Auxiliary tool for aircraft safety pin

Abstract

The utility model relates to the technical field of airplane auxiliary equipment, and discloses an auxiliary tool for an airplane safety pin, which comprises an unlocking retaining device and a support rod which are detachably connected, the unlocking retaining device comprises a base, a limiting fork frame and an unlocking top block, the limiting fork frame and the unlocking top block are fixed to the top face of the base, the unlocking top block is arranged in the middle of the base, the limiting fork frame comprises two limiting columns arranged on the side edges of the base, a limiting groove used for containing the safety pin is formed between the two limiting columns, and the face, facing the limiting columns, of the unlocking top block is provided with a first abutting inclined face; the supporting rod is connected with the bottom face of the base and used for adjusting the position of the unlocking maintaining device. The effect that the safety pin can be rapidly disassembled and assembled without structures such as a ladder assembly is achieved through a simple structure, the disassembling and assembling efficiency of the safety pin is effectively improved, the manpower requirement of the work is reduced, the risk that personnel fall off and collide an airplane is avoided, and the disassembling and assembling process of the safety pin is safer and more convenient.

Description

Technical Field

[0001] The utility model relates to the field of aircraft auxiliary equipment, in particular to an auxiliary tool for aircraft safety pins. Background Art

[0002] In the civil aviation field, medium and large aircraft use retractable landing gear to reduce flight resistance and increase flight speed. In order to prevent the aircraft from accidentally retracting the landing gear during ground maintenance, the landing gear safety pin is required to be installed when the aircraft is parked or towed on the ground. The landing gear safety pin is a pin with a self-locking device. After pressing the unlock button at the end, the lock bead at the other end will retract into the inside of the pin. At this time, the pin can be inserted into the landing gear lowering lock mechanism socket, and then release the unlock button, the lock bead will pop out, thereby restricting the landing gear safety pin from being pulled out and preventing it from accidentally coming out.

[0003] In the existing technology, when disassembling and assembling the landing gear safety pin, workers often need to climb the landing gear or use a ladder to approach the socket. After climbing to the position where the safety pin can be touched, the workers can perform manual disassembly and assembly operations. However, as the aircraft becomes larger, the landing gear structure also becomes larger, and the position of the landing gear lowering lock mechanism socket is getting higher and higher. Taking the Airbus A330 as an example, the position of the main landing gear lowering lock mechanism socket is as high as 3.5 meters from the ground. When disassembling and assembling the landing gear safety pin, workers need to climb the landing gear or use a ladder to approach the socket, which brings great safety hazards. There is a risk of people falling when using the climbing landing gear method. When using a ladder to approach, a ladder of appropriate height is required. In addition, using a ladder in a complex area on the belly of the aircraft is easy to damage the aircraft. It requires multiple people to cooperate in moving the ladder, which is time-consuming and laborious. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to disassemble and assemble the aircraft safety pin more safely and conveniently. In order to solve the above technical problem, the utility model provides an auxiliary tool for the aircraft safety pin, including a detachably connected unlocking and holding device and a support rod;

[0005] The unlocking and holding device comprises a base, a limiting fork frame and an unlocking top block fixed to the top surface of the base, the unlocking top block is arranged in the middle of the base, the limiting fork frame comprises two limiting columns arranged on the side of the base, a limiting groove for accommodating a safety pin is arranged between the two limiting columns, and a first abutting inclined surface is arranged on a side of the unlocking top block facing the limiting column;

[0006] The support rod is connected to the bottom surface of the base, and the support rod is used to adjust the position of the unlocking and holding device.

[0007] Preferably, a mounting groove is provided on the top surface of the base at a side of the limiting fork frame away from the unlocking top block, and a locking device for locking the safety pin is movably connected in the mounting groove.

[0008] Preferably, the locking device comprises two locking clamps arranged opposite to each other, the bottom ends of the locking clamps are arranged in the mounting grooves and are movably connected to the base; arc-shaped clamping grooves are arranged on the opposite sides of the two locking clamps, and the two clamping grooves are combined to clamp and limit the safety pin;

[0009] The locking device also includes a reset device, which is used to drive the two locking clamps to move toward each other and reset to clamp the safety pin.

[0010] Preferably, the resetting device comprises a torsion spring, a tension spring or a compression spring.

[0011] Preferably, the limiting fork frame is provided on each side of the unlocking top block, and two first abutting inclined surfaces are provided corresponding to the limiting fork frames.

[0012] Preferably, the limiting column is provided with a second abutting inclined surface on the side facing the unlocking top block.

[0013] Preferably, the support rod comprises a multi-section telescopic rod or a multi-section combined rod.

[0014] Preferably, a threaded hole is provided in the middle of the bottom surface of the base, and the top end of the support rod is threadedly connected to the base.

[0015] Preferably, the unlocking and holding device is made of a corrosion-resistant metal alloy, and the support rod is made of a lightweight carbon material.

[0016] Compared with the prior art, the auxiliary tool for aircraft safety pins provided in the embodiment of the utility model has the following beneficial effects:

[0017] The safety pin is then released from the locking mechanism and the locking bead is retracted to release the locking bead from the locking mechanism, thereby releasing the locking bead from the locking mechanism and allowing the locking bead to be released from the locking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the utility model;

[0019] Figure 2 It is a structural view of the unlocking and holding device of the utility model;

[0020] Figure 3 It is another structural schematic diagram of the unlocking and holding device of the utility model.

[0021] In the figure: 1, unlocking holding device; 11, base; 111, mounting groove; 112, threaded hole; 12, limiting fork frame; 121, limiting column; 1211, second abutting inclined surface; 122, limiting groove; 13, unlocking top block; 131, first abutting inclined surface; 14, locking device; 141, locking clamping plate; 142, clamping groove;

[0022] 2. Support rod;

[0023] 3. Safety pin. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the preferred embodiment of the utility model provides an auxiliary tool for an aircraft safety pin, which includes a detachably connected unlocking and holding device 1 and a support rod 2;

[0026] The unlocking and holding device 1 comprises a base 11, a limiting fork frame 12 and an unlocking top block 13 fixed to the top surface of the base 11, the unlocking top block 13 is arranged in the middle of the base 11, the limiting fork frame 12 comprises two limiting columns 121 arranged on the side of the base 11, a limiting groove 122 for accommodating the safety pin 3 is arranged between the two limiting columns 121, and a first abutting inclined surface 131 is arranged on a side of the unlocking top block 13 facing the limiting column 121;

[0027] The support rod 2 is connected to the bottom surface of the base 11 , and the support rod is used to adjust the position of the unlocking and holding device 1 .

[0028] Specifically, in the previous installation process of the safety pin 3, the staff needs to climb up to manually press the unlocking button at the end of the safety pin 3 and insert the safety pin 3 into the corresponding socket to complete the installation. The disassembly process also requires climbing up to complete the disassembly operation, which is not only inefficient, time-consuming and labor-intensive, but also involves various dangers. In the present embodiment, when the safety pin 3 needs to be installed, the safety pin 3 can be inserted into the limiting groove 122 on the ground in advance, so that the unlocking button on the safety pin 3 abuts against the first abutting slope 131 on the unlocking top block 13, and then the safety pin 3 is pressed downward, so that the contact button is always in a pressed state under the action of the first abutting slope 131, and the locking bead at the other end of the safety pin 3 is kept in the unlocked state, and then the height of the safety pin 3 is adjusted to match the height of the corresponding socket through the support rod 2, and then the safety pin 3 is moved horizontally into the socket, and then the unlocking holding device 1 is pulled downward to disengage the safety pin 3 from the limiting groove 122, and the unlocking button at the end of the safety pin 3 is no longer squeezed by the first abutting slope 131 and begins to reset, and the locking bead at the other end of the safety pin 3 pops out, thereby achieving locking; the removal process of the safety pin 3 is to implement the above process in reverse. In the utility model, by cooperating with the support rod 2 and the unlocking and retaining device 1, the staff can accurately insert the safety pin 3 into the socket on the ground, avoiding the danger and trouble of the staff climbing up and down, and improving the efficiency of safe disassembly and assembly, making the disassembly and assembly of the safety pin 3 more convenient and safer.

[0029] In some embodiments, a mounting groove 111 is provided on the top surface of the base 11 at a side of the limiting fork frame away from the unlocking top block 13 , and a locking device 14 for locking the safety pin 3 is movably connected in the mounting groove 111 .

[0030] Specifically, in the previous embodiment, after the safety pin 3 is pressed into the limiting groove 122, although the safety pin 3 can be well stuck in the limiting groove 122 under the action of gravity, the force of resetting the unlocking button will also have an adverse effect on the stability of the safety pin 3 in the limiting groove 122. Therefore, an additional locking device 14 is provided to better limit the installation groove 111 in the limiting groove 122, thereby ensuring the stability of the safety pin 3 during the disassembly and assembly process.

[0031] In some embodiments, the locking device includes two locking clamps 141 arranged opposite to each other, the bottom ends of the locking clamps 141 are arranged in the mounting groove 111 and are movably connected to the base 11; arc-shaped clamping grooves 142 are arranged on the opposite sides of the two locking clamps 141, and the two clamping grooves 142 are combined to clamp the limit safety pin 3;

[0032] The locking device also includes a reset device, which is used to drive the two locking clamps 141 to move toward each other and reset to clamp the safety pin 3.

[0033] Specifically, when the safety pin 3 is pressed into the limiting groove 122, the safety pin 3 will push the two oppositely arranged locking clamps 141 apart, and then the safety pin 3 enters the area between the two clamping grooves 142 and no longer squeezes the locking clamps 141, and then the locking clamps 141 begin to move toward each other and reset under the action of the reset device, so that the clamping groove 142 and the safety pin 3 are in stable contact and the safety pin 3 is limited and clamped, ensuring the stability of the safety pin 3 during the disassembly process. Furthermore, the inner wall of the clamping groove 142 can be provided with a wear-resistant layer to increase the friction between the locking clamp 141 and the safety pin 3, thereby further improving the stability of the safety pin 3 during the disassembly process.

[0034] In some embodiments, the reset device includes a torsion spring, a tension spring, or a compression spring.

[0035] Specifically, when the side wall of the installation groove 111 is provided with an installation hole, and the bottom end of the locking clamp 141 is rotatably connected to the base 11, a torsion spring is provided at the rotation connection. After the two locking clamps 141 are separated by the safety pin 3, the torsion spring is in a stressed state, and when the safety pin 3 enters the clamping groove 142, the torsion spring drives the two locking clamps 141 to rotate toward each other, thereby realizing the limited locking of the safety pin 3. When the two locking clamps 141 are slidably connected to the base 11, a sliding groove is provided on the inner side wall or bottom surface of the installation groove 111, and a slider is provided on the locking clamp 141 corresponding to the sliding groove, and a tension spring or a compression spring is provided in the sliding groove. When the locking clamp 141 is separated, the tension spring or the compression spring is in a stressed state, and the safety pin 3 enters the clamping groove 142, and the tension spring or the compression spring drives the locking clamp 141 to reset. Furthermore, a tension spring or a compression spring or other structure may be provided between the bottoms of the two locking clamps 141 to achieve a technical solution in which the locking clamps 141 move toward each other when they are reset after being separated.

[0036] In some embodiments, a limiting fork frame 12 is provided on each side of the unlocking top block 13 , and two first abutting inclined surfaces 131 are provided corresponding to the limiting fork frames 12 .

[0037] Specifically, two limiting fork frames 12 are provided, so that the tool does not need to distinguish and adjust the direction when in use, and the safety pin 3 can be disassembled and installed on both sides, further improving the disassembly and installation efficiency of the safety pin 3.

[0038] In some embodiments, the limiting column 121 is provided with a second abutting inclined surface 1211 on the side facing the unlocking top block 13 .

[0039] Specifically, the second abutment slope 1211 can make the pressing process of the safety pin 3 smoother and can guide the downward movement of the safety pin 3.

[0040] In some embodiments, the support rod 2 includes a multi-section telescopic rod or a multi-section combined rod. The use of the telescopic rod or the combined rod enables the support rod 2 to meet the use requirements of the safety pin 3 at various installation heights, thereby increasing the scope of application.

[0041] In some embodiments, a threaded hole 112 is provided in the middle of the bottom surface of the base 11, and the top end of the support rod 2 is threadedly connected to the base 11. The threaded connection allows the support rod 2 to be adapted to install unlocking and holding devices 1 of different sizes, and when there is a problem with the unlocking and holding device 1, it can be quickly replaced without affecting the use; in other embodiments, the support rod 2 and the unlocking and holding device 1 can also be connected by other quick-release structures such as buckles.

[0042] In some embodiments, the unlocking and holding device 1 is made of a corrosion-resistant metal alloy, and the support rod 2 is made of a lightweight carbon material. The unlocking and holding device 1 is made of a rotating metal alloy material to ensure the strength for use at any time, and the support rod 2 is made of a carbon material to reduce the weight of the overall structure, making it lighter to use.

[0043] In summary, the embodiment of the utility model provides an auxiliary tool for the safety pin 3 of an aircraft. When the safety pin 3 needs to be installed, the safety pin 3 can be inserted into the limiting groove 122 on the ground in advance, so that the unlocking button on the safety pin 3 abuts against the first abutting inclined surface 131 on the unlocking top block 13, and then the safety pin 3 is pressed downward, so that the contact button is always in a pressed state under the action of the first abutting inclined surface 131. At this time, the locking bead at the other end of the safety pin 3 is also kept in the unlocked state, and then the height of the safety pin 3 is adjusted to match the height of the corresponding insertion hole through the support rod 2, and then the safety pin 3 is moved horizontally to the insertion hole. The unlocking and holding device 1 is then pulled downward to disengage the safety pin 3 from the limiting groove 122, and the unlocking button at the end of the safety pin 3 is no longer squeezed by the first abutting inclined surface 131 and begins to reset, and the locking bead at the other end of the safety pin 3 pops out, thereby achieving locking; the disassembly process of the safety pin 3 is to implement the above process in reverse; through the support rod 2 cooperating with the unlocking and holding device 1, the staff can accurately insert the safety pin 3 into the socket on the ground, avoiding the danger and trouble of the staff climbing up and down, and improving the efficiency of safe disassembly and assembly, making the disassembly and assembly of the safety pin 3 more convenient and safer.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An auxiliary tool for an aircraft safety pin, characterized in that: including a detachably connected unlocking retaining device and a support rod; The unlocking and holding device comprises a base, a limiting fork frame and an unlocking top block fixed to the top surface of the base, the unlocking top block is arranged in the middle of the base, the limiting fork frame comprises two limiting columns arranged on the side of the base, a limiting groove for accommodating a safety pin is arranged between the two limiting columns, and a first abutting inclined surface is arranged on a side of the unlocking top block facing the limiting column; The support rod is connected to the bottom surface of the base, and the support rod is used to adjust the position of the unlocking and holding device.

2. The aircraft safety pin auxiliary tool according to claim 1, characterized in that: The top surface of the base is provided with a mounting groove on a side of the limiting fork frame away from the unlocking top block, and a locking device for locking the safety pin is movably connected in the mounting groove.

3. The auxiliary tool for aircraft safety pin according to claim 2, characterized in that: The locking device comprises two locking clamps arranged opposite to each other, the bottom ends of the locking clamps are arranged in the mounting grooves and are movably connected to the base; arc-shaped clamping grooves are arranged on the opposite sides of the two locking clamps, and the two clamping grooves are combined to clamp and limit the safety pin; The locking device also includes a reset device, which is used to drive the two locking clamps to move toward each other and reset to clamp the safety pin.

4. The aircraft safety pin auxiliary tool according to claim 3, characterized in that: The reset device comprises a torsion spring, a tension spring or a compression spring.

5. The aircraft safety pin auxiliary tool according to claim 1, characterized in that: The limiting fork frame is respectively provided on both sides of the unlocking top block, and two first abutting inclined surfaces are provided corresponding to the limiting fork frames.

6. The aircraft safety pin auxiliary tool according to claim 1, characterized in that: The limiting column is provided with a second abutting inclined surface on the side facing the unlocking top block.

7. The aircraft safety pin auxiliary tool according to claim 1, characterized in that: The support rod comprises a multi-section telescopic rod or a multi-section combined rod.

8. The aircraft safety pin auxiliary tool according to claim 1, characterized in that: A threaded hole is provided in the middle of the bottom surface of the base, and the top end of the support rod is threadedly connected to the base.

9. The aircraft safety pin auxiliary tool according to claim 1, characterized in that: The unlocking and holding device is made of a corrosion-resistant metal alloy, and the support rod is made of a lightweight carbon material.

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