Oil pipe decomposition device

Abstract

The invention discloses an oil pipe decomposition device, relates to the field of aero-engines, and is used for realizing rapid and lossless disassembly of an oil supply pipe. The oil pipe decomposition device comprises a mounting base, a shear fork mechanism, a first top plate, a second top plate and a driving mechanism. The shear fork mechanism comprises a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are arranged in a crossed mode. The first top plate is mounted on the first connecting piece; the second top plate is installed on the second connecting piece. And the driving mechanism is mounted on the mounting seat and is in driving connection with the shear fork mechanism so as to change the angle of the shear fork mechanism. According to the technical scheme, the oil pipe decomposition device is very small in size and can be placed at any narrow position of a pipeline gap, the complex environment where an oil supply pipe on an interstage casing is located is considered, horizontal movement of the driving mechanism can be converted into vertical movement of the first top plate and the second top plate, lossless and rapid decomposition of the oil supply pipe is achieved, and the oil pipe decomposition efficiency is improved. The operation is very convenient.

Description

Technical Field

[0001] The invention relates to the field of aviation engine assembly, and in particular to an oil pipe disassembly device. Background Art

[0002] The aircraft engine turbine interstage casing is the main supporting frame of the rear support point of the high-pressure component. It includes the outer casing, straightening blades, load-bearing support plates, inner casing, bearing seat assembly, oil supply pipe, oil return pipe, oil drain pipe, auxiliary oil drain pipe, ventilation pipe and sealing parts between the low-pressure turbine.

[0003] The function of the oil supply pipe is to provide lubricating oil to the bearings. Taking the oil supply pipe connection of a certain type of civil aircraft engine as an example, the parts of the oil supply pipe located inside and outside the interstage casing are fixed to the inner and outer wall mounting seats of the turbine interstage casing through high-temperature expansion sealing rings. Since the turbine interstage casing is a high-temperature component, as the engine running hours increase, the outer mounting seat of the oil supply pipe will adhere to the outer wall of the casing. In addition, the sealing ring attached to the inner wall of the casing and the bearing seat will expand at high temperatures, causing the oil supply pipe to be tightly attached to the turbine interstage casing. The oil supply pipe cannot be separated manually, and a large external force is required to achieve the disassembly of the oil supply pipe.

[0004] The inventors have found that there are at least the following problems in the prior art: In the related art, one method is to use a plastic hammer to hit the joint of the oil supply pipe, and vibrate the oil supply pipe through the impact force of the hammer head, so as to achieve the disassembly of the oil supply pipe. The striking force of the hammer head is too large, which can easily cause the oil supply pipe to deform. Another method is to use a special tool to disassemble the oil supply pipe, but the existing tool itself has a complex structure, and the disassembly tool needs to be assembled before disassembling the oil supply pipe, and the operation process is cumbersome. Summary of the invention

[0005] The invention provides an oil pipe disassembly device for realizing rapid and non-destructive disassembly of an oil supply pipe.

[0006] An embodiment of the present invention provides an oil pipe disassembly device, comprising:

[0007] Mounting seat;

[0008] A scissor mechanism comprises a first connecting member and a second connecting member, wherein the first connecting member and the second connecting member are arranged crosswise;

[0009] A first top plate, mounted on the first connecting member;

[0010] A second top plate mounted on the second connecting member; and

[0011] The driving mechanism is mounted on the mounting seat and is drivingly connected to the scissor-fork mechanism to change the angle of the scissor-fork mechanism.

[0012] In some embodiments, the number of the scissor-fork mechanisms is two, the two scissor-fork mechanisms are arranged at intervals, the first connecting members of the two scissor-fork mechanisms are rotatably connected, and the second connecting members of the two scissor-fork mechanisms are rotatably connected.

[0013] In some embodiments, the oil pipe disassembly device further comprises:

[0014] a first fixing member, one end of the first connecting member and one end of the second connecting member being rotatably connected to the first fixing member; and

[0015] a second fixing member, the other end of the first connecting member and the other end of the second connecting member being rotatably connected to the second fixing member;

[0016] Wherein, the driving mechanism is fixedly connected to the first fixing member or the second fixing member.

[0017] In some embodiments, the driving mechanism includes a screw rod; the mounting seat is correspondingly provided with a screw hole; the screw rod is installed in the screw hole, and both ends of the screw rod extend out of the screw hole; one end of the screw rod is fixedly connected to the fixing member or the second fixing member, and the other end of the screw rod is a free end.

[0018] In some embodiments, the other end of the first connecting member is rotatably connected to the second fixing member through the first oblong hole.

[0019] In some embodiments, one end of the second connecting member is rotatably connected to the first fixing member through a second oblong hole.

[0020] In some embodiments, the mount comprises:

[0021] a bottom plate, the driving mechanism being mounted on the bottom plate; and

[0022] The side plates are arranged in pairs, each of which is fixed to the side of the bottom plate or is integral with the bottom plate; the scissor mechanism is located between the two side plates and is rotatably connected to each of the side plates.

[0023] In some embodiments, the first top plate includes a first inner recess for accommodating a pipeline.

[0024] In some embodiments, the second top plate includes a second inner recess for accommodating a pipeline.

[0025] In some embodiments, the first top plate and the second top plate are arranged at intervals, and the interval between the first top plate and the second top plate changes with the deformation of the scissor mechanism.

[0026] The oil pipe disassembly device provided by the above technical solution takes into account the complex environment of the oil supply pipe on the interstage casing. In order to reduce the impact of the pipelines distributed on the periphery of the interstage casing, the oil pipe disassembly device used is very small in size. The oil pipe disassembly device can be placed at any narrow position in the pipeline gap, and the horizontal movement of the driving mechanism can be converted into vertical movement of the first top plate and the second top plate. Only a small operating space is required to achieve lossless and rapid disassembly of the oil supply pipe, and the operation is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 A schematic diagram of the use status of the oil pipe disassembly device provided in an embodiment of the present invention.

[0029] Figure 2 A schematic diagram of the three-dimensional structure of an oil pipe disassembly device provided in an embodiment of the present invention.

[0030] Figure 3 A schematic cross-sectional structural diagram of an oil pipe disassembly device provided in an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the main structure of the oil pipe disassembly device provided in an embodiment of the present invention.

[0032] Figure 5 A schematic diagram of the top structure of an oil pipe disassembly device provided in an embodiment of the present invention.

[0033] Reference numerals:

[0034] 1. Mounting seat; 2. Scissor mechanism; 3. First top plate; 4. Second top plate; 5. Driving mechanism; 6. First fixing member; 7. Second fixing member; 8. Fixing seat; 9. Fixing nut; 10. Casing; 14. Oil supply pipe;

[0035] 11. Screw hole; 12. Bottom plate; 13. Side plate;

[0036] 21. a first connecting member; 22. a second connecting member;

[0037] 31. The first inner concave part; 41. The second inner concave part;

[0038] 61. first oblong hole; 62. first circular hole;

[0039] 71. Second oblong hole; 72. Second circular hole. DETAILED DESCRIPTION

[0040] Combine the following Figure 1 to Figure 5 The technical solution provided by the present invention is described in more detail.

[0041] The aircraft engine turbine interstage casing 10 is the main support frame of the rear support point of the high-pressure component, which includes an outer casing, straightening blades, a load-bearing support plate, an inner casing, a No. 4 bearing seat assembly, an oil supply pipe 14, an oil return pipe, an oil drain pipe, an auxiliary oil drain pipe, a ventilation pipe and a seal between the low-pressure turbine.

[0042] The oil supply pipe 14 provides lubricating oil for the bearing. The two ends of the oil supply pipe 14 are located outside the interstage casing 10, and the middle part of the oil supply pipe 14 is located inside the interstage casing 10. The parts of the oil supply pipe 14 located inside and outside the interstage casing 10 are fixed to the inner and outer wall fixing seats 8 of the turbine interstage casing 10 respectively through high-temperature expansion sealing rings. The turbine interstage casing 10 is a high-temperature component. As the engine running time increases, the outer fixing seat 8 of the oil supply pipe 14 will adhere to the outer wall of the interstage casing 10. In addition, the sealing ring (not shown) attached to the inner wall of the interstage casing 10 and the bearing seat will expand at high temperature, so that the oil supply pipe 14 is tightly attached to the turbine interstage casing 10, and the oil supply pipe 14 cannot be manually disassembled. With the oil pipe disassembly device provided in the embodiment of the present invention, the oil supply pipe 14 can be disassembled without damage and conveniently, and the oil pipe disassembly device itself can be used directly without assembly, and the disassembly efficiency is extremely high.

[0043] See also Figure 1 and Figure 2 The embodiment of the present invention provides an oil pipe disassembly device, and each oil supply pipe 14 is disassembled using an oil pipe disassembly device. Multiple oil supply pipes 14 are installed on the interstage casing 10, and multiple oil pipe disassembly devices can be used to disassemble the multiple oil supply pipes 14. The disassembly of each oil supply pipe 14 is independent of each other and does not affect each other, which greatly improves the disassembly efficiency of the oil supply pipe 14.

[0044] The oil pipe disassembly device includes a mounting seat 1, a scissor mechanism 2, a first top plate 3, a second top plate 4 and a driving mechanism 5. The scissor mechanism 2 includes a first connecting member 21 and a second connecting member 22, which are arranged crosswise and rotatably connected. The first top plate 3 is mounted on the first connecting member 21; the second top plate 4 is mounted on the second connecting member 22. The driving mechanism 5 is mounted on the mounting seat 1 and is drivingly connected to the scissor mechanism 2 to change the crossing angle of the scissor mechanism 2, thereby changing the shape of the scissor mechanism 2.

[0045] See also Figures 2 to 4The mounting base 1 is used to provide support so that the oil pipe disassembly device is connected to form a whole. The mounting base 1 includes a bottom plate 12 and a side plate 13. The mounting base 1 is roughly U-shaped. The side plates 13 are arranged in pairs, and two side plates 13 are provided in the embodiment of the present invention. Each side plate 13 is fixed to the side of the bottom plate 12 or is integral with the bottom plate 12. The mounting base 1 can be made of a light and high-strength material, and the oil pipe disassembly device is hand-held, which can reduce the workload of hand-holding and make the operation of the operator more labor-saving and convenient.

[0046] See also Figures 2 to 4 In any of the figures, the driving mechanism 5 is mounted on the base plate 12. In some embodiments, the driving mechanism 5 includes a screw. The mounting seat 1 is correspondingly provided with a screw hole 11. The screw is mounted in the screw hole 11, and both ends of the screw extend out of the screw hole 11; one end of the screw is fixedly connected to the fixing member or the second fixing member 7, and the other end of the screw is a free end. By rotating the screw, the extension length of the screw on both sides of the screw hole 11 can be changed, thereby driving the scissors mechanism 2 to change shape. By driving the scissors mechanism 2 to deform by rotating the screw, the scissors mechanism 2 can be deformed stably, controllably and reliably, so that the shape of the scissors mechanism 2 will not change suddenly, so that the oil supply pipe 14 can be disassembled more stably.

[0047] When disassembling the oil supply pipe 14, affected by the peripheral pipelines, the operating space for the disassembly work is very small. In the technical solution provided by the embodiment of the present invention, the operating direction of the oil pipe disassembly device is consistent with the installation direction. As long as a gap can be found to insert the oil pipe disassembly device, the operation of disassembling the oil supply pipe 14 can be achieved.

[0048] See also Figure 2 The scissor mechanism 2 is located between the two side plates 13 and is rotatably connected to each side plate 13. The base accommodates part of the scissor mechanism 2, which makes the size of the oil pipe decomposition device more compact and occupies less space.

[0049] See also Figure 2 In some embodiments, there are two scissor mechanisms 2, which are arranged at intervals, and the first connecting members 21 of the two scissor mechanisms 2 are rotatably connected, and the second connecting members 22 of the two scissor mechanisms 2 are rotatably connected. The two scissor mechanisms 2 allow the first top plate 3 and the second top plate 4 to each have more connection positions with the scissor mechanisms 2, and the movement of the first top plate 3 and the second top plate 4 is more stable.

[0050] In some embodiments, the first connecting member 21 and the second connecting member 22 are arranged crosswise, and the hinge point is O, similar to scissors. It should be noted that the intersection of the first connecting member 21 and the second connecting member 22 may be hinged or not. By pushing any one of the first connecting member 21 and the second connecting member 22 to rotate around the hinge point O, the shape of the scissor mechanism 2 can be changed, thereby changing the distance between the first top plate 3 and the second top plate 4, that is, the distance in the Y direction.

[0051] See also Figure 2 In some embodiments, the first top plate 3 and the second top plate 4 are arranged at intervals, and the interval between the first top plate 3 and the second top plate 4 changes with the deformation of the scissor mechanism 2. The first top plate 3 and the second top plate 4 are both flat plates, or other shapes that can form surface-to-surface contact with the fixing seat 8 and the fixing nut 9 described later, so that the contact area between the oil pipe disassembly device and the fixing seat 8 and the fixing nut 9 can be increased, so that when the oil supply pipe 14 is disassembled, the oil pipe disassembly device is not easy to separate from the fixing seat 8 and the fixing nut 9, making the disassembly operation more stable.

[0052] See also Figure 2 and Figure 5 In some embodiments, the first top plate 3 includes a first inner recess 31 for accommodating a pipeline. The pipeline is specifically an oil supply pipe 14. The first inner recess 31 matches the outer shape of the oil supply pipe 14. The concave surface of the first inner recess 31 abuts against the outer side of the oil supply pipe 14.

[0053] See also Figure 2 and Figure 5 In some embodiments, the second top plate 4 includes a second inner recess 41 for accommodating a pipeline. The pipeline is specifically an oil supply pipe 14. The second inner recess 41 matches the outer shape of the oil supply pipe 14. The concave surface of the second inner recess 41 abuts against the outer side of the oil supply pipe 14.

[0054] Continue to see Figure 2 In order to make the installation of the first top plate 3 and the second top plate 4 easier and more reliable, in some embodiments, the oil pipe decomposition device also includes a first fixing member 6 and a second fixing member 7. The first fixing member 6 and the second fixing member 7 can both be long strips. The first fixing member 6 can be fixedly connected to the first top plate 3 or integrated. The second fixing member 7 can be fixedly connected to the second top plate 4 or integrated. One end A1 of the first connecting member 21 and one end B1 of the second connecting member 22 are both rotatably connected to the first fixing member 6. The other end A2 of the first connecting member 21 and the other end B2 of the second connecting member 22 are both rotatably connected to the second fixing member 7. Among them, the driving mechanism 5 is fixedly connected to the first fixing member 6 or the second fixing member 7. The driving mechanism 5 only drives one of the first fixing member 6 and the second fixing member 7 to move linearly along the X direction, so that the scissor mechanism 2 can be deformed.

[0055] See also Figure 2 Specifically, one end A1 of the two first connecting members 21 is rotatably connected to the first fixing member 6 through the first circular hole 62 and the pin. The other end A2 of the two first connecting members 21 is rotatably connected to the second fixing member 7 through the first oblong hole 61 and the pin. One end B1 of the two second connecting members 22 is rotatably connected to the first fixing member 6 through the pin and the second oblong hole 71. The other end B2 of the two second connecting members 22 is rotatably connected to the second fixing member 7 through the second circular hole 72 and the pin. When the screw is rotated, the pin can be driven to move in the oblong hole to change the angle between the first connecting member 21 and the second connecting member 22 in the scissor-type distribution, thereby changing the distance between the first top plate 3 and the second top plate 4.

[0056] The change of direction of motion is as follows: Figure 4 , the screw is rotated, and the screw drives the distance between the first top plate 3 and the second top plate 4 to change through linear motion relative to the mounting base 1. That is, the movement of the screw along the X direction is converted into the movement of the first top plate 3 and the second top plate 4 along the Y direction.

[0057] The operation process of the oil pipe disassembly device is as follows: the oil pipe disassembly device is adjusted to the initial state, in which the distance between the first top plate 3 and the second top plate 4 is the shortest. Then the first top plate 3 and the second top plate 4 are placed in the gap between the fixing nut 9 and the fixing seat 8 of the oil supply pipe 14, one of the first top plate 3 and the second top plate 4 is close to the fixing nut 9, and the other is close to the fixing seat 8. The fixing nut 9 acts as a movable part, and the fixing seat 8 acts as a fixed part. The driving mechanism 5 is rotated to make the driving mechanism 5 move along the X direction. Since the driving mechanism 5 is fixedly connected to the first fixing member 6, the linear movement of the driving mechanism 5 will drive the second fixing member 7 to move linearly. The first inner concave portion 31 of the first top plate 3 and the second inner concave portion 41 of the second top plate 4 are both stuck on the outer wall of the oil supply pipe 14, and the first top plate 3 and the second top plate 4 cannot move along the X direction, so the scissor mechanism 2 will be deformed under the action of the driving mechanism 5, and the angle between the line connecting A1A2 and the line connecting B1B2 will increase. Therefore, the distance between the first top plate 3 and the second top plate 4 will increase. The scissor mechanism 2 is driven to deform, and the deformation of the scissor mechanism 2 drives the distance between the first top plate 3 and the second top plate 4 to change, so that one of the first top plate 3 and the second top plate 4 abuts against the fixing nut 9, and the other one abuts against the fixing seat 8. The driving mechanism 5 continues to rotate, and the distance between the first top plate 3 and the second top plate 4 continues to increase until the high-temperature sealing ring on the oil supply pipe 14 is disengaged from the fixing seat 8, and the oil supply pipe 14 is disassembled.

[0058] The above technical solution is simple to operate. Only a simple screwing operation is required to realize the opening and closing of the first top plate 3 and the second top plate 4 of the oil pipe disassembly device, and to realize the disassembly of the oil supply pipe 14 with a large interference. In addition, considering the complex environment in which the oil supply pipe 14 on the interstage casing 10 is located, in order to reduce the influence of the pipelines distributed on the periphery of the interstage casing 10, the size of the oil pipe disassembly device used is very small, and the oil pipe disassembly device can be placed at any narrow position of the pipeline gap, and the horizontal movement of the driving mechanism 5 can be converted into the vertical movement of the first top plate 3 and the second top plate 4, and only a small operating space is required to realize the lossless and rapid disassembly of the oil supply pipe 14, and the operation is very convenient.

[0059] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil pipe disassembly device, characterized in that: include: Mounting seat (1); A scissor mechanism (2) comprises a first connecting member (21) and a second connecting member (22), wherein the first connecting member (21) and the second connecting member (22) are arranged crosswise; A first top plate (3) mounted on the first connecting member (21); a second top plate (4) mounted on the second connecting member (22); and A driving mechanism (5) is mounted on the mounting seat (1) and is drivingly connected to the scissor mechanism (2) to change the angle of the scissor mechanism (2).

2. The oil pipe disassembly device according to claim 1, characterized in that: The number of the scissor-fork mechanisms (2) is two, the two scissor-fork mechanisms (2) are arranged at intervals, the first connecting members (21) of the two scissor-fork mechanisms (2) are rotatably connected, and the second connecting members (22) of the two scissor-fork mechanisms (2) are rotatably connected.

3. The oil pipe disassembly device according to claim 2, characterized in that: Also includes: a first fixing member (6), one end of the first connecting member (21) and one end of the second connecting member (22) being rotatably connected to the first fixing member (6); as well as a second fixing member (7), the other end of the first connecting member (21) and the other end of the second connecting member (22) being rotatably connected to the second fixing member (7); Wherein, the driving mechanism (5) is fixedly connected to the first fixing member (6) or the second fixing member (7).

4. The oil pipe disassembly device according to claim 3, characterized in that: The driving mechanism (5) comprises a screw rod; the mounting seat (1) is correspondingly provided with a screw hole (11); the screw rod is mounted in the screw hole (11), and both ends of the screw rod extend out of the screw hole (11); one end of the screw rod is fixedly connected to the fixing member or the second fixing member (7), and the other end of the screw rod is a free end.

5. The oil pipe disassembly device according to claim 3, characterized in that: The other end of the first connecting member (21) is rotatably connected to the second fixing member (7) via a first oblong hole (61).

6. The oil pipe disassembly device according to claim 3, characterized in that: One end of the second connecting member (22) is rotatably connected to the first fixing member (6) via a second oblong hole (71).

7. The oil pipe disassembly device according to claim 1, characterized in that: The mounting seat (1) comprises: a bottom plate (12), the driving mechanism (5) being mounted on the bottom plate (12); and The side plates (13) are arranged in pairs, and each of the side plates (13) is fixed to a side edge of the bottom plate (12) or is integral with the bottom plate (12); the scissor mechanism (2) is located between the two side plates (13) and is rotatably connected to each of the side plates (13).

8. The oil pipe disassembly device according to claim 1, characterized in that: The first top plate (3) comprises a first inner recess (31) for accommodating a pipeline.

9. The oil pipe disassembly device according to claim 1, characterized in that: The second top plate (4) comprises a second inner recess (41) for accommodating a pipeline.

10. The oil pipe disassembly device according to claim 1, characterized in that: The first top plate (3) and the second top plate (4) are arranged at intervals, and the interval between the first top plate (3) and the second top plate (4) changes with the deformation of the scissor mechanism (2).

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