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CN-122007567-A - Automatic submerged arc welding equipment and welding method for roller frame

CN122007567ACN 122007567 ACN122007567 ACN 122007567ACN-122007567-A

Abstract

The invention relates to the technical field of submerged arc welding and discloses automatic submerged arc welding equipment for roller frames and a welding method, wherein the automatic submerged arc welding equipment comprises a placing table and an arc welding connector arranged at the top of the placing table, a movable frame is arranged at the top of the placing table, the arc welding connector is fixedly connected to one side of the movable frame, a fixed roller frame is fixedly connected to the top of the placing table, the movable roller frame is connected to the top of the placing table in a sliding manner, a jacking assembly is arranged in the placing table and is arranged on the surface of an equidistant assembly, water flow drives a first rotating rod to rotate through the cooperation of the micro-lifting assembly and the jacking assembly, so that the first rotating rod drives a fixed rod to rotate, a fixed rod reciprocating plate reciprocates, a sliding plate drives a driving rod to move up and down through a connecting rod, and the workpiece is lifted by the arc plate, and the movable roller frame is moved to a proper position, thereby achieving the effect of preventing idle running.

Inventors

  • CHANG HAI
  • LIAN ZHENG
  • YANG XUNSHAN
  • WANG XIAOYANG
  • SHI XIAOWEI

Assignees

  • 山东龙马重型机械有限公司

Dates

Publication Date
20260512
Application Date
20260411

Claims (10)

  1. 1. The automatic submerged arc welding equipment for the roller frame comprises a placing table (1) and an arc welding head (111) arranged at the top of the placing table (1), and is characterized in that: The arc welding connector (111) is fixedly connected to one side of the movable rack (11), a fixed rolling frame (12) is fixedly connected to the top of the movable rack (1), and a movable rolling frame (13) is slidably connected to the top of the movable rack (1); The jacking assembly (2) is arranged in the placing table (1) and is used for jacking the cylindrical workpiece, so that the movable rolling frame (13) moves, the cylindrical workpiece is placed on the fixed rolling frame (12) and the movable rolling frame (13), the jacking assembly (2) comprises a plurality of jacking pieces (21) fixedly connected in the placing table (1), and arc plates (213) are fixedly connected to the tops of the jacking pieces (21); The equidistant assembly (3) is arranged in the placing table (1) and is used for preventing the cylindrical workpiece from tilting at the top of the arc-shaped plate (213) when the cylindrical workpiece is lifted by the plurality of jacking pieces (21); The micro-lifting assembly (4) is arranged on the surface of the equidistant assembly (3) and used for avoiding abrasion between the bottoms of the jacking members (21) and the inner wall of the placing table (1) when the equidistant assembly (3) moves the jacking members (21), so that the jacking members (21) are not located at the same horizontal height and are in dumping danger.
  2. 2. The automatic submerged arc welding equipment for the roller frame, as set forth in claim 1, wherein the jacking component (2) further comprises a sliding plate (22) slidably connected inside the placement table (1), the surfaces of the plurality of jacking pieces (21) are provided with driving rods (211), one ends, far away from the jacking pieces (21), of the driving rods (211) are hinged with sliding blocks (212), sliding grooves (221) are formed in the sliding plate (22), and the sliding blocks (212) are slidably connected inside the sliding grooves (221).
  3. 3. The automatic submerged arc welding equipment for the roller frame is characterized in that the jacking component (2) further comprises a mounting plate (23) fixedly connected to the inside of the placing table (1) and a second rotating rod (24) rotatably connected to the inside of the placing table (1), a first rotating rod (231) is rotatably connected to the inside of the mounting plate (23), a plurality of first arc pieces (232) are fixedly connected to the surface of the first rotating rod (231) and located in the mounting plate (23), a fixing plate (233) is fixedly connected to one end of the first rotating rod (231), and a fixing rod (234) is fixedly connected to one end of the fixing plate (233).
  4. 4. The automatic submerged arc welding equipment for the roller frame, as set forth in claim 3, characterized in that a reciprocating plate (241) is fixedly connected to the surface of the second rotating rod (24), a reciprocating groove (242) is formed in the surface of the reciprocating plate (241), the fixing rod (234) is disposed in the reciprocating groove (242), a connecting rod (243) is rotatably connected to the back of the reciprocating plate (241), and one end of the connecting rod (243) is fixedly connected with the surface of the sliding plate (22).
  5. 5. The automatic submerged arc welding equipment for the roller frame is characterized in that the equidistant assembly (3) comprises a plurality of fixing plates (31) which are slidably connected inside a placing table (1), a plurality of jacking pieces (21) are arranged inside the fixing plates (31), a plurality of first rotating strips (311) and second rotating strips (312) are rotatably connected to two ends of the top of the fixing plates (31), one end of each first rotating strip (311) and one end of each second rotating strip (312) are rotatably connected through connecting columns (313), guide blocks (314) are fixedly connected to the tops of the fixing plates (31), and screw blocks (315) are fixedly connected to the bottoms of one fixing plate (31).
  6. 6. The automatic submerged arc welding equipment for the roller frame, as set forth in claim 5, characterized in that the equidistant assembly (3) further comprises a guide rod (32) fixedly connected to the inside of the placement table (1) and a driving disc (33) fixedly connected to one end inside the placement table (1), the guide block (314) is slidably connected to the surface of the guide rod (32), a screw rod (331) is rotatably connected to the inside of the driving disc (33), a screw block (315) is in threaded connection to the surface of the screw rod (331), a second arc piece (332) is fixedly connected to the surface of the screw rod (331) and located inside of the driving disc (33), and the driving disc (33) is communicated with the mounting disc (23) through a first connecting pipe (235).
  7. 7. The automatic submerged arc welding equipment for the roller frame, as set forth in claim 6, wherein the micro-lifting assembly (4) comprises a water tank (41) fixedly connected to the inside of the placement table (1) and a plurality of fixed cylinders (42) fixedly connected to the tops of the fixed plates (31), a water suction pump (411) is fixedly connected to one side of the water tank (41), a water suction pipe is arranged at one end of the water suction pump (411), the water suction pipe is arranged inside the water tank (41), and the water suction pump (411) is communicated with one of the fixed cylinders (42) through a water inlet pipe (412).
  8. 8. The automatic submerged arc welding equipment for the roller frame is characterized in that a sliding disc (421) is connected inside the fixed cylinder (42) in a sliding mode, a movable rod (422) is fixedly connected to the bottom of the sliding disc (421), a mounting ring (425) is fixedly connected to the bottom of the movable rod (422), the mounting ring (425) is fixedly connected to the surface of the jacking piece (21), a first spring (423) is fixedly connected to the top of the sliding disc (421), and adjacent fixed cylinders (42) are communicated through a connecting pipe (424).
  9. 9. The automatic submerged arc welding equipment for the roller frame, as set forth in claim 8, is characterized in that one of the fixed cylinders (42) is communicated with the driving disc (33) through a second communicating pipe (333), and the mounting disc (23) is communicated with the water tank (41) through a return pipe.
  10. 10. An automatic submerged arc welding method for a roller frame is characterized in that the automatic submerged arc welding device for the roller frame is adopted according to any one of claims 1 to 9, and specifically comprises the following steps: Step 1, adjusting radians of a fixed rolling frame (12) and a movable rolling frame (13), and then placing a cylindrical workpiece between the fixed rolling frame (12) and the movable rolling frame (13) through hoisting equipment; Step 2, when the center point of the cylindrical workpiece is not coincident with the center points of the fixed rolling frame (12) and the movable rolling frame (13), starting the micro-lifting assembly (4), enabling the micro-lifting assembly (4) to drive the jacking assembly (2), further enabling the jacking assembly (2) to lift the cylindrical workpiece, and enabling the movable rolling frame (13) to move to a proper position; Step 3, before the jacking component (2) lifts the cylindrical workpiece, the micro-lifting component (4) drives the equidistant component (3) to drive the plurality of jacking pieces (21) to move, so that the plurality of jacking pieces (21) are equidistantly placed at the bottom of the cylindrical workpiece; Step 4, before the equidistant assembly (3) drives the jacking pieces (21) to move, the micro-lifting assembly (4) lifts the jacking pieces (21), so that the center points of the jacking pieces (21) are prevented from being not at the same horizontal height due to abrasion between the jacking pieces (21) and the inner wall of the placing table (1); And 5, after the cylindrical workpiece is stably placed on the fixed rolling frame (12) and the movable rolling frame (13), placing the support piece in the cylindrical workpiece, and then performing submerged arc welding on the cylindrical workpiece and the support piece through the arc welding head (111).

Description

Automatic submerged arc welding equipment and welding method for roller frame Technical Field The invention relates to the technical field of submerged arc welding, in particular to automatic submerged arc welding equipment and a welding method for a roller frame. Background The roller frame is matched with submerged arc welding to form a core operation mode of circular seam submerged arc welding of cylindrical workpieces (such as pipelines, storage tanks and cylinders), the core principle is that the roller frame drives the workpieces to rotate at a constant speed, a submerged arc welding machine head is fixed (or small-amplitude swing arc) to realize continuous automatic welding of circular seams, the welding efficiency and the welding seam quality can be greatly improved, and the submerged arc welding machine is suitable for welding medium-thick wall cylindrical workpieces made of carbon steel, low alloy steel and the like. Publication number CN110449805A discloses automatic centering welding gyro wheel frame relates to welding technical field, including the chassis, the top one side fixedly connected with first stand of chassis, the top of chassis just is located one side fixedly connected with second stand of first stand, and the top of chassis just is located one side fixedly connected with third stand of second stand, and the top of chassis just is located one side of first stand and is provided with first hydraulic telescoping rod, the top of first hydraulic telescoping rod is provided with first riding wheel down, and one side of first stand just is located the top of first riding wheel and is provided with first riding wheel down, and the top of chassis just is located one side of second stand and is provided with the second hydraulic telescoping rod. The problem that the traditional electrode welding is manually operated, the welding straightness cannot be controlled, and the efficiency is very low is solved. Although the problem of low welding efficiency can be solved in the above-mentioned application and prior art, but when the above-mentioned application and prior art use the gyro wheel frame to carry out submerged arc welding to cylindrical work piece, when cylindrical work piece is placed at the top of gyro wheel frame, the central point of cylindrical work piece can not coincide with the central point of two gyro wheel frames, consequently, when the gyro wheel frame rotates cylindrical work piece, the gyro wheel frame of one side can bear too much work piece weight, and then make the cylindrical work piece atress at the other end gyro wheel frame top little even unsettled, consequently can cause intermittent skidding or idle running, and then influence welding quality, and when using a plurality of jacks to lift up the work piece, cylindrical work piece is because the focus skew on the surface of jack, consequently can lead to the work piece to take place the risk of empting, and when equidistant removal is carried out a plurality of jacks, the bottom of jack can take place the friction with the support, long-time use can lead to the bottom of jack or the top of support take place wearing and then lead to the center of a plurality of jacks not to be in same level, and then increase and lift up the risk, therefore the invention proposes an automatic gyro wheel frame welding and method. Disclosure of Invention (One) solving the technical problems Aiming at the defects of the prior art, the invention provides automatic submerged arc welding equipment for a roller frame and a welding method, which have the advantages of idle running prevention, inclination prevention, damage prevention and the like, and solve the problems that when the roller frame is used for submerged arc welding of a cylindrical workpiece in the prior art, when the cylindrical workpiece is placed at the top of the roller frame, the center point of the cylindrical workpiece is not overlapped with the center points of two roller frames, so when the roller frame rotates the cylindrical workpiece, the roller frame at one side bears excessive weight of the workpiece, the cylindrical workpiece at the top of the roller frame at the other end is stressed little or even suspended, intermittent slipping or idle running is caused, the welding quality is influenced, the surface of the cylindrical workpiece on the lifting jack is inclined due to the gravity center offset, and when the lifting jack is used for equidistant movement, the bottom of the lifting jack is rubbed with a support, the bottom of the lifting jack or the top of the support is worn, and the centers of the lifting jack are not at the same level due to long-term use, and the lifting risk is increased. (II) technical scheme In order to achieve the purposes of preventing idling, avoiding tilting, avoiding damage and the like, the invention provides the following technical scheme that the automatic submerged arc welding equipment for the roller frame comprises a placing ta