CN216421237U

CN216421237U - Large-scale industry steel pipe cutting device

Info

Publication number: CN216421237U
Application number: CN202121642946.XU
Authority: CN
Inventors: 张冠军
Original assignee: Hubei Yufeng Steel Structure Co ltd
Current assignee: Hubei Yufeng Steel Structure Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-05-03
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a large-scale industrial steel pipe cutting device which comprises a support, wherein a vertical plate is fixedly connected to one side of the top surface of the support. Through the third motor, first electric telescopic handle, under the cooperation of first splint and second splint is used, effectually press from both sides steel pipe one end tight fixedly, and the other end of steel pipe passes through the effectual supporting role that plays of tray, rethread first electric telescopic handle function, can realize the position of adjusting the cutting knife according to the size of steel pipe diameter, then start first motor function, at first helical gear, the second belt, second belt and third belt pulley's setting down, make the pivot, rotary rod and first threaded rod rotate in step, make the cutting knife slope of a plurality of size differences remove the steel pipe of rotation in proper order and cut, so the cutting knife of a plurality of size differences of accessible deepens gradually and cuts the steel pipe, can effectually cut large-scale industry steel pipe, can effectually improve the life of cutting knife again.

Description

Large-scale industry steel pipe cutting device

Technical Field

The utility model relates to the technical field of industrial steel pipes, in particular to a large-scale industrial steel pipe cutting device.

Background

The steel pipe is a hollow long-strip round steel material, and is mainly widely used for industrial conveying pipelines, mechanical structural parts and the like in petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments and the like. The industrial steel pipe is generally long in length, so that the industrial steel pipe needs to be cut into two parts. Because the industry steel pipe is thicker, so it is very inconvenient when the cutting, moreover during the cutting, if only cut with a cutting knife, lead to the cutting knife to damage very easily, and then need operate repeatedly and replace the cutting knife, wasted a large amount of operating time, and then lead to the result of use to descend.

SUMMERY OF THE UTILITY MODEL

In order to solve the existing problems, the utility model provides a large-scale industrial steel pipe cutting device.

The utility model is realized by the following technical scheme:

a large-scale industrial steel pipe cutting device comprises a support, wherein a vertical plate is fixedly connected to one side of the top surface of the support, a second fixing plate is fixedly connected to the other side of the top surface of the support, a second supporting plate is fixedly connected to the top end of one side of the second fixing plate, a rotary rod is rotatably connected to the second fixing plate, two lantern rings are sleeved on the rotary rod and fixedly connected with the rotary rod, the two lantern rings on the rotary rod are respectively connected with two sides of the second fixing plate in an attaching mode, a second belt pulley is sleeved on the rotary rod on one side of the second fixing plate and fixedly connected with the rotary rod, a disc is fixedly connected to one end of the rotary rod, the bottom end of the disc is connected with the top surface of the support in an attaching mode, an arc groove is formed in the top surface of the support, the disc is arranged in the arc groove, and two second electric telescopic rods are fixedly connected to the top surface of the support on one side of the disc, the extension ends of the two second electric telescopic rods are fixedly connected with the same tray, the disc is rotatably connected with a second threaded rod, the second threaded rod is fixedly connected with two third retaining rings, the two third retaining rings are respectively attached to two sides of the disc, one of the third retaining rings is arranged in the rotary rod, a third motor is fixedly connected in the rotary rod, the output end of the third motor is fixedly connected with one end of the second threaded rod, the second threaded rod is sleeved with a threaded block and is in threaded connection with the threaded block, four sides of the threaded block are all in hinged connection with a swing rod, one end of the swing rod is in hinged connection with a second clamping plate, one side of the outer arc surface of the second clamping plate is fixedly connected with an L-shaped plate, one side of the L-shaped plate is fixedly connected with an electric telescopic rod, the extension end of the electric telescopic rod is fixedly connected with a first clamping plate, and the first clamping plate and the second clamping plate are arranged in a one-to-one correspondence manner, a T-shaped chute is arranged on the disc on one side of each L-shaped plate, a T-shaped sliding block is arranged in each T-shaped chute and is in sliding connection with the T-shaped chute in a fitting manner, the T-shaped sliding block extends out of the T-shaped chute and is fixedly connected with one side of each L-shaped plate, a rotating shaft is connected on each vertical plate in a rotating manner, two sleeves are fixedly connected on each rotating shaft and are respectively in fitting connection with two sides of each vertical plate, a third belt pulley is fixedly connected on the rotating shaft on one side of each vertical plate, the third belt pulley is in transmission connection with a second belt pulley through a second belt, a second helical gear is fixedly connected at one end of each rotating shaft, a first supporting plate is fixedly connected on the top surface of a support on one side of each vertical plate, a first threaded rod is arranged between the first supporting plate and the second supporting plate, the first threaded rod is arranged in an inclined manner, and the top end of the first threaded rod penetrates through the second supporting plate and is in rotating connection with the second supporting plate in a fitting manner, the two sides of the second supporting plate are respectively connected with a second retaining ring in a laminating manner, the second retaining ring is sleeved on and fixedly connected with the first threaded rod, the bottom end of the first threaded rod penetrates through the first supporting plate and is in laminating and rotating connection with the first supporting plate, the two sides of the first supporting plate are respectively connected with a first retaining ring in a laminating manner, the first retaining ring is sleeved on and fixedly connected with the first threaded rod, a first helical gear is sleeved on and fixedly connected with the first threaded rod, the first helical gear is meshed with the second helical gear, one side of the first supporting plate is fixedly connected with a first fixing plate, one side of the first fixing plate is fixedly connected with a first motor, the output end of the first motor is fixedly connected with one end of the first threaded rod, a threaded cylinder is sleeved on the first threaded rod and is in threaded connection with the first threaded rod, and one side of the threaded cylinder is fixedly connected with two first electric telescopic rods, the extension ends of the two first electric telescopic rods are fixedly connected with the same connecting plate, the connecting plate is obliquely arranged, the oblique bottom surface of the connecting plate is fixedly connected with a plurality of mounting plates, every two mounting plates are symmetrically arranged in a group, a cutting knife is arranged between two opposite mounting plates in each group, two sides of the cutting knife are connected with two mounting plates in the same group in an attaching way, two sides of the cutting knife are fixedly connected with a rotating shaft, the rotating shaft penetrates through a corresponding mounting plate to be connected in an attaching way in a rotating way, the rotating shafts on two sides of the middle cutting knife are fixedly connected with first belt pulleys, one rotating shaft on one side of the other cutting knife is fixedly connected with a first belt pulley, two first belt pulleys on the middle cutting knife are respectively connected with the first belt pulleys on the two side cutting knives through first belt transmission, one side of one mounting plate is fixedly connected with a second motor, the output end of the second motor is fixedly connected with one of the rotating shafts, a guide rod is arranged between the first bevel gear and the second supporting plate and is arranged on one side of the first threaded rod, one end of the guide rod is fixedly connected with one side of the second supporting plate, the guide rod on one side of the second supporting plate penetrates through the threaded cylinder, and the threaded cylinder is in sliding connection with the guide rod in a fitting manner.

Preferably, the first motor, the second motor, the third motor, the first electric telescopic rod and the second electric telescopic rod are all electrically connected with an external power supply.

Preferably, the anti-slip rubber layer is fixedly connected to one side, opposite to the second clamping plate, of the first clamping plate.

Preferably, the minimum diameter of the first helical gear is greater than the maximum diameter of the second helical gear by 10 cm to 20 cm.

Compared with the prior art, the utility model has the beneficial effects that: through the cooperation of the third motor, the second threaded rod, the threaded block, the swinging rod, the first electric telescopic rod, the first clamping plate and the second clamping plate, one end of the steel pipe is effectively clamped and fixed, the other end of the steel pipe effectively plays a supporting role through the tray, the position of the cutting knife can be adjusted according to the diameter of the steel pipe through the operation of the first electric telescopic rod, the cutting knife can conveniently cut the steel pipe, then the first motor is started to operate, under the arrangement of the first helical gear, the second belt pulley and the third belt pulley, the rotating shaft, the rotating rod and the first threaded rod synchronously rotate, a plurality of cutting knives with different sizes are enabled to obliquely move to sequentially cut the rotating steel pipe at the moment, the speed of rotating the steel pipe for one whole circle is greater than the moving speed of the cutting knife at the moment, so that the steel pipe can be cut through the gradual deepening of the plurality of cutting knives with different sizes, can effectively cut the large-scale industrial steel pipe and can effectively prolong the service life of the cutting knife.

Drawings

FIG. 1 is a schematic representation of the structure of the present invention;

FIG. 2 is a partial schematic view of FIG. 1 illustrating the present invention;

in the figure: the support comprises a support 1, a vertical plate 2, a first support plate 3, a first fixing plate 4, a first motor 5, a first retainer ring 6, a first helical gear 7, a second helical gear 8, a rotating shaft 9, a first electric telescopic rod 10, a threaded cylinder 11, a mounting plate 12, a connecting plate 13, a second motor 14, a first belt pulley 15, a cutting knife 16, a first belt 17, a first threaded rod 18, a second fixing plate 19, a second support plate 20, a second retainer ring 21, a T-shaped chute 22, an L-shaped plate 23, an electric telescopic rod 24, a first clamping plate 25, a second clamping plate 26, a swinging rod 27, a threaded block 28, a second threaded rod 29, a second belt 30, a second belt pulley 31, a third motor 32, a tray 33, a second electric telescopic rod 34, a third belt pulley 35, a disc 36, a rotating rod 37, a third retainer ring 38 and a rotating shaft 39.

Detailed Description

The utility model is described in further detail below with reference to the following detailed description and accompanying drawings:

as shown in fig. 1 and 2, a large-scale industrial steel pipe cutting device comprises a support 1, a vertical plate 2 is fixedly connected to one side of the top surface of the support 1, a second fixing plate 19 is fixedly connected to the other side of the top surface of the support 1, a second supporting plate 20 is fixedly connected to the top end of one side of the second fixing plate 19, a rotating rod 37 is rotatably connected to the second fixing plate 19, two lantern rings are sleeved on the rotating rod 37 and fixedly connected to the rotating rod 37, the two lantern rings on the rotating rod 37 are respectively attached to two sides of the second fixing plate 19, a second belt pulley 31 is sleeved on the rotating rod 37 on one side of the second fixing plate 19, the second belt pulley 31 is fixedly connected to the rotating rod 37, a circular disk 36 is fixedly connected to one end of the rotating rod 37, the bottom end of the circular disk 36 is attached to the top surface of the support 1, an arc groove is formed in the top surface of the support 1, and the circular disk 36 is arranged in the arc groove, the top surface of the support 1 on one side of the disc 36 is fixedly connected with two second electric telescopic rods 34, the extending ends of the two second electric telescopic rods 34 are fixedly connected with the same tray 33, the disc 36 is rotatably connected with a second threaded rod 29, the second threaded rod 29 is fixedly connected with two third retaining rings 38, the two third retaining rings 38 are respectively connected with two sides of the disc 36 in a laminating manner, one of the third retaining rings 38 is arranged in the rotating rod 37, the rotating rod 37 is fixedly connected with a third motor 32, the output end of the third motor 32 is fixedly connected with one end of the second threaded rod 29, the second threaded rod 29 is sleeved with a threaded block 28 and is in threaded connection with the threaded block, four sides of the threaded block 28 are respectively and hingedly connected with a swing rod 27, one end of the swing rod 27 is hinged with a second clamping plate 26, one side of the extrados surface of the second clamping plate 26 is fixedly connected with an L23, one side of the L-shaped plate 23 is fixedly connected with an electric telescopic rod 24, the extension end of the electric telescopic rod 24 is fixedly connected with a first clamping plate 25, the first clamping plate 25 and a second clamping plate 26 are arranged in a one-to-one correspondence manner, a T-shaped chute 22 is arranged on a disc 36 on one side of each L-shaped plate 23, a T-shaped sliding block is arranged in the T-shaped chute 22 and is in fit sliding connection with the T-shaped sliding block, the T-shaped sliding block extends out of the T-shaped chute 22 and is fixedly connected with one side of the L-shaped plate 23, a rotating shaft 9 is rotatably connected with the vertical plate 2, two sleeves are fixedly connected with the rotating shaft 9 and are respectively in fit connection with two sides of the vertical plate 2, a third belt pulley 35 is fixedly connected with the rotating shaft 9 on one side of the vertical plate 2, the third belt pulley 35 is in transmission connection with a second belt pulley 31 through a second belt 30, one end of the rotating shaft 9 is fixedly connected with a second helical gear 8, the top surface of the support 1 on one side of the vertical plate 2 is fixedly connected with a first supporting plate 3, a first threaded rod 18 is arranged between the first supporting plate 3 and a second supporting plate 20, the first threaded rod 18 is obliquely arranged, the top end of the first threaded rod 18 passes through the second supporting plate 20 and is in fit rotary connection with the second supporting plate, the two sides of the second supporting plate 20 are in fit connection with second check rings 21, the second check rings 21 are sleeved on the first threaded rod 18 and are fixedly connected with the first threaded rod 18, the bottom end of the first threaded rod 18 passes through the first supporting plate 3 and is in fit rotary connection with the first supporting plate, the two sides of the first supporting plate 3 are in fit connection with first check rings 6, the first check rings 6 are sleeved on the first threaded rod 18 and are fixedly connected with the first threaded rod 18, the first threaded rod 18 is sleeved with a first helical gear 7 and is fixedly connected with the first helical gear 7, and the second helical gear 8 are in mesh connection, a first fixing plate 4 is fixedly connected to one side of the first supporting plate 3, a first motor 5 is fixedly connected to one side of the first fixing plate 4, the output end of the first motor 5 is fixedly connected with one end of a first threaded rod 18, a threaded cylinder 11 is sleeved on the first threaded rod 18 and is in threaded connection with the first threaded rod, two first electric telescopic rods 10 are fixedly connected to one side of the threaded cylinder 11, the extending ends of the two first electric telescopic rods 10 are fixedly connected with a same connecting plate 13, the connecting plate 13 is obliquely arranged, a plurality of mounting plates 12 are fixedly connected to the oblique bottom surface of the connecting plate 13, each two mounting plates 12 are symmetrically arranged in a group, a cutting knife 16 is arranged between two opposite mounting plates 12 in each group, two sides of the cutting knife 16 are attached to the two mounting plates 12 in the same group, and a rotating shaft 39 is fixedly connected to two sides of the cutting knife 16, the rotating shaft 39 passes through one corresponding mounting plate 12 to be jointed and rotationally connected, the rotating shafts 39 on both sides of the middle cutting knife 16 are fixedly connected with first belt pulleys 15, a first belt pulley 15 is fixedly connected on a rotating shaft 39 on one side of the other cutting knives 16, two first belt pulleys 15 on the middle cutting knife 16 are respectively connected with the first belt pulleys 15 on the cutting knives 16 on the two sides in a transmission way through a first belt 17, one side of one of the mounting plates 12 is fixedly connected with a second motor 14, the output end of the second motor 14 is fixedly connected with one of the rotating shafts 39, a guide rod is arranged between the first bevel gear 7 and the second supporting plate 20, and a guide rod is arranged at one side of the first threaded rod 18, one end of the guide rod is fixedly connected with one side of the second supporting plate 20, the guide rod on one side of the second support plate 20 penetrates through the threaded cylinder 11, and the threaded cylinder 11 is attached to the guide rod in a sliding connection mode.

The first motor 5, the second motor 14, the third motor 32, the first electric telescopic rod 10 and the second electric telescopic rod 34 are all electrically connected with an external power supply.

The anti-slip rubber layer is fixedly connected to one side of the first clamping plate 25 opposite to the second clamping plate 26.

The minimum diameter of the first helical gear 7 is larger than the maximum diameter of the second helical gear 8 by 10 cm-20 cm.

The working principle is as follows: the utility model is used for cutting large-scale industrial steel pipes, when cutting, firstly, the steel pipe is placed on a tray 33, a second electric telescopic rod 34 is started to operate, so that an extension end pushes the tray 33 to be lifted, and further, the steel pipe is lifted to the right side of a disc 36, then a third motor 32 is started to operate, so that an output end drives a second threaded rod 29 to rotate, and further, a threaded block 28 which is in threaded connection with the second threaded rod 29 moves, and further, a plurality of swinging rods 27 which are hinged and connected with the threaded block 28 deflect, in the process of deflecting the swinging rods 27, a second clamping plate 26 and an L-shaped plate 23 move towards the edge of the disc 36 under the arrangement of a T-shaped sliding groove 22 and a T-shaped sliding block, until a cavity between the first clamping plate 25 and the second clamping plate 26 is opposite to the side wall of the steel pipe, the third motor 32 stops operating, then a worker pushes one end of the steel pipe to enable the steel pipe to slide on the tray 33, sleeving the other end of the steel pipe on the plurality of second clamping plates 26, then starting the third motor 32 again to operate, enabling the second clamping plates 26 to move towards the edges of the circular discs 36 again by the same principle, further enabling the outer arc surfaces of the second clamping plates 26 to effectively and closely contact with the inner side walls of the steel pipe to stop the operation of the third motor 32, then starting the electric telescopic rod 24 to operate, enabling the extension ends to push the first clamping plates 25 to move towards the outer side walls of the steel pipe until the first clamping plates 25 and the outer side walls of the steel pipe closely contact to stop the operation of the electric telescopic rod 24, at the moment, through the arrangement of the plurality of first clamping plates 25 and the plurality of second clamping plates 26, one end of the steel pipe can be effectively clamped and fixed, the other end of the steel pipe can effectively play a supporting role through the tray 33, after the steel pipe is fixed, the first electric telescopic rod 10 operates to enable the extension ends to push the mounting plates 12 and the connecting plates 13 to move towards the direction of the steel pipe, therefore, the position of the cutting knife 16 can be adjusted according to the diameter of the steel pipe, and the cutting knife 16 can conveniently cut the steel pipe; then the first motor 5 is started to operate, so that the output end drives the first threaded rod 18 to rotate, in the process of rotating the first threaded rod 18, the rotating shaft 9 is enabled to rotate by meshing the first helical gear 7 and the second helical gear 8, in addition, because the minimum diameter of the first helical gear 7 is greater than the maximum diameter of the second helical gear 8 by 10 cm-20 cm, the rotating speed of the rotating shaft 9 is three times of the rotating speed of the first threaded rod 18, in the process of rotating the rotating shaft 9, under the transmission connection of the second belt 30, the second belt pulley 31 and the third belt pulley 35, the rotating rod 37 is enabled to synchronously rotate, further, the rotating rod 37 drives the disc 36 and the steel pipe fixed on one side of the disc 36 to synchronously rotate, and when the steel pipe rotates, the second motor 14 is started to operate, so that the plurality of cutting knives 16 are synchronously rotated under the transmission connection of the first belt pulley 15 and the first belt 17, meanwhile, make a thread section of thick bamboo 11 of going up threaded connection to take place to remove under the direction of guide bar through the rotation of first threaded rod 18, and then make a thread section of thick bamboo 11 drive first electric telescopic handle 10, mounting panel 12, connecting plate 13 and cutting knife 16 synchronous motion, at the in-process of cutting knife 16 inclined movement this moment, cutting knife 16 through a plurality of variation in size is in proper order to the steel pipe of rotation cutting, the speed that the steel pipe rotated a whole circle this moment is greater than the speed that cutting knife 16 removed, so cutting knife 16 of a plurality of variation in size of accessible deepens gradually and cuts the steel pipe, can effectually cut large-scale industry steel pipe open, can effectually improve the life of cutting knife again.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a large-scale industry steel pipe cutting device, includes support (1), its characterized in that: the top surface of support (1) one side fixedly connected with riser (2), the top surface opposite side fixedly connected with second fixed plate (19) of support (1), second fixed plate (19) one side top fixedly connected with second backup pad (20), swivelling joint has rotary rod (37) on second fixed plate (19), the cover has two lantern rings and rather than fixed connection on rotary rod (37), two lantern rings on rotary rod (37) are laminated with the both sides of second fixed plate (19) respectively and are connected, the cover has second belt pulley (31) on rotary rod (37) of second fixed plate (19) one side, second belt pulley (31) and rotary rod (37) fixed connection, the one end fixedly connected with disc (36) of rotary rod (37), the bottom and the support (1) top surface laminating of disc (36) are connected, the top surface of support (1) is equipped with the arc groove, the disc (36) is arranged in an arc groove of the disc, the top surface of the support (1) on one side of the disc (36) is fixedly connected with two second electric telescopic rods (34), the extending ends of the two second electric telescopic rods (34) are fixedly connected with the same tray (33), the disc (36) is rotatably connected with a second threaded rod (29), the second threaded rod (29) is fixedly connected with two third check rings (38), the two third check rings (38) are respectively attached to two sides of the disc (36), one of the third check rings (38) is arranged in a rotating rod (37), a third motor (32) is fixedly connected in the rotating rod (37), the output end of the third motor (32) is fixedly connected with one end of the second threaded rod (29), a thread block (28) is sleeved on the second threaded rod (29) and is in threaded connection with the second threaded rod, and a swing rod (27) is hinged to four sides of the thread block (28), one end of the swing rod (27) is hinged to a second clamping plate (26), one side of the outer arc surface of the second clamping plate (26) is fixedly connected with an L-shaped plate (23), one side of the L-shaped plate (23) is fixedly connected with an electric telescopic rod (24), the extending end of the electric telescopic rod (24) is fixedly connected with a first clamping plate (25), the first clamping plate (25) and the second clamping plate (26) are arranged in a one-to-one correspondence mode, a T-shaped sliding groove (22) is arranged on a disc (36) on one side of each L-shaped plate (23), a T-shaped sliding block is arranged in each T-shaped sliding groove (22) and is in sliding connection with the T-shaped sliding block in a laminating mode, the T-shaped sliding block extends out of each T-shaped sliding groove (22) and is fixedly connected with one side of the L-shaped plate (23), a rotating shaft (9) is rotationally connected with the vertical plate (2), two sleeves are fixedly connected with the rotating shaft (9), and are respectively in laminating mode with two sides of the vertical plate (2), a third belt pulley (35) is fixedly connected to a rotating shaft (9) on one side of the vertical plate (2), the third belt pulley (35) is in transmission connection with a second belt pulley (31) through a second belt (30), a second bevel gear (8) is fixedly connected to one end of the rotating shaft (9), a first supporting plate (3) is fixedly connected to the top surface of a support (1) on one side of the vertical plate (2), a first threaded rod (18) is arranged between the first supporting plate (3) and the second supporting plate (20), the first threaded rod (18) is obliquely arranged, the top end of the first threaded rod (18) penetrates through the second supporting plate (20) and is in laminating rotary connection with the second supporting plate, second check rings (21) are attached to two sides of the second supporting plate (20), the second check rings (21) are sleeved on the first threaded rod (18) and are fixedly connected with the first threaded rod, the bottom end of the first threaded rod (18) penetrates through the first supporting plate (3) and is in laminating rotary connection with the first supporting plate, the two sides of the first supporting plate (3) are respectively connected with a first check ring (6) in a laminating manner, the first check ring (6) is sleeved on a first threaded rod (18) and fixedly connected with the first threaded rod, a first helical gear (7) is sleeved on the first threaded rod (18) and fixedly connected with the first threaded rod, the first helical gear (7) is meshed with a second helical gear (8) and connected with the second helical gear, one side of the first supporting plate (3) is fixedly connected with a first fixing plate (4), one side of the first fixing plate (4) is fixedly connected with a first motor (5), the output end of the first motor (5) is fixedly connected with one end of the first threaded rod (18), a threaded cylinder (11) is sleeved on the first threaded rod (18) and connected with the first threaded cylinder in a threaded manner, two first electric telescopic rods (10) are fixedly connected with one side of the threaded cylinder (11), and the extension ends of the two first electric telescopic rods (10) are fixedly connected with a same connecting plate (13), connecting plate (13) slope sets up, a plurality of mounting panel (12) of oblique bottom surface fixedly connected with of connecting plate (13), every two of a plurality of mounting panel (12) set up for a set of symmetry, all are equipped with one cutting knife (16) between relative two mounting panel (12) in every group, the both sides of cutting knife (16) are connected with laminating with two mounting panel (12) of same group, equal fixedly connected with a rotation axis (39) in both sides of cutting knife (16), rotation axis (39) pass rather than corresponding mounting panel (12) laminating swivelling joint, equal fixedly connected with first belt pulley (15) on rotation axis (39) of middle part cutting knife (16) both sides, on a rotation axis (39) of all the other cutting knife (16) one side fixedly connected with first belt pulley (15), two first belt pulley (15) are gone up in middle part cutting knife (16) respectively with first belt pulley (15) on both sides (16) through first belt (17) transmission The connection, one side of one of the mounting plates (12) is fixedly connected with a second motor (14), the output end of the second motor (14) is fixedly connected with one of the rotating shafts (39), a guide rod is arranged between the first bevel gear (7) and the second support plate (20) and is arranged on one side of the first threaded rod (18), one end of the guide rod is fixedly connected with one side of the second support plate (20), the guide rod on one side of the second support plate (20) penetrates through the threaded cylinder (11), and the threaded cylinder (11) is in fit sliding connection with the guide rod.

2. The large-scale industrial steel pipe cutting device according to claim 1, wherein: the first motor (5), the second motor (14), the third motor (32), the first electric telescopic rod (10) and the second electric telescopic rod (34) are all electrically connected with an external power supply.

3. The large-scale industrial steel pipe cutting device according to claim 1, wherein: and the opposite sides of the first clamping plate (25) and the second clamping plate (26) are fixedly connected with anti-slip rubber layers.

4. The large-scale industrial steel pipe cutting device according to claim 1, wherein: the minimum diameter of the first helical gear (7) is greater than the maximum diameter of the second helical gear (8) by 10 cm-20 cm.