Special tool for disassembling aircraft buffer valve
By designing a modular tooling system that combines a steel limiter and a T-handle, the problems of shell damage and operational difficulty during the disassembly of the buffer valve were solved, achieving a safe and rapid disassembly process and reducing maintenance costs.
Patent Information
- Application Number
- CN202422882464.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In the existing technology, the disassembly process of the buffer valve has problems such as shell damage, high operation difficulty and high cost. In particular, the disassembly of aluminum screw plugs is difficult to control in terms of force and safety.
A combined tooling consisting of a fixed base, a limiter, and a T-handle was designed. Utilizing the strength of steel, the combination of the limiter and the fixed base ensures the stable installation of the buffer valve. Furthermore, the T-handle distributes force evenly to decompose the screw plug, avoiding damage and improving operational efficiency.
It enables safe and rapid disassembly of the buffer valve, reduces the risk of damage and operational difficulty, improves disassembly efficiency and repair quality, and saves maintenance costs.
Smart Images
Figure CN223493131U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aviation equipment technology and relates to a special tooling for disassembling aircraft buffer valves. Background Technology
[0002] The buffer valve mainly consists of a housing 5, filter pad, pad block, flow restrictor, aluminum washer, screw plug 6, cover 4, etc. (e.g.) Figure 1 The pressure relay, installed on a certain type of aircraft, is used to reduce the pressure of the hydraulic system. This prevents the pressure relay from automatically switching on or off the circuits of the indicator lights and emergency oil pump too quickly when the pressure rises or falls too rapidly, which could cause short circuits or other problems and adversely affect flight.
[0003] Due to the factory's maintenance needs, the demand for aircraft equipped with buffer valves is high, resulting in a heavy annual maintenance workload for these valves. The screw plug 6 and housing 5 within the buffer valve are both made of aluminum, which has low hardness. Disassembly is inconvenient without specialized tooling and is prone to damage, posing potential quality risks. Therefore, specialized tooling is urgently needed to meet the disassembly requirements of the buffer valves.
[0004] The existing disassembly method involves fixing the buffer valve housing 5 to a vise, with the operator using a flathead screwdriver to disassemble the plug 6. This method has the following drawbacks: direct clamping with the vise may damage the buffer valve housing 5; the flathead screwdriver is used to rotate the plug 6 during disassembly, but the plug 6 in the buffer valve is made of aluminum, which has low hardness, making it difficult to control the force manually, and uneven force during operation can affect the quality of plug 6 disassembly; furthermore, the buffer valve plug 6 has three safety points at the junction with the housing 5, requiring significant torque during disassembly, making disassembly difficult with ordinary screwdrivers and time-consuming; the buffer valve plug 6 is an aerospace product, and if damaged during disassembly, procurement is difficult and the quality cost is high. Utility Model Content
[0005] In view of this, the present invention provides a special tooling for disassembling aircraft buffer valves, which can conveniently and quickly disassemble various buffer valves, improve disassembly efficiency, improve repair quality, and save repair costs.
[0006] The specific technical solution of this utility model is as follows:
[0007] A special tooling for disassembling an aircraft buffer valve, wherein the special tooling is an assembly including a fixed base 1, a limiter 2, and a T-shaped handle 3.
[0008] The limiter 2 is a cylindrical structure with one open end and one closed end. The closed end has a threaded through hole in the center. The limiter 2 has a stepped inner hole inside. The outer large diameter section of the stepped inner hole has an internal thread, and the inner small diameter section is a hexagonal inner hole. The buffer valve plug 6 is inserted into the limiter 2 with one side facing inward. The cover 4 fits with the hexagonal inner hole to prevent the buffer valve from rotating relative to the limiter 2.
[0009] The fixed seat 1 is a stepped shaft. Its second section has the largest outer diameter and is threaded. The first section is a hand-held section. The third section has a groove. The outer diameter of the groove is set according to the head of the buffer valve housing 5. One side of the third section of the fixed seat 1 extends into the limiter 2. The second section is threaded with the large diameter section of the stepped inner hole of the limiter 2, so that the end face of the third section fits against the shoulder of the buffer valve housing 5, pressing the buffer valve tightly in the fixed seat 1.
[0010] The T-handle 3 is provided with external threads, and its end is shaped as a flat-blade. The T-handle 3 is screwed into the limiter 2 with the threaded through hole at the closed end. The flat-blade at its end is connected to the buffer valve plug 6. Twisting the T-handle 3 disassembles the plug 6.
[0011] Furthermore, the fixed base 1, the limiter 2, and the T-shaped handle 3 are all made of steel, which has high strength and is not easily deformed.
[0012] Furthermore, the fixed base 1, limiter 2, and T-handle 3 are provided in various sizes to accommodate the disassembly of buffer valves of different sizes.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. This utility model designs a special tooling for disassembling a buffer valve of a certain type of aircraft, which is used to disassemble the screw plug component with a trigger safety in the buffer valve.
[0015] 2. The specialized tooling is disassembled into modular components with a flexible design. Individual parts can be flexibly modified to accommodate disassembly of valves of different sizes.
[0016] 3. The utility model designs a special tooling for disassembling a certain type of aircraft buffer valve. It can be used for disassembly and assembly at the same time. The T-shaped handle can ensure uniform force distribution, thereby ensuring the maintenance of the aircraft buffer valve.
[0017] 4. This utility model is firmly fixed, easy to operate, and enables the disassembly of the aircraft buffer valve. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a buffer valve structure;
[0019] Figure 2 This is a schematic diagram of the overall design of this utility model;
[0020] Figure 3 This is an assembly diagram of the present invention;
[0021] Figure 4 This is a schematic diagram of the T-shaped handle of the present invention, wherein (a) is a sectional view, (b) is a side view, and (c) is a top view;
[0022] Figure 5 This is a schematic diagram of the limiter of this utility model;
[0023] Figure 6 This is a schematic diagram of the fixing base of this utility model.
[0024] In the diagram, 1-fixed base; 2-limiter; 3-T-handle; 4-cover; 5-housing; 6-screw plug. Detailed Implementation
[0025] The technical solution of this utility model will now be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments that are improved or adjusted by those skilled in the art based on the embodiments of this utility model are within the protection scope of this utility model.
[0026] This utility model provides a special tooling for disassembling aircraft buffer valves, applicable to a certain type of aircraft buffer valve. The disassembly tooling is a modular assembly, including a fixed base 1, a limiter 2, and a T-shaped handle 3, all made of steel, possessing high strength and resistance to deformation. Figure 2 and Figure 3 As shown.
[0027] like Figure 5 As shown, the limiter 2 is a cylindrical structure with one open end and one closed end. The closed end has a threaded through hole in the center. The limiter 2 has a stepped inner hole inside. The outer large diameter section of the stepped inner hole has an internal thread, and the inner small diameter section is set as a hexagonal inner hole. One end of the buffer valve plug 6 is inserted into the limiter 2. The cover 4 cooperates with the hexagonal inner hole to prevent the buffer valve from rotating relative to the limiter 2.
[0028] like Figure 6 As shown, the fixed seat 1 is a stepped shaft, with the second section having the largest outer diameter and external threads. The first section is a hand-held section, and the third section has a groove. The outer diameter of the groove is set according to the head of the buffer valve housing 5. One side of the third section of the fixed seat 1 extends into the limiter 2. The second section is threaded with the large diameter section of the stepped inner hole of the limiter 2, so that the end face of the third section fits against the shoulder of the buffer valve housing 5, pressing the buffer valve tightly in the fixed seat 1.
[0029] like Figure 4As shown, the T-handle 3 has an external thread, and its end is shaped like a flat-blade. The T-handle 3 is screwed into the limiter 2 through the closed end threaded hole. Its end flat-blade is connected to the buffer valve plug 6. Twisting the T-handle 3 disassembles the plug 6.
[0030] The working process of this utility model is as follows: During disassembly, one end of the buffer valve plug 6 is inserted into the hexagonal hole of the limiter 2. One side of the third section of the fixing seat 1 extends into the limiter 2. The second section engages with the internal thread of the large diameter section of the stepped inner hole of the limiter 2, so that the end face of the third section fits against the shoulder of the buffer valve housing 5, pressing the buffer valve tightly in the fixing seat 1. The positions of the limiter 2 and the fixing seat 1 are adjustable. The T-handle 3 is screwed into the threaded through hole of the closed end of the limiter 2 containing the buffer valve. After being screwed to a certain position, the flat-blade at its end engages with the buffer valve plug 6. Continue to rotate the T-handle 3 to achieve the disassembly of the buffer valve plug 6. The T-handle 3 is subjected to uniform force to ensure the quality of the disassembly of the plug 6.
[0031] The above-described embodiments are merely illustrative of the implementation of this utility model, but should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A special tooling for disassembling aircraft buffer valves, characterized in that, The disassembly tooling includes a fixed base (1), a limiter (2), and a T-shaped handle (3); The limiter (2) is a cylindrical structure with one open end and one closed end. The closed end has a threaded through hole in the center. The limiter (2) has a stepped inner hole inside. The outer large diameter section of the stepped inner hole has an internal thread, and the inner small diameter section is set as a hexagonal inner hole. The buffer valve plug (6) is inserted into the limiter (2) with one side facing inward. The cover (4) fits with the hexagonal inner hole to prevent the buffer valve from rotating relative to the limiter (2). The fixed seat (1) is a stepped shaft. Its second section has the largest outer diameter and is threaded. The first section is a hand-held section. The third section has a groove. The outer diameter of the groove is set according to the head of the buffer valve housing (5). One side of the third section of the fixed seat (1) extends into the limiter (2). The second section is threaded with the large diameter section of the stepped inner hole of the limiter (2), so that the end face of the third section fits against the shoulder of the buffer valve housing (5) and presses the buffer valve into the fixed seat (1). The T-shaped handle (3) is threaded externally, and its end is shaped like a slotted cutter. The T-shaped handle (3) is screwed into the threaded through hole of the closed end of the limiter (2), and its end slotted cutter is connected to the buffer valve plug (6).
2. The special tooling for disassembling an aircraft buffer valve according to claim 1, characterized in that, The fixed base (1), limiter (2), and T-handle (3) are all made of steel.