Straightening mechanism of a straightening machine for seamless steel pipes

Abstract

The application provides a straightening mechanism of a straightening machine for seamless steel pipes, and relates to the field of steel pipe processing, which comprises a straightening base, two lifting driving elements fixedly connected to the upper surface of the straightening base, a lifting support slidably connected to the upper surface of the straightening base and having output push rods of the two lifting driving elements fixedly connected to the lower surface of the lifting support, and a right support fixedly connected to the right side of the upper surface of the straightening base. The straightening mechanism can apply a pressing force from the inside to the outside of the pipe wall of the seamless steel pipe with concave deformation to achieve the function of steel pipe correction. The straightening mechanism can solve the problem that, for the existing straightening machine, the steel pipe wall is concave when the steel pipe is slightly bent and deformed due to collision, the straightening force cannot be applied from the inside to the outside of the pipe wall concave position when the straightening machine applies pressure to the steel pipe from the outside of the steel pipe, the correction effect of the steel pipe cannot be achieved, and the steel pipe wall is also deformed when the straightening force is too large.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel pipe processing, and particularly relates to a straightening mechanism of a straightening machine for seamless steel pipes. BACKGROUND

[0002] After the production of steel pipes, the steel pipes will inevitably be knocked and bent in the process of storage, maintenance and transportation. When the steel pipes are slightly bent, the straightening machine can be used to straighten the steel pipes. The straightening machine is a device for straightening metal profiles, bars, pipes and wires. The straightening machine extrudes the bars and the like through straightening rollers to change the straightness.

[0003] However, for the existing straightening machine, for the steel pipes slightly bent due to collision, the steel pipe wall is concave. When the pressure is applied to the steel pipe from the outside of the steel pipe by the straightening machine, the straightening force cannot be applied from the inside to the outside of the concave position of the pipe wall, the straightening effect of the steel pipe cannot be achieved, and when the straightening force is too large, the steel pipe wall will also be deformed. SUMMARY

[0004] Therefore, the present application provides a straightening mechanism of a straightening machine for seamless steel pipes to solve the problem that for the existing straightening machine, for the steel pipes slightly bent due to collision, the steel pipe wall is concave. When the pressure is applied to the steel pipe from the outside of the steel pipe by the straightening machine, the straightening force cannot be applied from the inside to the outside of the concave position of the pipe wall, the straightening effect of the steel pipe cannot be achieved, and when the straightening force is too large, the steel pipe wall will also be deformed.

[0005] The present application provides a straightening mechanism of a straightening machine for seamless steel pipes, which specifically comprises a straightening base, two lifting driving elements fixedly connected to the upper surface of the straightening base, a lifting support table slidingly connected above the straightening base and having the output push rods of the two lifting driving elements fixedly connected to the lower surface of the lifting support table, a right support fixedly connected to the right side of the upper surface of the straightening base, a rotating driving shaft rotatably connected to the left side of the upper surface of the lifting support table through a bearing, a rotating driving element fixedly connected to the left end of the lower surface of the lifting support table through a screw, an inner translation support shaft slidingly connected to the right side of the rotating driving shaft, a push pipe driving element fixedly connected to the inside of the right support through a bolt, six side positioning shafts rotatably connected to the right support through bearings, a right support rod fixedly connected to the right edge of the upper surface of the right support, a control panel fixedly connected to the front surface of the right support through a screw, and the control panel is connected to the lifting driving element, the rotating driving element and the push pipe driving element through an electric connection line.

[0006] Further, the upper surface of the straightening base is connected with four upper support plates by welding, the upper support plates are perpendicular to the upper surface of the straightening base, the inner surfaces of the four upper support plates are respectively fixedly connected with one lifting guide rod through screws, and the left side of the upper support plate is welded with an auxiliary rib plate of triangular plate structure in the middle of the surface of the straightening base.

[0007] Further, the front surface and the rear surface of the lifting support table are respectively welded with two lifting sliding blocks, and the lifting sliding blocks are slidingly connected to the lifting guide rods.

[0008] Further, the left end of the rotating drive shaft is fixedly connected with a driven gear, the driven gear is connected with the output shaft of the rotating drive member through gear transmission, the right end of the rotating drive shaft is connected with a driving square rod through welding, and the driving square rod is coaxial with the rotating drive shaft.

[0009] Further, the center of the inner translation support shaft is provided with a translation guide hole in a square hole structure, the translation guide hole is slidingly connected with the driving square rod, and the right end of the inner translation support shaft is provided with a propelling cone head, and the left side of the propelling cone head is provided with a propelling conical surface.

[0010] Further, the propelling cone head is in a conical structure, and a propelling spiral is formed on the outer surface of the propelling cone head.

[0011] Further, the output end of the push tube driving member is fixedly connected with a driving worm, and the left end of the driving worm is rotatably connected to the left wall of the right support through a bearing.

[0012] Further, the lower side of the side positioning shaft is fixedly connected with a driven worm, the upper end of the side positioning shaft is fixedly connected with a tube body positioning push wheel, the driven worm is meshingly connected with the driving worm, the driven worm and the driving worm form a worm and gear transmission, the tube body positioning push wheel is made of rubber material, and a concave ring is formed on the wheel surface of the tube body positioning push wheel.

[0013] Further, the left surface of the right support rod is connected with a hinged end frame through welding, four inner support frames are hinged to the hinged end frame, and the four inner support frames are distributed and arranged around the right support rod axis as the center.

[0014] Further, the inner left end of the inner support frame is provided with a tapered inner expansion support cone, and the inner support frame is provided with an inner propelling groove.

[0015] Beneficial effects

[0016] 1. The straightening mechanism for pipe parts, when the pipe wall is concave and the pipe body is slightly bent and deformed during transportation, maintenance or transfer, the four inner support frames of the straightening device are inserted into the pipe body, the pipe body is installed in a sleeve connection mode outside the four inner support frames, the pipe body is supported from the inside, the straightening effect of the pipe body is achieved, the guiding effect of the pipe body is achieved, the driving tube driving member is rotated, the driving worm drives the three driven worm gears in front and behind to rotate, and then drives the three pipe body positioning push wheels in front and behind to rotate in opposite directions, the six pipe body positioning push wheels are connected with the outer surface of the straightened pipe body by rolling, so that the pipe body is clamped and pushed, the pipe body moves in the pipe body positioning push wheel, and the straightening effect of the pipe body is achieved.

[0017] 2. When the steel pipe with slight concave wall is straightened, the pipe body is installed in a sleeve connection mode on the four inner support frames, the pipe body is supported from the inside by the four inner support frames, the four inner support frames are in a relaxed state in the pipe body, the inner translation support shaft is pushed to the right, the advancing cone head of the inner translation support shaft is inserted into the inner expansion support cone, the rotating driving member is driven to rotate, the rotating driving shaft is driven to rotate by the gear transmission of the rotating driving member and the rotating driving shaft, the square structure driving square rod is rotated, the inner translation support shaft is movably connected to the driving square rod, when the driving square rod rotates, the inner translation support shaft rotates, the advancing screw at the right end of the inner translation support shaft is connected with the inner advancing thread screw, the inner support frame is expanded outwardly from the inside to the outside by the advancing cone head, the inner surface of the straightened pipe body is tightly fitted with the inner support frame, the inner concave structure of the pipe wall is tightly pressed from the inside, so that the straightening effect of the pipe body is achieved, the inner support frame is supported by the advancing cone head, the expansion effect of the inner wall of the pipe body is further improved, the straightening effect of the pipe body is improved, and the seamless steel pipe with inner concave deformation can be straightened from the inside to the outside. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0019] The drawings in the following description only relate to some embodiments of the present application, and are not limited to the present application.

[0020] In the drawings:

[0021] Figure 1 is a structural schematic diagram of the embodiment of the present application.

[0022] Figure 2is a structural schematic diagram of the right side of an embodiment of the present application.

[0023] Figure 3 is a structural schematic diagram of the lifting support of an embodiment of the present application.

[0024] Figure 4 is a structural schematic diagram of the straightening base of an embodiment of the present application.

[0025] Figure 5 is a structural schematic diagram of the right support of an embodiment of the present application.

[0026] Figure 6 is a structural schematic diagram of the right support rod of an embodiment of the present application.

[0027] Figure 7 is a structural schematic diagram of the inner translation support shaft of an embodiment of the present application.

[0028] Figure 8 is a structural schematic diagram of a partial enlargement of A of an embodiment of the present application. Figure 3

[0029] Figure 9 is a structural schematic diagram of a partial enlargement of B of an embodiment of the present application. Figure 3

[0030] Figure 10 is a structural schematic diagram of a partial enlargement of C of an embodiment of the present application. Figure 7

[0031] Figure 11 is a structural schematic diagram of a partial enlargement of D of an embodiment of the present application. Figure 7

[0032] List of Reference Signs

[0033] 1, straightening base; 101, upper support plate; 102, lifting guide rod; 103, auxiliary rib plate; 2, lifting driving member; 3, lifting support; 301, lifting sliding block; 4, right support; 5, rotary driving shaft; 501, driven gear; 502, driving square rod; 6, rotary driving member; 7, inner translation support shaft; 701, translation guide hole; 702, pushing cone head; 7021, pushing screw; 703, pushing cone surface; 8, pushing tube driving member; 801, driving worm; 9, side positioning shaft; 901, driven worm wheel; 902, tube body positioning pushing wheel; 10, right support rod; 1001, hinged end frame; 1002, inner support frame; 1003, inner expansion support cone mouth; 1004, inner pushing thread; 11, control panel. DETAILED DESCRIPTION

[0034] ​​​​In order to make the purpose, scheme and advantages of the technical solutions of the present application more clear, the technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings of specific embodiments of the present application. Unless otherwise specified, the terms used herein have the meanings commonly used in the art. The same reference signs in the drawings represent the same components.

[0035] Embodiment: please refer to Figures 1 to 11 as shown:

[0036] The present application provides a straightening mechanism of a straightening machine for seamless steel pipes, comprising a straightening base 1; the upper surface of the straightening base 1 is fixedly connected with two lifting driving members 2; a lifting support table 3 is slidingly connected above the straightening base 1, and the lower surface of the lifting support table 3 is fixedly connected with the output push rods of the two lifting driving members 2; a right support 4 is fixedly connected to the right side of the upper surface of the straightening base 1; a rotary driving shaft 5 is rotatably connected to the left side of the upper surface of the lifting support table 3 through a bearing; a rotary driving member 6 is fixedly connected to the left end of the lower surface of the lifting support table 3 by a screw; an inner translation support shaft 7 is slidingly connected to the right side of the rotary driving shaft 5; a push tube driving member 8 is fixedly connected inside the right support 4 by a bolt; six side positioning shafts 9 are provided, and the six side positioning shafts 9 are all rotatably connected to the right support 4 by bearings; a right support rod 10 is fixedly connected to the right edge of the upper surface of the right support 4; a control panel 11 is fixedly connected to the front surface of the right support 4 by a screw, and the control panel 11 is connected to the lifting driving members 2, the rotary driving member 6 and the push tube driving member 8 by an electrical connection line.

[0037] Wherein, the upper surface of the straightening base 1 is connected with four upper support plates 101 by welding, the upper support plates 101 are perpendicular to the upper surface of the straightening base 1, the inner surfaces of the four upper support plates 101 are respectively fixedly connected with one lifting guide rod 102 by a screw, the left side of the upper support plate 101 is welded with a triangular plate body structure auxiliary rib plate 103 in the middle of the surface of the straightening base 1, the connection stability between the upper support plate 101 and the upper surface of the straightening base 1 is improved by the auxiliary rib plate 103, and the support stability of the lifting support table 3 is improved; the front surface and the rear surface of the lifting support table 3 are respectively welded with two lifting sliding blocks 301, the lifting sliding blocks 301 are slidingly connected on the lifting guide rods 102; two lifting driving members 2 are arranged between the lower surface of the lifting support table 3 and the upper surface of the straightening base 1, the lifting of the lifting support table 3 is realized by the extension and retraction of the lifting driving members 2, and then the height adjustment of the rotary driving shaft 5 and the inner translation support shaft 7 is realized, a limiting structure is arranged on the upper end of the lifting guide rod 102 to limit the lifting height of the lifting support table 3, so that the upper limit of the lifting of the lifting support table 3 is that the center of the inner translation support shaft 7 is flush with the center of the inner support frame 1002.

[0038] The left end of the rotating driving shaft 5 is fixedly connected with a driven gear 501, the driven gear 501 is connected with the output shaft of the rotating driving part 6 through gear transmission, the right end of the rotating driving shaft 5 is connected with a driving square rod 502 through welding, the driving square rod 502 is coaxial with the rotating driving shaft 5, the center of the inner translation support shaft 7 is provided with a square hole structure translation guide hole 701, the translation guide hole 701 is slidably connected with the driving square rod 502, the right end of the inner translation support shaft 7 is provided with a propelling cone head 702, the left side of the propelling cone head 702 is provided with a propelling conical surface 703, the propelling cone head 702 is a conical structure, and the outer surface of the propelling cone head 702 is provided with a propelling spiral 7021; when the rotating driving part 6 is controlled to rotate through the control panel 11, the rotating driving shaft 5 is driven to rotate through the gear transmission of the rotating driving part 6 and the rotating driving shaft 5, the rotating driving shaft 5 drives the square structure driving square rod 502 to rotate, and the inner translation support shaft 7 is movably connected to the driving square rod 502, so that the inner translation support shaft 7 is driven to rotate when the driving square rod 502 rotates.

[0039] The output end of the pushing pipe driving part 8 is fixedly connected with a driving worm 801, the left end of the driving worm 801 is rotatably connected to the left wall of the right support 4 through a bearing, the lower side of the side positioning shaft 9 is fixedly connected with a driven worm 901, the upper end of the side positioning shaft 9 is fixedly connected with a pipe body positioning push wheel 902, the driven worm 901 is meshingly connected with the driving worm 801, the driven worm 901 and the driving worm 801 form a worm and gear transmission, the pipe body positioning push wheel 902 is made of rubber material, and a concave ring is formed in the wheel surface of the pipe body positioning push wheel 902; when the four inner support frames 1002 of the straightening device are inserted into the pipe body, the pipe body is installed in a sleeving manner outside the four inner support frames 1002, the pipe body is supported from the inside, has a straightening effect on the pipe body, has a guiding effect on the pipe body, the driving worm 801 drives the three driven worms 901 in front and behind to rotate at the same time by rotating the pushing pipe driving part 8, and then drives the three pipe body positioning push wheels 902 in front and behind to rotate in opposite directions, the six pipe body positioning push wheels 902 are rollingly connected with the outer surface of the straightened pipe body, so that the pipe body is clamped and pushed, the pipe body is moved in the pipe body positioning push wheel 902, the straightening effect on the pipe body is realized, the driving worm 801 simultaneously forms a worm and gear transmission with the six driven worms 901, and the rotation speed of the six pipe body positioning push wheels 902 is consistent.

[0040] The left surface of the right supporting rod 10 is connected with a hinged end frame 1001 by welding, the hinged end frame 1001 is hinged with four inner supporting frames 1002, the four inner supporting frames 1002 are distributed around the axis of the right supporting rod 10 as the center; the inner left end of the inner supporting frame 1002 is provided with a tapered inner expanding supporting taper mouth 1003, the inner supporting frame 1002 is provided with an inner advancing thread 1004 inside; when the pipe body is installed on the four inner supporting frames 1002 in a sleeving mode, the pipe body is supported from the inside by the four inner supporting frames 1002, at this time, the four inner supporting frames 1002 are in a relaxed state in the pipe body due to the lack of fixation, the inner translation supporting shaft 7 is pushed to the right, the advancing taper head 702 of the inner translation supporting shaft 7 is inserted into the inner expanding supporting taper mouth 1003, when the inner translation supporting shaft 7 rotates, the advancing screw 7021 at the right end of the inner translation supporting shaft 7 is screw-connected with the inner advancing thread 1004, the inner supporting frame 1002 is expanded outward from the inside to the outside by the advancing taper head 702, the outer surface of the inner supporting frame 1002 is tightly attached to the inner wall of the pipe body to be corrected, the inner wall area of the inner concave structure of the pipe body is tightly pressed from the inside, so that the correction effect of the pipe body is realized.

[0041] The specific use and role of the embodiment are as follows: in the application, first, the two lifting driving members 2 are controlled to retract by the control panel 11, so that the lifting support 3 is lowered, then the deformed steel pipe is sleeved on the four inner support frames 1002 at the left end and inserted into the pipe body positioning push wheel 902, the push pipe driving member 8 is controlled to rotate by the control panel 11, so that the driving worm 801 drives the three driven worms 901 at the front and rear to rotate at the same time, thereby driving the three pipe body positioning push wheels 902 at the front and rear to rotate in opposite directions, the six pipe body positioning push wheels 902 are in rolling connection with the outer surface of the straightened pipe body, so that the pipe body is clamped and pushed, the pipe body is moved in the pipe body positioning push wheel 902, and the straightening effect of the pipe body is realized, the driving worm 801 is in worm and gear transmission with the six driven worms 901 at the same time, so that the rotation speed of the six pipe body positioning push wheels 902 is always the same, thereby ensuring that the pipe body is pushed smoothly, when the steel pipe enters above the right support 4, the two lifting driving members 2 are controlled to lift the lifting support 3 upward, the inner translation support shaft 7 is pushed rightward, so that the push cone head 702 of the inner translation support shaft 7 is inserted into the inner expansion support cone 1003, at this time, the rotation driving member 6 is driven to rotate, the rotation driving shaft 5 is driven to rotate through the gear transmission of the rotation driving member 6 and the rotation driving shaft 5, the square structure of the driving square rod 502 is rotated by the rotation of the rotation driving shaft 5, the inner translation support shaft 7 is movably connected to the driving square rod 502, when the driving square rod 502 rotates, the inner translation support shaft 7 is driven to rotate, the push spiral 7021 at the right end of the inner translation support shaft 7 is in screw connection with the inner push spiral 1004, the inner support frame 1002 is expanded outward from the inside to the outside by the push cone head 702, so that the outer surface of the inner support frame 1002 is tightly attached to the inner wall of the pipe body to be corrected, the inner wall of the pipe body is deformed by the pushing and pressing of the push cone head 702 from left to right, the expansion effect of the inner wall of the pipe body can be further improved, and the correction effect of the pipe body is improved, after the correction is completed, the equipment is reset, the push pipe driving member 8 is reversely driven, and the steel pipe is taken out from the left end of the pipe body positioning push wheel 902.

[0042] Finally, it should be noted that, in the description of the positions of various components and the cooperation relationship therebetween, etc., one component or a pair of components is usually taken as an example, however, those skilled in the art should understand that such positions and cooperation relationship are also applicable to other components or other pairs of components.

[0043] The above description is only exemplary embodiments of the application, and is not intended to limit the protection scope of the application, and the protection scope of the application is determined by the appended claims.

Claims

1. A straightening mechanism of a straightening machine for seamless steel pipes, characterized by comprising: Include: Straightening base (1); the upper surface of the straightening base (1) is fixedly connected with two lifting driving elements (2); lifting support (3), the lifting support (3) is slidingly connected above the straightening base (1), and the lower surface of the lifting support (3) is fixedly connected with the output push rod of two lifting driving elements (2); right support (4), the right support (4) is fixedly connected to the upper surface right side of the straightening base (1); Rotating drive shaft (5), the rotating drive shaft (5) is rotatably connected to the upper surface left side of the lifting support (3) through the bearing; Rotating drive element (6), the rotating drive element (6) is fixedly connected to the lower surface left end of the lifting support (3) by screw; Inner translation support shaft (7), the inner translation support shaft (7) is slidingly connected to the right side of the rotating drive shaft (5); Push tube driving element (8), the push tube driving element (8) is fixedly connected inside the right support (4) by bolt; Side positioning shaft (9), the side positioning shaft (9) is provided with six, six side positioning shafts (9) are rotatably connected on the right support (4) by bearing; Right support rod (10), the right support rod (10) is fixedly connected to the upper surface right edge of the right support (4); Control panel (11), the control panel (11) is fixedly connected to the front surface of the right support (4) by screw, and the control panel (11) is connected with the lifting driving element (2), the rotating drive element (6) and the push tube driving element (8) through the electric connection line; The left end of the rotating drive shaft (5) is fixedly connected with a driven gear (501), the driven gear (501) is connected with the output shaft of the rotating drive element (6) through gear transmission, and the right end of the rotating drive shaft (5) is connected with a driving square rod (502) through welding, the driving square rod (502) is coaxial with the rotating drive shaft (5); The center of the inner translation support shaft (7) is provided with a translation guide hole (701) of square hole structure, the translation guide hole (701) is slidingly connected with the driving square rod (502), and the right end of the inner translation support shaft (7) is provided with a propelling cone head (702), the left side of the propelling cone head (702) is provided with a propelling conical surface (703); The propelling cone head (702) is a conical structure, and a propelling spiral (7021) is formed in the outer surface of the propelling cone head (702); The left surface of the right support rod (10) is connected with a hinged end frame (1001) through welding, four inner support frames (1002) are hinged on the hinged end frame (1001), and the four inner support frames (1002) are distributed around the right support rod (10) axis as the center; The inner side left end of the inner support frame (1002) is provided with a tapered inner expansion support cone (1003), and the inner support frame (1002) is provided with an inner propelling groove (1004).

2. The straightening apparatus according to claim 1, wherein: The upper surface of the straightening base (1) is connected with four upper supporting plates (101) through welding, the upper supporting plates (101) are perpendicular to the upper surface of the straightening base (1), the inner surfaces of the four upper supporting plates (101) are fixedly connected with one lifting guide rod (102) through screws respectively, and the left side of the upper supporting plate (101) is welded with an auxiliary rib plate (103) with a triangular plate body structure in the middle of the surface of the straightening base (1).

3. The straightening apparatus according to claim 2, wherein: The front surface and the rear surface of the lifting support table (3) are welded with two lifting sliding blocks (301) respectively, the lifting sliding blocks (301) are slidingly connected on the lifting guide rods (102).

4. The straightening apparatus according to claim 1, wherein: The output end of the push tube driving part (8) is fixedly connected with a driving worm (801), and the left end of the driving worm (801) is rotatably connected to the left wall of the right supporting seat (4) through a bearing.

5. The straightening apparatus according to claim 4, wherein: The lower side of the side positioning shaft (9) is fixedly connected with a driven worm wheel (901), the upper end of the side positioning shaft (9) is fixedly connected with a pipe body positioning push wheel (902), the driven worm wheel (901) is meshingly connected with the driving worm (801), the driven worm wheel (901) and the driving worm (801) form a worm and gear transmission, the pipe body positioning push wheel (902) is made of rubber, and a concave ring is formed in the wheel surface of the pipe body positioning push wheel (902).

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