A dual-channel high-strength round tube induction quenching equipment

Abstract

The present invention provides a dual-channel high-strength round tube induction quenching equipment, comprising: a round tube discharge mechanism; a round tube channel blanking conveying mechanism installed on the side of the round tube discharge mechanism; a round tube conveying mechanism, a double round tube power propulsion mechanism, a double round tube pressing transition mechanism, a double round tube friction conveying mechanism, a quenching and tempering device, a double round tube friction conveying mechanism, a slow cooling unloading mechanism, and a unloading buffer mechanism installed behind the round tube channel blanking conveying mechanism along the round tube conveying direction; and a round tube stacking and swinging rack installed on one side of the unloading buffer mechanism. This dual-channel high-strength round tube induction quenching equipment can realize automatic loading, dividing and forward conveying of round tubes, and can convey two round tubes at the same time, greatly improving the efficiency of round tube loading and conveying. This dual-channel high-strength round tube induction quenching equipment has a reasonable design and a simple structure, and can realize automatic loading, dividing, stable forward propulsion, quenching, tempering, slow cooling, surface grinding, and unloading of double round tubes.

Description

Technical Field

[0001] The invention relates to the technical field of quenching equipment, and in particular to a dual-channel high-strength round tube induction quenching equipment. Background Art

[0002] During the actual processing, high-strength round tubes need to undergo surface quenching, tempering and other operations to enhance the surface strength of the tubes. After quenching, tempering and water cooling, the surface of the tempered tubes needs to be polished, and the tubes need to be slowly advanced so that they can be gradually cooled before being unloaded. In the prior art, the patent CN115198078A previously applied for by the applicant discloses a continuous induction quenching heat treatment equipment for automobile bumpers, which can adapt to the processing requirements of automatic loading, conveying, speed separation, straight forward conveying, quenching, tempering, cooling and unloading of automobile bumpers of different models and sizes, and can achieve stable straight forward conveying of automobile bumpers, preventing deviation and slipping during quenching and tempering. However, in actual application, the following defects are still found: (1) The equipment can only load, convey, quench and temper one round tube at a time, and cannot realize the loading, conveying, quenching and tempering operations of two round tubes at the same time, so the production efficiency is low; (2) It is impossible to grind the surface of the round tube after quenching, and it is impossible to realize automatic unloading of the double round tubes; (3) It is impossible to realize the stable and uniform forward advancement of the double round tubes at the same time; (4) It is impossible to realize automatic channel dropping when loading the double round tubes. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention proposes a dual-channel high-strength round tube induction quenching equipment, which can realize automatic loading, material separation, stable forward advancement, quenching, tempering, slow cooling, surface grinding and unloading of double round tubes.

[0004] The present invention provides a dual-channel high-strength round tube induction quenching equipment, comprising: a round tube discharging mechanism, the round tube discharging mechanism comprising a discharging rack, a plurality of steel tube placing brackets arranged side by side in a transverse direction are installed on the discharging rack, the steel tube placing brackets are tilted forward, a plurality of blanking guide plates arranged side by side in a transverse direction are installed in front of the steel tube placing brackets, each blanking guide plate is provided with a strip hole in the vertical direction, a front moving cross bar passes through the strip hole of each blanking guide plate in the transverse direction, a moving cross bar push-pull cylinder is installed below the front moving cross bar in the vertical direction and is connected to the front moving cross bar, a plurality of front baffle plates arranged side by side in a transverse direction are installed on the front moving cross bar, and a plurality of front baffle plates arranged side by side in a transverse direction are installed on the discharging rack at the blanking guide plate A rear baffle mounting cross bar is installed at the oblique rear, and a plurality of rear baffles are installed on the rear baffle mounting cross bar; a circular tube channel blanking conveying mechanism is installed on the side of the circular tube discharge mechanism, and the circular tube channel blanking conveying mechanism includes a blanking frame, and two channel blanking assemblies with the same structure are installed in parallel and at intervals on the blanking frame, a first synchronous adjustment assembly is installed between the two channel blanking assemblies, a first conveyor belt device is installed above the first synchronous adjustment assembly and is located between the two channel blanking assemblies, and the channel blanking assembly includes a support plate, and the support plate is installed on the blanking frame, and the wedge guide frame is installed on the support plate, the first blanking assembly and the second blanking assembly are installed in parallel and at intervals on the blanking frame and are located behind the support plate, and the side plates are fixed On the second support plate provided in the second blanking assembly, the second support plate is installed on the telescopic shaft of the vertically arranged second cylinder, and the second cylinder drives the second support plate to drive the side plates to move up and down. A central rotating shaft is installed above the first blanking assembly and the second blanking assembly, and two symmetrically arranged flip plates are respectively fixed on the left and right sides of the central rotating shaft. The two flip plates are connected by multiple connecting rods, and the end of the flip plate is hinged to the top of the pull rod, and the bottom of the pull rod is hinged to the side plate. When the second cylinder drives the second support plate to drive the side plates to move downward, the side plates drive the flip plates to rotate around the central rotating shaft through the pull rod, so that the front end of the flip plate tilts up; when the second cylinder drives the second support plate to drive the side plates to reset, the side plates drive the flip plates to rotate around the central rotating shaft through the pull rod. The turning plate is reset; a round tube conveying mechanism is installed behind the round tube channel blanking conveying mechanism along the round tube conveying direction; a double round tube power propulsion mechanism is installed behind the round tube conveying mechanism along the round tube conveying direction; a double round tube pressing transition mechanism is installed behind the double round tube power propulsion mechanism along the round tube conveying direction; a double round tube friction conveying mechanism is installed behind the double round tube pressing transition mechanism along the round tube conveying direction; a quenching and tempering device is installed behind the double round tube friction conveying mechanism along the round tube conveying direction; a double round tube friction conveying mechanism is installed behind the quenching and tempering device along the round tube conveying direction; a slow cooling unloading mechanism is installed behind the double round tube friction conveying mechanism along the round tube conveying direction; and a unloading buffer mechanism is installed behind the slow cooling unloading mechanism along the round tube conveying direction;And a round tube stacking swing rack installed on one side of the unloading buffer mechanism.

[0005] Preferably, the first blanking assembly includes a first bracket, the first bracket is fixed on the blanking machine frame, the first cylinder is fixed to the first bracket along the vertical direction, the first support plate is fixed on the telescopic axis of the first cylinder, a plurality of first circular tube support blocks distributed in parallel and spaced apart are installed on the first support plate, each first circular tube support block has a V-shaped groove for limiting the circular tube on the top, and a first inclined partition is installed behind the first circular tube support block; the second blanking assembly includes a second bracket, the second bracket is fixed on the blanking machine frame and is located behind the first bracket, the second cylinder is fixed to the second bracket along the vertical direction, the second support plate is fixed on the telescopic axis of the second cylinder, a plurality of second circular tube support blocks distributed in parallel and spaced apart are installed on the second support plate, each second circular tube support block has a V-shaped groove for limiting the circular tube on the top, a vertically arranged second partition is installed in front of the second circular tube support block, a rear baffle is installed behind the second circular tube support block, and the side plates are fixed on the sides of the second support plate.

[0006] Preferably, the first synchronous adjustment component includes a first gearbox fixed on the blanking machine frame, two second gearboxes are symmetrically installed on the front and rear sides of the first gearbox, and synchronous lifting worm gears are symmetrically installed on the left and right sides of each second gearbox, and the synchronous drive motor is installed on the input shaft of the first gearbox, and the output shaft of the first gearbox is connected to the input shaft of the second gearbox through a driving rod, and the output shaft of the second gearbox is connected to the synchronous lifting worm gear through a synchronous connecting rod, and the top of each synchronous lifting worm gear is installed with a connecting flange; the first conveyor belt device includes an outer shell, and a plurality of support ears are installed on the bottom of the outer shell, and the outer shell is docked with the connecting flange at the top of the synchronous lifting worm gear in the first synchronous adjustment assembly through the support ears, and two parallel and spaced annular conveyor belts are installed on the outer shell, and limit baffles are installed on the left and right sides of each annular conveyor belt.

[0007] Preferably, the round tube conveying mechanism includes a conveying frame, a second synchronous adjustment component is installed on the conveying frame, and a second conveyor belt device is installed on the second synchronous adjustment component.

[0008] The top of the support plate is provided with a front mounting frame adjusting hand wheel, and the front mounting frame is connected to the back of the front mounting frame through a front mounting frame adjusting screw rod. The upper conveying roller group and the lower conveying roller group are both provided with two rows of conveying rollers distributed in parallel and spaced apart from each other, and the upper conveying roller group and the lower conveying roller group are respectively connected to the output shaft of the gear box through a transmission coupling, and the upper conveying roller group adjusting cylinder is vertically downwardly installed on the top of the front mounting frame, and the telescopic shaft of the upper conveying roller group adjusting cylinder is connected to the mounting frame of the upper conveying roller group.

[0009] Preferably, the double-tube pressing transition mechanism includes a transition frame, a transition conveying roller mounting frame is installed on the transition frame, two rows of transition conveying rollers spaced apart and distributed in parallel front and back are installed on the transition roller mounting frame, a first crossbeam is installed above the transition frame, a first pressing cylinder arranged vertically downward is installed on the first crossbeam, a pressing bar mounting plate is installed on the telescopic shaft of the first pressing cylinder, and two pressing bars facing the two rows of transition conveying rollers below are installed on the pressing bar mounting plate.

[0010] Preferably, the double-tube friction conveying mechanism includes a conveying frame, on which multiple sets of bearing mounting seats are installed, and four parallel and spaced transmission rods are respectively installed on the bearing mounting seats through bearings, and each transmission rod is installed with a friction wheel, wherein the friction wheels on the first transmission rod and the second transmission rod are fitted together to form a first friction conveying channel for the circular tube, and the friction wheels on the third transmission rod and the fourth transmission rod are fitted together to form a second friction conveying channel for the circular tube, the second crossbeam is installed above the conveying frame, the pressing cylinder is installed vertically downward on the second crossbeam, and the pressing roller assembly is installed on the telescopic shaft of the pressing cylinder and is located above the first friction conveying channel and the second friction conveying channel.

[0011] Preferably, the quenching and tempering device includes a frame; a friction transmission power mechanism installed on the frame, the friction transmission power mechanism includes a power output reduction box installed on the frame, a power output motor is installed on the input shaft of the power output reduction box, the output shaft of the power output reduction box is connected to the power output transmission rod, the power output transmission rod is fixed to the frame through a plurality of power output transmission rod bearing mounting seats arranged in parallel and at intervals, a gear shaft is installed at the end of the power output transmission rod, an active output gear is installed on the gear shaft, four synchronous transmission rods are installed on the frame in parallel and at intervals through synchronous transmission rod bearing seats and are located above the power output transmission rod, each synchronous transmission rod is installed with a friction wheel, wherein the friction wheels on the first synchronous transmission rod and the second synchronous transmission rod are fitted to form a first friction transmission channel of the circular tube, and the friction wheels on the third synchronous transmission rod and the fourth synchronous transmission rod are fitted to form a second friction transmission channel of the circular tube, and synchronous transmission gears are installed on all four synchronous transmission rods Wheel, the synchronous transmission gear is connected to the active output gear on the gear shaft through a synchronous belt; four pressing roller assemblies are installed in parallel and at intervals above the friction conveying mechanism along the conveying direction of the round tube, wherein the first pressing roller assembly and the third pressing roller assembly are located above the first friction conveying channel, and the second pressing roller assembly and the fourth pressing roller assembly are located above the first friction conveying channel; a first quenching mechanism, a second quenching mechanism and a tempering mechanism are installed in parallel and at intervals behind the friction conveying mechanism along the conveying direction of the round tube, wherein the first quenching mechanism is arranged relative to the first friction conveying channel, the second quenching mechanism is arranged relative to the second friction conveying channel, and the tempering mechanism is arranged relative to the first friction conveying channel and the second friction conveying channel at the same time; a tempering cooling water conveying mechanism is installed on one side of the tempering mechanism, and the tempering cooling water conveying mechanism is connected to the spray pipe in the tempering mechanism; a water collecting tank is installed on the frame and located below the friction conveying mechanism, and the water collecting tank is connected to the tempering cooling water conveying mechanism through a pipeline.

[0012] Preferably, the first quenching mechanism and the second quenching mechanism have the same structure, both including a quenching machine XY moving guide rail, a quenching machine displacement drive motor is installed on one side of the quenching machine XY moving guide rail, the quenching machine body is installed on the quenching machine XY moving guide rail, and a quenching ring is installed at the front end of the quenching machine body, wherein the quenching ring at the front end of the first quenching mechanism is arranged opposite to the first friction conveying channel, and the quenching ring at the front end of the second quenching mechanism is arranged opposite to the second friction conveying channel; the tempering mechanism includes a tempering machine XY moving guide rail, and a quenching machine displacement drive motor is installed on one side of the tempering machine XY moving guide rail. It is equipped with a tempering machine displacement drive motor, and the tempering machine body is installed on the tempering machine XY moving guide rail. Two tempering rings are installed at the front end of the tempering machine body, which are respectively arranged opposite to the first friction conveying channel and the second friction conveying channel. A spray pipe is installed on one side of each tempering ring; the tempering cooling water delivery mechanism includes a cooling water tank, and a water pump is provided on one side of the cooling water tank. The water pump is connected to the spray pipe in the tempering mechanism through a water supply pipe, and the water collecting tank is connected to the cooling water tank through a return pipe. The cooling water tank is also connected to an external water source through an external water pipe.

[0013] Preferably, the slow cooling unloading mechanism includes a slow cooling rack, on which are installed a plurality of slow cooling transmission rod bearing seats arranged in parallel and at intervals along the conveying direction of the round tube, four slow cooling transmission rods are installed in parallel and at intervals on the slow cooling rack through the slow cooling transmission rod bearing seats, and each slow cooling transmission rod is equipped with a slow cooling friction wheel, wherein the slow cooling friction wheels on the first slow cooling transmission rod and the second slow cooling transmission rod are fitted together to form the first slow cooling friction conveying channel for the round tube, and the slow cooling friction wheels on the third slow cooling transmission rod and the fourth slow cooling transmission rod are fitted together. After that, a second slow cooling friction conveying channel for the round tube is formed, and a polishing slow cooling device is installed on the slow cooling frame. The polishing slow cooling device includes four supporting guide rods installed on the slow cooling frame along a square distribution, a top plate is installed on the top of the supporting guide rod, and a movable mounting plate is connected to the supporting guide rod through a guide sleeve. Two groups of upper polishing rollers are installed on the bottom of the movable mounting plate. The two groups of upper polishing rollers are respectively located above the first slow cooling friction conveying channel and the second slow cooling friction conveying channel. The two groups of upper polishing rollers are transmitted between the upper polishing rollers through the upper polishing rollers. The upper grinding roller is connected with the moving rod, one end of the upper grinding roller transmission rod is connected with the upper grinding roller driving motor, the lower grinding roller mounting seat is installed on the slow cooling frame, and two groups of lower grinding rollers are installed on the lower grinding roller mounting seat and are respectively located below the first slow cooling friction conveying channel and the second slow cooling friction conveying channel. The slow cooling frame is also equipped with an upper unloading device, which is installed below the first slow cooling friction conveying channel and the second slow cooling friction conveying channel; the upper unloading device includes a cylinder mounting seat, and the cylinder mounting seat The seat is fixed on the slow cooling rack or the cache rack, the first unloading cylinder mounting inclined plate is installed on the cylinder mounting seat, the first unloading cylinder is installed obliquely upward on the first unloading cylinder mounting inclined plate and is located below the first slow cooling friction conveying channel, the first round tube head is installed on the telescopic shaft of the first unloading cylinder, the second unloading cylinder is installed vertically upward on the cylinder mounting seat and is located below the second slow cooling friction conveying channel, the second round tube head is installed on the telescopic shaft of the second unloading cylinder, and the top surface of the second round tube head is set to be an inclined surface.

[0014] Preferably, the unloading cache mechanism includes a cache rack, on which a plurality of support rollers are installed along the conveying direction of the round tube, and a top unloading device is installed below the support rollers on the cache rack, and a guide plate biased toward the round tube stacking rack is installed on the end edge of the cache rack.

[0015] The beneficial effects of the dual-channel high-strength round tube induction quenching equipment provided by the present invention are:

[0016] (1) This dual-channel high-strength round tube induction quenching equipment has a reasonable design and simple structure, and can realize automatic loading, material distribution, stable forward advancement, quenching, tempering, slow cooling, surface grinding, and unloading of double round tubes. During actual work, it is only necessary to place the round tube that needs to be loaded on the round tube discharging mechanism, discharge it through the round tube discharging mechanism, and then drop the two round tubes into two branch blanking assemblies with the same structure through the round tube branch blanking conveying mechanism, and then convey the two round tubes to the round tube conveying mechanism installed behind the round tube branch blanking conveying mechanism through the first conveyor belt device in the round tube branch blanking conveying mechanism. The two round tubes are conveyed forward at the same time through the round tube conveying mechanism, and the steady advancement of the double round tubes is achieved at the same time through the cooperation between the double round tube power propulsion mechanism, the double round tube pressing transition mechanism and the double round tube friction conveying mechanism. The high-frequency quenching and tempering cooling of the double round tubes are achieved through the quenching and tempering device; the surface of the double round tubes after tempering is polished through the slow cooling unloading mechanism, and the stable advancement, cooling and unloading of the two round tubes are achieved at the same time. The degree of automation is high and the efficiency of round tube quenching and tempering is high.

[0017] (2) The present invention can realize automatic and one-by-one discharge of round tubes through the structural design of the round tube discharge mechanism. Moreover, the round tube discharge mechanism has a simple structure and makes full use of the gravity of the round tubes themselves to discharge the tubes one by one without the use of manual labor or manipulators. The discharge speed is fast and the efficiency is high.

[0018] (3) The present invention can realize the separate dropping of round tubes through the structural design of the round tube drop conveying mechanism, ensuring that two different round tubes are stably dropped into two different round tube conveying channels, thereby improving the efficiency of round tube conveying.

[0019] (4) The present invention can realize the stable and uniform forward propulsion of the double-tubes through the structural design of the double-tube power propulsion mechanism, the double-tube pressing transition mechanism and the double-tube friction conveying mechanism, thereby improving the quality of the double-tube quenching.

[0020] (5) The present invention can realize the stable and uniform forward propulsion of the double round tubes through the structural design of the quenching and tempering device, and simultaneously realize the stable propulsion of the two round tubes and the simultaneous quenching, tempering, cooling and other operations, thereby achieving high production efficiency.

[0021] (6) The present invention can polish the surface of the double round tubes after tempering and simultaneously realize stable forward cooling and unloading of the two round tubes through the structural design of the slow cooling unloading mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2It is a three-dimensional structural diagram of the round tube unloading mechanism, the round tube channel blanking and conveying mechanism and the round tube conveying mechanism in the present invention.

[0024] Figure 3 It is a front view of the three-dimensional structure of the round tube discharging mechanism of the present invention.

[0025] Figure 4 It is a rear view of the three-dimensional structure of the round tube discharging mechanism of the present invention.

[0026] Figure 5 It is a partial structural diagram of the round tube unloading mechanism of the present invention when the front baffle plate falls to the lowest position.

[0027] Figure 6 It is a three-dimensional structural diagram of the round tube channel blanking and conveying mechanism of the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the channel blanking assembly in the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the first blanking component in the present invention.

[0030] Figure 9 It is a schematic diagram of the three-dimensional structure of the second blanking assembly in the present invention.

[0031] Figure 10 It is a schematic diagram of the three-dimensional structure of the first synchronous adjustment component in the present invention.

[0032] Figure 11 It is a schematic diagram of the three-dimensional structure of the first conveyor belt device in the present invention.

[0033] Figure 12 It is a schematic diagram of the three-dimensional structure of the round tube conveying mechanism in the present invention.

[0034] Figure 13 It is a three-dimensional structural diagram of the double-tube power propulsion mechanism, the double-tube material pressing transition mechanism, the double-tube friction conveying mechanism and the friction conveying power mechanism in the present invention.

[0035] Figure 14 It is a three-dimensional structural diagram of the double-tube power propulsion mechanism and the double-tube pressing and transition mechanism in the present invention.

[0036] Figure 15 It is a rear view of the three-dimensional structure of the double-tube friction conveying mechanism of the present invention.

[0037] Figure 16 It is a front view of the three-dimensional structure of the friction transmission power mechanism in the present invention.

[0038] Figure 17 It is a rear view of the three-dimensional structure of the friction transmission power mechanism of the present invention.

[0039] Figure 18 It is a schematic diagram of the three-dimensional structure of the pressing roller assembly in the present invention.

[0040] Figure 19 It is a schematic diagram of the three-dimensional structure of the quenching and tempering device in the present invention.

[0041] Figure 20 It is a front view of the internal structure installation three-dimensional structure of the quenching and tempering device in the present invention.

[0042] Figure 21 It is a rear view of the internal structure installation three-dimensional structure of the quenching and tempering device in the present invention.

[0043] Figure 22 It is a schematic diagram of the three-dimensional structural installation of the first quenching mechanism, the second quenching mechanism and the tempering mechanism in the present invention.

[0044] Figure 23 It is a three-dimensional structural schematic diagram of the slow cooling unloading mechanism, the unloading buffer mechanism and the round tube stacking swing rack in the present invention.

[0045] Figure 24 It is a three-dimensional structural schematic diagram of the slow cooling unloading mechanism in the present invention.

[0046] Figure 25 It is a schematic diagram of the three-dimensional structure of the polishing slow cooling device in the present invention.

[0047] Figure 26 It is a schematic diagram of the three-dimensional structure of the top unloading device in the present invention.

[0048] Figure 27 It is a schematic diagram of the three-dimensional structure of the round tube stacking swing rack in the present invention.

[0049] Figure: 1. Round tube unloading mechanism; 11. Unloading rack; 12. Steel tube placement bracket; 13. Blanking guide plate; 14. Strip hole; 15. Front moving crossbar; 16. Front baffle; 17. Cylinder for moving crossbar push and pull; 18. Rear baffle mounting crossbar; 19. Rear baffle.

[0050] 2. Round tube blanking conveying mechanism; 21. Blanking rack; 22. Channel blanking assembly; 221. Support plate; 222. Wedge-shaped guide frame; 223. First blanking assembly; 2231. First bracket; 2232. First cylinder; 2233. First support plate; 2234. First round tube support block; 2235. First partition; 224. Second blanking assembly; 2241. Second bracket; 2242. Second cylinder; 2243. Second support plate; 2244. Second round tube support block; 2245. Third bracket; 22 46. ​​Second partition; 225. Side panel; 226. Pull rod; 227. Turn plate; 228. Center shaft; 229. Rear baffle; 23. First synchronous adjustment assembly; 231. Synchronous drive motor; 232. First gearbox; 233. Drive rod; 234. Second gearbox; 235. Synchronous connecting rod; 236. Synchronous lifting worm gear; 237. Connecting flange; 24. First conveyor belt assembly; 241. Outer shell; 242. Endless conveyor belt; 243. Limit baffle; 244. Support lug;

[0051] 3. Round tube conveying mechanism; 31. Conveyor frame; 32. Second synchronous adjustment component; 33. Second conveyor belt device;

[0052] 4. Double-tube propulsion mechanism; 41. Propulsion frame; 42. Gearbox; 43. Propulsion motor; 44. Drive coupling; 45. Support plate; 46. Slide rail; 47. Front mounting frame; 48. Upper conveyor roller assembly adjustment cylinder; 49. Front mounting frame adjustment handwheel; 410. Front mounting frame adjustment screw; 411. Upper conveyor roller assembly; 412. Lower conveyor roller assembly;

[0053] 5. Double-tube pressing transition mechanism; 51. Transition frame; 52. Transition conveyor roller mounting frame; 53. Transition conveyor roller; 54. First crossbeam; 55. First pressing cylinder; 56. Pressing bar mounting plate; 57. Pressing bar;

[0054] 6. Double-tube friction conveying mechanism; 61. Conveyor frame; 62. Bearing mounting seat; 63. Bearing; 64. Transmission rod; 65. Friction wheel; 66. Second crossbeam; 67. Press roller assembly; 671. Press cylinder; 672. Press roller mounting bracket; 673. Universal wheel mounting column; 674. Universal roller; 675. Tube shield; 69. Coupling;

[0055] 7. Quenching and tempering device; 71. Friction transmission power mechanism; 711. Power transmission mounting frame; 712. Power output reduction gearbox; 713. Power output transmission rod bearing mounting seat; 714. Power output transmission rod; 715. Gear shaft; 716. Active output gear; 717. Synchronous belt; 718. Synchronous transmission gear; 719. Synchronous transmission rod; 7110. Synchronous transmission rod bearing seat; 7111. Transmission friction wheel; 7112. Power output motor; 72. First quenching mechanism; 721. Quenching machine Displacement drive motor; 722, quenching machine XY moving guide rail; 723, quenching machine body; 724, quenching ring; 73, second quenching mechanism; 74, tempering mechanism; 741, tempering machine displacement drive motor; 742, tempering machine XY moving guide rail; 743, tempering machine body; 744, tempering ring; 745, spray pipe; 75, tempering cooling water delivery mechanism; 751, cooling water tank; 752, water pump; 753, water supply pipe; 754, water return pipe; 755, external water pipe; 76, outer cover; 77, water collection tank;

[0056] 8. Slow cooling unloading mechanism; 81. Slow cooling frame; 82. Slow cooling transmission rod bearing seat; 83. Slow cooling transmission rod; 84. Slow cooling friction wheel; 85. Coupling; 86. Polishing and slow cooling device; 861. Guide rod; 862. Top plate; 863. Movable mounting plate; 864. Guide sleeve; 865. Adjusting screw; 866. Adjusting handwheel; 867. Upper polishing roller drive motor; 868. Upper polishing roller; 869. Upper polishing roller transmission rod; 8610. Lower polishing roller mounting seat; 8611. Lower polishing roller; 87. Upper unloading device; 871. Cylinder mounting seat; 872. First unloading cylinder mounting ramp; 873. First unloading cylinder; 874. First round pipe jacking head; 875. Second unloading cylinder; 876. Second round pipe jacking head; 88. Unloading guide plate;

[0057] 9. Unloading buffer mechanism; 91. Buffer rack; 92. Support roller; 93. Guide plate;

[0058] 10. Round tube stacking rack; 20. Control center. DETAILED DESCRIPTION

[0059] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary persons in this field without creative work are within the scope of protection of the present invention.

[0060] Embodiment: A dual-channel high-strength round tube induction quenching equipment.

[0061] Reference Figures 1 to 27As shown, a dual-channel high-strength round tube induction quenching equipment includes:

[0062] Round tube unloading mechanism 1 (refer to Figures 2 to 5 As shown), the round tube unloading mechanism 1 includes a unloading rack 11, on which a plurality of steel tube placing brackets 12 are installed, which are spaced side by side in a transverse direction. The steel tube placing brackets 12 are tilted forward, so that the round tubes placed on the steel tube placing brackets 12 can always roll forward under the action of gravity, so as to facilitate the subsequent round tubes to be loaded one by one under the action of gravity. A plurality of blanking guide plates 13 are installed in front of the steel tube placing brackets 12 in a transverse direction. The top of the blanking guide plate 13 is set to tilt forward to facilitate the round tube to slide down naturally after entering the blanking guide plate 13. Each blanking guide plate 13 is provided with a strip hole 14 in the vertical direction, and the front movable cross bar 15 passes through each blanking guide plate 13 in the transverse direction. The strip hole 14 and the moving cross bar push-pull cylinder 17 are installed in the vertical direction below the front moving cross bar 15 and are connected to the front moving cross bar 15. During actual work, the front moving cross bar 15 can be driven to move up and down in the strip hole 14 of the blanking guide 13 by the moving cross bar push-pull cylinder 17. A plurality of front baffles 16 spaced side by side are installed horizontally on the front moving cross bar 15. The function of the front baffle 16 is to control the timing of the round tube entering the blanking guide 13. A rear baffle mounting cross bar 18 is installed on the discharging frame 11 at the oblique rear of the blanking guide 13. A plurality of rear baffles 19 spaced side by side are installed on the rear baffle mounting cross bar 18. The function of the rear baffle 19 is to block the round tube from rolling downward from the steel pipe placing bracket 12. During actual work, the round tubes that need to be quenched are placed on the steel tube placing bracket 12 and blocked by the rear baffle 16. When loading is required, the moving crossbar push-pull cylinder 17 drives the front moving crossbar 15 to drive the front baffle 16 to move downward. When the front baffle 16 is lower than the position of the blanking guide 13, the round tubes fall into the subsequent round tube blanking conveying mechanism 2 along the blanking guide 13 under the action of gravity. When the moving crossbar push-pull cylinder 17 drives the front moving crossbar 15 to drive the front baffle 16 to the lowest position, the position of the front baffle 16 is lowered. When the front baffle plate 16 is reset, the round tube can be lifted up by the front baffle plate 16 and placed on the blanking guide plate 13 by this cycle. The round tube can be discharged automatically and one by one. Moreover, the round tube discharge mechanism 1 has a simple structure and makes full use of the gravity of the round tube to discharge the materials one by one. No manual labor or robot is required, and the discharge speed is fast and the efficiency is high.

[0063] The round tube channel blanking conveying mechanism 2 installed in front of the round tube discharge mechanism 1, refer to Figure 5As shown, the circular tube channel blanking conveying mechanism 2 includes a blanking frame 21, on which two channel blanking assemblies 22 of the same structure are installed in parallel and at intervals. A first synchronous adjustment assembly 23 is installed between the two channel blanking assemblies 22, and a first conveyor belt device 24 is installed above the first synchronous adjustment assembly 23 and located between the two channel blanking assemblies 22. The channel blanking assemblies 22 are used for channel blanking of two circular tubes, and the first synchronous adjustment assembly 23 is used to adjust the upper and lower positions of the first conveyor belt device 24. The first conveyor belt device 24 is used to convey the two circular tubes that fall into the channel blanking assemblies 22 forward. In actual operation, after the circular tube discharge mechanism 1 discharges the materials, the channel blanking assemblies 22 in the circular tube channel blanking conveying mechanism 2 can drop the two circular tubes respectively to the corresponding conveying tracks, and then the first conveyor belt device 24 can transport the two circular tubes to the circular tube conveying mechanism 3 installed behind the circular tube channel blanking conveying mechanism 2.

[0064] Reference Figures 6 to 9As shown, the lane blanking assembly 22 includes a support plate 221, the support plate 221 is mounted on the blanking machine frame 21, the wedge-shaped guide frame 222 is mounted on the support plate 221, the first blanking assembly 223 and the second blanking assembly 224 are installed in parallel and spaced apart on the blanking machine frame 21 and are located behind the support plate 221, the first blanking assembly 223 includes a first bracket 2231, the first bracket 2231 is fixed on the blanking machine frame 21, the first cylinder 2232 is fixed on the first bracket 2231 in the vertical direction, and the first support plate 2233 is fixed on the first bracket 2231. On the telescopic axis of a cylinder 2232, a plurality of first circular tube support blocks 2234 are installed on the first support plate 2233 and are distributed in parallel and at intervals. A V-shaped groove for limiting the circular tube is provided on the top of each first circular tube support block 2234, and a first partition plate 2235 is installed at an angle behind the first circular tube support block 2234. During actual operation, the first cylinder 2232 can drive the first support plate 2233 to drive the first circular tube support block 2234 to move up and down, and the V-shaped grooves provided on the tops of the plurality of first circular tube support blocks 2234 form the first blanking limiting channel for the circular tube. The second blanking assembly 224 includes a second bracket 2241, which is fixed to the blanking machine frame 21 and located behind the first bracket 2231. The second cylinder 2242 is fixed to the second bracket 2241 in the vertical direction. The second support plate 2243 is fixed to the telescopic shaft of the second cylinder 2242. A plurality of second circular tube support blocks 2244 distributed in parallel and at intervals are installed on the second support plate 2243. A V-shaped groove for limiting the position of the circular tube is provided on the top of each second circular tube support block 2244. A vertically arranged second partition plate 2246 is installed in front of the second circular tube support block 2244. A rear baffle 229 is installed behind the second circular tube support block 2244, and the side panels 225 are fixed on the sides of the second support plate 2243. The second cylinder 2242 can drive the second support plate 2243 to drive the side panels 225 to move up and down. A central rotating shaft 228 is installed above the first blanking assembly 223 and the second blanking assembly 224. Two symmetrically arranged flip plates 227 are respectively fixed on the left and right sides of the central rotating shaft 228. The two flip plates 227 are connected by multiple connecting rods. The end of the flip plate 227 is hinged to the top of the pull rod 226, and the bottom of the pull rod 226 is hinged to the side panel 225.During actual operation, when the second cylinder 2242 drives the second support plate 2243 to drive the side plate 225 to move downward, the side plate 225 drives the flip plate 227 to rotate around the central rotation axis 228 through the pull rod 226, so that the front end of the flip plate 227 is tilted. At this time, the round tube discharge mechanism 1 discharges the material, and the round tube is guided by the wedge-shaped guide frame 222 and falls into the first blanking limit channel formed by the V-shaped groove set on the top of the first round tube support block 2234 in the first blanking assembly 223; after the first round tube falls into the first blanking limit channel, the second cylinder 2242 drives the second support plate 2243 to drive the side plate 225 to move downward, and the side plate 225 drives the flip plate 227 to rotate around the central rotation axis 228 through the pull rod 226, so that the front end of the flip plate 227 is tilted. The cylinder 2242 drives the second support plate 2243 to drive the side plate 225 to reset. The side plate 225 drives the flip plate 227 to rotate around the central axis 228 through the pull rod 226, so that the flip plate 227 is reset. At this time, the round tube discharge mechanism 1 discharges again, and the round tube falls into the second blanking limit channel formed by the V-shaped groove set on the top of the second round tube support block 2244 in the second blanking assembly 224, thereby completing the automatic blanking and separation of the two round tubes, and accurately falling into different limit channels.

[0065] Reference Figure 10 As shown, the first synchronous adjustment component 23 includes a first gearbox 232 fixed on the blanking machine frame 21, and two second gearboxes 234 are symmetrically installed on the front and rear sides of the first gearbox 232, and synchronous lifting worm gears 236 are symmetrically installed on the left and right sides of each second gearbox 234. The four synchronous lifting worm gears 236 are distributed in a square. The synchronous drive motor 231 is installed on the input shaft of the first gearbox 232, and the output shaft of the first gearbox 232 is connected to the input shaft of the second gearbox 234 through the drive rod 233. The output shaft of the second gearbox 234 is connected to the synchronous lifting worm gear 236 through the synchronous connecting rod 235, and the top of the worm of each synchronous lifting worm gear 236 is installed with a connecting flange 237. During actual operation, the first gearbox 232 is driven to rotate by the synchronous drive motor 231, and the first gearbox 232 drives the two second gearboxes 234 to rotate synchronously. Then, the two second gearboxes 234 can drive the four synchronous lifting worm gears 236 to rise and fall synchronously, and then the first conveyor belt device 24 installed above the first synchronous adjustment component 23 can be adjusted to move up and down stably to adapt to the transportation requirements of round tubes of different models.

[0066] Reference Figure 11As shown, the first conveyor belt device 24 includes an outer shell 241, and a plurality of lugs 244 are installed at the bottom of the outer shell 241. The outer shell 241 is connected to the connecting flange 237 at the top of the synchronous lifting worm gear 236 in the first synchronous adjustment assembly 23 through the lugs 244. Two parallel and spaced-apart annular conveyor belts 242 are installed on the outer shell 241, and limit baffles 243 are installed on the left and right sides of each annular conveyor belt 242. In actual operation, when two round tubes fall into the first and second blanking limiting channels respectively, that is, fall exactly onto the two parallel and spaced-apart annular conveyor belts 242, the two continuously circularly rotating annular conveyor belts 242 can drive the round tubes that fall onto the annular conveyor belts 242 to move forward, and the limit baffles 243 can limit the round tubes.

[0067] Reference Figure 1 and Figure 11 As shown, the round tube conveying mechanism 3 is installed behind the round tube channel blanking conveying mechanism 2 along the round tube conveying direction. The round tube conveying mechanism 3 includes a conveyor frame 31, on which is mounted a second synchronous adjustment assembly 32, on which is mounted a second conveyor belt device 33. The structure of the second synchronous adjustment assembly 32 is identical to that of the first synchronous adjustment assembly 23, and the second conveyor belt device 33 is identical to that of the first conveyor belt device 24. In actual operation, the second synchronous adjustment assembly 32 can stably adjust the height of the second conveyor belt device 33. When the round tube enters the endless conveyor belt provided on the second conveyor belt device 33, the endless conveyor belt drives the round tube to continue moving forward.

[0068] Reference Figure 13 and Figure 14As shown, the double-tube power propulsion mechanism 4 includes a propulsion frame 41, a gear box 42 is installed on the propulsion frame 41, a propulsion motor 43 is installed on the input shaft of the gear box 42, a plurality of output shafts are provided on the front side of the gear box 42, a support plate 45 is installed in front of the gear box 42, two slide rails 46 spaced side by side and vertically downward are installed on the support plate 45, a front mounting frame 47 is installed on the slide rail 46, a front mounting frame adjustment hand wheel 49 is installed on the top of the support plate 45, and the front mounting frame adjustment hand wheel 49 is connected to the front mounting frame 4 through the front mounting frame adjustment screw rod 410. 7 is connected to the back of the front mounting frame 47, and the upper conveying roller group 411 and the lower conveying roller group 412 are installed on the front mounting frame 47, and the upper conveying roller group 411 and the lower conveying roller group 412 are each provided with two rows of conveying rollers distributed in parallel and at intervals front and back, and the upper conveying roller group 411 and the lower conveying roller group 412 are respectively connected to the output shaft of the gear box 42 through the transmission coupling 44, and the upper conveying roller group adjusting cylinder 48 is vertically downwardly installed on the top of the front mounting frame 47, and the telescopic shaft of the upper conveying roller group adjusting cylinder 48 is connected to the mounting frame of the upper conveying roller group 411. In actual operation, the front mounting frame adjustment hand wheel 49 drives the front mounting frame adjustment screw 410 to adjust the vertical position of the front mounting frame 47, thereby adjusting the vertical positions of the upper conveying roller group 411 and the lower conveying roller group 412 installed on the front mounting frame 47. The upper conveying roller group adjustment cylinder 48 can adjust the distance between the upper conveying roller group 411 and the lower conveying roller group 412 to better clamp the round tube. When the two round tubes are clamped by the upper conveying roller group 411 and the lower conveying roller group 412, the propulsion motor 43 drives the gear box 42 to rotate. The gear box 42 drives the conveying rollers in the upper conveying roller group 411 and the lower conveying roller group 412 to rotate through the transmission coupling 44, thereby pushing the two round tubes clamped between the upper conveying roller group 411 and the lower conveying roller group 412 to move forward stably.

[0069] Reference Figure 13 and Figure 15As shown, the double-tube pressing and transition mechanism 5 is installed behind the double-tube power propulsion mechanism 4 along the direction of tube conveying. The double-tube pressing and transition mechanism 5 includes a transition frame 51, on which a transition conveying roller mounting frame 52 is mounted, and on which two rows of transition conveying rollers 53 are mounted that are spaced apart and arranged in parallel with each other. A first crossbeam 54 is mounted above the transition frame 51, and a first pressing cylinder 55 is mounted vertically downward on the first crossbeam 54. A pressing bar mounting plate 56 is mounted on the telescopic shaft of the first pressing cylinder 55, and two pressing bars 57 facing the two rows of transition conveying rollers below are mounted on the pressing bar mounting plate 56. During actual operation, the first pressing cylinder 55 pushes down the two pressing bars 57 on the pressing bar mounting plate 56 that face the two rows of transition conveying rollers below, ensuring that the two round tubes are stably conveyed forward in the transition conveying rollers 53.

[0070] Reference Figure 15 As shown, the double-tube friction conveying mechanism 6 is installed behind the double-tube pressing transition mechanism 5 along the round tube conveying direction, and the double-tube friction conveying mechanism 5 includes a conveying frame 61, and multiple groups of bearing mounting seats 62 are installed on the conveying frame 61. Four parallel and spaced transmission rods 64 are respectively installed on the bearing mounting seats 62 through bearings 63, and each transmission rod 64 is installed with a friction wheel 65, wherein the friction wheels 65 on the first transmission rod 64 and the second transmission rod 64 are fitted to form a first friction conveying channel for the round tube, and the friction wheels 65 on the third transmission rod 64 and the fourth transmission rod 64 are fitted to form a second friction conveying channel for the round tube, and the second crossbeam 66 is installed above the conveying frame 61, and the pressing roller assembly 67 is vertically downwardly installed on the second crossbeam 66 and is located above the first friction conveying channel and the second friction conveying channel. During actual operation, the double round tubes enter the first friction conveying channel and the second friction conveying channel in the double round tube friction conveying mechanism 6 in parallel after passing through the transition of the double round tube pressing transition mechanism 5. When the friction wheels 65 on the first transmission rod 64 and the second transmission rod 64 rotate, they cooperate with the pressing roller assembly 67 to make the round tubes located in the first friction conveying channel move forward stably and uniformly. At the same time, when the friction wheels 65 on the third transmission rod 64 and the fourth transmission rod 64 rotate, they cooperate with the pressing roller assembly 67 to make the round tubes located in the second friction conveying channel move forward stably and uniformly.

[0071] Reference Figure 18As shown, in this embodiment, the press roller assembly 67 includes a press cylinder 671, a press roller mounting frame 672 mounted on the telescopic shaft of the press cylinder 671, and four universal wheel mounting posts 673 arranged in a square and downwardly disposed are mounted on the press roller mounting frame 672. A universal roller 674 is mounted at the bottom of each universal wheel mounting post 673, and a circular tube shield 675 is mounted between two longitudinally distributed universal rollers 674. During actual operation, the press cylinder 671 drives the press roller mounting frame 672 downwardly, causing the universal rollers 674 mounted on the four universal wheel mounting posts 673 arranged in a square and downwardly disposed to contact the top of the circular tubes in the first friction conveying channel and the second friction conveying channel. Then, in conjunction with the rotation of the friction wheel 65, the circular tubes can be continuously and stably moved forward under the action of friction.

[0072] Reference Figures 13 to 22 As shown, the quenching and tempering device 7 includes a friction transmission power mechanism 71 , a first quenching mechanism 72 , a second quenching mechanism 73 , a tempering mechanism 74 and a tempering cooling water transmission mechanism 75 .

[0073] Reference Figure 13 、 Figure 16 and Figure 17As shown, the friction conveying power mechanism 71 is installed at the rear of the double-tube friction conveying mechanism 6 along the circular tube conveying direction, and the friction conveying power mechanism 71 includes a power conveying mounting frame 711, and a power output reduction box 712 is installed at the bottom of the power conveying mounting frame 711. The input shaft end of the power output reduction box 712 is installed with a power output motor 7112, and the output shaft of the power output reduction box 712 is connected to the power output transmission rod 714, and the power output transmission rod 714 is installed on the power output transmission rod bearing mounting seat 713 through the power output transmission rod bearing mounting seat 713. The power output transmission rod bearing mounting seat 713 is installed on the power conveying mounting frame 711, and a gear shaft 715 is installed at the end of the power output transmission rod 714. An active output gear 716 is installed on the gear shaft 715, and four synchronous transmission rods 719 are installed in parallel and at intervals on the power conveying mounting frame 7110 through the synchronous transmission rod bearing seat 7110. The mounting frame 711 is located above the power output transmission rod 714, and the four synchronous transmission rods 719 are each equipped with a synchronous transmission gear 718. The synchronous transmission gear 718 is respectively connected to the active output gear 716 on the gear shaft 715 through a synchronous belt 717. Each synchronous transmission rod 719 is correspondingly connected to the transmission rod 64 in the double-tube friction conveying mechanism 6 through a coupling 69. A transmission friction wheel 7111 is installed on each synchronous transmission rod 719. The transmission friction wheels 7111 on the first synchronous transmission rod 719 and the second synchronous transmission rod 719 are fitted together to form a first friction conveying channel for the circular tube. The transmission friction wheels 7111 on the third synchronous transmission rod 719 and the fourth synchronous transmission rod 719 are fitted together to form a second friction conveying channel for the circular tube. A pressing roller assembly 67 is correspondingly installed above the first friction conveying channel and the second friction conveying channel. During actual operation, the power output motor 7112 drives the power output reduction box 712 to drive the power output transmission rod 714 to rotate, and the active output gear 716 on the power output transmission rod 714 drives the four synchronous transmission rods 719 to rotate through the synchronous belt 717 and the synchronous transmission gear 718. The four synchronous transmission rods 719 respectively drive the four transmission rods 64 in the double-tube friction conveying mechanism 6 to rotate. When the friction wheels 65 on the four transmission rods 64 rotate, they cooperate with the pressing roller assembly 67 to make the round tubes located in the two friction conveying channels move forward stably and at a uniform speed. At the same time, the transmission friction wheels 7111 in the first friction conveying channel and the second friction conveying channel cooperate with the pressing roller assembly 67 to realize the stable and uniform forward movement of the double round tubes in the first friction conveying channel and the second friction conveying channel.

[0074] Reference Figures 20 to 22As shown, the first quenching mechanism 72, the second quenching mechanism 73, the tempering mechanism 74 and the tempering cooling water delivery mechanism 75 are installed in parallel and at intervals behind the friction delivery mechanism 71 along the round tube delivery direction, wherein the first quenching mechanism 72 is arranged relative to the first friction delivery channel, the second quenching mechanism 73 is arranged relative to the second friction delivery channel, and the tempering mechanism 73 is arranged relative to both the first friction delivery channel and the second friction delivery channel.

[0075] Reference Figure 22 As shown, the first quenching mechanism 72 and the second quenching mechanism 73 have the same structure, both including a quenching machine XY movable guide rail 722, a quenching machine displacement drive motor 721 mounted on one side of the quenching machine XY movable guide rail 722, and a quenching machine body 723 mounted on the quenching machine XY movable guide rail 722. A quenching ring 724 is mounted at the front end of the quenching machine body 723. The quenching ring 724 at the front end of the first quenching mechanism 72 is positioned directly opposite the first friction conveying channel, while the quenching ring 724 at the front end of the second quenching mechanism 73 is positioned directly opposite the second friction conveying channel. In actual operation, the quenching machine displacement drive motor 721 drives the quenching machine XY movable guide rail 722 to adjust the specific position of the quenching machine body 723. During quenching, the quenching machine body 723 contacts the round tube through the quenching ring 724, achieving high-frequency induction quenching.

[0076] The tempering mechanism 74 includes an XY-track 742 for the tempering machine, with a tempering machine displacement drive motor 741 mounted on one side. A tempering machine body 743 is mounted on the XY-track 742. Two tempering rings 744 are mounted at the front end of the tempering machine body 743, facing the first and second friction conveying channels, respectively. A spray pipe 745 is mounted on one side of each tempering ring 744. During operation, the tempering machine displacement drive motor 741 drives the XY-track 742 for adjusting the position of the tempering machine body 743. During tempering, the tempering machine body 743 contacts the circular tube through the tempering rings 744, achieving tempering. Spray pipes 745 mounted on one side of the tempering rings 744 continuously spray water to cool the tempered circular tube.

[0077] The tempering cooling water delivery mechanism 75 is connected to the spray pipe 745 in the tempering mechanism 74. A water collection tank 76 is installed below the friction delivery mechanism 71. The water collection tank 76 and the tempering cooling water delivery mechanism 75 are connected by a pipeline. The tempering cooling water delivery mechanism 75 includes a cooling water tank 751. A water pump 752 is installed on one side of the cooling water tank 751. The water pump 752 is connected to the spray pipe 745 in the tempering mechanism 74 via a water supply pipe 753. The water collection tank 76 is connected to the cooling water tank 751 via a return pipe 754. The cooling water tank 751 is also connected to an external water source via an external water pipe 755. During actual operation, the water pump 752 continuously supplies water to the spray pipe 745. After the cooling water is collected by the water collection tank 76, it is returned to the cooling water tank 751 via the return pipe 754, realizing the recycling of the cooling water. Fresh cooling water can also be replenished through the external water pipe 755.

[0078] In this embodiment, outer covers 77 are installed on the outer sides of the friction transmission power mechanism 71 , the first quenching mechanism 72 , the second quenching mechanism 73 , the tempering mechanism 74 and the tempering cooling water transmission mechanism 75 . The outer covers 77 are provided to ensure complete operation.

[0079] Reference Figures 23 to 27As shown, the slow cooling unloading mechanism 8 includes a slow cooling frame 81, on which are installed a plurality of slow cooling transmission rod bearing seats 82 arranged in parallel and spaced along the conveying direction of the round tube. Four slow cooling transmission rods 83 are installed in parallel and spaced on the slow cooling frame 81 through the slow cooling transmission rod bearing seats 82. A slow cooling friction wheel 84 is installed on each slow cooling transmission rod 83, wherein the slow cooling friction wheels 84 on the first slow cooling transmission rod 83 and the second slow cooling transmission rod 83 are fitted together to form the first slow cooling friction conveying channel for the round tube. The third slow cooling transmission rod 83 and the slow cooling friction wheel 84 on the fourth slow cooling transmission rod 83 are fitted together to form the second slow cooling friction conveying channel for the round tube. A polishing slow cooling device 86 is installed on the slow cooling frame 81. The polishing slow cooling device 86 includes four support guide rods 861 distributed along a square and installed on the slow cooling frame 81. A top plate 862 is installed on the top of the support guide rod 861. The movable mounting plate 863 is sleeved on the support guide rod 861 through a guide sleeve 864. The center of the top plate 862 is installed There is an adjusting hand wheel 866, the end of which is provided with a screw rod 865, the bottom of which is connected to the movable mounting plate 863 through a screw rod pair. In actual operation, the working height of the movable mounting plate 863 can be adjusted by adjusting the hand wheel 866, thereby adjusting the distance between the upper polishing roller 868 and the lower polishing roller 8611, so as to adapt to the requirements of polishing different round tube surfaces. Two sets of upper polishing rollers 868 are installed at the bottom of the movable mounting plate 863. They are respectively located above the first slow cooling friction conveying channel and the second slow cooling friction conveying channel. The two groups of upper polishing rollers 868 are connected by an upper polishing roller transmission rod 869. One end of the upper polishing roller transmission rod 869 is connected to the upper polishing roller drive motor 867. The lower polishing roller mounting seat 8610 is installed on the slow cooling frame 81. The two groups of lower polishing rollers 8611 are installed on the lower polishing roller mounting seat 8610 and are respectively located below the first slow cooling friction conveying channel and the second slow cooling friction conveying channel. During actual operation, the friction conveying mechanism 6 conveys the round tube to the first slow cooling friction conveying channel and the second slow cooling friction conveying channel, and respectively enters the polishing channel composed of the lower polishing roller 8611 and the upper polishing roller 868 in the first slow cooling friction conveying channel and the second slow cooling friction conveying channel, and the upper polishing roller drive motor 867 is used to drive the upper polishing roller 868 to rotate, and the upper polishing roller 868 and the lower polishing roller 8611 cooperate to realize the polishing of the surface of the round tube in the first slow cooling friction conveying channel and the second slow cooling friction conveying channel, and slowly push the round tube forward in the first slow cooling friction conveying channel and the second slow cooling friction conveying channel, so that the round tube is slowly cooled during the forward movement.

[0080] Reference Figure 26As shown, the slow cooling frame 81 is also equipped with an upper unloading device 87, and the upper unloading device 87 is installed below the first slow cooling friction conveying channel and the second slow cooling friction conveying channel; the upper unloading device 87 includes a cylinder mounting seat 871, and the cylinder mounting seat 871 is fixed on the slow cooling frame 81, and the first unloading cylinder mounting inclined plate 872 is installed on the cylinder mounting seat 871, and the first unloading cylinder 873 is installed obliquely upward on the first unloading cylinder mounting inclined plate 872 and is located below the first slow cooling friction conveying channel, the first round tube head 874 is installed on the telescopic shaft of the first unloading cylinder 873, the second unloading cylinder 875 is installed vertically upward on the cylinder mounting seat 871 and is located below the second slow cooling friction conveying channel, the second round tube head 876 is installed on the telescopic shaft of the second unloading cylinder 875, and the top surface of the second round tube head 876 is set as an inclined surface. During actual operation, because the first unloading cylinder 873 is tilted upward, the first unloading cylinder 873 can lift the round tube in the first slow cooling friction conveying channel and tilt it toward the side of the round tube stacking rack when pushing up, and then introduce it to the round tube stacking rack 10 for placement and storage through the unloading guide 88 installed on the end edge of the slow cooling rack 81; similarly, the second unloading cylinder 875 lifts the round tube in the first slow cooling friction conveying channel through the second round tube head 876 and tilts it toward the side of the round tube stacking rack, and then introduces it to the round tube stacking rack 10 for placement and storage through the unloading guide 88.

[0081] Reference Figure 27 As shown, the unloading buffer mechanism 9 is arranged behind the slow cooling unloading mechanism 8 along the direction of tube conveyance. The unloading buffer mechanism 9 includes a buffer frame 91, on which are mounted a plurality of support rollers 92 spaced side by side along the direction of tube conveyance. A top unloading device 87 is also mounted below the support rollers 92 on the buffer frame 91, and a guide plate 93 is mounted on the end edge of the buffer frame 91, which is biased toward the tube stacking and swinging rack. During operation, under the propulsion of the slow cooling unloading mechanism 8, the front end of the tube moves onto the support rollers 92. The top unloading device 87 in the unloading buffer mechanism 9 then cooperates with the top unloading device 87 in the slow cooling unloading mechanism 8 to lift the tube. The tube is then guided by the unloading guide plate 88 and the guide plate 93 to the tube stacking and swinging rack 10 for storage. The tube stacking and swinging rack 10 is mounted on one side of the unloading buffer mechanism 9 and is used to store the finished tubes after quenching.

[0082] In order to better understand the present invention, the working steps of the present invention are explained as follows:

[0083] (1) The round tube discharging mechanism 1 discharges the materials one by one: the round tubes to be quenched are placed on the steel tube placing bracket 12 and blocked by the rear baffle 16. When loading is required, the moving crossbar push-pull cylinder 17 drives the front moving crossbar 15 to drive the front baffle 16 to move downward. When the front baffle 16 is lower than the position of the blanking guide 13, the round tube falls into the subsequent round tube blanking conveying mechanism 2 along the blanking guide 13 under the action of gravity. When the moving crossbar push-pull cylinder 17 drives the front moving crossbar 15 to move downward, the front baffle 16 is lowered to the position of the blanking guide 13. When the rod 15 drives the front baffle 16 to the lowest position, the position of the front baffle 16 is lower than that of the rear baffle 19. At this time, a round tube located on the rear baffle 19 is just above the front baffle 16. Then the moving cross bar push-pull cylinder 17 drives the front moving cross bar 15 to drive the front baffle 16 to move upward and reset. The round tube can be lifted up by the front baffle 16 and placed on the blanking guide 13. According to this cycle, the round tubes can be automatically discharged one by one.

[0084] (2) Material distribution and conveying of the round tube blanking conveying mechanism 2: When the round tube in the round tube discharging mechanism 1 is discharged through the blanking guide plate 13, the second cylinder 2242 drives the second support plate 2243 to drive the side plate 225 to move downward, and the side plate 225 drives the flip plate 227 to rotate around the central rotation axis 228 through the pull rod 226, so that the front end of the flip plate 227 is tilted. At this time, the round tube discharging mechanism 1 discharges the material, and the round tube is guided by the wedge-shaped guide frame 222 and falls into the first blanking limit channel formed by the V-shaped groove set on the top of the first round tube support block 2234 in the first blanking assembly 223; the first After the two round tubes fall into the first blanking limiting channel, the second cylinder 2242 drives the second support plate 2243 to reset the side plate 225. The side plate 225 drives the flip plate 227 to rotate around the central rotation axis 228 through the pull rod 226, so that the flip plate 227 is reset. At this time, the round tube discharging mechanism 1 discharges the material again. The round tube is guided by the flip plate 227 and falls into the second blanking limiting channel formed by the V-shaped groove on the top of the second round tube support block 2244 in the second blanking assembly 224, thereby completing the automatic blanking and separation of the two round tubes and accurately falling into different limiting channels. When the two round tubes fall into the first blanking limiting channel and the second blanking limiting channel respectively, that is, they just fall onto the two parallel and spaced-apart annular conveyor belts 242. The two continuously rotating annular conveyor belts 242 can drive the round tubes that fall onto the annular conveyor belts 242 to move forward and transport them to the round tube conveying mechanism 3.

[0085] (3) Forward conveying of the round tube conveying mechanism 3: After the round tube enters the annular conveyor belt provided on the second conveyor belt device 33, the two annular conveyor belts provided on the second conveyor belt device 33 can respectively drive the two round tubes to continuously move forward.

[0086] (4) After the two round tubes enter the double-tube power propulsion mechanism 4, they are clamped by the upper conveying roller group 411 and the lower conveying roller group 412 in the double-tube power propulsion mechanism 4, and the propulsion motor 43 drives the gear box 42 to rotate. The gear box 42 drives the conveying rollers in the upper conveying roller group 411 and the lower conveying roller group 412 to rotate through the transmission coupling 44, thereby pushing the two round tubes clamped between the upper conveying roller group 411 and the lower conveying roller group 412 to move forward stably, and then the double-tube pressing transition mechanism 5 and the double-tube friction conveying mechanism 6 push the double round tubes forward stably and at a uniform speed;

[0087] (5) After the double round tubes enter the quenching and tempering device 7, the round tube in the first friction conveying channel passes through the first quenching mechanism 6 and is quenched by the first quenching mechanism 6. The round tube in the second friction conveying channel passes through the second quenching mechanism 7 and is quenched by the second quenching mechanism 7. After the quenching is completed, the round tube passes through the tempering mechanism 8. The tempering mechanism 8 can simultaneously perform tempering and cooling treatment on the first friction conveying channel and the second friction conveying channel. The tempering cooling water conveying mechanism 9 continuously conveys cooling water to the spray pipe 85 in the tempering mechanism 8. The cooling water is collected by the water collecting tank 4 and then returned to the tempering cooling water conveying mechanism 9, so that the recycling of cooling water can be realized.

[0088] (6) The tempered double round tubes are conveyed to the first slow cooling friction conveying channel and the second slow cooling friction conveying channel of the slow cooling unloading mechanism 8 through the friction conveying mechanism 6, and enter the polishing channel composed of the lower polishing roller 8611 and the upper polishing roller 868 in the first slow cooling friction conveying channel and the second slow cooling friction conveying channel respectively. The upper polishing roller driving motor 867 is used to drive the upper polishing roller 868 to rotate, and the polishing of the round tube surface in the first slow cooling friction conveying channel and the second slow cooling friction conveying channel is achieved through the cooperation between the upper polishing roller 868 and the lower polishing roller 8611, and the round tube is slowly pushed forward in the first slow cooling friction conveying channel and the second slow cooling friction conveying channel, and the round tube is slowly cooled during the forward movement.

[0089] (7) After the round tubes enter the unloading buffer mechanism 9, the round tubes in the first slow cooling friction conveying channel and the second slow cooling friction conveying channel are pushed up and unloaded onto the round tube stacking rack 10 for storage through the top unloading device 87 installed in the slow cooling unloading mechanism 8 and the unloading buffer mechanism 9, thereby realizing the polishing treatment of the double round tube surfaces after tempering, as well as stable cooling and automatic unloading.

[0090] This dual-channel high-strength round tube induction quenching equipment has a reasonable design, simple structure, high degree of automation and high production efficiency. It can realize automatic loading, material separation, stable forward advancement, quenching, tempering, slow cooling, surface grinding and unloading of double round tubes. During actual work, it is only necessary to place the round tube that needs to be loaded on the round tube discharging mechanism 1, discharge it through the round tube discharging mechanism 1, and then drop the two round tubes into two branch blanking assemblies with the same structure through the round tube branch blanking conveying mechanism 2, and then convey the two round tubes to the round tube conveying mechanism 3 installed behind the round tube branch blanking conveying mechanism through the first conveyor belt device in the round tube branch blanking conveying mechanism 2. The two round tubes are conveyed forward at the same time by the round tube conveying mechanism 3, and the cooperation between the double-round tube power propulsion mechanism 4, the double-round tube pressing transition mechanism 5 and the double-round tube friction conveying mechanism 6 is used to realize the steady advancement of the double round tubes at the same time, and the high-frequency quenching and tempering cooling of the double round tubes are realized by the quenching and tempering device 7; the surface of the double round tube after tempering is polished by the slow cooling unloading mechanism 8, and the stable advancement, cooling and unloading of the two round tubes are realized at the same time, with a high degree of automation and high efficiency of round tube quenching and tempering.

[0091] The above description is only a preferred embodiment of the present invention, but the present invention should not be limited to the contents disclosed in the embodiment and the drawings. Therefore, any equivalent or modification completed without departing from the spirit disclosed in the present invention shall fall within the scope of protection of the present invention.

Claims

1. A dual-channel high-strength round tube induction quenching equipment, characterized in that include: The round tube unloading mechanism comprises a unloading rack, on which a plurality of steel tube placing brackets arranged side by side in a horizontal direction are installed, and the steel tube placing brackets are tilted forward, and a plurality of blanking guide plates arranged side by side in a horizontal direction are installed in front of the steel tube placing brackets, and each blanking guide plate is provided with a strip hole in the vertical direction, and the front moving cross bar passes through the strip hole of each blanking guide plate in the horizontal direction, and the moving cross bar push-pull cylinder is installed below the front moving cross bar in the vertical direction and is connected to the front moving cross bar, and a plurality of front baffle plates arranged side by side in a horizontal direction are installed on the front moving cross bar, and the unloading mechanism The rack is provided with a rear stop plate mounting cross bar at the oblique rear of the blanking guide plate, and a plurality of rear stop plates are mounted on the rear stop plate mounting cross bar, which are spaced apart in parallel. The function of the rear stop plate is to block the round tube of the steel pipe placing bracket from rolling downward. When the moving cross bar push-pull cylinder drives the front moving cross bar to drive the front stop plate to the lowest position, so that the position of the front stop plate is lower than the position of the rear stop plate. At this time, a round tube located on the rear stop plate is just above the front stop plate. Then, when the moving cross bar push-pull cylinder drives the front moving cross bar to move upward and reset, the round tube can be lifted up by the front stop plate and placed on the blanking guide plate. A circular tube channel blanking and conveying mechanism is installed on the side of the circular tube discharge mechanism, and the circular tube channel blanking and conveying mechanism includes a blanking frame, and two channel blanking assemblies with the same structure are installed in parallel and at intervals on the blanking frame, a first synchronous adjustment assembly is installed between the two channel blanking assemblies, and a first conveyor belt device is installed above the first synchronous adjustment assembly and is located between the two channel blanking assemblies, and the channel blanking assembly includes a support plate, and the support plate is installed on the blanking frame, and the wedge guide frame is installed on the support plate, and the first blanking assembly and the second blanking assembly are installed in parallel and at intervals on the blanking frame and are located behind the support plate, the first blanking assembly includes a first circular tube support block, and a V-shaped groove for limiting the position of the circular tube is provided on the top of the first circular tube support block, and the second blanking assembly includes a second circular tube support block, and a V-shaped groove for limiting the position of the circular tube is also provided on the top of the second circular tube support block, and the side plate is fixed on the second support plate arranged in the second blanking assembly, and the second support plate is installed on the telescopic part of the vertically arranged second cylinder On the shaft, the second cylinder drives the second support plate to drive the side plates to move up and down, and a central rotating shaft is installed above the first blanking assembly and the second blanking assembly, and the two symmetrically arranged flip plates are respectively fixed on the left and right sides of the central rotating shaft, and the two flip plates are connected by multiple connecting rods, and the ends of the flip plates are hinged to the top of the pull rod, and the bottom of the pull rod is hinged to the side plates. When the second cylinder drives the second support plate to move the side plates downward, the side plates drive the flip plates to rotate around the central rotating shaft through the pull rod, so that the front end of the flip plate is tilted; when the second cylinder drives the second support plate to drive the side plates to reset, the side plates drive the flip plates to rotate around the central rotating shaft through the pull rod, so that the flip plates are reset; the round tube is guided by the wedge guide frame and falls into the first blanking limiting channel formed by the V-shaped groove on the top of the first round tube support block in the first blanking assembly, and the round tube is guided by the flip plate and falls into the second blanking limiting channel formed by the V-groove on the top of the second round tube support block in the second blanking assembly; A round tube conveying mechanism installed behind the round tube channel blanking conveying mechanism along the round tube conveying direction; A double-tube power propulsion mechanism installed behind the tube conveying mechanism along the tube conveying direction; A double-tube pressing transition mechanism installed behind the double-tube power propulsion mechanism along the direction of the tube conveying; A double-tube friction conveying mechanism installed behind the double-tube pressing transition mechanism along the conveying direction of the round tube; A quenching and tempering device installed behind the double-tube friction conveying mechanism along the conveying direction of the tubes; A double-tube friction conveying mechanism installed behind the quenching and tempering device along the direction of tube conveying; A slow cooling unloading mechanism is installed behind the double-tube friction conveying mechanism along the direction of the tube conveying; A discharge buffer mechanism installed behind the slow cooling discharge mechanism along the pipe conveying direction; as well as A round tube stacking swing rack installed on one side of the unloading buffer mechanism.

2. The dual-channel high-strength round tube induction hardening equipment according to claim 1, characterized in that: The first blanking assembly includes a first bracket, the first bracket is fixed on the blanking machine frame, the first cylinder is fixed on the first bracket along the vertical direction, the first support plate is fixed on the telescopic axis of the first cylinder, and a plurality of first circular tube support blocks distributed in parallel and at intervals are installed on the first support plate, each first circular tube support block has a V-shaped groove for limiting the circular tube on the top, and a first inclined partition is installed behind the first circular tube support block; the second blanking assembly includes a second bracket, the second bracket is fixed on the blanking machine frame and is located behind the first bracket, the second cylinder is fixed on the second bracket along the vertical direction, the second support plate is fixed on the telescopic axis of the second cylinder, and a plurality of second circular tube support blocks distributed in parallel and at intervals are installed on the second support plate, each second circular tube support block has a V-shaped groove for limiting the circular tube on the top, a vertically arranged second partition is installed in front of the second circular tube support block, a rear baffle is installed behind the second circular tube support block, and the side plates are fixed on the sides of the second support plate.

3. The dual-channel high-strength round tube induction hardening equipment according to claim 1, characterized in that: The first synchronous adjustment component includes a first gearbox fixed on the blanking machine frame, two second gearboxes are symmetrically installed on the front and rear sides of the first gearbox, and synchronous lifting worm gears are symmetrically installed on the left and right sides of each second gearbox. The synchronous drive motor is installed on the input shaft of the first gearbox, and the output shaft of the first gearbox is connected to the input shaft of the second gearbox through a driving rod, and the output shaft of the second gearbox is connected to the synchronous lifting worm gear through a synchronous connecting rod. The top of each synchronous lifting worm gear is installed with a connecting flange; the first conveyor belt device includes an outer shell, and a plurality of support ears are installed on the bottom of the outer shell. The outer shell is docked with the connecting flange at the top of the synchronous lifting worm gear in the first synchronous adjustment assembly through the support ears. Two parallel and spaced annular conveyor belts are installed on the outer shell, and limit baffles are installed on the left and right sides of each annular conveyor belt.

4. The dual-channel high-strength round tube induction hardening equipment according to claim 1, characterized in that: The round tube conveying mechanism includes a conveying frame, a second synchronous adjustment component is installed on the conveying frame, and a second conveyor belt device is installed on the second synchronous adjustment component.

5. The dual-channel high-strength round tube induction hardening equipment according to claim 1, characterized in that: The upper and lower conveying rollers are respectively provided with two rows of conveying rollers distributed in parallel and at intervals front and back, and the upper and lower conveying rollers are respectively connected to the output shaft of the gear box through a transmission coupling, and the upper conveying roller group adjusting cylinder is vertically downwardly mounted on the top of the front mounting frame, and the telescopic shaft of the upper conveying roller group adjusting cylinder is connected to the mounting frame of the upper conveying roller group.

6. The dual-channel high-strength round tube induction hardening equipment according to claim 1, characterized in that: The double-tube pressing transition mechanism includes a transition frame, a transition conveying roller mounting frame is installed on the transition frame, two rows of transition conveying rollers spaced apart and distributed in parallel front and back are installed on the transition conveying roller mounting frame, a first crossbeam is installed above the transition frame, a first pressing cylinder arranged vertically downward is installed on the first crossbeam, a pressing bar mounting plate is installed on the telescopic shaft of the first pressing cylinder, and two pressing bars facing the two rows of transition conveying rollers below are installed on the pressing bar mounting plate.

7. The dual-channel high-strength round tube induction hardening equipment according to claim 1, characterized in that: The double-tube friction conveying mechanism includes a conveying frame, on which multiple groups of bearing mounting seats are installed, and four parallel and spaced transmission rods are respectively installed on the bearing mounting seats through bearings, and each transmission rod is installed with a friction wheel, wherein the friction wheels on the first transmission rod and the second transmission rod are fitted together to form a first friction conveying channel for the round tube, and the friction wheels on the third transmission rod and the fourth transmission rod are fitted together to form a second friction conveying channel for the round tube, the second crossbeam is installed above the conveying frame, the pressing cylinder is installed vertically downward on the second crossbeam, and the pressing roller assembly is installed on the telescopic shaft of the pressing cylinder and is located above the first friction conveying channel and the second friction conveying channel.

8. The dual-channel high-strength round tube induction hardening equipment according to claim 1, characterized in that: The quenching and tempering device includes a frame; a friction transmission power mechanism installed on the frame, the friction transmission power mechanism includes a power output reduction box installed on the frame, a power output motor is installed on the input shaft of the power output reduction box, the output shaft of the power output reduction box is connected to the power output transmission rod, the power output transmission rod is fixed to the frame through a plurality of power output transmission rod bearing mounting seats arranged in parallel and at intervals, a gear shaft is installed at the end of the power output transmission rod, an active output gear is installed on the gear shaft, four synchronous transmission rods are installed on the frame in parallel and at intervals through synchronous transmission rod bearing seats and are located above the power output transmission rod, each synchronous transmission rod is installed with a friction wheel, wherein the friction wheels on the first synchronous transmission rod and the second synchronous transmission rod are fitted to form a first friction transmission channel for the circular tube, and the friction wheels on the third synchronous transmission rod and the fourth synchronous transmission rod are fitted to form a second friction transmission channel for the circular tube, and synchronous transmission gears are installed on all four synchronous transmission rods. The synchronous transmission gears are connected to the active output gears on the gear shaft through synchronous belts respectively; four pressing roller assemblies are installed in parallel and at intervals above the friction conveying mechanism along the conveying direction of the round tube, wherein the first pressing roller assembly and the third pressing roller assembly are located above the first friction conveying channel, and the second pressing roller assembly and the fourth pressing roller assembly are located above the first friction conveying channel; a first quenching mechanism, a second quenching mechanism and a tempering mechanism are installed in parallel and at intervals behind the friction conveying mechanism along the conveying direction of the round tube, wherein the first quenching mechanism is arranged relative to the first friction conveying channel, the second quenching mechanism is arranged relative to the second friction conveying channel, and the tempering mechanism is arranged relative to the first friction conveying channel and the second friction conveying channel at the same time; a tempering cooling water conveying mechanism is installed on one side of the tempering mechanism, and the tempering cooling water conveying mechanism is connected to the spray pipe in the tempering mechanism; a water collecting tank is installed on the frame and located below the friction conveying mechanism, and the water collecting tank is connected to the tempering cooling water conveying mechanism through a pipeline.

9. The dual-channel high-strength round tube induction hardening equipment according to claim 8, characterized in that: The first quenching mechanism and the second quenching mechanism have the same structure, both of which include a quenching machine XY moving guide rail, a quenching machine displacement drive motor is installed on one side of the quenching machine XY moving guide rail, the quenching machine body is installed on the quenching machine XY moving guide rail, and a quenching ring is installed at the front end of the quenching machine body, wherein the quenching ring at the front end of the first quenching mechanism is arranged opposite to the first friction conveying channel, and the quenching ring at the front end of the second quenching mechanism is arranged opposite to the second friction conveying channel; the tempering mechanism includes a tempering machine XY moving guide rail, and a quenching machine displacement drive motor is installed on one side of the tempering machine XY moving guide rail. The tempering machine displacement drive motor, the tempering machine body is installed on the tempering machine XY moving guide rail, and two tempering rings are installed at the front end of the tempering machine body, which are respectively arranged opposite to the first friction conveying channel and the second friction conveying channel. A spray pipe is installed on one side of each tempering ring; the tempering cooling water delivery mechanism includes a cooling water tank, and a water pump is provided on one side of the cooling water tank. The water pump is connected to the spray pipe in the tempering mechanism through a water supply pipe, and the water collecting tank is connected to the cooling water tank through a return pipe. The cooling water tank is also connected to an external water source through an external water pipe.

10. The dual-channel high-strength round tube induction hardening equipment according to claim 1, characterized in that: The slow cooling unloading mechanism includes a slow cooling frame, on which are installed multiple groups of slow cooling transmission rod bearing seats arranged in parallel and at intervals along the conveying direction of the round tube, four slow cooling transmission rods are installed in parallel and at intervals on the slow cooling frame through the slow cooling transmission rod bearing seats, and each slow cooling transmission rod is equipped with a slow cooling friction wheel, wherein the slow cooling friction wheels on the first slow cooling transmission rod and the second slow cooling transmission rod are fitted to form the first slow cooling friction conveying channel for the round tube, and the slow cooling friction wheels on the third slow cooling transmission rod and the fourth slow cooling transmission rod are fitted to form The second slow cooling friction conveying channel for the round tube is provided, and a polishing slow cooling device is installed on the slow cooling frame. The polishing slow cooling device includes four support guide rods distributed along a square and installed on the slow cooling frame. A top plate is installed on the top of the support guide rod, and a movable mounting plate is connected to the support guide rod through a guide sleeve. Two groups of upper polishing rollers are installed on the bottom of the movable mounting plate. The two groups of upper polishing rollers are respectively located above the first slow cooling friction conveying channel and the second slow cooling friction conveying channel. The two groups of upper polishing rollers are connected by an upper polishing roller transmission rod. The upper polishing roller transmission rod is connected to the upper polishing roller driving motor, the lower polishing roller mounting seat is installed on the slow cooling frame, and the two sets of lower polishing rollers are installed on the lower polishing roller mounting seat and are respectively located below the first slow cooling friction conveying channel and the second slow cooling friction conveying channel. The slow cooling frame is also equipped with an upper unloading device, which is installed below the first slow cooling friction conveying channel and the second slow cooling friction conveying channel; the upper unloading device includes a cylinder mounting seat, and the cylinder mounting seat Fixed on the slow cooling rack or the cache rack, the first unloading cylinder mounting inclined plate is installed on the cylinder mounting seat, the first unloading cylinder is installed obliquely upward on the first unloading cylinder mounting inclined plate and is located below the first slow cooling friction conveying channel, the first round tube head is installed on the telescopic shaft of the first unloading cylinder, the second unloading cylinder is installed vertically upward on the cylinder mounting seat and is located below the second slow cooling friction conveying channel, the second round tube head is installed on the telescopic shaft of the second unloading cylinder, and the top surface of the second round tube head is set to be an inclined surface.

11. The dual-channel high-strength round tube induction hardening equipment according to claim 1, characterized in that: The unloading cache mechanism includes a cache rack, on which a plurality of support rollers are installed along the conveying direction of the round tubes, and a top unloading device is installed below the support rollers on the cache rack, and a guide plate is installed on the end edge of the cache rack, which is biased towards the round tube stacking rack.

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