Single-arm supporting repair welding tool for thin wall of engine case

Abstract

The utility model relates to a single-arm support repair welding tool for a thin wall of an engine casing, which belongs to the technical field of mechanical manufacturing and welding and comprises an accompanying cushion block clamped in the casing, and a support device is arranged on the upper side of the accompanying cushion block. The supporting device comprises a sliding cushion block embedded in the right side of the accompanying cushion block, a threaded rod connected to the upper side of the sliding cushion block in a threaded mode, a cushion block connected to the upper side of the threaded rod in a clamped mode, a nut connected to the outer side of the threaded rod in a threaded mode and a rib rod arranged on the outer wall of the lower side of the threaded rod in a sleeving mode. The pin is inserted into the left side of the rib rod; and the cotter pin is in threaded connection with one side of the pin. According to the single-arm supporting repair welding tool for the thin wall of the engine case, the accompanying cushion block is placed in the case, the thick wall and the thin wall of the case are in matched contact through the cushion block and the sliding cushion block, and then the threaded rod is controlled to achieve the stabilizing effect.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing and welding technology, specifically a single-arm support welding fixture for thin-walled engine casings. Background Technology

[0002] The engine casing is a crucial component of an aero-engine, characterized by its complex structure and thin walls, requiring high precision and strength. During manufacturing, various factors can lead to defects or damage to the thin walls of the casing, necessitating repair welding. The single-arm support welding fixture is a specialized piece of equipment designed to meet this need.

[0003] Currently, for the repair welding of thin-walled engine casings, there are strict requirements on the alloy composition of the surface and the amount of deformation. Simply reinforcing to prevent deformation cannot meet the surface quality requirements of thin walls. In addition, in order to prevent the L-shaped support fixture from shifting during welding, a single-arm support welding fixture for thin-walled engine casings is proposed to solve the problems mentioned above. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a single-arm support welding fixture for thin-walled engine casings. It has advantages such as easy disassembly and installation, avoiding contamination of the casing surface caused by ordinary reinforcement, and solving the problem that simple reinforcement to prevent deformation cannot meet the surface quality requirements of thin walls due to the alloy composition requirements and strict requirements on the deformation amount of the surface. In addition, it also prevents the L-shaped support fixture from shifting during welding.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a single-arm support welding fixture for thin-walled engine casing, comprising a follower pad that is snapped into the inside of the casing, wherein a support device is provided on the upper side of the follower pad;

[0006] The support device includes a sliding pad embedded inside the right side of the accompanying pad, a threaded rod threaded to the upper side of the sliding pad, a pad snapped onto the upper side of the threaded rod, a nut threaded to the outer side of the threaded rod, a rib sleeved on the lower outer wall of the threaded rod, a pin inserted into the left side of the rib, and a cotter pin threaded to one side of the pin.

[0007] Furthermore, the pad has a U-shaped groove structure, and the top of the pad contacts the inner wall of the casing.

[0008] Furthermore, the height of the sliding pad is higher than that of the accompanying pad.

[0009] Furthermore, the accompanying pad is attached to the thin wall surface of the casing, and a hanging hole is provided at the left end of the upper side of the accompanying pad.

[0010] Furthermore, the pins and reinforcing bars are used in conjunction with the hanging holes, and a square groove is provided at the right end of the upper side of the accompanying pad.

[0011] Furthermore, the outer side of the sliding pad is engaged and limited within the square groove.

[0012] Furthermore, the cotter pin passes through one end of the pin and extends to its exterior.

[0013] Furthermore, the upper side of the sliding pad has a threaded hole that matches the bottom of the threaded rod, and the threaded rod is threadedly connected to the threaded hole.

[0014] Compared with the prior art, this utility model provides a single-arm support welding fixture for thin-walled engine casings, which has the following advantages:

[0015] 1. This single-arm support welding fixture for thin-walled engine casings is placed inside the casing using accompanying pads. The pads and sliding pads respectively engage with the thick and thin walls of the casing, and the threaded rod is controlled to achieve a stabilizing effect.

[0016] 2. This single-arm support welding fixture for thin-walled engine casings uses a square groove at one end of the accompanying pad to facilitate the rotation of the sliding pad, thereby enabling the threaded rod to be twisted and extended. It also facilitates subsequent installation and disassembly, solving the problem that simple reinforcement to prevent deformation cannot meet the surface quality requirements of thin-walled structures due to the alloy composition requirements and strict requirements on the amount of deformation. In addition, it prevents the L-shaped support fixture from shifting during welding. Attached Figure Description

[0017] Figure 1 This is a front view of the structure of this utility model;

[0018] Figure 2 This is a rear view of the structure of this utility model;

[0019] Figure 3 This is a perspective view of the mating structure of the casing and the accompanying pad of this utility model.

[0020] In the diagram: 1. Casing, 2. Accompanying pad, 3. Pin, 4. Cotter pin, 5. Rib, 6. Sliding pad, 7. Nut, 8. Threaded rod, 9. Pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] Please see Figures 1 to 3 This embodiment provides a single-arm support welding fixture for thin-walled engine casings, comprising a follower pad 2 snapped into the inside of the casing 1, with a support device on the upper side of the follower pad 2. The support device includes a sliding pad 6 embedded inside the right side of the follower pad 2, a threaded rod 8 threadedly connected to the upper side of the sliding pad 6, a pad 9 snapped into the upper side of the threaded rod 8, a nut 7 threadedly connected to the outer side of the threaded rod 8, a reinforcing rod 5 sleeved on the lower outer wall of the threaded rod 8, a pin 3 inserted into the left side of the reinforcing rod 5, and a cotter pin 4 threadedly connected to one side of the pin 3.

[0024] Among them, the pad 9 has a U-shaped groove structure. The top of the pad 9 contacts the inner wall of the casing 1. The height of the sliding pad 6 is higher than that of the accompanying pad 2. The accompanying pad 2 fits against the thin wall surface of the casing 1. A hanging hole is provided on the upper left side of the accompanying pad 2. The pin 3 and the reinforcing rod 5 are used in conjunction with the hanging hole. A square groove is provided on the upper right side of the accompanying pad 2. The outer side of the sliding pad 6 is locked in the square groove for limitation. The cotter pin 4 passes through one end of the pin 3 and extends to its outside.

[0025] It should be noted that the accompanying pad 2 serves to fix the thin wall profile of the casing 1, prevent deformation, and dissipate heat. The sliding pad 6 can be removed from the side wall in a narrow space.

[0026] Example 2:

[0027] Please see Figures 1 to 2 Based on Embodiment 1, it includes a threaded hole on the upper side of the sliding pad 6 that matches the bottom of the threaded rod 8, and the threaded rod 8 is threadedly connected to the threaded hole.

[0028] By adopting the above technical solution, the threaded hole can be used to fasten the threaded rod 8.

[0029] The working principle of the above embodiments is as follows:

[0030] Before installation, remove pin 3 and cotter pin 4. Tighten nut 7 to the upper end of threaded rod 8, fully tightening threaded rod 8 and sliding pad 6. Sliding pad 6 increases the height, providing more room for installation and removal. Place the fixture between the two thin walls of housing 1, with pad 9 engaging with the thick wall of housing 1 and sliding pad 6 engaging with the thin wall of housing 1. After the fixture is in the correct position, tighten threaded rod 8 to raise it, causing sliding pad 6 to extend relative to threaded rod 8. Once firmly secured, rotate rib 5 to align with accompanying pad 2, insert pin 3 and secure cotter pin 4. Then tighten nut 7, forcing rib 5 to apply a downward-southward force to accompanying pad 2, ensuring maximum stability under single-arm conditions. Installation is now complete. Disassembly is performed in reverse order.

[0031] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-arm support repair tool for the thin-walled engine case, comprising a travelling pad (2) clamped inside the case (1), characterized in that: The upper side of the traveling cushion block (2) is provided with a supporting device; The supporting device comprises a sliding cushion block (6) inlaid in the right side of the traveling cushion block (2), a threaded rod (8) threadedly connected to the upper side of the sliding cushion block (6), a cushion block (9) clamped to the upper side of the threaded rod (8), a nut (7) threadedly connected to the outer side of the threaded rod (8), a muscle rod (5) sleeved to the lower side outer wall of the threaded rod (8), a pin (3) inserted to the left side of the muscle rod (5), and an open pin (4) threadedly connected to one side of the pin (3).

2. The single-arm support welding tool for the thin-walled engine case according to claim 1, characterized in that: The cushion block (9) is in U-shaped groove structure, and the top of the cushion block (9) is in contact with the inner wall of the casing (1).

3. The single-arm support welding tool for the thin-walled engine case according to claim 1, characterized in that: The height of the sliding cushion block (6) is higher than that of the traveling cushion block (2).

4. The single-arm support welding tool for the thin-walled engine case according to claim 1, characterized in that: The traveling cushion block (2) is attached to the thin-walled surface of the casing (1), and the left end of the upper side of the traveling cushion block (2) is provided with a hanging hole.

5. The single-arm support welding tool for the thin-walled engine case according to claim 4, characterized in that: The pin (3) and the muscle rod (5) are used in cooperation with the hanging hole, and the right end of the upper side of the traveling cushion block (2) is provided with a square groove.

6. The single-arm support welding tool for the thin-walled engine case according to claim 5, characterized in that: The outer side of the sliding cushion block (6) is clamped in the square groove for limiting.

7. The single-arm support welding tool for the thin-walled engine case according to claim 1, characterized in that: The open pin (4) penetrates one end of the pin (3) and extends to the outside thereof.

8. The single-arm support welding tool for the thin-walled engine case according to claim 1, characterized in that: The inner part of the upper side of the sliding cushion block (6) is provided with a threaded hole matched with the bottom of the threaded rod (8), and the threaded rod (8) is threadedly connected with the threaded hole.

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