Differential mechanism with drum-shaped inner hole planetary gear

Abstract

The utility model discloses a differential mechanism with a drum-shaped inner hole planetary gear, and relates to the technical field of differential mechanisms. The number of the drum-shaped inner hole planetary gears is two, a planetary gear shaft is installed at the center in the differential case, and the two drum-shaped inner hole planetary gears are installed at the two ends of the planetary gear shaft correspondingly; and a half axle gear. According to the differential mechanism with the drum-shaped inner hole planetary gear, through the use of the drum-shaped inner hole planetary gear, the phenomena of meshing noise and unbalance loading of the planetary gear and the half axle gear caused by reduction of product precision and large assembly errors are solved, and after the inner hole of the planetary gear is changed into a drum shape, meshing marks caused by reduction of the precision of the planetary gear can be improved; and the inner hole of the planetary gear of the differential assembly is designed to be in a drum shape, so that the meshing noise caused by reduction of the precision of the planetary gear and the half axle gear can be reduced, and the service life of the gear is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of differentials, in particular to a differential with a drum-shaped inner-hole planetary gear. Background Art

[0002] In the current market, the planetary gear inner holes of the planetary differential assembly of the front and rear axles of ATVs have no drum shape. The front and rear axles of ATVs are important components of the power output of ATVs. The planetary gears are functional parts of the differential assembly. The accuracy of the planetary gears directly affects the quality and noise of the front and rear axles.

[0003] The authorization publication number "CN216742693U" records "a long-term differential assembly with a drum shape and a convexity, including a left differential case, axle gears, axle gear gaskets, planetary gears, planetary gear gaskets, a right differential case and a cross shaft. The left differential case is connected to the right differential case to form a differential case. The axle gears, axle gear gaskets, planetary gears, planetary gear gaskets and cross shafts are respectively installed in the differential case. An oil groove is provided on the left differential case, and an oil storage pit is provided on the planetary gear gasket. The tooth surface of the planetary gear is a drum-shaped structure, and the two ends of the planetary gear shaft hole are arc-shaped structures. Reasonable and effective lubrication of the differential and smooth transition contact between the differential planetary gears and the cross shaft can prevent differential failure caused by poor lubrication of the differential assembly and abnormal contact wear, thereby improving the service life of the differential assembly and the drive axle."

[0004] The above patent lubricates the differential reasonably and effectively, and ensures smooth transition contact between the differential planetary gear and the cross shaft, thereby preventing differential failure caused by poor lubrication of the differential assembly and abnormal contact wear, and improving the service life of the differential assembly and the drive axle. However, the control of the drum shape of the inner hole and the control of the measurement error may cause the meshing marks of the planetary gears and the half-shaft gears to deteriorate and the meshing noise to exceed the standard due to the reduced accuracy of the planetary gears, half-shaft gears and differential case, resulting in gear unbalance and reduced gear life. Utility Model Content

[0005] The utility model provides a differential with a planetary gear with a drum-shaped inner hole. By using the planetary gear with a drum-shaped inner hole, the meshing noise and the eccentric load of the planetary gear and the half-shaft gear caused by the reduced product precision and the large assembly error are solved. After the inner hole of the planetary gear is changed to a drum shape, the meshing mark caused by the reduced precision of the planetary gear can be improved, the meshing noise can be reduced, the gear life can be increased, the life of the differential assembly can be increased, and the gear meshing noise can be reduced. The inner hole of the planetary gear of the differential assembly is designed to be drum-shaped, which can reduce the meshing noise caused by the reduced precision of the planetary gear and the half-shaft gear and increase the gear life.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a differential with a drum-shaped inner hole planetary gear, comprising:

[0007] Differential case;

[0008] There are two drum-shaped inner-hole planetary gears, a planetary gear shaft is installed at the center of the differential case, and the two drum-shaped inner-hole planetary gears are installed at both ends of the planetary gear shaft respectively; and

[0009] The side shaft gears are provided with two, and the two side shaft gears are rotatably connected to the upper and lower ends of the differential case respectively, and the two side shaft gears are meshed with the two drum-shaped inner hole planetary gears.

[0010] Furthermore, the diameter of the tooth top circle of the drum-shaped inner hole planetary gear is 48.5 mm, and the installation distance of the drum-shaped inner hole planetary gear from the gear rim thickness is 37.8 mm.

[0011] Furthermore, the diameter of one end of the tooth groove of the drum-shaped inner hole planetary gear is 23.8 mm, and the diameter of the other end of the tooth groove of the drum-shaped inner hole planetary gear is 35 mm.

[0012] The utility model provides a differential with a drum-shaped inner hole planetary gear, which has the following beneficial effects:

[0013] (1) The differential with a planetary gear having a drum-shaped inner hole solves the problems of meshing noise and eccentric load of the planetary gear and the half-shaft gear caused by reduced product precision and large assembly error by using the planetary gear having a drum-shaped inner hole. After the inner hole of the planetary gear is changed to a drum shape, the meshing mark caused by reduced precision of the planetary gear can be improved, the meshing noise can be reduced, the gear life can be increased, the life of the differential assembly can be increased, and the gear meshing noise can be reduced. The inner hole of the planetary gear of the differential assembly is designed to be drum-shaped, which can reduce the meshing noise caused by reduced precision of the planetary gear and the half-shaft gear and increase the gear life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 This is a three-dimensional diagram of the planetary gear of the utility model;

[0016] Figure 3 This is a cross-sectional view of the planetary gear of the utility model;

[0017] Figure 4 It is an enlarged view of A of the present utility model;

[0018] Figure 5 It is an enlarged view of B of the utility model;

[0019] Figure 6 It is an enlarged view of C of the present utility model.

[0020] In the figure: 1, differential case; 2, planetary gear; 3, half-shaft gear; 4, planetary gear shaft. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-6 The utility model provides a technical solution: a differential with a drum-shaped inner hole planetary gear, comprising:

[0023] Differential case 1;

[0024] There are two drum-shaped inner-hole planetary gears 2, a planetary gear shaft 4 is installed at the center of the differential case 1, and the two drum-shaped inner-hole planetary gears 2 are installed at both ends of the planetary gear shaft 4 respectively; and

[0025] There are two side shaft gears 3 , which are rotatably connected to the upper and lower ends of the differential case 1 , respectively, and the two side shaft gears 3 are meshed with the two drum-shaped inner hole planetary gears 2 .

[0026] In this implementation scheme: the drum-shaped inner hole planetary gear 2 and the half-shaft gear 3 are both installed in the differential case 1, and the differential is completed by the mutual cooperation of the drum-shaped inner hole planetary gear 2 and the half-shaft gear 3. The shape and data of the planetary gear are calculated and completed. By changing the drum-shaped inner hole planetary gear 2, the meshing noise and eccentric load of the planetary gear and the half-shaft gear caused by the reduced product precision and the large assembly error are solved, and the gear life is improved. After the inner hole of the planetary gear is changed to a drum shape, the meshing mark caused by the reduced precision of the planetary gear can be improved. The inner hole of the drum-shaped inner hole planetary gear 2 of the differential assembly is designed to be drum-shaped, which can reduce the meshing noise caused by the reduced precision of the planetary gear and the half-shaft gear and improve the gear life.

[0027] Specifically, the diameter of the tooth top circle of the drum-shaped inner hole planetary gear 2 is 48.5 mm, and the installation distance of the drum-shaped inner hole planetary gear 2 from the gear rim thickness is 37.8 mm.

[0028] Specifically, the diameter of one end of the tooth groove of the drum-shaped inner hole planetary gear 2 is 23.8 mm, and the diameter of the other end of the tooth groove of the drum-shaped inner hole planetary gear 2 is 35 mm.

[0029] When in use, the device is installed at the location of use, and the differential effect is achieved through the cooperation of the internal drum-shaped inner hole planetary gear 2 and the half-shaft gear 3. Due to the external size and shape of the drum-shaped inner hole planetary gear 2, the meshing noise and eccentric load of the planetary gear and the half-shaft gear caused by reduced product precision and large assembly errors can be solved. After the inner hole of the planetary gear is changed to a drum shape, the meshing mark caused by the reduced precision of the planetary gear can be improved, the meshing noise can be reduced, and the gear life can be increased. The life of the differential assembly can be increased and the gear meshing noise can be reduced. The inner hole of the planetary gear of the differential assembly is designed to be drum-shaped, which can reduce the meshing noise caused by the reduced precision of the planetary gear and the half-shaft gear and increase the gear life.

[0030] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A differential with a drum-shaped inner hole planetary gear, characterized in that: include: Differential case (1); There are two drum-shaped inner hole planetary gears (2), a planetary gear shaft (4) is installed at the center of the differential case (1), and the two drum-shaped inner hole planetary gears (2) are installed at both ends of the planetary gear shaft (4); and The side shaft gears (3) are provided with two, and the two side shaft gears (3) are rotatably connected to the upper and lower ends of the differential case (1) respectively, and the two side shaft gears (3) are mutually meshed with the two drum-shaped inner hole planetary gears (2).

2. The differential with a drum-shaped inner hole planetary gear according to claim 1, characterized in that: The tooth top circle diameter of the drum-shaped inner hole planetary gear (2) is 48.5 mm, and the installation distance of the drum-shaped inner hole planetary gear (2) from the gear wheel rim thickness is 37.8 mm.

3. The differential with a drum-shaped inner hole planetary gear according to claim 2, characterized in that: The diameter of one end of the tooth groove of the drum-shaped inner hole planetary gear (2) is 23.8 mm, and the diameter of the other end of the tooth groove of the drum-shaped inner hole planetary gear (2) is 35 mm.

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