Transmission device

Abstract

The invention relates to the technical field of engine transmission, and provides a transmission device which comprises a casing assembly, a first transmission chain and a second transmission chain, the first transmission chain and the second transmission chain are both arranged in the casing assembly, the first transmission chain is arranged opposite to the second transmission chain, and the first transmission chain comprises a first transmission part, a transmission wheel part and a generator rotor. The first transmission chain comprises a first transmission part and a turbine rotor, one end of the first transmission part is in transmission connection with the generator rotor, the other end of the first transmission part is in transmission connection with the transmission wheel part, and the transmission wheel part is in transmission connection with a first motor in the casing assembly; and the other end is in transmission connection with a second motor in the casing assembly. Through the two transmission chains, the transmission power is improved, the high-power generation requirement of a user is met, transmission wheels in the two transmission chains all adopt cylindrical gears, the cost is low, the reliability is high, and maintenance is convenient by disassembling the casing assembly and all parts on the casing assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of engine transmission, and in particular relates to a transmission device. Background Art

[0002] During operation, existing aircraft engine accessory transmission devices use a transmission chain to start the engine and extract power from the combustion rotor through a pair of bevel gears. The power transmitted is small and the maintenance is not high. In addition, the side clearance of the bevel gear pair is sensitive to changes in the external environment. The axial and radial movement of the bevel gear mounting shaft will cause the side clearance to change. In severe cases, it will cause the gear to "get stuck", greatly reducing the life of the bevel gear. Summary of the invention

[0003] In view of the above problems, the present invention proposes a transmission device, comprising: a casing assembly, a first transmission chain and a second transmission chain, the first transmission chain and the second transmission chain are both arranged in the casing assembly, and the first transmission chain is arranged opposite to the second transmission chain, the first transmission chain comprises a first transmission part, a transfer wheel component and a generator rotor, one end of the first transmission part is transmission-connected to the generator rotor, and the other end is transmission-connected to the transfer wheel component, the transfer wheel component is transmission-connected to the first motor in the casing assembly, the second transmission chain comprises a second transmission part and a turbine rotor, one end of the second transmission part is transmission-connected to the turbine rotor, and the other end is transmission-connected to the second motor in the casing assembly.

[0004] Optionally, the first transmission part includes a driven cylindrical wheel and a driving cylindrical wheel, one end of the transmission wheel component is transmission connected to one end of the driven cylindrical wheel, and the other end is transmission connected to the first motor, the other end of the driven cylindrical wheel is transmission connected to the end of the driving cylindrical wheel, and the driving cylindrical wheel is transmission connected to the generator rotor.

[0005] Optionally, the second transmission portion includes an output shaft, an intermediate gear and a power generation gear, a portion of the output shaft is drivingly connected to the turbine rotor, another portion of the output shaft is connected to an end of the intermediate gear, the other end of the intermediate gear is drivingly connected to the power generation gear, and the power generation gear is drivingly connected to the second motor.

[0006] Optionally, the transmission wheel component includes a first connecting portion and a second connecting portion, the two ends of the first connecting portion are respectively transmission-connected to the first transmission portion and the second connecting portion, and the second connecting portion is transmission-connected to the first motor.

[0007] Optionally, the second transmission portion further includes a first bearing portion disposed in the casing assembly, and the output shaft is disposed in the first bearing portion.

[0008] Optionally, the casing assembly includes a first casing and a second casing, the first transmission chain is arranged on the first casing, and the second transmission chain is arranged on the second casing.

[0009] Optionally, the first motor is arranged on the edge of the first casing, the first motor includes an AC generator and a starter generator, the first transmission part is transmission-connected to the starter generator, and the AC generator and the starter generator are connected via a transmission gear.

[0010] Optionally, a lubricating oil pump and an electronically controlled regulator are further provided on the edge of the first casing, and the AC generator, the lubricating oil pump and the electronically controlled regulator are connected in sequence through transmission gears.

[0011] Optionally, the second motor is detachably provided on an edge of the second casing.

[0012] Optionally, a detection component is also included, and the detection component is detachably arranged at the edge of the casing assembly.

[0013] The transmission device of the present invention extracts power from the generator rotor and the turbine rotor respectively through two independent first transmission chains and second transmission chains. The first transmission chain specifically extracts power from the generator rotor through the first transmission part and the transmission wheel component therein, and the second transmission chain specifically extracts power from the turbine rotor through the second transmission part therein, thereby improving the transmission power and meeting the user's requirements for high-power power generation, etc. At the same time, the transmission wheels in the two transmission chains all use cylindrical gears, which have low cost and high reliability, and can be easily maintained by disassembling the casing assembly and the various components thereon.

[0014] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of a power extraction profile of a first transmission chain in a transmission device according to an embodiment of the present invention is shown;

[0017] Figure 2A schematic diagram of a power extraction profile of a second transmission chain in a transmission device according to an embodiment of the present invention is shown;

[0018] Figure 3 A forward schematic diagram of a transmission device according to an embodiment of the present invention is shown.

[0019] In the figure, 1, casing assembly; 11, first casing; 12, second casing; 2, first transmission chain; 21, first transmission part; 221, driven cylindrical wheel; 222, driving cylindrical wheel; 22, transmission wheel component; 23, generator rotor; 201, first connecting part; 202, second connecting part; 203, second bearing part; 3, second transmission chain; 31, second transmission part; 32, turbine rotor; 33, first bearing part; 331, output shaft; 332, intermediate gear; 333, generator gear; 4, first motor; 41, AC generator; 42, starter generator; 5, lubricating oil pump; 6, electronically controlled regulator; 7, detection component; 8, second motor; 73, oil filter assembly; 70, detection signal device; 71, combination sensor; 72, pressure sensor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1 As shown, the present invention provides a transmission device, which is installed on an aircraft engine and is used to start the engine and extract power from the gas generator rotor 23 and the power turbine rotor 32 to ensure the normal operation of the engine accessories installed thereon, including: a casing assembly 1, a first transmission chain 2 and a second transmission chain 3, the first transmission chain 2 and the second transmission chain 3 are both arranged in the casing assembly 1, and the first transmission chain 2 is located above the second transmission chain 3.

[0022] Optionally, the casing assembly 1 includes a first casing 11 and a second casing 12, wherein the first casing 11 and the second casing 12 are fixedly connected by a locating pin, and there are two locating pins, and the two locating pins are passed between the two ends of the first casing 11 and the second casing 12. It should be noted that the two ends of the first casing 11 and the second casing 12 respectively have protruding blocks, and the two locating pins respectively pass through the protruding blocks to fix the first casing 11 and the second casing 12 together, and the first transmission chain 2 is arranged on the first casing 11, and the second transmission chain 3 is arranged on the second casing 12. The first transmission chain 2 is arranged to face the second transmission chain 3. Since the first casing 11 is always located on the second casing 12 during installation and use, the first transmission chain 2 is also above the second transmission chain 3. Optionally, the first casing 11 is a front casing, and the second casing 12 is a rear casing.

[0023] Specifically, the first transmission chain 2 includes a first transmission part 21 and a transmission wheel component 22, one end of the first transmission part 21 is transmission-connected to the generator rotor 23, and the other end is transmission-connected to the transmission wheel component 22, and the transmission wheel component 22 is transmission-connected to the first motor 4 in the casing assembly 1. Figure 2 As shown, the second transmission chain 3 includes a second transmission part 31 and a turbine rotor 32, one end of the second transmission part 31 is transmission-connected to the turbine rotor 32, and the other end is transmission-connected to the second motor 8 in the casing assembly 1. Power is extracted from the generator rotor 23 through the first transmission part 21 and the transmission wheel component 22 in the first transmission chain 2, and power is extracted from the turbine rotor 32 by the second transmission part 31 in the second transmission chain 3, thereby improving the transmission power and meeting the user's requirements for high-power power generation, etc. At the same time, the transmission wheels in the two transmission chains are all cylindrical gears, which are low in cost and high in reliability, and can be easily maintained by disassembling the casing assembly 1 and various components thereon.

[0024] like Figure 1As shown, in one embodiment, the first transmission part 21 includes a driven cylindrical wheel 221 and a driving cylindrical wheel 222, one end of the transmission wheel component 22 is transmission-connected to one end of the driven cylindrical wheel 221, and the other end is transmission-connected to the first motor 4, the other end of the driven cylindrical wheel 221 is transmission-connected to the end of the driving cylindrical wheel 222, and the driving cylindrical wheel 222 is transmission-connected to the generator rotor 23. It should be noted that each transmission wheel in the driven cylindrical wheel 221, the driving cylindrical wheel 222 and the transmission wheel component 22 is a cylindrical gear. Since each cylindrical gear produced is simpler, the overall cost is reduced, and the cylindrical gear is less sensitive to changes in the external environment. During installation, the axial and radial movements of the shaft will not cause changes in the side clearance, and the gears will not get stuck, which greatly improves the life of the gears. Optionally, the driving cylindrical wheel 222 is connected to the end of the driven cylindrical wheel 221 along the axial direction of the driven cylindrical wheel 221, the driving cylindrical wheel 222 and the generator rotor 23 are perpendicular to each other, and the transmission wheel component 22 and the driven cylindrical wheel 221 are also perpendicular to each other.

[0025] In one embodiment, the transmission wheel component 22 includes a first connection portion 201 and a second connection portion 202, the two ends of the first connection portion 201 are respectively connected to the first transmission portion 21 and the second connection portion 202, and the second connection portion 202 is connected to the first motor 4. Optionally, a second bearing portion 203 is provided on the first casing 11, the first connection portion 201 is supported by the second bearing portion 203, and the driven cylindrical wheel 221 and the transmission wheel component 22 are respectively connected by the first connection portion 201, so as to realize the extraction of power from the generator rotor 23.

[0026] like Figure 2 As shown, in one embodiment, the second transmission part 31 includes an output shaft 331, an intermediate gear 332 and a power generation gear 333, a part of the output shaft 331 is connected to the turbine rotor 32, another part of the output shaft 331 is connected to the end of the intermediate gear 332, the other end of the intermediate gear 332 is connected to the power generation gear 333, and the power generation gear 333 is connected to the second motor 8. It should be noted that the intermediate gear 332 and the power generation gear 333 can also be cylindrical gears. Since each transmission part in the present invention has no central transmission shaft, the poor processability, difficult dynamic balance and poor working conditions of the traditional central transmission shaft are avoided, so that each transmission part of the present invention has higher reliability. Optionally, the second transmission part 31 also includes a first bearing part 33 arranged in the casing assembly 1, and the output shaft 331 is arranged in the first bearing part 33. Among them, the power generation gear 333 is a high-power power generation gear 333.

[0027] like Figure 3As shown, in one embodiment, the first motor 4 is arranged on the edge of the first casing 11, the first motor 4 includes an AC generator 41 and a starter generator 42, the first transmission part 21 is transmission-connected with the starter generator 42, and the AC generator 41 and the starter generator 42 are connected through a transmission gear. Power is extracted from the generator rotor 23 through the driving cylindrical gear and the driven cylindrical gear, and then the starter generator 42 and the AC generator 41 are driven through the driven cylindrical wheel 221, the driving cylindrical wheel 222 and the cylindrical gears in the transmission wheel component 22. Optionally, the AC generator 41 and the starter generator 42 can be detachably arranged on the edge of the first casing 11.

[0028] In one embodiment, a lubricating oil pump 5 and an electronically controlled regulator 6 are further provided on the edge of the first casing 11, and the AC generator 41, the lubricating oil pump 5 and the electronically controlled regulator 6 are sequentially connected through transmission gears. It should be noted that the lubricating oil pump 5 and the electronically controlled regulator 6 can be driven by the respective transmission gears, so that the lubricating oil pump 5 and the electronically controlled regulator 6 can be started and work normally.

[0029] In one embodiment, a second motor 8 is detachably provided on the edge of the second casing 12. Optionally, the second motor 8 is a high-power generator, which is detachably provided on the edge of the second casing 12, extracts power through the output shaft 331 and the turbine rotor 32 via a spline connection, and then transmits power to the high-power power generation gear 333 through the intermediate gear 332, thereby driving the high-power generator to meet the user's needs for high-power power generation or extraction of relatively large power.

[0030] In one embodiment, it also includes a detection component 7, which is detachably arranged at the edge of the casing assembly 1. It should be noted that the detection component 7 includes an oil filter assembly 73, a detection signaler 70, a combination sensor 71 and a pressure sensor 72. Optionally, the detection signaler 70 is used to detect magnetic chips, the combination sensor 71 is used to detect the size of the lubricating oil temperature and pressure, and the pressure sensor 72 can be a P3 pressure sensor 72. The temperature and pressure on each related component are detected by each detector in the detection component 7 and fed back to the terminal in time, so as to facilitate monitoring whether the operating environment of each component is normal. The magnetic chip detection signaler 70 can effectively detect and respond to tiny metal chips in the device, thereby preventing potential failures. The oil filter assembly 73 can remove impurities and contaminants in the engine oil, ensure the cleanliness of the engine oil, and thus ensure the normal operation of the engine. Specifically, the oil filter assembly 73, the magnetic chip detection signaler 70, the lubricating oil temperature and pressure combination sensor 71 and the pressure sensor 72 are all fastened in the casing assembly 1 by bolts and nuts, and have good maintainability.

[0031] In summary, the present invention can extract power from the generator rotor 23 and the turbine rotor 32 respectively through two independent transmission chains, and the power transmission is relatively high, which can meet the user's requirements for high-power power generation, etc. At the same time, all transmission chains use cylindrical gears, which have low cost and high reliability, and each rotating accessory is arranged on the circumferential edge of the casing assembly 1, which is convenient for installation and disassembly and has good maintainability.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transmission device, characterized in that: include: A casing assembly (1), a first transmission chain (2) and a second transmission chain (3), wherein the first transmission chain (2) and the second transmission chain (3) are both arranged in the casing assembly (1), and the first transmission chain (2) is arranged facing the second transmission chain (3), the first transmission chain (2) comprises a first transmission part (21), a transmission wheel component (22) and a generator rotor (23), one end of the first transmission part (21) is transmission-connected to the generator rotor (23), and the other end is transmission-connected to the transmission wheel component (22), the transmission wheel component (22) is transmission-connected to a first motor (4) in the casing assembly (1), and the second transmission chain (3) comprises a second transmission part (31) and a turbine rotor (32), one end of the second transmission part (31) is transmission-connected to the turbine rotor (32), and the other end is transmission-connected to a second motor (8) in the casing assembly (1).

2. The transmission device according to claim 1, characterized in that: The first transmission part (21) comprises a driven cylindrical wheel (221) and a driving cylindrical wheel (222); one end of the transmission wheel component (22) is drivingly connected to one end of the driven cylindrical wheel (221), and the other end is drivingly connected to the first motor (4); the other end of the driven cylindrical wheel (221) is drivingly connected to the end of the driving cylindrical wheel (222); and the driving cylindrical wheel (222) is drivingly connected to the generator rotor (23).

3. The transmission device according to claim 1, characterized in that: The second transmission part (31) includes an output shaft (331), an intermediate gear (332) and a power generation gear (333), a portion of the output shaft (331) is connected to the turbine rotor (32), another portion of the output shaft (331) is connected to the end of the intermediate gear (332), the other end of the intermediate gear (332) is connected to the power generation gear (333), and the power generation gear (333) is connected to the second motor (8).

4. The transmission device according to claim 1, characterized in that: The transmission wheel component (22) comprises a first connecting portion (201) and a second connecting portion (202); the two ends of the first connecting portion (201) are respectively connected in transmission with the first transmission portion (21) and the second connecting portion (202); and the second connecting portion (202) is connected in transmission with the first motor (4).

5. The transmission device according to claim 3, characterized in that: The second transmission part (31) further comprises a first bearing part (33) arranged in the casing assembly (1), and the output shaft (331) is arranged in the first bearing part (33).

6. The transmission device according to claim 1, characterized in that: The casing assembly (1) comprises a first casing (11) and a second casing (12); the first transmission chain (2) is arranged on the first casing (11); and the second transmission chain (3) is arranged on the second casing (12).

7. The transmission device according to claim 6, characterized in that: The first motor (4) is arranged on an edge of the first casing (11), the first motor (4) comprises an alternating current generator (41) and a starter generator (42), the first transmission part (21) is transmission-connected to the starter generator (42), and the alternating current generator (41) and the starter generator (42) are connected via a transmission gear.

8. The transmission device according to claim 7, characterized in that: A lubricating oil pump (5) and an electronically controlled regulator (6) are also provided on the edge of the first casing (11); the AC generator (41), the lubricating oil pump (5) and the electronically controlled regulator (6) are connected in sequence via transmission gears.

9. The transmission device according to claim 6, characterized in that: The second motor (8) is detachably provided on the edge of the second casing (12).

10. The transmission device according to claim 1, characterized in that: It also comprises a detection component (7), and the detection component (7) is detachably arranged at the edge of the casing assembly (1).

Images