A seamless steel pipe straightening and quenching device

Abstract

The present invention discloses a seamless steel pipe straightening and quenching device, including a base. A gantry is fixedly installed at the upper end of the base. A collection box for recovering quenching liquid is fixedly installed at the upper end of the gantry. A filter screen is arranged on the upper end surface of the collection box. A feeding table for pushing the seamless steel pipe after quenching is fixedly installed on the side wall of the collection box; An elevating mechanism for discharging the seamless steel pipe is arranged at the upper end of the collection box; Two first straightening rollers are symmetrically arranged inside the gantry. Two chutes are respectively opened on the front and back sides of the gantry. A sliding plate is slidably connected inside the chute. Both ends of each first straightening roller are rotatably connected to the two sliding plates respectively. Through the design of the elevating mechanism, the present invention lowers the discharged steel pipe and then rolls it out along the slope of the elevating plate and the filter screen to complete the discharging, and can recover the quenching liquid sprayed during quenching, so as to facilitate the recovery, filtration and reuse of the quenching liquid and reduce waste.

Description

Technical Field

[0001] The present invention relates to the technical field of seamless steel pipe quenching, and particularly to a straightening and quenching device for seamless steel pipes. Background Art

[0002] The existing patent application number is: CN201010509532.X, a straightening and quenching device for seamless steel pipes, including an induction heating device, a feeding device, a steel pipe transfer device, a steel pipe straightening device, and a steel pipe quenching device.

[0003] The steel pipe passes between the straightening upper roll and the straightening lower roll, and the workpiece is straightened by the repeated rotation of the straightening upper roll and the straightening lower roll. While straightening, the coolant nozzle sprays a water curtain to quench the steel pipe. The whole process from feeding the steel pipe to heating, straightening, and quenching takes a short time, greatly saving time and energy; it not only improves the material utilization rate and processing efficiency, but also greatly improves the performance and strength of the material, and overall improves the mechanical performance and service life of the oil cylinder.

[0004] The present invention has the advantages of low production cost, high processing efficiency, and excellent product quality; although it can realize the one-time forming of straightening and quenching of the steel pipe, after the steel pipe is straightened and quenched, it needs to be manually discharged, which is time-consuming and laborious. The workload of the staff continuously discharging the steel pipe is large. At the same time, after the quenching liquid is quenched, there is no measure to recycle it, resulting in waste of the quenching liquid. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies in the prior art, and a straightening and quenching device for seamless steel pipes is proposed. Through the design of the lifting mechanism, the discharged steel pipe is lowered and then rolls out along the slope of the lifting plate and the filter screen to complete the discharging, and the quenching liquid sprayed during quenching can be recycled to facilitate the recycling, filtration, and reuse of the quenching liquid, reducing waste.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A straightening and quenching device for seamless steel pipes, including a base, a gantry is fixedly installed at the upper end of the base, a collection box for recycling quenching liquid is fixedly installed at the upper end of the gantry, a filter screen is arranged on the upper end surface of the collection box, and a feeding table for pushing the seamless steel pipe after quenching is fixedly installed on the side wall of the collection box;

[0008] A lifting mechanism for discharging seamless steel pipes is arranged at the upper end of the collection box;

[0009] Inside the gantry, two first straightening rollers are symmetrically arranged. On both the front and rear sides of the gantry, two chutes are provided. Inside the chutes, sliding plates are slidably connected. The two ends of each first straightening roller are respectively rotatably connected to the two sliding plates. Inside the two chutes on the same side, pushing cylinders are fixedly installed. The two pushing cylinders are symmetrically arranged, and the telescopic ends of the pushing cylinders are fixedly connected to the sliding plates;

[0010] Outside the gantry, a driving mechanism is provided for driving the two first straightening rollers to rotate;

[0011] At the upper end of the gantry, a lifting cylinder is fixedly installed. The telescopic end of the lifting cylinder is fixedly installed with a mounting frame. Inside the mounting frame, a second straightening roller for straightening seamless steel pipes is rotatably connected;

[0012] Inside the gantry, a quenching assembly for quenching seamless steel pipes is provided.

[0013] Preferably, a transfer frame is fixedly installed inside the gantry. The transfer frame is inclined, and its bottom end is higher than the highest point of the first straightening rollers.

[0014] Preferably, an inclined surface is provided at the upper end of the collection box, and the filter screen is inclined.

[0015] Preferably, the lifting mechanism includes a second motor fixedly installed at the lower end of the base. The output shaft of the second motor is fixedly installed with a screw rod. The upper end of the screw rod penetrates through the collection box and is threadedly connected to a lifting plate. The end of the lifting plate away from the screw rod is slidably connected to a limiting plate. A rectangular opening for discharging seamless steel pipes is provided on the limiting plate.

[0016] Preferably, the screw rod is composed of an upper threaded part, a lower non-threaded part, and a top stop block.

[0017] Preferably, the lifting plate is composed of two horizontal plates at both ends and a middle inclined plate. A strip-shaped opening is provided on the right horizontal plate for the limiting plate to slide.

[0018] Preferably, the driving mechanism includes a first motor fixedly installed on the side wall of the gantry. Two fixing plates are fixedly installed on the side wall of the gantry. A rotatable transmission cylinder is arranged between the two fixing plates. The transmission cylinder is connected to the first motor through a transmission component. Both ends of the transmission cylinder are slidably connected to transmission rods;

[0019] Two mounting plates are fixedly installed on the side wall of the sliding plate. A worm is rotatably connected between the two mounting plates. A worm gear coaxially fixed with the first straightening roller is rotatably connected to the side wall of the sliding plate. The worm gear meshes with the worm, and the transmission rod is coaxially fixed with the worm.

[0020] Preferably, the outer side of the transmission rod and the inner cavity of the transmission cylinder are both square structures. A rotating shaft fixed to the worm is fixedly installed at one end of the transmission rod away from the transmission cylinder, and the rotating shaft penetrates through the mounting plate and is rotatably connected thereto.

[0021] Preferably, the quenching assembly includes a quenching liquid storage tank fixedly installed at the upper end of the gantry. A liquid extraction pump is fixedly installed on the side wall of the quenching liquid storage tank. A horizontal pipe is fixedly installed inside the gantry. A plurality of nozzles are equidistantly arranged on the side wall of the horizontal pipe. The liquid extraction pump is connected to the horizontal pipe through a liquid delivery pipe.

[0022] Preferably, a first baffle and a second baffle are fixedly installed inside the gantry. The lower end of the first baffle is fixedly connected to the collection box and is located at the top of the filter screen.

[0023] The present invention has the following beneficial effects:

[0024] Through the design of the lifting mechanism, the lifting plate descends linearly along the limiting plate. As the lifting plate descends, the rectangular opening is gradually opened. When the lifting plate is at the lowest position, the steel pipe can roll out through the rectangular opening, facilitating the discharging of the steel pipe.

[0025] Through the design of the first straightening roller, the pushing cylinder, the sliding plate, the sliding groove, and the driving mechanism, the distance between the two first straightening rollers can be adjusted, thus facilitating the discharging of the steel pipe and the straightening of the steel pipe.

[0026] Through the design of the collection box, the filter screen, the first baffle, and the second baffle, the quenching liquid sprayed during quenching can be recovered, so as to facilitate the recycling and filtration of the quenching liquid for reuse, reducing waste.

[0027] Through the design of the quenching assembly, the liquid extraction pump injects the quenching liquid in the quenching liquid storage tank into the horizontal pipe through the liquid delivery pipe, and finally sprays the quenching liquid from the nozzles to quench the steel pipe, realizing the one-time forming of the straightening and quenching of the steel pipe. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of a seamless steel pipe straightening and quenching device proposed by the present invention;

[0029] Figure 2 It is a sectional view of a seamless steel pipe straightening and quenching device proposed by the present invention;

[0030] Figure 3 It is a schematic diagram of the lifting plate of a seamless steel pipe straightening and quenching device proposed by the present invention;

[0031] Figure 4 It is a schematic diagram of the transmission cylinder of a seamless steel pipe straightening and quenching device proposed by the present invention.

[0032] In the figure: 1 base, 2 gantry, 3 feeding table, 4 first motor, 5 fixed plate, 6 slide plate, 7 chute, 8 worm, 9 transmission rod, 10 transmission cylinder, 11 mounting plate, 12 worm gear, 13 lifting cylinder, 14 second motor, 15 collection box, 16 filter screen, 17 limiting plate, 18 screw rod, 19 lifting plate, 20 first baffle, 21 second baffle, 22 first straightening roller, 23 transfer rack, 24 nozzle, 25 horizontal pipe, 26 infusion pipe, 27 second straightening roller, 28 mounting rack, 29 liquid extraction pump, 30 quenching liquid storage tank. Detailed implementation manner

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0035] Refer to Figures 1-4 , a seamless steel pipe straightening and quenching device, including a base 1, a gantry 2 is fixedly installed at the upper end of the base 1, a collection box 15 for recovering quenching liquid is fixedly installed at the upper end of the gantry 2, a filter screen 16 is arranged on the upper end surface of the collection box 15, an inclined surface is arranged at the upper end of the collection box 15, the filter screen 16 is inclined, a feeding table 3 for pushing the seamless steel pipe after quenching is fixedly installed on the side wall of the collection box 15, a first baffle 20 and a second baffle 21 are fixedly installed inside the gantry 2, the lower end of the first baffle 20 is fixedly connected to the collection box 15 and is located at the top of the filter screen 16;

[0036] An elevating mechanism for discharging seamless steel pipes is arranged at the upper end of the collection box 15. The elevating mechanism includes a second motor 14 fixedly installed at the lower end of the base 1. The output shaft of the second motor 14 is fixedly installed with a screw rod 18. The screw rod 18 is composed of an upper threaded part, a lower non-threaded part and a top stop block. The upper end of the screw rod 18 penetrates through the collection box 15 and is threadedly connected with a lifting plate 19. The lifting plate 19 is composed of two horizontal plates at both ends and an inclined plate in the middle. A strip-shaped opening is opened on the horizontal plate at the right end for the limiting plate 17 to slide. One end of the lifting plate 19 away from the screw rod 18 is slidably connected with a limiting plate 17. A rectangular opening for discharging seamless steel pipes is opened on the limiting plate 17;

[0037] Inside the gantry 2, two first straightening rollers 22 are symmetrically arranged. A transfer rack 23 is fixedly installed on the inner side of the gantry 2. The transfer rack 23 is inclined, and the bottom end is higher than the highest point of the first straightening rollers 22. Two chutes 7 are provided on both the front and rear sides of the gantry 2. A slide plate 6 is slidably connected inside the chute 7. Both ends of each first straightening roller 22 are rotatably connected to the two slide plates 6. Push cylinders are fixedly installed in both of the two chutes 7 on the same side. The two push cylinders are symmetrically arranged. The telescopic end of the push cylinder is fixedly connected to the slide plate 6;

[0038] On the outside of the gantry 2, a driving mechanism for driving the two first straightening rollers 22 to rotate is provided. The driving mechanism includes a first motor 4 fixedly installed on the side wall of the gantry 2. Two fixing plates 5 are fixedly installed on the side wall of the gantry 2. A rotatable transmission cylinder 10 is arranged through between the two fixing plates 5. The transmission cylinder 10 is connected to the first motor 4 through a transmission component. Both ends of the transmission cylinder 10 are slidably connected with transmission rods 9. The outer side of the transmission rod 9 and the inner cavity of the transmission cylinder 10 are both of square structures. The end of the transmission rod 9 away from the transmission cylinder 10 is fixedly installed with a rotating shaft fixed to the worm 8. The rotating shaft penetrates through the mounting plate 11 and is rotatably connected thereto;

[0039] Two mounting plates 11 are fixedly installed on the side wall of the slide plate 6. A worm 8 is rotatably connected between the two mounting plates 11. A worm gear 12 coaxially fixed to the first straightening roller 22 is rotatably connected to the side wall of the slide plate 6. The worm gear 12 meshes with the worm 8. The transmission rod 9 is coaxially fixed to the worm 8;

[0040] An elevating cylinder 13 is fixedly installed at the upper end of the gantry 2. The telescopic end of the elevating cylinder 13 is fixedly installed with a mounting frame 28. A second straightening roller 27 for straightening seamless steel pipes is rotatably connected to the inner side of the mounting frame 28;

[0041] A quenching component for quenching seamless steel pipes is arranged inside the gantry 2. The quenching component includes a quenching liquid storage tank 30 fixedly installed at the upper end of the gantry 2. A liquid extraction pump 29 is fixedly installed on the side wall of the quenching liquid storage tank 30. A cross pipe 25 is fixedly installed on the inner side of the gantry 2. A plurality of nozzles 24 are equidistantly arranged on the side wall of the cross pipe 25. The liquid extraction pump 29 is connected to the cross pipe 25 through a liquid delivery pipe 26.

[0042] Working principle:

[0043] During work, when all the steel pipes are taken out of the induction heating furnace, the steel pipes are pushed onto the transfer rack 23, and then the steel pipes roll down along the slope of the transfer rack 23 and enter between the two first straightening rollers 22;

[0044] At this time, the first motor 4 is started. The first motor 4 drives the transmission cylinder 10 to rotate through the transmission assembly. The rotation of the transmission cylinder 10 drives the transmission rod 9 to rotate. The rotation of the transmission rod 9 drives the worm 8 to rotate. Since the worm 8 meshes with the worm wheel 12, the rotation of the two first straightening rollers 22 is realized. Subsequently, the telescopic end of the lifting cylinder 13 pushes the second straightening roller 27 downward, and the three rollers press the steel pipe together for rotary straightening;

[0045] Subsequently, the liquid extraction pump 29 is started, and the quenching liquid in the quenching liquid storage tank 30 is injected into the horizontal pipe 25 through the liquid delivery pipe 26 and finally sprayed out from the nozzle 24 to quench the steel pipe, realizing the one-time forming of straightening and quenching of the steel pipe;

[0046] The pushing cylinder is started to pull the two sliding plates 6 to both sides respectively, so that the two first straightening rollers 22 are separated, and thus the steel pipe will fall between the two first straightening rollers 22 and land on the lifting plate 19. The limiting plate 17 limits it. At this time, the second motor 14 is turned on. The rotation of the second motor 14 drives the screw 18 to rotate, so that the lifting plate 19 descends linearly along the limiting plate 17. As the lifting plate 19 descends, the rectangular opening is gradually opened. When the lifting plate 19 is at the lowest position, the steel pipe can roll out through the rectangular opening and finally land on the feeding table 3 for subsequent processing.

[0047] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A seamless steel pipe straightening and quenching device, comprising a base (1), characterized in that: A gantry (2) is fixedly mounted on the upper end of the base (1), a collecting box (15) for recovering quenching liquid is fixedly mounted on the upper end of the gantry (2), a filter screen (16) is provided on the upper end surface of the collecting box (15), and a feeding platform (3) for pushing quenched seamless steel pipes is fixedly mounted on the side wall of the collecting box (15); The upper end of the collecting box (15) is provided with a lifting mechanism for discharging seamless steel pipes; Two first straightening rollers (22) are symmetrically arranged inside the gantry (2), two slide grooves (7) are provided on the front and rear sides of the gantry (2), a slide plate (6) is slidably connected inside the slide groove (7), both ends of each first straightening roller (22) are rotatably connected to the two slide plates (6), a pushing cylinder is fixedly installed in the two slide grooves (7) on the same side, the two pushing cylinders are symmetrically arranged, and the telescopic ends of the pushing cylinders are fixedly connected to the slide plate (6); A driving mechanism for driving two first straightening rollers (22) to rotate is arranged on the outer side of the gantry (2); A lifting cylinder (13) is fixedly mounted on the upper end of the gantry (2), a mounting frame (28) is fixedly mounted on the telescopic end of the lifting cylinder (13), and a second straightening roller (27) for straightening seamless steel pipes is rotatably connected to the inner side of the mounting frame (28); A quenching assembly for quenching seamless steel pipes is arranged inside the gantry (2); The lifting mechanism comprises a second motor (14) fixedly mounted on the lower end of the base (1); a screw (18) is fixedly mounted on the output shaft of the second motor (14); the upper end of the screw (18) passes through the collecting box (15) and is threadedly connected to a lifting plate (19); an end of the lifting plate (19) away from the screw (18) is slidably connected to a limit plate (17); and a rectangular opening for discharging seamless steel pipes is provided on the limit plate (17); The quenching assembly comprises a quenching liquid storage box (30) fixedly mounted on the upper end of a gantry (2); a liquid pump (29) is fixedly mounted on the side wall of the quenching liquid storage box (30); a transverse pipe (25) is fixedly mounted on the inner side of the gantry (2); a plurality of nozzles (24) are arranged at equal intervals on the side wall of the transverse pipe (25); and the liquid pump (29) and the transverse pipe (25) are connected via a liquid infusion pipe (26).

2. A seamless steel pipe straightening and quenching device according to claim 1, characterized in that: A transfer frame (23) is fixedly mounted on the inner side of the gantry (2); the transfer frame (23) is arranged obliquely, and the bottom end thereof is higher than the highest point of the first straightening roller (22).

3. The seamless steel pipe straightening and quenching device according to claim 1, characterized in that: The upper end of the collection box (15) is provided with an inclined surface, and the filter screen (16) is arranged at an angle.

4. A seamless steel pipe straightening and quenching device according to claim 1, characterized in that: The screw rod (18) consists of an upper threaded portion, a lower non-threaded portion, and a top stopper.

5. The seamless steel pipe straightening and quenching device according to claim 1, characterized in that: The lifting plate (19) is composed of horizontal plates at both ends and an inclined plate in the middle, and the horizontal plate at the right end is provided with a strip opening for the limiting plate (17) to slide.

6. The seamless steel pipe straightening and quenching device according to claim 1, characterized in that: The driving mechanism comprises a first motor (4) fixedly mounted on a side wall of the gantry (2); two fixing plates (5) are fixedly mounted on the side wall of the gantry (2); a rotatable transmission cylinder (10) is provided between the two fixing plates (5); the transmission cylinder (10) is connected to the first motor (4) via a transmission assembly; and transmission rods (9) are slidably connected to both ends of the transmission cylinder (10); Two mounting plates (11) are fixedly mounted on the side wall of the slide plate (6); a worm (8) is rotatably connected between the two mounting plates (11); a worm wheel (12) coaxially fixed to the first straightening roller (22) is rotatably connected to the side wall of the slide plate (6); the worm wheel (12) is meshed with the worm (8); and the transmission rod (9) is coaxially fixed to the worm (8).

7. A seamless steel pipe straightening and quenching device according to claim 6, characterized in that: The outer side of the transmission rod (9) and the inner cavity of the transmission cylinder (10) are both square structures. A rotating shaft fixed to the worm (8) is fixedly mounted on one end of the transmission rod (9) away from the transmission cylinder (10). The rotating shaft passes through the mounting plate (11) and is rotatably connected thereto.

8. The seamless steel pipe straightening and quenching device according to claim 1, characterized in that: A first baffle (20) and a second baffle (21) are fixedly mounted on the inner side of the gantry (2); the lower end of the first baffle (20) is fixedly connected to the collection box (15) and is located at the top of the filter screen (16).

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