A steel pipe welding device

Abstract

This invention discloses a steel pipe welding device, belonging to the field of argon arc welding technology. It includes a base, on which a base plate is fixedly installed. A fixing component is symmetrically arranged on the base. The base also includes a support component and an auxiliary component. The support component can cover the notch on the base plate, ensuring that the upper surface of the support plate and the base plate are on the same plane as the ground, thus facilitating pipe transfer and improving work efficiency. The fixing component, in conjunction with the adjusting unit, can flexibly adjust the fixed position of the pipe to meet different welding requirements. By setting a limiting unit, the positions of the strip rotating plate and the adjusting slide can be locked, i.e., the position of the pipe is locked, preventing displacement of the pipe during welding. Through the mutual cooperation of the support component, fixing component, and auxiliary component, the efficiency of pipe welding is significantly improved, and the consistency of welding quality is ensured.

Description

Technical Field

[0001] This invention relates to the field of argon arc welding technology, and in particular to a steel pipe welding apparatus. Background Technology

[0002] In the field of precision manufacturing, the welding of condenser tubes is particularly critical and challenging. Condenser tubes have extremely high requirements for welding processes, and traditional welding methods struggle to ensure weld strength while avoiding deformation caused by heat-affected zones, which can easily affect condensation efficiency. Argon arc welding, with its stable arc, concentrated heat, and excellent protective effect, has become an ideal choice for welding thin condenser tubes. Furthermore, argon arc welding can effectively prevent oxidation and contamination during the welding process, thus ensuring high-quality welds. However, existing argon arc welding equipment often falls short when fixing thin tubes, and the positioning, fixing, and welding of the tubes often require manual operation. This not only increases labor intensity and reduces welding efficiency but also easily leads to welding position deviations, thus affecting welding quality. Therefore, this invention provides a steel pipe welding device. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a steel pipe welding device that overcomes the problem that the positioning, fixing, and welding of pipe fittings often require manual operation, which increases labor intensity, reduces welding efficiency, and easily leads to welding position deviations, thereby affecting welding quality.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a steel pipe welding device, comprising a base, a base plate fixedly installed on the base, and fixing components symmetrically arranged on the base. Each fixing component includes an adjusting slide plate, and each adjusting slide plate is provided with two fixed supports. Each fixed support plate is fixedly provided with a support strip plate, and each fixed support plate is also symmetrically slidably mounted with an adjusting slide block. A strip-shaped rotating plate is symmetrically rotatably mounted on the adjusting slide block. The support strip plate and the strip-shaped rotating plate are used to fix the pipe fitting. The fixed support plate is also provided with an adjusting unit and a limiting unit. The adjusting unit is used to adjust the position of the strip-shaped rotating plate, and the limiting unit is used to limit the position of the strip-shaped rotating plate. The base is also provided with a support component and an auxiliary component. The support component includes a support slide, and a support plate is symmetrically slidably mounted on the support slide. The support plate is used to assist in supporting the pipe fitting, and the auxiliary component is used to realize the welding of the pipe fitting.

[0005] Furthermore, a feed slide plate is slidably mounted on the base plate, and two adjustment slide plates are symmetrically slidably mounted on the feed slide plate. One of the two fixed supports on the same adjustment slide plate is fixedly mounted on the adjustment slide plate, and the other fixed support is slidably mounted on the adjustment slide plate. The two fixed supports fixedly mounted on the adjustment slide plate are located at the farthest positions.

[0006] Furthermore, springs are installed between the adjusting slide and the fixed support. Two strip-shaped rotating plates on the same adjusting slide are fixedly connected. A torsion spring is installed between the strip-shaped rotating plate and the adjusting slide. The elastic force of the torsion spring between the adjusting slide and the strip-shaped rotating plate is always less than the elastic force of the spring between the adjusting slide and the fixed support. Limiting blocks are also symmetrically fixed on the adjusting slide. The limiting blocks are used to limit the rotation position of the strip-shaped rotating plate.

[0007] Furthermore, the adjustment unit includes two symmetrically rotatably mounted drive circular plates on a fixed support. Each drive circular plate is rotatably mounted with a linkage gear. One of the two strip-shaped rotating plates on the same adjustment slide is fixedly provided with a sector rack. The linkage gear meshes with the corresponding sector rack to form a gear pair. A torsion spring is provided between the linkage gear and the drive circular plate.

[0008] Furthermore, a driven circular plate is rotatably mounted on the adjusting slide, a torsion spring is provided between the driven circular plate and the adjusting slide, two linkage short rods are fixedly mounted on the driving circular plate, two arc-shaped sliding grooves that cooperate with the linkage short rods are provided on the driven circular plate, adjusting gears are also fixedly mounted on the driven circular plate, and adjusting racks are symmetrically fixedly mounted on the base, the adjusting racks mesh with the corresponding adjusting gears to form a gear rack pair.

[0009] Furthermore, each fixed support is rotatably mounted with an adjusting pulley. A transmission assembly is provided between the adjusting pulley on the same fixed support and the two drive circular plates. An auxiliary pulley is also rotatably mounted on the fixed support that is slidably mounted on the adjusting slide plate. The auxiliary pulley is rotatably connected to the corresponding adjusting pulley. A transmission spline shaft is also rotatably mounted on the fixed support that is fixedly mounted on the adjusting slide plate. The transmission spline shaft is rotatably connected to the corresponding adjusting pulley. A torsion spring is provided between the transmission spline shaft and the auxiliary pulley. The transmission spline shaft and the corresponding auxiliary pulley form a spline sliding fit. Two auxiliary short rods are fixedly provided on the adjusting pulley of the fixed support that is slidably mounted on the adjusting slide plate. Two arc-shaped grooves that cooperate with the auxiliary short rods are provided on the auxiliary pulley.

[0010] Furthermore, each limiting unit includes a limiting strip plate slidably mounted on a fixed support. A second limiting ratchet ring is symmetrically slidably mounted on the limiting strip plate. A first limiting ratchet ring is fixedly mounted on the second limiting ratchet ring. A first limiting ratchet wheel is fixedly mounted on the side of the linkage gear. When the first limiting ratchet wheel and the corresponding first limiting ratchet ring engage, they form a ratchet mechanism. A second limiting ratchet wheel is fixedly mounted on the side of the drive disc. When the second limiting ratchet wheel and the corresponding second limiting ratchet ring engage, they form a ratchet mechanism. A limiting screw is rotatably mounted on each fixed support. The limiting screw and the corresponding limiting strip plate form a helical pair. A limiting spline shaft is fixedly mounted on the limiting screw on the fixed support fixedly mounted on the adjusting slide plate. The limiting spline shaft and the corresponding limiting screw form a spline sliding fit.

[0011] Furthermore, the support carriage is slidably mounted on the base, and the support plate is provided with a square notch to accommodate the movement of the support strip. A positioning electric cylinder is also fixedly mounted on the base, and a positioning plate is fixedly mounted on the piston rod end of the positioning electric cylinder. The positioning plate is used to assist in positioning the pipe fitting.

[0012] Furthermore, the auxiliary components include two auxiliary carriages symmetrically slidably mounted on the base plate. Each auxiliary carriage is rotatably mounted with a semi-circular toothed ring. When the two semi-circular toothed rings are engaged, they form a complete toothed ring. An auxiliary electric cylinder is fixedly mounted on one of the two semi-circular toothed rings, and an argon arc welding gun is fixedly mounted on the piston rod end of the auxiliary electric cylinder.

[0013] The beneficial effects of this invention compared with the prior art are: (1) By setting a support component, this invention can cover the gap on the base plate, so that the upper surface of the support plate and the base plate and the ground are on the same plane, thereby facilitating the transfer of pipe fittings and improving work efficiency; (2) By setting a fixing component, this invention can flexibly adjust the fixed position of the pipe fittings with the cooperation of the adjustment unit to meet different welding requirements; (3) By setting a limiting unit, this invention can lock the position of the strip rotating plate and the adjustment slide, that is, lock the position of the pipe fittings and prevent the position of the pipe fittings from shifting during the welding process; (4) By cooperating with the support component, the fixing component and the auxiliary component, this invention significantly improves the efficiency of pipe fitting welding and also ensures the consistency of welding quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0016] Figure 3 This is a schematic diagram of the structure of the support component of the present invention.

[0017] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle.

[0018] Figure 5 This is a side view of the overall structure of the present invention.

[0019] Figure 6 This is a schematic diagram of the structure of the fixing component of the present invention.

[0020] Figure 7 This is a schematic diagram of the structure of the adjusting slide plate of the present invention.

[0021] Figure 8 for Figure 7 A magnified view of a portion of point C.

[0022] Figure 9 This is a schematic diagram of the structure of the adjusting slide of the present invention.

[0023] Figure 10 for Figure 9 A magnified view of a portion of point D.

[0024] Figure 11 This is a schematic diagram of the structure of the support strip of the present invention.

[0025] Figure 12 for Figure 11 A magnified view of a portion of point E in the middle.

[0026] Figure 13 This is a schematic diagram of the structure of the adjusting rack of the present invention.

[0027] Figure 14 This is a schematic diagram of the structure of the transmission spline shaft of the present invention.

[0028] Figure 15 for Figure 14 A magnified view of a portion of point F in the middle.

[0029] Figure 16 This is a schematic diagram of the limiting unit of the present invention.

[0030] Figure 17 This is a cross-sectional view of the structure at the driving circular plate of the present invention.

[0031] Reference numerals: 101-Base; 102-Base plate; 103-Auxiliary slide; 104-Auxiliary motor; 105-Auxiliary lead screw; 106-Support plate; 107-Support slide; 108-Feed lead screw; 109-Feed motor; 110-Semi-circular gear ring; 111-Shift gear; 112-Auxiliary electric cylinder; 113-Argon arc welding torch; 114-Shift motor; 115-Support strip; 116-Positioning plate; 117-Double-head motor; 118-Allowing lead screw; 119-Linkage assembly; 120-Positioning electric cylinder; 121-Feed slide plate; 122-Adjusting slide plate; 123-Adjusting lead screw; 124-Adjusting motor; 125-Fixed support; 126-Allowing electric cylinder; 127-Strip rotating plate; 128 - Drive spline shaft; 129 - Shifting screw; 130 - Limiting spline shaft; 131 - Shifting motor; 132 - Limiting motor; 133 - Limiting strip; 134 - Limiting screw; 135 - Limiting ratchet two; 136 - Drive belt; 137 - Fixed motor; 138 - Adjusting pulley; 139 - Auxiliary pulley; 140 - Auxiliary short rod; 141 - Adjusting slide; 142 - Adjusting rack; 143 - Adjusting gear; 144 - Linkage gear; 145 - Drive round plate; 146 - Driven round plate; 147 - Drive gear; 148 - Drive pulley; 149 - Limiting block; 150 - Sector rack; 151 - Linkage short rod; 152 - Limiting ratchet ring one; 153 - Limiting ratchet one; 154 - Limiting ratchet ring two. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] Example: Reference Figures 1-17A steel pipe welding device includes a base 101, on which a base plate 102 is fixedly installed. During installation, the upper surface of the base plate 102 is flush with the ground to facilitate pipe transfer. A support assembly is provided on the base 101, including a support slide 107 slidably mounted on the base 101. Relief cylinders 126 are symmetrically fixedly mounted on the base 101, with their piston rods fixedly connected to the support slide 107. Support plates 106 are symmetrically slidably mounted on the support slide 107, providing auxiliary support for the pipe. A symmetrically rotatably mounted clearance screw 118 is mounted on the slide 107. The clearance screw 118 and the corresponding support plate 106 form a helical pair. A double-headed motor 117 is also fixedly mounted on the support slide 107. The two ends of the output shaft of the double-headed motor 117 are respectively fixedly connected to the corresponding clearance screw 118. A positioning electric cylinder 120 is also fixedly mounted on the base 101. A positioning plate 116 is fixedly mounted on the piston rod end of the positioning electric cylinder 120. The positioning plate 116 is used to assist in positioning the pipe. The positioning plate 116 is located at the center of the two support plates 106. The support plates 106 are movably connected to the positioning plate 116.

[0034] In the initial position, the two support plates 106 are at their closest point, forming a support panel. The support slide 107 is at its closest point to the base plate 102. At this point, the upper surfaces of the support plates 106 and the base plate 102 are on the same plane. To adjust the position of the support plates 106, first, the two clearance cylinders 126 are activated to move the support slide 107 downwards, and the two support plates 106 move downwards synchronously, eventually making the upper surfaces of the support plates 106 and the lower surfaces of the base plate 102 on the same plane. Then, the dual-head motor 117 is activated to drive the two clearance screws 118 to rotate synchronously, thereby moving the two support plates 106 away from each other, thus unfolding the two support plates 106. Finally, the positioning cylinder 120 is activated to move the positioning plate 116 up and down, thus adjusting the position of the positioning plate 116.

[0035] The base 101 is symmetrically equipped with fixing components, each including an adjusting slide plate 122. A feed slide plate 121 is slidably mounted on the base plate 102, with two adjusting slide plates 122 symmetrically slidably mounted on the feed slide plate 121. Feed screws 108 are symmetrically rotatably mounted on the base plate 102, each feed screw 108 forming a helical pair with the feed slide plate 121. A feed motor 109 is fixedly mounted on the base plate 102, and the output shaft of the feed motor 109 is fixedly connected to the corresponding feed screw 108. A linkage group 119 is provided between the two feed screws 108. The linkage group 119 includes two pulleys and a belt. The two pulleys in the linkage group 119 are fixedly installed on the two feed screws 108 respectively. The belt in the linkage group 119 is located between the two pulleys. When the feed motor 109 is started, it drives the feed screws 108 to rotate. Under the action of the linkage group 119, the two feed screws 108 rotate, so that the feed slide plate 121 moves up and down relative to the base 101.

[0036] Two adjusting screws 123 are rotatably mounted on the feed slide plate 121. The adjusting screws 123 and the corresponding fixed support 125 form a helical pair. Two adjusting motors 124 are also fixedly mounted on the feed slide plate 121. The output shaft of the adjusting motor 124 is fixedly connected to the corresponding adjusting screw 123. When the adjusting motor 124 is started, it drives the adjusting screw 123 to rotate, so that the fixed support 125 slides relative to the fixed support 125.

[0037] Each adjustment slide plate 122 is provided with two fixed supports 125. One of the two fixed supports 125 on the same adjustment slide plate 122 is fixedly installed on the adjustment slide plate 122, and the other fixed support 125 is slidably installed on the adjustment slide plate 122. The two fixed supports 125 fixedly installed on the adjustment slide plate 122 are located at the farthest position. Each adjustment slide plate 122 is rotatably installed with a displacement screw 129. The displacement screw 129 and the fixed support 125 slidably installed on the adjustment slide plate 122 form a helical pair. A displacement motor 131 is also fixedly installed on the adjustment slide plate 122. The output shaft of the displacement motor 131 is fixedly connected to the corresponding displacement screw 129. Each fixed support 125 is fixedly provided with a support plate 115. The support plate 106 is provided with a square notch to accommodate the movement of the support plate 115.

[0038] In the initial position, the support slide 107 is located closest to the lower surface of the base 101, and the two fixed supports 125 slidably mounted on the adjustment slide plate 122 are located closest to each other. At this time, the upper surface of the support strip 115 and the upper surface of the support plate 106 are on the same plane, and the support strip 115 is located at the corresponding directional notch on the support plate 106.

[0039] A symmetrically slidable adjusting slide 141 is mounted on the fixed support 125. A spring is provided between the adjusting slide 141 and the fixed support 125. A strip rotating plate 127 is symmetrically rotatably mounted on the adjusting slide 141. The support plate 115 and the strip rotating plate 127 are used to fix the pipe fitting. The two strip rotating plates 127 on the same adjusting slide 141 are fixedly connected. A torsion spring is provided between the strip rotating plate 127 and the adjusting slide 141. One end of the torsion spring is fixedly connected to the strip rotating plate 127, and the other end of the torsion spring is fixedly connected to the linkage short rod 151. The elastic force of the torsion spring between the adjusting slide 141 and the strip rotating plate 127 is always less than the elastic force of the spring between the adjusting slide 141 and the fixed support 125. Limiting blocks 149 are also symmetrically fixed on the adjusting slide 141. The limiting blocks 149 are used to limit the rotation position of the strip rotating plate 127.

[0040] An adjustment unit is provided on the fixed support 125. The adjustment unit includes two drive circular plates 145 symmetrically rotatably mounted on the fixed support 125. A linkage gear 144 is rotatably mounted on each drive circular plate 145. A torsion spring is provided between the linkage gear 144 and the drive circular plate 145. One end of the torsion spring is fixedly connected to the linkage gear 144, and the other end of the torsion spring is fixedly connected to the drive circular plate 145. One of the two strip rotating plates 127 on the same adjustment slide 141 is fixedly provided with a sector rack 150. The linkage gear 144 meshes with the corresponding sector rack 150 to form a gear pair.

[0041] In the initial position, the springs between the adjusting slide 141 and the fixed support 125, the torsion springs between the strip rotating plate 127 and the adjusting slide 141, and the torsion springs between the linkage gear 144 and the drive circular plate 145 are not compressed. At this time, the two adjusting slides 141 are at the farthest position, and the strip rotating plate 127 is in a horizontal state.

[0042] The two drive discs 145 are driven to rotate in opposite directions. Under the action of the torsion spring between the linkage gear 144 and the drive disc 145, the two linkage gears 144 rotate synchronously. Then, under the action of the sector rack 150, the ends of the two strip discs 127 on the same fixed support 125 that are furthest apart rotate upward. The torsion spring between the strip disc 127 and the adjusting slide 141 is compressed, and finally the strip disc 127 rotates to contact the corresponding limit block 149. Under the action of the limit block 149, the strip disc 127 can no longer rotate. At this time, the strip disc 127 rotates 120 degrees relative to the fixed support 125. The drive disc 145 continues to rotate. At this time, the strip disc 127 can no longer rotate under the action of the limit block 149, that is, the linkage gear 144 can no longer rotate. Therefore, the drive disc 145 rotates relative to the linkage gear 144, and the torsion spring between the linkage gear 144 and the drive disc 145 is compressed.

[0043] A driven circular plate 146 is rotatably mounted on the adjusting slide 141. A torsion spring is provided between the driven circular plate 146 and the adjusting slide 141. One end of the torsion spring is fixedly connected to the adjusting slide 141, and the other end of the torsion spring is fixedly connected to the driven circular plate 146. Two linkage short rods 151 are fixedly provided on the driving circular plate 145. Two arc-shaped sliding grooves that cooperate with the linkage short rods 151 are provided on the driven circular plate 146. The linkage short rods 151 and the corresponding arc-shaped sliding grooves on the driven circular plate 146 are movably connected. An adjusting gear 143 is also fixedly mounted on the driven circular plate 146. An adjusting rack 142 is symmetrically fixedly provided on the base 101. The adjusting rack 142 meshes with the corresponding adjusting gear 143 to form a gear rack pair.

[0044] The driving disc 145 rotates. Under the action of the torsion spring between the adjusting slide block 141 and the driven disc 146, the driving disc 145 first rotates relative to the driven disc 146. At this time, the linkage rod 151 moves within the corresponding arc-shaped groove on the driven disc 146. When the driving disc 145 causes the strip-shaped rotating plate 127 to rotate until it contacts the limiting block 149 and can no longer rotate, the linkage rod 151 moves to the end of the corresponding arc-shaped groove on the driven disc 146. The driving disc 145 continues to rotate, and under the action of the linkage rod 151, the drive disc 145 rotates from the driven disc 146 to the driven disc 146. The moving circular plate 146 rotates synchronously, that is, the adjusting gear 143 on the driven circular plate 146 rotates synchronously. Since the adjusting rack 142 and the adjusting gear 143 mesh to form a gear pair, under the action of the adjusting rack 142, the two adjusting gears 143 on the same fixed support 125 move towards each other, so that the adjusting slide 141 moves synchronously. The spring between the adjusting slide 141 and the fixed support 125 is compressed, so that the opposing strip rotating plates 127 on the same fixed support 125 move towards each other.

[0045] Adjustment pulleys 138 are rotatably mounted on the fixed support 125. A transmission assembly is provided between the adjustment pulleys 138 on the same fixed support 125 and the two drive circular plates 145. The transmission assembly includes two transmission gears 147, two transmission pulleys 148, and a transmission belt 136. The two transmission gears 147 are rotatably mounted on the same fixed support 125 and mesh to form a gear pair. One of the transmission gears 147 is fixedly connected to the drive circular plate 145 on the fixed support 125. One of the transmission pulleys 148 is fixedly mounted on the transmission gear 147 that is not connected to the drive circular plate 145, and the other transmission pulley 148 is fixedly mounted on the drive circular plate 145 that does not have a transmission gear 147. The transmission belt 136 is provided between the adjustment pulleys 138 and the two transmission pulleys 148.

[0046] The drive adjustment pulley 138 rotates, and under the action of the transmission belt 136, the two transmission pulleys 148 rotate synchronously, and the two transmission gears 147 rotate, so that the two drive circular plates 145 rotate. Under the action of the transmission gears 147, the rotation direction of the two drive circular plates 145, that is, under the action of the transmission group, makes the rotation direction of the strip rotating plates 127 on both sides of the fixed support 125 opposite.

[0047] An auxiliary pulley 139 is rotatably mounted on a fixed support 125 that is slidably mounted on the adjustment slide plate 122. The auxiliary pulley 139 is rotatably connected to the corresponding adjustment pulley 138. A transmission spline shaft 128 is also rotatably mounted on the fixed support 125 that is fixedly mounted on the adjustment slide plate 122. The transmission spline shaft 128 is rotatably connected to the corresponding adjustment pulley 138. A torsion spring is provided between the transmission spline shaft 128 and the auxiliary pulley 139. The transmission spline shaft 128 and the corresponding auxiliary pulley 139 form a spline. The adjustment slide plate 122 is slidably mounted on the fixed support 125, which is fixedly mounted on the adjustment pulley 138. Two auxiliary short rods 140 are fixedly installed on the adjustment pulley 139. Two arc-shaped grooves that cooperate with the auxiliary short rods 140 are provided on the auxiliary pulley 139. The auxiliary short rods 140 and the corresponding arc-shaped grooves on the auxiliary pulley 139 are movably connected. A fixed motor 137 is fixedly mounted on the fixed support 125, which is fixedly mounted on the adjustment slide plate 122. The output shaft of the fixed motor 137 is fixedly connected to the transmission spline shaft 128.

[0048] The fixed motor 137 is started to drive the corresponding transmission spline shaft 128 to rotate. Under the action of the torsion spring between the adjusting pulley 138 and the transmission spline shaft 128, the adjusting pulley 138 and the auxiliary pulley 139, which are fixedly mounted on the fixed support 125 on the adjusting slide plate 122, rotate. The auxiliary short rod 140 first moves in the arc-shaped groove on the auxiliary pulley 139. When the auxiliary short rod 140 moves to the end of the arc-shaped groove on the auxiliary pulley 139, the transmission spline shaft 128 continues to rotate. Under the action of the auxiliary short rod 140, the two adjusting pulleys at this time... When the wheel 138 rotates synchronously, and the fixed support 125, which is slidably mounted on the adjusting slide plate 122, moves relative to the adjusting slide plate 122, the adjusting pulley 138 on the fixed support 125, which is fixedly mounted on the adjusting slide plate 122, cannot rotate. When this pulley 138 and the transmission spline shaft 128 are compressed, the transmission spline shaft 128 continues to rotate, and the adjusting pulley 138 on the fixed support 125, which is slidably mounted on the adjusting slide plate 122, continues to rotate. The auxiliary pulley 139 slides relative to the transmission spline shaft 128.

[0049] Under the action of the auxiliary short rod 140 and the auxiliary pulley 139, when the support strip 115 and the strip rotating plate 127 fixedly installed on the fixed support 125 on the adjusting slide plate 122 achieve the fixation of the pipe fitting, the support strip 115 and the strip rotating plate 127 slidably installed on the fixed support 125 on the adjusting slide plate 122 do not completely achieve the fixation of the pipe fitting.

[0050] The fixed support 125 is also provided with a limiting unit, which is used to limit the position of the strip plate 127. Each limiting unit includes a limiting strip 133 that is slidably installed on the fixed support 125. A second limiting ratchet ring 154 is symmetrically slidably installed on the limiting strip 133. A first limiting ratchet ring 152 is fixedly installed on the second limiting ratchet ring 154. A spring is provided between the first limiting ratchet ring 152 and the corresponding adjusting slide 141. A first limiting ratchet wheel 153 is fixedly installed on the side of the linkage gear 144. The first limiting ratchet wheel 153 and the corresponding first limiting ratchet ring 152 constitute a ratchet mechanism. A second limiting ratchet wheel 135 is fixedly installed on the side of the drive circular plate 145. The second limiting ratchet wheel 135 and the corresponding second limiting ratchet ring 154 constitute a ratchet mechanism.

[0051] In the initial position, the spring between the limiting ratchet ring 152 and the adjusting slide 141 is not compressed. At this time, the limiting ratchet ring 152 and the limiting ratchet wheel 153 engage to form a ratchet mechanism, and the limiting ratchet wheel 135 and the limiting ratchet ring 154 engage to form a ratchet mechanism. When the linkage gear 144 and the drive plate 145 rotate synchronously, the limiting ratchet wheel 153 rotates relative to the adjusting rack 142, and the limiting ratchet wheel 135 rotates relative to the limiting ratchet ring 154. Under the action of the limiting ratchet ring 152 and the limiting ratchet wheel 153, the linkage gear 144 cannot rotate in the opposite direction, thereby locking the position of the strip plate 127 after rotation. Under the action of the limiting ratchet ring 154 and the limiting ratchet wheel 135, the drive plate 145 cannot rotate in the opposite direction, thereby locking the position of the strip plate 127 after rotation again, and locking the position of the adjusting slide 141 after movement.

[0052] Each fixed support 125 is rotatably mounted with a limiting screw 134. A limiting motor 132 is fixedly mounted on the fixed support 125 fixedly mounted on the adjusting slide plate 122. The limiting motor 132 is fixedly connected to the fixed support 125. The limiting screw 134 and the corresponding limiting strip 133 form a helical pair. A limiting spline shaft 130 is fixedly provided on the limiting screw 134 fixedly mounted on the fixed support 125 fixedly mounted on the adjusting slide plate 122. The limiting spline shaft 130 and the corresponding limiting screw 134 form a spline sliding fit.

[0053] In the initial position, the limiting plate 133 is located at the position furthest from the limiting motor 132. At this time, the limiting ratchet ring 152 and the limiting ratchet wheel 153 are engaged, and the limiting ratchet ring 154 and the limiting ratchet wheel 135 are engaged. When the adjusting slide 141 slides relative to the fixed support 125, the limiting ratchet ring 154 slides relative to the limiting plate 133. When the fixed support 125, which is slidably mounted on the adjusting slide plate 122, slides relative to the adjusting slide plate 122, the limiting screw 134, which is slidably mounted on the fixed support 125, slides relative to the limiting screw 134.

[0054] The start-up limit motor 132 drives the corresponding limit screw 134 to rotate. Under the action of the limit spline shaft 130, the two limit screws 134 rotate synchronously, thereby causing the two limit plates 133 to move synchronously towards the corresponding limit motor 132. The limit ratchet ring 152 and limit ratchet ring 154 corresponding to the limit plate 133 slide synchronously. The spring between the limit ratchet ring 152 and the corresponding adjusting slide 141 is compressed, causing the limit ratchet ring 152 to disengage from the limit ratchet wheel 153 and the limit ratchet ring 154 to disengage from the limit ratchet wheel 135. Thus, the limit ratchet ring 152 releases the restriction on the rotation direction of the limit ratchet wheel 153, and the limit ratchet ring 154 releases the restriction on the rotation direction of the limit ratchet wheel 135, thereby releasing the restriction on the position of the adjusting slide 141 and the strip rotating plate 127.

[0055] The base 101 is also equipped with auxiliary components for welding pipe fittings. These components include two auxiliary carriages 103 symmetrically slidably mounted on the base plate 102. Auxiliary lead screws 105 are symmetrically rotatably mounted on the base plate 102. Auxiliary motors 104 are also symmetrically fixedly mounted on the base plate 102. The output shaft of the auxiliary motor 104 is fixedly connected to the auxiliary lead screws 105. The auxiliary lead screws 105 and their corresponding auxiliary carriages 103 form a helical pair. Semi-circular toothed rings 1 are rotatably mounted on each auxiliary carriage 103. 10. When the two semi-circular toothed rings 110 are engaged, they form a complete toothed ring. An auxiliary electric cylinder 112 is fixedly installed on one of the two semi-circular toothed rings 110. An argon arc welding gun 113 is fixedly installed on the piston rod end of the auxiliary electric cylinder 112. A shifting motor 114 is fixedly installed on one of the two auxiliary slides 103. A shifting gear 111 is fixedly installed on the output shaft of the shifting motor 114. When the shifting gear 111 and the semi-circular toothed ring 110 are engaged, they form a gear pair.

[0056] In the initial position, the two auxiliary slides 103 are at their farthest point, and the end faces of the openings of the two semicircular toothed rings 110 are perpendicular to the upper surface of the base plate 102. The two auxiliary motors 104 are started to drive the corresponding auxiliary lead screws 105 to rotate, so that the two auxiliary slides 103 move towards each other, and finally the two semicircular toothed rings 110 join to form a complete toothed ring. At this time, the axes of the two semicircular toothed rings 110 are on the same straight line. Then, the auxiliary electric cylinder 112 is started to adjust the position of the argon arc welding gun 113, and then the shifting motor 114 is started to drive the shifting gear 111 to rotate, so that the semicircular toothed ring 110 rotates relative to the auxiliary slides 103, so that the argon arc welding gun 113 rotates relative to the axis of the shifting gear 111.

[0057] Working principle: First, the positioning electric cylinder 120 is activated so that the positioning plate 116 is above the upper surface of the base plate 102. Then, the two pipe fittings to be welded are placed on both sides of the positioning plate 116, and the ends of the pipe fittings are in contact with the positioning plate 116. At this time, the pipe fittings are located above the support plane formed by the support plate 106 and the support strip 115. Under the action of the support plate 106, a large support platform is formed, which facilitates the placement and removal of the pipe fittings.

[0058] Then, the fixed motor 137 is started to drive the transmission spline shaft 128 to rotate. Under the action of the transmission group, the drive circular plates 145 all rotate, and the two drive circular plates 145 on the same fixed support 125 rotate in opposite directions. Then, under the action of the linkage short rod 151 and the driven circular plate 146, the linkage gear 144 rotates synchronously. At this time, the adjusting gear 143 does not rotate. Under the action of the linkage gear 144, the strip rotating plate 127 rotates 120 degrees and contacts the corresponding limit block 149. At this time, an equilateral triangle frame is formed between the support strip plate 115 and the corresponding strip rotating plate 127. Under the action of the limit ratchet ring 152 and the limit ratchet wheel 153, the rotation direction of the linkage gear 144 is restricted. At this time, the strip rotating plate 127 is locked in position under the action of the limit block 149, the limit ratchet ring 152, and the limit ratchet wheel 153.

[0059] As the drive plate 145 continues to rotate, the torsion spring between the linkage gear 144 and the drive plate 145 is compressed. Under the action of the linkage short rod 151, the driven plate 146 rotates synchronously, that is, the adjusting gear 143 rotates synchronously. Under the action of the adjusting rack 142, the two adjusting slides 141 on the same fixed support 125 move towards each other. The spring between the adjusting slide 141 and the fixed support 125 is compressed, which in turn causes the strip rotating plates 127 on both sides of the fixed support 125 to move towards each other. Under the action of the limiting ratchet 135 and the limiting ratchet ring 154, the movement direction of the adjusting slide 141 is restricted, that is, the movement direction of the strip rotating plate 127 is restricted. Under the action of the strip rotating plate 127, the position of the pipe on the support plane formed by the base plate 102 and the support strip 115 is adjusted.

[0060] Finally, the pipe fitting is positioned at the center of the support plate 115. At this point, the strip rotating plate 127, which is fixedly mounted on the fixed support 125 on the adjusting slide plate 122, clamps and fixes the end of the pipe fitting. Under the action of the auxiliary pulley 139 and the auxiliary short rod 140, the strip rotating plate 127, which is slidably mounted on the fixed support 125 on the adjusting slide plate 122, does not completely fix the pipe fitting. Then, the dual-head motor 117 and the displacement electric cylinder 126 are started, causing the two support plates 106 to move to the farthest position. The positioning electric cylinder 120 is then started, causing the positioning plate 116 to move downward, thus retracting the support plate 106 and the positioning plate 116. At this point, the movement of the support plate 115 to both sides is not affected by the support plate 106.

[0061] Then, the shift motor 131 is started to drive the corresponding shift screw 129 to rotate, so that the two fixed supports 125 slidably mounted on the adjustment slide plate 122 move away from each other. According to the length of the pipe on the support strip 115 on the fixed support 125, the fixed support 125 is moved to the designated position. Then, the fixed motor 137 is started to drive the transmission spline shaft 128 to rotate. The torsion spring between the transmission spline shaft 128 and the adjustment pulley 138 corresponding to the fixed support 125 fixedly mounted on the adjustment slide plate 122 is compressed. The adjustment pulley 138 corresponding to the fixed support 125 slidably mounted on the adjustment slide plate 122 continues to rotate, so that the strip plate 127 corresponding to the fixed support 125 slidably mounted on the adjustment slide plate 122 fixes the pipe.

[0062] Start the adjustment motor 124 to drive the adjustment screw 123 to rotate, adjust the position between the two adjustment slides 122, adjust the position of the pipes fixed on the two adjustment slides 122, so that the welding position of the end face of the two pipes is located at the center of the base plate 102.

[0063] The feed screw 108 is restarted, causing the feed slide 121 to move upward. The fixed pipe fitting moves downward synchronously, eventually making the axis of the pipe fitting parallel to the axis of the semi-circular toothed ring 110. Then, the auxiliary motor 104 is started, causing the two semi-circular toothed rings 110 to engage and form a complete toothed ring. The auxiliary electric cylinder 112 is then started, causing the argon arc welding torch 113 to move closer to the welding position of the two pipe fittings. After the argon arc welding torch 113 moves to the designated position, it is started. Then, the adjustment motor 124 is started, causing the two adjustment slides 122 to move synchronously, thus making the welding position of the pipe fitting move synchronously, thereby realizing argon arc welding at the welding position of the two pipe fittings. The shift motor 114 drives the shift gear 111, causing the two semi-circular toothed rings 110 to rotate, which in turn causes the argon arc welding torch 113 to rotate relative to the axis of the pipe fitting, thereby realizing annular argon arc welding at the welding point of the pipe fitting.

[0064] After welding the pipe fittings, start the limit motor 132 to drive the limit spline shaft 130 to rotate, causing the limit strip 133 to slide. This causes the first limit ratchet ring 152 to disengage from the first limit ratchet wheel 153, the second limit ratchet ring 154 to disengage from the second limit ratchet wheel 135, and the second limit ratchet ring 154 to disengage from the second limit ratchet wheel 135. This removes the restriction on the rotation direction of the linkage gear 144 and the drive circular plate 145, and in turn removes the restriction on the position of the adjusting slide 141 and the strip rotating plate 127. Then, the above operation is reversed to return the strip rotating plate 127 to its initial position.

[0065] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the protection scope of this invention.

Claims

1. A steel pipe welding device, comprising a base (101), on which a base plate (102) is fixedly mounted, characterized in that: The base (101) is symmetrically provided with fixing components, each of which includes an adjusting slide plate (122). Each adjusting slide plate (122) is provided with two fixed supports (125). Each fixed support plate (125) is fixedly provided with a support strip plate (115). An adjusting slide plate (141) is also symmetrically slidably installed on the fixed support plate (125). A strip rotating plate (127) is symmetrically rotatably installed on the adjusting slide plate (141). The support strip plate (115) and the strip rotating plate (127) are used to fix the pipe fitting. An adjusting unit and a limiting unit are also provided on the fixed support plate (125). The adjusting unit is used to adjust the position of the strip rotating plate (127), and the limiting unit is used to limit the position of the strip rotating plate (127). The base (101) is also provided with a support component and an auxiliary component. The support component includes a support slide (107). A support plate (106) is symmetrically slidably installed on the support slide (107). The support plate (106) is used to assist in supporting the pipe fittings. The auxiliary component is used to realize the welding of the pipe fittings. The adjustment unit includes two drive circular plates (145) symmetrically rotatably mounted on a fixed support (125). Each drive circular plate (145) is rotatably mounted with a linkage gear (144). One of the two strip-shaped rotating plates (127) on the same adjustment slide (141) is fixedly provided with a sector rack (150). The linkage gear (144) meshes with the corresponding sector rack (150) to form a gear pair. A torsion spring is provided between the linkage gear (144) and the drive circular plate (145). A driven circular plate (146) is rotatably mounted on the adjusting slide (141). A torsion spring is provided between the driven circular plate (146) and the adjusting slide (141). Two linkage short rods (151) are fixedly mounted on the driving circular plate (145). Two arc-shaped sliding grooves that cooperate with the linkage short rods (151) are provided on the driven circular plate (146). An adjusting gear (143) is also fixedly mounted on the driven circular plate (146). An adjusting rack (142) is symmetrically fixedly mounted on the base (101). The adjusting rack (142) meshes with the corresponding adjusting gear (143) to form a gear rack pair. Each of the fixed supports (125) is rotatably mounted with an adjusting pulley (138). A transmission assembly is provided between the adjusting pulley (138) on the same fixed support (125) and the two drive circular plates (145). An auxiliary pulley (139) is also rotatably mounted on the fixed support (125) that is slidably mounted on the adjusting slide plate (122). The auxiliary pulley (139) and the corresponding adjusting pulley (138) are rotatably connected. A transmission spline shaft is also rotatably mounted on the fixed support (125) that is fixedly mounted on the adjusting slide plate (122). 128), the transmission spline shaft (128) and the corresponding adjustment pulley (138) are rotatably connected. A torsion spring is provided between the transmission spline shaft (128) and the auxiliary pulley (139). The transmission spline shaft (128) and the corresponding auxiliary pulley (139) form a spline sliding fit. Two auxiliary short rods (140) are fixedly provided on the adjustment pulley (138) on the fixed support (125) slidably mounted on the adjustment slide plate (122). Two arc-shaped grooves that cooperate with the auxiliary short rods (140) are provided on the auxiliary pulley (139).

2. The steel pipe welding device according to claim 1, characterized in that: A feed slide plate (121) is slidably mounted on the base plate (102). Two adjustment slide plates (122) are symmetrically slidably mounted on the feed slide plate (121). One of the two fixed supports (125) on the same adjustment slide plate (122) is fixedly mounted on the adjustment slide plate (122), and the other fixed support (125) is slidably mounted on the adjustment slide plate (122). The two fixed supports (125) fixedly mounted on the adjustment slide plate (122) are located at the farthest positions.

3. The steel pipe welding device according to claim 2, characterized in that: Springs are provided between the adjusting slide (141) and the fixed support (125). Two strip-shaped rotating plates (127) on the same adjusting slide (141) are fixedly connected. A torsion spring is provided between the strip-shaped rotating plate (127) and the adjusting slide (141). The elastic force of the torsion spring between the adjusting slide (141) and the strip-shaped rotating plate (127) is always less than the elastic force of the spring between the adjusting slide (141) and the fixed support (125). Limiting blocks (149) are also symmetrically fixed on the adjusting slide (141). The limiting blocks (149) are used to limit the rotation position of the strip-shaped rotating plate (127).

4. The steel pipe welding device according to claim 3, characterized in that: Each limiting unit includes a limiting strip (133) slidably mounted on a fixed support (125). A second limiting ratchet ring (154) is symmetrically slidably mounted on the limiting strip (133). A first limiting ratchet ring (152) is fixedly mounted on the second limiting ratchet ring (154). A first limiting ratchet wheel (153) is fixedly mounted on the side of the linkage gear (144). When the first limiting ratchet wheel (153) and the corresponding first limiting ratchet ring (152) are engaged, they form a ratchet mechanism. A second limiting ratchet wheel (134) is fixedly mounted on the side of the driving circular plate (145). 5) When the second limiting ratchet (135) and the corresponding second limiting ratchet ring (154) are engaged, they form a ratchet mechanism. The fixed support (125) is rotatably mounted with a limiting screw (134). The limiting screw (134) and the corresponding limiting strip (133) form a helical pair. The limiting screw (134) on the fixed support (125) fixedly mounted on the adjusting slide plate (122) is fixedly provided with a limiting spline shaft (130). The limiting spline shaft (130) and the corresponding limiting screw (134) form a spline sliding fit.

5. A steel pipe welding device according to claim 4, characterized in that: The support slide (107) is slidably mounted on the base (101). The support plate (106) is provided with a square notch to accommodate the movement of the support strip (115). The base (101) is also fixedly mounted with a positioning electric cylinder (120). The piston rod end of the positioning electric cylinder (120) is fixedly mounted with a positioning plate (116). The positioning plate (116) is used to assist in positioning the pipe fitting.

6. The steel pipe welding device according to claim 5, characterized in that: The auxiliary components include two auxiliary slides (103) symmetrically slidably mounted on the base plate (102). Each auxiliary slide (103) is rotatably mounted with a semi-circular toothed ring (110). When the two semi-circular toothed rings (110) are engaged, they form a complete toothed ring. An auxiliary electric cylinder (112) is fixedly mounted on one of the two semi-circular toothed rings (110). An argon arc welding gun (113) is fixedly mounted on the piston rod end of the auxiliary electric cylinder (112).

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