Large-diameter welded pipe pre-bending equipment with deviation rectifying function

Abstract

The utility model relates to the field of welded pipe pre-bending equipment, and discloses large-diameter welded pipe pre-bending equipment with a deviation rectifying function, which comprises a frame, a conveying belt is arranged at the upper end of the frame, a deviation rectifying mechanism is arranged on the surface of the frame, the deviation rectifying mechanism comprises a threaded rod, a hinge rod is hinged to the lower surface of a sliding plate, and the hinge rod is hinged to the lower surface of the sliding plate. And sliding blocks are hinged to the ends, away from the sliding plates, of the hinge rods, sliding wheels are rotationally connected to the side walls of the sliding blocks, and a cleaning mechanism is arranged on the surface of the frame. According to the utility model, the deviation rectifying mechanism is arranged, the threaded rod is manually rotated to control the sliding plate to slide up and down, the deviation rectifying mechanism can be adjusted according to different diameters of the welded pipes, and the sliding wheels on three sides are in contact with the surfaces of the welded pipes, so that the welded pipes can be straightened, and the situation that the roundness is not up to the standard due to deviation of the welded pipes is reduced; and overlarge single-side stress of the pre-bending roller caused by deviation of the steel plate is reduced, and abrasion of equipment after long-term operation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of welded pipe pre-bending equipment, and in particular to a large-diameter welded pipe pre-bending edge equipment with a correction function. Background Technology

[0002] Large-diameter welded pipes refer to welded steel pipes with a large diameter. They are usually made by rolling steel plates or strips into shape and then welding them. They are widely used in petroleum, natural gas, water conservancy, construction, bridges, municipal engineering and other fields.

[0003] Large-diameter welded pipe pre-bending equipment is a special mechanical equipment used to pre-bend the edges of steel plates or strips for large-diameter straight seam welded pipes. Its core function is to eliminate the "straight edge effect" caused by edge stress concentration during subsequent pipe rolling, ensuring the geometric accuracy, welding quality and overall structural strength of the welded pipe.

[0004] However, traditional large-diameter welded pipe pre-bending equipment does not have a correction mechanism, which may cause the steel pipe to deviate, resulting in substandard roundness and defects such as peach-shaped or polygonal pipes. At the same time, the deviation of the steel plate causes excessive force on one side of the pre-bending roller, which will aggravate the wear of the equipment after long-term operation. Therefore, a large-diameter welded pipe pre-bending equipment with correction function is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a pre-bending device for large-diameter welded pipes with a correction function. It aims to improve the problem of substandard roundness of welded pipes caused by steel pipe deviation in the prior art. At the same time, steel plate deviation causes excessive force on one side of the pre-bending roller, which will aggravate the wear of the equipment after long-term operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pre-bending device for large-diameter welded pipes with a correction function, comprising a frame, a conveyor belt on the surface of the frame, a pre-bending mechanism at the upper end of the frame, and a correction mechanism on the inner sidewall of the frame.

[0007] The correction mechanism includes a threaded rod, the outer wall of which is rotatably connected to a fixed plate, and a sliding plate threadedly connected to the outer wall of the threaded rod. Two sets of hinged rods are hinged to the lower surface of the sliding plate, and a sliding block is hinged to the end of the two sets of hinged rods away from the sliding plate. A sliding wheel is rotatably connected to the side wall of the sliding block, and a cleaning mechanism is provided on the surface of the frame.

[0008] As a further description of the above technical solution:

[0009] The cleaning mechanism includes a fixing bolt, through which a connecting seat is threadedly connected, a sliding seat is fixedly connected to the side wall of the connecting seat, a connecting block is elastically connected to the inner wall of the connecting seat by a spring, and a brush head is fixedly connected to the side wall of the connecting block.

[0010] As a further description of the above technical solution:

[0011] The outer sidewall of the fixing plate is fixedly connected to the inner sidewall at the top of the frame.

[0012] As a further description of the above technical solution:

[0013] The surface of the frame is provided with a sliding groove, and the bottom end of the sliding block is provided with a protrusion. The protrusion of the sliding block is slidably connected in the sliding groove on the surface of the frame.

[0014] As a further description of the above technical solution:

[0015] The inner sidewall of the frame has a groove, and the sidewall of the sliding plate has a protrusion. The protrusion of the sliding plate is slidably connected to the groove of the frame.

[0016] As a further description of the above technical solution:

[0017] The surface of the connecting seat is provided with protrusions, and the side wall of the frame is provided with sliding grooves. The protrusions of the connecting seat are slidably connected in the sliding grooves of the side wall of the frame.

[0018] As a further description of the above technical solution:

[0019] The side wall of the frame is provided with a threaded groove, and the fixing bolt is threaded into the threaded groove of the side wall of the frame.

[0020] As a further description of the above technical solution:

[0021] One end of the spring is fixedly connected to the side wall of the connecting seat, and the other end of the spring is fixedly connected to the side wall of the connecting block. The outer side wall of the connecting block is slidably connected to the inner side wall of the sliding seat.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, a correction mechanism is provided. The sliding plate slides up and down by manually rotating the threaded rod. The two sets of hinged rods drive the sliding blocks on both sides to move closer or further apart. It can be adjusted according to the different diameters of the welded pipe. The welded pipe can be straightened by the sliding wheels on three sides contacting the surface of the welded pipe, reducing the roundness defects caused by the welded pipe running off-center, reducing the excessive force on one side of the pre-bending roller caused by the steel plate running off-center, and reducing the wear of the equipment after long-term operation.

[0024] 2. In this utility model, a cleaning mechanism is provided. The welded pipe contacts the brush head, and the brush head is squeezed to clean the surface of the steel pipe, removing impurities from the surface of the welded pipe and reducing the error caused by impurities in the correction mechanism. At the same time, the cleaning mechanism can be quickly disassembled and cleaned by fixing bolts. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a pre-bending device for large-diameter welded pipes with a correction function proposed in this utility model.

[0026] Figure 2 This is a partial three-dimensional structural diagram of the frame of a pre-bending device for large-diameter welded pipes with a correction function proposed in this utility model.

[0027] Figure 3 This is a partial three-dimensional structural diagram of the frame and sliding plate of a pre-bending device for large-diameter welded pipes with correction function proposed in this utility model.

[0028] Figure 4 This is a partial three-dimensional structural diagram of the sliding seat of a pre-bending device for large-diameter welded pipes with a correction function proposed in this utility model.

[0029] Figure 5 This is a partial sectional view of the three-dimensional structure of the frame of a pre-bending device for large-diameter welded pipes with a correction function proposed in this utility model.

[0030] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the frame and sliding seat of a large-diameter welded pipe pre-bending device with correction function proposed in this utility model.

[0031] Legend:

[0032] 1. Frame; 2. Correction mechanism; 21. Threaded rod; 22. Fixed plate; 23. Sliding plate; 24. Hinge rod; 25. Sliding block; 26. Sliding wheel; 3. Cleaning mechanism; 31. Fixing bolt; 32. Connecting seat; 33. Spring; 34. Sliding seat; 35. Connecting block; 36. Brush head; 4. Conveyor belt; 5. Pre-bending mechanism. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a large-diameter welded pipe pre-bending device with a correction function, comprising a frame 1, which is composed of a bottom support frame and two side support plates. A conveyor belt 4 is provided on the surface of the frame 1. The conveyor belt 4 is existing technology. The function of the conveyor belt 4 is to transport the welded pipe to the cleaning mechanism 3 for cleaning. After cleaning, the welded pipe is transported to the pre-bending mechanism for secondary processing via the conveyor belt 4. A pre-bending mechanism 5 is provided at the upper end of the frame 1. The pre-bending mechanism 5 is existing technology. Its function is to pre-bend the corrected welded pipe. A correction mechanism 2 is provided on the inner side wall of the frame 1.

[0035] Reference Figure 1 and Figure 3 - Figure 4 The correction mechanism 2 includes a threaded rod 21, with a fixed plate 22 rotatably connected to its outer wall. The fixed plate 22 supports and fixes the threaded rod 21. The outer sidewall of the fixed plate 22 is fixedly connected to the inner sidewall of the frame 1. A sliding plate 23 is threadedly connected to the outer wall of the threaded rod 21. Rotating the threaded rod 21 will synchronously drive the sliding plate 23 to move upward or downward. An internal threaded groove is provided at the center of the sliding plate 23. A groove is provided on the sidewall of the frame 1, and a protrusion is provided on the sidewall of the sliding plate 23. The sliding plate 23 is slidably connected in the groove of the frame 1. The groove of the frame 1 can limit the sliding plate 23, so that the sliding plate 23 can only slide up and down on the sidewall of the frame 1. Two sets of hinge rods 24 are hinged to the lower surface of the sliding plate 23. The up-and-down movement of the movable plate 23 will synchronously drive the hinge rods 24 to move closer together or further apart. The ends of the two sets of hinge rods 24 away from the sliding plate 23 are hinged to sliding blocks 25. The movement of the hinge rods 24 will synchronously drive the sliding blocks 25 to move. The two sets of hinge rods 24 are hinged in an inverted V-shape. The upper surface of the frame 1 is provided with a sliding groove. The bottom end of the sliding block 25 is provided with a protrusion. The protrusion of the sliding block 25 is slidably connected in the sliding groove at the top of the frame 1. The sliding groove at the bottom of the frame 1 limits the sliding block 25, so that the sliding block 25 can only move in the slot at the bottom of the frame 1. The side wall of the sliding block 25 is rotatably connected to a sliding wheel 26. The sliding wheel 26 can support the welded pipe and reduce friction during the conveying of the welded pipe. The surface of the frame 1 is provided with a cleaning mechanism 3.

[0036] Reference Figure 1 and Figure 5 - Figure 6The cleaning mechanism 3 includes a fixing bolt 31. A threaded groove is provided on the side wall of the frame 1. The fixing bolt 31 is threaded into the threaded groove on the side wall of the frame 1. The fixing bolt 31 serves to fix the connecting seat 32. The fixing bolt 31 passes through and is threadedly connected to the connecting seat 32. A protrusion is provided on the surface of the connecting seat 32. A sliding groove is provided on the side wall of the frame 1. The connecting seat 32 is slidably connected to the sliding groove on the side wall of the frame 1. The sliding groove on the side wall of the frame 1 limits the positioning of the connecting seat 32, ensuring that the connecting seat 32 can only be positioned and installed within the sliding groove on the side wall of the frame 1, and is positioned and installed by the fixing bolt 31. A sliding seat 34 is fixedly connected to the side wall of the connecting seat 32. A cavity is provided on the inner wall of the sliding seat 34, which guides the movement of the sliding seat 34. The connecting seat 32 is elastically connected to a connecting block 35 via a spring 33. One end of the spring 33 is fixedly connected to the side wall of the connecting seat 32, and the other end of the spring 33 is fixedly connected to the side wall of the connecting block 35. The function of the spring 33 is to... This is used to automatically reset the moved connecting block 35. The connecting block 35 will synchronously drive the brush head 36 to automatically reset. At the same time, when the brush head 36 contacts the large-diameter welded pipe, it can cause the brush head 36 to drive the connecting block 35 to move on the inner wall of the connecting seat 32. Through the elastic action of the spring 33, the brush head 36 is kept in contact with the outer surface of the large-diameter welded pipe. The outer sidewall of the connecting block 35 is slidably connected to the inner sidewall of the sliding seat 34. The outer wall of the connecting block 35 is provided with protrusions for sliding. The side wall of the seat 34 is provided with a groove, and the protrusion of the sliding seat 34 is slidably connected in the groove of the sliding seat 34. The function of the groove is to limit the sliding seat 34 so that the connecting block 35 can only slide in the groove of the sliding seat 34, preventing the brush head 36 from rotating when it comes into contact with the welded pipe. The side wall of the connecting block 35 is fixedly connected to the brush head 36, and the brush head 36 has an inclined surface. When the welded pipe comes into contact with the inclined surface of the brush head 36, it will squeeze the two sets of brush heads 36 into contact with the surface of the welded pipe, which can clean the impurities and dust on the surface.

[0037] Working principle: When using this equipment, the large-diameter welded pipe is transported to the cleaning mechanism 3 via the conveyor belt 4. The bottom plate of the brush head 36 in the cleaning mechanism 3 is provided with an inclined surface. When the welded pipe contacts the inclined surface of the brush head 36, it will squeeze the brush head 36, making the brush head 36 contact the outer wall surface of the welded pipe. The brush head 36 can clean the surface of the welded pipe and remove impurities. After cleaning, the welded pipe enters the correction mechanism 2. During the cleaning process, the brush head 36 will be squeezed, causing the two sets of brush heads 36 to move away from each other. The brush head 36 will simultaneously drive the two sets of connecting blocks 35 to move away from each other. The two sets of connecting blocks 35 moving away from each other will squeeze the side wall spring 33, causing the connecting blocks 35 to retract into the inner wall of the sliding seat 34. At the same time, the connecting blocks 35 will be elastically acted upon by the spring 33, keeping the brush head 36 in contact with the outer surface of the large-diameter welded pipe. After cleaning, the elastic seat of the spring 33 will automatically reset the connecting blocks 35, and the connecting blocks 35 will simultaneously drive the brush head 36 to reset.

[0038] When the cleaning mechanism 3 needs cleaning, simply rotate the fixing bolt 31 to disengage it from the threaded groove on the side wall of the frame 1, thus removing it from the connecting seat 32 and allowing it to be removed entirely for cleaning and maintenance. After cleaning, simply reverse the operation for reinstallation.

[0039] After cleaning, the welded pipe is conveyed to the correction mechanism 2. By manually rotating the threaded rod 21, the threaded rod 21 will drive the sliding plate 23 on the surface to move up and down. The bottom of the sliding plate 23 is provided with a protrusion, and the side wall of the protrusion is also provided with a set of sliding wheels 26. The up and down movement of the sliding plate 23 will synchronously drive the hinge rod 24, which is hinged in an inverted V shape at the bottom, to move closer or further apart. The hinge rod 24 moving closer or further apart will drive the sliding block 25, which is hinged at the bottom, to move closer or further apart. The sliding block 25 will synchronously drive the sliding wheel 26 to move. The distance of the sliding block 25 can be adjusted according to the different diameters of the welded pipe. By adjusting the threaded rod 21, the sliding wheels 26 on the three sides can be made to simultaneously contact the outer side wall of the welded pipe to correct the welded pipe. After correction, the deviation of the welded pipe can be reduced during the pre-bending process. At the same time, the threaded fit between the inner thread groove of the sliding plate 23 and the threaded rod 21 has self-locking properties.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-bending device for large-diameter welded pipes with a correction function, comprising a frame (1), characterized in that: The surface of the frame (1) is provided with a conveyor belt (4), the upper end of the frame (1) is provided with a pre-bending mechanism (5), and the inner sidewall of the frame (1) is provided with a correction mechanism (2). The correction mechanism (2) includes a threaded rod (21), the outer wall of which is rotatably connected to a fixed plate (22), the outer wall of which is threadedly connected to a sliding plate (23), the lower surface of which is hinged to two sets of hinge rods (24), the ends of which are away from the sliding plate (23) are hinged to sliding blocks (25), the side walls of which are rotatably connected to sliding wheels (26), and the surface of the frame (1) is provided with a cleaning mechanism (3).

2. The pre-bending device for large-diameter welded pipes with correction function according to claim 1, characterized in that: The cleaning mechanism (3) includes a fixing bolt (31), which is threaded through and connected to a connecting seat (32). A sliding seat (34) is fixedly connected to the side wall of the connecting seat (32). A connecting block (35) is elastically connected to the inner wall of the connecting seat (32) via a spring (33). A brush head (36) is fixedly connected to the side wall of the connecting block (35).

3. The pre-bending device for large-diameter welded pipes with correction function according to claim 1, characterized in that: The outer sidewall of the fixing plate (22) is fixedly connected to the inner sidewall at the top of the frame (1).

4. The pre-bending device for large-diameter welded pipes with correction function according to claim 1, characterized in that: The surface of the frame (1) is provided with a sliding groove, and the bottom end of the sliding block (25) is provided with a protrusion. The protrusion of the sliding block (25) is slidably connected in the sliding groove on the surface of the frame (1).

5. The pre-bending device for large-diameter welded pipes with correction function according to claim 1, characterized in that: The inner sidewall of the frame (1) is provided with a groove, and the sidewall of the sliding plate (23) is provided with a protrusion. The protrusion of the sliding plate (23) is slidably connected in the groove of the frame (1).

6. The pre-bending device for large-diameter welded pipes with correction function according to claim 2, characterized in that: The surface of the connecting seat (32) is provided with protrusions, and the side wall of the frame (1) is provided with sliding grooves. The protrusions of the connecting seat (32) are slidably connected in the sliding grooves of the side wall of the frame (1).

7. A pre-bending device for large-diameter welded pipes with correction function according to claim 2, characterized in that: The side wall of the frame (1) is provided with a threaded groove, and the fixing bolt (31) is threadedly connected in the threaded groove of the side wall of the frame (1).

8. A pre-bending device for large-diameter welded pipes with correction function according to claim 2, characterized in that: One end of the spring (33) is fixedly connected to the side wall of the connecting seat (32), and the other end of the spring (33) is fixedly connected to the side wall of the connecting block (35). The outer side wall of the connecting block (35) is slidably connected to the inner side wall of the sliding seat (34).

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