阅读说明：本技术 一种发动机功率提取结构及其操纵方法 (Engine power extraction structure and operation method thereof ) 是由 丁拳 戚光鑫 杨治中 严冬梅 刘公博 于 2020-05-22 设计创作，主要内容包括：本申请属于发动机功率提取设置领域,具体涉及一种发动机功率提取结构,包括：两根功率提取轴,每根功率提取轴的一端为提取端,另一端为驱动端；其中,每根功率提取轴的驱动端用以连接至附件辅助装置；每根功率提取轴具有：工作状态,其提取端连接至发动机,以能够自该发动机提取功率,驱动附件辅助装置工作；非工作状态,其提取端与发动机分离,停止自该发动机提取功率,停止对附件辅助装置的驱动。此外涉及一种上述发动机功率提取结构的操纵方法。(The application belongs to engine power and draws and set up the field, concretely relates to engine power draws structure, include: one end of each power extraction shaft is an extraction end, and the other end of each power extraction shaft is a driving end; wherein the drive end of each power extraction shaft is for connection to an accessory auxiliary device; each power extraction shaft has: the working state, the extraction end of which is connected to the engine so as to be capable of extracting power from the engine and driving the accessory auxiliary device to work; in the non-operating state, the power extraction end is separated from the engine, and the power extraction from the engine is stopped, and the drive of the accessory auxiliary device is stopped. Furthermore, a method for operating the above-described engine power extraction arrangement is described.)

1. An engine power extraction structure, comprising:

the power extraction device comprises two power extraction shafts (1), wherein one end of each power extraction shaft (1) is an extraction end, and the other end of each power extraction shaft is a driving end; wherein the drive end of each power extraction shaft (1) is intended to be connected to an accessory auxiliary device (2);

each of the power extraction shafts (1) has:

an operating state, the extraction end of which is connected to the engine so as to be able to extract power from the engine to drive the accessory auxiliary device (2) to operate;

in the non-operating state, the power extraction end is separated from the engine, and the driving of the accessory auxiliary device (2) is stopped by stopping the power extraction from the engine.

2. The engine power extraction structure of claim 1,

further comprising:

the central transmission mechanism is provided with a driving gear arranged on a front shaft neck of an engine rotor and two driven gears which are in transmission with the driving gear; each power extraction shaft (1) corresponds to one driven gear;

each of said power extraction shafts (1) being in:

when the device is in a working state, the extraction end of the device is meshed with the corresponding driven gear;

when the device is in a non-working state, the extraction end is separated from the corresponding driven gear.

3. The engine power extraction structure of claim 1,

further comprising:

the bearing frame (3) is provided with two hollow support plates (4); each power extraction shaft (1) correspondingly penetrates through one hollow support plate (4) and can move in the corresponding hollow support plate (4) along the radial direction so as to be in a working state or a non-working state.

4. A method of operating an engine power extraction structure, characterized by being implemented based on the engine power extraction structure of any one of claims 1 to 3, comprising:

when the working state of the engine is relatively low, one power extraction shaft (1) is operated to be in the working state, and the other power extraction shaft (1) is operated to be in the non-working state;

when the working state of the engine is relatively high, the two power extraction shafts (1) are operated to be in the working state.

5. The method of operating an engine power extraction structure of claim 4,

further comprising:

when one power extraction shaft (1) has a fault, the power extraction shaft (1) is operated to be in a non-working state, the other power extraction shaft (1) is in a working state, and the working state of the engine is adjusted to be relatively low.

Technical Field

The application belongs to the field of engine power extraction and setting, and particularly relates to an engine power extraction structure and an operation method thereof.

Background

In order to ensure the service life of the engine and enable the engine to work efficiently, related accessory auxiliary devices such as fuel oil, lubricating oil and the like are arranged, and the accessory auxiliary devices need to extract power from the engine through an engine power extraction structure to drive the accessory auxiliary devices to work.

Currently, an engine power extraction structure mostly comprises a central transmission mechanism, a force bearing frame and a power extraction shaft, wherein the central transmission mechanism comprises a driving gear arranged on a front shaft neck of an engine rotor and a driven gear in transmission with the driving gear; the bearing frame is fixed and is provided with a hollow support plate; the power extraction shaft penetrates through the hollow support plate, one end of the power extraction shaft is connected with the driven gear, the other end of the power extraction shaft is connected with the accessory auxiliary device, and the power extraction shaft extracts power from the engine to drive the accessory auxiliary device to work, and the engine power extraction structure at least has the following defects:

1) the accessory auxiliary device is driven to work only by extracting power from the engine through one power extraction shaft, redundant setting is lacked, when the accessory auxiliary device fails, the accessory auxiliary device cannot work normally, and the engine stops running seriously, and the accessory auxiliary device is driven to work only by extracting power from the engine through one power extraction shaft, so that the extracted power is limited, and the improvement of the performance of the accessory auxiliary device is limited;

2) when the engine is in a high working state, the accessory auxiliary device needs to extract higher power from the engine so as to meet the requirement of the engine in the high working state as much as possible, and under the condition that the accessory auxiliary device is driven to work by extracting power from the engine through only one power extraction shaft, the power extraction shaft in the engine power extraction structure and relevant parts of a central transmission mechanism of the power extraction shaft need to be arranged to have higher strength reserve so as to ensure the service life and the reliability of the engine power extraction structure, and the difficulty in arrangement is higher based on the performance of the existing material and the limitation of space;

3) based on the existing conditions, the strength reserve of the power extraction shaft in the power extraction structure of the engine is increased mostly by increasing the diameter of the power extraction shaft, and under the condition that the diameter of the power extraction shaft is increased, the thickness of the hollow support plate is correspondingly increased to ensure that the power extraction shaft can penetrate through the hollow support plate, and the pneumatic performance of the engine is seriously affected by the transitional increase of the thickness of the hollow support plate.

The present application has been made in view of the above-mentioned technical drawbacks.

It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present patent application.

Disclosure of Invention

It is an object of the present application to provide an engine power extraction arrangement and method of operating the same that overcomes or mitigates at least one aspect of the technical disadvantages known to exist.

The technical scheme of the application is as follows:

one aspect provides an engine power extraction structure comprising:

one end of each power extraction shaft is an extraction end, and the other end of each power extraction shaft is a driving end; wherein the drive end of each power extraction shaft is for connection to an accessory auxiliary device;

each power extraction shaft has:

the working state, the extraction end of which is connected to the engine so as to be capable of extracting power from the engine and driving the accessory auxiliary device to work;

in the non-operating state, the power extraction end is separated from the engine, and the power extraction from the engine is stopped, and the drive of the accessory auxiliary device is stopped.

According to at least one embodiment of the present application, the above-described engine power extraction structure further includes:

the central transmission mechanism is provided with a driving gear arranged on a front shaft neck of an engine rotor and two driven gears which are in transmission with the driving gear; each power extraction shaft corresponds to one driven gear;

each power extraction axis is at:

when the device is in a working state, the extraction end of the device is meshed with the corresponding driven gear;

when the device is in a non-working state, the extraction end is separated from the corresponding driven gear.

According to at least one embodiment of the present application, the above-described engine power extraction structure further includes:

the force bearing frame is provided with two hollow support plates; each power extraction shaft correspondingly penetrates through one hollow support plate and can move in the corresponding hollow support plate along the radial direction so as to be in a working state or a non-working state.

In another aspect, there is provided a method of operating an engine power extraction structure, implemented based on any of the above engine power extraction structures, including:

when the working state of the engine is relatively low, one power extraction shaft is operated to be in a working state, and the other power extraction shaft is in a non-working state;

when the working state of the engine is relatively high, the two power extraction shafts are operated to be in the working state.

According to at least one embodiment of the present application, the method of operating the engine power extraction structure further includes:

when one power extraction shaft has a fault, the power extraction shaft is operated to be in a non-working state, the other power extraction shaft is in a working state, and the working state of the engine is relatively low through regulation.

Drawings

FIG. 1 is a schematic illustration of a prior art engine power extraction configuration;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic diagram of an engine power extraction architecture provided by an embodiment of the present application;

FIG. 4 is a sectional view taken along line B-B of FIG. 3;

wherein:

1-power extraction shaft; 2-accessory accessories; 3-a force bearing frame; 4-hollow support plate.

Detailed Description

In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general arrangements, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.

In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The use of the terms "comprising" or "including" and the like in the description of the present application is intended to indicate that the element or item preceding the term covers the element or item listed after the term and its equivalents, without excluding other elements or items.

Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.

The present application is described in further detail below with reference to fig. 1 to 4.

One aspect provides an engine power extraction structure comprising:

two power extraction shafts 1, wherein one end of each power extraction shaft 1 is an extraction end, and the other end is a driving end; wherein the drive end of each power extraction shaft 1 is for connection to an accessory auxiliary device 2;

each power extraction shaft 1 has:

in the working state, the extraction end of the auxiliary device is connected to the engine and can rotate under the driving of the engine, so that power can be extracted from the engine to drive the accessory auxiliary device 2 to work;

in the non-operating state, the power extraction end is disconnected from the engine, and the power extraction from the engine is stopped, and the drive of the accessory auxiliary device 2 is stopped.

With regard to the engine power extraction structure disclosed in the above embodiment, it can be understood by those skilled in the art that the accessory auxiliary device can be driven to operate by extracting power from the engine through the two power extraction shafts 1, when one of the power extraction shafts 1 fails, the power extraction shaft 1 can be operated to be in a non-operating state, and the other power extraction shaft 1 is in an operating state, so that the driving of the accessory auxiliary device can be effectively ensured, and the operation of the accessory auxiliary device can be ensured.

With respect to the engine power extraction structure disclosed in the above embodiment, it will also be understood by those skilled in the art that it may be operated in the following manner:

when the working state of the engine is relatively low, one power extraction shaft 1 is operated to be in the working state, and the other power extraction shaft 1 is in the non-working state, namely when the working state of the engine is relatively low, the accessory auxiliary device can be driven to work by only extracting power from the engine by one power extraction shaft 1;

when the working state of the engine is relatively high, the two power extraction shafts 1 are operated to be in the working state, namely when the working state of the engine is relatively high, the two power extraction shafts 1 extract power from the engine to drive the accessory auxiliary device to work, so that the power extraction shafts 1 do not need to be additionally arranged in a reinforcing manner, and the arrangement difficulty of the power extraction shafts 1 can be effectively reduced;

when one power extraction shaft 1 fails, the power extraction shaft 1 is operated to be in a non-working state so as to be convenient for maintaining and replacing the power extraction shaft 1; the other power extraction shaft 1 is operated to be in a working state, and the working state of the engine is adjusted to be relatively low so as to prevent the power extraction shaft 1 from being damaged.

In some optional embodiments, the above engine power extraction structure further includes:

the central transmission mechanism is provided with a driving gear arranged on a front shaft neck of an engine rotor and two driven gears which are in transmission with the driving gear; each power extraction shaft 1 corresponds to one driven gear;

each power extraction shaft 1 is at:

when the device is in a working state, the extraction end of the device is meshed with the corresponding driven gear;

when the device is in a non-working state, the extraction end is separated from the corresponding driven gear.

With regard to the engine power extraction structure disclosed in the above embodiment, it will be further understood by those skilled in the art that a corresponding driving mechanism may be provided to drive each power extraction shaft 1 to operate, so that the operating end of the power extraction shaft 1 can be engaged with or disengaged from the corresponding driven gear, so as to operate the power extraction shaft 1 to switch between an operating state and a non-operating state.

In some optional embodiments, the above engine power extraction structure further includes:

the force bearing frame 3 is provided with two hollow support plates 4; each power extraction shaft 1 correspondingly penetrates through one hollow support plate 4 and can move in the corresponding hollow support plate 4 along the radial direction so as to be switched between a working state and a non-working state.

With regard to the engine power extraction structure disclosed in the above embodiment, it can be further understood by those skilled in the art that, since additional reinforcement is not required for each power extraction shaft 1, the power extraction shaft 1 has a relatively small diameter, is disposed through the hollow support plate 4, and moves in the radial direction in the hollow support plate 4, without additionally increasing the thickness of the hollow support plate 4, and does not affect the aerodynamic performance of the engine.

In another aspect, there is provided a method of operating an engine power extraction structure, implemented based on any of the above engine power extraction structures, including:

when the working state of the engine is relatively low, one power extraction shaft 1 is operated to be in a working state, and the other power extraction shaft 1 is operated to be in a non-working state;

when the working state of the engine is relatively high, the two power extraction shafts 1 are operated to be in the working state.

In some optional embodiments, the method of operating the engine power extraction structure further includes:

when one power extraction shaft 1 has a fault, the power extraction shaft 1 is operated to be in a non-working state, the other power extraction shaft 1 is in a working state, and the working state of the engine is relatively low through regulation.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.