Auxiliary disassembling and assembling tool for lubricating oil return filter of aero-engine

Abstract

The utility model relates to the technical field of aero-engine maintenance, and discloses an auxiliary dismounting tool for a lubricating oil return filter of an aero-engine, which adopts the scheme that a clamping hole matched with a lug at the end part of a lubricating oil return filter shell is formed in a base, and the rotation of the base along the circumferential direction of the lubricating oil return filter shell is limited through the clamping matching between the clamping hole and the lug, so that the lubricating oil return filter shell is prevented from being damaged. A screwing part is arranged in the axial direction of the base and is clamped by a wrench, the screwing part is screwed by the wrench, then the base clamped with the lubricating oil return filter shell synchronously drives the lubricating oil return filter shell to rotate, and finally the lubricating oil return filter shell is disassembled; due to the arrangement of the screwing part, an operation space is provided for a worker to disassemble the lubricating oil return filter shell, so that the worker has a better force application point; and meanwhile, the situation that when a traditional iron rod is adopted for disassembly, threads on the lubricating oil return filter shell are stressed unevenly, and consequently the threads are seized or damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft engine maintenance, in particular to an auxiliary disassembly and assembly tool for an aircraft engine lubricating oil return filter. Background Art

[0002] During the replacement of the oil return filter of the CFM56 aircraft engine, it is often encountered that the oil return filter housing of the engine is difficult to disassemble due to the lack of appropriate tools, and even the oil return filter housing is damaged during the removal process. The above situation occurs because the oil return filter housing is currently being disassembled. Figure 6 As shown, a simple iron rod is usually used to clamp onto two spaced-apart protrusions provided at the end of the lubricating oil return filter housing. The lubricating oil return filter housing is disassembled by rotating the iron rod and engaging with the two protrusions. Since a large number of engine parts are distributed around the end of the lubricating oil return filter housing (occupying the space around the end of the lubricating oil return filter housing), there is almost no operating space around the end of the lubricating oil return filter housing. Using only a simple iron rod makes it difficult for workers to find a suitable force point, resulting in inconvenience in disassembly. Utility Model Content

[0003] The purpose of the utility model is to provide an auxiliary disassembly and assembly tool for an aircraft engine lubricating oil return filter, which is used to solve the problem in the prior art that there is no suitable tool for convenient and safe disassembly of the aircraft engine lubricating oil return filter housing.

[0004] To achieve the above objectives, the present invention provides an auxiliary disassembly and assembly tool for an aircraft engine oil return filter, comprising:

[0005] A base, wherein the base is provided with a snap-fitting hole corresponding to the protrusion at the end of the lubricating oil return filter housing, and the protrusion is correspondingly snapped into the snap-fitting hole to limit the circumferential rotation of the base relative to the lubricating oil return filter housing; and

[0006] The screwing portion is arranged along the axial direction of the base, the screwing portion and the clamping hole are staggered, the screwing portion is fixedly connected to the base, and the screwing portion is clamped by a wrench to screw the base.

[0007] In some embodiments of the present application, the snap-in hole is provided on the edge of the base, so that the snap-in hole is connected to the outside world away from one axial end of the base.

[0008] In some embodiments of the present application, the clamping hole is arranged on the edge of the base so that the clamping hole is away from the base axis. The clamping hole has a first abutting surface and a second abutting surface along the circumference of the base. The protrusion is clamped in the clamping hole and the screwing part is screwed so that the first abutting surface and / or the second abutting surface abut against the protrusion.

[0009] In some embodiments of the present application, the snap-in hole is arranged on the edge of the base so that the snap-in hole is away from the base axis, and the screwing part includes a screwing rod fixedly connected to the base, and the outer periphery of the screwing rod has at least two parallel clamping surfaces.

[0010] In some embodiments of the present application, the snap-fitting hole is provided at the edge of the base so that the snap-fitting hole is away from the base axis, and the screwing portion is provided coaxially with the base.

[0011] In some embodiments of the present application, the snap-in hole is provided at the edge of the base so that the snap-in hole is away from the base axis, and the screw rod is integrally formed with the base or connected via welding.

[0012] In some embodiments of the present application, the snap-in hole is provided at the edge of the base so that the snap-in hole is away from the base axis, and the outer diameter of the base is 28 mm and the height is 10 mm.

[0013] In some embodiments of the present application, the snap-in hole is arranged on the edge of the base so that the snap-in hole is away from the base axis, and the length of the line between the first abutting surface away from the axial end of the base and the second abutting surface away from the axial end of the base is 23 mm.

[0014] Compared with the prior art, the utility model discloses an auxiliary disassembly and assembly tool for an aircraft engine oil return filter, and its beneficial effects are as follows: the scheme sets a clamping hole on the base that matches the protrusion at the end of the oil return filter housing, and limits the rotation of the base along the circumference of the oil return filter housing through the clamping cooperation between the clamping hole and the protrusion, and arranges a screwing part along the axial direction of the base for a wrench to clamp and screw the screwing part by the wrench, thereby synchronously driving the oil return filter housing to rotate through the base that is clamped with the oil return filter housing, and finally realizing the disassembly of the oil return filter housing; the setting of the screwing part provides operating space for the staff to disassemble the oil return filter housing, so that the staff has a better force application point; at the same time, it also avoids the situation that the threads on the oil return filter housing are unevenly stressed when using a traditional iron rod for disassembly, resulting in thread biting or thread damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic top view of the overall structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the auxiliary disassembly and assembly tool of the utility model and the oil return filter housing in a separated state;

[0018] Figure 4 This is a schematic diagram of the working state of the auxiliary disassembly and assembly tool of the utility model;

[0019] Figure 5 This is a schematic diagram of the position relationship between the lubricating oil return filter housing and the engine of the utility model;

[0020] Figure 6 This is a schematic diagram of the method of disassembling the lubricating oil return filter housing in the prior art.

[0021] In the figure, 1, base; 11, clamping hole; 111, first abutting surface; 112, second abutting surface;

[0022] 2. Lubricating oil return filter housing; 21. Bump;

[0023] 3. Twist rod; 31. Clamping surface; 4. Iron rod; 5. Engine outer contour. DETAILED DESCRIPTION

[0024] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc., indicating the 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 the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0026] like Figures 1-6As shown, an embodiment of the present application proposes an auxiliary disassembly and assembly tool for an aircraft engine lubricating oil return filter, comprising a base 1, on which is provided a snap-in hole 11 corresponding to a protrusion 21 at the end of the lubricating oil return filter housing 2, the protrusion 21 being snapped into the snap-in hole 11 to limit the circumferential rotation of the base 1 relative to the lubricating oil return filter housing 2; and a screwing portion, which is arranged axially along the base 1, the screwing portion and the snap-in hole 11 being staggered, and the screwing portion is fixedly connected to the base 1; the screwing portion is used to cooperate with a wrench and rotate the base 1 through the wrench. During the specific implementation of this embodiment, the staff first needs to adjust the positions of the clamping hole 11 on the base 1 and the protrusion 21 provided at the end of the lubricating oil return filter housing 2 to correspond to each other, and then move it toward the end of the lubricating oil return filter housing 2 so that the protrusion 21 enters the corresponding clamping hole 11 and is clamped in the clamping hole 11. Then, with the help of an external wrench, the screwing part is clamped and force is applied, and the base 1 is synchronously driven to rotate through the screwing part. Due to the clamping between the protrusion 21 and the clamping hole 11, the lubricating oil return filter housing 2 will be synchronously driven to rotate, and finally the lubricating oil return filter housing 2 is disassembled.

[0027] In this solution, by arranging the screwing portion along the axial direction of the base 1, the operator has a certain operating space when using the wrench to tighten, so that the operating surface for applying force is no longer in close contact with the outer contour of the engine (which results in the operator having no suitable space for applying force), and a certain distance is left between the operating surface for applying force and the outer contour 5 of the engine (the engine parts around the oil return filter housing 2), so as to facilitate the operation of the wrench for disassembly; compared with the existing disassembly method, the disassembly work of the operator is facilitated, and at the same time, damage to the engine parts and piping system around the end of the oil return filter housing is avoided during the disassembly process; Figure 5 As shown, since a large number of engine parts and piping systems are distributed around the end of the lubricating oil return filter housing, the presence of the above-mentioned engine parts and piping systems makes it difficult for workers to find a suitable force-applying operating surface for disassembling the lubricating oil return filter housing. Moreover, during the disassembly process using an iron rod, it is easy to accidentally touch the surrounding parts and pipelines, thereby causing unnecessary damage. The use of the auxiliary disassembly and assembly tools in this solution can better avoid the occurrence of the above-mentioned situation.

[0028] In some embodiments of the present application, Figure 1 、 Figure 2 As shown, the snap-in hole 11 is arranged on the edge of the base 1 so that the snap-in hole 11 is connected to the outside world away from one axial end of the base 1. On the one hand, this arrangement makes it easier for the staff to operate the base 1 and allows the protrusion 21 to be snapped into the corresponding snap-in hole 11; on the other hand, it also further reduces the weight of the auxiliary disassembly and assembly tool.

[0029] In some embodiments of the present application, Figure 1 、 Figure 2As shown, the snap-fitting hole 11 has a first abutting surface 111 and a second abutting surface 112 along the circumference of the base 1. When the protrusion 21 is snapped into the snap-fitting hole 11 and the screwing part is screwed, the first abutting surface 111 and the second abutting surface 112 both abut against the outer periphery of the protrusion 21, or only the first abutting surface 111 or the second abutting surface 112 abuts against the outer periphery of the protrusion 21; that is, the size of the protrusion 21 along the circumference of the lubricating oil return filter housing 2 is less than or equal to the size of the snap-fitting hole 11 along the circumference of the lubricating oil return filter housing 2, so as to ensure that the protrusion 21 can be snapped into the snap-fitting hole 11.

[0030] If the size of the protrusion 21 along the circumference of the oil return filter housing 2 is equal to the size of the clamping hole 11 along the circumference of the oil return filter housing 2, then the first abutting surface 111 and the second abutting surface 112 are both in contact with the outer periphery of the protrusion 21 (e.g. Figure 4 As shown), by clamping the screwing part with a wrench and rotating it, the oil return filter housing 2 can be driven to rotate synchronously through the base 1, thereby realizing the disassembly process; if the size of the protrusion 21 along the circumference of the oil return filter housing 2 is smaller than the size of the clamping hole 11 along the circumference of the oil return filter housing 2, by clamping the screwing part with a wrench and rotating it, the first abutting surface 111 abuts against the outer periphery of the protrusion 21 (the second abutting surface 112 does not contact the outer periphery of the protrusion 21) or the second abutting surface 112 abuts against the outer periphery of the protrusion 21 (the first abutting surface 111 does not contact the outer periphery of the protrusion 21), which can also achieve the effect of driving the oil return filter housing 2 to rotate and disassemble.

[0031] In some embodiments of the present application, Figure 1 、 Figure 2 As shown, the screwing part includes a screwing rod 3 fixedly connected to the base 1, and the outer periphery of the screwing rod 3 has at least two parallel clamping surfaces 31 (the attached figure of this scheme shows an example of three groups of parallel clamping surfaces 31). The staff can clamp the clamping surface 31 with a wrench to screw. Specifically: the wrench can be a fixed wrench, a combination wrench, a box wrench, etc.

[0032] In some embodiments of the present application, if the existing Figure 6 In the disassembly method, since the iron rod 4 is clamped with the protrusion 21 for disassembly, the direction of the torque acting on the oil return filter housing 2 is difficult to be coaxial with the oil return filter housing 2, which in turn causes the threads on the oil return filter housing 2 to be subjected to lateral force, causing the threads to be stuck or damaged; in this solution, the screwing rod 3 is set coaxially with the base 1, so that when screwing with the help of a wrench, the direction of the applied torque can be coaxial with the oil return filter housing 2, thereby effectively avoiding the situation in which the bolts are stuck or the threads are damaged due to the difficulty of the torque to keep the coaxiality with the oil return filter housing 2 during the disassembly process.

[0033] In some embodiments of the present application, the screw rod 3 is integrally connected to the base 1 (prepared by integral stamping), or is fixedly connected by welding.

[0034] In some embodiments of the present application, the base 1 has an outer diameter of 28 mm and a height of 10 mm.

[0035] In some embodiments of the present application, the length of a line connecting an axial end of the first abutting surface 111 away from the base 1 and an axial end of the second abutting surface 112 away from the base 1 is 23 mm.

[0036] The working process of the utility model is as follows: when the lubricating oil return filter housing 2 needs to be disassembled, the staff holds the auxiliary disassembly and assembly tool, and makes the position of the clamping hole 11 on the base 1 correspond to the position of the protrusion 21 at the end of the lubricating oil return filter housing 2, and then moves the auxiliary disassembly and assembly tool toward the lubricating oil return filter housing 2, so that the protrusion 21 enters the clamping hole 11 and is clamped in the clamping hole 11, and then uses a wrench to clamp the screwing part and apply torque to drive the base 1 to rotate, and then synchronously drive the lubricating oil return filter housing 2 to rotate, and finally achieves the effect of disassembling the lubricating oil return filter housing 2.

[0037] In summary, the embodiment of the utility model provides an auxiliary disassembly and assembly tool for the oil return filter of an aircraft engine. This scheme provides a clamping hole 11 on the base 1 that cooperates with the protrusion 21 at the end of the oil return filter housing 2. The clamping cooperation between the clamping hole 11 and the protrusion 21 limits the rotation of the base 1 along the circumferential direction of the oil return filter housing 2, and a screwing portion is arranged along the axial direction of the base 1 for a wrench to clamp and screw the screwing portion by the wrench, thereby synchronously driving the oil return filter housing 2 to rotate through the base 1 clamped with the oil return filter housing 2, and finally realizing the disassembly of the oil return filter housing 2; the setting of the screwing portion provides operating space for the staff to disassemble the oil return filter housing 2, so that the staff has a better force application point; at the same time, it also avoids the situation where the threads on the oil return filter housing 2 are unevenly stressed when using the traditional iron rod 4 for disassembly, resulting in thread biting or thread damage.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. An auxiliary disassembly and assembly tool for an aircraft engine lubricating oil return filter, characterized in that: include: A base (1), wherein the base (1) is provided with a snap-fitting hole (11) for corresponding to a protrusion (21) at the end of the lubricating oil return filter housing (2), and the protrusion (21) is snap-fitted into the snap-fitting hole (11) to limit the circumferential rotation of the base (1) relative to the lubricating oil return filter housing (2); as well as The screwing portion is arranged along the axial direction of the base (1), the screwing portion and the clamping hole (11) are staggered, the screwing portion is fixedly connected to the base (1), and the screwing portion is clamped by a wrench to screw the base (1).

2. The aircraft engine oil return filter auxiliary disassembly and assembly tool according to claim 1, characterized in that: The clamping hole (11) is provided at the edge of the base (1), so that the clamping hole (11) is communicated with the outside world at one axial end away from the base (1).

3. The aircraft engine oil return filter auxiliary disassembly and assembly tool according to claim 1, characterized in that: The engaging hole (11) has a first abutting surface (111) and a second abutting surface (112) along the circumference of the base (1); the protrusion (21) is engaged in the engaging hole (11) and the screwing portion is screwed so that the first abutting surface (111) and / or the second abutting surface (112) abut against the protrusion (21).

4. The aircraft engine oil return filter auxiliary disassembly and assembly tool according to claim 1, characterized in that: The screwing portion comprises a screwing rod (3) fixedly connected to the base (1); the outer periphery of the screwing rod (3) has at least two parallel clamping surfaces (31).

5. The aircraft engine oil return filter auxiliary disassembly and assembly tool according to claim 1, characterized in that: The screwing portion and the base (1) are coaxially arranged.

6. The aircraft engine oil return filter auxiliary disassembly and assembly tool according to claim 4, characterized in that: The screw rod (3) and the base (1) are connected in one piece or by welding.

7. The aircraft engine oil return filter auxiliary disassembly and assembly tool according to claim 1, characterized in that: The base (1) has an outer diameter of 28 mm and a height of 10 mm.

8. The aircraft engine oil return filter auxiliary disassembly and assembly tool according to claim 3, characterized in that: The length of a line connecting an axial end of the first abutting surface (111) away from the base (1) and an axial end of the second abutting surface (112) away from the base (1) is 23 mm.

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