CN114151205B - Accessory transmission device and engine with same - Google Patents
Accessory transmission device and engine with same Download PDFInfo
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- CN114151205B CN114151205B CN202111488704.4A CN202111488704A CN114151205B CN 114151205 B CN114151205 B CN 114151205B CN 202111488704 A CN202111488704 A CN 202111488704A CN 114151205 B CN114151205 B CN 114151205B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/32—Arrangement, mounting, or driving, of auxiliaries
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses an accessory transmission device and an engine with the same, comprising: the auxiliary lubricating oil pump is characterized by comprising an accessory casing, a main lubricating oil pump, a transmission box, a generator, a bearing oil pump, an auxiliary lubricating oil pump, an air separator, a power input chain, a main lubricating oil pump transmission chain, a transmission box transmission chain, a generator transmission chain, an oil pump transmission chain and a hybrid transmission chain. The transmission chain of the main lubricating oil pump and the power input chain are coaxially arranged, and two ends of the transmission chain of the main lubricating oil pump are respectively connected with the power input chain and the main lubricating oil pump. The transmission box transmission chain is vertically arranged with the power input chain, and two ends of the transmission box transmission chain are respectively connected with the power input chain and the transmission box. The generator transmission chain and the oil well pump transmission chain are respectively arranged at two sides of the transmission box transmission chain, two ends of the generator transmission chain are respectively connected with the transmission box transmission chain and the generator, and two ends of the oil well pump transmission chain are respectively connected with the transmission box transmission chain and the bearing oil well pump. The hybrid transmission chain and the oil well pump transmission chain are positioned on the same side, the middle part of the hybrid transmission chain is connected with the oil well pump transmission chain, and the two ends of the hybrid transmission chain are respectively connected with the auxiliary lubricating oil pump and the air separator.
Description
Technical Field
The invention relates to the technical field of aircraft engines, in particular to an accessory transmission device. The invention also relates to an engine comprising the accessory drive.
Background
An accessory transmission casing of a certain type of aircraft engine is an air inlet casing of the engine and is also a casing for accessory transmission and installation. In order to reduce the overall dimensions of the casing, thereby reducing the weight of the casing and meeting the transmission requirements, a transmission is required to be designed to meet the requirements of the transmission system and to achieve a compact structure.
Disclosure of Invention
The invention provides an accessory transmission device and an engine with the same, and aims to solve the technical problems that the existing accessory transmission device is dispersed and not centralized in structural arrangement and poor in transmission performance.
The technical scheme adopted by the invention is as follows:
an accessory drive comprising: the auxiliary lubricating oil pump and air separator are arranged in the accessory case, and the auxiliary lubricating oil pump is arranged in the accessory case; the main lubricating oil pump transmission chain and the power input chain are coaxially arranged, and two ends of the main lubricating oil pump transmission chain are respectively connected with the power input chain and the main lubricating oil pump; the transmission box transmission chain is vertically arranged with the power input chain, and two ends of the transmission box transmission chain are respectively connected with the power input chain and the transmission box; the generator transmission chain and the oil-well pump transmission chain are respectively arranged on two sides of the transmission box transmission chain and are both vertically arranged with the transmission box transmission chain, two ends of the concurrent motor transmission chain are respectively connected with the transmission box transmission chain and the generator, and two ends of the oil-well pump transmission chain are respectively connected with the transmission box transmission chain and the bearing oil-well pump; the hybrid transmission chain and the oil well pump transmission chain are positioned on the same side and are arranged perpendicular to the oil well pump transmission chain, the middle part of the hybrid transmission chain is connected with the oil well pump transmission chain, and the two opposite ends of the hybrid transmission chain are respectively connected with the auxiliary lubricating oil pump and the air separator.
Furthermore, the power input chain comprises a protection bearing seat fixedly arranged on the accessory casing, a supporting bearing arranged in the protection bearing seat, and a lower vertical bevel gear supported on the supporting bearing; the protective bearing seat is used for mounting the supporting bearing and effectively preventing external scraps from entering the supporting bearing; the input end of the lower vertical bevel gear is connected with an external power input source, and the opposite output ends of the lower vertical bevel gear are respectively connected with a main lubricating oil pump transmission chain and a transmission box transmission chain.
Further, the main lubricating oil pump transmission chain comprises a main lubricating oil pump transmission shaft which is coaxially arranged with the lower vertical bevel gear; the input end of the transmission shaft of the main lubricating oil pump is connected with the gear shaft of the lower vertical bevel gear, and the opposite output end of the transmission shaft of the main lubricating oil pump is coaxially connected with the gear shaft of the main lubricating oil pump.
Furthermore, the transmission box transmission chain comprises a lower horizontal gear shaft vertically arranged with the lower vertical bevel gear, a lower driven bevel gear fixedly arranged on the excircle of the lower horizontal gear shaft, and a transmission box transmission shaft coaxially connected with the lower horizontal gear shaft; the lower horizontal gear shaft is rotatably supported on the accessory casing, and the lower driven bevel gear is externally meshed with a bevel gear of the lower vertical bevel gear; the input end of the transmission shaft of the transmission box is connected with the output end of the lower horizontal gear shaft, and the outer circle of the output end which is arranged oppositely is fixedly provided with the central gear of the transmission box.
Furthermore, the accessory transmission device further comprises a plurality of groups of reinforcing connecting seats for reinforcing the transmission box, and each reinforcing connecting seat penetrates through the outer shell of the transmission box and then is fixed with the accessory casing.
Furthermore, the generator transmission chain comprises a first intermediate shaft, a second intermediate shaft and a generator gear which are sequentially arranged at intervals and are respectively parallel to the lower horizontal gear shaft, a first intermediate gear which is rotatably arranged on the excircle of the first intermediate shaft, a second intermediate gear which is rotatably arranged on the excircle of the second intermediate shaft and an adapter which is fixed with the accessory case; the first intermediate shaft and the second intermediate shaft are respectively fixedly supported on the accessory casing, the first intermediate gear is externally meshed with the upper gear at the output end of the lower horizontal gear shaft, and the second intermediate gear is externally meshed with the first intermediate gear; two ends of a gear shaft of the generator gear are rotatably supported on the accessory casing and the adapter respectively, the generator gear is externally meshed with the second intermediate gear, and an extension shaft of the generator gear is coaxially connected with the gear shaft of the generator gear.
Furthermore, an inwards concave polygonal hole is formed in the end part of the second intermediate shaft; the generator transmission chain further comprises a fixing seat fixed with the accessory casing, and the fixing seat penetrates through the accessory casing and then extends into a polygonal hole of the second intermediate shaft correspondingly arranged.
Furthermore, the oil well pump transmission chain comprises a third intermediate shaft and an oil well pump transmission shaft which are sequentially arranged at intervals and are respectively parallel to the lower horizontal gear shaft, a third intermediate gear rotationally arranged on the excircle of the third intermediate shaft, and an oil well pump gear fixedly arranged on the excircle of the oil well pump transmission shaft; the third intermediate shaft is fixedly supported on the accessory casing, and a third intermediate gear is externally meshed with an upper gear at the output end of the lower horizontal gear shaft; the input end of the oil pump transmission shaft is fixed with a gear shaft of the shaft oil pump gear, the opposite output end of the oil pump transmission shaft is coaxially connected with an oil pump driving gear of the bearing oil pump, and the oil pump gear is externally meshed with a third intermediate gear.
Furthermore, the hybrid transmission chain comprises a fourth intermediate shaft and an auxiliary lubricating oil pump transmission shaft which are sequentially arranged at intervals and are respectively parallel to the oil well pump transmission shaft, a fourth intermediate gear rotatably arranged on the excircle of the fourth intermediate shaft, a separator transmission shaft fixedly arranged on the excircle of the auxiliary lubricating oil pump transmission shaft, and an auxiliary lubricating oil pump gear fixedly arranged on the excircle of the separator transmission shaft; the fourth intermediate shaft is fixedly supported on the accessory casing, and a fourth intermediate gear is externally meshed with the gear of the oil well pump; the auxiliary lubricating oil pump and the air separator are arranged oppositely, the auxiliary lubricating oil pump gear is externally meshed with the fourth intermediate gear, the input end of the separator transmission shaft is connected with the auxiliary lubricating oil pump gear, the opposite output end of the separator transmission shaft is connected with the air separator, the input end of the auxiliary lubricating oil pump transmission shaft is connected with the input end of the separator transmission shaft, and the opposite output end of the auxiliary lubricating oil pump transmission shaft is connected with the auxiliary lubricating oil pump.
According to another aspect of the invention, there is also provided an engine including an accessory drive as claimed in any one of the preceding claims.
The invention has the following beneficial effects:
in the accessory transmission device, the actions of accessories such as the main lubricating oil pump, the transmission box, the generator, the bearing oil pump, the auxiliary lubricating oil pump, the air separator and the like in the accessory case are realized through the transmission chains such as the main lubricating oil pump transmission chain, the transmission box transmission chain, the generator transmission chain, the oil pump transmission chain and the mixed transmission chain, so that the normal work of the interior of the accessory case and the accessory transmission system can be solved, meanwhile, the compact installation of the accessories on the accessory case can be met, the transmission work reliability of the accessory case is ensured, and the work reliability of an engine is further improved; in the accessory transmission device, a main lubricating oil pump transmission chain and a power input chain are coaxially arranged, a transmission box transmission chain and the power input chain are vertically arranged, a generator transmission chain and an oil-well pump transmission chain are respectively arranged on two sides of the transmission box transmission chain and are both vertically arranged with the transmission box transmission chain, a mixed transmission chain and the oil-well pump transmission chain are positioned on the same side and are vertically arranged with the oil-well pump transmission chain, the middle part of the mixed transmission chain is connected with the oil-well pump transmission chain, and the opposite two ends of the mixed transmission chain are respectively connected with an auxiliary lubricating oil pump and an air separator;
in the engine, the action of each accessory is realized through the chain transmission chain, so that the normal work of the interior of the accessory case and the accessory transmission system can be solved, the compact installation of each accessory on the accessory case can be met, the transmission reliability of the accessory case is ensured, and the working reliability of the engine is further improved; in the engine, the main lubricating oil pump transmission chain and the power input chain are coaxially arranged, the transmission box transmission chain and the power input chain are vertically arranged, the generator transmission chain and the oil well pump transmission chain are respectively arranged at two sides of the transmission box transmission chain and are both vertically arranged with the transmission box transmission chain, the mixed transmission chain and the oil well pump transmission chain are positioned at the same side and are vertically arranged with the oil well pump transmission chain, the middle part of the mixed transmission chain is connected with the oil well pump transmission chain, and the opposite two ends of the mixed transmission chain are respectively connected with the auxiliary lubricating oil pump and the air separator.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a first cross-sectional structural schematic view of an accessory drive of the preferred embodiment of the present invention;
FIG. 2 is a second cross-sectional structural schematic view of the accessory drive of the preferred embodiment of the present invention.
Description of the drawings
11. An accessory case; 12. a main lube pump; 121. a main lubricating oil pump gear shaft; 13. a transmission box; 131. a transmission box central gear; 15. a bearing oil well pump; 151. a driving gear of the oil well pump; 16. an auxiliary lubricating oil pump; 17. an air separator; 18. reinforcing the connecting seat; 30. a power input chain; 31. a protective bearing seat; 32. a lower vertical bevel gear; 40. a main lubricating oil pump transmission chain; 41. a main lubricating oil pump transmission shaft; 50. a transmission box transmission chain; 51. a lower horizontal gear shaft; 52. a lower driven bevel gear; 53. a transmission box transmission shaft; 60. a generator drive chain; 61. a first intermediate shaft; 62. a second intermediate shaft; 63. a generator gear; 64. a first intermediate gear; 65. a second intermediate gear; 66. a transfer seat; 67. a fixed seat; 68. a sealing structure; 69. a generator quick-release ring; 70. the transmission chain of the oil well pump; 71. a third intermediate shaft; 72. a transmission shaft of the oil well pump; 73. a third idler gear; 74. a gear of the oil well pump; 80. a hybrid drive chain; 81. a fourth intermediate shaft; 82. auxiliary lubricating oil pump transmission shaft; 83. a fourth intermediate gear; 84. a separator drive shaft; 85. auxiliary lubricating oil pump gear.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be practiced in many different ways, which are defined and covered by the following.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides an accessory drive comprising: the auxiliary lubricating oil pump comprises an accessory case 11, a main lubricating oil pump 12, a transmission box 13, a generator, a bearing oil pump 15, an auxiliary lubricating oil pump 16, an air separator 17, a power input chain 30 for introducing power, a main lubricating oil pump transmission chain 40 for transmitting the power to the main lubricating oil pump 12, a transmission box transmission chain 50 for transmitting the power to the transmission box 13, a generator transmission chain 60 for transmitting the power to the generator, an oil pump transmission chain 70 for transmitting the power to the bearing oil pump 15, and a hybrid transmission chain 80 for respectively transmitting the power to the auxiliary lubricating oil pump 16 and the air separator 17, wherein the main lubricating oil pump 12, the transmission box 13, the generator, the oil pump transmission chain and the air separator 17 are arranged in the accessory case 11. The main lubricating oil pump transmission chain 40 is coaxially arranged with the power input chain 30, and both ends of the main lubricating oil pump transmission chain 40 are respectively connected with the power input chain 30 and the main lubricating oil pump 12. The transmission box transmission chain 50 is vertically arranged with the power input chain 30, and two ends of the transmission box transmission chain 50 are respectively connected with the power input chain 30 and the transmission box 13. The generator transmission chain 60 and the oil-well pump transmission chain 70 are respectively arranged on two sides of the transmission box transmission chain 50 and are both vertically arranged with the transmission box transmission chain 50, two ends of the concurrent motor transmission chain 60 are respectively connected with the transmission box transmission chain 50 and the generator, and two ends of the oil-well pump transmission chain 70 are respectively connected with the transmission box transmission chain 50 and the bearing oil-well pump 15. The hybrid transmission chain 80 and the oil well pump transmission chain 70 are positioned on the same side and are arranged perpendicular to the oil well pump transmission chain 70, the middle part of the hybrid transmission chain 80 is connected with the oil well pump transmission chain 70, and the two opposite ends of the hybrid transmission chain are respectively connected with the auxiliary lubricating oil pump 16 and the air separator 17.
When the accessory transmission device works, power is firstly transmitted into the power input chain 30, then the power is respectively transmitted into the main lubricating oil pump transmission chain 40 and the transmission box transmission chain 50 through the output end of the power input chain 30, the main lubricating oil pump 12 is driven to work through the power transmitted by the main lubricating oil pump transmission chain 40, and the transmission box 13 is driven to work through the power transmitted by the transmission box transmission chain 50; the power transmitted by the transmission box transmission chain 50 respectively enters the generator transmission chain 60 and the oil pump transmission chain 70, the power transmitted by the generator transmission chain 60 drives the generator to work, and the power transmitted by the oil pump transmission chain 70 drives the bearing oil pump 15 to work; the power transmitted by the oil pump transmission chain 70 is transmitted into the hybrid transmission chain 80 to drive the auxiliary lubricating oil pump 16 and the air separator 17 to work respectively, so that 6 accessories such as the main lubricating oil pump 12, the transmission box 13, the generator, the bearing oil pump 15, the auxiliary lubricating oil pump 16 and the air separator 17 in the accessory casing 11 can be operated.
In the accessory transmission device, the actions of 6 accessories such as a main lubricating oil pump 12, a transmission box 13, a generator, a bearing oil pump 15, an auxiliary lubricating oil pump 16, an air separator 17 and the like in an accessory case 11 are realized through 5 transmission chains such as a main lubricating oil pump transmission chain 40, a transmission box transmission chain 50, a generator transmission chain 60, an oil pump transmission chain 70, a hybrid transmission chain 80 and the like, so that the normal work of the interior of the accessory case and an accessory transmission system can be solved, meanwhile, the requirement that 6 accessories are compactly arranged on the accessory case 11 can be met, the transmission work reliability of the accessory case 11 is ensured, and the work reliability of an engine is further improved; in the accessory transmission device, a main lubricating oil pump transmission chain 40 and a power input chain 30 are coaxially arranged, a transmission box transmission chain 50 and the power input chain 30 are vertically arranged, a generator transmission chain 60 and an oil-well pump transmission chain 70 are respectively arranged on two sides of the transmission box transmission chain 50 and are both vertically arranged with the transmission box transmission chain 50, a mixed transmission chain 80 and the oil-well pump transmission chain 70 are positioned on the same side and are vertically arranged with the oil-well pump transmission chain 70, the middle part of the mixed transmission chain 80 is connected with the oil-well pump transmission chain 70, and the opposite two ends are respectively connected with an auxiliary lubricating oil pump 16 and an air separator 17.
Alternatively, as shown in fig. 1, the power input chain 30 includes a protection bearing seat 31 fixedly installed on the accessory case 11, a support bearing installed in the protection bearing seat 31, and a lower vertical bevel gear 32 supported on the support bearing. The shield bearing housing 31 is used to mount the support bearing and effectively prevent foreign debris from entering the support bearing. The lower vertical bevel gear 32 has its input end connected to an external power input source and its opposite output end connected to the main lube pump drive train 40 and the transmission case drive train 50, respectively. When the power input chain 30 works, external power is transmitted to the lower vertical bevel gear 32 and drives the lower vertical bevel gear to rotate, and the power on the lower vertical bevel gear 32 is transmitted to the main lubricating oil pump transmission chain 40 and the transmission box transmission chain 50 respectively. In the alternative, the protective bearing seat 31 is in a conical cylinder shape, is covered outside the support bearing and is mainly used for preventing metal chips from falling into the support bearing; the lower vertical bevel gear 32 is a zero-degree circular bevel gear.
Alternatively, as shown in fig. 1, the main lube pump drive train 40 includes a main lube pump drive shaft 41 disposed coaxially with the lower vertical bevel gear 32. The input end of the main lubricating oil pump transmission shaft 41 is connected to the gear shaft of the lower vertical bevel gear 32, and the opposite output end thereof is coaxially connected to the main lubricating oil pump gear shaft 121 of the main lubricating oil pump 12. When the main lubricating oil pump transmission chain 40 works, the power of the lower vertical bevel gear 32 is transmitted to the main lubricating oil pump transmission shaft 41 to drive the main lubricating oil pump transmission shaft 41 to synchronously rotate, and the main lubricating oil pump transmission shaft 41 transmits the power to the main lubricating oil pump gear shaft 121 to drive the main lubricating oil pump gear shaft 121 to synchronously rotate so as to drive the main lubricating oil pump 12 to work. In this alternative, the upper end of the main lubricating oil pump transmission shaft 41 is engaged with the internal spline of the lower vertical bevel gear 32 through the external spline, and the lower end drives the main lubricating oil pump gear shaft 121 through the external spline; the main lubricating oil pump 12 is mainly used for conveying lubricating oil passing through the main lubricating oil pump to an engine for lubricating and cooling parts, and pumping back the used lubricating oil for recycling; the main lube pump gear shaft 121 is driven by the main lube pump transmission shaft 41 via an internal spline to drive the parts of the main lube pump 12.
Alternatively, as shown in fig. 1, the gear box transmission chain 50 includes a lower horizontal gear shaft 51 vertically arranged with the lower vertical bevel gear 32, a lower driven bevel gear 52 fixedly installed on an outer circumference of the lower horizontal gear shaft 51, and a gear box transmission shaft 53 coaxially connected with the lower horizontal gear shaft 51. The lower horizontal gear shaft 51 is rotatably supported on the accessory case 11, and the lower driven bevel gear 52 is externally engaged with the bevel gear of the lower vertical bevel gear 32. The input end of the transmission box transmission shaft 53 is connected with the output end of the lower horizontal gear shaft 51, and the transmission box central gear 131 of the transmission box 13 is fixedly arranged on the outer circle of the output end opposite to the input end. When the transmission box transmission chain 50 works, the power of the lower vertical bevel gear 32 is transmitted to the lower driven bevel gear 52 firstly, then transmitted to the lower horizontal gear shaft 51 to drive the lower driven bevel gear 52 and the lower horizontal gear shaft 51 to rotate synchronously, the power on the lower horizontal gear shaft 51 is transmitted to the transmission box transmission shaft 53 and finally transmitted to the transmission box central gear 131 to drive the transmission box transmission shaft 53 and the transmission box central gear 131 to rotate synchronously, and further drive the transmission box 13 to work. In the alternative, the lower driven bevel gear 52 is a zero-degree arc bevel gear, is driven by the lower vertical bevel gear 32 through gear engagement, and drives the lower horizontal gear shaft 51 through an internal spline; the front end and the rear end of the lower horizontal gear shaft 51 are respectively and rotatably supported on ball bearings, and the central gear 131 of the transmission box is driven by an external spline on the shaft; the transmission box 13 is installed on the accessory casing 11 through a stud; the transmission box transmission shaft 53 is driven by the lower horizontal gear shaft 51 through an internal spline; the transmission box central gear 131 is driven by the transmission box transmission shaft 53 through an internal spline and is supported on the transmission box 13 by a ball bearing.
Preferably, as shown in fig. 1 and 2, the accessory transmission device further includes a plurality of groups of reinforcing connection seats 18 for reinforcing the transmission box 13, and each reinforcing connection seat 18 is fixed to the accessory case 11 after penetrating through the outer shell of the transmission box 13, so that the transmission box 13 and the accessory case 11 are reliably fixed and are not easy to loosen.
Alternatively, as shown in fig. 2, the generator transmission chain 60 includes a first intermediate shaft 61, a second intermediate shaft 62 and a generator gear 63, which are sequentially disposed at intervals and are parallel to the lower horizontal gear shaft 51, and a first intermediate gear 64 rotatably mounted on the outer circle of the first intermediate shaft 61, a second intermediate gear 65 rotatably mounted on the outer circle of the second intermediate shaft 62, and an adapter 66 fixed to the accessory case 11. The first intermediate shaft 61 and the second intermediate shaft 62 are fixedly supported on the accessory case 11, respectively, and the first intermediate gear 64 is externally engaged with the upper gear at the output end of the lower horizontal gear shaft 51, and the second intermediate gear 65 is externally engaged with the first intermediate gear 64. Both ends of the gear shaft of the generator gear 63 are rotatably supported on the accessory case 11 and the adapter 66, respectively, and the generator gear 63 is externally engaged with the second intermediate gear 65, and the extension shaft of the generator is coaxially connected with the gear shaft of the generator gear 63.
When the power transmission device works, the power on the lower horizontal gear shaft 51 is firstly transmitted to the first intermediate gear 64, then transmitted to the second intermediate gear 65, then transmitted to the generator gear 63, and finally transmitted to the extension shaft of the generator, so as to drive the belt motor 14 to work. In this alternative, as shown in fig. 2, the upper end of the generator gear 63 is supported on the accessory case 11 through a bearing, the lower end is supported on the adapter 66 through a bearing, and the internal spline of the lower end is connected with the extending shaft of the alternator to drive the alternator; the adapter 66 is mounted on the accessory case 11 through a stud, and the inside of the adapter is sealed through a sealing structure 68 formed by sealing the labyrinth and the leather cup, so that lubricating oil is prevented from entering the alternator. Further, as shown in fig. 2, the generator transmission chain 60 further includes a generator quick-release ring 69 mounted on the adapter 66 for quick-release of the transmission and the generator.
Preferably, as shown in fig. 2, the end of the second intermediary shaft 62 is provided with a concave polygonal hole. The generator transmission chain 60 further includes a fixing seat 67 fixed to the accessory case 11, and the fixing seat 67 penetrates through the accessory case 11 and then extends into a polygonal hole of the second intermediate shaft 62, so as to effectively prevent the second intermediate shaft 62 from rotating.
Optionally, as shown in fig. 2, the pump transmission chain 70 includes a third intermediate shaft 71 and a pump transmission shaft 72 that are sequentially disposed at intervals and are parallel to the lower horizontal gear shaft 51, a third intermediate gear 73 rotatably mounted on an outer circumference of the third intermediate shaft 71, and a pump gear 74 fixedly mounted on an outer circumference of the pump transmission shaft 72. The third intermediate shaft 71 is fixedly supported on the accessory case 11, and the third intermediate gear 73 is externally engaged with the upper gear at the output end of the lower horizontal gear shaft 51. The input end of the oil pump transmission shaft 72 is fixed with a gear shaft of the shaft oil pump gear, the opposite output end is coaxially connected with an oil pump driving gear 151 of the bearing oil pump 15, and the oil pump gear 74 is externally meshed with a third intermediate gear 73. When the power transmission device works, the power on the lower horizontal gear shaft 51 is firstly transmitted to the third intermediate gear 73, then transmitted to the oil well pump gear 74, then transmitted to the oil well pump transmission shaft 72 and finally transmitted to the oil well pump driving gear 151 to drive the bearing oil well pump 15 to work. In the alternative, the bearing oil pump 15 is fixed on the accessory casing 11 through a bearing oil pump mounting seat and a stud, and is used for pumping the lubricating oil in the middle and rear bearings; the oil well pump gear 74 is driven by the third intermediate gear 73 through gear engagement, and the upper end of the oil well pump gear is connected with the oil well pump transmission shaft 72 through an internal spline; the oil pump driving gear 151 is connected with the inner spline of the oil pump transmission shaft 72 through an upper end external spline so as to drive parts in the bearing oil pump 15 to work.
Optionally, as shown in fig. 2, the hybrid transmission chain 80 includes a fourth intermediate shaft 81 and an auxiliary lubricating oil pump transmission shaft 82 which are sequentially disposed at intervals and are respectively parallel to the oil well pump transmission shaft 72, a fourth intermediate gear 83 rotatably mounted on an outer circle of the fourth intermediate shaft 81, a separator transmission shaft 84 fixedly mounted on an outer circle of the auxiliary lubricating oil pump transmission shaft 82, and an auxiliary lubricating oil pump gear 85 fixedly mounted on an outer circle of the separator transmission shaft 84. The fourth intermediate shaft 81 is fixedly supported on the accessory case 11, and the fourth intermediate gear 83 is externally engaged with the pump gear 74. The auxiliary lubricating oil pump 16 and the air separator 17 are oppositely arranged, an auxiliary lubricating oil pump gear 85 is externally meshed with the fourth intermediate gear 83, the input end of a separator transmission shaft 84 is connected with the auxiliary lubricating oil pump gear 85, the opposite output end of the separator transmission shaft is connected with the air separator 17, the input end of an auxiliary lubricating oil pump transmission shaft 82 is connected with the input end of the separator transmission shaft 84, and the opposite output end of the auxiliary lubricating oil pump transmission shaft is connected with the auxiliary lubricating oil pump 16.
When the hybrid transmission chain 80 works, the power on the oil well pump gear 74 is firstly transmitted to the fourth intermediate gear 83, then transmitted to the auxiliary lubricating oil pump gear 85, then transmitted to the separator transmission shaft 84, and finally transmitted to the auxiliary lubricating oil pump transmission shaft 82, the air separator 17 is driven to work through the separator transmission shaft 84, and the auxiliary lubricating oil pump 16 is driven to work through the auxiliary lubricating oil pump transmission shaft 82. In the alternative, the auxiliary lubricating oil pump 16 is arranged on the casing 11 through the auxiliary lubricating oil pump mounting seat and the stud mounting seat, when the engine is started, oil is filled into the lubricating oil pipeline, and when the engine works normally, consumed lubricating oil is supplemented to the lubricating oil system; the air separator 17 is mounted on the accessory casing 11 through a stud and is used for separating air in the lubricating oil pumped back by the main lubricating oil pump 12 and the bearing oil pump 15; the auxiliary lubricating oil pump gear 85 is supported on the accessory case 11 through a bearing, is driven by the fourth intermediate gear 83, and drives the auxiliary lubricating oil pump transmission shaft 82 and the separator transmission shaft 84 for transmission.
Preferably, as shown in fig. 2, the axes of the lower horizontal gear shaft 51, the first intermediate shaft 61, the second intermediate shaft 62, the gear shaft of the generator gear 63, the third intermediate shaft 71, the oil pump transmission shaft 72, the fourth intermediate shaft 81 and the auxiliary lubricating oil pump transmission shaft 82 are located on the same plane, and this layout mode makes the overall structure more compact, has stronger symmetry, and is more favorable for the stability of the overall structure.
Referring to FIG. 1, a preferred embodiment of the present invention also provides an engine including an accessory drive as in any one of the above. In the engine, the actions of 6 accessories are realized through 5 transmission chains, so that the normal work of the inside of an accessory case and an accessory transmission system can be solved, the 6 accessories can be compactly arranged on the accessory case 11, the reliability of the transmission work of the accessory case 11 is ensured, and the working reliability of the engine is further improved; in the engine, a main lubricating oil pump transmission chain 40 and a power input chain 30 are coaxially arranged, a transmission box transmission chain 50 and the power input chain 30 are vertically arranged, a generator transmission chain 60 and an oil-well pump transmission chain 70 are respectively arranged at two sides of the transmission box transmission chain 50 and are both vertically arranged with the transmission box transmission chain 50, a mixed transmission chain 80 and the oil-well pump transmission chain 70 are positioned at the same side and are vertically arranged with the oil-well pump transmission chain 70, the middle part of the mixed transmission chain 80 is connected with the oil-well pump transmission chain 70, and the opposite two ends are respectively connected with an auxiliary lubricating oil pump 16 and an air separator 17, so that the smooth transmission of power is realized, the overall structure layout is compact and reasonable, the occupied space is small, and the requirements of an aircraft engine accessory transmission system are met.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An accessory drive, comprising:
the auxiliary oil pump comprises an accessory case (11), a main lubricating oil pump (12), a transmission box (13), a generator, a bearing oil pump (15), an auxiliary lubricating oil pump (16), an air separator (17), a power input chain (30) for introducing power, a main lubricating oil pump transmission chain (40) for transmitting the power to the main lubricating oil pump (12), a transmission box transmission chain (50) for transmitting the power to the transmission box (13), a generator transmission chain (60) for transmitting the power to the generator, an oil pump transmission chain (70) for transmitting the power to the bearing oil pump (15), and a hybrid transmission chain (80) for respectively transmitting the power to the auxiliary lubricating oil pump (16) and the air separator (17), wherein the main lubricating oil pump (12), the transmission box (13), the bearing oil pump (15), the auxiliary lubricating oil pump (16) and the air separator (17) are arranged in the accessory case (11);
the main lubricating oil pump transmission chain (40) and the power input chain (30) are coaxially arranged, and two ends of the main lubricating oil pump transmission chain (40) are respectively connected with the power input chain (30) and the main lubricating oil pump (12); the transmission box transmission chain (50) is vertically arranged with the power input chain (30), and two ends of the transmission box transmission chain (50) are respectively connected with the power input chain (30) and the transmission box (13);
the generator transmission chain (60) and the oil-well pump transmission chain (70) are respectively arranged on two sides of the transmission box transmission chain (50) and are both vertically arranged with the transmission box transmission chain (50), two ends of the generator transmission chain (60) are respectively connected with the transmission box transmission chain (50) and the generator, and two ends of the oil-well pump transmission chain (70) are respectively connected with the transmission box transmission chain (50) and the bearing oil-well pump (15);
the hybrid transmission chain (80) and the oil well pump transmission chain (70) are positioned on the same side and are perpendicular to the oil well pump transmission chain (70) and distributed, the middle of the hybrid transmission chain (80) is connected with the oil well pump transmission chain (70), and the two opposite ends of the hybrid transmission chain are respectively connected with the auxiliary lubricating oil pump (16) and the air separator (17).
2. The accessory drive of claim 1,
the power input chain (30) comprises a protective bearing seat (31) fixedly arranged on the accessory casing (11), a supporting bearing arranged in the protective bearing seat (31), and a lower vertical bevel gear (32) supported on the supporting bearing;
the protective bearing seat (31) is used for mounting the supporting bearing and effectively preventing external scraps from entering the supporting bearing;
the input end of the lower vertical bevel gear (32) is connected with an external power input source, and the opposite output ends of the lower vertical bevel gear are respectively connected with the main lubricating oil pump transmission chain (40) and the transmission box transmission chain (50).
3. The accessory drive of claim 2,
the main lubricating oil pump transmission chain (40) comprises a main lubricating oil pump transmission shaft (41) which is coaxial with the lower vertical bevel gear (32);
the input end of the main lubricating oil pump transmission shaft (41) is connected with the gear shaft of the lower vertical bevel gear (32), and the opposite output end of the main lubricating oil pump transmission shaft is coaxially connected with the main lubricating oil pump gear shaft (121) of the main lubricating oil pump (12).
4. The accessory drive of claim 2,
the transmission box transmission chain (50) comprises a lower horizontal gear shaft (51) vertically arranged with the lower vertical bevel gear (32), a lower driven bevel gear (52) fixedly arranged on the excircle of the lower horizontal gear shaft (51), and a transmission box transmission shaft (53) coaxially connected with the lower horizontal gear shaft (51);
the lower horizontal gear shaft (51) is rotatably supported on the accessory casing (11), and the lower driven bevel gear (52) is externally meshed with a bevel gear of the lower vertical bevel gear (32);
the input end of the transmission box transmission shaft (53) is connected with the output end of the lower horizontal gear shaft (51), and the transmission box central gear (131) of the transmission box (13) is fixedly arranged on the excircle of the output end opposite to the input end.
5. The accessory drive of claim 4,
the accessory transmission device further comprises a plurality of groups of reinforcing connecting seats (18) used for reinforcing the transmission box (13), and each reinforcing connecting seat (18) penetrates through the outer shell of the transmission box (13) and then is fixed with the accessory casing (11).
6. The accessory drive of claim 4,
the generator transmission chain (60) comprises a first intermediate shaft (61), a second intermediate shaft (62) and a generator gear (63) which are sequentially arranged at intervals and are respectively parallel to the lower horizontal gear shaft (51), a first intermediate gear (64) rotatably arranged on the excircle of the first intermediate shaft (61), a second intermediate gear (65) rotatably arranged on the excircle of the second intermediate shaft (62), and an adapter (66) fixed with the accessory casing (11);
the first intermediate shaft (61) and the second intermediate shaft (62) are respectively fixedly supported on the accessory case (11), the first intermediate gear (64) is externally meshed with the upper gear at the output end of the lower horizontal gear shaft (51), and the second intermediate gear (65) is externally meshed with the first intermediate gear (64);
two ends of a gear shaft of the generator gear (63) are rotatably supported on the accessory casing (11) and the adapter (66) respectively, the generator gear (63) is externally meshed with the second intermediate gear (65), and an extension shaft of the generator is coaxially connected with the gear shaft of the generator gear (63).
7. The accessory drive of claim 6,
an inwards concave polygonal hole is formed in the end part of the second intermediate shaft (62);
generator driving chain (60) still include with fixed fixing base (67) of annex machine casket (11), fixing base (67) wear to establish stretch into behind annex machine casket (11) and correspond the setting the second intermediary axle (62) the polygon is downthehole.
8. The accessory drive of claim 6,
the oil well pump transmission chain (70) comprises a third intermediate shaft (71) and an oil well pump transmission shaft (72) which are sequentially arranged at intervals and are respectively parallel to the lower horizontal gear shaft (51), a third intermediate gear (73) rotatably arranged on the excircle of the third intermediate shaft (71), and an oil well pump gear (74) fixedly arranged on the excircle of the oil well pump transmission shaft (72);
the third intermediate shaft (71) is fixedly supported on the accessory case (11), and the third intermediate gear (73) is externally meshed with the upper gear at the output end of the lower horizontal gear shaft (51);
the input end of the oil well pump transmission shaft (72) is fixed with a gear shaft of the oil well pump gear (74), the opposite output end of the oil well pump transmission shaft is coaxially connected with an oil well pump driving gear (151) of the bearing oil well pump (15), and the oil well pump gear (74) is externally meshed with the third intermediate gear (73).
9. The accessory drive of claim 8,
the hybrid transmission chain (80) comprises a fourth intermediate shaft (81) and an auxiliary lubricating oil pump transmission shaft (82) which are sequentially arranged at intervals and are respectively parallel to the oil well pump transmission shaft (72), a fourth intermediate gear (83) rotatably arranged on the excircle of the fourth intermediate shaft (81), a separator transmission shaft (84) fixedly arranged on the excircle of the auxiliary lubricating oil pump transmission shaft (82), and an auxiliary lubricating oil pump gear (85) fixedly arranged on the excircle of the separator transmission shaft (84);
the fourth intermediate shaft (81) is fixedly supported on the accessory casing (11), and the fourth intermediate gear (83) is externally meshed with the oil well pump gear (74);
the auxiliary lubricating oil pump (16) is arranged opposite to the air separator (17), a gear (85) of the auxiliary lubricating oil pump is meshed with the outer of the fourth intermediate gear (83), the input end of the separator transmission shaft (84) is connected with the gear (85) of the auxiliary lubricating oil pump, the opposite output end of the separator transmission shaft is connected with the air separator (17), the input end of the auxiliary lubricating oil pump transmission shaft (82) is connected with the input end of the separator transmission shaft (84), and the opposite output end of the auxiliary lubricating oil pump is connected with the auxiliary lubricating oil pump (16).
10. An engine comprising an accessory drive as claimed in any one of claims 1 to 9.
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| CN202111488704.4A CN114151205B (en) | 2021-12-08 | 2021-12-08 | Accessory transmission device and engine with same |
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| CN202111488704.4A CN114151205B (en) | 2021-12-08 | 2021-12-08 | Accessory transmission device and engine with same |
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