Bolt mounting auxiliary tool for fan disc of engine

Abstract

The utility model discloses an engine fan disc bolt installation auxiliary tool which comprises a tool body provided with a first protruding block part in a protruding mode and an ejector block assembled on the tool body through an adjusting mechanism and capable of moving close to the first protruding block part. An avoiding through groove right facing the top block is formed in the first protruding block part in a penetrating mode, the length direction of the avoiding through groove is consistent with the moving direction of the top block, the top block can push the head of the bolt to move close to the first protruding block part, the bolt can penetrate through a through hole in the fan disc, and the end, away from the head, of the bolt can be inserted into the avoiding through groove, so that the bolt is assembled on the fan disc. The tool is convenient and labor-saving to install the bolt.

Description

Technical Field

[0001] This utility model relates to the technical field of aircraft engine maintenance and assembly, specifically to an auxiliary tool for installing engine fan disc bolts. Background Technology

[0002] An aircraft engine is a highly complex and precise thermodynamic machine. As the heart of an aircraft, it not only powers the aircraft's flight but also serves as a vital driving force for the development of the aviation industry. Every major transformation in the history of human aviation has been inseparable from the technological advancements in aircraft engines.

[0003] Aero-engine parts require high manufacturing and assembly precision, which results in small assembly clearances during bolt assembly, increasing the difficulty of bolt assembly. There are also time-consuming and labor-intensive problems when bolts pass through through holes in parts, such as when bolts pass through through holes in fan discs. Therefore, it is necessary to design an auxiliary tool for installing engine fan disc bolts. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to overcome the time-consuming and labor-intensive nature of assembling bolts in the prior art due to the high assembly precision required.

[0005] To achieve the above objectives, this utility model provides an auxiliary tool for installing engine fan disc bolts, comprising: a tool body with a first protrusion and a top block that is mounted on the tool body via an adjustment mechanism and can move close to the first protrusion, wherein the first protrusion has a through groove that faces the top block and whose length direction is consistent with the moving direction of the top block.

[0006] Preferably, the tool body has a second protrusion that protrudes from it and is opposite to the first protrusion. The adjustment mechanism includes a threaded rod that is threaded through the second protrusion and whose end near the first protrusion is connected to a top block, and a handle that is connected to the end of the threaded rod away from the first protrusion.

[0007] Preferably, the threaded rod is connected to the top block via a thrust ball bearing arranged coaxially.

[0008] Preferably, the top block has a tapered portion on the side near the clearance groove that is coaxial with the threaded rod.

[0009] Preferably, the tool body is provided with a handle.

[0010] Preferably, the handle includes a grip that slides through the end of the threaded rod and whose length direction is perpendicular to the length direction of the threaded rod, and both ends of the grip are fitted with limiters.

[0011] Preferably, the first protrusion has an inclined outer wall on the side facing away from the top block, and the end of the clearance groove away from the top block is located on the inclined outer wall.

[0012] According to the above technical solution, the auxiliary tool for installing engine fan disc bolts provided by this utility model has the following advantages in use:

[0013] Firstly, the top block will push the head of the bolt closer to the first protrusion, and the bolt will pass through the through hole on the fan plate. The end of the bolt away from the head will be inserted into the clearance slot, so that the bolt is assembled on the fan plate. Using this tool to install bolts is convenient and labor-saving.

[0014] Secondly, this auxiliary tool is not only used for bolt installation on the fan disc, but can also be applied to bolt assembly in other parts of the engine during maintenance, making it widely applicable.

[0015] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This utility model provides a three-dimensional structural diagram of an auxiliary tool for installing engine fan disc bolts. Figure 1 ;

[0018] Figure 2 This utility model provides a three-dimensional structural diagram of an auxiliary tool for installing engine fan disc bolts. Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of an auxiliary tool for installing engine fan disc bolts provided in this utility model.

[0020] Explanation of reference numerals in the attached figures

[0021] 1. First protrusion; 2. Tool body; 3. Top block; 4. Clearance groove; 5. Second protrusion; 6. Threaded rod; 7. Thrust ball bearing; 8. Conical part; 9. Handle; 10. Grip bar; 11. Limiting component; 12. Inclined outer wall. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0023] In this utility model, unless otherwise stated, directional words such as "upper," "lower," "inner," and "outer" included in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0024] like Figure 1-3 As shown, an auxiliary tool for installing engine fan disc bolts includes: a tool body 2 with a first protrusion 1 protruding outwards, and a top block 3 mounted on the tool body 2 by an adjustment mechanism and movable close to the first protrusion 1. A clearance groove 4 is provided through the first protrusion 1, which is directly opposite the top block 3 and whose length direction is consistent with the moving direction of the top block 3.

[0025] In the above technical solution, when it is necessary to pass the bolt through the fan plate, the fan plate is brought into contact with the side of the first protrusion 1 near the top block 3, and the through hole on the fan plate is aligned with the clearance groove 4. The end of the bolt away from the head is aligned with the through hole on the fan plate. The top block 3 moves close to the first protrusion 1, and the top block 3 pushes the head of the bolt close to the first protrusion 1. The bolt will then pass through the through hole on the fan plate, and the end of the bolt away from the head will be inserted into the clearance groove 4, so that the bolt is assembled on the fan plate. Using this tool to install the bolt is convenient and labor-saving.

[0026] After the bolt is pushed into the fan plate, the top block 3 moves away from the first protrusion 1, and then the tool body 2 moves along the axis of the bolt, so that the first protrusion 1 separates from the fan plate, and the tool can be removed.

[0027] This auxiliary tool is not only used for bolt installation on the fan disc, but can also be applied to bolt assembly in other parts of the engine during maintenance, making it widely applicable.

[0028] In a preferred embodiment of the invention, the tool body 2 has a second protrusion 5 that protrudes from the first protrusion 1. The adjustment mechanism includes a threaded rod 6 that is threaded through the second protrusion 5 and whose end near the first protrusion 1 is connected to the top block 3, and a handle that is connected to the end of the threaded rod 6 away from the first protrusion 1.

[0029] In the above technical solution, turning the handle can rotate the threaded rod 6, which can guide the top block 3 to move closer to or away from the first protrusion 1. When the top block 3 moves closer to the first protrusion 1, it can push the bolt into the through hole on the fan plate.

[0030] The threaded engagement of the threaded rod 6 allows for easier insertion of the bolt into the through hole on the fan plate.

[0031] In a preferred embodiment of the invention, the threaded rod 6 is connected to the top block 3 via a thrust ball bearing 7 arranged coaxially.

[0032] In the above technical solution, after the top block 3 comes into contact with the head of the bolt, the threaded rod 6 continues to rotate. The threaded rod 6 will not drive the top block 3 to rotate synchronously. This can prevent relative rotation between the top block 3 and the bolt, thus protecting both the bolt and the top block 3.

[0033] In a preferred embodiment of the invention, a tapered portion 8, coaxial with the threaded rod 6, is provided on the side of the top block 3 near the clearance groove 4.

[0034] In the above technical solution, when the head of the bolt has a polygonal groove, the conical part 8 can be inserted into the polygonal groove for positioning to prevent the bolt from shifting; and by directly inserting the conical part 8 into the through hole on the fan plate, the through hole on the fan plate can be simply enlarged, which helps the bolt to be inserted into the through hole on the fan plate.

[0035] In a preferred embodiment of the invention, the tool body 2 is provided with a handle 9.

[0036] In the above technical solution, the handle 9 is easy for the operator to hold, thereby improving the control of the tool. When holding the handle 9, it is also easy for the operator to turn the handle.

[0037] In a preferred embodiment of the invention, the handle includes a grip 10 that slides through the end of the threaded rod 6 and whose length direction is perpendicular to the length direction of the threaded rod 6, and both ends of the grip 10 are fitted with limit members 11.

[0038] In the above technical solution, the function of the limiting member 11 is to prevent the grip 10 from slipping off the end of the threaded rod 6; the grip 10 can slide on the end of the threaded rod 6, and the position of the grip 10 can be adjusted to facilitate the operator to apply force to rotate the grip 10.

[0039] In a preferred embodiment of the invention, the first protrusion 1 is provided with an inclined outer wall 12 on the side opposite to the top block 3, and the end of the clearance groove 4 away from the top block 3 is located on the inclined outer wall 12.

[0040] In the above technical solution, the inclined outer wall 12 can reduce the length of the clearance groove 4, making it easier for operators to observe the bolts passing through the fan disc.

[0041] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0043] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An auxiliary tool for installing engine fan disc bolts, characterized in that, include: A tool body (2) with a first protrusion (1) protruding outwards and a top block (3) mounted on the tool body (2) by an adjustment mechanism and movable close to the first protrusion (1). A clearance groove (4) is provided through the first protrusion (1) facing the top block (3) and whose length direction is consistent with the moving direction of the top block (3).

2. The engine fan disc bolt installation auxiliary tool according to claim 1, characterized in that, The tool body (2) has a second protrusion (5) that is opposite to the first protrusion (1). The adjustment mechanism includes a threaded rod (6) that is threaded through the second protrusion (5) and connected to the top block (3) at the end near the first protrusion (1), and a handle that is connected to the end of the threaded rod (6) away from the first protrusion (1).

3. The engine fan disc bolt installation auxiliary tool according to claim 2, characterized in that, The threaded rod (6) is connected to the top block (3) via a thrust ball bearing (7) arranged on the same axis.

4. The engine fan disc bolt installation auxiliary tool according to claim 2, characterized in that, The top block (3) has a tapered part (8) on the side near the clearance groove (4) that is coaxial with the threaded rod (6).

5. The engine fan disc bolt installation auxiliary tool according to claim 1, characterized in that, A handle (9) is provided on the main body (2) of the tool.

6. The engine fan disc bolt installation auxiliary tool according to claim 2, characterized in that, The handle includes a grip (10) that slides through the end of the threaded rod (6) and whose length direction is perpendicular to the length direction of the threaded rod (6). Both ends of the grip (10) are equipped with limiters (11).

7. The engine fan disc bolt installation auxiliary tool according to claim 1, characterized in that, An inclined outer wall (12) is provided on the side of the first protrusion (1) facing away from the top block (3), and the end of the clearance groove (4) away from the top block (3) is located on the inclined outer wall (12).

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