CN211001865U

CN211001865U - Aircraft engine tail cover convenient to installation

Info

Publication number: CN211001865U
Application number: CN201921776470.1U
Authority: CN
Inventors: 李军
Original assignee: Chengdu Zhengshan Machinery Manufacturing Co ltd
Current assignee: Chengdu Zhengshan Machinery Manufacturing Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-14
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses an aircraft engine tail cover convenient to installation, including a fixed cylinder and a tail cover main body, the fixed cylinder is integrated with the tail cover main body, the surface of the fixed cylinder is provided with evenly distributed fixed holes, the fixed holes are internally provided with lead screws through screw threads in a screwing way, the end parts of the lead screws extend out of the surface of the fixed cylinder, and the end parts of the extending ends are fixedly provided with helical gears, the surface of the fixed cylinder is provided with two helical gear rings through a bearing fixing sleeve, and the helical gear rings are symmetrically distributed on two sides of the helical gears, and the helical gear rings are meshed with the helical gears; through design skewed tooth ring and helical gear, can realize all helical gears synchronous rotations through rotating skewed tooth ring, realize the quick fixation and the dismantlement to the tail-hood, compare through the single installation of spanner or dismantle the lead screw, this structure easy operation has improved dismouting efficiency greatly, saves the labour.

Description

Aircraft engine tail cover convenient to installation

Technical Field

The utility model belongs to the technical field of the engine tail cover, concretely relates to aircraft engine tail cover convenient to installation.

Background

The tail cover is also called tail fairing, the tail of the airplane has a shape-maintaining rectification structure, the tail cover of the jet engine installed in the airplane body has the functions of shape-maintaining rectification and tail jet pipe air flow injection to improve thrust, and the tail cover is in a high-temperature area and a tail part, so that the tail cover is easy to damage, and is easy to replace and generally adopts a detachable connection mode with the airplane body.

The existing aircraft engine tail cover has the problems that the tail cover is fixed with an engine through bolts, the bolts need to be screwed and fastened one by one, the tail cover is inconvenient to assemble and disassemble, time and labor are wasted in operation, and the installation efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an aircraft engine tail cover convenient to installation to current aircraft engine tail cover that proposes in solving above-mentioned background art has the tail cover and adopts bolt and engine fixed, and the bolt need close the fastening one by one soon, the loading and unloading of the tail cover of being not convenient for, the operation is wasted time and energy, problem that the installation effectiveness is low.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an aircraft engine tail hood convenient to installation, includes solid fixed cylinder and tail hood main part, solid fixed cylinder and tail hood main part are as an organic whole admittedly, evenly distributed's fixed orifices is seted up to the surface of fixed cylinder, it is provided with the lead screw to close soon through the screw thread in the fixed orifices, the surface of fixed cylinder is stretched out to the tip of lead screw, and stretches out end fixing and be provided with the helical gear, the surface of fixed cylinder is equipped with two skewed tooth rings through the fixed cover of bearing, and the symmetric distribution is in the both sides of helical gear, skewed tooth ring meshes with the helical gear mutually.

Preferably, the surface of a fixed section of thick bamboo is seted up evenly distributed's smooth chamber, it has the briquetting to slide the embedding in the smooth chamber, the surface of a fixed section of thick bamboo is stretched out to the one end of briquetting, the surface of a fixed section of thick bamboo closes soon through the screw thread and is provided with the internal thread ring, the one end welded fastening of internal thread ring has the clamping ring, the internal surface of clamping ring and the end tip that stretches out of briquetting all set up to the arc surface, the briquetting sticiss with the clamping ring mutually.

Preferably, the end part of the embedded end of the pressing block is provided with an arc chamfer, and the end part of the extending end of the pressing block is provided with a limiting block.

Preferably, the outer surface of the internal thread ring is provided with a blind hole, and the inner surface of the blind hole is provided with a thread groove.

Preferably, a gap of 1-2mm exists between the inner surface of the press ring and the outer surface of the fixed cylinder.

Preferably, the fixed bolster that is provided with of tip of a fixed section of thick bamboo, the bolster includes first gasket, second gasket, slide bar and reset spring, second gasket and a fixed section of thick bamboo welded fastening, in the one end slip embedding second gasket of slide bar, the other end and first gasket welded fastening, reset spring sliding sleeve establishes the surface at the slide bar.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) through design skewed tooth ring and helical gear, can realize all helical gears synchronous rotations through rotating skewed tooth ring, realize the quick fixation and the dismantlement to the tail-hood, compare through the single installation of spanner or dismantle the lead screw, this structure easy operation has improved dismouting efficiency greatly, saves the labour.

(2) Through design briquetting, clamping ring and internal thread ring, rotate the internal thread ring and can realize fixing the interim of a section of thick bamboo, the skewed tooth ring of being convenient for operate makes its accuracy close fixedly soon, sets up the blind hole that has the thread groove, is convenient for rotate the internal thread ring with the help of the screw rod, makes it rotate more laborsavingly.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the fixing cylinder of the present invention;

fig. 3 is a side view of the helical gear ring of the present invention;

fig. 4 is a connection structure diagram of the first gasket and the second gasket of the present invention;

in the figure: 1. a fixed cylinder; 2. a skewed tooth ring; 3. a helical gear; 4. briquetting; 5. pressing a ring; 6. an internally threaded ring; 7. blind holes; 8. a tail cap body; 9. a screw rod; 10. a buffer member; 11. a first gasket; 12. a second gasket; 13. a slide bar; 14. a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides an aircraft engine tail hood convenient to installation, including solid fixed cylinder 1 and tail hood main part 8, gu fixed cylinder 1 and tail hood main part 8 are as an organic whole admittedly, evenly distributed's fixed orifices is seted up to the surface of solid fixed cylinder 1, be provided with lead screw 9 through the screw thread soon in the fixed orifices, the surface of solid fixed cylinder 1 is stretched out to the tip of lead screw 9, and stretch out end fixing and be provided with helical gear 3, the surface of solid fixed cylinder 1 is equipped with two skewed tooth rings 2 through the bearing fixing cover, and the symmetric distribution is in the both sides of helical gear 3, skewed tooth ring 2 meshes with helical gear 3 mutually, through skewed tooth ring 2 and helical gear 3's intermeshing, can drive all helical gear 3 synchronous rotations, helical gear 3 and lead screw 9 welded fastening, consequently helical gear 3's rotation drives lead screw 9 and closes the removal in the fixed orifices soon, realize the quick fixed and the.

In this embodiment, evenly distributed's smooth chamber is seted up to the surface of a fixed section of thick bamboo 1, it has briquetting 4 to slide to embed in the smooth chamber, the surface of a fixed section of thick bamboo 1 is stretched out to the one end of briquetting 4, the surface of a fixed section of thick bamboo 1 closes through the screw soon is provided with interior screw ring 6, the one end welded fastening of interior screw ring 6 has clamping ring 5, the internal surface of clamping ring 5 and the tip that stretches out of briquetting 4 all set up to the arc surface, briquetting 4 sticiss with clamping ring 5 mutually, it removes along a fixed section of thick bamboo 1 to rotate interior screw ring 6 can control clamping ring 5, can go deep to the inside slip of a fixed section of thick bamboo 1 with briquetting 4 along smooth chamber through the pressfitting of clamping ring 5, until the contact of the tip of the embedding of briquetting 4 and sticiss the connecting piece on the engine, realize the temporary fixation.

In this embodiment, the end portion of the embedded end of the pressing block 4 is provided with an arc chamfer, and the end portion of the extending end of the pressing block 4 is provided with a limiting block, so that the limiting block and the arc chamfer are arranged, and the pressing block 4 can be supported out when the fixing part on the fixing cylinder 1 and the airplane are inserted and connected, so that the installation of the equipment is not influenced.

In this embodiment, the outer surface of the internal thread ring 6 is provided with a blind hole 7, the inner surface of the blind hole 7 is provided with a thread groove, and the blind hole 7 with the thread groove is provided, so that the screw rod can be inserted by screwing to help rotate the internal thread ring 6.

In this embodiment, a gap of 2mm exists between the inner surface of the press ring 5 and the outer surface of the fixed cylinder 1, so that the movement of the press ring 5 does not wear the threads on the outer surface of the fixed cylinder 1.

In this embodiment, the end portion of the fixed cylinder 1 is fixedly provided with a buffer 10, the buffer 10 includes a first gasket 11, a second gasket 12, a sliding rod 13 and a return spring 14, the second gasket 12 is welded and fixed with the fixed cylinder 1, one end of the sliding rod 13 is slidably embedded into the second gasket 12, the other end is welded and fixed with the first gasket 11, the return spring 14 is slidably sleeved on the outer surface of the sliding rod 13, the buffer 10 is provided, so that a certain elasticity exists between the connecting piece of the fixed cylinder 1 and an engine, and the screwing is firmer and is not easy to shake to cause the lead screw 9 to loosen.

The utility model discloses a theory of operation and use flow: by arranging the helical gear rings 2 and the helical gears 3, a fixed rod with the helical gears 3 and a hand wheel is inserted between the two helical gear rings 2, so that the helical gears 3 are matched with the two helical gear rings 2, then the hand wheel is rotated to drive the two helical gear rings 2 to rotate relatively, all the helical gears 3 can be driven to synchronously rotate by the mutual engagement of the helical gear rings 2 and the helical gears 3, and the helical gears 3 and the lead screw 9 are welded and fixed, so that the lead screw 9 is driven to rotate and move in a screwing manner in the fixed hole by the rotation of the helical gears 3, the tail cover is quickly fixed and detached, compared with the way that the lead screw 9 is singly installed or detached by a wrench, the structure is simple to operate, the dismounting efficiency is greatly;

through setting up briquetting 4, clamping ring 5 and internal thread ring 6, it can control clamping ring 5 and remove along solid fixed cylinder 1 to rotate internal thread ring 6, can go deep into briquetting 4 along sliding chamber to the inside slip of solid fixed cylinder 1 through the pressfitting of clamping ring 5 to briquetting 4, until the embedded end tip contact of briquetting 4 and sticis the connecting piece on the engine, realize the temporary fixation to solid fixed cylinder 1, it makes its accuracy close fixedly soon to be convenient for operate skewed tooth ring 2, the setting has blind hole 7 of thread groove, be convenient for insert the screw rod through closing soon in order to help and rotate internal thread ring 6, through setting up the clearance, make the removal of clamping ring 5 can not wear and tear the screw thread of solid fixed cylinder 1 surface.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an aircraft engine tail cover convenient to installation, includes a fixed section of thick bamboo (1) and tail cover main part (8), a fixed section of thick bamboo (1) is solid as an organic whole with tail cover main part (8), its characterized in that: the utility model discloses a fixed cylinder for the motor vehicle, including a fixed cylinder (1), the surface of fixed cylinder (1) is seted up evenly distributed's fixed orifices, it is provided with lead screw (9) to close soon through the screw thread in the fixed orifices, the tip of lead screw (9) stretches out the surface of fixed cylinder (1), and stretches out end fixing and be provided with helical gear (3), the surface of fixed cylinder (1) is equipped with two skewed tooth rings (2) through the bearing fixed cover, and the symmetric distribution is in the both sides of helical gear (3), skewed tooth ring (2) mesh with helical gear (3).

2. An aircraft engine tail cover for ease of installation according to claim 1, wherein: evenly distributed's smooth chamber is seted up to the surface of solid fixed cylinder (1), it has briquetting (4) to slide the embedding in the chamber, the surface of solid fixed cylinder (1) is stretched out to the one end of briquetting (4), the surface of solid fixed cylinder (1) closes soon through the screw thread and is provided with interior screw ring (6), the one end welded fastening of interior screw ring (6) has clamping ring (5), the internal surface of clamping ring (5) and the end tip that stretches out of briquetting (4) all set up to the arc surface, briquetting (4) sticiss with clamping ring (5) mutually.

3. An aircraft engine tail cover for ease of installation according to claim 2, wherein: the end part of the embedded end of the pressing block (4) is provided with an arc chamfer, and the end part of the extending end of the pressing block (4) is provided with a limiting block.

4. An aircraft engine tail cover for ease of installation according to claim 2, wherein: the outer surface of the internal thread ring (6) is provided with a blind hole (7), and the inner surface of the blind hole (7) is provided with a thread groove.

5. An aircraft engine tail cover for ease of installation according to claim 2, wherein: a gap of 1-2mm exists between the inner surface of the compression ring (5) and the outer surface of the fixed cylinder (1).

6. An aircraft engine tail cover for ease of installation according to claim 1, wherein: the fixed bolster (10) that is provided with of tip of solid fixed cylinder (1), bolster (10) include first gasket (11), second gasket (12), slide bar (13) and reset spring (14), second gasket (12) and solid fixed cylinder (1) welded fastening, in the one end of slide bar (13) slides and imbeds second gasket (12), the other end and first gasket (11) welded fastening, reset spring (14) slip cover is established at the surface of slide bar (13).