Disassembling and assembling tool for aircraft refueling connector crankshaft

Abstract

The utility model provides an aircraft refueling joint crankshaft dismounting tool which comprises a plurality of dismounting rods used for dismounting refueling joint components and further comprises a combined dismounting roller which comprises a dismounting roller set and a dismounting barrel shaft movably arranged in the middle of the dismounting roller set, and the dismounting roller set comprises a first dismounting roller and a second dismounting roller. The outer wall of the dismounting barrel shaft is provided with a connecting hole matched with the first dismounting roller and / or the second dismounting roller, and the first dismounting roller and the second dismounting roller are assembled and matched with the dismounting barrel shaft through the connecting hole to dismount the oiling connector component. According to the combined dismounting roller, the oil filling connector crankshaft part is rapidly dismounted, through combination of simple tools and integration of a small number of parts, the tool manufacturing cost is reduced, universality is improved, the lever principle is utilized, dismounting is labor-saving, the dismounting and maintenance time is shortened, dismounting is conducted through cooperation, the flexibility and adaptability of the tool are improved, and the dismounting efficiency is improved. And the defects of various tools and disordered and tedious maintenance during refueling joint maintenance are overcome.

Description

Technical Field

[0001] This utility model belongs to the technical field of aviation pressure refueling connectors, specifically relating to a crankshaft disassembly and assembly tool for aircraft refueling connectors. Background Technology

[0002] The aviation pressure refueling connector is a key connection device used in aircraft pressure refueling systems and is an important component for achieving efficient and safe fuel refueling. Its performance and reliability are directly related to refueling efficiency and flight safety, therefore, it requires regular inspection and maintenance, especially the cleaning, inspection, or replacement of the internal core component—the valve assembly.

[0003] Valve components are responsible for controlling fuel flow and preventing leakage and backflow during connection and disconnection. Operating in high-pressure, impurity-laden environments for extended periods, they are prone to wear and contamination. However, existing methods for disassembling and maintaining valve components are cumbersome, often requiring specialized tools for different connector types, resulting in complex and time-consuming procedures. Furthermore, existing tools are often limited in function and lack versatility, leading to low tool utilization, increased maintenance costs, and further increased equipment investment and economic costs, hindering the flexible and efficient execution of maintenance tasks. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a crankshaft disassembly and assembly tool for aircraft refueling connectors to solve the existing problems.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a crankshaft disassembly and assembly tool for an aircraft refueling connector, comprising several disassembly rods for disassembling refueling connector components, and further comprising:

[0006] The combined disassembly roller includes a disassembly roller assembly and a disassembly cylinder shaft movably disposed in the middle of the disassembly roller assembly. The disassembly roller assembly includes a first disassembly roller and a second disassembly roller. The outer wall of the disassembly cylinder shaft has a connection hole adapted to the first disassembly roller and / or the second disassembly roller. The first disassembly roller and the second disassembly roller are assembled and cooperated with the disassembly cylinder shaft through the connection hole to disassemble the oiling connector component.

[0007] As a further improvement, the refueling connector includes a connector body and a crankshaft positioning component detachably disposed on the connector body. The crankshaft positioning component 16 is fixed to the connector body 1 by a valve nut. The crankshaft positioning component is rotatably disposed inside the connector body 1 and is used to control the lifting of the refueling valve.

[0008] As a further improvement, a connecting roller is coaxially provided on the top of the first disassembly roller, and a pin is coaxially provided on the connecting roller. The second disassembly roller is provided with a receiving groove that can just accommodate the connecting roller and the pin.

[0009] As a further improvement, the disassembly cylinder shaft includes a cylinder shaft body and a cylinder shaft seat that are integrally connected. The top of the cylinder shaft body is provided with a connecting cavity that runs through it laterally. The connecting cavity is provided with two connecting holes on the outer wall of the cylinder shaft body. The bottom of the cylinder shaft seat is provided with at least two fixing blocks that extend downward along the axial direction.

[0010] As a further improvement, the diameter of the connecting roller is smaller than that of the first disassembly roller and is adapted to the connecting cavity.

[0011] As a further improvement, the ejector pin and the connecting roller are sequentially inserted into the receiving groove through the connecting hole laterally through the connecting cavity, and are fastened together by the connecting roller, so that the disassembly roller group can rotate around the disassembly cylinder shaft as the rotation axis.

[0012] As a further improvement, the first disassembly roller and the second disassembly roller are connected by any close combination of threaded connection, snap-fit ​​connection, or connection.

[0013] As a further improvement, the outer wall of the top of the connecting roller is provided with a threaded section with external thread patterns, and the inner wall of the receiving groove is provided with an internal thread pattern that is threadedly connected to the external thread pattern, for threaded connection between the first disassembly roller and the second disassembly roller.

[0014] As a further improvement, at least two of the fixing blocks are fitted with the valve nut for positioning and disassembling the valve nut.

[0015] As a further improvement, the main body of the cylinder shaft and the cylinder shaft seat have a positioning cavity that extends axially to connect the two vertically, and the positioning cavity is adapted to the oiling connector component.

[0016] The beneficial effects of this utility model are as follows: This utility model provides a combined disassembly roller for quick disassembly of the crankshaft component of the oil filler connector. The combined disassembly roller is composed of multiple parts, and its individual components can also assist in disassembling the valve component of the oil filler connector. The fixing pin can be pushed out by the ejector pin on the first disassembly roller. At the same time, in order to facilitate the storage of the ejector pin, the first disassembly roller and the second disassembly roller are combined for storage, which increases the tool integration and reduces the potential risk of injury caused by the ejector pin being too long. It can also be combined with the disassembly cylinder shaft for disassembly. The fixing block on the disassembly cylinder shaft is adapted to engage with the positioning disassembly hole of the valve nut, making disassembly labor-saving and quick. By combining simple tools and integrating a small number of parts, the cost of tool manufacturing is reduced and versatility is increased. Utilizing the lever principle between the first disassembly roller, the second disassembly roller and the disassembly cylinder shaft, the first part is driven by the rotating rod and the second part is the rotating axis, which makes disassembly labor-saving and shortens the disassembly and maintenance time. Through complementary functions and coordinated cooperation, the tool's flexibility and adaptability are improved, solving the shortcomings of numerous tools and complicated and cumbersome maintenance when repairing oil filler connectors. Attached Figure Description

[0017] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is an exploded view of the combined disassembly roller according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the assembly structure of the combined disassembly roller according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the disassembly of the cylinder shaft according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the aircraft refueling connector structure according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the disassembly rod according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the combined maintenance operation of the combined disassembly roller in an embodiment of this utility model. Figure 1 ;

[0024] Figure 7 This is a schematic diagram of the combined maintenance operation of the combined disassembly roller in an embodiment of this utility model. Figure 2 ;

[0025] Figure 8 This is a schematic diagram of the combined maintenance operation of the combined disassembly roller in an embodiment of this utility model. Figure 3 ;

[0026] Figure 9 This is a schematic diagram of different types of disassembly rods according to embodiments of this utility model.

[0027] Explanation of key figure labels:

[0028] 1. Connector body; 10. Valve component; 11. Connecting seat; 12. Pressure regulating valve; 13. Handle seat; 14. Connector body; 15. Connecting plate; 16. Crankshaft positioning component; 17. Valve nut;

[0029] 2. Disassemble the rod;

[0030] 3. Assemble and disassemble the rollers;

[0031] 31. Disassembly roller assembly; 311. First disassembly roller; 312. Second disassembly roller; 313. Connecting roller; 314. Ejector pin; 315. Receiving groove; 316. Threaded section;

[0032] 32. Disassemble the cylinder shaft; 321. Cylinder shaft body; 322. Cylinder shaft seat; 323. Connecting cavity; 324. Connecting hole; 325. Fixing block; 326. Positioning cavity. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0034] Example

[0035] like Figure 1 , Figure 9 As shown, the structure of an aircraft refueling connector crankshaft disassembly and assembly tool according to an embodiment of the present invention will be described in detail, including a plurality of disassembly rods 2 for disassembling refueling connector components, and further including:

[0036] The assembly disassembly roller 3 includes a disassembly roller group 31 and a disassembly cylinder shaft 32 movably disposed in the middle of the disassembly roller group 31. The disassembly roller group 31 includes a first disassembly roller 311 and a second disassembly roller 312. The outer wall of the disassembly cylinder shaft 32 has a connecting hole 324 adapted to the first disassembly roller 311 and / or the second disassembly roller 312. The first disassembly roller 311 and the second disassembly roller 312 are assembled and cooperated with the disassembly cylinder shaft 32 through the connecting hole 324 to disassemble the crankshaft component of the oiling connector.

[0037] Please see Figure 4 As shown, the refueling connector includes a connector body 1 and a crankshaft positioning component 16 detachably mounted on the connector body 1. The crankshaft positioning component 16 is an important component for controlling the refueling valve assembly on the refueling connector. The crankshaft positioning component 16 is externally fixed by a valve nut 17. The outer wall of the valve nut 17 has a threaded structure and is threadedly fastened to the refueling connector. To prevent loosening, a fixing pin is also provided through the refueling connector. During installation, the valve nut passes through the crankshaft positioning component 16 of the valve assembly and the valve assembly is fastened by the threaded structure. Then, the fixing pin is inserted, and the valve handle of the valve assembly is positioned and installed with the crankshaft positioning component 16 to control the lifting function of the valve assembly. For easy disassembly, the crankshaft positioning component 16 is fixed to the connector body 1 by the valve nut 17, and the crankshaft positioning component 16 is rotatably mounted inside the connector body 1 to control the lifting of the refueling valve. The outer wall of the valve nut has several positioning and disassembly holes, specifically four, which are evenly distributed circumferentially.

[0038] Please see Figure 4As shown, the connector body 1 also includes a connector seat 11, a pressure regulating valve 12, a handle seat 13 and a connector body 14, which are connected and fixed from top to bottom by screws or bolts. The handle seat 13 is fixedly connected to the outside of the connector body by screws or bolts. The connector body 14 is provided with the valve component 10. The bottom of the valve component 10 is provided with a docking plate 15. The docking plate 15 is fixed to the bottom of the connector body by several screws and is protected and fixed by a rubber sleeve to prevent the docking plate 15 from shaking or deviating. The docking plate 15 has a slot for docking and engaging with the aircraft fuel tank refueling seat. The slot is adapted to the flange on the aircraft refueling seat.

[0039] Please see Figure 4 As shown, it should be noted that the valve component includes a valve pin located inside the main body. The valve pin is the crankshaft positioning component 16. One end of the crankshaft positioning component 16 protrudes from the connector body and is rotatably equipped with a valve handle. It is fixed to the connector body by a valve nut 17. The other end of the valve pin is located inside the main body and is rotatably equipped with a connecting rod. The end of the connecting rod is equipped with a refueling valve. The refueling valve is equipped with a valve seat that can rotate relative to the connector body. When the refueling connector and the refueling seat are installed for refueling operations, the operator can rotate the valve handle to drive the valve pin to rotate, thereby driving the connecting rod to rise and fall inside the connector body, thereby opening or closing the refueling valve.

[0040] Please see Figure 5 , Figure 9 As shown, the disassembly rod 2 is used to disassemble the aircraft refueling head components in sequence. It should be noted that the disassembly rod 2 can be made of hexagonal screwdriver bit or hexagonal socket. In some preferred embodiments, a ratchet wrench can be used in conjunction with the disassembly rod 2 to first remove the pressure regulating valve of the refueling connector.

[0041] Please see Figure 1 , Figure 2 As shown, the first disassembly roller 311 has a connecting roller 313 coaxially mounted on its top. The connecting roller 313 has a pin 314 coaxially mounted on its top. The diameter of the pin 314 is adapted to the fixing pin of the aircraft refueling connector valve handle. The second disassembly roller 312 has a receiving groove 315 that can accommodate the connecting roller 313 and the pin 314. That is, the receiving groove 315 can accommodate the connecting roller 313 and the pin 314 inside it. The first disassembly roller 311 and the second disassembly roller 312 are detachably connected by combination installation.

[0042] Please see Figure 1 , Figure 3As shown, the disassembly cylinder 32 includes a cylinder body 321 and a cylinder seat 322 that are integrally connected. The top of the cylinder body 321 is provided with a connecting cavity 323 that runs horizontally through it. The connecting cavity 323 is provided with two connecting holes 324 that are formed on the outer wall of the cylinder body 321. Therefore, the connecting cavity 323 and the connecting holes 324 have the same diameter. The bottom of the cylinder seat 322 is provided with at least two fixing blocks 325 that extend downward along the axial direction. Since the crankshaft positioning component 16 on the aircraft refueling connector has four evenly arranged positioning and disassembly holes for disassembly, in this embodiment, the fixing blocks 325 are preferably two, symmetrically arranged and adapted to the positioning and disassembly holes on the valve nut 17 outside the crankshaft positioning component 16 of the aircraft refueling head.

[0043] Please see Figure 3 As shown, the cylindrical shaft body 321 and the cylindrical shaft seat 322 have a positioning cavity 326 extending axially to connect the two vertically. The positioning cavity 326 is adapted to the valve pin of the refueling connector valve component.

[0044] Please see Figure 1 As shown, the diameter of the connecting roller 313 is relatively smaller than that of the first disassembly roller 311, and it is adapted to the connecting cavity 323. That is, the connecting roller 313 can fit through the connecting hole 324. Since the cylindrical shaft body 321 and the cylindrical shaft seat 322 have positioning cavities 326, the first disassembly roller 311 will sequentially assemble with the second disassembly roller 312 through the connecting holes 324 on both sides of the cylindrical shaft body 321. At the same time, at least two, preferably two, fixing blocks 325 are fitted with the four positioning and disassembly holes on the valve nut 17 for positioning and disassembling the valve nut 17.

[0045] Please see Figure 1 , Figure 6 , Figure 7 , Figure 8As shown, after disassembling the connecting seat 11, pressure regulating valve 12, handle seat 13, and other components sequentially using the disassembly rod 2, the first disassembly roller 311 and the second disassembly roller 312 are first used separately. Holding the first disassembly roller 311, the ejector pin 314 is aligned with the fixing pin of the aircraft refueling connector valve handle, and then pushed out directly. Next, the disassembly roller assembly 31 and the disassembly cylinder shaft 32 are assembled. Holding the first disassembly roller, the ejector pin 314 and the connecting roller 313 are sequentially passed through the connecting hole 324 on one side and transversely through the connecting cavity 323. Holding the second disassembly roller, the ejector pin 314 is passed through the connecting hole 324 on the other side and the ejector pin 314 is pushed out. 14 and the connecting roller 313 extend into the receiving groove 315 and are then fastened together by the connecting roller 313. At this time, the disassembly cylinder shaft 32 is positioned relative to the connecting roller 313. After assembly, the fixing block is aligned with the positioning disassembly hole on the valve nut and pressed into place. Then, the entire assembly (combined disassembly roller 3) is held and rotated with the disassembly roller group 31 as the rotating rod and the disassembly cylinder shaft 32 as the rotating axis. By combining simple tools and integrating a small number of parts, the cost of tool manufacturing is reduced. At the same time, the lever principle is used to balance the torque, making the disassembly method more labor-saving and shortening the disassembly and maintenance time.

[0046] Please see Figure 1-2 As shown, the first disassembly roller 311 and the second disassembly roller 312 are tightly combined by any one of the following methods: threaded connection, snap-fit ​​connection, or connection. In this embodiment, a threaded connection is specifically used to combine the first disassembly roller 311 and the second disassembly roller 312. The threaded connection has a larger contact area and a better mechanical structure, and can withstand significantly higher torsional and tensile / compressive loads. It has high connection strength and strong load-bearing capacity, and is suitable for high-temperature environments. The threaded connection is further explained as follows:

[0047] The connecting roller 313 has a threaded section 316 with external threaded texture on its top outer wall, and the receiving groove 315 has an internal threaded texture that is threaded to the external threaded texture on its inner wall. This is used for the threaded connection between the first disassembly roller 311 and the second disassembly roller 312. After the combined disassembly roller 3 is installed, the fixing block 325 is aligned with the positioning disassembly hole and inserted. Then, the fixed block 325 and the positioning disassembly hole form a rotational constraint force to directly rotate and disassemble, which is convenient, labor-saving, and allows for quick disassembly. By using a combination tool, the crankshaft positioning component can be perfectly disassembled, and it can also be disassembled into the first disassembly roller 311 and the second disassembly roller. 312 can be used alone to improve tool utilization. The combined disassembly roller 3 can quickly disassemble crankshaft positioning parts and is used to inspect the valve components of the aircraft refueling connector. As a core component during refueling, the valve components usually require regular maintenance by maintenance personnel. This application first releases the positioning restriction of the fixing pin with a single tool, and then combines single tools into a combined tool. Through functional complementarity, the tool is driven by a rotating rod and the rotating shaft is used to cooperate in disassembly, improving tool flexibility and adaptability. This solves the shortcomings of having many tools, messy and cumbersome maintenance, and lack of standard maintenance when inspecting refueling connectors.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crankshaft disassembly and assembly tool for an aircraft refueling connector, comprising a plurality of disassembly rods (2) for disassembling refueling connector components, characterized in that, Also includes: The combined disassembly roller (3) includes a disassembly roller assembly (31) and a disassembly cylinder shaft (32) movably disposed in the middle of the disassembly roller assembly (31). The disassembly roller assembly (31) includes a first disassembly roller (311) and a second disassembly roller (312). The outer wall of the disassembly cylinder shaft (32) has a connection hole (324) adapted to the first disassembly roller (311) and / or the second disassembly roller (312). The first disassembly roller (311) and the second disassembly roller (312) are assembled and cooperated with the disassembly cylinder shaft (32) through the connection hole (324) to disassemble the oiling connector component.

2. The aircraft refueling connector crankshaft disassembly and assembly tool according to claim 1, characterized in that: The refueling connector includes a connector body (1) and a crankshaft positioning component (16) detachably mounted on the connector body (1). The crankshaft positioning component (16) is fixed to the connector body (1) by a valve nut (17). The crankshaft positioning component (16) is rotatably mounted inside the connector body (1) and is used to control the lifting of the refueling valve.

3. The aircraft refueling connector crankshaft disassembly and assembly tool according to claim 2, characterized in that: The first disassembly roller (311) has a connecting roller (313) coaxially mounted on its top, and a pin (314) coaxially mounted on the connecting roller (313). The second disassembly roller (312) has a receiving groove (315) that can just accommodate the connecting roller (313) and the pin (314).

4. The aircraft refueling connector crankshaft disassembly and assembly tool according to claim 3, characterized in that: The disassembly cylinder shaft (32) includes a cylinder shaft body (321) and a cylinder shaft seat (322) that are integrally connected. The top of the cylinder shaft body (321) is provided with a connecting cavity (323) that runs horizontally through it. The connecting cavity (323) is provided with two connecting holes (324) on the outer wall of the cylinder shaft body (321). The bottom of the cylinder shaft seat (322) is provided with at least two fixing blocks (325) that extend downward along the axial direction.

5. The aircraft refueling connector crankshaft disassembly and assembly tool according to claim 4, characterized in that: The diameter of the connecting roller (313) is smaller than that of the first disassembly roller (311), and it is adapted to the connecting cavity (323).

6. The aircraft refueling connector crankshaft disassembly and assembly tool according to claim 5, characterized in that: The ejector pin (314) and the connecting roller (313) pass through the connecting hole (324) and extend laterally into the receiving groove (315) through the connecting cavity (323), and are fastened together by the connecting roller (313), so that the disassembly roller group (31) can rotate around the disassembly cylinder shaft (32) as the rotation axis.

7. The aircraft refueling connector crankshaft disassembly and assembly tool according to claim 6, characterized in that: The first disassembly roller (311) and the second disassembly roller (312) are connected by any one of the following close combinations: threaded connection, snap-fit ​​connection, or connection.

8. The aircraft refueling connector crankshaft disassembly and assembly tool according to claim 7, characterized in that: The top outer wall of the connecting roller (313) is provided with a threaded section with external thread pattern, and the inner wall of the receiving groove (315) is provided with an internal thread pattern that is threadedly connected to the external thread pattern, for the threaded connection between the first disassembly roller (311) and the second disassembly roller (312).

9. The aircraft refueling connector crankshaft disassembly and assembly tool according to claim 4, characterized in that: At least two of the fixing blocks (325) are fitted with the valve nut (17) for positioning and disassembling the valve nut (17).

10. The aircraft refueling connector crankshaft disassembly and assembly tool according to claim 4, characterized in that: The main body (321) and the bearing seat (322) have a positioning cavity (326) extending axially to connect the two vertically. The positioning cavity (326) is adapted to the refueling connector component.

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