Turbine shell welding device

Abstract

The utility model discloses a turbine shell welding device, and relates to the technical field of turbine shell welding and fixing. The tool comprises a tool bottom plate, a positioning lower mandrel, a positioning upper mandrel, a left supporting plate, a right supporting plate and an upper cover plate. The positioning lower mandrel comprises a clearance section; a positioning boss matched with the positioning sinking table is arranged at the bottom of the upper positioning mandrel; the left supporting plate comprises a first left supporting plate body, a second left supporting plate body and a left supporting plate pipe opening positioning block. The utility model solves the current situation that each part cannot be fixed and welding deformation cannot be limited in the welding process of the turbine shell, improves the product quality and the processing stability, mainly aims at ensuring the product quality and the processing precision, and has the advantages of compact structure, accurate positioning, reliable support, sufficient rigidity, good contact with a workpiece and high production efficiency. And the manufacturability of structural components is good.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine shell welding and fixing, and more specifically relates to a turbine shell welding device. Background Art

[0002] The turbine housing is a typical precision part assembled and welded from machined parts and thin-walled sheet metal parts, and the finished surface of the part has precision-level form and position tolerance requirements. When welding the turbine housing, a reliable device is needed that can accurately fix the parts and limit their deformation.

[0003] Under the existing circumstances, there is no device for fixing the turbine housing parts during the welding process, and it is impossible to ensure that the turbine housing does not deform during the welding process.

[0004] Therefore, it is necessary to develop a turbine casing welding device with accurate positioning, reliable support, sufficient rigidity, good contact with the workpiece, easy disassembly, and good processability of structural components. Summary of the invention

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and provide a turbine casing welding device.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a turbine casing welding device, characterized in that it includes a tooling base plate, a positioning lower mandrel installed in the middle of the tooling base plate, a positioning upper mandrel installed on the top of the positioning lower mandrel, a left support plate installed on the left side of the tooling base plate, a right support plate installed on the right side of the tooling base plate, and an upper cover plate installed on the top of the positioning upper mandrel;

[0007] The positioning lower mandrel comprises a clearance section, the bottom of which is connected to the tooling bottom plate, a flange is arranged in the middle, and a positioning sink is arranged on the top;

[0008] A positioning boss matching the positioning sink is provided at the bottom of the positioning upper mandrel; the positioning boss is sleeved in the positioning sink and connected via a screw connection hole;

[0009] The left support plate comprises a first left support plate, a second left support plate and a left support plate pipe opening positioning block; the bottom of the first left support plate is connected to the tooling bottom plate, and the top is connected to the second left support plate; the second left support plate is inclined toward the side of the positioning lower core shaft, and the left support plate pipe opening positioning block is connected to the second left support plate toward the side of the positioning lower core shaft;

[0010] A right support plate positioning hole is formed on one side of the right support plate facing the positioning lower core shaft.

[0011] In the above technical solution, the diameter of the positioning sink is smaller than the clearance section, a lower positioning step is provided at the connection between the clearance section and the positioning sink, the positioning upper core shaft is provided with an upper positioning step matching the positioning step, and a pressure column is provided between the lower positioning step and the upper positioning step.

[0012] In the above technical solution, an upper pipe opening positioning clamp is provided at the bottom of the upper cover plate and located outside the top of the positioning upper core shaft.

[0013] In the above technical solution, a left support plate pipe opening clamp is provided on the side of the second left support plate facing the positioning lower core shaft and located on the outer side of the top of the left support plate pipe opening positioning block.

[0014] In the above technical solution, a pressure plate is provided on the side of the right support plate facing the positioning lower core shaft and located at the top and bottom of the positioning hole of the right support plate; the pressure plate is screwed to the right support plate.

[0015] In the above technical solution, a bottom plate sink is provided in the middle of the tooling bottom plate, a bottom plate fixing connection hole is opened in the bottom plate sink, a bottom boss matching the bottom plate sink is provided at the bottom of the clearance section, the bottom boss is sleeved in the bottom plate sink and connected through the bottom plate fixing connection hole.

[0016] In the above technical solution, a left positioning pin hole and a left fixed connecting hole are arranged on the left side of the tooling base plate, and a right positioning pin hole and a right fixed connecting hole are arranged on the right side of the tooling base plate; the first left support plate is positioned with the left positioning pin hole through a pin and is connected with the left fixed connecting hole by a screw; the right support plate is positioned with the right positioning pin hole through a pin and is connected with the right fixed connecting hole by a screw.

[0017] In the above technical solution, a left support plate sink is provided on the side of the second left support plate facing the positioning lower core shaft; the left support plate pipe mouth positioning block is sleeved on the left support plate sink and connected with the second left support plate screws; the left support plate pipe mouth clamp is connected with the second left support plate screws.

[0018] In the above technical solution, a plurality of circular through holes are evenly distributed on the flange.

[0019] In the above technical solution, the upper pipe opening positioning clamp is connected to the upper cover plate screws.

[0020] Compared with the prior art, the utility model has the following advantages.

[0021] 1) The utility model solves the current situation that the parts cannot be fixed and the welding deformation cannot be limited during the welding process of the turbine casing, and improves the product quality and processing stability. The utility model takes ensuring product quality and processing accuracy as the main purpose, has a compact structure, accurate positioning, reliable support, sufficient rigidity, good contact with the workpiece, and good processability of structural components.

[0022] 2) The utility model connects and fastens the bottom flange of the turbine housing and the circular through hole of the flange plate through screws; the special-shaped circular ring in the middle of the turbine housing is pressed and positioned by the pressure column and the positioning lower core shaft; the left side oblique pipe opening of the turbine housing is positioned by the left support plate pipe opening positioning block, and the left support plate pipe opening clamp clamps and fastens the rolling waves on the left side oblique pipe opening of the turbine housing to fix the left side oblique pipe opening of the turbine housing; the rolling waves on the upper end pipe opening of the turbine housing are clamped and fastened by the upper pipe opening positioning clamp to fix the upper end pipe opening of the turbine housing; the right side straight pipe opening of the turbine housing is positioned by the right support plate positioning hole of the right support plate, and the pressure plate presses the step of the right side straight pipe opening to tighten it; the turbine housing is completely fixed during welding.

[0023] 3) The positioning lower mandrel and the positioning upper mandrel of the utility model are upper and lower sections, and both are stepped, thereby achieving the goals of product clamping, positioning, fastening, and convenient disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a cross-sectional view of the utility model.

[0025] Figure 2 It is a structural schematic diagram of the tooling base plate.

[0026] Figure 3 It is a schematic diagram of the structure for positioning the lower mandrel.

[0027] Figure 4 It is a schematic diagram of the structure for positioning the upper mandrel.

[0028] Figure 5 The structure diagram of the left support plate Figure 1 .

[0029] Figure 6 The structure diagram of the left support plate Figure 2 .

[0030] Figure 7 This is a structural schematic diagram of the pipe opening positioning block of the left support plate.

[0031] Figure 8 The structure diagram of the left support plate pipe clamp Figure 1 .

[0032] Fig. 9 The structure diagram of the left support plate pipe clamp Figure 2 .

[0033] Fig.10 The structure of the upper cover is shown in Figure 1. Figure 1 .

[0034] Fig.11 The structure of the upper cover is shown in Figure 1. Figure 2 .

[0035] Fig.12 Schematic diagram of the structure of the upper pipe opening positioning clamp Figure 1 .

[0036] Fig.13 Schematic diagram of the structure of the upper pipe opening positioning clamp Figure 2 .

[0037] Fig.14 The structure diagram of the right support plate Figure 1 .

[0038] Fig.15 The structure diagram of the right support plate Figure 2 .

[0039] Fig.16 Schematic diagram of the pressure plate structure Figure 1 .

[0040] Fig.17 Schematic diagram of the pressure plate structure Figure 2 .

[0041] Among them, 1-tooling bottom plate, 11-bottom plate sink, 12-bottom plate fixed connection hole, 13-left positioning pin hole, 14-left fixed connection hole, 15-right positioning pin hole, 16-right fixed connection hole, 2-positioning lower mandrel, 21-clearance section, 22-flange, 221-circular through hole, 23-positioning sink, 24-lower positioning step, 25-bottom boss, 3-positioning upper mandrel, 31-positioning boss, 32-screw connection hole, 33-upper positioning step, 34-upper pipe opening positioning clamp, 4-left support plate, 41-first left support plate, 42-second left support plate, 421-left support plate sink, 43-left support plate pipe opening positioning block, 44-left support plate pipe opening clamp, 5-right support plate, 51-right support plate positioning hole, 52-pressure plate, 6-upper cover plate, 7-pressure column, 8-turbine casing, 81-bottom flange, 82-special-shaped ring, 83-left oblique pipe opening, 84-upper end pipe opening, 85-right straight pipe opening. DETAILED DESCRIPTION

[0042] The following is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but they do not constitute a limitation of the utility model and are only used as examples. At the same time, the advantages of the utility model will become clearer and easier to understand through the description.

[0043] Referring to the attached drawings, it can be seen that a turbine housing welding device is characterized by comprising a tooling base plate 1, a positioning lower mandrel 2 installed in the middle of the tooling base plate 1, a positioning upper mandrel 3 installed on the top of the positioning lower mandrel 2, a left support plate 4 installed on the left side of the tooling base plate 1, a right support plate 5 installed on the right side of the tooling base plate 1, and an upper cover plate 6 installed on the top of the positioning upper mandrel 3;

[0044] The positioning lower mandrel 2 includes a clearance section 21, the bottom of the clearance section 21 is connected to the tooling bottom plate 1, a flange 22 is arranged in the middle, and a positioning sink 23 is arranged on the top;

[0045] The bottom of the positioning upper mandrel 3 is provided with a positioning boss 31 matching the positioning sink 23; the positioning boss 31 is sleeved in the positioning sink 23 and connected through a screw connection hole 32;

[0046] The left support plate 4 is an L-shaped special-shaped plate, and the left support plate 4 includes a first left support plate 41, a second left support plate 42 and a left support plate pipe opening positioning block 43; the bottom of the first left support plate 41 is connected to the tooling bottom plate 1, and the top is connected to the second left support plate 42; the second left support plate 42 is inclined toward the side of the positioning lower core shaft 2, and the left support plate pipe opening positioning block 43 is connected to the second left support plate 42 toward the side of the positioning lower core shaft 2;

[0047] The right support plate 5 is L-shaped, and a right support plate positioning hole 51 is formed on the side of the right support plate 5 facing the positioning lower core shaft 2 .

[0048] The diameter of the positioning sinker 23 is smaller than the clearance section 21 , and a lower positioning step 24 is provided at the connection between the clearance section 21 and the positioning sinker 23 . The positioning upper mandrel 3 is provided with an upper positioning step 33 matching the positioning step 24 , and a pressure column 7 is provided between the lower positioning step 24 and the upper positioning step 33 .

[0049] An upper pipe opening positioning clamp 34 is provided at the bottom of the upper cover plate 6 and outside the top of the positioning upper core shaft 3 .

[0050] A left support plate pipe opening clamp 44 is provided on the second left support plate 42 facing the positioning lower core shaft 2 and located on the outer side of the top of the left support plate pipe opening positioning block 43 .

[0051] A pressing plate 52 is provided on the right supporting plate 5 facing the lower positioning spindle 2 and at the top and bottom of the right supporting plate positioning hole 51 ; the pressing plate 52 is screwed to the right supporting plate 5 .

[0052] The tooling base plate 1 is in the shape of a rectangular plate, and a base plate sink 11 is provided in the middle of the tooling base plate 1. A base plate fixing connection hole 12 is opened in the base plate sink 11. A bottom boss 25 matching the base plate sink 11 is provided at the bottom of the clearance section 21. The bottom boss 25 is sleeved in the base plate sink 11 and connected through the base plate fixing connection hole 12.

[0053] A left positioning pin hole 13 and a left fixed connection hole 14 are provided on the left side of the tooling base plate 1, and a right positioning pin hole 15 and a right fixed connection hole 16 are provided on the right side of the tooling base plate 1; the first left support plate 41 is positioned with the left positioning pin hole 13 by a pin and is screwed to the left fixed connection hole 14; the right support plate 5 is positioned with the right positioning pin hole 15 by a pin and is screwed to the right fixed connection hole 16.

[0054] The second left support plate 42 is provided with a left support plate sink 421 on the side facing the positioning lower core shaft 2; the left support plate pipe opening positioning block 43 is sleeved on the left support plate sink 421 and is screwed to the second left support plate 42; the left support plate pipe opening clamp 44 is screwed to the second left support plate 42.

[0055] The flange 22 is evenly distributed with a plurality of circular through holes 221 .

[0056] The upper pipe opening positioning clamp 34 is connected to the upper cover plate 6 by screws.

[0057] In the example, the turbine housing 8 is provided with a bottom flange 81 at the bottom, a special-shaped ring 82 in the middle, a left oblique pipe opening 83 on the left, an upper pipe opening 84 at the upper end, and a right straight pipe opening 85 on the right.

[0058] The method of using the utility model comprises the following steps:

[0059] Step 1: Put the key into the corresponding keyway of the tooling base plate 1, align the keyway of the positioning lower mandrel 2 with the installed key, align the bottom boss 25 of the positioning lower mandrel 2 with the bottom plate sink 11 of the tooling base plate 1, and tighten the screws connecting the tooling base plate 1 and the positioning lower mandrel 2, so that the positioning lower mandrel 2 is accurately and firmly fixed on the tooling base plate 1;

[0060] Step 2: Connect and fasten the bottom flange 81 of the turbine housing 8 and the eight circular through holes 221 on the flange plate 22 of the positioning lower spindle 2 by screws, put the key into the corresponding keyway at the upper end of the positioning lower spindle 2, align the corresponding keyway of the positioning upper spindle 3 with the installed key, align the positioning boss 31 with the positioning sinker 23, tighten the screw passing through the screw connection hole 32, and fix the positioning upper spindle 3 stably and accurately on the positioning lower spindle 2. In this fastening process, the upper positioning step 33 of the positioning upper spindle 3 presses the pressure column 7, and the pressure column 7 and the lower positioning step 24 of the positioning lower spindle 2 cooperate to press and position the special-shaped ring 82 in the middle of the turbine housing 8;

[0061] Step 3: The left support plate pipe opening positioning block 43 on the second left support plate 42 positions the left oblique pipe opening 83 of the turbine housing 8, the left support plate pipe opening clamp 44 clamps and fastens the rolling wave on the left oblique pipe opening 83 of the turbine housing 8, and the second left support plate 42 and the left support plate pipe opening clamp 44 are fastened with screws to fix and position the left oblique pipe opening 83 of the turbine housing 8;

[0062] Step 4: The upper pipe opening positioning clamp 34 is clamped to tightly fix the rolling wave on the upper pipe opening 84 of the turbine housing 8, and the upper positioning mandrel 3, the upper cover plate 6 and the upper pipe opening positioning clamp 34 are fastened with screws to fix the upper pipe opening 84 of the turbine housing 8;

[0063] Step 5: The right support plate positioning hole 51 of the right support plate 5 positions the right straight pipe opening 85 of the turbine housing 8, and the two pressing plates 52 press the step of the right straight pipe opening 85 to tighten it; thus, the turbine housing 8 is completely fixed during welding.

[0064] In summary, the utility model has the advantages of compact structure, accurate positioning, reliable support, sufficient rigidity, good contact with the workpiece, and good processability of structural components.

[0065] Other parts not described belong to the prior art.

Claims

1. A turbine casing welding device, characterized in that: It comprises a tooling base plate (1), a positioning lower mandrel (2) installed in the middle of the tooling base plate (1), a positioning upper mandrel (3) installed on the top of the positioning lower mandrel (2), a left support plate (4) installed on the left side of the tooling base plate (1), a right support plate (5) installed on the right side of the tooling base plate (1), and an upper cover plate (6) installed on the top of the positioning upper mandrel (3); The positioning lower mandrel (2) comprises a clearance section (21), the bottom of the clearance section (21) is connected to the tooling bottom plate (1), a flange (22) is arranged in the middle, and a positioning sink (23) is arranged on the top; A positioning boss (31) matching the positioning sink (23) is provided at the bottom of the positioning upper mandrel (3); the positioning boss (31) is sleeved in the positioning sink (23) and connected via a screw connection hole (32); The left support plate (4) comprises a first left support plate (41), a second left support plate (42) and a left support plate pipe opening positioning block (43); the first left support plate (41) is connected to the tooling bottom plate (1) at the bottom and connected to the second left support plate (42) at the top; the second left support plate (42) is inclined toward the side of the positioning lower core shaft (2), and the left support plate pipe opening positioning block (43) is connected to the second left support plate (42) toward the side of the positioning lower core shaft (2); A right support plate positioning hole (51) is formed on the side of the right support plate (5) facing the positioning lower core shaft (2).

2. A turbine casing welding device according to claim 1, characterized in that: The diameter of the positioning sink (23) is smaller than the clearance section (21); a lower positioning step (24) is provided at the connection between the clearance section (21) and the positioning sink (23); the positioning upper mandrel (3) is provided with an upper positioning step (33) matching the positioning step (24); and a pressure column (7) is provided between the lower positioning step (24) and the upper positioning step (33).

3. A turbine casing welding device according to claim 1, characterized in that: An upper pipe opening positioning clamp (34) is provided at the bottom of the upper cover plate (6) and outside the top of the positioning upper core shaft (3).

4. A turbine casing welding device according to claim 1, characterized in that: A left support plate pipe opening clamp (44) is provided on the second left support plate (42) facing the side of the positioning lower core shaft (2) and located on the outside of the top of the left support plate pipe opening positioning block (43).

5. A turbine casing welding device according to claim 1, characterized in that: A pressing plate (52) is provided on the right supporting plate (5) facing the side of the positioning lower core shaft (2) and at the top and bottom of the right supporting plate positioning hole (51); the pressing plate (52) is screw-connected to the right supporting plate (5).

6. A turbine casing welding device according to claim 1, characterized in that: A bottom plate sink (11) is provided in the middle of the tooling bottom plate (1), a bottom plate fixing connection hole (12) is opened in the bottom plate sink (11), a bottom boss (25) matching the bottom plate sink (11) is provided at the bottom of the clearance section (21), the bottom boss (25) is sleeved in the bottom plate sink (11) and connected via the bottom plate fixing connection hole (12).

7. A turbine casing welding device according to claim 1, characterized in that: The left side of the tooling base plate (1) is provided with a left positioning pin hole (13) and a left fixed connection hole (14), and the right side of the tooling base plate (1) is provided with a right positioning pin hole (15) and a right fixed connection hole (16); the first left support plate (41) is positioned with the left positioning pin hole (13) by means of a pin and is screwed to the left fixed connection hole (14); the right support plate (5) is positioned with the right positioning pin hole (15) by means of a pin and is screwed to the right fixed connection hole (16).

8. A turbine casing welding device according to claim 4, characterized in that: A left support plate sink (421) is provided on the side of the second left support plate (42) facing the positioning lower core shaft (2); the left support plate pipe opening positioning block (43) is sleeved on the left support plate sink (421) and is screwed to the second left support plate (42); and the left support plate pipe opening clamp (44) is screwed to the second left support plate (42).

9. A turbine casing welding device according to claim 1, characterized in that: The flange (22) is evenly distributed with a plurality of circular through holes (221).

10. A turbine casing welding device according to claim 3, characterized in that: The upper pipe opening positioning clamp (34) is screw-connected to the upper cover plate (6).

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