Adjustable lock pin used for being installed at bottom of engine fan

Abstract

The invention discloses an adjustable lock pin used for being installed at the bottom of an engine fan, and the adjustable lock pin comprises a lock pin shell attached to the inner side of the bottom of the engine fan, and the upper ends of two clamping plates are integrally connected with the inner sides of two attaching plates respectively, so that a containing area is formed between the two clamping plates; the penetrating plate is located in the containing area; the lock pin body is located in the containing area, and the other end of the lock pin body is used for penetrating through the first through hole to extend along the strip-shaped containing area; the middle part of the lock pin body is fixedly connected with the lock pin shell through a detection bracket; the first elastic piece is arranged on the lock pin body in a sleeving manner, is far away from one end of the lock hole, and is used for shrinking and abutting against the detection bracket when the lock pin body is pulled by the lock hook in the direction far away from the accommodating area; the pull rod is also used for unfolding and pulling the lock pin body back into the accommodating area after the lock pin body is released by the lock hook; the device is suitable for various medium-sized and large-sized fan covers of airplanes; the tolerance is good, the bearing load is large, the extension amount of the lock rod is adjustable, and the adaptability is higher.

Description

Technical Field

[0001] The invention belongs to the field of aviation mechanical locks, and in particular relates to an adjustable lock pin for being installed at the bottom of an engine fan. Background Art

[0002] The safe, continuous and stable operation of aviation equipment is inextricably linked to the quality of the components themselves. It can be said that the quality level of aviation components directly affects the operating level of aviation equipment, so it is very necessary to pay attention to the product quality of aviation components.

[0003] Taking into account the influence of natural or human factors, various situations may occur during the closing process of the left and right covers of the engine fan cover, such as: one cover is in place first, and the other cover is in place later; both sides of the cover are in place at the same time; one side of the cover exceeds the ideal locking position, etc. At present, the left and right covers of the aircraft engine fan cover are not synchronized during the connection process and are not in the same plane, which leads to large gaps at the joints, misaligned gaps, asymmetric gaps, and even the left and right covers cannot be connected.

[0004] In addition, to ensure the safe flight of the aircraft, from the perspective of the aircraft body, it is required that each lock on the aircraft works properly. If the working status of the locks at key positions of the aircraft cannot be accurately monitored, there is a risk that the key position of the aircraft canopy will be opened during flight due to the locks not being closed, resulting in exposure and damage, which may lead to aircraft accidents.

[0005] At present, the main method of detecting fan covers and other cabin covers is to rely on human identification. The moving lock pin will produce a displacement during the operation process, and the mechanical structure allows this displacement to be observed by personnel. However, only nearby personnel can observe it, and personnel inside the aircraft cannot monitor it. In other words, during the flight of the aircraft, the cabin cover cannot be observed in what state it is in. Summary of the invention

[0006] The purpose of the present invention is to provide an adjustable locking pin for installation at the bottom of an engine fan to solve the problems of a large gap between the left and right cabin covers of an aircraft, misaligned gaps, asymmetric gaps, and even the left and right cabin covers being unable to be connected; and whether the lock is locked cannot be detected in the aircraft cabin.

[0007] The present invention adopts the following technical solution: an adjustable locking pin for installation at the bottom of an engine fan, comprising:

[0008] The lock pin housing is attached to the inner side of the bottom of the engine fan and is composed of two oppositely disposed bonding plates and two oppositely disposed clamping plates. The upper ends of the two clamping plates are respectively connected to the inner sides of the two bonding plates as a whole, thereby forming a receiving area between the two clamping plates.

[0009] A through plate is located in the accommodating area, and its two ends are respectively fixedly connected to the inner side walls of the two clamping plates, and a first through hole is opened on the through plate;

[0010] The lock pin body is in the accommodation area, one end of which is a lock hole, and is used for the lock hook to extend into the accommodation area and hook into the lock hole of the lock pin body to complete the locking; the other end of the lock pin body is used to pass through the first through hole and extend along the strip-shaped accommodation area; the middle part of the lock pin body is fixedly connected to the lock pin housing through the detection bracket;

[0011] The first elastic member is sleeved on the lock pin body and at one end away from the lock hole, and is used to shrink and abut against the detection bracket when the lock pin body is pulled away from the accommodating area by the lock hook; it is also used to expand and pull the lock pin body back into the accommodating area after the lock pin body is released by the lock hook.

[0012] Furthermore, it also includes: two fixing plates, which are located in the accommodating area, and the two fixing plates are fixedly connected to the inner side walls of the two clamping plates respectively, so that the detection bracket is fixed on the two fixing plates.

[0013] Furthermore, the detection bracket includes: a limit plate, a positioning plate and an extension plate which are integrally connected in sequence, the limit plate is "V"-shaped, and its upper end is respectively fixedly connected to the two fixing plates, the positioning plate is located at the center of the limit plate, and a second through hole for the locking pin body to pass through is opened at its center, the extension plate is arranged along the direction of the accommodating area, and is located on the lower side of the locking pin body, the end of the extension plate is integrally connected with the detection fixing plate, and the detection fixing plate is arranged vertically downward.

[0014] Furthermore, a third through hole is formed on the detection fixing plate, and a fourth through hole is formed at the lower end of the limiting plate;

[0015] It also includes: a sliding rod, one end of which passes through the third through hole of the detection fixing plate, and the other end of which passes through the fourth through hole of the limit plate and is fixed on the lock pin body by the adjustment mechanism;

[0016] The detection plate is sleeved on the slide bar and located between the detection fixing plate and the limit plate;

[0017] A detection card plate is fixed on the slide bar and is located between the detection plate and the detection fixing plate, and is used to limit the detection plate;

[0018] The second elastic member is sleeved on the sliding rod, and its two ends are respectively fixed on the detection plate and the limit plate. It is used to shrink when the sliding rod is pulled by the locking pin body in the direction of leaving the accommodating area through the adjustment mechanism, so that the detection plate is in the detection area of ​​the sensor, which is convenient for determining whether the lock hook is locked; it is also used to expand and push the detection plate to approach the detection card plate and be resisted when the locking pin body is retracted into the accommodating area, and make the detection plate leave the detection area of ​​the sensor.

[0019] Furthermore, the two clamping plates are arranged in a direction perpendicular to the direction of the laminating plate.

[0020] Furthermore, the lock pin body is composed of a lock rod and a lock plate body, a lock hole is provided on the lock plate body, and the adjustment mechanism is used to adjust the extended length of the lock rod.

[0021] Furthermore, an outer wall of the locking rod is provided with an external thread, and the locking rod is used to extend into the adjustment mechanism and cooperate with the internal thread of the adjustment mechanism, thereby adjusting the length of the locking rod extending out of the adjustment mechanism.

[0022] Furthermore, the adjustment mechanism is a hollow frame, the inner cavity of the frame is used to accommodate the adjusting nut, the adjusting nut is horizontally penetrated with an internal thread, the internal thread of the adjusting nut cooperates with the external thread of the locking rod, and a fifth through hole is opened on the side of the frame close to the locking rod, and the fifth through hole is used for the locking rod to extend into the inner cavity of the frame.

[0023] Furthermore, a first blind hole is provided on the frame of the adjustment mechanism, on the side away from the locking rod, and a third elastic member and a steel ball are placed in the first blind hole in sequence from the inside to the outside. A plurality of recesses are provided on the side of the adjustment nut close to the first blind hole. When any recess corresponds to the first blind hole, the formed area is used to accommodate the steel ball, and the steel ball is used to clamp the adjustment nut to prevent the adjustment nut from rotating without the action of external force.

[0024] Furthermore, the locking rod is also equipped with a positioning pin, and a positioning groove is opened on the outer wall of the frame near the positioning pin. The positioning groove is used for the positioning pin to extend into. The positioning pin is used to prevent the locking rod from detaching from the adjustment mechanism and to prevent the locking rod from rotating after being subjected to external force relative to the adjustment nut.

[0025] The beneficial effects of the present invention are:

[0026] The present invention arranges the adjustment mechanism for adjusting the length of the lock rod at one end away from the lock hole, thereby ensuring the stability and integrity of the lock and preventing the vibration generated by the engine during the unlocking process from causing damage to the lock pin or other components;

[0027] The present invention arranges a detection bracket so that the detection bracket moves with the lock pin body, thereby placing the detection plate in the detection area of ​​the sensor, so as to facilitate determination of whether the lock hook is locked. With such arrangement, it is unnecessary to manually check whether it is locked, and whether the lock is locked can be quickly identified in the cabin. This avoids the situation where only personnel near the cabin cover can observe whether the lock is locked, thereby improving safety and reliability during aircraft maintenance.

[0028] The invention is suitable for various medium-sized and large fan covers of aircraft; it has good tolerance, can bear a large load, the extension amount of the locking rod is adjustable, and has stronger adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1A state diagram is used for the present invention;

[0030] Figure 2 It is a structural schematic diagram of the present invention;

[0031] Figure 3 An exploded view of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the detection bracket of the present invention.

[0033] Among them: 10, lock pin housing; 11, through plate; 12, lock pin body; 13, fitting plate; 14, clamping plate; 15, first elastic member; 16, fixing plate; 17, detection bracket; 18, limit plate; 19, positioning plate; 20, extension plate; 21, detection fixing plate; 22, sliding rod; 23, detection plate; 24, second elastic member; 25, adjustment mechanism; 26, lock rod; 27, lock hook. DETAILED DESCRIPTION

[0034] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. The "direction" in the present invention is based on the position of the present invention in a certain direction. Figure 1 Description of the trend in the state.

[0036] The present invention discloses an adjustable locking pin for installation at the bottom of an engine fan, such as Figure 1 and Figure 2 As shown, it includes a lock pin housing 10 , a through plate 11 , a lock pin body 12 , and a first elastic member 15 .

[0037] The lock pin housing 10 is attached to the inner side of the bottom of the engine fan. The lock pin housing 10 is composed of two oppositely arranged bonding plates 13 and two oppositely arranged clamping plates 14. The upper ends of the two clamping plates 14 are respectively connected to the inner sides of the two bonding plates 13 as a whole, thereby forming a accommodating area between the two clamping plates 14.

[0038] The through plate 11 is located in the accommodating area, and two ends of the through plate 11 are fixedly connected to the inner side walls of the two clamping plates 14 respectively. A first through hole is opened in the through plate 11 .

[0039] The lock pin body 12 is in the accommodating area, one end of the lock pin body 12 is a lock hole, and is used for the lock hook 27 to extend into the accommodating area and hook into the lock hole of the lock pin body 12 to complete the locking; the other end of the lock pin body 12 is used to pass through the first through hole and extend along the strip-shaped accommodating area; the middle part of the lock pin body 12 is fixedly connected to the lock pin housing 10 through the detection bracket 17.

[0040] The first elastic member 15 is sleeved on the lock pin body 12 and at one end away from the lock hole. The first elastic member 15 is used to shrink and abut against the detection bracket 17 when the lock pin body 12 is pulled away from the accommodating area by the lock hook 27; the first elastic member 15 is also used to expand and pull the lock pin body 12 back into the accommodating area after the lock pin body 12 is released by the lock hook 27.

[0041] like Figure 3 As shown, the present invention further includes: two fixing plates 16 , which are located in the accommodating area and are fixedly connected to the inner side walls of the two clamping plates 14 , respectively, so that the detection bracket 17 is fixed on the two fixing plates 16 .

[0042] like Figure 4 As shown, the detection bracket 17 includes: a limit plate 18, a positioning plate 19 and an extension plate 20 which are integrally connected in sequence, the limit plate 18 is "V"-shaped, and the upper ends of the limit plate 18 are respectively fixedly connected to the two fixing plates 16, the positioning plate 19 is located at the center of the limit plate 18, and a second through hole for the locking pin body 12 to pass through is opened at its center, the extension plate 20 is arranged along the direction of the accommodating area, and is located on the lower side of the locking pin body 12, and the end of the extension plate 20 is integrally connected with a detection fixing plate 21, and the detection fixing plate 21 is arranged vertically downward.

[0043] A third through hole is opened on the detection and fixing plate 21, and a fourth through hole is opened at the lower end of the limiting plate 18; the present invention also includes: a sliding rod 22, one end of the sliding rod 22 passes through the third through hole of the detection and fixing plate 21, and the other end of the sliding rod 22 passes through the fourth through hole of the limiting plate 18 and is fixed on the locking pin body 12 by the adjusting mechanism 25.

[0044] The detection plate 23 is sleeved on the slide bar 22 and is located between the detection fixing plate 21 and the limit plate 18 ; the detection card plate is fixed on the slide bar 22 and is located between the detection plate 23 and the detection fixing plate 21 , and the detection card plate is used to limit the detection plate 23 .

[0045] The second elastic member 24 is sleeved on the slide bar 22, and the two ends of the second elastic member 24 are respectively fixed on the detection plate 23 and the limit plate 18. The second elastic member 24 is used to shrink when the slide bar 22 is pulled by the locking pin body 12 in the direction of leaving the accommodating area through the adjustment mechanism 25, so that the detection plate 23 is in the detection area of ​​the sensor, which is convenient for determining whether the lock hook 27 is locked; the second elastic member 24 is also used to expand and push the detection plate 23 to approach the detection card plate and be resisted when the locking pin body 12 is retracted into the accommodating area, and make the detection plate 23 leave the detection area of ​​the sensor.

[0046] The two clamping plates 14 are arranged perpendicular to the laminating plate 13 .

[0047] The lock pin body 12 is composed of a lock rod 26 and a lock plate body. A lock hole is provided on the lock plate body. The adjustment mechanism 25 is used to adjust the extended length of the lock rod 26 .

[0048] The outer wall of the locking rod 26 is provided with an external thread. The locking rod 26 is used to extend into the adjusting mechanism 25 and cooperate with the internal thread of the adjusting mechanism 25 to adjust the length of the locking rod 26 extending out of the adjusting mechanism 25 .

[0049] The adjustment mechanism 25 is a hollow frame, the inner cavity of the frame is used to accommodate the adjusting nut, the adjusting nut is horizontally penetrated with an internal thread, the internal thread of the adjusting nut cooperates with the external thread of the locking rod 26, and a fifth through hole is opened on the side of the frame close to the locking rod 26, the fifth through hole is used for the locking rod 26 to extend into the inner cavity of the frame.

[0050] A first blind hole is provided on the frame of the adjusting mechanism 25, on the side away from the locking rod 26. A third elastic member and a steel ball are placed in the first blind hole in sequence from the inside to the outside. A plurality of recesses are provided on the adjusting nut, on the side close to the first blind hole. When any recess corresponds to the first blind hole, the formed area is used to accommodate the steel ball. The steel ball is used to clamp the adjusting nut to prevent the adjusting nut from rotating without the action of external force.

[0051] The lock rod 26 is also equipped with a positioning pin, and a positioning groove is provided on the outer wall of the frame near the positioning pin. The positioning groove is used for the positioning pin to extend into. The positioning pin is used to prevent the lock rod 26 from detaching from the adjustment mechanism 25, and is also used to prevent the lock rod 26 from rotating relative to the adjustment nut after being subjected to external force.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable locking pin for installation at the bottom of an engine fan, characterized in that: include: The lock pin housing (10) is attached to the inner side of the bottom of the engine fan and is composed of two oppositely arranged bonding plates (13) and two oppositely arranged clamping plates (14). The upper ends of the two clamping plates (14) are respectively connected to the inner sides of the two bonding plates (13) so that a receiving area is formed between the two clamping plates (14); A through plate (11) is located in the accommodating area, and its two ends are respectively fixedly connected to the inner side walls of the two clamping plates (14), and a first through hole is opened on the through plate; The lock pin body (12) is located in the accommodation area, one end of which is a lock hole, and is used for the lock hook (27) to extend into the accommodation area and hook into the lock hole of the lock pin body (12) to complete locking; The other end thereof is used to pass through the first through hole and extend along the strip-shaped accommodation area; the middle part of the lock pin body (12) is fixedly connected to the lock pin housing (10) via a detection bracket (17); The first elastic member (15) is sleeved on the lock pin body (12) and at one end away from the lock hole, and is used to shrink and abut against the detection bracket (17) when the lock pin body (12) is pulled away from the accommodating area by the lock hook (27); and is also used to expand and pull the lock pin body (12) back into the accommodating area after the lock pin body (12) is released by the lock hook (27).

2. An adjustable locking pin for installation at the bottom of an engine fan according to claim 1, characterized in that: Also includes: Two fixing plates (16) are located in the accommodating area, and the two fixing plates (16) are respectively fixedly connected to the inner side walls of the two clamping plates (14), so that the detection bracket (17) is fixed on the two fixing plates (16).

3. An adjustable locking pin for installation at the bottom of an engine fan according to claim 2, characterized in that: The detection bracket (17) comprises: a limit plate (18), a positioning plate (19) and an extension plate (20) which are connected in sequence as one body, the limit plate (18) is "V"-shaped, and its upper end is fixedly connected to two fixing plates (16) respectively, the positioning plate (19) is located at the center of the limit plate (18), and a second through hole for the locking pin body (12) to pass through is opened at the center, the extension plate (20) is arranged along the direction of the accommodating area, and is located at the lower side of the locking pin body (12), and the end of the extension plate (20) is integrally connected with a detection fixing plate (21), and the detection fixing plate (21) is arranged vertically downward.

4. An adjustable locking pin for installation at the bottom of an engine fan according to claim 3, characterized in that: The detection fixing plate (21) is provided with a third through hole, and the lower end of the limiting plate (18) is provided with a fourth through hole; It also includes: a sliding rod (22), one end of which passes through the third through hole of the detection fixing plate (21), and the other end of which passes through the fourth through hole of the limit plate (18) and is fixed on the lock pin body (12) by the adjustment mechanism (25); A detection plate (23) is sleeved on the slide bar (22) and is located between the detection fixing plate (21) and the limiting plate (18); A detection card plate, fixed on the slide bar (22) and located between the detection plate (23) and the detection fixing plate (21), and used for limiting the position of the detection plate (23); The second elastic member (24) is sleeved on the slide bar (22), and its two ends are respectively fixed on the detection plate (23) and the limit plate (18). The second elastic member (24) is used to shrink when the slide bar (22) is pulled by the lock pin body (12) in the direction of leaving the accommodating area through the adjustment mechanism (25), so that the detection plate (23) is in the detection area of ​​the sensor, which is convenient for determining whether the lock hook (27) is locked; and is also used to expand and push the detection plate (23) close to the detection card plate and be pressed when the lock pin body (12) is retracted into the accommodating area, so that the detection plate (23) leaves the detection area of ​​the sensor.

5. The adjustable locking pin for installation at the bottom of an engine fan according to claim 1, characterized in that: The two clamping plates (14) are arranged in a direction perpendicular to the direction of the laminating plate (13).

6. The adjustable locking pin for installation at the bottom of an engine fan according to claim 4, characterized in that: The lock pin body (12) is composed of a lock rod (26) and a lock plate body, a lock hole is provided on the lock plate body, and the adjustment mechanism (25) is used to adjust the extended length of the lock rod (26).

7. An adjustable locking pin for installation at the bottom of an engine fan according to claim 6, characterized in that: The outer wall of the locking rod (26) is provided with an external thread. The locking rod (26) is used to extend into the adjusting mechanism (25) and cooperate with the internal thread of the adjusting mechanism (25) to adjust the length of the locking rod (26) extending out of the adjusting mechanism (25).

8. An adjustable locking pin for installation at the bottom of an engine fan according to claim 7, characterized in that: The adjusting mechanism (25) is a hollow frame, the inner cavity of the frame is used to accommodate the adjusting nut, the adjusting nut is horizontally penetrated with an internal thread, the internal thread of the adjusting nut cooperates with the external thread of the locking rod (26), and a fifth through hole is opened on the side of the frame close to the locking rod (26), and the fifth through hole is used for the locking rod (26) to extend into the inner cavity of the frame.

9. An adjustable locking pin for installation at the bottom of an engine fan according to claim 8, characterized in that: A first blind hole is provided on the frame of the adjusting mechanism (25) at a side away from the locking rod (26), and a third elastic member and a steel ball are placed in the first blind hole in sequence from the inside to the outside. A plurality of recesses are provided on the adjusting nut at a side close to the first blind hole, and when any of the recesses corresponds to the first blind hole, the area formed is used to accommodate the steel ball, and the steel ball is used to clamp the adjusting nut to prevent the adjusting nut from rotating without the action of external force.

10. An adjustable locking pin for installation at the bottom of an engine fan according to claim 9, characterized in that: The locking rod (26) is also provided with a positioning pin. A positioning groove is provided on the outer wall of the frame body near the positioning pin. The positioning groove is used for the positioning pin to extend into. The positioning pin is used to prevent the locking rod (26) from being separated from the adjustment mechanism (25) and to prevent the locking rod (26) from rotating relative to the adjustment nut after being subjected to external force.

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