Bent pipe flange welding tool

Abstract

The utility model discloses a bent pipe flange welding tool which comprises a base, a plurality of bearing plates are fixed on the base, each bearing plate is provided with an arc-shaped groove, the bottom connecting lines of the arc-shaped grooves form a virtual arc matched with a bent pipe correspondingly, the outer sides of the middles of the bearing plates are provided with connecting arc-shaped plates, and the connecting arc-shaped plates are connected with the arc-shaped grooves. Positioning plates are detachably arranged on the two sides of the multiple bearing plates on the base in a pluggable mode, and the two positioning plates make contact with the two end faces of the bent pipe correspondingly; the bearing plates are arranged on the base, the arc-shaped grooves are formed in the bearing plates, the positioning plates are arranged on the portions, on the two sides of the bearing plates, of the base, and the two positioning plates make contact with the two end faces of the bent pipe respectively, so that when the flange is welded to the end of the bent pipe, the bent pipe is placed on the bearing plates firstly, then the flange is arranged on the outer side of the end of the bent pipe in a sleeving mode, and the flange is welded to the end of the bent pipe. At the moment, the two end faces of the bent pipe abut against the positioning plate, the flange is attached to the positioning plate, it can be guaranteed that the end faces of the flange are aligned with the two end faces of the bent pipe, deflection of the flange is avoided, and the positioning precision of the flange and the bent pipe is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of elbow flange welding, in particular to an elbow flange welding tool. Background Art

[0002] When welding flanges at both ends of a pipe elbow, a welding tool is generally used to fix the pipe elbow and flange for the convenience of welding. In the prior art, after searching, a utility model patent with a Chinese patent publication number of CN211804602U discloses a pipe elbow flange welding tool, such as Figure 1 As shown, it mainly includes a frame a, on which a clamp body b is provided, one end of the clamp body b is provided with a clamping assembly c, and the other end is provided with a clamping assembly d. When welding, the bent pipe is placed on the clamp body, the flange is placed above the bent pipe port and pressed, and then the staff performs welding.

[0003] In the prior art, the elbow flange welding tooling similar to the above technical solution is found to have the following defects during actual implementation: when the elbow and the flange are positioned and fixed, it is difficult to ensure that the flange plane and the port plane of the elbow are aligned, which easily causes a certain positioning error between the elbow and the flange, thereby reducing the welding quality of the elbow flange. Utility Model Content

[0004] In view of the shortcomings and defects in the prior art, the purpose of the utility model is to provide a bend flange welding tool to solve the problem that when the bend and the flange are positioned and fixed in the prior art, it is difficult to ensure that the flange plane and the port plane of the bend are aligned, which easily causes a certain positioning error between the bend and the flange, thereby reducing the welding quality of the bend flange.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a bent pipe flange welding tool, including a base, on which a plurality of supporting plates are fixed, each of the supporting plates is provided with an arc groove, and the bottom connecting line of the plurality of arc grooves forms a virtual arc corresponding to the bent pipe, and a connecting arc plate is provided on the outer side of the middle part of the plurality of supporting plates. A positioning plate is provided on the base on both sides of the plurality of supporting plates, which can be plugged in and removed, and the two positioning plates are respectively in contact with the two end surfaces of the bent pipe, and the positioning plate is provided with fasteners that can be fastened to the flange.

[0006] As a further improvement of the utility model, a universal wheel is provided at the bottom of the base.

[0007] As a further improvement of the utility model, a slot is provided on the base and the connecting arc plate at the position where the positioning plate is set, and the positioning plate is clamped in the slot.

[0008] As a further improvement of the present invention, a plurality of the supporting plates are arranged in an arc shape on the base.

[0009] As a further improvement of the present invention, the fastener includes a positioning hole provided on the positioning plate, the positioning hole corresponds to the bolt hole of the flange, and the flange is fastened to the positioning plate by bolts passing through the positioning hole.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. By arranging multiple supporting plates on the base, each of the supporting plates is provided with an arc groove, and a positioning plate is provided on the base on both sides of the multiple supporting plates, which can be plugged in and removed. The two positioning plates are in contact with the two end faces of the elbow respectively. When welding the flange on the end of the elbow, first place the elbow in the arc groove on the supporting plate, adjust the elbow, and then put the flange on the outer side of the end of the elbow, and then install the positioning plate on the base. At this time, the two end faces of the elbow are against the positioning plate, and then the flange is moved so that the flange is attached to the positioning plate, and then fixed with fasteners, so as to ensure that the flange end face and the two end faces of the elbow are aligned to avoid flange deflection. The positioning accuracy of the flange and the elbow is relatively high. At this time, welding can be performed at the joint of the flange and the elbow. After welding is completed, the positioning plate can be removed, and then the other side of the flange and the elbow can be welded to complete the welding of the flange and the elbow.

[0012] 2. By setting universal wheels at the bottom of the base, it is convenient to move the base.

[0013] 3. By providing a slot on the base and the connecting arc plate, the positioning plate is clamped in the slot, which facilitates the installation and removal of the positioning plate.

[0014] 4. By setting the fasteners as positioning holes and bolts, disassembly is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 It is a structural schematic diagram of the prior art;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model (excluding the flange on the other side of the elbow);

[0018] In the figure: 1, base; 2, supporting plate; 3, arc groove; 4, connecting arc plate; 5, positioning plate; 6, elbow; 7, flange; 8, slot; 9, positioning hole. DETAILED DESCRIPTION

[0019] The following is combined with Figure 2The utility model is further described in detail. For a clearer illustration, only the structure related to the utility model is shown in the figure.

[0020] For the convenience of description, the coordinate system is defined as Figure 2 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0021] The utility model discloses a welding tool for elbow flange. Figure 2 A pipe elbow flange welding tool comprises a base 1, a universal wheel is provided at the bottom of the base 1 to facilitate the movement of the base 1, a plurality of supporting plates 2 are fixed on the base 1, and the plurality of supporting plates 2 are arranged in an arc shape on the base 1, and an arc groove 3 is provided on each of the supporting plates 2, and the bottom connecting line of the plurality of arc grooves 3 forms a virtual arc corresponding to the pipe elbow 6, and a connecting arc plate 4 is provided on the outer side of the middle of the plurality of supporting plates 2, and a positioning plate 5 is provided on the base 1 on both sides of the plurality of supporting plates 2, which can be plugged in and removed. Specifically, a card slot 8 is provided on the base 1 and the connecting arc plate 4 at the position where the positioning plate 5 is provided, and the positioning plate 5 is stuck in the card slot 8 to facilitate the installation and removal of the positioning plate 5. After the positioning plates 5 are installed, the two positioning plates 5 are in contact with the two end surfaces of the pipe elbow 6 respectively, and the positioning plates 5 are provided with fasteners that can be fastened with the flange 7.

[0022] The fastener includes a positioning hole 9 provided on the positioning plate 5 , and the positioning hole 9 corresponds to the bolt hole of the flange 7 . The flange 7 is fastened to the positioning plate 5 by bolts passing through the positioning hole 9 , so that disassembly is convenient.

[0023] The utility model is provided with a plurality of supporting plates 2 on a base 1, each of which is provided with an arc groove 3, and a positioning plate 5 is provided on the base 1 on both sides of the plurality of supporting plates 2, which can be plugged in and removed. The two positioning plates 5 are in contact with the two end surfaces of the elbow 6 respectively. When welding the flange 7 to the end of the elbow 6, the elbow 6 is first placed in the arc groove 3 on the supporting plate 2, the elbow 6 is adjusted, and then the flange 7 is sleeved on the outer side of the end of the elbow 6, and then the positioning plate 5 is installed on the base 1. At this time, the two end surfaces of the elbow 6 are against the positioning plate 5, and then the flange 7 is moved so that the flange 7 is attached to the positioning plate 5, and then fixed with fasteners, so as to ensure that the end surface of the flange 7 and the two end surfaces of the elbow 6 are aligned to avoid the flange 7 from being skewed. At this time, welding can be performed at the joint of the flange 7 and the elbow 6. After welding is completed, the positioning plate 5 can be removed, and then the flange 7 and the other side of the elbow 6 are welded, and the welding work of the flange 7 and the elbow 6 is completed.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. It should be understood that the specific implementation methods described herein are only used to understand the present utility model, and are not used to limit the present utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.

Claims

1. A pipe elbow flange welding tool, comprising a base, characterized in that: A plurality of supporting plates are fixed on the base, each of which is provided with an arc groove, the bottom connecting line of the plurality of arc grooves forms a virtual arc corresponding to the bent pipe, a connecting arc plate is provided on the outer side of the middle part of the plurality of supporting plates, a positioning plate is provided on the base on both sides of the plurality of supporting plates which can be plugged in and removed, the two positioning plates are in contact with the two end surfaces of the bent pipe respectively, and a fastener that can be fastened to the flange is provided on the positioning plate.

2. The elbow flange welding tool according to claim 1, characterized in that: The bottom of the base is provided with universal wheels.

3. The elbow flange welding tool according to claim 1, characterized in that: A slot is provided on the base and the connecting arc plate at the position where the positioning plate is arranged, and the positioning plate is clamped in the slot.

4. The elbow flange welding tool according to claim 1, characterized in that: The plurality of supporting plates are arranged in an arc shape on the base.

5. A pipe elbow flange welding tool according to any one of claims 1 to 4, characterized in that: The fastener comprises a positioning hole arranged on the positioning plate, the positioning hole corresponds to the bolt hole of the flange, and the flange is fastened and fixed to the positioning plate by bolts passing through the positioning hole.

Images