阅读说明：本技术 一种方形钢管多角度焊接用辅助平台 (Square steel pipe multi-angle welding auxiliary platform ) 是由 陈永泽 于 2020-06-11 设计创作，主要内容包括：本发明公开了一种方形钢管多角度焊接用辅助平台,包括U型板,U型板正下端设有底座。本装置通过两个U型安装槽以及两个安装板的设置,两个待焊接的方形钢管相对一端可以通过两个切割盘指定角度的切割,并且可以有效的保证被切割的两个管口切割角度的一致,进而有效的达到了两个管口精准切割的目的,保证两个钢管焊接处能够正好对齐,而且切割后的两个钢管可以通过两个U型安装槽精准的调整焊接角度,由于两个方形钢管相对一端已经按照焊接角度精准的切割,所以两个钢管可以通过两个U型安装槽调整好焊接角度时,两个方形钢管焊接处一端会自然的紧密贴合在一起,给予方形钢管的焊接工作提供了便利。(The invention discloses an auxiliary platform for multi-angle welding of square steel pipes. This device is through the setting of two U type mounting grooves and two mounting panels, two treat the cutting that the relative one end of welded square steel pipe can be through two appointed angles of cutting dish, and can effectual assurance by two mouth of pipe cutting angle's of cutting unanimity, and then the effectual purpose that reaches two accurate cutting in mouth of pipe, guarantee that two steel pipe welding departments can just in time align, and two steel pipes after the cutting can be through the accurate adjustment welding angle of two U type mounting grooves, because two relative one ends of square steel pipe have been according to the accurate cutting of welding angle, so when two steel pipes can have adjusted welding angle through two U type mounting grooves, two close pastes that square steel pipe welding department one end can be natural are in the same place, the weldment work who gives square steel pipe provides convenience.)

1. The utility model provides a square steel pipe multi-angle auxiliary platform for welding, includes U template (1), its characterized in that: the device is characterized in that a base (3) is arranged at the lower end of the U-shaped plate (1), the bottom end of the U-shaped plate (1) is fixedly connected with the top surface of the base (3) through a plurality of supporting legs, a guide cylinder (11) is fixed on the top surface of the base (3), a hydraulic station (12) is arranged on one side of the guide cylinder (11), the hydraulic station (12) is fixedly arranged on the top surface of the base (3), a fixing plate (13) is arranged on the other side of the guide cylinder (11), the fixing plate (13) is fixedly arranged on the top surface of the base (3), a hydraulic cylinder (14) is fixedly arranged on the side wall of the fixing plate (13), a guide rod (15) is sleeved in the guide cylinder (11) in a sliding mode, a semicircular plate (9) is fixed on the guide cylinder (11) extending out of the top end of the guide rod (15), a first hydraulic cylinder (66) is arranged, the telescopic end of the first hydraulic cylinder (66) is fixedly connected with the bottom surface of the semicircular plate (9), the axial lead of the guide rod (15) is consistent with the axial lead of the semicircular plate (9), the top surface of the semicircular plate (9) is provided with an arc-shaped chute (10) and a first arc-shaped chute (27), the axial lead of the arc-shaped chute (10) and the first arc-shaped chute (27) is consistent with the axial lead of the semicircular plate (9), the radius of the first arc-shaped chute (27) is smaller than that of the arc-shaped chute (10), the U-shaped plate (1) at the upper end of the arc-shaped chute (10) is provided with a second arc-shaped chute (4), the axial lead of the second arc-shaped chute (4) is consistent with the axial lead of the arc-shaped chute (10), the radius of the second arc-shaped chute (4) is consistent with that of the arc-shaped chute (10), two sides of the guide cylinder (11) are respectively fixed with a shaft (16) and, the shaft (16) and the first shaft (29) are respectively sleeved with a helical gear (17) and a first helical gear (30), the helical gear (17) is in rotary connection with the shaft (16), two sides of the helical gear (17) are respectively attached with a limit ring (61), the limit ring (61) is fixedly sleeved on the shaft (16), the upper end and the lower end of the helical gear (17) are respectively provided with a sleeve (18), the two sleeves (18) are respectively sleeved on the guide cylinder (11) and are in rotary connection with the guide cylinder, the two sleeves (18) are respectively and symmetrically and fixedly sleeved with a second helical gear (19), the two second helical gears (19) are respectively meshed with the top and the bottom of the helical gear (17), the top end and the bottom end of each sleeve (18) are respectively attached with a first limit ring (32), the first limit ring (32) is fixedly sleeved on the guide cylinder (11), and the side walls of the two sleeves (18) are respectively and symmetrically fixed with an L-shaped supporting, the top end of the vertical rod of the L-shaped supporting rod (20) penetrates through the arc-shaped sliding groove (10) and extends into the second arc-shaped sliding groove (4), the vertical rod of the L-shaped supporting rod (20) is in sliding connection with the arc-shaped sliding groove (10) and the contact part of the second arc-shaped sliding groove (4), a check ring (21) is fixedly sleeved on the vertical rod of the L-shaped supporting rod (20), a square sleeve (23) is sleeved on the vertical rod of the L-shaped supporting rod (20) between the check ring (21) and the semicircular plate (9), the vertical rod of the L-shaped supporting rod (20) is a square rod, the square sleeve (23) is in sliding connection with the vertical rod of the L-shaped supporting rod (20), a spring (22) is fixedly arranged between the bottom end of the square sleeve (23) and the top surface of the check ring (21), the spring (22) is sleeved on the vertical rod of the L-shaped supporting rod (20), a first, a pressing block (25) is fixed at the top end of a vertical rod of the first L-shaped supporting rod (24), the bottom of the side end of the pressing block (25) is inclined, the first helical gear (30) is rotatably connected with the first shaft (29), the two sides of the first helical gear (30) are respectively attached with a second limiting ring (62), the second limiting ring (62) is fixedly sleeved on the first shaft (29), the upper end and the lower end of the first helical gear (30) are respectively provided with a first sleeve (31), the two first sleeves (31) are respectively sleeved on the guide cylinder (11) and rotatably connected with the guide cylinder, the two first sleeves (31) are respectively and symmetrically and fixedly sleeved with a third helical gear (33), the two third helical gears (33) are respectively meshed with the top and the bottom of the first helical gear (30), the top end and the bottom end of each first sleeve (31) are respectively attached with a third limiting ring (34), and the third limiting rings (34) are fixedly sleeved on the guide cylinder (11), connecting rods (35) are symmetrically fixed on the side walls of the two first sleeves (31) respectively, square guide cylinders (36) are fixed at the other ends of the two connecting rods (35) respectively, square sliding rods (38) are sleeved in the two square guide cylinders (36) respectively in a sliding manner, a stop block (37) is fixed at the bottom end of each square sliding rod (38) extending out of each square guide cylinder (36), a mounting plate (40) is fixed at the top end of each square sliding rod (36) through a first arc-shaped sliding groove (27), the square sliding rods (36) are in sliding connection with the first arc-shaped sliding grooves (27), two fourth limiting rings (39) are fixedly sleeved on the square sliding rods (36), the two fourth limiting rings (39) are respectively attached to the top surface and the bottom surface of the semicircular plate (9), threaded cylinders (42) are fixed at the side ends of the mounting plate (40), and locking bolts (43) are screwed in the threaded cylinders (, the cutting tool is characterized in that a handle (44) is fixedly mounted at the side end of the top surface of the mounting plate (40), a T-shaped guide groove (41) is formed in the top surface of the mounting plate (40), a T-shaped sliding block (63) is arranged in the T-shaped guide groove (41) in a sliding manner, a motor (45) is fixed on the top end of the T-shaped sliding block (63) extending out of the T-shaped guide groove (41), a cutting disc (47) is fixedly mounted on an output shaft of the motor (45), a first handle (46) is fixedly mounted at the side end of the motor (45), a positioning plate (48) is fixed at the center of the top surface of the semicircular plate (9), trapezoidal blocks (26) are symmetrically fixed on two sides of the top surface of the semicircular plate (9) respectively, U-shaped mounting grooves (5) are symmetrically attached to the top surface of the U-shaped plate (1) respectively, a first trapezoidal block (64) is arranged at the upper end of the, the two opposite ends of the U-shaped mounting grooves (5) are inclined, a first T-shaped sliding groove (6) is formed in the bottom surface of the U-shaped mounting groove (5), a first T-shaped sliding block (7) is arranged in the first T-shaped sliding groove (6) in a sliding mode, the bottom end of the first T-shaped sliding block (7) stretches out of the first T-shaped sliding groove (6) and stretches into the second arc-shaped sliding groove (4) to be fixedly connected with the top end of a vertical rod of the L-shaped supporting rod (20), a first spring (8) is fixedly arranged between one side of the first T-shaped sliding block (7) and the side end of the first T-shaped sliding groove (6), the first spring (8) is arranged in the first T-shaped sliding groove (6), a clamping plate (55) is arranged in the U-shaped mounting groove (5), a rotating block (56) is embedded into the side wall of the clamping plate (55), the rotating block (56) is rotatably connected with the contact part of the clamping plate (55), a threaded rod, sliding sleeve has fifth spacing collar (57) on threaded rod (58), fifth spacing collar (57) passes through screw and splint (55) lateral wall fixed connection, fifth spacing collar (57) and rotatory piece (56) laminating swivelling joint, threaded rod (58) other end pierces through U type mounting groove (5) inner wall and fixedly connected with second handle (59), threaded rod (58) and U type mounting groove (5) contact department threaded connection, splint (55) lateral wall both ends punishment first guide bar (60) of symmetry respectively, first guide bar (60) other end pierces through U type mounting groove (5) inner wall and rather than contact department sliding connection, U type mounting groove (5) one side is fixed with first thread section of thick bamboo (53), threaded connection has first locking bolt (54) in first thread section of thick bamboo (53), laminating limiting plate (65) is located to U type mounting groove (5) opposite side, the bottom end of the limiting plate (65) is fixedly connected with the top surface of the U-shaped plate (1), a second trapezoidal block (52) is fixed at the side end of the U-shaped mounting groove (5), the second trapezoidal block (52) is arranged at the position of the lower end of the pressing block (25), a semicircular cover plate (50) is attached to the bottom surface of the U-shaped plate (1), second T-shaped sliders (49) are symmetrically fixed to two sides of the top surface of the semicircular cover plate (50) respectively, second T-shaped sliding grooves (28) for the two second T-shaped sliders (49) to slide are symmetrically formed in two sides of the bottom surface of the U-shaped plate (1), the two second T-shaped sliders (49) are slidably arranged in the two second T-shaped sliding grooves (28) respectively, a connecting plate (51) is fixed to the side end of the semicircular cover plate (50), and the bottom end of the side wall of the connecting plate (.

2. The auxiliary platform for multi-angle welding of the square steel pipes as claimed in claim 1, wherein: the motor (45) is electrically connected with an external power supply through a lead.

3. The auxiliary platform for multi-angle welding of the square steel pipes as claimed in claim 1, wherein: the hydraulic cylinder (14) and the first hydraulic cylinder (66) are respectively connected with a pipeline of the hydraulic station (12) through a conduit.

4. The auxiliary platform for multi-angle welding of the square steel pipes as claimed in claim 1, wherein: the top surface of the arc-shaped part of the U-shaped plate (1) and the top surface of the semicircular plate (9) are marked with round angle scales.

Technical Field

The invention relates to the field of steel pipe processing, in particular to an auxiliary platform for multi-angle welding of square steel pipes.

Background

Various welding modes such as butt joint, circumferential welding and the like of steel pipes require that the interface surfaces of two welded steel pipes are flush and the central lines of the steel pipes are aligned, the existing steel pipe welding platform mostly aims at the welding work of two steel pipes which are aligned in parallel, the welding platform only needs to align the surfaces of the welding positions of the two steel pipes and clamp and fix the two steel pipes to carry out the welding work, however, when the two steel pipes are required to be welded at an angle, not only is the included angle of the welding positions of the two steel pipes required to be accurately adjusted, but also the pipe orifices of the two steel pipes at the welding positions need to be obliquely cut to form a part, so that the pipe orifices of the two steel pipes at the welding positions are stably contacted, and the two steel pipes can be welded at an angle, the existing steel pipe welding platform mostly has the function of fixedly clamping the two steel pipes, very easily lead to two mouth of pipe cutting angle inconsistent, can not guarantee to cut just in time when inclining the cutting mouth of pipe moreover, cut many and cut and all can lead to two steel pipe welding departments to be misaligned, can lead to the steel pipe after the welding to be unqualified even, and then seriously influence welding efficiency.

Disclosure of Invention

In order to solve the existing problems, the invention provides an auxiliary platform for multi-angle welding of square steel pipes.

The invention is realized by the following technical scheme:

an auxiliary platform for multi-angle welding of square steel pipes comprises a U-shaped plate, wherein a base is arranged at the right lower end of the U-shaped plate, the bottom end of the U-shaped plate is fixedly connected with the top surface of the base through a plurality of supporting legs, a guide cylinder is fixed on the top surface of the base, a hydraulic station is arranged at one side of the guide cylinder and is fixedly arranged on the top surface of the base, a fixed plate is arranged at the other side of the guide cylinder, the fixed plate is fixedly arranged on the top surface of the base, a hydraulic cylinder is fixedly arranged on the side wall of the fixed plate, a guide rod is sleeved in the guide cylinder in a sliding mode, a semicircular plate is fixedly arranged at the top end of the guide rod in a stretching mode, a first hydraulic cylinder is arranged at the right lower end of the semicircular plate and is fixedly arranged on the top surface of the base, the, the top surface of the semicircular plate is provided with an arc-shaped chute and a first arc-shaped chute, the axial lead of the arc-shaped chute and the first arc-shaped chute is consistent with the axial lead of the semicircular plate, the radius of the first arc-shaped chute is smaller than that of the arc-shaped chute, the U-shaped plate at the right upper end of the arc-shaped chute is provided with a second arc-shaped chute, the axial lead of the second arc-shaped chute is consistent with the axial lead of the arc-shaped chute, the radius of the second arc-shaped chute is consistent with that of the arc-shaped chute, two sides of the guide cylinder are respectively fixed with a shaft and a first shaft, the shaft and the first shaft are respectively sleeved with a helical gear and a first helical gear, the helical gear is rotationally connected with the shaft, two sides of the helical gear are respectively attached with a limiting ring, the limiting rings are fixedly sleeved on the shaft, the upper end and the lower end of the guide cylinder are respectively provided with, the two second helical gears are respectively meshed with the top and the bottom of the helical gears, the top and the bottom of the sleeve are respectively attached with a first limiting ring, the first limiting ring is fixedly sleeved on the guide cylinder, L-shaped support rods are respectively and symmetrically fixed on the side walls of the two sleeves, the top end of a vertical rod of each L-shaped support rod passes through the arc-shaped chute and extends into the second arc-shaped chute, the contact part of the vertical rod of each L-shaped support rod and the arc-shaped chute as well as the contact part of the second arc-shaped chute are both in sliding connection, a check ring is fixedly sleeved on the vertical rod of each L-shaped support rod, a square sleeve is sleeved on the vertical rod of each L-shaped support rod between the check ring and the semicircular plate, the vertical rod of each L-shaped support rod is a square rod, the square sleeve is in sliding connection with the vertical rod of each L-shaped support rod, a spring is fixedly arranged between the bottom end of, a pressing block is fixed at the top end of a vertical rod of the first L-shaped supporting rod, the bottom of the side end of the pressing block is inclined, the first helical gear is rotationally connected with a first shaft, the two sides of the first helical gear are respectively attached with a second limiting ring, the second limiting ring is fixedly sleeved on the first shaft, the upper end and the lower end of the first helical gear are respectively provided with a first sleeve, the two first sleeves are both sleeved on a guide cylinder and rotationally connected with the guide cylinder, the two first sleeves are respectively and symmetrically and fixedly sleeved with third helical gears, the two third helical gears are respectively meshed with the top and the bottom of the first helical gear, the top end and the bottom of each first sleeve are respectively attached with a third limiting ring, the third limiting rings are fixedly sleeved on the guide cylinder, the side walls of the two first sleeves are respectively and symmetrically fixed with connecting rods, the other ends of the two connecting rods are respectively and fixedly provided with a square guide cylinder, and square sliding, a stop block is fixedly arranged at the bottom end of the square sliding rod, a mounting plate is fixedly arranged at the top end of the square sliding rod by penetrating through a first arc-shaped sliding groove, the square sliding rod is connected with the first arc-shaped sliding groove in a sliding manner, two fourth limiting rings are fixedly sleeved on the square sliding rod and are respectively arranged at the top surface and the bottom surface of the semicircular plate in a laminating manner, a threaded cylinder is fixedly arranged at the side end of the mounting plate, a locking bolt is screwed in the threaded cylinder, a handle is fixedly arranged at the side end of the top surface of the mounting plate, a T-shaped guide groove is formed in the top surface of the mounting plate, a T-shaped sliding block is arranged in the T-shaped guide groove in a sliding manner, a motor is fixedly arranged at the top end of the T-shaped sliding block by extending out of the T-shaped guide groove, a cutting disc is fixedly arranged on, trapezoidal blocks are symmetrically fixed on two sides of the top surface of the semicircular plate respectively, U-shaped mounting grooves are symmetrically attached to the top surface of the U-shaped plate respectively, a first trapezoidal block is arranged at the right upper end of the trapezoidal block, the top end of the first trapezoidal block is fixedly connected with one side of the bottom end of the U-shaped mounting groove, one ends of the two U-shaped mounting grooves opposite to each other are inclined, a first T-shaped sliding groove is formed in the bottom surface of the U-shaped mounting groove, a first T-shaped sliding block is arranged in the first T-shaped sliding groove in a sliding manner, the bottom end of the first T-shaped sliding block extends out of the first T-shaped sliding groove and extends into a second arc-shaped sliding groove to be fixedly connected with the top end of a vertical rod of the L-shaped supporting rod, a first spring is fixedly arranged between one side of the first T-shaped sliding block and the side end of the first T-shaped sliding groove, a clamping plate is arranged in the U-shaped mounting groove, a threaded rod is fixed at the center of the side wall of the rotating block, a fifth limiting ring is sleeved on the threaded rod in a sliding manner and fixedly connected with the side wall of the clamping plate through a screw, the fifth limiting ring is attached to the rotating block in a rotating manner, the other end of the threaded rod penetrates through the inner wall of the U-shaped mounting groove and is fixedly connected with a second handle, the threaded rod is in threaded connection with the contact part of the U-shaped mounting groove, first guide rods are respectively symmetrical at two ends of the side wall of the clamping plate, the other end of each first guide rod penetrates through the inner wall of the U-shaped mounting groove and is in sliding connection with the contact part of the U-shaped mounting groove, a first threaded cylinder is fixed at one side of the U-shaped mounting groove, a first locking bolt is screwed in the first threaded cylinder, a limiting plate is attached to the other side of the U-shaped mounting groove, the bottom end of, the second trapezoidal piece sets up the department under the briquetting, the laminating of U template bottom surface has semi-circular apron, semi-circular apron top surface both sides symmetry respectively are fixed with second T type slider, U template bottom surface both sides symmetry respectively are seted up and are supplied two gliding second T type spouts of second T type slider, and two gliding settings are in two second T type spouts respectively to two second T type sliders, semi-circular apron side is fixed with the connecting plate, connecting plate lateral wall bottom department and the flexible end fixed connection of pneumatic cylinder.

Preferably, the motor is electrically connected with an external power supply through a wire.

Preferably, the hydraulic cylinder and the first hydraulic cylinder are respectively connected with a hydraulic station pipeline through a conduit.

Preferably, the top surface of the arc-shaped part of the U-shaped plate and the top surface of the semicircular plate are marked with round angle scales.

Compared with the prior art, the invention has the beneficial effects that: the device can effectively ensure the consistency of the cutting angles of two pipe orifices to be cut by cutting the opposite ends of two square steel pipes to be welded through the specified angles of the two cutting disks by arranging the two U-shaped mounting grooves and the two mounting plates, thereby effectively achieving the aim of accurately cutting the two pipe orifices, ensuring that the welding parts of the two steel pipes can be just aligned, and ensuring that the two steel pipes after being cut can accurately adjust the welding angles through the two U-shaped mounting grooves, because the opposite ends of the two square steel pipes are accurately cut according to the welding angles, when the welding angles of the two steel pipes can be adjusted through the two U-shaped mounting grooves, one ends of the welding parts of the two square steel pipes can be naturally and tightly attached together, providing convenience for the welding work of the square steel pipes, and simultaneously effectively preventing welding scraps generated in the welding process from falling onto the motor and the cutting disks by arranging the semicircular cover plates, the damage of the motor and the cutting disc is avoided.

Drawings

FIG. 1 is a block diagram of the structure of the present invention;

FIG. 2 is a top view of the structure of FIG. 1 in accordance with the present invention;

FIG. 3 is a side view of the present invention shown in FIG. 1;

FIG. 4 is a cross-sectional view of a portion of the structure of FIG. 1 in accordance with the present invention;

fig. 5 is a schematic diagram of the operation of the structure of fig. 1 according to the present invention.

In the figure: the hydraulic support comprises a U-shaped plate 1, supporting legs 2, a base 3, a second arc-shaped chute 4, a U-shaped mounting groove 5, a first T-shaped chute 6, a first T-shaped sliding block 7, a first spring 8, a semi-circular plate 9, an arc-shaped chute 10, a guide cylinder 11, a hydraulic station 12, a fixing plate 13, a hydraulic cylinder 14, a guide rod 15, a shaft 16, a helical gear 17, a sleeve 18, a second helical gear 19, an L-shaped support rod 20, a retainer ring 21, a spring 22, a square sleeve 23, a first L-shaped support rod 24, a pressing block 25, a trapezoidal block 26, a first arc-shaped chute 27, a second T-shaped chute 28, a first shaft 29, a first helical gear 30, a first sleeve 31, a first limit ring 32, a third helical gear 33, a third limit ring 34, a connecting rod 35, a square guide cylinder 36, a stop 37, a square sliding rod 38, a fourth limit ring 39, a mounting plate 40, a T-shaped guide groove 41, a threaded cylinder 42, The cutting device comprises a first handle 46, a cutting disc 47, a positioning plate 48, a second T-shaped sliding block 49, a semicircular cover plate 50, a connecting plate 51, a second trapezoidal block 52, a first threaded barrel 53, a first locking bolt 54, a clamping plate 55, a rotating block 56, a fifth limiting ring 57, a threaded rod 58, a second handle 59, a first guide rod 60, a limiting ring 61, a second limiting ring 62, a T-shaped sliding block 63, a first trapezoidal block 64, a limiting plate 65 and a first hydraulic cylinder 66.

Detailed Description

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

as shown in figures 1, 2, 3, 4 and 5, the auxiliary platform for multi-angle welding of the square steel pipe comprises a U-shaped plate 1, wherein a base 3 is arranged at the lower end of the U-shaped plate 1, the bottom end of the U-shaped plate 1 is fixedly connected with the top surface of the base 3 through a plurality of support legs, a guide cylinder 11 is fixed on the top surface of the base 3, a hydraulic station 12 is arranged on one side of the guide cylinder 11, the hydraulic station 12 is fixedly arranged on the top surface of the base 3, a fixing plate 13 is arranged on the other side of the guide cylinder 11, the fixing plate 13 is fixedly arranged on the top surface of the base 3, a hydraulic cylinder 14 is fixedly arranged on the side wall of the fixing plate 13, a guide rod 15 is sleeved in the guide cylinder 11 in a sliding manner, a semicircular plate 9 is fixed on the guide cylinder 11 extending out of the top end of the guide rod 15, a first hydraulic cylinder, the telescopic end of the first hydraulic cylinder 66 is fixedly connected with the bottom surface of the semi-circular plate 9, the axial lead of the guide rod 15 is consistent with the axial lead of the semi-circular plate 9, the top surface of the semi-circular plate 9 is provided with an arc-shaped chute 10 and a first arc-shaped chute 27, the axial leads of the arc-shaped chute 10 and the first arc-shaped chute 27 are consistent with the axial lead of the semi-circular plate 9, the radius of the first arc-shaped chute 27 is smaller than that of the arc-shaped chute 10, the U-shaped plate 1 at the right upper end of the arc-shaped chute 10 is provided with a second arc-shaped chute 4, the axial lead of the second arc-shaped chute 4 is consistent with the axial lead of the arc-shaped chute 10, the radius of the second arc-shaped chute 4 is consistent with that of the arc-shaped chute 10, the two sides of the guide cylinder 11 are respectively fixed with a shaft 16 and a first shaft 29, the shaft 16 and the first, the two sides of the helical gear 17 are respectively attached with a limiting ring 61, the limiting rings 61 are fixedly sleeved on the shaft 16, the upper end and the lower end of the helical gear 17 are respectively provided with a sleeve 18, the two sleeves 18 are both sleeved on the guide cylinder 11 and are in rotary connection with the guide cylinder, the two sleeves 18 are respectively and symmetrically and fixedly sleeved with a second helical gear 19, the two second helical gears 19 are respectively meshed with the top and the bottom of the helical gear 17, the top end and the bottom end of each sleeve 18 are respectively attached with a first limiting ring 32, the first limiting rings 32 are fixedly sleeved on the guide cylinder 11, the side walls of the two sleeves 18 are respectively and symmetrically fixed with L-shaped supporting rods 20, the top ends of the vertical rods of the L-shaped supporting rods 20 penetrate through the arc-shaped sliding grooves 10 and extend into the second arc-shaped sliding grooves 4, the contact parts of the vertical rods of the L-shaped supporting rods 20 and the arc-shaped sliding grooves 10 and the, the vertical rod of the L-shaped supporting rod 20 between the retainer ring 21 and the semicircular plate 9 is sleeved with a square sleeve 23, the vertical rod of the L-shaped supporting rod 20 is a square rod, the square sleeve 23 is in sliding connection with the vertical rod of the L-shaped supporting rod 20, a spring 22 is fixedly arranged between the bottom end of the square sleeve 23 and the top surface of the retainer ring 21, the spring 22 is sleeved on the vertical rod of the L-shaped supporting rod 20, the side wall of the square sleeve 23 is fixedly provided with a first L-shaped supporting rod 24, the top end of the vertical rod of the first L-shaped supporting rod 24 is fixedly provided with a pressing block 25, the bottom of the side end of the pressing block 25 is inclined, the first helical gear 30 is in rotary connection with a first shaft 29, the two sides of the first helical gear 30 are respectively jointed with a second limiting ring 62, the second limiting ring 62 is fixedly sleeved on the first shaft 29, the upper end and the lower end of the first helical gear 30 are respectively provided with a first, the two first sleeves 31 are respectively and symmetrically fixedly sleeved with third bevel gears 33, the two third bevel gears 33 are respectively meshed with the top and the bottom of the first bevel gear 30, the top and the bottom of the first sleeve 31 are respectively and fixedly jointed with third limiting rings 34, the third limiting rings 34 are fixedly sleeved on the guide cylinders 11, the side walls of the two first sleeves 31 are respectively and symmetrically fixed with connecting rods 35, the other ends of the two connecting rods 35 are respectively and fixedly provided with square guide cylinders 36, square slide rods 38 are respectively and slidably sleeved in the two square guide cylinders 36, the bottom ends of the square slide rods 38 extend out of the square guide cylinders 36 and are fixedly provided with stoppers 37, the top ends of the square slide rods 36 penetrate through the first arc-shaped slide grooves 27 and are fixedly provided with mounting plates 40, the square slide rods 36 are in sliding connection with the first arc-shaped slide grooves 27, the square slide rods 36 are respectively and fixedly sleeved with two fourth limiting rings 39, the two fourth limiting rings 39 are respectively and fixedly jointed with the, a threaded cylinder 42 is fixed at the side end of the mounting plate 40, a locking bolt 43 is screwed in the threaded cylinder 42, a handle 44 is fixedly mounted at the side end of the top surface of the mounting plate 40, a T-shaped guide groove 41 is formed in the top surface of the mounting plate 40, a T-shaped slider 63 is slidably arranged in the T-shaped guide groove 41, a motor 45 is fixed at the position, extending out of the T-shaped guide groove 41, of the top end of the T-shaped slider 63, a cutting disc 47 is fixedly mounted on an output shaft of the motor 45, a first handle 46 is fixedly mounted at the side end of the motor 45, a positioning plate 48 is fixed at the center of the top surface of the semicircular plate 9, trapezoidal blocks 26 are symmetrically fixed at two sides of the top surface of the semicircular plate 9 respectively, U-shaped mounting grooves 5 are symmetrically attached to the top surface of the U-shaped plate 1 respectively, a first trapezoidal block 64 is arranged at the upper, the opposite ends of the two U-shaped mounting grooves 5 are inclined, a first T-shaped sliding groove 6 is formed in the bottom surface of each U-shaped mounting groove 5, a first T-shaped sliding block 7 is arranged in each first T-shaped sliding groove 6 in a sliding mode, the bottom end of each first T-shaped sliding block 7 extends out of each first T-shaped sliding groove 6 and extends into each second arc-shaped sliding groove 4 to be fixedly connected with the top end of a vertical rod of each L-shaped supporting rod 20, a first spring 8 is fixedly arranged between one side of each first T-shaped sliding block 7 and the side end of each first T-shaped sliding groove 6, each first spring 8 is arranged in each first T-shaped sliding groove 6, a clamping plate 55 is arranged in each U-shaped mounting groove 5, a rotating block 56 is embedded in the side wall of each clamping plate 55, the rotating block 56 is rotatably connected with the contact part of each clamping plate 55, a threaded rod 58 is fixedly arranged at the center of the side wall of each rotating block 56, a fifth limiting ring 57 slides, the fifth limiting ring 57 is in fit and rotary connection with the rotating block 56, the other end of the threaded rod 58 penetrates through the inner wall of the U-shaped mounting groove 5 and is fixedly connected with the second handle 59, the threaded rod 58 is in threaded connection with the contact part of the U-shaped mounting groove 5, the two ends of the side wall of the clamping plate 55 are respectively symmetrical to the first guide rods 60, the other end of the first guide rod 60 penetrates through the inner wall of the U-shaped mounting groove 5 and is in sliding connection with the contact part of the U-shaped mounting groove 5, a first threaded cylinder 53 is fixed on one side of the U-shaped mounting groove 5, a first locking bolt 54 is screwed in the first threaded cylinder 53, a limiting plate 65 is attached to the other side of the U-shaped mounting groove 5, the bottom end of the limiting plate 65 is fixedly connected with the top surface of the U-shaped plate 1, a second trapezoidal block 52 is fixed on the side end of the U-shaped mounting groove 5, the two sides of the top surface of the semicircular cover plate 50 are symmetrically fixed with second T-shaped sliding blocks 49 respectively, the two sides of the bottom surface of the U-shaped plate 1 are symmetrically provided with second T-shaped sliding grooves 28 for the two second T-shaped sliding blocks 49 to slide respectively, the two second T-shaped sliding blocks 49 are arranged in the two second T-shaped sliding grooves 28 in a sliding mode respectively, a connecting plate 51 is fixed to the side end of the semicircular cover plate 50, and the bottom end of the side wall of the connecting plate 51 is fixedly connected with the telescopic end of the hydraulic cylinder 14.

The motor 45 is electrically connected to an external power source through a wire.

Hydraulic cylinder 14 and first hydraulic cylinder 66 are each plumbed to hydraulic station 12 via a conduit.

The top surface of the arc-shaped part of the U-shaped plate 1 and the top surface of the semicircular plate 9 are marked with round angle scales.

The working principle is as follows: when the invention is used, firstly, the telescopic end of the hydraulic cylinder 14 is controlled to extend to the maximum extent, when the telescopic end of the hydraulic cylinder 14 extends, the semicircular cover plate 50 is pushed by the connecting plate 51, so that the semicircular cover plate 50 moves towards the opening end of the U-shaped plate 1, when the telescopic end of the hydraulic cylinder 14 extends to the maximum extent, as shown in fig. 2, the semicircular cover plate 50 is positioned at the side end of the semicircular plate 9, then the telescopic end of the first hydraulic cylinder 66 is controlled to extend to the maximum extent, at the moment, the telescopic end of the first hydraulic cylinder 66 pushes the semicircular plate 9 to ascend, as the two fourth limiting rings 39 arranged on the square slide rods 38 are clamped on the semicircular plate 9, the semicircular plate 9 can synchronously drive the square slide rods 38 to ascend, when the telescopic end of the first hydraulic cylinder 66 extends to the maximum extent, as shown in fig. 1, the two square slide rods 38 can synchronously drive the two mounting plates 40 to ascend, so that the two motors 45 and the two cutting discs 47 extend out of the top of the U-shaped plate 1, the trapezoidal blocks 26 on the two sides of the top surface of the semicircular plate 9 respectively extrude the inclined surfaces of the two first trapezoidal blocks 64, so that the two first trapezoidal blocks 64 respectively drive the two U-shaped mounting grooves 5 to move towards two sides, the total length of the movement of the two U-shaped mounting grooves 5 is equal to the thickness of the positioning plate 48, at the moment, the two square steel pipes to be welded are respectively placed into the two U-shaped mounting grooves 5, and the square steel pipes are pushed to make the side ends of the square steel pipes fit with the side walls of the positioning plate 48, and then the two threaded rods 58 are respectively screwed through the two second handles 59, so that the two clamping plates 55 respectively clamp the square steel pipes in the two U-shaped mounting grooves 5, because the two U-shaped mounting grooves 5 are positioned on the same line, the two square steel pipes are also, the mounting plates 40 are pushed by the handle 44, when one mounting plate 40 is pushed, the square guide cylinder 36 and the first sleeve 31 are synchronously driven by the square slide rod 38 at the bottom of the mounting plate to rotate by taking the guide cylinder 11 as an axis, when one first sleeve 31 rotates, the other first sleeve 31 is synchronously driven to rotate reversely by the third bevel gear 33 and the first bevel gear 30, when the other first sleeve 31 rotates reversely, the other mounting plate 40 is driven to rotate synchronously, so that the two mounting plates 40 rotate oppositely, the included angle between the two cutting disks 47 can be determined by the fillet scale marked on the top surface of the semicircular plate 9 when the two mounting plates 40 rotate oppositely, when the included angle between the two cutting disks 47 is consistent with the welding angle of the two square steel pipes, the mounting plate 40 is fixed by screwing the locking bolt 43, at the moment, the two motors 45 are sequentially started, and the two motors 45 are respectively pushed by the two first handles 46 to move towards the pipe orifices of the two, in the process, the two cutting discs 47 can respectively cut off the pipe orifices at the opposite ends of the two square steel pipes in an inclined manner, and the redundant parts at the welding ends of the two square steel pipes are cut off, so that the pipe orifice cutting work at the welding ends of the two steel pipes is completed. Then, the telescopic end of the first hydraulic cylinder 66 is controlled to retract to the original position, so that the semicircular plate 9, the trapezoidal blocks 26, the positioning plate 48, the motor 45 and the cutting disc 47 all descend to the lower end of the U-shaped plate 1 (as shown in fig. 1), at this time, the trapezoidal blocks 26 do not press the inclined surface of the first trapezoidal block 64, at this time, the two U-shaped mounting grooves 5 are respectively pushed by the two first springs 8, the two U-shaped mounting grooves 5 approach to each other when being pushed, so that the cut ends of the two steel pipes are attached together, when the semicircular plate 9 descends, the bottom of the semicircular plate simultaneously pushes the two square sleeves 23 to descend, the square sleeves 23 drive the pressing block 25 to descend together through the first L-shaped supporting rod 24, when the telescopic end of the first hydraulic cylinder 66 retracts to the original position, the inclined surface of the bottom of the pressing block 25 presses the inclined surface of the second trapezoidal block 52, when the inclined surfaces of the two second trapezoidal blocks, and then make two square steel pipes be the inseparable relative laminating of one end prong, at this moment unscrew first locking bolt 54, and promote a first L type branch 24, can drive U type mounting groove 5 through square sleeve 23 and L type branch 20 when first L type branch 24 is promoted and rotate with guide cylinder 11 as the axle center synchronously, L type branch 20 drives sleeve 18 to rotate synchronously simultaneously, can drive another sleeve 18 to rotate in opposite directions through second helical gear 19 and helical gear 17 synchronously when one sleeve 18 rotates, thus realize two U type mounting grooves 5 opposite direction rotation, when two U type mounting grooves 5 opposite direction rotation, can confirm the contained angle between two square steel pipes through the fillet scale marked on the top surface of U template 1, thus can accurate control the welding angle of two square steel pipes, because the relative one end of two square steel pipes has already been according to the accurate cutting of welding angle, so contained angle between two square steel pipes is unanimous with the welding angle when, the inclined plane that two square steel pipe relative one end was cut and cut can be just in time inseparable laminating, the weldment work who gives square steel pipe provides convenience, the flexible end withdrawal normal position of pneumatic cylinder 14 is controlled again afterwards, make semicircular cover plate 50 remove to the semicircle board 9 directly over, alright this moment with weld work in order to carry out to two square steel pipes, because semicircular cover plate 50 locates to be in the semi-circular board 9 directly over, the welding bits that produce among the welding process can fall on semicircular cover plate 50, the effectual welding bits that have prevented falls on motor 45 and cutting disc 47, avoid motor 45 and cutting disc 47 impaired.

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 invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.