CN-116038629-B - Decomposing device and method for improving decomposing efficiency of fuel filter shell

CN116038629BCN 116038629 BCN116038629 BCN 116038629BCN-116038629-B

Abstract

The invention relates to a decomposing device and a decomposing method for improving decomposing efficiency of a fuel filter shell, and belongs to the field of maintenance of aeroengines. The punching hammer (2) of the device is arranged on the deflector rod (1) in a penetrating way, the connecting plate (4) is in a shape like a Chinese character 'ji', the deflector rod (1) is connected with the connecting plate (4), the puller heads A (5) and the puller heads B (6) are respectively arranged at the lower ends of two sides of the connecting plate (4), and the distance between the puller heads A (5) and B (6) is adjustable. The method comprises the steps of a, rotating a fuel filter shell (10) until the fuel filter shell is separated, B, clamping a puller head A (5) and a puller head B (6) into a cylindrical surface protruding part of the fuel filter shell (10) and fixing the puller head B (6), and c, holding a punch hammer (2) and moving upwards. The method shortens the average decomposition time to less than 1 minute, reduces the damage rate of the shell to 0, improves the decomposition efficiency, and reduces the time consumption of maintenance operation. The problems that the prior art is destructive to decompose, the surface of the shell is damaged, and the decomposing time is too long are solved.

Inventors

WANG CHENG
LIU GAOSHANG
LIU CHUANG
JIN ZHONGKAI
WANG KUN
ZHANG LUXI
ZENG XIANYI
LIU HAICHEN

Assignees

国营川西机器厂

Dates

Publication Date: 20260505
Application Date: 20230117

Claims (4)

1. The decomposing device for improving the decomposing efficiency of the fuel oil filter shell of the fuel oil control module is characterized by comprising a deflector rod (1), a punch hammer (2), a puller head A (5), a puller head B (6) and a connecting plate (4), wherein the punch hammer (2) is arranged on the deflector rod (1) in a penetrating manner and is in sliding connection with the deflector rod (1), the connecting plate (4) is of a Chinese character 'ji' shape structure, the lower end of the deflector rod (1) is connected with the upper end of the connecting plate (4), the puller head A (5) and the puller head B (6) are respectively arranged at the lower ends of the left side and the right side of the connecting plate (4), and the interval between the puller head A (5) and the puller head B (6) is adjustable; the puller head A (5) and the puller head B (6) are of arc structures, notches are arranged right opposite, clamping parts of ladder structures are arranged on opposite side walls of the puller head A (5) and the puller head B (6), the clamping parts are matched with protrusions on the cylindrical surface of the fuel filter shell (10), the puller head B (6) is in sliding connection with the connecting plate (4), the puller head B (6) can be fixed on the connecting plate (4), the puller further comprises a knurled high-head screw (8) and a cylindrical pin (7), a strip-shaped chute is arranged at the right lower end of the connecting plate (4), a cylindrical pin hole and a threaded hole are arranged on the connecting part of the puller head B (6) at intervals, one end of the cylindrical pin (7) penetrates into the cylindrical pin hole, the other end is arranged in the chute, and the knurled high-head screw (8) penetrates through the chute and then is connected with the threaded hole.
2. The decomposing device for improving the decomposing efficiency of the fuel filter shell of the fuel control module according to claim 1, further comprising a lock nut (3), wherein one end of the deflector rod (1) is provided with external threads, and the end part of the deflector rod (1) penetrates through the connecting plate (4) and then is connected with the lock nut (3), so that the deflector rod (1) is fixedly connected with the connecting plate (4).
3. The decomposing device for improving the decomposing efficiency of the fuel filter shell of the fuel control module according to claim 1, wherein the end, far away from the connecting plate (4), of the deflector rod (1) is provided with a movable handle (9).
4. A decomposition method for improving the decomposition efficiency of a fuel filter shell of a fuel control module is characterized by comprising the decomposition device as set forth in any one of the claims 1 to 3, and comprises the following steps: a. rotating the fuel filter housing (10) with a wrench to disengage from the fixed step; b. Clamping a puller head A (5) of the decomposing device into one side of a cylindrical surface protruding part of a fuel filter shell (10), adjusting the position of a puller head B (6) to enable the puller head B (6) to be attached to the cylindrical surface protruding part of the fuel filter shell (10), and fixing the puller head B (6); c. The impact hammer (2) is held to move upwards rapidly, and the fuel filter shell (10) is taken down.

Description

Decomposing device and method for improving decomposing efficiency of fuel filter shell Technical Field The invention relates to a decomposing device and a decomposing method for improving decomposing efficiency of a fuel filter shell, and belongs to the field of maintenance of aeroengines. Background The fuel filter of the fuel control module (FMM) of a certain engine is a life part, and needs to be replaced every 600 hours or 3 years (based on the first arrival). When replacing the fuel filter, the fuel filter housing needs to be disassembled first. At present, a user does not have an efficient fuel filter shell decomposing mode and can only pull out the fuel filter shell forcibly by manpower. In the operation process, the inside and outside of the fuel filter shell are easy to form negative pressure, so that the shell is extremely difficult to pull out, and the rubber ring is easy to cut off in the rotating process, so that the shell is clamped in the mounting groove, the shell is a cylinder, no acting point is generated, and the decomposition difficulty is increased. And because the appearance of the fuel control module is complicated, the clearance between the fuel filter shell and the oil pump shell is smaller, the interference of the operation space is larger, and the design difficulty of the tool is high. At present, the time for decomposition is too long, the average decomposition time is about 12 minutes, the highest decomposition time is even more than 30 minutes, only destructive decomposition can be adopted, and the damage rate of the shell surface is about 5%. In the maintenance process, the engine in-situ decomposition requirement is met, the outer surface of the aeroengine is a complex molded surface, the space is narrow, the decomposition difficulty is higher, and the requirement is urgent by repeatedly seeking help to a factory to decompose the tool. Disclosure of Invention The technical problem to be solved by the invention is that the prior art is destructive to decompose, so that the surface of the shell is damaged, and the decomposing time is too long. The invention solves the technical problems by adopting the technical scheme that the decomposing device for improving the decomposing efficiency of the fuel filter shell of the fuel control module comprises a deflector rod, a punch hammer, a puller head A, a puller head B and a connecting plate, wherein the punch hammer is arranged on the deflector rod in a penetrating manner and is in sliding connection with the deflector rod, the connecting plate is of a Chinese character 'ji' shaped structure, the lower end of the deflector rod 1 is connected with the upper end of the connecting plate, the puller head A and the puller head B are respectively arranged at the lower ends of the left side and the right side of the connecting plate, and the interval between the puller head A and the puller head B is adjustable. Wherein, the puller head A and the puller head B in the structure are arc-shaped structures, and the notches are arranged opposite to each other. Furthermore, in the structure, the side walls of the puller head A and the puller head B, which are opposite, are provided with clamping parts with ladder-shaped structures, and the clamping parts are matched with the protruding parts of the cylindrical surface of the fuel filter shell. In the structure, the puller head B is slidably connected with the connecting plate, and the puller head B can be fixed on the connecting plate. Further, still include annular knurl high head screw and cylindric lock in the above-mentioned structure, the right lower extreme of connecting plate is provided with the bar spout, and the interval is provided with cylindric lock hole and screw hole on the connecting portion of puller head B, and cylindric lock one end penetrates in the cylindric lock hole, and the spout is arranged in to the other end, and annular knurl high head screw passes behind the spout and is connected with the screw hole. The structure further comprises a lock nut, one end of the deflector rod is provided with external threads, and the end part of the deflector rod penetrates through the connecting plate and then is connected with the lock nut, so that the deflector rod is fixedly connected with the connecting plate. Wherein, in the structure, the end of the deflector rod far away from the connecting plate is provided with a movable handle 9. The decomposing method for improving the decomposing efficiency of the fuel filter shell of the fuel control module comprises any one of the decomposing devices, and comprises the following steps: a. Rotating the fuel filter shell by using a wrench until the fuel filter shell is separated from the fixed step; b. clamping a puller head A of the decomposing device into one side of a cylindrical surface protruding part of the fuel filter shell, adjusting the position of the puller head B, enabling the puller head B to be attached to the cylindrical sur