CN114198165B - Driving device and driving method for high-pressure shaft of engine - Google Patents

Abstract

The application relates to a driving device and a driving method for a high-pressure shaft of an engine. The driving device of the high-pressure shaft of the engine comprises a manual lever, and a head structure is arranged at the end part of the manual lever; the gear shaft opening cover comprises a fixed part, a movable part and a locking device, wherein a cavity for accommodating the movable part is formed at the top of the fixed part, and the fixed part and the movable part are in a mutually locked or unlocked state through the locking device; the top of the movable part is provided with a lock hole, the head structure of the manual lever can be fixedly connected with the lock hole in a plug-in fit manner, so that the locking device is switched between a locking state and an unlocking state, the movable part can move in the length direction of the cavity in the unlocking state, and the bottom of the movable part can be fixedly connected with a gear shaft of the engine in a fit manner. The application provides a driving device and a driving method for an engine high-pressure shaft, which can avoid the problem of neglected loading of a manual lever gear shaft cover in the maintenance process of an aeroengine.

Description

Driving device and driving method for high-pressure shaft of engine

Technical Field

The application relates to the technical field of design and manufacture of aeroengines, in particular to a driving device and a driving method of an engine high-pressure shaft.

Background

In the maintenance process of the aeroengine, a manual lever is required to shake a high-pressure shaft of the forward engine during hole detection, a manual lever cover on the accessory gearbox is required to be opened at the moment, and a manual lever gear shaft of the manual lever inserted into the accessory gearbox is required to shake a gear shaft in the accessory gearbox, so that the engine high-pressure shaft is driven to rotate, and the purpose of observing all blades through hole detection is achieved.

However, due to the influence of human factors, the situation that the line maintenance personnel forget to install the manual lever gear shaft cover back to the original position after completing the work sometimes occurs. If the engine continues to run, oil leakage problems will occur, and the lubricating oil will leak from the mounting hole of the gear shaft cover of the manual lever, and if the lubricating oil leaks completely, an air parking accident will be caused. To solve this problem, OEMs (original equipment manufacturers) color the manual lever gear shaft cover red to alert the line maintenance personnel to recall that the manual lever gear shaft cover is installed back in place after completion of the job in a striking color. However, during the operation of the aeroengine, the measure still has difficulty in preventing maintenance personnel from forgetting to install the manual lever gear shaft cover, and such accidents occur.

Disclosure of Invention

Aiming at the problems in the prior art, the application provides a driving device and a driving method for a high-pressure shaft of an engine, which can avoid the problem of neglected installation of a manual lever gear shaft cover in the maintenance process of an aeroengine.

Specifically, the present application proposes a driving device for a high-pressure shaft of an engine, a manual lever having a head structure at an end thereof;

the gear shaft opening cover comprises a fixed part, a movable part and a locking device, wherein a cavity for accommodating the movable part is formed in the top of the fixed part, and the fixed part and the movable part are in a mutually locked or unlocked state through the locking device;

the top of the movable part is provided with a lock hole, the head structure of the manual lever can be fixedly connected with the lock hole in a plugging fit manner, so that the locking device is switched between a locking state and an unlocking state, in the unlocking state, the movable part can move along the length direction of the cavity, and the bottom of the movable part can be fixedly matched with a gear shaft of the engine.

According to one embodiment of the application, the manual lever comprises a first connecting section, a second connecting section and a third connecting section, wherein two ends of the second connecting section are respectively connected with one ends of the first connecting section and the third connecting section, a first bending is formed between the first connecting section and the second connecting section, and a second bending is formed between the second connecting section and the third connecting section;

the head structure is formed at the other end of the third connecting section.

According to one embodiment of the application, the first connecting section, the second connecting section and the third connecting section are in the same plane, and the angles of the first bending and the second bending are 90 degrees; and the bending directions of the first connecting section and the third connecting section are opposite to each other relative to the second connecting section.

According to one embodiment of the application, the locking device is a snap-in structure, and the head structure is inserted into the lock hole to push the snap-in structure to an unlocked state.

According to one embodiment of the present application, the locking device is a locking structure, the head structure is inserted into the locking hole to be completely matched with the locking structure, and the head structure is rotated by a set angle to push the locking structure to reach the unlocking state.

According to one embodiment of the application, the chamber and the movable part are rectangular and are matched with each other in shape.

According to one embodiment of the application, the fixing part forms a rubber ring groove around the outer wall of the chamber.

The application also provides a driving method of the engine high-pressure shaft, which is suitable for the driving device of the engine high-pressure shaft and comprises the following steps:

inserting a head structure of a manual lever into a movable portion of the gear shaft cover;

unlocking the locking device to enable the movable part to move relative to the fixed part;

pressing the movable part to move towards the inside of the fixed part so that the end part of the movable part is matched and fixed with the gear shaft;

rotating the manual lever to drive the gear shaft to rotate;

lifting the manual lever to drive the movable part to reset;

locking the locking device;

and pulling away the manual lever.

According to the driving device and the driving method for the high-pressure shaft of the engine, the structure of the gear shaft cover is actually changed, so that the manual lever gear shaft cover cannot be neglected in the maintenance process of the aeroengine, the safety of the aeroengine is enhanced, and the risk of air parking accidents is reduced.

It is to be understood that both the foregoing general description and the following detailed description of the present application are exemplary and explanatory and are intended to provide further explanation of the application as claimed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the accompanying drawings:

fig. 1 shows a schematic configuration of a driving apparatus of a high-pressure shaft of an engine according to an embodiment of the present application.

Fig. 2 is an enlarged partial schematic view of the manual lever of fig. 1.

Fig. 3 is a cross-sectional view of the gear shaft cover in fig. 1.

Fig. 4 shows a schematic structural view of the fixing portion.

Fig. 5 shows a schematic structural view of the movable portion.

Fig. 6 shows a flowchart of a driving method of the high-pressure shaft of the engine according to an embodiment of the present application.

Wherein the above figures include the following reference numerals:

manual lever 101 of driving device 100 for high-pressure shaft of engine

Gear shaft cover 102 head structure 103

Fixed part 104 and movable part 105

Locking device 106 chamber 107

First connecting section 109 of lock hole 108

Second connection section 110 third connection section 111

First bend 112 second bend 113

Raised 114 rubber ring groove 115

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application. Furthermore, although terms used in the present application are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present application is understood, not simply by the actual terms used but by the meaning of each term lying within.

Fig. 1 shows a schematic configuration of a driving apparatus of a high-pressure shaft of an engine according to an embodiment of the present application. Fig. 2 is an enlarged partial schematic view of the manual lever of fig. 1. Fig. 3 is a cross-sectional view of the gear shaft cover in fig. 1. Fig. 4 shows a schematic structural view of the fixing portion. Fig. 5 shows a schematic structural view of the movable portion. As shown in the drawing, a driving device 100 of an engine high-pressure shaft mainly includes a manual lever 101 and a gear shaft cover 102. The manual rod 101 and the gear shaft opening cover 102 are connected and matched to drive the gear shaft to rotate, and the gear shaft drives the high-pressure shaft to rotate so as to finish the hole detection operation in the maintenance process of the aeroengine. The following describes the engine high-pressure shaft driving device 100 in detail.

At the end of the manual lever 101 there is a head structure 103.

The gear shaft cover 102 includes a fixed portion 104, a movable portion 105, and a locking device 106. A chamber 107 for accommodating the movable part 105 is formed at the top of the fixed part 104, and the fixed part 104 and the movable part 105 are formed in a mutually locked or unlocked state by a locking device 106.

A lock hole 108 is opened at the top of the movable portion 105. The head structure 103 of the manual lever 101 is matched with the structure of the lock hole 108 and can be fixed in a plug-in fit with the lock hole 108 so as to switch the locking device 106 between the locked and unlocked states. In the unlocked state, the movable portion 105 can move in the longitudinal direction of the chamber 107, and the bottom of the movable portion 105 can be fixed in cooperation with the gear shaft of the engine, and the gear shaft is connected and fixed with the high-pressure shaft. Thus, the manual lever 101 is rotated, and the high-pressure shaft is rotated by the movable portion 105 and the gear shaft.

For ease of understanding, the head structure 103 may be understood as a key, with the movable portion 105 of the gear shaft cover 102 being compared to the lock core of a lock. The insertion of the head structure 103 into the movable portion 105 is equivalent to the insertion of a key into the lock cylinder, and the two are matched with the unlocking locking device 106, so that the lock cylinder can be further driven to move towards the lock, and the lock cylinder is matched with the gear shaft, so that the high-pressure shaft is driven to rotate through the gear shaft. It is easy to understand that the driving device 100 for the high-pressure shaft of the engine provided by the application removes the structure of 'uncovering' and 'closing' of the gear shaft cover 102 in the traditional sense, thereby avoiding missing the step of 'closing' in the hole detection operation process, enhancing the safety of the aeroengine and reducing the risk of air parking accidents.

Preferably, turning to fig. 1, the manual lever 101 comprises a first connection section 109, a second connection section 110 and a third connection section 111. Both ends of the second connection section 110 are connected to one ends of the first connection section 109 and the third connection section 111, respectively. A first fold 112 is formed between the first connection section 109 and the second connection section 110, and a second fold 113 is formed between the second connection section 110 and the third connection section 111. The head structure 103 is formed at the other end of the third connecting section 111. More preferably, the first connection section 109, the second connection section 110 and the third connection section 111 are in the same plane. And the angles of the first bend 112 and the second bend 113 are 90 degrees. In addition, the first connection section 109 and the third connection section 111 are bent in opposite directions with respect to the second connection section 110. Such a structure of the manual lever 101 is convenient for processing, assembling and disassembling, and easy for storage.

Preferably, referring to fig. 5, the locking device 106 may be a snap-fit structure. The head structure 103 is typically provided with radial protrusions 114, and during insertion into the locking aperture 108, the protrusions 114 of the head structure 103 push the snap-in structure from the locked state into the unlocked state.

Optionally, the locking device 106 is a snap-fit structure. The head structure 103 is inserted into the lock hole 108 to completely match the two, and the fastening structure is not in the unlocking state. The head structure 103 is rotated by a set angle, so that the protrusion 114 formed on the head structure 103 pushes the snap structure to make the fixed portion 104 and the movable portion 105 reach the unlocked state.

Preferably, the chamber 107 and the movable portion 105 are rectangular, and the two are tightly matched in shape, so that assembly is facilitated. And the movable part 105 is not deflected during movement.

Preferably, the fixing portion 104 forms a rubber ring groove 115 around the outer wall of the chamber 107. The rubber ring groove 115 is designed to maintain sealing performance between the movable portion 105 and the fixed portion 104.

Fig. 6 shows a flowchart of a driving method of the high-pressure shaft of the engine according to an embodiment of the present application. As shown in the figure, the present application also provides a driving method of the high-pressure shaft of the engine, which is suitable for the driving device 100, and includes the following steps:

step 1, the head structure 103 of the manual lever 101 is inserted into the movable portion 105 of the gear shaft cover 102, so that the two are fixed in a plug-in fit.

Step 2, unlocking the locking device 106, and transferring the locking device 106 from the locked state to the unlocked state, the movable portion 105 can move relative to the fixed portion 104.

Step 3, the movable portion 105 is pressed to move toward the inside of the fixed portion 104, so that the end of the movable portion 105 is fixed in cooperation with the gear shaft. The gear shaft is further connected and matched with the high-pressure shaft for fixation.

Step 4, the manual lever 101 is rotated to drive the gear shaft of the engine to rotate.

And 5, after the steps are completed, the movable rod 101 is lifted to drive the movable part 105 to reset.

Step 6, the locking device 106 is locked, and the locking device 106 is shifted from the unlocked state to the locked state.

Step 7, the manual lever 101 is pulled out.

The driving device 100 and the driving method thereof for the high-pressure shaft of the engine provided by the application actually change the structure of the driving device 100, so that the gear shaft cover 102 is always kept in a closed state, and therefore, the gear shaft cover 102 of the manual lever 101 cannot be neglected in the maintenance process of the aeroengine, the safety of the aeroengine is enhanced, and the risk of air parking accidents is reduced.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present application without departing from the spirit and scope of the application. Therefore, it is intended that the present application cover the modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims (8)

1. A drive device for a high-pressure shaft of an engine, comprising:

a manual lever having a head structure at an end thereof;

the gear shaft opening cover comprises a fixed part, a movable part and a locking device, wherein a cavity for accommodating the movable part is formed in the top of the fixed part, and the fixed part and the movable part are in a mutually locked or unlocked state through the locking device;

the top of the movable part is provided with a lock hole, the head structure of the manual lever can be fixedly connected with the lock hole in a plugging fit manner, so that the locking device is switched between a locking state and an unlocking state, in the unlocking state, the movable part can move along the length direction of the cavity, and the bottom of the movable part can be fixedly matched with a gear shaft of the engine.

2. The engine high-pressure shaft driving device according to claim 1, wherein the manual lever comprises a first connecting section, a second connecting section and a third connecting section, two ends of the second connecting section are respectively connected with one ends of the first connecting section and the third connecting section, a first bending is formed between the first connecting section and the second connecting section, and a second bending is formed between the second connecting section and the third connecting section;

the head structure is formed at the other end of the third connecting section.

3. The engine high-pressure shaft driving device according to claim 2, wherein the first connecting section, the second connecting section and the third connecting section are in the same plane, and the angles of the first bending and the second bending are 90 degrees; and the bending directions of the first connecting section and the third connecting section are opposite to each other relative to the second connecting section.

4. The engine high pressure shaft drive of claim 1, wherein the locking means is a snap-in structure, and the head structure is inserted into the lock hole to push the snap-in structure to an unlocked state.

5. The engine high pressure shaft driving device as claimed in claim 1, wherein the locking means is a snap-in structure, the head structure is inserted into the lock hole to be completely engaged with the lock hole, and the head structure is rotated by a set angle to push the snap-in structure to an unlocked state.

6. The engine high pressure shaft driving device as claimed in claim 1, wherein the chamber and the movable portion are rectangular and are in shape-fit.

7. The engine high pressure shaft driving device as claimed in claim 6, wherein the fixing portion is formed with a rubber ring groove around an outer wall of the chamber.

8. A driving method of an engine high-pressure shaft, which is applied to the driving device of an engine high-pressure shaft according to any one of claims 1 to 7, characterized by comprising the steps of:

inserting a head structure of a manual lever into a movable portion of the gear shaft cover;

unlocking the locking device to enable the movable part to move relative to the fixed part;

pressing the movable part to move towards the inside of the fixed part so that the end part of the movable part is matched and fixed with the gear shaft;

rotating the manual lever to drive the gear shaft to rotate;

lifting the manual lever to drive the movable part to reset;

locking the locking device;

and pulling away the manual lever.