Sleeve repair tool for fuel header pipe of turboshaft engine

Abstract

The utility model discloses a sleeve repair tool for a fuel manifold of a turboshaft engine, which comprises a support with the top end provided with a penetrating column with threads on the inner wall, and further comprises a threaded pressing rod with the top end provided with a pulling rod, and the threaded pressing rod is in threaded connection with the penetrating column through the threads on the outer wall; a semi-arc-shaped pressing plate is arranged at the bottom of the T-shaped sliding block, and the T-shaped sliding block is movably connected with the threaded pressing rod; a shape correcting arc plate is arranged on the positioning column opposite to the semi-arc pressing plate, and the positioning column is located at the middle section of the support; and the gland is connected to the positioning column through a bolt. According to the sleeve repairing tool for the turboshaft engine fuel main pipe, the problems that in the prior art, manual positioning is not accurate, and pipe wall cracks and internal threads are prone to being crushed to be scrapped due to repeated knocking are solved.

Description

Technical Field

[0001] This utility model relates to the field of pipe sleeve repair technology, specifically a pipe sleeve repair tool for a turboshaft engine fuel main pipe. Background Technology

[0002] The bushing used for the fuel main of a Russian-made aircraft turboshaft engine has worn out after long-term use. During maintenance, it is necessary to repair the two concave safety marks at the impact points before it can be put back into use.

[0003] Currently, the existing technology involves manual repair using copper rods and hammers to repeatedly strike the casing. However, due to the small size of the casing with a maximum diameter of 17mm, manual alignment is difficult and positioning is challenging. The manual operation is also difficult, with each strike taking about 5 minutes, which is time-consuming and inefficient. Furthermore, since the casing wall thickness is only 0.5mm, it requires highly skilled operators. If the positioning is inaccurate, repeated striking can easily cause cracks in the casing wall and damage to the internal threads, rendering the casing unusable. Utility Model Content

[0004] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0005] To achieve these objectives and other advantages according to this utility model, a bushing repair tool for the fuel main of a turboshaft engine is provided, comprising: a support having a through-post with threads on its inner wall at its top end, and further comprising:

[0006] A threaded pressure bar with a lever at its top, and the threaded pressure bar is connected to the through-cylinder thread through the thread on its outer wall;

[0007] The T-shaped sliding block has a semi-circular pressure plate at its bottom, and the T-shaped sliding block is movably connected to the threaded pressure rod.

[0008] The positioning post for installing the sleeve has a correction arc plate on it relative to the semi-arc pressure plate, and the positioning post is located in the middle section of the support.

[0009] The pressure cap is bolted to the positioning post.

[0010] Preferably, guide posts are provided on both sides of the support, and through holes are provided at both ends of the T-shaped sliding block, with the through holes slidably connected to the guide posts.

[0011] Preferably, the gland can be replaced by a clamping assembly, and the clamping assembly has the following structure:

[0012] The adjusting rod has a forward threaded section, a threadless section and a reverse threaded section arranged sequentially in its middle section, and one end of the adjusting rod is mounted on the support via a bearing;

[0013] The clamping semi-arc block is provided with a threaded through hole, and the clamping semi-arc block is symmetrically arranged in two sets about the unthreaded section of the adjusting rod. The threaded through hole of each clamping semi-arc block is threadedly connected to a matching positive or negative threaded section.

[0014] Preferably, the T-shaped sliding block and the threaded pressure rod are movably connected in the following manner: the top of the T-shaped sliding block is provided with a concave groove, and the bottom of the threaded pressure rod is provided with a convex disc, and the disc is slidably connected to the groove.

[0015] This utility model has at least the following beneficial effects:

[0016] This device uses a rotating threaded pressure rod to drive the semi-arc pressure plate on the T-shaped sliding block to extend and retract vertically. It works in conjunction with the alignment arc plate on the positioning column to repair the concave punch marks on the sleeve by squeezing in both vertical and horizontal directions. It is easy to operate and highly efficient, taking about 30 seconds to repair one piece, which effectively improves production efficiency.

[0017] This device directly places the sleeve to be repaired onto the positioning post and fixes it with a pressure cap. The installation and positioning are quick, and the sleeve is pressed with a calibrating arc plate, resulting in uniform force and low stress. There are no knock marks on the surface, the repair is aesthetically pleasing, and the scrap rate is low.

[0018] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention after the product is installed;

[0021] Figure 3 This is a schematic diagram of the overall structure after the replacement in this utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of the product after replacement according to this utility model;

[0023] Figure 5 For the present utility model Figure 4 Enlarged cross-sectional view at point A;

[0024] The markings in the diagram are: 1. Support, 11. Guide post, 2. Through post, 3. Threaded pressure rod, 31. Lever, 32. Disc, 4. T-shaped sliding block, 41. Through hole, 42. Slide groove, 5. Semi-arc pressure plate, 6. Positioning post, 61. Shaping arc plate, 7. Clamping assembly, 71. Adjusting rod, 72. Forward threaded section, 73. Reverse threaded section, 74. Clamping semi-arc block, 75. Limiting block, 76. Protruding structure, 8. Sleeve, 9. Pressure cap. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0026] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0027] It should be noted that in the description of this utility model, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] Furthermore, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] The following is a detailed description of this novel experimental device with reference to the accompanying drawings:

[0031] Figure 1-5 This invention discloses a bushing repair tool for the fuel main pipe of a turboshaft engine, comprising: a support 1, the top of which is provided with a through-post 2 with a threaded inner wall, and further comprising:

[0032] The threaded pressure rod 3 has a lever 31 at its top, and the threaded pressure rod 3 is threadedly connected to the through column 2 through the thread on its outer wall.

[0033] The T-shaped sliding block 4 has a semi-circular pressure plate 5 at its bottom, and the T-shaped sliding block 4 is movably connected to the threaded pressure rod 3;

[0034] The positioning post 6 used for sleeve installation has a correction arc plate 61 on it relative to the semi-arc pressure plate 5, and the positioning post 6 is located in the middle section of the support 1.

[0035] The pressure cap 9 is bolted to the positioning post 6.

[0036] Working principle:

[0037] Installing sleeve 8: The operator first twists the pressure cap 9 to remove it from the positioning post 6, then puts the sleeve 8 (product) to be repaired onto the positioning post 6, and makes the concave punch mark on the sleeve 8 to be repaired fit with the straightening arc plate 61. Then twist the pressure cap 9 back to apply external force to the sleeve 8 to limit it, so as to ensure that the sleeve does not shift during the repair process and that the repair work can be carried out stably.

[0038] Repair: The operator rotates the lever 31 on the threaded pressure rod 3. Since the threaded pressure rod 3 is threadedly connected to the through column 2 through the thread on the outer wall, the threaded pressure rod 3 will slide along the thread on the through column 2 to achieve vertical up and down movement. Since the T-shaped sliding block 4 is movably connected to the threaded pressure rod 3, the T-shaped sliding block 4 will also move when the threaded pressure rod 3 moves.

[0039] When the threaded pressure bar 3 moves downward, the semi-circular pressure plate 5 at the bottom of the T-shaped sliding block 4 will gradually approach the sleeve 8, and together with the straightening arc plate 61, apply a certain pressure to the inside and outside of the sleeve 8, press the sleeve 8, and realize the repair of the concave punch mark.

[0040] Inspection of repair status: The operator rotates the lever 31 on the threaded pressure rod 3 in the reverse direction, twists the pressure cap 9, removes the sleeve 8, and checks the repair quality of the concave punch mark. If it is not up to standard, the above operation is repeated.

[0041] Repair on the other side: If the inspection is qualified, place the concave punch mark on the other side of the sleeve 8 on the straightening arc plate 61, repeat the above operation to repair and inspect, and finally complete the repair of the sleeve 8.

[0042] Among them, ① support 1 is used to support and install parts. In actual use, bolt holes are provided on the bottom surface, which can be fixed to the tabletop to provide a stable working environment for the entire device.

[0043] ② The diameter of the semi-circular pressure plate 5 is (0.1~0.2) mm larger than the outer diameter of the sleeve 8 (product) shaping surface, which can ensure that the uppermost part of the outer diameter of the sleeve 8 (product) is tightly attached to the semi-circular surface of the semi-circular pressure plate 5;

[0044] ③ The diameter of the straightening arc plate 61 is smaller than the inner diameter of the product by (0.05~0.1) mm, which can ensure that the uppermost part of the inner diameter of the sleeve 8 (product) is tightly attached to the semi-circular surface of the straightening arc plate 61. At the same time, the semi-circular length of the straightening arc plate 61 and the semi-circular pressure plate 5 is predetermined to be 1 / 2 of the whole circle. Because the concave punch mark is very small, this design allows the operator to simply place the sleeve 8 (product) in a general position without more precise positioning to achieve repair.

[0045] In summary, this device uses the rotating threaded pressure rod 3 to drive the semi-arc pressure plate 5 on the T-shaped sliding block 4 to achieve vertical extension and retraction, and works with the alignment arc plate 61 on the positioning column 6 to repair the concave punch marks on the sleeve 8 by squeezing in both vertical and horizontal directions. It is easy to operate, highly efficient, and takes about 30 seconds to repair one piece, effectively improving production efficiency.

[0046] This device directly places the sleeve 8 to be repaired onto the positioning post 6 and fixes it with the pressure cap 9. The installation and positioning are quick, and the sleeve 8 is pressed with the straightening arc plate 61, which ensures uniform force and low stress, no knocking marks on the surface, beautiful repair, and low scrap rate.

[0047] In the above scheme, guide posts 11 are provided on both sides of the support 1, and through holes 41 are provided at both ends of the T-shaped sliding block 4, and the through holes 41 are slidably connected to the guide posts 11.

[0048] Working principle:

[0049] Since the T-shaped sliding block 4 is movably connected to the threaded pressure rod 3, in order to ensure the stability of vertical movement, guide columns 11 are slidably connected on both sides of the T-shaped sliding block 4. Due to the support and guidance of the guide columns 11, the T-shaped sliding block 4 can only move in a straight line along the direction of the guide columns 11, so that the T-shaped sliding block 4 remains stable during the lifting and lowering process and will not deviate, shake or twist.

[0050] In the above scheme, the pressure cap 9 can be replaced by the clamping assembly 7, and the structure of the clamping assembly 7 includes:

[0051] The adjusting rod 71 has a forward threaded section 72, a threadless section and a reverse threaded section 73 arranged sequentially in its middle section, and one end of the adjusting rod 71 is mounted on the support 1 through a bearing;

[0052] The clamping semi-arc block 74 is provided with a threaded through hole, and two sets of clamping semi-arc blocks 74 are symmetrically arranged about the unthreaded section of the adjusting rod 71. The threaded through hole of each clamping semi-arc block 74 is threadedly connected to the matching positive-rotation threaded section 72 or negative-rotation threaded section 73.

[0053] Working principle:

[0054] To improve efficiency in actual use, the pressure cap 9, which requires repeated twisting and removal for installation, can be replaced with the clamping assembly 7. When clamping the sleeve 8 (product) is required, the adjusting rod 71 is rotated. (Since one end of the adjusting rod 71 is mounted on the support 1 via a bearing, its rotation will not affect the support 1. Furthermore, to prevent the adjusting rod 71 from shifting position after long-term use, a limiting block 75 with a through hole is provided on the side of the support 1, so that the adjusting rod 71 is fitted into the limiting block 75 via a bearing connection.) To achieve limiting and guiding, a semi-circular torsion block is provided at the top for easy twisting. As the adjusting rod 71 rotates, the threaded through hole on the clamping semi-circular block 74, which is threaded to the forward-rotating threaded section 72, will move along the adjusting rod 71 in one direction, while the clamping semi-circular block 74, which is threaded to the reverse-rotating threaded section 73, will move in the opposite direction. Therefore, the two sets of clamping semi-circular blocks 74 will move closer to the sleeve 8 (product) at the same time until the sleeve 8 (product) is clamped in the middle, thus fixing the sleeve 8 (product).

[0055] When it is necessary to loosen the sleeve 8 (product), rotate the adjusting rod 71 in the opposite direction, and the two sets of clamping semi-circular blocks 74 will move towards the sleeve 8 (product) respectively, thereby releasing the clamping state of the sleeve 8 (product).

[0056] Among them, the side of the clamping semi-arc block 74 that is in contact with the sleeve 8 (product) can be equipped with a toothed soft rubber protrusion 76 (with a predetermined thickness between 0.1mm and 0.2mm) in actual use to increase friction. At the same time, the soft rubber material (such as silicone rubber) itself has good elasticity and flexibility, which can better fit the surface of the sleeve 8 when clamping, making the clamping more secure. The protrusion 76 provides appropriate cushioning and will not cause scratches or wear on the surface of the sleeve 8, thus improving the flexibility and practicality of the tooling.

[0057] In summary, the clamping assembly 7 of this device, through the design of the forward-rotating threaded section 72 and the reverse-rotating threaded section 73 on the adjusting rod 71, enables the two sets of clamping semi-circular blocks 74 to move synchronously and symmetrically, ensuring uniform clamping of the fuel main pipe, avoiding deformation or positional displacement of the sleeve 8 (product) due to unilateral clamping or uneven clamping force, and improving the stability and reliability of clamping.

[0058] Meanwhile, simply rotating the adjusting rod 71 makes operation simple and convenient, allowing operators to quickly clamp or loosen the sleeve 8 (product), thus improving efficiency.

[0059] In the above scheme, the T-shaped sliding block 4 and the threaded pressure rod 3 are movably connected in the following way: the top of the T-shaped sliding block 4 is provided with a concave sliding groove 42, and the bottom of the threaded pressure rod 3 is provided with a convex disc 32, and the disc 32 is slidably connected to the sliding groove 42.

[0060] Working principle:

[0061] The T-shaped sliding block 4 is movably connected to the threaded pressure rod 3 in the following manner:

[0062] The design of the concave groove 42 and the disc 32 ensures that when the threaded pressure rod 3 rotates, the disc 32 at its bottom will rotate freely in the groove 42, thus ensuring that the rotation of the threaded pressure rod 3 is smoothly converted into the linear motion of the T-shaped sliding block 4, without causing the T-shaped sliding block 4 itself to rotate.

[0063] The concave groove 42 and the convex disk 32 have relatively simple structures, are easy to process and manufacture, and reduce the complexity and cost of tooling.

[0064] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A bushing repair tool for the fuel main of a turboshaft engine, comprising: Support, Its top end is provided with a through-post with an inner thread, characterized in that it further includes: A threaded pressure bar with a lever at its top, and the threaded pressure bar is connected to the through-cylinder thread through the thread on its outer wall; The T-shaped sliding block has a semi-circular pressure plate at its bottom, and the T-shaped sliding block is movably connected to the threaded pressure rod. The positioning post for installing the sleeve has a correction arc plate on it relative to the semi-arc pressure plate, and the positioning post is located in the middle section of the support. The pressure cap is bolted to the positioning post.

2. The bushing repair fixture for the turboshaft engine fuel main pipe according to claim 1, characterized in that, The support is provided with guide posts on both sides, and the T-shaped sliding block is provided with through holes at both ends, and the through holes are slidably connected to the guide posts.

3. The bushing repair fixture for the turboshaft engine fuel main pipe according to claim 1, characterized in that, The pressure cap can be replaced by a clamping assembly, and the structure of the clamping assembly includes: The adjusting rod has a forward threaded section, a threadless section and a reverse threaded section arranged sequentially in its middle section, and one end of the adjusting rod is mounted on the support via a bearing; The clamping semi-arc block is provided with a threaded through hole, and the clamping semi-arc block is symmetrically arranged in two sets about the unthreaded section of the adjusting rod. The threaded through hole of each clamping semi-arc block is threadedly connected to a matching positive or negative threaded section.

4. The bushing repair fixture for the turboshaft engine fuel main pipe according to claim 1, characterized in that, The T-shaped sliding block and the threaded pressure rod are movably connected in the following way: the top of the T-shaped sliding block is provided with a concave sliding groove, and the bottom of the threaded pressure rod is provided with a convex disc, and the disc is slidably connected to the sliding groove.

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