A wrench assembly for removing mechanical locking bolts and nuts.

Abstract

This utility model discloses a wrench assembly for disassembling mechanical locking bolts and nuts, belonging to the field of wrench technology. The wrench assembly includes a disassembly wrench and a stop pin; the disassembly wrench includes a first handle and a sleeve, the first end of the first handle being provided with a sleeve and helical teeth, and the inner wall of the sleeve having an annular toothed structure; the stop pin includes a second handle and an inner rod, the first end of the second handle having a mounting hole, and one end of the inner rod being detachably fixed in the mounting hole. The wrench assembly of this utility model ensures that the interlayer plate is not damaged during the disassembly of mechanical locking bolts and nuts.

Description

Technical Field

[0001] This utility model belongs to the field of wrench technology, and in particular relates to a wrench assembly for disassembling mechanically tightened bolts and nuts. Background Technology

[0002] New-type aircraft fly at high speeds and experience significant fuselage vibrations, thus requiring higher vibration resistance in fasteners. Mechanical locking bolts and nuts are a novel type of threaded locking structure with high vibration resistance. While mechanical locking bolt and nut connections are already used in new-type aircraft, the lack of a dedicated wrench for these nuts makes disassembly difficult. Furthermore, damage to the locking interlayer (composite material) is unacceptable during disassembly. Therefore, a specialized wrench for disassembling mechanical locking bolts and nuts is needed. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a wrench assembly for disassembling mechanical locking bolts and nuts, which can ensure that the sandwich panel is not damaged during the disassembly of mechanical locking bolts and nuts.

[0004] This utility model is achieved through the following technical solution: a wrench assembly for disassembling mechanical locking bolts and nuts, comprising a disassembly wrench and a stop pin;

[0005] The disassembly wrench includes a first handle and a socket. The first end of the first handle is provided with a socket and helical teeth, and the inner wall of the socket is provided with an annular toothed structure.

[0006] The stop pin includes a second handle and an inner rod. The first end of the second handle is provided with a mounting hole, and one end of the inner rod is detachably fixed in the mounting hole.

[0007] Furthermore, the sleeve is riveted to the first handle.

[0008] Furthermore, the first handle is provided with a hook hole.

[0009] Furthermore, the first handle includes a first plate and a second plate, one end of the first plate is connected to one end of the second plate, and the included angle between the first plate and the second plate is an obtuse angle.

[0010] Furthermore, the sleeve includes a plate-like structure with a through hole. The inner wall of the through hole has an annular toothed structure. One side of the plate-like structure has a semi-circular ring structure that is coaxial with and has the same diameter as the through hole. The inner wall of the semi-circular ring structure has a toothed structure that corresponds to the toothed structure on the inner wall of the through hole.

[0011] Furthermore, the side wall of the mounting hole on the second handle is provided with a screw hole that penetrates the side wall, the screw hole is connected to the mounting hole, and a set screw is installed in the screw hole.

[0012] Furthermore, the inner rod has an L-shaped structure.

[0013] Furthermore, the radial cross-section of the inner rod is a regular hexagon.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] (1) The wrench assembly in this utility model can ensure that the sandwich panel is not damaged during the process of disassembling the mechanical locking bolts and nuts;

[0016] (2) The wrench assembly in this utility model adopts single-sided operation, which can disassemble mechanical locking bolts and nuts even in narrow spaces;

[0017] (3) The wrench assembly in this utility model is easy to operate. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 A schematic diagram of a mechanical locking bolt;

[0020] Figure 2 A schematic diagram of a mechanical locking nut;

[0021] Figure 3 A schematic diagram illustrating the use of mechanical bolts and nuts to fix a sandwich panel.

[0022] Figure 4 This is a schematic diagram of one type of disassembly wrench in this utility model;

[0023] Figure 5 This is a side view of the disassembly wrench in this utility model;

[0024] Figure 6 This is a schematic diagram of a stop pin according to the present invention;

[0025] Figure 7 This is a schematic diagram of the wrench assembly in this utility model when disassembling mechanically tightened bolts and nuts;

[0026] Figure 8 This is a schematic diagram of one type of first handle in this utility model;

[0027] Figure 9 This is a schematic diagram of one type of sleeve in this utility model;

[0028] Figure 10 This is a schematic diagram of a second handle in this utility model;

[0029] Figure 11 This is a schematic diagram of one type of inner rod in this utility model;

[0030] In the diagram, 11—mechanical locking bolt, 111—slot, 12—mechanical locking nut, 121—protrusion, 131—first interlayer plate, 132—second interlayer plate, 21—first handle, 211—hook hole, 212—first rivet hole, 22—sleeve, 221—second rivet hole, 23—rivet, 31—second handle, 311—mounting hole, 312—screw hole, 32—inner rod, 33—set screw. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; 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 refer to the internal communication of two components or the interaction between 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.

[0035] like Figures 1 to 11 As shown, this utility model discloses a wrench assembly for disassembling mechanical locking bolts and nuts.

[0036] The mechanical locking bolt and nut include a mechanical locking bolt 11 and a mechanical locking nut 12. For example... Figure 1 As shown, the threaded end of the mechanical locking bolt 11 is provided with a slot 111; as Figure 2 As shown, the outer surface of the mechanical locking nut 12 is provided with a plurality of protrusions 121. For example, three protrusions 121 are evenly arranged around its axis on the outer surface of the mechanical locking nut 12; Figure 3 As shown, the first sandwich plate 131 and the second sandwich plate 132 are fixed together by the cooperation of the mechanical locking nut 12 and the mechanical locking bolt 11.

[0037] A wrench assembly for removing mechanically locked bolts and nuts includes a removal wrench and a stop pin.

[0038] like Figure 4 and Figure 5 As shown, the disassembly wrench includes a first handle 21 and a sleeve 22. The first end of the first handle 21 is provided with a sleeve 22 and helical teeth. The inner wall of the sleeve 22 is provided with an annular toothed structure.

[0039] like Figure 6 As shown, the stop pin includes a second handle 31 and an inner rod 32. The first end of the second handle 31 is provided with a mounting hole 311, and one end of the inner rod 32 is detachably fixed in the mounting hole 311.

[0040] The radial cross-section of the inner rod 32 has the same shape as the radial cross-section of the slot 111 of the mechanical locking bolt 11. For example, if the radial cross-section of the slot 111 of the mechanical locking bolt 11 is a regular hexagon, then the radial cross-section of the inner rod 32 is also a regular hexagon.

[0041] In this embodiment, the stop pin is used to fix the mechanical locking bolt 11 during the disassembly of the mechanical locking bolt 11 nut, preventing the mechanical locking bolt 11 from rotating with the mechanical locking nut 12, so that the force applied by the disassembly wrench can be more effectively converted into the loosening force of the mechanical locking nut 12. Specifically, the other end of the inner rod 32 of the stop pin is inserted into the slot 111 of the mechanical locking bolt 11 to press the stop pin, thereby preventing the mechanical locking bolt 11 from rotating with the mechanical locking nut 12.

[0042] In this embodiment, the disassembly wrench is used to rotate the mechanical locking nut 12 during the disassembly of the mechanical locking bolt 11. Specifically, the sleeve 22 of the disassembly wrench is fitted onto the mechanical locking nut 12, and then the disassembly wrench is rotated. The helical teeth on the first handle 21 and the toothed structure inside the sleeve 22 interact with each other, engaging the protrusion 121 on the mechanical locking nut 12, thereby rotating the mechanical locking nut 12.

[0043] like Figure 7 As shown, the wrench assembly in this embodiment includes a disassembly wrench and a stop pin. During the disassembly of the mechanical locking bolt 11 nut, the inner rod 32 of the stop pin is first inserted into the slot 111 of the threaded end of the mechanical locking bolt 11. Then, the sleeve 22 of the disassembly wrench engages with the deformation area of ​​the protrusion 121 on the outer circle of the mechanical locking nut 12. While the stop pin keeps the mechanical locking bolt 11 from rotating, a counterclockwise rotational torque is applied to the disassembly wrench, causing the mechanical locking nut 12 to rotate counterclockwise. The disassembly process ends when the mechanical locking nut 12 is unscrewed out of the threaded area of ​​the mechanical locking bolt 11.

[0044] In some embodiments of this example, the sleeve 22 is riveted to the first handle 21.

[0045] Specifically, the first handle 21 is provided with a first rivet hole 212 for a rivet 23, and the sleeve 22 is provided with a second rivet hole 221 for a rivet 23 corresponding to the first rivet hole 212 for the rivet 23. Then, the rivet 23 is passed through the first rivet hole 212 and the second rivet hole 221 for the rivet 23 in sequence, thereby riveting the sleeve 22 to the first handle 21.

[0046] In some implementations of this embodiment, such as Figure 8 As shown, the first handle 21 is provided with a hook hole 211. For example, the second end of the first handle 21 is provided with a hook hole 211.

[0047] In these embodiments, the disassembly wrench can be conveniently hung by providing a hook hole 211 on the first handle 21.

[0048] In some embodiments of this example, the first handle 21 includes a first plate and a second plate, one end of the first plate is connected to one end of the second plate, and the included angle between the first plate and the second plate is an obtuse angle.

[0049] The first plate and the second plate are integrally formed.

[0050] In these embodiments, by setting the included angle between the first plate and the second plate to an obtuse angle, it can play a role in avoiding damage to the sandwich panel when disassembling the mechanical locking bolt 11 nut.

[0051] The sleeve 22 is disposed on the first plate, the first plate is provided with helical teeth, and the hook hole 211 is disposed on the second plate.

[0052] In some embodiments of this example, the first handle 21 is elongated and flat.

[0053] In some implementations of this embodiment, such as Figure 9 As shown, the sleeve 22 includes a plate-like structure with a through hole. The inner wall of the through hole has an annular toothed structure. One side of the plate-like structure has a semi-circular ring structure that is coaxial with the through hole and has the same diameter. The inner wall of the semi-circular ring structure has a toothed structure corresponding to the through hole.

[0054] The side of the plate-like structure with the semi-circular ring structure faces the first handle 21.

[0055] In some embodiments of this example, the first handle 21 and the sleeve 22 are made of high-hardness mold steel, and the rivet 23 is made of high-strength stainless steel.

[0056] In some implementations of this embodiment, such as Figure 10 As shown, the side wall of the mounting hole 311 on the second handle 31 is provided with a screw hole 312 that passes through the side wall radially along the mounting hole 311, and a set screw 33 is installed in the screw hole 312.

[0057] In these embodiments, the inner rod 32 is detachably fixed in the mounting hole 311 by the set screw 33, so that the inner rod 32 can be quickly replaced and the stop pin can be easily repaired.

[0058] In some implementations of this embodiment, such as Figure 11 As shown, the inner rod 32 has an L-shaped structure.

[0059] In some embodiments of this example, the radial cross-section of the inner rod 32 is a regular hexagon.

[0060] In some embodiments of this example, the inner rod 32 is made of impact-resistant tool steel, with sufficient surface hardness and a certain degree of toughness inside.

[0061] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A wrench assembly for disassembling mechanically tightened bolts and nuts, characterized in that, This includes the disassembly wrench and the stop pin; The disassembly wrench includes a first handle and a socket. The first end of the first handle is provided with a socket and helical teeth, and the inner wall of the socket is provided with an annular toothed structure. The stop pin includes a second handle and an inner rod. The first end of the second handle is provided with a mounting hole, and one end of the inner rod is detachably fixed in the mounting hole.

2. A wrench assembly for disassembling mechanical locking bolts and nuts according to claim 1, characterized in that, The sleeve is riveted to the first handle.

3. A wrench assembly for disassembling mechanical locking bolts and nuts according to claim 1, characterized in that, The first handle is provided with a hook hole.

4. A wrench assembly for disassembling mechanical locking bolts and nuts according to claim 1, characterized in that, The first handle includes a first plate and a second plate, one end of the first plate is connected to one end of the second plate, and the included angle between the first plate and the second plate is an obtuse angle.

5. A wrench assembly for disassembling mechanical locking bolts and nuts according to claim 1, characterized in that, The sleeve includes a plate-like structure with a through hole. The inner wall of the through hole has an annular toothed structure. One side of the plate-like structure has a semi-circular ring structure that is coaxial with the through hole and has the same diameter. The inner wall of the semi-circular ring structure has a toothed structure that corresponds to the toothed structure on the inner wall of the through hole.

6. A wrench assembly for disassembling mechanical locking bolts and nuts according to claim 1, characterized in that, The second handle has a screw hole through the side wall of the mounting hole, the screw hole is connected to the mounting hole, and a set screw is installed in the screw hole.

7. A wrench assembly for disassembling mechanical locking bolts and nuts according to claim 1, characterized in that, The inner rod has an L-shaped structure.

8. A wrench assembly for disassembling mechanical locking bolts and nuts according to claim 1, characterized in that, The radial cross-section of the inner rod is a regular hexagon.

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