A high-power hydraulic starting motor device

Abstract

The present invention discloses a high-power hydraulic starting motor device, including: a hydraulic motor, a conversion shaft assembly, a buffer spring, a torque clutch, a transmission shaft assembly, a gear, a connecting plate and an SAE flange shield, wherein the connecting plate is open at both ends and hollow inside, one end of the connecting plate is fixedly connected to the hydraulic motor, and the other end of the connecting plate is fixedly connected to the SAE flange shield, and the conversion shaft assembly, the buffer spring, the torque clutch and the transmission shaft assembly are sequentially combined and arranged in the connecting plate and the SAE flange shield. The present invention provides an axial buffer spring between the conversion shaft and the transmission shaft, which plays an axial buffering role through the expansion and contraction of the buffer spring; and the torque clutch working in a semi-clutch state plays a radial buffering role; a bearing is provided on the conversion shaft, which is used together with a needle bearing to ensure coaxiality; the bearing divides the internal cavity of the connecting plate into a first cavity and a second cavity, and plays a secondary seal for the hydraulic motor.

Description

Technical Field

[0001] The invention relates to a hydraulic starting device, in particular to a high-power hydraulic starting motor device. Background Art

[0002] At present, the engine start-up in working conditions such as oil and gas fields generally adopts hydraulic or pneumatic starting devices, which first convert pressure energy into mechanical energy, and then drive the gears in the starting device to mesh with the flywheel of the engine, so that the engine starts to work. In the starting device of a low-power engine, the motor of the power source usually directly drives the gear to mesh with the flywheel, without axial and radial buffering. This method is not suitable for high-power engines. The static torque of the flywheel of a high-power engine is much greater than that of a small engine. The starting device needs to use a high-power motor. The high-speed rotating gear and the stationary engine flywheel have a process of collision, bite and complete meshing. At this time, the axial impact force is large and the radial resistance is very large. When the gear is disengaged, a large axial impact force in the opposite direction will also be generated. Therefore, if a rigid connection is used, the gear may bite, top teeth, and teeth may be hit when it meshes with the flywheel of the engine; multi-directional impact and vibration will be generated during operation. In the long run, it may cause the teeth of the gears and flywheels to collapse, and some parts to loosen and deform. The life of the engine and the starting device will be greatly reduced.

[0003] Some existing high-power hydraulic starting motor devices have radial buffering, such as adding a torsion spring between the power shaft and the transmission shaft; some have an over-torque protection device that releases the power source after the top gear to avoid further damage. Summary of the invention

[0004] In order to overcome the shortcomings of related products in the prior art, the present invention proposes a high-power hydraulic starting motor device to solve the problem of excessive axial and radial impact during the meshing process of gears and flywheels in the prior art, as well as technical problems such as oil leakage, poor coaxiality, rearward center of gravity of the product, and the need for rotation during different installation applications that occur during the implementation process.

[0005] The present invention provides a high-power hydraulic starting motor device, comprising: a hydraulic motor, a conversion shaft assembly, a buffer spring, a torque clutch, a transmission shaft assembly, a gear, a connecting plate and an SAE flange shield. The connecting plate is an internal hollow structure with two ends open, one end of the connecting plate is fixedly connected to the hydraulic motor, and the other end of the connecting plate is fixedly connected to the SAE flange shield, the conversion shaft assembly, the buffer spring, the torque clutch and the transmission shaft assembly are sequentially combined and arranged in the connecting plate and the SAE flange shield, one end of the conversion shaft assembly is sleeved on the output end of the hydraulic motor, and the other end of the conversion shaft assembly is fixedly connected to the torque clutch, a vertical shaft hole is passed through the middle of the torque clutch, and the transmission shaft assembly is plugged into the other end of the torque clutch, the buffer spring is arranged between the conversion shaft assembly and the transmission shaft assembly, the gear is sleeved on the transmission shaft assembly, the flywheel is arranged on one side of the gear, and the gear is meshed with the flywheel, and the end of the transmission shaft assembly away from the torque clutch passes through the connecting plate and extends outward to the top of the SAE flange shield.

[0006] In certain embodiments of the present invention, the conversion shaft assembly includes a conversion shaft and a bearing, one end of the conversion shaft is sleeved on the output end of the hydraulic motor, the other end of the conversion shaft is fixedly connected to the torque limiter torque clutch, the bearing is sleeved on the conversion shaft, the bearing is vertically fixed in the middle of the inner part of the connecting plate, and the other end of the torque limiter torque clutch is plugged with the transmission shaft assembly.

[0007] In certain embodiments of the present invention, the transmission shaft assembly includes a transmission shaft and a needle bearing, one end of the transmission shaft is fixedly connected to the torque clutch, the gear is sleeved on the transmission shaft, the other end of the transmission shaft passes through the connecting plate and extends outward to the top of the SAE flange shield, the end of the transmission shaft close to one end of the SAE flange shield is sleeved with the needle bearing, the needle bearing is fixed on the SAE flange shield, and the needle bearing and the bearing are coaxially arranged.

[0008] In certain embodiments of the present invention, the buffer spring is disposed between the conversion shaft and the transmission shaft, one end of the buffer spring is supported on the conversion shaft, and the other end of the buffer spring is supported on the transmission shaft.

[0009] In certain embodiments of the present invention, the SAE flange shield is hollowed out, a through hole is provided at the top end of the SAE flange shield, the needle bearing is arranged in the through hole, the bottom end of the SAE flange shield is fixedly connected to the connecting disk, the end of the bottom end of the SAE flange shield is provided with a guide boss extending toward the connecting disk, a plurality of countersunk holes are provided at the bottom end of the SAE flange shield, and a plurality of internal threaded holes of the same number are correspondingly provided on the connecting disk.

[0010] In certain embodiments of the present invention, the outer diameter of the guide boss matches the inner diameter of the connecting disk, and the height of the guide boss is greater than 10 mm.

[0011] In certain embodiments of the present invention, the outer wall of the bearing and the inner wall of the connecting plate are tightly fitted, and the internal cavity of the connecting plate is divided into a first cavity and a second cavity by the bearing, the first cavity is close to the hydraulic motor, and the second cavity is close to the SAE flange cover, the conversion shaft is arranged in the first cavity, and the buffer spring, the torque clutch and the transmission shaft are sequentially combined and installed in the second cavity, and the end of the transmission shaft away from the buffer spring passes through the second cavity and extends outward.

[0012] In certain embodiments of the present invention, a flat key is provided at one end of the conversion shaft connected to the torque clutch, and a keyway is provided in the shaft hole of the torque clutch at one end facing the conversion shaft. One end of the conversion shaft is extended into the shaft hole of the torque clutch so that the semicircular key is inserted into the keyway, and the conversion shaft is fastened to the torque clutch by a set screw.

[0013] In certain embodiments of the present invention, a plurality of retaining springs are disposed between the conversion shaft and the connecting disk.

[0014] In certain embodiments of the present invention, a rectangular spline is provided at one end of the transmission shaft connected to the torque clutch, and a rectangular spline inner hole is provided in the shaft hole of the torque clutch at one end facing the transmission shaft.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. An axial buffer spring is provided between the conversion shaft (power source, fixed on the connecting plate) and the transmission shaft (slightly retractable in the axial direction). When the gear moves along the spiral line of the transmission shaft and hits the flywheel, the expansion and contraction of the buffer spring plays an axial buffering role; when the start is successfully disengaged, it can also buffer in the opposite direction.

[0017] 2. A torque clutch is provided between the conversion shaft and the transmission shaft to act as a radial buffer. The torque clutch is a multi-friction plate coupling structure. For each engine, the pre-pressure is carefully adjusted so that it mainly works in a semi-clutch state. Each time the engine is started, the gear rotates at high speed and swings toward the engine flywheel for meshing. The semi-clutch state can reduce the speed difference and impact force between the gear and the flywheel, so that the flywheel rotates slowly and then accelerates; the appropriate friction sequence also determines the number of friction circles and the successful start time.

[0018] 3. A bearing is provided on the conversion shaft, and the bearing is used together with the needle bearing to ensure coaxiality. In the case of no motor installed, by manually rotating the gear on the gear assembly to drive the coupling and the conversion shaft to rotate, it can be clearly judged whether there is a rotation jam phenomenon to verify whether the coaxiality of the entire transmission mechanism is good;

[0019] 4. The bearing divides the internal cavity of the connecting plate into a first cavity and a second cavity. The first cavity is sealed by suitable size matching and adding a sealing gasket, which can effectively solve the problem that the sealing effect of the hydraulic motor is reduced due to working time and working environment, resulting in slight leakage of hydraulic oil from the hydraulic motor. The first cavity can play a good secondary sealing role for the hydraulic motor, and the second cavity can play a good protective role for the components placed therein;

[0020] 5. The end of the bottom end of the SAE flange shield is provided with a guide boss extending toward the connecting disk, which is inserted into the connecting disk. The two have only a few threads of tolerance to ensure the coaxiality of the main structure of the starting device, thereby ensuring the coaxiality of the needle bearing and the bearing on the conversion shaft. In addition, the starting motor device is installed on the engine through the mounting hole of the SAE flange. In this way, the center of gravity of the starter is biased to the rear. If only screws are used to connect the connecting disk and the SAE flange, these screws will be unevenly stressed. After individual screws are loosened, the tail of the starting device is prone to slight droop. The guide boss is larger than 10cm and overlaps the connecting disk long enough to assist in bearing the impact force from top to bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 An exploded view of the high-power hydraulic starting motor device of the present invention;

[0023] Figure 2It is a schematic diagram of the overall structure of the high-power hydraulic starting motor device of the present invention;

[0024] Figure 3 It is a cross-sectional view of the high-power hydraulic starting motor device described in the present invention.

[0025] Description of reference numerals:

[0026] 1-hydraulic motor, 2-conversion shaft assembly, 21-conversion shaft, 22-bearing, 3-buffer spring, 4-torque clutch, 5-transmission shaft assembly, 51-transmission shaft, 52-needle bearing, 6-gear, 7-flywheel, 8-connecting plate, 81-first cavity, 82-second cavity, 9-SAE flange shield, 91-through hole, 92-guide boss, 10-circlip. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments, and the preferred embodiments of the present invention are shown in the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0028] See also Figure 1-3As shown, the high-power hydraulic starting motor device includes a hydraulic motor 1, a conversion shaft assembly 2, a buffer spring 3, a torque clutch 4, a transmission shaft assembly 5, a gear 6, a connecting plate 8 and a SAE flange shield 9. The connecting plate 8 is a hollow structure with two ends open inside. One end of the connecting plate 8 is fixedly connected to the hydraulic motor 1, and the other end of the connecting plate 8 is fixedly connected to the SAE flange shield 9. The conversion shaft assembly 2, the buffer spring 3, the torque clutch 4 and the transmission shaft assembly 5 are sequentially combined and arranged in the connecting plate 8. One end of the conversion shaft assembly 2 is sleeved on the output end of the hydraulic motor 1, and the other end of the conversion shaft assembly 2 is fixedly connected to the torque clutch 4. A vertical axial hole runs through the middle of 4, the other end of the torque clutch 4 is inserted with the transmission shaft assembly 5, the buffer spring 3 is arranged between the conversion shaft assembly 2 and the transmission shaft assembly 5, one end of the buffer spring 3 is supported on the conversion shaft assembly 2, and the other end of the buffer spring 3 is supported on the transmission assembly 5, and an axial buffering effect is played through the expansion and contraction of the buffer spring 4, the transmission shaft assembly 5 is sleeved with the gear 6, and a flywheel 7 of the engine is arranged on one side of the gear 6, and the gear 6 is meshed with the flywheel 7, and the end of the transmission shaft assembly 5 away from the torque clutch 4 passes through the connecting disk 8 and extends outward to the top of the SAE flange shield 9.

[0029] The conversion shaft assembly 2 includes a conversion shaft 21 and a bearing 22. One end of the conversion shaft 21 is sleeved on the output end of the hydraulic motor 1, and the other end of the conversion shaft 21 is fixedly connected to the torque clutch 4. The bearing 22 is sleeved on the conversion shaft 21, and the bearing 22 is vertically fixed in the middle of the inner part of the connecting disk 8. The conversion shaft 21 is fixedly installed in the inner part of the connecting disk 8 by the bearing 22. One end of the conversion shaft 21 extends into the shaft hole of the torque clutch 4 toward the torque clutch 4 and is fixedly connected to the torque clutch 4. The transmission shaft assembly 5 is inserted into the shaft hole at the other end of the torque clutch 4.

[0030] In an embodiment of the present invention, a flat key is provided at one end of the conversion shaft 21 connected to the torque clutch 4, and a keyway is provided in the shaft hole of the torque clutch 4 facing one end of the conversion shaft 21. One end of the conversion shaft 21 is inserted into the shaft hole of the torque clutch 4 so that the semicircular key is inserted into the keyway, and the conversion shaft 21 is fastened to the torque clutch 4 by a set screw.

[0031] In the embodiment of the present invention, a plurality of retaining springs 10 are disposed between the conversion shaft 21 and the connecting disk 8 , and the retaining springs 10 are used to prevent the conversion shaft 21 from axial movement.

[0032] The transmission shaft assembly 5 includes a transmission shaft 51 and a needle bearing 52. One end of the transmission shaft 51 is fixedly connected to the torque clutch 4. The transmission shaft 51 is sleeved with the gear 6, and the gear 6 is arranged around the transmission shaft 51. The other end of the transmission shaft 51 passes through the connecting plate 8 and extends outward to the top of the SAE flange shield 9. The end of the transmission shaft 51 close to one end of the SAE flange shield 9 is sleeved with the needle bearing 52, and the needle bearing 52 is fixed on the SAE flange shield 9. The needle bearing 52 and the bearing 22 are coaxially arranged, and the needle bearing 52 plays a radial buffering role. The gear (6 ) rotates toward the needle bearing (52) and meshes with the engine flywheel (7). At the same time, the needle bearing 52 cooperates with the bearing 22 to ensure the coaxiality of the entire device, which can effectively prevent the flywheel from breaking due to coaxiality difference during the meshing process of the gear 6 and the flywheel 7 when the hydraulic motor 1 is started. At the same time, when the hydraulic motor 1 is not started, the gear on the gear 6 can be manually rotated, and the gear 6 drives the torque clutch 4 and the torque clutch 4 synchronously drives the conversion shaft 21 to rotate, so as to detect whether the entire device is flexible and has no jamming phenomenon to verify whether the coaxiality of the entire transmission structure is good.

[0033] In an embodiment of the present invention, a rectangular spline is provided at one end of the transmission shaft 51 connected to the torque clutch 4, and a rectangular spline inner hole is provided in the shaft hole of the torque clutch 4 at one end facing the transmission shaft 51, and one end of the transmission shaft 51 is extended into the shaft hole of the torque clutch 4 so that the rectangular spline is inserted into the rectangular spline inner hole, and a fastener is provided between the transmission shaft 51 and the torque clutch 4, one end of the fastener is fixedly connected to the transmission shaft, and the other end of the fastener is fixedly connected to the torque limiter, and the transmission shaft 51 is fastened to the torque clutch 4 through the fastener.

[0034] The buffer spring 3 is arranged between the conversion shaft 21 and the transmission shaft 51, and one end of the buffer spring 3 is supported on the conversion shaft 21, and the other end of the buffer spring 3 is supported on the conversion shaft 21. Through the synchronous cooperation between the buffer spring 3 and the torque clutch 4 outside it, the axial and radial impacts on the gear 6 during the meshing process with the flywheel 7 can be effectively alleviated, and the axial and radial impact forces when the gear on the gear 6 is thrown off from the flywheel 7 during the gear disengagement process can be alleviated, thereby preventing the impact force from acting on the hydraulic motor 1, causing damage to the hydraulic motor 1 and affecting its output torque.

[0035] The SAE flange shield 9 is hollowed out, a through hole 91 is provided at the top end of the SAE flange shield 9, the needle bearing 52 is arranged in the through hole 91, the bottom end of the SAE flange shield 9 is fixedly connected to the connecting disk 8, and a guide boss 92 extending toward the connecting disk 8 is provided at the bottom end of the SAE flange shield 9. When the SAE flange shield 9 is connected to the connecting disk 8, the guide boss 92 is guided and inserted into the connecting disk 8 to ensure the coaxiality of the needle bearing 52 and the bearing 22. A plurality of countersunk holes are provided at the bottom end of the SAE flange shield 9, and a plurality of threaded holes corresponding thereto are correspondingly provided on the connecting disk 8. Countersunk screws are sequentially passed through the countersunk holes provided on the SAE flange shield 9 and the threaded holes provided on the connecting disk 8, and the relative positions of the SAE flange shield 9 and the connecting disk 8 are locked by tightening the countersunk screws. When the installation angle needs to be adjusted, it can be easily achieved by rotating the SAE flange shield 9.

[0036] In the embodiment of the present invention, six countersunk screws are provided, and the six countersunk screws are evenly arranged on the SAE flange cover 9 .

[0037] In the embodiment of the present invention, the outer diameter of the guide boss 92 is slightly smaller than the inner diameter of the connecting disk 8, so that the guide boss 92 matches the inner diameter of the connecting disk 8 to ensure the accuracy of assembly. The height of the guide boss 92 is greater than 10 mm. When it is assembled with the connecting disk 8, the problem of the motor tail end sagging caused by vibration when the hydraulic starting motor device is working can be avoided.

[0038] In the embodiment of the present invention, the outer wall of the bearing 22 and the inner wall of the connecting plate 8 are closely fitted, and the inner cavity of the connecting plate 8 is divided into a first cavity 81 and a second cavity 82 by the bearing 22. The first cavity 81 is close to the hydraulic motor 1, and the second cavity 82 is close to the SAE flange shield 9. The conversion shaft 21 is arranged in the first cavity 81, and the buffer spring 3, the torque clutch 4 and the transmission shaft 51 are sequentially assembled and installed in the second cavity 82. The end of the transmission shaft 51 away from the buffer spring 3 passes through the second cavity 82 and extends outward. Through the first cavity 81, the problem that the sealing effect of the hydraulic motor 1 is reduced due to working time and working environment, resulting in leakage of hydraulic oil, can be effectively solved. The first cavity 81 can play a good secondary sealing role for the hydraulic motor.

[0039] The specific working principle of the high-power hydraulic starting motor device of the present invention is as follows:

[0040] The hydraulic station provides pressurized working oil to enter the hydraulic motor 1, and the hydraulic motor 1 converts pressure energy into mechanical energy, and drives the conversion shaft 21 connected thereto to rotate through its output shaft. The conversion shaft 21 synchronously drives the torque clutch 4 and the transmission shaft 51 connected thereto to rotate, and the gear on the gear 6 moves forward along the spiral line on the transmission shaft 51 and meshes with the flywheel 7 of the engine, driving the flywheel 7 to rotate and igniting the engine unit. After the engine stops working, the gear is disengaged from the flywheel 7 by utilizing the speed difference between the flywheel 7 and the gear.

[0041] In the embodiment of the present invention, the conversion shaft 21 is arranged between the hydraulic motor 1 and the torque clutch 4, and the transmission shaft 51 is connected to the other end of the torque clutch 4. The other end of the transmission shaft 51 is sleeved with a needle bearing 52 and extends into the through hole 91 of the SAE flange cover 9 to ensure the coaxiality of the entire hydraulic starting motor device. At the same time, the buffer spring 3 is arranged between the conversion shaft 21 and the transmission shaft 51. The expansion and contraction of the buffer spring 3 plays a good axial buffering role, effectively reducing the impact force of the gear on the gear 6 when it is separated from the flywheel 7 and directly acting on the hydraulic motor 1, thereby extending the service life of the hydraulic motor 1. At the same time, the bearing 22 divides the internal cavity of the connecting plate 8 into a first cavity 81 and a second cavity 82. The first cavity 81 can effectively solve the problem of working oil leakage caused by the hydraulic motor 1 due to factors such as working time or working environment. At the same time, the second cavity 82 can play a good protective role for the components placed therein.

[0042] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. The above are only embodiments of the present invention, but do not limit the patent scope of the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the aforementioned specific implementation methods, or replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the present specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A high-power hydraulic starting motor device, characterized in that: include: A hydraulic motor (1), a conversion shaft assembly (2), a buffer spring (3), a torque clutch (4), a transmission shaft assembly (5), a gear (6), a connecting plate (8) and a SAE flange shield (9), wherein the connecting plate (8) is a hollow structure with two ends open inside, one end of the connecting plate (8) is fixedly connected to the hydraulic motor (1), and the other end of the connecting plate (8) is fixedly connected to the SAE flange shield (9), the conversion shaft assembly (2), the buffer spring (3), the torque clutch (4) and the transmission shaft assembly (5) are sequentially combined and arranged in the connecting plate (8) and the SAE flange shield (9), one end of the conversion shaft assembly (2) is sleeved on the output end of the hydraulic motor (1), and the The other end of the conversion shaft assembly (2) is fixedly connected to the torque clutch (4), a vertical shaft hole is passed through the middle of the torque clutch (4), the other end of the torque clutch (4) is plugged with the transmission shaft assembly (5), the buffer spring (3) is arranged between the conversion shaft assembly (2) and the transmission shaft assembly (5), the gear (6) is sleeved on the transmission shaft assembly (5), a flywheel (7) of the engine is arranged on one side of the gear (6), the gear (6) is meshedly connected with the flywheel (7), and the end of the transmission shaft assembly (5) away from the torque clutch (4) passes through the connecting plate (8) and extends outward to the top of the SAE flange shield (9); The conversion shaft assembly (2) comprises a conversion shaft (21) and a bearing (22), one end of the conversion shaft (21) is sleeved on the output end of the hydraulic motor (1), the other end of the conversion shaft (21) is fixedly connected to the torque clutch (4), the bearing (22) is sleeved on the conversion shaft (21), the bearing (22) is vertically fixed in the middle of the connecting plate (8), the other end of the torque clutch (4) is plugged with the transmission shaft assembly (5), the transmission shaft assembly (5) comprises a transmission shaft (51) and a needle roller bearing (5 2), one end of the transmission shaft (51) is fixedly connected to the torque clutch (4), the gear (6) is sleeved on the transmission shaft (51), the other end of the transmission shaft (51) passes through the connecting plate (8) and extends outward to the top of the SAE flange shield (9), the end of the transmission shaft (51) close to one end of the SAE flange shield (9) is sleeved with the needle bearing (52), the needle bearing (52) is fixed on the SAE flange shield (9), and the needle bearing (52) and the bearing (22) are coaxially arranged; The SAE flange shield (9) is hollowed out, a through hole (91) is provided at the top end of the SAE flange shield (9), the needle bearing (52) is arranged in the through hole (91), the bottom end of the SAE flange shield (9) is fixedly connected to the connecting plate (8), the bottom end of the SAE flange shield (9) is provided with a guide boss (92) extending toward the connecting plate (8), the outer diameter of the guide boss (92) matches the inner diameter of the connecting plate (8), the height of the guide boss (92) is greater than 10 mm, the outer wall of the bearing (22) and the connecting plate (8) are connected to each other. ), the inner wall of the connecting plate (8) is tightly fitted, the inner cavity of the connecting plate (8) is divided into a first cavity (81) and a second cavity (82) by the bearing (22), the first cavity (81) is close to the hydraulic motor (1), and the second cavity (82) is close to the SAE flange shield (9), the conversion shaft (21) is arranged in the first cavity (81), the buffer spring (3), the torque clutch (4) and the transmission shaft (51) are sequentially assembled and installed in the second cavity (82), and one end of the transmission shaft (51) away from the buffer spring (3) passes through the second cavity (82) and extends outward.

2. The high-power hydraulic starting motor device according to claim 1 is characterized in that: The buffer spring (3) is arranged between the conversion shaft (21) and the transmission shaft (51), one end of the buffer spring (3) is supported on the conversion shaft (21), and the other end of the buffer spring (3) is supported on the transmission shaft (51).

3. The high-power hydraulic starting motor device according to claim 1 is characterized in that: One end of the conversion shaft (21) connected to the torque clutch (4) is provided with a flat key, and a keyway is provided in the shaft hole of the torque clutch (4). One end of the conversion shaft (21) extends into the shaft hole of the torque clutch (4), and the conversion shaft (21) is fastened to the torque clutch (4) by a set screw.

4. The high-power hydraulic starting motor device according to claim 1 is characterized in that: A plurality of retaining springs (10) are arranged between the conversion shaft (21) and the connection disk (8).

5. The high-power hydraulic starting motor device according to claim 1 is characterized in that: One end of the transmission shaft (51) connected to the torque clutch (4) is provided with a rectangular spline, and a rectangular spline inner hole is provided in the shaft hole of the end of the torque clutch (4) facing the transmission shaft (51).

Images