Seamless steel tube skew rolling equipment and process

Abstract

The invention relates to the technical field of seamless steel tube manufacturing, and discloses a seamless steel tube skew rolling device and a seamless steel tube skew rolling process, the seamless steel tube skew rolling device comprises a base and a PLC controller; the skew rolling mechanism comprises a driving disc and an annular frame which are fixedly arranged on the upper surface of the base, six supporting frames are arranged on the inner wall of the annular frame in a circumferential array mode, and rollers are rotationally arranged on the inner walls of the six supporting frames; the skew rolling mechanism further comprises a driving motor arranged on the side face of the driving disc and used for driving the six rollers to rotate at the same time. By arranging the skew rolling mechanism, steel billets can be processed by adopting a mode of skew rolling of six rollers when the equipment is used for processing the steel billets for manufacturing seamless steel pipes, so that the production efficiency of the seamless steel pipes is effectively improved, the energy consumption is reduced, the occurrence of internal defects is reduced, and the quality and the stability of products are improved; meanwhile, production equipment is simplified, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of seamless steel pipe manufacturing, and more specifically, to a seamless steel pipe oblique rolling device and process. Background Art

[0002] At present, the production process of seamless steel pipes mainly includes hot rolling, cold drawing and perforation. Although these traditional methods have been widely used in industrial production, they still have certain limitations in production efficiency, product quality and cost control. In recent years, with the increasing market demand for high-quality seamless steel pipes, how to improve production efficiency, reduce energy consumption and reduce scrap rate has become an important research topic in this field.

[0003] The existing seamless steel pipe production process is mainly cold drawing, that is, cold stretching the initially formed pipe to obtain more precise size and higher strength. The advantage is that high precision can be achieved, but the disadvantage is that two rollers are used to reciprocate and cold roll a section of the steel billet, resulting in a long production cycle and high maintenance costs, which reduces production efficiency.

[0004] To this end, the present invention provides a seamless steel pipe oblique rolling device and process. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The present invention provides a seamless steel pipe cross-rolling device, comprising: Base and PLC controller; An oblique rolling mechanism, which is used to process the steel billet that is transported and rotated after heating, and the oblique rolling mechanism includes a driving disk and an annular frame 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, and the inner walls of the six support frames are all rotatably provided with rollers, and the oblique rolling mechanism also includes a driving motor arranged on the side of the driving disk for driving the six rollers to rotate simultaneously; The cooling mechanism is used to cool the steel billet after oblique rolling. The cooling mechanism includes a cooling water tank and an annular tube arranged on the side of the annular frame, and the inner ring surface of the annular tube is provided with a plurality of cooling nozzles in a circular array.

[0007] Preferably, a through hole is opened on the surface of the support frame, and a connecting shaft is fixedly provided on the inner wall of the through hole, both ends of the connecting shaft are rotatably connected to the inner wall of the annular frame, and a hydraulic rod corresponding to the support frame is rotatably provided on the inner wall of the annular frame, and the telescopic end of the hydraulic rod is rotatably connected to the surface of the support frame.

[0008] By adopting the above technical solution, the inclination angle of the roller can be adjusted under the action of the hydraulic rod, so that the distance between each roller can be adjusted.

[0009] Preferably, a material delivery port is provided in the central area of ​​the driving disk, and an annular cavity is provided inside the driving disk, and six connecting rods extending to the outer surface of the driving disk are rotatably arranged on the inner wall of the annular cavity in a circular array, and a universal coupling is provided at the end of the connecting rod, and one end of the universal coupling is movably connected to a connecting rod, and the other end of the universal coupling is movably connected to the end of the roller.

[0010] By adopting the above technical solution, the angle of the roller can be adjusted conveniently under the action of the universal coupling, and at the same time, the roller after the angle adjustment can be driven to rotate by the rotation of the connecting rod.

[0011] Preferably, a square column is fixedly provided at the end of the connecting rod, and a square cavity is opened at the end of the connecting rod, and the square column is slidably connected to the inner wall of the square cavity.

[0012] By adopting the above technical solution, under the action of the square column, when the angles of the support frame and the roller are adjusted, the square column can be extended and retracted in the square cavity.

[0013] 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 inner toothed ring and a second annular inner toothed ring are respectively fixedly provided on the inner ring surface of the rotating ring, and the six first toothed discs are all meshed with the first annular inner toothed ring, and the output end of the driving motor extends to the interior of the annular cavity and is fixedly provided with a second toothed disc, and the second toothed disc is meshed with the second annular inner toothed ring.

[0014] By adopting the above technical solution, after the drive motor is started, the second gear disc can be driven to rotate, and the rotation of the second gear disc 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 discs to rotate simultaneously.

[0015] Preferably, the cooling mechanism further comprises a mounting plate fixedly mounted on the upper surface of the driving disk and the annular frame, and the cooling water tank is fixedly mounted on the upper surface of the mounting plate through four mounting columns, a water inlet pipe connected to an external tap water pipe is arranged on the top of the cooling water tank, and an electromagnetic valve is arranged on the surface of the water inlet pipe, a water delivery pipe is arranged on the side of the cooling water tank, 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 to the inside of the annular pipe; A low water level sensor and a high water level sensor are arranged inside the cooling water tank, and the low water level sensor, the high water level sensor and the electromagnetic valve are all electrically connected to the PLC controller through wires.

[0016] By adopting the above technical scheme, 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, and the PLC controller automatically controls the solenoid valve to open, so that the water in the tap pipe can be automatically injected into the cooling water tank. When the liquid 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, and the PLC controller automatically controls the solenoid valve to close, thereby achieving the purpose of automatically stopping water injection, and then achieving the purpose of automatically replenishing the cooling water in the cooling water tank.

[0017] Preferably, a pressurizing box is fixedly arranged on the upper surface of the mounting plate, and a horizontal axis is rotatably arranged on the inner walls on both sides of the pressurizing box, and two symmetrical reciprocating screws are fixedly arranged on the surface of the horizontal axis, and two symmetrical rectangular plates are slidably arranged on the inner wall of the pressurizing box, and threaded holes threadedly connected to the outer surface of the reciprocating screw are opened on the surfaces of the two rectangular plates, and two symmetrical push-type air pumps are fixedly arranged on the inner walls on both sides of the pressurizing box, and the pressing ends of the two push-type air pumps are respectively fixedly connected to the surfaces of the two rectangular plates; An air intake pipe and a pressurizing pipe are respectively provided at the ends of the push-type air pump, and the end of the air intake pipe extends to the outer surface of the pressurizing box and is provided with a filter cover, an air intake one-way valve is provided on the surface of the air intake pipe, the other end of the pressurizing pipe extends to the interior of the cooling water tank, and an air outlet one-way valve is provided on the surface of the pressurizing pipe, and a return spring is fixedly provided on the inner wall of the push-type air pump.

[0018] By adopting the above technical solution, the purpose of automatically pressurizing the interior of the cooling water tank during the processing of the steel billet can be achieved through the rotation of the rolling rollers, thereby achieving the purpose of automatic water spray cooling.

[0019] Preferably, a transmission wheel is fixedly provided on the surface of one of the connecting rods and the transverse axis, and a transmission belt is sleeved on the surface of the two transmission wheels, and openings for transmission by the transmission belt are opened on the lower surfaces of the mounting plate and the pressurizing box.

[0020] By adopting the above technical solution, the horizontal axis can be driven to rotate by the rotation of a connecting rod.

[0021] On the other hand, the present application also provides a process for a seamless steel pipe cross-rolling device, comprising the following steps: S1: convey the preheated billet and pass through the feeding port into the inner part of the annular frame; S2: Start the driving motor. The rotation of the driving motor drives the second gear disc to rotate. The rotation of the second gear disc drives the rotating ring to rotate under the action of the second annular inner gear ring. The rotation of the rotating ring drives the first annular inner gear ring to rotate. The rotation of the first annular inner gear ring drives the six first gear discs to rotate simultaneously. The rotation of the first gear disc 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, and rolling the steel billet in the conveying process; S3: Cooling, automatically cooling the steel billet after it has passed through the six rollers.

[0022] The beneficial effects of the present invention are: The present invention discloses a kind of seamless steel pipe oblique rolling equipment and process, by setting up an oblique rolling mechanism, so that when the equipment processes the steel billet for manufacturing the seamless steel pipe, it can adopt the method of inclined rolling of six rollers to process the steel billet, thereby effectively improving the production efficiency of the seamless steel pipe, reducing energy consumption, reducing the occurrence of internal defects, improving the quality and stability of the product, and at the same time simplifying the production equipment and reducing the maintenance cost.

[0023] The seamless steel pipe oblique rolling equipment and process described in the present invention, by setting a cooling mechanism, can achieve the purpose of continuously pressing the push-type air pump during the rotation of a connecting rod, so that the push-type air pump can continuously pressurize the interior of the cooling water tank through the pressure pipe, so that the cooling water in the cooling water tank enters the annular pipe through the water pipe, and is sprayed out through a number of cooling nozzles to effectively cool the steel billet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the internal structure of the drive disk of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 6 The present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 The present invention Figure 5 Enlarged structural diagram at B in the middle.

[0025] In the figure: 100, base; 200, oblique rolling mechanism; 201, driving plate; 202, annular frame; 203, support frame; 204, rolling roller; 205, driving motor; 206, connecting shaft; 207, hydraulic rod; 208, connecting rod; 209, universal coupling; 2010, connecting rod; 2011, square column; 2012, first toothed plate; 2013, rotating ring; 2014, first annular inner toothed ring; 2015, second annular inner toothed ring; 2016, second toothed plate; 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 pipe; 308. Low water level sensor; 309. High water level sensor; 3010. Pressurizing box; 3011. Horizontal axis; 3012. Reciprocating screw; 3013. Rectangular plate; 3014. Push-type air pump; 3015. Inlet pipe; 3016. Pressurizing pipe; 3017. Inlet check valve; 3018. Exhaust check valve; 3019. Return spring; 3020. Transmission wheel; 3021. Transmission belt. DETAILED DESCRIPTION

[0026] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0027] Embodiment 1 like Figures 1 to 7 As shown, a seamless steel pipe oblique rolling device according to an embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , including: a base 100 and a PLC controller; an oblique rolling mechanism 200, which is used to process the steel billet that is transported and rotated after heating, and the oblique rolling mechanism 200 includes a driving disk 201 and an annular frame 202 respectively fixed on the upper surface of the base 100, and the inner wall of the annular frame 202 is provided with six support frames 203 in a circumferential array, and the inner walls of the six support frames 203 are all rotatably provided with rollers 204, and the oblique rolling mechanism 200 also includes a driving motor 205 arranged on the side of the driving disk 201 for driving the six rollers 204 to rotate simultaneously; Please refer to Figure 3 , Figure 4A through hole is opened on the surface of the support frame 203, and a connecting shaft 206 is fixedly provided 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. A hydraulic rod 207 corresponding to the support frame 203 is rotatably provided on the inner wall of the annular frame 202, and the telescopic end of the hydraulic rod 207 is rotatably connected to the surface of the support frame 203.

[0028] Specifically, by adopting the above technical solution, the inclination angle of the roller 204 can be adjusted under the action of the hydraulic rod 207, so that the distance between each roller 204 can be adjusted.

[0029] Please refer to Figure 5 , Figure 6 A material outlet is provided in the central area of ​​the driving disk 201, and an annular cavity is provided inside the driving disk 201. Six connecting rods 208 extending to the outer surface of the driving disk 201 are arranged on the inner wall of the annular cavity in a circular array, and 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 roller 204.

[0030] Specifically, by adopting the above technical solution, the angle of the roller 204 can be adjusted easily under the action of the universal coupling 209, and at the same time, the roller 204 after the angle adjustment can be driven to rotate by the rotation of the connecting rod 208.

[0031] Please refer to 6 in particular, a square column 2011 is fixedly provided at the end of the connecting rod 2010, and a square cavity is opened at the end of the connecting rod 208, and the square column 2011 is slidably connected to the inner wall of the square cavity.

[0032] 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 roller 204 are adjusted, the square column 2011 can be extended and retracted in the square cavity.

[0033] Please refer to Figure 4 , Figure 5 A first toothed disc 2012 is fixedly provided at one end of the connecting rod 208, a rotating ring 2013 is rotatably provided on the inner wall of the annular cavity, a first annular inner toothed ring 2014 and a second annular inner toothed ring 2015 are fixedly provided on the inner ring surface of the rotating ring 2013, and the six first toothed discs 2012 are all meshed with the first annular inner toothed ring 2014, and the output end of the driving motor 205 extends to the inside of the annular cavity and is fixedly provided with a second toothed disc 2016, and the second toothed disc 2016 is meshed with the second annular inner toothed ring 2015.

[0034] Specifically, by adopting the above technical solution, after the driving motor 205 is started, the second toothed disc 2016 can be driven to rotate, and the rotation of the second toothed disc 2016 drives the second annular inner toothed ring 2015 and the rotating ring 2013 to rotate, thereby driving the first annular inner toothed ring 2014 to rotate, and then driving the six first toothed discs 2012 to rotate simultaneously.

[0035] In this embodiment, an oblique rolling mechanism 200 is provided so that when the equipment processes the steel billet for manufacturing seamless steel pipes, the steel billet can be processed by using six rolling rollers 204 for oblique rolling, thereby effectively improving the production efficiency of the seamless steel pipe, reducing energy consumption, reducing the occurrence of internal defects, and improving the quality and stability of the product, while simplifying the production equipment and reducing maintenance costs.

[0036] Embodiment 2 Please refer to Figure 3 , Figure 5 , Figure 6 , Figure 7 , based on the first embodiment, and different from the first embodiment: Please refer to Figure 5 A seamless steel pipe oblique rolling equipment also includes: a cooling mechanism 300, which is used to cool the steel billet after oblique rolling. The cooling mechanism 300 includes a cooling water tank 301 and an annular tube 302 arranged on the side of the annular frame 202, and the inner ring surface of the annular tube 302 is provided with a plurality of cooling nozzles 303 in a circular array.

[0037] Please refer to Figure 5 , Figure 7 The cooling mechanism 300 also includes a mounting plate 304 fixed on the upper surface of the driving disk 201 and the annular frame 202, and the cooling water tank 301 is fixed on the upper surface of the mounting plate 304 through four mounting columns, a water inlet pipe 305 connected to an external tap water pipe is arranged on the top of the cooling water tank 301, and an electromagnetic valve 306 is arranged on the surface of the water inlet pipe 305, a water delivery pipe 307 is arranged 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 to the inside of the annular pipe 302; a low water level sensor 308 and a high water level sensor 309 are arranged inside the cooling water tank 301, and the low water level sensor 308, the high water level sensor 309 and the electromagnetic valve 306 are all electrically connected to the PLC controller through wires.

[0038] Specifically, by adopting the above-mentioned technical scheme, 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, and the PLC controller automatically controls the solenoid valve 306 to open, so that the water in 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, and the PLC controller automatically controls the solenoid valve 306 to close, thereby achieving the purpose of automatically stopping water injection, and then achieving the purpose of automatically replenishing the cooling water in the cooling water tank 301.

[0039] Please refer to Figure 5 , Figure 6 , Figure 7 The upper surface of the mounting plate 304 is fixed with a pressurizing box 3010, and the inner walls on both sides of the pressurizing box 3010 are rotatably provided with a horizontal axis 3011, and the surface of the horizontal axis 3011 is fixed with two symmetrical reciprocating screws 3012, the inner wall of the pressurizing box 3010 is slidably provided with two symmetrical rectangular plates 3013, and the surfaces of the two rectangular plates 3013 are provided with threaded holes that are threadedly connected to the outer surface of the reciprocating screw 3012, and the inner walls on both sides of the pressurizing box 3010 are fixed with two symmetrical push-type air pumps 3014, and the push-type air pumps 3014 are pressed by the push-type air pumps 3014. The pressure ends are fixedly connected to the surfaces of the two rectangular plates 3013 respectively; the ends of the push-type air pump 3014 are respectively provided with an air intake pipe 3015 and a pressurizing pipe 3016, and the end of the air intake pipe 3015 extends to the outer surface of the pressurizing box 3010 and is provided with a filter cover, the surface of the air intake pipe 3015 is provided with an air intake 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, and the inner wall of the push-type air pump 3014 is fixedly provided with a return spring 3019.

[0040] Specifically, by adopting the above technical solution, the purpose of automatically pressurizing the interior of the cooling water tank 301 can be achieved during the process of processing the steel billet through the rotation of the rolling roller 204, thereby achieving the purpose of automatic water spray cooling.

[0041] Please refer to Figure 6 A transmission wheel 3020 is fixedly provided on the surface of a connecting rod 208 and a horizontal axis 3011, and a transmission belt 3021 is sleeved on the surface of the two transmission wheels 3020. The lower surface of the mounting plate 304 and the pressurizing box 3010 are provided with openings for transmission by the transmission belt 3021.

[0042] Specifically, by adopting the above technical solution, the horizontal axis 3011 can be driven to rotate by the rotation of a connecting rod 208 .

[0043] In this embodiment, by setting up a cooling mechanism 300, the purpose of continuously pressing the push-type air pump 3014 can be achieved during the rotation of a connecting rod 208, so that the cooling water in the cooling water tank 301 enters the annular tube 302 through the water pipe 307, and is sprayed out through a number of cooling nozzles 303 to effectively cool the steel billet.

[0044] On the other hand, the embodiment of the present application also provides a process for the above-mentioned seamless steel pipe cross-rolling equipment, comprising the following steps: S1: conveying the preheated billet and passing through the feeding port into the inner part of the annular frame 202; S2: Start the driving motor 205. The rotation of the driving motor 205 drives the second toothed disc 2016 to rotate. The rotation of the second toothed disc 2016 drives the rotating ring 2013 to rotate under the action of the second annular inner toothed ring 2015. The rotation of the rotating ring 2013 drives the first annular inner toothed ring 2014 to rotate. The rotation of the first annular inner toothed ring 2014 drives the six first toothed discs 2012 to rotate simultaneously. The rotation of the first toothed disc 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 rollers 204 to rotate through the universal coupling 209, thereby driving the six rollers 204 to rotate simultaneously, and rolling and pressing the steel billet in the conveying process; S3: Cooling and cooling the steel billet after being processed by the six rolling rollers 204.

[0045] How it works When processing the steel billet for manufacturing seamless steel pipe, the equipment can pass the heated steel billet through the feeding port and enter the inside of the annular frame 202 through the conveying mechanism, and start the driving motor 205 at the same time. The rotation of the driving motor 205 drives the second gear disc 2016 to rotate. The rotation of the second gear disc 2016 drives the rotating ring 2013 to rotate under the action of the second annular inner gear ring 2015. 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 disc 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 the steel billet in the conveying process is rolled. The steel billet is processed by pressing, thereby effectively improving the production efficiency of seamless steel pipes, reducing energy consumption, reducing the occurrence of internal defects, improving product quality and stability, simplifying production equipment, and reducing maintenance costs. In addition, during the rotation of a connecting rod 208, the horizontal axis 3011 can be driven to rotate under the action of two transmission wheels 3020 and a transmission belt 3021. The rotation of the horizontal axis 3011 drives the two reciprocating screws 3012 to rotate. The rotation of the reciprocating screw 3012 drives the rectangular plate 3013 to move back and forth on the inner wall of the pressurizing box 3010, thereby achieving the purpose of continuously pressing the push-type air pump 3014, so that the push-type air pump 3014 can continuously pressurize the interior of the cooling water tank 301 through the pressurizing pipe 3016, so that the cooling water in the cooling water tank 301 enters the annular pipe 302 through the water pipe 307, and is sprayed out through a number of cooling nozzles 303 to effectively cool the steel billet.

[0046] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A seamless steel pipe cross-rolling equipment, characterized in that: include: A base (100) and a PLC controller; An oblique rolling mechanism (200) for processing a steel billet that is heated, transported and rotated, the oblique rolling mechanism (200) comprising a driving disc (201) and an annular frame (202) respectively fixed on the upper surface of a base (100), the inner wall of the annular frame (202) being provided with six support frames (203) in a circumferential array, and the inner walls of the six support frames (203) being provided with rollers (204) for rotation, the oblique rolling mechanism (200) further comprising a driving motor (205) provided on the side of the driving disc (201) for driving the six rollers (204) to rotate simultaneously; A cooling mechanism (300) is used to cool the steel billet after oblique rolling, the cooling mechanism (300) comprising a cooling water tank (301) and an annular tube (302) arranged on the side of the annular frame (202), and a plurality of cooling nozzles (303) are arranged in a circular array on the inner annular surface of the annular tube (302).

2. The seamless steel pipe cross-rolling equipment according to claim 1, characterized in that: A through hole is provided on the surface of the support frame (203), and a connecting shaft (206) is fixedly provided 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), and a hydraulic rod (207) corresponding to the support frame (203) is rotatably provided on the inner wall of the annular frame (202), and the telescopic end of the hydraulic rod (207) is rotatably connected to the surface of the support frame (203).

3. The seamless steel pipe cross-rolling equipment according to claim 1, characterized in that: A material outlet is provided in the central area of ​​the driving disk (201), and an annular cavity is provided inside the driving disk (201); six connecting rods (208) extending to the outer surface of the driving disk (201) are rotatably arranged on the inner wall of the annular cavity in a circular array; 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 roller (204).

4. The seamless steel pipe cross-rolling equipment according to claim 3, characterized in that: A square column (2011) is fixedly provided at the end of the connecting rod (2010), and a square cavity is opened at the end of the connecting rod (208), and the square column (2011) is slidably connected to the inner wall of the square cavity.

5. The seamless steel pipe cross-rolling equipment according to claim 4, characterized in that: A first toothed disc (2012) is fixedly provided at one end of the connecting rod (208); a rotating ring (2013) is rotatably provided on the inner wall of the annular cavity; a first annular inner toothed ring (2014) and a second annular inner toothed ring (2015) are respectively fixedly provided on the inner ring surface of the rotating ring (2013); the six first toothed discs (2012) are mutually meshed with the first annular inner toothed ring (2014); the output end of the driving motor (205) extends to the interior of the annular cavity and is fixedly provided with a second toothed disc (2016); the second toothed disc (2016) is mutually meshed with the second annular inner toothed ring (2015).

6. The seamless steel pipe cross-rolling equipment according to claim 5, characterized in that: The cooling mechanism (300) further comprises a mounting plate (304) fixedly mounted on the upper surfaces of the driving disk (201) and the annular frame (202), and the cooling water tank (301) is fixedly mounted on the upper surface of the mounting plate (304) via four mounting columns, a water inlet pipe (305) connected to an external tap water pipe is arranged on the top of the cooling water tank (301), and a solenoid valve (306) is arranged on the surface of the water inlet pipe (305), a water delivery pipe (307) is arranged 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 to the interior of the annular pipe (302); A low water level sensor (308) and a high water level sensor (309) are arranged inside the cooling water tank (301); the low water level sensor (308), the high water level sensor (309) and the electromagnetic valve (306) are all electrically connected to the PLC controller via wires.

7. The seamless steel pipe cross-rolling equipment according to claim 6, characterized in that: A pressurizing box (3010) is fixedly arranged on the upper surface of the mounting plate (304), and a transverse axis (3011) is rotatably arranged on the inner walls of both sides of the pressurizing box (3010), and two symmetrical reciprocating screws (3012) are fixedly arranged on the surface of the transverse axis (3011), two symmetrical rectangular plates (3013) are slidably arranged on the inner wall of the pressurizing box (3010), and the surfaces of the two rectangular plates (3013) are provided with threaded holes threadedly connected to the outer surfaces of the reciprocating screws (3012), and two symmetrical press-type air pumps (3014) are fixedly arranged on the inner walls of both sides of the pressurizing box (3010), and the pressing ends of the two press-type air pumps (3014) are respectively fixedly connected to the surfaces of the two rectangular plates (3013); An air intake pipe (3015) and a pressurizing pipe (3016) are respectively provided at the ends of the push-type air pump (3014), and the end of the air intake pipe (3015) extends to the outer surface of the pressurizing box (3010) and is provided with a filter cover, an air intake one-way valve (3017) is provided on the surface of the air intake pipe (3015), the other end of the pressurizing pipe (3016) extends to the interior of the cooling water tank (301), and an air outlet one-way valve (3018) is provided on the surface of the pressurizing pipe (3016), and a return spring (3019) is fixedly provided on the inner wall of the push-type air pump (3014).

8. The seamless steel pipe cross-rolling equipment according to claim 7, characterized in that: A transmission wheel (3020) is fixedly provided on the surface of the connecting rod (208) and the transverse axis (3011), and a transmission belt (3021) is sleeved on the surface of the two transmission wheels (3020), and openings for transmission by the transmission belt (3021) are provided on the lower surface of the mounting plate (304) and the pressurizing box (3010).

9. A seamless steel pipe cross-rolling process, according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: conveying the preheated steel billet and passing through the material outlet into the interior of the annular frame (202); S2: starting the driving motor (205), the rotation of the driving motor (205) drives the second toothed disc (2016) to rotate, the rotation of the second toothed disc (2016) drives the rotating ring (2013) to rotate under the action of the second annular inner toothed ring (2015), the rotation of the rotating ring (2013) drives the first annular inner toothed ring (2014) to rotate, the rotation of the first annular inner toothed ring (2014) drives the six first toothed discs (2012) to rotate simultaneously, the rotation of the first toothed disc (2012) drives the connecting rod (208) to rotate, the rotation of the connecting rod (208) drives the connecting rod (2010) to rotate via the square column (2011), the rotation of the connecting rod (2010) drives the roller (204) to rotate via the universal coupling (209), thereby driving the six rollers (204) to rotate simultaneously, and rolling and pressing the steel billet during transportation; S3: Cooling down, automatically cooling down the steel billet after being processed by the six rolling rollers (204).

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