Multi-directional multi-stage automatic locking nozzle device and aero-engine comprising same

Abstract

The invention provides a multidirectional multistage automatic locking nozzle device and an aero-engine comprising the multidirectional multistage automatic locking nozzle device, the multidirectional multistage automatic locking nozzle device comprises a mounting base and a first nozzle, one end of the first nozzle is sleeved with a first spring and is mounted in the mounting base, and the other end of the first nozzle is sleeved with a second spring; one end part of the first nozzle is meshed with the mounting seat through positioning teeth, so that the first nozzle rotates in the mounting seat, and free circumferential positioning is realized. The lubricating oil spraying device can provide a lubricating oil spraying function for the gear box so as to provide the running stability and reliability of the transmission gear box. The positioning mode of a traditional transmission gear box lubricating oil nozzle is broken through, single spraying of the nozzle can be converted into circumferential free rotation, axial positioning is converted into a spring and check ring matched automatic locking mode with a better effect, and a new thought is developed for the universal nozzle positioning spraying mode of a gear box.

Description

Technical Field

[0001] The invention relates to the field of lubrication and cooling of aircraft engines, and in particular to a multi-directional and multi-stage automatic locking nozzle device and an aircraft engine comprising the same. Background Art

[0002] In the prior art, aircraft engines, as the power device of aircraft, are one of the determining factors of aircraft performance and are known as the heart of the aircraft. As the power source of aircraft engines, the transmission system must not only transmit torque but also axial force and even radial force and other loads.

[0003] Among them, the transmission gearbox is a key component of the aircraft engine. As a kinetic energy conversion device, it is used to drive the normal operation of the engine and aircraft's starting system, fuel system, lubricating oil system, power generation system, hydraulic system and other major accessories. Its performance directly affects the operation of the aircraft engine.

[0004] Entering the 21st century, the development of aircraft engines is accelerating further, which will bring new and greater changes to the human aviation field. At present, the transmission of aircraft engines is developing towards gear transmission engines, variable cycle engines, multi-electric engines, intercooled regenerative engines and open rotor engines.

[0005] With the continuous improvement of aircraft engine performance indicators, high reliability, low fuel consumption and high thrust-to-weight ratio, the speed and input power of the rotating parts of the gearbox components are getting higher and higher. The transmission gearbox mainly adopts the gear meshing and spline matching structure.

[0006] When the transmission system is working, the high-speed rotating gears, bearings, splines and other rotor parts will generate a lot of heat due to friction. If the heat is not discharged in time, it will accelerate the wear of parts and reduce the service life. In severe cases, it will cause parts failure and endanger the safe operation of the engine and even the aircraft. Therefore, a safe and reliable lubrication and cooling mechanism in the transmission system is an important guarantee for the safe operation of the engine and aircraft.

[0007] The mainstream lubrication and cooling structure used in gearbox accessories of traditional structure is the nozzle structure. One end of the nozzle is connected to the lubricating oil pipeline (with a mounting positioning hole), and the other end is processed with one or more spray holes with a fixed aperture and a fixed length-to-diameter ratio designed based on the oil supply pressure, spray position and lubricating oil demand. The lubricating oil enters the nozzle from the lubricating oil inlet, and then is sprayed to the specified position through the spray hole, thereby achieving lubrication and cooling of the specified position.

[0008] The traditional lubricating oil nozzle has the disadvantages of high processing cost, complex installation process, difficult disassembly, high replacement cost, weak workpiece independence, etc. At the same time, it also has problems such as long processing time, harsh operating space conditions, and inaccurate positioning.

[0009] The transmission system is an important power source for aircraft engines. As the load and speed of the engine continue to increase, the speed of each rotating part in the gearbox will also increase accordingly. The high-speed rotating gears, bearings, splines and other rotor parts will generate a lot of heat due to friction.

[0010] In view of this, the inventor of the present application has designed a multi-directional and multi-stage automatic locking nozzle device and an aircraft engine including the same, in order to overcome the above-mentioned technical problems. Summary of the invention

[0011] The technical problem to be solved by the present invention is to overcome the defects of the conventional lubricating oil nozzle in the prior art such as high processing cost, complicated installation process and high disassembly cost, and to provide a multi-directional multi-stage automatic locking nozzle device and an aircraft engine including the same.

[0012] The present invention solves the above technical problems through the following technical solutions:

[0013] A multi-directional, multi-stage automatic locking nozzle device is used in an aircraft engine transmission system. Its characteristics are that the multi-directional, multi-stage automatic locking nozzle device includes a mounting seat and a first nozzle. One end of the first nozzle is sleeved with a first spring and installed in the mounting seat. One end of the first nozzle is engaged with the mounting seat through positioning teeth, so that the first nozzle can rotate in the mounting seat to achieve free circumferential positioning.

[0014] According to one embodiment of the present invention, the multi-directional and multi-stage automatic locking nozzle device also includes a second nozzle, the other end of the first nozzle is provided with an installation cavity, one end of the second nozzle is sleeved with a second spring and installed in the installation cavity, one end of the second nozzle is engaged with the installation cavity through positioning teeth, so that the second nozzle can rotate in the installation cavity to achieve free circumferential positioning.

[0015] According to one embodiment of the present invention, a step portion is provided at one end of the first nozzle, a first positioning tooth is provided on the outer wall surface of the step portion, a first tooth matching portion is provided on the inner wall surface of the mounting seat, and the first positioning tooth and the first tooth matching portion are matched and connected with each other.

[0016] According to one embodiment of the present invention, a second positioning tooth is provided at one end of the second nozzle, a second tooth matching portion is provided at the bottom wall of the mounting cavity, and the second positioning tooth and the second tooth matching portion are matched and connected to each other.

[0017] According to an embodiment of the present invention, the first spring is a wave spring.

[0018] According to an embodiment of the present invention, a groove is formed on the inner wall surface of the mounting seat, a first retaining ring is arranged in the groove, and the first retaining ring is located on the upper part of the step portion to prevent the first nozzle from being displaced in the axial direction.

[0019] According to an embodiment of the present invention, a second retaining ring is provided on the inner wall surface of the installation cavity, and the second retaining ring is located on the upper part of the second spring to prevent the second nozzle from being displaced in the axial direction.

[0020] According to one embodiment of the present invention, a first rubber ring is further provided at one end of the first nozzle, installed between the first nozzle and the mounting seat and located at the lower part of the first spring;

[0021] A second rubber ring is also provided at one end of the second nozzle, installed between the second nozzle and the installation cavity, and located at the lower part of the second spring.

[0022] According to an embodiment of the present invention, scales are provided on the first nozzle and the second nozzle, and scales are provided on the upper end surface of the mounting seat.

[0023] The present invention also provides an aircraft engine, which is characterized in that the aircraft engine includes the multi-directional multi-stage automatic locking nozzle device as described above.

[0024] The positive and progressive effects of the present invention are:

[0025] The multi-directional multi-stage automatic locking nozzle device of the present invention and the aircraft engine including the same can provide the gearbox with a lubricating oil injection function to provide stability and reliability in the operation of the transmission gearbox. It has the following advantages:

[0026] 1. It breaks through the traditional positioning method of the transmission gearbox oil nozzle, and can transform the single nozzle spray into a circumferential free rotation, and the axial positioning into a more effective spring plus retaining ring with automatic locking method, which opens up a new idea for the positioning and spraying form of the universal nozzle of the gearbox;

[0027] Second, a new method of adjusting the spray direction is proposed. The nozzle is assembled on the casing through the circumferential tooth matching, and then with the spring locking device, the relative position between the nozzle and the casing is kept absolutely still, eliminating the axial movement of the nozzle relative to the casing;

[0028] 3. The multi-directional multi-stage automatic locking nozzle device is divided into multi-stage injection, and the injection directions of the two stages can be adjusted independently. In addition, each stage of the nozzle has 36 circumferential teeth, which can fine-tune the injection angle and inject the lubricating oil more accurately.

[0029] Fourth, the multi-directional multi-stage automatic locking nozzle device has two relatively independent stages, and the nozzles of each stage can be replaced at will, with strong interchangeability, and a series of nozzle products can be produced in a standardized manner;

[0030] 5. The multi-directional multi-stage automatic locking nozzle device is simple to process, easy to assemble, and easy to replace. After installation, the position of the nozzle's spraying direction can be adjusted, shortening the installation time and improving the working stability of the nozzle;

[0031] 6. The multi-directional multi-stage automatic locking nozzle device can avoid the situation where the loosening of components causes the device to fail even under high-speed operation conditions, thereby improving the reliability of the fuel injection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always represent the same features, wherein:

[0033] Figure 1 Schematic diagram of a conventional transmission rod positioning device Figure 1 .

[0034] Figure 2 Schematic diagram of a conventional transmission rod positioning device Figure 2 .

[0035] Figure 3 It is a schematic structural diagram of the multi-directional and multi-stage automatic locking nozzle device of the present invention.

[0036] Figure 4 It is a schematic structural diagram of the first nozzle in the multi-directional multi-stage automatic locking nozzle device of the present invention.

[0037] Figure 5 It is an axial cross-sectional view of the first nozzle in the multi-directional multi-stage automatic locking nozzle device of the present invention.

[0038] Figure 6 It is a schematic structural diagram of a mounting seat in the multi-directional and multi-stage automatic locking nozzle device of the present invention.

[0039] Figure 7 Schematic diagram of the assembly of the first nozzle and the mounting seat in the multi-directional multi-stage automatic locking nozzle device of the present invention Figure 1 .

[0040] Figure 8 Schematic diagram of the assembly of the first nozzle and the mounting seat in the multi-directional multi-stage automatic locking nozzle device of the present invention Figure 2 .

[0041] Fig. 9 It is a schematic structural diagram of the second nozzle in the multi-directional multi-stage automatic locking nozzle device of the present invention.

[0042] Fig.10 It is an axial cross-sectional view of the second nozzle in the multi-directional multi-stage automatic locking nozzle device of the present invention.

[0043] Fig.11 It is a schematic diagram of the assembly of the first nozzle and the second nozzle in the multi-directional multi-stage automatic locking nozzle device of the present invention.

[0044] Fig.12 The multi-directional multi-stage automatic locking nozzle device of the present invention is a three-dimensional Figure 1 .

[0045] Fig.13 The multi-directional multi-stage automatic locking nozzle device of the present invention is a three-dimensional Figure 2 .

[0046] Fig.14 It is an axial cross-sectional view of the multi-directional multi-stage automatic locking nozzle device of the present invention.

[0047] Fig.15 It is a schematic diagram of the scale on the first nozzle in the multi-directional multi-stage automatic locking nozzle device of the present invention.

[0048] Fig.16 It is a schematic diagram of the scale on the mounting seat in the multi-directional and multi-stage automatic locking nozzle device of the present invention.

[0049] Fig.17 It is a schematic diagram of the scale on the second nozzle in the multi-directional multi-stage automatic locking nozzle device of the present invention. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0051] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to preferred embodiments of the present invention, examples of which are shown in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0052] Furthermore, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the present invention specification may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this document.

[0053] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings connoted by each term.

[0054] like Figure 1 and Figure 2As shown, in a conventional transmission gearbox, the mounting seat 10 and the nozzle 20 are matched, and the nozzle 20 and the gear shaft 30 are positioned by clearance fixing, and they cannot rotate freely in the circumferential direction after assembly.

[0055] In the traditional gearbox, there is no fuel injector with adjustable direction. Therefore, after the fuel injector is installed, the circumference of the spray point of the fuel injector cannot be adjusted. Only one fuel injector can be set for each spray point. It cannot be universally replaced and the economic cost is very high.

[0056] like Figures 3 to 14 As shown, the present invention discloses a multi-directional multi-stage automatic locking nozzle device for an aircraft engine transmission system, which includes a mounting seat 10 and a first nozzle 100, and a first spring 200 is sleeved on one end of the first nozzle 100 and installed in the mounting seat 10. One end of the first nozzle 100 is engaged with the mounting seat 10 through positioning teeth, so that the first nozzle 100 rotates in the mounting seat 10 to achieve free circumferential positioning. The first spring 200 here can preferably be a wave spring.

[0057] like Figures 4 to 8 As shown, a step portion 110 is provided at one end of the first nozzle 100, and a first positioning tooth 120 is provided on the outer wall surface of the step portion 110. A first tooth matching portion 11 is provided on the inner wall surface of the mounting seat 10, and the first positioning tooth 120 and the first tooth matching portion 11 are matched and connected with each other.

[0058] In addition, a groove 12 is provided on the inner wall surface of the mounting seat 10, and a first retaining ring 300 is disposed in the groove 12. The first retaining ring 300 is located on the upper part of the step portion 110, and is used to prevent the first nozzle 100 from being displaced in the axial direction.

[0059] A first rubber ring 130 is further provided at one end of the first nozzle 100 , which is installed between the first nozzle 100 and the mounting seat 10 and located below the first spring 200 .

[0060] like Figures 9 to 11 As shown, the multi-directional multi-stage automatic locking nozzle device further includes a second nozzle 400. A mounting cavity 140 is provided at the other end of the first nozzle 100. A second spring 500 is sleeved on one end of the second nozzle 400 and installed in the mounting cavity 140. One end of the second nozzle 400 is engaged with the mounting cavity 140 through positioning teeth, so that the second nozzle 400 rotates in the mounting cavity 140 to achieve free circumferential positioning.

[0061] Preferably, a second positioning tooth 410 is provided at one end of the second nozzle 400 , a second tooth matching portion 141 is provided on the bottom wall of the installation cavity 140 , and the second positioning tooth 410 and the second tooth matching portion 141 are matched and connected with each other.

[0062] Furthermore, a second retaining ring 600 is disposed on the inner wall surface of the installation cavity 140 . The second retaining ring 600 is located on the upper portion of the second spring 500 and is used to prevent the second nozzle 400 from being displaced in the axial direction.

[0063] A second rubber ring 420 is further provided at one end of the second nozzle 400 , installed between the second nozzle 400 and the installation cavity 140 , and located below the second spring 500 .

[0064] like Figures 15 to 17 As shown, preferably, scales are provided on the first nozzle 100 and the second nozzle 400, and a scale is provided on the upper end surface of the mounting seat 10. According to the design technical requirements or the actual situation, it can be rotated in the corresponding circumferential direction according to the scale line value corresponding to the space during the assembly process to achieve the effect of precise injection positioning.

[0065] The present invention also provides an aircraft engine, which is characterized in that the aircraft engine includes the multi-directional multi-stage automatic locking nozzle device as described above.

[0066] According to the above structural description, the multi-directional and multi-stage automatic locking nozzle device of the present invention is mainly composed of four parts. The first part is the first nozzle 100 and the second nozzle 400. Both nozzle bodies have positioning teeth, which can be freely positioned circumferentially by rotating the nozzles, without the need to change the nozzle body (nozzle direction) for assembly and positioning. The second part is the first spring 200 and the second spring 500, which are assembled between the nozzle body and the retaining ring to provide continuous elastic force to lock the position of the nozzle body and prevent axial movement. The third part is the first retaining ring 300 and the second retaining ring 600, which are assembled on the inner side of the mounting seat and cooperate with the spring to prevent the nozzle body from shifting in the axial direction. The blocking is convenient and reliable, and has strong stability. The fourth part is the first rubber ring 130 and the second rubber ring 420, which are assembled between the nozzle body and the mounting seat to play a sealing role.

[0067] After adopting the multi-directional multi-stage automatic locking nozzle device of the present invention, the second nozzle 400 can be rotated in the circumferential direction during assembly. For example, when installing the first nozzle 100, first, the lower end surface of the nozzle body of the first nozzle 100 (the first rubber ring 130 is already assembled) is assembled with the wave spring 202 (i.e., the first spring 200), and then placed together in the mounting seat 10 (positioning teeth and matching). Then, the first retaining ring 130 is assembled (to prevent the first nozzle 100 from axially slipping off).

[0068] Secondly, if the circumferential direction of the spraying is to be adjusted, the first nozzle 100 is first pressed down axially to disengage the nozzle body and the teeth on the mounting seat 10 axially, and then the first nozzle 100 is rotated to a suitable position according to the requirements, and the axial force on the first nozzle 100 is cancelled, so that it can re-engage with the teeth of the mounting seat 10 under the action of the wave spring, so that it can spray the lubricating oil more accurately, and the installation is convenient, and the circumferential position of the spraying can be accurately located. In this way, it can ensure that the design and the actual object can correspond, and effectively save production costs.

[0069] Furthermore, after adopting the multi-directional multi-stage automatic locking nozzle device of the present invention, the second nozzle 400 can be rotated in the circumferential direction during assembly, for example: to install the second nozzle 400, first, the lower end surface of the nozzle body of the second nozzle 400 (the second rubber ring 420 is already assembled) is assembled with the second spring 500, and then placed together in the first nozzle 100 (positioning teeth and matching). Then the second retaining ring 600 is assembled (to prevent the second nozzle 400 from axially slipping off).

[0070] Secondly, if the circumferential direction of the spraying is to be adjusted, since the teeth of the second nozzle 400 and the first nozzle 100 are in the form of sliding flat teeth, the second nozzle 400 can be directly rotated (towards the teeth direction) to make the teeth on the second nozzle 400 and the first nozzle 100 axially disjointed. After the second nozzle 400 is rotated to a suitable position according to the needs, the circumferential force on the second nozzle 400 is canceled, so that it can re-engage with the teeth of the first nozzle 100 under the action of the spring, so that it can spray the lubricating oil more accurately, and the installation is convenient, and the circumferential position of the spraying can be accurately positioned, ensuring that the design and the actual object can correspond, and effectively saving production costs.

[0071] Furthermore, after adopting the multi-directional multi-stage automatic locking nozzle device of the present invention, the first nozzle 100 and the second nozzle 400 composed of two stages can both be independently rotated in the circumferential direction during assembly. According to actual needs, the first nozzle 100 is rotated in the circumferential direction to accurately locate the spraying direction, and then the second nozzle 400 is rotated in the circumferential direction to accurately locate the spraying direction. The two nozzles have the characteristics of strong relative independence, strong versatility and strong interchangeability.

[0072] After adopting the multi-directional multi-stage automatic locking nozzle device of the present invention, since the two-stage nozzle or the multi-stage nozzle can rotate independently in the circumferential direction, the nozzle assembly of this structure can be produced in a standardized manner, the engine can select the shelf product according to the design requirements, the research and development cycle is shortened, the research and development cost can be greatly reduced, the versatility is strong, the application of the product is guaranteed, and the risk is reduced.

[0073] After adopting the multi-directional multi-stage automatic locking nozzle device of the present invention, the oil injection nozzle device of the gearbox is different from the traditional solution. In the traditional gearbox, the D-type anti-rotation method is mostly used for positioning. Each oil injection nozzle is limited to one injection point position, and the spray direction cannot be changed. There are certain requirements for the processing difficulty and precision of the oil nozzle. The installation process is complicated, and it is easy to be installed in place. The repeated disassembly process is complicated and easy to be damaged. However, the processing technology of the multi-directional multi-stage automatic locking nozzle device of the present invention is solidified and mature, and the matching parts of the mounting parts matched with it are highly versatile, easy to install, and can be disassembled repeatedly.

[0074] In the multi-directional multi-stage automatic locking nozzle device, the positioning device (installation without bolts) can reasonably utilize the internal space of the shaft, effectively save the space of the gear box, facilitate the circulation of the lubricating oil of the gear box and reduce the splashing of the lubricating oil, thereby effectively reducing the temperature of the gear box.

[0075] Since the device adopts a spring structure for fastening, it can perform axial positioning in real time and better prevent loosening. At the same time, due to the spring structure, it is more convenient and reliable during loading and unloading, thus effectively reducing the risk of damage caused by repeated loading and unloading of related parts.

[0076] In addition, since the circumferential positioning method of the device adopts a toothed (partial) structure, the spray direction of the oil nozzle can be adjusted and positioned according to the actual situation, so as to better locate the lubricating oil injection point. At the same time, due to the circumferential toothed structure, the spray direction can be rotated 360°, and the adjustment of the spray direction is more convenient and reliable, thereby effectively reducing the risk of damage caused by repeated loading and unloading of related parts.

[0077] Furthermore, since the circumferential positioning method of the device adopts a sliding tooth type (two-part) structure, the spray direction of the oil nozzle can be adjusted and positioned according to the actual situation, so as to better position the lubricating oil injection point. At the same time, since it is a circumferential sliding tooth type structure, the spray direction can be rotated circumferentially in one direction, and the adjustment of the spray direction is more convenient and reliable, thereby effectively reducing the risk of damage caused by repeated loading and unloading of related parts.

[0078] Furthermore, due to the circumferentially free rotating structure of the device, the matching structure of the fuel injector and the casing body can be in a standard form. In this way, multiple types of fuel injectors (of different lengths) can be replaced, the structural processing technology is solidified and mature, and the occurrence of out-of-tolerance is prevented. The device has low requirements for the operating environment (space) during assembly and disassembly, and can be disassembled conveniently. It is ensured that the device is not easy to be damaged during multiple disassembly processes, and can be repeatedly installed and used, with high reliability.

[0079] In addition, since the device is a two-stage nozzle, the secondary nozzle can be replaced according to actual needs, saving installation time. It can be used and replaced repeatedly, and has high economic benefits.

[0080] Since the wave washer or thread is in multi-point annular contact, the axial force can be effectively and evenly applied to the device, which can maintain the axial uniform force of the toothed connection and prevent dislocation and circumferential positioning failure.

[0081] Since the wave washer is installed between the tooth profile side and the end face of the fuel injector, the elastic deformation exerts pressure on one side of the fuel injector of the positioning device, thereby locking the fuel injector. The special structure of the wave washer makes it anti-vibration. When the gearbox is in working state, the positioning device effectively locks through the elastic deformation of the wave washer, ensuring that the device always maintains axial preload, preventing the fuel injector from axial movement, reducing the vibration of the fuel injector and increasing its service life.

[0082] In addition, since the wave washer can be selected as a standard part, the manufacturing cost can be reduced. During the installation and disassembly process, the retaining ring and the wave spring can be directly taken out, and the installation is convenient and reliable, and easy to replace. The nozzle device and the casing are assembled with each other in a non-threaded manner, and the installation and disassembly tools used are relatively simple, easy to carry, and the operation space is small, and the reliability and maintainability are strong.

[0083] The multi-directional and multi-stage automatic locking nozzle device of the present invention and the aircraft engine including the same can maintain the axial positioning state of the transmission rod relative to the gear shaft after adopting the positioning and locking device, thereby realizing a continuous automatic positioning and locking effect, and has the advantages of convenient positioning and measurement, simple installation process, low disassembly difficulty, low replacement cost, and strong workpiece independence.

[0084] The nozzle device solves the problems of difficult processing, low positioning accuracy, non-adjustable steering, poor versatility, high cost, complex installation, limited disassembly and assembly times, and low safety margin. The invention freely rotates the nozzle rod to align with the injection point, and uses the positioning of the circumferential teeth (360°) and the sliding rack to position. Finally, the spring structure is used to automatically lock the nozzle rod for axial positioning, thereby better ensuring the reliability and stability of the gearbox lubricating oil injection.

[0085] The advantages of the nozzle device are: more accurate positioning, micro-adjustment, continuous application of axial force for locking, simple installation, repeated disassembly and assembly, large safety margin, strong versatility, etc. The nozzle device can greatly reduce the design workload of the oil nozzle, and can also reduce the use cost and production cycle. It has the value of promotion and can be applied to the multi-directional, multi-stage and universal structural design of the oil nozzle in the transmission system of military and civil aviation engines.

[0086] In summary, the multi-directional multi-stage automatic locking nozzle device of the present invention and the aircraft engine including the same can provide the gearbox with a lubricating oil injection function to provide stability and reliability in the operation of the transmission gearbox. It has the following advantages:

[0087] 1. It breaks through the traditional positioning method of the transmission gearbox oil nozzle, and can transform the single nozzle spray into a circumferential free rotation, and the axial positioning into a more effective spring plus retaining ring with automatic locking method, which opens up a new idea for the positioning and spraying form of the universal nozzle of the gearbox;

[0088] Second, a new method of adjusting the spray direction is proposed. The nozzle is assembled on the casing through the circumferential tooth matching, and then with the spring locking device, the relative position between the nozzle and the casing is kept absolutely still, eliminating the axial movement of the nozzle relative to the casing;

[0089] 3. The multi-directional multi-stage automatic locking nozzle device is divided into multi-stage injection, and the injection directions of the two stages can be adjusted independently. In addition, each stage of the nozzle has 36 circumferential teeth, which can fine-tune the injection angle and inject the lubricating oil more accurately.

[0090] Fourth, the multi-directional multi-stage automatic locking nozzle device has two relatively independent stages, and the nozzles of each stage can be replaced at will, with strong interchangeability, and a series of nozzle products can be produced in a standardized manner;

[0091] 5. The multi-directional multi-stage automatic locking nozzle device is simple to process, easy to assemble, and easy to replace. After installation, the position of the nozzle's spraying direction can be adjusted, shortening the installation time and improving the working stability of the nozzle;

[0092] 6. The multi-directional multi-stage automatic locking nozzle device can avoid the situation where the loosening of components causes the device to fail even under high-speed operation conditions, thereby improving the reliability of the fuel injection device.

[0093] For those skilled in the art, the above invention disclosure is only used as an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary implementation of the present application.

[0094] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0095] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A multi-directional multi-stage automatic locking nozzle device for an aircraft engine transmission system, characterized in that: The multi-directional and multi-stage automatic locking nozzle device includes a mounting seat and a first nozzle. One end of the first nozzle is sleeved with a first spring and installed in the mounting seat. One end of the first nozzle is engaged with the mounting seat through positioning teeth, so that the first nozzle can rotate in the mounting seat to achieve free circumferential positioning.

2. The multi-directional multi-stage automatic locking nozzle device according to claim 1, characterized in that: The multi-directional and multi-stage automatic locking nozzle device also includes a second nozzle. The other end of the first nozzle is provided with an installation cavity. One end of the second nozzle is sleeved with a second spring and installed in the installation cavity. One end of the second nozzle is engaged with the installation cavity through positioning teeth, so that the second nozzle can rotate in the installation cavity to achieve free circumferential positioning.

3. The multi-directional multi-stage automatic locking nozzle device according to claim 2, characterized in that: A step portion is provided at one end of the first nozzle, a first positioning tooth is provided on the outer wall surface of the step portion, a first tooth matching portion is provided on the inner wall surface of the mounting seat, and the first positioning tooth and the first tooth matching portion are matched and connected with each other.

4. The multi-directional multi-stage automatic locking nozzle device according to claim 2, characterized in that: A second positioning tooth is disposed at one end of the second nozzle, a second tooth matching portion is disposed on the bottom wall of the mounting cavity, and the second positioning tooth and the second tooth matching portion are matched and connected with each other.

5. The multi-directional multi-stage automatic locking nozzle device according to claim 1, characterized in that: The first spring is a wave spring.

6. The multi-directional multi-stage automatic locking nozzle device according to claim 3, characterized in that: A clamping groove is provided on the inner wall surface of the mounting seat, and a first retaining ring is arranged in the clamping groove. The first retaining ring is located at the upper part of the step portion and is used to prevent the first nozzle from being displaced in the axial direction.

7. The multi-directional multi-stage automatic locking nozzle device according to claim 2, characterized in that: A second retaining ring is arranged on the inner wall surface of the installation cavity. The second retaining ring is located on the upper part of the second spring and is used to prevent the second nozzle from being displaced in the axial direction.

8. The multi-directional multi-stage automatic locking nozzle device according to claim 2, characterized in that: A first rubber ring is also provided at one end of the first nozzle, installed between the first nozzle and the mounting seat, and located at the lower part of the first spring; A second rubber ring is also provided at one end of the second nozzle, installed between the second nozzle and the installation cavity, and located at the lower part of the second spring.

9. The multi-directional multi-stage automatic locking nozzle device according to claim 3, characterized in that: The first nozzle and the second nozzle are provided with scales, and the upper end surface of the mounting seat is provided with scales.

10. An aircraft engine, characterized in that: The aircraft engine comprises a multi-directional, multi-stage automatic locking nozzle device as described in any one of claims 1-9.

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