High-strength output shaft assembly for heavy-duty starter

Abstract

The utility model relates to an output shaft, in particular to a high-strength output shaft assembly for a heavy-duty starter, which comprises an output shaft, a shaft pin, a needle bearing and a gasket, the needle bearing is arranged in an inner cavity of a butt joint end of the output shaft, the shaft pin is fixedly connected at the end of the output shaft, and the inner cavity of the butt joint end of the output shaft is in a groove shape. A rubber gasket is arranged in the groove, and a round corner is arranged at the position of the groove and the outer circle step. The groove bottom of the inner cavity of the output shaft is arranged to be in a groove shape, the stress area is larger, the wall thickness is correspondingly increased, meanwhile, the groove and the outer circle step of the output shaft are arranged to be filleted corners, the stress bearing capacity of the end of the output shaft is improved, a traditional steel ball is changed into a gasket with the larger stress area, and the service life of the gasket is prolonged. And the continuous action caused by the rotating speed or engine vibration in the operation of the output shaft is effectively reduced.

Description

Technical Field

[0001] The utility model relates to an output shaft, in particular to a high-strength output shaft assembly for a heavy-duty starter. Background Art

[0002] A heavy-duty starter is a device used to start heavy equipment or engines. The output shaft of a heavy-duty starter is one of its key components, with important functions such as transmitting power, controlling speed, and achieving precision movement. In a heavy-duty starter, the role of the output shaft is particularly prominent because it needs to withstand greater torque and load to ensure that the engine can start smoothly.

[0003] The main function of the output shaft is to transfer the power generated by the motor to the crankshaft of the engine to start the engine. In the process of transmitting power, the output shaft needs to accurately control its speed and direction of movement to ensure that the engine can start and run smoothly. In addition, the output shaft also needs to have sufficient strength and durability to cope with harsh working environments and high-load operation requirements.

[0004] Most of the existing medium and large starter output shafts use a U-shaped groove structure as the inner cavity. This structure has a thin bottom of the inner groove and a small stress-bearing surface between the outer wall of the output shaft. In addition, the steel balls are squeezed in the inner cavity. The starter equipped with this output shaft structure has many ignition and starting times in the car. After running for a long time, the risk of output shaft breakage will greatly increase over time. Utility Model Content

[0005] In order to overcome the disadvantage that the inner cavity of the output shaft of the existing medium and large starter adopts a U-shaped groove structure, which has the risk of fracture, the utility model provides a high-strength output shaft assembly for a heavy-duty starter.

[0006] A high-strength output shaft assembly for a heavy-duty starter includes an output shaft, an axle pin and a needle bearing. The inner cavity of the output shaft butt end is provided with a needle bearing, the axle pin is fixedly connected to the end of the output shaft, and also includes a gasket. The inner cavity of the output shaft butt end is opened into a groove shape, a rubber gasket is built in the groove, and fillets are set at the positions of the groove and the outer circle step.

[0007] As a further preferred solution, a storage shell is also included, the shell is composed of two parts that are hinged and rotatably assembled, and the shell cover is arranged outside the output shaft.

[0008] As a further preferred solution, a filling foam embedded in the output shaft is provided in the housing.

[0009] As a further preferred solution, it also includes a fixing plate and bolts, a protruding fixing plate is provided at the joint of the shell, and the fixing plate on the opposite side is fixed by bolts.

[0010] As a further preferred solution, the housing is provided with a handle.

[0011] As a further preferred solution, a buffer pad is also included, and an annular buffer pad is arranged inside the shell.

[0012] As a further preferred solution, supporting feet are provided at the bottom of the housing.

[0013] As a further preferred solution, the bottom of the supporting foot is provided with an anti-slip pad.

[0014] The utility model has the following advantages: the bottom of the inner groove of the output shaft is set to a groove shape, the force-bearing area is larger, and the wall thickness is correspondingly increased; at the same time, the output shaft groove and the outer circle step position are set to rounded corners, which improves the stress bearing capacity of the output shaft end; the traditional steel ball is replaced by a washer with a larger force-bearing area, which effectively reduces the continuous effect caused by the rotation speed or engine vibration during the operation of the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the output shaft of the utility model.

[0016] Figure 2 It is a three-dimensional structural cross-sectional view of the output shaft of the utility model.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the shell of the utility model.

[0018] Figure 4 It is a three-dimensional structural cross-sectional view of the housing and the output shaft of the utility model.

[0019] The reference numbers in the figure are: 1-output shaft, 2-axle pin, 3-needle bearing, 4-washer, 5-fillet, 6-housing, 7-fixing plate, 8-bolt, 9-handle, 10-buffer pad, 11-support foot, 12-anti-slip pad. DETAILED DESCRIPTION

[0020] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the parts in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.

[0021] Embodiment: A high-strength output shaft assembly for a heavy-duty starter, such as Figure 1-Figure 4As shown, it includes an output shaft 1, an axle pin 2 and a needle bearing 3. A docking hole is opened at the docking end of the output shaft 1, and a needle bearing 3 is arranged in the docking hole. The axle pin 2 is fixedly connected to the end of the output shaft 1, and also includes a gasket 4. The inner cavity of the docking end of the output shaft 1 is opened in a groove shape, and a rubber gasket 4 is built in the groove. A fillet 5 is arranged at the position of the groove and the outer circle step. The inner cavity of the docking end of the output shaft 1 is opened in a groove shape. Compared with the traditional U-shaped groove structure, the force-bearing area is larger and the wall thickness is correspondingly increased. The fillet 5 can disperse the stress, reduce the wear and damage of the end of the output shaft 1, improve the durability and safety, and reduce the maintenance cost at the same time. The traditional steel ball is replaced by a gasket 4 with a larger force-bearing area, which effectively reduces the continuous effect of the output shaft 1 caused by the rotation speed or engine vibration during operation.

[0022] like Figure 3 and Figure 4 As shown, a storage shell 6 is also included. The shell 6 is composed of two parts that are hinged and rotated. The shell 6 is covered on the outside of the output shaft 1. The output shaft 1 is stored and transported using the shell 6. A handle 9 is arranged on the top of the shell 6. A filling foam embedded in the output shaft 1 is provided in the shell 6. The filling foam protects the output shaft 1.

[0023] like Figure 3 As shown, a fixing plate 7 and bolts 8 are provided at the joint of the housing 6 with a protruding fixing plate 7 , and the fixing plate 7 on the opposite side is fixed by bolts 8 .

[0024] like Figure 4 As shown, a buffer pad 10 is also included. An annular buffer pad 10 is arranged in the outer shell 6 , and the buffer pad 10 improves the fixing effect of the output shaft 1 .

[0025] like Figure 3 As shown, a support foot 11 is provided at the bottom of the housing 6 , and the support foot 11 can be rotated to adjust the height. The housing 6 can be quickly leveled through the support foot 11 , and an anti-slip pad 12 is configured at the bottom of the support foot 11 .

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-strength output shaft assembly for a heavy-duty starter, comprising an output shaft (1), a shaft pin (2) and a needle bearing (3), wherein the inner cavity of the butt end of the output shaft (1) is provided with a needle bearing (3), and the shaft pin (2) is fixedly connected to the end of the output shaft (1), characterized in that: It also includes a gasket (4); the bottom of the inner cavity groove of the butt end of the output shaft (1) is configured in a groove shape, the groove has a rubber gasket (4) built in it, and a rounded corner (5) is provided at the position of the groove and the outer circle step.

2. A high-strength output shaft assembly for a heavy-duty starter according to claim 1, characterized in that: It also includes a storage housing (6), which is arranged outside the output shaft (1).

3. A high-strength output shaft assembly for a heavy-duty starter according to claim 2, characterized in that: The housing (6) is provided with filling foam which is embedded in the output shaft (1).

4. A high-strength output shaft assembly for a heavy-duty starter according to claim 3, characterized in that: It also includes a fixing plate (7) and bolts (8); a protruding fixing plate (7) is provided at the joint of the housing (6), and the fixing plate (7) on the opposite side is fixed by the bolts (8).

5. A high-strength output shaft assembly for a heavy-duty starter according to claim 4, characterized in that: The housing (6) is provided with a handle (9).

6. A high-strength output shaft assembly for a heavy-duty starter according to claim 5, characterized in that: It also includes a buffer pad (10), and an annular buffer pad (10) is arranged inside the outer shell (6).

7. A high-strength output shaft assembly for a heavy-duty starter according to claim 6, characterized in that: A supporting foot (11) is provided at the bottom of the housing (6).

8. A high-strength output shaft assembly for a heavy-duty starter according to claim 7, characterized in that: The bottom of the supporting foot (11) is provided with an anti-skid pad (12).

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