CN217572730U - Assembly quality of aeroengine nozzle end cap - Google Patents
Assembly quality of aeroengine nozzle end cap Download PDFInfo
- Publication number
- CN217572730U CN217572730U CN202221533358.7U CN202221533358U CN217572730U CN 217572730 U CN217572730 U CN 217572730U CN 202221533358 U CN202221533358 U CN 202221533358U CN 217572730 U CN217572730 U CN 217572730U
- Authority
- CN
- China
- Prior art keywords
- plug
- threaded
- nozzle
- mounting hole
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses an assembly quality of aeroengine nozzle end cap, include: the plug fixing device is arranged between the threaded ejector rod and the positioning blind hole; the threaded mandril is in threaded connection with the body, and the plug fixing device is detachably connected with the body; the plug is installed on the plug fixing device, the bottom of the nozzle is installed in the positioning blind hole, the plug is located right above the nozzle, and the threaded ejector rod is located right above the plug. The body is C shape structure, and end cap fixing device includes the mount pad, is provided with the vertical end cap mounting hole that runs through it on the mount pad, and the same high department installs at least three spring knock pin in the circumference of end cap mounting hole, and the bulb of every spring knock pin is located the end cap mounting hole, and the bulb portion bit length that all spring knock pins are located the end cap mounting hole is unanimous. By using the method of providing pressure by the screw thread, the impact load is small and sufficient fitting pressure can be provided.
Description
Technical Field
The utility model belongs to aeroengine assembly field relates to an assembly quality of aeroengine nozzle end cap.
Background
When a nozzle of a combustion chamber assembly of an aircraft engine is assembled, a plug is required to be installed. The plug structure is a short cylindrical pin, the assembly mode is cold assembly, and the plug is cooled by liquid nitrogen; after the plug is cooled and contracted, knocking the plug into the nozzle by using a hammer knocking mode; and when the temperature of the plug returns to the room temperature, the plug expands to realize the interference fit assembly with the nozzle.
The assembly processes currently used have the following problems: the plug is a cylindrical pin with the diameter of 4 multiplied by 5, and after the pin is cooled for 15 minutes by using liquid nitrogen, the plug is clamped out by using tweezers and starts to be assembled. Due to the fact that knocking force is too large, the tweezers cannot apply enough clamping force, the plug falls into the engine in the knocking process, once the plug cannot be taken out smoothly, the engine needs to be disassembled or the plug is lost inside the engine, and serious accidents of engine damage can be caused. Secondly, the engine combustion chamber is a welding structure assembly, the nozzle is fixed to the engine combustion chamber through a cross beam, instantaneous load generated by knocking assembly is too large, and parts with low welding strength can be damaged.
Disclosure of Invention
An object of the utility model is to provide an assembly quality of aeroengine nozzle end cap to solve present end cap length short not convenient for the centre gripping and result in the end cap to drop into the problem in the engine easily, and strike the assembly and can cause the not high position of welding strength between nozzle and the engine combustion chamber to harm the problem.
The embodiment of the utility model provides an adopted technical scheme is: an assembly quality of aeroengine nozzle end cap includes:
the bottom of the body is provided with a round positioning blind hole;
the threaded ejector rod is vertically arranged at the top of the body;
the plug fixing device is arranged between the threaded ejector rod and the positioning blind hole;
wherein:
the threaded mandril is in threaded connection with the body, and the plug fixing device is fixedly connected with the body;
the plug is installed on the plug fixing device, the bottom of the nozzle is installed in the positioning blind hole, the plug is located right above the nozzle, and the threaded ejector rod is located right above the plug.
Further, the body is of a C-shaped structure;
the plug fixing device is detachably connected with the body.
Furthermore, a plug mounting hole is formed in the plug fixing device, the plug mounting hole is a vertical through hole, and the plug is mounted in the plug mounting hole.
Further, the plug fixing device comprises a mounting seat;
the mounting seat is arranged between the threaded ejector rod and the positioning blind hole and is detachably connected with the body;
and a plug mounting hole vertically penetrating through the mounting seat is formed in the mounting seat.
Further, a plug clamping device is arranged in the plug mounting hole.
Furthermore, at least three spring ejector pins are arranged at the same height in the circumferential direction of the plug mounting hole;
the ball head of each spring ejector pin is positioned in the plug mounting hole, and the lengths of the ball head parts of all the spring ejector pins positioned in the plug mounting holes are consistent.
Furthermore, at least three threaded through holes are uniformly distributed at the same height in the circumferential direction of the plug mounting hole, and each threaded through hole is internally threaded with a spring ejector pin.
Furthermore, a cushion block is placed in a positioning blind hole at the bottom of the body, and the bottom of the nozzle is in contact with the cushion block.
Furthermore, a torsion bar is arranged on the threaded ejector rod and is positioned above the body.
Furthermore, the cushion block is a nylon block.
The embodiment of the utility model provides a beneficial effect is: through the cooperation of the threaded hole and the threaded ejector rod, the method of providing pressure through threads is adopted, the impact load is small, enough assembly pressure can be provided, the problem that the part with low welding strength between the nozzle and the engine combustion chamber is damaged due to the impact load generated by knocking assembly is avoided, the plug is fixed through the mounting seat and the plug clamping device in the plug mounting hole, and the problem that the plug falls into an engine easily due to the fact that the plug is too short and is not convenient to clamp in the mode of knocking assembly through tweezers to clamp the plug is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is the utility model discloses an assembly quality sketch map of aeroengine nozzle end cap.
Fig. 2 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.
In the figure, 1, a plug, 2, a nozzle, 3, a body, 4, a threaded ejector rod, 5, a torsion rod, 6, a cushion block, 7, a mounting seat, 8, a spring ejector pin and 9, a stop pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
The embodiment provides an assembly quality of aeroengine nozzle end cap, as shown in fig. 1, includes:
the nozzle body 3 is of a C-shaped structure, so that the nozzle 2 can be avoided and the hand-held operation is facilitated, and a circular positioning blind hole is formed in the bottom of the body 3 and used for positioning the bottom of the nozzle 2;
the threaded ejector rod 4 is vertically arranged in the mounting through hole in the top of the body 3;
the plug fixing device is arranged between the threaded ejector rod 4 and the positioning blind hole;
wherein:
the threaded ejector rod 4 is in threaded connection with the mounting through hole in the top of the body 3, and the threaded ejector rod 4 is matched with the mounting through hole in threaded connection with the threaded ejector rod to apply force to assemble the plug 1;
the plug fixing device is fixedly connected with the body 3, the plug 1 is installed on the plug fixing device, the bottom of the nozzle 2 is installed in the positioning blind hole, the plug 1 is located right above the nozzle 2, and the threaded ejector rod 4 is located right above the plug 1.
In some embodiments, the plug fixture is removably attached to the body 3.
In some embodiments, a plug mounting hole is formed in the plug fixing device, the plug mounting hole is a vertical through hole, and the plug 1 is mounted in the plug mounting hole.
During assembly, the plug 1 is firstly installed in the plug installation hole on the plug fixing device, then the device is installed at the nozzle 2, and finally the threaded ejector rod 4 is rotated to enable the threaded ejector rod to press the plug 1 downwards, force is gradually applied, the plug 1 is pressed into the assembly hole of the nozzle 2, and assembly is completed.
In some embodiments, the plug fixing device comprises a mounting seat 7, the mounting seat 7 is arranged between the threaded mandril 4 and the positioning blind hole and is detachably connected with the body 3, and a plug mounting hole vertically penetrating through the mounting seat 7 is formed in the mounting seat 7 and used for mounting the plug 1.
In some embodiments, a plug clamping device is disposed within the plug mounting hole.
In some embodiments, at least three spring top pins 8 are installed at the same height in the circumferential direction of the plug installation hole, the ball head of each spring top pin 8 is located in the plug installation hole, the length of the ball head part of each spring top pin 8 located in the plug installation hole is consistent, the top ball head of each spring top pin 8 is adjustable in position, and the ball heads of all spring top pins 8 clamp the plug 1 under the action of the internal spring of the plug 1 and are automatically centered.
In some embodiments, at least three threaded through holes are uniformly distributed at the same height in the circumferential direction of the plug mounting hole, the spring ejector pins 8 are in one-to-one threaded connection with the threaded through holes, as shown in fig. 2, the threaded through holes are used for facilitating installation of the spring ejector pins 8, and also facilitating adjustment of the length of the ball head part of the spring ejector pins 8 in the plug mounting hole.
In some embodiments, a cushion block 6 is placed in a positioning blind hole at the bottom of the body 3, and the bottom of the nozzle 2 is in contact with the cushion block 6, so that the nozzle 2 is prevented from being crushed during assembly stress.
In some embodiments, the spacer 6 is a nylon block.
In some embodiments, the upper part of the threaded mandril 4 is provided with a torsion bar 5, the torsion bar 5 is positioned above the body 3, the torsion bar 5 is used for increasing the moment when the threaded mandril 4 is manually rotated, and the force application arm when the threaded mandril 4 is rotated is prolonged by utilizing the lever principle, so that the operation is convenient.
In some embodiments, as shown in fig. 1, the torsion bar 5 transversely penetrates through the threaded post rod 4, and then a stop pin 9 vertically inserted into the torsion bar 5 is arranged on the side surface of the threaded post rod 4 to limit the torsion bar 5 from moving in the threaded post rod 4, so as to ensure that the torsion bar 5 and the threaded post rod 4 move integrally and prevent the torsion bar 5 from falling off.
In some embodiments, the mounting seat 7 is mounted on the body 3 by a dowel pin and fixed using screws.
This embodiment is through the cooperation of screw ejector pin 4 and rather than threaded connection's installation through-hole, adopt the screw to provide the method of pressure and carry out the installation of end cap 1, impact load is little and can provide sufficient assembly pressure, the problem of the not high position of welding strength between nozzle 2 and the engine combustion chamber that the impact load that has avoided knocking the assembly production destroys, and carry out the centre gripping through mount pad 7 and spring knock pin 8 in the end cap mounting hole to end cap 1 and fix, therefore it is difficult for the centre gripping to have avoided end cap 1 length short to adopt tweezers centre gripping end cap 1 to beat the problem that the mode of assembly leads to end cap 1 to drop into the engine easily.
The bottom of the body 3 is placed at the bottom of the nozzle 2 of the combustion chamber, the thread ejector rod 4 receives the reaction force of the assembling pressure of the plug 1 during assembling, the bottom of the body 3 provides the same force guaranteeing force balance for the nozzle 2, and the bottom of the body 3 is a stressed object, so that the nylon cushion block 6 is added to the part to prevent the nozzle 2 from being crushed.
The above description 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 shall fall within the protection scope of the present invention.
Claims (10)
1. An assembly quality of aeroengine nozzle end cap, its characterized in that includes:
the bottom of the body (3) is provided with a round positioning blind hole;
the threaded ejector rod (4), the threaded ejector rod (4) is vertically installed on the top of the body (3);
the plug fixing device is arranged between the threaded ejector rod (4) and the positioning blind hole;
wherein:
the threaded mandril (4) is in threaded connection with the body (3), and the plug fixing device is fixedly connected with the body (3);
the plug (1) is installed on the plug fixing device, the bottom of the nozzle (2) is installed in the positioning blind hole, the plug (1) is located right above the nozzle (2), and the threaded ejector rod (4) is located right above the plug (1).
2. An assembly device for an aircraft engine nozzle plug according to claim 1, characterised in that the body (3) is of C-shaped configuration;
the plug fixing device is detachably connected with the body (3).
3. The assembly device of the aircraft engine nozzle plug as claimed in claim 1, wherein the plug fixing device is provided with a plug mounting hole, the plug mounting hole is a vertical through hole, and the plug (1) is mounted in the plug mounting hole.
4. An assembly device of an aircraft engine nozzle plug according to claim 1, characterised in that the plug fixing means comprise a mounting seat (7);
the mounting seat (7) is arranged between the threaded ejector rod (4) and the positioning blind hole and is detachably connected with the body (3);
and a plug mounting hole vertically penetrating through the mounting seat (7) is formed in the mounting seat.
5. The assembly device of an aircraft engine nozzle plug as claimed in claim 3 or 4, wherein a plug clamping device is arranged in the plug mounting hole.
6. The assembly device of an aircraft engine nozzle plug as claimed in claim 3 or 4, wherein at least three spring ejector pins (8) are mounted at the same height in the circumferential direction of the plug mounting hole;
the ball head of each spring ejector pin (8) is positioned in the plug mounting hole, and the length of the ball head part of each spring ejector pin (8) positioned in the plug mounting hole is consistent.
7. The assembly device of an aircraft engine nozzle plug according to claim 6, wherein at least three threaded through holes are uniformly distributed at the same height in the circumferential direction of the plug mounting hole, and each threaded through hole is internally threaded with a spring ejector pin (8).
8. An aircraft engine nozzle plug mounting arrangement according to any one of claims 1~4 or 7, wherein the spacer (6) is located in a locating blind hole in the bottom of the body (3) and the bottom of the nozzle (2) contacts the spacer (6).
9. An aircraft engine nozzle plug mounting arrangement according to any one of claims 1~4 or 7, wherein the threaded ram (4) has a torsion bar (5) mounted thereon, the torsion bar (5) being located above the body (3).
10. The assembly device of an aircraft engine nozzle plug according to 1~4 or 7 wherein the spacer (6) is a nylon block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221533358.7U CN217572730U (en) | 2022-06-20 | 2022-06-20 | Assembly quality of aeroengine nozzle end cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221533358.7U CN217572730U (en) | 2022-06-20 | 2022-06-20 | Assembly quality of aeroengine nozzle end cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217572730U true CN217572730U (en) | 2022-10-14 |
Family
ID=83529834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221533358.7U Active CN217572730U (en) | 2022-06-20 | 2022-06-20 | Assembly quality of aeroengine nozzle end cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217572730U (en) |
-
2022
- 2022-06-20 CN CN202221533358.7U patent/CN217572730U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211439686U (en) | Flexible ejector pin type self-adaptive clamp module | |
| CN217572730U (en) | Assembly quality of aeroengine nozzle end cap | |
| CN211855795U (en) | Clamp for wing test | |
| CN218396703U (en) | Battery module welding tool | |
| CN216227734U (en) | Following type positioning tool for welding side beam of bogie of railway vehicle | |
| CN112157445A (en) | Workpiece clamping device for numerical control machine tool | |
| CN110842856A (en) | Tool for installing positioning pin on main bearing seat of cylinder body | |
| CN113681316B (en) | Clamp for hardware processing machine tool | |
| CN211515873U (en) | Valve seat sealing conical surface forming tool | |
| CN110815078B (en) | Undercarriage strut test clamping device and method | |
| CN212665476U (en) | Tight structure in top of leading hoof riveting spot facing work in stopper | |
| CN213675450U (en) | Reducing tool for automobile straight-tube rubber bushing | |
| CN220575274U (en) | Integrated positioning mechanism of valve body processing | |
| CN215492317U (en) | Propeller blade rigidity test device | |
| CN220805938U (en) | Laser station cutting clamp for arc plate with flanging | |
| CN212020630U (en) | Bearing press-fitting tool | |
| CN213889858U (en) | Spring assembly fixture | |
| CN217801756U (en) | Automatic system shell manipulator is with adjustable quick fixture | |
| CN220652554U (en) | Pressure riveting device for pressure riveting radio frequency cable plug end cover | |
| CN219925086U (en) | Tool for welding radio frequency insulator | |
| CN216576796U (en) | Die-casting fixture device | |
| CN216991751U (en) | Cable subassembly connector tail annex screws up frock | |
| CN220960970U (en) | Inspection mechanism for handle strength of small steel bottle | |
| CN216803217U (en) | Frock is used in atomizer assembly | |
| CN215848605U (en) | Flexible printed circuit board micropore drilling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |