CN212552544U

CN212552544U - Cylinder welding device

Info

Publication number: CN212552544U
Application number: CN202021423766.8U
Authority: CN
Inventors: 高永红
Original assignee: Chizhou Dete Mechanical And Electrical Equipment Co ltd
Current assignee: Chizhou Dete Mechanical And Electrical Equipment Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-02-19
Anticipated expiration: 2030-07-20

Abstract

The utility model discloses a drum welding set, including bottom plate one and bottom plate two, bottom plate one and two end to end connections of bottom plate, bottom plate one welds with the one end that two bottom plates are close to each other, and bottom plate one all welds the fixing base with the one end that two bottom plates kept away from each other, and bottom plate one all is equipped with the supporting leg with four angular position departments of two bottoms of bottom plate, the top of bottom plate one is equipped with the lift seat, the lift seat is "T" font, pneumatic cylinder one is all installed at bottom plate top of four angular position departments below of lift seat. The utility model discloses a cover is equipped with demountable installation's fixed cover outside the drum to be equipped with at the bottom plate upper surface with fixed cover matched with draw-in groove, utilize fixed cover to carry out the pre-fixing to the drum, make fixed cover after the installation form a whole with the drum, change the glossy shape of drum outward appearance, be convenient for control, cooperate with the draw-in groove and be convenient for roll the direction, promote welding precision, increase the security among the roll welding process.

Description

Cylinder welding device

Technical Field

The utility model relates to a metal welding technical field specifically is a drum welding set.

Background

The traditional welding of the cylinder mainly comprises the steps of placing the cylinder welding frame on a floor, then placing the cylinder on a welding roller frame for welding, wherein the welding roller frame is a common welding auxiliary device and is widely applied in the welding production process, the cylinder welding piece is driven to rotate mainly by means of friction force between the welding piece and a driving roller, and the cylinder welding piece is combined with a welding manipulator, a welding positioner and the like to realize automatic welding of inner and outer circumferential seams, fillet seams and inner and outer longitudinal seams of the welding piece.

At present, it is troublesome that current drum welding set not only adjusts welding seam welding position at the welded in-process, and the gyro wheel that sets up on the drum welding frame all easily takes place to rotate owing to the shape of drum and the position that will adjust the drum, lead to often leading to the drum to remove because of the effect of external force, and then make the welding seam produce the displacement, drum welding in-process unloading all is comparatively troublesome, place after aiming at the welding gyro wheel frame, requirement to the welding gyro wheel frame is higher, easily cause collision damage to the welding gyro wheel frame, it is complicated to go up unloading, the troublesome welding efficiency that leads to of welding seam adjustment is lower, for this reason, we utility model one kind can roll and be convenient for carry out the high-efficient drum welding set of concatenation operation in the horizontal direction.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drum welding set to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a cylinder welding device comprises a first bottom plate and a second bottom plate, wherein the first bottom plate is connected with the second bottom plate end to end, the first bottom plate is welded with one end, close to the second bottom plate, of the second bottom plate, a fixing seat is welded with one end, far away from the first bottom plate, of the first bottom plate, supporting legs are arranged at four corners of the bottom of the first bottom plate and the bottom of the second bottom plate, a lifting seat is arranged at the top of the first bottom plate and is T-shaped, a first hydraulic cylinder is arranged at the top of the first bottom plate below the four corners of the lifting seat, the output end of the first hydraulic cylinder is connected with four corner positions at the bottom of the lifting seat, a sliding groove is formed in the top of the second bottom plate, a translation seat is arranged at the top of the second bottom plate at the sliding groove, a groove is formed in the bottom of the translation seat, a sliding block matched with the sliding, the bottom end of the supporting wheel is in contact with the upper surface of the second bottom plate, a second hydraulic cylinder is mounted on one side, close to the translation seat, of the outer side wall of a fixed seat at the second bottom plate, the output end of the second hydraulic cylinder is connected with the translation seat, a first cylinder is placed at the top of the translation seat, a second cylinder is placed at the top of the lifting seat, a connecting seat is arranged at the top of the fixed seat, a pair of guide plates are vertically welded at the bottom end of the connecting seat, a guide groove matched with the guide plates is formed in the top of the fixed seat, a mounting groove is formed in the middle of the top of the fixed seat, a third hydraulic cylinder is mounted in the mounting groove, the output end of the third hydraulic cylinder is connected with the connecting seat, the guide plates are U-shaped and vertically and upwards arranged, a movable groove is formed in the top end and the bottom end of the movable groove, a sliding hole matched with the first sliding rod penetrates through the sliding seat, a fourth hydraulic cylinder is installed on one side of the top of the connecting seat and is horizontally arranged in parallel with the connecting seat, the output end of the fourth hydraulic cylinder is connected with the sliding seat, fixing rods are vertically inserted into the sliding seat, a through hole is formed in the sliding seat at the position of the fixing rods, an annular sliding rail is arranged inside the through hole, a connecting block is arranged inside the through hole, a fixing ring is arranged on the outer side of the connecting block and is positioned inside the annular sliding rail, the fixing rods are inserted into the connecting block, slots matched with the fixing rods are formed in the connecting block, the slots and the fixing rods are square, cavities are formed in the fixing rods at the positions of the first bottom plate and the second bottom plate, close to one end, cavities are formed in the inner parts of the fixing rods, a first screw rod is, the one end that the inside screw rod of both ends dead lever was kept away from each other all runs through the dead lever and extends to the dead lever outside, the dead lever inside of cavity one side be equipped with a screw rod matched with jack, and the one end that the screw rod extended to the dead lever outside all is equipped with rotatory handle, the dead lever is close to the equidistant articulated root connecting rod that has of one end of cavity, a screw rod outside cover at cavity position is equipped with the swivel nut, it has the hinge bar to articulate between swivel nut and the connecting rod, is equipped with on the dead lever with hinge bar matched with logical groove, and the one end that the dead lever was kept away from.

Preferably, a fixed groove is arranged at the top of the first bottom plate close to one side of the second bottom plate of the lifting seat, a motor is arranged at one side of the bottom end in the fixed groove, a second screw rod is arranged at the output end of the motor, two parallel slide rods are arranged in the fixed groove above the second screw rod, a moving platform is sleeved between the outer sides of the two slide rods on two sides, slide holes matched with the slide rods are arranged at two sides of the bottom end of the moving platform, a sleeve is arranged at the bottom of the moving platform and sleeved outside the second screw rod, an inner thread hole matched with the screw rod is arranged on the sleeve, a baffle is welded at one end of the top of the moving platform, an electric telescopic rod is horizontally arranged on the baffle and is arranged perpendicular to the second screw rod, a mounting plate is connected to the top end of the moving platform on one side of the baffle in a sliding manner, and the output end of the electric telescopic rod is connected with the mounting plate.

Preferably, cylinder two all overlaps with the outside at a cylinder both ends and is equipped with two sets of fixed covers, is located two fixed covers of same end and mutually supports, and fixed cover is the semicircle arcuation, and the border position department at fixed cover lateral wall both ends all welds the connecting plate, is located to fix mutually through the bolt between two connecting plates of same end, and the welding has the guide vane on the lateral wall of fixed cover, and is equipped with the rubber slipmat on the inside wall of fixed cover, the translation seat all is equipped with two draw-in grooves that are parallel to each other with the top of lift seat, draw-in groove and fixed cover and guide vane looks adaptation, and the thickness sum of fixed cover and guide vane is unanimous with the.

Preferably, the length of the lifting seat and the length of the translation seat are both larger than the perimeter of the cylinder I or the cylinder II.

Compared with the prior art, the beneficial effects of the utility model are that:

1: the utility model discloses a place the drum and weld on bottom plate one and bottom plate two, and be equipped with lift seat and translation seat on bottom plate one and bottom plate two respectively, planar bottom plate conveniently places treats welded drum, the drum of arc lateral wall is little with the planar bottom plate area of contact, easily treat welded drum and remove the operation, increase drum welded controllability, increase work efficiency, carry out the height between drum welded in-process usable lift seat adjustment drum one and drum two, be convenient for weld two drums of diameter variation in size that are the echelonment after the concatenation and use, usable translation seat removes the clearance between adjustment drum one and the drum two, and is simple in operation convenient, and wide in use range, increase welding efficiency.

2: the utility model discloses an install the welding machine on the moving platform to use screw rod and electric telescopic handle to drive moving platform and welding machine respectively and remove, make the welding machine can carry out the effect that arbitrary position removed on the level, can be to the position of the position adjustment welding machine soldered connection of welding seam, easy operation is convenient, and it can weld the welding seam position wholly automatically to roll to cooperate with the drum, promotes welding efficiency.

3: the utility model discloses a be equipped with the dead lever, and the connecting rod position on the dead lever articulates there is the stripper bar, be convenient for utilize the dead lever to carry out the centre gripping to the drum on the one hand fixed, utilize behind the dead lever pull to fix it by the inboard of drum, fixed convenient to use makes the drum be difficult for coming off and sliding, the safety in utilization increases, the point contact that the use of stripper bar will be originally the connecting rod is fixed to be changed into the face contact fixed, fixed effect is better, and great to the diameter, the drum use that the thickness end is lower can also play the effect of supporting anti-deformation from inside to outside.

4: the utility model discloses a cover is equipped with demountable installation's fixed cover outside the drum to be equipped with at the bottom plate upper surface with fixed cover matched with draw-in groove, utilize fixed cover to carry out the pre-fixing to the drum, make fixed cover after the installation form a whole with the drum, change the glossy shape of drum outward appearance, be convenient for control, cooperate with the draw-in groove and be convenient for roll the direction, promote welding precision, increase the security among the roll welding process.

Drawings

Fig. 1 is a schematic front view of the internal structure of the present invention;

FIG. 2 is a schematic view of an enlarged internal structure of a bottom plate of the present invention;

FIG. 3 is a schematic view of the enlarged structure of the bottom plate of the present invention;

FIG. 4 is a schematic view of the internal structure of a side of the cylinder of the present invention;

FIG. 5 is a schematic view of the fixing rod of the present invention;

FIG. 6 is a schematic view of the internal structure of the slide base;

fig. 7 is a schematic view of the internal enlarged structure of the fixing seat of the present invention.

In the figure: 1. a fourth hydraulic cylinder; 2. a slide base; 3. fixing the rod; 4. a first cylinder; 5. a cylinder II; 6. fixing a sleeve; 7. a movable groove; 8. a connecting seat; 9. a fixed seat; 10. supporting legs; 11. a first hydraulic cylinder; 12. A first bottom plate; 13. a lifting seat; 14. a support wheel; 15. a translation seat; 16. a slider; 17. a chute; 18. A second bottom plate; 19. a hydraulic cylinder III; 20. a second hydraulic cylinder; 21. a first sliding rod; 22. welding machine; 23. an electric telescopic rod; 24. a baffle plate; 25. mounting a plate; 26. a second screw; 27. a card slot; 28. a motor; 29. Fixing grooves; 30. a sleeve; 31. a mobile station; 32. a second sliding rod; 33. a slideway; 34. a slide bar; 35. A groove; 36. a cavity; 37. a first screw rod; 38. a threaded sleeve; 39. an extrusion stem; 40. a connecting rod; 41. A hinged lever; 42. a through groove; 43. rotating the handle; 44. mounting grooves; 45. a guide groove; 46. a guide piece; 47. an annular slide rail; 48. a guide plate; 49. a connecting plate; 50. a rubber non-slip mat; 51. a fixing ring; 52. a slot; 53. a through hole; 54. and (4) connecting the blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides an embodiment: a cylinder welding device comprises a first bottom plate 12 and a second bottom plate 18, wherein the first bottom plate 12 is connected with the second bottom plate 18 end to end, one end, close to the first bottom plate 12, of the second bottom plate 18 is welded, a fixed seat 9 is welded at one end, far away from the first bottom plate 12 and the second bottom plate 18, supporting legs 10 are arranged at four corners of the bottom of the first bottom plate 12 and the second bottom plate 18, a lifting seat 13 is arranged at the top of the first bottom plate 12, the lifting seat 13 is T-shaped, a first hydraulic cylinder 11 is arranged at the top of the first bottom plate 12 below the four corners of the lifting seat 13, the output end of the first hydraulic cylinder 11 is connected with the four corners of the bottom of the lifting seat 13, a sliding groove 17 is arranged at the top of the second bottom plate 18, a translation seat 15 is arranged at the top of the second bottom plate 18 at the sliding groove 17, a groove 35 is arranged at the, the bottom of the translation seat 15 at two sides of the sliding block 16 is uniformly provided with the supporting wheels 14 at equal intervals, the bottom ends of the supporting wheels 14 are contacted with the upper surface of the second bottom plate 18, the outer side wall of the fixed seat 9 at the position of the second bottom plate 18 is provided with the second hydraulic cylinder 20 at the side close to the translation seat 15, the output end of the second hydraulic cylinder 20 is connected with the translation seat 15, the top of the first bottom plate 12 at the side close to the second bottom plate 18 of the lifting seat 13 is provided with a fixed groove 29, one side of the bottom end in the fixed groove 29 is provided with a motor 28, the output end of the motor 28 is provided with a second screw rod 26, the fixed groove 29 above the second screw rod 26 is internally provided with two parallel slide rod pairs 32, a movable platform 31 is sleeved between the outer sides of the two slide rod pairs 32 at two sides of the bottom end of the movable platform 31, the bottom of the, the one end welding at the top of mobile station 31 has baffle 24, install electric telescopic handle 23 on the baffle 24 level, electric telescopic handle 23 is perpendicular to screw rod two 26 and arranges, the top of mobile station 31 of baffle 24 one side has mounting panel 25 of sliding connection, the bottom of mounting panel 25 is equipped with draw runner 34, the upper surface of mobile station 31 is equipped with slide 33 with draw runner 34 matched with, the top of mounting panel 25 is installed welding machine 22, and the output of electric telescopic handle 23 is connected with mounting panel 25, cylinder one 4 is placed at the top of translation seat 15, cylinder two 5 is placed at the top of lift seat 13, the length of lift seat 13 and translation seat 15 is all greater than the girth of cylinder one 4 or cylinder two 5, the outside of cylinder two 5 and cylinder one 4 both ends is all overlapped with two sets of fixed cover 6, two fixed covers 6 that are located same end cooperate each other, fixed cover 6 is the semicircle arc, the edge position department welding at fixed cover 6, two connecting plates 49 positioned at the same end are fixed through bolts, a guide sheet 46 is welded on the outer side wall of the fixed sleeve 6, a rubber anti-skid pad 50 is arranged on the inner side wall of the fixed sleeve 6, two clamping grooves 27 which are parallel to each other are arranged at the tops of the translation seat 15 and the lifting seat 13, the clamping grooves 27 are matched with the fixed sleeve 6 and the guide sheet 46, the sum of the thicknesses of the fixed sleeve 6 and the guide sheet 46 is consistent with the depth of the clamping grooves 27, a connecting seat 8 is arranged at the top of the fixed seat 9, a pair of guide plates 48 are vertically welded at the bottom end of the connecting seat 8, a guide groove 45 matched with the guide plates 48 is arranged at the top of the fixed seat 9, a mounting groove 44 is arranged at the middle position of the top of the fixed seat 9, a hydraulic cylinder three 19 is arranged inside the mounting groove 44, the output end of the hydraulic cylinder three 19 is connected with the connecting, the upper end and the lower end inside the movable groove 7 are both provided with a first slide rod 21, a slide seat 2 is sleeved between the outer sides of the two first slide rods 21 at the position of the movable groove 7, a slide hole matched with the first slide rod 21 penetrates through the slide seat 2, one side of the top of the connecting seat 8 is provided with a hydraulic cylinder four 1, the hydraulic cylinder four 1 is horizontally arranged in parallel with the connecting seat 8, the output end of the hydraulic cylinder four 1 is connected with the slide seat 2, a fixed rod 3 is vertically inserted in the slide seat 2 at the position of the fixed rod 3, a through hole 53 is arranged on the slide seat 2 at the position of the fixed rod 3, an annular slide rail 47 is arranged inside the through hole 53, a connecting block 54 is arranged inside the through hole 53, a fixing ring 51 is arranged outside the connecting block 54, the fixing ring 51 is positioned inside the annular slide rail 47, the fixed rod 3 is inserted in the connecting block 54, a slot 52 matched with the fixed rod 3 is arranged, the inside interlude of dead lever 3 has screw rod 37, install through the bearing between screw rod 37 and the cavity 36, the inside one end that screw rod 37 kept away from each other of both ends dead lever 3 all runs through dead lever 3 and extends to the dead lever 3 outside, the inside jack with screw rod 37 matched with that is equipped with of dead lever 3 of cavity 36 one side, and the one end that screw rod 37 extends to the dead lever 3 outside all is equipped with rotatory handle 43, the equidistant articulated 3 connecting rods 40 that have of one end that the dead lever 3 is close to cavity 36, the outside cover of screw rod 37 at cavity 36 position is equipped with swivel nut 38, it has articulated rod 41 to articulate between swivel nut 38 and the connecting rod 40, be equipped with the logical groove 42 with articulated rod 41 matched with on the dead lever 3, and the one end that dead lever 3 was kept away from.

The working principle is as follows: when the welding machine is used, the external power supply and the hydraulic pump are connected, the fixing sleeve 6 matched with the cylinder I4 and the cylinder II 5 is selected for fixing, the rotating handle 43 is rotated to shrink the connecting rod 40 and the extrusion rod 39, the fixing rod 3 is slid to be in a shrinking state, the fixing sleeves 6 on the cylinder I4 and the cylinder II 5 to be welded are aligned to the clamping groove 27 and then are respectively placed on the upper surfaces of the bottom plate II 18 and the bottom plate I12, the hydraulic cylinder II 20 is used for telescopically adjusting the gap between the cylinder I4 and the cylinder II 5, when the cylinder I4 and the cylinder II 5 are in shapes with different diameters, the height difference between the cylinder I4 and the cylinder II 5 can be adjusted by the hydraulic cylinder 11, the height of the cylinder I4 and the cylinder II 5 is ensured to be consistent, the height of the fixing rod 3 is telescopically adjusted by the hydraulic cylinder III 19, the position of the fixing rod 3 is telescopically adjusted, the fixing rods 3 at two ends are extruded to extend to the inner sides of the first cylinder 4 and the second cylinder 5, the rotating handle 43 is rotated to drive the extruding rod 39 to expand, the inner wall of the cylinder is extruded to be fixed after expansion, the sliding seat 2 can be driven to slide by the telescopic of the hydraulic cylinder four 1 after fixation is finished, the first cylinder 4 and the second cylinder 5 are driven to simultaneously roll on the upper surface of the bottom plate under the guidance of the clamping groove 27 and the fixing rods 3, the moving platform 31 is driven by the motor 28 to move according to the position of a welding seam of the first cylinder 4 and the second cylinder 5 to adjust the position of the welding machine 22, the welding head on the welding machine 22 is aligned to the welding seam, the welding machine 22 is driven to move along with the rolling of the first cylinder 4 and the second cylinder 5 by the telescopic of the electric telescopic rod 23, the welding seam is always aligned to the welding seam, the welding of the cylinder, and finishing blanking.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A cylinder welding device is characterized in that: the lifting device comprises a first bottom plate (12) and a second bottom plate (18), wherein the first bottom plate (12) and the second bottom plate (18) are connected end to end, one end, close to each other, of the first bottom plate (12) and the second bottom plate (18) are welded, a fixing seat (9) is welded at one end, far away from each other, of the first bottom plate (12) and the second bottom plate (18), supporting legs (10) are arranged at the positions of four corners of the bottoms of the first bottom plate (12) and the second bottom plate (18), a lifting seat (13) is arranged at the top of the first bottom plate (12) at the positions of the four corners of the first bottom plate (12), the lifting seat (13) is in a T shape, a first hydraulic cylinder (11) is arranged at the top of the first bottom plate (12) below the positions of the four corners of the lifting seat (13), the output end of the first hydraulic cylinder (11) is connected with the positions of the four corners of the bottom end of the lifting seat, the bottom of the translation seat (15) is provided with a groove (35), the middle position of the groove (35) is provided with a sliding block (16) matched with the sliding groove (17), the bottoms of the translation seats (15) at the two sides of the sliding block (16) are all uniformly provided with supporting wheels (14) at equal intervals, the bottom ends of the supporting wheels (14) are in contact with the upper surface of the second bottom plate (18), the outer side wall of a fixing seat (9) at the position of the second bottom plate (18) is provided with a second hydraulic cylinder (20) close to one side of the translation seat (15), the output end of the second hydraulic cylinder (20) is connected with the translation seat (15), the top of the translation seat (15) is provided with a first cylinder (4), the top of the lifting seat (13) is provided with a second cylinder (5), the top of the fixing seat (9) is provided with a connecting seat (8), and the bottom, the top of fixing base (9) is equipped with guide way (45) with deflector (48) matched with, the intermediate position department at fixing base (9) top is equipped with mounting groove (44), the internally mounted of mounting groove (44) has pneumatic cylinder three (19), the output of pneumatic cylinder three (19) is connected with connecting seat (8), deflector (48) are "U" shape and vertical upwards arrange, the top of deflector (48) forms movable groove (7), the inside upper and lower end in movable groove (7) all is equipped with slide bar one (21), the cover is equipped with slide (2) between the outside of two slide bar one (21) at movable groove (7) position, run through on slide (2) have with slide bar one (21) matched with slide hole, pneumatic cylinder four (1) are all installed to one side at connecting seat (8) top, pneumatic cylinder four (1) are on a parallel with connecting seat (8) horizontal arrangement, the output end of the hydraulic cylinder IV (1) is connected with the sliding seat (2), fixing rods (3) are vertically inserted into the sliding seat (2), through holes (53) are formed in the sliding seat (2) at the positions of the fixing rods (3), annular sliding rails (47) are arranged inside the through holes (53), connecting blocks (54) are arranged inside the through holes (53), fixing rings (51) are arranged on the outer sides of the connecting blocks (54), the fixing rings (51) are located on the inner sides of the annular sliding rails (47), the fixing rods (3) are inserted into the connecting blocks (54), slots (52) matched with the fixing rods (3) are formed in the connecting blocks (54), the slots (52) and the fixing rods (3) are square, cavities (36) are formed in the positions of the first base plate (12) and the second base plate (18), the fixing rods (3) are close to one end of each other, and first screw rods (37) are inserted into the fixing rods (3), the screw rod I (37) and the cavity (36) are installed through a bearing, one end, far away from each other, of the screw rod I (37) in the fixing rods (3) at the two ends penetrates through the fixing rods (3) and extends to the outer side of the fixing rods (3), the fixing rods (3) at one side of the cavity (36) are internally provided with jacks matched with the screw rod I (37), and one end of the screw rod I (37) extending to the outer side of the fixed rod (3) is provided with a rotating handle (43), one end of the fixed rod (3) close to the cavity (36) is hinged with 3 connecting rods (40) at equal intervals, a threaded sleeve (38) is sleeved outside the first screw rod (37) at the position of the cavity (36), a hinged rod (41) is hinged between the threaded sleeve (38) and the connecting rod (40), a through groove (42) matched with the hinged rod (41) is arranged on the fixed rod (3), and one end of the connecting rod (40) far away from the fixed rod (3) is hinged with an extrusion rod (39).

2. A cylinder welding apparatus as defined in claim 1, wherein: a fixing groove (29) is formed in the top of a first bottom plate (12) on one side, close to a second bottom plate (18), of the lifting seat (13), a motor (28) is installed on one side of the bottom end inside the fixing groove (29), a second screw rod (26) is installed at the output end of the motor (28), two parallel sliding rods (32) are arranged inside the fixing groove (29) above the second screw rod (26), a moving platform (31) is sleeved between the outer sides of the two sliding rods (32) on the two sides, sliding holes matched with the sliding rods (32) are formed in the two sides of the bottom end of the moving platform (31), a sleeve (30) is arranged at the bottom of the moving platform (31), the sleeve (30) is sleeved on the outer side of the second screw rod (26), an internal threaded hole matched with the second screw rod (26) is formed in the sleeve (30), a baffle (24) is welded at one end of the top of, electric telescopic handle (23) perpendicular to screw rod two (26) are arranged, and moving platform (31) top sliding connection of baffle (24) one side has mounting panel (25), and the bottom of mounting panel (25) is equipped with draw runner (34), and moving platform (31) upper surface is equipped with slide (33) with draw runner (34) matched with, and welding machine (22) are installed at the top of mounting panel (25), and the output of electric telescopic handle (23) is connected with mounting panel (25).

3. A cylinder welding apparatus as defined in claim 1, wherein: the outside at two (5) of drum and drum (4) both ends all is equipped with two sets of fixed covers (6), is located two fixed covers (6) of same end and mutually supports, and fixed cover (6) are the semicircle arc, and the border position department at fixed cover (6) lateral wall both ends all welds connecting plate (49), is located and fixes mutually through the bolt between two connecting plates (49) of same end, and the welding has direction piece (46) on the lateral wall of fixed cover (6), and is equipped with rubber slipmat (50) on the inside wall of fixed cover (6), translation seat (15) all are equipped with two draw-in grooves (27) that are parallel to each other with the top of lift seat (13), draw-in groove (27) and fixed cover (6) and direction piece (46) looks adaptation, and the thickness sum of fixed cover (6) and direction piece (46) is unanimous with the degree of depth size of draw-in.

4. A cylinder welding apparatus as defined in claim 1, wherein: the lengths of the lifting seat (13) and the translation seat (15) are both larger than the perimeter of the cylinder I (4) or the cylinder II (5).