An integrated gearbox and an aeroengine having the same

Abstract

The present invention belongs to the technical field of auxiliary power units, and specifically discloses an integrated gearbox and an aeroengine having the same. In the integrated gearbox, by integrally casting the oil circuit and the casing, compared with the existing solution of using an independent hose as the lubricating oil passage, the present application enables the R & D personnel to regularize the internal and external layouts of the casing in advance to achieve the expected effect, and it is easier to achieve the required compact layout, making the inside and outside of the casing more beautiful. At the same time, since the oil circuit and the casing are integrally cast, the position of the oil circuit inside the gearbox is fixed after molding, and there will be no phenomenon that the internal layout of the casing is complicated and the maintenance work of the maintenance personnel is hindered due to being easily affected by the outside when using a hose, thus improving the reliability of the casing.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary power units, and particularly to an integrated gearbox and an aero-engine having the same. Background Art

[0002] An aero-gearbox is a transmission component of an auxiliary power unit. When the auxiliary power unit starts, the power of the starting motor is transmitted to the core engine rotor and various accessories through the gearbox; after the auxiliary power unit starts, the power is transmitted from the core engine rotor to the gearbox, and the gear train of the gearbox drives accessories such as generators, starters, fuel control devices, lubricating oil power devices, and cooling devices to work respectively.

[0003] Existing conventional gearboxes often include transmission accessories such as gears. During operation, lubricating oil is required to lubricate these transmission accessories to reduce friction and lower the temperature. During design, multiple lubricating oil pipelines are also provided inside the gearbox for cooling and lubricating the internal accessories of the gearbox. When arranging this part of the lubricating oil pipelines, oil guide pipes are often used, and nozzles are provided at the outlets of the oil guide pipes facing the internal accessories of the gearbox. In addition, the oil guide pipes are fixedly installed in the gearbox through fixing parts such as cable ties. At this time, the oil guide pipes are used to guide the lubricating oil to the required positions, and nozzles connected to the oil guide pipes are also provided inside the gearbox; pipelines are provided outside the gearbox to transmit the lubricating oil inside the gearbox to accessories such as generators outside the gearbox for cooling.

[0004] However, the oil guide pipes used inside the gearbox need to be provided with nozzles to lubricate and cool the internal accessories of the gearbox. This will occupy a part of the layout inside the gearbox, and after the installation of the oil guide pipes and nozzles, the layout inside the gearbox will be relatively complex, seriously affecting the maintenance operation of the internal accessories of the gearbox. At the same time, since there are external pipelines connected to the spaces where many transmission accessories are located outside the gearbox, the external pipelines are numerous and messy, resulting in insufficient aesthetics, reliability, and maintainability of the gearbox, and thus insufficient practicality of the gearbox. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that the internal lubricating oil pipelines and external pipelines of the gearbox in the existing solution will result in insufficient aesthetics, reliability, and maintainability of the gearbox, thus leading to insufficient practicality of the gearbox.

[0006] To this end, the present invention provides an integrated gearbox, comprising:

[0007] A casing provided with an installation cavity and an oil storage cavity spaced along the height direction, the oil storage cavity being used for storing lubricating oil;

[0008] The oil circuit is integrally cast with the casing. The oil circuit includes an oil pumping channel, a first oil supply channel, and an oil and gas discharge channel. The oil pumping channel is arranged in the installation cavity and extends to the oil storage cavity. The first oil supply channel is arranged outside the casing and communicates with the oil pumping channel. The oil and gas discharge channel is arranged in the installation cavity and is used for collecting the oil and gas mixture inside each accessory.

[0009] Optionally, for the above integrated gearbox,

[0010] The casing is formed with a first accessory interface, a first oil supply interface, an intermediate interface, and a first oil return interface. The first accessory interface is arranged on the side away from the oil storage cavity and is used for installing the first pump body. The intermediate interface is arranged below the first accessory interface in the height direction, and the intermediate interface communicates with the oil storage cavity through the oil pumping channel. The first oil supply interface is arranged above the first accessory interface in the height direction. One end of the first oil supply interface communicates with the intermediate interface through the first pump body, and the other end of the first oil supply interface communicates with the first oil supply channel. The first oil return interface is arranged between the first accessory interface and the intermediate interface in the height direction and communicates with the space where the lubricating oil accumulates in the first pump body. Under the action of the first pump body, the lubricating oil temporarily stored in the oil storage cavity enters the first oil supply channel after passing through the oil pumping channel, the intermediate interface, the first pump body, and the first oil supply interface in sequence. The oil circuit further includes a first oil return channel. The first oil return channel is arranged below the first accessory interface. One end of the first oil return channel communicates with the oil storage cavity, and the other end of the first oil return channel communicates with the first oil return interface.

[0011] The oil and gas discharge channel communicates with the space where the first pump body is located.

[0012] Optionally, for the above integrated gearbox,

[0013] The casing is also formed with a second accessory interface, a liquid separation interface, a second oil supply interface, a second oil return interface and a third oil return interface. The second accessory interface is arranged on a side far from the oil storage cavity and is spaced from the first accessory interface. The second accessory interface is used for installing a motor. The liquid separation interface is arranged between the first accessory interface and the second accessory interface, and the liquid separation interface is communicated with the first oil supply passage. The second oil supply interface is arranged horizontally between the second accessory interface and the liquid separation interface and is used for connecting the liquid separation interface with the space where the motor is located. The lubricating oil in the first oil supply passage enters the space where the motor is located through the liquid separation interface and then enters the second oil supply interface to cool the motor. The second oil return interface is arranged below the second accessory interface in the height direction and the second oil return interface is communicated with the space where the motor is located. The third oil return interface is arranged between the second accessory interface and the oil storage cavity in the height direction and the third oil return interface is arranged below the first accessory interface in the height direction;

[0014] The oil circuit further includes a second oil return passage. The second oil return passage is arranged between the second accessory interface and the oil storage cavity, and the second oil return passage communicates the second oil return interface and the third oil return interface. Under the action of the first pump body, the lubricating oil accumulated in the space where the motor is located is recovered into the oil storage cavity after passing through the second oil return interface, the second oil return passage and the third oil return interface in sequence;

[0015] The oil and gas discharge passage is communicated with the space where the motor is located.

[0016] Optionally, for the above integrated gearbox,

[0017] The casing is also formed with a third oil supply interface and a fourth oil supply interface. Both the third oil supply interface and the fourth oil supply interface are formed between the second accessory interface and the second oil supply interface, and the fourth oil supply interface is located above the left side of the third oil supply interface. Both the third oil supply interface and the fourth oil supply interface are communicated with the first oil supply passage, and a lubrication interface is arranged on the installation cavity side to provide a lubrication passage for the gearbox;

[0018] The oil circuit has a second oil supply passage. Two ends of the second oil supply passage are respectively communicated with the third oil supply interface and the fourth oil supply interface. The lubricating oil in the first oil supply passage sequentially passes through the liquid separation interface, the second oil supply interface, the third oil supply interface, the second oil supply passage and the fourth oil supply interface. The second oil supply interface is used for motor cooling and lubrication, and both the third oil supply interface and the fourth oil supply interface are used for lubricating and cooling the gearbox.

[0019] Optionally, the above integrated gearbox further includes:

[0020] The mounting part is integrally cast with the casing. The mounting part has a first channel interface communicating with the first oil supply interface and a second channel interface communicating with the first oil supply channel. The mounting part is used for mounting a cooling part, and a fourth oil supply channel with two ends respectively communicating with the first channel interface and the second channel interface is arranged inside the cooling part. The lubricating oil temporarily stored in the oil storage cavity sequentially passes through the oil pumping channel, the intermediate interface, the first oil supply interface, the first channel interface, the fourth oil supply channel, the second channel interface, and the first oil supply channel and then enters the liquid separation interface.

[0021] Optionally, the above integrated gearbox further includes:

[0022] The casing is further formed with a fifth oil supply interface and a fourth oil return interface. The fifth oil supply interface and the fourth oil return interface are formed on the outer surface of the casing, and the fourth oil return interface communicates with the first oil return channel;

[0023] The oil circuit has a third oil supply channel. The third oil supply channel communicates with the fifth oil supply interface. The lubricating oil in the first oil supply channel enters the third oil supply channel after passing through the liquid separation interface, then enters other components through the fifth oil supply interface for lubrication and cooling, and enters the first oil return channel through the fourth oil return interface and then returns to the oil storage cavity through the first oil return interface.

[0024] Optionally, the above integrated gearbox,

[0025] The casing is further formed with an oil-gas mixture inlet, and the oil-gas mixture inlet is arranged on one side of the first accessory interface;

[0026] The oil-gas discharge channel communicates with the oil-gas mixture.

[0027] Optionally, the above integrated gearbox further includes:

[0028] A transmission gear shaft is installed in the installation cavity. The transmission gear shaft includes a gear structure and a rotating shaft structure. The gear structure and the rotating shaft structure are integrally connected and a transition structure is formed at the connection. The transmission gear shaft has a first through hole, a gas channel, and a mixing channel. The first through hole is arranged on the transition structure. The gas channel is arranged inside the rotating shaft structure, and the gas channel communicates with the installation cavity through the first through hole. One side opening of the mixing channel is arranged on the end face of the gear structure away from the transition structure. The other side opening of the mixing channel is connected with the gas channel, and the axis of the mixing channel is arranged crosswise with the axis of the gas channel. The mixing channel is used for separating the oil-gas mixture and conveying the lubricating oil after oil-gas separation of the oil-gas mixture to the oil storage cavity.

[0029] Optionally, the above integrated gearbox further includes:

[0030] A pressure relief member, which is installed outside the casing, and the pressure relief member is arranged on a side of the transition structure away from the gear structure. The pressure relief member is provided with an exhaust hole, and the axis of the exhaust hole is arranged to intersect with the axis of the gas passage. The exhaust hole is communicated with the gas passage for conveying the gas after the oil-gas mixture is separated to the outside of the casing.

[0031] Optionally, for the above integrated gearbox,

[0032] The transmission gear shaft further includes a barring hole, and the barring hole is arranged on a side of the transmission gear shaft close to the pressure relief member and is communicated with the gas passage.

[0033] Optionally, the above integrated gearbox further includes:

[0034] A plugging member, and the plugging member is detachably installed at the exhaust hole.

[0035] An aeroengine includes the above integrated gearbox.

[0036] The technical solution provided by the present invention has the following advantages:

[0037] The integrated gearbox provided by the present invention includes a casing and an oil passage. Among them, the casing is provided with an installation cavity and an oil storage cavity which are arranged at intervals along the height direction. The oil storage cavity is used for storing lubricating oil; the oil passage is integrally cast with the casing. The oil passage includes an oil pumping passage, a first oil supply passage and an oil-gas discharge passage. The oil pumping passage is arranged in the installation cavity and extends into the oil storage cavity. The first oil supply passage is arranged outside the casing and is communicated with the oil pumping passage. The oil-gas discharge passage is arranged in the installation cavity, and the oil-gas discharge passage is used for collecting the oil-gas mixture inside each accessory.

[0038] For the integrated gearbox with this structure, by integrally casting the oil passage and the casing, compared with the existing solution of using an independent hose as the lubricating oil passage, in this application, the R & D personnel can regularize the layout inside and outside the casing in advance to achieve the expected effect, and it is easier to achieve the required compact layout, making the inside and outside of the casing more beautiful. At the same time, because the oil passage is integrally cast with the casing, the oil passage inside the casing is fixed after molding and will not occur the phenomenon that when using a hose, it is easily affected by the outside, resulting in a complex layout inside the casing and preventing maintenance personnel from carrying out maintenance work, thus improving the reliability of the casing. Description of the Drawings

[0039] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0040] Figure 1 Partial cross-sectional view of the integrated gearbox provided by the embodiment of the present invention;

[0041] Figure 2 Schematic structural diagram of the integrated gearbox provided by the embodiment of the present invention;

[0042] Figure 3 Schematic structural diagram of the integrated gearbox provided by the embodiment of the present invention;

[0043] Explanation of reference numerals:

[0044] 1 - Casing; 101 - Installation cavity; 102 - Oil storage cavity; 103 - First accessory interface; 104 - First oil supply interface; 105 - Second accessory interface; 106 - Second oil supply interface; 107 - Third oil supply interface; 108 - Fourth oil supply interface; 109 - Other accessory interfaces; 111 - Installation flange; 112 - Intermediate interface; 113 - First oil return interface; 114 - Liquid separation interface; 115 - Second oil return interface; 116 - Third oil return interface; 117 - Fastening interface; 118 - Oil-gas mixture inlet; 119 - Fifth oil supply interface; 120 - Fourth oil return interface;

[0045] 201 - Oil pumping channel; 202 - First oil supply channel; 203 - Oil-gas discharge channel; 204 - First oil return channel; 205 - Second oil return channel; 206 - Second oil supply channel; 207 - Third oil supply channel;

[0046] 3 - Mounting part; 301 - First channel interface; 302 - Second channel interface;

[0047] 4 - Transmission gear shaft; 401 - Gear structure; 402 - Rotating shaft structure; 403 - Transition structure; 404 - First through hole; 405 - Gas channel; 406 - Mixing channel; 407 - Turning hole;

[0048] 5 - Pressure relief part; 501 - Exhaust hole;

[0049] 6 - Sealing part;

[0050] 7 - Mounting section;

[0051] 8 - Detection part. Specific embodiments

[0052] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0054] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0055] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0056] Embodiment 1

[0057] In this embodiment, an integrated gearbox is provided, as Figures 1 to 3 shown, which includes a casing 1 and an oil circuit. Among them, the casing 1 is provided with an installation cavity 101 and an oil storage cavity 102 that are spaced along the height direction. The oil storage cavity 102 is used to store lubricating oil; the oil circuit is integrally cast with the casing 1. The oil circuit includes an oil pumping channel 201, a first oil supply channel 202, and an oil and gas discharge channel 203. The oil pumping channel 201 is arranged in the installation cavity 101 and extends into the oil storage cavity 102. The first oil supply channel 202 is arranged outside the casing 1 and communicates with the oil pumping channel 201. The oil and gas discharge channel 203 is arranged in the installation cavity 101, and the oil and gas discharge channel 203 is used to collect the oil and gas mixture inside each accessory.

[0058] When the integrated gearbox provided in this embodiment is in use, by integrally casting the oil circuit and the casing 1, compared with the existing solution of using an independent hose as the lubricating oil channel, the integrated gearbox of this structure allows the R & D personnel to regularize the internal and external layouts of the casing 1 in advance to achieve the expected effect, and it is easier to achieve the required compact layout, making the inside and outside of the casing 1 more beautiful. At the same time, since the oil circuit and the casing 1 are integrally cast, the position of the oil circuit inside the casing 1 is fixed after molding, and there will be no phenomenon that the internal layout of the casing 1 becomes more complex due to being easily affected by the outside world when using a hose, thus preventing the maintenance work of the maintenance personnel, and improving the reliability of the casing 1.

[0059] Since the oil storage cavity 102 and the installation cavity 101 are arranged at intervals in the height direction, therefore, in the integrated gearbox provided in this embodiment, after the lubricating oil enters the oil pumping channel 201 from the oil storage cavity 102, it will be affected by its own gravity and thus can only intermittently enter the inside of the first oil supply channel 202 placed in the installation cavity 101. Therefore, it is also necessary to add an installation position for installing the first pump body on the casing, so that when the integrated gearbox is working, the driving force of the first pump body can directly act on the lubricating oil to accelerate the flow rate of the lubricating oil and improve the continuity of transmitting the lubricating oil into the first oil supply channel 202. Thus, as one of the implementation manners, such as Figures 1 to 3As shown in the figure, for the integrated gearbox provided in this embodiment, the housing 1 is formed with a first accessory interface 103, a first oil supply interface 104, an intermediate interface 112, and a first oil return interface 113. The first accessory interface 103 is arranged on the side away from the oil storage cavity 102 and is used for installing the first pump body. The intermediate interface 112 is arranged below the first accessory interface 103 in the height direction, and the intermediate interface 112 is communicated with the oil storage cavity 102 through an oil pumping channel 201. The first oil supply interface 104 is arranged above the first accessory interface 103 in the height direction. One end of the first oil supply interface 104 is communicated with the intermediate interface 112 through the first pump body, and the other end of the first oil supply interface 104 is communicated with a first oil supply channel 202. The first oil return interface 113 is arranged between the first accessory interface 103 and the intermediate interface 112 in the height direction and is communicated with the space where the lubricating oil accumulated in the first pump body is located. Under the action of the first pump body, the lubricating oil temporarily stored in the oil storage cavity 102 enters the first oil supply channel 202 after passing through the oil pumping channel 201, the intermediate interface 112, the first pump body, and the first oil supply interface 104 in sequence. The oil circuit further includes a first oil return channel 204. The first oil return channel 204 is arranged below the first accessory interface 103, and one end of the first oil return channel 204 is communicated with the oil storage cavity 102, and the other end of the first oil return channel 204 is communicated with a fourth oil return interface 120. An oil and gas discharge channel 203 is communicated with the space where the first pump body is located, so that the oil and gas mixture in the space where the first pump body is located can be discharged into the installation cavity 101 through the oil and gas discharge channel 203.

[0060] When the integrated gearbox provided in this embodiment is in use, a first accessory interface 103 for installing a first pump body is formed on the casing 1, and one end of the first oil supply interface 104 is communicated with the intermediate interface 112 through the first pump body, and the other end of the first oil supply interface 104 is communicated with the first oil supply channel 202. In this way, the first oil supply channel 202 and the space where the first pump body is located can be connected, and a first oil return channel 204 is provided to form the first flow circuit of the lubricating oil. In this way, the first pump body can pump out the lubricating oil in the oil storage cavity 102, pass through the oil pumping channel 201 and the intermediate interface 112, then enter the first pump body, and then be transmitted into the first oil supply channel 202 through the first pump body and the first oil supply interface 104. At this time, a part of the lubricating oil will accumulate in the space where the first pump body is located. Since the first oil return interface 113 is communicated with the space where the first pump body is located, this part of the lubricating oil will be recovered into the oil storage cavity 102 after passing through the first oil return interface 113 and the first oil return channel 204 in sequence. At the same time, the first pump body will also pump back the oil-gas mixture generated in each accessory. At this time, since the oil-gas discharge channel 203 is directly communicated with the space where the first pump body is located, the generated oil-gas mixture will continuously enter the inside of the casing 1, so that the pressure in the space where the first pump body is located is within a safe range and remains stable, and the operation of the first pump body will not be affected due to the increase of the pressure inside the space where the first pump body is located to the threshold value.

[0061] It can be explained that in order to reduce costs, the first pump body can be selected as a lubricating oil pump when selecting the type of the first pump body, and the process of pumping out the lubricating oil in the oil storage cavity 102 is realized by forming a negative pressure environment inside the pump.

[0062] Since the gearbox in the existing solution is a transmission component for auxiliary power, that is, when the auxiliary power device is in the starting state, the power of the starting motor needs to be transmitted to the core engine rotor and each accessory through the gearbox; after the auxiliary power device starts, the core engine rotor transmits the power to the gearbox, and the gearbox drives accessories such as the motor and the fuel control device respectively. Therefore, in order to improve the integration degree of the gearbox, the channel connecting the external transmission accessories of the casing 1 and the oil storage cavity 102 can be integrally formed with the casing 1. As one of the implementation manners, such as Figures 1 to 3As shown in the figure, for the integrated gearbox provided in this embodiment, the housing 1 should also be formed with a second accessory interface 105, a liquid separation interface 114, a second oil supply interface 106, a second oil return interface 115, and a third oil return interface 116. The second accessory interface 105 is arranged on the side away from the oil storage cavity 102 and is spaced from the first accessory interface 103. The second accessory interface 105 is used to install the motor. The liquid separation interface 114 is arranged between the first accessory interface 103 and the second accessory interface 105, and the liquid separation interface 114 is communicated with the first oil supply channel 202. The second oil supply interface 106 is arranged horizontally between the second accessory interface 105 and the liquid separation interface 114 and is used to connect the liquid separation interface 114 and the space where the motor is located. The lubricating oil in the first oil supply channel 202 enters the space where the motor is located through the liquid separation interface 114 to cool the motor. The second oil return interface 115 is arranged vertically below the second accessory interface 105 and the second oil return interface 115 is communicated with the space where the motor is located. The third oil return interface 116 is arranged vertically between the second accessory interface 105 and the oil storage cavity 102 and the third oil return interface 116 is arranged vertically below the first accessory interface 103; the oil circuit further includes a second oil return channel 205. The second oil return channel 205 is arranged between the second accessory interface 105 and the oil storage cavity 102, and the second oil return channel 205 connects the second oil return interface 115 and the third oil return interface 116. Under the action of the first pump body, the lubricating oil accumulated in the space where the motor is located is recovered into the oil storage cavity 102 after passing through the second oil return interface 115, the second oil return channel 205, and the third oil return interface 116 in sequence; the oil and gas discharge channel 203 is communicated with the space where the motor is located.

[0063] For the integrated gearbox provided in this embodiment, during use, through the setting of the second accessory interface 105, the motor can be integrally arranged on the casing 1, effectively improving the integration degree of the gearbox. Also, by setting the second oil supply interface 106 to connect the first oil supply channel 202 with the space where the motor is located, and setting the second oil return channel 205, a second flow path of the lubricating oil is formed. This flow path is set based on the first flow path. That is, the first pump body drives the lubricating oil in the first flow path from the first oil supply channel 202 to the liquid separation interface 114 and then into the space where the motor is located to lubricate and cool the transmission part of the motor. Similarly, after lubricating the transmission part of the motor, this part of the lubricating oil will accumulate in the space where the motor is located under the influence of its own gravity. At this time, through the setting of the second oil return interface 115, the second oil return channel 205, and the third oil return interface 116, this part of the lubricating oil can be recovered into the oil storage cavity 102. At the same time, the first pump body continuously pumps back the oil-gas mixture generated by each component during operation. This part of the oil-gas mixture continuously enters the interior of the casing 1, making the pressure in the space where the first pump body is located within the installation range and maintaining stability, and preventing the working of the transmission part of the motor from being affected due to the pressure in the space where the motor is located rising to the threshold value.

[0064] To further increase the integration degree of the gearbox, the channel connecting the space where the motor is located and the installation cavity 101 in the casing 1 should also be integrally formed with the casing 1. As one implementation, as Figures 1 to 3 shown, for the integrated gearbox provided in this embodiment, the casing 1 should also be formed with a third oil supply interface 107 and a fourth oil supply interface 108. Both the third oil supply interface 107 and the fourth oil supply interface 108 are formed between the second accessory interface 105 and the second oil supply interface 106, and the fourth oil supply interface 108 is located above the left side of the third oil supply interface 107. The third oil supply interface 107 is used to connect with the first oil supply channel 202, and the fourth oil supply interface 108 is used to connect with the installation cavity 101. The oil path has a second oil supply channel 206, and both ends of the second oil supply channel 206 are connected to the third oil supply interface 107 and the fourth oil supply interface 108 respectively. The lubricating oil in the first oil supply channel 202 sequentially passes through the liquid separation interface 114, the second oil supply interface 106, the third oil supply interface 107, the second oil supply channel 206, and the fourth oil supply interface 108. Among them, the second oil supply interface 106 is used for motor cooling and lubrication, and both the third oil supply interface 107 and the fourth oil supply interface 108 are used for lubricating and cooling the gearbox.

[0065] It should be noted that the integrated gearbox provided in this embodiment may further include a mounting flange 111. At this time, the mounting flange 111 is formed at the second accessory interface 105 of the casing 1 for mounting the motor to support the motor and seal it; and the third oil supply interface 107, the fourth oil supply interface 108 and the second oil supply channel 206 are formed on the end face of the mounting flange 111, and the rest of the settings are the same as those in the above embodiment.

[0066] Of course, since the accessories inside and outside the gearbox continuously generate heat during operation, the temperature of the lubricating oil will continue to rise until it affects the transmission state of the gearbox. Therefore, a cooling component needs to be added to cool the lubricating oil. As one of the implementation manners, as Figures 1 to 3 shown, the integrated gearbox provided in this embodiment further includes a mounting member 3. At this time, the mounting member 3 is integrally cast with the casing 1. The mounting member 3 has a first channel interface 301 communicating with the first oil supply interface 104 and a second channel interface 302 communicating with the first oil supply channel 202. The mounting member 3 is used to mount the cooling component. The cooling component is internally provided with a fourth oil supply channel with both ends respectively communicating with the first channel interface 301 and the second channel interface 302. The lubricating oil temporarily stored in the oil storage cavity 102 sequentially passes through the oil pumping channel 201, the intermediate interface 112, the first oil supply interface 104, the first channel interface 301, the fourth oil supply channel, the second channel interface 302, and the first oil supply channel 202 and then enters the liquid separation interface 114.

[0067] When the integrated gearbox provided in this embodiment is in use, by forming a third oil supply interface 107, a fourth oil supply interface 108 and a second oil supply channel 206 on the casing 1 that communicate the first oil supply channel 202 and the installation cavity 101, a third flow path of the lubricating oil is formed. This flow path is set on the basis of the first flow path. At this time, the lubricating oil in the first oil supply channel 202 passes through the liquid separation interface 114 and then sequentially passes through the third oil supply interface 107, the fourth oil supply interface 108 and the second oil supply channel 206 and then enters the interior of the installation cavity 101, and the third flow path is arranged in parallel with the second flow path. In this way, under the action of the first pump body, the lubricating oil in the first flow path is driven into the fourth oil supply interface 108 and then into the installation cavity 101 to lubricate and cool each transmission part installed in the installation cavity 101; similarly, since the installation cavity 101 and the oil storage cavity 102 are arranged at intervals in the height direction, the lubricating oil in the third flow path will directly return to the oil storage cavity 102 under the influence of its own gravity after lubricating the transmission parts installed inside the installation cavity 101; at the same time, heat will be absorbed and evaporated to form an oil-gas mixture when lubricating the transmission parts inside the installation cavity 101. At this time, since this part of the oil-gas mixture is directly inside the casing 1, no additional structure is provided to guide this part of the oil-gas mixture into the interior of the casing 1.

[0068] The integrated gearbox provided in this embodiment can also lubricate and cool components outside the gearbox. That is, as Figures 1 to 3 shown, in this embodiment, the housing 1 is further formed with a fifth oil supply interface 119 and a fourth oil return interface 120. The fifth oil supply interface 119 and the fourth oil return interface 120 are formed on the outer surface of the housing 1. The fourth oil return interface 120 is communicated with the first oil return passage 204; the oil path has a third oil supply passage 207. The two sides of the third oil supply passage 207 are respectively communicated with the fifth oil supply interface 119 and the liquid separation interface 114. The lubricating oil in the first oil supply passage 202 enters the third oil supply passage 207 after passing through the liquid separation interface 114, then enters other components through the fifth oil supply interface 119 for lubrication and cooling, and enters the first oil return passage 204 through the fourth oil return interface 120, and then returns to the oil storage cavity 102 through the first oil return interface 113.

[0069] In addition, when lubricating and cooling the accessories installed inside the gearbox and the accessories arranged outside the gearbox with lubricating oil, an oil-gas mixture will be generated. If the oil-gas mixture is not removed, the pressure in the space where each accessory is located will gradually increase, which may pose a safety hazard. As one implementation method, the oil-gas mixture in the space where each accessory is located is discharged into the housing 1 of the gearbox for oil-gas separation. That is, during implementation, as Figures 1 to 3 shown, the integrated gearbox provided in this embodiment further includes a transmission gear shaft 4. At this time, the transmission gear shaft 4 is installed in the installation cavity 101, and the transmission gear shaft 4 is set to include a gear structure 401 and a rotating shaft structure 402. The gear structure 401 and the rotating shaft structure 402 are integrally connected and form a transition structure 403 at the connection; the transmission gear shaft 4 has a first through hole 404, a gas passage 405 and a mixing passage 406. The first through hole 404 is arranged on the transition structure 403. The gas passage 405 is arranged inside the rotating shaft structure 402, and the gas passage 405 is communicated with the installation cavity 101 through the first through hole 404. One side opening of the mixing passage 406 is arranged on the end surface of the gear structure 401 away from the transition structure 403. The other side opening of the mixing passage 406 is communicated with the gas passage 405, and the axis of the mixing passage 406 intersects with the axis of the gas passage 405. The mixing passage 406 is used to convey the lubricating oil after oil-gas separation of the oil-gas mixture into the oil storage cavity 102.

[0070] Since the gas formed after the oil-gas mixture undergoes oil-gas separation is stored in the housing 1, therefore, this part of the gas needs to be guided outside the housing. So, during implementation, as Figure 1 and Figure 3As shown in the figure, the integrated gearbox provided in this embodiment should further include a pressure relief component 5. At this time, the pressure relief component 5 is installed on the casing 1, and the pressure relief component 5 is arranged on the side of the transition structure 403 away from the gear structure 401. The pressure relief component 5 is provided with an exhaust hole 501, and the axis of the exhaust hole 501 is arranged to intersect with the axis of the gas passage 405. The exhaust hole 501 is communicated with the gas passage 405 for transporting the gas after oil-gas mixture separation to the outside of the casing 1.

[0071] Further, as Figure 1 shown in the figure, the integrated gearbox provided in this embodiment should further include a plugging component 6. At this time, the plugging component 6 is detachably installed at the exhaust hole 501, which can facilitate turning the gearbox by hand to check the rotating parts of the gearbox during maintenance, reduce the time for maintenance personnel to maintain the internal accessories of the gearbox, and effectively improve the practicability of the integrated gearbox.

[0072] In the integrated gearbox provided in this embodiment, during use, through the settings of the first through hole 404, the gas passage 405 and the mixing passage 406, and the transmission gear shaft 4 is installed in the installation cavity 101. After the oil-gas mixture enters the installation cavity 101 inside the casing 1, due to the gradually increasing pressure, at this time, the pressure inside the mixing passage 406 is relatively low. Therefore, the oil-gas mixture will gradually enter the mixing passage 406 from the installation cavity 101, and then through the rotation of the transmission gear shaft 4, centrifugal force is generated, separating the lubricating oil and the gas. At this time, the lubricating oil with a heavier mass will adhere to the inner wall of the mixing passage 406 and gradually form oil droplets with an increasing volume. This part of the oil droplets enters the oil storage cavity 102 through the mixing passage 406, that is Figure 1 the M direction in is the flowing direction of the lubricating oil after oil-gas separation; the gas with a lighter mass is discharged to the outside through the exhaust hole 501, that is Figure 1 the K direction in is the flowing direction of the gas after oil-gas separation.

[0073] Since the gearbox needs to be maintained as required after working for a period of time, therefore, a turning hole 407 should also be integrated on the casing of the gearbox in this embodiment. During implementation, as Figures 1 to 3 shown in the figure, the transmission gear shaft 4 further includes a turning hole 407. At this time, the turning hole 407 is arranged on the side of the transmission gear shaft 4 close to the pressure relief component 5 and is communicated with the gas passage 405. In this way, the plugging component 6 can be opened, and the turning hole 407 can be used to determine whether the rotor works flexibly.

[0074] It can be explained that the integrated gearbox provided in this embodiment further includes a mounting lug 7. Among them, the mounting lug 7 is arranged above the casing 1 for connection and fixation with the outside.

[0075] It should be noted that the integrated gearbox provided in this embodiment further includes a detector 8. At this time, the detector 8 is installed at the connection between the mounting section 7 and the casing 1, and the detector 8 is electrically connected to an external terminal. Among them, the detector 8 is selected as a sensor for detecting the amplitude of the casing 1. The detector 8 is used to form a first amplitude parameter from the detected amplitude and feedback the first amplitude parameter to the external terminal for R & D personnel to analyze it.

[0076] Furthermore, for the integrated gearbox provided in this embodiment, other accessory interfaces 109 for installing other accessories should also be formed on the casing 1 for R & D personnel to detect other required data, such as the temperature of the lubricating oil, the cavity pressure inside the casing 1, the oil supply pressure, etc. At the same time, the number of other accessory interfaces 109 is not limited and can be selected according to requirements.

[0077] It should be noted that for the integrated gearbox provided in this embodiment, the casing 1 should also be formed with a fastening interface 117 and an oil-gas mixture inlet 118. At this time, the fastening interface 117 is used to install fasteners such as screws, and the oil-gas mixture inlet 118 is communicated with the oil-gas discharge channel 203. The oil-gas mixture inlet 118 is arranged on one side of the first accessory interface 103, and the oil-gas discharge channel 203 is communicated with the oil-gas mixture inlet 118.

[0078] Embodiment 2

[0079] This embodiment provides an aeroengine, including the integrated gearbox in Embodiment 1.

[0080] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An integrated gearbox, characterized in that, it includes: A casing (1) is provided with an installation cavity (101) and an oil storage cavity (102) spaced along the height direction. The oil storage cavity (102) is used for storing lubricating oil; the casing (1) is formed with a first accessory interface (103), a first oil supply interface (104), an intermediate interface (112) and a first oil return interface (113). The first accessory interface (103) is arranged on the side away from the oil storage cavity (102) and is used for installing a first pump body. The intermediate interface (112) is arranged below the first accessory interface (103) along the height direction, and the intermediate interface (112) is communicated with the oil storage cavity (102) through an oil pumping channel (201). The first oil supply interface (104) is arranged above the first accessory interface (103) along the height direction. One end of the first oil supply interface (104) is communicated with the intermediate interface (112) through a first pump body, and the other end of the first oil supply interface (104) is communicated with a first oil supply channel (202). The first oil return interface (113) is arranged between the first accessory interface (103) and the intermediate interface (112) along the height direction and is communicated with the space where the lubricating oil accumulated in the first pump body is located. Under the action of the first pump body, the lubricating oil temporarily stored in the oil storage cavity (102) sequentially passes through the oil pumping channel (201), the intermediate interface (112), the first pump body and the first oil supply interface (104) and then enters the first oil supply channel (202); An oil circuit is integrally cast with the casing (1). The oil circuit includes an oil pumping channel (201), a first oil supply channel (202) and an oil and gas discharge channel (203). The oil pumping channel (201) is arranged in the installation cavity (101) and extends into the oil storage cavity (102). The first oil supply channel (202) is arranged outside the casing (1) and is communicated with the oil pumping channel (201). The oil and gas discharge channel (203) is arranged in the installation cavity (101), and the oil and gas discharge channel (203) is used for collecting the oil and gas mixture inside each accessory; the oil and gas discharge channel (203) is communicated with the space where the first pump body is located; the oil circuit further includes a first oil return channel (204). The first oil return channel (204) is arranged below the first accessory interface (103). One end of the first oil return channel (204) is communicated with the oil storage cavity (102), and the other end of the first oil return channel (204) is communicated with the first oil return interface (113).

2. The integrated gearbox according to claim 1, characterized in that, The housing (1) is further formed with a second accessory interface (105), a liquid separation interface (114), a second oil supply interface (106), a second oil return interface (115), and a third oil return interface (116). The second accessory interface (105) is arranged on a side away from the oil storage cavity (102) and is spaced from the first accessory interface (103). The second accessory interface (105) is used for installing a motor. The liquid separation interface (114) is arranged between the first accessory interface (103) and the second accessory interface (105), and the liquid separation interface (114) is communicated with the first oil supply passage (202). The second oil supply interface (106) is arranged horizontally between the second accessory interface (105) and the liquid separation interface (114) and is used for communicating the liquid separation interface (114) with the space where the motor is located. The lubricating oil in the first oil supply passage (202) enters the second oil supply interface (106) after passing through the liquid separation interface (114) and then enters the space where the motor is located to cool the motor. The second oil return interface (115) is arranged below the second accessory interface (105) in the height direction and is communicated with the space where the motor is located. The third oil return interface (116) is arranged between the second accessory interface (105) and the oil storage cavity (102) in the height direction and is arranged below the first accessory interface (103) in the height direction; The oil circuit further includes a second oil return passage (205). The second oil return passage (205) is arranged between the second accessory interface (105) and the oil storage cavity (102), and the second oil return passage (205) communicates the second oil return interface (115) and the third oil return interface (116). Under the action of the first pump body, the lubricating oil accumulated in the space where the motor is located sequentially passes through the second oil return interface (115), the second oil return passage (205), and the third oil return interface (116) and then is recovered into the oil storage cavity (102); The oil and gas discharge passage (203) is communicated with the space where the motor is located.

3. The integrated gearbox according to claim 2, wherein, The housing (1) is further formed with a third oil supply interface (107) and a fourth oil supply interface (108). Both the third oil supply interface (107) and the fourth oil supply interface (108) are formed between the second accessory interface (105) and the second oil supply interface (106), and the fourth oil supply interface (108) is located above the left side of the third oil supply interface (107). Both the third oil supply interface (107) and the fourth oil supply interface (108) are communicated with the first oil supply passage (202), and a lubrication interface is arranged on the side of the installation cavity (101) to provide a lubrication passage for the gearbox; The oil circuit has a second oil supply passage (206), both ends of the second oil supply passage (206) are respectively communicated with the third oil supply interface (107) and the fourth oil supply interface (108), and the lubricating oil in the first oil supply passage (202) sequentially passes through the liquid separation interface (114), the second oil supply interface (106), the third oil supply interface (107), the second oil supply passage (206) and the fourth oil supply interface (108), wherein the second oil supply interface (106) is used for motor cooling and lubrication, and both the third oil supply interface (107) and the fourth oil supply interface (108) are used for lubricating and cooling the gearbox.

4. The integrated gearbox according to claim 2, wherein, further comprising: a mounting member (3), integrally cast and formed with the casing (1), the mounting member (3) has a first passage interface (301) communicated with the first oil supply interface (104), and a second passage interface (302) communicated with the first oil supply passage (202), the mounting member (3) is used for mounting a cooling member, and a fourth oil supply passage with both ends respectively communicated with the first passage interface (301) and the second passage interface (302) is provided inside the cooling member, and the lubricating oil temporarily stored in the oil storage cavity (102) sequentially passes through the oil pumping passage (201), the intermediate interface (112), the first oil supply interface (104), the first passage interface (301), the fourth oil supply passage, the second passage interface (302), the first oil supply passage (202) and then enters the liquid separation interface (114).

5. The integrated gearbox according to claim 2, wherein, the casing (1) is further formed with a fifth oil supply interface (119) and a fourth oil return interface (120), the fifth oil supply interface (119) and the fourth oil return interface (120) are formed on the outer surface of the casing (1), and the fourth oil return interface (120) is communicated with the first oil return passage (204); the oil circuit has a third oil supply passage (207), both sides of the third oil supply passage (207) are respectively communicated with the fifth oil supply interface (119) and the liquid separation interface (114), the lubricating oil in the first oil supply passage (202) enters the third oil supply passage (207) after passing through the liquid separation interface (114), then enters other components through the fifth oil supply interface (119) for lubricating and cooling them, and enters the first oil return passage (204) through the fourth oil return interface (120), and then returns to the oil storage cavity (102) through the first oil return interface (113).

6. The integrated gearbox according to claim 2, wherein, the casing (1) is further formed with an oil-gas mixture inlet (118), and the oil-gas mixture inlet (118) is arranged on one side of the first accessory interface (103); the oil-gas discharge passage (203) is communicated with the oil-gas mixture inlet (118).

7. The integrated gearbox according to any one of claims 1-6, wherein, further comprising: The drive gear shaft (4), the drive gear shaft (4) is installed in the installation cavity (101), the drive gear shaft (4) includes a gear structure (401) and a rotating shaft structure (402), the gear structure (401) is integrally connected with the rotating shaft structure (402) and forms a transition structure (403) at the connection; the drive gear shaft (4) has a first through hole (404), a gas channel (405) and a mixing channel (406), the first through hole (404) is arranged on the transition structure (403), the gas channel (405) is arranged inside the rotating shaft structure (402), and the gas channel (405) communicates with the installation cavity (101) through the first through hole (404), one side opening of the mixing channel (406) is arranged on the end face of the gear structure (401) far from the transition structure (403), the other side opening of the mixing channel (406) is connected with the gas channel (405), and the axis of the mixing channel (406) is arranged to intersect with the axis of the gas channel (405), the mixing channel (406) is used for separating the oil-gas mixture and conveying the lubricating oil after the oil-gas mixture is separated by oil-gas separation into the oil storage cavity (102).

8. The integrated gearbox according to claim 7, characterized in that, further comprising: a pressure relief member (5), installed outside the casing (1), and the pressure relief member (5) is arranged on the side of the transition structure (403) far from the gear structure (401), the pressure relief member (5) is provided with an exhaust hole (501), the axis of the exhaust hole (501) is arranged to intersect with the axis of the gas channel (405), and the exhaust hole (501) communicates with the gas channel (405) for conveying the gas after the oil-gas mixture is separated by oil-gas separation to the outside of the casing (1).

9. The integrated gearbox according to claim 8, characterized in that, the drive gear shaft (4) further includes a barring hole (407), the barring hole (407) is arranged on the side of the drive gear shaft (4) close to the pressure relief member (5) and communicates with the gas channel (405).

10. The integrated gearbox according to claim 8, characterized in that, further comprising: a plugging member (6), the plugging member (6) is detachably installed at the exhaust hole (501).

11. An aeroengine, characterized in that, comprising the integrated gearbox according to any one of claims 1-10.

Images