CN213438093U

CN213438093U - Pressure vessel group is to welding set

Info

Publication number: CN213438093U
Application number: CN202022393985.2U
Authority: CN
Inventors: 李汉祥
Original assignee: Nanjing Huiyu Automation Co ltd
Current assignee: Nanjing Huiyu Automation Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-06-15
Anticipated expiration: 2030-10-26

Abstract

A pressure vessel assembly welding device comprises a main body, a welding device and a welding device, wherein the main body consists of a base, a lifting platform, a roller carrier, a head chuck, a tail pressing chuck, a supporting seat, a hydraulic cylinder, a portal frame and a side pressing mechanism; the base is horizontally and fixedly placed, the headstock and the supporting seat are fixedly installed at two ends of the base respectively, the portal frame guide rails are installed at two sides of the base, the portal frame can move along the portal frame guide rails, the horizontal guide rails are installed above the middle of the base, and the lifting platform can move along the horizontal guide rails; the front end of the rotating shaft on the headstock is provided with a driving chuck and a baffle plate, and the tail end of the driving chuck is connected with a rotary driving motor; the tailstock can move along the horizontal guide rail and is provided with a driven shaft, the front end of the driven shaft is fixedly connected with the driven chuck, the jacking plate is fixed on the driven chuck, and the tail end of the driven shaft is connected with the rotary joint; a hydraulic cylinder telescopic shaft of a hydraulic cylinder on the supporting seat is connected with the tailstock; lateral pressing mechanisms are installed on the left side and the right side of the portal frame. The pressure container with large pipe diameter and large length can be assembled and welded by adopting a horizontal assembling method.

Description

Pressure vessel group is to welding set

Technical Field

The invention belongs to the field of welding of pressure vessels, and particularly relates to a pressure vessel assembly welding device.

Background

The pressure container generally comprises a middle cylinder and end sockets at two ends, when the pressure container is produced, the end sockets are required to be sleeved into the cylinder, the cylinder and the end sockets are spliced together by spot welding to form a whole, and then girth welding is carried out on a gap at the joint. At present, the tailor welding of the pressure container mostly adopts a vertical tailor welding mode, the cylinder body is erected to be placed on the ground, and spot welding is carried out on the periphery of the cylinder body after the seal head is vertically sleeved into the cylinder body. The method has the disadvantages that for the cylinder with large pipe diameter, workers need to rotate around the cylinder for spot welding for a large circle, meanwhile, for the cylinder with large length, the workers need to climb high to carry out high-altitude operation, which is dangerous, and for the cylinder with partial overlong length, the workshop height is limited or the crane height is limited, so that the vertical assembly method cannot be used at all. Therefore, the horizontal assembly mode is adopted for the pressure container with large length and large pipe diameter. In the horizontal assembling process, the cylinder body deforms under the action of gravity, and the end socket is sleeved into the cylinder body difficultly.

Disclosure of Invention

In order to solve the assembly welding problem of the pressure container with large pipe diameter and large length, the invention provides a pressure container assembly welding device, which can assemble and weld the pressure container with large pipe diameter and large length by adopting a horizontal assembly method.

The technical scheme is as follows: a pressure vessel assembly welding device comprises a main body, a welding device and a welding device, wherein the main body consists of a base, a lifting platform, a roller carrier, a head chuck, a tail pressing chuck, a supporting seat, a hydraulic cylinder, a portal frame and a side pressing mechanism; the base is horizontally and fixedly placed, the headstock and the supporting seat are fixedly installed at two ends of the base respectively, the portal frame guide rails are installed at two sides of the base, the portal frame is installed on the portal frame guide rails and can move along the portal frame guide rails, the horizontal guide rails are installed above the middle of the base and are parallel to the portal frame guide rails, and the lifting platform is installed on the horizontal guide rails and can move along the horizontal guide rails; the lifting platform can do lifting movement; the headstock is provided with a rotating shaft, the rotating shaft is parallel to the horizontal guide rail, two ends of the rotating shaft extend out of the headstock, a driving chuck and a baffle plate which are arranged at the front end of the rotating shaft can perform 360-degree rotary motion on the headstock along with the rotating shaft, the tail end of the rotating shaft is connected with an output shaft of a rotary driving motor which is fixed on the headstock, and the rotary driving motor can drive the rotating shaft to rotate on the headstock; the tail seat is arranged on the horizontal guide rail and can move along the horizontal guide rail, the driven shaft is arranged on the tail seat, the driven shaft is parallel to the horizontal guide rail, two ends of the driven shaft extend out of the tail seat, the front end of the driven shaft is fixedly connected with the driven chuck, the jacking plate is fixed on the driven chuck, the tail end of the driven shaft is connected with the rotary joint, and the jacking plate, the driven chuck and the rotary joint can perform 360-degree rotary motion on the tail seat along with the driven shaft; a hydraulic cylinder is arranged on the supporting seat, and a hydraulic cylinder telescopic shaft of the hydraulic cylinder is connected with the tailstock; lateral pressing mechanisms are installed on the left side and the right side of the portal frame.

Preferably, the lifting platform consists of a screw rod lifter, a lifting guide rod, a lifter base and a roller carrier, the screw rod lifter and the guide rod are fixed at the bottom of the roller carrier, the guide rod and the roller carrier can move up and down along with the screw rod lifter, the screw rod lifter is fixed on the lifter base, the lower part of the guide rod is just inserted into the lifter base, the shaking of the lifting platform in the lifting motion process is reduced, and the lifter base is installed on the horizontal guide rail and can move along the horizontal guide rail.

Preferably, the front end of the electric screw press in the side pressing mechanism is fixedly connected with the press guide rod through the connecting plate, the press guide rod can stretch out and draw back simultaneously along with the electric screw press, and the press guide rod penetrates through the portal frame to reduce the shaking in the working process of the electric screw press.

The nylon block is arranged on the preferable connecting plate, so that the surface of the workpiece can be protected from being crushed.

The beneficial effect of this patent is that can adopt the method of horizontal assembly to assemble the pressure vessel of welding big pipe diameter and big length.

Drawings

Fig. 1 is a structural layout diagram of the present invention.

Fig. 2 is a longitudinal section of the gantry of the present invention when the gantry is overlapped with the lifting platform.

In the figure, 1-base, 2-portal frame guide rail, 3-horizontal guide rail, 4-screw rod lifter, 5-lifting guide rod, 6-lifter base, 7-roller frame, 8-left end socket, 9-cylinder, 10-right end socket, 11-screw rod lifter motor, 12-head socket, 13-rotary driving motor, 14-driving chuck, 15-baffle, 16-puller plate, 17-driven chuck, 18-tailstock, 19-swivel joint, 20-support seat, 21-hydraulic cylinder, 22-hydraulic cylinder telescopic shaft, 23-electric screw press, 24-press guide rod, 25-connecting plate and 26-portal frame, wherein the left end enclosure, the cylinder body and the right end enclosure form a department of pressure vessel structure.

Detailed Description

The cylinder body is placed on the roller frame, the screw rod lifter of the lifting platform is started, the center height of the cylinder body is adjusted to enable the cylinder body to be concentric with the driving chuck and the driven chuck, then the right end socket is hung in the cylinder body, the driven chuck is started to grasp the right end socket when the top end of the right end socket contacts the jacking plate, the hydraulic cylinder is started to enable the telescopic shaft of the hydraulic cylinder to extend, the tailstock and the driven chuck are pushed to move forwards, the jacking plate is driven to push the right end socket and the cylinder body to move forwards, and the lower lifting platform and the roller frame also integrally move towards the headstock along the horizontal guide rail. When the cylinder body contacts the baffle, the movement is stopped, the roller carrier also stops moving, at the moment, the hydraulic cylinder continues to push the right seal head to move forwards, and the conical opening of the right seal head is slowly inserted into the cylinder body under the action of the rear thrust. The cylinder body is deformed under the action of gravity, is not in a standard round shape, and the end enclosure can not be inserted, at the moment, the portal frame is moved to the position near the right end opening of the cylinder body to be inserted into the right end enclosure cylinder, the electric screw rod press is started, the side pressing mechanism is enabled to tightly press the position near the right end opening of the cylinder body, the right end opening of the cylinder body is changed into a round shape through extrusion, the right end enclosure is conveniently inserted, and the cylinder body and the right end enclosure are welded together through spot welding when the. After spot welding is finished, the lateral pressing mechanism is loosened, the barrel is rotated, and then spot welding of other parts is carried out. And when the right end socket is welded and connected with the cylinder body, starting the hydraulic cylinder, retracting the telescopic shaft of the hydraulic cylinder, pulling the tail seat and the driven chuck as well as the cylinder body and the roller frame to move backwards integrally, and separating the cylinder body from the baffle until the telescopic shaft of the hydraulic cylinder stops moving. At the moment, the left end socket is hung, the driving chuck clamps the left end socket, the hydraulic cylinder is started, the telescopic shaft of the hydraulic cylinder moves forwards, the whole cylinder moves forwards, and the cylinder is slowly inserted into the left end socket. And at the moment, the portal frame is moved to a position near a left port of the cylinder body to be inserted into the left end socket cylinder, the electric screw press is started to enable the side pressing mechanism to tightly press a position near the left port of the cylinder body, the left port of the cylinder body is changed into a round shape through extrusion to facilitate the insertion of the left end socket, after the end socket is completely inserted, the left end socket and the cylinder body are spot-welded together, and then the side pressing mechanism is loosened. And finally, starting a rotary driving motor to enable a driving chuck to drive the whole tank body to rotate, carrying out girth welding on the end sockets on two sides by using an operating machine, after the end sockets are welded, firstly loosening the driving chuck, then starting a hydraulic cylinder, retracting a telescopic shaft of the hydraulic cylinder, pulling a tailstock, a driven chuck and the tank body to move backwards, waiting for the left end socket to completely leave the driving chuck, stopping the hydraulic cylinder, loosening the driven chuck at the moment, then starting the hydraulic cylinder, pulling the tailstock to move backwards integrally until the telescopic shaft of the hydraulic cylinder retracts completely and stops moving, then hanging the welded tank body downwards, and repeating the operations to carry out the tailor welding work of the next tank body.

Claims

1. A pressure vessel assembly welding device is characterized in that a main body of the device consists of a base, a lifting platform, a roller frame, a head chuck, a tail pressing chuck, a supporting seat, a hydraulic cylinder, a portal frame and a side pressing mechanism; the base is horizontally and fixedly placed, the headstock and the supporting seat are fixedly installed at two ends of the base respectively, the portal frame guide rails are installed at two sides of the base, the portal frame is installed on the portal frame guide rails and can move along the portal frame guide rails, the horizontal guide rails are installed above the middle of the base and are parallel to the portal frame guide rails, and the lifting platform is installed on the horizontal guide rails and can move along the horizontal guide rails; the lifting platform can do lifting movement; the headstock is provided with a rotating shaft, the rotating shaft is parallel to the horizontal guide rail, two ends of the rotating shaft extend out of the headstock, a driving chuck and a baffle plate which are arranged at the front end of the rotating shaft can perform 360-degree rotary motion on the headstock along with the rotating shaft, the tail end of the rotating shaft is connected with an output shaft of a rotary driving motor which is fixed on the headstock, and the rotary driving motor can drive the rotating shaft to rotate on the headstock; the tail seat is arranged on the horizontal guide rail and can move along the horizontal guide rail, the driven shaft is arranged on the tail seat, the driven shaft is parallel to the horizontal guide rail, two ends of the driven shaft extend out of the tail seat, the front end of the driven shaft is fixedly connected with the driven chuck, the jacking plate is fixed on the driven chuck, the tail end of the driven shaft is connected with the rotary joint, and the jacking plate, the driven chuck and the rotary joint can perform 360-degree rotary motion on the tail seat along with the driven shaft; a hydraulic cylinder is arranged on the supporting seat, and a hydraulic cylinder telescopic shaft of the hydraulic cylinder is connected with the tailstock; lateral pressing mechanisms are installed on the left side and the right side of the portal frame.

2. The assembly welding device of claim 1, wherein: the lifting platform consists of a screw rod lifter, a lifting guide rod, a lifter base and a roller carrier, wherein the screw rod lifter and the guide rod are fixed at the bottom of the roller carrier, the guide rod and the roller carrier can do lifting motion along with the screw rod lifter, the screw rod lifter is fixed on the lifter base, the lower part of the guide rod is just inserted into the lifter base, the lifting platform is reduced to shake in the lifting motion process, and the lifter base is installed on a horizontal guide rail and can move along the horizontal guide rail.

3. A pressure vessel pair butt welding apparatus as claimed in claim 1 or 2, wherein: the front end of the electric screw press in the side pressing mechanism is fixedly connected with the press guide rod through the connecting plate, the press guide rod can stretch out and draw back simultaneously along with the electric screw press, the press guide rod penetrates through the portal frame, and the shaking in the working process of the electric screw press is reduced.

4. The assembly welding device of claim 3, wherein: the nylon block is arranged on the connecting plate, so that the surface of the workpiece can be protected from being crushed.