Segmented hoisting, folding, welding and positioning device for net rack construction

Abstract

The invention discloses a segmental hoisting, folding and welding positioning device for net rack construction, and belongs to the technical field of welding, the segmental hoisting, folding and welding positioning device comprises a welding pipe, a liner pipe and a fixing block, a threaded groove is formed in the side wall of the liner pipe, an adjusting groove is formed in the side wall of the welding pipe, a threaded column is sleeved with the fixing block, a motor is arranged in the fixing block, and the output end of the motor is connected with a first gear; the side wall of the fixing block is rotationally connected with a rotating block. By means of threaded connection and matching of the threaded column and the threaded groove, the fixing block, the welded pipe and the liner pipe keep a good fixing effect, materials which are hoisted and folded in a segmented mode can be fixed in advance, the fixing effect is stable and reliable, operation is convenient, flexible and adjustable, later welding is facilitated, stress generated during welding is reduced, and the welding efficiency is improved. The stability during the weld joint recovery period is guaranteed, weld joint cracking is avoided, through the long-strip-shaped design of the adjusting grooves, the liner pipe and the welded pipe can be adjusted and fixed at will within the range, and the adjusting flexibility is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a segmented hoisting, closing, welding and positioning device for grid construction. Background Art

[0002] The roof structure design of large venues and theaters mostly adopts large-span trusses and grids, while large-area grid structures mostly adopt welded balls. Since the construction and positioning of high-altitude welded ball grids are difficult and the welding workload is large, the method of assembling small units on the ground and then lifting them in pieces and sections and temporarily supporting them is generally adopted to reduce the amount of high-altitude work and improve installation accuracy. After the pieces and sections are lifted, several closing seams will be formed.

[0003] In the prior art, for the construction of the closure seams of the grid, the conventional method is to wait until the installation of other structural members of the roof is completed, and then finally hoist the structural members at the closure seams for construction. The disadvantage of this method is that temporary spot welding is used for the welding and temporary fixation of the frame. When the structural boundary constraints on both sides of the closure seam are strong and the construction period is long, the stress at the closure seam will be large, resulting in cracks in the spot welding seams and causing safety accidents.

[0004] How to invent a segmented hoisting, closing, welding and positioning device for grid construction to improve these problems has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a segmented hoisting, closing, welding and positioning device for grid construction, aiming to improve the problems raised by the above background technology.

[0006] The present invention is achieved in that:

[0007] The present invention provides a segmented hoisting, closing and welding positioning device for grid construction, comprising a welding pipe, a liner pipe and a fixed block, wherein a threaded groove is provided on the side wall of the liner pipe, an adjusting groove is provided on the side wall of the welding pipe, a threaded column is sleeved inside the fixed block, a motor is arranged inside the fixed block, a gear one is connected to the output end of the motor, a rotating block is rotatably connected to the side wall of the fixed block, an inner gear ring matching the gear one is arranged inside the rotating block, a roller is arranged on the side of the rotating block close to the welding pipe, a welding gun, a liquid spray head, an air jet head and a cleaning head are arranged in sequence on the side wall of the rotating block in a clockwise direction, a liquid tank is provided inside the rotating block, and a driving mechanism and an air storage mechanism are also arranged inside the rotating block;

[0008] The driving mechanism includes a sealed chamber provided inside the rotating block, a threaded shaft is rotatably connected inside the rotating block, a reciprocating thread is provided on the outer wall of the threaded shaft, a transmission block is sleeved on the outer wall of the threaded shaft, a piston 1 is sleeved inside the sealed chamber, the piston 1 is connected to the transmission block through a connecting rod, a planetary gear set is provided inside the rotating block, an input end of the planetary gear set is connected to an output end of the motor, and an output end of the planetary gear set is connected to the threaded shaft, an air pipe connected to the sealed chamber is provided inside the rotating block, one end of the air pipe is connected to the inside of the sealed chamber, the other end of the air pipe is connected to a cleaning head, the cleaning head is connected to an injection head, and a cleaning assembly is provided inside the cleaning head;

[0009] The gas storage mechanism includes gear 2 which is transmission-connected to the output shaft of the motor, gear 3 which is rotationally connected inside the rotating block, a convex block which is sleeved on the output shaft of gear 3, an air groove which is provided inside the rotating block, piston 2 which is sleeved inside the air groove, a spring which is provided between piston 2 and the air groove, piston 2 which cooperates with the convex block, and a connecting component which is also provided inside the rotating block.

[0010] Preferably, the number of teeth on gear two is greater than the number of teeth on gear three.

[0011] Preferably, the connecting component includes a slider movably sleeved inside the rotating block, the slider is provided with a through hole, the sliding connection of the slider is provided with a cover plate matching the through hole, a long strip protrusion is provided on the top of the cover plate, and the protrusion is made of flexible rubber material.

[0012] Preferably, the side of the slider close to the cleaning head is made of magnetic material, a magnetic block is arranged inside the rotating block, and a spring is arranged at one end of the slider away from the magnetic block.

[0013] Preferably, the cleaning assembly includes a spherical cavity opened inside the cleaning head, a rotating shaft perpendicular to the trachea is arranged inside the spherical cavity, blades matching the spherical cavity are arranged on the outer wall of the rotating shaft, a piston three is sleeved inside the cleaning head, a cleaning shaft is arranged at the bottom of the piston three, and a spring is arranged between the piston three and the cleaning head.

[0014] Preferably, the bottom of the rotating shaft is designed to be prismatic, and the bottom of the rotating shaft is movably sleeved with the piston.

[0015] Preferably, a sealing sheet is provided between the bottom of the blade and the piston three, one end of the sealing sheet is fixedly connected to the top of the piston three, and the other end of the sealing sheet is movably sleeved with the blade.

[0016] Preferably, the fixed block and the rotating block are designed to be semicircular and symmetrically distributed along the welded pipe, and there are multiple groups of thread grooves, adjustment grooves and thread columns distributed along the axis of the fixed block.

[0017] In summary, the beneficial effects of the present invention are:

[0018] 1. Through the threaded connection between the threaded column and the threaded groove, the fixing block, the welded pipe and the liner pipe can maintain a good fixing effect, and the materials that are hoisted and closed in sections can be pre-fixed. Not only is the fixing effect stable and reliable, but the operation is also convenient and flexible, which is convenient for later welding, reduces the stress generated during welding, ensures the stability of the weld during recovery, and avoids weld cracking. Through the long strip design of the adjustment groove, the liner pipe and the welded pipe can be adjusted and fixed arbitrarily within the range, which improves the flexibility of adjustment.

[0019] 2. Automatic circumferential welding can be achieved through the rotation of the rotating block and the cooperation of the welding gun. In addition, during the welding process, through the reciprocating thread design of the threaded shaft, when rotating the first circle, the piston can move to pump out the internal pressure gas. The gas can push the cleaning shaft to extend and rotate through the welding gun, and the area to be welded of the welded pipe can be rotated and cleaned, which effectively pre-cleans the dust, impurities, rust, iron filings, oil stains and other pollution in the welding area. The gas is further ejected through the nozzle to compress and blow the area after the cleaning shaft is cleaned, and the dust, debris and other impurities remaining on the surface of the welding area are further thoroughly removed, which effectively reduces the influence of impurities and dust adhesion on welding work and welding quality in an open high-altitude environment, realizes automatic welding, reduces the workload of personnel, and improves welding efficiency and quality.

[0020] 3. Through the reciprocating thread design of the threaded shaft, the paint stored in the liquid tank can be sprayed out through the one-way valve between the sealing chamber and the spray head when rotating the second circle, so as to realize automatic spray protection of the first circle welding area. It can not only provide protection for the weld to avoid the invasion of impurities and dust flowing in the air, but also slow down the speed of heat dissipation from the weld to the surrounding environment, so that the weld can be cooled slowly in a relatively long time. This can reduce the peak value of thermal stress, avoid defects such as cracks in the weld due to excessive thermal stress, and significantly improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is an overall schematic diagram of a welded pipe provided in an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of splitting a fixed block provided in an embodiment of the present invention.

[0024] Figure 3It is a schematic diagram of the interior of the adjustment tank provided in an embodiment of the present invention.

[0025] Figure 4 It is a schematic diagram of the interior of a rotating block provided in an embodiment of the present invention.

[0026] Figure 5 It is a cross-sectional schematic diagram of a rotating block provided in an embodiment of the present invention.

[0027] Figure 6 It is a schematic diagram of a gear transmission provided in an embodiment of the present invention.

[0028] Figure 7 It is a schematic diagram of the interior of the sealed cavity provided in an embodiment of the present invention.

[0029] Figure 8 It is an overall schematic diagram of a cover plate provided in an embodiment of the present invention.

[0030] Fig. 9 It is a schematic diagram of the interior of a cleaning head provided in an embodiment of the present invention.

[0031] Fig.10 Schematic diagram of the sealing sheet according to the embodiment of the present invention.

[0032] Fig.11 Schematic diagram of a planetary gear set provided in an embodiment of the present invention.

[0033] Legend:

[0034] 100, welding pipe; 101, liner; 102, adjusting groove; 103, threaded groove; 200, fixed block; 201, rotating block; 202, threaded column; 203, roller; 204, motor; 205, gear 1; 206, gear 2; 207, gear 3; 208, convex block; 209, air groove; 210, liquid groove; 211, threaded shaft; 212, transmission block; 213, piston 1; 214, sealing chamber; 215, slider; 216, magnet; 217, through hole; 218, air pipe; 219, cover plate; 220, piston 2; 300, welding gun; 301, spray head; 302, spray head; 303, cleaning head; 304, spherical chamber; 305, rotating shaft; 306, blade; 307, piston 3; 308, cleaning shaft; 309, sealing plate; 400, planetary gear set. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Reference Figure 1-11 A segmented hoisting and closing welding positioning device for grid construction includes a welding pipe 100, a liner 101 and a fixed block 200. The side wall of the liner 101 is provided with a threaded groove 103, the side wall of the welding pipe 100 is provided with an adjustment groove 102, a threaded column 202 is sleeved inside the fixed block 200, a motor 204 is arranged inside the fixed block 200, the output end of the motor 204 is connected to a gear 1 205, and the side wall of the fixed block 200 is rotatably connected to the rotating block 201 The rotating block 201 has an inner gear ring matching the gear 1 205, a roller 203 is arranged on the side of the rotating block 201 close to the welding pipe 100, a welding gun 300, a liquid spray head 301, an air jet head 302 and a cleaning head 303 are arranged in a clockwise direction on the side wall of the rotating block 201, a liquid tank 210 is arranged inside the rotating block 201, and a coating solution is contained in the liquid tank 210, and a driving mechanism and an air storage mechanism are also arranged inside the rotating block 201;

[0037] The driving mechanism includes a sealed chamber 214 opened inside the rotating block 201, a threaded shaft 211 is rotatably connected inside the rotating block 201, a reciprocating thread is arranged on the outer wall of the threaded shaft 211, a transmission block 212 is sleeved on the outer wall of the threaded shaft 211, a piston 213 is sleeved inside the sealed chamber 214, the piston 213 is connected to the transmission block 212 through a connecting rod, a planetary gear set 400 is arranged inside the rotating block 201, the input end of the planetary gear set 400 is connected to the output end of the motor 204, the output end of the planetary gear set 400 is connected to the threaded shaft 211, an air pipe 218 connected to the sealed chamber 214 is opened inside the rotating block 201, one end of the air pipe 218 is connected to the inside of the sealed chamber 214, the other end of the air pipe 218 is connected to the cleaning head 303, the cleaning head 303 is connected to the nozzle 302, and a cleaning component is arranged inside the cleaning head 303;

[0038] A one-way valve communicating with the inside of the liquid tank 210 for liquid suction is provided on the side wall of the sealed cavity 214 away from the cleaning head 303 , and a liquid supply one-way valve communicating with the liquid spraying head 301 is also provided inside the sealed cavity 214 .

[0039] The gas storage mechanism includes a gear 206 connected to the output shaft of the motor 204, the output end of the motor 204 is connected to the sun gear of the planetary gear set 400, and the threaded shaft 211 is connected to the output end gear ring of the planetary gear set 400, so as to realize the reduction transmission of the threaded shaft 211, the internal rotation of the rotating block 201 is connected to the gear 3 207, the output shaft of the gear 3 207 is sleeved with a convex block 208, the interior of the rotating block 201 is provided with an air groove 209, the interior of the air groove 209 is sleeved with a piston 220, and the piston 220 is sleeved with the piston 220. A spring is arranged between the air groove 209, and the piston 220 cooperates with the protrusion 208 to form a group of piston pumping devices. When the protrusion 208 rotates, it can periodically push the piston 220 to compress the gas inside the air groove 209, and discharge the gas inside the air groove 209 into the sealed cavity 214 to form pumping gas. The air groove 209 is provided with a pipeline with a one-way valve and the flow direction is toward the inside of the sealed cavity 214 for exhaust. The air groove 209 is also provided with an airway with a one-way valve for sucking air from the outside, and a connecting component is also provided inside the rotating block 201.

[0040] It should be noted that the cross-sectional profiles of the transmission block 212 , the piston 1 213 , and the sealing chamber 214 are designed to be elliptical, which can prevent the transmission block 212 from rotating synchronously with the threaded shaft 211 .

[0041] It should be noted that the number of teeth of gear 2 206 is greater than the number of teeth of gear 3 207 , which can increase the rotation speed and improve the pumping effect.

[0042] Reference Figure 7-8 The connecting component includes a slider 215 movably sleeved inside the rotating block 201, the slider 215 is provided with a through hole 217, the slider 215 is slidably connected with a cover plate 219 matched with the through hole 217, and a long strip protrusion is provided on the top of the cover plate 219, and the protrusion is made of flexible rubber material.

[0043] Furthermore, a side of the slider 215 close to the cleaning head 303 is made of magnetic material, a magnetic block 216 is arranged inside the rotating block 201 , and a spring is arranged at one end of the slider 215 away from the magnetic block 216 .

[0044] Reference Fig. 9 The cleaning component includes a spherical cavity 304 opened inside the cleaning head 303, a rotating shaft 305 perpendicular to the air pipe 218 is arranged inside the spherical cavity 304, and a blade 306 adapted to the spherical cavity 304 is arranged on the outer wall of the rotating shaft 305. A piston three 307 is sleeved inside the cleaning head 303, a cleaning shaft 308 is arranged at the bottom of the piston three 307, and a spring is arranged between the piston three 307 and the cleaning head 303.

[0045] Reference Fig.10 The bottom of the rotating shaft 305 is designed to be prismatic, and the bottom of the rotating shaft 305 is movably connected to the piston three 307.

[0046] It should be noted that a sealing sheet 309 is provided between the bottom of the blade 306 and the piston three 307 , one end of the sealing sheet 309 is fixedly connected to the top of the piston three 307 , and the other end of the sealing sheet 309 is movably sleeved with the blade 306 .

[0047] It should be noted that the fixed block 200 and the rotating block 201 are semicircular in design and symmetrically distributed along the welding pipe 100 , and there are multiple groups of thread grooves 103 , adjustment grooves 102 and threaded columns 202 distributed along the axis of the fixed block 200 .

[0048] The working process of the segmented hoisting, closing and welding positioning device for grid construction is as follows:

[0049] First, the assembled grid is hoisted, closed and aligned, and the grids on both sides are welded first. The liner 101 is inserted along the inner wall of the welded pipe 100, and the positions of the welded pipe 100 and the liner 101 are adjusted within the pre-planned range so that they are conveniently welded in a good position. After the position is adjusted, the fixing block 200 is further buckled on the outside of the welded pipe 100, so that the fixing block 200 slides on the outside of the welded pipe 100 until the threaded column 202 is aligned with the threaded groove 103, and the threaded connection between the threaded column 202 and the threaded groove 103 is matched to make the fixing block 200 , the welding pipe 100 and the liner pipe 101 are fixed to each other, so that the materials that are hoisted and closed in sections can be pre-fixed. Not only is the fixing effect stable and reliable, but the operation is convenient, flexible and adjustable, which is convenient for later welding, reduces the stress generated during welding, ensures the stability of the weld during recovery, and avoids weld cracking. Through the long strip design of the adjustment groove 102, the liner pipe 101 and the welding pipe 100 can be adjusted and fixed in an arbitrary range, thereby improving the flexibility of adjustment. Then, the fixing block 200 is fixedly connected to its corresponding other half by bolts, and the rotating block 201 is also fixedly connected to its corresponding other half by bolts.

[0050] At this time, the welding gun 300, the liquid spray head 301, the air jet head 302 and the cleaning head 303 are all aligned with the welding part of the welding pipe 100 and the welding ball. Further, the motor 204 and the welding gun 300 are started. The motor 204 starts to drive the gear 1 205 and the gear 2 206 to rotate. The gear 1 205 drives the rotating block 201 to rotate by cooperating with the internal gear ring of the rotating block 201. At the same time, the gear 3 207 can be driven to rotate faster through the difference in the number of teeth between the gear 2 206 and the gear 3 207, and then the convex block 208 is driven to rotate faster, and the piston 2 220 is periodically pushed. By periodically compressing the air in the gas groove 209, the inside of the sealing chamber 214 and the left side of the piston 1 213 are compressed. The motor 204 continuously pumps air. Meanwhile, the output end of the motor 204 drives the threaded shaft 211 to rotate at a reduced speed through the reduction transmission of the planetary gear set 400. When the threaded shaft 211 rotates, the thread on the surface of the threaded shaft 211 drives the transmission block 212 to move toward the cleaning head 303. Meanwhile, the piston 213 is synchronously pushed toward the cleaning head 303 through the connecting rod to further compress the compressed gas entering the sealed chamber 214. The compressed gas is pumped into the air pipe 218 through the through hole 217. The gas enters the cleaning head 303 through the air pipe 218. In the process of further passing through the spherical cavity 304 and entering the injection head 302, the gas first applies pressure to the inside of the spherical cavity 304 to push the blades. 306 rotates, and then the pressure gas is transmitted to the nozzle 302 through the rotation of the blade 306. When the internal pressure of the spherical cavity 304 increases, the piston 307 is pushed downward, thereby driving the cleaning shaft 308 to extend. The rotation of the rotating shaft 305 drives the rotation of the piston 307. The cleaning shaft 308 can be extended and rotated, and the soft hair on the surface of the cleaning shaft 308 can be used to clean the welding area of ​​the welding pipe 100 to be welded, so as to effectively and efficiently clean the dust, impurities, rust, iron filings, oil and other pollution in the welding area in advance. Then, the gas enters the nozzle 302 and is blown out. With the rotation of the rotating block 201, the cleaning shaft 308 can be cleaned. The area is cleaned by compressed air blowing to thoroughly remove impurities such as dust and debris remaining on the surface of the welding area. At the same time, with the rotation of the rotating block 201 and the start-up of the welding gun 300, welding can be performed on the area that has been preliminarily cleaned by the cleaning shaft 308 and further cleaned by the air blowing of the nozzle 302. Through the continuous rotation of the rotating block 201, the cleaning shaft 308 and the nozzle 302 continue to rotate to clean the welding area in a circular manner, and the welding gun 300 can automatically perform circular welding on the cleaned area, which effectively reduces the influence of impurities and dust adhesion on welding work and welding quality in an open high-altitude environment, realizes automatic welding, reduces the workload of personnel, and improves welding efficiency and quality.

[0051] When the rotating block 201 rotates the first circle to complete the automatic cleaning and welding of the welding pipe 100, when the rotating block 201 rotates the second circle, the welding gun 300 stops welding. At this time, through the reciprocating thread design on the surface of the threaded shaft 211, the threaded shaft 211 drives the transmission block 212 to move in the opposite direction, and drives the piston 1 213 to move toward the direction of the gear 2 206. When the piston 1 213 moves toward the cleaning head 303, negative pressure occurs on the right side of the piston 1 213 and inside the sealed chamber 214, so that the paint stored in the liquid tank 210 can be sucked in through the one-way valve between the liquid tank 210 and the sealed chamber 214. When the piston 1 213 moves toward the gear 2 206, the paint is sprayed out through the spray head 301 through the one-way valve between the sealed chamber 214 and the spray head 301. When the second circle is rotated, the first circle welding area can be sprayed for protection. It should be noted that the paint Ceramic-based high-temperature coatings can be used. They are adjusted into liquid coatings through additives such as solvents or dispersants. After coming into contact with the molten pool weld after welding, the solvents and binders in the coatings evaporate, and the ceramic powder forms a high-temperature resistant ceramic layer, which can not only provide protection for the weld and prevent the invasion of impurities and dust flowing in the high altitude, but also this ceramic layer has low thermal conductivity, which can effectively prevent the rapid loss of heat and play a role in slow cooling. It should be noted that when spherical grid welding is carried out at high altitude, the ambient temperature is low and the heat dissipation is fast. The fast cooling speed of the weld will produce greater thermal stress. Ceramic-based high-temperature coatings have certain thermal insulation properties. After being coated on the weld, it can slow down the speed of heat dissipation from the weld to the surrounding environment, allowing the weld to cool slowly over a relatively long period of time. This can reduce the peak value of thermal stress, avoid defects such as cracks in the weld due to excessive thermal stress, and significantly improve the welding quality.

[0052] It should be noted that, since the gear 2 206 continues to rotate regardless of whether the piston 1 213 moves left or right, the bump 208 can still provide a pumping effect during the rightward resetting process of the piston 1 213 .

[0053] When the rotating block 201 rotates nearly one circle, the piston 1 213 approaches the left side of the sealing chamber 214 under the push of the transmission block 212. At this time, the slider 215 is pushed by the piston 1 213, so that the slider 215 moves and is adsorbed under the attraction of the magnetic block 216, so that the bottom opening of the sealing chamber 214 is misaligned with the through hole 217 at this time, so that when the rotation is nearly one circle, the internal gas of the sealing chamber 214 will not continue to be discharged through the air pipe 218, preventing the extension of the cleaning shaft 308 and the blowing of the air nozzle 302 from affecting the quality of the welding molten pool. When the rotating block 201 rotates a second circle for coating spraying, the piston 1 213 moves away from the cleaning head 303 until it contacts the slider 215, pushes the slider 215 away from the contact with the magnetic block 216, and pushes the slider 215 so that the spring on the right side of the slider 215 is compressed. In this process, the slider 215 When moving to the right, under the resistance of the strip-shaped protrusion on the top of the cover plate 219, the cover plate 219 and the slider 215 slide relative to each other, blocking the through hole 217, until the slider 215 continues to move until the through hole 217 passes through the bottom connecting port of the sealed chamber 214, and the spring on the left side of the slider 215 is compressed. This design is that during the reverse resetting process of the slider 215, the through hole 217 is blocked by the cover plate 219 to prevent gas from leaking through the sealed chamber 214 and the through hole 217. When the next operating cycle starts, the piston 213 moves to the left, and the slider 215 is reset under the action of the spring force on the right side. At this time, due to the large friction between the protrusion on the top of the cover plate 219 and the rotating block 201, the cover plate 219 remains stationary when the slider 215 passes by, until the through hole 217 moves to the left to coincide with the bottom opening of the sealed chamber 214, and the pressurized gas can continue to be transported to the outside through the air pipe 218.

[0054] Therefore, when piston 1 213 moves to the right, the through hole 217 is not only in a closed state, but also can continuously pump air to charge and store air inside the sealed cavity 214 through the protrusion 208, so that the subsequent pumping and blowing through the sealed cavity 214 can ensure the gas pressure and blowing force, thereby ensuring the cleaning effect.

[0055] It should be noted that there is a gap between piston three 307 and the cleaning head 303. When compressed gas enters, it can push piston three 307 downward and blade 306 to rotate. When the gas supply is stopped, excess pressure is discharged through the gap between piston three 307 and the cleaning head 303, so that piston three 307 is reset, avoiding the cleaning shaft 308 from contacting the molten pool after welding.

[0056] It should be noted that the specific model and specifications of the welding gun 300 need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A segmented hoisting, closing and welding positioning device for grid construction, comprising a welding pipe (100), a liner pipe (101) and a fixing block (200), characterized in that: The side wall of the liner (101) is provided with a threaded groove (103), the side wall of the welding pipe (100) is provided with an adjustment groove (102), a threaded column (202) is sleeved inside the fixed block (200), a motor (204) is arranged inside the fixed block (200), the output end of the motor (204) is connected to a gear 1 (205), the side wall of the fixed block (200) is rotatably connected to a rotating block (201), the rotating block (201) is provided with a roller (203), a welding gun (300), a liquid spray head (301), an air jet head (302) and a cleaning head (303) are arranged on the side wall of the rotating block (201) in a clockwise direction, a liquid tank (210) is arranged inside the rotating block (201), and a driving mechanism and an air storage mechanism are also arranged inside the rotating block (201); The driving mechanism comprises a sealed chamber (214) provided inside a rotating block (201); a threaded shaft (211) is rotatably connected inside the rotating block (201); an outer wall of the threaded shaft (211) is provided with a reciprocating thread; a transmission block (212) is sleeved on the outer wall of the threaded shaft (211); a piston 1 (213) is sleeved inside the sealed chamber (214); the piston 1 (213) is connected to the transmission block (212) via a connecting rod; a planetary gear set (400) is provided inside the rotating block (201); an air pipe (218) is provided inside the rotating block (201); the cleaning head (303) is in communication with the spray head (302); and a cleaning component is provided inside the cleaning head (303); The gas storage mechanism comprises a second gear (206) which is transmission-connected to the output shaft of the motor (204); a third gear (207) is rotationally connected inside the rotating block (201); the output shaft of the third gear (207) is sleeved with a convex block (208); an air groove (209) is provided inside the rotating block (201); a second piston (220) is sleeved inside the air groove (209); a spring is provided between the second piston (220) and the air groove (209); and a connecting component is also provided inside the rotating block (201).

2. A segmented hoisting, closing, welding and positioning device for grid construction according to claim 1, characterized in that: The number of teeth of gear 2 (206) is greater than the number of teeth of gear 3 (207).

3. The segmented hoisting, closing, welding and positioning device for grid construction according to claim 1 is characterized in that: The connecting component comprises a slider (215) movably sleeved inside the rotating block (201), the slider (215) being provided with a through hole (217), the slider (215) being slidably connected to a cover plate (219) matching the through hole (217), the top of the cover plate (219) being provided with a long strip-shaped protrusion, and the protrusion being made of a flexible rubber material.

4. The segmented hoisting, closing, welding and positioning device for grid construction according to claim 3 is characterized in that: The side of the slider (215) close to the cleaning head (303) is made of magnetic material, a magnetic block (216) is arranged inside the rotating block (201), and a spring is arranged at one end of the slider (215) away from the magnetic block (216).

5. The segmented hoisting, closing, welding and positioning device for grid construction according to claim 1 is characterized in that: The cleaning assembly comprises a spherical cavity (304) opened inside a cleaning head (303); a rotating shaft (305) perpendicular to the air pipe (218) is arranged inside the spherical cavity (304); a blade (306) adapted to the spherical cavity (304) is arranged on the outer wall of the rotating shaft (305); a piston three (307) is sleeved inside the cleaning head (303); a cleaning shaft (308) is arranged at the bottom of the piston three (307); and a spring is arranged between the piston three (307) and the cleaning head (303).

6. The segmented hoisting, closing, welding and positioning device for grid construction according to claim 5 is characterized in that: The bottom of the rotating shaft (305) is of prismatic design, and the bottom of the rotating shaft (305) is movably sleeved with piston three (307).

7. The segmented hoisting, closing, welding and positioning device for grid construction according to claim 5 is characterized in that: A sealing sheet (309) is provided between the bottom of the blade (306) and the piston three (307), one end of the sealing sheet (309) is fixedly connected to the top of the piston three (307), and the other end of the sealing sheet (309) is movably sleeved with the blade (306).

8. The segmented hoisting, closing, welding and positioning device for grid construction according to claim 1 is characterized in that: The fixed block (200) and the rotating block (201) are semicircular in design and symmetrically distributed along the welded pipe (100), and the thread grooves (103), the adjustment grooves (102) and the threaded columns (202) are distributed in multiple groups along the axis of the fixed block (200).

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