A transmission structure of a hydraulic torque converter for a heavy-duty gas engine

Abstract

A transmission structure of a hydraulic torque converter for heavy-duty gas engines relates to the technical field of gas engine starting. This is to address the problem that conventional transmission structures and piping layout methods greatly increase the centering failure rate of the hydraulic torque converter and the complexity of installation and disassembly, affecting product performance, while also increasing the external dimensions of the hydraulic torque converter and increasing costs. A hydraulic torque converter transmission structure employing this structure can meet the starting characteristics of the gas engine while also taking into account the speed matching with the motor, gas engine, and engine-belt lubricating oil pump and reducing centering failures. The above-mentioned oil circuit layout method can simultaneously meet the high-pressure working oil required by the impeller and turbine itself and the low-pressure lubricating oil required by the motor, gas engine speed ratio matching gears, and bearings, while reducing space dimensions and saving costs. The present invention is applicable to the technical field of heavy-duty gas engine starting.

Description

Technical Field

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

[0002] Currently, heavy-duty gas turbine power generation offers numerous advantages, including high reliability, long lifespan, low pollution, and energy conservation and environmental protection. It has gradually become a highly efficient energy supply and a growing trend. Modern gas turbine designs are based on the Brayton cycle, with the compressor, turbine, and generator integrated into a single rotor. During startup, the gas turbine requires external force to drive the rotor, and ignition can only occur when the air-gas ratio is appropriate. Therefore, every gas turbine requires a starting device capable of providing sufficient power for a smooth start. Currently, the most widely used no-load test system for gas turbines utilizes an AC motor + torque converter system + gearbox (or a direct-connected gas turbine). During gas turbine startup, the motor operates at rated speed, while the torque converter drives the turbine rotor through a gear transmission, continuously increasing its speed until it reaches the engine's self-sustaining speed. This approach reduces the shock of starting a heavy-duty gas turbine and protects the starter motor from damage. Therefore, a high-performance torque converter is essential.

[0003] Since the hydraulic torque converter for heavy-duty gas turbines needs to match the starting characteristics of the gas turbine and connect the motor and the gas turbine 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 misalignment failures caused by processing errors. In addition, when supplying oil to the hydraulic torque converter, it must not only consider the high-pressure working oil required by its impeller and turbine itself, but also the low-pressure lubricating oil required for the gas turbine speed ratio matching gears and bearings. It shares a stand with the gas turbine, 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 greatly increase the centering failure rate of the hydraulic torque converter and the complexity of installation and disassembly, thereby affecting product performance, while increasing the overall size of the hydraulic torque converter and increasing 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 impeller 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 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. The end of the adapter spline shaft 4 passes through the through holes of the front shell 11 and the middle shell 12 in sequence, and is rotatably connected with the through hole of the rear shell 13. A machine belt pump adapter sleeve 3 is sleeved on one end of the adapter spline shaft 4, and a front end large gear 2 is provided in the middle of the machine belt pump adapter sleeve 3, and the front end large gear 2 is arranged inside the front shell 11. A front end pinion 1 is provided at the upper portion of the inner cavity of the housing 11, and the front end pinion 1 is meshed with the front end gear 2. Through holes are respectively processed on the upper ends of the two opposite inner walls inside the front housing 11, and a front end pinion bearing 15 is provided inside each through hole. The two front end pinion bearings 15 are rotatably connected to the front end pinion 1 through a rotating shaft. A front end gear bearing 16 is respectively provided at both ends of the machine belt pump adapter sleeve 3. The front end face of the front housing 11 is fixedly connected to the front end plate 10 by bolts, and the adapter spline shaft 4 The outer surface of the adapter spline shaft 4 and the inner wall of the two through holes of the middle shell 12 are respectively provided with an adapter spline bearing 17, a pump wheel 5 is provided in the middle of the outer surface of the adapter spline shaft 4, and a turbine 6 is provided on the side of the pump wheel 5 on the adapter spline shaft 4, and the pump wheel 5 and the turbine 6 are both arranged inside the middle shell 12, and a guide wheel 7 is provided on the inner wall of the middle shell 12, and the guide wheel 7 is rotatably connected to the inner wall of the middle shell 12, and the guide wheel 7 is meshed with the pump wheel 5, and a rear end large gear 8 is provided on the other end of the adapter spline shaft 4, and a rear end small gear 9 is provided on the upper part of the inner cavity of the rear shell 13, and a through hole is respectively machined on the upper part of the two opposite inner walls inside the rear shell 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 adapter spline shaft 4, and the rear end surface of the rear shell 13 is connected to the rear end plate 14 by bolts;

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

[0008] Furthermore, the outer surface of the front housing 11 is processed in sequence along the circumferential direction with a No. 1 front housing oil inlet hole 11-1, a No. 2 front housing oil inlet hole 11-2 and a front housing low-pressure lubricating oil drain hole 11-3;

[0009] Furthermore, 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;

[0010] Furthermore, 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;

[0011] Furthermore, the upper end surface of the rear end plate 14 is processed with a No. 1 rear cover oil inlet hole 14-1, and the lower end surface of the rear end plate 14 is processed with a No. 2 rear cover oil inlet hole 14-2;

[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 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;

[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 plate 10 are respectively connected to 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 to the oil filling hole of the front large gear bearing 16 through a pipeline;

[0015] Furthermore, the No. 1 oil inlet hole 10-1 is connected to the No. 1 front shell oil inlet hole 11-1 through a pipe, and the No. 2 rear cover oil inlet hole 14-2 is a four-hole through-hole. Three of the through-holes of the No. 2 rear cover oil inlet hole 14-2 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 pipes respectively. 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 pipe.

[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 pipes;

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

[0018] Furthermore, a. After the motor starts, the front pinion 1 meshes with the front gear 2 to transmit the matched power and speed to the adapter spline shaft 4, which is connected to the pump impeller. At this time, the pump impeller speed is constant. When the working oil is full, the pump impeller 5 drives the turbine 6 to rotate and increases the torque through the guide wheel 7, achieving high-torque starting at low speed. The turbine 6 meshes with the rear gear 8 and the rear pinion 9 to match the appropriate speed and power and transmit it to the engine, ultimately driving the engine to rotate. The front pinion bearing 15, the front gear bearing 16, the adapter spline bearing 17, the rear pinion bearing 18, and the rear gear bearing 19 are used to support the front pinion 2, the front gear 3, the adapter spline shaft 4, the rear gear 8, and the rear gear 9, respectively.

[0019] b. Front housing oil inlet hole #2 (11-2) is the low-pressure lubricating oil inlet for the front chamber. This hole not only supplies oil to the front large gear bearing 16 (rear side), but also communicates with oil inlet hole #2 (10-2) through an internal housing hole. Oil inlet hole #2 (10-2) supplies oil to the front large gear bearing 15 (front side). Oil inlet hole #2 (10-2) is connected to oil inlet hole #1 (11-1) via an external oil line. Oil inlet hole #1 (11-1) supplies oil to the front small gear bearing 15 (rear side). Oil inlet hole #1 (11-1) communicates with oil inlet hole #1 (10-1) through an internal housing line. Oil inlet hole #1 (10-1) supplies oil to the front small gear bearing 15 (front side). All front chamber lubricating oil is discharged into the oil tank through front housing low-pressure lubricating oil drain hole 11-3.

[0020] c. The No. 2 rear housing oil inlet 13-2 is the low-pressure lubricating oil inlet for the rear chamber. This hole not only supplies oil to the rear end gear bearing 16 (front side) but also communicates with the No. 2 rear cover oil inlet 14-2 through a hole inside the housing. The No. 2 rear cover oil inlet 14-2 is a four-way hole that supplies oil to the rear end gear bearing 15 (rear side). It is also connected to the No. 1 rear cover oil inlet 14-1 and the No. 2 middle housing oil inlet 12-2 via external oil lines. The No. 1 rear cover oil inlet 14-1 is a four-way hole that supplies oil to the rear end pinion bearing 15 (rear side). It is also connected to the No. 1 rear cover oil inlet 13-1 and the No. 3 rear cover oil inlet 14-3 via external oil lines. The No. 1 rear cover oil inlet 13-1 is used to supply oil to the rear end pinion bearing 15 (front side), while the No. 3 rear cover oil inlet 14-3 is used to spray oil into the meshing area of ​​the rear end gear and pinion. All rear chamber lubricating oil is discharged to the oil tank from the rear shell low-pressure lubricating oil drain hole 13-3.

[0021] d. The first middle casing oil inlet hole 12-1 is for high-pressure working oil. The second middle casing oil inlet hole 12-2 is connected to the second rear cover oil inlet hole 14-2 for supplying oil to the adapter spline bearing 17. The second middle casing oil inlet hole 12-2 is connected to the axial through-hole 4-1 and radial through-hole 4-2 on the adapter spline shaft 4 for supplying oil to the splines in the engine-driven pump adapter sleeve 3 and the adapter spline shaft 4. The high-pressure working oil in the middle casing is discharged through the middle casing high-pressure working oil drain hole 12-3.

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

[0023] This invention overcomes the shortcomings of existing technologies. The aforementioned torque converter transmission structure meets the engine's starting characteristics while also ensuring speed matching with the motor, engine, and belt oil pump, and reducing misalignment issues. The aforementioned oil circuit layout simultaneously provides both the high-pressure operating oil required by the impeller and turbine itself and the low-pressure lubricating oil required by the motor and engine's gears and bearings for speed matching, while also reducing space requirements and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 3 This 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 This is a front view of a front end plate in a transmission structure of a hydraulic torque converter for a heavy-duty gas engine according to the present invention;

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

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

[0030] Figure 7 This 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 a hydraulic torque converter for a heavy-duty gas engine according to the present invention;

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

[0032] Figure 9 It is a main sectional view of a middle housing in a transmission structure of a hydraulic torque converter for a heavy-duty gas 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 includes a front pinion 1, a front gear 2, a belt pump adapter sleeve 3, an adapter spline shaft 4, a pump impeller 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 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. The end of the adapter spline shaft 4 passes through the through holes of the front shell 11 and the middle shell 12 in sequence, and is rotatably connected with the through hole of the rear shell 13. A machine belt pump adapter sleeve 3 is sleeved on one end of the adapter spline shaft 4, and a front end large gear 2 is provided in the middle of the machine belt pump adapter sleeve 3, and the front end large gear 2 is arranged inside the front shell 11. A front end pinion 1 is provided at the upper portion of the inner cavity of the housing 11, and the front end pinion 1 is meshed with the front end gear 2. Through holes are respectively processed on the upper ends of the two opposite inner walls inside the front housing 11, and a front end pinion bearing 15 is provided inside each through hole. The two front end pinion bearings 15 are rotatably connected to the front end pinion 1 through a rotating shaft. A front end gear bearing 16 is respectively provided at both ends of the machine belt pump adapter sleeve 3. The front end face of the front housing 11 is fixedly connected to the front end plate 10 by bolts, and the adapter spline shaft 4 The outer surface of the adapter spline shaft 4 and the inner wall of the two through holes of the middle shell 12 are respectively provided with an adapter spline bearing 17, a pump wheel 5 is provided in the middle of the outer surface of the adapter spline shaft 4, and a turbine 6 is provided on the side of the pump wheel 5 on the adapter spline shaft 4, and the pump wheel 5 and the turbine 6 are both arranged inside the middle shell 12, and a guide wheel 7 is provided on the inner wall of the middle shell 12, and the guide wheel 7 is rotatably connected to the inner wall of the middle shell 12, and the guide wheel 7 is meshed with the pump wheel 5, and a rear end large gear 8 is provided on the other end of the adapter spline shaft 4, and a rear end small gear 9 is provided on the upper part of the inner cavity of the rear shell 13, and a through hole is respectively machined on the upper part of the two opposite inner walls inside the rear shell 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 adapter spline shaft 4, and the rear end surface of the rear shell 13 is connected to the rear end plate 14 by bolts;

[0035] In this specific embodiment, the aforementioned torque converter transmission structure meets the engine's starting characteristics while also ensuring speed matching with the motor, engine, and belt oil pump, and reducing misalignment issues. The aforementioned oil circuit layout simultaneously provides both the high-pressure operating oil required by the impeller and turbine itself and the low-pressure lubricating oil required by the motor and engine's gears and bearings for speed matching, while also reducing space and cost.

[0036] Specific implementation method 2: Combination Figures 1 to 9 This embodiment further defines the transmission structure described in the first embodiment. The transmission structure of a hydraulic torque converter for a heavy-duty fuel engine described in this embodiment has a first oil inlet hole 10-1 machined on the upper end face of the front end plate 10, and a second oil inlet hole 10-2 machined on the lower end face of the front end plate 10.

[0037] Specific implementation method three: Combination Figures 1 to 9 This embodiment is described as a further limitation of the transmission structure described in the second embodiment. The transmission structure of a hydraulic torque converter for a heavy-duty gas engine described in this embodiment is characterized in that 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 This embodiment further defines the transmission structure described in the third embodiment. In this embodiment, a transmission structure of a hydraulic torque converter for a heavy-duty gas engine is described. 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 This embodiment further defines the transmission structure described in the fourth embodiment. The transmission structure of the torque converter for a heavy-duty combustion engine described in this embodiment is characterized in that the outer surface of the rear housing 13 is processed in sequence along the circumferential direction with a rear housing oil inlet hole 13-1, a rear housing oil inlet hole 13-2 and a rear housing low-pressure lubricating oil drain hole 13-3.

[0040] Specific implementation method six: combination Figures 1 to 9 This embodiment is described. This embodiment is a further limitation of the transmission structure described in the specific embodiment five. The transmission structure of the torque converter for a heavy-duty gas engine described in this embodiment is 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.

[0041] Specific implementation method seven: combination Figures 1 to 9 This embodiment is described as a further limitation of the transmission structure described in Specific Embodiment 6. In the transmission structure of a hydraulic torque converter for a heavy-duty fuel engine described in this embodiment, an axial through hole 4-1 is machined in the middle of the end face of the adapter spline shaft 4, and a radial through hole 4-2 is machined on the outer surface of one end of the adapter 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 To explain this embodiment, this embodiment is a further limitation of the transmission structure described in Specific Embodiment 7. This embodiment describes a transmission structure of a torque converter for a heavy-duty fuel engine, wherein the No. 2 oil inlet hole 10-2 is a three-way hole, and 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, and 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 To explain this embodiment, this embodiment is a further limitation of the transmission structure described in Specific Embodiment 8. This embodiment describes a transmission structure of a torque converter for a heavy-duty fuel engine, in which 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 in 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.

[0044] Specific implementation method ten: Combination Figures 1 to 9 This embodiment is described as a further limitation of the transmission structure described in Specific Embodiment 9. In this embodiment, a transmission structure of a hydraulic torque converter for a heavy-duty gas engine is described, 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 connected in series through pipes in sequence; the No. 2 middle shell oil inlet hole 12-2 is connected to the axial through hole 4-1 through a pipe.

[0045] How it works

[0046] a. After the motor starts, the front pinion 1 meshes with the front gear 2, transmitting the matched power and speed to the adapter spline shaft 4, which is connected to the pump impeller. At this point, the pump impeller's speed remains constant. When the hydraulic fluid is full, the pump impeller 5 rotates the turbine 6 and increases torque via the guide wheel 7, achieving high-torque starting at low speeds. The turbine 6 meshes with the rear gear 8 and the rear pinion 9, matching the speed and power to the engine, ultimately driving its rotation. The front pinion bearing 15, front gear bearing 16, adapter spline bearing 17, rear pinion bearing 18, and rear gear bearing 19 respectively support the front pinion 2, front gear 3, adapter spline shaft 4, rear gear 8, and rear gear 9.

[0047] b. Front housing oil inlet hole #2 (11-2) is the low-pressure lubricating oil inlet for the front chamber. This hole not only supplies oil to the front large gear bearing 16 (rear side), but also communicates with oil inlet hole #2 (10-2) through an internal housing hole. Oil inlet hole #2 (10-2) supplies oil to the front large gear bearing 15 (front side). Oil inlet hole #2 (10-2) is connected to oil inlet hole #1 (11-1) via an external oil line. Oil inlet hole #1 (11-1) supplies oil to the front small gear bearing 15 (rear side). Oil inlet hole #1 (11-1) communicates with oil inlet hole #1 (10-1) through an internal housing line. Oil inlet hole #1 (10-1) supplies oil to the front small gear bearing 15 (front side). All front chamber lubricating oil is discharged into the oil tank through front housing low-pressure lubricating oil drain hole 11-3.

[0048] c. The No. 2 rear housing oil inlet 13-2 is the low-pressure lubricating oil inlet for the rear chamber. This hole not only supplies oil to the rear end gear bearing 16 (front side) but also communicates with the No. 2 rear cover oil inlet 14-2 through a hole inside the housing. The No. 2 rear cover oil inlet 14-2 is a four-way hole that supplies oil to the rear end gear bearing 15 (rear side). It is also connected to the No. 1 rear cover oil inlet 14-1 and the No. 2 middle housing oil inlet 12-2 via external oil lines. The No. 1 rear cover oil inlet 14-1 is a four-way hole that supplies oil to the rear end pinion bearing 15 (rear side). It is also connected to the No. 1 rear cover oil inlet 13-1 and the No. 3 rear cover oil inlet 14-3 via external oil lines. The No. 1 rear cover oil inlet 13-1 is used to supply oil to the rear end pinion bearing 15 (front side), while the No. 3 rear cover oil inlet 14-3 is used to spray oil into the meshing area of ​​the rear end gear and pinion. All rear chamber lubricating oil is discharged to the oil tank from the rear shell low-pressure lubricating oil drain hole 13-3.

[0049] d. The first middle casing oil inlet hole 12-1 is for high-pressure working oil. The second middle casing oil inlet hole 12-2 is connected to the second rear cover oil inlet hole 14-2 for supplying oil to the adapter spline bearing 17. The second middle casing oil inlet hole 12-2 is connected to the axial through-hole 4-1 and radial through-hole 4-2 on the adapter spline shaft 4 for supplying oil to the splines in the engine-driven pump adapter sleeve 3 and the adapter spline shaft 4. The high-pressure working oil in the middle casing is discharged through the middle casing high-pressure working oil drain hole 12-3.

Claims

1. A transmission structure of a hydraulic torque converter for a heavy-duty combustion 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 sequentially connected from left to right, and a through hole is processed in the middle of the end surface of the front housing (11), the middle housing (12) and the rear housing (13). 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 end pinion (1) is provided on the upper portion of the inner cavity of the front housing (11), and the front end pinion (1) is meshed with the front end large gear (2). Through holes are respectively processed on the upper ends of the two opposite inner walls inside the front housing (11), and a front end pinion bearing (15) is provided inside each through hole. The two front end pinion bearings (15) are rotatably connected to the front end pinion (1) through a rotating shaft. A front end large gear bearing (16) is respectively provided on both ends of the machine-driven 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 provided between the surface and the inner wall of the two through holes of the middle shell (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 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 shell (12); a guide wheel (7) is provided on the inner wall of the middle shell (12); the guide wheel (7) is rotatably connected to the inner wall of the middle shell (12); 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); and the rear shell A rear end pinion (9) is provided on the upper portion of the inner cavity of the rear housing (13), and a through hole is respectively processed on the upper portions of the two opposite inner walls inside the rear housing (13), and a rear end pinion bearing (18) is provided inside each through hole. The two rear end pinion bearings (18) are rotatably connected to the rear end pinion (9) through a rotating shaft, and the rear end pinion (9) and the rear end large gear (8) are meshed and connected. 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). The rear end surface of the rear housing (13) is connected to the rear end plate (14) by 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 combustion 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 No. 1 front housing oil inlet hole (11-1), a No. 2 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 combustion 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 combustion 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 combustion engine according to claim 5, characterized in that: The upper portion of the end surface of the rear end plate (14) is processed with a No. 1 rear cover oil inlet hole (14-1), the lower portion of the end surface of the rear end plate (14) is processed with a No. 2 rear cover oil inlet hole (14-2), and the middle portion of the 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 combustion 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), and a radial through hole (4-2) is machined on the outer surface of one end of the transfer spline shaft (4). The axial through hole (4-1) and the radial through hole (4-2) are connected.

8. The transmission structure of a hydraulic torque converter for a heavy-duty combustion engine according to claim 7, characterized in that: 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 plate (10) are respectively connected to 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). The other hole of the second oil inlet hole (10-2) is connected to 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 combustion 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. 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 combustion 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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