Straightening device for seamless steel pipe production

Abstract

The utility model discloses a straightening device for seamless steel tube production, which comprises a straightening underframe, fixed vertical plates are symmetrically arranged at the upper end of the straightening underframe, a rotating rolling frame is erected between the two fixed vertical plates, and first telescopic cylinders are fixedly embedded in two sides of the rotating rolling frame. By designing a rotating rolling frame, first telescopic cylinders, a moving frame, a straightening roller, a limiting rectangular plate, a driven gear, a driving gear with a shaft, a speed reducer and a driving motor to be matched with a control assembly, the two first telescopic cylinders extend to push the moving frame and the straightening roller to get close to each other, and a seamless steel pipe located in the rotating rolling frame is clamped and fixed; and then a speed reducer and a driving motor drive a driving gear with a shaft to rotate to be meshed with a driven gear to drive a rotating rolling frame, so that the straightening rollers rotate along with the rotating rolling frame, the seamless steel pipe is comprehensively straightened from the outside, the straightening rollers apply the same pressure to the seamless steel pipe, and the straightening effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of straightening devices for seamless steel pipe production, and specifically relates to a straightening device for seamless steel pipe production. Background Technique

[0002] Seamless steel pipes are made by piercing a whole round steel, and steel pipes without welds on the surface are called seamless steel pipes. They are rolled from ordinary carbon structural steel, low-alloy structural steel or alloy structural steel, and have the largest output. They are mainly used as pipes for transporting fluids or structural parts. To ensure the geometric shape and mechanical properties of seamless steel pipes, a straightening device is required to straighten them during the production of seamless steel pipes;

[0003] For example, a straightening device for seamless steel pipe production disclosed in the authorized announcement CN221184244U includes a main body. A straightening structure is installed inside the main body. The straightening structure includes: two electric push rods, a lifting seat, a fixed seat, two sliding seats, several correction wheels, an adjustment component and two cleaning components. The utility model relates to the technical field of seamless steel pipe production. Operators place the steel pipe inside the main body, and then connect one end of the steel pipe to the traction device. At this time, several straightening wheels can perform continuous straightening operations on the steel pipe. The correction wheels in this device are symmetrically arranged and cannot be in full contact with the outer side of the seamless steel pipe. Each point on the outer wall of the seamless steel pipe may be unevenly stressed, and the seamless steel pipe cannot be fully straightened, affecting the straightening effect. Moreover, the specifications of each correction wheel are fixed, and it is impossible to ensure the same straightening effect for seamless steel pipes of different specifications. Content of the Utility Model

[0004] The purpose of the utility model is to provide a straightening device for seamless steel pipe production, so as to solve the problems raised in the above background technique that the symmetrically arranged correction wheels cannot be in full contact with the outer side of the seamless steel pipe, each point on the outer wall of the seamless steel pipe may be unevenly stressed, the seamless steel pipe cannot be fully straightened, affecting the straightening effect, and the specifications of each correction wheel are fixed, and it is impossible to ensure the same straightening effect for seamless steel pipes of different specifications.

[0005] To achieve the above object, the present utility model provides the following technical solution: A straightening device for seamless steel pipe production, including a straightening chassis. On the upper end of the straightening chassis, fixed vertical plates are symmetrically arranged. Between the two fixed vertical plates, a rotating roller frame is erected. On both sides of the rotating roller frame, first telescopic cylinders are fixedly embedded. The end of the first telescopic cylinder extends into the interior of the rotating roller frame. Inside the rotating roller frame, moving frames are symmetrically arranged. On one side of the moving frame close to the center of the rotating roller frame, straightening rollers are symmetrically erected. On the side of the moving frame away from the straightening rollers, limiting rectangular plates are symmetrically arranged. The limiting rectangular plates extend through the side wall of the rotating roller frame on the same side. A control assembly is arranged outside the rotating roller frame. At one end of the rotating roller frame, a driven gear is fixedly arranged. On the plate body of the fixed vertical plate on the same side as the driven gear, a belted driving gear is installed. One end of the belted driving gear is fixedly connected to a speed reducer. The bottom end of the speed reducer is fixedly connected to a driving motor. The seamless steel pipe is fully straightened from the outside, so that the straightening rollers apply the same pressure to the seamless steel pipe to ensure the straightening effect.

[0006] Preferably, the control assembly includes a controller and a power module. Controllers are installed on both sides of the rotating roller frame. On one side of the controller, a power module is fixedly installed. The power module is electrically connected to the controller and the first telescopic cylinder, so that the driving control components of the first telescopic cylinder are on the same side of the rotating roller frame, which is convenient for subsequent wiring control.

[0007] Preferably, the belted driving gear is fixedly arranged at the bottom of the fixed vertical plate. The belted driving gear meshes with the driven gear to form a linkage part with the driving motor as the power source.

[0008] Preferably, second telescopic cylinders are symmetrically arranged on the top surface of the straightening chassis. At the top end of the second telescopic cylinder, a support frame is fixedly arranged. Guide rods are symmetrically arranged on the bottom surface of the support frame. The guide rods extend through the straightening chassis, making the lifting of the support frame more stable.

[0009] Preferably, the support frame is integrally composed of a horizontal plate, inclined plates, supporting blocks, and supporting rollers. The inclined plates are symmetrically arranged on the top of the horizontal plate. The supporting blocks are symmetrically arranged on the sides of the inclined plates. The supporting rollers are fixedly erected between the corresponding supporting blocks to support the seamless steel pipe and allow the seamless steel pipe to move.

[0010] Preferably, legs are arranged at the bottom end of the straightening chassis. The legs are symmetrically distributed in pairs to enhance the support stability.

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

[0012] By designing a rotating roller frame, a first telescopic cylinder, a moving frame, straightening rollers, a limiting rectangular plate, a driven gear, a belt - shaft driving gear, a reducer, a driving motor and a matching control assembly, the two first telescopic cylinders extend to push the moving frame and the straightening rollers closer to each other to clamp and fix the seamless steel pipe inside the rotating roller frame. Then, the reducer and the driving motor drive the belt - shaft driving gear to rotate and mesh with the driven gear to drive the rotating roller frame, so that the straightening rollers follow the rotation, and the seamless steel pipe is comprehensively straightened from the outside, and the straightening rollers apply the same pressure to the seamless steel pipe to ensure the straightening effect. Brief Description of the Drawings

[0013] Figure 1 It is a three - dimensional structural schematic diagram of the present utility model;

[0014] Figure 2 It is a structural schematic diagram of the support frame of the present utility model;

[0015] Figure 3 It is the front view of the present utility model;

[0016] Figure 4 It is the present utility model Figure 1 The partial enlarged structural schematic diagram at position A in it.

[0017] In the figure: 1, straightening bottom frame; 2, leg; 3, fixed vertical plate; 4, rotating roller frame; 5, first telescopic cylinder; 6, moving frame; 7, straightening roller; 8, limiting rectangular plate; 9, controller; 10, power supply module; 11, driven gear; 12, belt - shaft driving gear; 13, reducer; 14, driving motor; 15, second telescopic cylinder; 16, support frame; 17, guide rod; 18, supporting roller. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0019] Please refer to Figures 1-4, the present utility model provides a straightening device for seamless steel pipe production, including a straightening chassis 1. Fixed vertical plates 3 are symmetrically arranged at the upper end of the straightening chassis 1. A rotating roller frame 4 is erected between the two fixed vertical plates 3. Both ends of the rotating roller frame 4 are clamped inside the corresponding fixed vertical plates 3 and the rotating roller frame 4 can rotate. First telescopic cylinders 5 are fixedly embedded on both sides of the rotating roller frame 4. The end of the first telescopic cylinder 5 extends into the rotating roller frame 4. Moving frames 6 are symmetrically arranged inside the rotating roller frame 4. Straightening rollers 7 are symmetrically erected on the side of the moving frame 6 close to the center of the rotating roller frame 4. The whole straightening roller 7 can rotate. Limit rectangular plates 8 are symmetrically arranged on the side of the moving frame 6 away from the straightening roller 7. The limit rectangular plates 8 extend through the side wall of the rotating roller frame 4 on the same side. A control component is arranged outside the rotating roller frame 4. The control component includes a controller 9 and a power supply module 10. Controllers 9 are installed on both sides of the rotating roller frame 4. A power supply module 10 is fixedly installed on one side of the controller 9. The power supply module 10 is electrically connected to the controller 9 and the first telescopic cylinder 5 for controlling the corresponding first telescopic cylinder 5. And the device is externally connected with an overall control component. One end of the rotating roller frame 4 is fixedly provided with a driven gear 11. A belted driving gear 12 is installed on the plate body of the fixed vertical plate 3 on the same side of the driven gear 11. One end of the belted driving gear 12 is fixedly connected with a speed reducer 13. The bottom end of the speed reducer 13 is fixedly connected with a driving motor 14. The belted driving gear 12 is fixedly arranged at the bottom of the fixed vertical plate 3. The belted driving gear 12 meshes with the driven gear 11;

[0020] When straightening the seamless steel pipe, the seamless steel pipe is fixed at the symmetrical center part of each straightening roller 7 through the conveying device and the fixing device configured in the straightening process. The first telescopic cylinder 5 is controlled to extend through the power supply module 10 and the controller 9. The extension of the first telescopic cylinder 5 pushes the moving frame 6 and the straightening roller 7 to approach each other until the surface of the straightening roller 7 and the surface of the seamless steel pipe are in tight contact. Then, the driving motor 14 is controlled to operate through the external control component. The operation of the driving motor 14 drives the belted driving gear 12 to rotate. The rotation of the belted driving gear 12 meshes with the driven gear 11, thereby driving the rotating roller frame 4 to rotate, so that each straightening roller 7 rotates around the seamless steel pipe to perform comprehensive extrusion and straightening on it. The driving motor 14 can be selected as a forward and reverse motor;

[0021] Second telescopic cylinders 15 are symmetrically arranged on the top surface of the straightening chassis 1. A support frame 16 is fixedly arranged at the top end of the second telescopic cylinder 15. Guide rods 17 are symmetrically arranged on the bottom surface of the support frame 16. The guide rods 17 extend through the straightening chassis 1. The support frame 16 is integrally composed of a horizontal plate, an inclined plate, a supporting block, and a supporting roller 18. The inclined plates are symmetrically arranged on the top of the horizontal plate. The supporting blocks are symmetrically arranged on the side surfaces of the inclined plates. The supporting roller 18 is fixedly erected between the corresponding supporting blocks. Legs 2 are arranged at the bottom end of the straightening chassis 1. The legs 2 are symmetrically distributed in pairs;

[0022] Before placing the seamless steel pipe, first determine its central position according to the specifications of the seamless steel pipe. At the same time, control the second telescopic cylinder 15 to drive the support frame 16 to move up and down in cooperation with the original supporting conveying device and fixing device until the center position of the seamless steel pipe corresponds to the symmetrical center position of the rotating roller frame 4. Then push the seamless steel pipe to move until it extends into the rotating roller frame 4.

[0023] When the embodiment of the present application is in use:

[0024] First, determine the central position of the seamless steel pipe according to its specifications. At the same time, control the second telescopic cylinder 15 to drive the support frame 16 to move up and down in cooperation with the original supporting conveying device and fixing device until the center position of the seamless steel pipe corresponds to the symmetrical center position of the rotating roller frame 4. Then push the seamless steel pipe to move until it extends into the rotating roller frame 4 and is fixed. Fix the seamless steel pipe at the symmetrical center part of each straightening roller 7 through the conveying device and fixing device provided in the straightening process. Control the first telescopic cylinder 5 to extend through the power supply module 10 and the controller 9. The extension of the first telescopic cylinder 5 pushes the moving frame 6 and the straightening roller 7 to approach each other until the surfaces of the straightening roller 7 and the seamless steel pipe are in tight contact. Then control the driving motor 14 to operate through an external control component. The operation of the driving motor 14 drives the belt shaft driving gear 12 to rotate. The rotation of the belt shaft driving gear 12 meshes with the driven gear 11, thereby driving the rotating roller frame 4 to rotate, so that each straightening roller 7 rotates around the seamless steel pipe to perform comprehensive extrusion and straightening on it. Repeat the operation.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A straightening device for seamless steel pipe production, comprising a straightening chassis (1), characterized in that: On the upper end of the straightening chassis (1), fixed vertical plates (3) are symmetrically arranged. A rotating roller frame (4) is mounted between the two fixed vertical plates (3). On both sides of the rotating roller frame (4), first telescopic cylinders (5) are fixedly embedded. The end of the first telescopic cylinder (5) extends into the rotating roller frame (4). Inside the rotating roller frame (4), moving frames (6) are symmetrically arranged. On the side of the moving frame (6) close to the center of the rotating roller frame (4), straightening rollers (7) are symmetrically mounted. On the side of the moving frame (6) away from the straightening rollers (7), limit rectangular plates (8) are symmetrically arranged. The limit rectangular plates (8) extend through the side wall of the rotating roller frame (4) on the same side. A control assembly is arranged outside the rotating roller frame (4). One end of the rotating roller frame (4) is fixedly provided with a driven gear (11). On the plate body of the fixed vertical plate (3) on the same side as the driven gear (11), a belted driving gear (12) is mounted. One end of the belted driving gear (12) is fixedly connected to a speed reducer (13). The bottom end of the speed reducer (13) is fixedly connected to a driving motor (14).

2. The straightening device for seamless steel pipe production according to claim 1, characterized in that: The control assembly includes a controller (9) and a power supply module (10). Controllers (9) are mounted on both sides of the rotating roller frame (4). On one side of the controller (9), a power supply module (10) is fixedly installed. The power supply module (10) is electrically connected to the controller (9) and the first telescopic cylinder (5).

3. The straightening device for seamless steel pipe production according to claim 1, characterized in that: The belted driving gear (12) is fixedly arranged at the bottom of the fixed vertical plate (3). The belted driving gear (12) meshes with the driven gear (11).

4. A straightening device for seamless steel pipe production according to claim 1, characterized in that: On the top surface of the straightening chassis (1), second telescopic cylinders (15) are symmetrically arranged. The top end of the second telescopic cylinder (15) is fixedly provided with a support frame (16). On the bottom surface of the support frame (16), guide rods (17) are symmetrically arranged. The guide rods (17) extend through the straightening chassis (1).

5. The straightening device for seamless steel pipe production according to claim 4, wherein: The support frame (16) is integrally composed of a horizontal plate, inclined plates, support blocks, and support rollers (18). The inclined plates are symmetrically arranged on the top of the horizontal plate. The support blocks are symmetrically arranged on the sides of the inclined plates. The support rollers (18) are fixedly mounted between the corresponding support blocks.

6. The straightening device for seamless steel pipe production according to claim 1, characterized in that: On the bottom end of the straightening chassis (1), legs (2) are arranged. The legs (2) are symmetrically distributed in pairs.

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