CN212220594U

CN212220594U - Aircraft intake duct guard grating rocking arm extraction device

Info

Publication number: CN212220594U
Application number: CN201922412278.0U
Authority: CN
Inventors: 刘廷法; 朱永; 石峰; 葛翔
Original assignee: Dalian Changfeng Industrial Corp
Current assignee: Dalian Changfeng Industrial Corp
Priority date: 2019-12-29
Filing date: 2019-12-29
Publication date: 2020-12-25
Anticipated expiration: 2029-12-29

Abstract

The utility model provides an aircraft intake duct guard grating rocking arm extraction device can reduce the degree of difficulty that the guard grating rocking arm was extracted, reduces the damage of guard grating rocking arm, has guaranteed the quality of decomposition work. The method comprises the following steps: the device comprises an impact hammer, a threaded sliding rod, a handle, an expansion sleeve and an expansion head; when in use, the rocker arm of the aircraft air inlet protective grid and the expansion head are connected; then the handle is rotated to enable the expansion sleeve to axially move along the threaded sliding rod, so that the rocker arm of the aircraft airway protective grid is clamped tightly; and finally, applying external acting force to an impact hammer, and repeatedly impacting the limit boss at the end part of the threaded slide rod by the impact hammer so as to continuously pull out the air inlet passage protection gate rocker arm connected with the expansion head.

Description

Aircraft intake duct guard grating rocking arm extraction device

Technical Field

The utility model relates to an instrument, concretely relates to device is extracted to aircraft intake duct guard grating rocking arm belongs to aeronautical manufacturing, maintenance technical field.

Background

In the process of decomposing the aircraft air inlet protective barrier, the rocker arm of the air inlet protective barrier needs to be pulled out, and because the rocker arm is tightly matched with the mounting point and the decomposition space is narrow, great difficulty is brought to decomposition work.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an aircraft intake duct guard grating rocking arm extraction element, through operate the device can be convenient extract aircraft intake duct guard grating rocking arm from the mounted position to operation simple accurate improves the quality and the work efficiency that the product decomposed.

Aircraft intake duct guard grating rocking arm pull-out device include: the device comprises an impact hammer, a threaded sliding rod, a handle, an expansion sleeve and an expansion head;

more than two strip-shaped gaps which are parallel to the expansion sleeve in the axial direction are uniformly distributed at intervals along the circumferential direction at one end of the expansion sleeve and are used as expansion gaps;

the expansion head is used for being connected with a rocker arm of an aircraft air inlet protective grid;

the handle comprises a threaded sleeve with internal threads and handles arranged at two opposite ends of the outer surface of the threaded sleeve;

one end of the threaded sliding rod is provided with an external thread which is in threaded fit with the threaded sleeve, the other end of the threaded sliding rod is provided with a polished rod, and the end part of the polished rod end is provided with a limiting boss;

the connection relationship is as follows: the expansion head is arranged at the end of the expansion gap of the expansion sleeve, one end of the expansion head is positioned in the expansion sleeve, and the other end of the expansion head extends out of the expansion sleeve and is used for being connected with a rocker arm of an airplane air inlet protective grid; the other end of the expansion sleeve is fixedly connected with the threaded sleeve of the handle; the impact hammer is sleeved on the polished rod part of the threaded sliding rod and is in sliding fit with the polished rod part of the threaded sliding rod; the part of the threaded sliding rod provided with the external thread is in threaded connection with the threaded sleeve of the handle, and the end of the threaded sliding rod extends into the expansion sleeve and then is connected with the expansion head.

Furthermore, the end face of the expansion sleeve is hexagonal, and the central hole of the expansion sleeve is an octagonal hole; the end part of the expansion sleeve is provided with four expansion gaps which are positioned at four non-adjacent inner corners of the central hole of the expansion sleeve.

When in use, the expansion head and the rocker arm of the aircraft air inlet protective grid are used; then the handle is rotated to enable the expansion sleeve to axially move along the threaded sliding rod, so that the rocker arm of the aircraft airway protective grid is clamped tightly; and finally, applying external acting force to an impact hammer, and repeatedly impacting the limit boss at the end part of the threaded slide rod by the impact hammer so as to continuously pull out the air inlet passage protection gate rocker arm connected with the expansion head.

Has the advantages that:

(1) the device simple structure is practical, has reduced the degree of difficulty that the guard grating rocking arm extracted, can extract aircraft intake duct guard grating rocking arm comparatively easily, prevents to cause the damage to the aircraft annex because the space is narrow and small and the decomposition method is improper in the decomposition process.

(2) The expansion sleeve is arranged to play a role in buffering in the whole process, so that the rocker arm is prevented from being damaged in the pulling-out process, and the quality of decomposition work is guaranteed.

Drawings

Fig. 1 is a perspective view of the overall structure of the rocker arm extracting device;

FIG. 2 is a front view of the rocker arm pull out device;

FIG. 3 is a schematic view of the construction of the expansion sleeve;

fig. 4 is a view a-a and a view B-B of fig. 3.

Wherein: 1-impact hammer, 2-thread slide bar, 3-handle, 4-expansion sleeve and 5-expansion head.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings by way of examples.

The embodiment provides an in-process that decomposes aircraft intake duct protective grating, will extract device from its mounted position aircraft intake duct protective grating rocking arm to aircraft intake duct protective grating rocking arm. The device can reduce the difficulty of pulling out the protective gate rocker arm, reduce the damage of the protective gate rocker arm and ensure the quality of the decomposition work.

As shown in fig. 1 and 2, the device for pulling out the rocker arm of the aircraft air inlet protective barrier comprises: the device comprises an impact hammer 1, a threaded sliding rod 2, a handle 3, an expansion sleeve and an expansion head 5;

as shown in fig. 3 and 4, the end surface of the expansion sleeve 4 is hexagonal, the central hole thereof is octagonal, four strip-shaped notches parallel to the axial direction thereof are uniformly distributed at intervals along the circumferential direction at one end of the expansion sleeve 4 as expansion gaps, and the four expansion gaps are located at four non-adjacent inner corners of the central hole thereof.

The expansion head 5 (similar to an expansion bolt) is used for being connected with the rocker arm of the aircraft air inlet protective grid, and the size of the expansion head is matched with the size of a corresponding mounting hole (the mounting hole directly adopts a lightening hole on the rocker arm) on the rocker arm of the aircraft air inlet protective grid;

the handle 3 comprises a threaded sleeve with internal threads and handles arranged at two opposite ends of the outer surface of the threaded sleeve;

one end of the threaded sliding rod 2 is provided with an external thread which is used for being in threaded fit with the threaded sleeve, and the other end of the threaded sliding rod is a polished rod;

the connection relationship is as follows: the expansion head 5 is arranged at the end of the expansion gap of the expansion sleeve 4, one end of the expansion head is positioned in the expansion sleeve 4, and the other end of the expansion head extends out of the expansion sleeve 4 and is used for being connected with a lightening hole on a rocker arm of an aircraft air inlet protective grid; the other end of the expansion sleeve 4 is fixedly connected with the threaded sleeve of the handle 3; the impact hammer 1 is sleeved on the polished rod part of the threaded slide rod 2 and is in sliding fit with the polished rod part of the threaded slide rod 2; the end part of the polished rod part of the threaded slide rod 2 is provided with a limit boss (which can also be realized by arranging a shaft shoulder at the end), and when the impact hammer 1 slides to the position of the boss, the boss is impacted; the part of the threaded sliding rod 2 which is provided with the external thread is connected with the threaded sleeve of the handle 3 in a threaded manner, and the end of the threaded sliding rod extends into the expansion sleeve 4 and then is connected with one end of the expansion head 5 which is positioned in the expansion sleeve 4.

When the device is used for pulling out the rocker arm of the aircraft air inlet protective grid: firstly, connecting an expansion head 5 with a rocker arm of an aircraft air inlet protective grid; then the handle 3 is rotated to enable the expansion sleeve 4 to move forwards along the axial direction of the threaded sliding rod 2 and clamp the protection grid rocker arm of the air inlet channel; and finally, external acting force is acted on the impact hammer 1, so that the impact hammer 1 moves backwards along the axial direction of the threaded slide rod 2, repeatedly impacts the tail part of the aircraft air inlet protective fence rocker arm pulling device (namely the limiting boss at the end part of the threaded slide rod 2) through the impact hammer 1 to generate impulse, and the air inlet protective fence rocker arm connected with the expansion head 5 is continuously pulled out. The expansion sleeve 4 can play a role in buffering in the whole process, and the rocker arm is prevented from being damaged in the pulling-out process.

In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a device is extracted to aircraft intake duct guard grating rocking arm which characterized in that includes: the device comprises a striking hammer (1), a threaded sliding rod (2), a handle (3), an expansion sleeve (4) and an expansion head (5);

more than two strip-shaped gaps which are parallel to the expansion sleeve (4) in the axial direction are uniformly distributed at intervals along the circumferential direction at one end of the expansion sleeve as expansion gaps;

the expansion head (5) is used for being connected with a rocker arm of an aircraft air inlet protective grid;

the handle (3) comprises a threaded sleeve with internal threads and handles arranged at two opposite ends of the outer surface of the threaded sleeve;

one end of the threaded sliding rod (2) is provided with an external thread which is used for being in threaded fit with the threaded sleeve, the other end of the threaded sliding rod is a polished rod, and the end part of the polished rod end is provided with a limiting boss;

the connection relationship is as follows: the expansion head (5) is arranged at the end of the expansion gap of the expansion sleeve (4), one end of the expansion head is positioned in the expansion sleeve (4), and the other end of the expansion head extends out of the expansion sleeve (4) and is used for being connected with a rocker arm of an airplane air inlet protective grid; the other end of the expansion sleeve (4) is fixedly connected with the threaded sleeve of the handle (3); the impact hammer (1) is sleeved on the polished rod part of the threaded sliding rod (2) and is in sliding fit with the polished rod part of the threaded sliding rod (2); the part of the threaded sliding rod (2) which is provided with the external thread is in threaded connection with the threaded sleeve of the handle (3), and the end of the threaded sliding rod extends into the expansion sleeve (4) and then is connected with the expansion head (5).

2. The aircraft inlet protective fence rocker arm pulling device as recited in claim 1, characterized in that the end surface of the expansion sleeve (4) is hexagonal, and the central hole thereof is an octagonal hole; the end part of the expansion sleeve (4) is provided with four expansion gaps which are positioned at four nonadjacent inner corners of the central hole of the expansion sleeve (4).