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CN-121988958-A - Automatic welding platform for vertical storage tank

CN121988958ACN 121988958 ACN121988958 ACN 121988958ACN-121988958-A

Abstract

The invention provides an automatic welding platform for a vertical storage tank, which belongs to the technical field of welding equipment and comprises a vehicle body, an adsorption platform, longitudinal moving mechanisms and welding devices, wherein 4 groups of adsorption devices are arranged at four corners of a welding side of the vehicle body, each group comprises two adsorption units capable of alternately adsorbing, the adsorption units are matched with a transverse rail, a hydraulic cylinder, an electromagnetic adsorption module and a driving assembly to realize the adjustment of the distance between the vehicle body and a tank wall and the circumferential movement without a rail, the two groups of longitudinal moving mechanisms at the top of the vehicle body synchronously drive the longitudinal displacement of the upper adsorption units, the welding height is accurately adjusted, the welding device at the middle part of the vehicle body can longitudinally move along the height direction, the circumferential movement of the vehicle body is followed, and the longitudinal movement of the welding device per se is followed to finish the longitudinal seam welding. According to the invention, the welding device can move along the circumferential direction of the tank wall without a track, the angle of the welding device can be flexibly adjusted, the welding efficiency, the welding precision and the construction safety are improved, and the welding device is suitable for welding construction scenes in a tank by a vertical storage tank inversion method.

Inventors

  • XU ZIWEI
  • GUO SHUAI
  • WANG ZHONGHU
  • CHENG DONG
  • GE JIA
  • LI ZHIQIANG

Assignees

  • 中国化学工程第十三建设有限公司

Dates

Publication Date
20260508
Application Date
20260330

Claims (10)

  1. 1. An automated welding platform for a vertical storage tank, comprising: A vehicle body (1), wherein one side of the vehicle body (1) is a welding side, The adsorption platform comprises 4 groups of adsorption devices (2) which are respectively positioned at four corner areas of the welding side of the vehicle body (1), each group of adsorption devices (2) comprises two adsorption units (21) horizontally arranged along the axial direction of the vertical storage tank, the two adsorption units (21) can realize alternate adsorption to drive the vehicle body (1) to move along the circumferential direction of the tank wall of the vertical storage tank, The adsorption unit (21) comprises -A transverse rail (211), said transverse rail (211) being connected to said vehicle body (1), The hydraulic cylinder (212) is arranged in the transverse track (211), the output end faces the welding side of the vehicle body (1) and transversely slides with the transverse track (211) so as to adjust the distance between the vehicle body (1) and the arc tank of the vertical storage tank through hydraulic expansion and contraction, The electromagnetic adsorption module (3), the electromagnetic adsorption module (3) is rotationally connected with the end part of the hydraulic cylinder (212) and is used for being adsorbed and fixed with the arc tank wall of the vertical storage tank, -A driving assembly (4), said driving assembly (4) being connected to said transversal track (211), driving said hydraulic cylinder (212) to move transversally within the transversal track (211); And also comprises The longitudinal moving mechanism (5) is provided with two groups, is fixed on two sides of the top of the vehicle body (1), is connected with two groups of adsorption devices (2) above the vehicle body (1) in a one-to-one correspondence manner, and synchronously drives two adsorption units (21) above the vehicle body (1) to longitudinally displace; welding set (6), welding set (6) are located the middle part region of automobile body (1), can be along automobile body (1) direction of height longitudinal movement, just welding set (6) are along jar body circumference removal along automobile body (1), accomplish the girth welding of vertical storage tank wall, accomplish the longitudinal joint welding of tank wall through self longitudinal movement simultaneously.
  2. 2. An automated welding platform for a vertical tank as defined in claim 1, wherein, The electromagnetic adsorption module (3) comprises An adsorption main body (31), The support rods (32), the support rods (32) are provided with a plurality of support rods which are mutually parallel, one end of each support rod (32) is connected with the adsorption main body (31) in a sliding way, The adsorption terminals (33), the adsorption terminals (33) and the number of the support rods (32) are in one-to-one correspondence, and are rotationally connected to the other end parts of the support rods (32), the adsorption terminals (33) are electrically connected with the energy supply modules, and the adsorption units are controlled by the on-off electricity of the energy supply modules to adsorb or separate from the arc tank walls of the vertical storage tanks.
  3. 3. An automated welding platform for vertical storage tanks according to claim 1, characterized in that the drive assembly (4) comprises The limiting rod (41) penetrates through the transverse rail (211) and is distributed along the length direction of the transverse rail (211), and the limiting rod (41) penetrates through the hydraulic cylinder (212) and is connected with the hydraulic cylinder (212) in a sliding mode; The screw rod (42) penetrates through the transverse track (211) and is parallel to the limiting rod (41), and the screw rod (42) penetrates through the hydraulic cylinder (212) and is in threaded connection with the hydraulic cylinder (212); and a transverse driving motor (43) fixed at one end of the transverse track (211) and driving the screw (42) to rotate.
  4. 4. An automated welding platform for a vertical storage tank according to claim 1, wherein the longitudinal moving mechanism (5) is composed of two groups of first oil cylinders (51), the main body of each first oil cylinder (51) is fixed on the upper surface of the vehicle body (1), and the end part of the output shaft of each first oil cylinder (51) penetrates into the vehicle body (1) and is fixedly connected with the transverse rail (211).
  5. 5. An automated welding platform for vertical storage tanks according to claim 1, characterized in that the welding device (6) comprises The vertical sliding assembly (61) is fixed in the middle of the vehicle body (1) and is reversely distributed along the height of the vehicle body (1); A welding execution unit which is connected with the vertical sliding component (61) in a sliding way, And the rotation adjusting assembly (62) is arranged between the vertical sliding assembly (61) and the welding execution unit and used for fixing the welding execution unit and adjusting the rotation angle of the welding execution unit so as to be suitable for a welding gap.
  6. 6. An automated welding platform for vertical storage tanks according to claim 5, characterized in that the vertical skid assembly (61) comprises A vertical sliding rail (611), wherein the vertical sliding rail (611) is arranged on the vehicle body (1) along the height direction of the vehicle body (1), The two second oil cylinders (612) are arranged, are respectively positioned at the upper end and the lower end of the vertical sliding rail (611), one end of each second oil cylinder (612) is fixed on the vehicle body (1), and the output end part of each second oil cylinder (612) is rotationally connected with the vertical sliding rail (611); The vertical lead screw (613), the vertical lead screw (613) is arranged parallel to the vertical sliding rail (611), two ends of the vertical lead screw are rotationally connected with the vertical sliding rail (611), and the welding execution unit is slidingly connected with the vertical sliding rail (611) and is in threaded connection with the vertical lead screw (613); The vertical driving motor (614), vertical driving motor (614) are fixed in vertical slide rail (611) tip and drive vertical lead screw (613) and rotate, drive welding execution unit along the accurate displacement of automobile body (1) direction of height.
  7. 7. An automated welding platform for a vertical tank as defined in claim 6, wherein, The rotation adjustment assembly (62) includes The base (621) is positioned in the vertical sliding rail (611) and slides along the length direction of the vertical sliding rail (611), and the vertical lead screw (613) penetrates through the base (621) and is in threaded connection with the base (621); The fixing frame (622) is positioned on one side of the base (621), is rotatably connected with the base (621), and is used for fixing a welding gun of the welding execution unit in the inner space; And a rotation motor (623), wherein the rotation motor (623) is coaxially arranged on the rotation shaft of the fixed frame (622) and drives the fixed frame (622) to rotate on one side of the base (621).
  8. 8. The automated welding platform for a vertical storage tank of claim 7, wherein the welding execution unit comprises The welding gun is detachably and fixedly connected in the fixed frame (622), The wire feeding mechanism is connected with the welding wire input end of the welding gun, And the shielding gas interface is connected with the gas input end of the welding gun.
  9. 9. An automated welding platform for vertical storage tanks according to claim 1, characterized in that the vehicle body (1) is provided with safety protection means for aloft work, comprising The passive protection assembly comprises a safety rope (11), one end of the safety rope (11) is fixedly connected to the top of the vehicle body (1), and the other end of the safety rope is connected with a fixed point of the tank wall of the vertical storage tank.
  10. 10. The automated welding platform for a vertical storage tank of claim 9, wherein the safety shield apparatus further comprises The active protection assembly comprises a plurality of folding inflatable bags (12), wherein the folding inflatable bags (12) are fixed in corner areas of the vehicle body (1), an inflator pump matched with the folding inflatable bags (12) is arranged on the vehicle body (1), and the inflatable bags can be inflated and unfolded rapidly to form a buffer protection layer.

Description

Automatic welding platform for vertical storage tank Technical Field The invention relates to the field of welding equipment in general, in particular to an automatic welding platform for a vertical storage tank. Background At present, a flip-chip method is generally adopted for construction of a small vertical storage tank within 10000m < 3 >, the process comprises the steps of firstly completing assembly welding of a top ring wallboard of the storage tank and a tank top, then integrally lifting the welded upper structure by a lifting device, and assembling and welding the tank wallboard layer by layer below, so that the high-altitude work load and the scaffold construction procedure can be greatly reduced, the construction site space is particularly adapted to a limited construction scene, and in the flip-chip method construction, the welding operation of longitudinal seams and circumferential seams of the tank wall of the storage tank is a key link which directly influences the whole storage tank construction period and the subsequent use safety. At present, most of automatic welding equipment for welding operation in a tank by adopting a storage tank inversion method is a rail type welding trolley, the equipment needs to lay a special walking rail on the inner side of the tank wall of the storage tank in advance, and then the trolley at the bottom of the vehicle body moves along the rail to realize welding operation, so that the traditional manual welding can be replaced to a certain extent, the welding efficiency is improved, but a plurality of technical defects which are difficult to solve still exist in practical construction application, and the requirements of high efficiency, high precision and high suitability of the welding construction in the current engineering cannot be met. Firstly, the walking track of the rail type welding trolley is completely constrained by the prefabricated track, the track needs to be customized and processed according to the diameters of different storage tanks, in a narrow construction space in the tank, the laying and calibrating work of the track is large in workload and time-consuming to assemble and disassemble, and once slight deviation occurs in roundness and height of the track, the clamping and deviation can occur in the moving process of the trolley body, the welding precision is directly affected, the track with different specifications is required to be replaced for the storage tanks with different diameters, the universality of equipment is extremely low, and the construction auxiliary procedure and the whole time cost are greatly increased. Secondly, although a part of the track-free welding trolley is fixed with the tank wall in a magnetic attraction or vacuum adsorption mode, the adsorption plates of the equipment are of an integral type plane structure or a single-curvature arc structure, the arc profile of the tank wall of the storage tank cannot be self-adapted, the local flatness of the tank wall is difficult to match, the local suspension, point contact or line contact of the adsorption surface is easy to occur, the effective adsorption area is small, the adsorption force is unevenly distributed, the skid and shake of the trolley body are easy to occur in the welding or moving process, the welding precision is seriously reduced, and the potential safety hazard of high-altitude construction in the tank is also present. Disclosure of Invention According to the invention, the automatic welding platform for the vertical storage tank is characterized by comprising a vehicle body, wherein one side of the vehicle body is a welding side, the adsorption platform comprises 4 groups of adsorption devices, the adsorption devices are respectively positioned at four end corner areas of the welding side of the vehicle body, each group of adsorption devices comprises two adsorption units horizontally arranged along the axial direction of the vertical storage tank, the two adsorption units can realize alternate adsorption to drive the vehicle body to move along the circumferential direction of the tank wall of the vertical storage tank, the adsorption units comprise transverse tracks, the transverse tracks are connected with the vehicle body, a hydraulic cylinder is arranged in the transverse tracks, the output end of the hydraulic cylinder faces the welding side of the vehicle body and transversely slides with the transverse tracks, the distance between the vehicle body and an arc-shaped tank of the vertical storage tank is adjusted through hydraulic expansion, the electromagnetic adsorption modules are rotatably connected to the end parts of the hydraulic cylinder and are used for being fixedly adsorbed with the arc-shaped tank wall of the vertical storage tank, the driving components are connected to the transverse tracks and drive the hydraulic cylinder to transversely move in the transverse tracks, the longitudinal moving mechanism is further arranged, the lo