Disassembling tool for fuel nozzle outer cover

Abstract

The utility model discloses a disassembling tool for a fuel nozzle outer cover, which comprises a support, a mounting seat used for fixing a nozzle mounting edge is arranged on the support, a main body cavity used for placing a nozzle main body is arranged in the mounting seat, a pinch bar is arranged above the mounting seat, and a hinge seat fixed on the support is hinged to the middle of the pinch bar. The end of the pinch bar is connected with a lifting rod, and the end, away from the pinch bar, of the lifting rod is connected with stretching-in rods used for stretching into symmetrical holes in a nozzle outer cover. A mounting groove for allowing the nozzle mounting edge to enter is formed in the middle of the side wall of the mounting seat. A connecting rod is fixedly connected to the end, away from the ripping bar, of the lifting rod, swing rods are symmetrically hinged to the connecting rod with the lifting rod as the boundary, and the stretching-in rod is arranged on the side, facing the lifting rod, of each swing rod. The nozzle outer cover can be separated from the nozzle main body, so that the nozzle is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of nozzle disassembly tooling technology, specifically to a disassembly tooling for a fuel nozzle cover. Background Technology

[0002] The fuel nozzle of an aircraft engine is a core component of the combustion system, and its technological development has a profound impact on engine performance, fuel efficiency, and emission control.

[0003] Currently, domestic aero-engines are repaired using a scheduled maintenance method. After the set time, the engine returns to the repair shop for repairs, during which the fuel nozzles are also returned for a major overhaul. This overhaul involves the complete disassembly of the fuel nozzles, which consist of a nozzle body, a nozzle mounting edge, and a nozzle cover. The nozzle body and nozzle cover are located on opposite sides of the nozzle mounting edge. The nozzle cover has two symmetrical holes, and the nozzle rod is located inside the nozzle cover. The nozzle cover is fixed to the nozzle body by a retaining ring and positioned with pins. How to reliably detach the nozzle cover from the nozzle body has always been a major challenge for maintenance personnel. Utility Model Content

[0004] The purpose of this invention is to provide a disassembly tool for a fuel nozzle cover, which can separate the nozzle cover from the nozzle body and is easy to use.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0006] A disassembly tooling for a fuel nozzle cover includes a bracket with a mounting seat for fixing the nozzle mounting edge. The mounting seat has a main body cavity for placing the nozzle body. A pry bar is located above the mounting seat, with a hinged joint fixed to the bracket at its middle. A lifting rod is connected to the end of the pry bar, and an insertion rod is connected to the end of the lifting rod away from the pry bar for extending into symmetrical holes on the nozzle cover. Its function is to fix the nozzle cover by the insertion rod; and to use leverage by employing the hinged joint, pry bar, and lifting rod to lift the nozzle cover from the nozzle mounting edge, separating the nozzle cover from the nozzle mounting edge, making it convenient to use.

[0007] Furthermore, the mounting base has a mounting groove in the middle of its side wall for the nozzle mounting edge to enter. This groove secures the nozzle mounting edge, preventing it from flipping over when the nozzle cover is pried off.

[0008] The lifting rod is located directly above the mounting groove, and the hinge seat is located to the side of the lifting rod. Its function is to position the fulcrum above and to the side of the nozzle mounting edge, making it easier to apply force with the pry bar.

[0009] Furthermore, a connecting rod is fixedly connected to the end of the lifting rod away from the pry bar. A swing rod is symmetrically hinged to the connecting rod with the lifting rod as the boundary. The extension rod is located on the side of the swing rod facing the lifting rod. Its function is that, through the arrangement of the connecting rod and the swing rod, the extension rod can be moved in and out of the symmetrical hole by swinging the swing rod around the hinge axis.

[0010] Furthermore, the outer diameter of the extension rod is smaller than the inner diameter of the symmetrical hole on the fuel nozzle. This design facilitates the extension rod's movement in and out of the symmetrical hole.

[0011] Furthermore, the extension rod and the connecting rod are connected by a hinge shaft. The distance between the end face of the extension rod away from the connecting rod and the corresponding hinge shaft gradually decreases as the hinge shaft moves away from the swing rod. This design prevents the extension rod from colliding with the lower edge of the symmetrical hole when it enters the symmetrical hole.

[0012] Furthermore, the bracket is provided with a bottom plate and a top plate from bottom to top, and the bottom plate and the top plate are connected by a side plate. The mounting seat is located on the top surface of the bottom plate, and the hinge seat is located on the top surface of the top plate.

[0013] Furthermore, the hinge seat is bolted to the top surface of the top plate.

[0014] Furthermore, the pry bar includes a force-receiving section and a force-transmitting section, the force-transmitting section being hinged to the lifting rod, and the hinge seat being located at the junction of the force-receiving section and the force-transmitting section.

[0015] Furthermore, the angle between the force-receiving section and the force-transmitting section is greater than 90°, and the hinge seat is located on the pry bar facing away from the inner angle between the force-receiving section and the force-transmitting section. Its function is to facilitate lifting the lifting rod by pressing the force-receiving section from top to bottom through the spatial relationship design of the force-receiving section, the force-transmitting section, and the hinge seat.

[0016] The beneficial effects of this utility model are:

[0017] 1. The nozzle cover can be fixed by the extension rod; the nozzle cover can be lifted from the nozzle mounting edge by lever principle through the hinge seat, pry bar and lifting rod, so that the nozzle cover can be separated from the nozzle mounting edge, which is convenient to use.

[0018] 2. The installation groove can be used to fix the nozzle mounting edge, preventing the nozzle mounting edge from flipping when the nozzle cover is pried off from the nozzle mounting edge. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of Example 1 with a fuel injector installed;

[0020] Figure 2This is a schematic diagram of the main structure of Example 1.

[0021] Reference numerals: 1. Bracket; 2. Mounting base; 3. Main body cavity; 4. Pry bar; 5. Hinge seat; 6. Lifting rod; 7. Insertion rod; 8. Mounting groove; 9. Connecting rod; 10. Swing rod; 11. Base plate; 12. Top plate; 13. Side plate; 14. Force-bearing section; 15. Force-transmitting section; 16. Nozzle body; 17. Nozzle mounting edge; 18. Nozzle outer cover; 19. Symmetrical hole; 20. Hinge shaft. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1

[0026] A disassembly tooling for fuel nozzle covers, such as Figure 1 As shown, the device includes a bracket with a mounting seat for fixing the nozzle mounting edge. The mounting seat contains a main cavity for placing the nozzle body. A pry bar is located above the mounting seat, with a hinged joint fixed to the bracket at its middle. A lifting rod is connected to the end of the pry bar, and an insertion rod is connected to the end of the lifting rod away from the pry bar for extending into symmetrical holes on the nozzle cover. Its function is to secure the nozzle cover by the insertion rod; and to use leverage by employing the hinged joint, pry bar, and lifting rod to lift the nozzle cover from the nozzle mounting edge, separating the nozzle cover from the nozzle mounting edge, thus facilitating use.

[0027] Specifically, such as Figure 1 As shown, the mounting base has a mounting groove in the middle of its side wall for the nozzle mounting edge to enter. Its function is to secure the nozzle mounting edge by providing the mounting groove, preventing it from flipping over when the nozzle cover is pried off from the mounting edge.

[0028] Specifically, such as Figure 1 As shown, the lifting rod is located directly above the mounting groove, and the hinge seat is located to the side of the lifting rod. Its function is to position the hinge seat so that the fulcrum is located above and to the side of the nozzle mounting edge, facilitating the application of force by the pry bar.

[0029] Specifically, such as Figure 1 As shown, a connecting rod is fixedly connected to the end of the lifting rod away from the pry bar. A swing rod is symmetrically hinged to the connecting rod with the lifting rod as the boundary. The extension rod is located on the side of the swing rod facing the lifting rod. Its function is that, by setting up the connecting rod and the swing rod, the extension rod can be moved in and out of the symmetrical hole by swinging the swing rod around the hinge axis.

[0030] Specifically, such as Figure 1 As shown, the outer diameter of the extension rod is smaller than the inner diameter of the symmetrical holes on the fuel nozzle. Its function is to facilitate the extension rod's movement in and out of the symmetrical holes by designing its outer diameter.

[0031] Specifically, such as Figure 2 As shown, the extension rod and the connecting rod are connected by a hinge shaft. The distance between the end face of the extension rod away from the connecting rod and the corresponding hinge shaft gradually decreases as the hinge shaft moves away from the swing rod. Its function is to prevent the extension rod from colliding with the lower edge of the symmetrical hole when entering it, through the design of the extension rod's shape.

[0032] Specifically, such as Figure 1 As shown, the bracket has a bottom plate and a top plate arranged sequentially from bottom to top. The bottom plate and the top plate are connected by a side plate. The mounting seat is located on the top surface of the bottom plate, and the hinge seat is located on the top surface of the top plate.

[0033] Specifically, such as Figure 1 As shown, the hinge seat is bolted to the top surface of the top plate.

[0034] Specifically, such as Figure 1 As shown, the pry bar includes a force-receiving section and a force-transmitting section. The force-transmitting section is hinged to the lifting rod, and the hinge seat is located at the junction of the force-receiving section and the force-transmitting section.

[0035] Specifically, such as Figure 1As shown, the angle between the force-receiving section and the force-transmitting section is greater than 90°, and the hinge seat is located on the pry bar facing away from the inner angle between the force-receiving section and the force-transmitting section. Its function is to facilitate lifting the lifting rod by pressing the force-receiving section from top to bottom through the spatial relationship design of the force-receiving section, the force-transmitting section, and the hinge seat.

[0036] The working principle of this embodiment is explained as follows: First, the fuel nozzle is fixed on the mounting base, so that the nozzle mounting edge extends from the side wall of the mounting base into the mounting groove, so that the nozzle body is located in the main body cavity, and the nozzle cover is located directly above the nozzle mounting edge. Then, the swing rod is swung downward, so that the extension rod extends into the symmetrical hole, and the top of the extension rod is horizontal when it is in the symmetrical hole. Then, the force section is pressed downward, so that the force transmission section is raised. The force transmission section drives the lifting rod to move upward, and the lifting rod drives the extension rod to move the nozzle cover upward. Combined with the fixing of the nozzle mounting edge by the mounting groove, the nozzle cover is separated from the nozzle mounting edge.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A disassembly tooling for a fuel nozzle cover, characterized in that: Includes a bracket (1), on which a mounting seat (2) for fixing the nozzle mounting edge is provided, and a main body cavity (3) for placing the nozzle body is provided inside the mounting seat (2). A pry bar (4) is provided above the mounting seat (2), and a hinge seat (5) fixed on the bracket (1) is hinged to the middle of the pry bar (4). A lifting rod (6) is connected to the end of the pry bar (4), and an extension rod (7) for extending into the symmetrical holes on the nozzle cover is connected to the end of the lifting rod (6) away from the pry bar (4).

2. The disassembly tooling for a fuel nozzle cover according to claim 1, characterized in that: The mounting base (2) has a mounting groove (8) in the middle of its side wall for the nozzle mounting edge to enter.

3. The disassembly tooling for a fuel nozzle cover according to claim 2, characterized in that: The lifting rod (6) is located directly above the mounting groove (8), and the hinge seat (5) is located to the side of the lifting rod (6).

4. The disassembly tooling for a fuel nozzle cover according to claim 1, characterized in that: The lifting rod (6) is fixedly connected to a connecting rod (9) at the end away from the pry bar (4). The connecting rod (9) is symmetrically hinged to a swing rod (10) with the lifting rod (6) as the boundary. The extension rod (7) is located on the side of the swing rod (10) facing the lifting rod (6).

5. A disassembly tooling for a fuel nozzle cover according to claim 4, characterized in that: The outer diameter of the extension rod (7) is smaller than the inner diameter of the symmetrical hole on the fuel nozzle.

6. The disassembly tooling for a fuel nozzle cover according to claim 5, characterized in that: The extension rod (7) and the connecting rod (9) are connected by a hinge shaft (20). The distance between the end face of the extension rod (7) away from the connecting rod (9) and the corresponding hinge shaft (20) gradually decreases as the hinge shaft (20) moves away from the swing rod (10).

7. The disassembly tooling for a fuel nozzle cover according to claim 1, characterized in that: The bracket (1) is provided with a bottom plate (11) and a top plate (12) from bottom to top. The bottom plate (11) and the top plate (12) are connected by a side plate (13). The mounting seat (2) is located on the top surface of the bottom plate (11), and the hinge seat (5) is located on the top surface of the top plate (12).

8. A disassembly tooling for a fuel nozzle cover according to claim 7, characterized in that: The hinge seat (5) is bolted to the top surface of the top plate (12).

9. A disassembly tooling for a fuel nozzle cover according to claim 8, characterized in that: The pry bar (4) includes a force-bearing section (14) and a force-transmitting section (15). The force-transmitting section (15) is hinged to the lifting rod (6), and the hinge seat (5) is located at the junction of the force-bearing section (14) and the force-transmitting section (15).

10. A disassembly tooling for a fuel nozzle cover according to claim 9, characterized in that: The angle between the force-receiving section (14) and the force-transmitting section (15) is greater than 90°, and the hinge seat (5) is located on the pry bar (4) facing away from the inner angle between the force-receiving section (14) and the force-transmitting section (15).

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