CN220636857U

CN220636857U - Horizontal circular seam assembly tool for pressure container

Info

Publication number: CN220636857U
Application number: CN202321722134.5U
Authority: CN
Inventors: 林春; 魏仁军; 武爱兵; 张建峰; 陈钧; 李付磊
Original assignee: Sinopec Engineering Group Co Ltd; Sinopec Ningbo Engineering Co Ltd; Sinopec Ningbo Technology Research Institute; Ningbo Tianyi Petrochemical Heavy Equipment Manufacture Co Ltd
Current assignee: Sinopec Engineering Group Co Ltd; Sinopec Ningbo Engineering Co Ltd; Sinopec Ningbo Technology Research Institute; Ningbo Tianyi Petrochemical Heavy Equipment Manufacture Co Ltd
Priority date: 2023-07-04
Filing date: 2023-07-04
Publication date: 2024-03-22
Anticipated expiration: 2033-07-04

Abstract

The utility model discloses a horizontal circular seam assembly tooling for a pressure container, which comprises a steel base, wherein two sides of the base are parallel and symmetrically provided with two rows of supporting mechanisms, each row of supporting mechanisms consists of a group of driving wheel systems and two groups of driven wheel systems which are coaxially arranged, the driving wheel systems are arranged in the middle of the base, two sides of each driving wheel system are respectively provided with a group of driven wheel systems, each driving wheel system consists of two rotatable driving wheels, the two driving wheels are driven by a hydraulic motor, the hydraulic motor is controlled by a hydraulic control system, and each group of driven wheel systems consists of a plurality of rotatable and axially sliding driven wheels. The tool is novel and compact in structure, small in occupied area, low in manufacturing cost, good in universality and suitable for cylinder sections with different diameters. In the assembling process, an operator only needs to stand on the ground beside the tool, and can rapidly and high-quality complete assembling of multiple circular welds along with rotation of the cylindrical shell, so that workload and difficulty of assembling are greatly reduced, operation is convenient and efficient, and safety coefficient is high.

Description

Horizontal circular seam assembly tool for pressure container

Technical Field

The utility model belongs to the technical field of pressure vessel preparation, and particularly relates to a horizontal circular seam assembly tooling for a pressure vessel.

Background

In the manufacturing of cylindrical pressure vessels such as pipelines and towers, the manufacturing plant usually comprises a step of rolling a steel plate into cylindrical sections and then assembling and welding the sections. These pressure vessels are basically nonstandard devices of varying sizes and diameters ranging from less than one meter to tens of meters. When large-diameter equipment is manufactured, because the volume of a workpiece is too large, the construction efficiency is low, and particularly, the assembly link of circumferential welds between adjacent cylindrical sections is more labor-consuming.

In the manufacturing process of a large-diameter or oversized-diameter pressure container rolled by a steel plate, three cylinder sections and four cylinder sections are generally assembled into a small section, and after the circular seams in the small section are welded, the small sections are assembled into a whole. In order to ensure straightness, when assembling small sections, a simple tool is adopted, the tool consists of two parallel straight steel pipes, when assembling, cylinder sections are hung between the two straight steel pipes one by one (as shown in fig. 1, 7 is a cylinder section and 8 is a straight steel pipe in fig. 1), and after finding the direction, two adjacent cylinder sections are folded together by using a manual hoist. When the cylinder wall is thinner, the rigidity of the cylinder section is insufficient, and the top part of the cylinder section is collapsed under the influence of dead weight, so that the diameter of the cylinder section in the vertical direction is reduced, and the diameter in the horizontal direction is increased. At this time, it is necessary to provide a supporting means inside the shell ring to restore the shape of the shell ring, and then to perform spot welding group pairs one by one. By adopting the assembly mode, when the girth weld assembly with larger diameter is carried out, the shell ring cannot be easily rotated, and the upper half part of the shell ring can be operated by means of a scaffold or a climbing instrument no matter the operation is carried out on the inner side of the shell ring or the outer side of the shell ring. When the standard is more than 2 meters, the standard ascending facilities are needed to ascend the height according to the regulatory requirements of safe production. If the cylinder wall is thinner, the rigidity of the cylinder sections is insufficient, the cylinder sections are easily collapsed to be elliptical under the influence of dead weight, the situation that the upper part and the lower part between the two cylinder sections are folded and the middle part is large in opening is sometimes caused, the cylinder sections are supported internally, the opening between the two cylinder sections is reduced after the cylinder sections are promoted to be restored to be circular, and then spot welding assembly is carried out. In the pairing process, constructors often need to climb up and climb down to operate, so that the workload and difficulty of pairing work are increased intangibly, and the safety risk coefficient of operators is increased.

There is also special group to frock in the market, by many sets of rolling change child constitute, every set changes the distance between the child and can adjust, promotes the shell ring to close. The special pairing tool can enable the cylinder sections to rotate, so that the ascending operation of workers is avoided, but if a plurality of cylinder sections are paired together, a plurality of corresponding rotating tires are prepared, and the early cost investment is very high. In addition, the special assembly tool cannot solve the problem of deformation correction when the thin-wall cylinder section collapses to be elliptical, and a supporting facility is additionally provided in the cylinder section, so that the distance between two rotating tires is relatively fixed due to the large size of the rotating tires, and the supporting facility cannot be placed if the length of the cylinder section is shorter.

Therefore, it is necessary to design an easy-to-operate and low-cost circular seam pairing tool for the pressure vessel. It has been described that the pressure vessels are basically nonstandard devices, and the specifications are different, and it is not practical to design the pairing tools for nonstandard devices with a single diameter. In view of the above, the utility model provides an economical and practical horizontal circumferential seam assembly tooling for pressure vessels, which can be generally used for various medium-large diameter equipment and can realize safe and efficient circumferential seam assembly work.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the horizontal circular seam assembly tooling for the pressure vessel, which is novel and compact, small in occupied area, low in manufacturing cost, good in universality, convenient and efficient to operate and high in safety coefficient.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a horizontal circumferential weld group is to frock for pressure vessel, includes the base of steel, the both sides of base parallel and symmetry be provided with two rows of supporting mechanism, every row supporting mechanism by a set of action wheel system and two sets of follow driving wheel system that set up coaxially constitute, action wheel system locate the middle part of base, action wheel system's both sides respectively be equipped with a set of follow driving wheel system, action wheel system constitute by two rotatable action wheels, two the rotation of action wheel is by hydraulic motor drive, hydraulic motor by hydraulic control system control, every group follow driving wheel system by a plurality of rotatable and axial slip from the driving wheel constitution, group is to the in-process by action wheel and follow the driving wheel support the section of a cylinder that waits to be assembled, drive section of a cylinder rotates through the rotation of action wheel, drive section of a cylinder axial displacement through the axial slip of follow driving wheel.

The horizontal circular seam assembly tool disclosed by the utility model has the advantages of novel and compact structure, small occupied area, low manufacturing cost and good universality, is suitable for cylindrical sections with different diameters, can meet the requirement of cylindrical section assembly of a conventional pressure container or tower (mainly 2-8 m in diameter), and can also be used for splicing and welding of rolled pipelines or tubular piles with ultra-large diameters.

When the two cylinder sections are folded and butted, the two cylinder sections can be not only oppositely closed and have adjustable distance, but also independently rotated, thereby realizing safe and efficient girth assembly work. In the assembly process, one cylindrical section is placed on the driving wheel, the other cylindrical section is placed on the driven wheel, the driving wheel is powered by a hydraulic motor, the cylindrical section is driven to rotate through rotation, the driven wheel axially slides to drive the cylindrical section to axially move according to the distance between the two cylindrical sections when the two cylindrical sections are folded, the two cylindrical sections are provided with assembly conditions, after the alignment direction is to be found, a plurality of sections of tack welds are welded on a circular seam which is required to be assembled between the two cylindrical sections, the cylindrical section placed on the driven wheel and the cylindrical section placed on the driving wheel can be driven to rotate together along with the rotation of the driving wheel, so that operators do not need to ascend by means of a scaffold or ascending instrument, and can rapidly and high-quality complete the assembly of a plurality of circular welds along with the rotation of the cylindrical sections, thereby greatly reducing the workload and difficulty of the assembly work, and being convenient and efficient in operation and high in safety factor.

Preferably, the base on be provided with the rocking arm roof pressure system, the rocking arm roof pressure system locate two rows of supporting mechanism's the outside, the rocking arm roof pressure system include many sets of rocking arm subassemblies, many sets of rocking arm subassemblies along the longitudinal interval of base lay, every set of rocking arm subassembly including the symmetry set up two rocking arms in base both sides, every the bottom of rocking arm with the base rotationally be connected, every the top of rocking arm install a rotatable top wheel, every the rocking arm is driven by the pneumatic cylinder, the pneumatic cylinder by the control system control, when needing to correct the ellipticity of shell ring, under the drive of corresponding pneumatic cylinder, two rocking arms that set up in opposite directions rotate, the pressure that produces is conducted to the shell ring through corresponding top wheel, through the top compaction realization ellipticity to the shell ring is corrected. The rocker arm jacking system is directly arranged on the tool, has a simple structure, can conveniently and efficiently realize the ovality correction work of cylinder sections with various specifications, and can put down the rocker arm after assembly is completed without influencing the hoisting operation of the cylinder sections. The hydraulic cylinders of each set of rocker arm assembly can independently adjust the pressure, so that different pressure requirements for correcting ovality of different cylinder sections are met. When the rocker arm jacking system works, the hydraulic cylinder drives the two rocker arms which are arranged in opposite directions to rotate in opposite directions, pressure is applied to the cylinder section through the jacking wheel, the diameter of the cylinder section in the horizontal direction is reduced, and therefore the ellipse caused by the fact that the diameter of the cylinder section in the vertical direction is reduced and the diameter of the cylinder section in the horizontal direction is increased due to the fact that the top of the cylinder section is collapsed due to self weight is corrected. Besides the function of correcting the ellipticity of the cylinder sections, the rocker arm jacking system has two very practical auxiliary functions, namely, when a welding line spot welding link is entered and a welding line has a staggered joint, the characteristic that each set of rocker arm assembly can independently adjust the pressure is utilized, different pressures can be respectively applied to the corresponding cylinder sections, and the correction is very convenient, so that the use of other sets for a work clamp is greatly reduced; and the rocker arms with two raised sides can play a role in protecting the cylinder section no matter whether the rocker arms are in a jacking state or not, so that the cylinder section with the large diameter can be prevented from falling off the tool to cause safety accidents when rotating. In the process of realizing the correction function and the auxiliary function, the top wheel can change sliding friction into rolling friction, so that the resistance of the cylinder section in rotation is reduced.

Preferably, the base is provided with two sets of hydraulic traction systems, each set of hydraulic traction system comprises a double-head hydraulic cylinder and two iron chains arranged along the longitudinal direction of the base, the double-head hydraulic cylinder is arranged in the middle of the base, the double-head hydraulic cylinder is controlled by the hydraulic control system, two ends of a piston rod of the double-head hydraulic cylinder are respectively fixed with one iron chain, one end, far away from the double-head hydraulic cylinder, of each iron chain extends out of the base, each iron chain is provided with a plurality of detachable lifting buckles, each lifting buckle is fixedly provided with a drag hook, when the hydraulic traction system is required to drive a cylinder section on a driven wheel to axially move, the corresponding drag hook is hung on the outer edge of the cylinder section after the position of the lifting buckle is adjusted, and the piston rod of the double-head hydraulic cylinder is started to move in a set direction, so that the cylinder section can be driven to axially move. The surface of the optical axis can be coated with lubricating grease, the sliding resistance of the driven wheel is small, and under the general condition, the cylinder section arranged on the driven wheel can be pushed to slide by manpower, so that the cylinder section is close to the other cylinder section. When the large-diameter thick-wall cylinder sections are assembled, if the manual force is inconvenient to push, the cylinder sections can be pulled by the two hydraulic traction systems. For cylinder sections with different lengths, the positions of the lifting buckles and the drag hooks on the iron chain can be adjusted, and then the subsequent traction and pulling operation is performed.

Preferably, the driving wheel system is erected on a plurality of first steel plates, the plurality of first steel plates are respectively and vertically fixed on the base, two bearing seats are arranged at the tops of the plurality of first steel plates, each driving wheel is fixed on a main shaft, two main shafts are respectively and rotatably arranged on the two bearing seats, the two main shafts are connected through a coupling, a transmission gear is fixed on one main shaft, the transmission gear is connected with the hydraulic motor through linkage of a multistage gear set, the two driven wheel systems are respectively erected on a plurality of second steel plates, the plurality of second steel plates are respectively and vertically fixed on the base, a plurality of shaft sleeves are arranged at the tops of the plurality of second steel plates, each driven wheel is axially and slidably arranged on an optical axis, and two ends of the optical axis are respectively fixed on the two shaft sleeves. The optical axis can be a whole long optical axis, or an optical axis can be fixed between every two shaft sleeves.

Preferably, each shaft sleeve is an upper-lower split shaft sleeve, the lower part of each shaft sleeve is fixed at the top of one second steel plate, and the upper part of each shaft sleeve is detachable. Because the driven wheel mainly bears the downward pressure from the cylinder section, the upper and lower split type shaft sleeve is adopted, and the installation and the replacement of the optical axis and the driven wheel are convenient.

Preferably, each optical axis is sleeved with a rubber telescopic hose, so that the surface of the optical axis is prevented from being damaged under the conditions of welding spatter, article striking and the like, and the purpose of protecting lubricating grease is achieved.

Preferably, the inner sides of the first steel plate and the second steel plate which are positioned on the same side of the base are connected together through a strip steel plate, the bottom of the strip steel plate is fixed on the base, and the strip steel plate is inclined to the inner side of the base from top to bottom. The strip steel plate can improve the overall strength of the tool, and the cross section of the whole tool is of a U-shaped structure, so that the tool can be suitable for cylindrical shells with various diameters, and the rigidity of the base can be improved to the greatest extent.

Compared with the prior art, the utility model has the following advantages: the horizontal circular seam assembly tooling for the pressure container has the advantages of novel and compact structure, small occupied area, low manufacturing cost and good universality, is suitable for cylindrical sections with different diameters, can meet the requirement of cylindrical section assembly of a conventional pressure container or tower (mainly 2-8 meters in diameter), and can also be used for splicing and welding of rolled pipelines or tubular piles with ultra-large diameters. In the assembling process, operators do not need to ascend by means of a scaffold or an ascending instrument, only need to stand on the ground beside the tool, and can rapidly and high-quality complete assembling of multiple circular welds along with rotation of the cylindrical shell, so that workload and difficulty of assembling work are greatly reduced, operation is convenient and efficient, and safety coefficient is high.

Drawings

FIG. 1 is a schematic view of a state of use of a simple assembly tool most commonly used in the prior art;

FIG. 2 is an external view of a pairing tool in an embodiment;

FIG. 3 is a top view of the assembly tool according to the embodiment;

FIG. 4 is a side view of a rocker arm jacking system in an embodiment in use;

specific reference numerals in fig. 1 to 4 are as follows:

1-base, 11-first steel plate, 12-bearing seat, 13-main shaft, 14-coupling, 15-transmission gear, 16-multistage gear set, 17-second steel plate, 18-axle sleeve, 19-rubber telescopic hose, 10-strip steel plate, 2-driving wheel system, 21-driving wheel, 22-hydraulic motor, 3-driven wheel system, 31-driven wheel, 32-optical axis, 4-hydraulic control system, 51-rocker arm, 52-top wheel, 53-hydraulic cylinder, 54-pin hole, 55-shaft pin, 56-lug seat, 61-double-head hydraulic cylinder, 62-iron chain, 63-lifting buckle, 7-cylinder section, 8-straight steel pipe.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

The horizontal circumferential seam assembly tooling for the pressure container of the embodiment comprises a steel base 1, two rows of supporting mechanisms are arranged on two sides of the base 1 in parallel and symmetrically, each row of supporting mechanisms consists of a group of driving wheel systems 2 and two groups of driven wheel systems 3 with different lengths, the driving wheel systems 2 are arranged in the middle of the base 1, one group of driven wheel systems 3 are respectively arranged on two sides of the driving wheel systems 2, the driving wheel systems 2 consist of two rotatable driving wheels 21, the rotation of the two driving wheels 21 is driven by a hydraulic motor 22, the hydraulic motor 22 is controlled by a hydraulic control system 4, each group of driven wheel systems 3 consists of a plurality of rotatable and axially sliding driven wheels 31, in the assembly process, a cylinder section 7 to be assembled is supported by the driving wheels 21 and the driven wheels 31, the cylinder section 7 is driven to rotate through the rotation of the driving wheels 21, and the cylinder section 7 is driven to axially move through the axial sliding of the driven wheels 31.

The base 1 is provided with a rocker arm jacking system, the rocker arm jacking system is arranged on the outer sides of the two rows of supporting mechanisms, the rocker arm jacking system comprises a plurality of rocker arm assemblies, the rocker arm assemblies are distributed along the longitudinal interval of the base 1, each rocker arm assembly comprises two rocker arms 51 symmetrically arranged on two sides of the base 1, the bottom end of each rocker arm 51 is rotatably connected with the base 1, the top end of each rocker arm 51 is provided with a rotatable top wheel 52, each rocker arm 51 is driven by a hydraulic cylinder 53, the hydraulic cylinder 53 is controlled by the hydraulic control system 4, when the ellipticity of the cylinder section 7 needs to be corrected, the two rocker arms 51 oppositely arranged are rotated under the driving of the corresponding hydraulic cylinder 53, generated pressure is conducted to the cylinder section 7 through the corresponding top wheels 52, and the ellipticity is corrected through the top pressure of the cylinder section 7.

The base 1 is provided with two sets of hydraulic traction systems, each set of hydraulic traction system comprises a double-head hydraulic cylinder 61 and two iron chains 62 which are arranged along the longitudinal direction of the base 1, the double-head hydraulic cylinder 61 is installed in the middle of the base 1, the double-head hydraulic cylinder 61 is controlled by the hydraulic control system 4, two iron chains 62 are respectively fixed at two ends of a piston rod of the double-head hydraulic cylinder 61, one ends of the two iron chains 62, which are far away from the double-head hydraulic cylinder 61, respectively extend out of the base 1, a plurality of detachable lifting buckles 63 are installed on each iron chain 62, a drag hook (not shown in the figure) is fixed on each lifting buckle 63, when the hydraulic traction system is required to drive a cylinder section 7 on a driven wheel 31 to axially move, after the position of the lifting buckle 63 is adjusted, the corresponding drag hook is hung on the outer edge of the cylinder section 7, the double-head hydraulic cylinder 61 is started, so that the piston rod of the double-head hydraulic cylinder 61 moves towards the set direction, and the cylinder section 7 can be driven to axially move.

The driving wheel system 2 is erected on a plurality of first steel plates 11, the plurality of first steel plates 11 are respectively and vertically welded and fixed on the base 1, two bearing seats 12 are arranged at the tops of the plurality of first steel plates 11, each driving wheel 21 is fixed on one main shaft 13, the two main shafts 13 are respectively and rotatably arranged on the two bearing seats 12, the two main shafts 13 are connected through a coupler 14, a transmission gear 15 is fixed on one main shaft 13, the transmission gear 15 is connected with a hydraulic motor 22 through linkage of a multistage gear set 16, the two driven wheel systems 3 are respectively erected on a plurality of second steel plates 17, the plurality of second steel plates 17 are respectively and vertically welded and fixed on the base 1, a plurality of shaft sleeves 18 are arranged at the tops of the plurality of second steel plates 17, each driven wheel 31 is axially slidably arranged on an optical axis 32, two ends of the optical axis 32 are respectively fixed on the two shaft sleeves 18, the diameter of each optical axis 32 is 80mm, a rubber telescopic hose 19 is sleeved on each optical axis 32 (a small amount of rubber telescopic hoses 19 are shown in fig. 3), each shaft sleeve 18 is an upper and lower split type shaft sleeve 18, the lower part of each shaft sleeve 18 is fixed on the top of the second steel plates 17, and the upper part of each shaft sleeve 18 is detachably arranged at the top of the second steel plates 17.

The inner sides of the first steel plate 11 and the second steel plate 17 which are positioned on the same side of the base 1 are connected together through a strip steel plate 10, the bottom of the strip steel plate 10 is welded and fixed on the base 1, and the strip steel plate 10 is inclined to the inner side of the base 1 from top to bottom.

In this embodiment, the base 1 is rectangular, and since the regular length of the shell ring 7 is about 2 meters, and usually 3 to 5 shell rings 7 are assembled into small segments, the base 1 has a length of about 10 meters, a width of about 2.5 meters, and a certain rigidity. The distance between the two rows of supporting mechanisms meets the pairing requirement of the cylindrical shell section 7 with the conventional diameter of 2-6 meters. In this embodiment, the plurality of rocker arms 51 are formed by welding steel plates in a split manner, are hollow, and have a tapered cross-sectional shape from bottom to top, similar to a human hand. The bottom of each rocker arm 51 is provided with a pin hole 54, a plurality of first steel plates 11 and second steel plates 17 are respectively fixed with a shaft pin 55, the pin holes 54 are matched with the shaft pins 55 and serve as the center of rotation of the rocker arms 51, meanwhile, the bottom of each rocker arm 51 is fixedly connected with a lug seat 56, and each lug seat 56 is hinged with a piston rod of a hydraulic cylinder 53. In this embodiment, the moment ratio of each rocker arm 51 is about 1:8, and a hydraulic cylinder 53 with an output thrust of 20 tons is selected, so that the top wheel 52 at the top end of the rocker arm 51 can generate pressure of more than 2 tons, and the ovality correction work of the conventional cylinder section 7 caused by dead weight can be basically satisfied.

The horizontal circular seam assembly tooling for the pressure container has the advantages that the folding, rotation, ovality correction and other works are considered when the cylindrical shell section 7 is folded and aligned, and the works can be carried out simultaneously.

When the two cylinder sections 7 are folded and butted, the two cylinder sections 7 can be folded in opposite directions, the distance is adjustable, and the two cylinder sections can independently rotate, so that safe and efficient girth joint pairing work is realized. In the assembling process, one cylindrical section 7 is placed on the driving wheel 21, the other cylindrical section 7 is placed on the driven wheel 31, the driving wheel 21 is powered by the hydraulic motor 22, the cylindrical section 7 is driven to rotate through rotation, the driven wheel 31 axially slides according to the distance when the two cylindrical sections 7 are folded to drive the cylindrical section 7 to axially move, the two cylindrical sections 7 are provided with assembling conditions, after the alignment direction is to be aligned, the cylindrical sections 7 are required to be assembled on a circular seam, a plurality of sections of positioning welding are performed on the circular seam, the cylindrical section 7 placed on the driven wheel 31 and the cylindrical section 7 placed on the driving wheel 21 can be driven to rotate together along with the rotation of the driving wheel 21, so that operators can quickly and high-quality assemble a plurality of circular welds only by standing on the ground beside a tool along with the rotation of the cylindrical section 7, the workload and the difficulty of assembling work are greatly reduced, the operation is convenient and efficient, and the safety coefficient is high.

When the rocker arm jacking system works, the hydraulic cylinder 53 drives the two rocker arms 51 which are arranged in opposite directions to rotate in opposite directions, so that the rocker arms 51 rotate around the central line of the shaft pin, and pressure is applied to the cylinder section 7 through the opposite top wheels 52, so that the diameter of the cylinder section 7 in the horizontal direction is reduced, and the ellipse caused by the reduction of the diameter of the cylinder section 7 in the vertical direction and the increase of the diameter of the cylinder section in the horizontal direction due to top collapse caused by dead weight is corrected.

Claims

1. The horizontal type circular seam assembly tooling for the pressure container is characterized by comprising a steel base, wherein two rows of supporting mechanisms are arranged on two sides of the base in parallel and symmetrically, each row of supporting mechanisms consists of a group of driving wheel systems and two groups of driven wheel systems which are coaxially arranged, the driving wheel systems are arranged in the middle of the base, two groups of driven wheel systems are respectively arranged on two sides of the driving wheel systems, each driving wheel system consists of two rotatable driving wheels, the rotation of the two driving wheels is driven by a hydraulic motor, each hydraulic motor is controlled by a hydraulic control system, each group of driven wheel systems consists of a plurality of rotatable and axially sliding driven wheels, a cylinder section to be assembled is supported by the driving wheels and the driven wheels in the assembly process, the cylinder section is driven to rotate through the rotation of the driving wheels, and the cylinder section is driven to axially move through the axial sliding of the driven wheels.

2. The horizontal type circular seam assembling tool for the pressure container according to claim 1, wherein the base is provided with a rocker arm jacking system, the rocker arm jacking system is arranged on the outer sides of the two rows of supporting mechanisms, the rocker arm jacking system comprises a plurality of rocker arm assemblies, the plurality of rocker arm assemblies are distributed at intervals along the longitudinal direction of the base, each rocker arm assembly comprises two rocker arms symmetrically arranged on two sides of the base, the bottom end of each rocker arm is rotatably connected with the base, the top end of each rocker arm is provided with a rotatable top wheel, each rocker arm is driven by a hydraulic cylinder, when the ellipticity of a cylinder section is required to be corrected, the two rocker arms oppositely arranged are driven by the corresponding hydraulic cylinder to rotate, the generated pressure is conducted to the cylinder section through the corresponding top wheel, and the ellipticity is corrected through the top compaction of the cylinder section.

3. The horizontal type circular seam assembling tool for the pressure container according to claim 1, wherein two sets of hydraulic traction systems are arranged on the base, each set of hydraulic traction system comprises a double-head hydraulic cylinder and two iron chains arranged along the longitudinal direction of the base, the double-head hydraulic cylinder is arranged in the middle of the base, the double-head hydraulic cylinder is controlled by the hydraulic control system, two iron chains are respectively fixed at two ends of a piston rod of the double-head hydraulic cylinder, one ends of the two iron chains, far away from the double-head hydraulic cylinder, respectively extend out of the base, a plurality of detachable lifting buckles are arranged on each iron chain, a drag hook is fixed on each lifting buckle, when the position of the lifting buckle is required to be adjusted by the hydraulic traction system to drive a cylinder section on a driven wheel to axially move, the corresponding drag hook is hung on the outer edge of the cylinder section, and the double-head hydraulic cylinder is started to enable the piston rod of the double-head hydraulic cylinder to axially move in the set direction, and then the cylinder section can be driven to axially move.

4. A horizontal type girth assembly tooling for a pressure vessel according to any one of claims 1 to 3, wherein the driving wheel system is erected on a plurality of first steel plates, the plurality of first steel plates are respectively and vertically fixed on the base, two bearing seats are mounted on the top of the plurality of first steel plates, each driving wheel is fixed on a main shaft, the two main shafts are respectively and rotatably mounted on the two bearing seats, the two main shafts are connected through a coupling, a transmission gear is fixed on one main shaft, the transmission gear is connected with the hydraulic motor through the linkage of a multi-stage gear set, the two driven wheel systems are respectively erected on a plurality of second steel plates, the plurality of second steel plates are respectively and vertically fixed on the base, a plurality of shaft sleeves are mounted on the top of the plurality of second steel plates, each driven wheel is axially slidably mounted on an optical axis, and two ends of the optical axis are respectively fixed on the two shaft sleeves.

5. The horizontal type circular seam assembling tool for the pressure vessel according to claim 4, wherein each shaft sleeve is an upper and lower split type shaft sleeve, the lower part of each shaft sleeve is fixed on the top of one second steel plate, and the upper part of each shaft sleeve is detachable.

6. The horizontal circular seam assembling tool for pressure containers of claim 4, wherein each of said optical axes is sleeved with a rubber flexible tube.

7. The horizontal type circular seam assembling tool for the pressure vessel according to claim 4, wherein the inner sides of the first steel plate and the second steel plate which are positioned on the same side of the base are connected together through a strip steel plate, the bottom of the strip steel plate is fixed on the base, and the strip steel plate is inclined to the inner side of the base from top to bottom.