Rotary supporting device based on closed kettle inner circular seam submerged arc welding

Abstract

The utility model discloses a rotary supporting device based on closed kettle inner circular seam submerged arc welding. The rotary supporting device comprises a welding positioning mechanism, a main shaft fixing table, a sliding rail, a rotary supporting table, a hydraulic cylinder and a clamping rotating mechanism. The rotary supporting table is arranged between the two sliding rails and slidably connected with the sliding rails. The hydraulic cylinder is connected with the rotary supporting table and controls the rotary supporting table to do reciprocating linear motion in the direction of the sliding rails. The welding positioning mechanism is located at the front end of the rotary supporting table. The clamping rotating mechanism is located at the rear end of the rotating supporting table. The main shaft fixing table is connected with a main shaft of the clamping rotating mechanism. The welding positioning mechanism can stretch a welding head and a soldering flux outlet into the reaction kettle from the kettle opening of the reaction kettle according to different reaction kettles; the rotary supporting table can support the reaction kettle and enable the reaction kettle to rotate on the supporting table; and the clamping and rotating mechanism can stably clamp the reaction kettle, and drives the reaction kettle to rotate after clamping, so that the submerged-arc welding efficiency and quality are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reactor welding assistance, and particularly relates to a rotary support device based on submerged arc welding of annular seams in a closed reactor. Background Art

[0002] Submerged arc welding is a welding method in which the arc burns under the flux layer. Its inherent advantages of stable welding quality, high welding productivity, no arc light and little smoke make it the main welding method in the production of important steel structures such as pressure vessels, pipe section manufacturing, box beams and columns.

[0003] Manual welding is generally used for welding the internal annular seam of a closed reactor, which is not only inefficient, but also has a harsh working environment that is harmful to the health of workers. Existing submerged arc welding equipment can weld the inside of a reactor, but it is difficult to weld a closed reactor with a small opening, and the welding effect is not good.

[0004] After searching, the utility model with the prior art authorization announcement number CN 216829086 U discloses a rotary support device based on submerged arc welding of annular seams in a closed kettle, which belongs to the field of reactor production welding, including a support frame, a motor is installed on the top of the support frame, a vertical plate is fixedly connected to one side of the top of the support frame vertically, the output shaft of the motor passes through the vertical plate horizontally, a rotating plate is fixedly sleeved on the output shaft of the motor, a connecting rod is fixedly connected to the side of the rotating plate away from the output shaft of the motor horizontally, a moving block is movably sleeved on one end of the connecting rod away from the rotating plate, a rotating plate is arranged on one side of the moving block, and a horizontal rod is movably sleeved on the top of the rotating plate near the moving block, by setting the motor, the motor drives the rotating plate, the rotating plate drives the connecting rod, and the connecting rod drives the moving block to rotate together, so that the moving block drives the rotating plate to swing. The rotary support device of the device acts on the welding machine, and the rotary support device is not set for the reactor. During the welding process, the flux used for submerged arc welding will slide on the upper part of the inner wall of the reactor, resulting in poor welding effect.

[0005] After searching, the invention with the prior art authorization publication number CN 110340499 A provides a submerged arc welding device for annular seams in a pressure vessel, including a base, on which a driving assembly for driving the horizontal rotation of the pressure vessel is installed; a lifting device is slidably provided on one side of the base, the lifting device is connected to a mounting plate, and a first submerged arc welding head is installed on the mounting plate; a mounting frame is provided inside the pressure vessel, the mounting frame is connected to a plurality of hydraulic telescopic rods, and the ends of the hydraulic telescopic rods are all provided with universal casters, a second submerged arc welding head is provided inside the mounting frame, and the welding points of the first submerged arc welding head and the second submerged arc welding head are located on the same vertical line; and a directional propulsion device connected to the mounting frame is also included. The present invention uses the second submerged arc welding head supported by the internal rotation of the pressure vessel and the first submerged arc welding head outside to simultaneously perform double-sided welding on the dislocation of the annular weld, thereby overcoming the defects of slow welding speed of the pressure vessel and small welding range of the submerged arc welding machine, and realizing the completion of double-sided welding of the annular seam after the pressure vessel rotates one circle. The device is suitable for welding reactors with larger openings, and it is difficult to weld closed reactors with smaller openings. Summary of the invention

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a rotating support device based on submerged arc welding of annular seams in a closed reactor. The welding positioning mechanism can extend the welding head and the flux outlet from the reactor mouth according to different reactors; the rotating support table can support the reactor and enable the reactor to rotate on the support table; the clamping rotation mechanism can firmly clamp the reactor and drive the reactor to rotate after clamping.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A rotating support device based on submerged arc welding of annular seams in a closed kettle comprises a welding positioning mechanism, a spindle fixing platform, a slide rail, a rotating support platform, a hydraulic cylinder and a clamping and rotating mechanism; the rotating support platform is arranged between two slide rails and is slidably connected to the slide rails, the hydraulic cylinder is connected to the rotating support platform and controls the rotating support platform to perform reciprocating linear motion along the slide rail direction; the welding positioning mechanism is located at the front end of the rotating support platform; the clamping and rotating mechanism is located at the rear end of the rotating support platform, and the spindle fixing platform is connected to the spindle of the clamping and rotating mechanism.

[0009] The welding positioning mechanism includes a motor I, a motor mounting plate I, a lifting column, a slider, a lead screw, a telescopic arm, a flux box, a flux delivery pipe, a limit plate I, a limit plate II, a flux outlet, a welding head, a motor II, a motor mounting plate II, and a rotating telescopic column; the motor I is mounted on the motor mounting plate I, the motor mounting plate I is arranged on the top of the lifting column, the motor I is connected to the lead screw, the lead screw is connected to the slider, the slider is arranged on the lifting column and is slidably connected to the lifting column, and the motor I controls the up and down movement of the slider through the lead screw; the telescopic arm is arranged at the front end of the slider, and an electric push rod is arranged inside the telescopic arm to control its own extension and retraction. A rotating telescopic column is arranged at the front end of the telescopic arm, and an electric push rod is arranged inside the rotating telescopic column to control its own contraction; motor II is installed on motor mounting plate II, and motor mounting plate II is arranged at the front end of the telescopic arm, and motor II controls the rotation of the rotating telescopic column; a flux box is arranged at the top of the lifting column, and a flux delivery pipe is connected to the bottom of the flux box, and a flux outlet is connected to the bottom of the flux delivery pipe, a limit plate I is arranged on the side of the telescopic arm, and a limit plate II is arranged on the side of the rotating telescopic column, and the flux delivery pipe is limited by the limit plate I and the limit plate II; a welding head is arranged below the rotating telescopic column, and keeps a certain distance from the flux outlet.

[0010] The clamping and rotating mechanism includes a motor III, a motor mounting plate III, a spindle, a positioning frame, a motor IV, a motor mounting plate IV, a gear, a connecting rod I, a connecting rod II, a connecting rod III, a buffer shaft, a guide shaft, a limit block, a spring, a slide groove, a clamping plate, a limit plate, and a rotating electrical connector; the motor III is mounted on the motor mounting plate III, the motor mounting plate III is arranged on the spindle fixing table, the output end of the motor III is connected to the spindle, the spindle passes through the spindle fixing table to connect the positioning frame, and the rotating electrical connector is sleeved on the spindle; the motor IV is mounted on the motor mounting plate IV, the motor mounting plate IV is arranged on the positioning frame, and the gear is provided with two sets of gears arranged inside the positioning frame and meshing with each other The motor IV controls the rotation of one of the gears; the gear connects the connecting rod I, the connecting rod II is arranged on the positioning frame, the connecting rod III connects the connecting rod I and the connecting rod II, the gear, the connecting rod I, the connecting rod II, the connecting rod III, the buffer shaft, the guide shaft, the limit block, the spring, the slide groove and the splint are arranged in two groups and are symmetrically distributed; the front end of the connecting rod III is provided with a guide shaft, the guide shaft is slidably connected with the buffer shaft and the buffer shaft is partially sleeved inside the guide shaft, one end of the buffer shaft is provided with a limit block, the limit block is also arranged in the slide groove on the guide shaft, a spring is arranged between the limit block and the guide shaft, and the other end of the buffer shaft is provided with a splint; the limit plate is arranged at the front end of the positioning frame.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1) During work, the closed reactor to be welded is placed on the rotating support table. The distance between the two sets of rotating support tables is controlled by the hydraulic cylinder to adjust the reactor to a suitable height. The rollers used in the rotating support table can support the reactor and ensure that the surface of the reactor is not damaged during rotation;

[0013] 2) Motor I controls the lifting and lowering of the slider through the lead screw, so that the telescopic arm set at the front end of the slider is aligned with the reactor mouth, and the rotating telescopic column is extended into the reactor through the extension of the telescopic arm. After the rotating telescopic column enters the reactor, motor II works to rotate the rotating telescopic column. The rotating telescopic column then adjusts the welding head and the flux outlet to a suitable welding height through its own extension. Some closed reactors have small openings, which is very inconvenient for submerged arc welding. The welding positioning mechanism can extend into some reactors with small openings by adjusting the height of the slider, the extension of the telescopic arm, and the rotation and extension of the rotating telescopic column, which greatly improves the efficiency and quality of submerged arc welding;

[0014] 3) The clamping and rotating mechanism controls the rotation of the gear through motor IV. Connecting rods I, II and III form a connecting rod mechanism to drive the clamping plate to clamp the reactor. During the clamping process, the clamping force is buffered by the buffer shaft, guide shaft, limit block and spring to avoid damage to the reactor surface due to excessive clamping force. The limit plate ensures the relative position of the reactor and the clamping and rotating mechanism as a whole. Motor III drives all the mechanisms at the front end of the spindle to rotate through the spindle, thereby driving the reactor to rotate. Motor IV is installed on motor mounting plate IV, which is set on the positioning frame. When the mechanism at the front end of the spindle rotates, motor IV rotates together. If motor IV is connected normally, the connecting wires will be entangled during the rotation process. The rotating electrical connector can avoid the entanglement of the wires caused by rotation. The rotating electrical connector is set on the spindle, and the motor IV is connected to the rotating electrical connector when wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 This is a schematic diagram of the structure of a rotary support device based on submerged arc welding of annular seams in a closed kettle according to the utility model;

[0016] Attached Figure 2 yes Figure 1 Schematic diagram of welding positioning mechanism Figure 1 ;

[0017] Attached Figure 3 yes Figure 1 Schematic diagram of welding positioning mechanism Figure 2 ;

[0018] Attached Figure 4 yes Figure 1 Schematic diagram of the middle clamping and rotating mechanism Figure 1 ;

[0019] Attached Figure 5 yes Figure 1 Schematic diagram of the middle clamping and rotating mechanism Figure 2 ;

[0020] Attached Figure 6 yes Figure 1Schematic diagram of the middle clamping and rotating mechanism Figure 3 ;

[0021] Attached Figure 7 This is a schematic diagram of the use state of a rotary support device based on submerged arc welding of annular seams in a closed kettle according to the utility model;

[0022] In the figure: 11, welding positioning mechanism; 12, spindle fixing table; 13, slide rail; 14, rotating support table; 15, hydraulic cylinder; 16, clamping and rotating mechanism; 101, motor I; 102, motor mounting plate I; 103, lifting column; 104, slider; 105, lead screw; 106, telescopic arm; 107, flux box; 108, flux delivery pipe; 109, limit plate I; 110, limit plate II; 111, flux outlet; 112, welding head; 113, motor II; 1 14. Motor mounting plate II; 115. Rotating telescopic column; 201. Motor III; 202. Motor mounting plate III; 203. Spindle; 204. Positioning frame; 205. Motor IV; 206. Motor mounting plate IV; 207. Gear; 208. Connecting rod I; 209. Connecting rod II; 210. Connecting rod III; 211. Buffer shaft; 212. Guide shaft; 213. Limit block; 214. Spring; 215. Slide; 216. Clamp; 217. Limit plate; 218. Rotating electrical connector. DETAILED DESCRIPTION

[0023] To facilitate the understanding of those skilled in the art, Figure 1-7 , the technical solution of the utility model is further specifically described.

[0024] A rotating support device based on submerged arc welding of annular seams in a closed kettle comprises a welding positioning mechanism 11, a spindle fixing platform 12, a slide rail 13, a rotating support platform 14, a hydraulic cylinder 15, and a clamping and rotating mechanism 16; the rotating support platform 14 is arranged between two slide rails 13 and is slidably connected to the slide rails 13, the hydraulic cylinder 15 is connected to the rotating support platform 14 and controls the rotating support platform 14 to make reciprocating linear motion along the slide rails 13; the welding positioning mechanism 11 is located at the front end of the rotating support platform 14; the clamping and rotating mechanism 16 is located at the rear end of the rotating support platform 14, and the spindle fixing platform 12 is connected to the spindle 203 of the clamping and rotating mechanism 16.

[0025] The welding positioning mechanism 11 includes a motor Ⅰ101, a motor mounting plate Ⅰ102, a lifting column 103, a slider 104, a lead screw 105, a telescopic arm 106, a flux box 107, a flux delivery pipe 108, a limit plate Ⅰ109, a limit plate Ⅱ110, a flux outlet 111, a welding head 112, a motor Ⅱ113, a motor mounting plate Ⅱ114, and a rotating telescopic column 115; the motor Ⅰ101 is installed on the motor mounting plate Ⅰ102, the motor mounting plate Ⅰ102 is arranged on the top of the lifting column 103, the motor Ⅰ101 is connected to the lead screw 105, the lead screw 105 is connected to the slider 104, the slider 104 is arranged on the lifting column 103 and is slidably connected to the lifting column 103, and the motor Ⅰ101 controls the up and down movement of the slider 104 through the lead screw 105; the telescopic arm 106 is arranged at the front end of the slider 104, and the telescopic arm 106 is provided with an electric The push rod controls its own extension and retraction, and the rotating telescopic column 115 is arranged at the front end of the telescopic arm 106. An electric push rod is arranged inside the rotating telescopic column 115 to control its own contraction; the motor II 113 is installed on the motor mounting plate II 114, and the motor mounting plate II 114 is arranged at the front end of the telescopic arm 106. The motor II 113 controls the rotation of the rotating telescopic column 115; the flux box 107 is arranged at the top of the lifting column 103, and the flux box 107 is connected to the flux delivery pipe 108 at the bottom, and the flux delivery pipe 108 is connected to the flux outlet 111 at the bottom, the limit plate I 109 is arranged on the side of the telescopic arm 106, and the limit plate II 110 is arranged on the side of the rotating telescopic column 115. The flux delivery pipe 108 is limited by the limit plate I 109 and the limit plate II 110; the welding head 112 is arranged below the rotating telescopic column 115, and keeps a certain distance from the flux outlet 111.

[0026] The clamping and rotating mechanism 16 includes a motor III 201, a motor mounting plate III 202, a spindle 203, a positioning frame 204, a motor IV 205, a motor mounting plate IV 206, a gear 207, a connecting rod I 208, a connecting rod II 209, a connecting rod III 210, a buffer shaft 211, a guide shaft 212, a limit block 213, a spring 214, a slide 215, a clamping plate 216, a limit plate 217, and a rotating electrical connector 218; the motor III 201 is mounted on the motor The motor mounting plate III 202 is arranged on the spindle fixing platform 12, the output end of the motor III 201 is connected to the spindle 203, the spindle 203 passes through the spindle fixing platform 12 and is connected to the positioning frame 204, and the rotating electrical connector 218 is sleeved on the spindle 203; the motor IV 205 is installed on the motor mounting plate IV 206, and the motor mounting plate IV 206 is arranged on the positioning frame 204, and the gear 207 has two sets of gears arranged inside the positioning frame 204 and meshing with each other, and the motor The gear 207 is connected to the connecting rod Ⅰ208, the connecting rod Ⅱ209 is arranged on the positioning frame 204, the connecting rod Ⅲ210 connects the connecting rod Ⅰ208 and the connecting rod Ⅱ209, the gear 207, the connecting rod Ⅰ208, the connecting rod Ⅱ209, the connecting rod Ⅲ210, the buffer shaft 211, the guide shaft 212, the limit block 213, the spring 214, the slide groove 215, and the clamping plate 216 are provided with two groups and are symmetrically distributed; the connecting rod Ⅲ A guide shaft 212 is provided at the front end of 210, and the guide shaft 212 is slidably connected to the buffer shaft 211 and the buffer shaft 211 is partially sleeved inside the guide shaft 212. A limit block 213 is provided at one end of the buffer shaft 211, and the limit block 213 is also arranged in a slide groove 215 on the guide shaft 212. A spring 214 is provided between the limit block 213 and the guide shaft 212, and a clamping plate 216 is provided at the other end of the buffer shaft 211; a limit plate 217 is arranged at the front end of the positioning frame 204.

[0027] A rotary support device based on submerged arc welding of annular seams in a closed kettle, the working process is as follows:

[0028] During operation, the closed reactor to be welded is placed on the rotating support platform 14, and the distance between the two sets of rotating support platforms 14 is controlled by the hydraulic cylinder 15 to adjust the reactor to a suitable height. The rollers used in the rotating support platform 14 can support the reactor and ensure that the surface of the reactor is not damaged during rotation.

[0029] After the reactor is adjusted to a suitable height, the motor I 101 controls the lifting and lowering of the slider 104 through the screw 105, so that the telescopic arm 106 arranged at the front end of the slider 104 is aligned with the reactor mouth, and the rotating telescopic column 115 is extended into the reactor through the extension and retraction of the telescopic arm 106. After the rotating telescopic column 115 enters the reactor, the motor II 113 works to rotate the rotating telescopic column 115, and the rotating telescopic column 115 adjusts the welding head 112 and the flux outlet 111 to a suitable welding height through its own extension and retraction. By adjusting the height of the slider 104, the extension and retraction of the telescopic arm 106, and the rotation and extension of the rotating telescopic column 115, a closed-loop weld at any position inside the closed reactor can be welded.

[0030] The clamping rotating mechanism 16 controls the rotation of the gear 207 through the motor IV 205, and controls the swing of the connecting rod I 208 through the mutual meshing of the two gears 207. The connecting rod I 208, the connecting rod II 209, and the connecting rod III 210 form a connecting rod mechanism. The two groups of connecting rods I 208 and connecting rod III 210 swing forward to drive the two groups of connecting rods II 209 to swing inward, and the connecting rod II 209 drives the clamping plate 216 to clamp the reactor. During the clamping process, the buffer shaft 211, the guide shaft 212, the limit block 213, and the spring 214 buffer the clamping force to avoid excessive clamping force to damage the surface of the reactor. The limit plate 217 ensures the relative position of the reactor and the clamping rotating mechanism 16 as a whole. After the clamping plate 216 clamps the reactor, the motor III 201 is started, and all the mechanisms at the front end of the spindle 203 are driven to rotate through the spindle 203. At this time, the clamping plate 216 drives the reactor to rotate; the motor IV 205 is installed on the motor mounting plate IV 206, and the motor mounting plate IV 206 is set on the positioning frame 204. When the front end mechanism of the spindle 203 rotates, the motor IV 205 rotates together. If the motor IV 205 adopts normal wiring, the wires will be entangled during the rotation process. The rotating electrical connector 218 can avoid the entanglement of the wires caused by rotation. The rotating electrical connector 218 is set on the spindle, and the motor IV 205 is connected with the rotating electrical connector 218 when wiring.

[0031] The clamping and rotating mechanism 16 clamps the reactor to be welded, and drives the reactor to rotate after clamping. The welding positioning mechanism 11 extends the welding head 112 and the flux outlet 111 into the welding position in the reactor. After adjusting the appropriate height, the flux is poured out from the flux outlet, and the welding head is buried in the flux to start welding.

[0032] To sum up, electronic or electrical components including but not limited to motor I, motor II, motor III, motor IV, electric push rod, rotating electrical connector, etc. are components in the prior art, obtained through private customization or purchase, and the electrical connections between the components are conventional circuit connections or electrical connections in the prior art, and are not within the scope of protection of the present utility model.

[0033] In the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A rotary support device based on submerged arc welding of annular seams in a closed reactor, comprising a welding positioning mechanism, a spindle fixing table, a slide rail, a rotary support table, a hydraulic cylinder, and a clamping and rotating mechanism; characterized in that The rotating support platform is arranged between the two slide rails and is slidably connected to the slide rails. The hydraulic cylinder is connected to the rotating support platform and controls the rotating support platform to make reciprocating linear motion along the slide rails. The welding positioning mechanism is located at the front end of the rotating support platform. The clamping and rotating mechanism is located at the rear end of the rotating support platform. The spindle fixing platform is connected to the spindle of the clamping and rotating mechanism. The welding positioning mechanism includes a motor I, a motor mounting plate I, a lifting column, a slider, a lead screw, a telescopic arm, a flux box, a flux delivery pipe, a limit plate I, a limit plate II, a flux outlet, a welding head, a motor II, a motor mounting plate II, and a rotating telescopic column; The motor I is installed on the motor mounting plate I, the motor mounting plate I is arranged on the top of the lifting column, the motor I is connected to the lead screw, the lead screw is connected to the slider, the slider is arranged on the lifting column and is slidably connected to the lifting column; the telescopic arm is arranged at the front end of the slider, the telescopic arm is provided with an electric push rod inside, the rotating telescopic column is arranged at the front end of the telescopic arm, and the rotating telescopic column is provided with an electric push rod inside; the motor II is installed on the motor mounting plate II, and the motor mounting plate II is arranged at the front end of the telescopic arm; The flux box is arranged at the top of the lifting column, the bottom of the flux box is connected to the flux delivery pipe, the bottom of the flux delivery pipe is connected to the flux outlet, the limit plate I is arranged on the side of the telescopic arm, the limit plate II is arranged on the side of the rotating telescopic column, and the flux delivery pipe is limited by the limit plate I and the limit plate II; the welding head is arranged below the rotating telescopic column and keeps a certain distance from the flux outlet.

2. The rotary support device based on submerged arc welding of annular seams in a closed reactor according to claim 1 is characterized in that The clamping and rotating mechanism includes a motor III, a motor mounting plate III, a spindle, a positioning frame, a motor IV, a motor mounting plate IV, a gear, a connecting rod I, a connecting rod II, a connecting rod III, a buffer shaft, a guide shaft, a limit block, a spring, a slide groove, a clamping plate, a limit plate, and a rotating electrical connector; Motor III is installed on motor mounting plate III, which is arranged on the spindle fixing table. The output end of motor III is connected to the spindle, and the spindle passes through the spindle fixing table to connect the positioning frame, and the rotating electrical connector is sleeved on the spindle; motor IV is installed on motor mounting plate IV, which is arranged on the positioning frame, and there are two groups of gears arranged inside the positioning frame and meshing with each other, and motor IV controls the rotation of one of the gears; the gear connects connecting rod I, connecting rod II is arranged on the positioning frame, connecting rod III connects connecting rod I and connecting rod II, and the gear, connecting rod I, connecting rod II, connecting rod III, buffer shaft, guide shaft, limit block, spring, slide groove, and splint are arranged in two groups as a whole and are symmetrically distributed; a guide shaft is provided at the front end of connecting rod III, the guide shaft is slidably connected to the buffer shaft and the buffer shaft is partially sleeved inside the guide shaft, a limit block is provided at one end of the buffer shaft, and the limit block is also arranged in the slide groove on the guide shaft, a spring is arranged between the limit block and the guide shaft, and a splint is provided at the other end of the buffer shaft; the limit plate is arranged at the front end of the positioning frame.

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