A double-head plasma cutting machine for steel structure processing

Abstract

The application belongs to the field of cutting equipment, and particularly relates to a double-head plasma cutting machine for steel structure machining. The double-head plasma cutting machine comprises a rack, a portal frame walking on the rack, two cutting torches arranged on the portal frame, a crossbeam and stand columns arranged on both sides of the crossbeam, and the cutting torches are arranged on the crossbeam. The cutting torches are arranged behind the crossbeam, and the auxiliary beam is arranged, so that the relative position of the cutting torches for cutting the steel pipe is kept unchanged during the walking of the portal frame. Meanwhile, the rotation driving mechanism, the clamping and stabilizing mechanism and the walking mechanism are arranged, so that the cutting of the steel pipe is effectively realized, and the simultaneous cutting of the steel plate and the pipe is realized under the condition that the rack is unchanged, and the utilization efficiency of the double-head plasma cutting machine is improved.

Description

Technical Field

[0001] This invention belongs to the field of cutting equipment, and particularly relates to a double-head plasma cutting machine for steel structure processing. Background Technology

[0002] A plasma cutting machine is a machine that uses plasma cutting technology to process metal materials. Plasma cutting utilizes the heat of a high-temperature plasma arc to melt (and evaporate) the metal at the workpiece's cut edge, and then uses the momentum of high-speed plasma to expel the molten metal to form a cut.

[0003] The plasma cutting machines commonly found on the market are mainly divided into single-head cutting machines and double-head cutting machines. The main difference between the two lies in whether there is one or two cutting torches (cutting guns). The cutting torch of a double-head cutting machine is a structure that can be moved independently. This structural design significantly improves the efficiency of the plasma cutting machine.

[0004] However, in the processing of steel structures, not all steel plates require two cutting torches to work simultaneously. Most of the time, a single cutting torch is needed. In order to make effective use of the two cutting torches, the structure of the walking frame of the double-head cutting machine is extended. At the same time, a steel pipe rotating and moving mechanism is set on one side of the frame, so that when using a single cutting torch, the other cutting torch can be used effectively.

[0005] While the above structure can meet the need for simultaneous cutting of plates and tubes, the existing steel pipe rotation and movement mechanism occupies a large area, making the entire cutting platform occupy a large area. Moreover, the existing steel plates and tubes are mostly lifted by electric hoists. If set against the wall, the lifting of steel tubes will be interfered with by the cutting machine frame, affecting the feeding. Summary of the Invention

[0006] This invention addresses the technical problems existing in the full utilization of existing dual-head plasma cutting machines in steel structure processing, and proposes a dual-head plasma cutting machine for steel structure processing that is reasonably designed, simple in structure, convenient to process, and can effectively process steel plates simultaneously without increasing the floor space.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The present invention provides a double-head plasma cutting machine for steel structure processing, including a frame and a gantry frame that travels on the frame. Two cutting torches are provided on the gantry frame. The gantry frame includes a crossbeam and columns on both sides of the crossbeam. The cutting torches travel on the crossbeam and are positioned behind the crossbeam in the direction of travel. A notch is provided on one side of the crossbeam, and an auxiliary beam is provided in the notch. A longitudinal beam is also provided at the rear end of the columns. The auxiliary beam can travel on the longitudinal beam, and the cutting torch can travel on the auxiliary beam. The frame is also provided with a rotation drive mechanism for controlling the rotation of a circular tube, a clamping and stabilizing mechanism for maintaining the rotational stability of the circular tube, and a traveling mechanism for controlling the circular tube to travel along the direction of travel of the gantry frame.

[0008] Preferably, the rotation drive mechanism includes drive wheels spaced apart along the travel direction of the gantry and a drive frame for mounting the drive wheels. A rotating shaft is fitted at the center of each drive wheel, and the rotating shaft is rotatably mounted on the drive frame. The drive frame is vertically and vertically mounted within the machine frame.

[0009] Preferably, the clamping stabilizing mechanism includes a clamping seat arranged in the shape of a box and a lifting seat disposed within the clamping seat. The lifting seat is vertically movable within the clamping seat. A central support wheel is provided at the top of the lifting seat and is rotatably mounted on the lifting seat. A side support arm is provided on one side of the lifting seat. The lower middle part of the side support arm is rotatably mounted within the clamping seat. One end of the side support arm extending out of the clamping seat is arc-shaped. A side support wheel is provided on the inner side of the end of the side support arm extending out of the clamping seat and is rotatably mounted on the side support arm. The bottom of the side support arm is arc-shaped. A triangular protrusion is provided on one side of the lifting seat. The side support arm can be flipped under the action of the triangular protrusion. The clamping seat is vertically movable within the frame.

[0010] Preferably, the traveling mechanism includes tapered idlers spaced apart along the traveling direction of the gantry and an idler frame for mounting the tapered idlers. The tapered idlers are rotatably mounted on the idler frame, and the idler frame is liftably mounted inside the frame.

[0011] Preferably, an auxiliary pulley is also fitted on the rotating shaft, a drive pulley is provided below the auxiliary pulley, a drive shaft is fitted in the middle of the drive pulley, a drive motor is provided at one end of the drive shaft, and the drive motor is located at the end near the frame.

[0012] Preferably, the clamping seat is further provided with a clamping reversing device, the output shaft of which is connected to a lifting screw, the lifting screw passing through the lifting seat, and a screw nut cooperating with the lifting screw is provided in the lifting seat. A support plate is provided on the top of the lifting seat, and the support plate is located near both sides of the lifting seat. A central support wheel is rotatably mounted on the support plate, and the central support wheels on the two support plates are spaced apart. The support plate extends out of the clamping seat, and a slider is provided on the side of the lifting seat away from the triangular protrusion. A track cooperating with the slider is provided in the clamping seat.

[0013] Preferably, a clamping motor is provided at one end of the frame, the drive end of the clamping motor is connected to a clamping shaft, and the clamping commutator is mounted on the clamping shaft.

[0014] Preferably, a rotating shaft is fitted in the middle of the conical idler roller, the rotating shaft is rotatably mounted on the idler roller frame, an idler roller pulley is fitted on the rotating shaft, a traveling pulley is provided below the idler roller pulley, the idler roller pulley and the traveling pulley are connected by a belt, a traveling shaft is fitted on the traveling pulley, and a traveling motor is connected to the end of the traveling shaft.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] This invention provides a double-head plasma cutting machine for steel structure processing. By setting the cutting torch behind the crossbeam and with the auxiliary beam, the relative position of the cutting torch for cutting steel pipes can be kept constant during the movement of the gantry frame. At the same time, with the help of the rotation drive mechanism, the clamping and stabilizing mechanism and the walking mechanism, the cutting of steel pipes is effectively realized. Thus, while keeping the frame unchanged, the simultaneous cutting of steel plates and pipes is achieved, improving the utilization efficiency of the double-head plasma cutting machine. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the double-head plasma cutting machine for steel structure processing provided in Example 1;

[0019] Figure 2 A top view of the double-head plasma cutting machine for steel structure processing provided in Example 1;

[0020] Figure 3A schematic diagram of the gantry structure provided in Example 1;

[0021] Figure 4 This is a schematic diagram of the gantry structure when the auxiliary beam is in operation, as provided in Example 1.

[0022] Figure 5 A schematic diagram of the rotation drive mechanism provided in Example 1;

[0023] Figure 6 This is a schematic diagram of the rotation drive mechanism provided in Embodiment 1 from another angle;

[0024] Figure 7 This is a schematic diagram of the clamping and stabilizing mechanism provided in Example 1;

[0025] Figure 8 This is a schematic diagram of the internal structure of the clamping seat provided in Embodiment 1;

[0026] Figure 9 A schematic diagram of the walking mechanism provided in Example 1;

[0027] Figure 10 This is a schematic diagram of the clamping stabilizing mechanism and the traveling mechanism provided in Example 1;

[0028] Figure 11 A schematic diagram of the structure between the rotation drive mechanism, the clamping stabilization mechanism and the walking mechanism provided in Embodiment 1;

[0029] In the above figures, 1. Frame; 11. Saw blade; 2. Gantry frame; 21. Column; 22. Crossbeam; 23. Longitudinal beam; 24. Auxiliary beam; 3. Cutting torch; 4. Rotary drive mechanism; 41. Drive wheel; 42. Drive frame; 43. Rotating shaft; 44. Auxiliary pulley; 45. Drive pulley; 46. Drive shaft; 47. Drive motor; 5. Clamping and stabilizing mechanism; 51. Clamping seat; 52. Lifting seat; 521. 522. Support plate; 53. Triangular protrusion; 54. Middle support wheel; 55. Side support arm; 56. Side support wheel; 57. Clamping reversing device; 58. Lifting screw; 69. Clamping motor; 60. Clamping shaft; 61. Traveling mechanism; 62. Conical idler roller; 63. Idler roller frame; 64. Rotating shaft; 65. Idler roller pulley; 66. Traveling pulley; 67. Traveling shaft; 68. Traveling motor. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0032] Example 1, as Figures 1-4 As shown, this embodiment aims to achieve the dual-head plasma cutting machine's ability to simultaneously cut plates and tubes without increasing the equipment's footprint. To achieve this objective, the dual-head plasma cutting machine for steel structure processing provided in this embodiment includes a frame 1 and a gantry 2 that travels on the frame 1. Two cutting torches 3 are mounted on the gantry 2. The gantry 2 includes a crossbeam 22 and columns 21 mounted on both sides of the crossbeam 22. The cutting torches 3 travel on the crossbeam 22. The above structure is a common structure of existing dual-head plasma cutting machines, and therefore, it will not be described in detail in this embodiment.

[0033] Considering that when the cutting torch 3 cuts the steel plate, the gantry 2 is in a moving state. While this moving state is correct for cutting the steel plate, it results in a slit rather than a section for the steel pipe. Existing equipment controls the movement of the steel pipe to maintain the relative position of the cutting torch 3. However, since the steel pipe is rotating, controlling the rotation and movement of the steel pipe to maintain the relative position is complex and requires end-point control of rotation. This control method is difficult to apply without increasing the volume. Therefore, in this embodiment, the cutting torch 3 is positioned behind the crossbeam 22 in the traveling direction. By positioning the cutting torch 3 behind the crossbeam 22 in the traveling direction, the crossbeam 22 can move without moving the cutting torch 3, thus maintaining the relative position of the cutting torch 3.

[0034] To maintain the relative position of the cutting torch 3, a notch is provided on one side of the crossbeam 22. The notch is also rectangular in shape, and an auxiliary beam 24 is provided inside the notch. The auxiliary beam 24 is used to fill the notch, so that the horizontal and vertical planes of the auxiliary beam 24 are consistent with the crossbeam 22. At the same time, a longitudinal beam 23 is provided at the rear end of the column 21. The longitudinal beam 23 is set at a perpendicular angle to the crossbeam 22, and the auxiliary beam 24 can move on the longitudinal beam 23. Specifically, a motor is provided on the crossbeam 22, and the power end of the motor is connected to a lead screw. A lead screw nut seat is provided on the side of the auxiliary beam 24 near the column 21. At the same time, sliders are provided at the upper and lower ends of the lead screw nut seat. Tracks are provided on the column 21 and the longitudinal beam 23. The tracks and sliders have two functions: one is to guide the auxiliary beam 24, and the other is to clamp the auxiliary beam 24 to fix it. Of course, when the auxiliary beam 24 and the crossbeam 22 are kept horizontal, in this embodiment, a groove is provided on the side of the auxiliary beam 24 away from the column 21, and a reinforcing plate is provided on the inner wall of the notch of the crossbeam 22. The reinforcing plate can be inserted into the notch to achieve a certain support. At the same time, an electromagnetic chuck can also be installed at the notch of the crossbeam 22 to further fix the auxiliary beam 24.

[0035] In this way, by simply determining the travel speed of the crossbeam 22 and the travel speed of the auxiliary beam 24, it can be ensured that the position of the cutting torch 3 on the auxiliary beam 24 relative to the steel pipe remains unchanged.

[0036] Of course, the cutting torch 3 can be mounted on the auxiliary beam 24, that is, the rack and track required for the cutting torch 3 to move are also mounted on the auxiliary beam 24, so that the cutting torch 3 can move from the crossbeam 22 to the auxiliary beam 24 without hindrance while the auxiliary beam 24 is kept horizontal with the crossbeam 22.

[0037] With the above settings, the relative position of the cutting torch 3 is fixed. Then, the rotation of the steel pipe needs to be realized. Since the cutting of the steel pipe is to cut into segments, the movement of the steel pipe is also required. Therefore, a rotation drive mechanism 4 for controlling the rotation of the round pipe, a clamping and stabilizing mechanism 5 for maintaining the rotation stability of the round pipe, and a traveling mechanism 6 for controlling the movement of the round pipe along the traveling direction of the gantry 2 are also provided in the frame 1.

[0038] Considering that the existing double-head plasma cutting machine frame 1 is set on both sides, and several rows of serrated strips 11 are arranged in the middle of the frame 1 to form a support for the steel plate, the gaps between these serrated strips 11 can be used to set up relevant mechanisms to realize the rotation and movement of the steel pipe.

[0039] To achieve the rotation of the steel pipe, this embodiment employs a side friction drive method. Therefore, as follows: Figure 5 , Figure 6As shown, the rotating drive mechanism 4 includes drive wheels 41 spaced apart along the traveling direction of the gantry 2 and a drive frame 42 for mounting the drive wheels 41. The drive wheels 41 are located in the gaps between the saw teeth 11. The drive wheels 41 are generally disc-shaped, while the drive frame 42 is U-shaped. A rotating shaft 43 is mounted in the center of the drive wheels 41. The rotating shaft 43 is rotatably mounted on the drive frame 42. Considering that the space occupied by the drive wheels 41 is only the gaps between the saw teeth 11, if the side height of the drive wheels 41 is too small, it will affect the friction effect. In order not to affect the cutting of the steel plate, when cutting a steel plate individually, the drive wheels 41 should be below the saw teeth 11. To maintain this, the drive frame 42 needs to be height-adjustable within the frame 1. Therefore, placing the motor on one side of the drive frame 42 would reduce the side height of the drive wheel 41, otherwise interference would occur. To address this, in this embodiment, an auxiliary pulley 44 is mounted on the rotating shaft 43, and a drive pulley 45 is positioned below the auxiliary pulley 44. A drive shaft 46 is mounted in the middle of the drive pulley 45. Since the rotation direction of the drive wheel 41 is perpendicular to the travel direction of the gantry 2, the axial direction of the drive shaft 46 can be aligned with the travel direction of the gantry 2, meaning it can be directly mounted on the drive pulley 45. Several spaced-apart drive pulleys 45 can share a single drive. Therefore, a drive motor 47 is mounted at one end of the drive shaft 46, located near the end of the frame 1.

[0040] In this embodiment, a lifting plate is provided below the drive frame 42. Several drive frames 42 arranged at intervals share a single lifting plate. A lifting cylinder is provided below the lifting plate to raise and lower the drive wheel 41. In this way, when it is not needed, the drive wheel 41 can be lowered below the serrated rack 11.

[0041] Considering that the rotation drive mechanism 4 uses lateral friction to rotate the steel pipe, the position of the steel pipe needs to be defined before it can rotate. The traditional method is to use an upper and lower structure to hold the steel pipe, but this method is inconvenient for loading in this embodiment. Therefore, to facilitate loading the steel pipe, this embodiment also provides a clamping and stabilizing mechanism 5, such as... Figure 7 , Figure 8As shown, the clamping stabilizing mechanism 5 provided in this embodiment includes a clamping seat 51 arranged in the shape of a box and a lifting seat 52 arranged in the clamping seat 51. In this embodiment, the clamping seat 51 includes a front plate, a rear plate and a support plate 521 arranged between the front plate and the rear plate. The front plate and the rear plate are arranged vertically, and the support plate 521 can be regarded as being arranged horizontally. In this way, the clamping seat 51 forms a box-shaped structure. The lifting seat 52 is generally rectangular in shape and can be raised and lowered within the clamping seat 51. The lifting seat 52 can be controlled by an electric cylinder. In this embodiment, considering that the clamping seats 51 are also spaced apart, the lifting seat 52 is controlled by a lifting screw 56. In this way, a single motor can be used to raise and lower several lifting seats 52 simultaneously. Specifically, a clamping reversing device 55 is also provided in the clamping seat 51. The clamping reversing device 55 is used to realize the angle change of the rotating shaft 43. It is an existing mature product and will not be described in detail in this embodiment. The clamping reversing device 55 is located at the bottom of the clamping seat 51. The output shaft of the clamping reversing device 55 is connected to the lifting screw 56. In this embodiment, the output shaft is vertically upward. The lifting screw 56 passes through the lifting seat 52. A screw nut that cooperates with the lifting screw 56 is provided in the lifting seat 52. At the same time, a slider is provided on the side of the lifting seat 52 near the middle plate, and a track that cooperates with the slider is provided on the middle plate. This ensures the stable lifting of the lifting seat 52. A clamping shaft 58 is fitted onto the input end of the clamping commutator 55, and a clamping motor 57 is provided at one end of the clamping shaft 58. In this way, the clamping motor 57 can be used to realize the synchronous lifting of several lifting seats.

[0042] The lifting seat 52 serves three purposes: first, to provide bottom support for the steel pipe; second, to control the side support arm 54 to clamp the steel pipe; and third, to lift the steel pipe from the traveling mechanism 6, allowing it to detach from the traveling mechanism 6. Considering that the lifting screw 56 needs to pass through the lifting seat 52, in this embodiment, a support plate 521 is provided on the top of the lifting seat 52. The support plate 521 is positioned near both sides of the lifting seat 52, thus forming a U-shaped structure at the top of the lifting seat 52. The support plate 521 can extend out of the clamping seat 51. The middle support wheel 53 is rotatably mounted on the support plate 521, with the two support plates 521 spaced apart. This arrangement of the two middle support wheels 53 facilitates lifting the steel pipe from the traveling mechanism 6 and also allows the other end of the lifting screw 56 to be rotatably mounted on the middle plate, ensuring the lifting and lowering of the lifting seat 52. It should be noted that the middle support wheel 53 is rotatably mounted on the lifting seat 52, and the rotation direction of the middle support wheel 53 is consistent with the rotation direction of the drive wheel 41.

[0043] Thus, the steel pipe is supported and rotated at its bottom using a central support wheel 53, and at one side using a drive wheel 41. For this purpose, the other side needs to be clamped to ensure the steel pipe's rotation does not deviate. Therefore, a side support arm 54 is provided on one side of the lifting seat 52. The lower middle part of the side support arm 54 is rotatably mounted within the clamping seat 51, meaning a shaft is located at the lower middle part of the side support arm 54. This shaft allows the side support arm 54 to be flipped. Since the steel pipe is circular, it needs to be fixed. In this embodiment, the side support arm 54 extends... One end of the clamping seat 51 is arc-shaped. Since the steel pipes are of different sizes, the arc of the side support arm 54 must be greater than the arc of the largest steel pipe that can be cut. This ensures proper clamping. At the same time, a side support wheel 541 is provided on the inner side of the end of the side support arm 54 that extends out of the clamping seat 51. The side support wheel 541 is rotatably mounted on the side support arm 54. Since the arc of the side support arm 54 must be greater than the arc of the largest steel pipe that can be cut, and the steel pipes are of different sizes, multiple spaced side support wheels 541 are provided on the inner side of the end of the side support arm 54 that extends out of the clamping seat 51.

[0044] To control the bottom of the side support arm 54 to be arc-shaped, a triangular protrusion 522 is provided on one side of the lifting seat 52. In this way, when the lifting seat 52 rises, the side support arm 54 can be controlled to flip towards the drive wheel 41, thereby clamping the steel pipe. When the lifting seat 52 falls, the side support arm 54 is no longer restrained by the triangular cam. Under the influence of gravity at the end or the structure of a return spring between the side support arm 54 and the clamping seat 51, the side support arm 54 can be flipped away from the drive wheel 41, opening up the space for placing the steel pipe and ensuring the rapid placement of the steel pipe.

[0045] Of course, to avoid interfering with the placement of the steel plate during individual steel plate cutting, the clamping seat 51 can be raised and lowered within the frame 1. Specifically, lifting plates and cylinders are also provided at the bottom of several clamping seats 51 to realize the raising and lowering of the clamping seats 51.

[0046] Traditional walking mechanisms 6 rely on end-driven rotation of the steel pipe. Therefore, they move by pushing the steel pipe. This method suffers from significant interference due to the serrated edge 11. Therefore, in this embodiment, as... Figure 9 As shown, the traveling mechanism 6 includes tapered rollers 61 spaced apart along the traveling direction of the gantry 2 and roller frames 62 for mounting the tapered rollers 61. The roller frames 62 are also located in the gap between the two serrated bars 11. Unlike the clamping seat 51 and the drive wheel 41 which are located in the same gap, the roller frames 62 are located in the adjacent gaps. The tapered rollers 61 are composed of two opposing frustums.

[0047] The tapered idler 61 is rotatably mounted on the idler frame 62. In this way, the friction between the tapered idler 61 and the steel pipe is used to transport the steel pipe. Of course, this is to avoid interfering with the placement of the steel plate when cutting the steel plate separately. The idler frame 62 is height-adjustable within the frame 1. Since the tapered idler 61 and the clamping seat 51 are not in the same gap, they share a lifting plate.

[0048] To achieve the rotation of the conical idler roller 61, in this embodiment, a rotating shaft 63 is fitted in the middle of the conical idler roller 61. The rotating shaft 63 is rotatably mounted on the idler roller frame 62. An idler roller pulley 64 is fitted on the rotating shaft 63, and a traveling pulley 65 is provided below the idler roller pulley 64. The idler roller pulley 64 and the traveling pulley 65 are connected by a belt. At the same time, a traveling shaft 67 is fitted on the traveling pulley 65. Specifically, a traveling commutator 66 is provided on the idler roller frame 62. The output end of the traveling commutator 66 is horizontally positioned. The traveling pulley 65 is fitted on the output shaft of the traveling commutator 66, and the traveling shaft 67 is the input shaft of the traveling commutator 66. In this way, several traveling commutators 66 share one traveling shaft 67. A traveling motor 68 is connected to the end of the traveling shaft 67.

[0049] With the above settings, such as Figure 1 , Figure 2 , Figure 10 , Figure 11As shown, in specific use, firstly, the gantry 2 is moved to the end of the frame 1. Then, the traveling mechanism 6 and the clamping and stabilizing mechanism 5 are raised, exposing the conical roller 61 above the sawtooth strip 11. Then, the electric hoist is used to place the steel pipe onto the conical roller 61. Then, the traveling motor 68 moves, moving the part of the steel pipe to be cut. Then, the clamping motor and the lifting cylinder of the drive wheel 41 are activated, driving the lifting seat 52 and the drive wheel 41 to rise, so that the steel pipe is released from the conical roller 61, thus completing the clamping of the steel pipe. At this time, the steel plate to be cut is placed. After the steel plate is placed, the cutting torch 3 is started. After the cutting torch 3 moves to the designated position and the auxiliary beam 24, the operation begins. During the movement of the gantry 2, the auxiliary beam 24 moves in the opposite direction, keeping the cutting torch 3 on the auxiliary beam 24 relative to the steel plate. As the pipe's position changes, the drive wheel 41 rotates, causing the steel pipe to rotate. It should be noted that the drive wheel 41 rotates slowly. After cutting, the drive wheel 41 stops rotating, and the clamping motor and the lifting cylinder of the drive wheel 41 actuate, causing the lifting seat 52 and the drive wheel 41 to descend. At the same time, the side support arm 54 flips, releasing its grip on the steel pipe. The height of the steel pipe then decreases further. After the steel pipe descends to the conical roller 61, it stops descending. The clamping motor and the lifting cylinder of the drive wheel 41 continue to operate. Once the lifting seat 52 and the drive wheel 41 descend to a point where there is no interference, the conical roller 61 rotates, transporting the cut steel pipe away while moving the steel pipe to be cut to the designated position. At this point, the auxiliary beam 24 resets and remains horizontal with the crossbeam 22. The above actions are then repeated.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A double-head plasma cutting machine for steel structure processing, comprising a frame and a portal frame walking on the frame, two cutting torches are arranged on the portal frame, the portal frame comprises a cross beam and a stand column arranged on both sides of the cross beam, and the cutting torches are arranged to walk on the cross beam, characterized in that, The cutting torch is arranged behind the walking direction of the cross beam, one side of the cross beam is provided with a notch, an auxiliary beam is arranged in the notch, the auxiliary beam is used to fill the notch, the horizontal plane and the vertical plane of the auxiliary beam are consistent with the cross beam, the rear end of the stand is further provided with a longitudinal beam, the longitudinal beam is arranged at a vertical angle with the cross beam, the auxiliary beam is arranged to walk on the longitudinal beam, the cutting torch is arranged to walk on the auxiliary beam, the frame is further provided with a rotating drive mechanism for controlling the rotation of the circular pipe, a clamping stability mechanism for keeping the stability of the rotation of the circular pipe and a walking mechanism for controlling the walking of the circular pipe along the walking direction of the gantry, the rotating drive mechanism comprises driving wheels arranged at intervals along the walking direction of the gantry and a driving frame for arranging the driving wheels, the center of the driving wheel is sleeved with a rotating shaft, the rotating shaft is rotatably arranged on the driving frame, the driving frame is arranged to be liftable in the frame, the clamping stability mechanism comprises a clamping seat arranged in a box body and a lifting seat arranged in the clamping seat, the lifting seat is arranged to be liftable in the clamping seat, the top of the lifting seat is provided with a middle supporting wheel, the middle supporting wheel is rotatably arranged on the lifting seat, one side of the lifting seat is provided with a side supporting arm, the middle and lower part of the side supporting arm is rotatably arranged in the clamping seat, one end of the side supporting arm extending out of the clamping seat is arranged in an arc shape, the inner side of one end of the side supporting arm extending out of the clamping seat is provided with a side supporting wheel, the side supporting wheel is rotatably arranged on the side supporting arm, the bottom of the side supporting arm is arranged in an arc shape, one side of the lifting seat is provided with a triangular protrusion, the side supporting arm is arranged to be reversible under the action of the triangular protrusion, the clamping seat is arranged to be liftable in the frame, the walking mechanism comprises conical rollers arranged at intervals along the walking direction of the gantry and a roller frame for arranging the conical rollers, the conical rollers are rotatably arranged on the roller frame, the roller frame is arranged to be liftable in the frame.

2. The double-head plasma cutting machine for steel structure processing according to claim 1, characterized in that, The rotating shaft is further sleeved with an auxiliary belt pulley, a driving belt pulley is arranged below the auxiliary belt pulley, a driving shaft is sleeved in the middle of the driving belt pulley, a driving motor is arranged at one end of the driving shaft, and the driving motor is arranged close to the end of the frame.

3. The double-head plasma cutting machine for steel structure processing according to claim 2, characterized in that, A clamping reverser is further arranged in the clamping seat, a lifting lead screw is connected to the output shaft of the clamping reverser, the lifting lead screw passes through the lifting seat, a lead screw nut matched with the lifting lead screw is arranged in the lifting seat, a supporting plate is arranged at the top of the lifting seat, the supporting plate is arranged close to the two sides of the lifting seat, the middle supporting wheel is rotatably arranged on the supporting plate, the middle supporting wheels on the two supporting plates are arranged at intervals, the supporting plate extends out of the clamping seat, a sliding block is arranged on the side of the lifting seat away from the triangular protrusion, and a track matched with the sliding block is arranged in the clamping seat.

4. The double-head plasma cutting machine for steel structure processing according to claim 3, characterized in that, One end of the frame is provided with a clamping motor, a clamping shaft is connected to the driving end of the clamping motor, and the clamping reverser is sleeved on the clamping shaft.

5. The double-head plasma cutting machine for steel structure processing according to claim 4, characterized in that, The middle part of the conical carrier roller is sleeved with a rotating shaft, the rotating shaft is rotatably arranged on a carrier roller frame, a carrier roller belt pulley is sleeved on the rotating shaft, a walking belt pulley is arranged below the carrier roller belt pulley, a belt is connected between the carrier roller belt pulley and the walking belt pulley, a walking shaft is sleeved on the walking belt pulley, and a walking motor is connected to the end of the walking shaft.

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