Plasma cutting device for building construction steel

Abstract

The invention relates to the technical field of plasma cutting, and discloses a building construction steel plasma cutting device which comprises a lower annular plate, a column body is arranged at the center of one side of the lower annular plate, an L-shaped frame body is arranged on the side, away from the lower annular plate, of the column body, a notch is formed in the top of the outer side of the L-shaped frame body, a connecting rod is arranged in the notch, and an L-shaped block is arranged on the connecting rod. A mounting plate is arranged on the outer side of the L-shaped block; a positioning part is arranged at a ring opening of the side edge of the top of the lower ring plate, a plurality of first supporting columns are arranged on the outer side of the positioning part, an upper ring plate is arranged at the tops of the first supporting columns, a telescopic limiting part is arranged at a ring opening of the top of the upper ring plate, a supporting part is arranged on the side, close to a column body, of the lower ring plate, a cutting gun is arranged on the supporting part, and the supporting part is connected with the telescopic limiting part; and the positioning part comprises a convex block, the convex block is fixed to the center of the side edge of the top of the lower annular plate, the steel cutting device is suitable for cutting steel of various sizes and shapes, the distance between the cutting gun and the steel is controlled not to be changed under external factors, and the cutting operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plasma cutting, in particular to a building construction steel plasma cutting device. BACKGROUND

[0002] In the field of building demolition, the net frame demolition is extremely dangerous. For high-altitude net frame, it is necessary to cut the net frame at fixed points through high-altitude cutting. For example, the patent with the application number 202111087836.6 and the patent name "plasma steel cutting device" uses a high-altitude crane and a mechanical arm to send a ring-shaped motion mechanism to the high-altitude net frame, uses a fixed assembly to fix the high-altitude net frame in the cutting range, and drives the cutting gun to move in a ring shape through the ring-shaped motion mechanism, thereby achieving fast cutting of the high-altitude net frame.

[0003] However, the above scheme lacks a positioning device. From the technical scheme itself, the device only uses a fixed strong magnet installed on the fixed rubber pad of the fixed assembly to adsorb and fix the steel, which has poor fixing effect. Since the sizes of the steel on the high-altitude net frame are not consistent, if the steel is adsorbed by the fixed strong magnet at this time, the steel will not be at the center position of the ring-shaped motion mechanism, which will cause the plasma cutting gun to be too close or too far from the steel, or even collide with the steel. The former will only affect the cutting effect, while the latter will cause malfunction and damage to the plasma cutting gun. SUMMARY

[0004] The technical task of the present application is to solve the above problems by providing a building construction steel plasma cutting device.

[0005] The technical scheme of the present application is as follows: The L-shaped frame is provided on the side of the column away from the lower ring plate, and a notch is provided on the top of the outer side of the L-shaped frame. A connecting rod is provided in the notch, and an L-shaped block is provided on the connecting rod. A mounting plate is provided on the outer side of the L-shaped block; a positioning part is provided at the ring opening of the top side of the lower ring plate, and a plurality of supporting columns are provided on the outer side of the positioning part. An upper ring plate is provided on the top of the supporting column, and a telescopic limit part is provided at the ring opening of the top of the upper ring plate. A support part is provided on the side of the lower ring plate close to the column, and a cutting gun is provided on the support part, and the support part is connected to the telescopic limit part; the positioning part includes a protrusion, which is fixed at the center of the top side of the lower ring plate, and an output shaft is inserted through the middle of the protrusion. One end of the gear is connected to the motor installed inside the column, and the other end of the output shaft is provided with a bevel gear 1, and a meshing bevel gear 2 is provided on one side below the bevel gear 1, and a side gear tooth is provided on the side of the bevel gear 2. Gears 2 are meshing with each other on both ends of the top side of the lower ring plate on both sides of the side gear teeth. Gear 2 is provided with meshing gears 3 on both sides near the ring mouth, and gear 3 is provided with a meshing first side gear rotating ring on the side away from gear 2. The inner wall of the first side gear rotating ring is provided with inner wall gear teeth, and several meshing gears 6 are provided on the inner side of the inner wall gear teeth. Several slide grooves are provided at the top ring mouth of the lower ring plate below the first side gear rotating ring, and a matching positioning slide plate is provided in the slide groove. The top of the positioning slide plate is provided with a side gear bar meshing with gear 6.

[0006] Preferably, a guide groove 1 is provided in the middle of the top and bottom of the first side gear rotating ring; a matching second convex ring is provided in the lower guide groove 1, and the second convex ring is fixed at the top of the lower ring plate near the periphery of the ring mouth; a matching first convex ring is provided in the upper guide groove 1, and the first convex ring is fixed at the bottom of the upper ring plate near the side of the ring mouth.

[0007] Preferably, the support portion includes a plate body, and brackets are provided on the lower parts of both sides of the plate body, and the brackets are fixed to the side of the lower ring plate close to the column side. A through hole is provided at the center of the upper part of the plate body, and the cutting gun passes through the through hole. A fixing plate one is provided on the side of the cutting gun close to the L-shaped frame body, and a fixing plate two is provided at the bottom of the fixing plate one, and a fixing plate three is provided at the bottom of the fixing plate two. A distance positioning rod is provided on the side of the fixing plate three corresponding to the plate body, and the distance positioning rod passes through the plate body. A reset spring is provided on the distance positioning rod between the plate body and the fixing plate three.

[0008] Preferably, a limiting rod 1 is provided on both sides of the lower part of one side of the fixed plate corresponding to the plate body, and a matching limiting rod 2 is provided at the end of the plate body corresponding to the limiting rod 1; a ring body is provided at the end of the positioning rod away from the fixed plate 3, and a pushing ring is provided on both sides of the ring body; a cavity is provided in the plate body, and a connecting part is provided in the cavity, which is connected to the telescopic limiting part.

[0009] As preferred, the connecting part comprises a gear one, a side gear meshing with the gear one is arranged on the side of the gear one close to the distance positioning rod; a middle part of the gear one is provided with a belt pulley shaft one, the belt pulley shaft one penetrates the plate body, a top part of the belt pulley shaft one is provided with a first belt pulley; the telescopic limiting part comprises a belt pulley shaft two, the belt pulley shaft two is fixed on a top side of the upper ring plate, a top part of the belt pulley shaft two is provided with a second belt pulley, the second belt pulley is connected with the first belt pulley through a belt one, a third belt pulley is arranged on the belt pulley shaft two below the second belt pulley; a gear five is arranged on a side of the belt pulley shaft two at a center of a top side edge of the upper ring plate, a gear four is arranged above the gear five, a second side gear rotating ring meshing with the gear four is arranged on a side edge of the gear four at a side edge of a ring opening of the upper ring plate, a third side gear rotating ring meshing with the gear five is arranged below the second side gear rotating ring; a driving part is arranged on the bottom of the upper ring plate at a position below the gear five, the driving part is connected with the gear five and the gear four.

[0010] As preferred, the driving part comprises a cavity column, the cavity column is fixed on a side edge of the bottom of the upper ring plate, a conical gear four is arranged on the inner bottom of the cavity column, a third shaft is arranged on the top part of the conical gear four, the third shaft penetrates the cavity column, the upper ring plate, the gear five and the gear four, a fourth belt pulley is arranged on the top part of the third shaft, the fourth belt pulley is connected with the third belt pulley through a belt two; a second shaft is arranged on the outer side of the lower part of the third shaft, the bottom of the second shaft is connected with the top part of the conical gear four, the second shaft penetrates the bottom of the upper ring plate and the gear five and the gear four; a first shaft is arranged on the bottom of the gear five, the first shaft is arranged on the outer side of the third shaft, the first shaft penetrates the upper ring plate, a conical gear five is arranged on the bottom of the first shaft, a conical gear three meshing with the conical gear five and the conical gear four is arranged between the side edges of the conical gear five and the conical gear four, a shaft is arranged in the middle part of the conical gear three, the shaft penetrates the cavity column, a driver is connected with the outer end of the shaft, the driver is arranged on the side edge of the cavity column.

[0011] As preferred, a plurality of support columns two are arranged on both sides of the second side gear rotating ring, a horizontal plate is arranged between the top parts of any group of the support columns two, the second side gear rotating ring and the third side gear rotating ring are arranged below the horizontal plate.

[0012] As preferred, a guide groove two is arranged at the center of the top part of the third side gear rotating ring, a third convex ring matched with the guide groove two is arranged at the center of the bottom of the second side gear rotating ring.

[0013] Compared with the prior art, the application has the advantages and positive effects that: 1. By setting the upper ring plate and the lower ring plate, the upper ring plate and the lower ring plate form a double-layer clamping mechanism to encircle the steel in a double-layer manner, and then position it at the positioning part set around the ring of the lower ring plate. The steel in the ring is automatically adjusted by the positioning part to always position the steel in the center of the ring, so that the distance between the steel and the cutting gun remains unchanged. When the steel is controlled in the center of the ring, the cutting operation will not be affected by the problem of angle offset.

[0014] 2. Install the cutting gun on the support part. The distance positioning rod on the support part is affected by the size or shape of the steel, which drives the cutting gun to move so that the distance between the cutting gun and the steel is always maintained within the specified distance, so that the cutting gun will not be affected by the steel itself and will move closer or farther away from the steel during the cutting operation.

[0015] 3. A telescopic limit part is provided around the ring on the upper ring plate. The telescopic limit part is mainly used to limit the encircled steel, and the area of ​​the limit circle is increased to prevent the encircled steel from tilting outward from the opening in the ring, keep the steel encircled in the ring, and allow a certain interlayer distance between the upper ring plate and the lower ring plate. When plasma cutting is performed, the double-layer structure will improve the support, which is more stable than the thin lower ring plate. In addition, the telescopic limit part is linked to the distance positioning rod. In addition to achieving the encircling effect, it can also drive the distance positioning rod to slide against the steel, thereby adjusting the positioning of the distance between the cutting gun and the steel.

[0016] 4. Suitable for cutting steel of various sizes and shapes. It can control the distance between the cutting gun and the steel so that it will not change under external factors, thus improving the efficiency of the cutting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is an overall exploded view according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a positioning portion according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a lower ring plate according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a support portion according to an embodiment of the present invention; Figure 5Fig. 1 is a schematic view of a telescopic limiting part structure according to an embodiment of the present application; Figure 6 Fig. 2 is a schematic view of a telescopic limiting part structure according to another embodiment of the present application; Figure 5 Fig. 3 is a partial enlarged view of Fig. 2A.

[0019] Fig. 4 is a schematic view of a telescopic limiting part structure according to another embodiment of the present application; 1, lower ring plate; 2, cylinder; 3, L-shaped frame body; 4, connecting rod; 5, L-shaped block; 6, mounting plate; 7, positioning part; 8, support column I; 9, upper ring plate; 10, support part; 11, protruding block; 12, bevel gear I; 13, bevel gear II; 14, side gear teeth; 15, gear II; 16, gear III; 17, first side gear teeth rotating ring; 18, inner wall gear teeth; 19, gear VI; 20, sliding groove; 21, positioning sliding plate; 22, side gear strip; 23, guide groove I; 24, second protruding ring; 25, first protruding ring; 26, plate body; 27, support; 28, cutting gun; 29, fixed plate I; 30, fixed plate II; 31, fixed plate III; 32, distance positioning rod; 33, return spring; 34, limiting rod I; 35, limiting rod II; 36, ring body; 37, pushing ring; 38, gear I; 39, side teeth; 40, pulley shaft I; 41, first pulley; 42, pulley shaft II; 43, second pulley; 44, belt I; 45, third pulley; 46, gear V; 47, gear IV; 48, second side gear rotating ring; 49, third side gear teeth rotating ring; 50, cavity column; 51, bevel gear IV; 52, third shaft; 53, fourth pulley; 54, belt II; 55, second shaft; 56, first shaft; 57, bevel gear V; 58, bevel gear III; 59, driver; 60, support column II; 61, cross plate; 62, guide groove II. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described below in conjunction with the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] The present application will be further described below in conjunction with the drawings and specific embodiments.

[0022] According to the embodiments of the present application, as shown in Figures 1-6 the drawings: The application provides a kind of building construction steel plasma cutting device, including lower ring plate 1, the center of one side of lower ring plate 1 is equipped with column 2, the side of column 2 away from lower ring plate 1 is equipped with L-shaped frame body 3, the outside top of L-shaped frame body 3 is equipped with notch, connecting rod 4 is equipped in notch, L-shaped block 5 is equipped on connecting rod 4, and mounting plate 6 is equipped on the outside of L-shaped block 5;The top side edge ring of lower ring plate 1 is equipped with positioning part 7, and the outside of positioning part 7 is equipped with a plurality of support columns one 8, the top of support column one 8 is equipped with upper ring plate 9, and the top ring of upper ring plate 9 is equipped with telescopic limiting part, the side of lower ring plate 1 close to column 2 is provided with support part 10, cutting torch 28 is equipped on support part 10, and support part 10 is connected with telescopic limiting part;Positioning part 7 includes lug 11, lug 11 is fixed at the top side edge center of lower ring plate 1, output shaft is inserted in the middle of lug 11, one end of output shaft is connected with motor mounted in the inside of column 2, the other end of output shaft is equipped with conical gear one 12, conical gear two 13 is equipped on the side below conical gear one 12, side gear 14 is equipped on the side of conical gear two 13, gear two 15 is equipped on the both sides of side gear 14 and located at the top side of lower ring plate 1 both ends, gear three 16 is equipped on the both sides of gear two 15 close to ring, first side gear rotating ring 17 is equipped on the side of gear three 16 away from gear two 15, inner wall gear 18 is equipped on the inner wall of first side gear rotating ring 17, a plurality of gear six 19 are engaged in the inside of inner wall gear 18, a plurality of sliding grooves 20 are equipped on the top ring of lower ring plate 1 below first side gear rotating ring 17, positioning slide 21 is equipped in sliding groove 20, side gear strip 22 is equipped on the top of positioning slide 21 and engaged with gear six 19, guide groove one 23 is equipped in the middle of the top and bottom of first side gear rotating ring 17;Second convex ring 24 is equipped in lower guide groove one 23, and second convex ring 24 is fixed on the top of lower ring plate 1 and close to ring perimeter;First convex ring 25 is equipped in upper guide groove one 23, and first convex ring 25 is fixed on the bottom of upper ring plate 9 and close to ring side edge.

[0023] The installation plate 6 is installed on the mechanical arm working end of the high-altitude crane, the installation plate 6 is fixedly connected with the top of the side edge of the L-shaped frame body 3, the L-shaped block 5 is connected between the installation plate 6 and the column body 2, the column body 2 is a cavity structure, a motor connection connected with the conical gear one 12 is arranged in the cavity structure, the top periphery of the conical gear two 13 is engaged with the conical gear one 12, the side gear teeth 14 arranged on the side edge of the conical gear two 13 are engaged with the gear two 15 on both sides. The gear teeth on the outer side wall of the first side gear teeth rotating ring 17 are engaged with the gear three 16, the inner wall gear teeth 18 arranged on the inner wall of the first side gear teeth rotating ring 17 are engaged with the gear six 19, the lower part of the gear six 19 is engaged with the side gear strip 22, the second convex ring 24 is arranged on both sides of the positioning sliding plate 21, the second convex ring 24 is embedded in the guide groove one 23 at the bottom center position of the first side gear teeth rotating ring 17, and the first side gear teeth rotating ring 17 is located between the lower ring plate 1 and the upper ring plate 9.

[0024] When the first side gear teeth rotating ring 17 rotates, the opening at one side of the ring opening of the lower ring plate 1 and the upper ring plate 9 is blocked, the ring opening forms a circular structure, the steel material in the ring is clamped, the sliding movement of the positioning sliding plate 21 on the periphery is used to position the steel material in the ring, and the steel material is always kept at the center position of the ring opening, so that the cutting gun 28 can keep accurate cutting of the steel material during cutting operation.

[0025] The support part 10 comprises a plate body 26, both sides of the lower part of the plate body 26 are provided with supports 27, the supports 27 are fixed on the side of the lower ring plate 1 close to the side of the column body 2, the upper center of the plate body 26 is provided with a through hole, a cutting gun 28 penetrates the through hole, the side close to the L-shaped frame body 3 of the cutting gun 28 is provided with a fixed plate one 29, the bottom of the fixed plate one 29 is provided with a fixed plate two 30, the bottom of the fixed plate two 30 is provided with a fixed plate three 31, the side corresponding to the plate body 26 of the fixed plate three 31 is provided with a distance positioning rod 32, the distance positioning rod 32 penetrates the plate body 26, the plate body 26 and the fixed plate three 31 are sleeved with a return spring 33 on the distance positioning rod 32, the lower part of the side corresponding to the plate body 26 of the fixed plate three 31 is provided with a limiting rod one 34 on both sides, the end corresponding to the limiting rod one 34 of the plate body 26 is provided with a limiting rod two 35 matched therewith; the end away from the fixed plate three 31 of the distance positioning rod 32 is provided with a ring body 36, both sides of the ring body 36 are provided with pushing rings 37; the plate body 26 is provided with a cavity, the cavity is provided with a connecting part, the connecting part is connected with a telescopic limiting part, the connecting part comprises a gear one 38, the side close to the gear one 38 of the distance positioning rod 32 is provided with a side tooth 39 engaged with the gear one 38; the middle part of the gear one 38 is provided with a belt pulley shaft one 40, the belt pulley shaft one 40 penetrates the plate body 26, the top of the belt pulley shaft one 40 is provided with a first belt pulley 41; the telescopic limiting part comprises a belt pulley shaft two 42, the belt pulley shaft two 42 is fixed on the top side of the upper ring plate 9, the top of the belt pulley shaft two 42 is provided with a second belt pulley 43, the second belt pulley 43 is connected with the first belt pulley 41 through a belt one 44, the lower part of the second belt pulley 43 is provided with a third belt pulley 45 on the belt pulley shaft two 42; the side of the belt pulley shaft two 42 is provided with a gear five 46 at the center of the top side of the upper ring plate 9, the upper part of the gear five 46 is provided with a gear four 47, the side of the gear four 47 is provided with a second side gear rotating ring 48 engaged with the side of the upper ring plate 9, the lower part of the second side gear rotating ring 48 is provided with a third side gear rotating ring 49 engaged with the gear five 46; the bottom of the upper ring plate 9 is provided with a driving part at the position below the gear five 46, the driving part is connected with the gear five 46 and the gear four 47, the driving part comprises a cavity column 50, the cavity column 50 is fixed on the bottom side of the upper ring plate 9, the bottom of the cavity column 50 is provided with a conical gear four 51, the top of the conical gear four 51 is provided with a third shaft 52, the third shaft 52 penetrates the cavity column 50, the upper ring plate 9, the gear five 46 and the gear four 47, the top of the third shaft 52 is provided with a fourth belt pulley 53, the fourth belt pulley 53 is connected with the third belt pulley 45 through a belt two 54; the lower part of the third shaft 52 is sleeved with a second shaft 55, the bottom of the second shaft 55 is connected with the top of the conical gear four 51, the second shaft 55 penetrates the bottom of the upper ring plate 9 and the gear five 46 and the gear four 47.The bottom of the gear wheel five 46 is provided with a first shaft 56 located outside the third shaft 52, the first shaft 56 penetrates the upper ring plate 9, the bottom of the first shaft 56 is provided with a bevel gear wheel five 57, the bevel gear wheel five 57 and the side of the bevel gear wheel four 51 are provided with a meshing bevel gear wheel three 58, the middle of the bevel gear wheel three 58 is provided with a shaft, the shaft penetrates the cavity column 50, the outer end of the shaft is connected with a driver 59, the driver 59 is installed on the side of the cavity column 50, the second side gear rotating ring 48 is provided with a plurality of support columns two 60 on both sides, the top of any group of support columns two 60 is provided with a horizontal plate 61, the second side gear rotating ring 48 and the third side gear rotating ring 49 are located below the horizontal plate 61, the top center of the third side gear rotating ring 49 is provided with a guide groove two 62, and the bottom center of the second side gear rotating ring 48 is provided with a third convex ring matched with the guide groove two 62.

[0026] The cutting gun 28 is installed on the support part 10, and the distance positioning rod 32 is inserted through the plate body 26. When the distance positioning rod 32 is affected by steel materials of different sizes or different shapes, the distance positioning rod 32 will move, and the cutting gun 28 will move together with the distance positioning rod 32, so that the cutting gun 28 and the steel material always maintain a specified distance. Therefore, regardless of the size of the steel material or the shape of the steel material, the distance between the cutting gun 28 and the steel material is limited by the positioning of the distance positioning rod 32, so as to avoid the distance between the distance positioning rod 32 and the steel material being close or far.

[0027] Detailed use method and effect of the embodiment: The device is installed on the working end of the mechanical arm of the high-altitude crane, in use, the lower ring plate 1 and the upper ring plate 9 are transported to the designated working position in the air by the mechanical arm of the high-altitude crane, and the position of the cutting device is fine-tuned by the mechanical arm, the high-altitude net rack is sleeved on the ring opening of the lower ring plate 1 and the upper ring plate 9, and then the plasma cutting gun 28 is used for cutting. The mechanical arm of the high-altitude crane at the position is prior art (see patent CN113714612A), which will not be described in detail here.

[0028] The mechanical arm controls the upper ring plate 9 and the lower ring plate 1 to clamp the steel, and the driving motor is driven to rotate, the driving motor drives the conical gear 1 to rotate, the conical gear 1 drives the lower meshing conical gear 2, the conical gear 2 drives the side gear 3 to rotate, the side gear 3 drives the meshing gear 4 to rotate, the gear 4 drives the meshing gear 5 to rotate, the gear 5 drives the first side gear rotating ring 6 to rotate, the inner wall gear 7 of the first side gear rotating ring 6 drives the meshing gear 6 to rotate, the gear 6 drives the meshing side gear strip 8 to rotate, the side gear strip 8 drives the positioning slide plate 9 to slide in the sliding groove 10, when the positioning slide plates 9 slide into the ring, the inner end of the positioning slide plate 9 clamps and positions the steel in the ring.

[0029] The driving driver 59 is driven to rotate, the driving driver 59 drives the conical gear 3 to rotate, the conical gear 3 drives the meshing conical gear 4 and the meshing conical gear 5, the conical gear 4 and the conical gear 5 rotate in opposite directions under the driving of the conical gear 3, the conical gear 4 drives the gear 4 to rotate through the second shaft 5, the gear 4 drives the second side gear rotating ring 6 to rotate in one direction, the conical gear 5 drives the first shaft 7 to rotate in the opposite direction, the first shaft 7 drives the gear 5 to rotate, the gear 5 drives the third side gear rotating ring 8 to rotate in the opposite direction, so that the second side gear rotating ring 6 and the third side gear rotating ring 8 clamp and enclose the steel in the ring, thereby forming a double-layer clamping of the steel, and increasing the clamping area of the steel. When the conical gear 4 rotates, the third shaft 9 is driven to rotate, the third shaft 9 penetrates the second shaft 5 and is connected with the fourth pulley 10, when the third shaft 9 rotates, the fourth pulley 10 is driven to rotate, the fourth pulley 10 drives the third pulley 11 to rotate through the belt 2, the third pulley 11 drives the pulley shaft 2 to rotate, the pulley shaft 2 drives the second pulley 3 to rotate, the second pulley 3 drives the first pulley 4 to rotate through the belt 1, the first pulley 4 drives the pulley shaft 1 to rotate, the pulley shaft 1 drives the gear 5 to rotate, the gear 5 drives the side gear 6 to move, the distance positioning rod 7 moves to the side of the steel under the rotation of the gear 5, and drives the pushing ring 8 to abut against the steel clamped in the ring. When the size of the steel changes, the distance positioning rod 7 abuts against the steel, and moves with the cutting gun 9 under the influence of the size of the steel, so that the distance between the cutting gun 9 and the steel is always unchanged. When the cutting gun 9 is cutting the steel, the cutting distance can be always kept appropriate.

[0030] Those skilled in the art can easily implement the present application by means of the above detailed description. However, it should be understood that the present application is not limited to the above detailed description. On the basis of the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A plasma cutting device for steel materials used in construction, characterized in that: It comprises a lower ring plate (1), a column (2) is provided at the center of one side of the lower ring plate (1), an L-shaped frame (3) is provided on the side of the column (2) away from the lower ring plate (1), a notch is provided on the top of the outer side of the L-shaped frame (3), a connecting rod (4) is provided in the notch, an L-shaped block (5) is provided on the connecting rod (4), and a mounting plate (6) is provided on the outer side of the L-shaped block (5); A positioning portion (7) is provided at the ring opening on the top side of the lower ring plate (1), a plurality of support columns (8) are provided on the outside of the positioning portion (7), an upper ring plate (9) is provided on the top of the support column (8), a telescopic limiting portion is provided at the ring opening on the top of the upper ring plate (9), a support portion (10) is provided on the side of the lower ring plate (1) close to the column (2), a cutting gun (28) is provided on the support portion (10), and the support portion (10) is connected to the telescopic limiting portion; The positioning portion (7) includes a protrusion (11), which is fixed at the center of the top side of the lower ring plate (1). An output shaft is inserted into the middle of the protrusion (11), one end of the output shaft is connected to the motor installed inside the column (2), and the other end of the output shaft is provided with a bevel gear 1 (12), and a bevel gear 2 (13) is provided on the lower side of the bevel gear 1 (12). The bevel gear 2 (13) is provided with side gear teeth (14) on the side, and both ends of the side gear teeth (14) are located on the top side of the lower ring plate (1) and are provided with meshing gears 2 (15). The gear 2 (15) is provided with two gears near the ring mouth. A meshing gear three (16) is provided on the side of the gear three (16), and a meshing first side gear rotating ring (17) is provided on the side of the gear three (16) away from the gear two (15). The inner wall of the first side gear rotating ring (17) is provided with inner wall gear teeth (18), and the inner side of the inner wall gear teeth (18) is provided with a plurality of meshing gear six (19). A plurality of slide grooves (20) are provided at the top ring opening of the lower ring plate (1) below the first side gear rotating ring (17), and a matching positioning slide plate (21) is provided in the slide groove (20), and a side gear bar (22) meshing with the gear six (19) is provided on the top of the positioning slide plate (21).

2. A plasma cutting device for construction steel according to claim 1, characterized in that: A guide groove (23) is provided at the top and the middle of the bottom of the first side gear rotating ring (17); A second convex ring (24) is provided in the lower guide groove (23) so as to match the second convex ring (24), and the second convex ring (24) is fixed on the top of the lower ring plate (1) near the periphery of the ring opening; A first convex ring (25) is provided in the upper guide groove (23) to match the first convex ring. The first convex ring (25) is fixed to the bottom of the upper ring plate (9) near the side of the ring opening.

3. The plasma cutting device for construction steel according to claim 1, characterized in that: The support portion (10) includes a plate body (26), and brackets (27) are provided at the lower parts of both sides of the plate body (26). The brackets (27) are fixed to the side of the lower ring plate (1) close to the column (2). A through hole is provided at the center of the upper part of the plate body (26), and the cutting gun (28) passes through the through hole. A fixing plate 1 (29) is provided on the side of the cutting gun (28) close to the L-shaped frame (3). A fixing plate 2 (30) is provided at the bottom of the fixing plate 1 (29). A fixing plate 3 (31) is provided at the bottom of the fixing plate 2 (30). A distance positioning rod (32) is provided on the side of the fixing plate 3 (31) corresponding to the plate body (26). The distance positioning rod (32) passes through the plate body (26). A reset spring (33) is provided on the distance positioning rod (32) between the plate body (26) and the fixing plate 3 (31).

4. A plasma cutting device for steel materials for construction according to claim 3, characterized in that: The fixing plate 3 (31) is provided with a limiting rod 1 (34) on both sides of the lower portion of one side corresponding to the plate body (26), and the plate body (26) is provided with a matching limiting rod 2 (35) at the end portion of the limiting rod 1 (34); A ring body (36) is provided at one end of the positioning rod (32) away from the fixing plate (31), and push rings (37) are provided on both sides of the ring body (36); A cavity is provided in the plate body (26), a connecting portion is provided in the cavity, and the connecting portion is connected to the telescopic limiting portion.

5. The plasma cutting device for steel materials used in construction according to claim 4, characterized in that: The connecting portion includes a gear 1 (38), and a side tooth (39) meshing with the gear 1 (38) is provided on a side close to the gear 1 (38) and away from the positioning rod (32); A pulley shaft 1 (40) is inserted into the middle of the gear 1 (38), the pulley shaft 1 (40) passes through the plate body (26), and a first pulley (41) is provided on the top of the pulley shaft 1 (40); The telescopic limiting portion includes a second pulley shaft (42), the second pulley shaft (42) is fixed to one side of the top of the upper ring plate (9), a second pulley (43) is provided on the top of the second pulley shaft (42), the second pulley (43) is connected to the first pulley (41) through a belt (44), and a third pulley (45) is provided on the second pulley shaft (42) below the second pulley (43); A gear five (46) is provided on one side of the pulley shaft two (42) at the center of the top side of the upper ring plate (9), a gear four (47) is provided above the gear five (46), a second side gear rotating ring (48) is provided on the side of the ring opening of the upper ring plate (9) to mesh with the gear four (47), and a third side gear rotating ring (49) is provided below the second side gear rotating ring (48) to mesh with the gear five (46); A driving portion is provided at the bottom of the upper ring plate (9) below the gear five (46), and the driving portion is connected to the gear five (46) and the gear four (47).

6. The plasma cutting device for construction steel according to claim 5, characterized in that: The driving part includes a cavity column (50), the cavity column (50) is fixed on the bottom side of the upper ring plate (9), a bevel gear four (51) is provided at the bottom of the cavity column (50), a third shaft (52) is provided on the top of the bevel gear four (51), the third shaft (52) passes through the cavity column (50), the upper ring plate (9), the gear five (46), and the gear four (47), a fourth pulley (53) is provided on the top of the third shaft (52), and the fourth pulley (53) is connected to the third pulley (45) through the belt two (54); A second shaft (55) is sleeved on the outer side of the lower portion of the third shaft (52), the bottom of the second shaft (55) is connected to the top of the bevel gear four (51), and the second shaft (55) passes through the upper ring plate (9) and is connected to the bottom of the gear five (46) and the gear four (47); A first shaft (56) is provided at the bottom of the gear five (46), the first shaft (56) is located outside the third shaft (52), the first shaft (56) passes through the upper ring plate (9), a bevel gear five (57) is provided at the bottom of the first shaft (56), a bevel gear three (58) meshing with each other is provided between the sides of the bevel gear five (57) and the bevel gear four (51), a shaft is inserted in the middle of the bevel gear three (58), the shaft passes through the cavity column (50), the outer end of the shaft is connected to a driver (59), and the driver (59) is installed on the side of the cavity column (50).

7. A plasma cutting device for steel materials for construction according to claim 6, characterized in that: A plurality of support columns (60) are provided on both sides of the second side gear rotating ring (48), and a transverse plate (61) is provided between the tops of any group of support columns (60). The second side gear rotating ring (48) and the third side gear rotating ring (49) are located below the transverse plate (61).

8. The plasma cutting device for steel materials used in construction according to claim 7, characterized in that: A second guide groove (62) is provided at the top center of the third side gear rotating ring (49), and a third convex ring matching the second guide groove (62) is provided at the bottom center of the second side gear rotating ring (48).

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