Underframe structure of four-chuck laser pipe cutting machine

Abstract

The utility model discloses an underframe structure of a four-chuck laser pipe cutting machine, which comprises a side-hung underframe and a portal frame arranged on the side-hung underframe, the side-hung underframe comprises a plurality of sub-frames spliced in sequence, and the sub-frames and the portal frame are formed by welding rectangular steel pipes, square steel pipes and plates; a first guide rail mounting strip and a first rack mounting strip which extend front and back are arranged at the top of the sub-frame, a second guide rail mounting strip and a third guide rail mounting strip which extend front and back are arranged on one side of the sub-frame, and the second guide rail mounting strip and the third guide rail mounting strip are located on the same vertical plane; and a second rack mounting strip and a fourth guide rail mounting strip which extend left and right are arranged on the portal frame. According to the chassis structure of the four-chuck laser pipe cutting machine, the installation stability of the chucks on the chassis structure is improved, and the chassis structure is designed to be light in weight.

Description

Technical Field

[0001] The utility model relates to the field of laser tube cutting machine equipment, in particular to a base frame structure of a four-chuck laser tube cutting machine. Background Art

[0002] Laser tube cutting machines are mainly used for processing and cutting of round tubes, square tubes and other tubes. They have the advantages of high precision and fast cutting, and are gradually replacing traditional metal cutting equipment.

[0003] The laser tube cutting machine with a side-mounted chuck is convenient for loading and unloading and saves space, so it has the advantage of being lightweight compared to the laser tube cutting machine with a horizontal chuck installation. The laser tube cutting machine with a side-mounted chuck mainly includes a bed and several chucks that are slidably hung on the bed, and the chucks are used to clamp the pipes to be processed. The bed structure of the existing laser tube cutting machine can refer to the patent document (CN217412852U) provided by a side-mounted three-chuck laser tube cutting machine, in which a guide rail is only provided on one side of the bed, and the chuck is slidably connected to the guide rail through a slider. Since the chuck has a large weight, the unilateral sliding connection method makes the installation stability of the chuck poor and prone to unstable operation, which leads to unstable clamping and reduced processing accuracy. Therefore, the bed of the laser tube machine needs to further improve the installation stability of the chuck on the bed in a lightweight design.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a chassis structure for a four-chuck laser tube cutting machine, improve the installation stability of the chucks on the chassis structure, and the chassis structure is lightweight in design.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A chassis structure of a four-chuck laser tube cutting machine, comprising a side-mounted chassis and a gantry frame arranged on the side-mounted chassis, the side-mounted chassis comprising a plurality of sub-frames spliced ​​in sequence, the sub-frame comprising an upper crossbeam, a lower crossbeam arranged below the upper crossbeam, a plurality of first connecting beams connecting the upper crossbeam and the lower crossbeam, a plurality of first bottom beams arranged at equal intervals are arranged at the bottom of the lower crossbeam, the first bottom beam, the lower crossbeam and the first connecting beam are arranged perpendicular to each other; a second bottom beam and a third bottom beam are arranged between two adjacent first bottom beams, the second bottom beam is connected to the bottom of the lower crossbeam, the third bottom beam is located on the right side of the second bottom beam, and each first bottom beam is provided with a vertically arranged A second connecting beam is arranged, and the tops of all the second connecting beams are connected with reinforcing cross beams, and the reinforcing cross beams are connected to the upper cross beams, and the first bottom beams and the third bottom beams are provided with foot plates; the two ends of the subframe are respectively provided with sealing plates; the top of the upper cross beam is provided with a first guide rail mounting strip and a first rack mounting strip extending front and back, the side wall of the upper cross beam is provided with a second guide rail mounting strip extending front and back, and the side wall of the lower cross beam is provided with a third guide rail mounting strip extending front and back, and the second guide rail mounting strip and the third guide rail mounting strip are on the same vertical plane; the gantry is provided with a second rack mounting strip and a fourth guide rail mounting strip extending left and right.

[0008] Furthermore, the number of the sub-racks is three, and the gantry is arranged in the middle of the sub-rack located in the middle.

[0009] Furthermore, reinforcing ribs are provided between each first bottom beam and the lower cross beam.

[0010] Furthermore, the gantry includes two first vertical beams connected to the upper horizontal beam, a second vertical beam connected to a first bottom beam, and a horizontal frame arranged on the top of the two first vertical beams and the second vertical beams, and the three corner positions of the horizontal frame correspond one by one to the two first vertical beams and the second vertical beams respectively.

[0011] Furthermore, the first vertical beam includes a first flat plate and two first sub-tubes arranged in parallel and vertically welded to the first flat plate, and a second flat plate connected to the first flat plate is provided on the reinforcing cross beam; the tops of the two first sub-tubes are welded to the horizontal frame, and a first rib plate is provided between the first sub-tubes and the horizontal frame.

[0012] Furthermore, the second vertical beam includes a first section and a second section spliced ​​in sequence from bottom to top, the first section includes a third flat plate, two second sub-tubes arranged in parallel and vertically welded to the third flat plate, and a fourth flat plate welded to the tops of the two second sub-tubes; a fifth flat plate connected to the third flat plate is provided on one of the first bottom beams; the second section includes a sixth flat plate connected to the fourth flat plate, two third sub-tubes arranged in parallel and vertically welded to the sixth flat plate, the tops of the two third sub-tubes are welded to the horizontal frame, and a second rib plate is provided between the third sub-tube and the horizontal frame; the first flat plate and the sixth flat plate are on the same horizontal plane.

[0013] Furthermore, the horizontal frame includes a first cross beam connecting the top of a first vertical beam and the top of a second vertical beam, a second cross beam connected to the top of another first vertical beam and parallel to the first cross beam, two third connecting beams parallel to each other and connecting the first cross beam and the second cross beam, and an inclined beam connecting the end of the first cross beam and the end of the second cross beam.

[0014] Furthermore, the sealing plate of the sub-frame close to its adjacent sub-frame includes a mounting plate and a shielding plate, the mounting plate is arranged at the ends of the upper beam and the reinforcing beam, and extends downward to the lower beam; the shielding plate is arranged at the ends of the second bottom beam and the third bottom beam, and extends upward to the lower beam; the corresponding mounting plates on the two adjacent sub-frames are connected by bolts.

[0015] Furthermore, an H-shaped reinforcement frame is provided on the mounting plate; and a third rib plate is provided between the mounting plate and the lower cross beam.

[0016] Furthermore, the foot plate is provided with a foot cup mounting hole and a ground pile mounting hole.

[0017] Beneficial effects:

[0018] The base frame structure of the four-chuck laser tube cutting machine provided by the utility model is composed of a plurality of sub-frames which are sequentially spliced ​​into a side-hanging base beam, and a gantry is arranged on the sub-frame in the middle. The sub-frames and the gantry are welded by rectangular steel pipes, square steel pipes and plates, have good structural stability, and realize lightweight design; mounting strips for installing guide rails are respectively provided on the top and side walls of the side-hanging base beam, and the chuck forms a side-hanging sliding connection with the side-hanging base beam through a slider, which can improve the stability of the chuck installation, make the chuck move smoothly and stably, and ensure the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the base frame structure of the four-chuck laser tube cutting machine provided by the utility model.

[0020] Figure 2 for Figure 1 Enlarged view of point E.

[0021] Figure 3 This is a structural diagram of the gantry in the base frame structure of the four-chuck laser tube cutting machine provided by the utility model.

[0022] Figure 4 The utility model provides a schematic cross-sectional view of a sub-frame in the base frame structure of a four-chuck laser tube cutting machine.

[0023] Figure 5 The utility model provides a schematic cross-sectional view of a sub-frame in the base frame structure of a four-chuck laser tube cutting machine.

[0024] Figure 6This is a structural diagram of the end portion of a sub-frame in the base frame structure of the four-chuck laser tube cutting machine provided by the utility model.

[0025] Main component symbol description: gantry 1, first vertical beam 11, first plate 111, first sub-tube 112, second plate 113, first rib plate 114, second vertical beam 12, first section 121, third plate 1211, second sub-tube 1212, fourth plate 1213, fifth plate 1214, second section 122, sixth plate 1221, third sub-tube 1222, second rib plate 123, horizontal frame 13, first cross beam 131, second cross beam 132, third connecting beam 133, inclined beam 134, fourth Rib plate 135, fourth connecting beam 136, sub-frame 2, upper cross beam 21, first guide rail mounting strip 211, first rack mounting strip 212, second guide rail mounting strip 213, lower cross beam 22, third guide rail mounting strip 221, first connecting beam 23, first bottom beam 24, second bottom beam 25, third bottom beam 26, second connecting beam 27, reinforcing cross beam 28, reinforcing rib 29, foot plate 3, sealing plate 4, mounting plate 41, shielding plate 42, reinforcing frame 43, third rib plate 44, second rack mounting strip 5, fourth guide rail mounting strip 6. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the present invention, "front" is the conveying direction of the pipe to be cut, "rear" is opposite to "front", and "left and right" is perpendicular to "front and back".

[0028] See also Figure 1-6The utility model provides a chassis structure of a four-chuck laser tube cutting machine, including a side-mounted chassis and a gantry 1 arranged on the side-mounted chassis, the side-mounted chassis including a plurality of sub-frames 2 spliced ​​in sequence, the sub-frame 2 including an upper crossbeam 21, a lower crossbeam 22 arranged below the upper crossbeam 21, and a plurality of first connecting beams 23 connecting the upper crossbeam 21 and the lower crossbeam 22, and the plurality of first connecting beams 23 are arranged at equal intervals; a plurality of first bottom beams 24 arranged at equal intervals are arranged at the bottom of the lower crossbeam 22, the first bottom beam 24, the lower crossbeam 22 and the first connecting beam 23 are arranged perpendicular to each other; a second bottom beam 25 and a third bottom beam 26 are arranged between two adjacent first bottom beams 24, the second bottom beam 25 is connected to the bottom of the lower crossbeam 22, the third bottom beam 26 is located on the right side of the second bottom beam 25, and each first A vertically arranged second connecting beam 27 is provided on the bottom beam 24, and a reinforcing cross beam 28 is connected to the top of all the second connecting beams 27, and the reinforcing cross beam 28 is connected to the upper cross beam 21, and a foot plate 3 is provided on the first bottom beam 24 and the third bottom beam 26; the two ends of the sub-frame 2 are respectively provided with a sealing plate 4; a first guide rail mounting strip 211 and a first rack mounting strip 212 extending forward and backward are provided on the top of the upper cross beam 21, a second guide rail mounting strip 213 extending forward and backward is provided on the side wall of the upper cross beam 21, and a third guide rail mounting strip 221 extending forward and backward is provided on the side wall of the lower cross beam 22, and the second guide rail mounting strip 213 and the third guide rail mounting strip 221 are on the same vertical plane; a second rack mounting strip 5 and a fourth guide rail mounting strip 6 extending left and right are provided on the gantry 1.

[0029] In the above, the upper cross beam 21, the lower cross beam 22, the first connecting beam 23, the first bottom beam 24, the second bottom beam 25, the third bottom beam 26, the second connecting beam 27 and the reinforcing cross beam 28 are all made of rectangular steel pipes or square steel pipes, which have sufficient structural strength and rigidity.

[0030] All components in the sub-frame 2 are fixed by welding. On the same sub-frame 2, the upper crossbeam 21, the lower crossbeam 22 and the reinforcing crossbeam 28 are designed as a whole long tube, and the second bottom beam 25 and the third bottom beam 26 are welded in sections to reduce the welding difficulty and ensure the structural strength of the side-mounted chassis.

[0031] After the plurality of sub-frames 2 are assembled into a side-mounted chassis, the installation surfaces of the first guide rail mounting strip 211, the first rack mounting strip 212, the second guide rail mounting strip 213 and the third guide rail mounting strip 221 are precisely processed to ensure that the installation surfaces of the first guide rail mounting strip 211, the first rack mounting strip 212, the second guide rail mounting strip 213 and the third guide rail mounting strip 221 on each sub-frame 2 are respectively on the same plane, so that the first guide rail, the first rack, the second guide rail and the third guide rail are accurately installed, the chuck assembly forms a side-mounted sliding connection with the first guide rail, the second guide rail and the third guide rail, and the gear on the chuck assembly meshes with the first rack. Since the first guide rail and the second guide rail are no longer on the same plane, and the second guide rail and the third guide rail are on the same vertical plane, compared with the prior art, the stability of the installation of the chuck assembly can be improved, making the chuck more stable when moving; and the bed structure is a lightweight design.

[0032] Preferably, the first guide rail mounting bar 211 is located on the side of the first rack mounting bar 212 away from the second guide rail mounting bar 213, so that the first rack is installed between the first guide rail and the second guide rail, thereby improving the stability of the left and right movement of the driving chuck, thereby ensuring the processing accuracy.

[0033] The gantry 1 is used to carry the laser assembly. The mounting surfaces of the fourth guide rail mounting bar 6 and the second rack mounting bar 5 are finely processed so that the fourth guide rail and the second rack can be accurately installed. The second rack mounting bar 5 is not only used to install the second rack, but also to install a fourth guide rail. The laser assembly forms a side-hanging sliding connection with the two fourth guide rails, and the gear on the laser assembly is meshed with the second rack.

[0034] In a preferred embodiment, see Figure 1 The number of the sub-frames 2 is three, and the gantry 1 is arranged in the middle of the middle sub-frame 2. Through the above arrangement, the side-mounted chassis formed by splicing three sub-frames 2 can extend the stroke of the chuck and is suitable for processing longer pipe fittings.

[0035] In a preferred implementation, see Figure 2 A reinforcing rib 29 is provided between each first bottom beam 24 and the lower cross beam 22, and the reinforcing rib 29 plays a role in ensuring the stability of the connection between the lower cross beam 22 and the first bottom beam 24; preferably, the reinforcing rib 29 is made of a rectangular tube, which can ensure its strength and rigidity while making the bed frame structure lightweight.

[0036] In a preferred embodiment, see Figure 2 , 3The gantry 1 includes two first vertical beams 11 connected to the upper cross beam 21, a second vertical beam 12 connected to a first bottom beam 24 thereof, and a horizontal frame 13 arranged on the top of the two first vertical beams 11 and the second vertical beam 12, and the three corner positions of the horizontal frame 13 correspond to the two first vertical beams 11 and the second vertical beam 12. Among them, the fourth guide rail mounting bar 6 and the second rack mounting bar 5 are respectively arranged on both sides of the horizontal frame 13, so that the laser assembly can be installed in the middle of the gantry 1, and the two sides of the laser assembly form a sliding connection with the horizontal frame 13, which can improve the stability of the laser assembly installation.

[0037] Further, see Figure 2 , 3 The first vertical beam 11 includes a first flat plate 111 and two first sub-tubes 112 arranged in parallel and vertically welded on the first flat plate 111. A second flat plate 113 connected to the first flat plate 111 is provided on the reinforcing cross beam 28. The mounting surfaces of the first flat plate 111 and the second flat plate 113 are finely processed to ensure accurate installation of the first vertical beam 11. Two first sub-tubes 112 welded in parallel are provided to improve the structural strength and stability of the gantry 1. The tops of the two first sub-tubes 112 are welded to the horizontal frame 13, and a first rib plate 114 is provided between the first sub-tube 112 and the horizontal frame 13. Multiple first rib plates 114 are provided to further improve the structural strength of the gantry 1.

[0038] For further information, see Figure 2 , 3The second vertical beam 12 includes a first section 121 and a second section 122 which are sequentially spliced ​​from bottom to top, the first section 121 includes a third flat plate 1211, two second sub-tubes 1212 arranged in parallel and vertically welded to the third flat plate 1211, and a fourth flat plate 1213 welded to the tops of the two second sub-tubes 1212; a fifth flat plate 1214 connected to the third flat plate 1211 is provided on one of the first bottom beams 24; the second section 122 includes a sixth flat plate 1221 connected to the fourth flat plate 1213, two third sub-tubes 1222 arranged in parallel and vertically welded to the sixth flat plate 1221, the tops of the two third sub-tubes 1222 are welded to the horizontal frame 13, and a second rib plate 123 is provided between the third sub-tube 1222 and the horizontal frame 13; the first flat plate 111 and the sixth flat plate 1221 are on the same horizontal plane. The installation surfaces of the third plate 1211, the fourth plate 1213, the fifth plate 1214 and the sixth plate 1221 are all finely processed to ensure the accurate installation of the second vertical beam 12. By arranging the first plate 111 and the sixth plate 1221 on the same horizontal plane, after the first vertical beam 11 and the second section 122 are welded to the horizontal frame 13, the two first plates 111 and the sixth plate 1221 can be uniformly finely processed, and then the first section 121 and the second section 122 are spliced ​​and assembled to the side hanging bottom beam, which can ensure the accurate installation of the horizontal frame 13.

[0039] In the above embodiments, refer to Figure 2 , 3 The horizontal frame 13 includes a first crossbeam 131 connecting the top of one first vertical beam 11 and the top of the second vertical beam 12, a second crossbeam 132 connected to the top of the other first vertical beam 11 and parallel to the first crossbeam 131, two third connecting beams 133 parallel to each other and connecting the first crossbeam 131 and the second crossbeam 132, and an oblique beam 134 connecting the end of the first crossbeam 131 and the end of the second crossbeam 132. The first crossbeam 131, the second crossbeam 132, the two third connecting beams 133 and the oblique beam 134 are all fixed by welding to splice the horizontal frame 13 into a stable rectangular frame structure.

[0040] Specifically, a fourth rib 135 is welded between the third connecting beam 133 and the first cross beam 131 and the second cross beam 132; a fourth connecting beam 136 parallel to the third connecting beam 133 is welded between the two first vertical beams 11. Through the above arrangement, the structural strength of the gantry 1 is further improved, and the laser assembly can be well supported.

[0041] It should be understood that the bottom of a corner position on the horizontal frame 13 is hollowed out to facilitate the smooth unloading of the cut pipe.

[0042] Similarly, the first cross beam 131 includes two fourth sub-tubes welded and fixed in parallel, and the second cross beam 132 includes two fifth sub-tubes welded and fixed in parallel, so that the widths of the first cross beam 131 and the second cross beam 132 are consistent with the width of the first vertical beam 11 .

[0043] In a preferred embodiment, see Figure 5 , 6 The sealing plate 4 of the sub-frame 2 close to the adjacent sub-frame 2 includes a mounting plate 41 and a shielding plate 42. The mounting plate 41 is arranged at the ends of the upper crossbeam 21 and the reinforcing crossbeam 28, and extends downward to the lower crossbeam 22, that is, the mounting plate 41 is welded and fixed to the ends of the upper crossbeam 21, the reinforcing crossbeam 28 and the lower crossbeam 22; the shielding plate 42 is arranged at the ends of the second bottom beam 25 and the third bottom beam 26, and extends upward to the lower crossbeam 22, that is, the shielding plate 42 is welded and fixed to the ends of the second bottom beam 25, the third bottom beam 26 and the lower crossbeam 22; the corresponding mounting plates 41 on two adjacent sub-frames 2 are connected by bolts. The mounting surface of the mounting plate 41 is finely processed to improve the accuracy of the splicing of each sub-frame 2, thereby ensuring the straightness of the side-mounted chassis.

[0044] Further, see Figure 5 , 6 The mounting plate 41 is provided with an H-shaped reinforcement frame 43, the upper end of one side of the reinforcement frame 43 is welded to the bottom of the upper beam 21, and the lower end thereof is welded to the top of the lower beam 22, the upper end of the other side of the reinforcement frame 43 is welded to the bottom of the reinforcement beam 28, and the lower end thereof is welded to the top of the second bottom beam 25; a third rib plate 44 is provided between the mounting plate 41 and the lower beam 22, and by arranging the reinforcement frame 43 and the third rib plate 44, the structural strength of the mounting plate 41 and the stability of the installation can be improved, thereby ensuring the structural stability of the side-mounted chassis.

[0045] In a preferred embodiment, the foot plate 3 is provided with a foot cup mounting hole and a ground pile mounting hole, and a height adjustment foot cup is installed on the foot cup mounting hole, which provides stable support and anti-skid for the entire chassis structure, and the chassis structure is leveled by rotating the screw on the height adjustment foot cup. After the laser tube cutting machine is debugged, expansion screws are installed on the ground and connected to the ground pile mounting hole to achieve locking, so as to ensure the stability of the laser tube cutting machine during long-term operation.

[0046] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A chassis structure of a four-chuck laser tube cutting machine, It is characterized in that It comprises a side-mounted chassis and a gantry frame arranged on the side-mounted chassis, the side-mounted chassis comprises a plurality of sub-frames spliced ​​in sequence, the sub-frame comprises an upper crossbeam, a lower crossbeam arranged below the upper crossbeam, a plurality of first connecting beams connecting the upper crossbeam and the lower crossbeam, a plurality of first bottom beams arranged at equal intervals are arranged at the bottom of the lower crossbeam, the first bottom beam, the lower crossbeam and the first connecting beam are arranged perpendicular to each other; a second bottom beam and a third bottom beam are arranged between two adjacent first bottom beams, the second bottom beam is connected to the bottom of the lower crossbeam, the third bottom beam is located on the right side of the second bottom beam, and each first bottom beam is provided with a vertically arranged second connecting beam, All second connecting beams are connected to the top with a reinforcing cross beam, and the reinforcing cross beam is connected to the upper cross beam, the first bottom beam and the third bottom beam are provided with foot plates; the two ends of the subframe are respectively provided with sealing plates; the top of the upper cross beam is provided with a first guide rail mounting bar and a first rack mounting bar extending forward and backward, the side wall of the upper cross beam is provided with a second guide rail mounting bar extending forward and backward, the side wall of the lower cross beam is provided with a third guide rail mounting bar extending forward and backward, and the second guide rail mounting bar and the third guide rail mounting bar are on the same vertical plane; the gantry is provided with a second rack mounting bar and a fourth guide rail mounting bar extending left and right.

2. The chassis structure of the four-chuck laser tube cutting machine according to claim 1, It is characterized in that The number of the sub-frames is three, and the gantry is arranged in the middle of the sub-frame located in the middle.

3. The chassis structure of the four-chuck laser tube cutting machine according to claim 1, It is characterized in that A reinforcing rib is provided between each first bottom beam and the lower cross beam.

4. The chassis structure of the four-chuck laser tube cutting machine according to claim 1, It is characterized in that The gantry includes two first vertical beams connected to the upper horizontal beam, a second vertical beam connected to a first bottom beam, and a horizontal frame arranged on the top of the two first vertical beams and the second vertical beams, and the three corner positions of the horizontal frame correspond to the two first vertical beams and the second vertical beams respectively.

5. The chassis structure of the four-chuck laser tube cutting machine according to claim 4, It is characterized in that The first vertical beam includes a first flat plate and two first sub-tubes arranged in parallel and vertically welded to the first flat plate, and a second flat plate connected to the first flat plate is provided on the reinforcing cross beam; the tops of the two first sub-tubes are welded to the horizontal frame, and a first rib plate is provided between the first sub-tubes and the horizontal frame.

6. The chassis structure of the four-chuck laser tube cutting machine according to claim 5, It is characterized in that The second vertical beam includes a first section and a second section which are spliced ​​in sequence from bottom to top, the first section including a third flat plate, two second sub-tubes which are arranged in parallel and vertically welded to the third flat plate, and a fourth flat plate which is welded to the tops of the two second sub-tubes; a fifth flat plate connected to the third flat plate is provided on one of the first bottom beams; the second section includes a sixth flat plate connected to the fourth flat plate, two third sub-tubes which are arranged in parallel and vertically welded to the sixth flat plate, the tops of the two third sub-tubes are welded to the horizontal frame, and a second rib plate is provided between the third sub-tube and the horizontal frame; the first flat plate and the sixth flat plate are on the same horizontal plane.

7. The chassis structure of the four-chuck laser tube cutting machine according to claim 4, It is characterized in that The horizontal frame includes a first cross beam connecting the top of a first vertical beam and the top of a second vertical beam, a second cross beam connected to the top of another first vertical beam and parallel to the first cross beam, two third connecting beams parallel to each other and connecting the first cross beam and the second cross beam, and an inclined beam connecting the end of the first cross beam and the end of the second cross beam.

8. The chassis structure of the four-chuck laser tube cutting machine according to claim 1, It is characterized in that The sealing plate of the sub-frame close to its adjacent sub-frame includes a mounting plate and a shielding plate, the mounting plate is arranged at the ends of the upper beam and the reinforcing beam, and extends downward to the lower beam; the shielding plate is arranged at the ends of the second bottom beam and the third bottom beam, and extends upward to the lower beam; the corresponding mounting plates on the two adjacent sub-frames are connected by bolts.

9. The chassis structure of the four-chuck laser tube cutting machine according to claim 8, It is characterized in that The mounting plate is provided with an H-shaped reinforcement frame; a third rib plate is provided between the mounting plate and the lower cross beam.

10. The chassis structure of the four-chuck laser tube cutting machine according to claim 1, It is characterized in that The foot plate is provided with a foot cup mounting hole and a ground pile mounting hole.

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