Seamless steel tube straightening and quenching device

Abstract

The seamless steel pipe straightening and quenching device comprises a base, a portal frame is fixedly installed at the upper end of the base, a collecting box used for recycling quenching liquid is fixedly installed at the upper end of the portal frame, and a filter screen is arranged on the upper end face of the collecting box; a feeding table used for pushing the quenched seamless steel pipes is fixedly mounted on the side wall of the collecting box; a lifting mechanism for discharging the seamless steel pipes is arranged at the upper end of the collecting box; two first straightening rollers are symmetrically arranged in the portal frame, two sliding grooves are formed in the front side and the rear side of the portal frame correspondingly, sliding plates are connected into the sliding grooves in a sliding mode, and the two ends of each first straightening roller are rotationally connected with the two sliding plates correspondingly. Through the design of the lifting mechanism, a discharged steel pipe is descended and then rolls out along the gradient of the lifting plate and the filter screen to complete discharging, and quenching liquid sprayed out during quenching can be recycled, so that the quenching liquid can be recycled, filtered and reused, and waste is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of seamless steel pipe quenching, in particular to a seamless steel pipe straightening and quenching device. Background Art

[0002] The existing patent application number is: CN201010509532.X A seamless steel pipe straightening and quenching device, 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 roller and the straightening lower roller, and the workpiece is straightened by the repeated rotation of the straightening upper roller and the straightening lower roller. At the same time, the coolant nozzle sprays water curtain to quench the steel pipe. The whole process from loading to heating to straightening and quenching of the steel pipe requires a short time, which greatly saves time and energy. It not only improves material utilization and processing efficiency, but also greatly improves the performance and strength of the material, and improves the mechanical properties and service life of the cylinder as a whole.

[0004] The present invention has the advantages of low production cost, high processing efficiency and excellent product quality. Although the straightening and quenching of the steel pipe can be realized in one step, the steel pipe needs to be manually discharged after straightening and quenching, which is time-consuming and labor-intensive. The staff has a large workload of continuously discharging the steel pipe. At the same time, after the quenching liquid is quenched, there is no measure to recover it, resulting in waste of the quenching liquid. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art, and a seamless steel pipe straightening and quenching device is proposed. Through the design of the lifting mechanism, the discharged steel pipe is lowered, and then rolled out along the slope of the lifting plate and the filter screen to complete the discharge, and the quenching liquid sprayed during quenching can be recovered, so that the quenching liquid can be recovered, filtered and reused to reduce waste.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A seamless steel pipe straightening and quenching device comprises a base, a gantry is fixedly mounted on the upper end of the base, a collecting box for recovering quenching liquid is fixedly mounted on the upper end of the gantry, a filter is arranged on the upper end surface of the collecting box, and a feeding platform for pushing the quenched seamless steel pipe is fixedly mounted on the side wall of the collecting box; The upper end of the collecting box is provided with a lifting mechanism for discharging seamless steel pipes; Two first straightening rollers are symmetrically arranged inside the gantry, and two slide grooves are provided on the front and rear sides of the gantry. A slide plate is slidably connected inside the slide grooves. Both ends of each first straightening roller are rotatably connected to the two slide plates respectively. A pushing cylinder is fixedly installed in the two slide grooves 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. A driving mechanism for driving the two first straightening rollers to rotate is arranged on the outer side of the gantry; A lifting cylinder is fixedly installed on the upper end of the gantry, a mounting frame is fixedly installed on the telescopic end of the lifting cylinder, and a second straightening roller for straightening seamless steel pipes is rotatably connected to the inner side of the mounting frame; A quenching assembly for quenching seamless steel pipes is arranged inside the gantry.

[0007] Preferably, a transfer frame is fixedly installed on the inner side of the gantry, and the transfer frame is inclined, and the bottom end of the transfer frame is higher than the highest point of the first straightening roller.

[0008] Preferably, an inclined surface is provided at the upper end of the collecting box, and the filter screen is arranged at an incline.

[0009] Preferably, the lifting mechanism includes a second motor fixedly mounted on the lower end of the base, a screw is fixedly mounted on the output shaft of the second motor, the upper end of the screw passes through the collecting box and is threadedly connected to a lifting plate, the end of the lifting plate away from the screw is slidably connected to a limiting plate, and a rectangular opening is provided on the limiting plate for discharging seamless steel pipes.

[0010] Preferably, the screw consists of an upper threaded portion, a lower non-threaded portion and a top stopper.

[0011] Preferably, the lifting plate 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 to slide.

[0012] Preferably, the driving mechanism comprises a first motor fixedly mounted on the side wall of the gantry, two fixing plates are fixedly mounted 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 via a transmission assembly, and both ends of the transmission cylinder are slidably connected with transmission rods; Two mounting plates are fixedly mounted on the side wall of the slide plate, a worm is rotatably connected between the two mounting plates, a worm wheel is rotatably connected to the side wall of the slide plate and is coaxially fixed to the first straightening roller, the worm wheel is meshed with the worm, and the transmission rod is coaxially fixed to the worm.

[0013] Preferably, the outer side of the transmission rod and the inner cavity of the transmission cylinder are both square structures, and 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 passes through the mounting plate and is rotatably connected thereto.

[0014] Preferably, the quenching assembly includes a quenching liquid storage tank fixedly mounted on the upper end of the gantry, a liquid pump is fixedly mounted on the side wall of the quenching liquid storage tank, a cross pipe is fixedly mounted on the inner side of the gantry, a plurality of nozzles are evenly spaced on the side wall of the cross pipe, and the liquid pump is connected to the cross pipe by an infusion tube.

[0015] Preferably, a first baffle and a second baffle are fixedly installed on the inner side of the gantry, and the lower end of the first baffle is fixedly connected to the collection box and is located at the top of the filter screen.

[0016] The present invention has the following beneficial effects: Through the design of the lifting mechanism, the lifting plate descends linearly along the limit plate. As the lifting plate descends, the rectangular opening is gradually opened. When the lifting plate is at the lowest point, the steel pipe can roll out through the rectangular opening, which is convenient for the discharge of the steel pipe. Through the design of the first straightening roller, the pushing cylinder, the slide plate, the slide groove and the driving mechanism, the distance between the two first straightening rollers can be adjusted, thereby facilitating the discharge and straightening of the steel pipe; 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 that the quenching liquid can be recovered, filtered and reused to reduce waste; Through the design of the quenching component, the liquid pump injects the quenching liquid in the quenching liquid storage tank into the horizontal pipe through the infusion tube, and finally the quenching liquid is sprayed from the nozzle to quench the steel pipe, thereby realizing the straightening and quenching of the steel pipe in one step. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a seamless steel pipe straightening and quenching device proposed by the present invention; Figure 2 A cross-sectional view of a seamless steel pipe straightening and quenching device proposed by the present invention; Figure 3 A schematic diagram of a lifting plate of a seamless steel pipe straightening and quenching device proposed by the present invention; Figure 4 The present invention is a schematic diagram of a transmission cylinder of a seamless steel pipe straightening and quenching device.

[0018] In the figure: 1 base, 2 gantry, 3 feeding table, 4 first motor, 5 fixed plate, 6 slide plate, 7 slide 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 limit plate, 18 screw, 19 lifting plate, 20 first baffle, 21 second baffle, 22 first straightening roller, 23 transfer frame, 24 nozzle, 25 horizontal pipe, 26 infusion tube, 27 second straightening roller, 28 mounting frame, 29 liquid pump, 30 quenching liquid storage box. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 cannot be understood as a limitation on the present invention.

[0021] Reference Figure 1-Figure 4 A seamless steel pipe straightening and quenching device comprises a base 1, 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 arranged on the upper end surface of the collecting box 15, an inclined surface is arranged on the upper end of the collecting box 15, the filter screen 16 is arranged obliquely, a feeding table 3 for pushing the quenched seamless steel pipe is fixedly mounted on the side wall of the collecting box 15, 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 collecting box 15, and is located at the top of the filter screen 16; The upper end of the collecting box 15 is provided with a lifting mechanism for discharging seamless steel pipes, and the lifting mechanism includes a second motor 14 fixedly mounted on the lower end of the base 1, and a screw 18 is fixedly mounted on the output shaft of the second motor 14, and the screw 18 is composed of an upper threaded portion, a lower non-threaded portion and a top stopper, and the upper end of the screw 18 passes through the collecting box 15 and is threadedly connected with a lifting plate 19, and the lifting plate 19 is composed of horizontal plates at both ends and a middle inclined plate, and a strip opening is provided on the horizontal plate at the right end for the limit plate 17 to slide, and the end of the lifting plate 19 away from the screw 18 is slidably connected to the limit plate 17, and a rectangular opening for discharging seamless steel pipes is provided on the limit plate 17; Two first straightening rollers 22 are symmetrically arranged inside the gantry 2, and a transfer frame 23 is fixedly installed on the inner side of the gantry 2. The transfer frame 23 is inclined, and the bottom end is higher than the highest point of the first straightening roller 22. 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 respectively. Push cylinders are fixedly installed in the two slide grooves 7 on the same side. The two push cylinders are symmetrically arranged, and the telescopic ends of the push cylinders are fixedly connected to the slide plate 6. A driving mechanism for driving the two first straightening rollers 22 to rotate is arranged on the outer side of the gantry 2, and the driving mechanism includes a first motor 4 fixedly mounted on the side wall of the gantry 2, and two fixing plates 5 are fixedly mounted on the side wall of the gantry 2, and a rotatable transmission cylinder 10 is arranged between the two fixing plates 5, and the transmission cylinder 10 is connected to the first motor 4 through a transmission assembly, and both ends of the transmission cylinder 10 are slidably connected with a transmission rod 9, and the outer side of the transmission rod 9 and the inner cavity of the transmission cylinder 10 are both square structures, and 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, and the rotating shaft passes through the mounting plate 11 and is rotatably connected thereto; 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 a transmission rod 9 is coaxially fixed to the worm 8; A lifting cylinder 13 is fixedly installed on the upper end of the gantry 2, and a mounting frame 28 is fixedly installed on the telescopic end of the lifting cylinder 13. 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, and the quenching assembly includes a quenching liquid storage tank 30 fixedly mounted on the upper end of the gantry 2, a liquid pump 29 is fixedly mounted on the side wall of the quenching liquid storage tank 30, a cross pipe 25 is fixedly mounted on the inner side of the gantry 2, a plurality of nozzles 24 are evenly spaced on the side wall of the cross pipe 25, and the liquid pump 29 is connected to the cross pipe 25 via a liquid infusion tube 26.

[0022] Working principle: During operation, 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; At this time, the first motor 4 is started, and the first motor 4 drives the transmission cylinder 10 to rotate through the transmission assembly, and the rotation of the transmission cylinder 10 drives the transmission rod 9 to rotate, and the rotation of the transmission rod 9 drives the worm 8 to rotate. Since the worm 8 is meshed with the worm wheel 12, the rotation of the two first straightening rollers 22 is realized, and then the telescopic end of the lifting cylinder 13 pushes the second straightening roller 27 down, and the three rollers press the steel pipe together for rotation straightening; Subsequently, the liquid pump 29 is started to inject the quenching liquid in the quenching liquid storage tank 30 into the transverse pipe 25 through the liquid infusion pipe 26, and finally the quenching liquid is sprayed from the nozzle 24 to quench the steel pipe, thereby achieving straightening and quenching of the steel pipe in one step; Start the pushing cylinder to pull the two slides 6 to both sides respectively, so that the two first straightening rollers 22 are pulled apart, so that the steel pipe will fall from between the two first straightening rollers 22 and fall onto the lifting plate 19, and the limit plate 17 will limit it. At this time, turn on the second motor 14, and the rotation of the second motor 14 drives the screw 18 to rotate, so that the lifting plate 19 drops straight down along the limit plate 17. As the lifting plate 19 drops, the rectangular opening is gradually opened. When the lifting plate 19 is at the lowest point, the steel pipe can roll out through the rectangular opening and finally fall on the feeding table 3 for subsequent processing.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which 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).

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 lifting mechanism comprises a second motor (14) fixedly mounted at 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); one 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).

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

6. A seamless steel pipe straightening and quenching device according to claim 4, 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.

7. 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).

8. The seamless steel pipe straightening and quenching device according to claim 7, 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.

9. The seamless steel pipe straightening and quenching device according to claim 1, characterized in that: 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).

10. 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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