A seamless steel tube skew rolling apparatus and process

Abstract

The application relates to the technical field of seamless steel pipe manufacturing, and discloses a seamless steel pipe skew rolling equipment and a process, wherein the seamless steel pipe skew rolling equipment comprises a base and a PLC controller; a skew rolling mechanism, the skew rolling mechanism comprises a driving disc and an annular frame which are respectively fixed on the upper surface of the base, the inner wall of the annular frame is provided with six support frames in a circumferential array, the inner wall of each of the six support frames is rotationally provided with a roller, and the skew rolling mechanism further comprises a driving motor which is arranged on the side of the driving disc and used for driving the six rollers to rotate simultaneously. Through the arrangement of the skew rolling mechanism, the steel billet for manufacturing seamless steel pipes can be processed in a way that the six rollers are used for oblique rolling, the production efficiency of the seamless steel pipes is effectively improved, the energy consumption is reduced, the occurrence of internal defects is reduced, the quality and stability of the products are improved, the production equipment is simplified, and the maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of seamless steel pipe manufacturing technology, and more specifically, to a seamless steel pipe skew rolling equipment and process. Background Technology

[0002] Currently, the main production processes for seamless steel pipes include hot rolling, cold drawing, and piercing. While these traditional methods are widely used in industrial production, they still have limitations in terms of production efficiency, product quality, and cost control. In recent years, with the increasing market demand for high-quality seamless steel pipes, improving production efficiency, reducing energy consumption, and minimizing scrap rates have become important research topics in this field.

[0003] The existing seamless steel pipe production process is mainly cold drawing, which involves cold stretching the pre-formed pipe to obtain more precise dimensions and higher strength. The advantage is that it can achieve high precision, but the disadvantage is that the use of two pressure rollers to repeatedly cold roll a section of the steel billet results in a long production cycle and high maintenance costs, which reduces production efficiency.

[0004] Therefore, the present invention provides a seamless steel pipe skew rolling equipment and process. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] This invention provides a seamless steel pipe skew rolling mill, comprising:

[0007] Base and PLC controller;

[0008] The skew rolling mechanism is used to process a heated and rotated steel billet. The skew rolling mechanism includes a drive disk and an annular frame respectively fixed on the upper surface of the base. The inner wall of the annular frame is arranged with six support frames in a circumferential array, and the inner walls of the six support frames are rotatably equipped with rolls. The skew rolling mechanism also includes a drive motor arranged on the side of the drive disk for driving the six rolls to rotate simultaneously.

[0009] A cooling mechanism is used to cool the steel billet after skew rolling. The cooling mechanism includes a cooling water tank and an annular pipe arranged on the side of the annular frame. The inner annular surface of the annular pipe is arranged with a number of cooling nozzles in a circumferential array.

[0010] Preferably, the surface of the support frame has a through hole, and the inner wall of the through hole is fixed with a connecting shaft. Both ends of the connecting shaft are rotatably connected to the inner wall of the annular frame. The inner wall of the annular frame is rotatably provided with a hydraulic rod corresponding to the support frame, and the telescopic end of the hydraulic rod is rotatably connected to the surface of the support frame.

[0011] By adopting the above technical solution, the tilt angle of the rolls can be adjusted under the action of the hydraulic rod, thereby adjusting the spacing between the rolls.

[0012] Preferably, the drive disk has a feed port in its central area and an annular cavity inside. The inner wall of the annular cavity is provided with six connecting rods that extend to the outer surface of the drive disk in a circumferential array. The ends of the connecting rods are provided with universal couplings, and one end of the universal coupling is movably connected to a connecting rod. The other end of the universal coupling is movably connected to the end of the roll.

[0013] By adopting the above technical solution, the angle of the roll can be easily adjusted under the action of the universal coupling. At the same time, the rotation of the connecting rod can drive the roll after the angle adjustment to rotate.

[0014] Preferably, a square post is fixed to the end of the connecting rod, and a square cavity is opened at the end of the connecting rod, wherein the square post is slidably connected to the inner wall of the square cavity.

[0015] By adopting the above technical solution, under the action of the square column, the square column can extend and retract within the square cavity when the angles of the support frame and the rolls are adjusted.

[0016] Preferably, a first toothed disc is fixedly provided at one end of the connecting rod, a rotating ring is rotatably provided on the inner wall of the annular cavity, a first annular internal toothed ring and a second annular internal toothed ring are fixedly provided on the inner annular surface of the rotating ring, the six first toothed discs are all meshed with the first annular internal toothed ring, the output end of the drive motor extends into the interior of the annular cavity and is fixedly provided with a second toothed disc, the second toothed disc meshes with the second annular internal toothed ring.

[0017] By adopting the above technical solution, after the drive motor starts, it can drive the second gear disk to rotate. The rotation of the second gear disk drives the second annular inner gear ring and the rotating ring to rotate, thereby driving the first annular inner gear ring to rotate, and then driving the six first gear disks to rotate simultaneously.

[0018] Preferably, the cooling mechanism further includes a mounting plate fixed on the upper surface of the drive disc and the annular frame, and the cooling water tank is fixed on the upper surface of the mounting plate by four mounting columns. The top of the cooling water tank is provided with a water inlet pipe that communicates with an external tap water pipe, and the surface of the water inlet pipe is provided with an electromagnetic valve. The side of the cooling water tank is provided with a water delivery pipe, and one end of the water delivery pipe extends to the inner bottom of the cooling water tank, and the other end of the water delivery pipe extends into the interior of the annular pipe.

[0019] The cooling water tank is equipped with a low water level sensor and a high water level sensor. The low water level sensor, the high water level sensor, and the solenoid valve are all electrically connected to the PLC controller via wires.

[0020] By adopting the above technical solution, when the water level in the cooling water tank is lower than the position of the low water level sensor, the low water level sensor transmits a signal to the PLC controller. The PLC controller automatically controls the solenoid valve to open, allowing water from the tap water pipe to automatically flow into the cooling water tank. When the water level in the cooling water tank reaches the position of the high water level sensor, the high water level sensor transmits a signal to the PLC controller. The PLC controller automatically controls the solenoid valve to close, thereby automatically stopping the water injection and achieving the purpose of automatically replenishing the cooling water in the cooling water tank.

[0021] Preferably, a pressure box is fixedly mounted on the upper surface of the mounting plate, and a horizontal shaft is rotatably mounted on the inner walls of both sides of the pressure box. Two symmetrical reciprocating screws are fixedly mounted on the surface of the horizontal shaft. Two symmetrical rectangular plates are slidably mounted on the inner wall of the pressure box, and threaded holes that are threaded to the outer surface of the reciprocating screws are opened on the surface of both rectangular plates. Two symmetrical press-type air pumps are fixedly mounted on the inner walls of both sides of the pressure box, and the pressing ends of the two press-type air pumps are respectively fixedly connected to the surfaces of the two rectangular plates.

[0022] The press-type air pump is provided with an air inlet pipe and a pressurizing pipe at its ends. The end of the air inlet pipe extends to the outer surface of the pressurizing box and is provided with a filter cover. The surface of the air inlet pipe is provided with an air inlet one-way valve. The other end of the pressurizing pipe extends to the interior of the cooling water tank and is provided with an air outlet one-way valve on the surface of the pressurizing pipe. A return spring is fixed on the inner wall of the press-type air pump.

[0023] By adopting the above technical solution, the rotation of the rolling mill can automatically pressurize the inside of the cooling water tank during the billet processing, thereby achieving the purpose of automatic water spray cooling.

[0024] Preferably, a transmission wheel is fixed to the surface of one of the connecting rods and the cross shaft, and a transmission belt is sleeved on the surface of the two transmission wheels. An opening for transmission belt drive is provided on the lower surface of the mounting plate and the pressure box.

[0025] By adopting the above technical solution, the horizontal axis can be rotated by rotating a connecting rod.

[0026] On the other hand, this application also provides a process for a seamless steel pipe skew rolling mill, comprising the following steps:

[0027] S1: Conveys the preheated steel billet, which then passes through the feed port and enters the interior of the annular frame;

[0028] S2: Start the drive motor. The rotation of the drive motor drives the second gear disk to rotate. The rotation of the second gear disk drives the rotating ring to rotate under the action of the second annular internal gear ring. The rotation of the rotating ring drives the first annular internal gear ring to rotate. The rotation of the first annular internal gear ring drives the six first gear disks to rotate simultaneously. The rotation of the first gear disk drives the connecting rod to rotate. The rotation of the connecting rod drives the connecting rod to rotate through the square column. The rotation of the connecting rod drives the roller to rotate through the universal coupling, thereby driving the six rollers to rotate simultaneously to roll the steel billet during the conveying process.

[0029] S3: Cooling and cooling down, automatically cooling down the steel billet after it has passed through six rolls.

[0030] The beneficial effects of this invention are as follows:

[0031] The present invention discloses a seamless steel pipe skew rolling equipment and process. By setting up a skew rolling mechanism, the equipment can process the steel billet for manufacturing seamless steel pipes by using a six-roll skew rolling method, thereby effectively improving the production efficiency of seamless steel pipes, reducing energy consumption, reducing the occurrence of internal defects, improving product quality and stability, and simplifying production equipment and reducing maintenance costs.

[0032] The seamless steel pipe skew rolling equipment and process described in this invention, by setting up a cooling mechanism, can continuously press the press-type air pump during the rotation of a connecting rod, so that the press-type air pump can continuously pressurize the inside of the cooling water tank through the pressurization pipe, thereby causing the cooling water in the cooling water tank to enter the annular pipe through the water delivery pipe, and then be sprayed out through several cooling nozzles to effectively cool the steel billet. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0034] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0035] Figure 3 This is a side view of the structure of the present invention;

[0036] Figure 4 This is a schematic diagram of the internal structure of the drive disk of the present invention;

[0037] Figure 5 This is a schematic diagram of the cross-sectional structure of the present invention;

[0038] Figure 6 This is the present invention. Figure 5 Enlarged structural diagram at point A in the middle;

[0039] Figure 7 This is the present invention. Figure 5Enlarged structural diagram at point B.

[0040] In the picture:

[0041] 100. Base;

[0042] 200. Inclined rolling mechanism; 201. Drive disc; 202. Annular frame; 203. Support frame; 204. Roll; 205. Drive motor; 206. Connecting shaft; 207. Hydraulic rod; 208. Connecting rod; 209. Universal coupling; 2010. Connecting rod; 2011. Square column; 2012. First gear disc; 2013. Rotating ring; 2014. First annular internal gear ring; 2015. Second annular internal gear ring; 2016. Second gear disc;

[0043] 300. Cooling mechanism; 301. Cooling water tank; 302. Annular pipe; 303. Cooling nozzle; 304. Mounting plate; 305. Water inlet pipe; 306. Solenoid valve; 307. Water supply pipe; 308. Low water level sensor; 309. High water level sensor; 3010. Pressurization box; 3011. Horizontal shaft; 3012. Reciprocating lead screw; 3013. Rectangular plate; 3014. Press-type air pump; 3015. Air inlet pipe; 3016. Pressurization pipe; 3017. Air inlet check valve; 3018. Air outlet check valve; 3019. Return spring; 3020. Drive wheel; 3021. Drive belt. Detailed Implementation

[0044] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0045] Example 1

[0046] like Figures 1 to 7 As shown in the figure, a seamless steel pipe skew rolling mill according to an embodiment of the present invention is described in detail below. Figure 1 , Figure 2 , Figure 4 , Figure 5The system includes: a base 100 and a PLC controller; a skew rolling mechanism 200, which is used to process the heated and rotated steel billet. The skew rolling mechanism 200 includes a drive disk 201 and an annular frame 202 respectively fixed on the upper surface of the base 100. The inner wall of the annular frame 202 is provided with six support frames 203 arranged in a circumferential array, and the inner walls of the six support frames 203 are rotatably provided with rollers 204. The skew rolling mechanism 200 also includes a drive motor 205 provided on the side of the drive disk 201 for driving the six rollers 204 to rotate simultaneously.

[0047] Please refer to this carefully. Figure 3 , Figure 4 The support frame 203 has a through hole on its surface, and a connecting shaft 206 is fixed on the inner wall of the through hole. Both ends of the connecting shaft 206 are rotatably connected to the inner wall of the annular frame 202. The inner wall of the annular frame 202 is rotatably provided with a hydraulic rod 207 corresponding to the support frame 203, and the telescopic end of the hydraulic rod 207 is rotatably connected to the surface of the support frame 203.

[0048] Specifically, by adopting the above technical solution, the tilt angle of the roll 204 can be adjusted under the action of the hydraulic rod 207, thereby adjusting the spacing between each roll 204.

[0049] Please refer to this carefully. Figure 5 , Figure 6 The drive disk 201 has a material feed port in its central area and an annular cavity inside. The inner wall of the annular cavity is arranged in a circumferential array with six connecting rods 208 extending to the outer surface of the drive disk 201. A universal coupling 209 is provided at the end of the connecting rod 208. One end of the universal coupling 209 is movably connected to a connecting rod 2010, and the other end of the universal coupling 209 is movably connected to the end of the roll 204.

[0050] Specifically, by adopting the above technical solution, the angle of the roll 204 can be easily adjusted under the action of the universal coupling 209. At the same time, the rotation of the connecting rod 208 can drive the angle-adjusted roll 204 to rotate.

[0051] Please refer to section 6 for details. A square post 2011 is fixed at the end of the connecting rod 2010, and a square cavity is opened at the end of the connecting rod 208. The square post 2011 is slidably connected to the inner wall of the square cavity.

[0052] Specifically, by adopting the above technical solution, under the action of the square column 2011, when the angles of the support frame 203 and the roll 204 are adjusted, the square column 2011 can extend and retract within the square cavity.

[0053] Please refer to this carefully. Figure 4 , Figure 5One end of the connecting rod 208 is fixed with a first toothed disc 2012. A rotating ring 2013 is rotatably provided on the inner wall of the annular cavity. A first annular internal toothed ring 2014 and a second annular internal toothed ring 2015 are fixed on the inner annular surface of the rotating ring 2013 respectively. All six first toothed discs 2012 mesh with the first annular internal toothed ring 2014. The output end of the drive motor 205 extends into the interior of the annular cavity and is fixed with a second toothed disc 2016. The second toothed disc 2016 meshes with the second annular internal toothed ring 2015.

[0054] Specifically, by adopting the above technical solution, after the drive motor 205 starts, it can drive the second gear disk 2016 to rotate. The rotation of the second gear disk 2016 drives the second annular inner gear ring 2015 and the rotating ring 2013 to rotate, thereby driving the first annular inner gear ring 2014 to rotate, and then driving the six first gear disks 2012 to rotate simultaneously.

[0055] In this embodiment, a skew rolling mechanism 200 is provided, which enables the equipment to process the steel billet for manufacturing seamless steel pipes by using six rolls 204 to roll the billet at an angle. This effectively improves the production efficiency of seamless steel pipes, reduces energy consumption, reduces the occurrence of internal defects, improves product quality and stability, simplifies production equipment, and reduces maintenance costs.

[0056] Example 2

[0057] Please refer to this carefully. Figure 3 , Figure 5 , Figure 6 , Figure 7 Based on Example 1, but differing from Example 1 in the following ways:

[0058] Please refer to this carefully. Figure 5 A seamless steel pipe skew rolling equipment further includes a cooling mechanism 300 for cooling the steel billet after skew rolling. The cooling mechanism 300 includes a cooling water tank 301 and an annular pipe 302 disposed on the side of an annular frame 202. The inner annular surface of the annular pipe 302 is arranged in a circumferential array with a plurality of cooling nozzles 303.

[0059] Please refer to this carefully. Figure 5 , Figure 7The cooling mechanism 300 also includes a mounting plate 304 fixed on the upper surface of the drive plate 201 and the annular frame 202, and the cooling water tank 301 is fixed on the upper surface of the mounting plate 304 by four mounting columns. The top of the cooling water tank 301 is provided with a water inlet pipe 305 that is connected to an external tap water pipe, and a solenoid valve 306 is provided on the surface of the water inlet pipe 305. A water delivery pipe 307 is provided on the side of the cooling water tank 301, and one end of the water delivery pipe 307 extends to the inner bottom of the cooling water tank 301, and the other end of the water delivery pipe 307 extends into the interior of the annular pipe 302. A low water level sensor 308 and a high water level sensor 309 are provided inside the cooling water tank 301. The low water level sensor 308, the high water level sensor 309 and the solenoid valve 306 are all electrically connected to the PLC controller through wires.

[0060] Specifically, by adopting the above technical solution, when the water level in the cooling water tank 301 is lower than the position of the low water level sensor 308, the low water level sensor 308 transmits a signal to the PLC controller. The PLC controller automatically controls the solenoid valve 306 to open, so that water from the tap water pipe can be automatically injected into the cooling water tank 301. When the liquid level in the cooling water tank 301 reaches the position of the high water level sensor 309, the high water level sensor 309 transmits a signal to the PLC controller. The PLC controller automatically controls the solenoid valve 306 to close, thereby achieving the purpose of automatically stopping water injection and thus achieving the purpose of automatically replenishing the cooling water in the cooling water tank 301.

[0061] Please refer to this carefully. Figure 5 , Figure 6 , Figure 7 A pressure box 3010 is fixedly mounted on the upper surface of the mounting plate 304. A horizontal shaft 3011 is rotatably mounted on the inner walls of both sides of the pressure box 3010. Two symmetrical reciprocating screws 3012 are fixedly mounted on the surface of the horizontal shaft 3011. Two symmetrical rectangular plates 3013 are slidably mounted on the inner wall of the pressure box 3010. Each of the two rectangular plates 3013 has threaded holes that connect with the outer surface of the reciprocating screws 3012. Two symmetrical push-type air pumps 3014 are fixedly mounted on the inner walls of both sides of the pressure box 3010. The push-type air pumps 3014... The pressure end is fixedly connected to the surfaces of the two rectangular plates 3013 respectively; the ends of the press-type air pump 3014 are respectively provided with an air inlet pipe 3015 and a pressurizing pipe 3016, and the end of the air inlet pipe 3015 extends to the outer surface of the pressurizing box 3010 and is provided with a filter cover. The surface of the air inlet pipe 3015 is provided with an air inlet one-way valve 3017. The other end of the pressurizing pipe 3016 extends to the interior of the cooling water tank 301, and the surface of the pressurizing pipe 3016 is provided with an air outlet one-way valve 3018. The inner wall of the press-type air pump 3014 is fixedly provided with a return spring 3019.

[0062] Specifically, by adopting the above technical solution, the rotation of the rolling mill 204 can achieve the purpose of automatically pressurizing the interior of the cooling water tank 301 during the billet processing, thereby achieving the purpose of automatic water spraying cooling.

[0063] Please refer to this carefully. Figure 6 A drive wheel 3020 is fixed on the surface of a connecting rod 208 and a horizontal shaft 3011, and a drive belt 3021 is sleeved on the surface of the two drive wheels 3020. An opening for the drive belt 3021 to drive is opened on the lower surface of the mounting plate 304 and the pressure box 3010.

[0064] Specifically, by adopting the above technical solution, the horizontal shaft 3011 can be rotated by rotating a connecting rod 208.

[0065] In this embodiment, by setting a cooling mechanism 300, the press-type air pump 3014 can be continuously pressed during the rotation of a connecting rod 208, so that the cooling water in the cooling water tank 301 enters the annular pipe 302 through the water supply pipe 307, and is sprayed out through several cooling nozzles 303 to effectively cool the steel billet.

[0066] On the other hand, this application embodiment also provides a process for a seamless steel pipe skew rolling mill according to the above description, including the following steps:

[0067] S1: Convey the preheated steel billet and allow it to pass through the feed port and enter the interior of the annular frame 202;

[0068] S2: Start the drive motor 205. The rotation of the drive motor 205 drives the second gear disk 2016 to rotate. The rotation of the second gear disk 2016, under the action of the second annular internal gear ring 2015, drives the rotating ring 2013 to rotate. The rotation of the rotating ring 2013 drives the first annular internal gear ring 2014 to rotate. The rotation of the first annular internal gear ring 2014 drives the six first gear disks 2012 to rotate simultaneously. The rotation of the first gear disks 2012 drives the connecting rod 208 to rotate. The rotation of the connecting rod 208 drives the connecting rod 2010 to rotate through the square column 2011. The rotation of the connecting rod 2010 drives the roller 204 to rotate through the universal coupling 209, thereby driving the six rollers 204 to rotate simultaneously, and rolling the steel billet in the conveying process.

[0069] S3: Cooling and cooling down, automatically cooling down the steel billet after it has passed through six 204 rolling mills.

[0070] Working principle

[0071] When processing steel billets for seamless steel pipe manufacturing, this equipment uses a conveying mechanism to pass the heated steel billet through the feed port and into the interior of the annular frame 202. Simultaneously, the drive motor 205 is activated. The rotation of the drive motor 205 drives the second gear disc 2016 to rotate. The rotation of the second gear disc 2016, under the action of the second annular inner gear ring 2015, drives the rotating ring 2013 to rotate. The rotation of the rotating ring 2013 drives the first annular inner gear ring 2014 to rotate. The rotation of the first annular inner gear ring 2014 drives the six first gear discs 2012 to rotate simultaneously. The rotation of the first gear discs 2012 drives the connecting rod 208 to rotate. The rotation of the connecting rod 208, through the square column 2011, drives the connecting rod 2010 to rotate. The rotation of the connecting rod 2010, through the universal coupling 209, drives the rollers 204 to rotate, thereby driving the six rollers 204 to rotate simultaneously, rolling the steel billet during the conveying process. This invention employs six rollers 204 at an inclined rolling angle... The steel billet is processed by pressing, which effectively improves the production efficiency of seamless steel pipes, reduces energy consumption, reduces the occurrence of internal defects, and improves product quality and stability. At the same time, it simplifies production equipment and reduces maintenance costs. Moreover, during the rotation of a connecting rod 208, the horizontal shaft 3011 is driven to rotate under the action of two transmission wheels 3020 and transmission belt 3021. The rotation of the horizontal shaft 3011 drives two reciprocating screws 3012 to rotate. The rotation of the reciprocating screws 3012 drives the rectangular plate 3013 to move back and forth on the inner wall of the pressure box 3010, thereby achieving the purpose of continuously pressing the press-type air pump 3014. The press-type air pump 3014 can continuously pressurize the interior of the cooling water tank 301 through the pressurization pipe 3016, so that the cooling water in the cooling water tank 301 enters the annular pipe 302 through the water supply pipe 307 and is sprayed out through several cooling nozzles 303 to effectively cool the steel billet.

[0072] The embodiments of this specific implementation have been described above. However, this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. A seamless steel pipe skew rolling mill, characterized in that, include: Base and PLC controller; The skew rolling mechanism is used to process a heated and rotated steel billet. The skew rolling mechanism includes a drive disk and an annular frame respectively fixed on the upper surface of the base. The inner wall of the annular frame is arranged with six support frames in a circumferential array, and the inner walls of the six support frames are rotatably equipped with rolls. The skew rolling mechanism also includes a drive motor arranged on the side of the drive disk for driving the six rolls to rotate simultaneously. The cooling mechanism is used to cool the steel billet after skew rolling. The cooling mechanism includes a cooling water tank and an annular pipe set on the side of the annular frame. The inner annular surface of the annular pipe is arranged in a circumferential array with several cooling nozzles. The surface of the support frame has a through hole, and the inner wall of the through hole is fixed with a connecting shaft. Both ends of the connecting shaft are rotatably connected to the inner wall of the annular frame. The inner wall of the annular frame is rotatably equipped with a hydraulic rod corresponding to the support frame, and the telescopic end of the hydraulic rod is rotatably connected to the surface of the support frame. The drive disk has a feed port in the center area and an annular cavity inside. The inner wall of the annular cavity is arranged in a circumferential array with six connecting rods extending to the outer surface of the drive disk. The ends of the connecting rods are equipped with universal couplings, and one end of the universal coupling is movably connected to a connecting rod. The other end of the universal coupling is movably connected to the end of the roll. One end of the connecting rod is fixed with a first toothed disc, and a rotating ring is rotatably provided on the inner wall of the annular cavity. The inner ring surface of the rotating ring is fixed with a first annular internal toothed ring and a second annular internal toothed ring respectively. All six first toothed discs mesh with the first annular internal toothed ring. The output end of the drive motor extends into the interior of the annular cavity and is fixed with a second toothed disc. The second toothed disc meshes with the second annular internal toothed ring. The cooling mechanism also includes a mounting plate fixed to the upper surface of the drive disc and the annular frame; A pressure box is fixedly mounted on the upper surface of the mounting plate, and a horizontal shaft is rotatably mounted on the inner walls of both sides of the pressure box. Two symmetrical reciprocating screws are fixedly mounted on the surface of the horizontal shaft. Two symmetrical rectangular plates are slidably mounted on the inner wall of the pressure box, and threaded holes that are threaded to the outer surface of the reciprocating screws are opened on the surface of both rectangular plates. Two symmetrical press-type air pumps are fixedly mounted on the inner walls of both sides of the pressure box, and the pressing ends of the two press-type air pumps are fixedly connected to the surfaces of the two rectangular plates respectively. The press-type air pump is equipped with an air inlet pipe and a pressurization pipe at its ends, with the other end of the pressurization pipe extending into the interior of the cooling water tank. A drive wheel is fixed to the surface of both the connecting rod and the horizontal shaft, and a drive belt is fitted onto the surface of both drive wheels.

2. The seamless steel pipe skew rolling equipment according to claim 1, characterized in that, The end of the connecting rod is fixed with a square post, and the end of the connecting rod is provided with a square cavity, wherein the square post is slidably connected to the inner wall of the square cavity.

3. The seamless steel pipe skew rolling equipment according to claim 1, characterized in that, The cooling water tank is fixed to the upper surface of the mounting plate by four mounting columns. The top of the cooling water tank is provided with an inlet pipe that connects to an external tap water pipe, and the surface of the inlet pipe is provided with an electromagnetic valve. The side of the cooling water tank is provided with a water delivery pipe, one end of which extends to the bottom of the cooling water tank and the other end of which extends into the inside of the annular pipe. The cooling water tank is equipped with a low water level sensor and a high water level sensor. The low water level sensor, the high water level sensor, and the solenoid valve are all electrically connected to the PLC controller via wires.

4. The seamless steel pipe skew rolling equipment according to claim 3, characterized in that, The end of the air inlet pipe extends to the outer surface of the pressurization box and is provided with a filter cover. The surface of the air inlet pipe is provided with an air inlet one-way valve, and the surface of the pressurization pipe is provided with an air outlet one-way valve. The inner wall of the press-type air pump is fixed with a return spring.

5. A seamless steel pipe skew rolling mill according to claim 4, characterized in that, Both the mounting plate and the pressure box have openings on their lower surfaces for belt drive.

6. A seamless steel pipe skew rolling process, comprising the process of a seamless steel pipe skew rolling equipment according to any one of claims 1-5, characterized in that, Includes the following steps: S1: Conveys the preheated steel billet, which then passes through the feed port and enters the interior of the annular frame; S2: Start the drive motor. The rotation of the drive motor drives the second gear disk to rotate. The rotation of the second gear disk drives the rotating ring to rotate under the action of the second annular internal gear ring. The rotation of the rotating ring drives the first annular internal gear ring to rotate. The rotation of the first annular internal gear ring drives the six first gear disks to rotate simultaneously. The rotation of the first gear disk drives the connecting rod to rotate. The rotation of the connecting rod drives the connecting rod to rotate through the square column. The rotation of the connecting rod drives the roller to rotate through the universal coupling, thereby driving the six rollers to rotate simultaneously to roll the steel billet during the conveying process. S3: Cooling and cooling down, automatically cooling down the steel billet after it has passed through six rolls.

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