Repair welding clamp for rear fulcrum nozzle assembly and using method of repair welding clamp

Abstract

The invention discloses a repair welding device for a rear fulcrum nozzle assembly and a using method thereof, and belongs to the technical field of welding clamps. One end of the bottom plate is inserted into the pull rod, the other end of the bottom plate is connected with the supporting block, the positioning pin is inserted into the supporting block, the supporting plate is connected with the angular block at the upper end, the supporting plate is screwed with the puller screw, the upper end of the supporting plate is provided with a V-shaped opening, and the angular block is matched with the puller screw; a through groove is formed in the middle of the supporting block, and the through groove and the supporting plate are matched with the auxiliary fixing mechanism. The method comprises the following steps that the pull rod penetrates through the nut and then is inserted into the rear fulcrum oil supply pipe joint; the support arm is positioned and fixed through the positioning pin; the bent pipe is placed in the V-shaped opening of the supporting plate; the angular block and the jacking screw are adjusted to be close to the nozzle; the adjusting screw is rotated to clamp the bent pipe; the limiting pin is inserted into the bottom plate; and the nut is screwed to press the rear fulcrum oil supply pipe. According to the invention, the quick and accurate positioning of the rear fulcrum nozzle assembly in the repair welding process is realized, the repair welding preparation time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a repair welding fixture for a rear fulcrum nozzle assembly and a use method thereof, belonging to the technical field of welding fixtures. Background Art

[0002] After the initial welding of the rear pivot nozzle assembly is completed, in order to ensure the integrity and reliability of the welded joint, X-ray inspection is usually required to identify potential welding defects, such as incomplete welds or porosity. Once these defects are found, repair welding is required to repair the welded joint to ensure the quality of the assembly.

[0003] In the prior art, the repair welding process usually involves temporarily assembling a repair welding device. This method is not only time-consuming and seriously affects production efficiency, but also difficult to achieve automatic and precise positioning between parts during the assembly process. Due to the lack of a stable positioning mechanism, the repair welding device is prone to offset or misalignment during the welding process, resulting in insufficient welding accuracy. In addition, manual assembly and positioning may also cause errors in the assembly during the welding process due to inaccurate positioning, further affecting its overall performance and reliability. Summary of the invention

[0004] In order to solve the problems existing in the background technology, the present invention provides a repair welding fixture for a rear fulcrum nozzle assembly and a method for using the same.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a repair welding fixture for a rear fulcrum nozzle assembly, comprising a base plate, a support block, an angle block, a pull rod, a directional pin and a tightening screw; one end of the base plate is plugged into the lower end of the vertically arranged pull rod, and the other end of the base plate is fixedly connected to the support block, a side of the support block adjacent to the pull rod is plugged with a directional pin, a side of the upper end of the support block is fixed with a support plate, the support plate is threadedly connected with a horizontally arranged tightening screw, the upper end of the support plate is provided with a V-shaped opening, the other side of the upper end of the support block is fixedly connected with the angle block, and the angle block is used in conjunction with the tightening screw; a through groove is provided in the middle of the support block, and the through groove and the support plate are both used in conjunction with an auxiliary fixing mechanism.

[0006] The lower end of the pull rod is fixedly connected to the bottom plate via a limit pin.

[0007] The auxiliary fixing mechanism includes a splint, a pressing pin and an adjusting screw; the splint is a C-shaped structure, the lower support plate of the splint is inserted into the through groove, and the upper surface of the lower support plate of the splint is tightly fitted with the inner top surface of the through groove, the upper support plate of the splint is provided with a threaded hole, the upper end of the threaded hole is threadedly screwed with the lower end of the vertically arranged adjusting screw, and a pressing pin is slidably inserted in the lower end of the threaded hole, the upper end of the pressing pin is abutted against the lower end of the adjusting screw, and the lower end of the pressing pin extends to the lower end of the support plate on the splint, and an inverted V-shaped clamp is fixed to the lower end of the pressing pin.

[0008] The V-shaped opening on the upper end of the support plate and the V-shaped opening of the inverted V-shaped clamping block are both provided with a rubber layer.

[0009] A method for using a repair welding fixture for a rear fulcrum nozzle assembly of the present invention comprises the following steps:

[0010] S1: Insert the tie rod through the nut and into the rear pivot oil supply pipe joint of the rear pivot nozzle assembly;

[0011] S2: Insert the lower end of the tie rod into the bottom plate with interference fit;

[0012] S3: Adjust the position of the rear pivot nozzle assembly and position and fix the support arm of the rear pivot oil supply pipe joint by means of a directional pin;

[0013] S4: placing the elbow of the nozzle of the rear support nozzle assembly in the V-shaped opening at the upper end of the support plate;

[0014] S5: Adjust the position of the angle block so that it is close to one side of the nozzle of the rear fulcrum nozzle assembly;

[0015] S6: Rotate the tightening screw to make it close to the other side of the nozzle of the rear fulcrum nozzle assembly;

[0016] S7: insert the lower support plate of the clamping plate into the through groove so that the inverted V-shaped clamping block at the lower end of the pressing pin corresponds to the support plate;

[0017] S8: Rotate the adjusting screw to make the inverted V-shaped clamp clamp the elbow of the nozzle;

[0018] S9: insert the limit pin into the bottom plate to limit the pull rod;

[0019] S10: Rotate the nut on the pull rod to tighten the rear support oil supply pipe to complete the parts repair welding positioning.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The invention realizes the rapid and accurate positioning of the rear support nozzle assembly during the repair welding process by designing a special repair welding fixture. There is no need to temporarily assemble the repair welding device, which shortens the repair welding preparation time and improves production efficiency. At the same time, the directional pins, tightening screws, and angle blocks in the fixture ensure the precise alignment between the parts, effectively avoiding offset or misalignment during the welding process, and ensuring the quality and accuracy of the welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a top view of the present invention excluding the auxiliary fixing mechanism;

[0023] Figure 2 yes Figure 1 AA section view;

[0024] Figure 3 yes Figure 1 Side view of

[0025] Figure 4 It is a structural schematic diagram of the auxiliary fixing mechanism. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] A repair welding fixture for a rear fulcrum nozzle assembly comprises a base plate 1, a support block 2, an angle block 5, a pull rod 9, a directional pin 14 and a tightening screw 18; one end of the base plate 1 is interference-fitted with the lower end of the vertically arranged pull rod 9, and the other end of the base plate 1 is fixedly connected to the support block 2 by connecting screws and cylindrical pins, and a directional pin 14 is interference-fitted on one side of the support block 2 adjacent to the pull rod 9, and a support plate 7 is fixed to one side of the upper end of the support block 2, and the support plate 7 is threadedly connected to the horizontally arranged tightening screw 18, and a V-shaped opening is provided at the upper end of the support plate 7, and the other side of the upper end of the support block 2 is fixedly connected to the angle block 5 by a connecting pin 6 and a guide pin 8, and the angle block 5 is used in conjunction with the tightening screw 18; a through groove 3 is provided in the middle of the support block 2, which runs through its thickness direction, and the through groove 3 and the support plate 7 are both used in conjunction with an auxiliary fixing mechanism.

[0028] The lower end of the pull rod 9 is fixedly connected to the bottom plate 1 via a limit pin 13. The limit pin 13 prevents the pull rod 9 from rotating relative to the bottom plate 1, thereby preventing the pull rod 9 from rotating.

[0029] The auxiliary fixing mechanism includes a clamping plate 15, a pressing pin 16 and an adjusting screw 17; the clamping plate 15 is a C-shaped structure, the lower support plate of the clamping plate 15 is inserted into the through groove 3, and the upper surface of the lower support plate of the clamping plate 15 is tightly fitted with the inner top surface of the through groove 3, and the upper support plate of the clamping plate 15 is provided with a threaded hole through its thickness direction, the upper end of the threaded hole is threadedly screwed with the lower end of the vertically arranged adjusting screw 17, and the lower end of the threaded hole is slidably inserted with a pressing pin 16, the upper end of the pressing pin 16 is abutted against the lower end of the adjusting screw 17, and the lower end of the pressing pin 16 extends to the lower end of the upper support plate of the clamping plate 15, and the lower end of the pressing pin 16 is fixed with an inverted V-shaped clamping block 4.

[0030] The V-shaped opening at the upper end of the support plate 7 and the V-shaped opening of the inverted V-shaped clamping block 4 are both provided with a rubber layer to protect the parts.

[0031] A method for using a repair welding fixture for a rear fulcrum nozzle assembly of the present invention comprises the following steps:

[0032] S1: insert the tie rod 9 through the nut and the washer into the rear pivot oil supply pipe joint of the rear pivot nozzle assembly;

[0033] S2: Insert the lower end of the pull rod 9 into the bottom plate 1 with interference fit;

[0034] S3: Adjust the position of the rear fulcrum nozzle assembly, position and fix the arm of the rear fulcrum oil supply pipe joint by the directional pin 14, and perform angular positioning of the rear fulcrum nozzle assembly;

[0035] S4: placing the elbow of the nozzle of the rear support nozzle assembly in the V-shaped opening at the upper end of the support plate 7;

[0036] S5: Adjust the position of the angle block 5 so that it is close to one side of the nozzle of the rear fulcrum nozzle assembly;

[0037] S6: Rotate the tightening screw 18 to make it close to the other side of the nozzle of the rear fulcrum nozzle assembly;

[0038] S7: insert the lower support plate of the clamping plate 15 into the through groove 3, so that the inverted V-shaped clamping block 4 at the lower end of the pressing pin 16 corresponds to the support plate 7;

[0039] S8: Rotate the adjusting screw 17 to make the inverted V-shaped clamp 4 clamp the elbow of the nozzle;

[0040] S9: insert the limit pin 13 into the bottom plate 1 to limit the pull rod 9;

[0041] S10: Rotate the nut on the pull rod 9 to tighten the rear support oil supply pipe to complete the repair welding positioning of the parts.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A welding fixture for a rear pivot nozzle assembly, characterized in that: It comprises a base plate (1), a support block (2), an angle block (5), a pull rod (9), a directional pin (14) and a tightening screw (18); one end of the base plate (1) is plugged into the lower end of the vertically arranged pull rod (9), and the other end of the base plate (1) is fixedly connected to the support block (2); a directional pin (14) is plugged into one side of the support block (2) adjacent to the pull rod (9); a support plate (7) is fixed to one side of the upper end of the support block (2); the support plate (7) is threadedly connected to the horizontally arranged tightening screw (18); a V-shaped opening is provided at the upper end of the support plate (7); the other side of the upper end of the support block (2) is fixedly connected to the angle block (5), and the angle block (5) is used in conjunction with the tightening screw (18); a through groove (3) is provided in the middle of the support block (2); the through groove (3) and the support plate (7) are used in conjunction with an auxiliary fixing mechanism.

2. The welding fixture for a rear pivot nozzle assembly according to claim 1, characterized in that: The lower end of the pull rod (9) is fixedly connected to the bottom plate (1) via a limit pin (13).

3. The welding fixture for a rear pivot nozzle assembly according to claim 1, characterized in that: The auxiliary fixing mechanism comprises a clamping plate (15), a pressing pin (16) and an adjusting screw (17); the clamping plate (15) is a C-shaped structure, the lower support plate of the clamping plate (15) is inserted into the through groove (3), and the upper surface of the lower support plate of the clamping plate (15) is tightly fitted with the inner top surface of the through groove (3), the upper support plate of the clamping plate (15) is provided with a threaded hole, the upper end of the threaded hole is threadedly screwed with the lower end of the vertically arranged adjusting screw (17), and the lower end of the threaded hole is slidably inserted into the lower end of the pressing pin (16), the upper end of the pressing pin (16) is abutted against the lower end of the adjusting screw (17), and the lower end of the pressing pin (16) extends to the lower end of the upper support plate of the clamping plate (15), and the lower end of the pressing pin (16) is fixed with an inverted V-shaped clamping block (4), and the V-shaped opening at the upper end of the support plate (7) and the V-shaped opening of the inverted V-shaped clamping block (4) are both provided with a rubber layer.

4. A method for using the repair welding fixture for a rear pivot nozzle assembly according to any one of claims 1 to 3, characterized in that: The method comprises the following steps: S1: insert the tie rod (9) through the nut and into the rear pivot oil supply pipe joint of the rear pivot nozzle assembly; S2: Insert the lower end of the pull rod (9) into the bottom plate (1) with interference fit; S3: adjusting the position of the rear support nozzle assembly, and positioning and fixing the support arm of the rear support oil supply pipe joint by means of a directional pin (14); S4: placing the elbow of the nozzle of the rear support nozzle assembly in the V-shaped opening at the upper end of the support plate (7); S5: adjusting the position of the angle block (5) so that it is close to one side of the nozzle of the rear fulcrum nozzle assembly; S6: Rotate the tightening screw (18) to make it close to the other side of the nozzle of the rear fulcrum nozzle assembly; S7: insert the lower support plate of the clamping plate (15) into the through groove (3), so that the inverted V-shaped clamping block (4) at the lower end of the pressing pin (16) corresponds to the support plate (7); S8: Rotate the adjusting screw (17) to make the inverted V-shaped clamp (4) clamp the elbow of the nozzle; S9: inserting the limit pin (13) into the bottom plate (1) to limit the pull rod (9); S10: Rotate the nut on the pull rod (9) to compress the rear support oil supply pipe, and complete the repair welding positioning of the parts.

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