An aircraft horizontal tail rudder model for positioning and washing
By designing a model of the aircraft horizontal tail servo for positioning and cleaning, the problem of precision in adjusting the deformation of the conduits in the hydraulic system and in the cleaning process was solved, achieving more efficient installation and cleaning results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU STATE-OWNED FACTORY OF MACHINING
- Filing Date
- 2025-09-04
- Publication Date
- 2026-08-04
AI Technical Summary
In aircraft hydraulic systems, it is difficult to achieve precise matching between the installation of horizontal tail servos and the deformation adjustment of hydraulic conduits. Furthermore, the deformation of conduits during cleaning affects installation accuracy, posing safety hazards and operational difficulties.
Design a model of an aircraft horizontal tail servo for positioning and cleaning, including a housing, an oil inlet connector, an oil return connector, and a pressure output connector. It is fixed to the aircraft structure by bolts and connected to the process conduit to form a circulation cleaning path, replacing the process hose for hydraulic system cleaning.
It reduces operational difficulty, decreases workload, improves the accuracy of hydraulic system conduit installation and cleaning efficiency, and reduces safety hazards.
Smart Images

Figure CN224592486U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aircraft maintenance technology, specifically a horizontal tail servo model for positioning and cleaning. Background Technology
[0002] The aircraft hydraulic system is a crucial component, providing energy and pressure to the control surfaces. The horizontal tail servo is an essential component for maneuvering and controlling the horizontal tail; one servo is located on each side, installed inside the left and right tail booms respectively. The horizontal tail servo connects to the hydraulic system's supply and return lines, as well as to the lines that output control pressure.
[0003] To ensure the safe use of the hydraulic system, the installation requirements for hydraulic conduits are extremely strict. Since some deformation is unavoidable during the manufacturing and repair of the conduits, the shape needs to be readjusted to match the mounting joint of the horizontal tail servo during the installation process after repair.
[0004] Due to the limited internal space of the tail boom and the fact that the hydraulic guides are made of steel and are not easily bent, the shape of the guides cannot be adjusted on-board after the horizontal tail servo is installed. A trial installation is required, followed by removal of the horizontal tail servo to adjust the guide shape before reinstalling the servo for confirmation. Because the horizontal tail servo is heavy and large, repeated disassembly and reassembly are inconvenient and pose certain safety hazards.
[0005] Meanwhile, during aircraft repair, the hydraulic system requires a high level of cleanliness. Before installing functional accessories, process hoses are typically used to connect the onboard conduits in series for circulating cleaning. Only after the oil contamination level is within acceptable limits can the product be installed. During the installation and removal of process hoses, because the end of the onboard conduit connected to the product is suspended in the air without a rigid fixing point, some deformation of the onboard conduit is inevitable, affecting the accuracy of subsequent installation. Utility Model Content
[0006] To address the aforementioned problems, this invention proposes a horizontal tail servo model for positioning and cleaning of an aircraft.
[0007] A model of a horizontal tail servo for positioning and cleaning an aircraft includes a housing, an oil inlet connector and an oil return connector fixed to the upper surface of the housing by bolts and nuts, several sets of pressure output connectors and pressure output connector 2 fixed to the front of the housing by locking nuts, and elbow connectors connected to the corresponding pressure output connectors 1 and 2.
[0008] Furthermore, the housing is a hollow frame structure, and its external dimensions are consistent with those of the horizontal tail servo.
[0009] Furthermore, the housing is fixed to the aircraft structure by several sets of bolts.
[0010] Furthermore, the oil inlet connector is connected and installed with the oil inlet pipe nozzle on the aircraft.
[0011] Furthermore, the oil return connector is connected and installed with the oil return pipe nozzle on the aircraft.
[0012] Furthermore, the return oil connector is connected to process conduit two, the inlet oil connector is connected to process conduit one, the two sets of pressure output connectors one are connected through process conduit four, and the two sets of pressure output connectors two are connected to process conduit three.
[0013] The beneficial effects of this utility model are:
[0014] This utility model replaces the horizontal tail servo for the inspection and positioning of the hydraulic pipeline system, reducing the difficulty of operation, reducing the workload, and improving work efficiency; at the same time, the process conduit connects the oil inlet connector, oil return connector and pressure output connector respectively to form a passage, which can be used for hydraulic system circulation cleaning, reducing the impact of process hose disassembly and assembly on the on-board pipeline, and improving the installation accuracy of hydraulic system conduit. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 2 This is a front view of the present invention;
[0018] Figure 3 This is a top view of the present invention;
[0019] Figure 4 This is a rear side view of the present invention.
[0020] Figure label:
[0021] 1. Shell; 2. Process conduit one; 3. Oil return connector; 4. Oil inlet connector; 5. Bolt; 6. Nut; 7. Pressure output connector one; 8. Locking nut; 9. Bend connector; 10. Process conduit two; 11. Process conduit three; 12. Pressure output connector two; 13. Process conduit four. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.
[0023] like Figures 1 to 4As shown, an aircraft horizontal tail servo model for positioning and cleaning includes a housing 1, an oil inlet connector 4 and an oil return connector 3 fixed to the upper surface of the housing 1 by bolts 5 and nuts 6, several sets of pressure output connectors 1-7 and 2-12 fixed to the front of the housing 1 by locking nuts 8, and elbow connectors 9 connected to the corresponding pressure output connectors 1-7 and 2-12.
[0024] like Figure 1 and Figure 2 As shown, the housing 1 is a hollow frame structure, and its external dimensions are consistent with those of the horizontal tail servo motor, which is used for external positioning.
[0025] Both pressure output connector 17 and pressure output connector 212 are fixed to the front of housing 1 by locking nut 8 for positioning pressure control conduits on the aircraft.
[0026] The housing 1 is fixed to the aircraft structure by four sets of bolts.
[0027] The oil inlet connector 4 is connected to the oil inlet pipe connector on the aircraft, and the oil return connector 3 is connected to the oil return pipe connector on the aircraft for positioning the oil inlet and oil return pipes on the aircraft.
[0028] like Figure 1 and Figure 4 As shown, the return oil connector 3 of this utility model is connected to the second process conduit 10, the inlet oil connector 4 is connected to the first process conduit 2, the two sets of pressure output connectors 7 are connected through the fourth process conduit 13, and the two sets of pressure output connectors 12 are connected to the third process conduit 11. This is used for the circulation cleaning of hydraulic system conduits on the aircraft, thereby replacing the process hoses directly used for cleaning hydraulic system pipelines, reducing the workload of disassembly and assembly, reducing the impact of the process hose disassembly and assembly process on the aircraft conduits, and improving the installation accuracy of the aircraft pipelines.
[0029] Several sets of pressure output connector 17 and pressure output connector 212 are connected to several sets of pressure control conduits on the aircraft.
[0030] The method of using this utility model is as follows:
[0031] 1. The horizontal tail servo model is mounted and fixed to the fuselage structure using bolts through the four bolt mounting holes on the housing 1;
[0032] 2. Connect the inlet oil pipe nozzle to the inlet connector 4 and the return oil pipe nozzle to the return connector 3. Connect the return connector 3 to the process conduit 2 10. Connect the inlet oil connector 4 to the process conduit 1 2. Connect the two sets of pressure output connectors 1 7 through the process conduit 4 13. Connect the two sets of pressure output connectors 2 12 to the process conduit 3 11 to ensure installation accuracy.
[0033] 3. The horizontal tail servo model and the onboard hydraulic system conduits are cleaned together in a circulating manner;
[0034] 4. After the hydraulic system cleaning is completed, disconnect the connection between the onboard conduit and the horizontal tail servo model, and disassemble the horizontal tail servo model from the aircraft.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A model of an aircraft horizontal tail servo for positioning and cleaning, characterized in that: Includes housing (1), and also includes an oil inlet connector (4) and an oil return connector (3) fixed to the upper surface of housing (1), several sets of pressure output connectors 1 (7) and 2 (12) fixed to the front of housing (1) by locking nuts (8), and elbow connectors (9) connected to the corresponding pressure output connectors 1 (7) and 2 (12).
2. The aircraft horizontal tail servo model for positioning and cleaning according to claim 1, characterized in that: The housing (1) is a hollow frame structure, and its external dimensions are consistent with those of the horizontal tail servo.
3. The aircraft horizontal tail servo model for positioning and cleaning according to claim 1, characterized in that: The shell (1) is fixed to the aircraft structure by several sets of bolts.
4. The aircraft horizontal tail servo model for positioning and cleaning according to claim 1, characterized in that: The oil inlet connector (4) is connected to the oil inlet pipe nozzle on the aircraft.
5. The aircraft horizontal tail servo model for positioning and cleaning according to claim 1, characterized in that: The oil return connector (3) is connected to the oil return pipe nozzle on the aircraft.
6. The aircraft horizontal tail servo model for positioning and cleaning according to claim 1, characterized in that: The return oil connector (3) is connected to the second process conduit (10), the inlet oil connector (4) is connected to the first process conduit (2), the two sets of pressure output connectors (7) are connected through the fourth process conduit (13), and the two sets of pressure output connectors (2) are connected to the third process conduit (11).
7. The aircraft horizontal tail servo model for positioning and cleaning according to claim 1, characterized in that: The oil inlet connector (4) and the oil return connector (3) are both fixed to the upper surface of the housing (1) by means of bolts (5) and nuts (6).