Thick-wall steel pipe inner inverted slope opening cutting device and using method

Abstract

The invention discloses a thick-wall steel pipe inner inverted slope opening cutting device and a using method, and belongs to the technical field of shipyard and port crane cutting equipment.The thick-wall steel pipe inner inverted slope opening cutting device comprises a protective cover, a magnetic attraction base is arranged in the protective cover, and a first driving mechanism is arranged at the upper end of the protective cover and comprises a first rack; a first mounting part is arranged at one end of the first rack, a first rotating assembly is arranged on the first mounting part, one end of the first rotating assembly is connected with a second mounting part, a second driving mechanism is arranged at the upper end of the second mounting part and comprises a second rack, and a third mounting part is arranged at one end of the second rack; a second rotating assembly is arranged at the upper end of the third mounting piece, and one end of the second rotating assembly is connected with a cutting gun. The cutting position of the inner inverted slope opening can be accurately controlled, the cutting size is effectively controlled, and the cutting precision and the cutting efficiency are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting equipment for shipyards and port cranes, and in particular relates to a device for cutting an inner bevel of a thick-walled steel pipe and a method for using the device. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Cranes are multi-action lifting machines that can lift and carry heavy objects vertically and horizontally within a certain range. Some lifting equipment has the working characteristic of intermittent movement, that is, the corresponding mechanisms of taking materials, moving, unloading, etc. work alternately in one working cycle. Cranes are increasingly widely used in the market, especially in shipyards and ports.

[0004] As the crane equipment in shipyards and ports becomes larger and larger, the diameter and wall thickness of the steel pipes used are also increasing. When steel pipes with different wall thicknesses are butt-jointed, the steel pipe with the thicker wall thickness needs to have an inverted bevel. In the past, when such requirements were encountered, they were often obtained through manual flame cutting or machining. Either the cutting quality did not meet the requirements, resulting in the two steel pipes not being able to butt together, or there was a certain tilt after butt-jointing, resulting in an unstable connection; or the machining cost was too high, which increased the cost when a large number of inverted bevels needed to be cut. In order to ensure the high precision of the butt-jointing of the two steel pipes, it is necessary to ensure that the cutting position of the inverted bevel is accurate and the slope after cutting is accurate. Although some cutting devices can achieve cutting at present, the cutting accuracy and cutting efficiency are difficult to guarantee, and the cutting size cannot be effectively controlled. Summary of the invention

[0005] In view of the above problems, the present invention provides a thick-walled steel pipe inner bevel cutting device and a use method, which can accurately control the cutting position of the inner bevel, effectively control the cutting size, and improve the cutting accuracy and cutting efficiency.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A device for cutting an inner bevel of a thick-walled steel pipe comprises a protective cover, a magnetic base is arranged inside the protective cover, a first driving mechanism is arranged at the upper end of the protective cover, the first driving mechanism comprises a first rack, a first mounting piece is arranged at one end of the first rack, a first rotating assembly is arranged on the first mounting piece, one end of the first rotating assembly is connected to a second mounting piece, a second driving mechanism is arranged at the upper end of the second mounting piece, the second driving mechanism comprises a second rack, a third mounting piece is arranged at one end of the second rack, a second rotating assembly is arranged at the upper end of the third mounting piece, and one end of the second rotating assembly is connected to a cutting gun.

[0008] Furthermore, the magnetic base is located inside the protective cover, and wires and pipelines are arranged inside the protective cover; the lower surface of the magnetic base is adsorbed on the outer wall of the steel pipe.

[0009] Furthermore, a baffle is provided at the lower end of the protective cover, and the side of the baffle is in close contact with the side of the thick-walled steel pipe; a square hole is provided at the lower end of the baffle.

[0010] Furthermore, a plurality of fixing bolts are arranged at intervals on the side of the protective cover, and the fixing bolts connect the protective cover and the magnetic base.

[0011] Furthermore, the first driving mechanism also includes a first rotating disk, one end of the first rotating disk is connected to one end of the first knob, and the other end of the first rotating disk is connected to the first gear.

[0012] Furthermore, a first rack is disposed at the lower end of the first gear, and the first rack is meshed with the first gear.

[0013] Furthermore, the second driving mechanism also includes a second rotating disk, one end of the second rotating disk is connected to one end of the second knob, and the other end of the second rotating disk is connected to the second gear.

[0014] Furthermore, a second rack is disposed at the lower end of the second gear, and the second rack is meshed with the second gear.

[0015] Furthermore, the first mounting member is connected to the first rack by bolts, and the third mounting member is connected to the second rack by bolts.

[0016] A method for using a thick-walled steel pipe inner bevel cutting device, the steps of which are:

[0017] The magnetic base is adsorbed on the outer wall of the steel pipe, the first knob drives the first rotating disk to rotate, the first rotating disk drives the first gear to rotate, and then the first rack moves in the X-axis direction, and then the cutting gun moves in the X-axis direction;

[0018] Then the second knob drives the second rotating disk to rotate, and the second rotating disk drives the second gear to rotate, so that the second rack moves in the Y-axis direction, and then the cutting gun moves in the Y-axis direction;

[0019] Then the first rotating assembly rotates to drive the second mounting part to rotate on the YZ plane, and then drives the cutting gun to rotate on the YZ plane; the second rotating assembly drives the cutting gun to rotate on the XY plane, and finally realizes the precise adjustment of the cutting gun position. After the adjustment is completed, the inner bevel cutting is performed.

[0020] Compared with the prior art, the present invention has the following advantages and positive effects:

[0021] The present invention adsorbs the cutting device on the outer wall of the thick-walled steel pipe through the magnetic suction base of the cutting device, and the first knob drives the first rotating disk to rotate, and the first rotating disk drives the first gear to rotate, thereby moving the first rack in the X-axis direction, thereby moving the cutting gun in the X-axis direction; then the second knob drives the second rotating disk to rotate, and the second rotating disk drives the second gear to rotate, thereby moving the second rack in the Y-axis direction, thereby moving the cutting gun in the Y-axis direction; then the first rotating assembly rotates to drive the second mounting part to rotate on the YZ plane, thereby driving the cutting gun to rotate on the YZ plane; the second rotating assembly drives the cutting gun to rotate on the XY plane; through the cooperation of the first driving mechanism, the second driving mechanism, the first rotating assembly and the second rotating assembly, it is realized to cut the outer bevel and inner bevel of any angle within the flame cutting capacity range and effectively control the cutting size, which is more accurate and more beautiful than manual flame cutting, and more efficient and less costly than machining. The cutting equipment can be reused, and the quality control and economic benefits are good.

[0022] The present invention is provided with a protective cover, which surrounds the periphery of the magnetic trolley and is fastened by bolts on the side, leaving a cutting opening on one side of the flame cutter, so that the flame splashes and slags during cutting will not fall on the parts of the cutting device, thereby preventing the internal electronic components and air pipes from being burned. The present invention is provided with a baffle, and the side of the baffle abuts against the side of the thick-walled steel pipe, thereby ensuring the stability of the cutting device walking on the thick-walled steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1 It is a bottom view of the device for cutting the inner bevel of a thick-walled steel pipe according to the present invention;

[0025] Figure 2 It is a front view of the device for cutting the inner bevel of a thick-walled steel pipe according to the present invention;

[0026] Figure 3 yes Figure 2 A-direction diagram in FIG.

[0027] In the figure: 1. magnetic base; 2. fixing bolt; 3. protective cover; 4. first rotating disk; 5. first gear; 6. first rack; 7. first mounting member; 8. first rotating assembly; 9. second mounting member; 10. second rack; 11. second rotating disk; 12. second gear; 13. third mounting member; 14. second rotating assembly; 15. cutting gun; 16. baffle; 17. thick-walled steel pipe; 18. outer wall of steel pipe; 19. inner wall of steel pipe; 20. inner bevel; 21. first knob; 22. second knob. DETAILED DESCRIPTION

[0028] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0029] Embodiment 1:

[0030] The present invention is described in detail below with reference to the accompanying drawings. The present embodiment discloses a device for cutting the inner bevel of a thick-walled steel pipe. Figure 2 As shown, it includes a protective cover 3, a magnetic base 1 is arranged inside the protective cover 3, a first driving mechanism is arranged on the upper end of the protective cover 3, the first driving mechanism includes a first rack 6, a first mounting member 7 is arranged at one end of the first rack 6, a first rotating assembly 8 is arranged on the first mounting member 7, one end of the first rotating assembly 8 is connected to the second mounting member 9, a second driving mechanism is arranged on the upper end of the second mounting member 9, the second driving mechanism includes a second rack 10, a third mounting member 13 is arranged at one end of the second rack 10, a second rotating assembly 14 is arranged at the upper end of the third mounting member 13, and one end of the second rotating assembly 14 is connected to the cutting gun 15.

[0031] like Figure 1 As shown, the magnetic base 1 is located inside the protective cover 3, and wires and pipelines are arranged inside the protective cover 3; the lower surface of the magnetic base 1 is adsorbed on the outer wall 18 of the steel pipe. The protective cover 3 protects the magnetic base 1, and the flame splashes and slag during cutting will not fall on the parts of the cutting device, preventing burns to the internal electronic components, wires and air pipes. A wheel can be arranged at the lower end of the magnetic base 1, and the wheel is connected by rotation. A drive motor is arranged on the shaft. The drive motor starts to drive the shaft to rotate, and then drives the wheel to rotate, so that the cutting device can move on the outer wall of the thick-walled steel pipe 17.

[0032] Several fixing bolts 2 are arranged at intervals on the side of the protective cover 3, and the fixing bolts 2 connect the protective cover 3 and the magnetic base 1. A baffle 16 is arranged at the lower end of the protective cover 3, and the side of the baffle 16 is in close contact with the side of the thick-walled steel pipe 17; a square hole is arranged at the lower end of the baffle 16. The side of the baffle 16 abuts against the side of the thick-walled steel pipe 17, ensuring the stability of the cutting device walking on the thick-walled steel pipe 17. When cutting, the cutting gun 15 is started, and the flame cuts the inner wall surface 19 of the thick-walled steel pipe 17 through the square hole, that is, the setting of the baffle 16 will not affect the cutting.

[0033] like Figure 2As shown, the first driving mechanism further includes a first rotating disk 4, one end of which is connected to the first knob 21, and the other end of which is connected to the first gear 5. A first rack 6 is disposed at the lower end of the first gear 5, and the first rack 6 is meshed with the first gear 5. Figure 3 As shown, the second driving mechanism also includes a second rotating disk 11, one end of the second rotating disk 11 is connected to the second knob 22, and the other end of the second rotating disk 11 is connected to the second gear 12. A second rack 10 is arranged at the lower end of the second gear 12, and the second rack 10 is meshed with the second gear 12. The first mounting member 7 is connected to the first rack 6 by bolts, and the third mounting member 13 is connected to the second rack 10 by bolts. The first knob 21 drives the first rotating disk 4 to rotate, and the first rotating disk 4 drives the first gear 5 to rotate, thereby causing the first rack 6 to move in the X-axis direction, thereby causing the cutting gun 15 to move in the X-axis direction; then the second knob 22 drives the second rotating disk 11 to rotate, and the second rotating disk 11 drives the second gear 12 to rotate, thereby causing the second rack 10 to move in the Y-axis direction, thereby causing the cutting gun 15 to move in the Y-axis direction. The first driving mechanism and the second driving mechanism cooperate to realize the movement of the cutting gun 15 in the X-axis direction and the Y-axis direction, thereby realizing the precise adjustment of the cutting position;

[0034] The first knob 21 and the second knob 22 are manual knobs, and the first knob 21 and the second knob 22 can be connected to a power component, such as a motor drive, by manual rotation.

[0035] The third mounting member 13 is a cylindrical structure with a smooth outer surface, and is fixed to the second rack 10 by screws. The second rotating assembly 14 at the right end of the cutting gun 15 is a round tube structure with a smooth inner surface. The left end of the third mounting member 13 is installed in the right end hole of the cutting gun 15, and then fastened by a butterfly screw to prevent the third mounting member 13 from rotating. If the third mounting member 13 needs to rotate, loosen the butterfly screw and rotate it to the required angle.

[0036] The cutting gun 15 is a flame cutting gun. The flame cutting gun passes through the second rotating assembly 14. A clamp is set at the upper end of the second rotating assembly 14. The flame cutting gun is in the clamp and swings in the vertical plane through the second rotating assembly 14 to achieve the angle of the flame cutting knife cutting the inner inverted angle, that is, the swing of the XY plane. The first rotating assembly 8 rotates to drive the second mounting part 9 to rotate on the YZ plane, and then drives the cutting gun 15 to rotate on the YZ plane; the second rotating assembly 14 drives the cutting gun 15 to rotate on the XY plane. The flame spraying position and inclination of the cutting gun 15 can be adjusted arbitrarily, and then the cutting size and slope can be adjusted arbitrarily, the cutting size can be effectively controlled, and the position adjustment efficiency is high, thereby improving the cutting accuracy and cutting efficiency.

[0037] Embodiment 2:

[0038] The method for using the thick-walled steel pipe inner bevel cutting device as described in Example 1 comprises the following steps:

[0039] The magnetic base 1 is adsorbed on the outer wall surface 18 of the steel pipe, the first knob 21 drives the first rotating disk 4 to rotate, the first rotating disk 4 drives the first gear 5 to rotate, and then the first rack 6 moves in the X-axis direction, and then the cutting gun 15 moves in the X-axis direction;

[0040] Then the second knob 22 is started to drive the second rotating disk 11 to rotate, and the second rotating disk 11 drives the second gear 12 to rotate, so that the second rack 10 moves in the Y-axis direction, and then the cutting gun 15 moves in the Y-axis direction; through the cooperation of the knobs, gears and racks of the first driving mechanism and the second driving mechanism, the position adjustment in the X-axis and Y-axis directions is realized, and a guide rail is set on the side where the teeth of the first rack 6 and the second rack 10 are opposite to each other, to provide guidance when the first rack 6 and the second rack 10 move, thereby ensuring the stability of the moving process.

[0041] Then the first rotating assembly 8 rotates to drive the second mounting member 9 to rotate on the YZ plane, thereby driving the cutting gun 15 to rotate on the YZ plane; the second rotating assembly 14 drives the cutting gun 15 to rotate on the XY plane, and the first rotating assembly 8 and the second rotating assembly 14 cooperate to arbitrarily adjust the flame spraying position and inclination of the cutting gun 15, thereby arbitrarily adjusting the cutting size and slope, making the cutting position adjustment of the cutting gun 15 more flexible; finally, the first driving mechanism, the second driving mechanism, the first rotating assembly 8 and the second rotating assembly 14 cooperate to achieve precise adjustment of the position of the cutting gun 15, and after the adjustment is completed, the inner bevel 20 is cut, and after the cutting is completed, the position of the spray gun can be adjusted again through the cooperation of the driving mechanism and the rotating assembly to cut the next position.

[0042] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A device for cutting the inner bevel of a thick-walled steel pipe, characterized in that: It includes a protective cover, a magnetic base is arranged inside the protective cover, a first driving mechanism is arranged on the upper end of the protective cover, the first driving mechanism includes a first rack, a first mounting member is arranged at one end of the first rack, a first rotating assembly is arranged on the first mounting member, one end of the first rotating assembly is connected to a second mounting member, a second driving mechanism is arranged on the upper end of the second mounting member, the second driving mechanism includes a second rack, a third mounting member is arranged at one end of the second rack, a second rotating assembly is arranged at the upper end of the third mounting member, and one end of the second rotating assembly is connected to the cutting gun.

2. A thick-walled steel pipe inner bevel cutting device as claimed in claim 1, characterized in that: The magnetic base is located inside the protective cover, and wires and pipelines are arranged inside the protective cover; the lower surface of the magnetic base is adsorbed on the outer wall of the steel pipe.

3. A thick-walled steel pipe inner bevel cutting device as claimed in claim 1, characterized in that: A baffle is arranged at the lower end of the protective cover, and the side of the baffle is in close contact with the side of the thick-walled steel pipe; a square hole is arranged at the lower end of the baffle.

4. A thick-walled steel pipe inner bevel cutting device as claimed in claim 1, characterized in that: A plurality of fixing bolts are arranged at intervals on the side of the protective cover, and the fixing bolts connect the protective cover and the magnetic base.

5. A thick-walled steel pipe inner bevel cutting device as claimed in claim 1, characterized in that: The first driving mechanism further includes a first rotating disk, one end of the first rotating disk is connected to one end of the first knob, and the other end of the first rotating disk is connected to the first gear.

6. A device for cutting inner bevel of thick-walled steel pipe as claimed in claim 5, characterized in that: A first rack is disposed at the lower end of the first gear, and the first rack is meshed with the first gear.

7. A device for cutting inner bevel of thick-walled steel pipe according to claim 1, characterized in that: The second driving mechanism further includes a second rotating disk, one end of the second rotating disk is connected to one end of the second knob, and the other end of the second rotating disk is connected to the second gear.

8. A device for cutting inner bevel of thick-walled steel pipe as claimed in claim 7, characterized in that: A second rack is disposed at the lower end of the second gear, and the second rack is meshed with the second gear.

9. A device for cutting inner bevel of thick-walled steel pipe as claimed in claim 1, characterized in that: The first mounting member is connected to the first rack by bolts, and the third mounting member is connected to the second rack by bolts.

10. A method for using a thick-walled steel pipe inner bevel cutting device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: The magnetic base is adsorbed on the outer wall of the steel pipe, the first knob drives the first rotating disk to rotate, the first rotating disk drives the first gear to rotate, and then the first rack moves in the X-axis direction, and then the cutting gun moves in the X-axis direction; Then the second knob drives the second rotating disk to rotate, and the second rotating disk drives the second gear to rotate, so that the second rack moves in the Y-axis direction, and then the cutting gun moves in the Y-axis direction; Then the first rotating assembly rotates to drive the second mounting part to rotate on the YZ plane, and then drives the cutting gun to rotate on the YZ plane; the second rotating assembly drives the cutting gun to rotate on the XY plane, and finally realizes the precise adjustment of the cutting gun position. After the adjustment is completed, the inner bevel cutting is performed.

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