CN113333997B - Storage tank body welding device - Google Patents

Abstract

The invention relates to the technical field of metal welding, and provides a welding device for a storage tank body, which comprises a fixed platform, a welding device and a welding device, wherein the fixed platform is provided with a turntable and two stand columns; two annular rails are fixed between the two upright posts; the annular rail is provided with a welding vehicle; an outer welding gun is arranged on the welding vehicle, and outer welding seams are respectively formed at the combination parts of the tank body and the tank bottom and the tank body and the tank opening; the inner part of the storage tank extends into the centering shaft; a centering adjusting mechanism is arranged on the centering shaft; the centering shaft is also provided with an inner welding mechanism, and an inner welding seam is formed on the inner wall of the storage tank along with the rotation of the storage tank. Therefore, the rotary table, the clamping jaws and the pressing plate are arranged on the fixed platform, so that the tank opening, the tank body and the tank bottom of the storage tank are vertically fixed. The outer welding gun moving on the circular rail realizes the forming of the outer welding seam; meanwhile, an inner welding mechanism is arranged, and after the outer welding seam is formed, the inner welding seam can be formed inside the storage tank. Welding degree of automation is high, replaces artifical operation that gets into in the jar, reduces intensity of labour, improves welding efficiency.

Description

Storage tank body welding device

Technical Field

The invention belongs to the technical field of metal welding, and particularly relates to a welding device for a storage tank body.

Background

A pressure vessel accumulator, such as an accumulator for storing refrigerant. Since the refrigerant is easily vaporized, the storage tank is generally required to be able to withstand a certain pressure. The refrigerator storage tank is usually formed by welding, but the refrigerator storage tank has certain requirements on the pressure bearing capacity of a welding seam when used as a pressure container.

Referring to fig. 1, the conventional refrigerant storage tank generally has a structure in which a tank bottom 101, a tank body 102, and a tank opening 103 are sequentially arranged and connected as a whole by welding at a position where the tank bottom, the tank body, and the tank opening are combined in pairs.

For a storage tank with large capacity, in order to reach the pressure-bearing standard, welding processes are generally adopted at welding positions outside and inside the tank respectively, so that two-side welding seams are formed at one connecting position to ensure the pressure-bearing capacity.

In the existing process, a welding seam is formed outside a tank, and then a worker enters the tank to work to form the welding seam in the tank. However, since the internal space of the storage tank is narrow, it is difficult to use automatic equipment for welding inside the storage tank, which results in poor working environment, high labor intensity and low working efficiency. Manufacturing costs are also indirectly driven up as labor costs increase year by year.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

Disclosure of Invention

Aiming at the defects, the invention aims to provide a storage tank body welding device, which realizes the vertical fixation of a tank opening, a tank body and a tank bottom of a storage tank by arranging a rotary table, a clamping jaw and a pressing plate on a fixed platform. The outer welding gun capable of moving on the circular rail is arranged, so that one-time forming of an outer welding seam is realized; meanwhile, an inner welding mechanism is arranged, and after the outer welding seam is formed, the inner welding seam can be formed inside the storage tank. Welding degree of automation is high, replaces artifical operation that gets into in the jar, reduces intensity of labour, improves welding efficiency.

In order to achieve the above object, the present invention provides a welding device for a tank body of a storage tank, comprising a fixed platform; the fixed platform is provided with a turntable for fixing the tank opening; a flange plate is arranged on the tank opening; the turntable is also provided with a fixing component for crimping the flange plate;

two sides of the rotary table are symmetrically provided with two upright posts; the two upright posts are respectively provided with a tank body clamping jaw for fixing the tank body right above the tank opening;

a cover plate lifting cylinder is respectively arranged on the two upright posts, the telescopic parts of the two cover plate lifting cylinders are connected with the cover plate, and a rotatable pressure plate is arranged at the center of the cover plate; the pressure plate magnetically attracts the tank bottom, and the tank bottom is inverted right above the tank body;

an annular rail is fixed between the two upright posts; the annular rail is provided with a welding vehicle; a welding gun lifting adjusting cylinder is arranged on the welding vehicle, and the telescopic part of the welding gun lifting adjusting cylinder is connected with a welding gun plate; an outer welding gun is arranged on the welding gun plate; the two annular rails are respectively positioned at the upper side and the lower side of the tank body clamping jaw; the outer welding guns on the two annular rails are respectively used for forming outer welding seams at the combination parts of the tank body and the tank bottom and the tank body and the tank opening to manufacture the storage tank;

a centering lifting platform is arranged below the fixed platform, an adjusting plate is arranged on the centering lifting platform, and a centering shaft capable of extending into the storage tank is fixed on the adjusting plate; an adjusting lifting cylinder is arranged below the centering lifting platform; the top of the centering shaft is provided with a shaft top universal wheel;

the centering shaft is provided with a centering adjusting mechanism for adjusting the center of the centering shaft and the center of the storage tank to be in a superposed state;

and the fixed center shaft is also provided with an internal welding mechanism, and the internal welding mechanism forms an internal welding seam at a preset position of the inner wall of the storage tank along with the rotation of the storage tank.

According to the welding device for the storage tank body, the tank body clamping jaw is arranged on the clamping jaw cylinder, and the clamping jaw cylinder is fixedly arranged on the upright post.

According to the welding device for the storage tank body, the two upright posts are respectively provided with a cover plate transverse moving rail; and a cover plate moving vehicle is arranged on the cover plate transverse moving rail, and the cover plate lifting cylinder is fixed on the cover plate moving vehicle.

According to the welding device for the storage tank body, the outer welding gun is arranged on the welding gun plate in a sliding mode, the welding gun plate is further provided with the welding gun horizontal adjusting cylinder, and the welding gun horizontal adjusting cylinder is connected with the outer welding gun.

According to the welding device for the tank body of the storage tank, the turntable is arranged on the fixed platform through the rotary support; the fixed cover in the outside of carousel is equipped with the carousel ring gear, carousel ring gear transmission connects the carousel gear, carousel gear connection carousel motor.

According to the storage tank body welding device, the centering adjusting mechanism comprises: three retractable centering arms which are uniformly and annularly arranged on the centering shaft; each centering arm comprises a plurality of centering sleeves which are movably sleeved in sequence, wherein the centering sleeve at one end is fixed on the centering shaft and is connected with a centering air pressure source; the end part of the centering sleeve positioned at the tail end in the telescopic direction is provided with a centering ball;

the centering shaft is also provided with an in-tank operation arm capable of moving along the axial direction of the centering shaft; the in-tank operation arm comprises a plurality of operation sleeves which are movably sleeved in sequence, wherein the operation sleeve at one end is fixed on the shaft climbing vehicle and is connected with an operation air pressure source;

the in-tank operation arm is fixed on the shaft climbing vehicle; an axial rack is arranged on the centering shaft; the shaft climbing vehicle is provided with a shaft climbing gear which is in transmission connection with the axial rack; the shaft climbing gear is also connected with a shaft climbing motor fixed on the shaft climbing vehicle; two sides of the axial rack are respectively provided with an axial clamping groove; two sides of the shaft climbing vehicle are respectively provided with a row of shaft climbing rollers correspondingly embedded into the axial clamping grooves on the side;

the inner welding mechanism comprises a welding box fixed on the operation arm in the tank; an inner welding gun is fixed on the welding box; an auxiliary light source and an inner welding camera are also fixed on the welding box;

the welding box is also provided with a top wall pressure rod and a retraction rod which are respectively positioned above and below the inner welding gun; and the end parts of the top wall pressure lever and the retraction lever are both provided with top wall balls.

According to the welding device for the tank body of the storage tank, two sliding strips are arranged on the bottom surface of the adjusting plate in parallel; the top and the bottom of the sliding strip are respectively provided with an upper sliding rail and a lower sliding rail; the bottom surface of the adjusting plate and the top surface of the centering lifting platform are respectively provided with an upper rail groove and a lower rail groove corresponding to the upper slide rail and the lower slide rail; the upper rail groove and the lower rail groove are vertically arranged in space.

According to the welding device for the storage tank body, the number of the top wall pressure rods is two; a compression spring plate is arranged in the welding box; the top wall pressure bar movably penetrates through the pressure spring plate, and the rod body is sleeved with the pressure spring.

According to the welding device for the storage tank body, the number of the in-tank operation arms is two, one end of the in-tank operation arm is connected with the inner welding mechanism, and the other end of the in-tank operation arm is connected with the cleaning mechanism; the cleaning mechanism comprises an end cover fixedly connected to the end part of the operation sleeve located at the tail end of the tank in the telescopic direction of the operation arm, and an inner wall brush disc is arranged on the end cover.

According to the welding device for the tank body of the storage tank, the inner wall brush disc is fixedly connected with the rotating rod; a sliding sleeve is sleeved at the center of the end cover; a plurality of sliding balls are uniformly arranged on the inner wall of the sliding sleeve; the rotating rod penetrates into the sliding sleeve, and the outer wall of the rotating rod is abutted to the sliding ball;

one end of the rotating rod, which extends into the operation sleeve, is provided with a rotating impeller, and the rod body of the rotating rod is provided with a sealing ring; the end cover is provided with a sealing groove matched with the sealing ring, and a plurality of air outlet holes are formed in the area of the sealing groove of the end cover; and brush disc balls are arranged on the inner wall brush disc.

The invention aims to provide a storage tank body welding device, which realizes the vertical fixation of a tank opening, a tank body and a tank bottom of a storage tank by arranging a rotary table, a clamping jaw and a pressing plate on a fixed platform. The outer welding gun capable of moving on the circular rail is arranged, so that one-time forming of an outer welding seam is realized; meanwhile, an inner welding mechanism is arranged, and after the outer welding seam is formed, the inner welding seam can be formed inside the storage tank. Welding degree of automation is high, replaces artifical operation that gets into in the jar, reduces intensity of labour, improves welding efficiency.

Drawings

FIG. 1 is a schematic structural view of a storage tank of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the structure in the direction A of FIG. 2;

FIG. 4 is a schematic structural diagram of the region B in FIG. 3;

FIG. 5 is a schematic view of the structure of FIG. 4 in the direction C;

FIG. 6 is a schematic view of the structure of FIG. 5 in the direction D-D;

FIG. 7 is a schematic view of the structure within the canister of FIG. 2;

FIG. 8 is a schematic structural diagram of region E in FIG. 7;

FIG. 9 is a schematic view of the structure in the direction G-G of FIG. 7;

FIG. 10 is a schematic structural view of region H in FIG. 9;

FIG. 11 is a schematic structural view of the region F in FIG. 7;

FIG. 12 is a schematic view of the structure of FIG. 11 in the direction J;

FIG. 13 is a schematic view of the structure of FIG. 9 in the direction I;

FIG. 14 is a schematic view of the L-direction structure of FIG. 13;

FIG. 15 is a schematic view of the structure of FIG. 9 in the direction K;

fig. 16 is a structural view illustrating an open state of the N region in fig. 15;

FIG. 17 is a schematic structural view of a closed state of the N region in FIG. 15;

FIG. 18 is a schematic structural view of the O region in FIG. 16;

FIG. 19 is a schematic view of the structure of FIG. 18 in the direction M;

FIG. 20 is a schematic view of the P-direction structure of FIG. 16;

in the figure: 1-a fixed platform, 11-a vertical column, 111-a tank body jaw and 112-a jaw cylinder; 12-cover plate, 121-pressure plate, 122-cover plate lifting cylinder, 123-cover plate moving vehicle and 124-cover plate transverse moving rail; 13-turntable, 14-turntable gear, 15-turntable motor, 16-rotary support, 17-pressing plate stud, 18-pressing plate sheet and 19-pressing plate nut; 2-centering shaft, 21-adjusting plate, 211-upper rail groove; 22-centering lifting platform, 221-lower rail groove; 23-adjusting a lifting cylinder, 24-an axis top universal wheel, 25-a welding box, 251-an auxiliary light source, 252-an inner welding camera, 253-an inner welding gun, 254-a compression bar spring and 255-a compression spring plate; 26-axial rack, 27-axial clamping groove, 28-sliding strip, 281-upper slide rail, 282-lower slide rail, 29-centering arm and 291-centering ball; 3-in-tank operation arm, 31-climbing shaft vehicle, 32-inner wall brush disc, 33-climbing shaft gear, 34-climbing shaft motor, 35-climbing shaft roller, 36-top wall pressure lever, 37-auxiliary wire wheel, 38-brush disc ball and 39-retraction rod; 4-annular rail, 41-welding vehicle, 42-outer welding gun, 43-welding gun plate, 44-welding gun lifting adjusting cylinder and 45-welding gun horizontal adjusting cylinder; 5-rotating rod, 51-rotating impeller, 52-sealing ring, 53-check ring and 54-blade; 6-end cover, 61-sealing groove, 62-air outlet hole, 63-slip sleeve and 64-slip ball; 101-tank bottom, 102-tank body and 103-tank opening.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined, without conflict, by one skilled in the art

And (4) merging and combining.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Referring to fig. 2, the present invention provides a welding device for a tank body of a storage tank, comprising a fixed platform 1; a rotary table 13 for fixing the tank opening 103 is arranged on the fixed platform 1; a flange plate is arranged on the tank opening 103; the rotary table 13 is also provided with a fixing component for crimping the flange plate;

preferably, the fixing component comprises a plurality of pressure plate studs 17 uniformly arranged on the rotary table 13 in a surrounding manner; a pressure plate sheet 18 for crimping the flange plate is movably sleeved on the pressure plate stud 17; the pressure plate stud 17 is also in threaded connection with a pressure plate nut 19; the tank opening 103 is inverted on the rotary table 13, the pressing plate piece 18 is pressed on the flange plate, and the pressing plate nut 19 is screwed down to fix the tank opening 103 on the rotary table 13.

Further, to ensure the fastening, the number of the platen studs 17 is at least four, and preferably five or six according to the present invention.

Two upright posts 11 are symmetrically arranged on two sides of the rotary table 13; the two upright posts 11 are respectively provided with a can body claw 111 for fixing the can body 102 right above the can opening 103; preferably, the tank body jaw 111 is arranged on a jaw cylinder 112, and the jaw cylinder 112 is fixedly arranged on the upright post 11.

A cover plate lifting cylinder 122 is respectively arranged on the two upright posts 11, the telescopic parts of the two cover plate lifting cylinders 122 are connected with the cover plate 12, and a rotatable pressure plate 121 is arranged at the center of the cover plate 12; the platen 121 magnetically attracts the can bottom 101 and inverts the can bottom 101 directly over the can body 102.

Referring to fig. 3, a cover plate transverse rail 124 is respectively arranged on the two upright posts 11; a cover plate moving vehicle 123 is arranged on the cover plate transverse moving rail 124, and the cover plate lifting cylinder 122 is fixed on the cover plate moving vehicle 123; the two deck moving carriages 123 move simultaneously to facilitate alignment of the can body 102 with the can bottom 101 at the joint. The two lid lifting cylinders 122 are simultaneously lifted and lowered to bring the joint portions of the can body 102 and the can mouth 103 into contact with each other.

After the tank is formed, the platen 121 may be lifted or traversed away from the tank bottom 101.

With reference to fig. 4-6, an annular rail 4 is fixed between the two upright posts 11; the annular rail 4 is provided with a welding vehicle 41; a welding gun lifting adjusting cylinder 44 is arranged on the welding vehicle 41, and the telescopic part of the welding gun lifting adjusting cylinder 44 is connected with a welding gun plate 43; the welding gun plate 43 is provided with an outer welding gun 42;

the torch elevation adjusting cylinder 44 adjusts the height of the outer torch 42, the welding vehicle 41 moves along the circular rail 4, and the outer torch 42 performs a circular weld. Preferably, the outer welding gun 42 is slidably disposed on the welding gun plate 43, a welding gun horizontal adjusting cylinder 45 is further disposed on the welding gun plate 43, and the welding gun horizontal adjusting cylinder 45 is connected to the outer welding gun 42. The torch horizontal adjustment cylinder 45 adjusts the feed amount of the torch plate 43 so that it can accurately reach the welding position.

The number of the annular rails 4 is two, and the two annular rails are respectively positioned at the upper side and the lower side of the tank body clamping jaw 111. The outer welding guns 42 on the two annular rails 4 are respectively used for welding the joint parts of the tank body 102 and the tank bottom 101 and the joint parts of the tank body 102 and the tank opening 103 and forming outer welding seams at the relevant positions.

For the storage tank with smaller specification or lower pressure-bearing requirement, only the welding of the outer welding seam can be carried out. And for the storage tank with larger specification, an inner welding seam is required to be formed at the corresponding position in the tank so as to meet the pressure-bearing requirement. The invention is provided with a mechanism for forming an inner welding seam, after an outer welding seam is formed, the tank bottom 101, the tank body 102 and the tank opening 103 form a storage tank, and then the inner welding seam mechanism works to form the inner welding seam in the tank.

Referring to fig. 7, the rotary table 13 is disposed on the fixed platform 1 through a rotary support 16; a turntable gear ring is fixedly sleeved on the outer side of the turntable 13 and is in transmission connection with a turntable gear 14, and the turntable gear 14 is connected with a turntable motor 15; the turntable motor 15 can drive the storage tank to integrally rotate.

A centering lifting platform 22 is arranged below the fixed platform 1, an adjusting plate 21 is arranged on the centering lifting platform 22, and a centering shaft 2 capable of extending into the storage tank is fixed on the adjusting plate 21; an adjusting lifting cylinder 23 is arranged below the centering lifting platform 22;

the top of the centering shaft 2 is provided with a shaft top universal wheel 24; the lifting cylinder 23 is adjusted to be lifted to a proper height, so that the top universal wheel 24 can be pressed against the center position of the tank bottom 101.

The centering shaft 2 is provided with a centering adjusting mechanism for adjusting the center of the centering shaft 2 and the center of the storage tank to be in a superposed state;

the centering shaft 2 is also provided with an internal welding mechanism, and the internal welding mechanism forms an internal welding seam at a preset position of the inner wall of the storage tank along with the rotation of the storage tank;

referring to fig. 9, the centering adjustment mechanism includes: three retractable centering arms 29 uniformly annularly arranged on the centering shaft 2; each centering arm 29 comprises a plurality of centering sleeves which are movably sleeved in sequence, wherein the centering sleeve at one end is fixed on the centering shaft 2 and is connected with a centering air pressure source; the end part of the centering sleeve positioned at the extreme end in the telescopic direction is provided with a centering ball 291;

the centering air pressure source is filled with compressed air with preset pressure, so that all the centering sleeves of the centering arms 29 can extend out in sequence; the centering air pressure source drives the centering sleeves of the three centering arms 29 to extend out at the same time by the same air pressure; when the centering balls 291 of one of the centering arms 29 abut against the inner wall of the can body 102, the reaction force generated drives the centering shaft 2 to move in the opposite direction until the centering balls 291 of the other two centering arms 29 abut against the inner wall of the can body 102. The forces of the three centring arms 29 are balanced, the centring shaft 2 coinciding with the central axis of the tank. The centring shaft 2 is then raised and the top-mounted castor 24 is brought to a central position inside the tank bottom 101. When the tank rotates, the centering balls 291 of the three centering arms 29 always abut against the inner wall of the tank body 102, and the centering shaft 2 is kept to be aligned with the center axis of the tank.

After the operation is finished, the centering air pressure source is closed, and the storage tank is vertically lifted upwards. After the centering balls 291 of the centering arms 29 contact the arc-shaped portion of the opening 103, the centering sleeves are gradually pushed back until they are pulled out from the opening position.

Referring to fig. 11, two sliding strips 28 are arranged in parallel on the bottom surface of the adjusting plate 21; the top and the bottom of the sliding strip 28 are respectively provided with an upper sliding rail 281 and a lower sliding rail 282; the bottom surface of the adjusting plate 21 and the top surface of the centering lifting table 22 are respectively provided with an upper rail groove 211 and a lower rail groove 221 corresponding to the upper sliding rail 281 and the lower sliding rail 282; the upper rail groove 211 and the lower rail groove 221 are vertically arranged in space;

the upper slide rail 281 and the lower slide rail 282 slide freely in the upper rail groove 211 and the lower rail groove 221 respectively, so that the X-direction and the Y-direction free adjustment of the adjusting plate 21 in the horizontal plane is realized, and further the coaxial adjustment of the centering shaft 2 in the storage tank is realized.

Referring to fig. 12, each glide bar 28 connects two lower glide tracks 282; further, the cross section of the upper sliding rail 281 is triangular, and the fit clearance is small; the cross section of the lower slide rail 282 is rectangular, and the sliding is smooth.

The centering shaft 2 is also provided with an in-tank operation arm 3 capable of moving along the axial direction of the centering shaft; referring to fig. 13, the in-tank working arm 3 includes a plurality of working sleeves movably sleeved in sequence, wherein the working sleeve at one end is fixed on the shaft climbing vehicle 31 and connected with a working air pressure source;

the in-tank working arm 3 is fixed on the shaft climbing vehicle 31; referring to fig. 10, an axial rack 26 is arranged on the centering shaft 2; the shaft climbing vehicle 31 is provided with a shaft climbing gear 33 which is in transmission connection with the axial rack 26; the shaft climbing gear 33 is also connected with a shaft climbing motor 34 fixed on the shaft climbing vehicle 31; two sides of the axial rack 26 are respectively provided with an axial clamping groove 27; a row of shaft climbing rollers 35 correspondingly embedded into the axial clamping grooves 27 on the side are respectively arranged on two sides of the shaft climbing vehicle 31; the climbing shaft motor 34 drives the climbing shaft vehicle 31 to move up and down along the axial direction of the centering shaft 2.

Referring to fig. 13, the inner welding mechanism includes a welding box 25 fixed to the in-tank work arm 3; an inner welding gun 253 is fixed on the welding box 25; preferably, an auxiliary light source 251 and an inner welding camera 252 are further fixed on the welding box 25;

the in-tank work arm 3 is extended to send the inner welding gun 253 to the welding position, and the operator observes and adjusts the accurate position of the inner welding gun 253 through the inner welding camera 252. The welding is done with the rotation of the tank.

Preferably, the welding box 25 is further provided with a top wall pressure lever 36 and a retraction lever 39 which are respectively positioned above and below the inner welding gun 253; the end parts of the top wall pressure lever 36 and the retraction lever 39 are both provided with top wall ball bearings; referring to fig. 14, the number of the top wall pressing rods 36 is two; a compression spring plate 255 is arranged in the welding box 25; the top wall pressure bar 36 movably penetrates through a pressure spring plate 255, and a pressure bar spring 254 is sleeved on the bar body;

the top wall pressure lever 36 abuts against the inner wall of the tank to prevent the inner welding gun 253 from hard contact with the inner wall of the tank. When welding, the operator can properly increase or decrease the air pressure in the operation arm 3 in the tank according to the requirement of actual working conditions, and finely adjust the distance between the welding gun and the welding seam, so that the welding process is met, and the qualified welding seam is formed.

After the welding operation is finished, the operation air pressure source is closed, the storage tank is lifted, and after the ball of the top wall of the retraction rod 39 contacts the arc structure part of the tank opening 103, each operation sleeve is gradually pressed back until being pulled out from the opening position.

In order to ensure the welding quality, the welding seam forming position is usually required to be cleaned in advance. As an embodiment, the number of the in-tank operation arms 3 is two, wherein one end part of the in-tank operation arms is connected with an internal welding mechanism, and the other end part of the in-tank operation arms is connected with a cleaning mechanism; the arms 3 in the two tanks are preferably at an angle of 120 °. Before welding, along with the rotation of storage tank, clean mechanism carries out the scale removal clearance to the welding seam position earlier, and later the interior mechanism of welding carries out welding operation again.

Referring to fig. 16, the cleaning mechanism includes an end cover 6 fixedly connected to an end portion of the operation sleeve located at the most end of the tank in the telescopic direction of the operation arm 3, and an inner wall brush disk 32 is arranged on the end cover 6; the reservoir rotates and the inner wall brush plate 32 sweeps dirt off the inner wall.

As an embodiment, in order to improve the cleaning effect, the inner wall brush disk 32 is fixedly connected with the rotating rod 5; referring to fig. 18, a sliding sleeve 63 is sleeved on a central position of the end cover 6; referring to fig. 19, a plurality of sliding balls 64 are uniformly arranged on the inner wall of the sliding sleeve 63; the rotating rod 5 penetrates into the sliding sleeve 63, and the outer wall of the rotating rod 5 is abutted against a sliding ball 64; the rotary rod 5 is both rotatable and slidable in its axial direction in the slip sleeve 63.

One end of the rotating rod 5 extending into the operation sleeve is provided with a rotating impeller 51, and a rod body of the rotating rod 5 is provided with a sealing ring 52; the end cover 6 is provided with a sealing groove 61 matched with the sealing ring 52, and a plurality of air outlet holes 62 are formed in the area of the sealing groove 61 of the end cover 6; the inner wall brush disc 32 is provided with brush disc balls 38;

referring to fig. 17, during the process of extending or retracting the in-can arm 3, the brush disc balls 38 of the inner wall brush disc 32 do not contact the can wall, and the sealing ring 52 is pressed down on the sealing groove 61 under the action of the internal air pressure, so that the air outlet hole 62 is closed;

referring to fig. 16, when the brush plate balls 38 of the inner wall brush plate 32 contact the tank wall, the sealing ring 52 is pushed out of the sealing groove 61, and at this time, the compressed gas in the tank work arm 3 is blown out from the gas outlet hole 62, so that the dirt swept away is blown off; meanwhile, in the process of blowing out the compressed gas, the rotating impeller 51 is also driven to rotate, so that the inner wall brush disk 32 rotates, and the cleaning effect is improved.

Referring to fig. 20, preferably, the rotating impeller 51 is uniformly and annularly provided with a plurality of arc-shaped blades 54, which have a guiding effect on the compressed air blown to the rotating impeller 51, so as to increase the rotating speed.

Preferably, the rotating rod 5 is provided with a stop ring 53 on the rod body of the in-tank working arm 3, so as to prevent the inner wall brush disk 32 from contacting the end cover 6.

Preferably, the end cover 6 is further provided with a retraction rod 39, and the retraction rod 39 forms an inclination angle of 50-60 degrees with the horizontal plane. When the in-tank working arm 3 moves to the arc part of the refrigerant tank 10, the retraction ball contacts the pipe wall first, so that each working sleeve of the in-tank working arm 3 is pressed back, and the inner wall brush disk 32 is prevented from being stressed excessively.

Preferably, the number of the retraction rods 39 is two, and the two retraction rods face upward and downward, respectively.

In conclusion, the invention provides a welding device for a tank body of a storage tank, which realizes the vertical fixation of a tank opening, a tank body and a tank bottom of the storage tank by arranging a rotary table, a clamping jaw and a pressure plate on a fixed platform. The outer welding gun capable of moving on the circular rail is arranged, so that one-time forming of an outer welding seam is realized; meanwhile, an inner welding mechanism is arranged, and after the outer welding seam is formed, the inner welding seam can be formed inside the storage tank. Welding degree of automation is high, replaces artifical operation that gets into in the jar, reduces intensity of labour, improves welding efficiency.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (8)

1. A welding device for a storage tank body is characterized by comprising a fixed platform; the fixed platform is provided with a turntable for fixing the tank opening; a flange plate is arranged on the tank opening; the turntable is also provided with a fixing component for crimping the flange plate;

two sides of the rotary table are symmetrically provided with two upright posts; the two upright posts are respectively provided with a tank body clamping jaw for fixing the tank body right above the tank opening;

a cover plate lifting cylinder is respectively arranged on the two upright posts, the telescopic parts of the two cover plate lifting cylinders are connected with the cover plate, and a rotatable pressure plate is arranged at the center of the cover plate; the pressure plate magnetically attracts the tank bottom, and the tank bottom is inverted right above the tank body;

an annular rail is fixed between the two upright posts; the annular rail is provided with a welding vehicle; a welding gun lifting adjusting cylinder is arranged on the welding vehicle, and the telescopic part of the welding gun lifting adjusting cylinder is connected with a welding gun plate; an outer welding gun is arranged on the welding gun plate; the two annular rails are respectively positioned at the upper side and the lower side of the tank body clamping jaw; the outer welding guns on the two annular rails are respectively used for forming outer welding seams at the combination parts of the tank body and the tank bottom and the tank body and the tank opening to manufacture the storage tank;

a centering lifting platform is arranged below the fixed platform, an adjusting plate is arranged on the centering lifting platform, and a centering shaft capable of extending into the storage tank is fixed on the adjusting plate; an adjusting lifting cylinder is arranged below the centering lifting platform; the top of the centering shaft is provided with a shaft top universal wheel;

the centering shaft is provided with a centering adjusting mechanism for adjusting the center of the centering shaft and the center of the storage tank to be in a superposed state;

the fixed center shaft is also provided with an internal welding mechanism, and the internal welding mechanism forms an internal welding seam at a preset position of the inner wall of the storage tank along with the rotation of the storage tank;

the centering adjustment mechanism includes: three retractable centering arms which are uniformly and annularly arranged on the centering shaft; each centering arm comprises a plurality of centering sleeves which are movably sleeved in sequence, wherein the centering sleeve at one end is fixed on the centering shaft and is connected with a centering air pressure source; the end part of the centering sleeve positioned at the tail end in the telescopic direction is provided with a centering ball;

the centering shaft is also provided with an in-tank operation arm capable of moving along the axial direction of the centering shaft; the in-tank operation arm comprises a plurality of operation sleeves which are movably sleeved in sequence, wherein the operation sleeve at one end is fixed on the shaft climbing vehicle and is connected with an operation air pressure source;

the in-tank operation arm is fixed on the shaft climbing vehicle; an axial rack is arranged on the centering shaft; the shaft climbing vehicle is provided with a shaft climbing gear which is in transmission connection with the axial rack; the shaft climbing gear is also connected with a shaft climbing motor fixed on the shaft climbing vehicle; two sides of the axial rack are respectively provided with an axial clamping groove; two sides of the shaft climbing vehicle are respectively provided with a row of shaft climbing rollers correspondingly embedded into the axial clamping grooves on the side;

the inner welding mechanism comprises a welding box fixed on the operation arm in the tank; an inner welding gun is fixed on the welding box; an auxiliary light source and an inner welding camera are also fixed on the welding box;

the welding box is also provided with a top wall pressure rod and a retraction rod which are respectively positioned above and below the inner welding gun; the end parts of the top wall pressure lever and the retraction lever are both provided with top wall balls;

two sliding strips are arranged on the bottom surface of the adjusting plate in parallel; the top and the bottom of the sliding strip are respectively provided with an upper sliding rail and a lower sliding rail; the bottom surface of the adjusting plate and the top surface of the centering lifting platform are respectively provided with an upper rail groove and a lower rail groove corresponding to the upper slide rail and the lower slide rail; the upper rail groove and the lower rail groove are vertically arranged in space.

2. The storage tank body welding device of claim 1, wherein the tank body jaws are arranged on jaw cylinders, and the jaw cylinders are fixedly arranged on the upright posts.

3. The welding device for the tank body of the storage tank as claimed in claim 1, wherein a cover plate transverse rail is respectively arranged on the two upright columns; and a cover plate moving vehicle is arranged on the cover plate transverse moving rail, and the cover plate lifting cylinder is fixed on the cover plate moving vehicle.

4. The storage tank body welding device according to claim 1, wherein the outer welding gun is slidably arranged on a welding gun plate, a welding gun horizontal adjusting cylinder is further arranged on the welding gun plate, and the welding gun horizontal adjusting cylinder is connected with the outer welding gun.

5. The storage tank body welding device according to claim 1, characterized in that the turntable is arranged on a fixed platform through a rotary support; the fixed cover in the outside of carousel is equipped with the carousel ring gear, carousel ring gear transmission connects the carousel gear, carousel gear connection carousel motor.

6. The storage tank canister welding apparatus of claim 1, wherein there are two top wall pressure levers; a compression spring plate is arranged in the welding box; the top wall pressure bar movably penetrates through the pressure spring plate, and the rod body is sleeved with the pressure spring.

7. The tank body welding device of claim 1, wherein the number of the in-tank working arms is two, one end of the in-tank working arm is connected with the inner welding mechanism, and the other end of the in-tank working arm is connected with the cleaning mechanism; the cleaning mechanism comprises an end cover fixedly connected to the end part of the operation sleeve located at the tail end of the tank in the telescopic direction of the operation arm, and an inner wall brush disc is arranged on the end cover.

8. The tank body welding device for the storage tank according to claim 7, wherein the inner wall brush disc is fixedly connected with a rotating rod; a sliding sleeve is sleeved at the center of the end cover; a plurality of sliding balls are uniformly arranged on the inner wall of the sliding sleeve; the rotating rod penetrates into the sliding sleeve, and the outer wall of the rotating rod is abutted to the sliding ball;

one end of the rotating rod, which extends into the operation sleeve, is provided with a rotating impeller, and the rod body of the rotating rod is provided with a sealing ring; the end cover is provided with a sealing groove matched with the sealing ring, and a plurality of air outlet holes are formed in the area of the sealing groove of the end cover; and brush disc balls are arranged on the inner wall brush disc.

Images