Suitable for steel pipe flaw detection devices of different diameters

Abstract

The present invention relates to a flaw detection device for steel pipes with different pipe diameters, comprising a material discharging mechanism, a material stabilizing mechanism, a flaw detection mechanism, and a sorting mechanism; the material discharging mechanism comprises a material discharging rack, a material feeding and conveying mechanism, a material diverting mechanism, a pipe positioning mechanism, and a material diverting and distance adjusting mechanism; the material diverting mechanism comprises a material diverting plate; the top edge of the material diverting plate is a material diverting surface, the material diverting surface is an inclined surface, and the top end of the material diverting surface extends out of a pipe positioning rod. The advantages of the present invention are as follows: the distance between the top end of the material diverting plate and the pipe positioning rod is controlled to ensure that the material diverting plate diverts materials one by one; the height of the pipe positioning rod is adjusted to adapt to the positioning and blocking of steel pipes with different pipe diameters; the relative position of the pipe positioning rod and the material diverting plate is adjusted to adapt to the diverting of steel pipes with different pipe diameters; the material passing plate not only buffers and slows down the falling steel pipes, but also plays a receiving role, preventing heavy steel pipes from directly falling onto the material picking plate, and the material receiving end of the material picking plate is not stable enough to receive the steel pipes due to being suspended in the air, resulting in the steel pipes falling from the material receiving end of the material picking plate.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe processing, in particular to a flaw detection device suitable for steel pipes with different pipe diameters. Background Art

[0002] After mass production, steel pipes require surface testing. This can be done with a flaw detector to examine the pipe wall. To ensure efficient and comprehensive inspection, each pipe is typically passed through a flaw detector, and the batches are sorted based on the flaw detection results.

[0003] However, the diameters and sizes of steel pipes vary from batch to batch on the production line, making existing pipe inspection systems less suitable for inspecting pipes with significantly different diameters. Loading the pipes requires transferring them one by one to a conveyor, but existing loading equipment is unable to handle these pipes of varying diameters. Furthermore, after inspection, the pipes are typically unloaded by sliding them onto a sorting rack. Due to the varying weights of the pipes' sizes, these heavy pipes are susceptible to surface damage from violent collisions. Summary of the Invention

[0004] The purpose of the present invention is to provide a steel pipe flaw detection device suitable for different pipe diameters, which can be used for flaw detection of steel pipes with different pipe diameters.

[0005] To achieve the above-mentioned purpose, a flaw detection device for steel pipes of different diameters is provided, comprising a discharge mechanism, a stabilizing mechanism, a flaw detection mechanism, and a sorting mechanism; the flaw detection mechanism is located between the discharge mechanism and the sorting mechanism, the stabilizing mechanism is provided in multiple portions, and the stabilizing mechanism is provided at both the feed end and the discharge end of the flaw detection mechanism;

[0006] The material discharging mechanism includes a material discharging rack, a material feeding and transmission mechanism, a material shifting mechanism, a pipe positioning mechanism, and a material shifting and distance adjusting mechanism;

[0007] The material placing rack includes a material preparation rod and a material feeding rod, and the material feeding rod is an inclined surface;

[0008] The feed transmission mechanism includes a feed transmission frame and a plurality of feed transmission rollers, and the plurality of feed transmission rollers are rotatably connected to the feed transmission frame in sequence;

[0009] The material diverting mechanism is located on the material feeding and conveying mechanism, and the material diverting mechanism includes a material diverting plate; a material hooking rod is provided at the top of the material diverting surface of the material diverting plate;

[0010] The material-digging mechanism further includes a material-digging rotating shaft, a material-digging rotating rod, a material-digging fixed rod, a material-digging rotating connecting piece, and a material-digging executing cylinder; the bottom of the material-digging plate is rotatably connected to the material-feeding transmission frame through the material-digging rotating shaft, and the material-digging rotating shaft is connected to the material-digging rotating rod; a second material-blocking rod is provided at the lowest end of the material-digging surface of the material-digging plate; the material-digging rotating rod is rotatably connected to the material-digging fixed rod through the material-digging rotating connecting piece, and the end of the material-digging fixed rod is rotatably connected to the piston rod of the material-digging executing cylinder;

[0011] The pipe positioning mechanism is located between the material placing rack and the material feeding and conveying mechanism, and includes a positioning component, a fastener, a pipe positioning rod, and a positioning connecting rod;

[0012] The top edge of the material-diverting plate is a material-diverting surface, which is an inclined surface, and the top end of the material-diverting surface extends out of the pipe positioning rod;

[0013] The top of the pipe positioning rod is provided with a fillet;

[0014] The positioning component is fixed on the positioning connecting rod, and the positioning component is vertically provided with a plurality of adjustment holes, and the fastener passes through the adjustment holes to detachably fix the pipe positioning rod on the positioning component;

[0015] The material-diverting and distance-adjusting mechanism includes a distance-adjusting actuator cylinder, the piston rod of which is connected to the positioning connecting rod;

[0016] The material-dipping and distance-adjusting mechanism also includes a limiting mechanism, which includes a connecting frame, a guide rail, and a slider; the guide rail is fixed in the connecting frame, and the end of the positioning connecting rod is connected to the guide rail through the slider; the horizontal position of the positioning connecting rod is adjusted by extending and retracting the piston rod of the distance-adjusting cylinder to adjust the distance from the top end of the material-dipping plate to the pipe positioning rod, thereby adapting to steel pipes of different diameters.

[0017] As a further improvement of the invention, the material stabilizing mechanism includes a support frame, a connecting seat, two material stabilizing actuators, two material guide rollers, a material guide frame, and a material transmission sensing device;

[0018] The bottom of the support frame is fixed on the material guide frame, and the two material guide rollers are connected to the material guide frame, and the two material guide rollers are respectively located on both sides of the support frame;

[0019] The support frame is provided with a fixing plate; the bottom edge of the connecting seat is fixed to the fixing plate; connecting arms are provided on both sides of the connecting seat, the connecting arms extend obliquely upward, and the connecting seat is dovetail-shaped;

[0020] The two material stabilizing actuators are respectively connected to the connecting seat through the connecting arm, and the material stabilizing actuator includes a material stabilizing actuator cylinder, a material pressing triangle connecting plate, and a pressure wheel; the cylinder body of the material stabilizing actuator cylinder is rotatably connected to the top of the connecting arm, and the piston rod of the material stabilizing actuator cylinder is rotatably connected to one end of the material pressing triangle connecting plate; the pressure wheel is connected to the end of the material pressing triangle connecting plate, and the other end of the material pressing triangle connecting plate is connected to the connecting arm;

[0021] The two guide rollers are respectively located directly below the corresponding pressing wheels;

[0022] The material transfer sensing device is located at the bottom edge of the connecting seat.

[0023] Furthermore, a lifting actuator is provided on the top of the support frame, and the lifting actuator is connected to the connecting seat.

[0024] Furthermore, the support frame is provided with a guide rod, the fixing plate is provided with a guide hole, and the guide rod passes through the guide hole.

[0025] Preferably, the pressure wheel is a rubber wheel.

[0026] As a further improvement of the invention, the sorting mechanism includes a discharging transmission mechanism, a defective product collection rack, a good product collection rack, a baffle, a picking plate, a picking plate rotation mechanism, and a discharging mechanism;

[0027] The discharging transmission mechanism includes a discharging transmission frame and a plurality of discharging transmission rollers, and the plurality of discharging transmission rollers are connected to the discharging transmission frame;

[0028] The discharging mechanism is located on the discharging transmission frame, and the discharging mechanism includes a discharging plate, a discharging rotating shaft, a discharging rotating rod, a discharging fixed rod, a discharging rotating connecting piece, and a discharging executing cylinder; the bottom edge of the discharging plate is connected to the discharging transmission frame through the discharging rotating shaft, the discharging rotating shaft is connected to the discharging rotating rod, the discharging rotating rod is rotatably connected to the discharging fixed rod through the discharging rotating connecting piece, and the discharging fixed rod is rotatably connected to the piston rod of the discharging executing cylinder; the top edge of the discharging plate is a lifting surface, and the lifting surface is an inclined surface, and the lowest end of the lifting surface extends out of the discharging transmission frame;

[0029] The defective product collection rack is provided with a defective product collection slot, the opening of which faces upward; the defective product collection slot is an arc-shaped slot;

[0030] The defective product collection rack is provided with a feeding plate on one side close to the discharging transmission mechanism, the feeding plate is inclined upward, and the end of the feeding plate close to the defective product collection trough is the lowest end;

[0031] The good product collection rack is provided with a good product collection slot, the opening of the good product collection slot is upward, and the good product collection slot is an arc-shaped slot;

[0032] The baffle is an inclined plate, one end of the good product collection rack is provided with an adjusting screw, and one end of the baffle is connected to the adjusting screw;

[0033] The picking plate is located above the defective product collecting trough, and the picking plate is U-shaped, with the opening of the U-shaped picking plate facing downward;

[0034] The picking plate rotation mechanism includes a picking plate connecting shaft and a sorting execution cylinder, the piston rod of the sorting execution cylinder is connected to the picking plate connecting shaft, the picking plate connecting shaft is connected between the defective product collection rack and the good product collection rack, and one end of the picking plate is fixed to the picking plate connecting shaft.

[0035] The flaw detection device of the present invention is suitable for steel pipes with different diameters. The steel pipes are fed one by one through a feeding mechanism. The material stabilizing mechanisms provided on both sides of the flaw detection mechanism ensure that the steel pipes can smoothly enter and exit the flaw detection mechanism, thereby preventing the steel pipes from jumping or tilting at one end and colliding with the flaw detection mechanism. The flaw detection steel pipes are transmitted to a sorting mechanism, and the steel pipes are sorted into a defective product collection rack or a good product collection rack according to the flaw detection results.

[0036] The present invention is applicable to the steel pipe flaw detection device of different pipe diameters and has the following advantages compared with the prior art:

[0037] (1) By controlling the distance between the top of the stripping plate and the pipe positioning rod, the stripping plate can be ensured to strip the pipes one by one;

[0038] (2) By adjusting the height of the pipe positioning rod, it can adapt to the positioning and blocking of steel pipes with different diameters; by adjusting the horizontal position of the pipe positioning rod, the relative position of the pipe positioning rod and the material shifting plate can be adjusted to adapt to the one-by-one shifting of steel pipes with different diameters;

[0039] (3) The steel pipe entering the flaw detection mechanism is stably transmitted through the material stabilizing mechanism to prevent the steel pipe from violently jumping or the end from tilting, which affects the smooth entry of the steel pipe into the flaw detection mechanism; the dovetail-shaped connecting seat increases the pressing range of the pressing wheel, further enhancing the material stabilizing effect;

[0040] (4) The setting of the feeding plate can not only buffer and slow down the falling steel pipes, but also play a receiving role to prevent the heavy steel pipes from falling directly onto the picking plate. The receiving end of the picking plate is suspended in the air and is not sufficient to stably receive the steel pipes, causing the steel pipes to fall from the receiving end of the picking plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The diagram is a structural diagram of a steel pipe flaw detection device suitable for different pipe diameters;

[0042] Figure 2 It is a structural diagram of the unloading mechanism;

[0043] Figure 3 It is the side view of the unloading mechanism;

[0044] Figure 4 Schematic diagram of the material shifting mechanism structure;

[0045] Figure 5 It is a structural diagram of the feed transmission mechanism;

[0046] Figure 6 Schematic diagram of the structure of the material diverter plate;

[0047] Figure 7 This is a schematic diagram of the connection of the material transfer plate;

[0048] Figure 8 This is a schematic diagram of the pipe positioning mechanism structure;

[0049] Figure 9 This is a structural diagram of the material shifting and spacing adjustment mechanism;

[0050] Figure 10 This is a structural diagram of the material shifting and spacing adjustment mechanism;

[0051] Figure 11 This is a schematic diagram of the material stabilization mechanism structure;

[0052] Figure 12 This is the front view of the material stabilizing mechanism;

[0053] Figure 13 Schematic diagram of the sorting mechanism structure;

[0054] Figure 14 Schematic diagram of the discharging transmission mechanism structure;

[0055] Figure 15 Schematic diagram of the discharging mechanism structure;

[0056] Figure 16 This is a schematic diagram of the discharge plate connection. DETAILED DESCRIPTION

[0057] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0058] like Figure 1 As shown, the flaw detection device for steel pipes of different diameters of the present invention includes a discharge mechanism 1, a stabilizing mechanism 2, a flaw detection mechanism 3, and a sorting mechanism 4. The flaw detection mechanism 3 is an existing device, which can be an ultrasonic flaw detector or an eddy current flaw detector. The flaw detection mechanism 3 is located between the discharge mechanism 1 and the sorting mechanism 4. There are multiple stabilizing mechanisms 2, and the stabilizing mechanisms 2 are provided at both the feeding end and the discharging end of the flaw detection mechanism 3.

[0059] like Figure 2 As shown, the material discharging mechanism 1 includes a material discharging rack 11, a material feeding and conveying mechanism 12, a material discharging mechanism 13, a pipe positioning mechanism 14, and a material discharging and distance adjusting mechanism 15;

[0060] like Figure 3 As shown, the unloading rack 11 includes a preparation rod 111 and a feed rod 112. The feed rod 112 has an inclined surface. A batch of steel pipes 5 are first placed on the preparation rod 111 to wait for feeding. The steel pipes 5 slide down the inclined surface of the feed rod 112 to the end of the feed rod 112 to wait for delivery. Preferably, a first material stopper 113 is provided at the end of the preparation rod 111 to prevent excessive accumulation of steel pipes on the preparation rod 111 and the possibility of falling from the preparation rod 111 and causing damage.

[0061] like Figure 4-5 As shown, the feed transmission mechanism 12 includes a feed transmission frame 121 and a plurality of feed transmission rollers 122, and the plurality of feed transmission rollers 122 are rotatably connected to the feed transmission frame 121 in sequence; the feed transmission rollers 122 can be rotatably connected by a combination of existing bearings and bearing seats, and the transmission rollers 122 are connected to the existing driving device (motor and reducer), so as to continuously rotate and achieve the feeding effect.

[0062] like Figure 6-7 As shown, the material digging mechanism 13 includes a material digging plate 131, a material digging rotating shaft 132, a material digging rotating rod 133, a material digging fixed rod 134, a material digging rotating connecting piece 135, and a material digging executing cylinder 136; the bottom of the material digging plate 131 is rotatably connected to the feed transmission frame 121 through the material digging rotating shaft 132, and the material digging rotating shaft 132 is connected to the material digging rotating rod 133; the top edge of the material digging plate 131 is the material digging surface, the material digging surface is an inclined surface, the top end of the material digging surface extends out of the feed transmission frame 121, and the lowest end of the material digging surface of the material digging plate 131 is provided with a second material blocking rod 1311; the material digging rotating rod 133 is rotatably connected to the material digging fixed rod 134 through the material digging rotating connecting piece 135, and the end of the material digging fixed rod 134 is rotatably connected to the piston rod of the material digging executing cylinder 136;

[0063] The material-digging fixed rod 134 moves forward as the piston rod of the material-digging execution cylinder 136 extends. Since the material-digging fixed rod 134 is rotationally connected to the piston rod of the material-digging execution cylinder 136, the material-digging rotating rod 133 rotationally connected thereto rotates, and the material-digging plate 131 rotates upward.

[0064] like Figure 8As shown, the pipe positioning mechanism 14 is located between the feed rod 112 and the feed transmission frame 121. The pipe positioning mechanism 14 includes a positioning component 141, a fastener 1412, a pipe positioning rod 142, and a positioning connecting rod 143. The pipe positioning rod 142 extends from the top of the material-diverting surface. The positioning component 141 is fixed to the positioning connecting rod 143. The positioning component 141 is vertically provided with a plurality of adjustment holes 1411. The fastener 1412 passes through the adjustment holes 1411 to detachably fix the pipe positioning rod 142 to the positioning component 141. The adjustment holes 1411 in different positions can be selected to adjust the height of the pipe positioning rod 142, thereby adapting to the blocking and positioning of steel pipes of different diameters. The top of the pipe positioning rod 142 is provided with a fillet 1421.

[0065] When the material stripping plate 131 rotates upward, the top of the material stripping surface is lifted, and the first steel pipe blocked by the pipe positioning rod 142 is picked up. The steel pipe slides through the pipe positioning rod 142 through the material transfer fillet 1421, and the steel pipe immediately leaves the feed rod 112 and slides along the inclined surface of the material stripping surface to the lowest point of the material stripping surface, and is intercepted by the second material blocking rod 1311. Subsequently, the piston rod of the material stripping execution cylinder 136 retracts, and the material stripping plate 131 rotates downward and returns to its initial state, and the steel pipe falls onto the feed transmission roller 122.

[0066] Preferably, a material hooking rod 1312 is provided at the top of the material diverting surface of the material diverting plate 131, and the material hooking rod 1312 can be inserted into the gap between the two steel pipes 5 to ensure that only one steel pipe 5 is diverted each time the material diverting plate 131 is lifted.

[0067] The material-diverting surface of the material-diverting plate 131 and the contact surface between the second material-blocking rod 1311 and the steel pipe are both provided with a protective layer. The protective layer can be made of rubber to prevent the surface of the steel pipe 5 from being scratched during sliding on the material-diverting surface, and from being scratched when the second material-blocking rod 1311 collides with the steel pipe.

[0068] In order to ensure single-piece feeding on a steel pipe flaw detection production line, the distance from the top of the material-diverting plate 131 to the pipe positioning rod 142 must be consistent with the diameter of the single steel pipe 5 .

[0069] like Figure 9-10 As shown, the material-dividing and distance-adjusting mechanism 15 includes a distance-adjusting actuator cylinder 151, and the piston rod of the distance-adjusting actuator cylinder 151 is connected to the positioning connecting rod 143; the horizontal position of the positioning connecting rod 143 is adjusted by extending and retracting the piston rod of the distance-adjusting actuator cylinder 151 to adjust the distance that the top end of the material-dividing plate 131 extends out from the pipe positioning rod 142, thereby adapting to steel pipes 5 of different diameters.

[0070] The feeding and spacing adjustment mechanism 15 further includes a limiting mechanism 152, which includes a connecting frame 1521, a guide rail 1522, and a slider 1523. The guide rail 1522 is fixed in the connecting frame 1521, and the end of the positioning connecting rod 143 is connected to the guide rail 1522 via the slider 1523. The positioning connecting rod 143 moves back and forth along the guide rail 1522 as the piston rod of the spacing adjustment actuator cylinder 151 is extended and retracted. The function of the limiting mechanism 152 is to guide and limit the movement of the positioning connecting rod 143, thereby preventing the positioning connecting rod 143 from being misaligned and affecting the positioning of the steel pipe 5.

[0071] The working principle of the discharge mechanism 1 is to place batches of steel pipes 5 on the preparation rod 111, and the steel pipes 5 slide down one by one along the inclined surface of the feed rod 112 until they are stopped by the pipe positioning rod 142; the material plate 131 rotates upward as the piston rod of the material discharging execution cylinder 136 extends, and the top of the material discharging surface of the material discharging plate 131 picks up the first steel pipe in front of the pipe positioning rod 142, and the first steel pipe slides out along the material transfer radius 1421 of the pipe positioning rod 142, and slides along the material discharging surface to the lowest end of the material discharging plate 131, and is stopped by the second material blocking rod 1311, that is, enters the transmission station; at the same time, the material discharging plate 131 is retracted and reset as the piston rod of the material discharging execution cylinder 136 retracts, and the steel pipe falls onto the feed transmission roller 122 and is transmitted by the feed transmission roller 122.

[0072] like Figure 11-12 As shown, the material stabilizing mechanism 2 includes a support frame 21, a connecting seat 22, two material stabilizing actuators 23, two material guide rollers 24, a material guide frame 25, and a material transmission sensing device 26;

[0073] The bottom of the support frame 21 is fixed on the guide frame 25, and two guide rollers 24 are connected to the guide frame 25. The two guide rollers 24 are respectively located on both sides of the support frame 21; the guide rollers 24 are connected to the existing drive device (motor and reducer) so as to rotate continuously to achieve the feeding effect.

[0074] The support frame 21 is provided with a fixing plate 211; the bottom edge of the connecting seat 22 is fixed on the fixing plate 211; connecting arms 221 are provided on both sides of the connecting seat 22, and the connecting arms 221 extend obliquely upward, and the connecting seat 22 is dovetail-shaped;

[0075] The two material stabilizing actuators 23 are respectively connected to the connecting base 22 through the connecting arms 221. The material stabilizing actuator 23 includes a material stabilizing actuator cylinder 231, a material pressing triangle connecting plate 232, and a pressing wheel 233. The cylinder body of the material stabilizing actuator cylinder 231 is rotatably connected to the top of the connecting arm 221, and the piston rod of the material stabilizing actuator cylinder 231 is rotatably connected to one end of the material pressing triangle connecting plate 232. The pressing wheel 233 is connected to the end of the material pressing triangle connecting plate 232, and the other end of the material pressing triangle connecting plate 232 is connected to the connecting arm 221.

[0076] The two guide rollers 24 are respectively located directly below the corresponding pressing wheels 233;

[0077] Compared to conventional cylindrical connectors, the dovetail-shaped connector 22 has a larger distance between the material stabilization actuator cylinder 231 connected to it and the support frame 21, and the distance between the two material stabilization actuators 23 is also larger. Accordingly, the two pressure rollers 233 can press a larger range of steel pipe lengths, which has a stronger stabilizing effect on the transmission of the steel pipe 5. Especially when transporting long steel pipes, with a conventional cylindrical connector 22, the pressure rollers 233 connected on both sides have a relatively limited material pressing range, and the ends of the steel pipes will still jump during transportation, preventing the steel pipes from quickly entering the flaw detection mechanism 3, and even causing collisions and severe friction with the feed port of the flaw detection mechanism 3. The dovetail-shaped connector 22, however, increases the pressure range of the pressure rollers 233 on both sides, enhancing the material feeding stabilization effect.

[0078] The material feed sensing device 26 is located at the bottom edge of the connecting base 22. The material feed sensing device 26 is an existing photoelectric sensor. When the steel pipe passes between the material feed sensing device 26 and the fixed plate 211, the material feed sensing device 26 receives a signal, converts the optical signal into an electrical signal, and transmits it to the terminal electrical control box. The air valve connected to the material stabilization execution cylinder 231 is instructed to take in air, causing the piston rod of the material stabilization execution cylinder 231 to extend. When the end of the steel pipe leaves the top of the material feed sensing device 26, the material feed sensing device 26 senses the optical signal. Similarly, the air valve connected to the material stabilization execution cylinder 231 is instructed to deflate air, causing the piston rod of the material stabilization execution cylinder 231 to return to its original position.

[0079] The piston rod of the material stabilizing execution cylinder 231 extends out, pushing the pressing triangular connecting plate 232 to rotate downward, and the pressing wheel 233 is pressed down accordingly. The triangular structure of the pressing triangular connecting plate 232, compared with the ordinary rectangular structure, can rotate up and down more smoothly when subjected to the thrust and pull of the material stabilizing execution cylinder 231, making the pressing of the pressing wheel 233 more stable, and playing a buffering role on the vibration of the pressing wheel 233 caused by the vibration of the steel pipe, reducing damage to the cylinder or other equipment.

[0080] The steel pipe 5 to be inspected is transported by the guide roller 24 and is pressed between the pressing wheel 233 and the guide roller 24. Preferably, the pressing wheel 233 is a rubber wheel. Compared with metal wheels, the rubber wheel is softer and has a certain elasticity. It has a certain buffering ability against the vibration of the steel pipe and also reduces the damage caused by friction with the outer wall of the steel pipe to a certain extent.

[0081] The air intake and exhaust of the stabilizing cylinder 231 can be adjusted to accommodate steel pipes of varying diameters, changing the downward pressure distance of the pressing wheel 233. This, in turn, adjusts the distance between the pressing wheel 233 and the guide roller 24 during pressing to accommodate the pressing of steel pipes of varying diameters. If the diameters of the steel pipes vary significantly, the overall height of the stabilizing actuator 23 can be adjusted.

[0082] A lifting actuator 27 is provided at the top of the support frame 21, and the lifting actuator 27 is connected to the connecting seat 22. The lifting actuator can be an existing turbine screw lifting device, and the height of the connecting seat 22 can be adjusted manually or by a cylinder. When the diameter of the steel pipe and the distance between the pressure wheel 233 and the guide roller 24 differ greatly, the pressure wheel 233 is first adjusted to an appropriate height by the lifting actuator 27, and then the pressure wheel 233 is accurately and quickly pressed down by the material stabilization cylinder 231. The stroke distance of the material stabilization cylinder 231 is reduced, so that the piston rod of the material stabilization cylinder 231 can be extended and retracted within a small range, reducing the descending time of the pressure wheel 233, ensuring that when the material transmission sensing device 26 senses the transmission of the steel pipe, the pressure wheel 233 descends to the designated position in the shortest time to press the material, ensuring the stable transmission of the steel pipe before flaw detection, and avoiding the steel pipe from jumping and affecting the docking position of the steel pipe and the flaw detection mechanism 3.

[0083] The support frame 21 is provided with a guide rod 212, and the fixing plate 211 is provided with a guide hole 213, through which the guide rod 212 passes. The fixing plate 211 is raised and lowered along the guide rod 212 along with the connecting base 22. The guide rod 212 guides the fixing plate 211, preventing the connecting base 22 from shifting during the raising and lowering process, which would cause the pressing wheel 233 to be unable to connect with the guide roller 24, thereby affecting the pressing effect.

[0084] The working principle of the material stabilization mechanism 2 is that when a steel pipe is transported from the material guide roller 24, the material transmission sensor 26 senses that a steel pipe 5 is being transported from above. The material stabilization actuator cylinder 231 extends its piston rod, lowering the pressure roller 233. The steel pipes 5 located on both sides of the connecting seat 22 are confined between the pressure roller 233 and the material guide roller 24 for transmission, preventing the steel pipes 5 from jumping during transmission and failing to accurately connect with the subsequent flaw detection mechanism 3. The upper surface of the steel pipe 5 rubs against the pressure roller 233, and the lower surface of the steel pipe 5 rubs against the material guide roller 24, which can slow down the transmission of the steel pipe 5 and prevent the steel pipe from being transported too quickly and failing to enter the flaw detection mechanism 3 smoothly. When the end of the steel pipe 5 leaves the upper part of the material transmission sensor 26, the material transmission sensor 26 senses a light signal, and the material stabilization actuator cylinder 231 retracts its piston rod, waiting for the next steel pipe to be transported.

[0085] like Figure 13 As shown, the sorting mechanism 4 includes a discharging transmission mechanism 41, a defective product collection rack 42, a good product collection rack 43, a baffle 44, a picking plate 45, a picking plate rotation mechanism 46, and a discharging mechanism 47;

[0086] like Figure 14As shown, the discharging transmission mechanism 41 includes a discharging transmission frame 412 and a plurality of discharging transmission rollers 411, and the plurality of discharging transmission rollers 411 are connected to the discharging transmission frame 412; the discharging transmission rollers 411 are connected to the existing driving device (motor and reducer), so as to rotate continuously to achieve the feeding effect.

[0087] The discharging mechanism 47 is located on the discharging transmission frame 412. Figure 15-16 As shown, the discharging mechanism 47 includes a discharging plate 471, a discharging rotating shaft 472, a discharging rotating rod 473, a discharging fixed rod 474, a discharging rotating connecting piece 475, and a discharging executing cylinder 476; the bottom edge of the discharging plate 471 is connected to the discharging transmission frame 412 through the discharging rotating shaft 472, the discharging rotating shaft 472 is connected to the discharging rotating rod 473, the discharging rotating rod 473 is rotatably connected to the discharging fixed rod 474 through the discharging rotating connecting piece 475, and the discharging fixed rod 474 is rotatably connected to the piston rod of the discharging executing cylinder 476; the top edge of the discharging plate 471 is a lifting surface, the lifting surface is an inclined surface, and the lowest end of the lifting surface extends out of the discharging transmission frame 412;

[0088] The rotation of the discharge plate 471 connected to it is controlled by extending and retracting the piston rod of the discharge execution cylinder 476. The detection by the flaw detection mechanism 3 is transmitted from the stabilizing mechanism 2 to the discharge mechanism 47. The initial state of the discharge plate 471 is horizontal and is transmitted by the discharge transmission roller 411. A sensor can be provided on the discharge transmission frame 412. When the steel pipe is transmitted to the target position, the discharge plate 471 rotates upward, and the steel pipe 5 is lifted by the discharge plate 471. The steel pipe 5 leaves the discharge transmission roller 411 and slides along the lifting surface.

[0089] The defective product collection rack 42 and the qualified product collection rack 43 are used to collect defective steel pipes and qualified steel pipes detected by flaw detection, respectively. The defective product collection rack 42 is located between the qualified product collection rack 43 and the discharge transmission mechanism 41;

[0090] The defective product collection rack 42 is provided with a defective product collection trough 421, and the opening of the defective product collection trough 421 faces upward; the defective product collection trough 421 is an arc-shaped trough; the defective product collection trough 421 with an arc-shaped trough structure has the advantage of being compared with the traditional rectangular collection frame in that when the steel pipe falls from below at high speed, the steel pipe rolls along the inner wall of the arc-shaped trough, which plays a role of buffering and reducing speed, avoiding direct and violent collision between the steel pipe and the inner wall of the collection trough below or other steel pipes, thereby reducing the degree of collision to a certain extent.

[0091] A feed plate 422 is provided on one side of the defective product collection rack 42, near the discharge transmission mechanism 41. The feed plate 422 is inclined upward, with the end of the feed plate 422 near the defective product collection trough 421 being the lowest end. The steel pipes on the discharge plate 471 first fall onto the feed plate 422, which acts as a buffer and transition for the steel pipes to be discharged, slowing down the falling steel pipes and preventing them from falling too quickly and being damaged. The surface of the feed plate 422 is covered with a rubber pad. Compared to metal materials, the rubber pad is durable and softer in texture. It not only protects the outer surface of the steel pipe, but also increases friction with the steel pipe, further enhancing the acceleration effect of the steel pipe's sliding.

[0092] The good product collection rack 43 is provided with a good product collection groove 431, the opening of the good product collection groove 431 faces upward, and the good product collection groove 431 is an arc-shaped groove, which has the same function as the arc-shaped groove of the defective product collection groove 421, reducing the degree of collision between the steel pipe and the inner wall of the good product collection groove 431 when it falls.

[0093] The baffle 44 is an inclined plate, and an adjusting screw 441 is provided at one end of the good product collection rack 43, and one end of the baffle 44 is connected to the adjusting screw 441; the distance between the baffle 44 and the good product collection tank 431 is adjusted by adjusting the screw 441, so as to adjust the number of steel pipes collected by the good product collection rack 43 according to the diameter of the steel pipe: if the diameter of the steel pipe 5 is large, the distance between the baffle 44 and the good product collection tank 431 is increased to ensure the number of bundled steel pipes hoisted at a single time, and avoid the situation where the diameter of the steel pipe 5 is too large, resulting in too few steel pipes that can be collected in the good product collection tank 431, and the number of hoisted steel pipes is small, resulting in more hoisting and packaging times after the production line steel pipe is inspected, affecting efficiency; if the diameter of the steel pipe 5 is small, the distance between the baffle 44 and the good product collection tank 431 is reduced to avoid too much space for the steel pipe to fall, and the steel pipe rolls back and forth, resulting in several steel pipes being scattered, affecting hoisting efficiency.

[0094] Preferably, the inner wall surfaces of the defective product collecting tank 421 and the good product collecting tank 431 , as well as the surface of the baffle 44 are covered with aggregate rubber pads, which play a protective role and reduce damage to the outer surface of the steel pipe 5 .

[0095] The baffle 44 is connected to a movable frame 442, which has a movable groove 4421. The movable frame 442 is connected to the good product collection rack 43 through the movable groove 4421. The baffle 44 moves back and forth along the bottom edge of the good product collection rack 43 through the movable groove 4421. The movable groove 4421 acts as a limit and guide to ensure that the rest position of the baffle 44 does not deviate.

[0096] The picking plate 45 is located above the defective product collecting trough 421. The picking plate 45 is U-shaped, with the opening of the U-shaped picking plate 45 facing downward.

[0097] The picking plate rotation mechanism 46 includes a picking plate connecting shaft 461 and a sorting execution cylinder 462. The piston rod of the sorting execution cylinder 462 is connected to the picking plate connecting shaft 461. The picking plate connecting shaft 461 is connected between the defective product collection rack 42 and the good product collection rack 43. One end of the picking plate 45 is fixed to the picking plate connecting shaft 461. The rotation of the picking plate connecting shaft 461 is controlled by the extension and contraction of the piston rod of the sorting execution cylinder 462, and the picking plate 45 rotates accordingly with the fixed point with the picking plate connecting shaft 461 as the fulcrum. The initial state of the picking plate 45 is an inclined state. The inclination angle of the picking plate 45 can be adjusted by the extension stroke of the piston rod of the sorting execution cylinder 462 to adapt to steel pipes of different diameters, so that the weight of the steel pipe is adapted to the sliding speed, and to prevent heavier steel pipes from falling too fast and being hit when falling.

[0098] Compared with conventional metal plates, the "U"-shaped picking plate 45 reduces its own gravity while ensuring its supporting strength. The thrust and pull provided by the sorting execution cylinder 462 are reduced accordingly, and the rotation of the "U"-shaped picking plate 45 is more flexible; and only one end of the picking plate 45 is fixed, and the other end is suspended in the air, to prevent it from sagging due to excessive weight after long-term use, and being unable to maintain an inclined state, affecting the transmission of steel pipes.

[0099] The upper surface of the picking plate 45 is covered with a picking rubber layer, which reduces the wear of the steel pipe when it slides and increases the friction with the steel pipe to a certain extent, thereby achieving a deceleration effect.

[0100] The working principle of the sorting mechanism 4 is that the steel pipe 5 output from the flaw detection mechanism 3 first enters the discharging transmission mechanism 41 and is transmitted by the discharging transmission roller 411. Subsequently, the discharging plate 471 rotates upward from a horizontal state under the action of the discharging execution cylinder 476, and the discharging plate 471 is lifted to lift the steel pipe 5. The steel pipe 5 leaves the discharging transmission roller 411 and slides downward along the lifting surface of the discharging plate 471, and finally leaves the discharging transmission mechanism 41; according to the inspection result of the previous flaw detection mechanism 3, the steel pipe 5 is judged to be a good product or a defective product: if it is a good product, the terminal electric control box issues a command, and the picking plate 45 keeps In the initial tilted state, the steel pipe 5 first falls from the discharge plate 471 to the feed plate 422 for buffering and deceleration, and then slides onto the picking plate 45, and slides along the tilted picking plate 45, and finally falls into the good product collection rack 43; if it is a defective product, the terminal electrical control box sends an instruction, and the picking plate 45 rotates under the action of the sorting execution cylinder 462, and the defective product collection slot 421 is opened. The steel pipe 5 that falls onto the feed plate 422 has no picking plate 45 to receive it, and falls directly into the defective product collection rack 42. Finally, the picking plate 45 is reset under the action of the sorting execution cylinder 462, waiting for the sorting of the next steel pipe.

[0101] The present invention is suitable for a flaw detection device for steel pipes of different diameters. The steel pipes 5 are fed one by one by a feeding mechanism 1. The stabilizing mechanisms 2 provided on both sides of the flaw detection mechanism 3 ensure that the steel pipes 5 can smoothly enter and exit the flaw detection mechanism 3, thereby preventing the steel pipes from bouncing or tilting at one end and colliding with the flaw detection mechanism 3. The flaw detection steel pipes 5 are transferred to a sorting mechanism 4. The steel pipes 5 are sorted into a defective product collection rack 42 or a good product collection rack 43 according to the flaw detection results.

[0102] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without departing from the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Applicable to steel pipe flaw detection device with different diameters, characterized by: It includes a material discharge mechanism, a material stabilizing mechanism, a flaw detection mechanism, and a sorting mechanism; the flaw detection mechanism is located between the material discharge mechanism and the sorting mechanism, there are several material stabilizing mechanisms, and the material stabilizing mechanism is provided at both the feeding end and the discharging end of the flaw detection mechanism; The material discharging mechanism includes a material discharging rack, a material feeding and transmission mechanism, a material shifting mechanism, a pipe positioning mechanism, and a material shifting and distance adjusting mechanism; The material placing rack includes a material preparation rod and a material feeding rod, and the material feeding rod is an inclined surface; The feed transmission mechanism includes a feed transmission frame and a plurality of feed transmission rollers, and the plurality of feed transmission rollers are rotatably connected to the feed transmission frame in sequence; The material diverting mechanism is located on the material feeding and conveying mechanism, and the material diverting mechanism includes a material diverting plate; a material hooking rod is provided at the top of the material diverting surface of the material diverting plate; The material-digging mechanism further includes a material-digging rotating shaft, a material-digging rotating rod, a material-digging fixed rod, a material-digging rotating connecting piece, and a material-digging executing cylinder; the bottom of the material-digging plate is rotatably connected to the material-feeding transmission frame through the material-digging rotating shaft, and the material-digging rotating shaft is connected to the material-digging rotating rod; a second material-blocking rod is provided at the lowest end of the material-digging surface of the material-digging plate; the material-digging rotating rod is rotatably connected to the material-digging fixed rod through the material-digging rotating connecting piece, and the end of the material-digging fixed rod is rotatably connected to the piston rod of the material-digging executing cylinder; The pipe positioning mechanism is located between the material placing rack and the material feeding and conveying mechanism, and includes a positioning component, a fastener, a pipe positioning rod, and a positioning connecting rod; The top edge of the material-diverting plate is a material-diverting surface, which is an inclined surface, and the top end of the material-diverting surface extends out of the pipe positioning rod; The top of the pipe positioning rod is provided with a fillet; The positioning component is fixed on the positioning connecting rod, and the positioning component is vertically provided with a plurality of adjustment holes, and the fastener passes through the adjustment holes to detachably fix the pipe positioning rod on the positioning component; The material-diverting and distance-adjusting mechanism includes a distance-adjusting actuator cylinder, the piston rod of which is connected to the positioning connecting rod; The material-dipping and distance-adjusting mechanism also includes a limiting mechanism, which includes a connecting frame, a guide rail, and a slider; the guide rail is fixed in the connecting frame, and the end of the positioning connecting rod is connected to the guide rail through the slider; the horizontal position of the positioning connecting rod is adjusted by extending and retracting the piston rod of the distance-adjusting cylinder to adjust the distance from the top end of the material-dipping plate to the pipe positioning rod, thereby adapting to steel pipes of different diameters.

2. The flaw detection device for steel pipes of different diameters according to claim 1, characterized in that: The material stabilizing mechanism includes a support frame, a connecting seat, two material stabilizing actuators, two material guide rollers, a material guide frame, and a material transmission sensing device; The bottom of the support frame is fixed on the material guide frame, and the two material guide rollers are connected to the material guide frame, and the two material guide rollers are respectively located on both sides of the support frame; The support frame is provided with a fixing plate; the bottom edge of the connecting seat is fixed to the fixing plate; connecting arms are provided on both sides of the connecting seat, the connecting arms extend obliquely upward, and the connecting seat is dovetail-shaped; The two material stabilizing actuators are respectively connected to the connecting seat through the connecting arm, and the material stabilizing actuator includes a material stabilizing actuator cylinder, a material pressing triangle connecting plate, and a pressure wheel; the cylinder body of the material stabilizing actuator cylinder is rotatably connected to the top of the connecting arm, and the piston rod of the material stabilizing actuator cylinder is rotatably connected to one end of the material pressing triangle connecting plate; the pressure wheel is connected to the end of the material pressing triangle connecting plate, and the other end of the material pressing triangle connecting plate is connected to the connecting arm; The two guide rollers are respectively located directly below the corresponding pressing wheels; The material transfer sensing device is located at the bottom edge of the connecting seat.

3. The flaw detection device for steel pipes of different diameters as claimed in claim 2, characterized in that: A lifting actuator is provided on the top of the support frame, and the lifting actuator is connected to the connecting seat.

4. The flaw detection device for steel pipes of different diameters as claimed in claim 3, characterized in that: The support frame is provided with a guide rod, the fixing plate is provided with a guide hole, and the guide rod passes through the guide hole.

5. The flaw detection device for steel pipes of different diameters as claimed in claim 2, characterized in that: The pressing wheel is a rubber wheel.

6. The flaw detection device for steel pipes of different diameters as claimed in claim 1, characterized in that: The sorting mechanism includes a discharging transmission mechanism, a defective product collection rack, a good product collection rack, a baffle, a picking plate, a picking plate rotation mechanism, and a discharging mechanism; The discharging transmission mechanism includes a discharging transmission frame and a plurality of discharging transmission rollers, and the plurality of discharging transmission rollers are connected to the discharging transmission frame; The discharging mechanism is located on the discharging transmission frame, and the discharging mechanism includes a discharging plate, a discharging rotating shaft, a discharging rotating rod, a discharging fixed rod, a discharging rotating connecting piece, and a discharging executing cylinder; the bottom edge of the discharging plate is connected to the discharging transmission frame through the discharging rotating shaft, the discharging rotating shaft is connected to the discharging rotating rod, the discharging rotating rod is rotatably connected to the discharging fixed rod through the discharging rotating connecting piece, and the discharging fixed rod is rotatably connected to the piston rod of the discharging executing cylinder; the top edge of the discharging plate is a lifting surface, and the lifting surface is an inclined surface, and the lowest end of the lifting surface extends out of the discharging transmission frame; The defective product collection rack is provided with a defective product collection slot, the opening of which faces upward; the defective product collection slot is an arc-shaped slot; The defective product collection rack is provided with a feeding plate on one side close to the discharging transmission mechanism, the feeding plate is inclined upward, and the end of the feeding plate close to the defective product collection trough is the lowest end; The good product collection rack is provided with a good product collection slot, the opening of the good product collection slot is upward, and the good product collection slot is an arc-shaped slot; The baffle is an inclined plate, one end of the good product collection rack is provided with an adjusting screw, and one end of the baffle is connected to the adjusting screw; The picking plate is located above the defective product collecting trough, and the picking plate is U-shaped, with the opening of the U-shaped picking plate facing downward; The picking plate rotation mechanism includes a picking plate connecting shaft and a sorting execution cylinder, the piston rod of the sorting execution cylinder is connected to the picking plate connecting shaft, the picking plate connecting shaft is connected between the defective product collection rack and the good product collection rack, and one end of the picking plate is fixed to the picking plate connecting shaft.

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