Adjustable inner supporting type circular pipe cutting device and cutting method

Abstract

The invention belongs to the technical field of cutting, and particularly relates to an adjustable inner supporting type circular pipe cutting device and a cutting method.The adjustable inner supporting type circular pipe cutting device comprises a pipeline, and a pipeline tensioning mechanism, a pipeline walking mechanism, a cutting driving adjusting mechanism and a cutting telescopic adjusting mechanism are arranged in the pipeline; the pipeline tensioning mechanism realizes the tensioning walking action of the pipeline walking mechanism; the pipeline walking mechanism achieves the action that the cutting drive adjusting mechanism and the cutting telescopic adjusting mechanism walk in the pipeline. According to the adjustable inner supporting type circular pipe cutting device and method, the spherical space design of the cutting drive adjusting mechanism and the introduction of the electric telescopic adjusting mechanism enable the device to easily adapt to pipeline sections of different shapes, accurate adjustment of the cutting position is achieved, and the cutting quality is improved. In addition, high-precision and smooth cutting edges are provided by using the laser cutting head, and high quality of products is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of large-scale pipe cutting, and in particular to an adjustable inner-support type round pipe cutting device and a cutting method. Background Art

[0002] In the existing pipeline processing industry, the cutting operation of large pipelines has always been a technical problem. Traditional pipeline cutting methods often rely on external cutting equipment, but this method has limitations when processing large pipelines, especially when the pipeline diameter is large or the site conditions are limited, the external cutting operation becomes extremely difficult or even impossible to implement. Therefore, the industry generally adopts internal cutting technology to solve this problem.

[0003] However, traditional internal cutting technology is mainly used for pipes with circular cross-sections. When it is necessary to cut an elliptical cross-section when two pipes are butt-jointed, the existing technology is inadequate. Internal cutting of elliptical cross-sections is not only cumbersome, but also greatly increases the difficulty of cutting due to the irregularity of the cutting path, and it is difficult to ensure the cutting quality and efficiency. In addition, existing internal cutting devices often lack flexibility and adaptability, and cannot effectively cut pipes of different diameters and shapes, resulting in many limitations in practical applications.

[0004] Therefore, a kind of adjustable inner support type round tube cutting device and cutting method are needed. Summary of the invention

[0005] Based on the existing technical problems, the present invention proposes an adjustable internal support type round tube cutting device and a cutting method.

[0006] The invention provides an adjustable internally supported round pipe cutting device, comprising a pipe, wherein a pipe tensioning mechanism, a pipe running mechanism, a cutting drive adjusting mechanism and a cutting telescopic adjusting mechanism are respectively arranged inside the pipe.

[0007] The pipeline tensioning mechanism realizes the action of tensioning and moving of the pipeline traveling mechanism.

[0008] The pipeline walking mechanism realizes the movement of the cutting drive adjustment mechanism and the cutting telescopic adjustment mechanism walking inside the pipeline.

[0009] When the cutting drive adjustment mechanism implements the pipe cutting operation, the adjustment action can be switched according to the circular cross section or the elliptical cross section.

[0010] The cutting telescopic adjustment mechanism realizes the telescopic adjustment action when cutting a circular cross section or an elliptical cross section.

[0011] Preferably, the pipe tensioning mechanism includes a fixing ring, each three fixing rings form a group, and two groups of fixing rings are arranged front and back in the axial direction of the pipe. The arc surface of each group of fixing rings is also equipped with an arc shield in a circular array. Each group of fixing rings is also rotatably connected with an adjusting shaft through a bearing, and the arc surfaces at both ends of the adjusting shaft are respectively provided with a left-handed thread and a right-handed thread.

[0012] Preferably, the three adjusting shafts are equally divided and arranged in a ring shape on the surface of the fixing ring, and an articulated seat is fixedly installed on the arc surface of the fixing ring at both ends of each group, and the three articulated seats are distributed in a ring array, and the surface of the articulated seat is rotatably connected to the first connecting rod through a pin shaft, and the surface of the left-handed thread and the surface of the right-handed thread are respectively threadedly connected to the left movable tube and the right movable tube, and the top of the left movable tube and the top of the right movable tube are both fixedly installed with an adjusting seat, and the surface of the adjusting seat is rotatably connected to the second connecting rod through a pin shaft, and one end of each of the second connecting rods is rotatably connected to the surface of one of the first connecting rods through a pin shaft.

[0013] Preferably, one end of the adjusting shaft passes through and extends to one end of the fixing ring, and a sprocket is fixedly mounted on one end of the adjusting shaft, and the three sprockets are distributed in a ring array on the surface of the fixing ring, and the inner walls of the grooves of the three sprockets are transmission-connected with chains, and a motor base plate is also fixedly mounted on one side of the fixing ring, and a driving motor is fixedly mounted on the surface of the motor base plate, and the output end of the driving motor is fixedly mounted on the corresponding end of the adjusting shaft through a coupling.

[0014] Preferably, the pipeline walking mechanism includes a walking wheel, one end of the first connecting rod is rotatably connected to a roller through a bearing, one end of the roller is fixedly mounted on the surface of the walking wheel, and the arc surfaces of multiple walking wheels are slidably plugged into the inner wall of the pipeline. A walking motor is also fixedly mounted on the side of one of the first connecting rods, and the output end of the walking motor is fixedly connected to the surface relative to the roller through a coupling.

[0015] Preferably, the cutting drive adjustment mechanism includes an arc-shaped mounting plate, the relative space between the two arc-shaped mounting plates forms a sphere, the top and bottom of the arc-shaped mounting plate are fixedly mounted to the inner wall of the arc-shaped shielding plate, and the surface of the arc-shaped mounting plate is respectively fixedly mounted with an arc-shaped rack and an arc-shaped slide rail, and the arc-shaped rack and the arc-shaped slide rail are respectively located on both sides of the arc-shaped inner wall of the arc-shaped mounting plate.

[0016] Preferably, an arc-shaped slide rail is slidably inserted with an arc-shaped slider, a fixed plate is fixedly installed on the surface of one of the arc-shaped sliders, and a U-shaped connecting plate is fixedly installed on the surface of the other arc-shaped slider, a U-shaped mounting plate is fixedly installed on one side of the U-shaped connecting plate, one side of the U-shaped mounting plate and the opposite surface of the fixed plate are rotatably connected with a rotating shaft through bearings, a rotating motor is also fixedly installed on the surface of the U-shaped connecting plate, the output end of the rotating motor is fixedly installed on the opposite end of the rotating shaft, and the rotating motor is located inside the U-shaped mounting plate.

[0017] Preferably, a clamping seat is fixedly installed on the surface of the arc-shaped slider, and a swing motor is fixedly installed on the surface of the clamping seat. A gear shaft is fixedly installed on the output end of the swing motor through a coupling, and a driving gear is fixedly installed on one end of the gear shaft. The teeth of the driving gear are meshed with the tooth grooves of the arc-shaped rack, and the swing motor is located inside the U-shaped connecting plate.

[0018] Preferably, the cutting telescopic adjustment mechanism includes a sliding seat, the arc surface of the rotating shaft is clamped with a key bar through a key groove, the surface of the key bar and the surface of the rotating shaft are both slidably plugged into the inner wall of the sliding seat, and a mounting ring is also fixedly installed on the arc surface of one end of the rotating shaft, and a first electric telescopic rod is fixedly installed on the surface of the mounting ring, and the telescopic end of the first electric telescopic rod is fixedly installed on the surface of the sliding seat.

[0019] A second electric telescopic rod is fixedly mounted on the surface of the sliding seat, a cutting plate is fixedly mounted on the telescopic bottom end of the second electric telescopic rod, a laser cutting head is mounted on the surface of the cutting plate, and both the first electric telescopic rod and the second electric telescopic rod are electrically connected via a conductive slip ring.

[0020] The present invention proposes a cutting method for an adjustable internally supported round pipe cutting device. Step 1: When cutting a large pipe, the pipe walking mechanism is first controlled to drive the pipe tensioning mechanism, the cutting drive adjustment mechanism and the cutting telescopic adjustment mechanism to enter the interior of the large pipe. During walking, the roller is driven to rotate by the walking motor, so that the walking wheel of the large pipe rotates, so that it walks inside the large pipe to the cutting position and stops.

[0021] Step 2: Then control the tightening work of the pipeline tensioning mechanism, use the driving motor to rotate and control the rotation of the adjusting shaft, and synchronously drive the left movable tube and the right movable tube at both ends of the adjusting shaft to move toward or repel each other through the left-handed thread and the right-handed thread arranged on the surface, drive the first connecting rod and the second connecting rod to swing, and then control multiple walking wheels to be in extrusion contact with the inner wall of the large pipeline, and cooperate with the pipeline walking mechanism to drive walking adjustment.

[0022] Step 3. When cutting, make settings and adjustments according to the cross-sectional state that needs to be cut. When cutting a circle, the gear shaft is driven to rotate by the swing motor, thereby controlling the driving gear to move on the surface of the arc-shaped rack, and then controlling the axis of the rotating shaft and the axis of the large pipe to be located at the same axis, and then controlling the cutting direction of the laser cutting head to be set vertically to the large pipe, and then driving the laser cutting head to rotate and cut under the rotation of the rotating motor, so that the cutting section is circular.

[0023] Step 4. When it is necessary to cut an elliptical section, the swing motor works in cooperation with the sliding of the arc slide rail and the arc slider to drive the rotating shaft to swing in the spherical space of the two arc mounting plates, thereby adjusting the cutting direction of the laser cutting head and the angle between the axis of the large pipe. During cutting, the rotating shaft rotates, driving the laser cutting head to rotate with the axis of the rotating shaft as the center of the circle, thereby realizing the operation of cutting an elliptical section of a large pipe.

[0024] Step 5. During cutting, when the laser cutting head contacts the inner wall of a large pipe, the first electric telescopic rod is extended to adjust the cutting position. When cutting an elliptical cross-section, the second electric telescopic rod is extended to adjust the position of the sliding seat to assist the laser cutting head in cutting the elliptical path rotation position.

[0025] The beneficial effects of the present invention are:

[0026] This adjustable internal support type round pipe cutting device achieves the purpose of efficient and accurate cutting inside large pipes through its innovative design, especially for the cutting needs of circular and elliptical cross-sections. The device achieves the following beneficial effects through the coordinated work of the pipe tensioning mechanism, pipe running mechanism, cutting drive adjustment mechanism and cutting telescopic adjustment mechanism:

[0027] First, the tensioning mechanism of the device can be adjusted in both directions according to the inner diameter of the pipe, ensuring uniform tensioning of the inner wall of the pipe during cutting, avoiding pipe deformation caused by uneven tensioning, and improving cutting accuracy. Second, the automated design of the pipe travel mechanism enables the cutting device to move precisely inside the pipe, greatly improving cutting efficiency and reducing manual operation errors.

[0028] The spherical space design of the cutting drive adjustment mechanism and the introduction of the electric telescopic adjustment mechanism enable the device to easily adapt to pipe sections of different shapes, achieve precise adjustment of the cutting position, and improve the cutting quality. In addition, the use of the laser cutting head provides high precision and smooth cutting edges, ensuring the high quality of the product.

[0029] The design of the device also takes into account the safety of operation and the ease of maintenance of the equipment. Through the application of electric telescopic rods and conductive slip rings, the cutting device can achieve rapid response and continuous power supply, reducing operational risks and maintenance costs.

[0030] In summary, this device not only improves the efficiency and accuracy of pipe cutting, but also enhances the versatility and applicability of the equipment, providing a stable, reliable and efficient solution for the cutting of large pipes, especially in situations where elliptical cross-section cutting is required, showing its unique advantages and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an adjustable internal support type round tube cutting device and a cutting method;

[0032] Figure 2 A three-dimensional diagram of an arc-shaped shield structure of an adjustable internal support type round tube cutting device and a cutting method;

[0033] Figure 3 A three-dimensional diagram of the structure of an arc-shaped mounting plate of an adjustable internally supported round tube cutting device and a cutting method;

[0034] Figure 4 A three-dimensional diagram of a pipeline walking mechanism of an adjustable internal support type round pipe cutting device and a cutting method;

[0035] Figure 5 A three-dimensional diagram of a cutting drive adjustment mechanism of an adjustable internal support type round tube cutting device and a cutting method;

[0036] Figure 6 It is a three-dimensional diagram of a cutting telescopic adjustment mechanism of an adjustable internal support type round tube cutting device and a cutting method;

[0037] Figure 7 The invention discloses an elliptical cross-sectional view of a pipe structure of an adjustable internally supported round pipe cutting device and a cutting method.

[0038] In the figure: 1, pipeline; 2, pipeline tensioning mechanism; 21, fixing ring; 22, arc shield; 23, adjustment shaft; 24, hinge seat; 25, first connecting rod; 26, left movable tube; 27, right movable tube; 28, adjustment seat; 29, second connecting rod; 210, sprocket; 211, chain; 212, motor bottom plate; 213, driving motor; 3, pipeline walking mechanism; 31, walking wheel; 32, roller; 33, walking motor; 4, cutting drive adjustment mechanism; 41, arc mounting plate; 42. Arc rack; 43. Arc slide rail; 44. Arc slider; 45. Fixed plate; 46. U-shaped connecting plate; 47. U-shaped mounting plate; 48. Rotating shaft; 49. Rotating motor; 410. Clamping seat; 411. Swinging motor; 412. Gear shaft; 413. Driving gear; 5. Cutting telescopic adjustment mechanism; 51. Sliding seat; 52. Key bar; 53. Mounting ring; 54. First electric telescopic rod; 55. Second electric telescopic rod; 56. Cutting plate; 57. Laser cutting head. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Reference Figure 1-Figure 7 An adjustable internally supported round pipe cutting device comprises a pipe 1, wherein the pipe 1 is provided with a pipe tensioning mechanism 2, a pipe running mechanism 3, a cutting driving adjustment mechanism 4 and a cutting telescopic adjustment mechanism 5.

[0041] The pipeline tensioning mechanism 2 realizes the action of tensioning and moving the pipeline traveling mechanism 3; the pipeline tensioning mechanism 2 includes a fixed ring 21, and each three fixed rings 21 form a group. Two groups of fixed rings 21 are arranged front and back in the axial direction of the pipeline 1. The arc surface of each group of fixed rings 21 is also equipped with an arc shield 22 in a circular array. An adjusting shaft 23 is rotatably connected between each group of fixed rings 21 through a bearing. The arc surfaces at both ends of the adjusting shaft 23 are respectively provided with left-handed threads and right-handed threads.

[0042] Specifically implemented in this way, the design of left-handed and right-handed threads allows the adjusting shaft 23 to be adjusted in both directions, thereby achieving precise adjustment of the inner diameter of the pipe 1, adapting to pipes 1 of different diameters, and improving the versatility of the device; by rotating the adjusting shaft 23, the operator can easily tighten and loosen the pipe 1.

[0043] The three adjustment shafts 23 are arranged in a circular shape and are equally divided on the surface of the fixed ring 21. A hinge seat 24 is also fixedly installed on the arc surface of the fixed ring 21 at both ends of each group. The three hinge seats 24 are distributed in a circular array. The surface of the hinge seat 24 is rotatably connected to the first connecting rod 25 through a pin shaft. The surface of the left-handed thread and the surface of the right-handed thread are respectively threadedly connected to the left movable tube 26 and the right movable tube 27. The top of the left movable tube 26 and the top of the right movable tube 27 are both fixedly installed with an adjustment seat 28. The surface of the adjustment seat 28 is rotatably connected to the second connecting rod 29 through a pin shaft. One end of each second connecting rod 29 is rotatably connected to the surface of a first connecting rod 25 through a pin shaft.

[0044] Specifically implemented in this way, through the pin connection of the first connecting rod 25 and the second connecting rod 29, the adjusting force can be accurately transmitted to the fixing ring 21, ensuring the uniform distribution of the tensioning force on the inner wall of the pipe 1 and improving the cutting accuracy; the three adjusting shafts 23 and the corresponding connecting rod system can work synchronously to achieve a uniform tensioning effect, avoiding deformation of the pipe 1 due to uneven tensioning and ensuring the cutting quality; by moving the left movable tube 26 and the right movable tube 27, the tightening and loosening of the pipe 1 can be easily achieved.

[0045] One end of the adjusting shaft 23 passes through and extends to one end of the fixing ring 21, and a sprocket 210 is fixedly installed at one end of the adjusting shaft 23. The three sprockets 210 are distributed in a circular array on the surface of the fixing ring 21. The inner walls of the grooves of the three sprockets 210 are transmission-connected with chains 211. A motor base plate 212 is also fixedly installed on one side of the fixing ring 21. A driving motor 213 is fixedly installed on the surface of the motor base plate 212. The output end of the driving motor 213 is fixedly installed with one end of the corresponding adjusting shaft 23 through a coupling.

[0046] Specifically implemented in this way, through the transmission connection of the chain 211 and the sprocket 210, the three adjustment shafts 23 can be ensured to rotate synchronously, thereby achieving uniform tensioning of the inner wall of the pipe 1, improving cutting accuracy, and avoiding deformation of the pipe 1 due to uneven tensioning; the automated tensioning process reduces the possibility of human operating errors, improves operational safety, and reduces the risk of accidents; through the drive motor 213 and the chain 211 system, the automation and precise control of the tensioning of the inner wall of the pipe 1 is achieved, which not only improves cutting efficiency and accuracy, but also enhances the safety and maintainability of the equipment, providing a stable and reliable solution for pipe 1 cutting.

[0047] The pipeline walking mechanism 3 realizes the movement of the cutting drive adjustment mechanism 4 and the cutting telescopic adjustment mechanism 5 walking inside the pipeline 1; the pipeline walking mechanism 3 includes a walking wheel 31, one end of the first connecting rod 25 is rotatably connected to a roller 32 through a bearing, one end of the roller 32 is fixedly installed on the surface of the walking wheel 31, and the arc surfaces of multiple walking wheels 31 are all slidably plugged with the inner wall of the pipeline 1. A walking motor 33 is also fixedly installed on the side of one of the first connecting rods 25, and the output end of the walking motor 33 is fixedly connected to the surface of the roller 32 relative to the coupling.

[0048] Specifically implemented in this way, the use of the travel motor 33 and the coupling provides precise travel control; ensures that the cutting mechanism moves accurately inside the pipe 1, thereby improving cutting accuracy; the use of the travel motor 33 realizes the automated travel of the cutting mechanism, reduces manual operation, and improves production efficiency; by adjusting the speed and direction of the travel motor 33, it can adapt to pipes 1 of different diameters and lengths, thereby enhancing the versatility of the equipment and being suitable for a variety of pipe 1 cutting tasks.

[0049] When the cutting drive adjustment mechanism 4 implements the cutting operation of the pipeline 1, it can switch the adjustment action according to the circular cross-section or the elliptical cross-section; the cutting drive adjustment mechanism 4 includes an arc-shaped mounting plate 41, and the relative space of the two arc-shaped mounting plates 41 constitutes a sphere. The top and bottom of the arc-shaped mounting plate 41 are fixedly mounted on the inner wall of the arc-shaped shielding plate 22, and the surface of the arc-shaped mounting plate 41 is fixedly mounted with an arc-shaped rack 42 and an arc-shaped slide rail 43, and the arc-shaped rack 42 and the arc-shaped slide rail 43 are respectively located on both sides of the arc-shaped inner wall of the arc-shaped mounting plate 41.

[0050] Specifically implemented in this way, the cutting drive adjustment mechanism 4 can be adjusted according to the circular or elliptical cross-section of the pipe 1, thereby improving the equipment's ability to cut pipes 1 of different shapes and enhancing the scope of application; the design of the arc-shaped rack 42 and the arc-shaped slide rail 43 allows precise adjustment of the cutting position and angle, ensuring cutting accuracy, reducing errors, and improving cutting quality; by adjusting the arc-shaped rack 42 and the arc-shaped slide rail 43, the operator can easily adjust the cutting position; simplifying the operating process and improving work efficiency.

[0051] An arc-shaped slide rail 43 is slidably inserted with an arc-shaped slider 44, a fixed plate 45 is fixedly installed on the surface of one arc-shaped slider 44, a U-shaped connecting plate 46 is fixedly installed on the surface of the other arc-shaped slider 44, a U-shaped mounting plate 47 is fixedly installed on one side of the U-shaped connecting plate 46, one side of the U-shaped mounting plate 47 and the opposite surface of the fixed plate 45 are rotatably connected with a rotating shaft 48 through a bearing, a rotating motor 49 is located inside the U-shaped mounting plate 47, a rotating motor 49 is also fixedly installed on the surface of the U-shaped connecting plate 46, and the output end of the rotating motor 49 is fixedly installed with the opposite end of the rotating shaft 48.

[0052] Specifically, by the cooperation between the rotating motor 49 and the rotating shaft 48, the cutting device can be accurately rotated and adjusted inside the pipe 1, thereby improving the cutting accuracy and efficiency, and enhancing the flexibility and safety of the equipment.

[0053] A clamping seat 410 is also fixedly installed on the surface of the arc-shaped slider 44, and a swing motor 411 is fixedly installed on the surface of the clamping seat 410. A gear shaft 412 is fixedly installed on the output end of the swing motor 411 through a coupling, and a driving gear 413 is fixedly installed on one end of the gear shaft 412. The teeth of the driving gear 413 are meshed with the tooth grooves of the arc-shaped rack 42, and the swing motor 411 is located inside the U-shaped connecting plate 46.

[0054] Specifically implemented in this way, the swing motor 411 can control the rotation of the driving gear 413, thereby realizing the swing adjustment of the arc-shaped rack 42; and then control the rotating shaft 48 to swing and adjust the cutting angle in the spherical space formed by the two arc-shaped mounting plates 41, adapting to the cutting requirements of pipes 1 with different cutting sections, thereby improving the cutting flexibility.

[0055] The cutting telescopic adjustment mechanism 5 realizes the telescopic adjustment action when cutting a circular cross-section or an elliptical cross-section; the cutting telescopic adjustment mechanism 5 includes a sliding seat 51, the arc surface of the rotating shaft 48 is clamped with a key bar 52 through a key groove, the surface of the key bar 52 and the surface of the rotating shaft 48 are both slidably plugged into the inner wall of the sliding seat 51, and a mounting ring 53 is also fixedly installed on the arc surface of one end of the rotating shaft 48, and a first electric telescopic rod 54 is fixedly installed on the surface of the mounting ring 53, and the telescopic end of the first electric telescopic rod 54 is fixedly installed on the surface of the sliding seat 51.

[0056] Specifically implemented in this way, the cutting telescopic adjustment mechanism 5 can be telescopically adjusted according to the cross-sectional shape of the pipe 1, so as to adapt to the cutting requirements of circular or elliptical cross-sections; the introduction of the electric telescopic rod realizes the automatic extension and contraction of the cutting device, reducing the need for manual adjustment; flexible and precise telescopic adjustment can be achieved when cutting circular or elliptical cross-sections, thereby improving the cutting quality and efficiency, while reducing the operating difficulty and maintenance cost, and enhancing the applicability and safety of the equipment.

[0057] A second electric telescopic rod 55 is fixedly mounted on the surface of the sliding seat 51, a cutting plate 56 is fixedly mounted on the telescopic bottom end of the second electric telescopic rod 55, a laser cutting head 57 is mounted on the surface of the cutting plate 56, and the first electric telescopic rod 54 and the second electric telescopic rod 55 are electrically connected via a conductive slip ring.

[0058] Specifically implemented in this way, the combined use of the first electric telescopic rod 54 and the second electric telescopic rod 55 enables the cutting device to be telescopically adjusted in all directions; the rapid response capability of the electric telescopic rod enables the cutting device to be quickly adjusted to the required cutting position and angle; the electric slip ring allows the electric telescopic rod to maintain power supply during the telescopic process without interrupting the circuit due to movement.

[0059] The adjustable inner support type round pipe cutting device achieves the purpose of efficient and accurate cutting inside a large pipe 1 through its innovative design, especially for the cutting requirements of circular and elliptical cross sections. The device achieves the following beneficial effects through the coordinated work of the pipe tensioning mechanism 2, the pipe running mechanism 3, the cutting drive adjustment mechanism 4 and the cutting telescopic adjustment mechanism 5:

[0060] First, the tensioning mechanism of the device can be adjusted bidirectionally according to the inner diameter of the pipe 1, ensuring uniform tensioning of the inner wall of the pipe 1 during cutting, avoiding deformation of the pipe 1 due to uneven tensioning, and improving cutting accuracy. Second, the automated design of the pipe travel mechanism 3 enables the cutting device to move precisely inside the pipe 1, greatly improving cutting efficiency and reducing manual operation errors.

[0061] The spherical space design of the cutting drive adjustment mechanism 4 and the introduction of the electric telescopic adjustment mechanism enable the device to easily adapt to the cross-sections of pipes 1 of different shapes, realize the precise adjustment of the cutting position, and improve the cutting quality. In addition, the use of the laser cutting head 57 provides high precision and smooth cutting edges, ensuring the high quality of the product.

[0062] The design of the device also takes into account the safety of operation and the ease of maintenance of the equipment. Through the application of electric telescopic rods and conductive slip rings, the cutting device can achieve rapid response and continuous power supply, reducing operational risks and maintenance costs.

[0063] In summary, the device not only improves the efficiency and accuracy of pipe 1 cutting, but also enhances the versatility and applicability of the equipment, and provides a stable, reliable and efficient solution for the cutting of large pipes 1, especially in situations where elliptical cross-section cutting is required, showing its unique advantages and application value.

[0064] Reference Figure 1-Figure 7 , a cutting method of an adjustable internal support type round pipe cutting device, step 1, when cutting a large pipe 1, first control the pipe walking mechanism 3 to drive the pipe tightening mechanism 2 and the cutting drive adjustment mechanism 4 and the cutting telescopic adjustment mechanism 5 to enter the interior of the large pipe 1, and during walking, the walking motor 33 drives the roller 32 to rotate, so that the walking wheel 31 of the large pipe rotates, so that it walks inside the large pipe 1 to the cutting position and stops.

[0065] Step 2: Then control the pipeline tensioning mechanism 2 to tighten, use the driving motor 213 to rotate and control the adjustment shaft 23 to rotate, and synchronously drive the left movable tube 26 and the right movable tube 27 at both ends of the adjustment shaft 23 to move toward or repel each other through the left-handed thread and the right-handed thread arranged on the surface, drive the first connecting rod 25 and the second connecting rod 29 to swing, and then control the multiple walking wheels 31 to be in compression contact with the inner wall of the large pipeline 1, and cooperate with the pipeline walking mechanism 3 to drive the walking adjustment.

[0066] Step three, when cutting, the settings and adjustments are made according to the cross-sectional state that needs to be cut. When cutting a circle, the gear shaft 412 is driven to rotate by the swing motor 411, thereby controlling the driving gear 413 to move on the surface of the arc-shaped rack 42, and then controlling the axis of the rotating shaft 48 to be located at the same axis as the axis of the large pipe 1, and then controlling the cutting direction of the laser cutting head 57 to be set vertically to the large pipe 1, and then driving the laser cutting head 57 to rotate and cut under the rotation of the rotating motor 49, so that the cutting cross-section is circular.

[0067] Step 4. When it is necessary to cut an elliptical cross-section, the swing motor 411 works in cooperation with the sliding of the arc slide rail 43 and the arc slider 44 to drive the rotating shaft 48 to swing in the spherical space of the two arc mounting plates 41, thereby adjusting the cutting direction of the laser cutting head 57 and the angle between the axis of the large pipe 1. During cutting, the rotating shaft 48 rotates, driving the laser cutting head 57 to rotate with the axis of the rotating shaft 48 as the center of the circle, thereby realizing the operation of cutting an elliptical cross-section of the large pipe 1.

[0068] Step 5. During cutting, when the laser cutting head 57 contacts the inner wall of the large pipe 1, the first electric telescopic rod 54 is extended to adjust the cutting position. When cutting an elliptical cross-section, the second electric telescopic rod 55 is extended to adjust the position of the sliding seat 51 to assist the laser cutting head 57 in cutting the position of the elliptical path rotation.

[0069] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable internal support type round pipe cutting device, comprising a pipe (1), characterized in that: The interior of the pipeline (1) is respectively provided with a pipeline tensioning mechanism (2), a pipeline running mechanism (3), a cutting drive adjustment mechanism (4) and a cutting telescopic adjustment mechanism (5); The pipeline tensioning mechanism (2) realizes the action of tensioning and moving of the pipeline running mechanism (3); The pipeline walking mechanism (3) realizes the movement of the cutting drive adjustment mechanism (4) and the cutting telescopic adjustment mechanism (5) inside the pipeline (1); When the cutting drive adjustment mechanism (4) implements the cutting operation of the pipe (1), the adjustment action can be switched according to the circular cross section or the elliptical cross section; The cutting telescopic adjustment mechanism (5) realizes the telescopic adjustment action when cutting a circular cross section or an elliptical cross section.

2. The adjustable inner support type round tube cutting device according to claim 1, characterized in that: The pipeline tensioning mechanism (2) comprises a fixing ring (21), wherein three fixing rings (21) form a group, and two groups of fixing rings (21) are arranged front and back in the axial direction of the pipeline (1). The arc surface of each group of fixing rings (21) is also provided with an arc shielding plate (22) in a circular array, and each group of fixing rings (21) is rotatably connected with an adjusting shaft (23) via a bearing, and the arc surfaces at both ends of the adjusting shaft (23) are respectively provided with a left-handed thread and a right-handed thread.

3. The adjustable inner support type round tube cutting device according to claim 2, characterized in that: The three adjustment shafts (23) are arranged in equal parts in a circular shape on the surface of the fixing ring (21); an articulated seat (24) is fixedly installed on the arc surface of the fixing ring (21) at both ends of each group; the three articulated seats (24) are distributed in a circular array; the surface of the articulated seat (24) is rotatably connected to a first connecting rod (25) via a pin shaft; the surface of the left-handed thread and the surface of the right-handed thread are respectively threadedly connected to a left movable tube (26) and a right movable tube (27); the top of the left movable tube (26) and the top of the right movable tube (27) are both fixedly installed with an adjustment seat (28); the surface of the adjustment seat (28) is rotatably connected to a second connecting rod (29) via a pin shaft; one end of each of the second connecting rods (29) is rotatably connected to the surface of one of the first connecting rods (25) via a pin shaft.

4. The adjustable inner support type round tube cutting device according to claim 3, characterized in that: One end of the adjusting shaft (23) passes through and extends to one end of the fixing ring (21), and a sprocket (210) is fixedly mounted on one end of the adjusting shaft (23), and three sprockets (210) are distributed in a ring array on the surface of the fixing ring (21), and inner walls of the grooves of the three sprockets (210) are drivingly connected with chains (211), and a motor base plate (212) is fixedly mounted on one side of the fixing ring (21), and a driving motor (213) is fixedly mounted on the surface of the motor base plate (212), and an output end of the driving motor (213) is fixedly mounted on one end of the corresponding adjusting shaft (23) through a coupling.

5. The adjustable inner support type round tube cutting device according to claim 3, characterized in that: The pipeline walking mechanism (3) comprises a walking wheel (31), one end of the first connecting rod (25) is rotatably connected to a roller (32) via a bearing, one end of the roller (32) is fixedly mounted on the surface of the walking wheel (31), and the arc surfaces of a plurality of the walking wheels (31) are slidably plugged into the inner wall of the pipeline (1), and a walking motor (33) is also fixedly mounted on the side surface of one of the first connecting rods (25), and the output end of the walking motor (33) is fixedly connected to the surface relative to the roller (32) via a coupling.

6. The adjustable inner support type round tube cutting device according to claim 1, characterized in that: The cutting drive adjustment mechanism (4) comprises an arc-shaped mounting plate (41), the relative space between the two arc-shaped mounting plates (41) forms a sphere, the top and bottom of the arc-shaped mounting plate (41) are fixedly mounted to the inner wall of the arc-shaped shielding plate (22), and the surface of the arc-shaped mounting plate (41) is respectively fixedly mounted with an arc-shaped rack (42) and an arc-shaped slide rail (43), and the arc-shaped rack (42) and the arc-shaped slide rail (43) are respectively located on both sides of the arc-shaped inner wall of the arc-shaped mounting plate (41).

7. The adjustable inner support type round tube cutting device according to claim 6, characterized in that: The surface of the arc-shaped slide rail (43) is slidably plugged with an arc-shaped slider (44), a fixed plate (45) is fixedly installed on the surface of one of the arc-shaped sliders (44), and a U-shaped connecting plate (46) is fixedly installed on the surface of the other arc-shaped slider (44). A U-shaped mounting plate (47) is fixedly installed on one side of the U-shaped connecting plate (46), and a rotating shaft (48) is rotatably connected to one side of the U-shaped mounting plate (47) and the opposite surface of the fixed plate (45) through a bearing. A rotating motor (49) is also fixedly installed on the surface of the U-shaped connecting plate (46), and the output end of the rotating motor (49) is fixedly installed on the opposite end of the rotating shaft (48), and the rotating motor (49) is located inside the U-shaped mounting plate (47).

8. The adjustable inner support type round tube cutting device according to claim 7, characterized in that: A clamping seat (410) is also fixedly mounted on the surface of the arc-shaped slider (44), a swing motor (411) is fixedly mounted on the surface of the clamping seat (410), a gear shaft (412) is fixedly mounted on the output end of the swing motor (411) via a coupling, a driving gear (413) is fixedly mounted on one end of the gear shaft (412), the gear teeth of the driving gear (413) are meshed with the tooth grooves of the arc-shaped rack (42), and the swing motor (411) is located inside the U-shaped connecting plate (46).

9. The adjustable inner support type round tube cutting device according to claim 7, characterized in that: The cutting telescopic adjustment mechanism (5) comprises a sliding seat (51), the arc surface of the rotating shaft (48) is clamped with a key bar (52) through a key groove, the surface of the key bar (52) and the surface of the rotating shaft (48) are both slidably plugged with the inner wall of the sliding seat (51), and a mounting ring (53) is fixedly mounted on the arc surface of one end of the rotating shaft (48), and a first electric telescopic rod (54) is fixedly mounted on the surface of the mounting ring (53), and the telescopic end of the first electric telescopic rod (54) is fixedly mounted on the surface of the sliding seat (51); A second electric telescopic rod (55) is fixedly mounted on the surface of the sliding seat (51); a cutting plate (56) is fixedly mounted on the telescopic bottom end of the second electric telescopic rod (55); a laser cutting head (57) is mounted on the surface of the cutting plate (56); and the first electric telescopic rod (54) and the second electric telescopic rod (55) are both electrically connected via a conductive slip ring.

10. A cutting method according to any one of claims 1 to 9, characterized in that: Step 1: When cutting the large pipe (1), the pipe travel mechanism (3) is first controlled to drive the pipe tension mechanism (2), the cutting drive adjustment mechanism (4) and the cutting telescopic adjustment mechanism (5) to enter the interior of the large pipe (1). During the movement, the travel motor (33) drives the roller (32) to rotate, thereby rotating the travel wheel (31) of the large pipe, so that the large pipe travels inside the large pipe (1) to the cutting position and stops; Step 2: Then, the pipeline tensioning mechanism (2) is controlled to tighten, and the driving motor (213) is used to rotate to control the rotation of the adjusting shaft (23), and the left-handed thread and the right-handed thread arranged on the surface are used to synchronously drive the left movable tube (26) and the right movable tube (27) at both ends of the adjusting shaft (23) to move toward or repel each other, thereby driving the first connecting rod (25) and the second connecting rod (29) to swing, thereby controlling the multiple running wheels (31) to be in compression contact with the inner wall of the large pipeline (1), and cooperating with the pipeline running mechanism (3) to drive the running adjustment; Step 3: During cutting, the settings are adjusted according to the cross-sectional state to be cut. When cutting a circle, the gear shaft (412) is driven to rotate by the swing motor (411), thereby controlling the driving gear (413) to move on the surface of the arc-shaped rack (42), thereby controlling the axis of the rotating shaft (48) and the axis of the large pipe (1) to be located at the same axis, thereby controlling the cutting direction of the laser cutting head (57) to be set vertically to the large pipe (1), and then driving the laser cutting head (57) to rotate and cut under the rotation of the rotating motor (49), so that the cut cross section is circular; Step 4: When it is necessary to cut an elliptical cross section, the swing motor (411) works in cooperation with the sliding movement of the arc-shaped slide rail (43) and the arc-shaped slide block (44) to drive the rotating shaft (48) to swing in the spherical space of the two arc-shaped mounting plates (41), thereby adjusting the angle between the cutting direction of the laser cutting head (57) and the axis of the large pipe (1). During the cutting, the rotating shaft (48) rotates, driving the laser cutting head (57) to rotate around the axis of the rotating shaft (48), thereby realizing the operation of cutting an elliptical cross section of the large pipe (1); Step 5: During cutting, when the laser cutting head (57) contacts the inner wall of the large pipe (1), the first electric telescopic rod (54) is extended to adjust the cutting position, and when cutting an elliptical cross section, the second electric telescopic rod (55) is extended to adjust the position of the sliding seat (51) to assist the laser cutting head (57) in cutting the position of the elliptical path rotation.

Images