Steel pipe quenching device

Abstract

The invention discloses a steel pipe quenching device which comprises a water tank, a mounting plate is fixedly connected to the rear side of the top of the water tank, and an eddy current heating ring is fixedly mounted at the top of the front side of the mounting plate. A water pump works to pump water in a water tank into a spray head, water is sprayed to the surface of the steel pipe through the spray head, so that the surface of the steel pipe is rapidly cooled, then a hydraulic push rod is started to push a lifting block to move downwards and drive a second L-shaped plate to move downwards, the steel pipe is immersed in a water tank to be rapidly cooled, and then the quenching process is completed. The conditions of deformation, distortion and even cracking in the steel pipe quenching process are effectively avoided, the hardness and strength of the steel pipe are guaranteed, and the original form of the steel pipe is effectively kept.

Description

Technical Field

[0001] This invention relates to the field of steel pipe production and processing technology, specifically to a steel pipe quenching device. Background Technology

[0002] Quenching is a metal heat treatment process. It involves heating a metal product to a certain temperature and then rapidly cooling it in water, oil, or air to increase its hardness and strength. Quenching is also a common process in the heat treatment of steel pipes. Currently, steel pipe quenching often involves heating the pipe to a certain temperature and then rapidly cooling it in water. However, for steel pipes with smaller diameters, rapidly immersing them in water after heating can easily lead to deformation, twisting, or even cracking. Furthermore, existing quenching equipment has low efficiency and cannot meet current processing requirements. Summary of the Invention

[0003] The technical problem solved by this invention is to overcome the defects of the prior art and provide a steel pipe quenching device.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a steel pipe quenching device, comprising a water tank, an mounting plate fixedly connected to the rear top of the water tank, and an eddy current heating coil fixedly installed at the top front side of the mounting plate; a support plate fixedly connected to the left top of the water tank, and a horizontal plate fixedly connected to the right side of the support plate near the top; a hydraulic push rod fixedly connected through the horizontal plate near the left side, and a lifting block fixedly connected to the power end of the hydraulic push rod; a first L-shaped plate fixedly connected to the right side of the lifting block, and a first bearing fixedly connected to the first L-shaped plate near the bottom; a rotating shaft penetrating the inner cavity of the first bearing, and a second L-shaped plate fixedly connected to the right end of the rotating shaft; a transmission mechanism provided at the left end of the rotating shaft; a fourth bearing fixedly connected to the bottom of the second L-shaped plate; and a chuck provided at the top of the second L-shaped plate, with a circular groove formed at the center of the top of the chuck. A circular plate is fitted to the bottom of the inner cavity of the circular groove. A second square-hole tube is inserted into the center of the bottom of the circular groove, and the bottom end of the second square-hole tube passes through the inner cavity of the fourth bearing. A rotating mechanism is provided on the front side of the water tank. A water tank is fixedly connected to the right side of the water tank, and a water pump is fixedly installed on the top of the water tank. A water pump is fixedly connected to the right side of the water pump, and the other end of the water pump passes through the top of the water tank and extends to the inner cavity of the water tank near the bottom. A nozzle is provided on the left side of the water tank near the top, and a connecting block is fixedly connected to the right side of the nozzle. A moving mechanism is provided at the bottom of the connecting block. A hose is fixedly connected to the left side of the water pump, and the other end of the hose passes through the connecting block and is fixedly connected to the nozzle. A liquid level sensor is fixedly installed on the bottom of the inner cavity of the water tank near the right side, and a controller is fixedly installed on the right side of the water tank. An indicator light is fixedly installed on the top of the water tank near the right side.

[0005] Preferably, the transmission mechanism includes a driven bevel gear, which is fixedly connected to the left end of the rotating shaft. A transmission bevel gear meshes with the left side of the driven bevel gear, and a first square-hole tube is provided through the center of the transmission bevel gear. A second bearing is fixedly connected to the top of the first L-shaped plate near the right side. The top end of the first square-hole tube passes through the inner cavity of the second bearing, and a matching first square rod is inserted into the top end of the inner cavity of the first square-hole tube. A transmission shaft is fixedly connected to the top end of the first square rod. A third bearing is fixedly connected to the right side of the horizontal plate, and a motor housing is fixedly connected to the top of the horizontal plate near the right side. A first servo motor is fixedly installed at the top of the inner cavity of the motor housing. The top end of the transmission shaft passes through the inner cavity of the third bearing and is fixedly connected to the power output end of the first servo motor.

[0006] Preferably, the inner cavity of the circular groove has a limiting slot on both the left and right sides, and the inner cavity of the limiting slot is movably connected to a limiting plate. The adjacent side of the two limiting plates is fixedly connected to the left and right sides of the circular plate, respectively. The top of the two limiting plates is fixedly connected to a spring, and the other end of the spring is fixedly connected to the top of the inner cavity of the limiting slot.

[0007] Preferably, the rotating mechanism includes a third L-shaped plate, which is fixedly connected to the front side of the water tank. A fifth bearing is fixedly connected to the third L-shaped plate near its top, and a third-hole round tube is passed through the inner cavity of the fifth bearing. A second square rod that matches the third bearing is passed through the inner cavity of the third-hole round tube. A push plate is rotatably connected to the front end of the second square rod. A connecting plate is fixedly connected to the top of the third L-shaped plate, and an electro-hydraulic push rod is fixedly installed at the bottom front side of the connecting plate. The power end of the electro-hydraulic push rod is fixedly connected to the front side of the push plate. A driven gear is sleeved and fixedly connected to the outer wall of the third-hole round tube near its front end, and a transmission gear meshes with the bottom of the driven gear. A bracket is welded to the bottom front side of the third L-shaped plate, and a second servo motor is fixedly installed at the top of the bracket. A transmission rod is passed through the center of the transmission gear. The rear end of the transmission rod is rotatably connected to the front side wall of the third L-shaped plate, and the front end of the transmission rod is fixedly connected to the power output end of the second servo motor.

[0008] Preferably, the inner diameter of the third-hole round tube is the same as the inner diameter of the second square-hole round tube, and the second square rod is adapted to both the second square-hole round tube and the third-hole round tube.

[0009] Preferably, the moving mechanism includes an L-shaped rod, with one end of the L-shaped rod fixedly connected to the top of the connecting block. A threaded block is fixedly connected to the other end of the L-shaped rod. A limit rod is fixedly connected to the right side of the threaded block. A limit groove is formed on the left side of the water tank, and the right end of the limit rod is inserted into the inner cavity of the limit groove. Threaded holes are formed on both the front and rear sides of the threaded block, and a threaded rod passes through the inner cavity of the threaded holes. Fixed plates are fixedly connected to the front and rear sides of the top of the water tank near the right side. A sixth bearing is fixedly connected to the fixed plate on the front side. The rear end of the threaded rod is rotatably connected to the adjacent fixed plate, and the front end of the threaded rod passes through the inner cavity of the sixth bearing and is fixedly connected to a driven wheel. A transmission wheel is sleeved and fixedly connected to the outer wall of the transmission rod near the front end. A belt is provided between the transmission wheel and the driven wheel, and the transmission wheel and the driven wheel are connected by belt drive.

[0010] Preferably, a rectangular slot is provided at the bottom center of the mounting plate, and a feeding plate is fixedly connected to the bottom of the inner cavity of the rectangular slot. The right-view cross-section of the feeding plate is a right-angled trapezoid.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. After fixing the steel pipe onto the chuck, the present invention uses a hydraulic push rod to pull the lifting block upwards, thereby causing the steel pipe to be inserted into the eddy current heating coil for heating treatment. When the steel reaches its critical temperature, the hydraulic push rod is activated to push the lifting block back to its original position, and the first servo motor is activated to drive the transmission shaft to rotate. The rotation of the transmission shaft drives the first square rod to rotate, and the rotation of the first square rod drives the first square-hole round tube to rotate. Through the meshing of the transmission bevel gear and the driven bevel gear, the rotating shaft is driven to rotate, causing the second L-shaped plate to rotate 90 degrees to the rear. The steel pipe is kept horizontal. Then, the water pump is started, which pumps water from the tank into the nozzle and sprays it onto the surface of the steel pipe, allowing the surface to cool rapidly. Next, the hydraulic push rod is activated to move the lifting block downwards and move the second L-shaped plate downwards, thereby immersing the steel pipe in the water tank for rapid cooling and completing the quenching process. This effectively avoids deformation, twisting, or even cracking of the steel pipe during the quenching process, ensuring both the hardness and strength of the steel pipe and effectively maintaining its original shape.

[0013] 2. In this invention, when the steel pipe is in a horizontal position, the electro-hydraulic actuator pushes the push plate backward, thereby inserting the rear end of the second square rod into the inner cavity of the second square-hole round tube. Then, by activating the second servo motor, the transmission rod can be rotated. The rotation of the transmission rod drives the transmission gear to rotate, which in turn drives the driven gear to rotate. The rotation of the driven gear drives the third square-hole round tube to rotate, which in turn drives the second square rod to rotate. The rotation of the second square rod drives the second square-hole round tube to rotate, thereby driving the chuck to rotate and causing the steel pipe to rotate slowly. At the same time, the rotation of the transmission rod drives the transmission wheel to rotate, which in turn drives the driven wheel via a belt. The driven wheel rotates, driving the threaded rod to rotate and causing the threaded block to move horizontally backward. After the threaded block moves backward a certain distance, the second servo motor rotates in the opposite direction, which can drive the threaded block to reset forward. This accelerates the cooling efficiency of the steel pipe as it rotates and the nozzle moves back and forth. In addition, after the steel pipe is quenched, the second square rod can be reinserted into the inner cavity of the second square hole round pipe, and the electro-hydraulic push rod can be activated to continue moving backward. This pushes the round plate to overcome the resistance of the two springs and pushes the steel pipe out of the chuck cavity, allowing the steel pipe to slide down from the feeding plate to complete the automatic feeding, further accelerating the working efficiency of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a right-side sectional view of the water tank component of the present invention;

[0016] Figure 3 This is a top view of the water tank component of the present invention;

[0017] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0019] Figure 6 for Figure 2 Enlarged view of point C in the middle.

[0020] Labels in the diagram: 1. Water tank; 2. Mounting plate; 3. Eddy current heating coil; 4. Support plate; 5. Hydraulic push rod; 6. Lifting block; 7. First square rod; 8. Drive shaft; 9. First servo motor; 10. Water tank; 11. Liquid level sensor; 12. Controller; 13. Indicator light; 14. Water pump; 15. Pumping pipe; 16. Hose; 17. Threaded block; 18. Nozzle; 19. Driven gear; 20. Feeding plate; 21. Electro-hydraulic push rod; 22. Threaded rod ; 23. Third L-shaped plate; 24. Second servo motor; 25. Transmission rod; 26. Transmission gear; 27. Driven wheel; 28. Transmission wheel; 29. ​​First L-shaped plate; 30. Second L-shaped plate; 31. Chuck; 32. Round plate; 33. Second square hole round tube; 34. Rotating shaft; 35. Driven bevel gear; 36. Transmission bevel gear; 37. First square hole round tube; 38. Second square rod; 39. Spring; 40. Third square hole round tube; 41. Push plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-6This invention provides a technical solution: a steel pipe quenching device, including a water tank 1, an mounting plate 2 fixedly connected to the rear top of the water tank 1, and an eddy current heating coil 3 fixedly installed at the top front side of the mounting plate 2. A rectangular slot is formed at the middle of the bottom of the mounting plate 2, and a feeding plate 20 is fixedly connected to the bottom of the inner cavity of the rectangular slot. The right-view cross-section of the feeding plate 20 is a right-angled trapezoid, which facilitates automatic feeding of the quenched steel pipe and improves processing efficiency. A support plate 4 is fixedly connected to the left top of the water tank 1, and a horizontal plate is fixedly connected to the right side of the support plate 4 near the top. The horizontal plate is fixed through the left side. A hydraulic push rod 5 is provided, and a lifting block 6 is fixedly connected to the power end of the hydraulic push rod 5. A first L-shaped plate 29 is fixedly connected to the right side of the lifting block 6, and a first bearing is fixedly connected to the first L-shaped plate 29 near its bottom. A rotating shaft 34 is provided through the inner cavity of the first bearing, and a second L-shaped plate 30 is fixedly connected to the right end of the rotating shaft 34. A transmission mechanism is provided at the left end of the rotating shaft 34. A fourth bearing is fixedly connected to the bottom of the second L-shaped plate 30, and a chuck 31 is provided at the top of the second L-shaped plate 30. A circular groove is opened at the center of the top of the chuck 31, and a circular plate 32 is attached to the bottom of the inner cavity of the circular groove. The left and right sides of the inner cavity of the circular groove are... Each side has a limiting slot, and the inner cavity of the limiting slot is movably connected to a limiting plate. The adjacent sides of the two limiting plates are fixedly connected to the left and right sides of the circular plate 32, respectively. The top of each limiting plate is fixedly connected to a spring 39, and the other end of the spring 39 is fixedly connected to the top of the inner cavity of the limiting slot, which can reset the circular plate 32. A second square hole tube 33 is inserted into the center of the bottom of the circular groove, and the bottom end of the second square hole tube 33 passes through the inner cavity of the fourth bearing. A rotating mechanism is provided on the front side of the water tank 1. A water tank 10 is fixedly connected to the right side of the water tank 1, and a water pump 14 is fixedly installed on the top of the water tank 10. The right side of the water pump 14 is fixedly connected to... There is a water suction pipe 15, and the other end of the water suction pipe 15 passes through the top of the water tank 10 and extends to the inner cavity of the water tank 10 near the bottom. A nozzle 18 is provided on the left side of the water tank 10 near the top, and a connecting block is fixedly connected to the right side of the nozzle 18. A moving mechanism is provided at the bottom of the connecting block. A hose 16 is fixedly connected to the left side of the water pump 14, and the other end of the hose 16 passes through the connecting block and is fixedly connected to the nozzle 18. A liquid level sensor 11 is fixedly installed at the bottom of the inner cavity of the water tank 10 near the right side, and a controller 12 is fixedly installed on the right side of the water tank 10. An indicator light 13 is fixedly installed at the top of the water tank 10 near the right side.

[0023] The transmission mechanism includes a driven bevel gear 35, which is fixedly connected to the left end of the rotating shaft 34. A transmission bevel gear 36 meshes with the left side of the driven bevel gear 35, and a first square hole tube 37 is provided through the center of the transmission bevel gear 36. A second bearing is fixedly connected to the top of the first L-shaped plate 29 near the right side. The top of the first square hole tube 37 passes through the inner cavity of the second bearing, and a first square rod 7 that matches it is inserted into the top of the inner cavity of the first square hole tube 37. A transmission shaft 8 is fixedly connected to the top of the first square rod 7. A third bearing is fixedly connected to the right side of the horizontal plate, and a motor housing is fixedly connected to the top of the horizontal plate near the right side. A first servo motor 9 is fixedly installed at the top of the inner cavity of the motor housing. The top of the transmission shaft 8 passes through the inner cavity of the third bearing and is fixedly connected to the power output end of the first servo motor 9. By driving the chuck 31 to rotate, the state of the steel pipe can be quickly switched, which is beneficial to improving the continuity of processing.

[0024] The rotating mechanism includes a third L-shaped plate 23, which is fixedly connected to the front side of the water tank 1. A fifth bearing is fixedly connected to the third L-shaped plate 23 near its top, and a third-hole round tube 40 is provided through the inner cavity of the fifth bearing. A matching second square rod 38 is provided through the inner cavity of the third-hole round tube 40. The inner diameter of the third-hole round tube 40 is the same as the inner diameter of the second square-hole round tube 33. The second square rod 38 is adapted to both the second square-hole round tube 33 and the third-hole round tube 40. A push plate 41 is rotatably connected to the front end of the second square rod 38. A connecting plate is fixedly connected to the top of the third L-shaped plate 23, and an electric motor is fixedly installed at the bottom front side of the connecting plate. The hydraulic push rod 21 and the power end of the electro-hydraulic push rod 21 are fixedly connected to the front side of the push plate 41. A driven gear 19 is sleeved and fixed on the outer side wall of the third hole round tube 40 near the front end, and a transmission gear 26 is meshed at the bottom of the driven gear 19. A bracket is welded to the bottom front side of the third L-shaped plate 23, and a second servo motor 24 is fixedly installed on the top of the bracket. A transmission rod 25 is provided through the center of the transmission gear 26. The rear end of the transmission rod 25 is rotatably connected to the front side wall of the third L-shaped plate 23, and the front end of the transmission rod 25 is fixedly connected to the power output end of the second servo motor 24. By driving the steel pipe to rotate, the nozzle 18 sprays water more evenly on its surface.

[0025] The moving mechanism includes an L-shaped rod, with one end of the L-shaped rod fixedly connected to the top of the connecting block. The other end of the L-shaped rod is fixedly connected to a threaded block 17. A limit rod is fixedly connected to the right side of the threaded block 17. A limit groove is opened on the left side of the water tank 10, and the right end of the limit rod is inserted into the inner cavity of the limit groove. Threaded holes are opened on both the front and rear sides of the threaded block 17, and a threaded rod 22 passes through the inner cavity of the threaded hole. Fixed plates are fixedly connected to the front and rear sides of the top of the water tank 1 near the right side. A sixth bearing is fixedly connected to the fixed plate on the front side. The rear end of the threaded rod 22 is rotatably connected to the adjacent fixed plate, and the front end of the threaded rod 22 passes through the inner cavity of the sixth bearing and is fixedly connected to a driven wheel 27. A transmission wheel 28 is sleeved and fixedly connected to the outer wall of the transmission rod 25 near the front end. A belt is provided between the transmission wheel 28 and the driven wheel 27, and the transmission wheel 28 and the driven wheel 27 are connected by belt drive, which increases the spray range of the nozzle 18 and improves the cooling efficiency.

[0026] Working principle: In use, after the steel pipe is fixed on the chuck 31, the hydraulic push rod 5 is activated to pull the lifting block 6 upward, thereby driving the steel pipe into the eddy current heating coil 3 for heating treatment. When the steel reaches its critical temperature, the hydraulic push rod 5 is activated to push the lifting block 6 back to its original position, and the first servo motor 9 is activated to drive the transmission shaft 8 to rotate. The rotation of the transmission shaft 8 drives the first square rod 7 to rotate, and the rotation of the first square hole round tube 37 drives the first square hole round tube 37 to rotate. Through the meshing of the transmission bevel gear 36 and the driven bevel gear 35, the rotating shaft 34 is rotated, which causes the second L-shaped plate 30 to rotate 90 degrees to the rear, so that the steel pipe is kept in a horizontal state. By activating the water pump 14, water from the water tank 10 is pumped into the nozzle 18, which sprays water onto the surface of the steel pipe, rapidly cooling the pipe. Additionally, activating the electro-hydraulic actuator 21 moves the push plate 41 backward, inserting the rear end of the second square rod 38 into the inner cavity of the second square-hole tube 33. Then, activating the second servo motor 24 rotates the transmission rod 25, which in turn rotates the transmission gear 26, which in turn rotates the driven gear 19. The driven gear 19 then rotates the third square-hole tube 40, which in turn rotates the second square rod 38, which in turn rotates the second square-hole tube. The rotation of motor 33 drives chuck 31 to rotate, causing the steel pipe to rotate slowly. Simultaneously, the rotation of transmission rod 25 drives transmission wheel 28 to rotate, which in turn drives driven wheel 27 to rotate via a belt. Driven wheel 27 rotates, driving threaded rod 22 to rotate, causing threaded block 17 to move horizontally backward. After threaded block 17 has moved backward a certain distance, the second servo motor 24 rotates in the opposite direction, causing threaded block 17 to return to its original position. This accelerates the cooling efficiency of the steel pipe as it rotates and nozzle 18 moves back and forth. Once surface cooling is complete, the second servo motor 24 is turned off, and electro-hydraulic actuator 21 is activated to pull push plate 41 back to its original position. Then, hydraulic actuator 5 is activated to push lifting block 6. The device moves downwards, causing the second L-shaped plate 30 to move downwards as well, thereby immersing the steel pipe in the water tank 1 for rapid cooling and quenching. This effectively prevents deformation, twisting, or even cracking of the steel pipe during quenching, ensuring both the hardness and strength of the steel pipe and maintaining its original shape. Furthermore, after the steel pipe is quenched, the second square rod 38 can be reinserted into the inner cavity of the second square hole round tube 33, and the electro-hydraulic push rod 21 can be activated to continue moving backwards. This pushes the round plate 32 to overcome the resistance of the two springs 39 and push the steel pipe out of the chuck 31, allowing it to slide down from the unloading plate 20 to complete automatic unloading, further accelerating the working efficiency of the device.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel pipe quenching device, comprising a water tank (1), characterized in that: A mounting plate (2) is fixedly connected to the rear top of the water tank (1), and a vortex heating coil (3) is fixedly installed at the top front side of the mounting plate (2). A support plate (4) is fixedly connected to the left top of the water tank (1), and a horizontal plate is fixedly connected to the right side of the support plate (4) near the top. A hydraulic push rod (5) is fixedly connected through the horizontal plate near the left side, and a lifting block (6) is fixedly connected to the power end of the hydraulic push rod (5). A first L-shaped plate (29) is fixedly connected to the right side of the lifting block (6), and the first L-shaped plate... (29) A first bearing is fixedly connected near the bottom. A rotating shaft (34) is provided through the inner cavity of the first bearing. A second L-shaped plate (30) is fixedly connected to the right end of the rotating shaft (34). A transmission mechanism is provided at the left end of the rotating shaft (34). A fourth bearing is fixedly connected to the bottom of the second L-shaped plate (30). A chuck (31) is provided at the top of the second L-shaped plate (30). A circular groove is provided at the center of the top of the chuck (31). A circular plate (32) is attached to the bottom of the inner cavity of the circular groove. The center of the bottom of the circular groove is... A second square-hole round tube (33) is inserted into the water tank (1), and the bottom end of the second square-hole round tube (33) passes through the inner cavity of the fourth bearing. A rotating mechanism is provided on the front side of the water tank (1). A water tank (10) is fixedly connected to the right side of the water tank (1), and a water pump (14) is fixedly installed on the top of the water tank (10). A water pump (15) is fixedly connected to the right side of the water pump (14), and the other end of the water pump (15) passes through the top of the water tank (10) and extends to the inner cavity of the water tank (10) near the bottom. The left side of the water tank (10) is near the top. A nozzle (18) is provided, and a connecting block is fixedly connected to the right side of the nozzle (18). A moving mechanism is provided at the bottom of the connecting block. A hose (16) is fixedly connected to the left side of the water pump (14), and the other end of the hose (16) passes through the connecting block and is fixedly connected to the nozzle (18). A liquid level sensor (11) is fixedly installed at the bottom of the inner cavity of the water tank (10) near the right side. A controller (12) is fixedly installed on the right side of the water tank (10). An indicator light (13) is fixedly installed on the top of the water tank (10) near the right side.

2. The steel pipe quenching device according to claim 1, characterized in that: The transmission mechanism includes a driven bevel gear (35), which is fixedly connected to the left end of the rotating shaft (34). A transmission bevel gear (36) meshes with the left side of the driven bevel gear (35), and a first square hole tube (37) is provided through the center of the transmission bevel gear (36). A second bearing is fixedly connected to the top of the first L-shaped plate (29) near the right side. The top end of the first square hole tube (37) passes through the inner cavity of the second bearing. A first square rod (7) that matches the first square hole tube (37) is inserted into the top end of the inner cavity of the first square hole tube (37). A transmission shaft (8) is fixedly connected to the top end of the first square rod (7). A third bearing is fixedly connected to the right side of the horizontal plate. A motor housing is fixedly connected to the top of the horizontal plate near the right side. A first servo motor (9) is fixedly installed at the top of the inner cavity of the motor housing. The top end of the transmission shaft (8) passes through the inner cavity of the third bearing and is fixedly connected to the power output end of the first servo motor (9).

3. The steel pipe quenching device according to claim 1, characterized in that: The inner cavity of the circular groove has a limiting slot on both the left and right sides, and the inner cavity of the limiting slot is movably connected to a limiting plate. The adjacent side of the two limiting plates is fixedly connected to the left and right sides of the circular plate (32), and the top of the two limiting plates is fixedly connected to a spring (39), and the other end of the spring (39) is fixedly connected to the top of the inner cavity of the limiting slot.

4. The steel pipe quenching device according to claim 1, characterized in that: The rotating mechanism includes a third L-shaped plate (23), which is fixedly connected to the front side of the water tank (1). A fifth bearing is fixedly connected to the third L-shaped plate (23) near the top, and a third-hole round tube (40) is provided through the inner cavity of the fifth bearing. A second square rod (38) that matches the third-hole round tube (40) is provided through the inner cavity of the third-hole round tube (40). A push plate (41) is rotatably connected to the front end of the second square rod (38). A connecting plate is fixedly connected to the top of the third L-shaped plate (23), and an electro-hydraulic push rod (21) is fixedly installed at the bottom front side of the connecting plate. The electro-hydraulic push rod (21) moves... The force end is fixedly connected to the front side of the push plate (41). A driven gear (19) is sleeved and fixed on the outer side wall of the third hole round tube (40) near the front end. A transmission gear (26) meshes with the bottom of the driven gear (19). A bracket is welded to the bottom front side of the third L-shaped plate (23). A second servo motor (24) is fixedly installed on the top of the bracket. A transmission rod (25) is provided through the center of the transmission gear (26). The rear end of the transmission rod (25) is rotatably connected to the front side wall of the third L-shaped plate (23). The front end of the transmission rod (25) is fixedly connected to the power output end of the second servo motor (24).

5. A steel pipe quenching device according to claim 4, characterized in that: The inner diameter of the third-hole round tube (40) is the same as that of the second square-hole round tube (33), and the second square rod (38) is adapted to both the second square-hole round tube (33) and the third-hole round tube (40).

6. A steel pipe quenching device according to claim 4, characterized in that: The moving mechanism includes an L-shaped rod, and the other end of the L-shaped rod is fixedly connected to the top of the connecting block. The other end of the L-shaped rod is fixedly connected to a threaded block (17). A limit rod is fixedly connected to the right side of the threaded block (17). A limit groove is opened on the left side of the water tank (10), and the right end of the limit rod is inserted into the inner cavity of the limit groove. Threaded holes are opened on both the front and rear sides of the threaded block (17), and a threaded rod (22) is passed through the inner cavity of the threaded hole. The top of the water tank (1) is located on both the front and rear sides near the right side. All are fixedly connected to a fixing plate. A sixth bearing is fixedly connected to the fixing plate located on the front side. The rear end of the threaded rod (22) is rotatably connected to the adjacent fixing plate. The front end of the threaded rod (22) passes through the inner cavity of the sixth bearing and is fixedly connected to a driven wheel (27). A transmission wheel (28) is sleeved and fixed near the front end of the outer side wall of the transmission rod (25). A belt is provided between the transmission wheel (28) and the driven wheel (27). The transmission wheel (28) and the driven wheel (27) are connected by belt drive.

7. A steel pipe quenching device according to claim 1, characterized in that: A rectangular slot is provided at the bottom center of the mounting plate (2), and a feeding plate (20) is fixedly connected to the bottom of the inner cavity of the rectangular slot. The right-view cross-section of the feeding plate (20) is a right trapezoid.

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