CN111558766A - Large-scale cylinder inner and outer circle submerged arc welding system - Google Patents

Large-scale cylinder inner and outer circle submerged arc welding system Download PDF

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Publication number
CN111558766A
CN111558766A CN202010408419.6A CN202010408419A CN111558766A CN 111558766 A CN111558766 A CN 111558766A CN 202010408419 A CN202010408419 A CN 202010408419A CN 111558766 A CN111558766 A CN 111558766A
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CN
China
Prior art keywords
lifting
arc welding
motor
normally open
open contact
Prior art date
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Pending
Application number
CN202010408419.6A
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Chinese (zh)
Inventor
张明亮
王晋力
李渊
闫志鹏
张鑫
薛艳丽
李惠霞
周国虎
赵文军
姚小卫
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Shanxi Aerospace Qinghua Equipment Co Ltd
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Shanxi Aerospace Qinghua Equipment Co Ltd
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Application filed by Shanxi Aerospace Qinghua Equipment Co Ltd filed Critical Shanxi Aerospace Qinghua Equipment Co Ltd
Priority to CN202010408419.6A priority Critical patent/CN111558766A/en
Publication of CN111558766A publication Critical patent/CN111558766A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/18—Submerged-arc welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0538—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor for rotating tubes, e.g. rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply
    • B23K9/1043—Power supply characterised by the electric circuit
    • B23K9/1056—Power supply characterised by the electric circuit by using digital means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories

Abstract

The invention relates to a large cylinder inner and outer circle submerged arc welding system, belonging to the technical field of cylinder inner and outer circle submerged arc welding; the technical problem to be solved is as follows: the improvement of the hardware structure of the large-sized cylinder inner and outer circle submerged arc welding system is provided; the technical scheme for solving the technical problem is as follows: the large-sized cylinder inner and outer circle submerged arc welding system comprises a guide rail and circular rollers arranged at two ends of the guide rail in parallel, wherein the circular rollers are controlled and driven by a driving motor; the guide rail is also provided with a movable trolley, the movable trolley is provided with an arc welding device and a vehicle-mounted control cabinet, and the movable trolley is controlled and driven by a walking motor arranged on a trolley bottom plate; the arc welding device is internally provided with a pair of lifting stand columns, a submerged arc welding machine mounting arm and a submerged arc welding machine, the lifting stand columns are lifting stand columns vertically arranged on the moving trolley, a lifting screw rod is further arranged between the two lifting stand columns, and a lifting motor is arranged at the top of each lifting stand column; the invention is applicable to submerged arc welding systems.

Description

Large-scale cylinder inner and outer circle submerged arc welding system
Technical Field
The invention discloses a large cylinder inner and outer circle submerged arc welding system, and belongs to the technical field of cylinder inner and outer circle submerged arc welding.
Background
At present, with the continuous expansion of the application range of large circular pipelines and circular pressure vessels, the joint of two cylinders needs to be welded, when the butt weld seam welding of the large circular pipelines and the circular pressure vessels is generally carried out, the installation position of an automatic submerged arc welding machine needs to be calculated according to the welding position of the inner circles of the two cylinders to be butted, the automatic submerged arc welding machine is installed at the position after the installation position is determined, the two cylinders to be welded are hoisted to a circular roller, the position of the cylinder is adjusted, the welding position is aligned to the automatic submerged arc welding machine, the welding current is adjusted, a circular roller motor is started to drive the cylinder to rotate, the welding seam welding of the inner circle is completed, but the speed control of the circular roller motor basically depends on the visual observation of an operator, the adjustment is carried out through the experience of the operator, a certain error exists, and after the inner circle is, the welding of excircle is continued to be carried out by the dismounting and mounting welding device, so that the manual auxiliary time of operation is too long, the welding efficiency is low, and the welding quality is difficult to guarantee.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to solve the technical problems that: the improvement of the hardware structure of the large-sized cylinder inner and outer circle submerged arc welding system is provided.
In order to solve the technical problems, the invention adopts the technical scheme that: the large-sized cylinder inner and outer circle submerged arc welding system comprises a guide rail and circular rollers arranged at two ends of the guide rail in parallel, wherein the circular rollers are controlled and driven by a driving motor;
the guide rail is also provided with a movable trolley, the movable trolley is provided with an arc welding device and a vehicle-mounted control cabinet, and the movable trolley is controlled and driven by a walking motor arranged on a trolley bottom plate;
the arc welding device is internally provided with a pair of lifting stand columns, a submerged arc welding machine mounting arm and a submerged arc welding machine, the lifting stand columns are lifting stand columns vertically arranged on a moving trolley, a lifting screw rod is further arranged between the two lifting stand columns, a lifting motor is arranged at the top of each lifting stand column, and a rotating shaft of the lifting motor is in transmission connection with the lifting screw rod through a coupling;
the lifting upright post is also provided with a lifting upright post guide rail, one side of the lifting upright post is also provided with an operation control box, and the front surface of the operation control box is also provided with an HMI touch screen;
the mounting arm of the submerged arc welding machine is fixed on the lifting upright post through a lifting connector, the lifting connector is mounted on a lifting screw rod, the extending end of the mounting arm of the submerged arc welding machine is provided with the submerged arc welding machine, and one side of the submerged arc welding machine is also provided with a camera;
a ground control cabinet is further arranged on one side of the guide rail, and a camera display screen and a control panel are arranged on the front face of the ground control cabinet;
and a cable sliding frame is also arranged above the guide rail.
The number of the circular rollers is four, the four circular rollers are controlled and driven by a driving motor M1, a driving motor M2, a driving motor M3 and a driving motor M4 respectively, and control ends of the driving motor M1, the driving motor M2, the driving motor M3 and the driving motor M4 are connected with an output end of a frequency converter X2 through conducting wires;
the moving trolley is controlled and driven by a walking motor M5;
the lifting screw rod is controlled and driven through a lifting motor M6.
A starting switch SB1 and an emergency stop switch SB2 are arranged on a control panel of the ground control cabinet;
a round roller variable frequency motor control loop is arranged in the ground control cabinet, a controller X1 is arranged in the round roller variable frequency motor control loop, a PID port of the controller X1 is connected with a frequency converter X2 through a lead, a signal output end of the controller X1 is respectively connected with relay coils KM1-KM9, and linkage contacts of the relay coils KM1-KM9 are respectively normally open contacts KM1.1-KM 9.1;
the power input end of circle roller frequency conversion motor control circuit is provided with protection switch QL0, protection switch QL1, phase sequence protector KA0, relay coil KM0, phase sequence protector KA 0's linkage contact is normally closed contact KA0.1, relay coil KM 0's linkage contact is normally open contact KM0.1, the power supply circuit structure of circle roller frequency conversion motor control circuit is:
the starting switch SB1 is connected with the emergency stop switch SB2 to form a starting switch, the wire inlet end of the starting switch is connected with the wire inlet end of the normally open contact KM0.1, the wire outlet end of the starting switch is connected with the input end of the relay coil KM0 after being connected with the normally closed contact KA0.1 in series, and the wire outlet end of the normally open contact KM0.1 is connected with the power supply input end of the frequency converter X2 after being connected with the protection switch QL1 and the normally open contact KM1.1 in series; and the outlet end of the normally open contact KM0.1 is also connected with the input end of a 24V rectifier.
The circuit structure of the control loop of the round roller variable frequency motor is as follows:
the output end of the frequency converter X2 is sequentially connected with the wire inlet end of the normally open contact KM2.1, the wire inlet end of the normally open contact KM3.1 and the wire inlet end of the normally open contact KM4.1 in parallel and then connected with the wire inlet end of the normally open contact KM 5.1;
the outlet end of the normally open contact KM2.1 is connected with the power supply inlet end of the driving motor M1 after being connected with the thermal relay FR1 in series;
the outlet end of the normally open contact KM3.1 is connected with the power supply inlet end of the driving motor M2 after being connected with the thermal relay FR2 in series;
the outlet end of the normally open contact KM4.1 is connected with the power supply inlet end of the driving motor M3 after being connected with the thermal relay FR3 in series;
and the outlet end of the normally open contact KM5.1 is connected with the power supply inlet end of the driving motor M4 after being connected with the thermal relay FR4 in series.
The power supply input end of the walking motor M5 control loop is connected with the wire outlet end of a normally open contact KM0.1, the normally open contact KM6.1 is arranged on the forward rotation control loop of the walking motor M5, and the normally open contact KM7.1 is arranged on the reverse rotation control loop of the walking motor M5;
the power supply input end of the lifting motor M6 control loop is connected with the wire outlet end of a normally open contact KM0.1, the normally open contact KM8.1 is arranged on the forward rotation control loop of the lifting motor M6, and the normally open contact KM9.1 is arranged on the reverse rotation control loop of the lifting motor M6;
a control loop of the walking motor M5 is also provided with a thermal relay FR 5;
and a control loop of the lifting motor M6 is also provided with a thermal relay FR 6.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the movable trolley which can horizontally move is arranged on the guide rail, and the lifting submerged arc welding device is arranged on the movable trolley, so that the welding of the inner arc and the outer arc of the cylinder can be completed without replacing welding equipment during the inner arc and the outer arc of the cylinder during the welding of the inner arc and the outer arc of the cylinder, the camera is arranged at the submerged arc welding machine, and the camera display screen is arranged on the ground control cabinet, so that an operator can conveniently observe the whole welding operation process in real time, the remote monitoring operation is realized, the welding efficiency and the welding quality are improved, and the working intensity of the operator is reduced.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the lifting part of the submerged arc welding machine of the present invention;
FIG. 3 is a schematic diagram illustrating the moving position of the welding device during the inner circle welding according to the embodiment of the present invention;
FIG. 4 is a schematic view of a submerged arc welding machine moving to an operation point during inner circle welding according to an embodiment of the present invention;
FIG. 5 is a schematic view of the welding device lifting during the outer circle welding of the embodiment of the invention;
FIG. 6 is a schematic view of a butt weld of a welding device during outer circle welding according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a control circuit according to the present invention;
FIG. 8 is a schematic diagram of a motor driving circuit according to the present invention;
in the figure: the device comprises a guide rail 1, a round roller 2, a moving trolley 3, an arc welding device 4, a vehicle-mounted control cabinet 5, a lifting upright post 6, a submerged arc welding machine mounting arm 7, a submerged arc welding machine 8, a lifting screw rod 9, a coupler 10, a lifting upright post guide rail 11, an operation control box 12, a lifting connector 13, a camera 14, a ground control cabinet 15, a camera display screen 16 and a cable sliding frame 17.
Detailed Description
As shown in fig. 1 to 8, the large cylinder inner and outer circle submerged arc welding system comprises a guide rail 1 and circular rollers 2 arranged at two ends of the guide rail 1 in parallel, wherein the circular rollers 2 are controlled and driven by a driving motor;
the guide rail 1 is also provided with a movable trolley 3, the movable trolley 3 is provided with an arc welding device 4 and a vehicle-mounted control cabinet 5, and the movable trolley 3 is controlled and driven by a walking motor arranged on a trolley bottom plate;
the arc welding device 4 is internally provided with a pair of lifting upright posts 6, a submerged arc welding machine mounting arm 7 and a submerged arc welding machine 8, the lifting upright posts 6 are lifting upright posts vertically arranged on the moving trolley 3, a lifting screw rod 9 is further arranged between the two lifting upright posts 6, a lifting motor is arranged at the top of each lifting upright post 6, and a rotating shaft of the lifting motor is in transmission connection with the lifting screw rod 9 through a coupling 10;
a lifting upright guide rail 11 is further arranged on the lifting upright 6, an operation control box 12 is further arranged on one side of the lifting upright 6, and an HMI touch screen is further arranged on the front surface of the operation control box 12;
the submerged arc welding machine mounting arm 7 is fixed on the lifting upright post 6 through a lifting connector 13, the lifting connector 13 is mounted on a lifting screw rod 9, a submerged arc welding machine 8 is arranged at the extending end of the submerged arc welding machine mounting arm 7, and a camera 14 is further arranged on one side of the submerged arc welding machine 8;
a ground control cabinet 15 is further arranged on one side of the guide rail 1, and a camera display screen 16 and a control panel are arranged on the front face of the ground control cabinet 15;
a cable sliding frame 17 is also arranged above the guide rail 1.
The number of the circular rollers 2 is four, the four circular rollers 2 are controlled and driven by a driving motor M1, a driving motor M2, a driving motor M3 and a driving motor M4 respectively, and control ends of the driving motor M1, the driving motor M2, the driving motor M3 and the driving motor M4 are connected with an output end of a frequency converter X2 through leads;
the moving trolley 3 is controlled and driven by a walking motor M5;
the lifting screw rod 9 is controlled and driven by a lifting motor M6.
A starting switch SB1 and an emergency stop switch SB2 are arranged on a control panel of the ground control cabinet 15;
a round roller variable frequency motor control loop is arranged in the ground control cabinet 15, a controller X1 is arranged in the round roller variable frequency motor control loop, a PID port of the controller X1 is connected with a frequency converter X2 through a lead, a signal output end of the controller X1 is respectively connected with relay coils KM1-KM9, and linkage contacts of the relay coils KM1-KM9 are respectively normally open contacts KM1.1-KM 9.1;
the power input end of circle roller frequency conversion motor control circuit is provided with protection switch QL0, protection switch QL1, phase sequence protector KA0, relay coil KM0, phase sequence protector KA 0's linkage contact is normally closed contact KA0.1, relay coil KM 0's linkage contact is normally open contact KM0.1, the power supply circuit structure of circle roller frequency conversion motor control circuit is:
the starting switch SB1 is connected with the emergency stop switch SB2 to form a starting switch, the wire inlet end of the starting switch is connected with the wire inlet end of the normally open contact KM0.1, the wire outlet end of the starting switch is connected with the input end of the relay coil KM0 after being connected with the normally closed contact KA0.1 in series, and the wire outlet end of the normally open contact KM0.1 is connected with the power supply input end of the frequency converter X2 after being connected with the protection switch QL1 and the normally open contact KM1.1 in series; and the outlet end of the normally open contact KM0.1 is also connected with the input end of a 24V rectifier.
The circuit structure of the control loop of the round roller variable frequency motor is as follows:
the output end of the frequency converter X2 is sequentially connected with the wire inlet end of the normally open contact KM2.1, the wire inlet end of the normally open contact KM3.1 and the wire inlet end of the normally open contact KM4.1 in parallel and then connected with the wire inlet end of the normally open contact KM 5.1;
the outlet end of the normally open contact KM2.1 is connected with the power supply inlet end of the driving motor M1 after being connected with the thermal relay FR1 in series;
the outlet end of the normally open contact KM3.1 is connected with the power supply inlet end of the driving motor M2 after being connected with the thermal relay FR2 in series;
the outlet end of the normally open contact KM4.1 is connected with the power supply inlet end of the driving motor M3 after being connected with the thermal relay FR3 in series;
and the outlet end of the normally open contact KM5.1 is connected with the power supply inlet end of the driving motor M4 after being connected with the thermal relay FR4 in series.
The power supply input end of the walking motor M5 control loop is connected with the wire outlet end of a normally open contact KM0.1, the normally open contact KM6.1 is arranged on the forward rotation control loop of the walking motor M5, and the normally open contact KM7.1 is arranged on the reverse rotation control loop of the walking motor M5;
the power supply input end of the lifting motor M6 control loop is connected with the wire outlet end of a normally open contact KM0.1, the normally open contact KM8.1 is arranged on the forward rotation control loop of the lifting motor M6, and the normally open contact KM9.1 is arranged on the reverse rotation control loop of the lifting motor M6;
a control loop of the walking motor M5 is also provided with a thermal relay FR 5;
and a control loop of the lifting motor M6 is also provided with a thermal relay FR 6.
The arc welding device is fixed by the movable trolley arranged on the guide rail, and the movable trolley drives and controls the movable trolley to move back and forth on the guide rail through the walking motor M5 which is arranged above the front-end wheels and fixed on the bottom plate of the movable trolley; the arc welding device is provided with a lifting device, the automatic submerged arc welding machine is installed on the lifting device, the lifting device is placed and installed through lifting upright columns which are fixed on a bottom plate of the moving trolley side by side, a lifting motor M6 is installed at the top ends of the lifting upright columns through a top plate, a lifting lead screw is installed between the two lifting upright columns, and the lifting lead screw is connected with a lifting motor M6 through a coupler which is installed below the top plate of the lifting upright columns; lifting upright guide rails are further arranged on the lifting uprights, lifting connectors are mounted on the two lifting uprights, the two lifting uprights are connected with a mounting arm of the submerged arc welding machine through the lifting connectors, and the lifting connectors control the lifting direction through the lifting upright guide rails to enable the lifting connectors to slide up and down stably; the tail end of the extending end of the mounting arm of the submerged arc welding machine is fixedly provided with the submerged arc welding machine, the automatic submerged arc welding machine is mounted on the submerged arc welding machine, and one side of the submerged arc welding machine is further provided with a camera for collecting image data of an operation picture of the welding machine.
A vehicle-mounted control cabinet is also arranged on one side of the arc welding device on the bottom plate of the moving trolley and is used for installing and connecting low-voltage control elements of the walking motor M5 and the lifting motor M6 with a power supply low-voltage control element of the automatic submerged arc welding machine; an operation control box is further arranged on one side below the lifting upright post, and a control button and an HMI touch screen are arranged on the surface of the operation control box; two rows of parallel round rollers are arranged at two ends of the guide rail, and the motor speed control is realized through a frequency converter by a driving motor M1, a driving motor M2, a driving motor M3 and a driving motor M4 respectively, the driving motor M1, the driving motor M2, the driving motor M3 and the driving motor M4, so that the round rollers rotate to drive the cylinder to rotate; a ground control cabinet is also arranged on one side of the guide rail and used for the variable frequency control of the round roller, and a camera display screen is also arranged on the surface of the ground control cabinet and used for displaying the operation state of the cylinder during the inner and outer circular arc welding in real time; and a cable sliding frame is arranged above one side of the guide rail and used for arranging and placing the wiring cables of the ground control cabinet and the vehicle-mounted control cabinet.
The HMI touch screen is provided with upper computer software for controlling the starting and stopping of the walking motor M5 and the lifting motor M6, and the starting and stopping of the driving motor M1, the driving motor M2, the driving motor M3 and the driving motor M4 and the setting of the rotating speed of the motors; before the inner and outer circular arc welding operation of the cylinder is carried out, an operator controls a lifting motor M6 to complete the adjustment of the upper and lower positions of the automatic submerged arc welding machine through an HMI touch screen arranged on an operation control box, and controls the position of a moving trolley through a control walking motor M5 to realize the adjustment of the front and rear positions of the automatic submerged arc welding machine; the cylinder is driven by a round roller, the round roller controls the rotating speed of a driving motor M1 to a driving motor M4 through a frequency converter so as to realize the rotation of the round roller, the rotating speed of the round roller is set by an operator according to the size and the thickness of a welding workpiece through upper computer software installed on an HMI touch screen, the rotating speed of the driving motor M1 to the rotating speed of the driving motor M4 is set, and the rotating speed of the motor is controlled through the frequency converter; through installing the display screen that makes a video recording at ground switch board, the welding position operation condition that will install the camera shooting at welding position shows in real time.
Fig. 3 is a schematic diagram of the moving position of the welding device during inner circle welding, according to fig. 3, when the inner circle of the cylinder is welded, firstly two cylinder sections which need to be subjected to welding seam butt welding operation are placed on the circular rollers, and the two parallel rows of circular rollers are arranged, wherein the centering distance can be adjusted according to the diameter of the cylinder sections; after the position of the butt-joint welding line is adjusted, equipment needs to be powered on, after the equipment is powered on, upper computer software is started, motor operation parameters are set, an operator starts a walking motor M5 through an HMI touch screen to control the moving trolley to move, so that the whole welding device is driven to move to the butt-joint position of the welding lines of the two cylinder sections, and then the walking motor M5 is controlled to stop through the HMI touch screen; after the movement of the welding seam position in FIG. 3 is completed, as shown in FIG. 4, an operator starts a lifting motor M6 through an HMI touch screen to control the operation of the lifting motor, a lifting screw rod drives a mounting arm of a submerged arc welding machine to descend to a butt welding seam, then the lifting motor is stopped, a welding head discharge port of the automatic submerged arc welding machine is adjusted to be aligned with the welding seam, the operator inputs the rotation speed of a cylinder section through the HMI touch screen, controls a circular roller driving motor M1 to a driving motor M4 to operate, drives two cylinder sections to rotate in the same direction and at the same speed through a circular roller wheel, observes whether the cylinder sections operate stably and whether the welding seam has the conditions of side-to-side movement and vertical shaking, performs position adjustment on the cylinder sections again if the conditions exist, sets the welding voltage and current of the automatic submerged arc welding machine according to process requirements after the cylinder sections rotate stably, starts the automatic submerged arc welding machine to weld the welding seam, the operator leaves the welding operation face and observes the welding condition through the camera display screen.
According to the welding process, after the welding of the inner arc is finished, the welding device is used for welding the outer arc of the cylinder section butt welding line, the lifting schematic diagram of the welding device during the outer arc welding is shown in fig. 5, after the welding operation of the inner arc butt welding line is finished, an operator starts a lifting motor M6 through an HMI touch screen to control the operation of the lifting motor, a lifting lead screw drives a mounting arm of a submerged arc welding machine to ascend to the center position of the cylinder section, and then the lifting motor is controlled to stop; an operator starts a walking motor M5 through an HMI touch screen to control the moving trolley to move and drive the whole welding device to move to an initial position to be separated from a welding cylinder section, the operator starts a lifting motor M6 through the HMI touch screen to control the lifting motor to operate, and a lifting screw rod drives a submerged arc welding machine mounting arm to rise to a position higher than the top of the cylinder section and then stops the operation of the lifting motor; after the position of the welding device is adjusted in place, as shown in fig. 6, which is a schematic diagram of a butt-joint weld of the welding device during excircle welding, an operator starts a walking motor M5 through an HMI touch screen to control a moving trolley to move forward, drives the whole welding device to move to the position of the excircle weld, then sets the welding voltage and current of an automatic submerged arc welding machine according to process requirements, and starts the automatic submerged arc welding machine to perform excircle weld welding operation; an operator inputs the rotating speed of the cylinder sections through an HMI touch screen to control the operation of the circular roller driving motor M1 to the driving motor M4, the circular roller driving motor M1 to the driving motor M4 drive the two cylinder sections to rotate in the same direction and at the same speed through a circular roller wheel, at the moment, the operator leaves a welding operation surface, and the welding condition is observed through a camera display screen.
After the welding operation of the inner circular arc welding seam and the outer circular arc welding seam of the cylinder is finished, the mobile trolley and the welding device are adjusted to the original positions through the control of the walking motor M5 and the lifting motor M6 through the HMI touch screen, then the software of the upper computer is closed, and the power supply of the equipment is closed to wait for the next welding operation and then is started.
A control circuit is arranged in the ground control cabinet, and a protection switch QL0 is arranged at an external power supply inlet end of the control circuit to protect the power supply from overload and short-circuit faults; the phase sequence protector KA0 is arranged at the external power supply inlet end of the control circuit, so that the phase loss and phase sequence protection can be performed on the power supply, the rotating direction of the motor is ensured to be consistent with the requirement, and the running fault or damage of the motor caused by the phase loss fault is avoided; the surface of the ground control cabinet is provided with a control panel, the control panel is provided with a starting switch SB1 and an emergency stop switch SB2, the starting switch SB1 is used for starting and stopping a system power supply of the welding device, the starting switch SB1 is closed, a relay coil KM0 is electrified, a normally open contact KM0.1 is closed, and the system is electrified; the emergency stop switch SB2 can be used for switching off the SB1 when the system is in an emergency state or has a fault, so as to realize the system power-off; the DC24V power supply provides power to the controller X1.
The controller X1 is connected with the KMI touch screen through an RS232 port, and the action control of the motor of the welding device is completed through upper computer software installed on the HMI touch screen; the controller X1 is connected with the frequency converter X2 through a PID port, so that the speed control of the output motor of the frequency converter X2 is realized, the speed control from the circular roller driving motor M1 to the driving motor M4, namely the rotation speed control of the circular roller is realized, the rotation speed of a cylinder section is controlled, and the control of the welding speed is realized; the HMI touch screen controls the states of the relay coil KM6 to the relay coil KM9 through a controller X1 through a function button arranged on the upper computer software, thereby realizing the actions of attracting and disconnecting the contact of the relay, realizing the positive and negative rotation of the walking motor M5 and the lifting motor M6, further realizing the function of horizontally moving the moving trolley on the guide rail to advance or retreat, and controlling the action of ascending or descending the lifting connector on the lifting upright post.
The controller X1 controls the states of the relay coil KM2 to the relay coil KM5 through a port 4 to a port 7 respectively, so that the synchronous motor control of the driving motor M1 to the driving motor M4 is achieved by controlling the closing of the corresponding normally open contact KM2.1 to the normally open contact KM 5.1; the controller X1 controls the states of the relay coil KM6 to the relay coil KM9 through a port 21 to a port 24 respectively, so that the forward and reverse rotation of the walking motor M5 and the lifting motor M6 are controlled, specifically, the forward rotation of the walking motor M5 is controlled by controlling the closing of a normally open contact KM6.1, so that the moving trolley moves forward on the guide rail, the closing of the normally open contact KM7.1 is controlled, and the reverse rotation of the walking motor M5 is realized so that the moving trolley moves backward on the guide rail; the normally open contact KM8.1 is controlled to be closed, the lifting connector is lifted up by forward rotation of the lifting motor M6, the normally open contact KM9.1 is controlled to be closed, and the lifting connector is lowered by reverse rotation of the lifting motor M6.
The invention adopts a large cylinder inner and outer circle submerged arc welding device, and applies the advantages of stable welding quality, high welding production efficiency, no arc light and less smoke dust of an automatic submerged arc welding machine to complete the welding processing of the inner and outer butt welding seams of large circular pipelines and circular pressure vessels; the camera monitoring technology is adopted, so that remote welding operation monitoring is realized; the digital control of the rotating speed of the cylinder is realized through a controller X1, an HMI touch screen and a frequency converter; the automatic submerged arc welding device with the horizontal moving and lifting functions can complete one-time clamping without changing equipment, so that the function of welding inner and outer circular welding seams is realized; not only improves the production, but also reduces the labor intensity of operators and improves the equipment safety.
The control motors used by the invention are all the existing modules, and specifically comprise the following modules:
the model number of the driving motor M1-M4 is 110FH 100-05;
the model of the walking motor M5 and the model of the lifting motor M6 are NKLA 22-S.
It should be noted that, regarding the specific structure of the present invention, the connection relationship between the modules adopted in the present invention is determined and can be realized, except for the specific description in the embodiment, the specific connection relationship can bring the corresponding technical effect, and the technical problem proposed by the present invention is solved on the premise of not depending on the execution of the corresponding software program.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (5)

1. Large-scale cylinder inner and outer circle submerged arc welding system, including guide rail (1) and set up in round roller (2) at guide rail (1) both ends side by side, its characterized in that: the round roller (2) is controlled and driven by a driving motor;
the guide rail (1) is also provided with a movable trolley (3), the movable trolley (3) is provided with an arc welding device (4) and a vehicle-mounted control cabinet (5), and the movable trolley (3) is controlled and driven by a walking motor arranged on a trolley bottom plate;
the arc welding device (4) is internally provided with a pair of lifting columns (6), a submerged arc welding machine mounting arm (7) and a submerged arc welding machine (8), the lifting columns (6) are specifically lifting columns vertically arranged on the mobile trolley (3), a lifting screw rod (9) is further arranged between the two lifting columns (6), a lifting motor is arranged at the top of each lifting column (6), and a rotating shaft of the lifting motor is in transmission connection with the lifting screw rod (9) through a coupling (10);
a lifting upright guide rail (11) is further arranged on the lifting upright (6), an operation control box (12) is further arranged on one side of the lifting upright (6), and an HMI touch screen is further arranged on the front surface of the operation control box (12);
the submerged arc welding machine mounting arm (7) is fixed on the lifting upright post (6) through a lifting connector (13), the lifting connector (13) is mounted on a lifting screw rod (9), a submerged arc welding machine (8) is arranged at the extending end of the submerged arc welding machine mounting arm (7), and a camera (14) is further arranged on one side of the submerged arc welding machine (8);
a ground control cabinet (15) is further arranged on one side of the guide rail (1), and a camera display screen (16) and a control panel are arranged on the front surface of the ground control cabinet (15);
and a cable sliding frame (17) is also arranged above the guide rail (1).
2. The large cylinder inside and outside submerged arc welding system of claim 1, wherein: the number of the circular rollers (2) is four, the four circular rollers (2) are controlled and driven by a driving motor M1, a driving motor M2, a driving motor M3 and a driving motor M4 respectively, and control ends of the driving motor M1, the driving motor M2, the driving motor M3 and the driving motor M4 are connected with an output end of a frequency converter X2 through leads;
the moving trolley (3) is controlled and driven by a walking motor M5;
the lifting screw rod (9) is controlled and driven through a lifting motor M6.
3. The large cylinder inside and outside submerged arc welding system of claim 2, wherein: a control panel of the ground control cabinet (15) is provided with a starting switch SB1 and an emergency stop switch SB 2;
a round roller variable frequency motor control loop is arranged in the ground control cabinet (15), a controller X1 is arranged in the round roller variable frequency motor control loop, a PID port of the controller X1 is connected with a frequency converter X2 through a lead, a signal output end of the controller X1 is respectively connected with relay coils KM1-KM9, and linkage contacts of the relay coils KM1-KM9 are respectively normally open contacts KM1.1-KM 9.1;
the power input end of circle roller frequency conversion motor control circuit is provided with protection switch QL0, protection switch QL1, phase sequence protector KA0, relay coil KM0, phase sequence protector KA 0's linkage contact is normally closed contact KA0.1, relay coil KM 0's linkage contact is normally open contact KM0.1, the power supply circuit structure of circle roller frequency conversion motor control circuit is:
the starting switch SB1 is connected with the emergency stop switch SB2 to form a starting switch, the wire inlet end of the starting switch is connected with the wire inlet end of the normally open contact KM0.1, the wire outlet end of the starting switch is connected with the input end of the relay coil KM0 after being connected with the normally closed contact KA0.1 in series, and the wire outlet end of the normally open contact KM0.1 is connected with the power supply input end of the frequency converter X2 after being connected with the protection switch QL1 and the normally open contact KM1.1 in series; and the outlet end of the normally open contact KM0.1 is also connected with the input end of a 24V rectifier.
4. A large cylinder inside-outside submerged arc welding system according to claim 3, characterized in that: the circuit structure of the control loop of the round roller variable frequency motor is as follows:
the output end of the frequency converter X2 is sequentially connected with the wire inlet end of the normally open contact KM2.1, the wire inlet end of the normally open contact KM3.1 and the wire inlet end of the normally open contact KM4.1 in parallel and then connected with the wire inlet end of the normally open contact KM 5.1;
the outlet end of the normally open contact KM2.1 is connected with the power supply inlet end of the driving motor M1 after being connected with the thermal relay FR1 in series;
the outlet end of the normally open contact KM3.1 is connected with the power supply inlet end of the driving motor M2 after being connected with the thermal relay FR2 in series;
the outlet end of the normally open contact KM4.1 is connected with the power supply inlet end of the driving motor M3 after being connected with the thermal relay FR3 in series;
and the outlet end of the normally open contact KM5.1 is connected with the power supply inlet end of the driving motor M4 after being connected with the thermal relay FR4 in series.
5. The large cylinder inside and outside submerged arc welding system of claim 4, wherein: the power supply input end of the walking motor M5 control loop is connected with the wire outlet end of a normally open contact KM0.1, the normally open contact KM6.1 is arranged on the forward rotation control loop of the walking motor M5, and the normally open contact KM7.1 is arranged on the reverse rotation control loop of the walking motor M5;
the power supply input end of the lifting motor M6 control loop is connected with the wire outlet end of a normally open contact KM0.1, the normally open contact KM8.1 is arranged on the forward rotation control loop of the lifting motor M6, and the normally open contact KM9.1 is arranged on the reverse rotation control loop of the lifting motor M6;
a control loop of the walking motor M5 is also provided with a thermal relay FR 5;
and a control loop of the lifting motor M6 is also provided with a thermal relay FR 6.
CN202010408419.6A 2020-05-14 2020-05-14 Large-scale cylinder inner and outer circle submerged arc welding system Pending CN111558766A (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114713986A (en) * 2022-06-08 2022-07-08 中铁城建集团第一工程有限公司 Automatic welding equipment in steel pipe
CN114799602A (en) * 2022-06-01 2022-07-29 山东天厚石油科技有限责任公司 Welding equipment and process for tungsten-plated oil pipe
WO2023061143A1 (en) * 2021-10-13 2023-04-20 中国化学工程第六建设有限公司 Automatic submerged arc welding trolley for small-diameter welding
CN116329828A (en) * 2023-05-25 2023-06-27 南京斯迈柯特种金属装备股份有限公司 Pressure container butt joint groove structure, welding device and welding method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023061143A1 (en) * 2021-10-13 2023-04-20 中国化学工程第六建设有限公司 Automatic submerged arc welding trolley for small-diameter welding
CN114799602A (en) * 2022-06-01 2022-07-29 山东天厚石油科技有限责任公司 Welding equipment and process for tungsten-plated oil pipe
CN114713986A (en) * 2022-06-08 2022-07-08 中铁城建集团第一工程有限公司 Automatic welding equipment in steel pipe
CN116329828A (en) * 2023-05-25 2023-06-27 南京斯迈柯特种金属装备股份有限公司 Pressure container butt joint groove structure, welding device and welding method
CN116329828B (en) * 2023-05-25 2024-02-06 南京斯迈柯特种金属装备股份有限公司 Pressure container butt joint groove structure, welding device and welding method

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