Double-end puller for magnetic plug of 737NG aircraft engine oil collecting pool

Abstract

A double-end pulling tool for a 737NG aircraft engine oil collecting pool magnetic plug comprises a pulling tool handle, a first pulling tool and a second pulling tool, the first pulling tool and the second pulling tool are arranged at the two ends of the pulling tool handle, the first pulling tool is used for pulling out a corresponding first magnetic plug configuration, and the second pulling tool is used for pulling out a corresponding second magnetic plug configuration. The first puller comprises a first pulling head, and a first pin groove and a first open groove are formed in the end face of the first pulling head in an up-down spaced mode. A first pin hole is formed in the top of the first pin groove, and a first pin is installed in the first pin hole. The first pin penetrates through the first pin hole and is hinged to a cam handle. The second puller comprises a second pulling head, and the end face of the second pulling head is provided with a second open slot and a second wire slot; a locking assembly is arranged on the second open groove and comprises a locking block and a locking screw. According to the double-head puller, two magnetic plug type pullers on a 737NG airplane are integrated, the working efficiency is improved, and tool management is also facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft ground maintenance, in particular to a double-headed extractor for the magnetic plug of the engine oil sump of a 737NG aircraft. Background Art

[0002] Aircraft engines use lubricating oil to lubricate bearings and accessory gears. Magnetic detection plugs (magnetic plugs) are installed in the lubricating oil circuit to adsorb substances in the lubricating oil, and damaged components are judged according to the properties of the substances. In order to detect the damage of rotating components in the engine in time, it is necessary to regularly pull out the magnetic plug for inspection during maintenance work.

[0003] Please refer to the attached Figure 1 and attached Figure 2 , the magnetic plugs of NG aircraft have two different configurations, among which Figure 1 as shown is the first magnetic plug configuration 100, Figure 2 as shown is the second magnetic plug configuration 200 (the second magnetic plug configuration 200 comes with a rigid cable 201), and the two different configurations are each equipped with different special extractors.

[0004] Currently, in actual working conditions, two special extractors need to be used separately to pull out the magnetic plug, and there are the following problems:

[0005] 1. One extractor can only be applicable to one configuration of aircraft and is not universal.

[0006] 2. Borrowing different extractors requires querying the manual to view the corresponding configuration, which reduces work efficiency.

[0007] 3. Different configuration extractors need to be purchased separately, increasing the maintenance cost.

[0008] 4. It brings inconvenience to the classification management of tools. Content of the Utility Model

[0009] Aiming at the deficiencies of the prior art, the utility model provides a double-headed extractor for the magnetic plug of the engine oil sump of a 737NG aircraft to overcome the deficiencies in the prior art.

[0010] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0011] A double-headed extractor for the magnetic plug of the engine oil sump of a 737NG aircraft includes an extractor handle and a first extractor and a second extractor arranged at both ends of the extractor handle.

[0012] The first extractor includes a first extraction head. First pin slots and a first opening slot are arranged at intervals above and below the end face of the first extraction head. A first pin hole is provided at the top of the first pin slot, and a first pin is movably installed in the first pin hole. The upper end of the first pin passes through the first pin hole and extends outside the first pin slot, and a cam handle is hinged to the top of the first pin.

[0013] The first opening slot corresponds to the lug of the first magnetic plug configuration.

[0014] Furthermore, the second extractor includes a second extraction head. A second opening slot is provided on the end face of the second extraction head, and a second wire slot is vertically opened on the wall of the second opening slot. A locking component is provided on the side wall of the second opening slot.

[0015] Furthermore, the locking component includes a locking block and a locking screw. The locking block is slidably arranged laterally in the second opening slot. The locking screw passes through a screw hole opened on the side wall of the second opening slot and is screwed onto the locking block.

[0016] Preferably, sliders are respectively arranged at the upper and lower ends of the locking block, and the sliders cooperate with sliding grooves opened on the inner wall of the second opening slot.

[0017] Preferably, an anti-interference slot is further opened at the top of the locking block.

[0018] Preferably, an adaptation slot is recessed on the inner side surface of the locking block.

[0019] Preferably, a return spring is sleeved on the first pin.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] A double-headed extractor for the oil sump magnetic plug of a 737NG aircraft engine in this case is provided with two heads. The first extractor is used to extract the corresponding first magnetic plug configuration, and the second extractor is used to extract the corresponding second magnetic plug configuration. The extractors for the two magnetic plug configurations on the 737NG aircraft are integrated into one, improving work efficiency, facilitating tool management, eliminating the need to purchase special extractors for different configurations, and reducing maintenance costs.

[0022] In order to understand the present utility model more clearly, the preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the first magnetic plug configuration in the background technology of the present utility model;

[0024] Figure 2 It is a schematic structural diagram of the second magnetic plug configuration in the background technology of the present utility model;

[0025] Figure 3 This is a reference diagram of the usage state of the present utility model;

[0026] Figure 4 , Figure 5 This is a schematic structural diagram of the present utility model;

[0027] Figure 6 , Figure 7 This is an exploded view of the present utility model;

[0028] Figure 8 This is a schematic diagram of the working principle of the present utility model.

[0029] Reference signs in the drawings:

[0030] 1 - Extractor handle, 2 - First extractor, 3 - Second extractor; 21 - First extraction head, 22 - First pin slot, 23 - First opening slot, 24 - First pin, 25 - Cam handle; 31 - Second extraction head, 32 - Second opening slot, 33 - Second wire slot; 41 - Locking block, 42 - Locking screw; 411 - Slide block, 412 - Anti-interference slot, 413 - Adaptation slot; 100 - First magnetic plug configuration, 200 - Second magnetic plug configuration, 201 - Rigid cable on the second magnetic plug configuration. Detailed implementation manners

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0032] In addition, terms such as "first" and "second" are only used for descriptive purposes, mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and do not indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying relative importance.

[0033] In addition, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "equipped with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components; for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Please refer to Figures 1-8 , the present utility model provides a double-headed extractor for the magnetic plug of the oil sump of the 737NG aircraft engine, which includes an extractor handle 1 and a first extractor 2 and a second extractor 3 arranged at both ends of the extractor handle 1. The first extractor 2 is used to extract the corresponding first magnetic plug configuration 100, and the second extractor 3 is used to extract the corresponding second magnetic plug configuration 200. When used in actual working conditions, the first extractor 2 or the second extractor 3 can be selected according to the working needs to extract the corresponding magnetic plug.

[0035] The first extractor 2 includes a first extraction head 21, and a first pin slot 22 and a first opening slot 23 are arranged at intervals up and down on the end face of the first extraction head 21;

[0036] For the first pin slot 22, a first pin hole is arranged at the center of the top thereof, and a first pin 24 is movably installed in the first pin hole. The first pin 24 corresponds to the ear hole on the lug of the first magnetic plug configuration 100; a return spring is sleeved on the first pin 24. The upper end of the first pin 24 passes through the first pin hole and extends outside the first pin slot 22, and a cam handle 25 is hinged to the top of the first pin 24. When the cam handle 25 is pressed, under the action of cams with different radii on the cam handle 25, the first pin 24 is pulled up and the return spring is compressed.

[0037] The first opening slot 23 corresponds to the lug of the first magnetic plug configuration 100, so that the first opening slot 23 on the first extractor 2 can be inserted into the lug of the first magnetic plug configuration 100.

[0038] The working principle of the first extractor 2: When it is necessary to extract the first magnetic plug configuration 100 in actual working conditions, the maintenance personnel hold the extractor handle 1 of the double-headed extractor and press the cam handle 25 to pull up the first pin 24. At this time, align the first opening slot 23 and insert it into the lug of the first magnetic plug configuration 100. After releasing the cam handle 25, under the action of the return spring, the first pin 24 is reset and inserted into the ear hole on the lug of the first magnetic plug configuration 100, and the maintenance personnel can easily rotate and extract the first magnetic plug configuration 100. The installation process is the opposite.

[0039] The second extractor 3 includes a second extraction head 31. A second opening groove 32 is provided on the end face of the second extraction head 31, and a second wire groove 33 is vertically formed on the groove wall of the second opening groove 32. The second opening groove 32 corresponds to the lug of the second magnetic plug configuration 200, and the second wire groove 33 corresponds to the rigid cable 201 on the lug of the second magnetic plug configuration 200.

[0040] A locking assembly is provided on the side wall of the second opening groove 32.

[0041] The locking assembly includes a locking block 41 and a locking screw 42. The locking block 41 is laterally slidably arranged in the second opening groove 32. Sliders 411 are respectively provided at the upper and lower ends of the locking block 41, and the sliders 411 cooperate with the sliding grooves formed on the inner wall of the second opening groove 32, so that the locking block 41 can laterally slide inside the second opening groove 32. The locking screw 42 passes through the screw hole formed on the side wall of the second opening groove 32 and is screwed onto the locking block 41, so that when the locking screw 42 is loosened or tightened, the locking block 41 will be driven to laterally slide inside the second opening groove 32.

[0042] Further, an anti-interference groove 412 is formed at the top of the locking block 41. The anti-interference groove 412 is used to avoid the interference of the rigid cable 201 on the lug of the second magnetic plug configuration 200 when the locking block 41 is locked.

[0043] Further, an adaptation groove 413 is recessed on the inner side surface of the locking block 41. The adaptation groove 413 is adapted to the side surface of the lug of the second magnetic plug configuration 200, so that when the locking screw 42 is tightened, the locking block 41 can be attached to the side surface of the lug of the second magnetic plug configuration 200.

[0044] Working principle of the second extractor 3: In actual working conditions, when it is necessary to extract the second magnetic plug configuration 200, the maintenance personnel first loosen the locking screw 42, so that the locking block 41 abuts against one side of the inner wall of the second opening groove 32, leaving enough space for the insertion of the second extractor 3 and the second magnetic plug configuration 200. Then, the maintenance personnel hold the extractor handle 1 of this double-headed extractor and align the second opening groove 32 with the lug of the second magnetic plug configuration 200 and insert it. At this time, the rigid cable 201 on the lug of the second magnetic plug configuration 200 is embedded in the second wire groove 33, and the locking block 41 is located on one side of the lug of the second magnetic plug configuration 200. After docking in place, the maintenance personnel tighten the locking screw 42. The locking screw 42 drives the locking block 41 to press against the lug of the second magnetic plug configuration 200, and also locks the second magnetic plug configuration 200 in the second opening groove 32 of the second extractor 3. The maintenance personnel can then easily rotate and extract the second magnetic plug configuration 200. The installation process is the opposite.

[0045] Compared with the prior art, a double-headed extractor for the oil sump magnetic plug of a 737NG aircraft engine in this case, where the first extractor is used to extract the corresponding first magnetic plug configuration and the second extractor is used to extract the corresponding second magnetic plug configuration, integrates the extractors for the two magnetic plug configurations on the 737NG aircraft, improving work efficiency.

[0046] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A double-headed extractor for the oil sump magnetic plug of a 737NG aircraft engine, comprising an extractor handle (1) and a first extractor (2) and a second extractor (3) arranged at both ends of the extractor handle (1), characterized in that: The first extractor (2) includes a first extraction head (21), and a first pin slot (22) and a first opening slot (23) are arranged at intervals up and down on the end face of the first extraction head (21); a first pin hole is arranged at the top of the first pin slot (22), and a first pin (24) is movably installed in the first pin hole; the upper end of the first pin (24) passes through the first pin hole and extends outside the first pin slot (22), and a cam handle (25) is hinged to the top of the first pin (24); The first opening slot (23) corresponds to the lug of the first magnetic plug configuration (100).

2. The double-headed extractor for the oil sump magnetic plug of the 737NG aircraft engine according to claim 1, characterized in that: The second extractor (3) includes a second extraction head (31), a second opening slot (32) is arranged on the end face of the second extraction head (31), and a second wire slot (33) is vertically opened on the groove wall of the second opening slot (32); a locking assembly is arranged on the side wall of the second opening slot (32).

3. The double-headed extractor for the oil sump magnetic plug of the 737NG aircraft engine according to claim 2, characterized in that: The locking assembly includes a locking block (41) and a locking screw (42); the locking block (41) is slidably arranged laterally in the second opening slot (32); the locking screw (42) passes through a screw hole opened on the side wall of the second opening slot (32) and is screwed on the locking block (41).

4. The double - headed extractor for the scavenge oil sump magnetic plug of a 737NG aircraft engine according to claim 3, characterized in that: Sliders (411) are respectively arranged at the upper and lower ends of the locking block (41), and the sliders (411) cooperate with the sliding grooves opened on the inner wall of the second opening slot (32).

5. The double-headed extractor for the oil sump magnetic plug of the 737NG aircraft engine according to claim 3, characterized in that: An anti-interference slot (412) is further opened at the top of the locking block (41).

6. The double-headed extractor for the oil sump magnetic plug of the 737NG aircraft engine according to claim 3, characterized in that: An adaptation slot (413) is further recessed on the inner side surface of the locking block (41).

7. The double-headed extractor for the oil sump magnetic plug of the 737NG aircraft engine according to claim 3, characterized in that: A return spring is sleeved on the first pin (24).

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