CN216780606U

CN216780606U - Automatic welding gun adjusting device for welding wave-shaped plate of liquid cargo containment system

Info

Publication number: CN216780606U
Application number: CN202123222390.1U
Authority: CN
Inventors: 王勇标; 余锁成
Original assignee: Ningbo Kairong New Energy Co ltd
Current assignee: Ningbo Kairong New Energy Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-06-21
Anticipated expiration: 2031-12-21

Abstract

The utility model relates to a welding gun adjusting device for automatically welding a corrugated plate of a liquid cargo containment system, which comprises a height adjusting device and a transverse adjusting device, wherein the height adjusting device and the transverse adjusting device both adopt screw rod and nut mechanisms driven by a servo motor, each screw rod and nut mechanism comprises a rotating screw rod and a moving nut part, the screw rod and nut mechanisms are arranged on corresponding mounting frames, the mounting frame of the transverse adjusting device is connected with the nut part of the height adjusting device, the whole transverse adjusting device moves along with the nut part of the height adjusting device, and the nut part of the transverse adjusting device is provided with a connecting part connected with a welding gun. The horizontal adjusting device is used for adjusting the horizontal position of the welding gun, the mounting frame of the horizontal adjusting device is connected to the height adjusting device, the height adjusting device adjusts the height of the horizontal adjusting device, the height of the welding gun is further adjusted, the welding gun position is completed through two adjusting combinations, and the stability of the arc length of welding is guaranteed.

Description

Automatic welding gun adjusting device for welding wave-shaped plate of liquid cargo containment system

Technical Field

The utility model belongs to the field of automatic welding of wave-shaped plates of liquid cargo containment systems, and particularly relates to a welding gun adjusting device for automatic welding of wave-shaped plates of liquid cargo containment systems.

Background

In order to optimize the urban gas structure, improve the gas supply quality and improve the environment, natural gas as clean energy must become the first choice fuel in modern cities. The utility model relates to a thin film type liquid cargo containment system, which is a low-temperature liquid cargo transportation and storage system invented by France GTT company and is widely applied to LNG transport ships, LNG power ships and LNG onshore storage tanks.

The MKIII/GST film containment system is a special structure which is arranged on the inner wall of a ship cabin or an onshore storage tank. In the design, the adaptability of the cryogenic medium is mainly considered, so the requirement on the internal structure of the membrane tank is very high. In the LNG ship cargo tank and the land storage tank, a metal shielding layer is widely adopted, and the metal shielding layer is a corrugated plate which is installed on the inner wall through welding and is made of a low-temperature stainless steel plate (304L) material with the thickness of 1.2 mm. Therefore, in the construction process of the film type enclosure system, the automatic welding technology for splicing the stainless steel corrugated plates which can absorb the thermal stress is a key factor in the construction process.

The welding forms of the wave-shaped plates in the liquid cargo tank/storage tank include transverse welding, overhead welding, vertical welding, oblique welding, corner welding and the like, the installation modes are multiple, in the welding process, a welding gun needs to be always kept in a vertical state with the wave-shaped plate surface of a welding point, the stable arc length below 1 mm needs to be kept, particularly, the corrugated part of the wave-shaped plate is easy to weld through at a too close distance in the welding operation process, and the welding gun is easy to leak or have weak welding or other defects at a too far distance, so that a device capable of adjusting the position of the welding gun is needed in automatic welding.

Disclosure of Invention

The utility model provides a welding gun adjusting device for automatically welding a corrugated plate of a liquid cargo containment system, which realizes welding gun position adjustment by combining a transverse adjusting device and a height adjusting device, wherein the transverse adjustment is carried out on the basis of height adjustment, the transverse adjustment and the height adjustment are independent, the transverse adjusting device is used for adjusting the position of a welding gun relative to the edge of the corrugated plate, the height adjusting device is used for adjusting the height of the welding gun relative to the surface of the corrugated plate, and the two adjustments are combined to complete the position of the welding gun, so that the stability of the arc length of welding is ensured, the welding seam tracking function in the welding process is also facilitated, and the compensation effect of on-site straightness deviation after splicing the corrugated plates is met.

The specific technical scheme of the utility model is as follows: a welding gun adjusting device for automatically welding a corrugated plate of a liquid cargo containment system comprises a height adjusting device and a transverse adjusting device, wherein the height adjusting device and the transverse adjusting device both adopt screw rod and nut mechanisms driven by a servo motor, each screw rod and nut mechanism comprises a rotating screw rod and a moving nut part, the screw rod and nut mechanisms are arranged on corresponding mounting frames, the mounting frame of the transverse adjusting device is connected with the nut part of the height adjusting device, the transverse adjusting device integrally moves along with the nut part of the height adjusting device, and the nut part of the transverse adjusting device is provided with a connecting part connected with a welding gun; guide rails are fixed on the mounting frames, sliding blocks are matched on the guide rails, and the nut parts are connected with the corresponding sliding blocks.

The horizontal adjusting device is connected with the welding gun, the horizontal position of the welding gun is used for adjusting, the mounting frame of the horizontal adjusting device is connected on the height adjusting device, the height of the horizontal adjusting device is adjusted by the height adjusting device, the height of the welding gun is further adjusted, the horizontal adjusting device and the height adjusting device do not interfere with each other, the adjustment is independent of each other, the horizontal adjusting device adjusts the position of the edge of the relative wave-shaped plate of the welding gun, the height adjusting device adjusts the height of the surface of the relative wave-shaped plate of the welding gun, the welding gun position is completed by two adjusting combinations, and the stability of the arc length of welding is guaranteed.

Further preferably, backup pad and bottom suspension fagging are provided with on height adjusting device's the mounting bracket, the lead screw both ends through the bearing connect with last backup pad and bottom suspension fagging on, go up the connection motor mounting panel in the backup pad, servo motor is fixed in the motor mounting panel, servo motor's output shaft and lead screw axis are mutually perpendicular, are connected through gear drive between servo motor and the lead screw. The horizontal adjusting device is arranged on the height adjusting device, so that the space of the height adjusting device is influenced to a certain degree, and the servo motors of the height adjusting device are arranged perpendicular to the lead screws and are connected through the gear transmission mechanism, so that the transmission and installation space is reduced.

More preferably, a worm wheel is fixed to the screw, a worm is fixed to an output shaft of the servo motor, and external helical teeth of the worm mesh with external teeth of the worm wheel. The worm gear mechanism is only one scheme, and can also adopt bevel gear transmission, and the output angle of the servo motor is controlled through an angle sensor, so that the size of height adjustment is controlled.

Further preferably, the guide rail of mounting bracket parallels with the lead screw, and the slider on the guide rail is two, and the guide rail is squarely, and the both sides of guide rail are provided with the concave surface, and the slider has the recess, and the recess is detained on the guide rail, is provided with the ball in the recess, and the ball cooperatees with the concave surface.

Preferably, the nut member of the height adjusting device includes a nut screwed to the lead screw and a connecting plate fixed to the nut, and the connecting plate is fixed to the slider of the height adjusting device.

Further preferably, be provided with left branch fagging and right branch fagging on transverse adjusting device's the mounting bracket, the lead screw both ends are passed through the bearing and are connected in left branch fagging and right branch fagging, the tip of lead screw stretches out and connects the belt pulley outside left branch fagging and stretching out the end, servo motor installs and the left branch fagging is last, servo motor's output shaft stretches out and connects the belt pulley outside left branch fagging and stretching out the end, link to each other through the hold-in range between two belt pulleys, servo motor's the axis of output shaft parallels with the axis of lead screw.

Preferably, a guide rail of the transverse adjusting device is fixed on the lower surface of the mounting frame, the guide rail is parallel to the screw rod, and a sliding block on the guide rail is connected with a nut component on the screw rod.

More preferably, the connecting member has two connecting holes, the two connecting members are fixed to a nut member of the lateral adjustment device so as to be separated from each other, and a welding gun mounting position is formed between the two connecting members.

Further preferably, a notch is formed in the side edge of the mounting frame of the transverse adjusting device, stoppers are fixed to the positions of the two ends of the notch in the mounting frame, a stroke rod is connected to a nut component of the transverse adjusting device, and the stroke rod extends into the notch. The stroke rod extends into the gap, moves along with the nut component and triggers the limiting stopper when moving to the limit position, so that the moving distance of the nut component is controlled.

The utility model has the beneficial effects that: the horizontal adjusting device is connected with a welding gun and used for adjusting the horizontal position of the welding gun, an installation frame of the horizontal adjusting device is connected to the height adjusting device, the height adjusting device adjusts the height of the horizontal adjusting device, the height of the welding gun is further adjusted, the horizontal adjusting device and the height adjusting device do not interfere with each other, adjustment is independent, the horizontal adjusting device adjusts the position of the edge of the welding gun relative to a wave-shaped plate, the height adjusting device adjusts the height of the welding gun relative to the surface of the wave-shaped plate, the two adjustment combinations are combined to complete the position of the welding gun, the stability of the arc length of welding is guaranteed, the function of tracking a welding seam in the welding process is facilitated, and the compensation effect of on-site linearity deviation after the wave-shaped plates are spliced is met.

Drawings

FIG. 1 is a schematic diagram of one configuration of the present invention;

FIG. 2 is a schematic view of a lateral adjustment mechanism of the present invention;

FIG. 3 is a schematic view of a height adjustment mechanism according to the present invention;

in the figure: 1. welding gun, 2, horizontal adjusting device, 3, height adjusting device, 4, left support plate, 5, belt pulley, 6, synchronous belt, 7, lead screw, 8, stopper, 9, breach, 10, stroke pole, 11, slider, 12, adapting unit, 13, nut part, 14, guide rail, 15, right branch fagging, 16, mounting bracket, 17, servo motor, 18, last backup pad, 19, bottom suspension fagging, 20, connecting plate, 21, mounting panel.

Detailed Description

The utility model is further described by the following specific embodiments in conjunction with the accompanying drawings.

Example (b):

a welding gun adjusting device for automatically welding a corrugated plate of a liquid cargo containment system comprises a height adjusting device 3 and a transverse adjusting device 2, wherein the height adjusting device and the transverse adjusting device both adopt a screw rod and nut mechanism driven by a servo motor.

As shown in fig. 2, the horizontal adjusting device comprises a horizontal mounting rack 16, a left support plate 4 is arranged on the left side of the mounting rack, a right support plate 15 is arranged on the right side of the mounting rack, the left support plate and the right support plate are parallel and perpendicular to the mounting rack, and the upper side of the left support plate is higher than the mounting rack and is used for installing a servo motor 17. The upper portion of left branch fagging is provided with decurrent recess, and servo motor is fixed in on the mounting panel, and the mounting panel inserts to the recess in and fixed, and servo motor's output shaft stretches out outside the left branch fagging, stretches out to serve and is fixed with belt pulley 5. The side of mounting bracket is provided with breach 9, and the both ends position of breach on this mounting bracket is fixed with stopper 8. The lower surface of mounting bracket is fixed with guide rail 14, is furnished with slider 11 on the guide rail, and the guide rail is squarely, and the both sides of guide rail are provided with the concave surface, and the slider has the recess, and the recess is detained on the guide rail, is provided with the ball in the recess, and the ball cooperatees with the concave surface. And a screw rod 7 is arranged between the left support plate and the right support plate, bearings are sleeved at two ends of the screw rod, the axis of the screw rod is parallel to the axis of the guide rail, and the axis of an output shaft of the servo motor is parallel to the axis of the screw rod. The left end of lead screw stretches out outside left support plate, stretches out the end fixed belt pulley, is connected hold-in range 6 between this belt pulley and the belt pulley on the servo motor output shaft, and servo motor rotates, drives the lead screw through the hold-in range and rotates. The screw rod is sleeved with a nut component 13, the nut component comprises a nut and a shell, the side edge of the shell is connected with a vertically arranged stroke rod 10, and the stroke rod extends into the gap. Two connecting parts 12 are fixed below the shell, connecting holes are arranged on the connecting parts, the two connecting parts are separated from each other left and right and are kept parallel, and a welding gun mounting position is formed between the two connecting parts. The right supporting plate is provided with a connecting hole and is connected with the height adjusting device through the connecting hole.

As shown in fig. 3, the height adjusting device includes a mounting frame, on which an upper supporting plate 18 and a lower supporting plate 19 are disposed, the upper supporting plate and the lower supporting plate being parallel to each other and perpendicular to the mounting frame. A screw rod is arranged between the upper supporting plate and the lower supporting plate, and bearings are sleeved at two ends of the screw rod. An installation plate 21 is fixed on the upper supporting plate, and the installation plate is vertical to the upper supporting plate and is parallel to the installation frame. Be provided with servo motor on the mounting panel, in servo motor's output shaft stretched into the position between mounting panel and the mounting bracket, servo motor's the axis of output shaft and the axis looks perpendicular of lead screw. The screw rod is in transmission connection with the servo motor through a worm gear mechanism (not shown in the figure), a worm wheel is fixed on the screw rod, a worm is fixed on an output shaft of the servo motor, and the worm is meshed with the worm wheel. An angle sensor is also arranged on the mounting plate. The screw rod is sleeved with a nut component, and the nut component comprises a nut in threaded connection with the screw rod and a connecting plate 20 fixed with the nut. A guide rail 14 is fixed on the mounting rack, the guide rail is parallel to the screw rod, two sliding blocks 11 are matched on the guide rail, and the connecting plate is fixed with the two sliding blocks. The guide rail is square, concave surfaces are arranged on two sides of the guide rail, the sliding block is provided with a groove, the groove is buckled on the guide rail, and balls are arranged in the groove and matched with the concave surfaces. The connecting plate is provided with 4 connecting holes, and the 4 connecting holes correspond to the positions of the connecting holes in the right supporting plate of the transverse adjusting device.

As shown in fig. 1, the welding gun 1 is fixed to two connection members of the lateral adjustment device, and a right support plate of the lateral adjustment device is fixed to a connection plate of the height adjustment device by bolts. The servo motor rotates, the lead screw is driven to rotate through the synchronous belt or the worm gear, the nut component moves along the axial direction of the lead screw, and then the height position and the transverse position of the welding gun are adjusted.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A welding gun adjusting device for automatically welding a corrugated plate of a liquid cargo containment system is characterized by comprising a height adjusting device (3) and a transverse adjusting device (2), wherein the height adjusting device and the transverse adjusting device both adopt a screw rod and nut mechanism driven by a servo motor (17), the screw rod and nut mechanism comprises a rotating screw rod and a moving nut component, the screw rod and nut mechanism is arranged on a corresponding mounting frame (16), the mounting frame of the transverse adjusting device is connected with the nut component of the height adjusting device, the transverse adjusting device integrally moves along with the nut component of the height adjusting device, and the nut component of the transverse adjusting device is provided with a connecting component (12) connected with a welding gun; guide rails (14) are fixed on the mounting rack, slide blocks (11) are arranged on the guide rails, and the nut components are connected with the corresponding slide blocks.

2. The automatic welding gun adjusting device for the corrugated plate of the liquid cargo containment system according to claim 1, wherein an upper support plate (18) and a lower support plate (19) are arranged on a mounting rack of the height adjusting device, two ends of the screw rod are connected with the upper support plate and the lower support plate through bearings, a motor mounting plate (21) is connected with the upper support plate, the servo motor is fixed on the motor mounting plate, an output shaft of the servo motor is perpendicular to the axis of the screw rod, and the servo motor is connected with the screw rod through a gear transmission mechanism.

3. The automatic welding gun adjusting device for the corrugated plate of the liquid cargo containment system according to claim 2, wherein a worm gear is fixed on the screw rod, a worm is fixed on an output shaft of the servo motor, and external spiral teeth of the worm are meshed with external teeth of the worm gear.

4. The automatic welding gun adjusting device for the corrugated plate of the liquid cargo containment system according to claim 2, wherein the guide rails of the mounting frame are parallel to the screw rod, the number of the slide blocks on the guide rails is two, the guide rails are square, concave surfaces are arranged on two sides of the guide rails, the slide blocks are provided with grooves, the grooves are buckled on the guide rails, balls are arranged in the grooves, and the balls are matched with the concave surfaces.

5. The automatic welding gun adjusting device for the corrugated plate of the liquid cargo containment system according to the claim 1, 2, 3 or 4, characterized in that the nut member of the height adjusting device comprises a nut in threaded connection with the lead screw and a connecting plate (20) fixed with the nut, and the connecting plate is fixed with the slide block of the height adjusting device.

6. The automatic welding gun adjusting device for the corrugated plate of the liquid cargo containment system according to claim 1, wherein a left support plate (4) and a right support plate (15) are arranged on a mounting frame of the transverse adjusting device, two ends of a screw rod are connected to the left support plate and the right support plate through bearings, the end portion of the screw rod extends out of the left support plate and is connected with a belt pulley (5) at the extending end, a servo motor is mounted on the left support plate, an output shaft of the servo motor extends out of the left support plate and is connected with the belt pulley at the extending end, the two belt pulleys are connected through a synchronous belt (6), and the axis of the output shaft of the servo motor is parallel to the axis of the screw rod.

7. The automatic welding gun adjusting device for the corrugated plate of the liquid cargo containment system according to claim 6, wherein a guide rail of the transverse adjusting device is fixed on the lower surface of the mounting frame, the guide rail is parallel to the lead screw, and a slide block on the guide rail is connected with a nut component on the lead screw.

8. The automatic welding gun adjusting device for the wave-shaped plate of the liquid cargo containment system according to claim 1, 6 or 7, wherein the connecting parts are provided with connecting holes, the two connecting parts are two, the two connecting parts are separately fixed on the nut part of the transverse adjusting device, and a welding gun mounting position is formed between the two connecting parts.

9. The automatic welding gun adjusting device for the wave-shaped plate of the liquid cargo containment system according to the claim 1, 6 or 7, characterized in that the side of the mounting rack of the transverse adjusting device is provided with a notch (9), the two ends of the notch on the mounting rack are fixed with a stop (8), the nut component of the transverse adjusting device is connected with a stroke rod (10), and the stroke rod extends into the notch.