CN216126622U - Large-scale steel pipe cutting device of efficient - Google Patents

Abstract

The utility model discloses an efficient large-scale steel pipe cutting device which comprises a bottom plate, wherein four corners of the bottom surface of the bottom plate are fixedly connected with a supporting rod, and the four supporting rods are arranged in a pairwise symmetry mode. Through the third motor, third electric telescopic handle, L type splint, the second threaded rod, third T type slider and movable plate cooperation are used, effectually press from both sides the steel pipe tight fixedly, rethread first electric telescopic handle, the sleeve, the montant, first threaded rod, the cooperation in first T type piece and first T type groove is used, the regulation of effectual realization cutter position, the steel pipe of the difference of thickness of convenient cutting like this, then through first motor, second motor and two fourth motor function, make a plurality of cutter limit rotation limit turnover, and the steel pipe is also rotatory in step, the speed of the rotatory a week of steel pipe is twice of the rotatory a week speed of disc this moment, when the steel pipe is rotatory like this, cut the steel pipe in proper order through the cutting knife rotation of a plurality of variation in size.

Description

Large-scale steel pipe cutting device of efficient

Technical Field

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

The utility model is realized by the following technical scheme:

an efficient large-scale steel pipe cutting device comprises a bottom plate, wherein four corners of the bottom surface of the bottom plate are fixedly connected with a supporting rod, the four supporting rods are symmetrically arranged in pairs, one side of the top surface of the bottom plate is provided with two second electric telescopic rods, the top surfaces of the extension ends of the two second electric telescopic rods are fixedly connected with the same tray, the top surface of the bottom plate between the two second electric telescopic rods is provided with a third T-shaped sliding groove, two third T-shaped sliding blocks are symmetrically arranged in the third T-shaped sliding groove and are in fit sliding connection with the third T-shaped sliding groove, the top surfaces of the third T-shaped sliding blocks extend out of the third T-shaped sliding groove and are in fit sliding connection with the third T-shaped sliding groove, the top surfaces of the two third T-shaped sliding blocks outside the third T-shaped sliding groove are fixedly connected with one moving plate, the tray is arranged in the middle parts of the two moving plates, a second threaded rod is arranged in the third T-shaped sliding groove, and two ends of the second threaded rod penetrate through the side wall of the bottom plate and are in fit rotating connection with the moving plate, the two sides of the bottom plate are respectively jointed and connected with lantern rings, the two lantern rings are respectively sleeved on the two ends of the second threaded rod and fixedly connected with the second threaded rod, the two third T-shaped sliding blocks are respectively sleeved on the second threaded rod and connected with the second threaded rod in a threaded manner, one side of the bottom plate is fixedly connected with a first supporting plate, the top surface of the first supporting plate is fixedly connected with a third motor, the output end of the third motor is fixedly connected with one end of the second threaded rod, the two moving plates are respectively jointed and rotatably connected with a round rod, each round rod is sleeved with two first baffle rings and fixedly connected with the first baffle rings, the two first baffle rings are respectively jointed and connected with the two sides of the moving plates, the opposite sides of the two moving plates are respectively and fixedly connected with a second supporting plate, the top surface of the second supporting plate is fixedly connected with a fourth motor, and the output ends of the two fourth motors are respectively and fixedly connected with one ends of the two round rods, four third electric telescopic rods are fixedly connected to two round rods on the opposite sides of the two movable plates, the four third electric telescopic rods on each round rod are arranged in an annular equal distance mode, an L-shaped clamp plate is fixedly connected to the extending ends of the round rods, a second T-shaped chute is arranged on the top surface of the bottom plate, a second T-shaped sliding block is arranged in the second T-shaped chute and is in sliding connection with the second T-shaped sliding block in a fit mode, a vertical rod is fixedly connected to the top surface of the second T-shaped sliding block, the top surface of the second T-shaped sliding block extends out of the second T-shaped chute in a fit mode, a sleeve is sleeved on the vertical rod and is in sliding connection with the vertical rod in a fit mode, a vertical plate is arranged on one side of the sleeve, the bottom surface of the vertical plate is fixedly connected with the top surface of the bottom plate, a first T-shaped groove is arranged on one side of the bottom plate, a first T-shaped block is arranged in the first T-shaped groove in a fit mode, and is fixedly connected with a first electric telescopic rod, the extension end of the first electric telescopic rod is fixedly connected with one side of the sleeve, the top surface of one side of the vertical plate is fixedly connected with a fixed block, the fixed block is rotatably connected with a first threaded rod, the top end of the first threaded rod is fixedly connected with two second check rings, the two second check rings are respectively attached to the top surface and the bottom surface of the fixed block, the bottom surface of the first threaded rod sequentially passes through the first T-shaped block and the bottom plate, the first threaded rod is in threaded connection with the first T-shaped block, the first threaded rod is attached to the bottom plate and is rotatably connected with the bottom plate, the bottom end of the first threaded rod is fixedly connected with two first check rings, the two first check rings are respectively attached to the top surface and the bottom surface of the bottom plate, the bottom surface of the first threaded rod is fixedly connected with a handle, the top end of the sleeve is attached to a rotary rod, and the rotary rod is fixedly connected with two second check rings, two second retaining rings are respectively connected with two sides of the sleeve in an attaching manner, a fixed plate is fixedly connected with one side of the sleeve, a first motor is fixedly connected with the top surface of the fixed plate, the output end of the first motor is fixedly connected with one end of a rotary rod, the other end of the rotary rod is fixedly connected with a disc, a plurality of rotary shafts are rotatably connected with the disc, two ferrules are fixedly connected on each rotary shaft, the two ferrules are respectively connected with two sides of the disc in an attaching manner, a cutting knife is fixedly connected on each rotary shaft at one side of the disc, the diameter of each cutting knife is different, two belt pulleys are fixedly connected on the rotary shafts at the other side of the disc, two belt pulleys on each rotary shaft are respectively connected with the belt pulleys on the two adjacent rotary shafts in a belt transmission manner, an L-shaped rod is fixedly connected with one side of the disc, one end of the L-shaped rod is fixedly connected with a second motor, the output end of the second motor is fixedly connected with one rotating shaft, and the cutting knife is arranged between the two moving plates.

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 transverse plates on the L-shaped clamping plates are arranged in an arc shape.

Preferably, the cross section of the upright rod is square.

Preferably, the thread directions on the second threaded rod are opposite from the middle

Compared with the prior art, the utility model has the beneficial effects that: through the cooperation of the third motor, the third electric telescopic rod, the L-shaped clamp plate, the second threaded rod, the third T-shaped slide block and the movable plate, the steel pipe is effectively clamped and fixed, and then the first electric telescopic rod, the sleeve, the vertical rod, the first threaded rod, the first T-shaped block and the first T-shaped groove are used in a matching way, so that the position of the cutting knife is effectively adjusted, the steel pipes with different thicknesses are conveniently cut, then the first motor, the second motor and the two fourth motors are operated to enable the plurality of cutting knives to rotate while revolving, the steel pipes synchronously rotate, the speed of one circle of the steel pipe is twice of the speed of one circle of the disk, so that when the steel pipe rotates, the steel pipe is sequentially cut through the rotation of the plurality of cutting knives with different sizes, the cutting of the steel pipe is gradually deepened, and the large-scale industrial steel pipe can be effectively cut, but also 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 rear view of the structure of the present invention;

FIG. 3 is a schematic illustration of FIG. 1 of the present invention;

in the figure: the device comprises a bottom plate 1, a first retainer 2, a vertical plate 3, a first T-shaped groove 4, a first threaded rod 5, a first T-shaped block 6, a first electric telescopic rod 7, a fixing block 8, a second retainer 9, a cutting knife 10, a disc 11, a belt 12, a belt pulley 13, a rotating shaft 14, a first motor 15, a fixing plate 16, a sleeve 17, a vertical rod 18, a second T-shaped sliding block 19, a second T-shaped sliding groove 20, a second threaded rod 21, a third T-shaped sliding block 22, a third T-shaped sliding groove 23, a second electric telescopic rod 24, a tray 25, an L-shaped clamping plate 26, a third electric telescopic rod 27, a first retaining ring 28, a round rod 29, a second motor 30, an L-shaped rod 31, a moving plate 32, a second retaining ring 33, a rotating rod 34, a first supporting plate 35, a third motor 36, a second supporting plate 37, a fourth motor 38 and a supporting rod 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, 2 and 3, an efficient large-scale steel pipe cutting device comprises a bottom plate 1, wherein four corners of the bottom surface of the bottom plate 1 are fixedly connected with a support rod 39, the four support rods 39 are arranged in a pairwise symmetrical manner, one side of the top surface of the bottom plate 1 is provided with two second electric telescopic rods 24, the top surfaces of the extension ends of the two second electric telescopic rods 24 are fixedly connected with a same tray 25, the top surface of the bottom plate 1 between the two second electric telescopic rods 24 is provided with a third T-shaped sliding groove 23, two third T-shaped sliding blocks 22 are symmetrically arranged in the third T-shaped sliding groove 23 and are in sliding contact with the third T-shaped sliding blocks 22, the top surfaces of the third T-shaped sliding blocks 22 extend out of the third T-shaped sliding groove 23 and are in sliding contact with the third T-shaped sliding groove 23, the top surfaces of the two third T-shaped sliding blocks 22 outside the third T-shaped sliding groove 23 are fixedly connected with a moving plate 32, the tray 25 is arranged in the middle of the two moving plates 32, a second threaded rod 21 is arranged in the third T-shaped sliding groove 23, two ends of the second threaded rod 21 penetrate through the side wall of the bottom plate 1 and are in fit rotary connection with the side wall, two sides of the bottom plate 1 are in fit connection with lantern rings, the two lantern rings are respectively sleeved at two ends of the second threaded rod 21 and are fixedly connected with the two ends, two third T-shaped sliding blocks 22 are respectively sleeved on the second threaded rod 21 and are in threaded connection with the second threaded rod 21, one side of the bottom plate 1 is fixedly connected with a first supporting plate 35, the top surface of the first supporting plate 35 is fixedly connected with a third motor 36, the output end of the third motor 36 is fixedly connected with one end of the second threaded rod 21, two moving plates 32 are respectively in fit rotary connection with a round rod 29, each round rod 29 is sleeved with two first baffle rings 28 and is fixedly connected with the round rods, and the two first baffle rings 28 are respectively in fit connection with two sides of the moving plates 32, a second supporting plate 37 is fixedly connected to the opposite sides of the two moving plates 32, a fourth motor 38 is fixedly connected to the top surface of the second supporting plate 37, the output ends of the two fourth motors 38 are fixedly connected to one ends of the two round rods 29, respectively, four third electric telescopic rods 27 are fixedly connected to the two round rods 29 on the opposite side of the two moving plates 32, the four third electric telescopic rods 27 on each round rod 29 are annularly and equidistantly arranged, an L-shaped clamp plate 26 is fixedly connected to the extension ends of the round rods 29, a second T-shaped sliding groove 20 is arranged on the top surface of the bottom plate 1, a second T-shaped sliding block 19 is arranged in the second T-shaped sliding groove 20 and is in sliding connection with the second T-shaped sliding block in a fitting manner, a vertical rod 18 is fixedly connected to the top surface of the second T-shaped sliding block 19 and extends out of the second T-shaped sliding groove 20, a sleeve 17 is sleeved on the vertical rod 18 and is in sliding connection with the second T-shaped sliding connection with the vertical rod in a fitting manner, a vertical plate 3 is arranged on one side of the sleeve 17, the bottom surface of the vertical plate 3 is fixedly connected with the top surface of the bottom plate 1, a first T-shaped groove 4 is arranged on one side of the bottom plate 1, a first T-shaped block 6 is arranged in the first T-shaped groove 4 and is in sliding connection with the first T-shaped block 6 in a laminating manner, one end of the first T-shaped block 6 extends out of the first T-shaped groove 4 and is fixedly connected with a first electric telescopic handle 7, the extension end of the first electric telescopic handle 7 is fixedly connected with one side of the sleeve 17, a fixed block 8 is fixedly connected with the top surface of one side of the vertical plate 3, a first threaded rod 5 is rotatably connected on the fixed block 8, two second retaining rings 9 are fixedly connected at the top end of the first threaded rod 5, the two second retaining rings 9 are respectively in laminating connection with the top surface and the bottom surface of the fixed block 8, the bottom surface of the first threaded rod 5 sequentially penetrates through the first T-shaped block 6 and the bottom plate 1, the first threaded rod 5 is in threaded connection with the first T-shaped block 6, the first threaded rod 5 is in laminating and rotating connection with the bottom plate 1, the bottom end of the first threaded rod 5 is fixedly connected with two first check rings 2, the two first check rings 2 are respectively in laminating connection with the top surface and the bottom surface of the bottom plate 1, the bottom surface of the first threaded rod 5 is fixedly connected with a handle, the top end of the sleeve 17 is in laminating and rotating connection with a rotating rod 34, the rotating rod 34 is fixedly connected with two second check rings 33, the two second check rings 33 are respectively in laminating connection with the two sides of the sleeve 17, one side of the sleeve 17 is fixedly connected with a fixed plate 16, the top surface of the fixed plate 16 is fixedly connected with a first motor 15, the output end of the first motor 15 is fixedly connected with one end of the rotating rod 34, the other end of the rotating rod 34 is fixedly connected with a disc 11, the disc 11 is in rotating connection with a plurality of rotating shafts 14, and each rotating shaft 14 is fixedly connected with two ferrules, two ferrules of the cutting device are respectively attached to two sides of a disc 11, a cutting knife 10 is fixedly connected to a plurality of rotating shafts 14 on one side of the disc 11, the diameters of the cutting knives 10 are different, two belt pulleys 13 are fixedly connected to a plurality of rotating shafts 14 on the other side of the disc 11, the two belt pulleys 13 on each rotating shaft 14 are respectively in transmission connection with the belt pulleys 13 on the two adjacent rotating shafts 14 through a belt 12, an L-shaped rod 31 is fixedly connected to one side of the disc 11, a second motor 30 is fixedly connected to one end of the L-shaped rod 31, the output end of the second motor 30 is fixedly connected with one rotating shaft 14, and the cutting knife 10 is arranged in the middle of the two moving plates 32.

The first motor 15, the second motor 30, the third motor 36, the first electric telescopic rod 7 and the second electric telescopic rod 24 are all electrically connected with an external power supply.

The transverse plates on the L-shaped clamping plate 26 are arranged in an arc shape.

The cross section of the vertical rod 18 is square.

The thread directions on the second threaded rod 21 are oppositely arranged from the middle.

The working principle is as follows: the utility model is used for cutting large-scale industrial steel pipes, when cutting, firstly, the steel pipes are placed on a tray 25, then a second electric telescopic rod 24 is started to operate, so that an extension end pushes the tray 25 and the steel pipes to be lifted until the steel pipes are lifted to the right side of a round bar 29, then the second electric telescopic rod 24 stops operating, then a plurality of third electric telescopic rods 27 are started to extend, so that the extension ends push L-shaped clamping plates 26 to move towards two sides, further the outer arc surfaces of the upper transverse plates of the L-shaped clamping plates 26 are opposite to the inner side walls of the steel pipes, at the moment, the outer arc surfaces of the upper transverse plates of the L-shaped clamping plates 26 form a circle, the diameter of the circle is the same as the inner diameter of the steel pipes, then the third electric telescopic rods 27 are stopped to operate, a third motor 36 is started again to operate, so that an output end drives a second threaded rod 21 to rotate, further two third T-shaped sliding blocks 22 in threaded connection on a second threaded rod 2 are close to each other, further, the two third T-shaped sliding blocks 22 drive the two moving plates 32 to synchronously move relatively, the outer arc surfaces of the upper cross plates of the L-shaped clamping plates 26 at the two sides of the steel pipe effectively extend into the steel pipe and are tightly attached to the steel pipe, an anti-slip rubber layer is arranged at the contact part of the L-shaped clamping plates 26 and the steel pipe, the third motor 36 stops operating until the upper vertical plates of the L-shaped clamping plates 26 at the two sides are attached to the two ends of the steel pipe, the steel pipe is effectively fixed in the middle, the first electric telescopic rod 7 is started to operate, so that the sleeve 17 and the vertical rod 18 are pushed by the extension end to move towards one side of the steel pipe under the arrangement of the second T-shaped sliding block 19 and the second T-shaped sliding groove 20, then the first threaded rod 5 rotates, the first T-shaped block 6 in threaded connection with the first threaded rod 5 slides in the first T-shaped groove 4, and the first T-shaped block 6 drives the first electric telescopic rod 7 to move up and down, further make the first electric telescopic handle 7 drive the sleeve 17 to realize the slip on the montant 18, the regulation of the cutting knife 10 position of effective realization, thus facilitate the steel pipe of cutting thickness difference, then start the first motor 15, the second motor 30 and two fourth motors 38 to operate, when the second motor 30 operates, through the belt 12, belt pulley 13 and cooperating use of the spindle 14, make a plurality of cutting knives 10 realize the rotation synchronously, at the same time the first motor 15 operates, make its output end drive the disc 11 to realize the rotation through the rotating rod 34, and then make a plurality of cutting knives 10 on the disc 11 limit the rotation limit to have enough to meet the need, and when two fourth motors 38 operate, make the output end drive two round bars 29 in the steel pipe both ends to rotate, and then make the steel pipe fixed between a plurality of L-shaped splint 26 rotate synchronously, the speed of a week of steel pipe rotation at this moment is two times of a week speed of disc 11 rotation, like this when the steel pipe is rotatory, cut the steel pipe in proper order through the rotation of cutting knife 10 of a plurality of variation in size, deepen gradually like this and cut the steel pipe, can effectually cut large-scale industry steel pipe, can effectual improvement cutting knife's life 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 (5)

1. The utility model provides a large-scale steel pipe cutting device of efficient, includes bottom plate (1), its characterized in that: the bottom surface four corners of the bottom plate (1) are fixedly connected with a supporting rod (39), the four supporting rods (39) are arranged in a pairwise symmetrical mode, two second electric telescopic rods (24) are arranged on one side of the top surface of the bottom plate (1), the top surfaces of the extension ends of the two second electric telescopic rods (24) are fixedly connected with the same tray (25), a third T-shaped sliding groove (23) is arranged on the top surface of the bottom plate (1) between the two second electric telescopic rods (24), two third T-shaped sliding blocks (22) are symmetrically arranged in the third T-shaped sliding groove (23) and are in fit sliding connection with the third T-shaped sliding blocks, the top surface of each third T-shaped sliding block (22) extends out of the third T-shaped sliding groove (23) and is in fit sliding connection with the third T-shaped sliding groove, the top surfaces of the two third T-shaped sliding blocks (22) outside the third T-shaped sliding groove (23) are both fixedly connected with a moving plate (32), and the tray (25) is arranged in the middle of the two moving plates (32), a second threaded rod (21) is arranged in the third T-shaped sliding groove (23), two ends of the second threaded rod (21) penetrate through the side wall of the bottom plate (1) and are in fit rotary connection with the side wall, two sides of the bottom plate (1) are in fit connection with lantern rings, the two lantern rings are respectively sleeved on two ends of the second threaded rod (21) and are fixedly connected with the two ends of the second threaded rod, two third T-shaped sliding blocks (22) are respectively sleeved on the second threaded rod (21) and are in threaded connection with the second threaded rod, one side of the bottom plate (1) is fixedly connected with a first supporting plate (35), the top surface of the first supporting plate (35) is fixedly connected with a third motor (36), the output end of the third motor (36) is fixedly connected with one end of the second threaded rod (21), two moving plates (32) are in fit rotary connection with a round rod (29), and each round rod (29) is sleeved with two first retaining rings (28) and is fixedly connected with the round rod, two first baffle rings (28) are respectively attached to two sides of a movable plate (32), one side of each of the two movable plates (32) opposite to each other is fixedly connected with a second support plate (37), the top surface of the second support plate (37) is fixedly connected with a fourth motor (38), the output ends of the two fourth motors (38) are respectively fixedly connected with one ends of two round rods (29), the two round rods (29) on one side of each of the two movable plates (32) opposite to each other are respectively fixedly connected with four third electric telescopic rods (27), the four third electric telescopic rods (27) on each round rod (29) are arranged in an annular equidistant mode, the extension ends on the round rods (29) are respectively and fixedly connected with an L-shaped clamping plate (26), the top surface of the bottom plate (1) is provided with a second T-shaped sliding groove (20), and a second T-shaped sliding block (19) is arranged in the second T-shaped sliding groove (20) and is attached to the second T-shaped sliding block, the top surface of the second T-shaped sliding block (19) extends out of a second T-shaped sliding groove (20) and is fixedly connected with a vertical rod (18), a sleeve (17) is sleeved on the vertical rod (18) and is in sliding connection with the vertical rod in a laminating manner, a vertical plate (3) is arranged on one side of the sleeve (17), the bottom surface of the vertical plate (3) is fixedly connected with the top surface of the bottom plate (1), a first T-shaped groove (4) is arranged on one side of the bottom plate (1), a first T-shaped block (6) is arranged in the first T-shaped groove (4) and is in sliding connection with the first T-shaped block in a laminating manner, one end of the first T-shaped block (6) extends out of the first T-shaped groove (4) and is fixedly connected with a first electric telescopic rod (7), the extension end of the first electric telescopic rod (7) is fixedly connected with one side of the sleeve (17), one side top surface of the vertical plate (3) is fixedly connected with a fixed block (8), and the fixed block (8) is rotatably connected with a first threaded rod (5), the top end of the first threaded rod (5) is fixedly connected with two second check rings (9), the two second check rings (9) are respectively connected with the top surface and the bottom surface of the fixed block (8) in a laminating manner, the bottom surface of the first threaded rod (5) sequentially passes through the first T-shaped block (6) and the bottom plate (1), the first threaded rod (5) is in threaded connection with the first T-shaped block (6), the first threaded rod (5) is in laminating and rotating connection with the bottom plate (1), the bottom end of the first threaded rod (5) is fixedly connected with two first check rings (2), the two first check rings (2) are respectively in laminating connection with the top surface and the bottom surface of the bottom plate (1), the bottom surface of the first threaded rod (5) is fixedly connected with a handle, the top end of the sleeve (17) is in laminating and rotating connection with a rotating rod (34), and the rotating rod (34) is fixedly connected with two second check rings (33), the two second baffle rings (33) are respectively attached to two sides of the sleeve (17), a fixing plate (16) is fixedly connected to one side of the sleeve (17), a first motor (15) is fixedly connected to the top surface of the fixing plate (16), the output end of the first motor (15) is fixedly connected to one end of a rotating rod (34), a disc (11) is fixedly connected to the other end of the rotating rod (34), a plurality of rotating shafts (14) are rotatably connected to the disc (11), two ferrules are fixedly connected to each rotating shaft (14), the two ferrules are respectively attached to two sides of the disc (11), one cutting knife (10) is fixedly connected to each rotating shaft (14) on one side of the disc (11), the diameters of the cutting knives (10) are different, and two belt pulleys (13) are fixedly connected to each rotating shaft (14) on the other side of the disc (11), two belt pulleys (13) on every pivot (14) are connected through belt (12) transmission with belt pulley (13) on two adjacent pivots (14) respectively, one side fixedly connected with L type pole (31) of disc (11), the one end fixedly connected with second motor (30) of L type pole (31), the output and one of them pivot (14) fixed connection of second motor (30), cutting knife (10) set up the centre at two movable plates (32).

2. The efficient large steel pipe cutting device according to claim 1, wherein: the first motor (15), the second motor (30), the third motor (36), the first electric telescopic rod (7) and the second electric telescopic rod (24) are all electrically connected with an external power supply.

3. The efficient large steel pipe cutting device according to claim 1, wherein: the transverse plates on the L-shaped clamping plates (26) are arranged in an arc shape.

4. The efficient large steel pipe cutting device according to claim 1, wherein: the cross section of the vertical rod (18) is square.

5. The efficient large steel pipe cutting device according to claim 1, wherein: the thread directions on the second threaded rod (21) are opposite from the middle.

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