阅读说明：本技术 一种便携式软轨道摇摆埋弧焊装置及焊接方法 (Portable soft track swinging submerged arc welding device and welding method ) 是由 李涛涛 马宇杰 郑先波 张胜 徐静 宋雪峰 沈纪荣 王先进 于 2021-08-26 设计创作，主要内容包括：本发明提供一种便携式软轨道摇摆埋弧焊装置及焊接方法,包括小车本体、和电源箱,所述便携式软轨道摇摆埋弧焊装置还包括设置在小车本体下方侧的软轨、安装在小车本体上的夹持装置、以及导电嘴,所述夹持装置包括安装在小车本体上的位置调节器、以及安装在位置调节器上的摆动器,所述导电嘴安装在摆动器上、且导电嘴中穿有焊丝,所述电源箱与导电嘴、焊丝、待焊接板之间构成焊接回路；所述小车本体上还设置有料斗,所述料斗内放置有焊剂。本发明设置有软轨,对待焊接板的直线度要求大大降低,提高了焊接装置的灵活性；设置有摆动器,电弧能够随摆动器进行摆动,扩大了单道焊缝宽度,降低了待焊接板的装配精度以及坡口间隙要求,适用范围广泛。(The invention provides a portable soft track swinging submerged arc welding device and a welding method, the portable soft track swinging submerged arc welding device comprises a trolley body and a power supply box, the portable soft track swinging submerged arc welding device also comprises a soft track arranged on the lower side of the trolley body, a clamping device arranged on the trolley body and a conductive nozzle, the clamping device comprises a position regulator arranged on the trolley body and a swinging device arranged on the position regulator, the conductive nozzle is arranged on the swinging device, a welding wire penetrates through the conductive nozzle, and a welding loop is formed among the power supply box, the conductive nozzle, the welding wire and a plate to be welded; the trolley body is further provided with a hopper, and welding flux is placed in the hopper. The flexible rail is arranged, so that the requirement on the straightness of a plate to be welded is greatly reduced, and the flexibility of the welding device is improved; the oscillator is arranged, the electric arc can swing along with the oscillator, the width of a single welding line is enlarged, the assembly precision of the plate to be welded and the requirement of the groove gap are reduced, and the application range is wide.)

1. The utility model provides a portable soft track sways submerged arc welding device, includes dolly body (1) and power supply box (14), its characterized in that: the portable soft track swinging submerged arc welding device further comprises a soft track (4) arranged on the lower side of the trolley body (1), a clamping device arranged on the trolley body (1) and a contact nozzle (10), wherein the clamping device comprises a position regulator arranged on the trolley body (1) and a swinging device (2) arranged on the position regulator, the contact nozzle (10) is arranged on the swinging device (2), a welding wire penetrates through the contact nozzle (10), and a welding loop is formed among the power supply box (14), the contact nozzle (10), the welding wire and a plate to be welded (11); the trolley is characterized in that a hopper (3) is further arranged on the trolley body (1), and welding flux (12) is placed in the hopper (3).

2. The portable soft track rocking submerged arc welding apparatus of claim 1, wherein: the position regulator comprises a first regulating device (5) arranged on the trolley body (1) and a second regulating device (6) arranged on the first regulating device (5); the first adjusting device (5) comprises a first screw rod (502) rotatably mounted in the trolley body (1), a first sliding block (501) connected to the first screw rod (502) in a sliding mode, and a first hand wheel (503) fixed to the end portion of the first screw rod (502), and the second adjusting device (6) comprises a second screw rod (602) rotatably mounted in the first sliding block (501), a second sliding block (601) connected to the second screw rod (602) in a sliding mode, and a second hand wheel (603) fixed to the end portion of the second screw rod (602); the oscillator (2) is mounted on the second slider (601).

3. The portable soft orbital swing submerged arc welding apparatus of claim 2 wherein: the extending direction of the first screw (502) is perpendicular to the extending direction of the flexible rail (4), the extending direction of the second screw (602) is parallel to the extending direction of the flexible rail (4), the first screw (502) is rotatably connected with the trolley body (1) through a bearing, and the second screw (602) is rotatably connected with the first sliding block (501) through a bearing.

4. The portable soft track rocking submerged arc welding apparatus of claim 1, wherein: the trolley is characterized in that the trolley body (1) is further provided with a control panel (7) and a storage battery (8) connected with the control panel (7), and the control panel (7) is in communication connection with the oscillator (2) and a walking driving source of the trolley body (1).

5. The portable soft orbital swing submerged arc welding apparatus of claim 4 wherein: the remote control device is characterized by further comprising a remote controller (13), and the control panel (7) is in communication connection with the remote controller (13).

6. The portable soft track rocking submerged arc welding apparatus of claim 1, wherein: the portable soft track swinging submerged arc welding device further comprises a wire feeding mechanism (9), the wire feeding mechanism (9) is in cable connection with the power box (14) through an output cable, and the wire feeding mechanism (9) supplies welding wires to the power supply nozzle (10).

7. The portable soft track rocking submerged arc welding apparatus of claim 1, wherein: the cross-sectional area of the hopper (3) is gradually reduced from top to bottom, and a discharge hole is formed in the bottom of the hopper (3).

8. A welding method of a portable soft orbital swing submerged arc welding device according to claim 1, characterized in that: the method comprises the following steps:

s1, connecting the contact tip (10) with a power box (14) through a cable, and penetrating a welding wire into the contact tip (10);

s2, laying the soft rail (4) on the plate (11) to be welded, and installing the trolley body (1) on the soft rail (4);

s3, aligning the welding wire penetrating out of the end face of the contact tip (10) with the center of the welding seam of the plate (11) to be welded through a position regulator on the clamping device;

s4, uniformly covering the flux (12) on the welding seam of the plate (11) to be welded through the discharge hole of the hopper (3);

s5, sequentially setting working parameters of the oscillator (2), walking parameters of the trolley body (1) and power supply parameters of the power box (14);

s6, opening a power supply box (14), the oscillator (2) and a driving device of the trolley body (1), and forming a welding loop among the power supply box (14), the contact tip (10), the welding wire and the board to be welded (11); an electric arc generated by a welding loop is burnt between a welding wire and a plate (11) to be welded to melt a base material and a flux (12) at the end of the welding wire and in the vicinity of the electric arc, the molten base material forms a molten pool, and the molten flux (12) becomes slag; along with the walking of the trolley body (1) and the swinging of the swinging device (2), liquid metal in the molten pool is pushed to the rear of the molten pool, after cooling, the liquid metal is partially solidified into a welding line, and slag is cooled and solidified into a slag shell to cover the surface of the welding line, so that the welding of a plate (11) to be welded is completed.

Technical Field

The invention relates to the technical field of steel welding, in particular to a portable flexible rail swinging submerged arc welding device and a welding method.

Background

The submerged arc automatic welding is a high-efficiency welding method using electric arc as heat source, when submerged arc welding, the electric arc is covered by a layer of granular fusible flux and burnt, the electric arc is not exposed, the metal electrode continuously feeds welding wire, its production efficiency is 5-10 times that of shielded metal arc welding, its main advantages are as follows:

a) the large-current welding can be realized, the deposition efficiency is improved, the steel plate with the plate thickness less than 14mm can be welded without beveling, the auxiliary working hours of beveling and the like are saved, and the productivity is improved;

b) the welding seam has good quality, the welding arc is protected by thick welding flux and slag, the harmful immersion of oxygen and nitrogen in the air to the arc is avoided, the wire is fed mechanically, the automatic arc adjusting function is realized, the welding process parameters and quality are stable, and the appearance is smooth and attractive;

c) the welding wire and the electric energy are saved;

d) the labor intensity is improved;

e) and the welding deformation is small.

With the development of modern science and technology, the traditional welding mode cannot meet the development of modern shipbuilding, and the defects of submerged-arc welding at the present stage are that the submerged-arc welding only can be applied to a flat position welding seam, is poor in flexibility, can be applied to a flat position welding seam or a straight welding seam not larger than 8 degrees in butt joint, has higher requirements on assembly precision, a groove and straightness, is not suitable for narrow areas, is driven by a hard-rail four-wheel, has the quality of 60KG and is limited in application range.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention provides a portable soft orbital rocking submerged arc welding device, which is used for solving the problems of the prior art that submerged arc welding is only suitable for flat position welding, has poor flexibility and limited application range.

In order to achieve the above objects and other related objects, the present invention provides a portable soft track swinging submerged arc welding device, which comprises a trolley body, a power box, a soft track arranged on the lower side of the trolley body, a clamping device arranged on the trolley body, and a contact tip, wherein the clamping device comprises a position regulator arranged on the trolley body, and a swinger arranged on the position regulator, the contact tip is arranged on the swinger, a welding wire passes through the contact tip, and a welding loop is formed between the power box and the contact tip, the welding wire and a plate to be welded; the trolley body is further provided with a hopper, and welding flux is placed in the hopper.

Preferably, the position regulator comprises a first regulating device arranged on the trolley body and a second regulating device arranged on the first regulating device; the first adjusting device comprises a first screw rod which is rotatably arranged in the trolley body, a first sliding block which is connected to the first screw rod in a sliding mode, and a first hand wheel which is fixed to the end portion of the first screw rod, and the second adjusting device comprises a second screw rod which is rotatably arranged in the first sliding block, a second sliding block which is connected to the second screw rod in a sliding mode, and a second hand wheel which is fixed to the end portion of the second screw rod; the oscillator is mounted on the second slider.

Preferably, the extending direction of the first screw is perpendicular to the extending direction of the flexible rail, the extending direction of the second screw is parallel to the extending direction of the flexible rail, the first screw is rotatably connected with the trolley body through a bearing, and the second screw is rotatably connected with the first sliding block through a bearing.

Preferably, the trolley body is further provided with a control panel and a storage battery connected with the control panel, and the control panel is in communication connection with the oscillator and the walking driving source of the trolley body.

Preferably, the portable soft track swinging submerged arc welding device further comprises a remote controller, and the control panel is in communication connection with the remote controller.

Preferably, the portable soft track swinging submerged arc welding device further comprises a wire feeding mechanism, the wire feeding mechanism is electrically connected with the power box through an output cable, and the wire feeding mechanism supplies welding wires to the conducting nozzle.

Preferably, the cross-sectional area of the hopper is gradually reduced from top to bottom, and a discharge hole is formed in the bottom of the hopper.

Further, the invention further aims to provide a welding method of the portable soft track swing submerged arc welding device, which is used for solving the problems that submerged arc welding in the prior art is only suitable for flat position welding, has poor flexibility and is limited in application range.

To achieve the above and other related objects, a welding method of a portable soft track swinging submerged arc welding device comprises the following steps:

s1, electrically connecting the contact tip with a power box, and penetrating a welding wire into the contact tip;

s2, laying the soft rail on the plate to be welded, and mounting the trolley body on the soft rail;

s3, aligning the welding wire penetrating out of the end face of the contact tip with the center of the welding seam of the plate to be welded through the position regulator on the clamping device;

s4, uniformly covering the welding flux on the welding seam of the plate to be welded through the discharge hole of the hopper;

s5, sequentially setting working parameters of the oscillator, walking parameters of the trolley body and power supply parameters of the power box;

s6, opening a power box, a wiggler and a driving device of the trolley body, and forming a welding loop among the power box, the contact tip, the welding wire and the board to be welded; the electric arc generated by the welding loop is burnt between the welding wire and the plate to be welded to melt the base metal and the welding flux at the end of the welding wire and near the electric arc, the molten base metal forms a molten pool, and the molten welding flux becomes slag; along with the walking of the trolley body and the swinging of the oscillator, the liquid metal in the molten pool is pushed to the rear part of the molten pool, after cooling, the part of the liquid metal is solidified into a welding line, and the slag is cooled and solidified into a slag shell to cover the surface of the welding line, thereby completing the welding of the plate to be welded.

As mentioned above, the portable soft track swinging submerged arc welding device and the welding method have the following beneficial effects:

the flexible rail is arranged, so that the welding device can be suitable for welding seams with curved surfaces and large gradients (more than 30 degrees), the requirement on the straightness of a plate to be welded is greatly reduced, and the flexibility of the welding device is improved; the oscillator is arranged, the contact tip is arranged on the oscillator, the electric arc can swing along with the oscillator in the working process, the width of a single-channel welding line is enlarged, the assembling precision of a plate to be welded is reduced, the general groove gap meets the process requirement of 0-3 mm, and the application range is wide.

Drawings

FIG. 1 is a schematic structural view of a portable soft track swing submerged arc welding device of the present invention;

FIG. 2 is a front view of the portable flexible track swing submerged arc welding apparatus of the present invention;

FIG. 3 is a side view of the portable flexible track swing submerged arc welding apparatus of the present invention;

FIG. 4 is a top view of the portable flexible track swing submerged arc welding apparatus of the present invention;

FIG. 5 is a front view of the trolley body of the portable soft track swing submerged arc welding apparatus of the present invention;

FIG. 6 is a front view of the oscillator of the portable soft track oscillating submerged arc welding apparatus of the present invention;

FIG. 7 is a front view of the hopper of the portable soft track swing submerged arc welding apparatus of the present invention;

FIG. 8 is a front view of the flexible rail of the portable flexible rail swing submerged arc welding apparatus of the present invention;

FIG. 9 is a front view of a first adjustment mechanism of the portable soft track swing submerged arc welding apparatus of the present invention;

FIG. 10 is a front view of a second adjustment mechanism of the portable soft track swing submerged arc welding apparatus of the present invention;

FIG. 11 is a top view of the control panel of the portable soft track swing submerged arc welding apparatus of the present invention;

FIG. 12 is a top view of the batteries of the portable soft track rocking submerged arc welding apparatus of the present invention;

FIG. 13 is a front view of the wire feeder of the portable soft track swing submerged arc welding apparatus of the present invention;

FIG. 14 is a front view of a contact tip of the portable soft orbital swing submerged arc welding apparatus of the present invention;

FIG. 15 is a top view of a plate to be welded of the portable soft track swing submerged arc welding apparatus of the present invention;

FIG. 16 is a top view of the hopper of the portable soft track swing submerged arc welding apparatus of the present invention;

FIG. 17 is a front view of a remote control for the portable soft track rocking submerged arc welding apparatus of the present invention.

Description of the element reference numerals

1, a trolley body;

2, a wiggler;

3, a hopper;

4, a soft rail;

5 a first adjusting device;

501 a first slider;

502 a first screw;

503 a first handwheel;

6 a second adjusting device;

601 a second slide block;

602 a second screw;

603 a second hand wheel;

7 a control panel;

701 a walking speed knob;

702 starting and stopping a knob;

703 oscillating a midpoint knob;

704 a mode setting knob;

705 a swing amplitude knob;

706 swing speed knob;

707 swing a right stop knob;

708 swinging the left stop knob;

709 walking direction knob;

710 welding the knob;

8, a storage battery;

801 control panel socket;

an 802 charging outlet;

803 a wobbler slot;

9, a wire feeding mechanism;

10 a contact tip;

11 plates to be welded;

12, welding flux;

13 remote control;

1301 starting and stopping keys;

1302 a weld key;

1303 walking direction keys;

1304 swings the left stop key;

1305 swing the right stop key;

1306 walking speed key;

1307 swing speed key;

1308 a swing amplitude key;

1309 swing center key;

1310 delayed arc key;

1311 an indicator light;

14 power supply box.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

As shown in figure 1, the invention provides a portable soft track swinging submerged arc welding device, which is used for solving the problems that submerged arc welding in the prior art is only suitable for flat position welding, has poor flexibility and limited application range. For convenience of description, in the following examples, the directions are defined as follows: as shown in fig. 1, the longitudinal direction of the board to be welded 11 is defined as the left-right direction, the thickness direction of the board to be welded 11 is defined as the up-down direction, and the width direction of the board to be welded 11 is defined as the front-rear direction, so in fig. 4, the left side and the right side of the paper are the left direction and the right direction, respectively, the up direction and the down direction of the paper are the rear direction and the front direction, respectively, and the front side and the back side of the paper are the up direction and the down direction, respectively. As shown in fig. 1, the portable soft track swinging submerged arc welding device related to the present application comprises a trolley body 1, a power supply box 14, a soft track 4 arranged on the lower side of the trolley body 1, a clamping device installed on the front wall of the trolley body 1, and a contact tip 10, wherein the clamping device comprises a position regulator connected on the front wall of the trolley body 1 in a sliding manner, and a oscillator 2 installed on the position regulator, the contact tip 10 is installed at the end part of the oscillator 2, a welding wire penetrates through the contact tip 10, and a welding loop is formed between the power supply box 14 and the contact tip 10, the welding wire and a plate 11 to be welded; a hopper 3 is also arranged on the left end face of the trolley body 1, welding flux 12 is placed in the hopper 3, and the hopper 3 is parallel to the contact tube 10 in the vertical direction; further, the power box 14 uses a dc inverted main power supply.

Preferably, as shown in fig. 5, the carriage body 1 is an RL-KDYH welding carriage, and has the following dimensions: length, width, height 375, 300, 450mm, weight 19 KG; as shown in fig. 8, the flexible rail 4 is made of plastic material, has a single rail, has a rack structure, has a width of 40mm and a thickness of 35mm, and is detachably mounted on the plate to be welded 11 through strong magnetism; the welding wire is a submerged arc welding wire for high-strength steel with the diameter of phi 1.6mm and the type GWL-W14H; as shown in fig. 16, the flux 12 is sintered flux of type J101, and is placed in the hopper 3; as shown in fig. 3 and fig. 15, the plate 11 to be welded is made of two pieces of AH32 steel, and has the size specification of length, width, height, 500, 150, 30mm, a V-shaped groove angle of 55 to 60 degrees, a truncated edge of 8mm, a standard and straight groove angle, and a groove and two sides of 30mm polished to metallic luster; two plates to be welded 11 are assembled, the reverse sides of the grooves are subjected to tack welding, the anti-deformation amount is reserved, the upwarping of the groove surfaces of the welded steel plates is prevented, the anti-deformation amount is controlled to be about 3 degrees, and the plates to be welded 11 are fixed by inclining 30 degrees in the horizontal direction.

When the portable soft track swinging submerged arc welding device carries out welding operation, firstly, the soft track 4 is fixed on any plate 11 to be welded through strong magnetism, the trolley body 1 is installed on the soft track 4, the position of the clamping device is adjusted through the position adjuster, so that the position of the conductive nozzle 10 at the end part of the oscillator 2 is adjusted, the welding wire at the end part of the conductive nozzle 10 is opposite to a welding seam, and a welding loop is formed in the power box 14, the welding wire and the plate 11 to be welded; the welding flux 12 flows out from the hopper 3 along the discharge hole, then uniformly flows out through the material guide pipe and covers the welding seam of the plate to be welded 11, and the trolley body 1 moves along the soft rail 4, so that the plate to be welded 11 is welded under the action of a welding loop, and the problem that common submerged arc welding cannot be used for welding on a curved surface is solved.

The invention relates to a portable soft track swinging submerged arc welding device which is provided with a soft track 4, wherein the soft track 4 is made of plastic materials and is detachably arranged on a plate 11 to be welded through strong magnetism, so that the portable soft track swinging submerged arc welding device is suitable for curved surfaces and large-gradient welding seams (more than 30 degrees), and solves the problem that common submerged arc welding cannot be welded on the curved surfaces; the oscillator 2 is arranged, the oscillator 2 can drive the conductive nozzle 10 to oscillate, and further drive the electric arc to oscillate, so that the width of a welding seam is enlarged, the problems that the welding quality is not up to standard when a single-pass welding seam is formed in one step and a single-face welding seam is welded in a single-face welding mode, the welding width is not consistent, common submerged-arc welding cannot be used for welding, gap welding seam bridging capacity is poor and the like are solved, the purposes of high one-time melting efficiency, reduction of welding beads and layers, reduction of welding slag knocking-out frequency and improvement of labor efficiency are achieved.

Preferably, as shown in fig. 1, 2, 9, 10, the position adjuster includes a first adjusting device 5 provided on the cart body 1, and a second adjusting device 6 provided on the first adjusting device 5; the first adjusting device 5 comprises a first screw 502 rotatably mounted in the trolley body 1 through a bearing, a first slide block 501 slidably connected to the first screw 502 in a thread fit manner, and a first hand wheel 503 welded at the end of the first screw 502, and the second adjusting device 6 comprises a second screw 602 rotatably mounted in the first slide block 501 through a bearing, a second slide block 601 slidably connected to the second screw 602 in a thread fit manner, and a second hand wheel 603 welded at the end of the second screw 602; the oscillator 2 is mounted on the second slider 601. Further, as shown in fig. 6, a support plate is disposed between the oscillator 2 and the second slider 601, so that the oscillator 2 has better stability.

Preferably, as shown in fig. 1, the vertical extending direction of the first screw 502 is perpendicular to the horizontal extending direction of the flexible rail 4, and the horizontal extending direction of the second screw 602 is parallel to the horizontal extending direction of the flexible rail 4. When the first screw 502 is rotated by the first hand wheel 503, the first slider 501 moves up and down along the first screw 502 to drive the second adjusting device 6 and the oscillator 2 to move up and down, so as to adjust the up-and-down position of the oscillator 2; when the second hand wheel 603 rotates the second screw 602, the second slider 601 moves left and right along the second screw 602, and drives the oscillator 2 to move left and right, thereby adjusting the left and right positions of the oscillator 2. In this way, the position of the oscillator 2 can be adjusted up and down, left and right by the position adjuster.

Preferably, as shown in fig. 11, the trolley body 1 is further provided with a control panel 7 and a storage battery 8 connected to the control panel 7, and the control panel 7 is in communication connection with the oscillator 2 and the traveling drive source of the trolley body 1. Further, the control panel 7 is provided with the following knobs: a walking speed knob 701 for adjusting the walking speed of the trolley body 1, a start-stop knob 702 for controlling the start of the trolley body 1, a swing midpoint knob 703 for setting the midpoint of the oscillator 2, a mode setting knob 704 for adjusting the state of the equipment, a swing amplitude knob 705 for setting the swing amplitude of the oscillator 2, a swing speed knob 706 for setting the swing speed of the oscillator 2, a swing right stop knob 707 for controlling the swing stop, a swing left stop knob 708 for controlling the swing stop, a walking direction knob 709 for controlling the walking direction of the trolley body 1, and a welding knob 710 for controlling the on-off of a welding circuit. Further, as shown in fig. 12, the battery 8 is provided with a control panel socket 801 for supplying power to the control panel 7, a charging socket 802 for charging the battery 8 itself, and a wobbler socket 803 for supplying power to the wobbler 2. In this embodiment, the battery 8 is a 24V lithium battery pack.

Preferably, as shown in fig. 17, the portable soft track rocking submerged arc welding device further comprises a remote controller 13, and the control panel 7 is in communication connection with the remote controller 13. The remote controller 13 is provided with the following keys: a start-stop key 1301 for controlling the start of the trolley body 1, a welding key 1302 for controlling the on-off of a welding circuit, a walking direction key 1303 for controlling the walking direction of the trolley body 1, a swing left stop key 1304 for controlling the swing stop, a swing right stop key 1305 for controlling the swing stop, a walking speed key 1306 for adjusting the walking speed of the trolley body 1, a swing speed key 1307 for setting the swing speed of the oscillator 2, a swing amplitude key 1308 for setting the swing amplitude of the oscillator 2, a swing center key 1309 for setting the midpoint of the oscillator 2, a delay arc starting key 1310 for controlling the on-time of the welding circuit, and an indicator light 1311 for displaying the working state. Further, in the present embodiment, the operating parameters of the wobbler 2 are shown in the following table:

preferably, as shown in fig. 1 and 13, the portable soft track swinging submerged arc welding device further comprises a wire feeder 9, wherein the wire feeder 9 is electrically connected with a power box 14 through an output cable, and the wire feeder 9 supplies welding wire to the power nozzle 10. In the present embodiment, the welding parameters of the power box 14 are shown in the following table:

preferably, as shown in fig. 2, 3, 4 and 7, the cross-sectional area of the hopper 3 is gradually reduced from top to bottom, and the bottom of the hopper 3 is provided with a discharge port. Further, the hopper 3 is fixed on the left end face of the trolley body 1 through a connecting block, a material guide pipe is connected to a material outlet, and an outlet of the material guide pipe is arranged on the side right above the welding line.

Further, the invention further aims to provide a welding method of the portable soft track swing submerged arc welding device, which is used for solving the problems that submerged arc welding in the prior art is only suitable for flat position welding, has poor flexibility and is limited in application range.

The application relates to a welding method of a portable soft track swinging submerged arc welding device, which comprises the following steps:

a1, as shown in fig. 1, 13 and 14, electrically connecting the contact tube 10 and the wire feeder 9 with the power box 14, wherein the welding wire passes through the wire feeder 9 and passes through the outlet at the bottom end of the contact tube 10; the board to be welded 11 and the contact tip 10 are respectively connected to two poles of a power box 14, and the welding wire is conductively connected with the contact tip 10;

a2, laying the soft rail 4 at a certain position on the plate to be welded 11 by strong magnetic force, and installing the trolley body 1 on the soft rail 4;

a3, rotating the first hand wheel 503 to drive the first screw 502 to rotate, driving the first slider 501 to move up and down along the first screw 502, and driving the second screw 602 and the oscillator 2 to move up and down; the second hand wheel 603 is rotated to drive the second screw 602 to rotate, so as to drive the second slide block 601 to move left and right along the second screw 602, and drive the oscillator 2 to move left and right. When the first hand wheel 503 and the second hand wheel 603 rotate, the oscillator 2 moves up and down, left and right, so that the bottom end of the contact tip 10 fixed to the oscillator 2 stays right above the center of the weld of the board to be welded 11.

A4, adding the welding flux 12 into the hopper 3, wherein the welding flux 12 flows out through a discharge hole of the hopper 3, then uniformly flows out through a material guide pipe and covers the welding seam of the plate 11 to be welded;

a5, turning on a storage battery 8 to supply power to the walking power source of the trolley body 1 and the oscillator 2 through a control panel 7;

a6, sequentially setting working parameters of the oscillator 2, walking parameters of the trolley body 1 and power supply parameters of the power box 14 through the control panel 7, wherein the parameters are respectively shown in the table above; in a narrow space, the remote controller 13 can be used for remote control, and the operation process is as follows: before use, the remote controller 13 is paired with the control panel 7, a start-stop key 1301 of the remote controller 13 is pressed for a long time, a power switch of the remote controller 13 is turned on until a power indicator 1311 begins to flicker, the start-stop key 1301 is released, when the LED indicator 1311 of the remote controller 13 all flickers, the welding key 1302 is pressed, a welding device imaging digital tube displays 'P-', the remote controller 13 automatically enters a pairing mode, the welding device imaging digital tube displays 'O-', pairing is successful, and the remote controller 13 can realize a remote control function; the control functions of the control panel 7 and the remote controller 13 are shown in the following table:

name (R)	Function(s)
		Start-stop knob/key	Controlling the trolley to run and switching circularly
Walking speed knob/key	Rotating the potentiometer to adjust the traveling speed parameter of the trolley to 0.5CM/min
		Swing speed knob/key	Rotary potentiometer for regulating the oscillating speed of oscillator
Swing amplitude knob/key	Rotary potentiometer for regulating the swing angle of oscillator
		Swing center knob/key	The swing center is adjusted to be aligned, clockwise to the right and anticlockwise to the left
Left stay knob/key of oscillator	Adjusting the left dwell time of the swing, generally 0-2.5S
		Oscillator right stay knob/key	Adjusting the swing right dwell time, generally 0-2.5S
Walking direction knob/key	The running direction of the trolley is adjusted, and the left and the right are switched once every time the trolley is pressed
		Welding knob/key	Controlling on-off of welding circuit
Time-delay arcing key	Delay control of on-time of welding circuit

A7, opening a power box 14, the oscillator 2 and a driving device of the trolley body 1, wherein a welding loop is formed among the power box 14, the contact tip 10, the welding wire and the plate to be welded 11; the electric arc generated by the welding loop is burnt between the welding wire and the plate 11 to be welded to melt the base metal and the flux 12 at the end of the welding wire and near the electric arc, the molten base metal forms a molten pool, and the molten flux 12 becomes slag; with the walking of the trolley body 1 and the swinging of the oscillator 2, the walking speed of the trolley body 1 and the swinging speed of the oscillator 2 are balanced with the melting speed of the welding wire, the welding wire is continuously fed into the molten pool to be melted, the liquid metal in the molten pool is pushed to the rear part of the molten pool, after cooling, the part of the liquid metal is solidified into a welding line, and the slag is cooled and solidified into a slag shell to cover the surface of the welding line, so that the welding of the plate 11 to be welded is completed;

a8, in the whole welding process, the welding wire can be smoothly melted and the welding seam forming can be better controlled by continuously adjusting the working parameters of the control panel 7, the power supply box 14 and the control parameters of the oscillator 2.

The portable soft track swinging submerged arc welding device and the welding method provided by the invention have the advantages that the width of a welding seam is enlarged by arranging the oscillator 2; in the common submerged arc welding, the width of a welding seam is increased by increasing the voltage of the electric arc, but the voltage is too high, the electric arc cannot be matched with the welding current, the impact force of the electric arc is insufficient, the defects of air holes, slag inclusion, seaming and the like are easily generated, the quality of the welding seam is unstable, the single-pass welding seam is narrow in forming, and the defects of serious harmfulness such as single-side incomplete fusion, slag inclusion and the like are easily generated for a single-pass wider welding seam, and the oscillator 2 solves the problems; meanwhile, the common submerged-arc welding is limited by the width of a welding seam, so that the welding seam is very easy to weld through when a gap welding seam is welded, and particularly when the gap welding seam needs to be welded on a single side and a double side, the welding quality requirement is often not met, the width of the welding seam can be increased by adopting the oscillator 2, and the welding seam can be better formed; when the common submerged arc welding is carried out on a slope (more than 8 degrees) for welding, the influence of gravity and narrower welding seams is caused, the gravity of molten iron is greater than the surface tension of a molten pool, molten iron of the molten pool of the welding seam drops to form a welding beading, and the forming is difficult to control, but when the oscillator 2 swings left and right, the contact area between an electric arc and the two sides of the molten pool is increased, and the surface tension of the molten pool is greater than the gravity, so that the welding can be carried out smoothly on the slope (more than 8 degrees); the soft rail 4 is arranged, so that the welding operation of the curved surface welding seam can be adapted, and the welding seam carrying area can be better suitable.

Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.