Gearbox for gas turbine generator set and gas turbine generator assembly

Abstract

The utility model provides a gear box for a gas turbine generator set and a gas turbine generator assembly, and relates to the field of gear boxes. The gearbox for the gas turbine generator set comprises a box body, a main transmission mechanism and an auxiliary transmission mechanism. The main transmission mechanism comprises an input shaft, a transmission shaft and an output shaft which are rotatably matched with the box body, the input shaft, the output shaft and the transmission shaft are arranged in parallel at intervals, the input shaft is in transmission fit with the transmission shaft, the transmission shaft is in transmission fit with the output shaft, and the output shaft is used for outputting torque. The auxiliary transmission mechanism comprises an auxiliary transmission motor, an auxiliary transmission assembly and a clutch, the auxiliary transmission motor is installed on the box body and connected with the auxiliary transmission assembly, the auxiliary transmission assembly is in transmission fit with the transmission shaft through the clutch, and the direction in which the auxiliary transmission assembly drives the transmission shaft to rotate is the same as the direction in which the input shaft drives the transmission shaft to rotate. The gearbox is compact in structure, small in size, small in occupied space and convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the field of gearboxes, and more specifically, to a gearbox for a gas turbine generator set and a gas turbine generator assembly. Background Art

[0002] At present, in order to achieve the functions of static starting and low-speed barring of a gas turbine generator set, a corresponding barring device generally needs to be set. Since the gas turbine has no power during the starting process, auxiliary power must be used to help the gas turbine operate, so as to realize processes such as high-speed rotation for air compression, ignition, and speed increase, and finally complete the starting of the gas turbine. In the prior art, the power and speed requirements for the auxiliary power for starting, low-speed barring, and high-speed rotation for air compression are different. The barring device and the auxiliary power device are respectively connected to the main transmission gearbox, resulting in problems such as a relatively scattered layout form, complex structure, single function, and low integration degree in the layout of the generator set.

[0003] It is found by the inventor that the gas turbine generator components in the prior art have at least the following disadvantages:

[0004] The components are scattered, the integration degree is low, the volume is large, and the occupied space is large. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a gearbox for a gas turbine generator set and a gas turbine generator assembly, which can improve the structural compactness, reduce the overall volume, reduce the occupied space, and facilitate assembly.

[0006] The embodiments of the utility model are implemented as follows:

[0007] In a first aspect, the utility model provides a gearbox for a gas turbine generator set, including:

[0008] A box body, a main transmission mechanism, and an auxiliary transmission mechanism; the main transmission mechanism includes an input shaft, a transmission shaft, and an output shaft that are all rotatably fitted with the box body. The input shaft, the output shaft, and the transmission shaft are arranged in parallel at intervals. The input shaft is in transmission cooperation with the transmission shaft, the transmission shaft is in transmission cooperation with the output shaft, and the output shaft is used for outputting torque; the auxiliary transmission mechanism includes an auxiliary transmission motor, an auxiliary transmission assembly, and a clutch. The auxiliary transmission motor is installed on the box body, the auxiliary transmission motor is connected to the auxiliary transmission assembly, the auxiliary transmission assembly is in transmission cooperation with the transmission shaft through the clutch, and the direction in which the auxiliary transmission assembly drives the transmission shaft to rotate is the same as the direction in which the input shaft drives the transmission shaft to rotate.

[0009] In an optional embodiment, the input shaft and the auxiliary transmission motor are respectively arranged on adjacent sides of the box body.

[0010] Based on the above solution, the side where the input shaft is located needs to be connected to the output part of the gas turbine body, and generally, spline insertion and cooperation are adopted. At this time, in the axial direction of the input shaft, the structural size formed by the cooperation of the box body and the gas turbine body is relatively large. Due to the volume limitation of the gas turbine body, it is impossible to directly set the auxiliary transmission motor on one side of the gas turbine body. If the auxiliary transmission motor is set on the other side of the box body corresponding to the input shaft, it will further increase the size of the entire unit in the axial direction of the input shaft. Therefore, in this embodiment, the auxiliary transmission motor and the input shaft are arranged on adjacent sides of the box body, which is not likely to cause the size of the entire unit in the axial direction of the input shaft to be too large.

[0011] In an alternative embodiment, the box body includes a first box wall, a second box wall, and a box peripheral wall. The first box wall and the second box wall are arranged at intervals relative to each other, and the two opposite sides of the box peripheral wall are respectively connected to the first box wall and the second box wall; the input shaft is rotatably matched with the first box wall, and both the transmission shaft and the output shaft are rotatably matched with the first box wall and the second box wall at the same time; the auxiliary transmission motor is installed on the box peripheral wall.

[0012] Based on the above solution, the structure of the box body is simple, the installation of the input shaft, the transmission shaft, and the output shaft is stable and reliable, and the auxiliary transmission motor is installed on the box peripheral wall, reasonably utilizing the lateral space of the box body, and will not cause the size of the box body in the axial direction of the input shaft to be too large.

[0013] In an alternative embodiment, the auxiliary transmission assembly includes a coupling, an auxiliary transmission shaft, a first bevel gear, an intermediate shaft, and a second bevel gear. The coupling is connected to both the auxiliary transmission motor and the auxiliary transmission shaft at the same time. The auxiliary transmission shaft is rotatably matched with the box peripheral wall, and the intermediate shaft is rotatably matched with the first box wall and the second box wall at the same time; the first bevel gear is installed on the auxiliary transmission shaft, the second bevel gear is installed on the intermediate shaft, and the first bevel gear meshes with the second bevel gear; the intermediate shaft is connected to the transmission shaft through the clutch.

[0014] Based on the above solution, the auxiliary transmission motor outputs torque to the auxiliary transmission shaft through the coupling. The auxiliary transmission shaft outputs torque to the intermediate shaft through the cooperation of the first bevel gear and the second bevel gear. The intermediate shaft is connected to the transmission shaft through the clutch. In the initial stage, the intermediate shaft can transmit torque to the transmission shaft through the clutch. When the speed of the transmission shaft reaches the set speed driven by the gas turbine body, the clutch disengages, the intermediate shaft is separated from the transmission shaft, and the auxiliary transmission mechanism stops operating.

[0015] In an alternative embodiment, both the input shaft and the transmission shaft are provided as gear shafts; the main transmission mechanism further includes a first transmission gear and a second transmission gear. The first transmission gear is sleeved outside the transmission shaft, and the input shaft meshes with the first transmission gear; the second transmission gear is sleeved outside the output shaft, and the transmission shaft meshes with the second transmission gear.

[0016] Based on the above solution, a gear transmission part is integrated on the input shaft, and torque transmission is achieved by meshing the gear transmission part with the first gear. It has high structural strength, saves components, and reduces the failure rate. Similarly, a gear transmission part is integrated on the transmission shaft, and torque is transmitted to the output shaft by meshing the gear transmission part with the second gear. The transmission shaft has high structural strength, fewer components, reduces the assembly difficulty, and reduces the failure rate.

[0017] In an alternative embodiment, the input shaft is provided with a spline hole.

[0018] Based on the above solution, the output part of the combustion engine body is directly inserted into the spline hole to achieve transmission connection, which is convenient for assembly.

[0019] In an alternative embodiment, the clutch is set as an overrunning clutch.

[0020] Based on the above solution, when the combustion engine body starts and drives the transmission shaft to rotate, when the rotation speed of the transmission shaft reaches the preset speed and is greater than the speed of the intermediate shaft, the overrunning clutch can automatically disengage, the intermediate shaft is separated from the transmission shaft, and the auxiliary transmission mechanism idles, which is convenient for subsequent stopping of motion.

[0021] In an alternative embodiment, the main transmission mechanism further includes a speed measuring gear, the speed measuring gear is sleeved outside the output shaft and is close to the box body, the end of the output shaft away from the box body extends out of the speed measuring gear, the shaft part of the output shaft extending out of the speed measuring gear is used for outputting torque, and the speed measuring gear is used for obtaining the rotation speed of the output shaft.

[0022] Based on the above solution, the real-time rotation speed of the output shaft can be obtained through the speed measuring gear, so as to facilitate the control of the operation of the combustion engine generator set.

[0023] In a second aspect, the present invention provides a combustion engine generator assembly, which includes:

[0024] A combustion engine body, a generator body, and the gearbox for the combustion engine generator set according to any one of the foregoing embodiments, the combustion engine body is connected to the input shaft, and the output shaft is connected to the generator body.

[0025] In an alternative embodiment, the combustion engine generator assembly further includes a moving mechanism, and the combustion engine body, the generator body, and the box body are all installed on the moving mechanism.

[0026] Based on the above solution, the design of the moving mechanism facilitates the transfer and position adjustment of the entire combustion engine generator assembly, and can be used in different scenarios, with flexible use and a wide range of applications.

[0027] The beneficial effects of the embodiments of the present invention are:

[0028] In summary, for the gearbox for a gas turbine generator set provided in this embodiment, the main transmission mechanism and the auxiliary transmission mechanism are integrated on the box body at the same time. The gearbox has both the main transmission function and the auxiliary transmission function. During use, the gearbox is cooperated with the gas turbine body and the generator body at the same time. Moreover, the output part of the gas turbine body is connected to the input shaft, and the input part of the generator body is connected to the output shaft. There is no need to perform the step of separately assembling the main transmission mechanism and the auxiliary transmission mechanism with the gearbox, which simplifies the assembly process, shortens the assembly time, and improves the assembly efficiency. In addition, the gearbox has a high degree of integration, a compact overall structure, a small volume, and occupies a small space, making the entire gas turbine generator set small in volume, facilitating the miniaturization and lightweight design of the gas turbine generator set, and facilitating the movement of the gas turbine generator set. The gas turbine generator set can be used in different scenarios, has a wide range of uses, and reduces the operation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is a schematic diagram of a perspective view of the gearbox for a gas turbine generator set according to an embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of another perspective view of the gearbox for a gas turbine generator set according to an embodiment of the present invention.

[0032] REFERENCE MARKS:

[0033] 100 - box body; 110 - first box wall; 120 - second box wall; 130 - box peripheral wall; 140 - mounting bracket; 200 - main transmission mechanism; 210 - input shaft; 220 - transmission shaft; 230 - output shaft; 240 - first transmission gear; 250 - second transmission gear; 260 - speed measurement gear; 300 - auxiliary transmission mechanism; 310 - auxiliary transmission motor; 320 - coupling; 330 - auxiliary transmission shaft; 340 - first bevel gear; 350 - intermediate shaft; 360 - second bevel gear; 370 - overrunning clutch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0036] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0037] In the description of the present utility model, 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 drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model 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 of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0038] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0039] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" 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 utility model can be understood according to specific situations.

[0040] In the prior art, the main drive assembly and the auxiliary drive assembly of a gas turbine generator set are independently arranged with the gearbox. There are many components, which are relatively scattered. The assembly steps are cumbersome and the efficiency is low. Moreover, the multiple components are scattered, resulting in a large volume of the gas turbine generator set, a large occupied space, and limited usage scenarios.

[0041] In view of this, the designer provides a gearbox for a gas turbine generator set, which has high integration, a compact structure, a small volume, a small occupied space, convenient assembly, high assembly efficiency, and can be used in different scenarios.

[0042] Please refer to Figure 1 and Figure 2 , in this embodiment, the gearbox for a gas turbine generator set includes a box body 100, a main drive mechanism 200, and an auxiliary drive mechanism 300. The main drive mechanism 200 includes an input shaft 210, a drive shaft 220, and an output shaft 230 that are all rotatably engaged with the box body 100. The input shaft 210, the output shaft 230, and the drive shaft 220 are arranged in parallel at intervals. The input shaft 210 is in driving cooperation with the drive shaft 220, the drive shaft 220 is in driving cooperation with the output shaft 230, and the output shaft 230 is used to output torque. The auxiliary drive mechanism 300 includes an auxiliary drive motor 310, an auxiliary drive assembly, and a clutch. The auxiliary drive motor 310 is installed on the box body 100. The auxiliary drive motor 310 is connected to the auxiliary drive assembly. The auxiliary drive assembly is in driving cooperation with the drive shaft 220 through the clutch. The direction in which the auxiliary drive assembly drives the drive shaft 220 to rotate is the same as the direction in which the input shaft 210 drives the drive shaft 220 to rotate.

[0043] Continuing from the above, the working mode of the gearbox for a gas turbine generator set provided in this embodiment is as follows:

[0044] Since the main drive mechanism 200 and the auxiliary drive mechanism 300 are both integrated on the box body 100, the gearbox has both the main drive function and the auxiliary drive function. During use, the gearbox can be cooperated with the gas turbine body and the generator body at the same time. Connect the output part of the gas turbine body to the input shaft 210, and connect the input part of the generator body to the output shaft 230. In the initial stage, use the auxiliary drive mechanism 300 to output torque to the drive shaft 220, and then drive the gas turbine body to move through the input shaft 210. After the gas turbine body moves normally, torque is output to the input shaft 210. When the rotation speed of the input shaft 210 meets the set rotation speed, the auxiliary drive mechanism 300 is disengaged from the drive shaft 220, and the torque can be input from the output shaft 230 to the generator set by relying on the gas turbine body.

[0045] Since the gearbox integrates the main transmission mechanism 200 and the auxiliary transmission mechanism 300, the steps of separately assembling the main transmission mechanism 200 and the auxiliary transmission mechanism 300 with the gearbox are omitted, simplifying the assembly process, shortening the assembly time, and improving the assembly efficiency. Moreover, the gearbox has a high integration level, a compact overall structure, a small volume, and occupies little space, making the entire gas turbine generator set small in size, facilitating the miniaturization and lightweight design of the gas turbine generator set, and making it easy to move the gas turbine generator set. The gas turbine generator set can be used in different scenarios, has a wide range of applications, and reduces the operating cost.

[0046] The following embodiments will illustrate the details of the gearbox for a gas turbine generator set provided by the present application by way of example.

[0047] Please refer to Figure 1 and Figure 2 In this embodiment, optionally, the gearbox for a gas turbine generator set includes a box body 100, a main transmission mechanism 200, and an auxiliary transmission mechanism 300. The main transmission mechanism 200 and the auxiliary transmission mechanism 300 are both installed on the box body 100, and the gearbox realizes the integration of the main transmission function and the auxiliary transmission function.

[0048] In this embodiment, optionally, the box body 100 includes a first box wall 110, a second box wall 120, and a box peripheral wall 130. The first box wall 110 and the second box wall 120 are arranged opposite to each other at intervals. The box peripheral wall 130 is a rectangular ring wall, and the box peripheral wall 130 is located between the first box wall 110 and the second box wall 120. The two opposite openings of the box peripheral wall 130 are respectively connected to the first box wall 110 and the second box wall 120. The first box wall 110 is adjacent to the box peripheral wall 130, and the second box wall 120 is adjacent to the box peripheral wall 130. Among them, an installation frame 140 is also integrated on the outer side of the first box wall 110. The installation frame 140 and the first box wall 110 can be of an integral structure, or the two are detachably connected by bolts or the like.

[0049] It should be understood that the first box wall 110 and the box peripheral wall 130 can be connected by bolts, and the second box wall 120 and the box peripheral wall 130 can be connected by bolts.

[0050] Please refer to Figure 1 and Figure 2, in this embodiment, optionally, the main transmission mechanism 200 includes an input shaft 210, a transmission shaft 220, an output shaft 230, a first transmission gear 240 and a second transmission gear 250. Among them, both the input shaft 210 and the transmission shaft 220 are provided as gear shafts, that is, integral gear transmission parts are provided on both the input shaft 210 and the output shaft 230. The input shaft 210 is rotatably fitted with the mounting bracket 140, both ends of the transmission shaft 220 are rotatably fitted with the first box wall 110 and the second box wall 120 through bearings respectively, and the output shaft 230 is rotatably fitted with the first box wall 110 and the second box wall 120 through bearings respectively. The axis of the input shaft 210 is located between the axes of the transmission shaft 220 and the output shaft 230, and the input shaft 210, the transmission shaft 220 and the output shaft 230 are arranged in parallel at intervals. The first transmission gear 240 is sleeved outside the transmission shaft 220 and is located between the first box wall 110 and the mounting bracket 140, and the gear transmission part on the input shaft 210 meshes with the first gear. The second transmission gear 250 is sleeved outside the output shaft 230, and the second transmission gear 250 meshes with the gear transmission part on the transmission shaft 220. In this way, when the input shaft 210 rotates, it drives the first transmission gear 240 to rotate, the first transmission gear 240 drives the transmission shaft 220 to rotate, the transmission shaft 220 drives the second transmission gear 250 to rotate, and finally the output shaft 230 rotates to output torque.

[0051] Optionally, the input shaft 210 is provided with a spline hole, which is beneficial to connect the input shaft 210 and the engine body by using the spline hole.

[0052] Optionally, the end of the output shaft 230 extends out of the second box wall 120, and a keyway is provided on the outer peripheral surface of the output shaft 230. A connecting spline can be embedded in the keyway, and the output shaft 230 is connected to the generator body through the connecting spline.

[0053] Optionally, a speed measuring gear 260 is sleeved on the shaft part of the output shaft 230 extending out of the second box wall 120. The speed measuring gear 260 is arranged close to the second box wall 120 and does not affect the connection between the output shaft 230 and the generator body. The rotation speed of the output shaft 230 can be obtained in real time through the speed measuring gear 260, which is beneficial to regulation.

[0054] Please combine Figure 1 and Figure 2, in this embodiment, optionally, the auxiliary transmission mechanism 300 includes an auxiliary transmission motor 310, an auxiliary transmission assembly, and a clutch. The auxiliary transmission assembly includes a coupling 320, an auxiliary transmission shaft 330, a first bevel gear 340, an intermediate shaft 350, and a second bevel gear 360. The auxiliary transmission motor 310 can be installed on the box peripheral wall 130 through structural members such as bolts. The rotating shaft of the auxiliary transmission motor 310 is connected to the auxiliary transmission shaft 330 through the coupling 320. The auxiliary transmission shaft 330 is rotatably installed on the box peripheral wall 130 through bearings. The auxiliary transmission shaft 330 is perpendicular to the input shaft 210, the transmission shaft 220, and the output shaft 230. The first bevel gear 340 is installed outside the auxiliary transmission shaft 330 and is fixedly connected to it. The first bevel gear 340 can be integrally formed with the auxiliary transmission shaft 330. The intermediate shaft 350 is rotatably connected to the first box wall 110 and the second box wall 120 through bearings. The intermediate shaft 350 is located on the side of the transmission shaft 220 away from the output shaft 230. The intermediate shaft 350 is parallel to the input shaft 210. The second bevel gear is sleeved outside the intermediate shaft 350 and is fixedly matched with it. The first bevel gear 340 and the second bevel gear 360 are meshed. The clutch is set as an overrunning clutch 370. The overrunning clutch 370 is arranged at one end of the transmission shaft 220 away from the input shaft 210, that is, the overrunning clutch 370 is arranged outside the second box wall 120. The overrunning clutch 370 is used to connect the intermediate shaft 350 and the transmission shaft 220. That is, when the overrunning clutch 370 is in the engaged state, the intermediate shaft 350 can transmit torque to the transmission shaft 220 through the overrunning clutch 370. When the overrunning clutch 370 is in the disengaged state, the intermediate shaft 350 is separated from the transmission shaft 220, and torque transmission cannot be achieved.

[0055] It should be noted that the auxiliary transmission motor 310 is arranged on the box peripheral wall 130, and the input shaft 210 is arranged on the first box wall 110. The first box wall 110 and the box peripheral wall 130 are adjacent. In this way, the input shaft 210 and the auxiliary transmission motor 310 are arranged on the adjacent box walls of the box body 100, making reasonable use of the space around the box body 100, and there will be no situation where the size of the gearbox is too large in the axial direction of the input shaft 210, improving the compactness of the gearbox structure and reducing the volume of the gearbox body 100.

[0056] The gearbox for a gas turbine generator set provided in this embodiment has a compact structure, a small volume, occupies a small space, and is flexible and convenient to use.

[0057] This embodiment also provides a gas turbine generator assembly. The gas turbine generator assembly includes a gas turbine body, a generator body, and a gearbox for a gas turbine generator set. The gas turbine body is connected to the input shaft 210, and the output shaft 230 is connected to the generator body.

[0058] Optionally, the gas turbine generator assembly further includes a moving mechanism, and the gas turbine body, the generator body, and the box body 100 are all installed on the moving mechanism. The design of the moving mechanism facilitates the transfer and position adjustment of the entire gas turbine generator assembly, enabling it to be used in different scenarios, with flexible use and a wide range of applications.

[0059] It should be understood that the moving mechanism may include a chassis and walking wheels. The walking wheels are installed on the chassis, and the gas turbine body, the generator body, and the box body 100 are all installed on the chassis. The walking wheels can be driven by a motor or the like, thus saving the manpower required for the operation of the moving mechanism.

[0060] The gas turbine generator assembly provided in this embodiment has the advantages of compact structure, small volume, easy movement, and flexible use.

[0061] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A gearbox for a gas turbine generator set, characterized in that, Comprising: A housing (100), a main transmission mechanism (200) and an auxiliary transmission mechanism (300); the main transmission mechanism (200) includes an input shaft (210), a transmission shaft (220) and an output shaft (230) which are all rotatably fitted with the housing (100), the input shaft (210), the output shaft (230) and the transmission shaft (220) are arranged in parallel at intervals, the input shaft (210) is in transmission cooperation with the transmission shaft (220), the transmission shaft (220) is in transmission cooperation with the output shaft (230), and the output shaft (230) is used for outputting torque; the auxiliary transmission mechanism (300) includes an auxiliary transmission motor (310), an auxiliary transmission assembly and a clutch, the auxiliary transmission motor (310) is installed on the housing (100), the auxiliary transmission motor (310) is connected to the auxiliary transmission assembly, the auxiliary transmission assembly is in transmission cooperation with the transmission shaft (220) through the clutch, and the direction in which the auxiliary transmission assembly drives the transmission shaft (220) to rotate is the same as the direction in which the input shaft (210) drives the transmission shaft (220) to rotate.

2. The gearbox for a gas turbine generator set according to claim 1, wherein: The input shaft (210) and the auxiliary transmission motor (310) are respectively arranged on adjacent sides of the housing (100).

3. The gearbox for a gas turbine generator set according to claim 2, wherein: The housing (100) includes a first box wall (110), a second box wall (120) and a box peripheral wall (130), the first box wall (110) and the second box wall (120) are arranged opposite to each other at intervals, and the two opposite sides of the box peripheral wall (130) are respectively connected to the first box wall (110) and the second box wall (120); the input shaft (210) is rotatably fitted with the first box wall (110), and both the transmission shaft (220) and the output shaft (230) are rotatably fitted with both the first box wall (110) and the second box wall (120); the auxiliary transmission motor (310) is installed on the box peripheral wall (130).

4. The gearbox for a gas turbine generator set according to claim 3, wherein: The auxiliary transmission assembly includes a coupling (320), an auxiliary transmission shaft (330), a first bevel gear (340), an intermediate shaft (350) and a second bevel gear (360), the coupling (320) is connected to both the auxiliary transmission motor (310) and the auxiliary transmission shaft (330) at the same time, the auxiliary transmission shaft (330) is rotatably fitted with the box peripheral wall (130), and the intermediate shaft (350) is rotatably fitted with both the first box wall (110) and the second box wall (120) at the same time; the first bevel gear (340) is installed on the auxiliary transmission shaft (330), the second bevel gear (360) is installed on the intermediate shaft (350), and the first bevel gear (340) meshes with the second bevel gear (360); the intermediate shaft (350) is connected to the transmission shaft (220) through the clutch.

5. The gearbox for a gas turbine generator set according to claim 1, characterized in that: The input shaft (210) and the transmission shaft (220) are both arranged as gear shafts; the main transmission mechanism (200) further includes a first transmission gear (240) and a second transmission gear (250), the first transmission gear (240) is sleeved outside the transmission shaft (220), and the input shaft (210) meshes with the first transmission gear (240); the second transmission gear (250) is sleeved outside the output shaft (230), and the transmission shaft (220) meshes with the second transmission gear (250).

6. The gearbox for a gas turbine generator set according to claim 1, characterized in that: The input shaft (210) is provided with a spline hole.

7. The gearbox for a gas turbine generator set according to claim 1, characterized in that: The clutch is arranged as an overrunning clutch (370).

8. The gearbox for a gas turbine generator set according to claim 1, characterized in that: The main transmission mechanism (200) further includes a speed measuring gear (260), the speed measuring gear (260) is sleeved outside the output shaft (230) and is arranged close to the housing (100), the end of the output shaft (230) far from the housing (100) extends out of the speed measuring gear (260), the shaft part of the output shaft (230) extending out of the speed measuring gear (260) is used for outputting torque, and the speed measuring gear (260) is used for obtaining the rotational speed of the output shaft (230).

9. A gas turbine generator assembly, characterized in that, The gas turbine generator assembly includes: A gas turbine body, a generator body, and the gearbox for a gas turbine generator set according to any one of claims 1-8, the gas turbine body is connected to the input shaft (210), and the output shaft (230) is connected to the generator body.

10. The gas turbine generator assembly according to claim 9, characterized in that: The gas turbine generator assembly further includes a moving mechanism, and the gas turbine body, the generator body, and the housing (100) are all installed on the moving mechanism.

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