Self-rotation welding auxiliary device for pipe fittings

Abstract

The utility model discloses a pipe fitting autorotation welding auxiliary device, belongs to the field of pipe fitting butt joint, and aims to improve the welding efficiency. Comprising two rotating lifting frames arranged on the left side and the right side in the transverse direction. The rotating lifting frame comprises a supporting platform and two rotating shafts arranged side by side, the rotating shafts are horizontally arranged, the two ends of each rotating shaft are rotationally installed on the supporting platform through bearings, a gap is formed between the two rotating shafts, and a motor for driving the rotating shafts to rotate is arranged between the two rotating shafts; a lifting area for lifting a pipe fitting is formed between the two rotating shafts; the rotating shafts of the rotating lifting frames on the left side and the right side are centered. The rotating shaft rotates to drive the pipe fitting to rotate at a certain speed, so that the operation of manually adjusting a welding point while welding is avoided, the welding precision is improved, manpower is saved, and the welding efficiency is greatly improved. And the safety risk caused by manual welding point adjustment is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of pipe fitting butt joints, specifically an auxiliary device for self-rotating welding of pipe fittings. Background Art

[0002] With the implementation of large-scale construction projects, especially for high-temperature and high-pressure operation projects, the workload of welding pipe fittings of the same type of thick-walled short pipes is large and the welding quality requirements are high. The same type of thick-walled short pipes refers to pipe fittings with the same material, the same pipe fitting type, and basically the same pipe wall thickness. The length of the pipe fittings is within 500 mm and the wall thickness is greater than 10 mm. For example Figure 1 The shown same type of welded pipe fittings includes pipe section one 6, pipe section two 7, and pipe section three 8. Between pipe section one 6 and pipe section two 7 is through a weld, and between pipe section two 7 and pipe section three 8 is butt-jointed through a weld. The diameters of pipe section one 6, pipe section two 7, and pipe three 8 can be equal or not equal.

[0003] Previously, for this type of work, a simple combined bracket was generally used. The pipe fittings to be welded were placed on the combined bracket, and the welding points were manually adjusted while welding. Since there are many welds in this type of operation and the welding workload is large, it is necessary to increase the number of welders and supporting workers to meet the large amount of welding work. However, manually adjusting the welding points has a large workload and low work efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide an auxiliary device for self-rotating welding of pipe fittings to improve the welding efficiency.

[0005] The technical solution adopted by the utility model is: an auxiliary device for self-rotating welding of pipe fittings, including two sets of rotating lifting frames for separately lifting one pipe fitting, which are horizontally arranged on the left and right sides, and several sets of clamping blocks for temporarily welding two pipe fittings into one body; the rotating lifting frame includes a support platform and two rotating shafts arranged side by side. The rotating shafts are horizontally arranged and both ends are rotationally installed on the support platform through bearings. There is a spacing between the two rotating shafts and a motor for driving the rotation of the rotating shafts is provided; between the two rotating shafts forms a lifting area for lifting the pipe fitting; the rotating shafts of the rotating lifting frames on the left and right sides are arranged in alignment; the several sets of clamping blocks are arranged independently of the rotating lifting frames.

[0006] Further, one motor is configured for one rotating shaft.

[0007] Further, each rotating shaft is installed on the support platform through a support; the support includes a horizontally arranged bottom plate and vertically arranged ear plates arranged along the axial direction of the rotating shaft at both ends of the rotating shaft. The bottom end of the ear plate is fixed to the bottom plate. The rotating shaft is located between the two ear plates and both ends are rotationally installed on the ear plates through bearings.

[0008] Further, the bottom plate extends the ear plates along both sides of the axial direction of the rotating shaft, and the part where the bottom plate extends the ear plates is bolted to the support platform.

[0009] Further, a reinforcing plate is provided between the portion of the bottom plate extending laterally to form the ear plate and the ear plate.

[0010] Further, a reinforcing connecting plate is fixed between the two ear plates on the support.

[0011] Further, the motor is located laterally outside the rotating shaft. The motor is mounted on the bottom plate through a motor mounting seat, and the motor and the rotating shaft are connected by belt drive.

[0012] Further, there are four clamping blocks, and the clamping blocks are steel plates made of the same type of material as the pipe fittings.

[0013] The beneficial effects of the present utility model are as follows: The pipe fitting self-rotation welding auxiliary device disclosed by the present utility model drives the pipe fitting to rotate at a certain rate through the rotation of the rotating shaft, avoiding the operation of manually adjusting the welding point during welding, improving the welding accuracy, saving labor and greatly improving the welding efficiency. Moreover, the safety risk existing in manually adjusting the welding point is reduced.

[0014] After assembling two pipe fittings into one body through the clamping blocks, the two ends are placed on the rotating lifting brackets on the left and right sides for welding, so that two pipe fittings can be welded in one round, further improving the welding efficiency. Moreover, after the two pipe fittings are temporarily butted, both ends are lifted by the rotating lifting brackets, and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a pipe fitting;

[0016] Figure 2 is a schematic diagram of welding pipe fittings using the present utility model;

[0017] Figure 3 is a left view of the present utility model.

[0018] In the figure, support platform 1, rotating shaft 2, motor 3, support 4, bottom plate 41, ear plate 42, reinforcing plate 43, reinforcing connecting plate 44, motor mounting seat 5, pipe section one 6, pipe section two 7, pipe section three 8, clamping block 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0020] In the present utility model, terms such as "lateral", "vertical", "longitudinal", "above", "below", "top", "upper part", "bottom end", "bottom", "inner side", "outer side", "left", and "right" indicate the orientation or positional relationship based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0021] The pipe fitting self-rotation welding auxiliary device, such as Figure 2 and Figure 3 shown, includes two sets of rotating lifting frames for separately lifting a pipe fitting, which are located on the left and right sides along the transverse direction, and several sets of clamping blocks 9 for temporarily welding two pipe fittings into one body; the rotating lifting frame includes a support platform 1 and two coaxial shafts 2 arranged side by side, the coaxial shafts 2 are horizontally arranged and both ends are rotatably installed on the support platform 1 through bearings, a distance is provided between the two coaxial shafts 2 and a motor 3 for driving the coaxial shafts 2 to rotate is provided; a lifting area for lifting the pipe fitting is formed between the two coaxial shafts 2; the coaxial shafts 2 of the rotating lifting frames on the left and right sides are arranged in alignment.

[0022] Among them, the coaxial shafts 2 of the rotating lifting frames on the left and right sides being arranged in alignment means that the coaxial shaft 2 located inside along the longitudinal direction among the two coaxial shafts 2 on the left side is coaxial with the coaxial shaft 2 located inside along the longitudinal direction among the two coaxial shafts 2 on the right side, and the coaxial shaft 2 located outside along the longitudinal direction among the two coaxial shafts 2 on the left side is coaxial with the coaxial shaft 2 located outside along the longitudinal direction among the two coaxial shafts 2 on the right side. The two coaxial shafts 2 arranged side by side mean that the two coaxial shafts 2 have the same specifications and their axes are on the same horizontal plane. The lifting area formed between the two coaxial shafts 2 is used to place the pipe fitting. After the pipe fitting is placed in the lifting area, it contacts the two coaxial shafts 2, and the two coaxial shafts 2 jointly lift the pipe fitting. Under the rotation of the motor 3, all the coaxial shafts 2 are driven to rotate in the same direction, and relying on the frictional force between the coaxial shafts 2 and the outer wall of the pipe fitting, the pipe fitting is driven to rotate accordingly. The welding worker or the automatic welding equipment is fixed at the same position beside the pipe fitting to perform semi-automatic or full-automatic welding on the butt weld position.

[0023] Since the length of the pipe fitting is relatively short, less than 500 mm, it is difficult to lift it from both ends. In this embodiment, the form of assembling two pipe fittings together is adopted to increase the span of the pipe fitting, so that the two ends of the two pipe fittings assembled into one body are located on the rotating lifting frames on the left and right sides, and the clamping blocks 9 are used to temporarily weld the two pipe fittings into one body. For the convenience of manufacturing, the clamping blocks 9 are cut from steel plates of the same type of material as the pipe fitting. The left end of the clamping block 9 is spot-welded to the outer wall of the left pipe fitting, and the right end is spot-welded to the outer wall of the right pipe fitting. Usually, four clamping blocks 9 are provided, and the four clamping blocks are evenly distributed along the circumferential direction of the pipe fitting. One round of welding two pipe fittings is completed, further improving the welding efficiency. Moreover, both ends of the two pipe fittings are lifted by the rotating lifting frames after temporary butt joint, and the safety is high.

[0024] The pipe fitting self-rotating welding auxiliary device disclosed by the utility model drives the pipe fitting to rotate at a certain speed by the rotation of the rotating shaft 2, avoiding the operation of manually adjusting the welding point during welding, improving the welding precision, saving labor and greatly improving the welding efficiency. Moreover, it reduces the safety risks existing in manually adjusting the welding point.

[0025] A linkage structure can be set to connect each rotating shaft 2 and be driven by one motor, so that each rotating shaft 2 is linked. However, this will inevitably cause the structure to be complicated and not convenient for later maintenance. To avoid this problem, preferably, one motor 3 is configured for one rotating shaft 2.

[0026] The support platform 1 is fixed on the concrete floor by anchor bolts or the like. Each rotating shaft 2 is installed on the support platform 1 through a support 4; the support 4 includes a horizontally arranged bottom plate 41 and vertically arranged ear plates 42 arranged at both ends of the rotating shaft 2 along the axial direction of the rotating shaft 2. The bottom end of the ear plate 42 is fixed on the bottom plate 41. The rotating shaft 2 is located between the two ear plates 42 and is rotatably installed on the ear plates 42 through bearings at both ends, ensuring smooth operation of the rotating shaft 2 with low operating resistance.

[0027] The support 4 can be welded to the support platform 1 or detachably connected to the support platform 1. In this embodiment, the ear plates 42 extend out from both sides of the bottom plate 41 along the axial direction of the rotating shaft 2, and the part of the bottom plate 41 extending out the ear plates 42 is connected to the support platform 1 through bolts.

[0028] To strengthen the installation of the ear plates 42, a reinforcing plate 43 is arranged between the part of the bottom plate 41 extending out the ear plates 42 and the ear plates 42 along the transverse direction.

[0029] To further strengthen and improve the stable reliability of the rotational installation of the rotating shaft 2, a reinforcing connecting plate 44 is fixed between the two ear plates 42 on the support 4.

[0030] To save area and simplify the structure, preferably, the motor 3 is located outside the rotating shaft 2 along the transverse direction. The motor 3 is installed on the bottom plate 41 through a motor mounting seat 5, and the motor 3 is connected to the rotating shaft 2 through belt drive.

[0031] The process of welding pipe fittings by using this pipe fitting self-rotating welding auxiliary device is as follows:

[0032] As Figure 1 shown, the pipe fitting includes a pipe section one 6, a pipe section two 7, and a pipe section three 8. The pipe section one 6 and the pipe section two 7 are butt-jointed through a weld, and the pipe section two 7 and the pipe section three 8 are butt-jointed through a weld. The length of the pipe fitting does not exceed 500 mm.

[0033] The operation steps are as follows:

[0034] First, spot weld the welds between pipe section 6 of the pipe fitting to be welded, pipe section 7, and between pipe section 7 and pipe section 8, temporarily assembling pipe section 6, pipe section 7, and pipe section 8 into one body.

[0035] Then, if the length of the pipe fitting is too short to span across the left and right rotating lifting frames, a form of cooperation of two pipe fittings to be welded is adopted, that is: one of the pipe fittings to be welded is hoisted onto the left rotating lifting frame, so that its pipe section 6 is located between the two rotating shafts 2 of the left rotating lifting frame; the other pipe fitting to be welded is hoisted onto the right rotating lifting frame, so that its pipe section 6 is located between the two rotating shafts 2 of the left rotating lifting frame; the pipe sections 8 of the two pipe fittings to be welded are arranged adjacent to each other, and four sets of clamping blocks are evenly connected circumferentially by spot welding between the pipe sections 8 of the two pipe fittings to be welded, temporarily assembling the two pipe fittings to be welded into a whole so that they can rotate together.

[0036] Finally, the welder or the automatic welding equipment is fixed at the same position for welding. Start the motor 3 to rotate at a certain speed, drive all the rotating shafts 2 to rotate, drive the pipe fitting to rotate together, and complete the welding during the rotation. When welding, after one weld seam is welded, the welder or the automatic welding equipment can be moved and fixed at another place for welding the next weld seam, or welders or automatic welding equipment can be arranged at two, three, etc. weld seams respectively, and multiple weld seams can be welded simultaneously.

[0037] Of course, the technical solution disclosed in this application is not limited to Figure 1 the welding of the pipe fittings shown, and is also applicable to the welding of pipe fittings with other shapes and other numbers of weld seams, such as the case where the pipe fitting is welded by two pipe sections, the case where the pipe fitting is welded by four pipe sections, and the shape of each pipe section can be cylindrical or cylindrical.

Claims

1. Pipe fitting self-rotation welding auxiliary device, characterized by: The invention comprises two sets of rotating lifting frames separated on the left and right sides in the transverse direction for lifting a pipe fitting separately, and several sets of clamping blocks (9) for temporarily welding two pipe fittings into one; the rotating lifting frame comprises a supporting platform (1) and two rotating shafts (2) arranged side by side, the rotating shafts (2) are arranged horizontally and are rotatably mounted on the supporting platform (1) at both ends through bearings, a spacing is arranged between the two rotating shafts (2) and a motor (3) is arranged to drive the rotating shafts (2) to rotate; a lifting area for lifting the pipe fitting is formed between the two rotating shafts (2); the rotating shafts (2) of the rotating lifting frames on the left and right sides are arranged in a central manner; and the several sets of clamping blocks (9) are arranged independently of the rotating lifting frame.

2. The pipe self-rotation welding auxiliary device according to claim 1, characterized in that: A rotating shaft (2) is equipped with a motor (3).

3. The pipe self-rotation welding auxiliary device according to claim 1 or 2, characterized in that: Each rotating shaft (2) is installed on the supporting platform (1) through a support (4); the support (4) comprises a horizontally arranged bottom plate (41) and vertically arranged ear plates (42) arranged at both ends of the rotating shaft (2) along the axial direction of the rotating shaft (2); the bottom end of the ear plate (42) is fixed to the bottom plate (41); the rotating shaft (2) is located between the two ear plates (42), and the two ends are rotatably installed on the ear plates (42) through bearings.

4. The pipe self-rotation welding auxiliary device according to claim 3, characterized in that: Ear plates (42) extend from both sides of the base plate (41) axially along the rotating shaft (2), and the portion of the base plate (41) extending from the ear plates (42) is connected to the supporting platform (1) via bolts.

5. The pipe self-rotation welding auxiliary device according to claim 4, characterized in that: A reinforcing plate (43) is arranged between a portion of the bottom plate (41) extending out of the ear plate (42) and the ear plate (42) in the transverse direction.

6. The pipe self-rotation welding auxiliary device according to claim 3, characterized in that: A reinforcing connecting plate (44) is fixed between the two ear plates (42) on the support (4).

7. The pipe self-rotation welding auxiliary device according to claim 6, characterized in that: The motor (3) is located outside the rotating shaft (2) in the transverse direction. The motor (3) is mounted on the bottom plate (41) via a motor mounting seat (5). The motor (3) and the rotating shaft (2) are connected via a belt drive.

8. The pipe self-rotation welding auxiliary device according to claim 1 or 2, characterized in that: The clamping blocks (9) have four clamping blocks (9) which are steel plates made of the same material as the pipe fittings.

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