CN218556146U

CN218556146U - Auxiliary clamping device for welding steel pipes

Info

Publication number: CN218556146U
Application number: CN202222970372.XU
Authority: CN
Inventors: 祝传魁
Original assignee: Heze Social Insurance Service Center
Current assignee: Heze Social Insurance Service Center
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-03-03
Anticipated expiration: 2032-11-08

Abstract

The utility model discloses an auxiliary clamping device for welding steel pipes, which comprises a first base, a second base, a transverse adjusting component, a longitudinal adjusting component, a clamping component, a fixed frame and a folding fixing component, wherein the transverse adjusting component is arranged at the top of the first base; the utility model has convenient storage and transportation, and can be finely adjusted by the longitudinal adjusting component if the longitudinal dislocation of two sections of steel pipes is poor in the welding process, so that the ports of the two sections of steel pipes are in tight butt joint, thereby facilitating the welding of subsequent workers, and having stable connection and good welding effect; the arrangement of the transverse adjusting assembly enables the device to be suitable for welding steel pipes with different lengths, the adjustment is convenient, and the practicability is high.

Description

Auxiliary clamping device for welding steel pipes

Technical Field

The application relates to the technical field of machining, especially, relate to a pipe welding is with supplementary clamping device.

Background

The steel pipe has a hollow section, the length of the steel pipe is far longer than the diameter or the circumference of the steel pipe, and the steel pipe is divided into a carbon structural steel pipe, a low alloy structural steel pipe, an alloy steel pipe and a composite steel pipe according to the material quality; the steel pipes are classified into steel pipes for conveying pipelines, engineering structures, thermal equipment, petrochemical industry, machine manufacturing, geological drilling, high-pressure equipment and the like according to the application.

As the demand for steel pipes increases, the production processes and techniques for steel pipes are gradually being updated and improved. The steel pipe clamp is used for positioning and clamping, and has the effects of ensuring that the steel pipe stably and reliably reaches the machining precision, shortening the machining working hours, reducing the production cost and the like.

The Chinese utility model patent with the patent application number of 202123149216.9 discloses clamping equipment for welding steel pipes, which comprises a supporting mechanism, wherein the upper end of the supporting mechanism is fixedly connected with a slide rail table, the upper end of the slide rail table is connected with two slide blocks in a sliding manner, and the upper ends of the slide blocks are fixedly provided with fixed clamping devices; the fixed clamping device comprises an angle adjusting mechanism, a connecting plate, a first clamping plate, a first connecting plate and a limiting mechanism, the lower end of the angle adjusting mechanism is fixedly connected with the sliding block, the upper end of the angle adjusting mechanism is fixedly connected with the first connecting plate, the upper end of the first connecting plate is fixedly connected with the first clamping plate, and one side of the first connecting plate is fixedly connected with the connecting plate. A centre gripping equipment for steel pipe welding, be equipped with fixed clamping device, can be after welding the one end of steel pipe, convenient angle to the steel pipe carries out rotation regulation, can weld the other end of steel pipe after adjusting, bring better use prospect.

When the equipment is used for a long time, when the equipment clamps, fixes and butts the steel pipes, the two buttressed steel pipes have some dislocation errors, and at the moment, longitudinal adjustment is difficult to carry out due to clamping and fixing, so that the welding effect of the steel pipes is poor; in addition, the prior device is a whole and is inconvenient to store.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is: the utility model provides a pipe welding is with supplementary clamping device solves present equipment and appears the error in the steel pipe butt joint and be difficult to adjust and lead to the poor and inconvenient problem of accomodating of equipment of pipe welding's effect.

The technical scheme of the utility model is that: an auxiliary clamping device for welding a steel pipe comprises a first base, a second base, a transverse adjusting assembly, a longitudinal adjusting assembly, a clamping assembly, a fixing frame and a folding fixing assembly, wherein the transverse adjusting assembly is arranged at the top of the first base, the fixing frame is arranged at the top of the second base, the longitudinal adjusting assembly and the clamping assembly are taken as one group, the two groups are two groups, one group is arranged on the longitudinal adjusting assembly, the other group is arranged on the fixing frame, and the folding fixing assembly is arranged between the first base and the second base;

the vertical adjustment subassembly includes carrier block, movable block, horizontal pole, rack, pivot and gear, the horizontal pole sets up inside the carrier block, movable block and horizontal pole sliding fit, the rack sets up the both sides at the movable block, the outer wall of pivot is provided with the gear, gear and rack toothing.

As the utility model provides a steel pipe welding is with supplementary clamping device a preferred embodiment, the horizontal pole is horizontal inside the carrier block, its both ends and carrier block inner wall fixed connection, rectangular spout has been seted up on the movable block, the movable block is through rectangular spout and horizontal pole sliding fit, a terminal surface of movable block is provided with the scale, the top of movable block is provided with the centre gripping subassembly, the bottom of carrier block is provided with the lateral adjustment subassembly.

The utility model provides a steel pipe welding is with supplementary clamping device a preferred embodiment, the gear quantity that sets up in the pivot is two and corresponds the meshing with the rack, the one end outer wall of pivot is provided with the driven plate, a terminal surface that the driven plate is close to the carrier block is provided with the fixture block, a terminal surface that the carrier block corresponds with the driven plate is provided with the draw-in groove that a plurality of is circumference array setting, fixture block and draw-in groove joint cooperation, the outer wall of pivot is provided with first spring, the one end of pivot is provided with spacing piece, the one end and the driven plate contact of first spring, the other end and spacing piece contact.

As the utility model provides a steel pipe welding is with supplementary clamping device a preferred embodiment, the outer terminal surface of driven plate is provided with the connecting rod that a plurality of centrosymmetry set up, the one end of connecting rod is provided with rotatory ring.

As the utility model provides a steel pipe welding is with supplementary clamping device a preferred embodiment, the outer wall spraying of rotatory ring has anti-skidding coating.

When the steel pipe welding is carried out, two sections of steel pipes need to be clamped and butted through the clamping assembly, the longitudinal dislocation is finely adjusted through the longitudinal adjusting assembly, the ports of the two sections of steel pipes are in tight butt joint, welding of follow-up workers is facilitated, connection is stable, and the welding effect is good.

Because two gears on the rotating shaft are meshed with the racks, a worker controls the longitudinal movement of the movable block while rotating the rotating ring, scales are arranged at one end of the movable block, the sight of the worker is flush with the scales, the positions of the scales, which coincide with the top of the bearing block, are observed to judge the positions of the movable block, the numbers of the scales of the two groups of longitudinal adjusting assemblies are adjusted to be the same, and meanwhile, the horizontal positions of the outer walls of the two sections of steel pipes are observed to be determined to be a straight line, namely the optimal position for welding the two sections of steel pipes.

Wherein, the staff need earlier rotatory ring backward pulling when rotatory ring is adjusted in the rotating, makes the fixture block of rotatory ring terminal surface break away from the draw-in groove restriction, then rotates again, and the adjustment accomplish after loosen rotatory ring can, the driven plate can kick-back under the effect of first spring to through the joint restriction gear rotation of fixture block and draw-in groove. In addition, the outer wall of the rotating ring is sprayed with the anti-skidding coating so as to increase the static friction between the hands of workers and the rotating ring and avoid skidding.

As the utility model provides a steel pipe welding is with supplementary clamping device a preferred embodiment, the centre gripping subassembly is including setting up at the solid fixed ring at movable block top and setting up two dead slot pieces on solid fixed ring, and two dead slot piece symmetries set up, the inside slip of dead slot piece is provided with the pull rod, the one end of pull rod is provided with the centre gripping arc piece, and the other end is provided with the handle, the outer wall of pull rod is provided with the second spring, the inner wall of centre gripping arc piece is provided with the slipmat.

The structure of the clamping assembly is suitable for steel pipes with different apertures, and the clamping assembly is simple in structure, convenient to operate and stable in clamping. When clamping is carried out, a worker needs to pull the handles at two sides to separate the opposite clamping arc blocks, penetrate the steel pipe through the fixing ring and loosen the handles, and the clamping arc blocks can provide clamping force for the steel pipe under the action of the second spring; the anti-slip pad is used for increasing the static friction force between the clamping arc block and the steel pipe and avoiding the steel pipe from sliding.

As the utility model provides a steel pipe welding is with supplementary clamping device a preferred embodiment, first base includes first bottom plate and sets up the first riser in first bottom plate both sides, the second base includes the second bottom plate and sets up the second riser in second bottom plate both sides, the one side that first riser is relative with the second riser is provided with the rotation hinge, the horizontal adjustment subassembly sets up the top at first bottom plate, the mount sets up the top at the second bottom plate.

The utility model provides a steel pipe welding is with supplementary clamping device a preferred embodiment, the horizontal adjustment subassembly including set up at the driving motor at first bottom plate top and with the lead screw of driving motor output shaft key-type connection, the one end and the first riser of lead screw rotate to be connected, the lead screw outer wall is provided with the driven piece, the both sides of driven piece are provided with the mounting bracket, the through-hole has been seted up on the mounting bracket, be provided with the gag lever post in the through-hole, the both ends and the first riser fixed connection of gag lever post, the top of driven piece is provided with vertical adjustment subassembly.

The arrangement of the transverse adjusting component enables the device to be suitable for welding steel pipes with different lengths. If a welded section of steel pipe is longer, the drive motor can be started to adjust the positions of the longitudinal adjusting assembly and the clamping assembly on the driven block, so that the driven block is close to the position of the drive motor, otherwise, the driven block is far away from the position of the drive motor, the adjustment is convenient, and the practicability is high.

As the utility model provides a steel pipe welding is with supplementary clamping device a preferred embodiment, folding fixed subassembly is including the installation to post, bolt and rectangular magnetic path, the installation is to the one end and the starting stave fixed connection of post, and the other end and the contact of second riser, all seted up the screw thread through-hole on the installation is to post, starting stave, the second riser, the bolt connects in the screw thread through-hole soon, the same one side of starting stave, second bottom plate and starting stave, second riser is provided with rectangular magnetic path.

When carrying out accomodating of equipment, twist earlier and move the bolt and make first riser and second riser separation, use the hinge to rotate folding as the axle afterwards to make the rectangular magnetic path of first bottom plate, first riser one side and the rectangular magnetic path of second bottom plate, second riser one side adsorb fixedly, make things convenient for equipment to accomodate from this and transport.

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

the utility model has convenient storage and transportation, and can be finely adjusted by the longitudinal adjusting component if the longitudinal dislocation of two sections of steel pipes is poor in the welding process, so that the ports of the two sections of steel pipes are in tight butt joint, thereby facilitating the welding of subsequent workers, and having stable connection and good welding effect; the arrangement of the transverse adjusting assembly enables the device to be suitable for welding steel pipes with different lengths, the adjustment is convenient, and the practicability is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the structure of the three-dimensional viewing angle of the present invention;

fig. 2 is a schematic structural view of the position of a in the drawing of the present invention;

FIG. 3 is an enlarged view of the position A in FIG. 2;

fig. 4 is a schematic structural diagram of the position B of the present invention;

FIG. 5 is an enlarged view of the position B in FIG. 4;

fig. 6 is a schematic structural diagram of the position of the C of the present invention;

FIG. 7 is an enlarged view of the structure at position C in FIG. 6;

fig. 8 is a schematic structural view of the position of D in the drawing of the present invention;

FIG. 9 is an enlarged view of the structure at position D in FIG. 8;

fig. 10 is a schematic structural view of the position of E in the figure according to the present invention;

FIG. 11 is an enlarged view of the position E in FIG. 10;

wherein: 1. a first base; 2. a second base; 3. a lateral adjustment assembly; 4. a longitudinal adjustment assembly; 5. a clamping assembly; 6. a fixed mount; 7. folding the fixing component; 101. a first base plate; 102. a first vertical plate; 201. a second base plate; 202. a second vertical plate; 301. a drive motor; 302. a lead screw; 303. a driven block; 304. a mounting frame; 305. a limiting rod; 401. a bearing block; 402. a movable block; 403. a cross bar; 404. a rack; 405. calibration; 406. a rotating shaft; 407. a gear; 408. a driven plate; 409. a card slot; 410. a clamping block; 411. a first spring; 412. a limiting sheet; 413. a connecting rod; 414. a rotating ring; 501. a fixing ring; 502. an empty slot block; 503. a pull rod; 504. clamping the arc block; 505. a second spring; 506. a handle; 701. installing a support column; 702. a bolt; 703. a strip-shaped magnetic block.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As the background art states, the problem that the steel pipe welding effect is poor and the equipment is inconvenient to store due to the fact that errors are difficult to adjust when the steel pipes are butted by the existing equipment.

In order to solve the technical problem, the utility model discloses the people provides a steel pipe welding is with supplementary clamping device.

Specifically, as shown in fig. 1 to 11, the foldable adjusting device includes a first base 1, a second base 2, a transverse adjusting component 3, a longitudinal adjusting component 4, a clamping component 5, a fixing frame 6 and a folding fixing component 7, wherein the transverse adjusting component 3 is arranged on the top of the first base 1, the fixing frame 6 is arranged on the top of the second base 2, the longitudinal adjusting component 4 and the clamping component 5 are taken as one group, and the two groups are two groups, one group is arranged on the longitudinal adjusting component 4, the other group is arranged on the fixing frame 6, and the folding fixing component 7 is arranged between the first base 1 and the second base 2; the longitudinal adjusting assembly 4 comprises a bearing block 401, a movable block 402, a cross bar 403, racks 404, a rotating shaft 406 and gears 407, wherein the cross bar 403 is arranged inside the bearing block 401, the movable block 402 is in sliding fit with the cross bar 403, the racks 404 are arranged on two sides of the movable block 402, the gears 407 are arranged on the outer wall of the rotating shaft 406, and the gears 407 are meshed with the racks 404.

The utility model discloses accomodate the transportation convenient, if the longitudinal dislocation when two sections steel pipes appear in the welding process is poor, the accessible longitudinal adjustment subassembly 4 finely tunes, makes two sections steel pipe ports closely dock, makes things convenient for follow-up staff's welding, connects stably, welds effectually; the arrangement of the transverse adjusting component 3 ensures that the device is suitable for welding steel pipes with different lengths, and has convenient adjustment and strong practicability.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them.

Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. 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.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

As shown in fig. 1, 4, 5, 6, 7, 8, and 9, an auxiliary clamping device for welding a steel pipe comprises a first base 1, a second base 2, a transverse adjusting assembly 3, a longitudinal adjusting assembly 4, a clamping assembly 5, a fixing frame 6, and a folding fixing assembly 7, wherein the transverse adjusting assembly 3 is arranged on the top of the first base 1, the fixing frame 6 is arranged on the top of the second base 2, the longitudinal adjusting assembly 4 and the clamping assembly 5 are combined into one group, two groups are provided, one group is arranged on the longitudinal adjusting assembly 4, the other group is arranged on the fixing frame 6, and the folding fixing assembly 7 is arranged between the first base 1 and the second base 2; the longitudinal adjusting assembly 4 comprises a bearing block 401, a movable block 402, a cross bar 403, racks 404, a rotating shaft 406 and gears 407, wherein the cross bar 403 is arranged inside the bearing block 401, the movable block 402 is in sliding fit with the cross bar 403, the racks 404 are arranged on two sides of the movable block 402, the gears 407 are arranged on the outer wall of the rotating shaft 406, and the gears 407 are meshed with the racks 404.

Specifically, horizontal pole 403 is horizontal inside carrier block 401, and its both ends and carrier block 401 inner wall fixed connection have seted up rectangular spout on the movable block 402, and movable block 402 is through rectangular spout and horizontal pole 403 sliding fit, and a terminal surface of movable block 402 is provided with scale 405, and the top of movable block 402 is provided with centre gripping subassembly 5, and the bottom of carrier block 401 is provided with lateral adjustment subassembly 3.

The number of the gears 407 arranged on the rotating shaft 406 is two, the gears are correspondingly engaged with the rack 404, a driven disc 408 is arranged on the outer wall of one end of the rotating shaft 406, a fixture block 410 is arranged on one end face, close to the bearing block 401, of the driven disc 408, a plurality of clamping grooves 409 are arranged on one end face, corresponding to the bearing block 401 and the driven disc 408, of the bearing block 401, the fixture blocks 410 are in clamping fit with the clamping grooves 409, a first spring 411 is arranged on the outer wall of the rotating shaft 406, a limiting piece 412 is arranged at one end of the rotating shaft 406, one end of the first spring 411 is in contact with the driven disc 408, and the other end of the first spring is in contact with the limiting piece 412.

The outer end face of driven plate 408 is provided with a plurality of connecting rods 413 arranged in central symmetry, one end of connecting rod 413 is provided with a rotating ring 414, and the outer wall of rotating ring 414 is sprayed with anti-skid paint.

Because the two gears 407 on the rotating shaft 406 are engaged with the rack 404, a worker controls the longitudinal movement of the movable block 402 while rotating the rotating ring 414, a scale 405 is arranged at one end of the movable block 402, the sight of the worker is flush with the scale 405, the position of the movable block 402 is judged by observing the position where the scale 405 coincides with the top of the bearing block 401, the number of the scales 405 of the two sets of longitudinal adjusting assemblies 4 is adjusted to be the same, and meanwhile, the horizontal position of the outer wall of the two sections of steel pipes is observed to be determined as a straight line, which is the optimal position for welding the two sections of steel pipes.

When the worker rotates the rotating ring 414 to adjust, the worker needs to pull the rotating ring 414 backwards to enable the fixture block 410 on one end face of the rotating ring 414 to be separated from the limitation of the clamping groove 409, then the rotating ring 414 is rotated, the rotating ring 414 is loosened after the adjustment is completed, the driven disc 408 rebounds under the action of the first spring 411, and the rotation of the gear 407 is limited by the clamping of the fixture block 410 and the clamping groove 409. In addition, the outer wall of the rotating ring 414 is coated with an anti-slip coating to increase the static friction between the hands of the worker and the rotating ring 414 and avoid slipping.

As shown in fig. 1, 2, and 3, the clamping assembly 5 includes a fixing ring 501 disposed on the top of the movable block 402 and two hollow blocks 502 disposed on the fixing ring 501, the two hollow blocks 502 are symmetrically disposed, a pull rod 503 is slidably disposed inside the hollow block 502, one end of the pull rod 503 is provided with a clamping arc block 504, the other end of the pull rod is provided with a handle 506, the outer wall of the pull rod 503 is provided with a second spring 505, and the inner wall of the clamping arc block 504 is provided with a non-slip mat.

The structure of the clamping assembly 5 is suitable for steel pipes with different apertures, and has the advantages of simple structure, convenient operation and stable clamping. When clamping work is carried out, a worker needs to pull the handles 506 at two sides to separate the opposite clamping arc blocks 504, penetrate the steel pipe through the fixing ring 501, and finally loosen the handles 506, so that the clamping arc blocks 504 can provide clamping force for the steel pipe under the action of the second spring 505; the anti-slip pads are used to increase the static friction between the clamping arc blocks 504 and the steel pipe, thereby preventing the steel pipe from sliding.

As shown in fig. 1, the first base 1 includes a first base plate 101 and first vertical plates 102 disposed on two sides of the first base plate 101, the second base 2 includes a second base plate 201 and second vertical plates 202 disposed on two sides of the second base plate 201, a rotation hinge is disposed on a side of the first vertical plate 102 opposite to the second vertical plate 202, the lateral adjustment assembly 3 is disposed on a top of the first base plate 101, and the fixing frame 6 is disposed on a top of the second base plate 201.

Horizontal adjustment subassembly 3 is including setting up at the driving motor 301 at first bottom plate 101 top and with the lead screw 302 of driving motor 301 output shaft key-type connection, the one end and the first riser 102 of lead screw 302 are rotated and are connected, the lead screw 302 outer wall is provided with driven piece 303, the both sides of driven piece 303 are provided with mounting bracket 304, the through-hole has been seted up on the mounting bracket 304, be provided with gag lever post 305 in the through-hole, the both ends and the first riser 102 fixed connection of gag lever post 305, the top of driven piece 303 is provided with vertical adjustment subassembly 4.

The arrangement of the transverse adjusting component 3 ensures that the device is suitable for welding steel pipes with different lengths. If a section of welded steel pipe is longer, the positions of the longitudinal adjusting assembly 4 and the clamping assembly 5 on the driven block 303 can be adjusted by starting the driving motor 301, so that the driven block is close to the position of the driving motor 301, otherwise, the driven block is far away from the position of the driving motor 301, and therefore the welding device is convenient to adjust and high in practicability.

As shown in fig. 10 and fig. 11, the folding fixing component 7 includes an installation supporting column 701, a bolt 702 and a long magnetic block 703, one end of the installation supporting column 701 is fixedly connected with the first vertical plate 102, the other end of the installation supporting column is in contact with the second vertical plate 202, threaded through holes are formed in the installation supporting column 701, the first vertical plate 102 and the second vertical plate 202, the bolt 702 is screwed in the threaded through holes, and the long magnetic block 703 is arranged on the same side of the first bottom plate 101, the second bottom plate 201, the first vertical plate 102 and the second vertical plate 202.

When equipment is stored, the bolt 702 is firstly screwed to separate the first vertical plate 102 from the second vertical plate 202, then the hinge is used as a shaft to rotate and fold, and the long magnetic blocks 703 on one sides of the first base plate 101 and the first vertical plate 102 are fixedly adsorbed with the long magnetic blocks 703 on one sides of the second base plate 201 and the second vertical plate 202, so that the equipment is convenient to store and transfer.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a steel pipe welding is with supplementary clamping device, includes first base (1), second base (2), horizontal adjusting part (3), vertical adjusting part (4), centre gripping subassembly (5), mount (6) and folding fixed subassembly (7), its characterized in that: the transverse adjusting assembly (3) is arranged at the top of the first base (1), the fixing frame (6) is arranged at the top of the second base (2), the longitudinal adjusting assembly (4) and the clamping assembly (5) are taken as one group, the two groups are two, one group is arranged on the longitudinal adjusting assembly (4), the other group is arranged on the fixing frame (6), and the folding fixing assembly (7) is arranged between the first base (1) and the second base (2);

the longitudinal adjusting assembly (4) comprises a bearing block (401), a movable block (402), a cross rod (403), a rack (404), a rotating shaft (406) and a gear (407), the cross rod (403) is arranged inside the bearing block (401), the movable block (402) is in sliding fit with the cross rod (403), the rack (404) is arranged on two sides of the movable block (402), the outer wall of the rotating shaft (406) is provided with the gear (407), and the gear (407) is meshed with the rack (404).

2. The auxiliary clamping device for the steel pipe welding as claimed in claim 1, wherein the cross bar (403) is transversely arranged inside the bearing block (401), two ends of the cross bar are fixedly connected with the inner wall of the bearing block (401), the movable block (402) is provided with a long sliding groove, the movable block (402) is in sliding fit with the cross bar (403) through the long sliding groove, one end face of the movable block (402) is provided with a scale (405), the top of the movable block (402) is provided with the clamping assembly (5), and the bottom of the bearing block (401) is provided with the transverse adjusting assembly (3).

3. The auxiliary clamping device for the steel pipe welding as claimed in claim 1, wherein the number of the gears (407) arranged on the rotating shaft (406) is two and the gears are correspondingly engaged with the rack (404), a driven disc (408) is arranged on the outer wall of one end of the rotating shaft (406), a clamping block (410) is arranged on one end face, close to the bearing block (401), of the driven disc (408), a plurality of clamping grooves (409) are arranged in a circumferential array on one end face, corresponding to the driven disc (408), of the bearing block (401), the clamping block (410) is in clamping fit with the clamping grooves (409), a first spring (411) is arranged on the outer wall of the rotating shaft (406), a limiting piece (412) is arranged at one end of the rotating shaft (406), one end of the first spring (411) is in contact with the driven disc (408), and the other end of the first spring is in contact with the limiting piece (412).

4. The auxiliary clamping device for the welding of the steel pipe as claimed in claim 3, wherein the outer end face of the driven disc (408) is provided with a plurality of connecting rods (413) which are arranged in a central symmetry manner, and one end of each connecting rod (413) is provided with a rotating ring (414).

5. The auxiliary clamping device for welding steel pipes as claimed in claim 4, wherein the outer wall of the rotating ring (414) is coated with an anti-slip coating.

6. The auxiliary clamping device for the steel pipe welding according to claim 2, wherein the clamping assembly (5) comprises a fixing ring (501) arranged at the top of the movable block (402) and two hollow blocks (502) arranged on the fixing ring (501), the two hollow blocks (502) are symmetrically arranged, a pull rod (503) is slidably arranged inside the hollow block (502), one end of the pull rod (503) is provided with a clamping arc block (504), the other end of the pull rod is provided with a handle (506), the outer wall of the pull rod (503) is provided with a second spring (505), and the inner wall of the clamping arc block (504) is provided with an anti-skid pad.

7. The auxiliary clamping device for the steel pipe welding of claim 1, wherein the first base (1) comprises a first base plate (101) and first vertical plates (102) arranged on two sides of the first base plate (101), the second base (2) comprises a second base plate (201) and second vertical plates (202) arranged on two sides of the second base plate (201), rotating hinges are arranged on the opposite surfaces of the first vertical plates (102) and the second vertical plates (202), the transverse adjusting assembly (3) is arranged at the top of the first base plate (101), and the fixing frame (6) is arranged at the top of the second base plate (201).

8. The auxiliary clamping device for the steel pipe welding of claim 7, wherein the transverse adjusting component (3) comprises a driving motor (301) arranged at the top of the first base plate (101) and a lead screw (302) connected with an output shaft of the driving motor (301), one end of the lead screw (302) is rotatably connected with the first vertical plate (102), a driven block (303) is arranged on the outer wall of the lead screw (302), mounting frames (304) are arranged on two sides of the driven block (303), a through hole is formed in each mounting frame (304), a limiting rod (305) is arranged in each through hole, two ends of each limiting rod (305) are fixedly connected with the first vertical plate (102), and a longitudinal adjusting component (4) is arranged at the top of each driven block (303).

9. The auxiliary clamping device for the steel pipe welding of claim 8, wherein the folding fixing component (7) comprises an installation supporting column (701), a bolt (702) and a long magnetic block (703), one end of the installation supporting column (701) is fixedly connected with a first vertical plate (102), the other end of the installation supporting column is in contact with a second vertical plate (202), threaded through holes are formed in the installation supporting column (701), the first vertical plate (102) and the second vertical plate (202), the bolt (702) is screwed in the threaded through holes, and the long magnetic block (703) is arranged on the same side of the first bottom plate (101), the second bottom plate (201), the first vertical plate (102) and the second vertical plate (202).