is communicated with the water outlet of the water pressure press (2) and the iron pipe (1).

9. The iron pipe casting defect detection device according to claim 1, characterized in that, The casting defect detection device for the iron pipe (1) further includes: a marking component (8) for selectively marking on the surface of the iron pipe (1). The marking component (8) includes: a support base (81), a second cylinder (82), a mounting plate (83), and a marking member (84). The support base (81) is fixedly connected to the connecting plate (43). The second cylinder (82) is fixedly connected to the support base (81), and the telescopic end of the second cylinder (82) is fixedly connected to the mounting plate (83). A mounting hole is formed in the mounting plate (83), and the marking member (84) is installed in the mounting hole by interference fit. In the axial direction of the iron pipe (1), the end of the marking member (84) close to the iron pipe (1) is arranged close to the edge of the seal (45).

10. The iron pipe casting defect detection device according to claim 9, characterized in that, The marking component (8) further includes: an L-shaped positioning plate (9). The L-shaped positioning plate (9) includes: a vertical portion (91) and a horizontal portion (92). One end of the vertical portion (91) is fixedly connected to the mounting plate (83), and the other end of the vertical portion (91) is fixedly connected to the horizontal portion (92). The horizontal portion (92) is in contact with the end of the marking member (84) away from the iron pipe (1).

Images