Quick release device for aero-engine maintenance

Abstract

The utility model discloses a kind of quick-release equipment for aero-engine maintenance, including fixing frame and first sliding chute plate, the first sliding chute plate is slidably arranged in the inside of fixing frame, tensioning plate is slidably arranged in the both sides of the first sliding chute plate inner chamber, the utility model relates to aero-engine technical field.The quick-release equipment for aero-engine maintenance, by setting inclined block between tensioning plate and L type clamping plate, so that adjacent two L type clamping plates can be extruded and tensioned cooperation by tensioning plate and inclined block, promote two L type clamping plates can be conveniently clamped and pulled out for spline shaft, simplify dismounting procedure, improve dismounting efficiency, and set spacing adjusting mechanism between two tensioning plates, so that the clamping range between two L type clamping plates can be conveniently adjusted, to quickly adapt to different specifications batch spline shaft dismounting.

Description

Technical Field

[0001] This utility model relates to the field of aero-engine technology, specifically to a quick-release device for aero-engine maintenance. Background Technology

[0002] Aircraft engines undergo maintenance and repair after a certain period of use. During maintenance and repair, various components are disassembled. The nozzle fuel pump is one such component. During the assembly and disassembly of the nozzle fuel pump, it is necessary to separate the spline shaft from its housing. Because the two are assembled with an interference fit, and after a certain lifespan, the presence of sludge and other substances makes the spline shaft extremely difficult to disassemble. Usually, extended pliers are used to clamp the spline shaft, while one person holds the housing and another person pulls it out with force.

[0003] This method of disassembly has the following disadvantages: for example, when using extended pliers to clamp, the clamping force is insufficient, and because the longitudinal pulling force required is large, the extended pliers are prone to suddenly falling off. This not only makes it impossible to guarantee the quality of the parts, but also poses a great risk to the safety of personnel.

[0004] To avoid the aforementioned problems, CN217620372U discloses a spline shaft disassembly device for an aero-engine accessory. The device includes a disassembly unit and an aero-engine accessory. The surface of the aero-engine accessory is provided with a spline shaft. The disassembly unit includes a bracket, a pull-out assembly, a fixing assembly, an anti-detachment assembly, and a support assembly. The pull-out assembly includes a threaded sleeve, which is fixedly mounted on the top of the bracket. A threaded rod is screwed into the inside of the threaded sleeve. In this aero-engine accessory spline shaft disassembly device, rotating a knob drives a double-acting screw to rotate. The double-acting screw, through its own rotation, drives a threaded block to slide through a limiting slider in a limiting groove, causing a fixing plate to move. The fixing plate, by driving an anti-slip plate, fixes the spline shaft. Then, activating an electric push rod moves a connecting plate outward, which in turn moves a stop wheel outward, abutting against the inner wall of the bracket. This further secures the spline shaft via the fixing plate, preventing the fixing plate from detaching from the spline shaft.

[0005] While the above methods can disassemble splined shafts, the disassembly process inevitably involves many steps and the various actions are not tightly connected, making it inconvenient to quickly disassemble splined shafts of the same specifications. To avoid such problems, a quick-release device for aircraft engine maintenance is proposed to solve the existing problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this utility model provides a quick-release device for aircraft engine maintenance, which solves the problem that traditional disassembly devices are inconvenient for quick disassembly of splined shafts of the same specifications.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick-release device for aircraft engine maintenance, comprising a fixed frame and a first sliding plate. The first sliding plate is slidably disposed inside the fixed frame. A lifting mechanism is provided between the first sliding plate and the fixed frame. Tensioning plates are slidably disposed on both sides of the inner cavity of the first sliding plate. A spacing adjustment mechanism matching the tensioning plates is provided at the bottom of the first sliding plate. A sliding frame is slidably disposed at the bottom of the first sliding plate. A second sliding plate is slidably connected to both sides of the inner cavity of the sliding frame. An L-shaped clamping plate is slidably connected inside the second sliding plate. A first spring is fixedly connected between the L-shaped clamping plate and the second sliding plate. An inclined block matching the tensioning plate is fixedly connected to one side of the L-shaped clamping plate. A sliding sleeve that is slidably adapted to the tensioning plate is fixedly connected to one side of the second sliding plate.

[0008] Preferably, vertical sliding grooves are provided on both sides of the inner cavity of the fixing frame, and vertical sliders are slidably connected inside the vertical sliding grooves. The opposite sides of the two vertical sliders are respectively fixedly connected to the two sides of the sliding frame, and a second spring is fixedly connected between the vertical sliders and the vertical sliding grooves.

[0009] Preferably, the spacing adjustment mechanism includes a bidirectional threaded rod, which is rotatably mounted on the bottom of the first sliding plate via a bearing bracket, and the side of the tensioning plate is provided with a threaded groove that is threadedly adapted to the bidirectional threaded rod.

[0010] Preferably, the lifting mechanism includes a threaded sleeve, which is fixedly disposed inside the fixed frame. The threaded sleeve is threadedly connected to a threaded rod, and the bottom end of the threaded rod is rotatably connected to the top of the first slide plate through a bearing.

[0011] Preferably, guide rails are provided on both the front and rear sides of the inner cavity of the slide frame, and guide rail sliders are slidably connected inside the guide rails. The guide rail sliders on the same side are fixedly connected to the surface of the second slide plate.

[0012] Preferably, guide sliding holes are provided on both sides of the top of the fixed frame, and guide sliding columns that slide and adapt to the guide sliding holes are fixedly connected to both sides of the top of the first sliding plate. Beneficial effects

[0013] This invention provides a quick-release device for aircraft engine maintenance. Compared with existing technologies, it has the following advantages: By setting an inclined block between the tension plate and the L-shaped clamping plate, the two adjacent L-shaped clamping plates can be clamped and pulled together by the compression of the tension plate and the inclined block, making it easier to clamp and pull out the spline shaft, simplifying the disassembly process and improving disassembly efficiency. Furthermore, a spacing adjustment mechanism is set between the two tension plates, so that the clamping range between the two L-shaped clamping plates can be easily adjusted to quickly adapt to the disassembly of spline shafts of different specifications in batches. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0015] Figure 2 This is a sectional view of the fixing frame structure of this utility model;

[0016] Figure 3 This is a top view of the internal structure of the sliding frame of this utility model.

[0017] In the diagram: 1. Fixed frame; 2. First slide rail plate; 3. Pulling mechanism; 31. Threaded sleeve; 32. Threaded rod; 4. Tensioning plate; 5. Spacing adjustment mechanism; 51. Bidirectional threaded rod; 52. Threaded groove; 6. Slide frame; 7. Second slide rail plate; 8. L-shaped clamping plate; 9. First spring; 10. Inclined block; 11. Slide sleeve; 12. Vertical slide rail; 13. Vertical slider; 14. Second spring; 15. Guide rail; 16. Guide rail slider; 17. Guide slide hole; 18. Guide slide column. Detailed Implementation

[0018] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a quick-release device for aircraft engine maintenance, including a fixed frame 1 and a first sliding plate 2. The first sliding plate 2 is slidably disposed inside the fixed frame 1. A lifting mechanism 3 is provided between the first sliding plate 2 and the fixed frame 1. The lifting mechanism 3 includes a threaded sleeve 31, which is fixedly disposed inside the fixed frame 1. A threaded rod 32 is threadedly connected inside the threaded sleeve 31, and the bottom end of the threaded rod 32 is rotatably connected to the top of the first sliding plate 2 through a bearing. Guide sliding holes 17 are provided on both sides of the top of the fixed frame 1, and guide sliding columns 18 that are slidably adapted to the guide sliding holes 17 are fixedly connected on both sides of the top of the first sliding plate 2.

[0020] Furthermore: To facilitate quick disassembly of the spline shaft, tension plates 4 are slidably arranged on both sides of the inner cavity of the first slide plate 2. A spacing adjustment mechanism 5, matching the tension plates 4, is provided at the bottom of the first slide plate 2. The spacing adjustment mechanism 5 includes a bidirectional threaded rod 51, which is rotatably mounted on the bottom of the first slide plate 2 via a bearing bracket. A threaded groove 52, matching the thread of the bidirectional threaded rod 51, is provided on the side of the tension plate 4. A sliding frame 6 is slidably arranged at the bottom of the first slide plate 2. Second slide plates 7 are slidably connected to both sides of the inner cavity of the sliding frame 6. Guide rails 15 are provided on both the front and rear sides. Guide rail sliders 16 are slidably connected inside the guide rails 15. The guide rail sliders 16 on the same side are fixedly connected to the surface of the second slide plate 7. An L-shaped clamping plate 8 is slidably connected inside the second slide plate 7. A first spring 9 is fixedly connected between the L-shaped clamping plate 8 and the second slide plate 7. An inclined block 10 that is used in conjunction with the tensioning plate 4 is fixedly connected to one side of the L-shaped clamping plate 8. A sliding sleeve 11 that is slidably adapted to the tensioning plate 4 is fixedly connected to one side of the second slide plate 7. As explained in detail, the clamping surface of the L-shaped clamping plate 8 is provided with a rubber pad.

[0021] As a detailed explanation: Vertical grooves 12 are provided on both sides of the inner cavity of the fixing frame 1. Vertical sliders 13 are slidably connected inside the vertical grooves 12, and the opposite sides of the two vertical sliders 13 are fixedly connected to the two sides of the slide frame 6 respectively. A second spring 14 is fixedly connected between the vertical sliders 13 and the vertical grooves 12. As a detailed explanation: The second spring 14 is a high-strength alloy spring, and the strength of the second spring 14 is greater than that of the first spring 9.

[0022] In use, adjust the clamping distance between the two L-shaped clamping plates 8 according to the actual size of the spline shaft, so that the unit clamping distance between them is slightly larger than that of the spline shaft. When adjusting, use the handwheel to rotate the double-threaded rod 51, causing the tension plates 4 connected to the threads on both sides of the surface of the double-threaded rod 51 to move synchronously in the same direction or in opposite directions to adjust the distance. After the adjustment is correct, then put the bottom of the fixing bracket 1 tightly against the outer surface of the engine accessory, and cover the two L-shaped clamping plates 8 on both sides of the spline shaft. Then screw the threaded rod 32, causing the threaded rod 32 to drive the first sliding plate 2 and the tension plate 4 to rise. The rising tension plate 4 presses the inclined block 10 laterally, causing the inclined block 10 to drive the L-shaped clamping plates 8 to fit against the surface of the spline shaft. Through the fit of the two L-shaped clamping plates 8 and the rising tension plate 4, the spline shaft is pulled out.

Claims

1. A quick-release device for aircraft engine maintenance, comprising a mounting bracket (1) and a first sliding plate (2), wherein the first sliding plate (2) is slidably disposed inside the mounting bracket (1), characterized in that: A lifting mechanism (3) is provided between the first slide plate (2) and the fixed frame (1). A tensioning plate (4) is slidably provided on both sides of the inner cavity of the first slide plate (2). A spacing adjustment mechanism (5) matching the tensioning plate (4) is provided at the bottom of the first slide plate (2). A sliding frame (6) is slidably provided at the bottom of the first slide plate (2). A second slide plate (7) is slidably connected on both sides of the inner cavity of the sliding frame (6). An L-shaped clamping plate (8) is slidably connected inside the second slide plate (7). A first spring (9) is fixedly connected between the L-shaped clamping plate (8) and the second slide plate (7). An inclined block (10) matching the tensioning plate (4) is fixedly connected on one side of the L-shaped clamping plate (8). A sliding sleeve (11) matching the tensioning plate (4) is fixedly connected on one side of the second slide plate (7).

2. The quick-release device for aircraft engine maintenance according to claim 1, characterized in that: The inner cavity of the fixed frame (1) is provided with vertical sliding grooves (12) on both sides. Vertical sliders (13) are slidably connected inside the vertical sliding grooves (12). The opposite sides of the two vertical sliders (13) are fixedly connected to the two sides of the sliding frame (6). A second spring (14) is fixedly connected between the vertical sliders (13) and the vertical sliding grooves (12).

3. The quick-release device for aircraft engine maintenance according to claim 1, characterized in that: The spacing adjustment mechanism (5) includes a bidirectional threaded rod (51), which is rotatably mounted on the bottom of the first slide plate (2) via a bearing bracket. The side of the tensioning plate (4) is provided with a threaded groove (52) that is threaded to match the bidirectional threaded rod (51).

4. The quick-release device for aircraft engine maintenance according to claim 1, characterized in that: The lifting mechanism (3) includes a threaded sleeve (31), which is fixedly installed inside the fixed frame (1). The threaded sleeve (31) is threadedly connected to a threaded rod (32), and the bottom end of the threaded rod (32) is rotatably connected to the top of the first slide plate (2) through a bearing.

5. The quick-release device for aircraft engine maintenance according to claim 1, characterized in that: Guide rails (15) are provided on both the front and rear sides of the inner cavity of the slide frame (6). A guide rail slider (16) is slidably connected inside the guide rail (15). The guide rail slider (16) on the same side is fixedly connected to the surface of the second slide plate (7).

6. The quick-release device for aircraft engine maintenance according to claim 1, characterized in that: The top of the fixed frame (1) is provided with guide sliding holes (17) on both sides, and the top of the first sliding plate (2) is fixedly connected with guide sliding columns (18) that are adapted to slide in the guide sliding holes (17).

Images