A steel pipe tooth rolling production line

Abstract

The application discloses a steel pipe gear rolling production line and belongs to the technical field of steel pipe gear rolling processing. The production line comprises a gear rolling machine, a steel pipe feeding assembly and a feeding line, the gear rolling machine and the steel pipe feeding assembly are arranged on the two sides of the feeding line respectively, the steel pipe feeding assembly provides the steel pipe for the feeding line, the feeding line comprises a plurality of steel pipe conveying mechanisms, the steel pipe conveying mechanism comprises a conveying frame, a plurality of conveying rollers, a transverse conveying mechanism and a lifting mechanism, and the transverse conveying mechanism is used for transversely conveying the feeding for the gear rolling machine, the position layout of the gear rolling machine is reasonable, the width direction of the workshop occupies a small space, the feeding line arranged on the first floor of the workshop can simultaneously meet the feeding requirements of a plurality of gear rolling machines, the automation degree is high, the gripper does not need to move down and move up, the feeding rhythm is faster, the production rhythm of the gear rolling machine can be met, the problem that the gripper collides with the equipment or personnel does not exist, and the safety of the equipment and personnel is ensured.

Description

Technical Field

[0001] This invention relates to a steel pipe gear rolling production line, belonging to the field of steel pipe gear rolling technology. Background Technology

[0002] In the field of refrigeration technology, it is common to process different tooth shapes on steel pipes to increase the heat exchange area of ​​the steel pipes. At the same time, the tooth shape enhances the disturbance of the medium during heat exchange, thereby strengthening the heat exchange effect. The equipment used to process tooth shapes on steel pipes is a tooth rolling mill. The tooth rolling mill includes a pre-processing module, a main module, and a post-processing module. The main module is located between the pre-processing module and the post-processing module. For example, Chinese invention patent with authorization announcement number CN119216435B discloses a pipe tooth rolling mill and tooth rolling method. The pre-processing module of the tooth rolling mill is mainly responsible for conveying the mandrel to ensure that the mandrel can be inserted into the steel pipe to be processed and to support the steel pipe to be toothed. The post-processing module is mainly responsible for feeding the steel pipe to be processed and unloading the steel pipe after tooth rolling.

[0003] Existing steel pipe gear rolling production lines typically have three gear rolling mills positioned at the front and two at the back. For example, Chinese invention patent CN114734268B discloses an automated production line and method for heat exchanger tubes, where loading and unloading of the gear rolling mills is accomplished via a conveying device positioned above the mills. This layout has several drawbacks. First, with three gear rolling mills per row, the workshop width must accommodate them, resulting in a large production line width. While the workshop length may meet the requirements, the width is limited. Second, the conveying device above the mills poses a safety hazard, as the steel pipes may fall and impact the mills or operators. Furthermore, the truss-based loading and unloading system can cause the handles to extend downwards and upwards, disrupting the loading and unloading cycle. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a steel pipe gear rolling production line.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a steel pipe gear rolling production line, including multiple gear rolling mills for steel pipe gear rolling, and a steel pipe feeding assembly and a feeding line, wherein the multiple gear rolling mills and the steel pipe feeding assembly are respectively arranged on both sides of the feeding line, and the gear rolling mills on each side are arranged in a row.

[0006] The steel pipe feeding assembly provides steel pipes to the feeding line. The steel pipe feeding assembly includes a steel pipe rack and a steel pipe feeding mechanism disposed on the steel pipe rack. The steel pipe rack is provided with a storage area for storing steel pipes.

[0007] The feeding line includes multiple steel pipe conveying mechanisms, which are connected end to end or spaced apart. Each steel pipe conveying mechanism includes a conveying frame, multiple conveying rollers rotatably mounted on the conveying frame, a roller drive mechanism for driving the conveying rollers to rotate, a transverse conveying mechanism mounted on one or both sides of the conveying frame, and a lifting mechanism for lifting the steel pipes on the conveying rollers. The multiple conveying rollers are longitudinally distributed on the conveying frame. The transverse conveying mechanism is used to transversely convey the steel pipes conveyed by the conveying rollers to the feeding section of the post-processing module of the gear rolling mill for feeding the gear rolling mill.

[0008] The conveyor frame is provided with an infeed guiding mechanism on the side near the steel pipe feeding assembly for guiding the steel pipe of the steel pipe feeding assembly to the conveying roller; one or both sides of the conveyor frame are provided with an outfeed guiding mechanism for guiding the steel pipe lifted by the lifting mechanism to the transverse conveying mechanism.

[0009] The beneficial effects of this invention are as follows: A single row of gear rolling mills can accommodate a maximum of two mills, reducing the space occupied in the width direction of the workshop. If there are five mills, one can be arranged in the first row, two in the second, and two in the third. The steel pipe feeding assembly can be positioned opposite the first row of mills, with the feeding line located between the two rows of mills, capable of supplying steel pipes to all mills. The storage area of ​​the steel pipe rack can store multiple steel pipes. Under the action of the steel pipe feeding mechanism, the steel pipes can be moved to the corresponding steel pipe conveying mechanism via the feeding guide mechanism. Under the action of the conveying rollers of the steel pipe conveying mechanism, they are longitudinally conveyed to the position laterally corresponding to the mill lacking material. Under the action of the lifting mechanism and the discharge guide mechanism, the steel pipes can be laterally conveyed to the mill lacking material via the transverse conveying mechanism. The feeding section of the post-processing module of the gear rolling mill can reasonably arrange multiple gear rolling mills in a workshop with limited width according to the requirements of steel pipe gear rolling capacity, so as to reduce the width of the production line and make the width of the production line uniform. The feeding line and the gear rolling mill are both located on the first floor of the workshop, eliminating the need for truss overhead transport of steel pipes and ensuring the safety of equipment and personnel. The steel pipe feeding assembly can supply steel pipes to the steel pipe gear rolling production line. The feeding line can smoothly transfer the steel pipes to the processing area of ​​the gear rolling mill that is short of material. That is, the steel pipes in the storage area are moved onto the conveying rollers through the steel pipe feeding mechanism and the feeding guide mechanism. The conveying rollers can realize the longitudinal conveying of the steel pipes. After the steel pipes are longitudinally conveyed to the position, under the action of the lifting mechanism, the discharge guide mechanism and the transverse conveying mechanism, the steel pipes can be transversely conveyed to the position of the gear rolling mill that is short of material to supply the gear rolling mill. In summary, the gear rolling mill of this invention has a reasonable layout, occupies little space in the width direction of the workshop, and the feeding line is arranged on the first floor of the workshop, which can meet the feeding needs of multiple gear rolling mills at the same time. It has a high degree of automation, and the downward and upward movements of the gripper without the need for a handling device result in a faster feeding cycle, which can meet the production rhythm of the gear rolling mill. There is also no problem of the gripper hitting the equipment or personnel, which ensures the safety of the equipment and personnel.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the steel pipe feeding mechanism includes multiple feeding components and a single feeding component. The multiple feeding components include multiple feeding lifting units mounted on the steel pipe rack and a lifting drive mechanism for driving the feeding lifting units to move up and down. The steel pipe rack is provided with a feeding section. Both the feeding section and the storage area are inclined. Under the action of the feeding lifting unit, multiple steel pipes can be lifted from the storage area to the feeding section. The feeding lifting unit includes a feeding lifting plate. The bearing surface of the feeding lifting plate is inclined with the discharge side lower and the infeed side higher.

[0012] The single-piece feeding assembly includes a feeding shaft rotatably mounted on the feeding section, a plurality of feeding blocks mounted on the feeding shaft, and a feeding drive mechanism for driving the feeding shaft to rotate. The feeding blocks are provided with a turning notch for turning one of the steel pipes.

[0013] The beneficial effects of adopting the above-mentioned further solution are that the storage area can hold multiple steel pipes, such as hundreds of steel pipes. During feeding, multiple feeding components operate, lifting and lowering once to fill the feeding section with steel pipes at once, such as 5-7 pipes. Then, a single feeding component operates, the feeding block rotates, and turns a single steel pipe to the discharge side of the feeding section. This steel pipe can be moved to the conveying roller through the feeding guide mechanism. Under the rotation of the conveying roller, the steel pipe can be longitudinally conveyed, and then the subsequent transverse conveying mechanism supplies material to the gear rolling mill that is short of material. The steel pipe feeding assembly can not only meet the storage needs of large quantities of steel pipes, but also realize the automatic feeding of single steel pipes, which can significantly improve the feeding efficiency of steel pipes without manual intervention, improve the automation level of the steel pipe gear rolling production line, and provide a stable and reliable supply of steel pipes for the subsequent gear rolling process of the gear rolling mill.

[0014] Furthermore, the steel pipe feeding mechanism also includes a steel pipe lifting assembly, which is located between the single-pipe feeding assembly and the feeding guide mechanism. The steel pipe lifting assembly includes a lifting frame, a drive shaft rotatably mounted on the lifting frame, a driven shaft, multiple lifting units mounted on the lifting frame, and a lifting drive mechanism for driving the drive shaft. Each lifting unit includes a drive sprocket, a driven sprocket, a lifting chain surrounding the drive sprocket and the driven sprocket, and a lifting plate mounted on the lifting chain. The drive sprocket is mounted on the drive shaft, and the driven sprocket is mounted on the driven shaft.

[0015] The beneficial effect of adopting the above-mentioned further solution is that a single steel pipe conveyed by the single feeding assembly can enter the steel pipe lifting assembly for lifting. During the upward movement of the lifting plate, it receives the single steel pipe that has passed through the rotating feeding block and is carried upward by the lifting chain, turning to the side of the feeding guide mechanism. The steel pipe can then enter the conveying roller through the feeding guide mechanism. The lifting drive mechanism drives the drive sprocket to rotate through the drive shaft, thereby driving the lifting chain to operate, ensuring that the lifting plate can stably convey the steel pipe from a low position to a high position. With the steel pipe lifting assembly, the steel pipe rack does not need to be manufactured very high; the steel pipe can be completely sent to the steel pipe conveying mechanism through the steel pipe lifting assembly, facilitating the storage of steel pipes on the steel pipe rack and reducing the manufacturing cost of the steel pipe rack.

[0016] Furthermore, the lifting drive mechanism includes a lifting shaft and a lifting motor that drives the lifting shaft to rotate. The feeding lifting plate is provided with a lifting rack, and the lifting shaft is provided with a plurality of lifting gears. The lifting gears can mesh with the lifting rack, and the lifting shaft is rotatably mounted on the steel pipe rack.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the lifting motor drives the lifting gear to rotate through the lifting shaft, thereby forming a meshing transmission with the lifting rack to realize the up and down movement of the feeding lifting plate, ensuring that the feeding lifting plate maintains stable operation when carrying the steel pipe and avoiding shaking or deviation.

[0018] Furthermore, the transverse conveying mechanism includes a conveying arm shaft rotatably mounted on the conveying frame, a plurality of transverse conveying arms mounted on the conveying arm shaft, and a rotation drive mechanism for driving the conveying arm shaft to rotate. The transverse conveying arms extend toward the loading section of the post-processing module of the gear rolling mill.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the steel pipe is longitudinally conveyed under the action of the conveying roller. When it is conveyed to the position of the gear rolling mill that requires the steel pipe, the lifting mechanism is activated, the steel pipe is raised, and under the action of the discharge guiding mechanism, the steel pipe can be guided smoothly into the transverse conveying arm. The discharge end of the transverse conveying arm extends to the loading part of the post-processing module of the gear rolling mill. Under the action of the transverse conveying arm, the steel pipe can be smoothly moved into the processing area of ​​the gear rolling mill, realizing the supply of steel pipes to the gear rolling mill that is short of material.

[0020] Furthermore, the feeding guide mechanism includes multiple feeding guide plates, which are arranged along the length of the conveyor frame, and the bearing surface of the feeding guide plates is inclined with the outer side higher than the inner side.

[0021] The discharge guiding mechanism includes multiple discharge guiding plates, which are arranged along the length of the conveyor frame. The bearing surface of the discharge guiding plate is inclined with the inner side higher than the outer side.

[0022] The beneficial effect of adopting the above-mentioned further solution is that when one side of the feeding line is a steel pipe feeding assembly, there is an infeed guide plate on that side of the conveyor frame. After the steel pipe feed mechanism passes through the infeed guide plate, the steel pipe can smoothly enter the conveyor roller of the feeding line. When one or both sides of the feeding line are a gear rolling mill, there are discharge guide plates on one or both sides of the feeding line. The steel pipes conveyed by the conveyor rollers can be transversely conveyed to the transverse conveying mechanism on the corresponding side through the discharge guide plate, so as to realize the steel pipe supply of the gear rolling mill on the corresponding side.

[0023] Furthermore, the lifting mechanism includes a lifting beam, multiple lifting plates disposed on the lifting beam, and a lifting drive cylinder for driving the lifting beam to move up and down. The bearing surface of the lifting plate is inclined with the inner side higher than the outer side. The lifting plate can lift the steel pipe and guide it to the discharge guide mechanism.

[0024] The beneficial effect of adopting the above-mentioned further solution is that the purpose of the lifting mechanism is to lift the steel pipe on the conveying roller and guide it into the discharge guide mechanism to supply material to the gear rolling mill. Under the action of the lifting drive cylinder, the lifting beam can move up and down. Multiple lifting plates move synchronously with the lifting beam, which can smoothly lift the steel pipe from a low position to a high position. During the process of the steel pipe rising, the vertical plate of the discharge guide plate of the discharge guide mechanism can limit the steel pipe. When the lifting plate is raised to the point where the steel pipe can enter the inclined plate of the corresponding discharge guide plate, the steel pipe is smoothly moved from the lifting plate to the discharge guide plate and then enters the transverse conveying arm on the corresponding side. The lifting mechanism lifts the steel pipe conveyed longitudinally and guides it into the transverse conveying, thereby improving the conveying efficiency of the steel pipe and reducing the risk of slippage. When the gear rolling mill is on one side of the feeding line, one set of lifting mechanisms is provided, which can lift the steel pipe and guide it through the discharge guide mechanism on one side to feed the gear rolling mill on that side; when there are gear rolling mills on both sides of the feeding line, there are two sets of lifting mechanisms in the conveyor frame. One set of lifting mechanisms can lift the steel pipe and feed it to the gear rolling mill on one side of the feeding line under the guidance of the discharge guide mechanism on one side, and the other set of lifting mechanisms can lift the steel pipe and feed it to the gear rolling mill on the other side of the feeding line under the guidance of the discharge guide mechanism on the other side.

[0025] Furthermore, the conveying roller drive mechanism includes two transmission gears mounted on the roller shaft of the conveying roller, a drive motor mounted on the conveying frame, and a drive gear mounted on the output shaft of the drive motor. The drive gear is connected to one of the transmission gears of one of the conveying rollers via a drive chain, and the transmission gears between adjacent conveying rollers are connected via a drive chain.

[0026] The beneficial effect of adopting the above-mentioned further solution is that the steel pipes on the feeding line are longitudinally conveyed by the conveying rollers. Even if the steel pipe conveying mechanism is set at intervals, it is still necessary to ensure that the steel pipes can be stably conveyed between adjacent steel pipe conveying mechanisms. The power of the conveying rollers is provided by the drive motor. When the drive motor moves, it can transmit power to one conveying roller of the steel pipe conveying mechanism through the drive gear and drive chain. The adjacent conveying rollers can be driven by the cooperation of the transmission gear and transmission chain to realize the rotation drive of all conveying rollers.

[0027] Furthermore, it also includes a steel pipe receiving mechanism, which is correspondingly arranged on the discharge side of the post-processing module of the gear rolling mill;

[0028] The steel pipe receiving mechanism includes a receiving frame, a receiving assembly mounted on the receiving frame, and a discharging assembly; the receiving assembly includes a receiving shaft rotatably mounted on the receiving frame, a plurality of receiving arms mounted on the receiving shaft, a liquid receiving tray mounted between the receiving arms, and a receiving drive mechanism for driving the receiving shaft to rotate.

[0029] The discharge assembly includes a discharge shaft rotatably mounted on the receiving frame, a plurality of discharge arms mounted on the discharge shaft, a liquid discharge plate disposed between the discharge arms, and a discharge drive mechanism for driving the discharge shaft to rotate, wherein the liquid discharge plate is located below the liquid receiving plate.

[0030] The beneficial effect of adopting the above-mentioned further solution is that after the steel pipe completes the gear rolling process on the gear rolling mill, the steel pipe will enter the dilution tank on the discharge side of the post-processing module of the gear rolling mill to soak for a certain period of time to clean the steel pipe. The steel pipe coming out of the dilution tank will carry a certain amount of liquid. If it is directly discharged into the unloading line of the workshop, the liquid will flow everywhere in the workshop. Therefore, a steel pipe receiving mechanism is added to the discharge side of the post-processing module of the gear rolling mill. The steel pipe is discharged from the dilution tank and enters the receiving arm. Under the action of the receiving drive mechanism, the receiving arm can adjust its tilt angle so that the steel pipe can pass smoothly through the receiving arm and move to the discharge arm. Under the action of the discharge drive mechanism, the discharge arm can also adjust its tilt angle so that the steel pipe can pass smoothly through the steel pipe receiving mechanism. The steel pipe receiving mechanism has a liquid receiving tray and a liquid discharge tray to collect the liquid dripping from the steel pipe and collect it in a centralized manner, which can keep the workshop floor dry and clean.

[0031] Furthermore, the steel pipe receiving mechanism also includes a receiving blocking assembly, which includes a receiving blocking shaft, a plurality of receiving blocks disposed on the receiving blocking shaft, and a blocking shaft driving mechanism for driving the receiving blocking shaft to rotate. The receiving blocking shaft is rotatably disposed at the discharge end of the discharge arm.

[0032] The beneficial effects of adopting the above-mentioned further solution are that the receiving baffle shaft can rotate under the action of the baffle shaft drive mechanism, and the receiving baffle block can rotate with the receiving baffle shaft, allowing the blocking position and angle to be adjusted according to actual needs. The receiving baffle assembly can block the steel pipe entering the steel pipe receiving mechanism, reducing the impact on the steel pipe. In addition, it can also make the liquid on the surface of the steel pipe drip onto the liquid receiving tray and liquid discharge tray for easy collection later. When the steel pipe needs to be discharged, the receiving baffle block of the receiving baffle assembly can rotate down and no longer block the steel pipe, allowing the steel pipe to smoothly enter the unloading line, ensuring the dryness and cleanliness of the workshop floor. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention;

[0034] Figure 2 A top view of the steel pipe feeding assembly, the steel pipe conveying mechanism, and a gear rolling mill.

[0035] Figure 3 for Figure 2 Front view structural diagram;

[0036] Figure 4 A schematic diagram showing the angle and structure of the steel pipe feeding assembly and the corresponding steel pipe conveying mechanism.

[0037] Figure 5 for Figure 4 Front view structural diagram;

[0038] Figure 6 A schematic diagram of the steel pipe feeding assembly and the corresponding steel pipe conveying mechanism from two angles;

[0039] Figure 7 A schematic diagram of the steel pipe feeding assembly;

[0040] Figure 8 Schematic diagrams of multiple feeding assemblies and single feeding assemblies;

[0041] Figure 9 This is a structural schematic diagram of the steel pipe lifting assembly;

[0042] Figure 10 This is a schematic diagram of the steel pipe conveying mechanism located between the steel pipe feeding assembly and the gear rolling mill.

[0043] Figure 11 for Figure 10 Front view structural diagram;

[0044] Figure 12 A top view schematic diagram of the steel pipe conveying mechanism supplying material to two gear rolling mills;

[0045] Figure 13 for Figure 12Front view structural diagram;

[0046] Figure 14 for Figure 12 A schematic diagram of the three-dimensional structure;

[0047] Figure 15 This is a schematic diagram of the steel pipe conveying mechanism located between two gear rolling mills;

[0048] Figure 16 for Figure 15 Front view structural diagram;

[0049] Figure 17 for Figure 15 A schematic diagram of the retracted lateral conveying arm of the steel pipe conveying mechanism;

[0050] Figure 18 This is a schematic diagram of the lifting mechanism;

[0051] Figure 19 This is a schematic diagram of a steel pipe receiving mechanism between the gear rolling mill and the unloading line.

[0052] Figure 20 A front view schematic diagram of a steel pipe receiving mechanism between the gear rolling mill and the unloading line;

[0053] Figure 21 A schematic diagram of a steel pipe receiving mechanism with a partial receiving tray and a discharging tray;

[0054] Figure 22 for Figure 21 Front view structural diagram;

[0055] Figure 23 A schematic diagram of the steel pipe receiving mechanism in its retracted state;

[0056] In the diagram, 100 is the steel pipe feeding assembly; 101 is the steel pipe rack; 102 is the storage area; 103 is the feeding section; 104 is the feeding lifting plate; 105 is the lifting motor; 106 is the lifting shaft; 107 is the lifting gear; 108 is the lifting rack; 109 is the lifting guide rail; 110 is the feeding shaft; 111 is the feeding block; 112 is the feeding drive cylinder; 113 is the guide arm; 114 is the lifting frame; 115 is the drive shaft; 116 is the drive sprocket; 117 is the driven sprocket; 118 is the lifting chain; 119 is the lifting plate; 200 is the steel pipe conveying mechanism; 201 is the conveying frame; 202 is the conveying roller; 203 is the conveying arm shaft; 204 is the transverse conveying arm; and 205 is the feeding guide. 206. Plate; 207. Discharge guide plate; 208. Lifting beam; 209. Lifting plate; 210. Lifting drive cylinder; 211. Transmission gear; 212. Drive motor; 213. Rotation drive cylinder; 300. Steel pipe receiving mechanism; 301. Receiving frame; 302. Receiving shaft; 303. Receiving arm; 304. Liquid receiving tray; 305. Discharge shaft; 306. Discharge arm; 307. Liquid discharging tray; 308. Receiving stop shaft; 309. Receiving stop block; 310. Support frame; 311. Material tray outlet; 312. Receiving drive cylinder; 313. Discharge drive cylinder; 314. Stop shaft drive cylinder; 400. Gear rolling mill; 401. Pre-processing module; 402. Post-processing module; 500. Unloading line. Detailed Implementation

[0057] The principles and features of the present invention are described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0058] like Figures 1-18 As shown, a steel pipe gear rolling production line includes multiple gear rolling mills 400 for rolling steel pipes, as well as a steel pipe feeding assembly 100 and a feeding line. The multiple gear rolling mills 400 and the steel pipe feeding assembly 100 are respectively arranged on both sides of the feeding line, and the gear rolling mills 400 on each side are arranged in a row.

[0059] The steel pipe feeding assembly 100 provides steel pipes to the feeding line. The steel pipe feeding assembly 100 includes a steel pipe rack 101 and a steel pipe feeding mechanism disposed on the steel pipe rack 101. The steel pipe rack 101 is provided with a storage area 102 for storing steel pipes.

[0060] The feeding line includes multiple steel pipe conveying mechanisms 200, which are connected end to end or spaced apart. Each steel pipe conveying mechanism 200 includes a conveying frame 201, multiple conveying rollers 202 rotatably mounted on the conveying frame 201, a roller drive mechanism for driving the conveying rollers 202 to rotate, a transverse conveying mechanism mounted on one or both sides of the conveying frame 201, and a lifting mechanism for lifting the steel pipes on the conveying rollers 202. The multiple conveying rollers 202 are longitudinally distributed on the conveying frame 201. The transverse conveying mechanism is used to transversely convey the steel pipes conveyed by the conveying rollers 202 to the feeding section of the post-processing module 402 of the gear rolling mill 400 to supply material to the gear rolling mill 400.

[0061] The conveyor frame 201 is provided with an infeed guiding mechanism on the side near the steel pipe feeding assembly 100 for guiding the steel pipe of the steel pipe feeding assembly 100 to the conveyor roller 202; the conveyor frame 201 is provided with an outfeed guiding mechanism on one or both sides for guiding the steel pipe lifted by the lifting mechanism to the transverse conveying mechanism.

[0062] The steel pipe feeding mechanism includes multiple feeding components and a single feeding component. The multiple feeding components include multiple feeding lifting units mounted on the steel pipe rack 101 and a lifting drive mechanism for driving the lifting units to move up and down. The steel pipe rack 101 is provided with a feeding section 103. Both the feeding section 103 and the storage area 102 are inclined. Under the action of the feeding lifting unit, multiple steel pipes can be lifted from the storage area 102 to the feeding section 103. The feeding lifting unit includes a feeding lifting plate 104. The bearing surface of the feeding lifting plate 104 is inclined with the discharge side lower and the infeed side higher.

[0063] The single-piece feeding assembly includes a feeding shaft 110 rotatably mounted on the feeding section 103, a plurality of feeding blocks 111 mounted on the feeding shaft 110, and a feeding drive mechanism for driving the feeding shaft 110 to rotate. The feeding block 111 is provided with a turning notch for turning one of the steel pipes. The storage area 102 can store multiple steel pipes, such as hundreds of steel pipes. During feeding, multiple feeding components operate, lifting and lowering once, allowing multiple steel pipes to be arranged on the feeding section 103 at once, such as 5-7 pipes. Afterward, a single feeding component operates, and the feeding block 111 rotates. The discharge side of the feeding section 103 has a guide arm 113, which rotates a steel pipe onto the guide arm 113 on the discharge side of the feeding section 103. The steel pipe can be moved to the conveying roller 202 through the feeding guide mechanism. Under the rotation of the conveying roller 202, the steel pipe can be longitudinally conveyed, and then the subsequent transverse conveying mechanism provides material for the tooth rolling mill 400 which is short of material. The steel pipe feeding assembly 100 can not only meet the storage needs of large quantities of steel pipes, but also realize the automatic feeding of single steel pipes, which can significantly improve the feeding efficiency of steel pipes without manual intervention, improve the automation level of the steel pipe gear rolling production line, and provide a stable and reliable steel pipe supply guarantee for the subsequent gear rolling process of the gear rolling mill 400.

[0064] The steel pipe feeding mechanism also includes a steel pipe lifting assembly, which is located between the single pipe feeding assembly and the feeding guide mechanism.

[0065] The steel pipe lifting assembly includes a lifting frame 114, a drive shaft 115 rotatably mounted on the lifting frame 114, a driven shaft, multiple lifting units mounted on the lifting frame 114, and a lifting drive mechanism for driving the drive shaft 115.

[0066] The lifting unit includes a drive sprocket 116, a driven sprocket 117, a lifting chain 118 surrounding the drive sprocket 116 and the driven sprocket 117, and a lifting plate 119 disposed on the lifting chain 118. The drive sprocket 116 is disposed on the drive shaft 115, and the driven sprocket 117 is disposed on the driven shaft. A single steel pipe fed by the single feeding assembly can enter the steel pipe lifting assembly for lifting. The steel pipe, propelled by the feeding block 111, can travel along the guide arm 113 to the lifting position of the lifting plate 119 of the steel pipe lifting assembly. During the upward movement of the lifting plate 119, it receives the single steel pipe rotated by the feeding block 111 and, under the action of the lifting chain 118, carries the steel pipe upward, turning it to the side of the feeding guide mechanism. The steel pipe can then enter the conveying roller 202 through the feeding guide mechanism. The lifting drive mechanism drives the drive sprocket 116 to rotate via the drive shaft 115, thereby driving the lifting chain 118 to operate, ensuring that the lifting plate 119 can stably transport the steel pipe from a low position to a high position. With the steel pipe lifting assembly, the steel pipe rack 101 does not need to be manufactured very high; the steel pipe can be completely delivered to the steel pipe conveying mechanism 200 via the steel pipe lifting assembly, facilitating the storage of steel pipes on the steel pipe rack 101 and reducing the manufacturing cost of the steel pipe rack 101.

[0067] The lifting drive mechanism includes a lifting shaft 106 and a lifting motor 105 that drives the lifting shaft 106 to rotate. A lifting rack 108 is provided on the feeding lifting plate 104. Multiple lifting gears 107 that mesh with the lifting rack 108 are provided on the lifting shaft 106. The lifting shaft 106 is rotatably mounted on the steel pipe rack 101. A lifting guide rail 109 is provided between the feeding lifting plate 104 and the steel pipe rack 101. A lifting slider adapted to the lifting guide rail 109 is provided on the feeding lifting plate 104. When the lifting motor 105 is activated, it drives the lifting shaft 106 to rotate. The lifting gears 107 rotate with the lifting shaft 106, and the lifting rack 108 meshing with the lifting gears 107 can rise and fall, thereby realizing the rising and falling movement of the feeding lifting plate 104 along the lifting guide rail 109. When the feeding lifting plate 104 rises, it can lift several steel pipes in the storage area 102 and move them upwards to a height where they can enter the feeding section 103 from the feeding lifting plate 104. The steel pipes on the feeding lifting plate 104 enter the feeding section 103. The feeding section 103 is inclined, with its discharge side lower than its infeed side. Therefore, the steel pipes move towards the discharge side, and then the feeding block 111 of the single feeding component can move the lower steel pipe to feed it.

[0068] A lifting transmission mechanism may also be provided between the lifting motor 105 and the lifting shaft 106. The lifting transmission mechanism includes a drive bevel gear and a transmission bevel gear meshing with the drive bevel gear. The drive bevel gear is located on the output shaft of the lifting drive mechanism, and the transmission bevel gear is located on the lifting shaft 106, thereby realizing the power transmission of the lifting motor 105.

[0069] The feeding drive mechanism includes a feeding drive cylinder 112, which is mounted on the feeding frame. The piston rod of the feeding drive cylinder 112 is connected to the feeding shaft 110 or the feeding block 111 via a feeding connecting rod.

[0070] The pre-processing module 401 of the gear rolling mill 400 is for conveying the mandrel. The steel pipe conveying mechanism 200 corresponding to the pre-processing module 401 of the gear rolling mill 400 may only have conveying rollers 202 to achieve longitudinal conveying of the steel pipe.

[0071] The transverse conveying mechanism includes a conveying arm shaft 203 rotatably mounted on the conveying frame 201, multiple transverse conveying arms 204 mounted on the conveying arm shaft 203, and a rotation drive mechanism for driving the conveying arm shaft 203 to rotate. The transverse conveying arms 204 extend toward the loading section of the post-processing module 402 of the gear rolling mill 400. The steel pipe is longitudinally conveyed under the action of the conveying roller 202. When it reaches the position of the gear rolling mill 400 corresponding to the required steel pipe, the lifting mechanism activates, and the steel pipe rises. Under the action of the discharge guide mechanism, the steel pipe can be smoothly guided onto the transverse conveying arm 204. The discharge end of the transverse conveying arm 204 extends toward the loading section of the post-processing module 402 of the gear rolling mill 400. Under the action of the transverse conveying arm 204, the steel pipe can smoothly move into the processing area of ​​the gear rolling mill 400, realizing the supply of steel pipes to the gear rolling mill 400 when it is short of material.

[0072] The feeding guide mechanism includes multiple feeding guide plates 205, which are arranged along the length of the conveyor frame 201. The bearing surface of the feeding guide plate 205 is inclined with the outer side higher than the inner side.

[0073] The discharge guiding mechanism includes multiple discharge guide plates 206, which are arranged along the length of the conveyor frame 201. The bearing surface of each discharge guide plate 206 is inclined with the inner side higher than the outer side. When one side of the feeding line is a steel pipe feeding assembly 100, there is an infeed guide plate 205 on that side of the conveyor frame 201. After passing through the steel pipe feeding mechanism, the steel pipe can smoothly enter the conveyor roller 202 of the feeding line through the infeed guide plate 205. When one or both sides of the feeding line are a gear mill 400, discharge guide plates 206 are provided on both sides of the feeding line. The steel pipes conveyed by the conveyor roller 202 can be laterally conveyed through the discharge guide plates 206 to the lateral conveying mechanism on the corresponding side, thereby realizing the supply of steel pipes to the gear mill 400 on the corresponding side.

[0074] The discharge guide plate 206 includes a vertical plate and an inclined plate. The vertical plate can block and limit the steel pipe during the upward process, and the inclined plate can guide the steel pipe that has risen to the correct position so that it can be smoothly moved into the transverse conveying arm 204.

[0075] The lifting mechanism includes a lifting beam 207, a plurality of lifting plates 208 disposed on the lifting beam 207, and a lifting drive cylinder 209 for driving the lifting beam 207 to move up and down. The bearing surface of the lifting plate 208 is inclined with the inner side higher than the outer side. The lifting plate 208 can lift the steel pipe and guide it to the discharge guide mechanism. The purpose of the lifting mechanism is to lift the steel pipe on the conveying roller 202 and guide it to the discharge guide mechanism to supply material to the gear rolling mill 400. Under the action of the lifting drive cylinder 209, the lifting beam 207 can move up and down. Multiple lifting plates 208 move synchronously with the lifting beam 207, which can smoothly lift the steel pipe from a low position to a high position. During the process of the steel pipe rising, the vertical plate of the discharge guide plate 206 of the discharge guide mechanism can limit the steel pipe. When the lifting plate 208 rises to the point where the steel pipe can enter the inclined plate of the corresponding discharge guide plate 206, the steel pipe is smoothly moved from the lifting plate 208 to the discharge guide plate 206 and then enters the transverse conveying arm 204 on the corresponding side. The lifting mechanism lifts the steel pipe that is conveyed longitudinally and guides it into the transverse conveying, thereby improving the conveying efficiency of the steel pipe and reducing the risk of slippage. When the gear rolling mill 400 is on one side of the feeding line, a set of lifting mechanisms is provided, which can lift the steel pipe and guide the steel pipe through the discharge guide mechanism on one side to feed the gear rolling mill 400 on that side; when there are gear rolling mills 400 on both sides of the feeding line, there are two sets of lifting mechanisms in the conveyor frame 201. One set of lifting mechanisms can lift the steel pipe and feed it to the gear rolling mill 400 on one side of the feeding line under the guidance of the discharge guide mechanism on one side, and the other set of lifting mechanisms can lift the steel pipe and feed it to the gear rolling mill 400 on the other side of the feeding line under the guidance of the discharge guide mechanism on the other side.

[0076] The conveying roller drive mechanism includes two transmission gears 210 mounted on the roller shaft of the conveying roller 202, a drive motor 211 mounted on the conveying frame 201, and a drive gear mounted on the output shaft of the drive motor 211. The drive gear is connected to one of the transmission gears 210 of one of the conveying rollers 202 via a drive chain, and the transmission gears 210 between adjacent conveying rollers 202 are connected via a drive chain. The steel pipes on the feeding line are longitudinally conveyed by the conveying rollers 202. Even with the steel pipe conveying mechanisms 200 set at intervals, the steel pipes must be stably conveyed between adjacent steel pipe conveying mechanisms 200. The power of the conveying rollers 202 is provided by the drive motor 211. When the drive motor 211 is activated, it can transmit power to one conveying roller 202 of the steel pipe conveying mechanism 200 through the drive gear and drive chain. The adjacent conveying rollers 202 can be driven by the cooperation of the transmission gear 210 and the transmission chain to realize the rotation drive of all conveying rollers 202, thereby realizing the smooth operation of the longitudinal conveying of steel pipes on the feeding line by the steel pipe conveying mechanism 200.

[0077] The rotation drive mechanism includes a rotation drive cylinder 212, the cylinder body of which is hinged to the conveyor frame 201. The piston rod of the rotation drive cylinder 212 is connected to the conveyor arm shaft 203 via a connecting arm. One end of the connecting arm is connected to the conveyor arm shaft 203, and the other end is hinged to the rotation drive cylinder 212.

[0078] The conveying roller 202 has a V-shaped roller structure. The conveying of steel pipes on the conveying roller 202 is more stable and reliable.

[0079] After the steel pipe is processed by the gear rolling mill 400, it is discharged. Since the steel pipe is cleaned in the dilution tank on the discharge side of the post-processing module 402 of the gear rolling mill 400 before being output, a steel pipe receiving mechanism 300 can be added between the post-processing module 402 of the gear rolling mill 400 and the discharge line 500 before entering the unloading line 500.

[0080] like Figures 19-23 As shown, it also includes a steel pipe receiving mechanism 300, which is correspondingly arranged on the discharge side of the post-processing module 402 of the gear rolling mill 400.

[0081] The steel pipe receiving mechanism 300 includes a receiving frame 301, a receiving assembly and a discharging assembly mounted on the receiving frame 301; the receiving assembly includes a receiving shaft 302 rotatably mounted on the receiving frame 301, a plurality of receiving arms 303 mounted on the receiving shaft 302, a liquid receiving tray 304 mounted between the receiving arms 303, and a receiving drive mechanism for driving the receiving shaft 302 to rotate;

[0082] The discharge assembly includes a discharge shaft 305 rotatably mounted on the receiving frame 301, a plurality of discharge arms 306 mounted on the discharge shaft 305, a liquid discharge plate 307 disposed between the discharge arms 306, and a discharge drive mechanism for driving the discharge shaft 305 to rotate. The liquid discharge plate 307 is located below the liquid receiving plate 304.

[0083] After the steel pipes are processed on the gear rolling mill 400, they are immersed in a dilution tank on the discharge side of the post-processing module 402 of the gear rolling mill 400 for a certain period of time for cleaning. As disclosed in Chinese invention patent CN116197186B, a cleaning device for pipe processing is used. The steel pipes coming out of the dilution tank will carry a certain amount of liquid. If they are directly discharged onto the unloading line 500 entering the workshop, liquid will drip into the workshop. Therefore, a steel pipe receiving machine is added between the discharge side of the post-processing module 402 of the gear rolling mill 400 and the unloading line 500. In structure 300, the steel pipe discharged from the dilution tank first enters the receiving arm 303. Under the action of the receiving drive mechanism, the receiving arm 303 can adjust its tilt angle so that the steel pipe can pass smoothly through the receiving arm 303 and move to the discharge arm 306. Under the action of the discharge drive mechanism, the discharge arm 306 can also adjust its tilt angle so that the steel pipe can pass smoothly through the steel pipe receiving mechanism 300. The steel pipe receiving mechanism 300 has a liquid receiving tray 304 and a liquid discharge tray 307 to collect the liquid dripping from the steel pipe and collect it in a centralized manner, which can keep the workshop floor dry and clean.

[0084] The steel pipe receiving mechanism 300 also includes a receiving blocking assembly, which includes a receiving blocking shaft 308, multiple receiving blocking blocks 309 disposed on the receiving blocking shaft 308, and a blocking shaft drive mechanism for driving the receiving blocking shaft 308 to rotate. The receiving blocking shaft 308 is rotatably disposed at the discharge end of the discharge arm 306. The receiving blocking shaft 308 can rotate under the action of the blocking shaft drive mechanism, and the receiving blocking blocks 309 can rotate with the receiving blocking shaft 308, adjusting the blocking position and angle according to actual needs. The receiving blocking assembly can block the steel pipes entering the steel pipe receiving mechanism 300, reducing the impact on the steel pipes. In addition, it can also make the liquid on the surface of the steel pipe drip onto the liquid receiving tray 304 and the liquid discharge tray 307 for easy collection. When the steel pipe needs to be discharged, the receiving blocking blocks 309 of the receiving blocking assembly can rotate down and no longer block the steel pipe, allowing the steel pipe to smoothly enter the unloading line 500, ensuring the dryness and cleanliness of the workshop floor.

[0085] The discharge shaft 305 is also provided with a support frame 310. The other end of the support frame 310 is rotatably connected to the receiving stop shaft 308. The stop shaft driving mechanism is disposed on the support frame 310, and the driving end of the stop shaft driving mechanism is connected to the receiving stop shaft 308 through the stop shaft connecting rod. The receiving stop shaft 308 is connected to the discharge shaft 305 through the support frame 310. When the discharge shaft 305 rotates, the support frame 310 can rotate with the discharge shaft 305. The provision of the support frame 310 can reduce the force on the end of the discharge arm 306.

[0086] The receiving drive mechanism includes a receiving drive cylinder 312, the piston rod of which is connected to the receiving shaft 302 via a receiving connecting rod. The discharging drive mechanism includes a discharging drive cylinder 313, which is connected to the discharging shaft 305 via a discharging connecting rod. The stop shaft drive mechanism includes a stop shaft drive cylinder 314, the cylinder body of which is mounted on the support frame 310, and the piston rod of which is connected to the receiving stop shaft 308 via a stop shaft connecting rod.

[0087] The liquid discharge tray 307 has a material tray outlet 311 on its discharge side. Liquid can be discharged and collected centrally through the material tray outlet 311, which will not pollute the workshop environment and keep the workshop floor dry and clean.

[0088] The capacity of the steel pipe gear rolling production line is not very high. Setting up five gear rolling mills 400 can meet its capacity requirements. The following layout can be adopted: arrange a row of gear rolling mills 400 on both sides of the steel pipe conveying mechanism 200, with three gear rolling mills 400 on one side and two gear rolling mills 400 on the other side. The first row has one gear rolling mill 400, which is set on one side of the steel pipe conveying mechanism 200, and the steel pipe feeding assembly 100 is set on the other side of the steel pipe conveying mechanism 200. The second and third rows each have two gear rolling mills 400 symmetrically arranged on both sides of the steel pipe conveying mechanism 200. This makes full use of the workshop space. Each row has a maximum of two gear rolling mills 400, reducing the required workshop width. The gear rolling mills 400 can be arranged on only one floor of the workshop, making the equipment and personnel safer. Moreover, the gear rolling mills 400 do not affect each other, the cycle adjustment is more flexible, and maintenance can be carried out in rotation, reducing the losses caused by equipment damage and downtime.

[0089] The storage area 102 of the steel pipe rack 101 can store multiple steel pipes. Under the action of multiple feeding components, the feeding lifting plate 104 can lift six steel pipes in the lower area of ​​the storage area 102 onto the feeding section 103. When a single feeding component is activated, the feeding block 111 rotates and pushes a steel pipe into the guide arm 113. The steel pipe moves along the guide arm 113 toward the steel pipe lifting component. When the steel pipe lifting component is activated, the lifting plate 119 is lifted upward by the lifting chain 118 and receives the steel pipe. The lifting plate 119 carries the steel pipe upward, and then the lifting plate 119... 19. The steel pipe is flipped over, and under the action of the feed guide plate 205, it moves onto the conveyor roller 202 of the conveyor frame 201. The conveyor roller 202 can realize the longitudinal conveying of the steel pipe. After the tooth rolling mill 400 that is short of material sends a signal, the conveyor roller 202 will convey the steel pipe to the corresponding position of the tooth rolling mill 400 that is short of material. The lifting mechanism on the corresponding side will act, and the lifting plate 208, in conjunction with the limit of the vertical plate of the discharge guide plate 206, will lift the steel pipe. After the steel pipe is lifted into place, it will enter the transverse conveyor arm 204 on the corresponding side along the inclined plate of the discharge guide plate 206. Under the action of 4, the steel pipe can smoothly enter the feeding section of the post-processing module 402 of the gear rolling mill 400, which is short of material, thus completing the supply of steel pipes to the gear rolling mill 400. The gear rolling mill 400 can perform gear rolling processing on the steel pipe. After the gear rolling processing is completed, the steel pipe enters the pipe processing cleaning device from the discharge side of the post-processing module 402 of the gear rolling mill 400. The pipe processing cleaning device is existing technology and will not be described in detail here. After being cleaned in the dilution tank of the pipe processing cleaning device, the steel pipe is discharged. After being discharged, the steel pipe can enter the steel pipe receiving mechanism 300. After the receiving arm 303 receives the steel pipe, the liquid on the pipe drips onto the receiving tray 304 and the discharge tray 307 during the transverse conveying process. The receiving baffle 308 on the discharge arm 306 can also block and limit the steel pipe, reducing impact. The steel pipe can stay on the steel pipe receiving mechanism 300 for a period of time, and the dripping liquid can be collected and treated centrally through the tray outlet 311. After receiving and controlling the liquid, the workshop environment is kept dry and clean, and the steel pipe can then enter the subsequent unloading line 500 through the discharge arm 306. This steel pipe gear rolling production line has a high degree of automation, reduces manual intervention, can meet the feeding needs of multiple gear rolling mills 400, improves the operating efficiency of the steel pipe gear rolling production line, and provides strong support for the company's large-scale production.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel pipe gear rolling production line, comprising multiple gear rolling mills (400) for rolling steel pipe gears, characterized in that, It also includes a steel pipe feeding assembly (100) and a feeding line. Multiple gear rolling mills (400) and the steel pipe feeding assembly (100) are respectively arranged on both sides of the feeding line. The gear rolling mills (400) on each side are arranged in a row; a row layout has a maximum of two gear rolling mills (400). The steel pipe feeding assembly (100) provides steel pipes to the feeding line. The steel pipe feeding assembly (100) includes a steel pipe rack (101) and a steel pipe feeding mechanism disposed on the steel pipe rack (101). The steel pipe rack (101) is provided with a storage area (102) for storing steel pipes. The feeding line includes multiple steel pipe conveying mechanisms (200), which are connected end to end or spaced apart. Each steel pipe conveying mechanism (200) includes a conveying frame (201), multiple conveying rollers (202) rotatably mounted on the conveying frame (201), a roller drive mechanism for driving the conveying rollers (202) to rotate, a transverse conveying mechanism mounted on one or both sides of the conveying frame (201), and a lifting mechanism for lifting the steel pipes on the conveying rollers (202). The multiple conveying rollers (202) are longitudinally distributed on the conveying frame (201). The transverse conveying mechanism is used to transversely convey the steel pipes conveyed by the conveying rollers (202) to the feeding section of the post-processing module (402) of the gear rolling mill (400) to supply material to the gear rolling mill (400). The conveyor frame (201) is provided with an infeed guide mechanism on the side near the steel pipe feeding assembly (100) for guiding the steel pipe of the steel pipe feeding assembly (100) to the conveyor roller (202); the conveyor frame (201) is provided with an outfeed guide mechanism on one or both sides for guiding the steel pipe lifted by the lifting mechanism to the transverse conveying mechanism. The transverse conveying mechanism includes a conveying arm shaft (203) rotatably mounted on the conveying frame (201), a plurality of transverse conveying arms (204) mounted on the conveying arm shaft (203), and a rotation drive mechanism for driving the conveying arm shaft (203) to rotate. The transverse conveying arms (204) extend toward the loading section of the post-processing module (402) of the gear rolling mill (400). The feeding guide mechanism includes multiple feeding guide plates (205), which are arranged along the length of the conveyor frame (201). The bearing surface of the feeding guide plate (205) is inclined with the outer side higher than the inner side. The discharging guide mechanism includes multiple discharging guide plates (206), which are arranged along the length of the conveyor frame (201). The bearing surface of the discharging guide plate (206) is inclined with the inner side higher than the outer side. The discharging guide plate (206) includes a vertical plate and an inclined plate. The vertical plate can block and limit the steel pipe during the upward process. The lifting mechanism includes a lifting beam (207), a plurality of lifting plates (208) disposed on the lifting beam (207), and a lifting drive cylinder (209) for driving the lifting beam (207) to move up and down. The bearing surface of the lifting plate (208) is inclined with the inner side higher than the outer side. The lifting plate (208) can lift the steel pipe and guide it to the discharge guide mechanism. It also includes a steel pipe receiving mechanism (300), which is correspondingly arranged on the discharge side of the post-processing module (402) of the gear rolling mill (400); the steel pipe receiving mechanism (300) includes a receiving frame (301), a receiving assembly arranged on the receiving frame (301), and a discharge assembly; the receiving assembly includes a receiving shaft (302) rotatably arranged on the receiving frame (301), a plurality of receiving arms (303) arranged on the receiving shaft (302), and a receiving arm (303) arranged on the receiving arm. The discharge assembly includes a liquid receiving tray (304) between the material arms (303) and a material receiving drive mechanism for driving the material receiving shaft (302) to rotate; the discharge assembly includes a discharge shaft (305) rotatably mounted on the material receiving frame (301), a plurality of discharge arms (306) mounted on the discharge shaft (305), a liquid discharge tray (307) between the discharge arms (306) and a discharge drive mechanism for driving the discharge shaft (305) to rotate, wherein the liquid discharge tray (307) is located below the liquid receiving tray (304); The steel pipe receiving mechanism (300) further includes a receiving blocking assembly, which includes a receiving blocking shaft (308), a plurality of receiving blocks (309) disposed on the receiving blocking shaft (308), and a blocking shaft driving mechanism for driving the receiving blocking shaft (308) to rotate. The receiving blocking shaft (308) is rotatably disposed at the discharge end of the discharge arm (306).

2. The steel pipe gear rolling production line according to claim 1, characterized in that, The steel pipe feeding mechanism includes multiple feeding components and a single feeding component. The multiple feeding components include multiple feeding lifting units set on the steel pipe rack (101) and a lifting drive mechanism for driving the feeding lifting units to lift. The steel pipe rack (101) is provided with a feeding section (103). The feeding section (103) and the storage area (102) are both inclined. Under the action of the feeding lifting unit, multiple steel pipes can be lifted from the storage area (102) to the feeding section (103). The feeding lifting unit includes a feeding lifting plate (104). The bearing surface of the feeding lifting plate (104) is inclined with the discharge side lower and the infeed side higher. The single-piece feeding assembly includes a feeding shaft (110) rotatably mounted on the feeding section (103), a plurality of feeding blocks (111) mounted on the feeding shaft (110), and a feeding drive mechanism for driving the feeding shaft (110) to rotate. The feeding block (111) is provided with a turning notch for turning one of the steel pipes.

3. The steel pipe gear rolling production line according to claim 2, characterized in that, The steel pipe feeding mechanism also includes a steel pipe lifting assembly, which is located between the single pipe feeding assembly and the feeding guide mechanism. The steel pipe lifting assembly includes a lifting frame (114), a drive shaft (115) rotatably mounted on the lifting frame (114), a driven shaft, a plurality of lifting units mounted on the lifting frame (114), and a lifting drive mechanism for driving the drive shaft (115). The lifting unit includes a drive sprocket (116), a driven sprocket (117), a lifting chain (118) surrounding the drive sprocket (116) and the driven sprocket (117), and a lifting plate (119) mounted on the lifting chain (118). The drive sprocket (116) is mounted on the drive shaft (115), and the driven sprocket (117) is mounted on the driven shaft.

4. The steel pipe gear rolling production line according to claim 2, characterized in that, The lifting drive mechanism includes a lifting shaft (106) and a lifting motor (105) that drives the lifting shaft (106) to rotate. The feeding lifting plate (104) is provided with a lifting rack (108), and the lifting shaft (106) is provided with a plurality of lifting gears (107). The lifting gears (107) can mesh with the lifting rack (108). The lifting shaft (106) is rotatably mounted on the steel pipe rack (101).

5. The steel pipe gear rolling production line according to any one of claims 1-4, characterized in that, The conveying roller drive mechanism includes two transmission gears (210) disposed on the roller shaft of the conveying roller (202), a drive motor (211) disposed on the conveying frame (201), and a drive gear disposed on the output shaft of the drive motor (211). The drive gear is connected to one of the transmission gears (210) of one of the conveying rollers (202) through a drive chain, and the transmission gears (210) between adjacent conveying rollers (202) are connected through a drive chain.

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