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Variable cross-section planetary pin shaft and planetary transmission mechanism

A variable cross-section and pin shaft technology, which is applied to the transmission device, transmission device parts, gear transmission device, etc., can solve the problem of uneven load distribution along the tooth direction of the planetary gear, so as to improve uneven load distribution, reduce plastic deformation, and improve The effect of applicability

Pending Publication Date: 2021-02-26
NANJING HIGH SPEED GEAR MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] An object of the present invention is to provide a variable cross-section planetary pin shaft, which can eliminate the deflection of the pin shaft, improve the problem of uneven load distribution of the planetary gear along the tooth direction caused by the tilt of the pin shaft, and extend the length of the planetary gear set on the pin shaft. service life

Method used

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  • Variable cross-section planetary pin shaft and planetary transmission mechanism
  • Variable cross-section planetary pin shaft and planetary transmission mechanism
  • Variable cross-section planetary pin shaft and planetary transmission mechanism

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0033] This embodiment provides a planetary transmission mechanism, such as figure 2 As shown, it includes a planetary carrier 1 and a pin shaft 5 connected to the planetary carrier 1, a bearing 2 is sleeved on the pin shaft 5, and a planetary wheel 3 is sleeved on the bearing 2; specifically, the pin shaft 5 is relatively provided with Two bearings 2, a spacer ring 4 is arranged between the two bearings 2 to ensure that the two bearings 2 are respectively abutted against the two end faces of the planet carrier 1, and the distance ring 4 can be installed according to the installation distance of the planet carrier 1 and The width of the bearing 2 is set; the two ends of the pin shaft 5 are respectively the motor side and the blade side, specifically, one end of the pin shaft 5 is provided with a motor, and the other end is provided with a blade, the specific connection mode between the pin shaft 5 and the motor side and The connection mode between the pin shaft 5 and the blad...

Embodiment 2

[0043] Such as Figure 5 As shown, this embodiment provides a planetary pin with variable cross-section, and the overall structure of the planetary pin with variable cross-section provided in this embodiment is basically the same as the planetary pin with variable cross-section in Embodiment 1, and the structure of the variable-section hole 51 There are differences, and this embodiment will not repeat the same structure as that of the first embodiment.

[0044] The difference between this embodiment and the first embodiment is that the variable cross-section hole 51 is a stepped hole, and the variable cross-section hole 51 is a blind hole, and the variable cross-section hole 51 is provided on the side close to the pin shaft 5 on the blade side. Specifically, the stepped hole includes a first hole portion 511 and a second hole portion 512 opened in sequence, wherein, D1>D2; specifically, the diameter of the pin shaft 5 is D, D>D1≥D2≥0.5D, which can meet the requirements of use ...

Embodiment 3

[0046] This embodiment provides a variable cross-section planetary pin, and the overall structure of the variable cross-section planetary pin provided by this embodiment is basically the same as that of the variable cross-section planetary pin in Embodiment 1, and the structure of the variable cross-section hole 51 is different. In this embodiment, the same structure as that in Embodiment 1 will not be repeated.

[0047] The difference between this embodiment and Embodiment 1 is that the variable cross-section hole 51 is in the shape of a tapered hole or a horn-shaped hole, and the diameter of the variable cross-section hole 51 near the blade side is larger than the diameter of the variable cross-section hole 51 near the motor side. Specifically, The variable cross-section hole 51 can be a through hole or a blind hole, as long as the aperture size of the pin shaft 5 near the blade side is larger than the aperture size of the motor side, so that the stiffness of the pin shaft 5 ...

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Abstract

The invention discloses a variable cross-section planetary pin shaft and a planetary transmission mechanism, and belongs to the technical field of mechanical transmission. The variable cross-section planet pin shaft is connected to a planet carrier, the pin shaft is sleeved with a bearing, the bearing is sleeved with a planet wheel, the two ends of the pin shaft are a motor side and a blade side respectively, and a variable cross-section hole is formed in the pin shaft in the axial direction, so that the rigidity of the pin shaft close to the blade side is smaller than that of the pin shaft close to the motor side. The planetary transmission mechanism comprises the variable cross-section planetary pin shaft. According to the variable cross-section planetary pin shaft and the planetary transmission mechanism, the variable cross-section hole is formed in the pin shaft close to the blade side, so that the pin shaft is prevented from deflecting, the problem of uneven load distribution of the planet wheel in the tooth direction due to inclination of the pin shaft is solved, and the service life of the planet wheel arranged on the pin shaft is prolonged.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission, in particular to a variable-section planetary pin shaft and a planetary transmission mechanism. Background technique [0002] The planetary transmission mechanism has been widely used due to its advantages of large coaxial output speed ratio, small size and strong bearing capacity. The planetary carrier is one of the main force transmission components of the planetary gear train, which connects the planetary gears through pin shafts and bearings, such as figure 1 As shown, the planetary transmission mechanism includes a planetary carrier 1' and a pin shaft 5' connected to the planetary carrier 1'. The pin shaft 5' is sleeved with two bearings 2' and is arranged between the two bearings 2'. The spacer ring 4', the bearing 2' is provided with a planetary wheel 3', one end of the pin shaft 5' is provided with a motor, and the other end is provided with a blade. In the loaded state,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/08F16H1/28
CPCF16H57/08F16H1/2809
Inventor 王红丁文祥范世荣熊永强
Owner NANJING HIGH SPEED GEAR MFG