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

Abstract

The utility model discloses an adjustable lock pin used for being installed at the bottom of an engine fan, which comprises a lock pin shell attached to the inner side of the bottom of the engine fan, and two clamping plates, the upper ends of which are respectively and integrally connected with the inner sides of two attaching plates, so that an accommodating 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 utility model 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 utility model belongs to the field of aviation mechanical lockset, especially relate to a adjustable lock pin for installing in the bottom of engine fan. BACKGROUND

[0002] The safe, continuous and stable operation of aviation equipment is inseparable from the quality of parts themselves, and the quality level of aviation parts directly affects the operation level of aviation equipment, so it is necessary to pay attention to the product quality of aviation parts.

[0003] Considering the influence of natural factors or human factors, during the closing process of the left and right cabin covers of the engine fan cover, various situations may occur, such as: one side cabin cover is in place first, and the other side cabin cover is in place later; both sides of the cabin cover are in place at the same time; one side cabin cover exceeds the ideal locking position, etc. Currently, the left and right cabin covers of the aircraft engine fan cover are not synchronized and not in the same plane during connection, which further causes problems such as large gap, misalignment, asymmetry of the gap, and even the inability to connect the left and right cabin covers.

[0004] In addition, to ensure the safe flight of the aircraft, from the perspective of the aircraft body, each lock catch on the aircraft must work normally. If the working status of the lock catch at the key position of the aircraft cannot be accurately monitored, the core position cover of the aircraft may be opened during flight due to the non-closed lock catch, causing exposure and damage and triggering an aircraft accident.

[0005] Currently, the main method for detecting the cabin cover such as the fan cover is to rely on personnel to identify. The movable lock pin generates a displacement during operation, and this displacement is observed by personnel through mechanical structure. However, only personnel nearby can observe it, and personnel inside the aircraft cannot monitor it, that is, during the flight of the aircraft, the cabin cover cannot be observed to be in what state. INVENTION CONTENTS

[0006] The utility model aims at providing a adjustable lock pin for installing in the bottom of engine fan, to solve the problems of large gap, misalignment, asymmetry of the gap, and even the inability to connect the left and right cabin covers between the left and right cabin covers of the aircraft, and the problem that whether the lockset is locked cannot be detected in the cabin of the aircraft.

[0007] The utility model adopts the following technical scheme: a adjustable lock pin for installing in the bottom of engine fan, comprising:

[0008] The lock pin shell is attached to the inner side of the bottom of the engine fan and is composed of two oppositely arranged bonding plates and two oppositely arranged clamping plates. The upper ends of the two clamping plates are integrally connected with the inner sides of the two bonding plates, thereby forming an accommodation area between the two clamping plates.

[0009] The first through hole is arranged on the plate and located in the accommodating area, and two ends of the plate are fixedly connected with the inner side walls of the two clamping plates respectively.

[0010] The lock pin body is located in the accommodating area, one end of the lock pin body is a lock hole and is used for hooking the lock hook into the lock hole of the lock pin body to complete the locking when the lock hook extends into the accommodating area, and the other end of the lock pin body is used for extending along the strip-shaped accommodating area through the first through hole; and the middle part of the lock pin body is fixedly connected with the lock pin shell through the detection support.

[0011] The first elastic member is sleeved on the lock pin body and located at the end away from the lock hole, is used for being contracted and abutting against the detection support when the lock pin body is pulled by the lock hook in the direction away from the accommodating area, and is also used for being expanded and pulling the lock pin body back to the accommodating area after the lock pin body is released by the lock hook.

[0012] Further, the two fixed plates are located in the accommodating area, and the two fixed plates are fixedly connected with the inner side walls of the two clamping plates respectively, so that the detection support is fixed on the two fixed plates.

[0013] Further, the detection support comprises a limiting plate, a positioning plate and an extension plate which are connected integrally in sequence, the limiting plate is in a “v” shape, the upper ends of the limiting plate are fixedly connected with the two fixed plates respectively, the positioning plate is located at the central position of the limiting plate and a second through hole for the lock pin body to pass through is arranged at the central position of the positioning plate, the extension plate is arranged along the running direction of the accommodating area and is located at the lower side of the lock pin body, and an end part of the extension plate is integrally connected with a detection fixed plate, and the detection fixed plate is vertically arranged downward.

[0014] Further, a third through hole is arranged on the detection fixed plate, and a fourth through hole is arranged on the lower end of the limiting plate.

[0015] The sliding rod is arranged, one end of the sliding rod passes through the third through hole of the detection fixed plate, and the other end of the sliding rod passes through the fourth through hole of the limiting plate and is fixed on the lock pin body by the adjusting mechanism.

[0016] The detection plate is sleeved on the sliding rod and located between the detection fixed plate and the limiting plate.

[0017] The detection clamping plate is fixed on the sliding rod and located between the detection plate and the detection fixed plate, and is used for limiting the detection plate.

[0018] The second elastic member is sleeved on the sliding rod, two ends of the second elastic member are fixed on the detection plate and the limiting plate respectively, is used for being contracted when the sliding rod is pulled by the lock pin body in the direction away from the accommodating area through the adjusting mechanism, so that the detection plate is located in the detection area of the sensor, and it is convenient to determine whether the lock hook is locked; and is also used for being expanded and pushing the detection plate to be close to the detection clamping plate and be abutted against when the lock pin body is retracted into the accommodating area, so that the detection plate is separated from the detection area of the sensor.

[0019] Further, the two clamping plates are arranged perpendicularly to the direction of the fitting plate.

[0020] Further, the lock pin body is composed of a lock rod and a lock plate body, the lock plate body is provided with a lock hole, and the adjusting mechanism is used for adjusting the length of the lock rod.

[0021] Further, the outer wall of the lock rod is provided with external threads, the lock rod is used for extending into the adjusting mechanism and is matched with the internal threads of the adjusting mechanism, so as to adjust the length of the lock rod extending out of the adjusting mechanism.

[0022] Further, the adjusting mechanism is a hollow frame body, the inner cavity of the frame body is used for accommodating the adjusting nut, the adjusting nut is horizontally provided with internal threads, the internal threads of the adjusting nut are matched with the external threads of the lock rod, the fifth through hole is arranged on the side of the frame body close to the lock rod, and the fifth through hole is used for the lock rod extending into the inner cavity of the frame body.

[0023] Further, the first blind hole is arranged on the side of the frame body away from the lock rod, the third elastic member and the steel ball are sequentially arranged in the first blind hole from inside to outside, the side of the adjusting nut close to the first blind hole is provided with a plurality of recesses, when any recess is matched with the first blind hole, the formed area is used for accommodating the steel ball, and the steel ball is used for clamping the adjusting nut, so as to avoid the rotation of the adjusting nut under the action of no external force.

[0024] Further, the lock rod is also provided with a positioning pin, a positioning groove is arranged on the outer wall of the frame body close to the positioning pin, the positioning groove is used for the positioning pin extending into, the positioning pin is used for preventing the lock rod from being separated from the adjusting mechanism and is also used for preventing the lock rod from rotating relative to the adjusting nut under the action of external force.

[0025] The beneficial effects of the utility model are as follows:

[0026] The adjusting mechanism for adjusting the length of the lock rod is arranged at one end away from the lock hole, so that the stability and integrity of the lock are ensured, and damage of the lock pin or other parts caused by vibration of the engine during unlocking is prevented.

[0027] The detection bracket is arranged, so that the detection bracket moves with the lock pin body, the detection plate is in the detection area of the sensor, and whether the lock hook is locked is determined conveniently.

[0028] The utility model is suitable for various medium-sized and large fan covers of an airplane, has good tolerance, bears large load, the extension amount of the lock rod is adjustable, and the adaptability is stronger. DRAWINGS

[0029] Figure 1The use state diagram of the utility model;

[0030] Figure 2 The structural schematic diagram of the utility model;

[0031] Figure 3 The explosion view of the utility model;

[0032] Figure 4 The structural schematic diagram of the detection support.

[0033] Wherein: 10, the lock pin shell;11, the through plate;12, the lock pin body;13, the attached plate;14, the clamping plate;15, the first elastic piece;16, the fixed plate;17, the detection support;18, the limiting plate;19, the positioning plate;20, the extension plate;21, the detection fixed plate;22, the sliding rod;23, the detection plate;24, the second elastic piece;25, the adjusting mechanism;26, the lock rod;27, the lock hook. DETAILED DESCRIPTION

[0034] The utility model will be explained in detail below in combination with the drawings and specific embodiments.

[0035] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more. The "trend" in the utility model is described according to the trend when the utility model is in the Figure 1 state.

[0036] The utility model discloses a kind of adjustable lock pin for being installed in the bottom of engine fan, as shown in Figure 1 And Figure 2 It includes lock pin shell 10, through plate 11, lock pin body 12, first elastic piece 15.

[0037] The lock pin shell 10 is attached to the inner side of the bottom of the engine fan, and the lock pin shell 10 is composed of two oppositely arranged attaching plates 13 and two oppositely arranged clamping plates 14, the upper ends of the two clamping plates 14 are integrally connected with the inner sides of the two attaching plates 13, and thus the accommodating area is formed between the two clamping plates 14.

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

[0039] The lock pin body 12 is located 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 lock hole of the lock pin body 12 to complete the locking, the other end of the lock pin body 12 is used for extending through the first through hole along the strip-shaped accommodating area, and the middle part of the lock pin body 12 is fixedly connected with the lock pin shell 10 through the detection bracket 17.

[0040] The first elastic member 15 is sleeved on the lock pin body 12 and away from the lock hole, the first elastic member 15 is used for being contracted and abutting against the detection bracket 17 when the lock pin body 12 is pulled by the lock hook 27 to the direction away from the accommodating area, and the first elastic member 15 is also used for being expanded and pulling the lock pin body 12 back to the accommodating area after the lock pin body 12 is released by the lock hook 27.

[0041] As shown in Figure 3 The utility model also includes two fixed plates 16, the two fixed plates 16 are located in the accommodating area, and the two fixed plates 16 are fixedly connected with the inner side walls of the two clamping plates 14, and thus the detection bracket 17 is fixed on the two fixed plates 16.

[0042] As shown in Figure 4 The detection bracket 17 includes limit plate 18, positioning plate 19 and extension plate 20 that are integrally connected in sequence, the limit plate 18 is " V" shaped, the upper ends of the limit plate 18 are fixedly connected with the two fixed plates 16, the positioning plate 19 is located at the central position of the limit plate 18 and is provided with the second through hole for the lock pin body 12 to pass through at the central position, the extension plate 20 is arranged along the direction of the accommodating area and is located at the lower side of the lock pin body 12, and the end part of the extension plate 20 is integrally connected with the detection fixed plate 21, and the detection fixed plate 21 is vertically arranged downwards.

[0043] The third through hole is formed in the detection fixed plate 21, and the fourth through hole is formed in the lower end of the limit plate 18; the utility model also includes the slide rod 22, one end of the slide rod 22 passes through the third through hole of the detection fixed plate 21, and the other end of the slide rod 22 passes through the fourth through hole of the limit plate 18 and is fixed on the lock pin body 12 by the adjusting mechanism 25.

[0044] The detection plate 23 is sleeved on the slide rod 22 and located between the detection fixed plate 21 and the limiting plate 18; the detection clamping plate is fixed on the slide rod 22 and located between the detection plate 23 and the detection fixed plate 21, and the detection clamping plate is used for limiting the detection plate 23.

[0045] The second elastic member 24 is sleeved on the slide rod 22, and the two ends of the second elastic member 24 are fixed on the detection plate 23 and the limiting plate 18 respectively, the second elastic member 24 is used for being contracted when the slide rod 22 is pulled by the adjusting mechanism 25 to the direction of separating from the containing area, so that the detection plate 23 is in the detection area of the sensor, and whether the locking hook 27 is locked is determined; the second elastic member 24 is also used for being expanded and pushing the detection plate 23 to be close to the detection clamping plate and be resisted when the locking pin body 12 is withdrawn into the containing area, and the detection plate 23 is separated from the detection area of the sensor.

[0046] The directions of the two clamping plates 14 are perpendicular to the direction of the abutting plate 13.

[0047] The locking pin body 12 is composed of a locking rod 26 and a locking plate body, the locking plate body is provided with a locking hole, and the adjusting mechanism 25 is used for adjusting the length of the locking rod 26 extending out.

[0048] The outer wall of the locking rod 26 is provided with external threads, the locking rod 26 is used for extending into the adjusting mechanism 25 and being matched with the internal threads of the adjusting mechanism 25, so as to adjust the length of the locking rod 26 extending out of the adjusting mechanism 25.

[0049] The adjusting mechanism 25 is a hollow frame body, the inner cavity of the frame body is used for containing an adjusting nut, the adjusting nut is horizontally provided with internal threads, the internal threads of the adjusting nut are matched with the external threads of the locking rod 26, the fifth through hole is arranged on the side of the frame body close to the locking rod 26, and the fifth through hole is used for the locking rod 26 extending into the inner cavity of the frame body.

[0050] The first blind hole is arranged on the side of the frame body of the adjusting mechanism 25 away from the locking rod 26, the third elastic member and a steel ball are sequentially arranged in the first blind hole from inside to outside, a plurality of recesses are arranged on the side of the adjusting nut close to the first blind hole, when any recess corresponds to the first blind hole, a region formed by the recess and the first blind hole is used for containing the steel ball, and the steel ball is used for clamping the adjusting nut, so as to avoid the adjusting nut rotating under the action of no external force.

[0051] The locking rod 26 is also provided with a positioning pin, a positioning groove is arranged on the outer wall of the frame body close to the positioning pin, the positioning groove is used for the positioning pin extending into, and the positioning pin is used for preventing the locking rod 26 from being separated from the adjusting mechanism 25 and preventing the locking rod 26 from rotating after being subjected to external force relative to the adjusting nut.

[0052] The above merely is the preferred embodiment of the present application, and does not limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable cotter pin for mounting on an engine fan bottom, characterized by, The utility model relates to a locking pin structure of engine fan, including: Locking pin shell (10) is pasted in the bottom inside of engine fan, is composed of two opposite setting and pasting board (13) and two opposite setting and clamping plate (14), the upper end of two clamping plate (14) is integrally connected with the inside of two pasting board (13) respectively, further make the containing area between two clamping plate (14); Pass through the board (11) and locate the containing area, and its both ends are fixedly connected with the inner wall of two clamping plate (14) respectively, and the first through -hole is set up on it; Locking pin body (12) is in the containing area, and one end is lock hole and is used for the lock hook (27) to extend into the containing area and is hooked in the lock hole of locking pin body (12) and completes locking; The other end is used for passing through the first through -hole and extending along the strip containing area, and the middle part of locking pin body (12) is fixedly connected with locking pin shell (10) through detection support (17); First elastic part (15) is sleeved on locking pin body (12) and is away from the one end of lock hole, is used for shrinking and abutting on detection support (17) when locking pin body (12) is pulled away from the containing area by lock hook (27), is also used for unfolding and pulling locking pin body (12) back to the containing area after locking pin body (12) is released by lock hook (27).

2. An adjustable locking pin for mounting on the bottom of an engine fan as defined in claim 1, wherein Also including: Two fixed plates (16) are located in the containing area, and two fixed plates (16) are fixedly connected with the inner wall of two clamping plate (14) respectively, further make detection support (17) fixed on two fixed plates (16).

3. An adjustable locking pin for mounting on the bottom of an engine fan as defined in claim 2, wherein, Detection support (17) includes: limit plate (18), positioning plate (19) and extension plate (20) integrally connected in sequence, the limit plate (18) is " V" shape, and the upper end is fixedly connected with two fixed plates (16) respectively, the positioning plate (19) is located at the center position of limit plate (18), and the second through -hole for locking pin body (12) is set up in the center position, the extension plate (20) is set along the trend of containing area and is located at the downside of locking pin body (12), and the end of extension plate (20) is integrally connected with detection fixed plate (21), and detection fixed plate (21) is vertically set downward.

4. An adjustable locking pin for mounting to the bottom of an engine fan as defined in claim 3, wherein, The third through -hole is set up on detection fixed plate (21), and the fourth through -hole is set up on the lower end of limit plate (18); Also including: slide rod (22), one end passes through the third through -hole of detection fixed plate (21), and the other end passes through the fourth through -hole of limit plate (18) and is fixed on locking pin body (12) by adjusting mechanism (25); Detection plate (23) is sleeved on the slide rod (22) and is located between detection fixed plate (21) and limit plate (18); Detection card board is fixed on the slide rod (22) and is located between detection plate (23) and detection fixed plate (21), and is used for limiting detection plate (23). A second elastic member (24) is sleeved on the slide rod (22) and fixed at two ends on the detection plate (23) and the limiting plate (18) respectively, used for being contracted when the slide rod (22) is pulled by the adjusting mechanism (25) in the direction of being separated from the containing area by the lock pin body (12), so that the detection plate (23) is in the detection area of the sensor, and whether the locking hook (27) is locked is determined; and used for being expanded and pushing the detection plate (23) to be close to the detection plate and abutted when the lock pin body (12) is withdrawn into the containing area, so that the detection plate (23) is separated from the detection area of the sensor.

5. An adjustable cotter pin for mounting on the bottom of an engine fan as defined in claim 1, wherein, The two clamping plates (14) are arranged perpendicularly to the direction of the abutting plate (13).

6. An adjustable cotter pin for mounting on the bottom of an engine fan as defined in claim 4 wherein, The lock pin body (12) is composed of a lock rod (26) and a lock plate body, the lock plate body is provided with a lock hole, and the adjusting mechanism (25) is used for adjusting the length of the lock rod (26) extending out.

7. An adjustable cotter pin for mounting on the bottom of an engine fan as defined in claim 6 wherein, The outer wall of the lock rod (26) is provided with external threads, the lock rod (26) is used for extending into the adjusting mechanism (25) and matched with the internal threads of the adjusting mechanism (25), so as to adjust the length of the lock rod (26) extending out of the adjusting mechanism (25).

8. An adjustable locking pin for mounting to the bottom of an engine fan as defined in claim 7, wherein, The adjusting mechanism (25) is a hollow frame body, the inner cavity of the frame body is used for containing an adjusting nut, the adjusting nut is provided with internal threads horizontally and penetratingly, the internal threads of the adjusting nut are matched with the external threads of the lock rod (26), a fifth through hole is arranged on the side of the frame body close to the lock rod (26), and the fifth through hole is used for the lock rod (26) extending into the inner cavity of the frame body.

9. An adjustable cotter pin for mounting on the bottom of an engine fan as defined in claim 8, wherein, A first blind hole is arranged on the side of the frame body of the adjusting mechanism (25) away from the lock rod (26), the first blind hole is sequentially placed with a third elastic member and a steel ball from inside to outside, a plurality of recesses are arranged on the side of the adjusting nut close to the first blind hole, when any recess is matched with the first blind hole, a region formed by the recess and the first blind hole is used for containing the steel ball, and the steel ball is used for clamping the adjusting nut to avoid the adjusting nut rotating under the action of no external force.

10. An adjustable locking pin for mounting to the bottom of an engine fan as defined in claim 9, wherein, The lock rod (26) is also provided with a positioning pin, a positioning groove is arranged on the outer wall of the frame body close to the positioning pin, the positioning groove is used for the positioning pin extending into, and the positioning pin is used for preventing the lock rod (26) from being separated from the adjusting mechanism (25) and preventing the lock rod (26) from rotating after being subjected to external force relative to the adjusting nut.

Images