Stepped steel pipe feeding device capable of separating and centering single steel pipe and working method

Abstract

The invention discloses a stepped steel pipe feeding device capable of separating and centering a single steel pipe and a working method. The T-shaped base frame is horizontally arranged, the horizontal section of the T-shaped base frame is in a T shape, the T-shaped base frame is composed of a vertical part and a transverse part which are perpendicular to each other, and each side of the vertical part is sequentially provided with a material guiding mechanism, a first lifting mechanism, a sheet aligning and placing mechanism and a second lifting mechanism at intervals from the bottom of the vertical part to the intersection of the vertical part and the transverse part. A turning mechanism is fixedly mounted at the junction of the vertical part and the transverse part, and aligning moving mechanisms are symmetrically and fixedly mounted on the two sides, extending outwards, of the transverse part respectively; the centering action process of the steel pipe is completed through the aligning swing piece / moving mechanism, and the steel pipe is turned to the next station through the turning mechanism. The steel pipe feeding device can adapt to feeding of steel pipes with different lengths and pipe diameters, single steel pipe separation is achieved, meanwhile, axial movement centering work of the steel pipes is completed, and orderliness and stability of a production line are improved.

Description

Technical Field

[0001] This invention relates to a steel pipe feeding device in the field of steel pipe processing, specifically to a stepped steel pipe feeding device and its working method that allows for single-pipe separation and alignment. Background Technology

[0002] Currently, steel pipes are widely used, typically as pipelines for transporting fluids such as oil, natural gas, and coal gas. During the production and processing, steel pipes need to undergo a pickling process to remove surface oxides and other impurities, improving their surface quality and corrosion resistance.

[0003] Typically, after pickling, steel pipes retain black acid slag, dirt, and residual oxides on their surface. To remove these residues, researchers have developed automated steel pipe cleaning lines. However, existing automated steel pipe cleaning lines have several significant problems with their feeding devices: 1. After pickling, bundles of steel pipes are placed on the loading rack. The stacking of the steel pipes causes them to jam, preventing them from rolling down the ramp of the loading rack to the next station by their own weight. In some cases, the stacking problem even causes multiple steel pipes to be flipped to the next station, requiring manual intervention, which leads to production line stagnation and a serious decrease in production efficiency.

[0004] 2. After pickling, bundles of steel pipes are lifted from the pickling tank onto the loading rack. The ends of the steel pipes are uneven, making it impossible to align them and place them at the designated workstations. This also makes it difficult to measure the length of the steel pipes, which can lead to collisions between the steel pipes and certain structures on the production line, damaging the automated production line and the surface of the steel pipes, and affecting the normal operation of the cleaning line. Summary of the Invention

[0005] To address the problems existing in the background art, the present invention provides a stepped steel pipe feeding device and working method that can be individually separated and aligned.

[0006] The technical solution adopted in this invention is: 1. A stepped steel pipe feeding device capable of single-pipe separation and alignment It includes a T-shaped base frame, a material guiding mechanism, a first lifting mechanism, a second lifting mechanism, an alignment and swaying mechanism, an alignment and moving mechanism, and a material flipping mechanism; The T-shaped base frame is arranged horizontally and has a T-shaped horizontal cross-section. The T-shape is composed of two mutually perpendicular vertical parts and a horizontal part. On each side of the vertical part of the T-shaped base frame, a material guiding mechanism, a first lifting mechanism, an alignment and swaying mechanism, and a second lifting mechanism are symmetrically fixed. On each side, along the free end of the vertical part of the T-shaped base frame towards the intersection of the vertical and horizontal parts, the material guiding mechanism, the first lifting mechanism, the alignment and swaying mechanism, and the second lifting mechanism are installed at intervals. A material turning mechanism is fixedly installed at the intersection of the vertical and horizontal parts. On each side of the outward extension of the horizontal part, an alignment and moving mechanism is symmetrically fixed.

[0007] The T-shaped base frame is divided into two layers in the vertical direction. The upper layer of the vertical part is a vertical beam, and a support plate is symmetrically fixed on both sides of the vertical beam for installing the corresponding alignment swing plate mechanism. The upper layer of the horizontal part is a horizontal beam, and the two sides of the horizontal beam extending outward are both alignment base frames and are arranged symmetrically. The lower layer of the vertical part is equipped with a base for installing the first lifting mechanism and the second lifting mechanism. The lower and upper layers of the vertical part and the lower and upper layers of the horizontal part are fixedly connected by support columns. The vertical section of the vertical beam is divided into a lifting area, a ramp area, and a stacking area from the intersection of the vertical beam and the horizontal beam towards the free end of the vertical beam. The ramp area is a ramp structure inclined relative to the horizontal plane. The top of the ramp area is connected to the stacking area parallel to the horizontal plane. The stacking area is used to place steel pipes. A material guiding mechanism is symmetrically fixedly installed on each side of the stacking area. The bottom of the ramp area is connected to a two-stage stepped lifting area. Both steps of the lifting area are inclined relative to the horizontal plane, so that the steel pipes on the steps roll towards the intersection of the vertical beam and the horizontal beam. A first lifting mechanism is symmetrically fixedly installed on each side of the connection between the ramp area and the lifting area. A first lifting mechanism is symmetrically fixedly installed on each side of the intersection of the first-stage and second-stage steps of the lifting area. An alignment swing plate mechanism is symmetrically fixedly installed on each side of the first-stage step of the lifting area. One end of the secondary step in the lifting zone is used to connect to the primary step, and the other end is symmetrically fixed with a material turning mechanism about the center; the crossbeam is higher than the primary step in the lifting zone.

[0008] The material guiding mechanism includes a material guiding plate, a material guiding hydraulic cylinder, and a material guiding hydraulic cylinder support; One end of the guide plate is movably mounted on the side of the stockpiling area via a second guide shaft, causing the guide plate to swing around the second guide shaft. The other end of the guide plate is fixedly connected to the guide piston rod of the guide hydraulic cylinder via a first guide shaft. The guide hydraulic cylinder is fixed on a horizontal surface via a guide hydraulic cylinder support. The end of the guide plate connected to the stockpiling area is close to the connection between the stockpiling area and the ramp area, causing the guide hydraulic cylinder to drive the guide piston rod to extend and lift the other end of the guide plate. The guide plate swings, thereby pushing the steel pipe arranged in the stockpiling area into the ramp area.

[0009] The first lifting mechanism includes a first hydraulic lifting cylinder and a lifting separation plate; The second lifting mechanism includes a second hydraulic lifting cylinder and a lifting separation plate; The base at one end of the first hydraulic lifting cylinder is fixedly connected to the bottom base of the T-shaped base frame, and the piston rod at the other end of the first hydraulic lifting cylinder is fixedly connected to the lifting separation plate, so that the piston rod pushes out / retracts to drive the lifting separation plate to rise / fall. The base at one end of the second hydraulic lifting cylinder is fixedly connected to the bottom base of the T-shaped base frame, and the piston rod at the other end of the second hydraulic lifting cylinder is fixedly connected to the lifting separation plate, so that the piston rod pushes out / retracts to drive the lifting separation plate to rise / fall. The lifting separation plate is designed to fit a single steel pipe, allowing the lifting separation plate to lift and support the single steel pipe. The symmetrically arranged first and second lifting mechanisms enable each of their respective lifting separation plates to lift a single steel pipe from both sides.

[0010] The alignment and swaying mechanism includes an alignment sway, a sway mounting shaft, a sway hydraulic cylinder, a roller support, a roller, and a pressure block; The upper end of the alignment plate is provided with two platforms, which are arranged in a V-shape. A roller support is fixedly installed on each platform. A roller is installed on the upper end of each roller support through a pressure block. One side of each roller is in contact with the roller support, and the other side of each roller is used to support a single steel pipe of the first step in the lifting area. The lower end of the aligning swing plate is provided with a first shaft hole for connecting with the swing plate piston rod at one end of the swing plate hydraulic cylinder. The other end of the swing plate hydraulic cylinder is connected to the swing plate hydraulic cylinder support. The lower end face of the support plate of the T-shaped base frame of the swing plate hydraulic cylinder support is fixedly connected. The center of the alignment pendulum is provided with a first through hole for mounting the pendulum pivot shaft. The alignment pendulum of the alignment pendulum mechanism is movably connected around the pendulum pivot shaft, so that the alignment pendulum swings around the pendulum pivot shaft. The swing plate piston rod of the swing plate hydraulic cylinder extends / retracts, causing the aligned swing plate to swing, which in turn causes the roller to rise / fall.

[0011] The alignment and movement mechanism includes an anti-collision component, an alignment and movement trolley, a chain, a sprocket, a sprocket bearing housing, a sprocket shaft, a motor, and a coupling reducer; The two sprockets are arranged in parallel and the chain is wound around the two sprockets to form a chain drive structure, and the chain is parallel to the crossbeam and arranged in the alignment base frame; One sprocket is connected to the alignment base frame via a hole-shaft fit, and the other sprocket is connected to the sprocket shaft. One end of the sprocket shaft is connected to the alignment base frame via a sprocket bearing seat, and the other end is connected to the motor via a coupling reducer to transmit the motor's power. The alignment moving trolley is fixedly installed on the chain, so that the chain drives the alignment moving trolley to move along the chain arrangement direction. A proximity switch frame, anti-collision components and proximity sensors are fixedly installed on one side of the alignment base frame.

[0012] The alignment moving trolley includes a chain fixing plate, a T-shaped plate, a moving plate, rollers, a buffer block, a sensing frame, and a return spring; The chain fixing plate has a second through hole in the middle for fixing and connecting with the chain. A T-shaped plate is symmetrically arranged on each side of the chain fixing plate to form a cross structure. The alignment base frame includes four parallel and spaced square tubes. The cross structure formed by the chain fixing plate and the two T-shaped plates is embedded in the gaps of the four square tubes so that a square tube is fitted at each of the four corners of the cross structure. The portions of the two T-shaped plates located between the corresponding two square tubes have multiple spaced wheel grooves. Each wheel groove is equipped with a roller parallel to the chain fixing plate. The upper and lower ends of the rollers are used to fit the corresponding two square tubes so that the rollers roll between the corresponding two square tubes. A movable plate is fixedly installed on the upper end of the chain fixing plate. A fixed cover plate is provided above the movable plate. The fixed cover plate covers the push plate, allowing the movable plate to slide within the cover plate in a direction parallel to the crossbeam. One end of the push plate is used to push the steel pipe. The other end of the push plate is connected to the fixed cover plate by a return spring. A proximity sensor is also installed on the fixed cover plate. The steel pipe contacts the push plate and pushes the push plate away from the initial position, thereby stretching the return spring. The stretched return spring returns to its original position, allowing the push plate to return to the initial position. After one side of the movable plate extends outward, a buffer block that cooperates with the proximity switch frame and a sensing frame that cooperates with the anti-collision component are fixedly arranged at the lower end.

[0013] The material turning mechanism includes a feeding flap, a feeding flap shaft, a second buffer plate, a first buffer plate, a spring guide column, a flap connecting shaft, a material turning hydraulic cylinder, and a hydraulic cylinder support; A second buffer plate is symmetrically arranged on both sides of the upper end of the feeding flap. Each second buffer plate is connected to a corresponding first buffer plate through multiple spring guide columns, so that the first buffer plate is used to contact the steel pipe. A buffer spring is wound on each spring guide column. The buffer spring is arranged between the second buffer plate and the corresponding first buffer plate to buffer the pressure of the steel pipe. The lower end of the feeding flap is fixedly connected to the feeding piston rod at one end of the feeding hydraulic cylinder via the flap connecting shaft. The feeding hydraulic cylinder is mounted on the lower layer of the vertical part of the T-shaped base frame via the feeding hydraulic cylinder support. The middle part of the feeding flap is provided with a second shaft hole that connects to the feeding flap shaft. The feeding flap shaft is installed on the support column connecting the lower and upper layers of the vertical part of the T-shaped base frame.

[0014] II. Working Method of a Stepped Steel Pipe Feeding Device with Single-Pipe Separation and Centering Capability The working method is as follows: A single steel pipe is separated from multiple steel pipes by multiple lifting mechanisms. Then, the steel pipe is aligned by a combination of an alignment swing mechanism and an alignment moving mechanism. Finally, the steel pipe is flipped to the next station by a flipping mechanism.

[0015] The specific working method is as follows: Step 1: Initially, multiple steel pipes are stacked on the stacking area of ​​the T-shaped base frame. The guide piston rods of two symmetrically arranged guide hydraulic cylinders are pushed out simultaneously, causing the corresponding guide plates to swing and thus pushing all the steel pipes into the slope area of ​​the T-shaped base frame. Step 2: All the steel pipes are arranged sequentially on the slope area by their own weight. The guide hydraulic cylinder drives the guide piston rod and the guide plate to reset together. The first hydraulic lifting cylinders of the two symmetrically arranged first lifting mechanisms simultaneously push out the corresponding piston rods, thereby driving the corresponding lifting separation plate to separate and lift the individual steel pipes onto the first step of the lifting area. The individual steel pipes roll down to the connection between the first step and the second step by their own weight. Step 3: The first hydraulic lifting cylinder drives the corresponding lifting separation plate to reset. Two sets of symmetrically arranged swing plate hydraulic cylinders simultaneously push out the corresponding swing plate piston rods, thereby pushing the alignment swing plate so that the single steel pipe contacts the two sets of symmetrically arranged rollers. This lifts the single steel pipe away from the first step of the T-shaped base frame until it aligns with the alignment moving mechanism on both sides. Then, the two symmetrical motors of the alignment moving mechanism synchronously drive the two alignment moving carriages to move towards the two ends of the single steel pipe until the proximity sensors on the two alignment moving carriages receive the signal that the push plate is in contact with the single steel pipe. The steel pipe contacts the push plate and pushes the push plate in the opposite direction to slide away from the initial position, thereby stretching the reset spring. Then, the two motors of the alignment moving mechanism reverse and drive the two alignment moving carriages to move away from the end face of the steel pipe to reset. The push plate returns to the initial position through the action of the reset spring, the swing plate hydraulic cylinder resets, and the steel pipe falls back onto the first step of the T-shaped base frame. Step 4: The two symmetrical second lifting hydraulic cylinders of the second lifting mechanism are simultaneously extended to lift the single steel pipe to the second step. The steel pipe rolls down by its own weight and comes into contact with the first buffer plate of the loading flap. The two symmetrical loading hydraulic cylinders are simultaneously retracted, and the loading flap is rotated to flip the single steel pipe to the next station through the first buffer plate.

[0016] The beneficial effects of this invention are as follows: Using the device of this invention, the lifting action of the guiding mechanism completes the process of introducing stacked steel pipes. The long ramp set by the T-shaped base frame allows multiple steel pipes to be arranged automatically, avoiding the jamming caused by stacking. Furthermore, the device of this invention, through multiple lifting mechanisms, can separate a single steel pipe from multiple consecutively arranged steel pipes and lift it to the next workstation. Through the combined movement of the alignment swing plate mechanism and the alignment moving mechanism, the centering and alignment of the steel pipes is achieved, solving the problem of uneven end positions during steel pipe feeding and improving the orderliness and stability of the production line. This invention can adapt to the feeding of steel pipes of different lengths and diameters, achieving single-pipe separation and simultaneously completing the axial movement and centering of the steel pipes, avoiding the problems of stacking and misalignment during steel pipe feeding, and improving the orderliness and stability of the production line. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of the T-shaped base frame of the device of the present invention; Figure 3 This is a view of the device of the present invention from direction A; Figure 4 This is the device of the present invention. Figure 3 Sectional view of CC; Figure 5 This is a schematic diagram of the alignment plate structure of the device of the present invention; Figure 6 This is a cutaway view of the inventive device from direction B; Figure 7 This is a partial enlarged view of the alignment and moving mechanism P of the device of the present invention; Figure 8 This is the device of the present invention. Figure 3 Sectional view of BB; Figure 9 This is a state view of the steel pipe being lifted by the first lifting mechanism of the device of the present invention; Figure 10 This is a partial enlarged view of the structure at point Y of the material turning mechanism of the device of the present invention.

[0018] In the diagram: 0-T-type base frame, 1-Guiding mechanism, 2-First lifting mechanism, 3-Second lifting mechanism, 4-Aligning swing plate mechanism, 5-Aligning moving mechanism, 6-Tilting mechanism, 7-Stacked steel pipes, 8-Shim, 01-Support plate, 02-Base, 03-Aligning base frame, 11-Guiding plate, 12-First guiding shaft, 13-Guiding piston rod, 14-Guiding hydraulic cylinder, 15-Guiding hydraulic cylinder support, 16-Second guiding shaft, 21-First lifting hydraulic cylinder, 31-Second lifting hydraulic cylinder, 41-Aligning swing plate, 42-Swing plate piston rod, 43-Swing plate hydraulic cylinder, 44-Swing plate hydraulic cylinder support, 45-Swing plate rotating shaft, 46-Anti-rotation plate, 47-Roller, 48-Pressure block, 49-Roller support, 50-Connecting plate 51-Alignment moving trolley, 52-Chain, 53-Sprocket, 54-Sprocket bearing seat, 55-Sprocket shaft, 56-Coupling reducer, 57-Motor, 58-Anti-collision component, 59-Proximity switch frame, 61-Feeding flap, 62-Flap piston rod, 63-Flap hydraulic cylinder, 64-Flap hydraulic cylinder support, 65-Feeding flap shaft, 66-Flap connecting shaft, 67-First buffer plate, 68-Second buffer plate, 69-Buffer spring, 321-Lifting separation plate, 511-Push plate, 512-Cover plate, 513-Moving plate, 514-Chain fixing plate, 515-T-shaped plate, 516-Roller, 517-Buffer block, 518-Sensed frame, 519-Reset spring, 691-Spring guide column. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] In addition, the term "multiple" should mean two or more.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] like Figure 1-3 As shown, a stepped steel pipe feeding device that can be individually separated and aligned includes a T-shaped base frame 0, a guiding mechanism 1, a first lifting mechanism 2, a second lifting mechanism 3, an alignment swing plate mechanism 4, an alignment moving mechanism 5, and a turning mechanism 6. The T-shaped base frame 0 is arranged horizontally with a T-shaped horizontal cross-section. The T-shape consists of two mutually perpendicular vertical parts and a horizontal part. On each side of the vertical part of the T-shaped base frame 0, there is a guide mechanism 1 for guiding stacked steel pipes 7, a first lifting mechanism 2 for separating a single steel pipe 7 and lifting it to the centering station, a centering and aligning swing plate mechanism 4 for lifting the steel pipe 7 and assisting in the axial movement of the steel pipe 7, and a second lifting mechanism 3 for lifting the aligned steel pipe 7 to the turning station. On each side, along the intersection of the vertical and horizontal parts, there are guide mechanisms 1, first lifting mechanisms 2, alignment swing plate mechanisms 4, and second lifting mechanisms 3 installed at intervals. At the intersection of the vertical and horizontal parts, there is a turning mechanism 6 for turning the aligned steel pipe 7 to the next station. On each side of the outward extension of the horizontal part, there is a symmetrically fixed alignment and moving mechanism 5 for pushing the steel pipe 7 to achieve axial movement and centering.

[0025] The T-shaped base frame 0 is arranged horizontally, and the material guiding mechanism 1, the first lifting mechanism 2, the aligning and swinging plate mechanism 4 and the second lifting mechanism 3 are symmetrically fixedly installed on both sides of the vertical part of the T-shaped base frame 0 at intervals. The installation direction is from the free end of the vertical part of the T-shaped base frame 0 to the connection end with the horizontal part.

[0026] like Figure 2 As shown, the T-shaped base frame 0 is welded from hollow square steel. The T-shaped base frame 0 is divided into two layers in the vertical direction. The upper layer of the vertical part is a vertical beam. A support plate 01 is symmetrically fixed on both sides of the vertical beam for installing the corresponding alignment swing plate mechanism 4. The upper layer of the horizontal part is a horizontal beam. The two sides of the horizontal beam extending outward are both alignment base frames 03 and are symmetrically arranged about the vertical beam. The lower layer of the vertical part is equipped with a base 02 for installing the first lifting mechanism 2 and the second lifting mechanism 3. The lower base 02 and the upper layer are fixedly connected by support columns. The lower and upper layers of the vertical part and the lower and upper layers of the horizontal part are also fixedly connected by support columns. The vertical section's vertical beams are divided into a lifting zone, a ramp zone, and a stockpiling zone from the intersection of the vertical and horizontal beams towards the free end of the vertical beams. The ramp zone is an inclined structure relative to the horizontal plane, and the inclination makes the connection between the ramp zone and the stockpiling zone higher than the ramp zone and the lifting zone, which facilitates the steel pipes rolling down to the first lifting mechanism 2 by their own weight. The top of the ramp zone connects to the stockpiling zone, which is parallel to the horizontal plane and is used to place the steel pipes 7. A guide mechanism 1 is symmetrically fixed on each side of the stockpiling zone. The bottom of the ramp zone connects to a two-stage stepped lifting zone, and the lifting... Both steps in the area are inclined relative to the horizontal plane, so that the steel pipe 7 on the steps rolls towards the intersection of the vertical beam and the horizontal beam. A first lifting mechanism 2 for lifting the steel pipe 7 to the first step is symmetrically fixed on both sides of the connection between the ramp area and the lifting area. A first lifting mechanism 2 for lifting the steel pipe 7 to the second step is symmetrically fixed on both sides of the intersection of the first step and the second step in the lifting area. An alignment swing plate mechanism 4 for aligning the steel pipe 7 is symmetrically fixed on both sides of the first step in the lifting area. One end of the second-level step in the lifting area connects to the first-level step, while the other end is symmetrically fixed with a material-turning mechanism 6. A gasket 8 is installed on the upper surface of the vertical beam of the T-shaped base frame 0, where it contacts the steel pipe 7. The gasket 8 is made of a wear-resistant material that does not easily scratch the surface of the steel pipe, such as PP board. The crossbeam is higher than the first-level step in the lifting area.

[0027] like Figure 4 As shown, each material guiding mechanism 1 includes a material guiding plate 11, a material guiding hydraulic cylinder 14, and a material guiding hydraulic cylinder support 15; The material guiding mechanism 1 on one side of the stacking area is as follows: one end of the material guiding plate 11 is movably installed on the side of the stacking area through the second material guiding shaft 16, so that the material guiding plate 11 swings around the second material guiding shaft 16. The other end of the material guiding plate 11 is fixedly connected to the material guiding piston rod 13 of the material guiding hydraulic cylinder 14 through the first material guiding shaft 12. The material guiding hydraulic cylinder 14 is fixed on the horizontal plane through the material guiding hydraulic cylinder support 15. Specifically, the bottom lug of the material guiding hydraulic cylinder 14 is axially connected to the upper seat hole of the material guiding hydraulic cylinder support 15. One end of the guide plate 11 is connected to the stacking area and is close to the connection between the stacking area and the ramp area. This causes the guide hydraulic cylinder 14 to drive the guide piston rod 13 to extend and lift the other end of the guide plate 11. The guide plate 11 swings and pushes the steel pipes 7 arranged in the stacking area into the ramp area. The guide piston rod 13 retracts and the guide plate 11 returns to the horizontal position to wait for the next batch of steel pipes 7. The guide mechanism 1 on the other side of the stacking area has the same symmetrical arrangement structure. Through the extension and retraction movement of the guide piston rod 13 of the guide hydraulic cylinder 14 in the guide mechanism 1, the stacked steel pipes 7 are guided onto the long ramp.

[0028] like Figure 8-9 As shown, each first lifting mechanism 2 includes a first hydraulic lifting cylinder 21 and a lifting separation plate 321; Each second lifting mechanism 3 includes a second hydraulic lifting cylinder 31 and a lifting separation plate 321; The base at one end of the first hydraulic lifting cylinder 21 is fixedly connected to the bottom base 02 of the T-shaped base frame 0 by bolts. The piston rod at the other end of the first hydraulic lifting cylinder 21 is fixedly connected to the lifting separation plate 321 by nuts, so that the piston rod pushes out / retracts and drives the lifting separation plate 321 to rise / fall. The base at one end of the second hydraulic lifting cylinder 31 is fixedly connected to the bottom base 02 of the T-shaped base frame 0 by bolts. The piston rod at the other end of the second hydraulic lifting cylinder 31 is fixedly connected to the lifting separation plate 321 by nuts, so that the piston rod pushes out / retracts and drives the lifting separation plate 321 to rise / fall. The lifting separation plate 321 is designed to fit a single steel pipe 7, so that when the lifting separation plate 321 is raised, it can only support a single steel pipe 7. The symmetrical arrangement of the first lifting mechanism 2 and the second lifting mechanism 3 enables each of their two lifting separation plates 321 to lift the single steel pipe 7 from both sides.

[0029] Specifically, the piston extension and retraction of the hydraulic lifting cylinder 21 in the first lifting mechanism 2 drives the lifting separation plate 321 to move up and down. This causes the upper slope of the lifting separation plate 321 to form a V-shaped groove with the stepped slope of the T-shaped base frame. The separated steel pipes sit in the V-shaped groove and are lifted together to the next step plane. The steel pipes then roll off the lifting separation plate 321 to the next work station by their own weight. The function of the second lifting mechanism 3 is the same as that of the first lifting mechanism 2.

[0030] like Figure 4-5 As shown, each alignment slab mechanism 4 includes an alignment slab 41, a slab mounting shaft 45, a slab hydraulic cylinder 43, a roller support 49, a roller 47, and a pressure block 48; Two platforms are welded to the upper end of the aligning swing plate 41, and the two platforms are arranged in a V-shape. A roller support 49 is fixedly installed on each platform by bolts. A roller 47 is installed on the upper end of each roller support 49 by a pressure block 48. One side of each roller 47 is in contact with the roller support 49. Specifically, the shaft of the roller 47 is fixedly installed on the seat hole on the roller support 49 by the pressure block 48. The other side of each roller 47 is used to support the single steel pipe 7 of the first step in the lifting area. The lower end of the aligning swing plate 41 is provided with a first shaft hole for connecting with the swing plate piston rod 42 at one end of the swing plate hydraulic cylinder 43. The lug at the other end of the swing plate hydraulic cylinder 43 is axially connected to the upper seat hole of the swing plate hydraulic cylinder support 44. The swing plate hydraulic cylinder support 44 is fixedly connected to the lower end face of the support plate 01 of the bolt T-shaped base frame 0. The center of the alignment swing piece 41 is provided with a first through hole for mounting the swing piece shaft 45. The alignment swing piece 41 of each alignment swing piece mechanism 4 is movably connected by a swing piece shaft 45, so that the alignment swing piece 41 on each side swings synchronously around the corresponding end of the swing piece shaft 45. The swing piece shaft 45 passes through the T-shaped base frame 0 and is movably connected to the alignment swing piece 41 at the other end of the T-shaped base frame 0. The swing piston rod 42 of the swing hydraulic cylinder 43 extends / retracts, causing the aligned swing plate 41 to swing in different directions, which in turn drives the roller 47 to rise / fall.

[0031] Specifically, the swing piston rod 42 of the swing hydraulic cylinder 43 extends and retracts, thereby rotating the alignment swing plate 41, so that the two sets of rollers 47 set on the roller support 49 fixed to the alignment swing plate 41 contact the steel pipe and are lifted, in preparation for the axial movement and centering of the steel pipe.

[0032] like Figure 6 As shown, each alignment movement mechanism 5 includes an anti-collision assembly 58, an alignment movement trolley 51, a chain 52, a sprocket 53, a sprocket bearing housing 54, a sprocket shaft 55, a motor 57, and a coupling reducer 56; Two sprockets 53 are arranged in parallel and a chain 52 is wound around the two sprockets 53 to form a chain drive structure. The chain 52 is parallel to the crossbeam and arranged in the aligned base frame 03. One of the sprockets 53 is connected to the alignment base frame 03 through a hole-shaft fit, and the other sprocket 53 is connected to the sprocket shaft 55. One end of the sprocket shaft 55 is connected to the alignment base frame 03 through the sprocket bearing seat 54, and the other end is connected to the motor 57 through the coupling reducer 56 to transmit the power of the motor. The coupling reducer 56 and the motor 57 are also fixed on the alignment base frame 03 through the sprocket bearing seat 54 or other means. An alignment trolley 51 is fixedly mounted on the chain 52, causing the chain to drive the alignment trolley 51 to move along the chain's direction. A proximity switch frame 59, an anti-collision assembly 58, and a proximity sensor 50 are fixedly mounted on the ramp side of the alignment base frame 03 near the T-shaped base frame 0. Specifically, the proximity sensor 50 is located at both ends on one side of the alignment base frame 03 to detect the movement of the trolley. The proximity switch frame 59 and the anti-collision assembly 58 are both mounted on the side of the alignment base frame 03 via fixing plates.

[0033] Specifically, the chain 52 moves along the axial direction of the steel pipe by rotating the motor 57 in both directions, and the alignment trolleys 51 arranged symmetrically at both ends of the steel pipe move synchronously to achieve the alignment process of the steel pipe.

[0034] like Figure 7 As shown, each alignment moving trolley 51 includes a chain fixing plate 514, a T-shaped plate 515, a moving plate 513, a roller 516, a buffer block 517, a sensing frame 518, and a return spring 519. The chain fixing plate 514 has a second through hole in the middle for fixed connection with the chain 52. A T-shaped plate 515 is symmetrically arranged on each side of the chain fixing plate 514 to form a cross structure. The alignment base frame 03 includes four parallel and spaced square hollow tubes. The cross structure formed by the chain fixing plate 514 and the two T-shaped plates 515 is embedded in the gaps between the four square hollow tubes, so that a square hollow tube is fitted at each of the four corners of the cross structure. The portions of the two T-shaped plates 515 located between the corresponding two square hollow tubes each have multiple wheel grooves, specifically two spaced apart. Each wheel groove is equipped with a roller 516 parallel to the chain fixing plate 514. The upper and lower ends of the roller 516 are used to fit the corresponding two square hollow tubes, so that the roller 516 rolls between the corresponding two square hollow tubes. Specifically, the alignment moving trolley 51 moves at the gaps between the square hollow tubes at the upper end of the alignment base frame 03 via the rollers 516.

[0035] The upper end of the chain fixing plate 514 is fixedly mounted with a moving plate 513 by screws. A fixing cover plate 512 is fixedly mounted on the moving plate 513 by screws. The fixing cover plate 512 covers the push plate 511, allowing the moving plate to slide within the cover plate 512 in a direction parallel to the crossbeam. One end of the push plate 511 is T-shaped for pushing and aligning the steel pipe 7. The other end of the push plate 511 is connected to the fixing cover plate 512 by a return spring 519. The fixing cover plate 512 is also equipped with a proximity sensor 50 connected to an external control system to detect whether the push plate 511 and the steel pipe 7 are in contact. When the steel pipe 7 contacts the push plate 511, it pushes the push plate 511 away from its initial position, thereby stretching the return spring 519. The stretched return spring 519 returns to its original position, allowing the push plate 511 to return to its initial position. The initial position is as follows: Specifically, the roller 516 can effectively reduce the friction of the alignment moving mechanism 5. The push plate 511 contacts the steel pipe at the T-shaped end, so that the other end of the push plate 511 stretches the return spring 519. At the same time, the other end of the push plate 511 moves away from the proximity sensor 50 on the cover plate 512. It can be determined that one end of the steel pipe is in contact with the push plate 511 of the alignment moving carriage 51. If the other end of the steel pipe 7 contacts the push plate 511 of the corresponding alignment moving carriage 51, it can be determined that the steel pipe has completed the alignment action. In addition, the proximity switch bracket 59 and proximity sensor 50 are arranged on the alignment base frame 03, which can effectively sense the sensing frame 518 installed on the alignment moving carriage 51. At the same time, a buffer block 517 is provided to prevent the alignment moving carriage 51 from colliding at the extreme position.

[0036] After one side of the movable plate 513 extends outward, a buffer block 517 that cooperates with the proximity switch frame 59 and a sensing frame 518 that cooperates with the anti-collision component 58 are fixedly arranged at the lower end.

[0037] like Figure 8-10 As shown, each material turning mechanism 6 includes a feeding flip plate 61, a feeding flip plate shaft 65, a second buffer plate 68, a first buffer plate 67, a spring guide column 691, a flip plate connecting shaft 66, a material turning hydraulic cylinder 63, and a hydraulic cylinder support 64. A second buffer plate 68 is symmetrically arranged on both sides of the upper end of the feeding flap 61. Each second buffer plate 68 is connected to a corresponding first buffer plate 67 by multiple spring guide posts 691, specifically two spring guide posts 691, so that the first buffer plate 67 is used to contact the steel pipe 7. A buffer spring 69 is wound on each spring guide post 691. The buffer spring 69 is arranged between the second buffer plate 68 and the corresponding first buffer plate 67 to buffer the pressure of the steel pipe 7. Specifically, it can effectively absorb the gravitational potential energy when the steel pipe 7 rolls down, and avoid the problem of the steel pipe 7 falling down due to excessive rolling speed. The lower end of the feeding flap 61 is fixedly connected to the flip piston rod 62 at one end of the flip hydraulic cylinder 63 via the flap connecting shaft 66. The flip hydraulic cylinder 63 is installed on the lower layer of the vertical part of the T-shaped base frame (0) via the flip hydraulic cylinder support 64. The middle part of the feeding flap 61 is provided with a second shaft hole that connects to the feeding flap shaft 65. The feeding flap shaft 65 is installed in the shaft hole on the support column connecting the lower and upper layers of the vertical part of the T-shaped base frame (0). That is, the lug shaft protruding from the middle of the tilting hydraulic cylinder 63 is connected to the holes of the symmetrically arranged tilting hydraulic cylinder support 64.

[0038] Specifically, the tilting piston rod 62 in the two symmetrically arranged tilting hydraulic cylinders 63 extends and retracts, realizing the synchronous tilting of the loading tilting plate 61. This allows the steel pipe lifted by the second lifting mechanism 3 to roll down onto the loading tilting plate 61 by its own weight. At the same time, the first buffer plate 67 set at the tail can effectively absorb the gravitational potential energy when the steel pipe rolls down, avoiding the problem of the steel pipe falling down due to excessive rolling speed.

[0039] The working method of a stepped, single-pipe detachable and aligned steel pipe feeding device is as follows: A single steel pipe 7 is separated from multiple steel pipes arranged in succession by multiple lifting mechanisms. Then, the steel pipe 7 is aligned by a combination of the alignment swing mechanism 4 and the alignment moving mechanism 5. Then, it is flipped to the next station by the flipping mechanism (6).

[0040] Taking a single steel pipe as an example, the specific process of loading the steel pipe is as follows: Step 1: Initially, multiple steel pipes 7 are stacked on the stacking area of ​​the T-shaped base frame 0. The guide piston rods 13 of the two symmetrically arranged guide hydraulic cylinders 14 are pushed out simultaneously, causing the corresponding guide plates 11 to swing and thus push all the steel pipes 7 into the slope area of ​​the T-shaped base frame 0. Step 2: All the steel pipes 7 are arranged in sequence on the slope area by their own gravity. The guide hydraulic cylinder 14 drives the guide piston rod 13 and the guide plate 11 to reset together. The first hydraulic lifting cylinder 21 of the two symmetrically arranged first lifting mechanisms 2 simultaneously pushes out the corresponding piston rod, thereby driving the corresponding lifting separation plate 321 to separate and lift the single steel pipe 7 onto the first step of the lifting area. The single steel pipe 7 rolls down to the connection between the first step and the second step by its own gravity. Step 3: The first hydraulic lifting cylinder 21 drives the corresponding lifting separation plate 321 to reset. The two sets of symmetrically arranged swing plate hydraulic cylinders 43 simultaneously push out the corresponding swing plate piston rods 42, thereby pushing the alignment swing plate 41 counterclockwise so that the single steel pipe 7 contacts the two sets of symmetrically arranged rollers 47, so that the single steel pipe 7 is lifted away from the first step of the T-shaped base frame 0 until it is aligned with the alignment moving mechanism 5 on both sides. Then, the two symmetrical motors 57 of the alignment moving mechanism 5 synchronously drive the two alignment moving carriages 51 to move towards the two ends of the single steel pipe 7 until the proximity sensors 50 on the two alignment moving carriages 51 receive the push plate 511. The signal that the steel pipe 7 is in contact with the single steel pipe 7 causes the steel pipe 7 to contact the push plate 511 and push the push plate 511 to slide away from the initial position, thereby stretching the reset spring 519. Then, the two motors 57 of the alignment moving mechanism 5 reverse drive the two alignment moving carriages 51 to move away from the end face of the steel pipe to reset. The push plate 511 returns to the initial position through the action of the reset spring 519. The swing plate hydraulic cylinder 43 resets, and the steel pipe falls back onto the first step of the T-shaped base frame 0. The cooperation between the proximity switch frame 59 and the buffer block 517, the anti-collision component 58 and the sensing frame 518 limits the alignment moving carriage 51 to prevent it from contacting the two sprockets 53. Step 4: The two symmetrical second lifting hydraulic cylinders 31 of the second lifting mechanism 3 are simultaneously extended to lift the single steel pipe 7 to the second step. The steel pipe rolls down under its own weight and comes into contact with the first buffer plate 67 of the loading flap 61. The two symmetrical flipping hydraulic cylinders 63 are simultaneously retracted, and the loading flap 61 is rotated clockwise to flip the single steel pipe 7 to the next station through the first buffer plate 67.

[0041] Specifically, initially, the stacked steel pipes 7 are placed on the horizontal surface at the right end of the long ramp of the T-shaped base frame 0. Two sets of symmetrically arranged guiding hydraulic cylinders 14 are simultaneously pushed out, pushing the stacked steel pipes 7 onto the long ramp of the T-shaped base frame 0. The steel pipes, under their own weight, are arranged sequentially on the long ramp. At this time, the guiding hydraulic cylinders 14 are reset, and the two sets of first hydraulic lifting cylinders 21 of the symmetrically arranged first lifting mechanism 2 are simultaneously pushed out, separating the individual steel pipes and lifting them to the next step. The steel pipes, under their own weight, roll down to the position of the second lifting mechanism 3. At this time, the first hydraulic lifting cylinders 21 are reset, and the two sets of symmetrically arranged swing plate hydraulic cylinders 43 are simultaneously pushed out, rotating counterclockwise to align the swing plates 41 so that the steel pipes come into contact with the two sets of rollers 47, thus lifting the steel pipes away from the T-shaped base frame 0. The two motors 57 of the alignment moving mechanism 5 synchronously drive the two alignment moving carriages 51 to move towards both ends of the steel pipe until the proximity sensors 50 on the two alignment moving carriages 51 receive the signal that the push plate 511 is in contact with the steel pipe. At this time, the two motors 57 of the alignment moving mechanism 5 reverse and drive the two alignment moving carriages 51 to move away from the end face of the steel pipe to reset. The swing plate hydraulic cylinder 43 resets, and the steel pipe falls back onto the T-shaped base frame 0. Then, the two sets of second lifting hydraulic cylinders 31 of the second lifting mechanism 3 synchronously push out, lifting the single separated and aligned steel pipe to the next step. At this time, the steel pipe rolls down by its own gravity and comes into contact with the loading flip plate 61. The two sets of flipping hydraulic cylinders 63 synchronously retract, and the loading flip plate 61 rotates clockwise to flip the steel pipe to the next station.

[0042] Finally, it should be noted that the embodiments described in this specification are merely examples of implementations of the inventive concept and are for illustrative purposes only. The scope of protection of this invention should not be considered as limited to the specific forms described in these embodiments, and the scope of protection of this invention also extends to equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.

Claims

1. A stepped, single-pipe detachable and centered steel pipe feeding device, characterized in that: It includes a T-shaped base frame (0), a material guiding mechanism (1), a first lifting mechanism (2), a second lifting mechanism (3), an alignment and swaying mechanism (4), an alignment and moving mechanism (5), and a flipping mechanism (6); The T-shaped base frame (0) is arranged horizontally and has a T-shaped horizontal cross section. The T-shape is composed of two mutually perpendicular vertical parts and a horizontal part. On each side of the vertical part of the T-shaped base frame (0), a material guiding mechanism (1), a first lifting mechanism (2), an alignment and swaying mechanism (4), and a second lifting mechanism (3) are symmetrically fixed. On each side, the material guiding mechanism (1), the first lifting mechanism (2), the alignment and swaying mechanism (4), and the second lifting mechanism (3) are installed sequentially and at intervals from the free end of the vertical part of the T-shaped base frame (0) to the intersection of the vertical and horizontal parts. A material turning mechanism (6) is fixedly installed at the intersection of the vertical and horizontal parts. On each side of the outward extension of the horizontal part, an alignment and moving mechanism (5) is symmetrically fixed.

2. The stepped, single-section detachable and aligned steel pipe feeding device according to claim 1, characterized in that: The T-shaped base frame (0) is divided into two layers in the vertical direction. The upper layer of the vertical part is a vertical beam, and a support plate (01) is symmetrically fixed on each side of the vertical beam for installing the corresponding alignment swing plate mechanism (4). The upper layer of the horizontal part is a horizontal beam, and the two sides of the horizontal beam extending outward are both alignment base frames (03) and are arranged symmetrically. The lower layer of the vertical part is equipped with a base (02) for installing the first lifting mechanism (2) and the second lifting mechanism (3). The lower and upper layers of the vertical part and the lower and upper layers of the horizontal part are fixedly connected by support columns. The vertical beams of the vertical section are divided into a lifting area, a ramp area and a stacking area from the intersection of the vertical beams and the horizontal beams to the free end of the vertical beams. The ramp area is a ramp structure that is inclined relative to the horizontal plane. The top of the ramp area is connected to the stacking area which is parallel to the horizontal plane. The stacking area is used to place steel pipes (7). A material guiding mechanism (1) is symmetrically fixed on each side of the stacking area. The bottom of the ramp area is connected to a two-stage stepped lifting area. Both steps of the lifting area are arranged inclined relative to the horizontal plane, so that the steel pipes (7) on the steps roll toward the intersection of the vertical beams and the horizontal beams. A first lifting mechanism (2) is symmetrically fixed on each side of the connection between the ramp area and the lifting area. A first lifting mechanism (2) is symmetrically fixed on each side of the intersection of the first-stage and second-stage steps of the lifting area. An alignment swing plate mechanism (4) is symmetrically fixed on each side of the first-stage step of the lifting area. One end of the secondary step in the lifting zone is used to connect to the primary step, and the other end is symmetrically fixed with a material turning mechanism (6) about the center; the crossbeam is higher than the primary step in the lifting zone.

3. The stepped, single-section detachable and aligned steel pipe feeding device according to claim 2, characterized in that: The material guiding mechanism (1) includes a material guiding plate (11), a material guiding hydraulic cylinder (14), and a material guiding hydraulic cylinder support (15). One end of the guide plate (11) is movably installed on the side of the stacking area via the second guide shaft (16), so that the guide plate (11) swings around the second guide shaft (16). The other end of the guide plate (11) is fixedly connected to the guide piston rod (13) of the guide hydraulic cylinder (14) via the first guide shaft (12). The guide hydraulic cylinder (14) is fixed on the horizontal surface via the guide hydraulic cylinder support (15). The end of the guide plate (11) connected to the stacking area is close to the connection part between the stacking area and the slope area, so that the guide hydraulic cylinder (14) drives the guide piston rod (13) to extend and lift the other end of the guide plate (11). The guide plate (11) swings and pushes the steel pipe (7) arranged in the stacking area into the slope area.

4. A stepped, single-section detachable and aligned steel pipe feeding device according to claim 3, characterized in that: The first lifting mechanism (2) includes a first hydraulic lifting cylinder (21) and a lifting separation plate (321); The second lifting mechanism (3) includes a second hydraulic lifting cylinder (31) and a lifting separation plate (321). The base of one end of the first hydraulic lifting cylinder (21) is fixedly connected to the bottom base (02) of the T-shaped base frame (0), and the piston rod of the other end of the first hydraulic lifting cylinder (21) is fixedly connected to the lifting separation plate (321) so that the piston rod pushes out / retracts to drive the lifting separation plate (321) to rise / fall. The base of one end of the second hydraulic lifting cylinder (31) is fixedly connected to the bottom base (02) of the T-shaped base frame (0), and the piston rod of the other end of the second hydraulic lifting cylinder (31) is fixedly connected to the lifting separation plate (321) so that the piston rod pushes out / retracts to drive the lifting separation plate (321) to rise / fall. The lifting separation plate (321) is designed to fit a single steel pipe (7) so that the lifting separation plate (321) can lift and support the single steel pipe (7). The symmetrically arranged first lifting mechanism (2) and second lifting mechanism (3) enable each of their two lifting separation plates (321) to lift the single steel pipe (7) from both sides.

5. A stepped, single-section detachable and aligned steel pipe feeding device according to claim 4, characterized in that: The alignment swing plate mechanism (4) includes an alignment swing plate (41), a swing plate mounting shaft (45), a swing plate hydraulic cylinder (43), a roller support (49), a roller (47), and a pressure block (48). The upper end of the alignment plate (41) is arranged with two platforms, and the two platforms are arranged in a V shape. A roller support (49) is fixedly installed on each platform. A roller (47) is installed on the upper end of each roller support (49) through a pressure block (48). One side of each roller (47) is in contact with the roller support (49), and the other side of each roller (47) is used to support the single steel pipe (7) of the first step in the lifting area. The lower end of the alignment plate (41) is provided with a first shaft hole for connecting with the piston rod (42) of the plate hydraulic cylinder (43) at one end. The other end of the plate hydraulic cylinder (43) is connected to the plate hydraulic cylinder support (44). The lower end face of the support plate (01) of the T-shaped base frame (0) of the plate hydraulic cylinder support (44) is fixedly connected. The center of the alignment pendulum (41) is provided with a first through hole for mounting the pendulum pivot (45). The alignment pendulum (41) of the alignment pendulum mechanism (4) is movably connected around the pendulum pivot (45), so that the alignment pendulum (41) swings around the pendulum pivot (45). The swing piston rod (42) of the swing hydraulic cylinder (43) extends / retracts, causing the aligned swing plate (41) to swing, which in turn drives the roller (47) to rise / fall.

6. A stepped, single-section detachable and aligned steel pipe feeding device according to claim 5, characterized in that: The alignment movement mechanism (5) includes a collision avoidance component (58), an alignment movement trolley (51), a chain (52), a sprocket (53), a sprocket bearing seat (54), a sprocket shaft (55), a motor (57), and a coupling reducer (56). The two sprockets (53) are arranged in parallel and the chain (52) is wound around the two sprockets (53) to form a chain drive structure, and the chain (52) is parallel to the crossbeam and arranged in the alignment base frame (03); One of the sprockets (53) is connected to the alignment base frame (03) through a hole shaft fit, and the other sprocket (53) is connected to the sprocket shaft (55). One end of the sprocket shaft (55) is connected to the alignment base frame (03) through a sprocket bearing seat (54), and the other end is connected to the motor (57) through a coupling reducer (56) to transmit the power of the motor. The alignment moving trolley (51) is fixedly installed on the chain (52) so that the chain drives the alignment moving trolley (51) to move along the chain arrangement direction. The alignment base frame (03) is fixedly installed on one side with a proximity switch frame (59), a collision protection component (58) and a proximity sensor (50).

7. A stepped, single-section detachable and aligned steel pipe feeding device according to claim 6, characterized in that: The alignment moving trolley (51) includes a chain fixing plate (514), a T-shaped plate (515), a moving plate (513), a roller (516), a buffer block (517), a sensing frame (518), and a return spring (519). The chain fixing plate (514) has a second through hole in the middle for fixed connection with the chain (52). A T-shaped plate (515) is symmetrically arranged on each side of the chain fixing plate (514) to form a cross structure. The alignment base frame (03) includes four parallel and spaced square tubes. The cross structure formed by the chain fixing plate (514) and the two T-shaped plates (515) is embedded in the gap of the four square tubes so that a square tube is fitted at each of the four corners of the cross structure. The two T-shaped plates (515) each have multiple spaced wheel grooves in the part between the corresponding two square tubes. Each wheel groove is equipped with a roller (516) parallel to the chain fixing plate (514). The upper and lower ends of the roller (516) are used to fit the corresponding two square tubes so that the roller (516) rolls between the corresponding two square tubes. A movable plate (513) is fixedly installed on the upper end of the chain fixing plate (514). A fixed cover plate (512) is provided above the movable plate (513). The fixed cover plate (512) covers the push plate (511) so that the movable plate slides in the cover plate (512) in a direction parallel to the crossbeam. One end of the push plate (511) is used to push the steel pipe (7). The other end of the push plate (511) and the fixed cover plate (512) are connected by a return spring (519). A proximity sensor (50) is also installed on the fixed cover plate (512). The steel pipe (7) contacts the push plate (511) and pushes the push plate (511) in the opposite direction to slide away from the initial position, thereby stretching the return spring (519). The stretched return spring (519) returns to its original position, so that the push plate (511) returns to the initial position. After one side of the movable plate (513) extends outward, a buffer block (517) that cooperates with the proximity switch frame (59) and a sensing frame (518) that cooperates with the anti-collision component (58) are fixedly arranged at the lower end.

8. A stepped, single-section detachable and aligned steel pipe feeding device according to claim 7, characterized in that: The material turning mechanism (6) includes a feeding flip plate (61), a feeding flip plate shaft (65), a second buffer plate (68), a first buffer plate (67), a spring guide column (691), a flip plate connecting shaft (66), a material turning hydraulic cylinder (63), and a hydraulic cylinder support (64). A second buffer plate (68) is symmetrically arranged on both sides of the upper end of the feeding flap (61). Each second buffer plate (68) is connected to a corresponding first buffer plate (67) through multiple spring guide posts (691) so that the first buffer plate (67) is used to contact the steel pipe (7). A buffer spring (69) is wound on each spring guide post (691). The buffer spring (69) is arranged between the second buffer plate (68) and the corresponding first buffer plate (67) to buffer the pressure of the steel pipe (7). The lower end of the loading flap (61) is fixedly connected to the loading piston rod (62) at one end of the loading hydraulic cylinder (63) via the flap connecting shaft (66). The loading hydraulic cylinder (63) is installed on the lower layer of the vertical part of the T-shaped base frame (0) via the loading hydraulic cylinder support (64). The middle part of the feeding flap (61) is provided with a second shaft hole that is connected to the feeding flap shaft (65). The feeding flap shaft (65) is installed on the support column connecting the lower and upper layers of the vertical part of the T-shaped base frame (0).

9. The working method of the stepped, single-section detachable and aligned steel pipe feeding device as described in claim 8, characterized in that, The working method is as follows: A single steel pipe (7) is separated from multiple steel pipes (7) by multiple lifting mechanisms. Then, the steel pipe (7) is aligned by a combination of the alignment swing mechanism (4) and the alignment moving mechanism (5). Then, it is flipped to the next station by the flipping mechanism (6).

10. The working method of the stepped single-pipe detachable and aligned steel pipe feeding device according to claim 9, characterized in that, The specific working method is as follows: Step 1: Initially, multiple steel pipes (7) are stacked on the stacking area of ​​the T-shaped base frame (0). The guide piston rods (13) of two symmetrically arranged guide hydraulic cylinders (14) are pushed out simultaneously, causing the corresponding guide plate (11) to swing and thus push all the steel pipes (7) into the slope area of ​​the T-shaped base frame (0). Step 2: All the steel pipes (7) are arranged in sequence on the slope area by their own weight. The guide hydraulic cylinder (14) drives the guide piston rod (13) and the guide plate (11) to reset together. The first hydraulic lifting cylinder (21) of the two symmetrically arranged first lifting mechanisms (2) simultaneously pushes out the corresponding piston rod, thereby driving the corresponding lifting separation plate (321) to separate and lift the single steel pipe (7) onto the first step of the lifting area. The single steel pipe (7) rolls down to the connection between the first step and the second step by its own weight. Step 3: The first hydraulic lifting cylinder (21) drives the corresponding lifting separation plate (321) to reset. The two sets of symmetrically arranged swing plate hydraulic cylinders (43) simultaneously push out the corresponding swing plate piston rods (42), thereby pushing the alignment swing plate (41) so that the single steel pipe (7) contacts the two sets of symmetrically arranged rollers (47), so that the single steel pipe (7) is lifted away from the first step of the T-shaped base frame (0) until it is aligned with the alignment moving mechanism (5) on both sides. Then, the two symmetrical motors (57) of the alignment moving mechanism (5) synchronously drive the two alignment moving trolleys (51) to move towards the two ends of the single steel pipe (7) until the two ends are aligned. The proximity sensors (50) on the alignment moving trolleys (51) receive signals that the push plate (511) is in contact with the single steel pipe (7). The steel pipe (7) contacts the push plate (511) and pushes the push plate (511) in the opposite direction to slide away from the initial position, thereby stretching the reset spring (519). Then, the two motors (57) of the alignment moving mechanism (5) reverse drive the two alignment moving trolleys (51) to move away from the end face of the steel pipe to reset. The push plate (511) returns to the initial position through the action of the reset spring (519). The swing plate hydraulic cylinder (43) resets, and the steel pipe falls back onto the first step of the T-shaped base frame (0). Step 4: The two symmetrical second lifting hydraulic cylinders (31) of the second lifting mechanism (3) are simultaneously pushed out to lift the single steel pipe (7) to the second step. The steel pipe rolls down by its own weight and comes into contact with the first buffer plate (67) of the loading flap (61). The two symmetrical turning hydraulic cylinders (63) are simultaneously retracted and the loading flap (61) is rotated to turn the single steel pipe (7) to the next station through the first buffer plate (67).

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