Pipe fitting conveying device and pipe fitting pipe end detection system comprising same

Abstract

The utility model discloses a pipe fitting transmission device and a pipe fitting pipe end detection system comprising the same, and belongs to the field of pipe fitting transportation and detection, the pipe fitting transmission device comprises a storage line, a transition line and a blanking line which are sequentially arranged at intervals in the transverse direction, and the transition line comprises a transition frame and a transmission unit; the conveying units achieve position transfer of the pipe fittings through step structures capable of ascending and descending, the multiple conveying units and the multiple transition frames are arranged at intervals in the longitudinal direction, and a synchronizing mechanism is arranged to achieve synchronous operation of the conveying units and the transition frames. Furthermore, detection devices are arranged at the two ends of the transition line, so that the transition line serves as a detection line to detect the end of the pipe fitting. The pipe end detection device can realize automatic transfer of pipe fittings and automatic detection of pipe ends, has the characteristics of high automation degree and high detection efficiency, and has good popularization and application values.

Description

Technical Field

[0001] The utility model belongs to the field of pipe transportation and detection, and specifically relates to a pipe transmission device and a pipe end detection system comprising the same. Background Art

[0002] In the field of non-destructive testing automation, with the development of modern non-destructive testing technology and industrial automation, various types of non-destructive testing automation equipment have gained more favor and application. As a non-destructive testing method with high sensitivity, high efficiency, low cost and environmental protection, magnetic flux leakage testing has been widely used in the field of non-destructive testing automation instead of manual testing.

[0003] Oilfield pipelines are pipeline systems used to transport crude oil, natural gas and other oilfield products during oilfield production. Through non-destructive testing, the structural integrity and safety of the ends of the oil pipes can be evaluated, and potential defects such as cracks, corrosion, and wear can be found, which helps to avoid accidents caused by problems at the ends of the pipes and ensure the safe operation of the pipes. In actual use, due to factors such as harsh working environment, strong corrosion, physical damage, wear, and design defects, multi-directional crack defects and corrosion are prone to occur, and the presence of cracks will lead to a decrease in the strength and stability of the oil pipes. In severe cases, puncture leakage or breakage may even cause accidents. Therefore, regular non-destructive testing of the ends of the oil pipes is an indispensable and important task in the operation and maintenance of oil pipelines. Traditional oil pipe end detection is magnetic particle testing and manual ultrasonic testing, which mostly rely on manual labor and have low detection efficiency. The magnetic leakage detection method is non-destructive, can detect surface and near-surface defects, is suitable for pipes with complex shapes, and can realize automated detection, which can greatly improve the detection efficiency.

[0004] Therefore, there is a need for a transmission device with a high degree of automation that can realize automatic transportation of pipes and a detection system for detecting the ends of pipes. Utility Model Content

[0005] In response to one or more of the above-mentioned defects or improvement needs in the prior art, the utility model provides a pipe transmission device and a pipe end detection system comprising the same, wherein the detection efficiency and accuracy of the pipes are effectively improved through automated pipe transportation and detection.

[0006] To achieve the above-mentioned purpose, the utility model provides a pipe transmission device and a pipe end detection system including the same, which comprises a material storage line, a transition line and a material discharge line which are sequentially arranged at intervals in the transverse direction, wherein the transition line comprises at least two transition racks and at least two transmission units which are arranged at intervals in the longitudinal direction,

[0007] The transmission unit includes a moving part and a flipping plate arranged on the moving part, one side of the flipping plate is a step structure, and the other side of the flipping plate is fixedly connected to the moving part so that the step structure rises or falls.

[0008] The step structure comprises a first step surface and a second step surface, and the two step surfaces are inclined surfaces, and the inclined surfaces are inclined from one end close to the material storage line to the other end.

[0009] As a further improvement of the utility model, the moving part includes a base and a rotating shaft rotatably connected to the base, and a side edge of the flipping plate away from its step surface is fixedly connected to the rotating shaft to achieve the flipping of the flipping plate.

[0010] As a further improvement of the utility model, a rocker arm is provided at one end of the rotating shaft, one end of the rocker arm is fixedly connected to the end of the rotating shaft, and the other end thereof is rotatably connected to the connecting block, and a first connecting rod is provided between two adjacent connecting blocks to realize synchronous rotation of each of the transmission units.

[0011] As a further improvement of the utility model, a driving mechanism is also provided corresponding to the transmission unit. The driving mechanism is arranged at the end of the transition line. The driving mechanism is connected to a connecting block close to the end of the transition line and is used to drive the connecting block to perform longitudinal reciprocating motion.

[0012] As a further improvement of the utility model, the transition frame includes a bracket and a positioning groove arranged on the top of the bracket for carrying the pipe fittings.

[0013] The positioning groove is a "V"-shaped structure, and the bottom of the "V"-shaped structure is arranged opposite to the second step surface in the longitudinal direction.

[0014] As a further improvement of the present invention, a lifting mechanism is provided between the positioning slot and the bracket to achieve lifting and lowering adjustment of the positioning slot.

[0015] As a further improvement of the utility model, the lifting mechanism includes a lifting rod and a driving part, the top end of the lifting rod is fixedly connected to the positioning groove, and the driving part includes a rack arranged on the lifting rod and a gear meshing with the rack.

[0016] As a further improvement of the utility model, a second connecting rod is provided between two adjacent lifting mechanisms, and two ends of the second connecting rod are respectively fixedly connected to the two gears to achieve synchronous movement of the two adjacent lifting mechanisms.

[0017] The utility model also proposes a pipe end detection system, comprising a pipe transmission device and two detection devices respectively arranged at the longitudinal ends of a transition line, for detecting the ends of the pipes placed on the transition line.

[0018] The detection device comprises a base, a transverse magnetization coil arranged on the base, and a detection probe inserted in the transverse magnetization coil.

[0019] As a further improvement of the utility model, a translation platform is provided at the bottom of the transverse magnetization coil, and the translation platform is slidably connected to the base to drive the transverse magnetization coil and the detection probe to perform longitudinal reciprocating motion.

[0020] and / or

[0021] The tail of the detection probe is provided with a rotating seat to realize the rotation of the detection probe.

[0022] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0023] In general, the above technical solution conceived by the utility model has the following beneficial effects compared with the prior art:

[0024] (1) The pipe transmission device and the pipe end detection system including the same of the utility model are designed to have a side of a turning plate as a step structure, including a first step surface and a second step surface, wherein the second step surface is higher than the first step surface, and the two step surfaces are inclined from one end close to the storage rack to the other end, so that when the turning plate is erected, the first step surface can lift the pipes on the storage rack and transfer them to the transition rack, and the second step surface can also lift the pipes on the transition rack and transfer them to the unloading rack, thereby realizing the pipe transfer of the pipe transmission device;

[0025] (2) The pipe transmission device of the utility model and the pipe end detection system including the same, wherein the turning plate is fixedly connected to the rotating shaft, so that the step structure on the turning plate can be raised and lowered by the driving of the rotating shaft, and the rotating shafts in each transmission unit are connected by a first connecting rod, so that the synchronous movement of each turning plate in the transition line can be achieved by driving only one of the rotating shafts to rotate;

[0026] (3) The pipe transmission device and the pipe end detection system including the same of the utility model are configured by setting the positioning groove in the transition line as a "V"-shaped structure, wherein the bottom of the "V"-shaped structure is arranged opposite to the second step surface in the longitudinal direction, so that the second step surface can lift the pipe from the transition rack, and the first step surface is arranged opposite to the storage line, so that the pipe on the storage line can be lifted, and the gap formed by the first step surface and the second step surface can fall into the range of the opening of the "V"-shaped structure in the longitudinal direction, so as to transfer the key in the storage line to the transition line;

[0027] (4) The pipe transmission device and the pipe end detection system including the same of the utility model are provided with a lifting mechanism corresponding to the positioning groove, the lifting mechanism includes a lifting rod and a driving part, the driving part includes a rack provided on the lifting rod and a gear meshing with the rack, the height of the positioning groove is adjusted by rotating the gear, and two adjacent gears are connected by a second connecting rod, thereby realizing the synchronous lifting of each lifting mechanism;

[0028] (5) The pipe transmission device and the pipe end detection system containing the same of the present invention are formed by arranging detection devices at both ends of the transition line in the pipe transmission device to form a pipe end detection system. The detection device includes a sensor, a transverse magnetization coil and a detection probe, which are used to detect the position of the pipe and realize the detection and flaw detection of the pipe. Therefore, compared with the traditional manual flaw detection method, the present invention solves the problems of low efficiency, misjudgment and difficulty in ensuring accuracy of the traditional manual flaw detection method. By integrating intelligent sensing and automatic control, the labor cost and scrap rate of pipe end flaw detection are greatly reduced, and the production efficiency and average production quality are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the pipe end detection system of the utility model embodiment;

[0030] Figure 2 It is a front view of the material storage rack and the material unloading rack in the embodiment of the utility model;

[0031] Figure 3 It is a schematic diagram of the overall structure of the pipe transmission device in the embodiment of the utility model;

[0032] Figure 4 It is a top view of the pipe transmission device in the embodiment of the utility model;

[0033] Figure 5 It is a structural schematic diagram of a pipe transmission device and a driving unit in an embodiment of the utility model;

[0034] Figure 6 It is a front view of the transition frame in the embodiment of the utility model;

[0035] Figure 7 It is a structural schematic diagram of a transition frame in an embodiment of the utility model;

[0036] Figure 8 It is a schematic diagram of the overall structure of the detection device in the embodiment of the utility model;

[0037] In all the drawings, the same reference numerals represent the same technical features, specifically: 1. pipe fittings; 2. storage racks; 3. unloading racks; 4. transmission units; 401. turning plates; 402. bases; 403. rotating shafts; 404. bearing seats; 5. driving units; 501. driving mechanisms; 502. connecting blocks; 503. rocker arms; 504. first connecting rods; 6. transition racks; 601. brackets; 602. lifting mechanisms; 603. "V"-shaped plates; 604. guide seats; 605. second connecting rods; 606. couplings; 7. detection devices; 701. bases; 702. transverse magnetization coils; 703. detection probes; 704. rotating seats; 705. translation stages; 706. guide rails; 707. screw modules. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a 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, a first feature being "above", "above" or "above" a 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. A first feature being "below", "below" or "below" a 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.

[0043] Example:

[0044] The pipe transmission device in the preferred embodiment of the utility model is as follows Figures 1 to 8 As shown in , the pipe transmission device includes a storage line, a transition line and a discharge line arranged in sequence in the transverse direction, the storage line and the discharge line respectively include a plurality of storage racks 2 and discharge racks 3 arranged in the longitudinal direction, for realizing the storage and discharge of pipes 1, and the transition line includes a transition rack 6 for carrying pipes 1 and a transmission unit 4 for transporting pipes 1, and at least two transition racks 6 and transmission units 4 are arranged in the longitudinal direction to carry pipes 1 and ensure the stable transportation of pipes 1. To further illustrate, the utility model takes the length direction of the pipe 1 as the longitudinal direction, the height direction as the vertical direction, and the directions perpendicular to the longitudinal direction and the vertical direction as the transverse direction.

[0045] Specifically, Figure 3~4 As shown, the transmission unit 4 includes a moving part and a flipping plate 401 arranged on the moving part, wherein one side of the flipping plate 401 is a step structure, which includes a first step surface and a second step surface, wherein the second step surface is higher than the first step surface, and a gap is formed at the intersection of the two. Furthermore, the second step surface is arranged close to the unloading line, and the first step surface is arranged close to the storage line, and each step surface is an inclined surface, and the inclined surface is inclined from one end close to the storage rack 2 to the other end. Further preferably, the side of the flipping plate 401 facing away from the step structure is fixedly connected to the moving part, and driven by the moving part, the step structure is raised or lowered. In addition, as Figure 2As shown, the storage line and the unloading line include a plurality of storage racks 2 and unloading racks 3 respectively, wherein the storage racks 2 and the unloading racks 3 are inclined from the material input to the material output, so that the pipe fittings 1 can move toward the material output, and a baffle is provided at the end of the storage rack 2 close to the transition line, and the side of the baffle facing away from the transition line is an inclined surface, so that the flipping plate 401 lifts the pipe fittings 1 from the storage rack 2 and transfers them to the transition line.

[0046] Furthermore, the first step surface corresponds to the material storage line, so that when the step structure rises, the first step surface abuts against the pipe 1 placed on the material storage line, and as the step structure gradually rises, the turning plate 401 lifts the pipe 1 and makes it leave the material storage line, and the pipe 1 will also move to the other end along the inclined surface, and just get stuck in the gap formed by the first step surface and the second step surface, and when the step structure descends, it just falls on the transition frame 6. At the same time, the second step surface also corresponds to the transition frame 6, and when the step structure rises again, the pipe 1 can be lifted up by the second step surface and moved to the unloading line.

[0047] In one embodiment, the moving part is an elevator, which includes a telescopic rod that can perform vertical reciprocating motion. The side of the flipping plate 401 away from the step structure is fixedly connected to one end of the telescopic rod, so that the flipping plate 401 can be lifted and lowered under the drive of the elevator, thereby realizing the transportation of the pipe 1.

[0048] In another embodiment, the moving part includes a base 402 and a rotating shaft 403 rotatably connected to the base 402. The rotating shaft 403 is arranged in the horizontal direction, and the side of the flipping plate 401 away from the step structure is fixedly connected to the side wall surface of the rotating shaft 403. Through the rotation of the rotating shaft 403, the step structure in the flipping plate 401 is gradually driven to rise or fall, so as to realize the transportation of the pipe 1. Furthermore, a bearing seat 404 is arranged between the rotating shaft 403 and the base 402 to realize the rotation connection between the two. The bearing seats 404 are arranged on the top of the base 402, and there are two bearing seats 404 arranged in the horizontal direction. The rotating shaft 403 is fixedly connected to the inner rings of the two bearing seats 404, respectively, so that each transmission unit 4 can stably support the pipe 1 during the transportation process.

[0049] Furthermore, a driving motor is provided at one end of the rotating shaft 403, wherein the rotating shaft of the driving motor is fixedly connected to the rotating shaft 403, and the driving part of the driving motor is fixedly connected to the outer shell of the bearing seat 404, and then the rotating shaft 403 is driven by the driving motor to realize the rotation of the rotating shaft 403.

[0050] In another preferred embodiment, Figure 5As shown, the corresponding transmission unit 4 is also provided with a driving unit 5, which includes a rocker arm 503 arranged at one end of the rotating shaft 403 and a connecting block 502 rotatably connected to the rocker arm 503, one end of the rocker arm 503 is fixedly connected to the end of the rotating shaft 403, and the other end of the rocker arm 503 is rotatably connected to the connecting block 502, and a driving mechanism 501 is provided corresponding to the connecting block 502, the movable part of the driving mechanism 501 is connected to the connecting block 502, and drives the connecting block 502 to perform longitudinal reciprocating motion, and then drives the rocker arm 503 to swing, so as to realize the rotation of the rotating shaft 403. Furthermore, two adjacent connecting blocks 502 are connected by a first connecting rod 504, so that when one of the connecting blocks 502 performs longitudinal reciprocating motion, it can drive the other connecting blocks 502 to move, thereby realizing the synchronous flipping motion of each transmission unit 4. Correspondingly, the driving mechanism 501 can drive any transmission unit 4 to drive other transmission units 4 to move. The driving mechanism 501 is arranged at either end of the transition line and is connected to the connecting block 502 in the transmission unit 4 near the end of the transition line, thereby driving the connecting block 502 to perform longitudinal reciprocating motion. Further preferably, the driving mechanism 501 is a cylinder, and the piston rod in the cylinder is connected to the connecting block 502, or the driving mechanism 501 can also be a stepping motor.

[0051] Furthermore, if Figures 6 and 7 As shown, the transition frame 6 includes a bracket 601 and a positioning groove arranged on the top of the bracket 601, and the positioning groove is used to carry the pipe 1. In order to achieve matching of the positioning groove with the step structure on the flipping plate 401, when the flipping plate 401 is lowered, the pipe 1 located on the first step surface just falls within the range of the positioning groove, and after the flipping plate 401 is re-erected, the second step surface can just lift up the pipe 1 accommodated in the positioning groove to complete the transmission of the pipe 1. Further preferably, the positioning groove is a "V"-shaped structure, that is, a structure that is wide at the top and narrow at the bottom, and its second step surface is arranged opposite to the bottom of the "V"-shaped structure in the longitudinal direction, and the gap formed by the first step surface and the second step surface also falls in the opening of the "V"-shaped structure in the longitudinal direction, so that when the flipping plate 401 is lowered, the pipe 1 can fall into the "V"-shaped structure.

[0052] Furthermore, a lifting mechanism 602 is provided between the positioning groove and the bracket 601 for realizing vertical lifting and lowering adjustment of the positioning groove to achieve matching with pipes of different specifications.

[0053] In a preferred embodiment, the bracket 601 is a frame structure, and a lifting mechanism 602 is arranged inside the frame structure. The lifting mechanism 602 includes a driving part and a lifting rod. The top end of the lifting rod is fixedly connected to the positioning slot, and the lifting movement of the lifting rod drives the positioning slot to be adjusted in the height direction.

[0054] Furthermore, the driving part includes a rack provided on the lifting rod and a gear meshing with the rack, and the gear is driven to rotate by a driving motor, thereby driving the lifting rod to perform vertical reciprocating motion. The gears in each transition frame 6 are coaxially arranged, and a second connecting rod 605 is arranged between the gears in two adjacent lifting mechanisms 602, so that the gears in each transition frame 6 can rotate synchronously, thereby realizing the synchronous lifting and lowering of the positioning slots in multiple transition frames 6 in the longitudinal direction. And one of the second connecting rods 605 is externally connected to a servo motor to realize the rotation of the second connecting rod 605. Further preferably, a coupling 606 is arranged between the gear and the second connecting rod 605 to realize the fixed connection between the gear and the second connecting rod 605.

[0055] Furthermore, the transition frame 6 is a plurality of longitudinally spaced apart, and the positioning groove can be set as a positioning plate, and a plurality of positioning plates form a support structure, and the positioning plate is preferably a "V"-shaped plate 603. Further preferably, a guide seat 604 is provided on the top of the bracket 601, which includes two guide rails spaced apart in the transverse direction, and is used to limit the positioning plate in the transverse / longitudinal direction to ensure that the positioning plate will not deflect when the lifting adjustment is performed. In addition, the surface of the positioning plate in contact with the pipe fitting 1 can be coated with an elastic material or a flexible material to avoid damage to the pipe fitting 1.

[0056] The utility model also proposes a pipe end detection system, which includes a pipe transmission device, and in the pipe end detection system, the transition line is used as the detection line, so detection devices 7 are respectively arranged at both ends of the transition line to detect the end of the pipe 1 arranged on the transition line. Figure 8 As shown in , the detection device 7 includes a base 701 arranged at the end of the transition line and a detection component arranged on the base 701, and the detection component includes a transverse magnetization coil 702 and a detection probe 703 inserted in the transverse magnetization coil 702. Further, the detection probe 703 is an internal detection transverse and longitudinal probe, and the detection probe 703 is externally connected to a signal acquisition and processing system for receiving the signal sent by the detection probe 703 for acquisition and processing, thereby completing the end detection of the pipe 1.

[0057] Furthermore, a rotating seat 704 is provided between the detection probe 703 and the base 701. The rotating seat 704 is connected to the tail of the detection probe 703 and is fixedly arranged on the bottom plate. The rotating seat 704 drives the detection probe 703 to perform a 180° reciprocating rotation to realize the detection of the inner side of the oil pipe.

[0058] Furthermore, a translation platform 705 is provided on the top of the base 701, and the translation platform 705 is slidably connected to the base 701, so that the translation platform 705 can perform longitudinal reciprocating motion relative to the base 701. Further preferably, a through slot penetrating both longitudinal end faces of the base 701 is provided on the top of the base 701, a guide rail 706 is provided on the top of the base 701 along the lateral interval (i.e., on both sides of the through slot), and a matching slider is provided at the bottom of the translation platform 705, so that the translation platform 705 can then slide relative to the base 701, and a screw module 707 is provided in the through slot to drive the translation platform 705 to move in the longitudinal direction, and then drive the transverse magnetization coil 702 and the detection probe 703 to move, so as to adapt to oil pipes of different lengths.

[0059] Furthermore, in the actual detection process, the height of the pipe 1 can be adjusted by adjusting the height of the positioning slot or the positioning plate, so that the pipe 1 is aligned with the detection probe 703 to complete the detection process. Further preferably, the servo motor used to drive the lifting mechanism 602 to operate is externally connected to an electrical control system to adjust the height of each positioning slot or positioning plate by controlling the operation of a servo motor.

[0060] In addition, a sensor is also provided on the detection device 7. When the sensor senses that a pipe 1 has fallen into the position to be detected (i.e., the transition line), the sensor determines its height and the distance from the detection probe 703, thereby adjusting the height of the pipe 1 and the longitudinal position of the transverse magnetization coil 702 and the detection probe 703 to perform subsequent detection work.

[0061] The pipe transmission device and the pipe end detection system containing the same in the utility model, wherein the pipe transmission device includes a transition frame and a transmission unit, the transmission unit realizes the position transfer of the pipe from the storage line to the transition line and from the transition line to the unloading line through a step structure that can be raised and lowered, and the transmission unit and the transition frame are multiple and arranged at intervals along the longitudinal direction, and multiple synchronization mechanisms are correspondingly arranged to realize the synchronous operation of the transmission unit and the transition frame. Furthermore, by arranging detection devices at both ends of the transition line, the transition line is used as a detection line, and the detection device includes a sensor, a transverse magnetization coil and a detection probe, and the position and length of the pipe are determined by the sensor, and the height of the pipe and the longitudinal position of the detection component are adjusted accordingly, so as to realize accurate detection of the pipe. The utility model can realize the automatic transportation of pipes and the automatic detection of pipe ends respectively through the transmission device and the detection device, and has the characteristics of high automation and high detection efficiency, improves the quality of flaw detection and production efficiency, and reduces the use cost, and has good promotion and application value.

[0062] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe transmission device, characterized in that: It includes a material storage line, a transition line and a material discharge line which are sequentially arranged in a transverse direction, wherein the transition line includes at least two transition racks and at least two transmission units which are arranged in a longitudinal direction in a spaced manner. The transmission unit includes a moving part and a flipping plate arranged on the moving part, one side of the flipping plate is a step structure, and the other side of the flipping plate is fixedly connected to the moving part so that the step structure rises or falls. The step structure comprises a first step surface and a second step surface, and the two step surfaces are inclined surfaces, and the inclined surfaces are inclined from one end close to the material storage line to the other end.

2. The pipe transmission device according to claim 1, wherein: The moving part comprises a base and a rotating shaft rotatably connected to the base, and a side edge of the flipping plate away from the step surface is fixedly connected to the rotating shaft to realize the flipping of the flipping plate.

3. The pipe transmission device according to claim 2, wherein: A rocker arm is provided at one end of the rotating shaft, one end of the rocker arm is fixedly connected to the end of the rotating shaft, and the other end of the rocker arm is rotatably connected to a connecting block. A first connecting rod is provided between two adjacent connecting blocks to realize synchronous rotation of each transmission unit.

4. The pipe transmission device according to claim 3, wherein: A driving mechanism is also provided corresponding to the transmission unit. The driving mechanism is provided at the end of the transition line. The driving mechanism is connected to a connecting block close to the end of the transition line and is used to drive the connecting block to perform longitudinal reciprocating motion.

5. The pipe transmission device according to any one of claims 1 to 4, wherein: The transition frame includes a bracket and a positioning groove arranged on the top of the bracket, which is used to carry the pipe fittings. The positioning groove is a "V"-shaped structure, and the bottom of the "V"-shaped structure is arranged opposite to the second step surface in the longitudinal direction.

6. The pipe transmission device according to claim 5, wherein: A lifting mechanism is provided between the positioning slot and the bracket to achieve lifting and lowering adjustment of the positioning slot.

7. The pipe transmission device according to claim 6, wherein: The lifting mechanism comprises a lifting rod and a driving part. The top end of the lifting rod is fixedly connected to the positioning groove. The driving part comprises a rack arranged on the lifting rod and a gear meshing with the rack.

8. The pipe transmission device according to claim 7, wherein: A second connecting rod is arranged between two adjacent lifting mechanisms, and two ends of the second connecting rod are respectively fixedly connected to the two gears to achieve synchronous movement of the two adjacent lifting mechanisms.

9. A pipe end detection system, characterized in that: It comprises a pipe transmission device as claimed in any one of claims 1 to 8 and two detection devices respectively arranged at the longitudinal ends of the transition line for detecting the ends of the pipes placed on the transition line. The detection device comprises a base, a transverse magnetization coil arranged on the base, and a detection probe inserted in the transverse magnetization coil.

10. The pipe end detection system according to claim 9, wherein: A translation platform is provided at the bottom of the transverse magnetization coil, and the translation platform is slidably connected to the base to drive the transverse magnetization coil and the detection probe to perform longitudinal reciprocating motion. and / or The tail of the detection probe is provided with a rotating seat to realize the rotation of the detection probe.

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