A fixing device suitable for welding of fuel oil manifold assembly

Abstract

The utility model relates to welding frock technical field more specifically says a kind of fixing device suitable for fuel oil manifold assembly welding, including main body positioning and pressing mechanism and auxiliary positioning and pressing mechanism;The main body positioning and pressing mechanism includes bottom plate, support, positioning plate, bolt I, pressing plate I, screw II, gasket II, gasket III, nut III and pressing plate II, and the auxiliary positioning and pressing mechanism includes supporting block, adjusting support, nut IV, pressing plate III, support, bolt II and nut VI;The utility model realizes the positioning between parts, to avoid the temperature higher generated in welding process, operator cannot directly use hand to fix the position between each part.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, and more specifically to a fixing device suitable for welding fuel main pipe assemblies. Background Technology

[0002] The fuel manifold assembly requires a series of operations during its forming process, including assembly, welding, stress relief, fitter work, X-ray inspection, cleaning, and repair welding. Currently available welding equipment cannot achieve automatic positioning between parts; the high temperatures generated during welding also prevent operators from directly holding the parts in place by hand. Utility Model Content

[0003] To solve the above problems, this utility model provides a fixing device suitable for welding fuel main pipe assemblies, which realizes the positioning between parts.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: A fixing device suitable for welding fuel main pipe assemblies includes a main positioning and clamping mechanism and an auxiliary positioning and clamping mechanism; The main positioning and clamping mechanism includes a base plate, a bracket, a positioning plate, a bolt I, a pressure plate I, a screw II, a washer II, a washer III, a nut III, and a pressure plate II. The lower end of the bracket is fixed to the base plate, the positioning plate is fixed to the upper end of the bracket, one end of the bolt I is fixed to the center of the positioning plate, and the other end of the bolt I is sequentially connected to the pressure plate II, the pressure plate I, the washer II, the washer III, and the nut III. When the nut III is rotated, the nut III moves axially on the bolt I through the thread. The outer diameter of the pressure plate II is clearance-fitted with the inner diameter of the pressure plate I. The pressure plate I is threaded with a screw II, and the inner end of the screw II presses against the pressure plate II. The auxiliary positioning and clamping mechanism includes a support block, an adjusting support, a nut IV, a pressure plate III, a support, a bolt II, and a nut VI. The lower end of the support block is fixed to the base plate. The adjusting support is threadedly engaged with the support block and moves up and down. The nut IV is threadedly connected to the adjusting support. The positioning of the adjusting support is completed by the nut IV tightening the support block. The upper end of the support block is fixed with a support and a bolt II. The pressure plate III passes through the bolt II. The nut VI is threadedly connected to the bolt II and can push the pressure plate III downward.

[0005] Two cylindrical pins (Ⅰ) pass through the lower end of the bracket and the base plate, and are fixed by tightening with two screws (Ⅰ).

[0006] The axial end of the positioning plate passes through the bracket and is fixed by a nut I threaded onto it. A cylindrical pin II passes through both the bracket and the positioning plate, and a washer I is provided between the nut I and the bracket.

[0007] Bolt I is threadedly connected to the positioning plate, and the positioning plate is fixed by nut II threadedly connected to bolt I.

[0008] Two cylindrical pins Ⅲ pass through the support block and the base plate, and are tightened and fixed by four screws Ⅲ.

[0009] The lower ends of the support and bolt II are threaded to the support block, and the support block is fixed by tightening it with the nut V threaded to it.

[0010] Washers IV and V are provided between nut VI and pressure plate III.

[0011] The beneficial effects of this utility model are: Precise positioning between various products was achieved; This avoids burns to the operator caused by the high temperature during the welding process; This achieves simultaneous clamping of the inner and outer rings of the product, and the clamping device is robust. Attached Figure Description

[0012] Figure 1 This is a schematic cross-sectional view of the overall structure after the parts are fixed. Figure 2 yes Figure 1 A schematic diagram of the structure in cross section AA; Figure 3 yes Figure 1 A cross-sectional view of the structure at point BB; Figure 4 This is a schematic diagram of the support structure; Figure 5 This is a structural diagram of the positioning plate.

[0013] In the picture: Base plate 1; Screw I 2; Cylindrical pin I 3; Bracket 4; Positioning plate 5; Cylindrical pin II 6; Nut I 7; Washer I 8; Nut II 9; Bolt I 10; Pressure plate I 11; Screw II 12; Washer II 13; Washer III 14; Nut III 15; Pressure plate II 16; Support block 17; Screw III 18; Cylindrical pin III 19; Adjusting support 20; Nut IV 21; Pressure plate III 22; Support 23; Bolt II 24; Washer IV 25; Washer V 26; Nut V 27; Nut VI 28. Detailed Implementation

[0014] like Figure 1-5 The embodiments of this utility model are described in detail below: A fixing device suitable for welding fuel main pipe assemblies includes a base plate 1, screw I 2, cylindrical pin I 3, bracket 4, positioning plate 5, cylindrical pin II 6, nut I 7, washer I 8, nut II 9, bolt I 10, pressure plate I 11, screw II 12, washer II 13, washer III 14, nut III 15, pressure plate II 16, support block 17, screw III 18, cylindrical pin III 19, adjusting support 20, nut IV 21, pressure plate III 22, support 23, bolt II 24, washer IV 25, washer V 26, nut V 27, and nut VI 28.

[0015] The main positioning and clamping mechanism includes a base plate 1, screw I2, cylindrical pin I3, bracket 4, positioning plate 5, cylindrical pin II6, nut I7, washer I8, nut II9, bolt I10, pressure plate I11, screw II12, washer II13, washer III14, nut III15, and pressure plate II16. During operation, the base plate 1 is placed on the worktable, and the bracket 4 is fixed to the base plate 1 by screw I2 and cylindrical pin I3. The shaft diameter of the positioning plate 5 is interference-fitted with the hole in the bracket 4, and the nut I7 is threaded onto the positioning plate 5, fixing the positioning plate 5 to the bracket 4. The cylindrical pin II6 passes through the bracket 4 and the positioning plate 5, serving to prevent rotation. The high-precision face of the positioning plate 5 is aligned with the oil supply ring. The welded component (a product of the fuel main assembly) serves a positioning and centering function; bolt I10 is threaded into positioning plate 5, and nut II9 fixes bolt I10 onto positioning plate 5; pressure plate I11 passes through bolt I10, and when nut III15 is tightened, it drives pressure plate I11, washer II13, and washer III14 forward, and pressure plate I11 presses against the fuel supply ring welded component (a product of the fuel main assembly); the outer diameter of pressure plate II16 is clearance-fitted with the inner diameter of pressure plate I11, and when screw II12 is tightened, it drives pressure plate II16 forward, and pressure plate II16 presses against the sealing ring (a product of the fuel main assembly).

[0016] The auxiliary positioning and clamping mechanism includes a support block 17, screw III 18, cylindrical pin III 19, adjusting support 20, nut IV 21, pressure plate III 22, support 23, bolt II 24, washer IV 25, washer V 26, nut V 27, and nut VI 28. The support block 17 is fixed to the base plate 1 by screw III 18 and cylindrical pin III 19. The adjusting support 20 is threaded into the support block 17 and moves up and down, and is locked to the support block 17 by nut IV 21. The high-precision face of the adjusting support 20 plays a positioning role for the fuel supply ring welding assembly product (a product of the fuel main pipe assembly). The support 23 and bolt II 24 are locked to the support block 17 by nut V 27. When nut VI 28 is tightened, it drives the pressure plate III 22, washer IV 25, and washer V 26 to move downward. The pressure plate III 22 plays a clamping role on the fuel supply ring welding assembly product (a product of the fuel main pipe assembly). After installation, the product is a certain distance from the base plate 1, which makes it easier for the operator to weld the product.

[0017] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. The present invention is not limited to the examples described above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A fixing device suitable for welding fuel main pipe assemblies, characterized in that: It includes a main positioning and clamping mechanism and an auxiliary positioning and clamping mechanism; The main positioning and clamping mechanism includes a base plate (1), a bracket (4), a positioning plate (5), a bolt I (10), a pressure plate I (11), a screw II (12), a washer II (13), a washer III (14), a nut III (15), and a pressure plate II (16). The lower end of the bracket (4) is fixed on the base plate (1), the positioning plate (5) is fixed on the upper end of the bracket (4), one end of the bolt I (10) is fixed at the center of the positioning plate (5), and the other end of the bolt I (10) is sequentially connected to the pressure plate II (16), the pressure plate I (11), the washer II (13), the washer III (14), and the nut III (15). When the nut III (15) is rotated, the nut III (15) moves axially on the bolt I (10) through the thread. The outer diameter of the pressure plate II (16) is clearance-fitted with the inner diameter of the pressure plate I (11). The screw II (12) is threaded through the pressure plate I (11), and the inner end of the screw II (12) presses against the pressure plate II (16). The auxiliary positioning and clamping mechanism includes a support block (17), an adjusting support (20), a nut IV (21), a pressure plate III (22), a support (23), a bolt II (24), and a nut VI (28). The lower end of the support block (17) is fixed on the base plate (1). The adjusting support (20) is screwed into the support block (17) and moves up and down. The nut IV (21) is threaded onto the adjusting support (20). The positioning of the adjusting support (20) is completed by the nut IV (21) pressing the support block (17). The upper end of the support block (17) is fixed with a support (23) and a bolt II (24). The pressure plate III (22) passes through the bolt II (24). The nut VI (28) is threaded onto the bolt II (24) and can push the pressure plate III (22) downward.

2. The fixing device for welding fuel main pipe assemblies according to claim 1, characterized in that: Two cylindrical pins (I) (3) pass through the lower end of the bracket (4) and the base plate (1), and are tightened and fixed by two screws (I) (2).

3. The fixing device for welding fuel main pipe assemblies according to claim 1, characterized in that: The shaft end of the positioning plate (5) passes through the bracket (4) and is fixed by the nut I (7) threaded onto it. A cylindrical pin II (6) passes through both the bracket (4) and the positioning plate (5). A washer I (8) is provided between the nut I (7) and the bracket (4).

4. The fixing device for welding fuel main pipe assemblies according to claim 1, characterized in that: The bolt I (10) is threadedly connected to the positioning plate (5), and the positioning plate (5) is fixed by the nut II (9) threadedly connected to the bolt I (10).

5. A fixing device for welding fuel mains assembly according to claim 1, characterized in that: Two cylindrical pins (19) pass through the support block (17) and the base plate (1), and are tightened and fixed by four screws (18).

6. A fixing device for welding fuel mains assembly according to claim 1, characterized in that: The lower ends of the support (23) and bolt II (24) are threadedly connected to the support block (17), and are fixed by the nut V (27) threadedly connected to it.

7. A fixing device for welding fuel mains assembly according to claim 1, characterized in that: Washers IV (25) and V (26) are provided between nut VI (28) and pressure plate Ⅲ (22).

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