Large-diameter industrial furnace tube cutting equipment

Abstract

The invention discloses large-diameter industrial furnace tube cutting equipment, and particularly relates to the technical field of furnace tube cutting, the large-diameter industrial furnace tube cutting equipment comprises a furnace tube conveying frame, furnace tube brackets are mounted on the furnace tube conveying frame at intervals, a tube tail positioning device is mounted at one end of the furnace tube conveying frame, and a tube head positioning device is mounted at the other end of the furnace tube conveying frame. The cutting blades on the cutting assemblies are adjusted through the adjusting assemblies, so that the cutting blades always surround the furnace tube to conduct cutting smaller than a half circle, in the surrounding process of the cutting blades, the cutting blades on one cutting assembly can extend to the position between the two side protection plates on the other cutting assembly, and therefore coincident cutting operation can be completed; and the cutting edge can be reversely rotated and adjusted under the adjustment of the adjusting assembly, so that the cutting range of the cutting edge can be greatly reduced, the propelling efficiency of the main control air cylinder is greatly improved, and the cutting efficiency of the furnace tube is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of furnace tube cutting, and specifically to a large-diameter industrial furnace tube cutting device. Background Art

[0002] Large-diameter industrial furnace tube cutting devices are key equipment in the fields of industrial furnace manufacturing and maintenance, mainly used for precise cutting operations of large furnace tubes in industries such as petrochemical and metallurgy. Traditional devices usually consist of a furnace tube transfer rack, a positioning and clamping device, and a cutting mechanism.

[0003] When performing a cutting operation on a furnace tube, the cutting edge usually surrounds the furnace tube to complete the cutting of the furnace tube. During the cutting operation, the cutting edge usually performs a circumferential cutting along the same direction. Usually, a cylinder is also required to push the cutting edge during the cutting operation, so that the cutting edge can penetrate the furnace tube to complete the cutting.

[0004] However, for this circumferential cutting in the same direction, it is necessary to consider its advancement progress. Therefore, it is usually necessary to completely surround the furnace tube for one week before advancing. Otherwise, the cutting edge cannot effectively cut the furnace tube, greatly reducing the cutting efficiency of the furnace tube. Therefore, the present invention provides a large-diameter industrial furnace tube cutting device to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a large-diameter industrial furnace tube cutting device to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A large-diameter industrial furnace tube cutting device includes a furnace tube transfer rack, on which furnace tube brackets are installed at intervals. One end of the furnace tube transfer rack is provided with a tube tail positioning device, and the other end is provided with a tube head positioning device. A cutting rack is installed at one end of the furnace tube transfer rack corresponding to the tube head positioning device, and a moving guide rail is installed on the cutting rack. It is characterized in that: a tube cutting device capable of circular reciprocating cutting of the furnace tube is movably installed on the moving guide rail. The tube cutting device includes a basic component, a cutting component, and an adjustment component capable of driving the cutting component to perform circular reciprocating cutting on the furnace tube. The basic component is movably installed on the moving guide rail, the cutting component is installed on both sides of the basic component, and the two cutting components are arranged in a mirror image. The adjustment component is installed on the basic component and is located on the side far from the tube head positioning device in the middle of the two cutting components. The adjustment component is connected to the two cutting components.

[0007] As a further solution of the present invention, the basic component includes a base, side brackets, a main control cylinder and a support plate. The base is movably installed on the moving guide rail. The side brackets are fixedly installed on both sides of the base. The main control cylinder is installed on the positions corresponding to the cutting components on the sides away from each other of the two groups of side brackets, and the output end of the main control cylinder slidably penetrates through the corresponding wall surfaces of the side brackets and is connected to the cutting component. The support plate is fixedly installed on the side brackets at the positions corresponding to the cutting components, and the adjustment component is installed on the support plate.

[0008] As a further solution of the present invention, the cutting component includes side guard plates, movable grooves, a cutting piece and an auxiliary adjustment shaft rod. There are two groups of side guard plates, and the two groups of side guard plates are arranged at intervals. The cutting piece is arranged between the two groups of side guard plates. The movable groove is opened on the side wall of the side guard plate. The movable groove is an arc-shaped groove and slidably penetrates through the two side walls of the side guard plate. The auxiliary adjustment shaft rod is fixedly installed on the cutting piece, and the end of the auxiliary adjustment shaft rod away from the cutting piece extends into the movable groove. Through the movable grooves on both sides of the cutting piece, the cutting piece is movably installed between the two groups of side guard plates, and the end of the auxiliary adjustment shaft rod away from the cutting piece is movably installed on the adjustment component.

[0009] As a further solution of the present invention, the cutting component further includes an associated plate. The associated plate is fixedly installed at one end of the two groups of side guard plates close to the main control cylinder. The associated plate is in the shape of a "U" plate. The two groups of spaced side guard plates are connected by the "U" end of the associated plate. The end of the associated plate away from the side guard plate is fixedly installed on the output end of the main control cylinder.

[0010] As a further solution of the present invention, the adjustment component includes an adjustment piece and a movable shaft piece. The adjustment piece and the movable shaft piece are both installed on the support plate. One end of the movable shaft piece is movably connected to the cutting component, and the movable shaft piece is movably connected to the adjustment piece. The adjustment pieces on the two groups of adjustment components are arranged oppositely. The adjustment piece on one group of adjustment components is installed at the upper position of the side wall of the support plate, and the adjustment piece on the other group of adjustment components is installed at the lower position of the side wall of the support plate.

[0011] As a further solution of the present invention, the adjustment piece includes a lifting groove, a secondary control cylinder, a fixing plate and a main adjustment shaft rod. The lifting groove is opened on the side wall of the support plate. The secondary control cylinder is installed on the side wall of the support plate. The secondary control cylinder on one group of adjustment components is installed at the upper position of the side wall of the support plate, and the secondary control cylinder on the other group of adjustment components is installed at the lower position of the side wall of the support plate. The fixing plate is arranged at the middle position of the support plate, and the fixing plate is connected to the output end of the secondary control cylinder, and the position of the fixing plate corresponds to the position of the lifting groove. The main adjustment shaft rod is fixedly installed on the side of the fixing plate close to the lifting groove, and the end of the main adjustment shaft rod away from the fixing plate passes through the lifting groove and is connected to the movable shaft piece.

[0012] As a further solution of the present invention, the movable shaft member includes a rotation adjustment plate, a movable shaft, an auxiliary adjustment shaft block, an adjustment groove, a limit groove and a limit plate. The rotation adjustment plate is arranged on the side of the support plate away from the fixed plate. One end of the rotation adjustment plate corresponds to the position of the main adjustment shaft rod on the adjustment member, and the other end of the rotation adjustment plate corresponds to the cutting assembly. The movable shaft is fixedly installed on the side wall of the rotation adjustment plate. The end of the movable shaft away from the rotation adjustment plate slides through the corresponding wall surface of the support plate and is movably installed on the support plate. The adjustment groove is opened on the side wall of the rotation adjustment plate corresponding to the position of the main adjustment shaft rod. The adjustment groove is a strip-shaped groove. The end of the main adjustment shaft rod away from the limit groove extends into the adjustment groove. The auxiliary adjustment shaft block is arranged at the position of the rotation adjustment plate away from the adjustment groove, and the auxiliary adjustment shaft block is movably connected to the cutting assembly. The limit groove is opened on the side wall of the rotation adjustment plate corresponding to the side of the auxiliary adjustment shaft block. The limit plate is arranged in the limit groove. One end of the limit plate close to the auxiliary adjustment shaft block slides through the corresponding wall surface of the rotation adjustment plate and is installed on the side wall of the auxiliary adjustment shaft block. The limit plate can be adjusted to move on the limit groove.

[0013] As a further solution of the present invention, the cutting member includes a main base block, a secondary base block, a cutting edge, an edge adjustment member and a connecting member. The main base block is arranged between the two side protection plates, and the auxiliary adjustment shaft rods are fixedly installed on both sides of the main base block. Through the two auxiliary adjustment shaft rods, the main base block is movably installed in the activity groove between the two side protection plates. The secondary base blocks are arranged at intervals along both ends of the main base block. The cutting edge is installed on the secondary base block and the main base block.

[0014] As a further solution of the present invention, the connecting member is installed between the secondary base block and the main base block and between two adjacent secondary base blocks. Through the connecting member, the secondary base block and the main base block and two adjacent secondary base blocks are movably connected to each other. The edge adjustment member is installed at the position of the main base block corresponding to the associated plate, and the edge adjustment member is located inside the associated plate. Both ends of the edge adjustment member are movably installed on the side wall of the secondary base block farthest from the main base block. Through the edge adjustment member, the secondary base block farthest from the main base block can be driven to be adjusted, and thus the radian of the cutting member can be adjusted.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the present invention is used, the cutting edge on the cutting assembly is adjusted through the adjustment assembly, so that the cutting edge always cuts less than half a circle around the furnace tube. And during the circumferential movement of the cutting edge, the cutting edge on one of the cutting assemblies will extend between the two side protection plates of the other cutting assembly, so that the overlapping cutting operation can be completed. And the cutting edge will be adjusted to rotate in the reverse direction under the adjustment of the adjustment assembly, so that the cutting range that the cutting edge needs to cut can be greatly reduced, the propulsion efficiency of the main control cylinder is greatly increased, and thus the cutting efficiency of the furnace tube is effectively improved; 2. When the present invention is in use, through the main base blocks and secondary base blocks arranged at intervals, during the circumferential cutting operation, the cutting edges on the main base blocks and secondary base blocks will advance separately, and the cutting edges on the two groups of cutting assemblies will perform overlapping cutting operations. Therefore, during the reverse operation, it can effectively avoid the accumulation of waste materials caused by unidirectional circumferential cutting. The main base blocks and secondary base blocks arranged at intervals and the cutting edges that can perform overlapping cutting can effectively push the accumulated waste materials in the reverse direction during the reverse operation, so that the accumulated waste materials can be broken and separated due to the pushing of the cutting edges, greatly reducing the occurrence of insufficient cutting strength of the cutting edges caused by excessive accumulation of waste materials. 3. When the present invention is in use, the telescopic device inside the telescopic equipment box will control the two groups of telescopic rods to perform adaptive adjustment. Under the fixed length of the push adjustment rod and the restriction of the outer wall of the furnace tube, the cutting edges on the main base blocks and some secondary base blocks will be adaptively adjusted and attached to the outer wall of the furnace tube, thus completing the adaptive pipe diameter adjustment and cutting operation. 4. When the present invention is in use, affected by the adjustment of the secondary base blocks, the cutting edges on some secondary base blocks will not be attached to the outer wall of the furnace tube. However, with the advancement control of the main control cylinder, the cutting edges on these secondary base blocks will gradually be attached to the outer wall of the furnace tube, so that during the cutting operation, it can effectively perform pre-cutting operation on the cutting grooves on the outer wall of the furnace tube, forming a sloped cutting condition, which can make it more convenient to cut the furnace tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a large-diameter industrial furnace tube cutting device.

[0017] Figure 2 It is Figure 1 The partial enlarged structure schematic diagram at A in

[0018] Figure 3 It is a schematic diagram of the partial structure of the pipe cutting device in a large-diameter industrial furnace tube cutting device.

[0019] Figure 4 It is a schematic diagram of the partial structure of the adjustment component in a large-diameter industrial furnace tube cutting device.

[0020] Figure 5 It is a schematic diagram of the partial structure of the cutting piece in a large-diameter industrial furnace tube cutting device.

[0021] Figure 6 It is Figure 5 The partial enlarged structure schematic diagram at B in

[0022] Figure 7 It is a schematic diagram of the partial structure of the connecting piece in a large-diameter industrial furnace tube cutting device.

[0023] In the figure: 1. Furnace tube transmission rack; 2. Furnace tube support; 3. Tube tail positioning device; 4. Tube head positioning device; 5. Cutting rack; 6. Moving guide rail; 7. Base; 8. Side support; 9. Main control cylinder; 10. Associated plate; 11. Side guard plate; 12. Support plate; 13. Rotary adjustment plate; 14. Lifting groove; 15. Secondary control cylinder; 16. Fixed plate; 17. Movable shaft; 18. Auxiliary adjustment shaft block; 19. Auxiliary adjustment shaft rod; 20. Main base block; 21. Secondary base block; 22. Push adjustment rod; 23. Movable groove; 24. Adjustment groove; 25. Main adjustment shaft rod; 26. Limit groove; 27. Limit plate; 28. Cutting edge; 29. Telescopic equipment box; 30. Telescopic groove; 31. Telescopic rod; 32. Rotary adjustment groove; 33. Rotary adjustment block; 34. Movable hole; 35. Fixed shaft. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-7 , in the embodiment of the present invention, a large-diameter industrial furnace tube cutting device includes a furnace tube transmission rack 1. Furnace tube supports 2 are installed at intervals on the furnace tube transmission rack 1. The furnace tube can be limited by the furnace tube supports 2 to prevent the furnace tube from falling due to its rolling characteristics after being placed on the furnace tube transmission rack 1. A tube tail positioning device 3 is installed at one end of the furnace tube transmission rack 1. The output end of the tube tail positioning device 3 can internally support the inner wall of the furnace tube in a telescopic and movable manner. The tube tail positioning device 3 is a publicly known technology and will not be elaborated here. Specifically, the tube tail positioning device 3 includes, but is not limited to, a four-jaw chuck internal support device, so as to complete the internal support and fixation of the furnace tube at the tube tail. A tube head positioning device 4 is installed at the other end of the furnace tube transmission rack 1. The output end of the tube head positioning device 4 can clamp the outer wall of the furnace tube in a telescopic and movable manner. The tube head positioning device 4 is a publicly known technology and will not be elaborated here. Specifically, the tube head positioning device 4 includes, but is not limited to, a telescopic hydraulic gripper. The tube tail positioning device 3 and the tube head positioning device 4 can clamp and fix both ends of the furnace tube, and the furnace tube support 2 is located between the tube tail positioning device 3 and the tube head positioning device 4. A cutting rack 5 is installed at the end of the furnace tube transmission rack 1 corresponding to the tube head positioning device 4. A moving guide rail 6 is installed on the cutting rack 5. A pipe cutting device is movably installed on the moving guide rail 6. The pipe cutting device can circularly and reciprocally cut the furnace tube.

[0026] The pipe cutting device includes a base component, a cutting component, and an adjusting component. The base component is movably installed on the moving guide rail 6, and the base component can reciprocally move and adjust on the moving guide rail 6. The cutting components are installed on both sides of the base component, and the two groups of cutting components are arranged in a mirror image. The adjusting component is installed on the base component. There are two groups of adjusting components, and the two groups of adjusting components are respectively installed at the positions corresponding to the cutting components on the base component. By adjusting the operation of the adjusting component, the cutting component can perform a circular reciprocating cutting operation on the furnace pipe.

[0027] The base component includes a base 7, side brackets 8, a main control cylinder 9, and a support plate 12. The base 7 is movably installed on the moving guide rail 6. The side brackets 8 are fixedly installed on both sides of the base 7. The main control cylinder 9 is a publicly known technology and will not be elaborated here. The main control cylinder 9 is installed at the position corresponding to the cutting component on the mutually remote side of the two groups of side brackets 8, and the output end of the main control cylinder 9 slidably penetrates the corresponding wall surface of the side bracket 8 and is connected to the cutting component. Through the main control cylinders 9 on the two groups of side brackets 8, the two groups of cutting components can be controlled to move closer to or away from each other. The support plate 12 is fixedly installed at the position corresponding to the cutting component on the side bracket 8, and the adjusting component is installed on the support plate 12.

[0028] The cutting component includes an associated plate 10, side guard plates 11, an activity groove 23, a cutting piece, and an auxiliary adjustment shaft rod 19. The side guard plates 11 are arc-shaped plates. There are two groups of side guard plates 11, and the two groups of side guard plates 11 are arranged at intervals. The associated plate 10 is fixedly installed at one end of the two groups of side guard plates 11 close to the main control cylinder 9. The associated plate 10 is in the shape of a "U" - shaped plate. The two groups of side guard plates 11 arranged at intervals are connected by the "U" - shaped end of the associated plate 10. One end of the associated plate 10 far from the side guard plate 11 is fixedly installed on the output end of the main control cylinder 9. The cutting piece is arranged between the two groups of side guard plates 11. The activity groove 23 is opened on the side wall of the side guard plate 11. The activity groove 23 is an arc - shaped groove, and the activity groove 23 slidably penetrates the two side walls of the side guard plate 11. The auxiliary adjustment shaft rod 19 is fixedly installed on the cutting piece, and one end of the auxiliary adjustment shaft rod 19 far from the cutting piece extends into the activity groove 23. Through the activity grooves 23 on both sides of the cutting piece, the cutting piece is movably installed between the two groups of side guard plates 11, and one end of the auxiliary adjustment shaft rod 19 far from the cutting piece is movably installed on the adjusting component. Through the adjustment of the adjusting component, the auxiliary adjustment shaft rod 19 makes an activity adjustment in the activity groove 23. Through the arc - shaped activity groove 23, when the auxiliary adjustment shaft rod 19 moves in the activity groove 23, it can drive the cutting piece to perform circular movement, so as to be able to perform circular cutting on the furnace pipe.

[0029] Furthermore, when the cutting pieces on the two groups of cutting components perform circular movement, one end of the cutting piece on one group of cutting components will move between the two groups of side guard plates 11 on the other group of cutting components, so as to effectively complete overlapping cutting and be able to completely cut the furnace pipe.

[0030] The adjustment assembly includes an adjusting member and a movable shaft member. Both the adjusting member and the movable shaft member are installed on the support plate 12. One end of the movable shaft member is movably connected to the cutting assembly. Specifically, one end of the movable shaft member is movably connected to the auxiliary adjustment shaft rod 19. The movable shaft member and the adjusting member are movably connected to each other. The adjusting members on the two adjustment assemblies are arranged oppositely. The adjusting member on one of the adjustment assemblies is installed above the side wall of the support plate 12, and the adjusting member on the other adjustment assembly is installed below the side wall of the support plate 12. The two adjusting members are synchronously adjusted towards the side close to each other.

[0031] The adjusting member includes a lifting groove 14, a secondary control cylinder 15, a fixing plate 16, and a main adjustment shaft rod 25. The lifting groove 14 is opened on the side wall of the support plate 12. The secondary control cylinder 15 is installed on the side wall of the support plate 12. The secondary control cylinder 15 on one of the adjustment assemblies is installed above the side wall of the support plate 12, and the adjustment assembly of the other group is installed below the side wall of the support plate 12. The fixing plate 16 is arranged in the middle of the support plate 12. The fixing plate 16 is connected to the output end of the secondary control cylinder 15, and the position of the fixing plate 16 corresponds to the position of the lifting groove 14. The main adjustment shaft rod 25 is fixedly installed on the side of the fixing plate 16 close to the lifting groove 14. The end of the main adjustment shaft rod 25 away from the fixing plate 16 passes through the lifting groove 14 and is connected to the movable shaft member.

[0032] The movable shaft member includes a rotation adjustment plate 13, a movable shaft 17, an auxiliary adjustment shaft block 18, an adjustment groove 24, a limit groove 26, and a limit plate 27. The rotation adjustment plate 13 is arranged on the side of the support plate 12 away from the fixing plate 16. One end of the rotation adjustment plate 13 corresponds to the position of the main adjustment shaft rod 25 on the adjusting member, and the other end of the rotation adjustment plate 13 corresponds to the cutting assembly. The movable shaft 17 is fixedly installed on the side wall of the rotation adjustment plate 13. The end of the movable shaft 17 away from the rotation adjustment plate 13 slides through the corresponding wall surface of the support plate 12 and is movably installed on the support plate 12. Through the movable shaft 17, the rotation adjustment plate 13 can rotate on the support plate 12 with the rotation adjustment plate 13 as the axis. The adjustment groove 24 is opened on the side wall of the rotation adjustment plate 13 corresponding to the position of the main adjustment shaft rod 25. The adjustment groove 24 is a strip-shaped groove. The end of the main adjustment shaft rod 25 away from the limit groove 26 extends into the adjustment groove 24. The auxiliary adjustment shaft block 18 is arranged at the end of the rotation adjustment plate 13 away from the adjustment groove 24, and the auxiliary adjustment shaft block 18 is movably connected to the cutting assembly. Specifically, the end of the auxiliary adjustment shaft rod 19 away from the cutting member slides through the corresponding wall surface of the auxiliary adjustment shaft block 18 and is movably installed on the auxiliary adjustment shaft block 18. The limit groove 26 is opened on the side wall of the rotation adjustment plate 13 corresponding to the side of the auxiliary adjustment shaft block 18. The limit plate 27 is arranged in the limit groove 26. The end of the limit plate 27 close to the auxiliary adjustment shaft block 18 slides through the corresponding wall surface of the rotation adjustment plate 13 and is installed on the side wall of the auxiliary adjustment shaft block 18. The limit plate 27 can be adjusted to move on the limit groove 26.

[0033] By adjusting the limit groove 26 on the rotation adjustment plate 13 and the limit plate 27 on the auxiliary adjustment shaft block 18, when the auxiliary adjustment shaft rod 19 moves on the movable groove 23, it can drive the auxiliary adjustment shaft block 18 to perform adaptive telescopic adjustment on the rotation adjustment plate 13.

[0034] By starting two groups of secondary control cylinders 15, the fixed plate 16 can perform telescopic adjustment on the support plate 12. That is, one group of fixed plates 16 moves up or down on the support plate 12, and the other group of fixed plates 16 moves down or up on the support plate 12. Thus, through the main adjustment shaft rod 25, the rotation adjustment plate 13 can be driven to rotate around the movable shaft 17 as the axis. Since the moving directions of the two groups of fixed plates 16 are different, different-direction adjustments will occur at the ends of the two groups of rotation adjustment plates 13 far from the fixed plates 16. That is, one group of rotation adjustment plates 13 will drive the auxiliary adjustment shaft block 18 to adjust upward, and the other group of rotation adjustment plates 13 will drive the auxiliary adjustment shaft block 18 to adjust downward. Therefore, the cutting assembly can be driven to perform axial rotation in the same direction.

[0035] The cutting piece includes a main base block 20, a secondary base block 21, a cutting edge 28, a cutting edge adjusting piece and a connecting piece. The main base block 20 is arranged between two groups of side guard plates 11, and the auxiliary adjustment shaft rods 19 are fixedly installed on both sides of the main base block 20. Through the two groups of auxiliary adjustment shaft rods 19, the main base block 20 is movably installed in the movable groove 23 between the two groups of side guard plates 11. The secondary base blocks 21 are arranged at intervals along both ends of the main base block 20. The connecting piece is installed between the secondary base block 21 and the main base block 20 and between two adjacent groups of secondary base blocks 21. Through the connecting piece, the secondary base block 21 and the main base block 20 are movably connected to each other, and the secondary base block 21 can perform rotational adjustment on the main base block 20 and an adjacent group of secondary base blocks 21. The cutting edge 28 is installed on the secondary base block 21 and the main base block 20. By the secondary base block 21 that can perform movable adjustment on the main base block 20, the inner diameter arc size of the cutting piece can be effectively changed, so that furnace tubes of different specifications can be cut. The cutting edge adjusting piece is installed at the position corresponding to the associated plate 10 on the main base block 20, and the cutting edge adjusting piece is located inside the associated plate 10. Both ends of the cutting edge adjusting piece are movably installed on the side wall of the group of secondary base blocks 21 farthest from the main base block 20. Through the cutting edge adjusting piece, the group of secondary base blocks 21 farthest from the main base block 20 can be driven to adjust. Through the movable connection between two adjacent groups of secondary base blocks 21, the remaining secondary base blocks 21 can be driven to perform adaptive adjustment, so that the arc formed by the main base block 20 and the secondary base blocks 21 changes.

[0036] The blade adjusting member includes a pushing and adjusting rod 22, a telescopic equipment box 29, a telescopic groove 30, and a telescopic rod 31. A telescopic device is provided inside the telescopic equipment box 29. The telescopic grooves 30 are opened at the upper and lower ends of the telescopic equipment box 29. The telescopic grooves 30 penetrate through the corresponding position walls of the telescopic equipment box 29 and are interconnected with the inside of the telescopic equipment box 29. The telescopic rod 31 is fixedly installed on the output end of the telescopic device inside the telescopic equipment box 29. One end of the telescopic rod 31 away from the inside of the telescopic equipment box 29 extends outside the telescopic equipment box 29 through the telescopic groove 30. The pushing and adjusting rod 22 is arranged between the telescopic equipment box 29 and the set of secondary base blocks 21 farthest from the main base block 20. Both ends of the pushing and adjusting rod 22 are movably installed on the telescopic groove 30 and the secondary base block 21 respectively. Both ends of the pushing and adjusting rod 22 can be adjusted movably on the telescopic rod 31 and the secondary base block 21.

[0037] The telescopic device inside the telescopic equipment box 29 controls the telescopic adjustment of the telescopic groove 30, so that the telescopic groove 30 drives one end of the pushing and adjusting rod 22 to move adaptively. Due to the fixed length limitation of the pushing and adjusting rod 22, the other end of the pushing and adjusting rod 22 will push or pull the set of secondary base blocks 21 farthest from the main base block 20 to move adaptively, thereby completing the adjustment of the arc formed by the main base block 20 and the secondary base blocks 21.

[0038] By arranging the telescopic equipment box 29 inside the connecting plate 10, the adjustment and cutting operations of the cutting member are not negatively affected by the pushing operation of the main control cylinder 9. At the same time, it can effectively cooperate with the pushing operation of the main control cylinder 9 to complete the cutting operation of the furnace tube.

[0039] The connecting member includes a rotating adjustment groove 32, a rotating adjustment block 33, a moving hole 34, and a fixed shaft 35. The rotating adjustment grooves 32 are opened on the side walls at both ends of the main base block 20 and on the side wall of the secondary base block 21 away from the main base block 20. The rotating adjustment block 33 is fixedly installed on the side wall of the secondary base block 21 close to the main base block 20, and the positions of the rotating adjustment block 33 and the rotating adjustment groove 32 correspond to each other. The moving hole 34 is opened on the side wall of the rotating adjustment block 33 close to the inner side of the rotating adjustment groove 32. The fixed shaft 35 is fixedly installed inside the rotating adjustment groove 32. The rotating adjustment block 33 is movably installed on the moving hole 34 through the fixed shaft 35. The secondary base block 21 can be rotationally adjusted in the rotating adjustment groove 32 on the main base block 20 through the rotating adjustment block 33.

[0040] The working principle of the present invention is: When the present invention is in use, the furnace tube to be cut is placed in the furnace tube bracket 2 on the furnace tube transmission rack 1, and both ends of the furnace tube are fixed by the tube tail positioning device 3 and the tube head positioning device 4. The cutting device is controlled to move to a specified position on the moving guide rail 6. The main control cylinders 9 on the two sets of side brackets 8 are started, and the two sets of cutting assemblies are controlled to move towards the furnace tube side, so that the cutting edges 28 on the cutting assemblies are attached to the side wall of the furnace tube. The secondary control cylinders 15 on the two sets of support plates 12 are started to drive the corresponding fixed plates 16 to perform telescopic movement adjustment respectively. By matching the main adjustment shaft rod 25 in the adjustment groove 24 with the telescopic auxiliary adjustment shaft block 18 and the auxiliary adjustment shaft rod 19 on the cutting piece, the rotation adjustment plate 13 rotates around the movable shaft 17, which can effectively drive the cutting piece to rotate between the two sets of side protection plates 11, and cooperate with the pushing operation of the main control cylinder 9 to effectively cut the furnace tube. At the same time, under the rotation adjustment of the rotation adjustment plate 13, the cutting pieces on the two sets of cutting assemblies will cause one end of one set of cutting pieces to move between the two sets of side protection plates 11 of the other set, so as to effectively complete the overlapping cutting operation and enable the furnace tube to be effectively and completely cut.

[0041] When it is necessary to adjust the cutting according to the diameter of the furnace tube, the telescopic device inside the telescopic equipment box 29 will control the two sets of telescopic rods 31 to perform adaptive adjustment. Under the fixed length of the pushing adjustment rod 22 and the restriction of the outer wall of the furnace tube, the cutting edges 28 on the main base block 20 and part of the secondary base blocks 21 will be adaptively adjusted and attached to the outer wall of the furnace tube, so as to complete the adaptive diameter adjustment cutting operation. At the same time, affected by the adjustment of the secondary base blocks 21, the cutting edges 28 on part of the secondary base blocks 21 will not be attached to the outer wall of the furnace tube. However, with the advancement control of the main control cylinder 9, the cutting edges 28 on this part of the secondary base blocks 21 will gradually be attached to the outer wall of the furnace tube, so as to effectively perform pre-cutting operation on the cutting grooves on the outer wall of the furnace tube during the cutting operation, forming a sloped cutting condition, which is more convenient for cutting the furnace tube.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope described in the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A large-diameter industrial furnace tube cutting device, comprising a furnace tube transmission rack (1), furnace tube brackets (2) are installed at intervals on the furnace tube transmission rack (1), a tube tail positioning device (3) is installed at one end of the furnace tube transmission rack (1), a tube head positioning device (4) is installed at the other end of the furnace tube transmission rack (1), a cutting rack (5) is installed at one end of the furnace tube transmission rack (1) corresponding to the tube head positioning device (4), a moving guide rail (6) is installed on the cutting rack (5), and it is characterized in that: A pipe cutting device capable of circularly reciprocatingly cutting a furnace tube is movably installed on the moving guide rail (6). The pipe cutting device includes a base assembly, a cutting assembly, and an adjusting assembly capable of driving the cutting assembly to circularly reciprocate and cut on the furnace tube. The base assembly is movably installed on the moving guide rail (6). The cutting assembly is installed on both sides of the base assembly, and the two groups of cutting assemblies are arranged in a mirror image. The adjusting assembly is installed on the base assembly and is located on the side away from the pipe head positioning device (4) between the two groups of cutting assemblies. The adjusting assembly is connected to the two groups of cutting assemblies.

2. The large-diameter industrial furnace tube cutting device according to claim 1, wherein: The base assembly includes a base (7), side brackets (8), a main control cylinder (9), and a support plate (12). The base (7) is movably installed on the moving guide rail (6). The side brackets (8) are fixedly installed on both sides of the base (7). The main control cylinder (9) is installed at the position corresponding to the cutting assembly on the side where the two groups of side brackets (8) are away from each other, and the output end of the main control cylinder (9) slidably penetrates through the corresponding wall surface of the side bracket (8) and is connected to the cutting assembly. The support plate (12) is fixedly installed at the position corresponding to the cutting assembly on the side bracket (8). The adjusting assembly is installed on the support plate (12).

3. The large-diameter industrial furnace tube cutting device according to claim 2, wherein: The cutting assembly includes side guard plates (11), an activity groove (23), a cutting piece, and an auxiliary adjustment shaft rod (19). There are two groups of side guard plates (11), and the two groups of side guard plates (11) are arranged at intervals. The cutting piece is arranged between the two groups of side guard plates (11). The activity groove (23) is opened on the side wall of the side guard plate (11). The activity groove (23) is an arc-shaped groove, and the activity groove (23) slidably penetrates through the two side walls of the side guard plate (11). The auxiliary adjustment shaft rod (19) is fixedly installed on the cutting piece, and the end of the auxiliary adjustment shaft rod (19) away from the cutting piece extends into the activity groove (23). Through the activity grooves (23) on both sides of the cutting piece, the cutting piece is movably installed between the two groups of side guard plates (11), and the end of the auxiliary adjustment shaft rod (19) away from the cutting piece is movably installed on the adjusting assembly.

4. The large-diameter industrial furnace tube cutting device according to claim 3, characterized in that: The cutting assembly further includes an associated plate (10). The associated plate (10) is fixedly installed at one end of the two groups of side guard plates (11) close to the main control cylinder (9). The associated plate (10) is in the shape of a "U" plate. The two groups of spaced side guard plates (11) are connected by the "U" end of the associated plate (10). The end of the associated plate (10) away from the side guard plate (11) is fixedly installed on the output end of the main control cylinder (9).

5. The large-diameter industrial furnace tube cutting device according to claim 2, wherein: The adjusting assembly includes an adjusting piece and a movable shaft piece. Both the adjusting piece and the movable shaft piece are installed on the support plate (12). One end of the movable shaft piece is movably connected to the cutting assembly. The movable shaft piece is movably connected to the adjusting piece. The adjusting pieces on the two groups of adjusting assemblies are arranged oppositely. The adjusting piece on one group of adjusting assemblies is installed at the upper position of the side wall of the support plate (12), and the adjusting piece on the other group of adjusting assemblies is installed at the lower position of the side wall of the support plate (12).

6. The large-diameter industrial furnace tube cutting device according to claim 5, characterized in that: The adjusting member includes a lifting groove (14), a secondary control cylinder (15), a fixing plate (16), and a main adjusting shaft rod (25). The lifting groove (14) is formed on the side wall of the support plate (12). The secondary control cylinder (15) is installed on the side wall of the support plate (12). The secondary control cylinder (15) of one set of adjusting components is installed at the upper position on the side wall of the support plate (12), and the secondary control cylinder (15) of the other set of adjusting components is installed at the lower position on the side wall of the support plate (12). The fixing plate (16) is arranged at the middle position of the support plate (12). The fixing plate (16) is connected to the output end of the secondary control cylinder (15), and the position of the fixing plate (16) corresponds to the position of the lifting groove (14). The main adjusting shaft rod (25) is fixedly installed on the side of the fixing plate (16) close to the lifting groove (14). One end of the main adjusting shaft rod (25) away from the fixing plate (16) passes through the lifting groove (14) and is connected to the movable shaft member.

7. An industrial furnace pipe cutting device with a large caliber according to claim 6, characterized in that: The movable shaft member includes a rotation adjusting plate (13), a movable shaft (17), an auxiliary adjusting shaft block (18), an adjusting groove (24), a limiting groove (26), and a limiting plate (27). The rotation adjusting plate (13) is arranged on the side of the support plate (12) away from the fixing plate (16). One end of the rotation adjusting plate (13) corresponds to the position of the main adjusting shaft rod (25) on the adjusting member, and the other end of the rotation adjusting plate (13) corresponds to the cutting assembly. The movable shaft (17) is fixedly installed on the side wall of the rotation adjusting plate (13). One end of the movable shaft (17) away from the rotation adjusting plate (13) slides through the corresponding wall surface of the support plate (12) and is movably installed on the support plate (12). The adjusting groove (24) is formed on the side wall of the rotation adjusting plate (13) corresponding to the position of the main adjusting shaft rod (25). The adjusting groove (24) is a strip-shaped groove. One end of the main adjusting shaft rod (25) away from the limiting groove (26) extends into the adjusting groove (24). The auxiliary adjusting shaft block (18) is arranged at the position of the rotation adjusting plate (13) away from the adjusting groove (24), and the auxiliary adjusting shaft block (18) is movably connected to the cutting assembly. The limiting groove (26) is formed on the side wall inside the rotation adjusting plate (13) corresponding to the side of the auxiliary adjusting shaft block (18). The limiting plate (27) is arranged in the limiting groove (26). One end of the limiting plate (27) close to the auxiliary adjusting shaft block (18) slides through the corresponding wall surface of the rotation adjusting plate (13) and is installed on the side wall of the auxiliary adjusting shaft block (18). The limiting plate (27) can be adjusted to move on the limiting groove (26).

8. The large-diameter industrial furnace tube cutting device according to claim 3, characterized in that: The cutting member includes a main base block (20), a secondary base block (21), a cutting edge (28), a cutting edge adjusting member, and a connecting member. The main base block (20) is arranged between the two side guard plates (11). The auxiliary adjusting shaft rods (19) are fixedly installed on both sides of the main base block (20). Through the two auxiliary adjusting shaft rods (19), the main base block (20) is movably installed in the movable groove (23) between the two side guard plates (11). The secondary base blocks (21) are arranged at intervals along both ends of the main base block (20). The cutting edge (28) is installed on the secondary base block (21) and the main base block (20).

9. The large-diameter industrial furnace tube cutting device according to claim 8, characterized in that: The connecting member is installed between the secondary base block (21), the primary base block (20) and two adjacent sets of secondary base blocks (21). Through the connecting member, the secondary base block (21), the primary base block (20) and two adjacent sets of secondary base blocks (21) are movably connected to each other. The cutting edge adjusting member is installed on the primary base block (20) at a position corresponding to the associated plate (10), and the cutting edge adjusting member is located inside the associated plate (10). Both ends of the cutting edge adjusting member are movably installed on the side wall of the set of secondary base blocks (21) that is farthest from the primary base block (20). Through the cutting edge adjusting member, the set of secondary base blocks (21) that is farthest from the primary base block (20) can be driven to be adjusted, and thus the arc of the cutting member can be adjusted.

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