A new type of welding auxiliary device for quick-opening pressure vessel

Abstract

The utility model belongs to pressure vessel welding field, concretely is a kind of novel quick-acting door type pressure vessel welding auxiliary device, including fixed base, the fixed base is welded in the middle position of spherical cap head, and with centripetal ball bearing, center seat realizes coaxial stable connection. The center seat is connected with connecting rod by fixed bolt, the connecting rod is welded with balance adjusting seat integrally. The balance adjusting seat and length adjusting screw rod are fixed by adjusting nut, the length adjusting screw rod is welded together with automatic submerged-arc welding trolley. The utility model structure design is reasonable, by rotating center seat and connecting rod, balance adjusting seat, length adjusting screw rod connection, under the centripetal force provided by the automatic welding submerged-arc trolley fixed in the front end of length adjusting screw rod, make it carry out circumferential motion, make automatic welding submerged-arc trolley can better carry out welding to the group of the circumferential weld of spherical cap head and upper flange, compared with the welding of manual arc welding, the design improves the forming and welding speed of weld, improves work efficiency, reduces cost.

Description

Technical Field

[0001] This utility model relates to the field of welding in pressure vessel manufacturing, specifically to a novel welding auxiliary device for flanges and spherical heads on a quick-opening pressure vessel. Background Technology

[0002] When welding the upper flange and spherical head of a quick-opening pressure vessel, traditional manual electric arc welding is usually used. However, this welding method is time-consuming and inefficient. Using an automatic submerged arc welding carriage results in better weld formation and higher efficiency. However, because the bevel between the spherical head and the upper flange has a certain angle and is close to the flange edge, the automatic submerged arc welding carriage has difficulty making stable circular motion at the welding bevel position, which affects the weld formation quality of the upper flange and spherical head of the quick-opening pressure vessel. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a novel welding auxiliary device for quick-opening pressure vessels, used to assist in welding the weld between the upper flange and the spherical head of a quick-opening pressure vessel. During welding by an automatic submerged arc welding trolley, the fixed base is positioned at the center of the spherical head. By adjusting the adjusting nut, the automatic submerged arc welding trolley at the end of the fixed nut is pulled by an axial connecting rod to perform a circular motion above the weld bead, thereby welding the weld between the upper flange and the spherical head of the quick-opening pressure vessel. This improves upon the problems of poor weld quality and low welding efficiency caused by traditional manual arc welding.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A novel quick-opening pressure vessel welding auxiliary device mainly consists of a fixed base, a radial ball bearing, a central seat, fixing bolts, a connecting rod, a balance adjustment seat, a length adjustment screw, an adjusting nut, and a fixing nut. The fixed base is fixed to the center of a spherical head, and the fixed base, radial ball bearing, and central seat are coaxially connected. The central seat and connecting rod are fixed together by fixing bolts. The front end of the connecting rod is welded to the balance adjustment seat. Each end of the balance adjustment seat is connected to a length adjustment screw. Each length adjustment screw has two adjusting nuts. The front end of the length adjustment screw is welded to an automatic submerged arc welding carriage, and the carriage's position can be adjusted using the length adjustment screw and adjusting nuts.

[0006] Preferably, the fixing base is made of hollow cylindrical metal material. The fixing base has good weldability, as well as good rigidity and strength, and can be firmly fixed at the center position of the spherical cap, effectively providing the centripetal force required during the welding process.

[0007] Preferably, the radial ball bearing has the ability to withstand large radial loads, which can significantly reduce friction in circumferential motion, thereby reducing the resistance of the welding carriage in circumferential motion and ensuring its smooth operation.

[0008] Preferably, the fixed base has a groove to restrict the displacement of the centripetal ball bearing.

[0009] Preferably, the central support is coaxially connected to the radial ball bearing and the fixed base.

[0010] Preferably, the rotating center seat has a suitable weight and good rigidity and strength.

[0011] Preferably, the connecting rod is made of channel steel, which has a certain rigidity and is lightweight and easy to handle.

[0012] Preferably, the length adjusting screw is connected to both ends of the balance adjusting seat. By adjusting the adjusting nut, the welding position can be finely adjusted to achieve a better welding effect.

[0013] This utility model has the following beneficial effects:

[0014] This utility model describes a novel welding auxiliary device for quick-opening pressure vessels. This device enables an automatic submerged arc welding trolley to move in a circular motion above the weld bead under the traction of an axial connecting rod, thereby performing welding of the flange and spherical head weld of the quick-opening pressure vessel. This improves welding quality and speed while reducing the labor intensity of operators. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0017] In the figure, (1) - fixed base, (2) - radial ball bearing, (3) - rotation center seat, (4) - fixing bolt, (5) - connecting rod, (6) - balance adjustment seat, (7) - length adjustment screw, (8) - adjusting nut Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 A novel quick-opening pressure vessel welding auxiliary device includes a fixed base (1), which is welded and fixed to a spherical head. The fixed base (1) is coaxially connected to a rotating center seat (3) by a radial ball bearing (2). The center seat (3) is fastened to a connecting rod (5) by a fixing bolt (4). The other end of the connecting rod (5) is welded to a balance adjustment seat (8). Both ends of the balance adjustment seat (8) are connected to length adjustment screws (7). The length adjustment screws (7) are fixed on the balance adjustment seat (8) by adjusting nuts (8). The front end of the length adjustment screws (7) is fixedly connected to an automatic submerged arc welding carriage, so that the automatic submerged arc welding carriage is less likely to deviate from its trajectory during the welding process.

[0020] The fixed base (1) has a groove to prevent the radial ball bearing (2) from shifting. The center seat (3) is coaxially connected with the radial ball bearing (2) and the fixed base (1) so that the center seat (3) always keeps the rotation center unchanged when it rotates.

[0021] The connecting rod (5) is securely connected to the center seat (3) by two fixing bolts (4). The front end of the connecting rod (5) is fixedly connected to the balance adjustment seat (8). The two ends of the balance adjustment seat (8) are provided with fixing holes to limit the displacement of the length adjustment screw (7). The length adjustment screw (7) passes through the fixing hole. The fixed position of the length adjustment screw (7) is determined by adjusting the adjusting nut (8), so that the wire feed head of the automatic submerged arc welding carriage fixedly connected to the front end of the length adjustment screw (7) coincides with the weld bead.

[0022] When using this utility model, first fix the fixed base (1) at the center of the end cap, and connect the radial ball bearing (2) and the center seat (3) coaxially with the fixed base (1). Then fix the connecting rod (5) on the center seat (3) by fixing bolts (4). Adjust the adjusting nut (8) to fix the length adjusting screw (7) at both ends of the balance adjusting seat (8). Determine the position of the automatic submerged arc welding carriage fixed at the front end of the length adjusting screw (7) so that the welding torch coincides with the weld. Finally, start the automatic submerged arc welding carriage. The automatic submerged arc welding carriage provides forward power, and the connecting rod (5) provides centripetal force centered on the central axis, so that the automatic submerged arc welding carriage makes circular motion to perform welding.

[0023] This utility model simplifies the welding method, solving the problem that the flange and spherical head welds on quick-opening pressure vessels can only be welded by manual arc welding. By replacing manual arc welding with submerged arc welding, the forming and welding speed of the weld are improved, work efficiency is increased, and labor costs are reduced.

[0024] Finally, the dimensions in the attached drawings are not related to the actual object. The actual object dimensions can be modified accordingly based on the specifications of the spherical head and the upper flange.

Claims

1. A novel quick-opening pressure vessel welding auxiliary device, comprising a fixed base (1), characterized in that, The fixed base (1) is precisely welded to the middle position of the spherical head. The fixed base (1) is stably connected to the center seat (3) through the radial ball bearing (2). The center seat (3) is connected to the connecting rod (5) by means of the fixing bolt (4). The connecting rod (5) is welded to the balance adjustment seat (6) as a whole. The balance adjustment seat (6) and the length adjustment screw (7) are fixed by the adjusting nut (8). The length adjustment screw (7) is welded together with the automatic submerged arc welding carriage.

2. The novel quick-opening pressure vessel welding auxiliary device according to claim 1, characterized in that: The fixed base (1) has a groove to limit the displacement of the radial ball bearing, and the fixed base (1) is welded to the center position of the spherical head.

3. The novel quick-opening pressure vessel welding auxiliary device according to claim 1, characterized in that: The central seat (3) is coaxially connected to the radial ball bearing (2) and the fixed base (1).

4. The novel quick-opening pressure vessel welding auxiliary device according to claim 1, characterized in that: The connecting rod (5) and the center seat (3) are securely connected by fixing bolts (4).

5. The novel quick-opening pressure vessel welding auxiliary device according to claim 1, characterized in that: The balance adjustment seat (6) and the length adjustment screw (7) are fixed together by the adjustment nut (8). The position of the length adjustment screw (7) is precisely adjusted by the adjustment nut to achieve the required welding path.

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