CN204277189U - For the prolate welding gun of ultra-deep groove narrow-clearance submerged arc welding - Google Patents

Abstract

The utility model discloses a flat and long welding torch for submerged arc welding with ultra-deep groove and narrow gap, which comprises a torch body, a torch head and a conductive tip. The torch body includes a copper plate, and a groove is arranged on one side of the copper plate according to the length direction , a rectangular groove is arranged at one end of the copper plate; the copper plate is two, the grooves of the two copper plates are arranged opposite to form a rectangular central hole, and the rectangular grooves of the two copper plates are arranged opposite to form a rectangular groove; one end of the gun head is a connecting shaft , the other end is a concave clamp block, the width of the notch of the concave clamp block corresponds to the thickness of the gun body; the concave clamp block is clamped at one end of the gun body, and the gun head is connected with the gun body bolt through the concave clamp block The gun head is provided with a gun head center hole passing through the central axis; the conductive tip is long, and one end of the conductive tip is placed in a square groove and connected with the gun body bolt. The welding torch is suitable for deep welding seams, and has low requirements on the minimum width of the welding seam, and realizes submerged arc welding of ultra-deep groove and narrow gap welding seams; reduces the cost of welding materials and saves production costs.

Description

Flat and long welding torch for ultra-deep groove narrow gap submerged arc welding

technical field

The utility model relates to a welding torch, in particular to a flat and long welding torch used for submerged arc welding of ultra-deep grooves with narrow gaps, and belongs to the technical field of welding torches for deep grooves with narrow gaps.

Background technique

With the development of industry, especially in shipbuilding, nuclear power and gasification furnace industries, the requirements for product plate thickness are getting higher and higher, and the depth of weld seam is getting bigger and bigger. Restricted by structural features, the maximum welding depth of existing narrow-gap submerged arc welding torches is only about 300mm, while ordinary cylindrical submerged arc welding torches cannot weld narrow-gap welds.

For example, in the welding of oblique pipes of some gasification furnace shells, the diameter of the connecting pipe is 2600mm, the diameter of the cylinder is 3970mm, the connecting pipe and the cylinder are intersected at a 45° angle, the weld saddle drop is 3800mm, the maximum depth of the weld is 510mm, and the vertical depth is up to 730mm, width 30mm, groove 0.5°; belongs to ultra-deep groove, narrow gap weld. Due to the large depth and narrow width of the weld seam, the slope from the lowest point to the highest point of the weld seam is large, so the weld seam has extremely high requirements on the thickness and length of the welding torch, and the length of the welding torch is required to be not less than 1000mm. Due to structural features, none of the existing welding torches on the market can meet the welding requirements of this product.

Utility model content

The purpose of this utility model is to provide a flat and long welding torch for submerged arc welding of ultra-deep grooves and narrow gaps, to realize submerged arc welding of ultra-deep grooves and narrow gap welds, and to solve the problem of existing ultra-deep slopes. The problem of submerged arc welding of mouth and narrow gap welds, especially the insufficient welding depth of existing narrow gap welding torches, and the inability of ordinary cylindrical submerged arc welding torches to weld narrow gap welds, can effectively solve the above problems There are problems in the technology.

The purpose of this utility model is achieved through the following technical solutions: a flat and long welding torch for ultra-deep groove narrow gap submerged arc welding, including a gun body, a gun head and a conductive tip, and the gun head and the conductive tip are respectively arranged on The two ends of the gun body, the gun body includes a strip-shaped copper plate, a groove is arranged on one side of the copper plate according to the length direction, and a rectangular groove is arranged on one end of the copper plate; there are two copper plates, and the grooves of the two copper plates are set opposite to each other. A rectangular central hole is formed, and the rectangular grooves of the two copper plates are arranged opposite to form a square groove; one end of the gun head is a connecting shaft, and the other end is a concave clamp, and the width of the notch of the concave clamp is the same as the thickness of the gun body. Correspondingly, the concave clamp block is clamped at one end of the gun body, and the gun head is connected with the gun body bolt through the concave clamp block. The gun head is provided with a center hole of the gun head passing through the central axis; One end of the nozzle is placed in a square groove and connected with the bolt of the gun body. The conductive tip is provided with a central hole of the conductive tip; the center lines of the central hole, the central hole of the gun head and the central hole of the conductive tip are on the same straight line.

As a preferred method, a vertical installation hole is provided along the vertical direction on the side of the copper plate provided with a rectangular groove, and a threaded hole corresponding to the vertical installation hole is provided on the contact tip, and the contact tip passes through the screw thread through the installation bolt. The hole and the vertical mounting hole are fixed with the gun body.

As a further preferred mode, a longitudinal installation hole is provided on the side of the copper plate away from the rectangular groove along the longitudinal direction, and a through hole and a screw hole corresponding to the longitudinal installation hole are provided on the concave clamp of the gun head. Holes, longitudinal mounting holes and screw holes are fixed to the gun body.

As a further preferred manner, the concave clamping block on the gun head is in the shape of a cube, and the connecting shaft is in the shape of a cylinder.

Compared with the prior art, the utility model has the beneficial effect: the utility model is used for the flat and long welding torch of ultra-deep groove narrow gap submerged arc welding, which solves the processing problem that the center hole of the gun body belongs to a small and ultra-deep hole, and by This causes a limitation on the length of the gun body; under the condition of ensuring the strength of the gun body, the length of the gun body of this flat and long welding torch can reach more than 1000mm or be infinitely lengthened according to the needs; the thickness of the gun body can reach the minimum, for the welding wire with a diameter of 4mm, The minimum thickness of the torch body can reach about 7mm; the welding torch is suitable for deep weld seams, and has low requirements on the minimum width of the weld seam, thereby realizing submerged arc welding of ultra-deep grooves and narrow gap welds; greatly reducing the cost of welding materials and saving Cost of production.

Description of drawings

Fig. 1 is a schematic structural view of the flat and long welding torch used for ultra-deep groove narrow gap submerged arc welding according to the utility model.

Fig. 2 is a schematic structural view of the gun head in Fig. 1 .

FIG. 3 is a schematic structural diagram of the two copper plates in FIG. 1 .

Figure 4 is a schematic side view of the copper plate.

In the figure: 1-gun body, 2-gun head, 3-center hole of gun body, 4-square groove, 5-conductive tip, 6-installation bolt, 7-conductive tip center hole, 8-bolt, 11- Copper plate, 12-groove, 13-rectangular groove, 14-vertical mounting hole, 15-longitudinal mounting hole, 21-connecting shaft, 22-gun head center hole, 23-concave clamping block, 24-through hole, 25 - screw holes.

Detailed ways

Below in conjunction with specific embodiment the utility model is further described.

All features disclosed in this specification, or steps in all disclosed methods or processes, except for mutually exclusive characteristics and/or steps, can be combined in any way, unless otherwise stated, they can be used by other equivalent or similar Instead, each feature is intended to be replaced by alternative features, that is, each feature is only one embodiment of a series of equivalent or similar features unless stated otherwise.

As shown in Figures 1, 2, 3, and 4, the flat and long welding gun used for ultra-deep groove narrow gap submerged arc welding of the utility model includes a gun body 1, a gun head 2 and a conductive tip 5, and the gun head 2 and a conductive tip 5 are arranged at both ends of the gun body 1 respectively, and realize detachable connection by means of bolt connection.

According to the product weld size and welding process requirements, design and manufacture the torch body, torch head and contact tip of the flat and long welding torch.

Wherein: the gun body 1 comprises a strip-shaped copper plate 11, a groove 12 is set on one side of the copper plate 11 according to the length direction, and one end of the copper plate 11 is provided with a rectangular groove 13; The grooves 12 are arranged oppositely to form a rectangular central hole 3 , and the rectangular grooves 13 of the two copper plates 11 are arranged oppositely to form a square groove 4 . The square groove is used to hold the contact tip.

Make the torch head according to the structural size of the joint between the torch head of the automatic welding machine and the welding torch, as well as the thickness and width of the torch plate. One end of the gun head 2 is a connecting shaft 21, and the other end is a concave clamping block 23. The concave clamping block 23 on the gun head 2 is square, and the connecting shaft 21 is cylindrical. The notch width of concave clamping block 23 corresponds to the thickness of gun body 1, and concave clamping block 23 is clamped on one end of gun body 1, and gun head 2 is connected with gun body 1 bolt by concave clamping block 23, specifically Said, on the side of the copper plate away from the rectangular groove 13, a longitudinal installation hole 15 is provided along the longitudinal direction, and a through hole 24 and a screw hole 25 corresponding to the longitudinal installation hole 15 are provided on the concave clamp block 23 of the gun head. Bolt 8 passes through hole 24, longitudinal installation hole 15 and screw hole 25 and gun body 1 is fixed. The gun head 2 is provided with a gun head central hole 22 passing through the central axis.

The conductive tip 5 is in the shape of a strip, and one end of the conductive tip 5 is placed in the square groove 4 and connected with the gun body 1 by bolts. To the mounting hole 14, a threaded hole corresponding to the vertical mounting hole 14 is provided on the conductive tip 5, and the conductive tip 5 is fixed to the gun body 1 through the threaded hole and the vertical mounting hole 14 through the mounting bolt 6. The contact tip 5 is provided with a contact tip center hole 7; the center lines of the center hole 3, the gun tip center hole 22 and the contact tip center hole 7 are located on the same straight line.

The preparation process of the present utility model is:

Two flat and long welding torch special copper plates of the same size are selected as the gun body. The thickness of the copper plates can be minimized under the premise of ensuring the center hole of the welding wire; a groove is processed in the middle of one side of each copper plate in the length direction, and the size of the groove is Depending on the diameter of the welding wire, two copper plates are put together to form the gun body, and the two grooves in the middle are formed for the welding wire to pass through the central hole. Then, a rectangular groove is opened on the groove side at one end of the two copper plates, so that the two copper plates are put together to form a square groove, and at the square groove, vertical mounting holes symmetrically distributed along the vertical process; the two copper plates The other ends respectively have two longitudinal mounting holes opened along the longitudinal direction for connecting gun heads.

The contact tip is rectangular, with a center hole for the welding wire to pass through, and one end of the contact tip has symmetrically distributed threaded holes; place the contact tip in the square groove of the gun body, and use the mounting bolt to pass through the vertical mounting hole And the threaded hole on the contact tip, the contact tip and the gun body are connected and fixed, and the center hole of the contact tip and the center hole of the gun body are in a straight line.

The gun head is a concave clamping block with a connecting shaft. The width of the groove is equal to the thickness of the gun body. There are corresponding through holes and screw holes on both sides of the concave clamping block. Put the other end of the gun body into the groove and fix it with a bolt. Through the through hole, and the longitudinal mounting hole and the screw hole, the center hole of the gun body and the center hole of the gun head are in a straight line, and the connecting shaft of the head of the groove clamp block is convenient to connect with the equipment.

Install the torch head, torch body and contact tip to form a complete deep groove narrow gap submerged arc welding torch.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. A flat and long welding torch for ultra-deep groove narrow gap submerged arc welding, including torch body (1), torch head (2) and contact tip (5), torch head (2) and contact tip (5) They are respectively arranged at both ends of the gun body (1), and are characterized in that: the gun body (1) includes a strip-shaped copper plate (11), and a groove (12) is arranged on one side of the copper plate (11) according to the length direction, One end of the copper plate (11) is provided with a rectangular groove (13); the copper plate (11) is two, and the grooves (12) of the two copper plates (11) are relatively arranged to form a rectangular central hole (3), and the two copper plates ( The rectangular groove (13) of 11) is arranged oppositely to form a square groove (4); one end of the gun head (2) is a connecting shaft (21), the other end is a concave clamp block (23), and the concave clamp block (23 ) corresponds to the thickness of the gun body (1), the concave clamp (23) is clamped at one end of the gun body (1), and the gun head (2) is connected to the gun body through the concave clamp (23) (1) Bolt connection, the gun head (2) is provided with a gun head center hole (22) passing through the central axis; the conductive tip (5) is long, and one end of the conductive tip (5) is placed in a square groove ( 4) and connected with the gun body (1) with bolts, the contact tip (5) is provided with a contact tip center hole (7); the center hole (3), the gun head center hole (22) and the contact tip center hole (7) The center lines are on the same straight line. 2. The flat and long welding torch for ultra-deep groove narrow gap submerged arc welding according to claim 1, characterized in that: a vertical installation is provided along the vertical direction on the side of the copper plate provided with a rectangular groove (13) Hole (14), the contact tip (5) is provided with a threaded hole corresponding to the vertical installation hole (14), the contact tip (5) passes through the threaded hole and the vertical installation hole (14) through the installation bolt (6) Fix with the gun body (1). 3. The flat and long welding torch for ultra-deep groove narrow gap submerged arc welding according to any one of claims 1 or 2, characterized in that: on the side of the copper plate away from the rectangular groove (13), a longitudinal Mounting hole (15), through-hole (24) and screw hole (25) corresponding to the longitudinal mounting hole (15) are opened on the concave clamping block (23) of the gun head, and the gun head (2) passes through the bolt (8) Pass through the through hole (24), the longitudinal mounting hole (15) and the screw hole (25) and fix it with the gun body (1). 4. The prolate welding torch for ultra-deep groove narrow gap submerged arc welding according to claim 1, characterized in that: the concave clamping block (23) on the torch head (2) is square, and the connecting shaft ( 21) is cylindrical.