End rounding device for steel pipe machining

Abstract

The utility model relates to the technical field of steel pipe processing, in particular to an end rounding device for steel pipe processing, which comprises a base, two driving motors are fixedly mounted on the base, driving ends of the driving motors are in transmission connection with driving wheels, the distance between the two driving wheels is matched with the outer diameter of a steel pipe, a rotating motor is fixedly mounted on the base, and the rotating motor is in transmission connection with the driving wheels. The driving end of the rotating motor is in transmission connection with a mounting base, a plurality of shaft rods are rotationally connected to the mounting base, repairing wheels are fixedly mounted at the other ends of the shaft rods, an outer intersecting circle formed by the multiple repairing wheels is matched with the inner diameter of a steel pipe, and a hydraulic cylinder is fixedly mounted on the mounting base. The multiple repairing wheels make contact with the inner wall of the steel pipe, then the rotating motor drives the repairing wheels to rotate on the inner wall of the steel pipe so that the inner wall of the steel pipe can be rounded, meanwhile, the driving motor drives the driving wheel to rotate so that the steel pipe can slowly move away from the rotating motor, and the repairing wheels can relatively slowly move towards the outer side from the interior of the steel pipe for repairing.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, in particular to a device for rounding the end of a steel pipe. Background Art

[0002] When the steel pipe is subjected to high-temperature processing, the temperature is high and the steel pipe is relatively soft. The joints at both ends are easily deformed when the steel pipe is transported. Therefore, after the shaping is completed, the steel pipe needs to be rounded at both ends. For example, Chinese patent CN2018203242326 provides an automatic steel pipe rounding machine, which rounds the steel pipe by driving the correction head to rotate by a motor. This design requires that the diameter of the correction head matches the inner diameter of the steel pipe to achieve effective repair. However, before the steel pipe is repaired, the diameter is small and the correction head is difficult to be smoothly placed inside the steel pipe. Therefore, this technical solution is only applicable to steel pipes with deformation at only one end. The correction head is passed from one end to the end to be repaired for repair. Since the rotating shaft needs to pass through the entire steel pipe, there are also requirements for the length of the steel pipe, which cannot be too long. However, in actual situations, the length of the steel pipe is relatively long, and in the actual high-temperature manufacturing process, both ends of the steel pipe will be deformed due to transportation. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a device for rounding the ends of steel pipes, comprising a base, on which two driving motors are fixedly mounted, the driving ends of the driving motors are transmission-connected to driving wheels, the spacing between the two driving wheels matches the outer diameter of the steel pipe, a rotating motor is fixedly mounted on the base, the driving end of the rotating motor is transmission-connected to a mounting seat, a plurality of shafts are rotatably connected to the mounting seat, a repair wheel is fixedly mounted on the other end of the shaft, the outer circle formed by the plurality of repair wheels matches the inner diameter of the steel pipe, a hydraulic cylinder is fixedly mounted on the mounting seat, a plurality of adjusting rods are rotationally connected to the moving end of the hydraulic cylinder, and the other ends of the plurality of adjusting rods are rotationally connected to the plurality of shafts in a one-to-one correspondence.

[0004] Preferably, a plurality of fixed pulleys are fixedly mounted on the base, and the plurality of fixed pulleys are distributed in a straight line and at equal distances on a side of the driving motor away from the rotating motor.

[0005] Preferably, the outer side wall of the driving wheel is a concave arc surface, and the curvature matches the outer side wall of the steel pipe.

[0006] Preferably, it further comprises two linear modules parallel to each other, a mounting plate is fixedly mounted on the driving ends of the two linear modules, and the rotating motor is fixedly mounted on the mounting plate.

[0007] Preferably, a bearing is fixedly mounted on the mounting plate, and the mounting seat is fixedly connected to the inner wall of the bearing.

[0008] Preferably, a polygonal column is fixedly mounted on the movable end of the hydraulic cylinder, the number of sides of the polygonal column is equal to the number of the shaft rods, and a plurality of the adjustment rods are rotatably mounted on each side of the polygonal column in a one-to-one correspondence.

[0009] Preferably, the polygonal prism is a triangular prism.

[0010] The utility model has the following beneficial effects:

[0011] The hydraulic cylinder contracts and drives the adjusting rod to rotate and pull the shaft rod, so that several repair wheels gather toward the middle, so that the repair wheel can smoothly extend into the steel pipe from the outside. Therefore, there is no need to pass through the entire steel pipe, and it only needs to extend from the side of the steel pipe to be repaired. Therefore, steel pipes that are damaged on both sides can also be repaired. After the repair wheel extends into the steel pipe, the hydraulic cylinder extends and drives the adjusting rod to rotate to push the shaft rod to reset, so that several repair wheels contact the inner wall of the steel pipe, and then the repair wheel is driven by the rotating motor to rotate on the inner wall of the steel pipe to make the inner wall of the steel pipe more round. At the same time, the driving motor drives the driving wheel to rotate so that the steel pipe slowly moves away from the rotating motor, so that the repair wheel moves relatively slowly from the inside of the steel pipe to the outside for repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure provided by the utility model.

[0013] Figure 2 The utility model provides Figure 1 Enlarged view of point A in .

[0014] Figure 3 It is a structural schematic diagram of a polygonal column and an adjusting rod provided by the utility model.

[0015] Attached Figure 1-3 The structures represented by the labels are listed below:

[0016] 1. Base; 2. Driving wheel; 3. Driving motor; 4. Fixed pulley; 5. Linear module; 6. Mounting plate; 7. Rotating motor; 8. Bearing; 9. Mounting seat; 10. Shaft; 11. Repair wheel; 12. Hydraulic cylinder; 13. Polygonal column; 14. Adjustment rod. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0018] It should be noted that when a part or component is considered to be "connected", "located", or "assembled" on another part or component, it may be directly disposed on the other part or component or there may be a central part or component at the same time. The terms "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only.

[0019] In a specific embodiment, Figure 1-3 As shown, a device for making the end of a steel pipe more rounded comprises a base 1, on which two driving motors 3 are fixedly mounted, the driving ends of the driving motors 3 are transmission-connected with driving wheels 2, the spacing between the two driving wheels 2 matches the outer diameter of the steel pipe, a rotating motor 7 is fixedly mounted on the base 1, the driving end of the rotating motor 7 is transmission-connected with a mounting seat 9, a plurality of shafts 10 are rotationally connected to the mounting seat 9, a repair wheel 11 is fixedly mounted on the other end of the shaft 10, the outer circle formed by the plurality of repair wheels 11 matches the inner diameter of the steel pipe, a hydraulic cylinder 12 is fixedly mounted on the mounting seat 9, a plurality of adjusting rods 14 are rotationally connected to the moving end of the hydraulic cylinder 12, and the other ends of the plurality of adjusting rods 14 are rotationally connected to the plurality of shafts 10 in a one-to-one correspondence.

[0020] In this embodiment, a plurality of fixed pulleys 4 are fixedly mounted on the base 1, and the plurality of fixed pulleys 4 are distributed in a straight line and at equal distances on the side of the drive motor 3 away from the rotating motor 7; after passing through between the two drive motors 3, the steel pipe falls on the fixed pulley 4 to move, so as to prevent the steel pipe from tilting with the drive motor 3 as a fulcrum. When the steel pipe is placed on the plurality of fixed pulleys 4, the central axis of the steel pipe passes between the two drive motors 3 and passes through the center of the outer circle formed by the plurality of repair wheels 11, so that the inner cavity of the steel pipe in the repair area will not be misaligned with the inner cavity of other places of the steel pipe.

[0021] In this embodiment, the outer wall of the driving wheel 2 is a concave arc surface, and the curvature matches the outer wall of the steel pipe, increasing the contact area between the driving wheel 2 and the steel pipe, making the driving steel pipe move more smoothly without sliding or scratching the steel pipe.

[0022] In this embodiment, two linear modules 5 are further included, and a mounting plate 6 is fixedly mounted on the driving ends of the two linear modules 5. The rotating motor 7 is fixedly mounted on the mounting plate 6, so that before the steel pipe is inserted into the two driving wheels 2, the linear module 5 can move the rotating motor 7 to one side to facilitate the insertion of the steel pipe between the two driving wheels 2. After the steel pipe is installed, the rotating motor 7 is reset through the linear module 5, and then the driving motor 3 is controlled to drive the driving wheel 2 to reverse and move the steel pipe to the side close to the rotating motor 7 to wrap a plurality of repair wheels 11.

[0023] Furthermore, a bearing 8 is fixedly mounted on the mounting plate 6, and the mounting seat 9 is fixedly connected to the inner wall of the bearing 8; that is, the bearing 8 bears the weight of the mounting seat 9, the shaft 10, the repair wheel 11, and the hydraulic cylinder 12 to prevent the driving shaft of the rotating motor 7 from being bent after being too heavy for a long time.

[0024] According to actual needs, the above-mentioned device for making the end of the steel pipe rounder can be further optimized and / or improved:

[0025] In this embodiment, a polygonal column 13 is fixedly installed on the movable end of the hydraulic cylinder 12, and the number of sides of the polygonal column 13 is equal to the number of the shaft rod 10. A number of adjusting rods 14 are rotatably installed on each side of the polygonal column 13 in a one-to-one manner. When the adjusting rod 14 is perpendicular to the side corresponding to the polygonal column 13, the two ends of the adjusting rod 14 are respectively in contact with the side of the polygonal column 13 and the side of the shaft rod 10; after the adjusting rod 14 props up the shaft rod 10, the adjusting rod 14 can provide support for the shaft rod 10 to prevent the shaft rod 10 from rotating toward the side close to the hydraulic cylinder 12, and the adjusting rod 14 is perpendicular to the polygonal column 13 when rounding, that is, the extrusion force transmitted in the steel pipe will only be transmitted to the polygonal column 13 to offset each other when rounding, and will not be transmitted to the hydraulic cylinder 12, that is, the hydraulic cylinder 12 does not need to work when rounding.

[0026] like Figure 3 As shown, specifically, the polygonal column 13 has three sides, the polygonal column 13 is a triangular prism, the cross section of the shaft 10 is a rectangle, and when it is rounder, the three repair wheels 11 rotate and contact with the inner wall of the steel pipe to restore the inner cavity of the steel pipe to a cylindrical shape.

[0027] The connecting line of the connection point between the rotating motor 7 and the mounting seat 9 and the center of the outer circle formed by the plurality of repair wheels 11 coincides with the central axis of the inner cavity of the steel pipe, the central axis of the polygonal column 13 coincides with the central axis of the inner cavity of the steel pipe, and when the adjusting rod 14 is perpendicular to the side surface of the corresponding polygonal column 13, the shaft rod 10 is parallel to the steel pipe.

[0028] To sum up: the hydraulic cylinder 12 contracts to drive the adjusting rod 14 to rotate and pull the shaft 10, so that several repair wheels 11 gather toward the middle, so that the repair wheel 11 can smoothly extend from the outside into the steel pipe. Therefore, there is no need to pass through the entire steel pipe, and it is only necessary to extend it from the side of the steel pipe to be repaired. Therefore, steel pipes that are damaged on both sides can also be repaired. After the repair wheel 11 extends into the steel pipe, the hydraulic cylinder 12 extends to drive the adjusting rod 14 to rotate and push the shaft 10 to reset, so that several repair wheels 11 contact the inner wall of the steel pipe, and then the rotating motor 7 drives the repair wheel 11 to rotate on the inner wall of the steel pipe to make the inner wall of the steel pipe more round. At the same time, the driving motor 3 drives the driving wheel 2 to rotate so that the steel pipe slowly moves away from the rotating motor 7, so that the repair wheel 11 relatively moves slowly from the inside of the steel pipe to the outside for repair.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A device for rounding the end of a steel pipe, characterized in that: The invention comprises a base (1), on which two driving motors (3) are fixedly mounted, the driving end of the driving motor (3) is drivingly connected to a driving wheel (2), the spacing between the two driving wheels (2) matches the outer diameter of a steel pipe, the base (1) is fixedly mounted with a rotating motor (7), the driving end of the rotating motor (7) is drivingly connected to a mounting seat (9), the mounting seat (9) is rotatably connected to a plurality of shafts (10), the other end of the shafts (10) is fixedly mounted with a repair wheel (11), the outer circle formed by the plurality of repair wheels (11) matches the inner diameter of the steel pipe, the mounting seat (9) is fixedly mounted with a hydraulic cylinder (12), the movable end of the hydraulic cylinder (12) is rotatably connected to a plurality of adjusting rods (14), the other ends of the plurality of adjusting rods (14) are rotatably connected to the plurality of shafts (10) in a one-to-one correspondence.

2. The device for rounding the end of a steel pipe according to claim 1, characterized in that: A plurality of fixed pulleys (4) are also fixedly mounted on the base (1), and the plurality of fixed pulleys (4) are distributed in a straight line and at equal distances on a side of the drive motor (3) away from the rotating motor (7).

3. The device for rounding the end of a steel pipe according to claim 1, characterized in that: The outer side wall of the driving wheel (2) is an inwardly concave arc surface, and the arc matches the outer side wall of the steel pipe.

4. The device for rounding the end of a steel pipe according to claim 1, characterized in that: It also comprises two mutually parallel linear modules (5), a mounting plate (6) being fixedly mounted on the driving ends of the two linear modules (5), and the rotating motor (7) being fixedly mounted on the mounting plate (6).

5. The device for rounding the end of a steel pipe according to claim 4, characterized in that: A bearing (8) is fixedly mounted on the mounting plate (6), and the mounting seat (9) is fixedly connected to the inner side wall of the bearing (8).

6. The device for rounding the end of a steel pipe according to claim 1, characterized in that: A polygonal column (13) is fixedly mounted on the movable end of the hydraulic cylinder (12), the number of side faces of the polygonal column (13) being equal to the number of the shaft rod (10), and a plurality of adjusting rods (14) are rotatably mounted on each side face of the polygonal column (13) in a one-to-one correspondence.

7. The device for rounding the end of a steel pipe according to claim 6, characterized in that: The polygonal prism (13) is a triangular prism.

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