A wrench for aviation plugs

Abstract

This utility model relates to a wrench for aviation connectors, comprising: a socket head including a groove for fitting and securing the aviation connector; a fixed shaft fixed to the socket head, the fixed shaft being located on the opposite side of the groove, with one end of the fixed shaft extending out of the socket head; and a handle mounted on the fixed shaft and rotatable therearound, the handle being located at the portion of the fixed shaft extending out of the socket head. Compared with the prior art, this utility model has advantages such as suitability for confined spaces, reduced labor intensity, and improved efficiency and quality in the assembly and disassembly of aviation connectors.

Description

Technical Field

[0001] This utility model relates to a wrench, and more particularly to a wrench for aviation plugs. Background Technology

[0002] During nuclear power plant reactor overhauls, it is necessary to disassemble and reassemble the aviation connectors of the reactor core instrumentation system. These aviation connectors are numerous, typically exceeding one hundred, and are installed in extremely confined spaces with densely packed, multi-layered cables, creating a complex operating environment.

[0003] Currently, the installation and removal of plugs mainly rely on manual labor combined with traditional tools. Because cables are arranged in multiple layers vertically and sag naturally under gravity, operators often need to lift the cables to access the plug itself. Aviation plugs have a large diameter, typically around 60mm, requiring significant torque during installation. Handling them without a clamp can easily cause hand injuries, and is inefficient, necessitating frequent operator rotations, which severely impacts overhaul progress.

[0004] The existing operating tools are typically stainless steel wrenches about 1.2 meters long and weighing about 4 kilograms. At least two people are required to operate them: one aligns the plug while the other applies torque by holding the handle. In areas where cables are heavily overlapped and difficult to reach with tools, a third person may even be needed to lift the cables to create operating space. This operating method is labor-intensive and difficult to coordinate, easily leading to personnel fatigue and posing risks of poor alignment, plug damage, or improper installation, severely impacting the reliability of equipment reinstallation and the efficiency of overhaul work.

[0005] Patent publication number CN223013022U discloses a wrench with an adjustable handle angle, comprising a head and a handle, the head and the handle being detachably connected. The head has two pairs of pin holes, and one end of the handle has an extension with corresponding pairs of pin holes. The head has a cavity accommodating the extension of the handle, and the cavity has an opening. When the extension of the handle enters the cavity through the opening, a pin passes through either pair of pin holes in the head and the pair of pin holes in the handle, thereby connecting the head and the handle. However, adjusting the handle angle of this wrench requires a large amount of space, making it unsuitable for use in densely packed plugs. Utility Model Content

[0006] The purpose of this utility model is to overcome the defects of the prior art and provide a wrench for aviation plugs that is suitable for narrow spaces, can reduce labor intensity, and can improve the efficiency and quality of aviation plug assembly and disassembly.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] An aviation plug wrench, comprising:

[0009] A socket, which includes a groove for fitting and securing to the shape of an aviation plug;

[0010] A fixed shaft is fixed to the sleeve, the fixed shaft is located on the opposite side of the groove, and one end of the fixed shaft extends out of the sleeve;

[0011] And a handle mounted on the fixed shaft and rotatable about it, the handle being located at the portion of the fixed shaft extending out of the sleeve.

[0012] Furthermore, the fixed shaft is perpendicular to the handle, and the handle and the sleeve are located in mutually parallel vertical planes.

[0013] Furthermore, the closest distance between the vertical plane where the handle is located and the vertical plane where the sleeve is located is 25-30cm.

[0014] Furthermore, the handle includes a handle body and a cavity sleeved on the fixed shaft;

[0015] A ratchet locking mechanism for connecting the handle and the fixed shaft is provided in the cavity.

[0016] Furthermore, the ratchet locking mechanism includes:

[0017] A ratchet is rotatably disposed within the cavity, its outer ring having evenly distributed toothed structures, and its inner ring being connected to the fixed shaft;

[0018] At least one pawl is rotatably connected at one end to the handle;

[0019] An elastic element with one end connected to the handle and the other end connected to the pawl allows the end of the pawl to selectively engage with the toothed structure in principle.

[0020] And an elastic element with one end connected to the handle and the other end connected to the pawl, so that the end of the pawl selectively engages with the toothed structure.

[0021] Furthermore, the ratchet locking mechanism also includes a steering mechanism located on one side of the pawl and used to limit whether the pawl engages with the toothed structure;

[0022] Two pawls are provided, which are symmetrically distributed on both sides of the steering gear.

[0023] Furthermore, the steering mechanism is configured such that when the steering mechanism turns to one side of the pawl, it abuts against one of the pawls, separating it from the ratchet, while the other pawl selectively engages with the toothed structure of the ratchet; when the steering mechanism does not deflect, both pawls engage with the ratchet.

[0024] Furthermore, the steering mechanism is a rounded isosceles trapezoidal structure. When it does not deflect, the long base of the rounded isosceles trapezoidal structure faces the direction of the ratchet, that is, the long base of the rounded isosceles trapezoidal structure is perpendicular to the axis of symmetry of the two pawls.

[0025] Furthermore, the steering mechanism and the elastic element are respectively disposed on both sides of the pawl.

[0026] Furthermore, the elastic element is a spring.

[0027] Furthermore, the steering gear is connected to a rotating shaft that drives its rotation, the rotating shaft passing through the handle, one end of the rotating shaft being connected to the steering gear and the other end being connected to the paddle shifter.

[0028] Furthermore, the fixed shaft is fixedly connected to the inner ring of the ratchet.

[0029] Furthermore, the fixed shaft is detachably connected to the ratchet, and a sleeve is fixedly connected to the ratchet inside the ratchet, the inner ring of the sleeve having a polygonal structure;

[0030] The fixed shaft has a segmented structure, consisting of a fixed segment, a polygonal segment that matches the inner ring of the sleeve, and a threaded segment.

[0031] Furthermore, a nut is fitted onto the threaded section of the fixed shaft to restrict the handle from sliding axially on the fixed shaft.

[0032] Furthermore, a fall protection ring is provided at the top of the hood.

[0033] Furthermore, the groove is a U-shaped groove.

[0034] Furthermore, the inner surface of the tank is roughened to increase friction.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] (1) This utility model provides a wrench specifically designed for the installation and removal of aviation connectors in nuclear power plant core instrumentation systems. Its core advantage lies in its innovative structural design, which comprehensively addresses the challenges of operability, ergonomics, and safety in confined spaces. Traditional wrenches, due to their length and rigid structure, cannot be adjusted in dense cabling environments and require multiple operators. This utility model incorporates a fixed shaft between the socket and the handle, allowing the handle to rotate freely 360 degrees. This provides the tool with excellent spatial adaptability, enabling the operator to find a suitable application space from any direction, significantly reducing the need for additional operating space and auxiliary personnel.

[0037] (2) This utility model provides a wrench specifically designed for the disassembly and assembly of aviation plugs in nuclear power plant core instrumentation systems. The wrench defines a fixed shaft that extends to the opposite side of the socket, with the handle mounted on the extended portion and parallel to the socket but not in the same plane, i.e., there is an offset distance. The wiring inside avionics equipment is extremely dense, and plugs are usually tightly surrounded by numerous cables and adjacent equipment, resulting in very limited operating space. Traditional wrenches or sockets require operation directly facing the plug's axis, often impossible due to insufficient space. This utility model cleverly offsets the force application plane of the handle from the working plane of the socket through the fixed shaft structure. During operation, the handle swings and rotates in a relatively open area to the side of the plug, while the socket works in another plane. This allows for effective operation from the side even in extreme cases where the space in front of the plug is almost completely blocked, something a straight-handle socket wrench simply cannot achieve.

[0038] (3) The outstanding advantage of this utility model lies in its excellent adaptability to extremely narrow working environments. The ratchet locking mechanism integrated inside the handle of this utility model allows the wrench to simultaneously achieve two modes: the handle rotating around a fixed axis and the handle driving the fixed axis to rotate. This means that when working in areas with overlapping multiple cables, the operator does not need to move the entire tool into the congested center; they only need to precisely insert the socket into the plug, and the handle can be flexibly positioned in relatively spacious locations such as the side or below. This design completely breaks through the strict requirements of traditional long wrenches for radial swing space, as well as the limitations of similar patents CN223013022U, which require a large angle adjustment space. This effectively avoids the auxiliary work of frequently lifting cables to make room, and significantly improves the efficiency of a single operation.

[0039] (4) The ratchet locking mechanism of this utility model converts continuous rotational torque into small-angle reciprocating oscillation. The operator only needs to swing the handle slightly with one hand to output huge torque, which completely changes the laborious mode of traditional operation where bare-handed operation is prone to injury to the hand or requires a lot of force to swing a long rod. Combined with the rotatable connection between the sleeve and the handle, only one person is needed to complete the two tasks of centering and applying force at the same time. Problems such as high difficulty of coordination and easy fatigue of personnel are solved, which not only ensures the safety of personnel, but also reduces the dependence on frequent personnel rotation.

[0040] (5) The anti-fall ring of this utility model strictly follows the safety regulations of nuclear power plants that prohibit foreign objects from falling, and the stable connection structure between the fixed shaft and the ratchet ensures the overall rigidity under high torque output, which together ensures the reliability and consistency of the reassembly operation.

[0041] (6) This utility model achieves flexible switching between three working modes (forward adjustment / locking, reverse adjustment / locking, and full rigid locking) through the linkage mechanism of the steering gear 44 and the double pawls 42, perfectly solving the operational difficulties in extremely confined spaces. It is a precision adjustment mechanism with switchable bidirectional locking. The handle position can be reset in near-zero angle by simply moving the reversing paddle, enabling continuous, small-angle operation. At the same time, the dual support structure formed by the double pawls and the steering gear provides higher load-bearing capacity and reliability, especially the full rigid locking mode ensures the safety of final tightening. This design breaks through the limitations of traditional tools and is a functional integration and innovation for specific high-requirement working conditions.

[0042] (7) The present invention enables the handle to be detachably installed on the fixed shaft through the threaded section, polygonal structure section and sleeve fixed inside the ratchet, and the connection is firm in the working state and will not deviate due to the application of torque. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of the aviation plug wrench shown in Example 1;

[0044] Figure 2 This is a schematic diagram of the structure of the aviation plug wrench shown in Example 4;

[0045] Figure 3 This is a schematic diagram of the ratchet locking mechanism shown in Example 4;

[0046] Figure 4 This is a schematic diagram showing the position of the rotator rotating in the direction of the right pawl as shown in Example 4;

[0047] Figure 5 This is a schematic diagram of the structure of the aviation plug wrench shown in Example 5;

[0048] Figure 6 This is an exploded view of the aviation plug wrench shown in Example 5.

[0049] Explanation of markings in the diagram:

[0050] 1-Headpiece, 11-Groove, 12-Anti-fall ring;

[0051] 2-Fixed shaft, 21-Fixed section, 22-Polygonal structure section, 23-Threaded section;

[0052] 3-Handle, 31-Handle body, 32-Cavity;

[0053] 4-Ratchet locking mechanism, 41-Ratchet, 411-Toothed structure, 42-Pawl, 421-Left pawl, 422-Right pawl, 43-Elastic element, 44-Steering mechanism, 45-Rotating shaft, 46-Pulley;

[0054] 5- Fall arrestor ring;

[0055] 6-Sleeve, 61-Nut. Detailed Implementation

[0056] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. In the following embodiments or examples, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0057] It should be noted that in the description of this utility model, the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0059] An aviation plug wrench, comprising:

[0060] The connector 1 includes a groove 11 for fitting and securing to the shape of an aviation connector.

[0061] A fixing shaft 2 is fixed on the sleeve 1, the fixing shaft 2 is located on the opposite side of the groove 11, and one end of the fixing shaft 2 extends out of the sleeve 1;

[0062] and a handle 3 mounted on the fixed shaft 2 and rotatable therearound thereto, the handle 3 being located at the portion of the fixed shaft 2 that extends out of the sleeve 1.

[0063] In some specific embodiments, the fixed shaft 2 is arranged perpendicularly to the handle 3, and the handle 3 and the sleeve 1 are located in mutually parallel vertical planes.

[0064] In some specific embodiments, the closest distance between the vertical plane where the handle 3 is located and the vertical plane where the sleeve 1 is located is 25-30cm.

[0065] In some specific embodiments, the handle 3 includes a handle body 31 and a cavity 32 sleeved on the fixed shaft 2;

[0066] A ratchet locking mechanism 4 for connecting the handle 3 and the fixed shaft 2 is provided at the cavity 32.

[0067] In some specific embodiments, the ratchet locking mechanism 4 includes:

[0068] A ratchet 41 is rotatably disposed in the cavity 32, with toothed structures 411 evenly distributed on its outer ring and its inner ring connected to the fixed shaft.

[0069] At least one pawl 42, one end of which is rotatably connected to the handle 3;

[0070] And an elastic element 43, one end of which is connected to the handle 3 and the other end of which is connected to the pawl 42, so that the end of the pawl 42 selectively engages with the toothed structure 411.

[0071] In some specific embodiments, the ratchet locking mechanism 4 further includes a steering mechanism 44 located on one side of the pawl 42 and used to limit whether the pawl 42 engages with the toothed structure 411;

[0072] Two pawls 42 are provided, which are symmetrically distributed on both sides of the steering gear 44, namely the left pawl 421 and the right pawl 422.

[0073] In some specific embodiments, the steering mechanism 44 is configured such that when the steering mechanism 44 turns to one side of the pawl 42, it abuts against one of the pawls 42 and separates it from the ratchet 41, while the other pawl 42 selectively engages with the tooth structure 411 of the ratchet 41; when the steering mechanism 44 does not deflect, both pawls 42 engage with the ratchet 41.

[0074] In some specific embodiments, the steering gear 44 is a rounded isosceles trapezoidal structure. When it does not deflect, the long base of the rounded isosceles trapezoidal structure faces the direction of the ratchet 41, that is, the long base of the rounded isosceles trapezoidal structure is perpendicular to the axis of symmetry of the two pawls 42.

[0075] In some specific embodiments, the steering mechanism 44 and the elastic element 43 are respectively disposed on both sides of the pawl 42.

[0076] In some specific embodiments, the elastic element 4 is a spring.

[0077] In some specific embodiments, the steering gear 44 is connected to a rotating shaft 45 that drives its rotation, the rotating shaft 45 passing through the handle 3, one end of the rotating shaft 45 being connected to the steering gear 44 and the other end being connected to a paddle 46.

[0078] In some specific embodiments, the fixed shaft 2 is fixedly connected to the inner ring of the ratchet 41.

[0079] In some specific embodiments, the fixed shaft 2 is detachably connected to the ratchet 41, and a sleeve 6 is fixedly connected to the ratchet 41 inside the ratchet 41. The inner ring of the sleeve 6 has a polygonal structure.

[0080] The fixed shaft 2 has a segmented structure, with threaded sections 23 at both ends and a polygonal structure section 22 in the middle that matches the inner ring of the sleeve 6.

[0081] In some specific embodiments, a nut 61 is fitted on the threaded section 23 of the fixed shaft 2 to restrict the handle 3 from sliding axially on the fixed shaft 2.

[0082] In some specific embodiments, the top of the cap 1 is provided with a fall protection ring 5.

[0083] In some specific embodiments, the groove 11 is a U-shaped groove.

[0084] In some specific embodiments, the inner surface of the groove 11 is set as a rough surface to increase friction.

[0085] Each of the above embodiments can be implemented individually or in any combination of two or more.

[0086] The following description uses specific examples to illustrate the point.

[0087] Example 1

[0088] A wrench for aviation connectors, such as Figure 1 As shown, it includes:

[0089] The connector 1 includes a groove 11 for fitting and securing to the shape of an aviation connector.

[0090] A fixing shaft 2 is fixed on the sleeve 1, the fixing shaft 2 is located on the opposite side of the groove 11, and one end of the fixing shaft 2 extends out of the sleeve 1;

[0091] and a handle 3 mounted on the fixed shaft 2 and rotatable therearound thereto, the handle 3 being located at the portion of the fixed shaft 2 that extends out of the sleeve 1.

[0092] In this embodiment, the fixed shaft 2 is arranged perpendicularly to the handle 3, and the handle 3 and the sleeve 1 are located in mutually parallel vertical planes.

[0093] In this embodiment, the closest distance between the vertical plane where the handle 3 is located and the vertical plane where the sleeve 1 is located is 27cm.

[0094] This embodiment cleverly uses the fixed shaft 2 structure to offset the force application plane of the handle 3 from the working plane of the socket head. During operation, the handle 3 swings and rotates in a relatively open area to the side of the plug, while the socket head 1 works in another plane. This allows for effective operation from the side even in extreme cases where the space in front of the plug is almost completely blocked, something that straight-handle socket wrenches simply cannot achieve.

[0095] Example 2

[0096] An aviation plug wrench, comprising:

[0097] The connector 1 includes a groove 11 for fitting and securing to the shape of an aviation connector.

[0098] A fixing shaft 2 is fixed on the sleeve 1, the fixing shaft 2 is located on the opposite side of the groove 11, and one end of the fixing shaft 2 extends out of the sleeve 1;

[0099] and a handle 3 mounted on the fixed shaft 2 and rotatable therearound thereto, the handle 3 being located at the portion of the fixed shaft 2 that extends out of the sleeve 1.

[0100] In this embodiment, the fixed shaft 2 is arranged perpendicularly to the handle 3, and the handle 3 and the sleeve 1 are located in mutually parallel vertical planes.

[0101] In this embodiment, the closest distance between the vertical plane where the handle 3 is located and the vertical plane where the sleeve 1 is located is 27cm.

[0102] In this embodiment, the handle 3 includes a handle body 31 and a cavity 32 sleeved on the fixed shaft 2;

[0103] A ratchet locking mechanism 4 for connecting the handle 3 and the fixed shaft 2 is provided at the cavity 32.

[0104] In this embodiment, the ratchet locking mechanism 4 allows the wrench to simultaneously achieve two states: the handle 3 rotating around the fixed axis 2 and the handle 3 driving the fixed axis 2 to rotate. This allows the operator to work in areas with overlapping multi-layered cables without having to move the entire tool into the congested center. The operator only needs to precisely insert the socket into the plug, while the handle 3 can be flexibly positioned in relatively spacious areas such as the side or below. The operator only needs to make a small swing of the handle with one hand to output a large torque, completely changing the traditional laborious mode of manual operation that easily damages the hand or requires forcefully swinging a long lever. Combined with the rotatable connection between the socket and the handle, only one person is needed to simultaneously complete the tasks of centering and applying force. Problems such as high coordination difficulty and easy fatigue are readily solved, ensuring personnel safety and reducing reliance on frequent personnel rotation.

[0105] Example 3

[0106] A wrench for aviation connectors, such as Figure 1 As shown, it includes:

[0107] The connector 1 includes a groove 11 for fitting and securing to the shape of an aviation connector.

[0108] A fixing shaft 2 is fixed on the sleeve 1, the fixing shaft 2 is located on the opposite side of the groove 11, and one end of the fixing shaft 2 extends out of the sleeve 1;

[0109] and a handle 3 mounted on the fixed shaft 2 and rotatable therearound thereto, the handle 3 being located at the portion of the fixed shaft 2 that extends out of the sleeve 1.

[0110] In this embodiment, the fixed shaft 2 is arranged perpendicularly to the handle 3, and the handle 3 and the sleeve 1 are located in mutually parallel vertical planes.

[0111] In this embodiment, the closest distance between the vertical plane where the handle 3 is located and the vertical plane where the sleeve 1 is located is 27cm.

[0112] In this embodiment, the handle 3 includes a handle body 31 and a cavity 32 sleeved on the fixed shaft 2;

[0113] A ratchet locking mechanism 4 for connecting the handle 3 and the fixed shaft 2 is provided at the cavity 32.

[0114] In this embodiment, the ratchet locking mechanism 4 includes:

[0115] A ratchet 41 is rotatably disposed in the cavity 32, with teeth 411 evenly distributed on its outer ring and its inner ring connected to the fixed shaft.

[0116] A pawl 42, one end of which is rotatably connected to the handle 3;

[0117] And an elastic element 43, one end of which is connected to the handle 3 and the other end of which is connected to the pawl 42, so that the end of the pawl 42 selectively engages with the toothed structure 411.

[0118] In this embodiment, the steering mechanism 44 and the elastic element 43 are respectively disposed on both sides of the pawl 42.

[0119] In this embodiment, the elastic element 4 is a spring.

[0120] In this embodiment, the fixed shaft 2 is fixedly connected to the inner ring of the ratchet 41.

[0121] In this embodiment, the toothed structure 411 has a tooth shape facing one side, and the end of the pawl 42 has an engagement portion adapted to the toothed structure 11.

[0122] In this embodiment, when the handle 3 is rotated in the first direction, the engaging part of the pawl 42 slides relative to the toothed surface of the toothed structure 111 and makes room, allowing the ratchet 41 to rotate freely and thus adjusting the angle of the handle 3; when the handle 3 is rotated in an attempt to rotate in the second direction opposite to the first direction, the pawl 42 engages and abuts against the locking surface of the toothed structure 111, thus achieving reverse locking.

[0123] In this embodiment, the fixed shaft 2 is fixedly connected to the inner ring of the ratchet 41.

[0124] In this embodiment, a fall arrestor ring 5 is provided at the top of the headgear 1.

[0125] In this embodiment, the groove 11 is a U-shaped groove.

[0126] In this embodiment, the inner surface of the groove 11 is set as a rough surface to increase friction.

[0127] Example 4

[0128] A wrench for aviation connectors, such as Figure 2 As shown, it includes:

[0129] The connector 1 includes a groove 11 for fitting and securing to the shape of an aviation connector.

[0130] A fixing shaft 2 is fixed on the sleeve 1, the fixing shaft 2 is located on the opposite side of the groove 11, and one end of the fixing shaft 2 extends out of the sleeve 1;

[0131] and a handle 3 mounted on the fixed shaft 2 and rotatable therearound thereto, the handle 3 being located at the portion of the fixed shaft 2 that extends out of the sleeve 1.

[0132] In this embodiment, the fixed shaft 2 is arranged perpendicularly to the handle 3, and the handle 3 and the sleeve 1 are located in mutually parallel vertical planes.

[0133] In this embodiment, the closest distance between the vertical plane where the handle 3 is located and the vertical plane where the sleeve 1 is located is 27cm.

[0134] In this embodiment, the handle 3 includes a handle body 31 and a cavity 32 sleeved on the fixed shaft 2;

[0135] A ratchet locking mechanism 4 for connecting the handle 3 and the fixed shaft 2 is provided at the cavity 32.

[0136] In this embodiment, as Figure 3 As shown, the ratchet locking mechanism 4 includes:

[0137] A ratchet 41 is rotatably disposed in the cavity 32, with teeth 411 evenly distributed on its outer ring and its inner ring connected to the fixed shaft.

[0138] Two pawls 42, one end of which is rotatably connected to the handle 3;

[0139] An elastic element 43, with one end connected to the handle 3 and the other end connected to the pawl 42, allows the end of the pawl 42 to selectively engage with the toothed structure 411.

[0140] In this embodiment, the ratchet locking mechanism 4 further includes a steering device 44 located on one side of the pawl 42 and used to limit whether the pawl 42 engages with the toothed structure 411;

[0141] Two pawls 42 are provided, which are symmetrically distributed on both sides of the steering gear 44.

[0142] In this embodiment, the steering mechanism 44 is configured such that when the steering mechanism 44 turns to one side of the pawl 42, it abuts against one of the pawls 42 and separates it from the ratchet 41, while the other pawl 42 selectively engages with the tooth structure 411 of the ratchet 41; when the steering mechanism 44 does not deflect, both pawls 42 engage with the ratchet 41.

[0143] In this embodiment, the steering gear 44 is a rounded isosceles trapezoidal structure. When it does not deflect, the long base of the rounded isosceles trapezoidal structure faces the direction of the ratchet 41, that is, the long base of the rounded isosceles trapezoidal structure is perpendicular to the axis of symmetry of the two pawls 42.

[0144] In this embodiment, the toothed structure 411 has a symmetrical tooth shape, and the end of the pawl 42 has an engagement portion that is adapted to the toothed structure 11.

[0145] In this embodiment, the steering mechanism 44 and the elastic element 43 are respectively disposed on both sides of the pawl 42.

[0146] In this embodiment, the elastic element 4 is a spring.

[0147] In this embodiment, the steering gear 44 is connected to a rotating shaft 45 that drives its rotation. The rotating shaft 45 passes through the handle 3. One end of the rotating shaft 45 is connected to the steering gear 44, and the other end is connected to the paddle shifter 46.

[0148] In this embodiment, the fixed shaft 2 is fixedly connected to the inner ring of the ratchet 41.

[0149] In this embodiment, a fall arrestor ring 5 is provided at the top of the headgear 1.

[0150] In this embodiment, the groove 11 is a U-shaped groove.

[0151] In this embodiment, the inner surface of the groove 11 is set as a rough surface to increase friction.

[0152] In this embodiment, the operation process of the aviation plug wrench is as follows:

[0153] like Figure 3 As shown, in the initial state, the steering mechanism 44 does not deflect. The apex of the circular triangular structure of the steering mechanism 44 faces away from the ratchet 41, restricting both the left pawl 421 and the right pawl 422 from engaging with the ratchet 41, thus preventing the ratchet 41 from rotating. When the handle 3 is turned, the sleeve 1 can be rotated. However, due to extremely limited installation space, dense and overlapping cables, and a complex operating environment, the handle 3 cannot rotate when turned to a certain angle. In this case, rotating the paddle 46 drives the steering mechanism 44 to rotate via the rotating shaft 45, causing the ratchet 41 and the handle 3 to rotate relative to each other.

[0154] like Figure 4As shown, when the rotator 44 rotates towards the right pawl 422, the rotator 44 abuts against the left pawl 421, disengaging it from the ratchet 41 and preventing it from engaging. Simultaneously, the right pawl 422 engages with the teeth 411 of the ratchet 41. The right side of the right pawl 422 is connected to the handle 3 via a spring, allowing the ratchet 41 to rotate counter-clockwise. Since the ratchet 41 is fixed to the fixed shaft 2, rotating the handle 3 clockwise adjusts the angle between the handle 3 and the fixed shaft 2. When rotating the handle 3 counter-clockwise, the left side of the right pawl 422 is restricted by the position of the rotator 44 and cannot rotate to the left. Therefore, the ratchet 41 is locked, and the handle 3 rotates together with the ratchet 41 without relative rotation, thus driving the sleeve 1 to rotate. The reverse is also true.

[0155] In this embodiment, the ratchet locking mechanism 4 rotates freely in one direction without transmitting torque, and locks in the opposite direction to transmit torque. The structure described in this embodiment is a switchable bidirectional locking precision adjustment mechanism. Through the linkage mechanism of the steering gear 44 and the double pawls 42, it achieves flexible switching between three working modes: forward adjustment / locking, reverse adjustment / locking, and full rigid locking, perfectly solving the operational challenges in extremely confined spaces. This structure only requires moving the reversing lever 46 to reset the handle position within a near-zero angle, enabling continuous, small-angle operation. Simultaneously, the dual support structure formed by the double pawls 42 and the steering gear 44 provides higher load-bearing capacity and reliability, especially the full rigid locking mode, which ensures the safety of the final tightening. This design breaks through the limitations of traditional tools and represents a functional integration and innovation for specific high-demand working conditions.

[0156] Example 5

[0157] like Figure 5 and 6 As shown, most aspects are the same as in Embodiment 4, except that the fixed shaft 2 is detachably connected to the ratchet 41, and the ratchet 41 has a sleeve 6 fixedly connected to it. The inner ring of the sleeve 6 is a regular hexagonal structure. The fixed shaft 2 has a segmented structure, consisting of a fixed segment 21, a polygonal segment 22 that matches the inner ring of the sleeve 6, and a threaded segment 23. The fixed segment 21 is used to abut against the handle 3, restricting the axial sliding of the fixed shaft 2. A nut 61 is fitted on the threaded segment 23 of the fixed shaft 2, allowing the handle 3 to be detachably installed and installed on the fixed shaft 2. The nut 61 restricts the axial sliding of the handle 3 on the fixed shaft 2.

[0158] When it is necessary to adapt to different shapes of aviation plugs, the nut 61 can be unscrewed to separate the handle 3 from the fixed shaft 2, and then the socket 1 with different groove 11 shapes can be replaced.

[0159] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A wrench for an aviation connector, characterized in that, include: The sleeve (1) includes a groove (11) for fitting and securing to the shape of an aviation plug; A fixed shaft (2) is fixed on the sleeve (1), the fixed shaft (2) is located on the opposite side of the groove (11), and one end of the fixed shaft (2) extends out of the sleeve (1); and a handle (3) mounted on the fixed shaft (2) and rotatable therearound, the handle (3) being located at the portion of the fixed shaft (2) extending out of the sleeve (1).

2. The wrench for an aviation plug according to claim 1, characterized in that, The fixed shaft (2) is perpendicular to the handle (3), and the handle (3) and the sleeve (1) are located in mutually parallel vertical planes.

3. The wrench for an aviation plug according to claim 2, characterized in that, The closest distance between the vertical plane where the handle (3) is located and the vertical plane where the sleeve (1) is located is 25-30cm.

4. The wrench for an aviation plug according to claim 1, characterized in that, The handle (3) includes a handle body (31) and a cavity (32) sleeved on the fixed shaft (2); A ratchet locking mechanism (4) for connecting the handle (3) and the fixed shaft (2) is provided at the cavity (32).

5. A wrench for an aviation plug according to claim 4, characterized in that, The ratchet locking mechanism (4) includes: A ratchet (41) is rotatably disposed in the cavity (32), with toothed structures (411) evenly distributed on its outer ring and its inner ring connected to the fixed shaft. At least one pawl (42) is rotatably connected at one end to the handle (3); And an elastic element (43) with one end connected to the handle (3) and the other end connected to the pawl (42), so that the end of the pawl (42) selectively engages with the toothed structure (411).

6. A wrench for an aviation plug according to claim 5, characterized in that, The ratchet locking mechanism (4) also includes a steering device (44) located on one side of the pawl (42) and used to limit whether the pawl (42) engages with the toothed structure (411); Two pawls (42) are provided, which are symmetrically distributed on both sides of the steering gear (44).

7. A wrench for an aviation plug according to claim 6, characterized in that, The steering mechanism (44) is configured such that when the steering mechanism (44) turns to one side of the pawl (42), it abuts against one of the pawls (42) and separates it from the ratchet (41), while the other pawl (42) selectively engages with the tooth structure (411) of the ratchet (41); when the steering mechanism (44) does not deflect, both pawls (42) engage with the ratchet (41).

8. A wrench for an aviation plug according to claim 6, characterized in that, The steering gear (44) is connected to a rotating shaft (45) that drives its rotation. The rotating shaft (45) passes through the handle (3). One end of the rotating shaft (45) is connected to the steering gear (44), and the other end is connected to the paddle (46).

9. A wrench for an aviation plug according to claim 5, characterized in that, The fixed shaft (2) is fixedly connected to or detachably connected to the inner ring of the ratchet (41); When the fixed shaft (2) is detachably connected to the ratchet (41), a sleeve (6) is fixedly connected to the ratchet (41), and the inner ring of the sleeve (6) is a polygonal structure; the fixed shaft (2) is a segmented structure, which consists of a fixed segment (21), a polygonal structure segment (22) that matches the inner ring of the sleeve (6), and a threaded segment (23).

10. A wrench for an aviation plug according to claim 1, characterized in that, The top of the hood (1) is provided with a fall protection ring (5).

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