A special tool for tightening the locking nut of a swing hinge.

Abstract

This utility model relates to a special tool for tightening the locking nut of a flapping hinge, belonging to the field of unmanned helicopter assembly tool technology. It solves the technical problem in the prior art where relative slippage easily occurs between the tool and the locking nut due to incompatibility. The special tool includes a first mating section, a second mating section, and an operating clamp. The first mating section is fixedly connected to the second mating section and is detachably mounted on the operating clamp. The second mating section can be inserted into an auxiliary mounting hole. Tightening the operating clamp allows the flapping hinge locking nut to be tightened. By manually tightening the operating clamp, the rotational force is sequentially transmitted and ultimately applied to the flapping hinge locking nut, achieving the tightening operation. With the help of the first mating section, the second mating section, and the auxiliary mounting hole, the operating clamp no longer slides relative to the flapping hinge locking nut, allowing the force applied by the operator to be effectively converted into torque on the flapping hinge locking nut.

Description

Technical Field

[0001] This utility model relates to the field of assembly tools for unmanned helicopters, and in particular to a special tool for tightening the locking nut of the swing hinge. Background Technology

[0002] Currently, unmanned helicopters are widely used in many fields such as environmental monitoring and logistics transportation. In the complex assembly process of unmanned helicopters, the tightening of the flapping hinge locking nut is crucial, as it directly affects the stability and reliability of the flapping hinge structure during helicopter flight, and thus impacts the overall flight safety of the aircraft.

[0003] Currently, when tightening locking nuts with swing-arm pliers, general-purpose tools such as needle-nose pliers and spring pliers are mainly relied upon. However, the locking nuts used with swing-arm pliers have a unique structure with an inclined end face. These tools were not originally designed for this type of special nut. The shape, size, and direction of force applied by these tools cannot form a good contact and fit with the surface of the locking nut. This results in a poor point of force application during the tightening process, and relative slippage easily occurs between the tool and the nut, making it impossible to effectively convert the force applied by the operator into torque on the nut.

[0004] Even with great effort, operators often struggle to tighten the nuts to the specified torque, resulting in low assembly efficiency and a high risk of scratches on the nut surface and damage to the threads due to repeated tightening attempts. Utility Model Content

[0005] In view of the above analysis, the present invention aims to provide a special tool for tightening a swing hinge locking nut, so as to solve one of the following technical problems existing in the prior art: the incompatibility between the existing tool and the locking nut, which leads to the problem of relative slippage between the tool and the nut; and the problem of wear between the existing tool and the mounting auxiliary hole.

[0006] The objective of this utility model is mainly achieved through the following technical solutions:

[0007] A special tool is provided for tightening a swing hinge locking nut. The swing hinge locking nut has an installation auxiliary hole. The special tool includes a first mating section, a second mating section, and an operating clamp. One end of the first mating section is fixedly connected to the second mating section, and the other end of the first mating section is detachably mounted on the operating clamp. The second mating section can be inserted into the installation auxiliary hole. The swing hinge locking nut can be tightened by tightening the operating clamp.

[0008] Furthermore, the second mating section and the mounting auxiliary hole are clearance fits.

[0009] Furthermore, the surface of the first mating section is provided with threads, and the operating clamp is provided with a threaded groove, the threads being able to engage with the threaded groove.

[0010] Furthermore, after the second mating section is inserted into the mounting auxiliary hole, the first mating section protrudes beyond the end face of the swing hinge locking nut.

[0011] Furthermore, the second mating section is a column with a polygonal cross-section.

[0012] Furthermore, the second mating section is a cylinder with a circular or elliptical cross-section.

[0013] Furthermore, the first mating section is fixedly connected to the second mating section by a snap-fit ​​mechanism.

[0014] Furthermore, the operating clamp includes a first clamp body, a second clamp body, and a pivot, wherein both the first clamp body and the second clamp body are rotatably mounted on the pivot.

[0015] Furthermore, both the first clamp and the second clamp include a gripping part, a rotating part, and a clamping part connected in sequence.

[0016] Furthermore, the first mating section is detachably disposed on the clamping part.

[0017] The technical solution of this utility model can achieve at least one of the following effects:

[0018] (1) The special tool for turning the swing hinge locking nut described in this utility model has an operating pliers as the power source. The operator manually turns the operating pliers to transmit the rotational force to the first mating section and the second mating section in sequence, which is finally applied to the swing hinge locking nut to realize the turning operation of the locking nut. With the help of the first mating section, the second mating section and the installation auxiliary hole, the operating pliers no longer slide relative to the swing hinge locking nut. The operating pliers can maintain a stable contact state, so that the force applied by the operator can be effectively converted into torque on the swing hinge locking nut.

[0019] (2) The special tool for tightening the swing hinge locking nut described in this utility model, when the operating pliers are connected to the mounting auxiliary hole through the first and second mating sections for operation, the buffer sleeve can buffer the vibration and impact generated during the operation. This can not only avoid damage to the mounting auxiliary hole and surrounding structure due to excessive impact, but also reduce damage to the operating pliers themselves. The buffer sleeve increases the friction between the second mating section and the mounting auxiliary hole or related contact parts, preventing slippage during operation. The buffering and shock absorption effect reduces the safety risks caused by vibration and impact during operation. At the same time, the anti-slip effect ensures the stable connection between the operating pliers and the mounting auxiliary hole, making the whole operation process more stable and safe, and reducing the occurrence of accidents.

[0020] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0021] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0022] Figure 1 This is a schematic diagram of the structure of the first mating section and the second mating section in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the operating pliers in an embodiment of this utility model;

[0024] Figure 3 This is a cross-sectional view of the second mating section inserted into the installation auxiliary hole in an embodiment of this utility model;

[0025] Figure 4 This is a cross-sectional schematic diagram of the swing hinge locking nut in an embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the buffer sleeve in an embodiment of this utility model.

[0027] Figure label:

[0028] 11-First mating section, 12-Second mating section, 121-Buffer sleeve, 1211-Transverse buffer strip, 1212-Longitudinal buffer strip, 1213-Bottom buffer strip, 2-Operating clamp, 21-First clamp body, 22-Second clamp body, 23-Pivot, 201-Hand grip, 202-Rotating part, 203-Clamping part, 3-Waving hinge locking nut, 31-Mounting auxiliary hole. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0030] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0031] Example 1

[0032] like Figure 1 , Figure 2 and Figure 4 As shown, Embodiment 1 of this utility model provides a special tool for tightening a swing hinge locking nut, which solves the problem of relative slippage between the tool and the nut due to the incompatibility between existing tools and locking nuts. The swing hinge locking nut 3 is provided with an auxiliary mounting hole 31. The special tool includes a first mating section 11, a second mating section 12, and an operating clamp 2. One end of the first mating section 11 is fixedly connected to the second mating section 12, and the other end of the first mating section 11 is detachably mounted on the operating clamp 2. The second mating section 12 can be inserted into the auxiliary mounting hole 31. The swing hinge locking nut 3 can be tightened by tightening the operating clamp 2.

[0033] The flapping hinge locking nut 3 is the target object operated by the special tool. Its function is to lock the flapping hinge of the helicopter, ensuring its stability and reliability during operation. Currently, the flapping hinge locking nut 3 has an inclined end face. An auxiliary mounting hole 31 is formed on the end face of the flapping hinge locking nut 3, providing space for the insertion of the second mating section 12. This is the structure that connects the special tool and the locking nut. The first mating section 11 is fixedly connected to the second mating section 12, forming an integral structure with itself. It is also detachably mounted on the operating pliers 2, connecting the special tool and the operating pliers 2. This allows the operating pliers 2 to transmit tightening power to the second mating section 12 through the first mating section 11. The second mating section 12 can be inserted into the auxiliary mounting hole 31 on the flapping hinge locking nut 3 and forms a mating relationship with it. This mating relationship ensures that the second mating section 12... The hole allows for stable operation while also enabling relatively flexible rotation, allowing the swing hinge locking nut 3 to rotate together with the pliers 2. The pliers 2 serve as the power source for the special tool. By manually turning the pliers 2, the operator transmits the rotational force sequentially to the first mating section 11 and the second mating section 12, ultimately acting on the swing hinge locking nut 3 to achieve the tightening operation. Furthermore, the pliers 2 has a certain length, allowing the operator to tighten the locking nut with less effort based on the lever principle. Thus, the rotational force applied by the pliers 2 can be applied to the swing hinge locking nut 3 again through the first mating section 11 and the second mating section 12. With the help of the first mating section 11, the second mating section 12, and the mounting auxiliary hole 31, the pliers 2 no longer slides relative to the swing hinge locking nut 3, maintaining a stable contact state. This ensures that the force applied by the operator is effectively converted into torque on the swing hinge locking nut 3.

[0034] The operating clamp 2 no longer slides relative to the swing hinge locking nut 3. The operating clamp 2 can maintain a stable contact state, which allows the operator to accurately control the operating clamp 2. This reduces the possibility of the operating clamp 2 sliding relative to the swing hinge locking nut 3 due to poor force points, improves the efficiency and accuracy of the tightening operation, and reduces the risk of damage to the surface of the locking nut due to improper operation.

[0035] Furthermore, the second mating section 12 and the mounting auxiliary hole 31 are clearance fits.

[0036] The second mating section 12 and the mounting auxiliary hole 31 adopt a clearance fit. During assembly, there is a certain amount of space between the second mating section 12 and the mounting auxiliary hole 31, which makes it easy for the second mating section 12 to be guided and inserted into the mounting auxiliary hole 31, achieving rapid positioning, reducing assembly difficulty and error rate. At the same time, the clearance can absorb the dimensional deviation of the parts, avoiding assembly jamming or damage due to dimensional mismatch. The clearance fit improves assembly efficiency and quality, reduces the defect rate caused by improper assembly, and lowers manufacturing costs.

[0037] Furthermore, such as Figure 1 The first mating section 11 has a threaded surface, and the operating clamp 2 has a threaded groove, which can be mated with the threaded groove.

[0038] During assembly, this threaded fit structure can play a role in precise positioning, guiding the first fitting section 11 to be accurately inserted into the designated position of the operating clamp 2, avoiding assembly deviation. At the same time, the threaded fit can also achieve effective force transmission, accurately transmitting the torque applied by the operator to the operating clamp 2 to the first fitting section 11.

[0039] Furthermore, such as Figure 3 As shown, after the second mating section 12 is inserted into the installation auxiliary hole 31, the first mating section 11 protrudes beyond the end face of the swing hinge locking nut 3.

[0040] During the assembly process, the prominent first mating section 11 provides a clear point of leverage for the operating tools, allowing operators to quickly locate and accurately clamp them for tightening or loosening operations. It provides a clear and easily accessible point of leverage for the operating tools (such as wrenches, sockets, etc.). The prominent design ensures that there is sufficient space around the first mating section 11 for the operating tools to move around. Since the operating tools can be quickly located and torque can be applied smoothly, the time for the entire assembly or disassembly process can be shortened. At the same time, the clear point of leverage and sufficient operating space reduce the difficulty of operation.

[0041] Furthermore, the second mating segment 12 is a column with a polygonal cross-section.

[0042] The second mating section 12 adopts a polygonal column, which can be accurately positioned during assembly, prevent relative rotation with the installation auxiliary hole during operation, and evenly distribute torque stress for accurate force transmission, thereby improving the motion accuracy and reliability of the equipment.

[0043] Furthermore, the first mating section 11 is fixedly connected to the second mating section 12 by means of a snap or magnetic attraction.

[0044] The snap-fit ​​mechanism allows for quick engagement and disengagement, achieving reliable mechanical locking and precise positioning; the magnetic attraction enables automatic adsorption and alignment, providing contactless connection and shock absorption. Both mechanisms facilitate separation and reconnection, meeting the needs of different assembly scenarios and ensuring stable and accurate connections. By employing snap-fit ​​or magnetic connection methods, the reliability and stability of the equipment are enhanced, and vibration and noise during operation are reduced.

[0045] Furthermore, such as Figure 2 As shown, the operating clamp 2 includes a first clamp body 21, a second clamp body 22 and a pivot 23, and both the first clamp body 21 and the second clamp body 22 are rotatably mounted on the pivot 23.

[0046] The first clamp 21 and the second clamp 22 rotate around the pivot 23, which can flexibly change the size of their openings and their relative positions. The pivot provides stable support for the rotation, ensuring the stability of the operating clamp 2 structure.

[0047] Based on this, such as Figure 2 As shown, both the first clamp body 21 and the second clamp body 22 include a gripping part 201, a rotating part 202 and a clamping part 203 connected in sequence.

[0048] The grip 201 allows the operator to easily grasp and apply force, the rotating part 202 rotates around the pivot to open and close the clamp, and the clamping part 203 directly contacts the object.

[0049] Based on this, the first mating section 11 is detachably mounted on the clamping part 203. Through the clamping part 203 of the first clamping body 21 and the second clamping body 22, the torque of the first mating section 11 can be applied to any two mounting auxiliary holes 31 by connecting with the second mating section 12, which improves the flexibility of the tightening process.

[0050] Example 2

[0051] Embodiment 2 of this utility model is a further improvement based on Embodiment 1, aiming to solve the problem of wear between the second mating section 12 and the mounting auxiliary hole 31, such as... Figure 5 As shown, the second mating section 12 is covered with a buffer sleeve 121, which can be made of rubber.

[0052] When the operating clamp 2 operates on the mounting auxiliary hole 31 through the first mating section 11 and the second mating section 12, the buffer sleeve 121 can buffer the vibration and impact generated during the operation. This can not only avoid damage to the mounting auxiliary hole 31 and surrounding structures due to excessive impact, but also reduce damage to the operating clamp 2 itself. The buffer sleeve 121 increases the friction between the second mating section 12 and the mounting auxiliary hole 31 or related contact parts, preventing slippage during operation. The buffering and shock absorption effect reduces the safety risks caused by vibration and impact during operation. At the same time, the anti-slip effect ensures the stable connection between the operating clamp 2 and the mounting auxiliary hole 31, making the entire operation process smoother and safer, and reducing the occurrence of accidents.

[0053] Furthermore, such as Figure 5 As shown, the buffer sleeve 121 includes a transverse buffer strip 1211, a longitudinal buffer strip 1212 and a bottom buffer strip 1213 embedded in the second mating section 12. The transverse buffer strip 1211 and the longitudinal buffer strip 1212 abut against the side wall of the mounting auxiliary hole 31, and the bottom buffer strip 1213 abuts against the bottom wall of the mounting auxiliary hole 31.

[0054] The transverse buffer strip 1211 is embedded in the second mating section 12. During operation, it abuts against the side wall of the installation auxiliary hole 31 to buffer the transverse impact force and prevent the second mating section 12 from colliding hard with the side wall of the hole. The longitudinal buffer strip 1212 is also embedded in the second mating section 12, abutting against the side wall of the hole to buffer the longitudinal force and prevent longitudinal shaking and damage. The bottom buffer strip 1213 is embedded at the bottom of the second mating section 12, abutting against the bottom wall of the installation auxiliary hole 31 to buffer the downward impact force and prevent damage to the bottom. The three work together to provide all-round protection for the installation auxiliary hole 31 and the second mating section 12. Through the three-way buffer strips, the forces generated in various directions during operation are effectively dispersed, reducing the risk of damage to the installation auxiliary hole 31 and the second mating section 12 due to concentrated force, extending their service life. At the same time, the buffering effect makes the operation more stable, reduces operational errors caused by vibration and impact, improves operational accuracy and stability, ensures work quality and safety, and improves overall work efficiency.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special tool for screwing a flapping hinge locking nut, the flapping hinge locking nut (3) being provided with an installation auxiliary hole (31), characterized in that, The special tool includes a first mating section (11), a second mating section (12), and an operating clamp (2); one end of the first mating section (11) is fixedly connected to the second mating section (12), and the other end of the first mating section (11) is detachably mounted on the operating clamp (2); the second mating section (12) can be inserted into the mounting auxiliary hole (31); and the swing hinge locking nut (3) can be turned by turning the operating clamp (2).

2. The special tool for tightening the swing hinge locking nut according to claim 1, characterized in that, The second mating section (12) and the mounting auxiliary hole (31) are clearance fit.

3. The special tool for tightening the swing hinge locking nut according to claim 1, characterized in that, The surface of the first mating section (11) is provided with threads, and the operating clamp (2) is provided with a threaded groove, the threads being able to engage with the threaded groove.

4. The special tool for tightening the swing hinge locking nut according to claim 1, characterized in that, After the second mating section (12) is inserted into the mounting auxiliary hole (31), the first mating section (11) protrudes beyond the end face of the swing hinge locking nut (3).

5. The special tool for tightening the swing hinge locking nut according to claim 1, characterized in that, The second mating section (12) is a column with a polygonal cross-section.

6. The special tool for tightening the swing hinge locking nut according to claim 1, characterized in that, The second mating section (12) is a cylinder with a circular or elliptical cross-section.

7. The special tool for tightening the swing hinge locking nut according to claim 1, characterized in that, The first mating section (11) is fixedly connected to the second mating section (12) by a snap-fit ​​method.

8. The special tool for tightening the swing hinge locking nut according to claim 1, characterized in that, The operating clamp (2) includes a first clamp body (21), a second clamp body (22), and a pivot (23), wherein the first clamp body (21) and the second clamp body (22) are rotatably mounted on the pivot (23).

9. The special tool for tightening the swing hinge locking nut according to claim 8, characterized in that, Both the first clamp body (21) and the second clamp body (22) include a gripping part (201), a rotating part (202) and a clamping part (203) connected in sequence.

10. The special tool for tightening the swing hinge locking nut according to claim 9, characterized in that, The first mating section (11) is detachably disposed on the clamping part (203).

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