Integrated undercarriage safety pin

Abstract

The utility model belongs to the technical field of aircraft guarantee devices, and provides an integrated undercarriage safety pin which comprises a main pin body, a first handle is arranged at one end of the main pin body, a second handle and a positioning pin are arranged at the other end of the main pin body, and a claw portion of the main pin body is inserted into a pin hole of the first handle. And the other claw part of the positioning pin is tightly pressed outside the first handle to lock the positioning pin on the first handle. Due to the design of the main pin body, the first handle and the second handle, operation is more convenient, and safety and reliability are improved. The size of a pin hole of the first handle is smaller than that of a pin hole of the second handle, the risks of misoperation and mixed use are effectively prevented, correct use of the undercarriage safety pin is ensured, the positioning pin is locked through matching of the positioning pin and the pin hole of the first handle, and the problems that an inner cylinder and an outer cylinder are loosened, the outer cylinder falls off, and clamping beads fall off and fail are solved. Therefore, the stability and durability of the undercarriage safety pin are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft support devices, and particularly relates to an integrated landing gear safety pin. Background Art

[0002] At present, the domestic Boeing NG series aircraft is the main model of Boeing. With the resumption of domestic Boeing MAX models, many airlines, such as Shandong Airlines, China Southern Airlines, Kunming Airlines, and Xiamen Airlines, have put this model into operation. The landing gear safety pins of the NG series aircraft and MAX aircraft are used. The landing gear safety pins of the NG series aircraft and MAX aircraft adopt the method of "inner and outer tube threaded connection and quick release by pressing", which has certain defects:

[0003] 1. The safety pins of this configuration have loose inner and outer tubes, the outer tube falls off, and the beads fall off and fail. There have been many return flights caused by the inner tube of the safety pin falling out in the airline company.

[0004] 2. The dimensions of the NG and MAX landing gear safety pins are inconsistent, which may lead to the risk of mixing them up. For example, the NG safety pin can be inserted into the MAX but cannot be locked, resulting in locking failure or the pin falling out due to the ribbon being blown away in windy weather.

[0005] Therefore, it is necessary to design an integrated landing gear safety pin to solve the above technical problems. Summary of the invention

[0006] In order to solve the above technical problems, the utility model proposes an integrated landing gear safety pin, which adopts the design of the main pin body, the first handle and the second handle, making the operation more convenient and improving the safety and reliability. The pin hole size of the first handle is smaller than the pin hole size of the second handle, which effectively prevents the risk of misoperation and mixed use, ensures the correct use of the landing gear safety pin, and realizes the locking of the positioning pin by cooperating with the pin hole of the first handle, solves the existing problems of loose inner and outer tubes, falling off of the outer tube, and failure of the stuck bead falling off, thereby improving the stability and durability of the landing gear safety pin.

[0007] The technical solution of the utility model is:

[0008] An integrated landing gear safety pin, comprising:

[0009] A kingpin body, wherein a first handle is disposed at one end of the kingpin body and a second handle is disposed at the other end of the kingpin body;

[0010] A positioning pin, wherein one claw of the main pin body is inserted into the pin hole of the first handle, and the other claw of the positioning pin is pressed against the outside of the first handle to lock the positioning pin on the first handle;

[0011] A steel cable, wherein the steel cable comprises two steel cable locking rings, each of which comprises two cylindrical tubes fixedly connected via a connecting plate, one of the cylindrical tubes of the steel cable locking ring is fixedly connected to an outer wall of the steel cable, and the other cylindrical tube of the steel cable locking ring is fixedly connected to an end of the steel cable, and an annular space is formed between the steel cable locking ring and the end of the steel cable;

[0012] A streamer with a second pull ring sleeved thereon;

[0013] The first pull ring is sleeved in the pin hole of the second handle and is sleeved with the second pull ring. The annular space is sleeved with the positioning pin and the first pull ring respectively. The main pin body provides stable support and connection to ensure the firm locking of the landing gear. The first handle makes it easier to insert and remove the safety pin. The positioning pin is locked by cooperating with the pin hole of the first handle. The design of the steel cable enhances the tensile strength and increases the service life of the landing gear safety pin. The streamer facilitates the operator to quickly identify and operate, further improving the reliability and safety of the device.

[0014] Preferably, the ratio of the pin hole size of the first handle to the pin hole size of the second handle is 1:2, which effectively prevents the risk of misoperation and mixed use and ensures its correct use.

[0015] Preferably, the ratio of the overall length of the first handle to the overall length of the second handle is 1:2.

[0016] Preferably, the streamer is set to red, which enhances visibility, facilitates rapid identification and operation in complex environments, and improves safety.

[0017] Preferably, the steel cable is made of stainless steel, and the tensile strength of the steel cable is not less than 1000 MPa, which ensures the stability and reliability of the steel cable in different environments, and has excellent corrosion resistance and tensile strength.

[0018] Compared with the prior art, the utility model has the following advantages and effects:

[0019] (1) The design of the main pin body, the first handle and the second handle makes the operation more convenient and improves safety and reliability. The pin hole size of the first handle is smaller than that of the second handle, which effectively prevents the risk of misoperation and mixed use, and ensures the correct use of the landing gear safety pin. The positioning pin is locked by cooperating with the pin hole of the first handle, solving the existing problems of loose inner and outer tubes, outer tube falling off, and bead falling off and failure, thereby improving the stability and durability of the landing gear safety pin;

[0020] (2) The design adopts two steel cable locking rings. Each steel cable locking ring includes two cylindrical tubes fixedly connected by a connecting plate, one of which is fixedly connected to the outer wall of the steel cable, and the other is fixedly connected to the end of the steel cable, forming an annular space, thereby enhancing the tensile strength and prolonging the service life of the landing gear safety pin;

[0021] (3) The streamer is set in red, which improves visibility and facilitates operators to quickly identify and operate, further improving the reliability and safety of the landing gear safety pin;

[0022] (4) The steel cable is made of stainless steel with a tensile strength of not less than 1000 MPa. It has excellent corrosion resistance and tensile strength, ensuring the stability and reliability of the landing gear safety pin in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the main pin structure of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the steel cable locking ring of the utility model;

[0026] Figure numerals: 1, main pin body; 10, first handle; 100, second handle; 2, positioning pin; 3, steel cable; 30, connecting plate; 300, cylindrical tube; 4, streamer; 5, first pull ring; 6, second pull ring. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the present invention is now further described in conjunction with specific implementation methods.

[0028] Embodiment 1:

[0029] like Figure 1~Figure 3 As shown, the utility model provides an integrated landing gear safety pin, comprising:

[0030] A kingpin body 1, one end of the kingpin body 1 is provided with a first handle 10, and the other end of the kingpin body 1 is provided with a second handle 100;

[0031] The positioning pin 2, one claw of the main pin body 1 is inserted into the pin hole of the first handle 10, and the other claw of the positioning pin 2 is pressed against the outside of the first handle 10 to lock the positioning pin 2 on the first handle 10;

[0032] The steel cable 3 includes two steel cable locking rings, each of which includes two cylindrical tubes 300 fixedly connected by a connecting plate 30, one of the cylindrical tubes 300 of the steel cable locking ring is fixedly connected to the outer wall of the steel cable 3, and the other cylindrical tube 300 of the steel cable locking ring is fixedly connected to the end of the steel cable 3, and an annular space is formed between the steel cable locking ring and the end of the steel cable 3;

[0033] The streamer 4 is sleeved with a second pull ring 6;

[0034] The first pull ring 5 is sleeved in the pin hole of the second handle 100 and sleeved with the second pull ring 6. The annular space is sleeved with the positioning pin 2 and the first pull ring 5 respectively. The main pin body 1 provides stable support and connection to ensure the firm locking of the landing gear. The first handle 10 makes it more convenient to insert and remove the safety pin. The positioning pin 2 is locked by cooperating with the pin hole of the first handle 10. The design of the steel cable 3 enhances the tensile strength and increases the service life of the landing gear safety pin. The streamer 4 is convenient for the operator to quickly identify and operate, further improving the reliability and safety of the device.

[0035] The ratio of the pin hole size of the first handle 10 to the pin hole size of the second handle 100 is 1:2, which effectively prevents the risk of misoperation and mixed use and ensures its correct use.

[0036] The ratio of the overall length of the first handle 10 to the overall length of the second handle 100 is 1:2.

[0037] The streamer 4 is set to red, which enhances visibility, facilitates quick identification and operation in complex environments, and improves safety.

[0038] The steel cable 3 is made of stainless steel, and the tensile strength of the steel cable 3 is not less than 1000 MPa, which ensures the stability and reliability of the steel cable 3 in different environments, and has excellent corrosion resistance and tensile strength.

[0039] Working principle: The design of the first handle 10 and the second handle 100, the pin hole size of the first handle 10 is smaller than the pin hole size of the second handle 100, which effectively prevents the risk of misoperation and mixed use, and ensures the correct use of the landing gear safety pin;

[0040] Locking mechanism of the locating pin 2: The locating pin 2 is locked by cooperating with the pin hole of the first handle 10, which solves the problems of loosening of the inner and outer tubes, falling off of the outer tube, and failure of the bead falling off in the prior art, thereby improving the stability and durability of the landing gear safety pin.

[0041] Each cable locking ring includes two cylindrical tubes 300 fixedly connected by a connecting plate 30. One cylindrical tube 300 is fixedly connected to the outer wall of the cable 3, and the other cylindrical tube 300 is fixedly connected to the end of the cable 3, forming an annular space. The tensile strength is enhanced and the service life of the landing gear safety pin is increased;

[0042] The streamer 4 is set to red, and the streamer meets the requirements of MH-T3011.13, which improves visibility, facilitates operators to quickly identify and operate, and further improves the reliability and safety of the landing gear safety pin;

[0043] The steel cable 3 is made of stainless steel with a tensile strength of not less than 1000 MPa. It has excellent corrosion resistance and tensile resistance, ensuring the stability and reliability of the landing gear safety pin in different environments.

[0044] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An integrated landing gear safety pin, characterized in that: include: A kingpin body (1), wherein one end of the kingpin body (1) is provided with a first handle (10), and the other end of the kingpin body (1) is provided with a second handle (100); A positioning pin (2), wherein one claw of the main pin body (1) is inserted into the pin hole of the first handle (10), and the other claw of the positioning pin (2) is pressed against the outside of the first handle (10) to lock the positioning pin (2) on the first handle (10); A steel cable (3), the steel cable (3) comprising two steel cable locking rings, each steel cable locking ring comprising two cylindrical tubes (300) fixedly connected via a connecting plate (30), one of the cylindrical tubes (300) of the steel cable locking ring being fixedly connected to an outer wall of the steel cable (3), the other cylindrical tube (300) of the steel cable locking ring being fixedly connected to an end of the steel cable (3), and an annular space being formed between the steel cable locking ring and the end of the steel cable (3); The streamer (4) is sleeved with a second pull ring (6); A first pull ring (5), the first pull ring (5) is sleeved in the pin hole of the second handle (100), and is sleeved with the second pull ring (6), and the annular space is sleeved with the positioning pin (2) and the first pull ring (5) respectively.

2. The integrated landing gear safety pin according to claim 1, characterized in that: The ratio of the size of the pin hole of the first handle (10) to the size of the pin hole of the second handle (100) is 1:

2.

3. The integrated landing gear safety pin according to claim 1, characterized in that: The ratio of the overall length of the first handle (10) to the overall length of the second handle (100) is 1:

2.

4. The integrated landing gear safety pin according to claim 1, characterized in that: The streamer (4) is set to be red.

5. The integrated landing gear safety pin according to claim 1, characterized in that: The steel cable (3) is made of stainless steel, and the tensile strength of the steel cable (3) is not less than 1000 MPa.

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