A repair welding fixture for a rear pivot nozzle assembly and a method of using the same

Abstract

A repair welding device for a rear fulcrum nozzle assembly and a method of using the same belong to the technical field of welding fixtures. One end of the base plate is plugged with a pull rod, and the other end is connected to a support block. The support block is plugged with a directional pin, and the upper end is connected with a support plate and an angle block. The support plate is screwed with a tightening screw, and the upper end has a V-shaped opening, and the angle block cooperates with the tightening screw; there is a through groove in the middle of the support block, and the through groove and the support plate cooperate with an auxiliary fixing mechanism. The method is as follows: insert the pull rod through the nut into the rear fulcrum oil supply pipe joint and insert the lower end into the base plate; position and fix the support arm through the directional pin; place the bent pipe in the V-shaped opening of the support plate; adjust the angle block and the tightening screw to close the nozzle; rotate the adjusting screw to clamp the bent pipe; insert the limit pin into the base plate; rotate the nut to tighten the rear fulcrum oil supply pipe. The present invention realizes the rapid and accurate positioning of the rear fulcrum nozzle assembly during the repair welding process, shortens the repair welding preparation time, and improves production efficiency.

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, X-ray inspection is typically performed to ensure the integrity and reliability of the weld joint. This can identify potential weld defects, such as incomplete welds or porosity. Once these defects are discovered, repair welding is required to repair the weld joint and ensure component quality.

[0003] In existing technologies, the repair welding process typically involves temporarily assembling a repair welding device. This method is not only time-consuming and significantly impacts production efficiency, but also makes it difficult to achieve precise automatic positioning of components during assembly. Due to the lack of a stable positioning mechanism, the repair welding device is prone to drift or misalignment during welding, resulting in insufficient welding precision. Furthermore, manual assembly and positioning can lead to errors in component positioning during welding, further impacting 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 support nozzle assembly and a method for using the same.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: 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 directional pin is plugged into one side of the support block adjacent to the pull rod, a support plate is fixed to one side of the upper end of the support block, the support plate is threadedly connected to the horizontally arranged tightening screw, a V-shaped opening is provided at the upper end of the support plate, the other side of the upper end of the support block is fixedly connected to 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 the 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 the lower end of the pressing pin is fixed with an inverted V-shaped clamping block.

[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: Pass the tie rod through the nut and insert it 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 base plate with interference fit;

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

[0013] S4: Place the elbow of the nozzle of the rear support nozzle assembly into 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: Turn 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: Turn 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] This invention utilizes a specialized repair welding fixture to quickly and accurately position the rear pivot nozzle assembly during the repair welding process. This eliminates the need for temporary assembly of repair welding equipment, shortening preparation time and improving production efficiency. Furthermore, the fixture's directional pins, jack screws, and angle blocks ensure precise alignment between components, effectively preventing drift or misalignment during welding and guaranteeing weld quality and precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It 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 diagram of the auxiliary fixing mechanism. DETAILED DESCRIPTION

[0026] The technical solutions 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 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 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 fit 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 the side of the support block 2 adjacent to the pull rod 9 is interference fit with a directional pin 14, and one side of the upper end of the support block 2 is fixed with a support plate 7, and the support plate 7 is threadedly connected to the horizontally arranged tightening screw 18, and the upper end of the support plate 7 is provided with a V-shaped opening, 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 in the 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 base plate 1 via a limit pin 13. The limit pin 13 prevents the pull rod 9 from rotating relative to the base plate 1, thereby preventing rotation.

[0029] The auxiliary fixing mechanism includes a splint 15, a pressing pin 16 and an adjusting screw 17; the splint 15 is a C-shaped structure, the lower support plate of the splint 15 is inserted into the through groove 3, and the upper surface of the lower support plate of the splint 15 is tightly fitted with the inner top surface of the through groove 3, and the upper support plate of the splint 15 is provided with a threaded hole through its thickness direction, the upper end of the threaded hole is threadedly connected to the lower end of the vertically arranged adjusting screw 17, and a pressing pin 16 is slidably inserted into the lower end of the threaded hole, 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 splint 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 washer into the rear support oil supply pipe joint of the rear support nozzle assembly;

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

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

[0035] S4: Place the elbow of the nozzle of the rear support nozzle assembly into 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: Turn 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: Turn the adjusting screw 17 to make the inverted V-shaped clamp 4 clamp the elbow of the nozzle;

[0040] S9: Insert the limiting pin 13 into the base 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 parts repair welding positioning.

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

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods 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 the auxiliary fixing mechanism; the lower end of the pull rod (9) is connected to the base plate (1) through the through groove (3); 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), and the upper support plate of the clamping plate (15) is provided with a threaded hole, the upper end of the threaded hole is connected to the vertically arranged adjusting screw The lower end of the clamp (17) is screwed with a thread, and a pressing pin (16) is slidably inserted in the lower end of the threaded hole. The upper end of the pressing pin (16) is arranged to abut against the lower end of the adjusting screw (17). The lower end of the pressing pin (16) extends to the lower end of the support plate on the clamp (15). An inverted V-shaped clamp block (4) is fixed to the lower end of the pressing pin (16). The V-shaped opening at the upper end of the support plate (7) and the V-shaped opening of the inverted V-shaped clamp block (4) are both provided with a rubber layer.

2. A method for using the repair welding fixture for the rear pivot nozzle assembly according to claim 1, 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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