CN211009384U - Engine compartment hydraulic oil discharging device - Google Patents
Engine compartment hydraulic oil discharging device Download PDFInfo
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- CN211009384U CN211009384U CN201921664950.9U CN201921664950U CN211009384U CN 211009384 U CN211009384 U CN 211009384U CN 201921664950 U CN201921664950 U CN 201921664950U CN 211009384 U CN211009384 U CN 211009384U
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- top core
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Abstract
The utility model discloses an engine compartment hydraulic oil jettison gear, include: a thread screw-in sleeve and a top core; the center of the thread screwing sleeve is provided with a stepped thread through hole; the top core is a cylindrical structure provided with external threads, and one end of the top core is provided with a positioning shaft shoulder; the outer diameter of the top core is consistent with the smaller end of the stepped thread through hole of the thread screwing sleeve, and the top core is coaxially sleeved in the stepped thread through hole of the thread screwing sleeve and is in threaded connection with the smaller end of the thread screwing sleeve; the positioning shaft shoulder of the top core abuts against the step surface of the stepped threaded through hole of the threaded screwing sleeve; a set distance is reserved between the end surface of the positioning shaft shoulder of the top core and the large end surface of the stepped thread through hole of the thread screwing sleeve; the center of the top core is provided with a through hole, a boss is arranged in the through hole at the end where the shaft shoulder is located, and the other end of the boss extends out of the end where the shaft shoulder of the top core to set the length for butting against the valve core of the elastic self-sealing valve on the airplane so as to open the elastic self-sealing valve on the airplane and enable hydraulic oil to enter the through hole of the top core.
Description
Technical Field
The utility model relates to an aviation equipment technical field, concretely relates to engine compartment hydraulic oil jettison gear.
Background
In the process of overhaul of a certain type of airplane, the engine part on the airplane needs to be decomposed, but a large amount of residual oil exists in an engine compartment before the airplane is decomposed, and the residual oil needs to be discharged completely. The oil drain port structure of the aircraft engine compartment is an external thread elastic self-sealing valve, and the elastic valve core is required to be pressed into an oil drain cavity during oil drain so as to enable hydraulic oil to flow out under the action of self weight. In the prior art, the maintenance mode is that an operator holds a screwdriver in a hand, presses a valve core of a self-sealing valve into an oil discharge cavity, and then oil flows into an oil receiving box along the arm of the operator after flowing out. Therefore, the pollution to operators is easy to cause, the operation is inconvenient, and the low working efficiency is easy to cause; therefore, a drainage and discharge device is urgently needed to be designed, which can drain and discharge residual oil in an aircraft engine cabin to an oil receiving box, and meanwhile, the drainage and discharge device is required to be convenient to operate and clean to use.
Disclosure of Invention
In view of this, the utility model provides an engine compartment hydraulic oil jettison gear, can make things convenient for clear with aircraft engine under-deck hydraulic oil drainage and discharge to the outside.
The technical scheme of the utility model is that: an engine compartment hydraulic oil discharging device comprising: a thread screw-in sleeve and a top core; the center of the thread screwing sleeve is provided with a stepped thread through hole; the top core is of a cylindrical structure provided with external threads, and one end of the top core is provided with a positioning shaft shoulder; the outer diameter of the top core is consistent with the smaller end of the stepped thread through hole of the thread precession sleeve, and the top core is coaxially sleeved in the stepped thread through hole of the thread precession sleeve and is in threaded connection with the smaller end of the thread precession sleeve; the positioning shaft shoulder of the top core abuts against the step surface of the stepped threaded through hole of the threaded screwing sleeve; a set distance is reserved between the end face of the top core positioning shaft shoulder and the large end face of the stepped thread through hole of the thread screwing sleeve; the center of the top core is provided with a through hole, a boss is arranged in the through hole at the end where the shaft shoulder is located, and the other end of the boss extends out of the end where the shaft shoulder of the top core to set the length for abutting against a valve core of an elastic self-sealing valve on an airplane so as to open the elastic self-sealing valve on the airplane and enable hydraulic oil to enter the through hole of the top core.
As a preferable scheme, the butt joint of the positioning shaft shoulder of the top core and the step surface of the stepped thread through hole of the thread screwing sleeve is sealed.
As a preferable scheme, the anti-dropping screw further comprises an anti-dropping nut which is fixed on the periphery of the top core extending out of the smaller end of the stepped screw through hole of the screw screwing sleeve.
As a preferable scheme, the method further comprises the following steps: the dustproof cap is provided with external threads, one end of the dustproof cap is provided with a positioning shaft shoulder, the center of the dustproof cap is provided with a groove, and when the dustproof cap is used for dustproof, the dustproof cap is screwed into the end with larger aperture of the stepped thread through hole in the inner part of the threaded sleeve, so that the boss extending out of the top core is positioned in the groove of the dustproof cap.
As a preferable scheme, the method further comprises the following steps: and one end of the drainage tube is communicated with the ejection core and is used for draining hydraulic oil in the ejection core.
Preferably, the boss in the top core is a step shaft-shaped boss.
Preferably, the end of the boss located in the through hole of the top core is fixed on the inner wall surface of the through hole of the top core through more than two spokes arranged along the radial direction.
As a preferable scheme, more than two stop punching points are uniformly arranged on the anti-drop nut in the circumferential direction and used for fixing the anti-drop nut.
Preferably, the dustproof cap is connected with the threaded screw-in sleeve through a connecting rope.
Preferably, an annular tool withdrawal groove is arranged at the joint of the dustproof cap main body part and the positioning shaft shoulder.
Has the advantages that:
(1) the utility model discloses simple structure, convenient operation is clean, can be with the interior hydraulic oil drainage of aircraft engine cabin and discharge to the outside.
Drawings
Fig. 1 is the structural schematic diagram of the hydraulic oil discharging device in the aircraft engine compartment of the present invention.
Wherein, 1-dustproof cap, 2-thread screw-in sleeve, 3-sealing rubber ring, 4-top core, 5-anti-drop nut, 6-hose clamp and 7-drainage tube
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
Example 1:
the embodiment provides an engine compartment hydraulic oil jettison gear, can be convenient clear with the interior hydraulic oil drainage of aircraft engine compartment and discharge to the outside.
As shown in fig. 1, the oil drain device includes: the screw thread screwing sleeve 2, the sealing rubber ring 3, the top core 4 and the anti-drop nut 5; the center of the thread screwing sleeve 2 is provided with a stepped thread through hole, the top core 4 is of a cylindrical structure provided with external threads, and one end of the top core is provided with a positioning shaft shoulder; the outer diameter of the top core 4 is consistent with the smaller-aperture end aperture of the stepped thread through hole of the thread precession sleeve 2, the top core 4 is coaxially sleeved in the stepped thread through hole of the thread precession sleeve 2 and is in threaded connection with the smaller-aperture end of the thread precession sleeve 2, and the positioning shaft shoulder of the top core 4 abuts against the stepped surface of the stepped thread through hole of the thread precession sleeve 2, so that the top core 4 is axially positioned relative to the thread precession sleeve 2; a through hole is formed in the top core 4, a cylindrical boss is coaxially arranged in the through hole at the end, where the positioning shaft shoulder of the top core 4 is located, and is used for butting against a valve core of an elastic self-sealing valve on an airplane so as to open the elastic self-sealing valve on the airplane, the outer diameter of the cylindrical boss is smaller than the aperture of the through hole in the top core 4, one end of the cylindrical boss is fixed on the inner wall surface of the through hole in the top core 4 through more than two spokes arranged along the radial direction, so that the interior of the top core 4 is kept in conduction, and the other end of; the distance between the end face of one end, extending out of the top core 4, of the cylindrical boss and the end face of the end, with the larger aperture, of the stepped threaded through hole of the thread screwing sleeve 2 is a set value, the end, extending out of the end, with the smaller aperture, of the stepped threaded through hole of the thread screwing sleeve 2, of the top core 4 is provided with a sealing rubber ring 3 at the butt joint of a positioning shaft shoulder of the top core 4 and the stepped threaded through hole of the thread screwing sleeve 2, and the sealing rubber ring 3 seals the butt joint of the stepped threaded through hole of the top core 4 and the thread screwing sleeve 2; the periphery that the apical core 4 stretches out the screw thread precession cover 2 part is screwed through anticreep nut 5 and is contradicted at the tip of screw thread precession cover 2 for carry out axial spacing to apical core 4 and screw thread precession cover 2.
Specifically, the method comprises the following steps: during the use, on the valve is proclaimed oneself to elasticity on the aircraft to the great end threaded connection in aperture with screw precession cover 2, make the cylindrical boss on the 4 center pins of apical core and the valve core axial centering of valve is proclaimed oneself to elasticity, when rotatory to the position, the case of valve is proclaimed oneself to cylindrical boss with elasticity is impressed the oil extraction intracavity, and hydraulic oil is inside through apical core 4, discharges the outside in the drainage effect of its inside through-hole.
Example 2:
on the basis of embodiment 1, the oil drain device further includes: dustproof cap 1, dustproof cap 1 is provided with the external screw thread, its one end is provided with the location shaft shoulder, the department of meeting of its main part (except that location shaft shoulder) and location shaft shoulder sets up annular tool withdrawal groove, its center sets up the recess, when not using this oil drain device to carry out the oil drain, with the big end of 2 inside stairstepping screw through-holes of dustproof cap 1 screw in cover, the cylindrical boss that stretches out in making the apical core 4 is located the recess of dustproof cap 1, tool withdrawal groove wherein is favorable to dustproof cap 1 and screw in cover 2 chucking fixedly, thereby realize dustproof cap 1 to this oil drain device's dustproof effect.
Example 3:
on the basis of embodiment 1 or embodiment 2, the oil drain device further includes: a drainage tube 7 and a hose clamp 6, wherein one end of the drainage tube 7 is fixed at the end part of the smaller aperture end of the screw thread screwing-in sleeve 2 extending out of the top core 4 through the hose clamp 6 and is used for draining the hydraulic oil in the top core 4, and the other end of the drainage tube 7 is connected with an oil containing device.
Example 4:
on the basis of the embodiment 1, the embodiment 2 or the embodiment 3, the periphery of the cylindrical boss extending out of the top core 4 is cut by a set amount to form a stepped shaft-shaped boss, so that the weight is reduced, and the boss can be aligned with the valve core of the elastic self-sealing valve.
Example 5:
on the basis of embodiment 2, set up the arch on the big end terminal surface of dust cap 1, pass through wire rope with protruding and screw precession cover 2 periphery and be connected, be convenient for this oil drain device hand-carry dust cap 1.
Example 6:
in addition to any one of embodiments 1 to 5, the anti-separation nut 5 is provided with two or more stop punching points uniformly along the circumferential direction for further fixing the anti-separation nut 5 and preventing the anti-separation nut 5 from loosening.
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 (10)
1. An engine compartment hydraulic oil discharging device, characterized by comprising: a thread screwing sleeve (2) and a top core (4); the center of the thread screwing sleeve (2) is provided with a stepped thread through hole; the top core (4) is a cylindrical structure provided with an external thread, and one end of the top core is provided with a positioning shaft shoulder; the outer diameter of the top core (4) is consistent with the smaller end of the stepped thread through hole of the thread precession sleeve (2), and the top core (4) is coaxially sleeved in the stepped thread through hole of the thread precession sleeve (2) and is in threaded connection with the smaller end of the thread precession sleeve (2); the positioning shaft shoulder of the top core (4) is abutted against the step surface of the stepped threaded through hole of the threaded screwing sleeve (2); a set distance is reserved between the end face of the positioning shaft shoulder of the top core (4) and the large end face of the stepped thread through hole of the thread screwing sleeve (2); the center of the top core (4) is provided with a through hole, a boss is arranged in the through hole at the end where the shaft shoulder is located, and the other end of the boss extends out of the end where the shaft shoulder of the top core (4) is located to set the length of the boss for butting against a valve core of an elastic self-sealing valve on an airplane, so that the elastic self-sealing valve on the airplane is opened, and hydraulic oil enters the through hole of the top core (4).
2. The engine compartment hydraulic oil drain device according to claim 1, wherein the top core (4) is sealed at the joint of a positioning shaft shoulder and a stepped surface of a stepped threaded through hole of the threaded screw-in sleeve (2).
3. The engine room hydraulic oil drain device according to claim 1 or 2, further comprising an anti-drop nut (5), wherein the anti-drop nut (5) is fixed to an outer periphery of the top core (4) protruding from a smaller-diameter end of the stepped threaded through-hole of the threaded driving sleeve (2).
4. The engine compartment hydraulic oil discharging device according to claim 1 or 2, further comprising: the dustproof cap (1), dustproof cap (1) is equipped with the external screw thread, and its one end is equipped with the location shaft shoulder, and recess is seted up at its center, and during dustproof, the great end in aperture of the inside stairstepping screw through-hole of cover (2) is screwed in to dustproof cap (1) screw thread, makes the boss that stretches out in the apical core (4) be located the recess of dustproof cap (1).
5. The engine compartment hydraulic oil discharging device according to claim 1 or 2, further comprising: and one end of the drainage tube (7) is communicated with the top core (4) and is used for draining hydraulic oil in the top core (4).
6. The engine room hydraulic oil drain device according to claim 1 or 2, wherein the boss in the top core (4) is a stepped shaft-like boss.
7. The engine compartment hydraulic oil drain device according to claim 1, wherein an end portion of the boss located in the through hole of the top core (4) is fixed to an inner wall surface of the through hole of the top core (4) by two or more spokes arranged in a radial direction.
8. The engine compartment hydraulic oil discharging device according to claim 3, wherein the anti-drop nut (5) is uniformly provided with more than two stopping impact points in the circumferential direction for fixing the anti-drop nut (5).
9. The engine compartment hydraulic oil drain device according to claim 4, wherein the dust cap (1) is connected to the threaded screw-in sleeve (2) by a connection cord.
10. The engine room hydraulic oil draining device according to claim 4, wherein an annular recession is provided at the joint of the main body part of the dust cap (1) and the positioning shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921664950.9U CN211009384U (en) | 2019-09-30 | 2019-09-30 | Engine compartment hydraulic oil discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921664950.9U CN211009384U (en) | 2019-09-30 | 2019-09-30 | Engine compartment hydraulic oil discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211009384U true CN211009384U (en) | 2020-07-14 |
Family
ID=71478621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921664950.9U Active CN211009384U (en) | 2019-09-30 | 2019-09-30 | Engine compartment hydraulic oil discharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211009384U (en) |
-
2019
- 2019-09-30 CN CN201921664950.9U patent/CN211009384U/en active Active
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