Transmission structure of hydraulic torque converter for heavy gas turbine

Abstract

The invention discloses a transmission structure of a hydraulic torque converter for a heavy gas turbine, and relates to the technical field of gas turbine starting. The problems that the centering failure rate and the mounting and dismounting complexity of the hydraulic torque converter can be greatly increased through a conventional transmission structure and a pipeline arrangement method, the product performance is affected, meanwhile, the boundary dimension of the hydraulic torque converter is increased, and the cost is increased are solved. The hydraulic torque converter transmission structure adopting the structure can meet the starting characteristic of a gas turbine, can be matched with the rotating speed of a motor, the gas turbine and a machine belt lubricating oil pump, and can reduce centering faults. By the adoption of the oil way arrangement method, high-pressure working oil needed by a pump wheel and a turbine and low-pressure lubricating oil needed by speed ratio matching gears and bearings of a motor and a gas turbine can be met at the same time, meanwhile, the space size is reduced, and cost is saved. The method is suitable for the technical field of heavy gas turbine starting.

Description

Technical Field

[0001] The invention relates to the technical field of gas engine starting, and in particular to a transmission structure of a hydraulic torque converter for a heavy-duty gas engine. Background Art

[0002] At present, heavy-duty gas turbine power generation has many advantages such as high reliability, long life, less pollution, energy saving and environmental protection, and has gradually become an efficient energy supply channel and development trend. The design of modern gas turbines is based on the Brayton cycle, and its compressor, turbine and generator are on the same rotor. During the starting process, the gas turbine can only ignite under the condition of a suitable air-gas ratio with the help of external force to drive the entire rotor to rotate. Therefore, each gas turbine needs a set of starting devices that can provide sufficient power to start the gas turbine smoothly. The most widely used no-load test of gas turbines currently uses an AC motor + torque converter system + gearbox (or direct-connected gas turbine). When the gas turbine is started, the motor runs at the rated speed, and the torque converter drives the gas turbine rotor through the gear transmission device to continuously increase the speed until the self-sustaining speed of the gas turbine. The advantage of this is that it can reduce the impact caused by the start of heavy-duty gas turbines and protect the starting motor from damage. Therefore, a torque converter with superior performance is very necessary.

[0003] Since the hydraulic torque converter for heavy-duty gas engines needs to match the starting characteristics of the gas turbine and connect the motor and the gas engine at the same time, it is required to take into account the self-lubrication and speed ratio matching functions with the motor and gearbox. Therefore, compared with ordinary hydraulic torque converters, its transmission structure is more complicated and more prone to poor alignment failures caused by processing errors. In addition, when supplying oil to the hydraulic torque converter, not only the high-pressure working oil required by the pump and turbine itself must be considered, but also the low-pressure lubricating oil required for the speed ratio matching gears and bearings of the gas engine must be considered. The hydraulic torque converter shares a stand with the gas engine, has a small space size, and a narrow oil channel space. If conventional transmission structure and piping layout methods are used, the alignment failure rate of the hydraulic torque converter and the complexity of installation and disassembly will be greatly increased, affecting product performance. At the same time, the external dimensions of the hydraulic torque converter will be increased, increasing costs. Summary of the invention

[0004] The present invention proposes a transmission structure for a hydraulic torque converter for a heavy-duty gas engine to solve the problem that conventional transmission structures and pipeline layout methods will greatly increase the centering failure rate of the hydraulic torque converter and the complexity of installation and disassembly, affect product performance, and at the same time increase the external dimensions of the hydraulic torque converter and increase costs.

[0005] The transmission structure of a hydraulic torque converter for a heavy-duty combustion engine of the present invention comprises a front pinion 1, a front gear 2, a belt pump adapter sleeve 3, an adapter spline shaft 4, a pump wheel 5, a turbine 6, a guide wheel 7, a rear gear 8, a rear pinion 9, a front plate 10, a front housing 11, a middle housing 12, a rear housing 13, a rear plate 14, a front pinion bearing 15, a front gear bearing 16, an adapter spline bearing 17, a rear pinion bearing 18 and a rear gear bearing 19;

[0006] The front shell 11, the middle shell 12 and the rear shell 13 are connected and arranged in sequence from left to right, and a through hole is processed in the middle of the end surface of the front shell 11, the middle shell 12 and the rear shell 13 respectively. After the end of the transfer spline shaft 4 passes through the through holes of the front shell 11 and the middle shell 12 in sequence, it is rotatably connected with the through hole of the rear shell 13. A machine belt pump transfer sleeve 3 is sleeved on one end of the transfer spline shaft 4, and a front end large gear 2 is provided in the middle of the machine belt pump transfer sleeve 3, and the front end large gear 2 is arranged inside the front shell 11. A front pinion 1 is provided at the upper part of the inner cavity of the housing 11, and the front pinion 1 is meshed with the front large gear 2. Through holes are respectively processed at the upper ends of the two opposite inner walls inside the front housing 11, and a front pinion bearing 15 is provided inside each through hole. The two front pinion bearings 15 are rotatably connected with the front pinion 1 through a rotating shaft. A front large gear bearing 16 is respectively provided at both ends of the machine belt pump adapter sleeve 3. The front end surface of the front housing 11 is fixedly connected with the front end plate 10 by bolts, and the adapter spline shaft 4 A transfer spline bearing 17 is respectively provided between the outer surface of the transfer spline shaft 4 and the inner walls of the two through holes of the middle housing 12, a pump wheel 5 is provided in the middle of the outer surface of the transfer spline shaft 4, a turbine 6 is provided on one side of the pump wheel 5 on the transfer spline shaft 4, and the pump wheel 5 and the turbine 6 are both arranged inside the middle housing 12, a guide wheel 7 is provided on the inner wall of the middle housing 12, and the guide wheel 7 is rotatably connected to the inner wall of the middle housing 12, and the guide wheel 7 is meshed with the pump wheel 5, a rear end large gear 8 is provided on the other end of the transfer spline shaft 4, a rear end small gear 9 is provided on the upper part of the inner cavity of the rear housing 13, and a through hole is respectively processed on the upper part of the two opposite inner walls inside the rear housing 13, and a rear end small gear bearing 18 is provided inside each through hole, and the two rear end small gear bearings 18 are rotatably connected to the rear end small gear 9 through a rotating shaft, and the rear end small gear 9 is meshed with the rear end large gear 8, and a rear end large gear bearing 19 is respectively provided on both sides of the rear end large gear 8 on the other end of the transfer spline shaft 4, and the rear end surface of the rear housing 13 is connected to the rear end plate 14 by bolts;

[0007] Furthermore, a first oil inlet hole 10-1 is processed on the upper end surface of the front end plate 10, and a second oil inlet hole 10-2 is processed on the lower end surface of the front end plate 10;

[0008] Furthermore, the outer surface of the front housing 11 is processed with a first front housing oil inlet hole 11-1, a second front housing oil inlet hole 11-2 and a front housing low-pressure lubricating oil drain hole 11-3 in sequence along the circumferential direction;

[0009] Furthermore, the outer surface of the middle shell 12 is processed with a first middle shell oil inlet hole 12-1, a second middle shell oil inlet hole 12-2 and a middle shell high-pressure working oil drain hole 12-3 in sequence along the circumferential direction;

[0010] Furthermore, the outer surface of the rear housing 13 is processed with a No. 1 rear housing oil inlet hole 13-1, a No. 2 rear housing oil inlet hole 13-2 and a rear housing low-pressure lubricating oil drain hole 13-3 in sequence along the circumferential direction;

[0011] Furthermore, a rear cover oil inlet hole 14-1 is processed on the upper end surface of the rear end plate 14, and a rear cover oil inlet hole 14-2 is processed on the lower end surface of the rear end plate 14;

[0012] Furthermore, a rear cover oil inlet hole 14-3 is processed in the middle of the end surface of the rear end plate 14;

[0013] Furthermore, an axial through hole 4-1 is processed in the middle of the end face of the transfer spline shaft 4, and a radial through hole 4-2 is processed on the outer surface of one end of the transfer spline shaft 4, and the axial through hole 4-1 is connected to the radial through hole 4-2;

[0014] Furthermore, the second oil inlet hole 10-2 is a three-way hole, two holes of the second oil inlet hole 10-2 of the front end plate 10 are respectively connected with the second front shell oil inlet hole 11-2, the first front shell oil inlet hole 11-1 and the first oil inlet hole 10-1 of the front shell 11, and the other hole of the second oil inlet hole 10-2 is connected with the oil filling hole of the front large gear bearing 16 through a pipeline;

[0015] Further, the No. 1 oil inlet hole 10-1 is connected to the No. 1 front shell oil inlet hole 11-1 through a pipeline, the No. 2 rear cover oil inlet hole 14-2 is a four-through hole, three of which are connected to the No. 2 middle shell oil inlet hole 12-2, the No. 2 rear shell oil inlet hole 13-2 and the No. 1 rear cover oil inlet hole 14-1 through pipelines, respectively, and the connection between the No. 1 oil inlet hole 10-1 and the No. 1 front shell oil inlet hole 11-1 is connected to another hole of the No. 2 rear cover oil inlet hole 14-2 through a pipeline;

[0016] Furthermore, the No. 1 rear cover oil inlet hole 14-1, the No. 3 rear cover oil inlet hole 14-3 and the No. 1 rear shell oil inlet hole 13-1 are sequentially connected in series through pipelines;

[0017] Furthermore, the second middle shell oil inlet hole 12-2 is connected to the axial through hole 4-1 through a pipeline;

[0018] Further, a. After the motor starts, the front pinion 1 transmits the matched power and speed to the transfer spline shaft 4 by meshing with the front large gear 2. The transfer spline shaft 4 is connected to the pump wheel, and the pump wheel speed is constant at this time. When the working oil is full, the pump wheel 5 drives the turbine 6 to rotate and increases the torque through the guide wheel 7 to achieve high torque starting at low speed. The turbine 6 matches the appropriate speed and power to the engine through the meshing of the rear large gear 8 and the rear pinion 9, and finally drives the engine to rotate. The front pinion bearing 15, the front large gear bearing 16, the transfer spline bearing 17, the rear pinion bearing 18, and the rear large gear bearing 19 are used to support the front pinion 2, the front large gear 3, the transfer spline shaft 4, the rear large gear 8, and the rear large gear 9, respectively.

[0019] b. The No. 2 front shell oil inlet hole 11-2 is the front chamber low-pressure lubricating oil inlet hole, which can supply oil to the front large gear bearing 16 (rear side) and communicate with the No. 2 oil inlet hole 10-2 through the internal hole of the shell. The No. 2 oil inlet hole 10-2 is used to supply oil to the front large gear bearing 15 (front side). The No. 2 oil inlet hole 10-2 is connected to the No. 1 front shell oil inlet hole 11-1 through an external lubricating oil pipeline, and the No. 1 front shell oil inlet hole 11-1 is used to supply oil to the front small gear bearing 15 (rear side). The No. 1 front shell oil inlet hole 11-1 is connected to the No. 1 oil inlet hole 10-1 through the internal pipeline of the shell, and the No. 1 oil inlet hole 10-1 is used to supply oil to the front small gear bearing 15 (front side). All the front chamber lubricating oil is discharged from the front shell low-pressure lubricating oil drain hole 11-3 to the oil tank.

[0020] c. The No. 2 rear shell oil inlet hole 13-2 is the rear chamber low-pressure lubricating oil inlet hole, which can supply oil to the rear end large gear bearing 16 (front side) and communicate with the No. 2 rear cover oil inlet hole 14-2 through the inner hole of the shell. The No. 2 rear cover oil inlet hole 14-2 is a four-way hole, which can be used to supply oil to the rear end large gear bearing 15 (rear side), and is also connected to the No. 1 rear cover oil inlet hole 14-1 and the No. 2 middle shell oil inlet hole 12-2 through an external lubricating oil pipeline. The No. 1 rear cover oil inlet hole 14-1 is a four-way hole, which can be used to supply oil to the rear end small gear bearing 15 (rear side), and is also connected to the No. 1 rear shell oil inlet hole 13-1 and the No. 3 rear cover oil inlet hole 14-3 through an external lubricating oil pipeline. The No. 1 rear shell oil inlet hole 13-1 is used to supply oil to the rear end small gear bearing 15 (front side), and the No. 3 rear cover oil inlet hole 14-3 is used to spray oil to the meshing area of ​​the large and small gears at the rear end. All rear chamber lubricating oil is leaked into the oil tank from the rear shell low-pressure lubricating oil drain hole 13-3.

[0021] d. The No. 1 middle shell oil inlet hole 12-1 is a high-pressure working oil inlet hole, the No. 2 middle shell oil inlet hole 12-2 is connected to the No. 2 rear cover oil inlet hole 14-2, and is used to supply oil to the transfer spline bearing 17. The No. 2 middle shell oil inlet hole 12-2 is connected to the axial through hole 4-1 and the radial through hole 4-2 on the transfer spline shaft 4, and is used to supply oil to the spline matching in the machine-belt pump transfer sleeve 3 and the transfer spline shaft 4. The high-pressure working oil in the middle shell is discharged from the middle shell high-pressure working oil drain hole 12-3.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention overcomes the shortcomings of the prior art. The above-mentioned torque converter transmission structure can meet the starting characteristics of the engine while taking into account the speed matching with the motor, engine, and engine belt lubricating oil pump and reducing the centering failure. The above-mentioned oil circuit layout method can simultaneously meet the high-pressure working oil required by the pump wheel and turbine itself and the low-pressure lubricating oil required by the motor, engine speed ratio matching gear and bearing, while reducing the space size and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a main cross-sectional view of a transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to the present invention;

[0025] Figure 2 It is a top view of a transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to the present invention;

[0026] Figure 3 It is a bottom view of the transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to the present invention;

[0027] Figure 4 It is a front view of a front end plate in a transmission structure of a hydraulic torque converter for a heavy-duty combustion engine according to the present invention;

[0028] Figure 5 It is a front view of a rear end plate in a transmission structure of a hydraulic torque converter for a heavy-duty combustion engine according to the present invention;

[0029] Figure 6 It is a schematic diagram of the connection of the oil holes on the front end plate and the rear end plate in the transmission structure of the hydraulic torque converter for a heavy-duty gas engine according to the present invention;

[0030] Figure 7 It is a schematic diagram of the connection of the oil holes on the front housing, the middle housing and the rear housing in the transmission structure of the hydraulic torque converter for a heavy-duty gas engine described in the present invention;

[0031] Figure 8 It is a schematic diagram of the oil circuit connection of the middle housing in the transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to the present invention;

[0032] Fig. 9 It is a main sectional view of a middle housing in a transmission structure of a hydraulic torque converter for a heavy-duty fuel engine according to the present invention. DETAILED DESCRIPTION

[0033] Specific implementation method 1: Combination Figures 1 to 9 The present embodiment is described. The transmission structure of a hydraulic torque converter for a heavy-duty combustion engine described in the present embodiment comprises a front pinion 1, a front gear 2, a belt pump adapter sleeve 3, an adapter spline shaft 4, a pump wheel 5, a turbine 6, a guide wheel 7, a rear gear 8, a rear pinion 9, a front plate 10, a front housing 11, a middle housing 12, a rear housing 13, a rear plate 14, a front pinion bearing 15, a front gear bearing 16, an adapter spline bearing 17, a rear pinion bearing 18 and a rear gear bearing 19;

[0034] The front shell 11, the middle shell 12 and the rear shell 13 are connected and arranged in sequence from left to right, and a through hole is processed in the middle of the end surface of the front shell 11, the middle shell 12 and the rear shell 13 respectively. After the end of the transfer spline shaft 4 passes through the through holes of the front shell 11 and the middle shell 12 in sequence, it is rotatably connected with the through hole of the rear shell 13. A machine belt pump transfer sleeve 3 is sleeved on one end of the transfer spline shaft 4, and a front end large gear 2 is provided in the middle of the machine belt pump transfer sleeve 3, and the front end large gear 2 is arranged inside the front shell 11. A front pinion 1 is provided at the upper part of the inner cavity of the housing 11, and the front pinion 1 is meshed with the front large gear 2. Through holes are respectively processed at the upper ends of the two opposite inner walls inside the front housing 11, and a front pinion bearing 15 is provided inside each through hole. The two front pinion bearings 15 are rotatably connected with the front pinion 1 through a rotating shaft. A front large gear bearing 16 is respectively provided at both ends of the machine belt pump adapter sleeve 3. The front end surface of the front housing 11 is fixedly connected with the front end plate 10 by bolts, and the adapter spline shaft 4 A transfer spline bearing 17 is respectively provided between the outer surface of the transfer spline shaft 4 and the inner walls of the two through holes of the middle housing 12, a pump wheel 5 is provided in the middle of the outer surface of the transfer spline shaft 4, a turbine 6 is provided on one side of the pump wheel 5 on the transfer spline shaft 4, and the pump wheel 5 and the turbine 6 are both arranged inside the middle housing 12, a guide wheel 7 is provided on the inner wall of the middle housing 12, and the guide wheel 7 is rotatably connected to the inner wall of the middle housing 12, and the guide wheel 7 is meshed with the pump wheel 5, a rear end large gear 8 is provided on the other end of the transfer spline shaft 4, a rear end small gear 9 is provided on the upper part of the inner cavity of the rear housing 13, and a through hole is respectively processed on the upper part of the two opposite inner walls inside the rear housing 13, and a rear end small gear bearing 18 is provided inside each through hole, and the two rear end small gear bearings 18 are rotatably connected to the rear end small gear 9 through a rotating shaft, and the rear end small gear 9 is meshed with the rear end large gear 8, and a rear end large gear bearing 19 is respectively provided on both sides of the rear end large gear 8 on the other end of the transfer spline shaft 4, and the rear end surface of the rear housing 13 is connected to the rear end plate 14 by bolts;

[0035] In this specific implementation, the above-mentioned torque converter transmission structure can meet the starting characteristics of the engine while taking into account the speed matching with the motor, engine, and engine belt lubricating oil pump and reducing the centering failure. The above-mentioned oil circuit layout method can simultaneously meet the high-pressure working oil required by the pump wheel and turbine itself and the low-pressure lubricating oil required by the motor, engine speed ratio matching gear and bearing, while reducing the space size and saving costs.

[0036] Specific implementation method 2: Combination Figures 1 to 9 The present embodiment is described as a further limitation of the transmission structure described in the first specific embodiment. The transmission structure of a hydraulic torque converter for a heavy-duty fuel engine described in the present embodiment comprises a first oil inlet hole 10-1 processed on the upper end surface of the front end plate 10, and a second oil inlet hole 10-2 processed on the lower end surface of the front end plate 10.

[0037] Specific implementation method three: Combination Figures 1 to 9 To explain this embodiment, this embodiment is a further limitation of the transmission structure described in the second specific embodiment. In this embodiment, a transmission structure of a hydraulic torque converter for a heavy-duty fuel engine is described, and the outer surface of the front housing 11 is processed in sequence along the circumferential direction with a front housing oil inlet hole No. 11-1, a front housing oil inlet hole No. 2 11-2 and a front housing low-pressure lubricating oil drain hole 11-3.

[0038] Specific implementation method four: Combination Figures 1 to 9 The present embodiment is described. The present embodiment is a further limitation on the transmission structure described in the third specific embodiment. The present embodiment describes a transmission structure of a hydraulic torque converter for a heavy-duty fuel engine. The outer surface of the middle shell 12 is processed in sequence along the circumferential direction with a first middle shell oil inlet hole 12-1, a second middle shell oil inlet hole 12-2 and a middle shell high-pressure working oil drain hole 12-3.

[0039] Specific implementation method five: Combination Figures 1 to 9 The present embodiment is described as a further limitation of the transmission structure described in the fourth embodiment. The transmission structure of a hydraulic torque converter for a heavy-duty fuel engine described in the present embodiment comprises a rear housing 13 with a No. 1 rear housing oil inlet hole 13-1, a No. 2 rear housing oil inlet hole 13-2 and a rear housing low-pressure lubricating oil drain hole 13-3 processed in sequence on the outer surface along the circumferential direction.

[0040] Specific implementation method six: Combination Figures 1 to 9 The present embodiment is described as a further limitation of the transmission structure described in the fifth embodiment. The transmission structure of a hydraulic torque converter for a heavy-duty fuel engine described in the present embodiment comprises a rear cover oil inlet hole 14-1 processed on the upper end surface of the rear end plate 14, a rear cover oil inlet hole 14-2 processed on the lower end surface of the rear end plate 14, and a rear cover oil inlet hole 14-3 processed on the middle end surface of the rear end plate 14.

[0041] Specific implementation method seven: Combination Figures 1 to 9 The present embodiment is described as a further limitation of the transmission structure described in the sixth specific embodiment. The present embodiment describes a transmission structure of a hydraulic torque converter for a heavy-duty fuel engine, wherein an axial through hole 4-1 is machined in the middle of the end face of the transfer spline shaft 4, and a radial through hole 4-2 is machined on the outer surface of one end of the transfer spline shaft 4, and the axial through hole 4-1 is connected to the radial through hole 4-2.

[0042] Specific implementation method eight: Combination Figures 1 to 9 The present embodiment is described. The present embodiment is a further limitation on the transmission structure described in the specific embodiment seven. The present embodiment describes a transmission structure of a torque converter for a heavy-duty fuel engine. The No. 2 oil inlet hole 10-2 is a three-way hole. Two holes of the No. 2 oil inlet hole 10-2 of the front end plate 10 are respectively connected to the No. 2 front shell oil inlet hole 11-2, the No. 1 front shell oil inlet hole 11-1 and the No. 1 oil inlet hole 10-1 of the front shell 11. The other hole of the No. 2 oil inlet hole 10-2 is connected to the oil filling hole of the front large gear bearing 16 through a pipeline.

[0043] Specific implementation method nine: Combination Figures 1 to 9 The present embodiment is described. The present embodiment is a further limitation on the transmission structure described in the eighth specific embodiment. The present embodiment describes a transmission structure of a torque converter for a heavy-duty fuel engine. The oil inlet hole No. 10-1 is connected to the oil inlet hole No. 11-1 of the front shell through a pipeline. The oil inlet hole No. 2 of the rear cover 14-2 is a four-through hole. Three through holes of the oil inlet hole No. 2 of the rear cover 14-2 are respectively connected to the oil inlet hole No. 2 of the middle shell 12-2, the oil inlet hole No. 2 of the rear shell 13-2 and the oil inlet hole No. 1 of the rear cover through pipelines. The connection between the oil inlet hole No. 10-1 and the oil inlet hole No. 1 of the front shell 11-1 is connected to another hole of the oil inlet hole No. 2 of the rear cover 14-2 through a pipeline.

[0044] Specific implementation method ten: Combination Figures 1 to 9 The present embodiment is described as a further limitation of the transmission structure described in the ninth embodiment. The present embodiment describes a transmission structure of a hydraulic torque converter for a heavy-duty fuel engine, wherein the No. 1 rear cover oil inlet hole 14-1, the No. 3 rear cover oil inlet hole 14-3 and the No. 1 rear shell oil inlet hole 13-1 are sequentially connected in series through pipelines; the No. 2 middle shell oil inlet hole 12-2 is connected to the axial through hole 4-1 through a pipeline.

[0045] How it works

[0046] a. After the motor starts, the front pinion 1 transmits the matched power and speed to the transfer spline shaft 4 by meshing with the front large gear 2. The transfer spline shaft 4 is connected to the pump wheel, and the pump wheel speed is constant at this time. When the working oil is full, the pump wheel 5 drives the turbine 6 to rotate and increases the torque through the guide wheel 7 to achieve high torque starting at low speed. The turbine 6 matches the appropriate speed and power to the engine through the meshing of the rear large gear 8 and the rear pinion 9, and finally drives the engine to rotate. The front pinion bearing 15, the front large gear bearing 16, the transfer spline bearing 17, the rear pinion bearing 18, and the rear large gear bearing 19 are used to support the front pinion 2, the front large gear 3, the transfer spline shaft 4, the rear large gear 8, and the rear large gear 9, respectively.

[0047] b. The No. 2 front shell oil inlet hole 11-2 is the front chamber low-pressure lubricating oil inlet hole, which can supply oil to the front large gear bearing 16 (rear side) and communicate with the No. 2 oil inlet hole 10-2 through the internal hole of the shell. The No. 2 oil inlet hole 10-2 is used to supply oil to the front large gear bearing 15 (front side). The No. 2 oil inlet hole 10-2 is connected to the No. 1 front shell oil inlet hole 11-1 through an external lubricating oil pipeline, and the No. 1 front shell oil inlet hole 11-1 is used to supply oil to the front small gear bearing 15 (rear side). The No. 1 front shell oil inlet hole 11-1 is connected to the No. 1 oil inlet hole 10-1 through the internal pipeline of the shell, and the No. 1 oil inlet hole 10-1 is used to supply oil to the front small gear bearing 15 (front side). All the front chamber lubricating oil is discharged from the front shell low-pressure lubricating oil drain hole 11-3 to the oil tank.

[0048] c. The No. 2 rear shell oil inlet hole 13-2 is the rear chamber low-pressure lubricating oil inlet hole, which can supply oil to the rear end large gear bearing 16 (front side) and communicate with the No. 2 rear cover oil inlet hole 14-2 through the inner hole of the shell. The No. 2 rear cover oil inlet hole 14-2 is a four-way hole, which can be used to supply oil to the rear end large gear bearing 15 (rear side), and is also connected to the No. 1 rear cover oil inlet hole 14-1 and the No. 2 middle shell oil inlet hole 12-2 through an external lubricating oil pipeline. The No. 1 rear cover oil inlet hole 14-1 is a four-way hole, which can be used to supply oil to the rear end small gear bearing 15 (rear side), and is also connected to the No. 1 rear shell oil inlet hole 13-1 and the No. 3 rear cover oil inlet hole 14-3 through an external lubricating oil pipeline. The No. 1 rear shell oil inlet hole 13-1 is used to supply oil to the rear end small gear bearing 15 (front side), and the No. 3 rear cover oil inlet hole 14-3 is used to spray oil to the meshing area of ​​the large and small gears at the rear end. All rear chamber lubricating oil is leaked into the oil tank from the rear shell low-pressure lubricating oil drain hole 13-3.

[0049] d. The No. 1 middle shell oil inlet hole 12-1 is a high-pressure working oil inlet hole, the No. 2 middle shell oil inlet hole 12-2 is connected to the No. 2 rear cover oil inlet hole 14-2, and is used to supply oil to the transfer spline bearing 17. The No. 2 middle shell oil inlet hole 12-2 is connected to the axial through hole 4-1 and the radial through hole 4-2 on the transfer spline shaft 4, and is used to supply oil to the spline matching in the machine-belt pump transfer sleeve 3 and the transfer spline shaft 4. The high-pressure working oil in the middle shell is discharged from the middle shell high-pressure working oil drain hole 12-3.

Claims

1. A transmission structure of a hydraulic torque converter for a heavy-duty gas engine, characterized in that: It comprises a front end pinion (1), a front end gear (2), a belt pump adapter sleeve (3), an adapter spline shaft (4), a pump wheel (5), a turbine (6), a guide wheel (7), a rear end gear (8), a rear end pinion (9), a front end plate (10), a front housing (11), a middle housing (12), a rear housing (13), a rear end plate (14), a front end pinion bearing (15), a front end gear bearing (16), an adapter spline bearing (17), a rear end pinion bearing (18) and a rear end gear bearing (19); The front housing (11), the middle housing (12) and the rear housing (13) are connected in sequence from left to right, and a through hole is processed in the middle of the end faces of the front housing (11), the middle housing (12) and the rear housing (13), respectively. The end of the transfer spline shaft (4) passes through the through holes of the front housing (11) and the middle housing (12) in sequence, and is rotatably connected with the through hole of the rear housing (13). A machine belt pump transfer sleeve (3) is sleeved on one end of the transfer spline shaft (4), and a front end large gear (2) is provided in the middle of the machine belt pump transfer sleeve (3), and the front end large gear (2) is arranged inside the front housing (11). A front pinion gear (1) is provided at the upper part of the inner cavity of the front housing (11), and the front pinion gear (1) meshes with the front large gear (2). Through holes are respectively processed at the upper ends of the two opposite inner walls inside the front housing (11), and a front pinion gear bearing (15) is provided inside each through hole. The two front pinion gear bearings (15) are rotatably connected to the front pinion gear (1) through a rotating shaft. A front large gear bearing (16) is respectively provided at both ends of the machine belt pump adapter sleeve (3). The front end surface of the front housing (11) is fixedly connected to the front end plate (10) by bolts. The outer surface of the adapter spline shaft (4) A transfer spline bearing (17) is respectively arranged between the surface and the inner wall of the two through holes of the middle housing (12); a pump wheel (5) is arranged in the middle of the outer surface of the transfer spline shaft (4); a turbine (6) is arranged on the side of the pump wheel (5) on the transfer spline shaft (4); and the pump wheel (5) and the turbine (6) are both arranged inside the middle housing (12); a guide wheel (7) is arranged on the inner wall of the middle housing (12); the guide wheel (7) is rotatably connected to the inner wall of the middle housing (12); the guide wheel (7) is meshedly connected to the pump wheel (5); a rear end large gear (8) is arranged on the other end of the transfer spline shaft (4); and the rear housing (12) is provided with a plurality of gears. A rear end pinion (9) is provided at the upper part of the inner cavity of the rear housing (13), and a through hole is respectively processed at the upper parts of the two opposite inner walls inside the rear housing (13), and a rear end pinion bearing (18) is provided inside each through hole, and the two rear end pinion bearings (18) are rotatably connected with the rear end pinion (9) through a rotating shaft, and the rear end pinion (9) and the rear end large gear (8) are meshingly connected, and a rear end large gear bearing (19) is respectively provided on both sides of the rear end large gear (8) on the other end of the transfer spline shaft (4), and the rear end surface of the rear housing (13) is connected to the rear end plate (14) through bolts.

2. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to claim 1, characterized in that: The upper portion of the end surface of the front end plate (10) is processed with a first oil inlet hole (10-1), and the lower portion of the end surface of the front end plate (10) is processed with a second oil inlet hole (10-2).

3. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to claim 2, characterized in that: The outer surface of the front housing (11) is processed in sequence along the circumferential direction with a first front housing oil inlet hole (11-1), a second front housing oil inlet hole (11-2) and a front housing low-pressure lubricating oil drain hole (11-3).

4. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to claim 3, characterized in that: The outer surface of the middle shell (12) is processed in sequence along the circumferential direction with a first middle shell oil inlet hole (12-1), a second middle shell oil inlet hole (12-2) and a middle shell high-pressure working oil drain hole (12-3).

5. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to claim 4, characterized in that: The outer surface of the rear housing (13) is processed in sequence along the circumferential direction with a No. 1 rear housing oil inlet hole (13-1), a No. 2 rear housing oil inlet hole (13-2) and a rear housing low-pressure lubricating oil drain hole (13-3).

6. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to claim 5, characterized in that: The upper end surface of the rear end plate (14) is processed with a No. 1 rear cover oil inlet hole (14-1), the lower end surface of the rear end plate (14) is processed with a No. 2 rear cover oil inlet hole (14-2), and the middle end surface of the rear end plate (14) is processed with a No. 3 rear cover oil inlet hole (14-3).

7. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to claim 6, characterized in that: An axial through hole (4-1) is machined in the middle of the end face of the transfer spline shaft (4), a radial through hole (4-2) is machined on the outer surface of one end of the transfer spline shaft (4), and the axial through hole (4-1) is connected to the radial through hole (4-2).

8. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to claim 7, characterized in that: The No. 2 oil inlet hole (10-2) is a three-way hole, two holes of the No. 2 oil inlet hole (10-2) of the front end plate (10) are respectively connected with the No. 2 front shell oil inlet hole (11-2), the No. 1 front shell oil inlet hole (11-1) and the No. 1 oil inlet hole (10-1) of the front shell (11), and the other hole of the No. 2 oil inlet hole (10-2) is connected with the oil filling hole of the front large gear bearing (16) through a pipeline.

9. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to claim 8, characterized in that: The No. 1 oil inlet hole (10-1) is connected to the No. 1 front shell oil inlet hole (11-1) through a pipeline, the No. 2 rear cover oil inlet hole (14-2) is a four-through hole, three of the through holes of the No. 2 rear cover oil inlet hole (14-2) are respectively connected to the No. 2 middle shell oil inlet hole (12-2), the No. 2 rear shell oil inlet hole (13-2) and the No. 1 rear cover oil inlet hole (14-1) through pipelines, and the connection between the No. 1 oil inlet hole (10-1) and the No. 1 front shell oil inlet hole (11-1) is connected to another hole of the No. 2 rear cover oil inlet hole (14-2) through a pipeline.

10. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to claim 9, characterized in that: The No. 1 rear cover oil inlet hole (14-1), the No. 3 rear cover oil inlet hole (14-3) and the No. 1 rear shell oil inlet hole (13-1) are sequentially connected in series through pipelines; the No. 2 middle shell oil inlet hole (12-2) is connected to the axial through hole (4-1) through a pipeline.

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