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

Abstract

The application provides a multi-directional multi-stage automatic locking nozzle device and an aero-engine comprising the same. The multi-directional multi-stage automatic locking nozzle device comprises a mounting seat and a first nozzle. One end of the first nozzle is sleeved with a first spring and is mounted into the mounting seat. The first nozzle is rotatable in the mounting seat and is freely circumferentially positioned through the engagement of positioning teeth between one end of the first nozzle and the mounting seat. The application can provide a lubricating oil injection function for a gear box to provide stability and reliability for the operation of the transmission gear box. The positioning mode of the conventional lubricating oil injection nozzle of the transmission gear box is broken through. The single injection of the nozzle can be changed into the circumferentially freely rotating, the axial positioning can be changed into the automatic locking mode of the spring plus the blocking ring cooperation, and a new idea is opened up for the positioning injection direction form of the general nozzle of the gear box.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aero-engine lubrication and cooling, in particular to a multi-directional and multi-stage automatic locking nozzle device and an aero-engine comprising the same. BACKGROUND

[0002] In the prior art, as the power device of an aerial vehicle, an aero-engine is one of the determinants of the performance of the aerial vehicle and is called the heart of the aircraft. As the source of power of the aero-engine, a transmission system not only needs to transmit torque but also needs to transmit axial force and even radial force and other various loads.

[0003] Among them, the transmission gear box is a key component of the aero-engine, as a kinetic energy conversion device, it is used to drive the normal operation of the starting system, fuel system, oil system, power generation system, and hydraulic system of the aero-engine and aircraft, and its performance directly affects the operation of the aero-engine.

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

[0005] With the continuous improvement of the performance indicators of the aero-engine, high reliability, low oil consumption and high thrust-to-weight ratio, the rotational speed and input power of the gear box components are also increasing. The transmission gear box mainly adopts gear meshing and spline fitting structure.

[0006] When the transmission system is working, the high-speed rotating gears, bearings and splines and other rotor parts will generate a large amount of heat due to friction. If the heat is not discharged in time, it will accelerate the wear of the parts and reduce the service life. If not, it will cause the failure of the parts 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 the aircraft.

[0007] The mainstream lubrication and cooling structure of the gear box accessory of the traditional structure is the nozzle structure. One end of the nozzle is connected with the oil pipe (with a mounting positioning hole), and the other end is processed with one or more spray holes with a fixed hole diameter and a fixed length-diameter ratio based on the design of oil supply pressure, spray position and oil demand. The oil enters the nozzle through the oil inlet, and then is sprayed to the specified position through the spray hole, so as to realize the lubrication and cooling of the specified position.

[0008] The use of traditional oil nozzle has the disadvantages of high processing cost, complex installation process, high replacement cost, weak independence of workpiece, etc. At the same time, the processing time is long, the operation space condition is harsh, the positioning is not accurate, etc.

[0009] As an important power source of an aero-engine, the transmission system, with the increasing load and rotating speed of the engine, the rotating speed of each rotating part in the gear box will also increase, and the high-speed rotating gears, bearings and spline rotors will generate a large amount of heat due to friction.

[0010] Therefore, the present application provides a multi-directional multi-stage automatic locking nozzle device and an aero-engine comprising the same to overcome the above technical problems. SUMMARY

[0011] The present application aims to overcome the defects of high processing cost, complex installation process and high disassembly cost of the traditional oil nozzle in the prior art, and provides a multi-directional multi-stage automatic locking nozzle device and an aero-engine comprising the same.

[0012] The present application solves the above technical problems by the following technical solutions:

[0013] A multi-directional multi-stage automatic locking nozzle device for an aero-engine transmission system, characterized in that the multi-directional multi-stage automatic locking nozzle device comprises a mounting seat and a first nozzle, one end of the first nozzle is sleeved with a first spring and is installed in the mounting seat, and the one end of the first nozzle is engaged with the mounting seat through positioning teeth, so that the first nozzle rotates in the mounting seat and is freely positioned circumferentially.

[0014] According to one embodiment of the present application, the multi-directional multi-stage automatic locking nozzle device further comprises a second nozzle, the other end of the first nozzle is provided with a mounting cavity, one end of the second nozzle is sleeved with a second spring and is installed in the mounting cavity, and the one end of the second nozzle is engaged with the mounting cavity through positioning teeth, so that the second nozzle rotates in the mounting cavity and is freely positioned circumferentially.

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

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

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

[0018] According to one embodiment of the present application, a clamping groove is formed on the inner wall surface of the mounting seat, and a first stop ring is arranged in the clamping groove and located at the upper portion of the step portion to prevent the first nozzle from moving in the axial direction.

[0019] According to one embodiment of the present application, a second stop ring is arranged on the inner wall surface of the mounting cavity and located at the upper portion of the second spring to prevent the second nozzle from moving in the axial direction.

[0020] According to one embodiment of the present application, one end of the first nozzle is further provided with a first rubber ring mounted between the first nozzle and the mounting seat and located at the lower portion of the first spring.

[0021] One end of the second nozzle is further provided with a second rubber ring mounted between the second nozzle and the mounting cavity and located at the lower portion of the second spring.

[0022] According to one embodiment of the present application, scales are arranged on the first nozzle and the second nozzle, and scales are arranged on the upper end surface of the mounting seat.

[0023] The present application also provides an aero-engine, which comprises the multi-directional multi-stage automatic locking nozzle device as described above.

[0024] The positive progress effect of the present application is that:

[0025] The multi-directional multi-stage automatic locking nozzle device and the aero-engine comprising the same can provide the gear box with oil injection function to provide stability and reliability for the operation of the transmission gear box. The device has the following advantages:

[0026] I. The positioning mode of the traditional transmission gear box oil injection nozzle is broken through, the single injection of the nozzle is changed into the circumferential free rotation, and the axial positioning is changed into the spring plus stop ring cooperation automatic locking mode, which opens up a new idea for the positioning and injection direction of the general nozzle of the gear box.

[0027] II. A new adjustable injection direction mode is proposed, the nozzle is assembled on the casing through the circumferential tooth type, and then the spring locking device is matched to keep the relative position between the nozzle and the casing absolutely stationary, thereby eliminating the axial movement of the nozzle relative to the casing.

[0028] III. The multi-directional multi-stage automatic locking nozzle device is divided into multiple stages of injection, the directions of the two stages of injection can be independently adjusted, and the circumferential tooth type of each stage of nozzle is 36, which can finely adjust the injection angle and more accurately inject the oil.

[0029] Four, the multi-way multi-stage automatic locking nozzle device, two stages are relatively independent, each stage nozzle can be arbitrarily replaced, interchangeability is strong, can standardize production series nozzle products;

[0030] Five, the multi-way multi-stage automatic locking nozzle device, simple processing, easy assembly, easy to replace, after installation, the position of the jet direction of the nozzle can be adjusted, the installation time is shortened, and the working stability of the nozzle is improved;

[0031] Six, the multi-way multi-stage automatic locking nozzle device, even in the working condition of high rotating speed, the device failure caused by the loosening of the parts can be avoided, and the reliability of the oil injection device is improved. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

[0035] Figure 3 Structure schematic diagram of the multi-way multi-stage automatic locking nozzle device.

[0036] Figure 4 Structure schematic diagram of the first nozzle in the multi-way multi-stage automatic locking nozzle device.

[0037] Figure 5 Axial sectional view of the first nozzle in the multi-way multi-stage automatic locking nozzle device.

[0038] Figure 6 Structure schematic diagram of the mounting seat in the multi-way multi-stage automatic locking nozzle device.

[0039] Figure 7 Assembly schematic diagram of the first nozzle and the mounting seat in the multi-way multi-stage automatic locking nozzle device Figure 1 .

[0040] Figure 8 Assembly schematic diagram of the first nozzle and the mounting seat in the multi-way multi-stage automatic locking nozzle device Figure 2 .

[0041] Figure 9 Structure schematic diagram of the second nozzle in the multi-way multi-stage automatic locking nozzle device.

[0042] Figure 10 is an axial sectional view of the second nozzle in the multi-directional multi-stage automatic locking nozzle device of the present application.

[0043] Figure 11 is an assembly schematic view of the first nozzle and the second nozzle in the multi-directional multi-stage automatic locking nozzle device of the present application.

[0044] Figure 12 is a perspective view of the multi-directional multi-stage automatic locking nozzle device of the present application Figure 1 .

[0045] Figure 13 is a perspective view of the multi-directional multi-stage automatic locking nozzle device of the present application Figure 2 .

[0046] Figure 14 is an axial sectional view of the multi-directional multi-stage automatic locking nozzle device of the present application.

[0047] Figure 15 is a scale schematic view on the first nozzle in the multi-directional multi-stage automatic locking nozzle device of the present application.

[0048] Figure 16 is a scale schematic view on the mounting seat in the multi-directional multi-stage automatic locking nozzle device of the present application.

[0049] Figure 17 is a scale schematic view on the second nozzle in the multi-directional multi-stage automatic locking nozzle device of the present application. DETAILED DESCRIPTION

[0050] In order to make the above objectives, features and advantages of the present application more obvious and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0051] Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0052] Further, although the terms used in the present application are selected from publicly-known terms, some of the terms mentioned in the specification of the present application can be selected by the applicant in his or her judgment, and the detailed meanings thereof are described in the relevant part of the description herein.

[0053] Further, the present application is to be understood not only by the actual terms used but also by the meanings of each term implied therein.

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

[0055] In the conventional transmission gearbox, there is no adjustable direction oil nozzle, so after the oil nozzle is installed, the spray point of the oil nozzle cannot be adjusted in the circumferential direction, and only one spray point can be set for one oil nozzle, which cannot be universally replaced, and the economic cost is very high.

[0056] As shown in the drawings, Figures 3 to 14 The application discloses a multi-directional multi-stage automatic locking nozzle device for an aero-engine transmission system, which comprises a mounting seat 10 and a first nozzle 100, one end of the first nozzle 100 is sleeved with a first spring 200, and the first nozzle 100 is installed into the mounting seat 10. The 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 and is positioned freely in the circumferential direction. The first spring 200 can be preferably a wave spring.

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

[0058] In addition, a clamping groove 12 is formed in the inner wall surface of the mounting seat 10, and a first stop ring 300 is arranged in the clamping groove 12. The first stop ring 300 is located at the upper portion of the stepped portion 110 and is used for preventing the first nozzle 100 from being displaced in the axial direction.

[0059] The one end of the first nozzle 100 is also provided with a first rubber ring 130, which is installed between the first nozzle 100 and the mounting seat 10 and is located at the lower portion of the first spring 200.

[0060] As shown in the drawings, Figures 9 to 11 The multi-directional multi-stage automatic locking nozzle device further comprises a second nozzle 400, an installation cavity 140 is formed in the other end of the first nozzle 100, one end of the second nozzle 400 is sleeved with a second spring 500, and the second nozzle 400 is installed into the installation cavity 140. The one end of the second nozzle 400 is engaged with the installation cavity 140 through positioning teeth, so that the second nozzle 400 rotates in the installation cavity 140 and is positioned freely in the circumferential direction.

[0061] Preferably, a second positioning tooth 410 is arranged at the one end of the second nozzle 400, a second tooth matching portion 141 is arranged on the bottom wall surface 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] Further, a second stop ring 600 is arranged on the inner wall surface of the mounting cavity 140, and is located at the upper portion of the second spring 500, for preventing the second nozzle 400 from moving in the axial direction.

[0063] A second rubber ring 420 is further arranged at one end of the second nozzle 400, and is arranged between the second nozzle 400 and the mounting cavity 140, and is located at the lower portion of the second spring 500.

[0064] As shown in the drawings, preferably, scales are arranged on the first nozzle 100 and the second nozzle 400, and the upper end surface of the mounting seat 10 is provided with scales. According to the design technical requirements or actual situation, the corresponding scale value can be rotated in the circumferential direction during assembly, so as to achieve the effect of accurate spraying positioning. Figures 15 to 17

[0065] The application further provides an aero-engine, characterized in that the aero-engine comprises the multi-directional multi-stage automatic locking nozzle device as described above.

[0066] According to the above structural description, the multi-directional multi-stage automatic locking nozzle device comprises four parts. The first part is the first nozzle 100 and the second nozzle 400, both of which have positioning teeth, and can be positioned in the circumferential direction by rotating the nozzles, without the need to assemble and position by changing the nozzle body (nozzle direction). The second part is the first spring 200 and the second spring 500, which are assembled between the nozzle body and the stop ring, and provide continuous elastic force to lock the position of the nozzle body, preventing axial movement. The third part is the first stop ring 300 and the second stop ring 600, which are assembled on the inner side of the mounting seat, cooperate with the springs, and prevent the nozzle body from moving in the axial direction. 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, and play a sealing role.

[0067] After the multi-directional multi-stage automatic locking nozzle device is adopted, the second nozzle 400 can be rotated in the circumferential direction during assembly. For example, when the first nozzle 100 is assembled, first, the nozzle body of the first nozzle 100 (the first rubber ring 130 has been assembled) is assembled with the wave spring 202 (i.e. the first spring 200) at the lower end surface, and is placed into the mounting seat 10 (positioning teeth and cooperation). Then, the first stop ring 130 is assembled (to prevent the first nozzle 100 from slipping in the axial direction).

[0068] ​Second, to adjust the injection circumferential direction, first, the first nozzle 100 is axially pressed down, so that the nozzle body and the tooth on the mounting seat 10 are axially disengaged, then the first nozzle 100 is rotated to the appropriate position according to the requirements, and the axial force on the first nozzle 100 is removed, so that the first nozzle 100 is re-engaged with the tooth on the mounting seat 10 under the action of the wave spring, thereby enabling the first nozzle 100 to more accurately spray oil, facilitating installation, and enabling accurate positioning of the injection circumferential position. In this way, the design and the actual object can correspond to each other, and production costs can be effectively saved.

[0069] Further, after adopting the multi-directional multi-stage automatic locking nozzle device, the second nozzle 400 can be circumferentially rotated during assembly. For example, to install the second nozzle 400, first, the lower end surface of the nozzle body of the second nozzle 400 (with the second rubber ring 420 assembled) is assembled with the second spring 500, and then they are placed into the first nozzle 100 (positioning tooth and cooperation). Then, the second stop ring 600 is assembled (to prevent the second nozzle 400 from axially slipping off).

[0070] Second, to adjust the injection circumferential direction, since the tooth of the second nozzle 400 and the first nozzle 100 is in a sliding flat tooth mode, the second nozzle 400 can be directly rotated (toward the tooth direction) to axially disengage the tooth of the second nozzle 400 and the first nozzle 100. Then, the second nozzle 400 is rotated to the appropriate position according to the requirements, and the circumferential force on the second nozzle 400 is removed, so that the second nozzle 400 is re-engaged with the tooth of the first nozzle 100 under the action of the spring, thereby enabling the second nozzle 400 to more accurately spray oil, facilitating installation, and enabling accurate positioning of the injection circumferential position, ensuring that the design and the actual object can correspond to each other, and effectively saving production costs.

[0071] Further, after adopting the multi-directional multi-stage automatic locking nozzle device, the first nozzle 100 and the second nozzle 400, which are composed of two stages, can be independently circumferentially rotated during assembly. According to actual requirements, the first nozzle 100 is circumferentially rotated for accurate positioning of the injection direction, then the second nozzle 400 is circumferentially rotated for accurate positioning of the injection 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, since the two-stage nozzle or the multi-stage nozzle can be independently circumferentially rotated, the nozzle assembly with this structure can be standardized for production, the engine can select a shelf product according to 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 ensured, and the risk is reduced.

[0073] After the multi-directional and multi-stage automatic locking nozzle device is adopted, the oil injection nozzle device of the gear box is different from the traditional scheme, the D-shaped anti-rotation mode is usually adopted for positioning in the traditional gear box, each oil injection nozzle is limited to one oil injection point position, the injection direction cannot be changed, the processing difficulty and precision of the oil nozzle are required, the installation process is complex, and the installation is prone to be out of position, the repeated disassembly process is complex, and damage is prone to occur. However, the processing technology of the multi-directional and multi-stage automatic locking nozzle device is mature, the installation part cooperating with the device has high universality, and the device is convenient to install and can be repeatedly disassembled.

[0074] In the multi-directional and multi-stage automatic locking nozzle device, the positioning device (without bolt installation) can reasonably utilize the internal space of the shaft, effectively save the space of the gear box, be beneficial to the circulation of the gear oil of the gear box and reduce the splashing phenomenon of the gear oil, so that the temperature of the gear box is effectively reduced.

[0075] Since the fastening mode of the device adopts a spring structure, the axial positioning can be realized in real time, and the loosening phenomenon is better prevented. Meanwhile, since it is a spring structure, the disassembly and assembly process is more convenient and reliable, so that the damage risk caused by repeated disassembly and assembly of related parts is effectively reduced.

[0076] In addition, since the circumferential positioning mode of the device adopts a tooth type (part) structure, the injection direction of the oil injection nozzle can be adjusted and positioned in the circumferential direction according to the actual situation, and the oil injection point is better positioned. Since it is a circumferential tooth type structure, the injection direction can be adjusted in the circumferential direction by 360°, so that the injection direction is more convenient and reliable, thereby effectively reducing the damage risk caused by repeated disassembly and assembly of related parts.

[0077] Further, since the circumferential positioning mode of the device adopts a sliding tooth type (two parts) structure, the injection direction of the oil injection nozzle can be adjusted and positioned in the circumferential direction according to the actual situation, and the oil injection point is better positioned. Since it is a circumferential sliding tooth type structure, the injection direction can be adjusted in the circumferential direction in one direction, so that the injection direction is more convenient and reliable, thereby effectively reducing the damage risk caused by repeated disassembly and assembly of related parts.

[0078] Still further, since the device has a circumferential free rotation structure, the oil injection nozzle and the casing body cooperating structure can adopt a standard form. In this way, oil injection nozzles of multiple models (different in length) can be exchanged, the structure processing technology is mature, the device is not prone to produce over-difference, the device has low requirements on the operating environment (space) during assembly and disassembly, can be conveniently disassembled, is not prone to be damaged during multiple disassembly processes, can be repeatedly installed and used, has high reliability, and the like.

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

[0080] Due to the wave washer or thread is multi-point annular surface contact, the device can be effectively and uniformly applied axial force, the axial uniform force of the tooth type connection can be maintained, and dislocation and circumferential positioning failure can be prevented.

[0081] Due to the wave washer is installed between the tooth side and the oil nozzle end face, the elastic deformation exerts pressure on one side of the positioning device of the oil nozzle, so that the oil nozzle is locked. The special mechanism of the wave washer has an anti-vibration effect. The positioning device effectively locks through the elastic deformation of the wave washer in the working state of the gear box, ensures that the device always maintains axial pre-tightening force, prevents the axial movement of the oil nozzle, reduces the vibration of the oil nozzle and prolongs the service life of the oil nozzle.

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

[0083] The multi-directional and multi-stage automatic locking nozzle device and the aero-engine comprising the same can keep the transmission rod in an axial positioning state relative to the gear shaft, realize continuous automatic positioning and locking, and has the advantages of convenient positioning measurement, simple installation process, low disassembly difficulty, low replacement cost, strong workpiece independence and the like.

[0084] The nozzle device solves the problems of high machining difficulty, low positioning accuracy, poor universality, high cost, complex installation, limited disassembly times and low safety margin. The nozzle device aligns the oil nozzle rod with the injection point through free rotation, positions in the form of circumferential teeth (360°) and sliding rack clamping, and finally automatically locks the oil nozzle rod in axial positioning through the spring structure, so as to better ensure the reliability and stability of the gear box oil injection.

[0085] The nozzle device has the advantages of more accurate positioning, slight adjustment, continuous application of axial force for locking, simple installation, repeated disassembly, large safety margin, strong universality and the like. The nozzle device can greatly reduce the design workload of the oil nozzle, reduce the use cost and production cycle, and has the value of popularization and can be applied to the multi-directional and multi-stage and universal structure design of the oil nozzle of the military and civil aero-engine transmission system.

[0086] In summary, the multi-directional and multi-stage automatic locking nozzle device and the aero-engine comprising the same can provide the gear box with oil injection function, so as to provide stability and reliability for the operation of the transmission gear box. The nozzle device has the following advantages:

[0087] I. Breakthrough the traditional transmission gearbox oil nozzle positioning mode, can be single nozzle into a circumferential free rotation, axial positioning into a better spring and stop ring cooperation automatic locking mode, for the gearbox nozzle positioning spray direction form opened a new way of thinking;

[0088] II. A new adjustable spray direction is proposed, the nozzle is assembled on the casing through the circumferential tooth type, and the spring locking device is matched, so that the relative position between the nozzle and the casing is kept absolutely static, and the axial movement of the nozzle relative to the casing is eliminated;

[0089] III. The multi-directional multi-stage automatic locking nozzle device is divided into multi-stage spraying, the two-stage spraying directions can be independently adjusted, and the circumferential tooth type of each stage nozzle is 36, the spraying angle can be finely adjusted, and the oil is sprayed more accurately;

[0090] IV. The multi-directional multi-stage automatic locking nozzle device is relatively independent, and each stage nozzle can be replaced arbitrarily, and the interchangeability is high, so that the series nozzle products can be standardized and produced;

[0091] V. The multi-directional multi-stage automatic locking nozzle device is simple to process, easy to assemble, easy to replace, and after installation, the position of the nozzle can be adjusted, the installation time is shortened, and the working stability of the nozzle is improved;

[0092] VI. The multi-directional multi-stage automatic locking nozzle device can avoid the situation that the device fails due to loosening of parts even under high-speed operation conditions, and the reliability of the oil injection device is improved.

[0093] For those skilled in the art, the above disclosure is only an example, and does not constitute a limitation on the present application. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in the present application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present application.

[0094] At the same time, specific words are used in the present application to describe the embodiments of the present application. As "one embodiment", "an embodiment" and / or "some embodiments" mean a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "an embodiment" or "one embodiment" or "an alternative embodiment" mentioned in different places in the 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 properly combined.

[0095] Although the specific embodiments of the present application have been described above, it is understood by those skilled in the art that these are merely illustrative, and the scope of protection of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to the embodiments without departing from the principles and the essence of the present application, and such changes and modifications fall within the scope of protection of the present application.

Claims

1. A multi-directional, multi-stage automatic locking nozzle device for use in an aircraft engine transmission system, characterized in that, The multi-directional multi-stage automatic locking nozzle device includes a mounting base and a first nozzle. A first spring is sleeved on one end of the first nozzle and installed in the mounting base. The first end of the first nozzle is engaged with the mounting base through positioning teeth, so that the first nozzle can rotate in the mounting base to achieve free circumferential positioning. The multi-directional, multi-stage automatic locking nozzle device also includes a second nozzle. The other end of the first nozzle has an installation cavity. A second spring is sleeved on one end of the second nozzle and installed into the installation cavity. The one end of the second nozzle and the installation cavity are engaged by positioning teeth, so that the second nozzle can rotate in the installation cavity and achieve free circumferential positioning.

2. The multi-directional, multi-stage automatic locking nozzle device as described in claim 1, characterized in that, The first nozzle has a stepped portion at one end, and a first positioning tooth is provided on the outer wall surface of the stepped portion. A first tooth mating portion is provided on the inner wall surface of the mounting base. The first positioning tooth and the first tooth mating portion are matched and connected to each other.

3. The multi-directional, multi-stage automatic locking nozzle device as described in claim 1, characterized in that, The second nozzle has a second positioning tooth at one end, and the bottom wall of the mounting cavity has a second tooth mating part, and the second positioning tooth and the second tooth mating part are matched and connected to each other.

4. The multi-directional, multi-stage automatic locking nozzle device as described in claim 1, characterized in that, The first spring is a wave spring.

5. The multi-directional, multi-stage automatic locking nozzle device as described in claim 2, characterized in that, A slot is formed on the inner wall of the mounting base, and a first retaining ring is provided in the slot. The first retaining ring is located at the upper part of the stepped portion and is used to prevent the first nozzle from being displaced in the axial direction.

6. The multi-directional, multi-stage automatic locking nozzle device as described in claim 1, characterized in that, A second retaining ring is provided on the inner wall of the mounting cavity. The second retaining ring is located above the second spring and is used to prevent the second nozzle from displacing in the axial direction.

7. The multi-directional, multi-stage automatic locking nozzle device as described in claim 1, characterized in that, A first rubber ring is also provided at one end of the first nozzle, which is installed between the first nozzle and the mounting base and is located at the lower part of the first spring; A second rubber ring is also provided at one end of the second nozzle, which is installed between the second nozzle and the mounting cavity and is located below the second spring.

8. The multi-directional, multi-stage automatic locking nozzle device as described in claim 2, characterized in that, The first nozzle and the second nozzle are provided with graduations, and the upper surface of the mounting base is provided with graduations.

9. An aircraft engine, characterized in that, The aero-engine includes the multi-directional, multi-stage automatic locking nozzle device as described in any one of claims 1-8.

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