Planetary gear transmission

Abstract

The utility model discloses a planetary gear transmission which comprises a transmission shell, a protective shell is arranged on the outer surface of the transmission shell in a wrapping mode, a gap is formed between the inner surface of the protective shell and the outer surface of the transmission shell to form a sealed cavity, and a flow guide assembly is arranged in the cavity. The flow guide assembly abuts against the position between the transmission shell and the inner surface of the protective shell, the portion, located at the bottom of the transmission shell, of the protective shell is connected with a base, a cooling cavity is formed in the base, a water supply pipe is communicated with the interior of one end of the cooling cavity and the sealing cavity, and a water return pipe is communicated with the interior of the other end of the cooling cavity and the sealing cavity. A water pump is mounted at the tail end of the water supply pipe in the cooling cavity; the water pump pumps the cooling liquid into the cavity formed between the protective shell and the transmission shell through the water supply pipe, heat exchange is carried out to take away heat generated in the operation process of the transmission, the cooling liquid is evenly dispersed in the cavity through the flow guide assembly, and heat dissipation and cooling are carried out on the transmission more comprehensively.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission, in particular to a planetary gear transmission. Background Art

[0002] As one of the core components of a car, the automobile transmission plays a vital role in the entire vehicle. The core of the transmission is the ability to shift gears. During driving, the driver controls the accelerator pedal according to the driving speed, and the transmission switches to different gears according to the engine load. Any abnormal operation of any component in the transmission system will cause transmission failure.

[0003] The working environment of the transmission is very harsh. The relative movement and friction of mechanical parts will generate a certain amount of heat. If the heat is not dissipated in a reasonable way, it will cause great damage to the transmission. For this reason, we propose a planetary gear transmission. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a planetary gear transmission, in which a cooling cavity of the base stores coolant, and a water pump pumps the coolant into a cavity formed between a protective shell and a transmission housing through a water supply pipe. The coolant contacts the transmission housing to exchange heat and take away the heat generated during the operation of the transmission, and the guide component evenly disperses the coolant in the cavity, thereby more comprehensively dissipating heat and cooling the transmission.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a planetary gear transmission, comprising a transmission housing, the outer surface of the transmission housing is covered with a protective shell, and a gap is formed between the inner surface of the protective shell and the outer surface of the transmission housing to form a sealed cavity, and a guide assembly is arranged in the cavity;

[0006] The flow guide assembly abuts between the transmission housing and the inner surface of the protective shell;

[0007] The protective shell is located at the bottom of the transmission housing and is connected to a base, a cooling cavity is provided inside the base, one end of the cooling cavity is connected to the sealed cavity and a water supply pipe is provided, and the other end of the cooling cavity is connected to the sealed cavity and a water return pipe is provided;

[0008] A water pump is installed at the end of the water supply pipe inside the cooling chamber.

[0009] Preferably, the guide assembly includes a support baffle, which is spirally wound around the outer surface of the transmission housing, and the protective shell is radially connected between the transmission housing and the inner cavity of the protective shell.

[0010] Preferably, the guide assembly includes a plurality of support baffles, which are in an annular structure and are distributed at axial intervals along the outer surface of the transmission housing, and through holes are formed through the support baffles.

[0011] Preferably, baffles are connected between adjacent supporting baffles, the baffles separate the cavities between adjacent supporting baffles, and the through holes on adjacent supporting baffles are respectively located on both sides of the baffles.

[0012] Preferably, a heat dissipation wire is connected to the inner wall of the cooling chamber between the water supply pipe and the water return pipe.

[0013] Preferably, an air cooling hole is formed through the side surface of the lower end of the base, and the tail end of the heat sink wire extends into the interior of the air cooling hole.

[0014] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0015] The cooling cavity of the base stores coolant, and the water pump pumps the coolant into the cavity formed between the protective shell and the transmission housing through the water supply pipe. The coolant contacts the transmission housing to exchange heat and remove the heat generated during the operation of the transmission. The guide component evenly disperses the coolant in the cavity, dissipating heat and cooling the transmission more comprehensively.

[0016] The coolant flows to the other end of the cavity under the continuous pumping of the water pump, and finally flows into the cooling cavity of the base through the return pipe. The coolant in the cooling cavity can be recycled. The guide component also supports the gap between the protective shell and the transmission housing to avoid dents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the supporting partition of the utility model.

[0019] Figure 3 It is a schematic diagram of the supporting partition of the utility model.

[0020] Figure 4 It is a cross-sectional view of the base of the utility model.

[0021] Among them: 1. Transmission housing; 2. Support partition; 3. Protective shell; 4. Base; 5. Through hole; 6. Baffle; 7. Cooling chamber; 8. Water supply pipe; 9. Water pump; 10. Return pipe; 11. Heat sink; 12. Air cooling hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0027] Example

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the utility model provides a planetary gear transmission, including a transmission housing 1, the outer surface of the transmission housing 1 is covered with a protective shell 3, and a gap is formed between the inner surface of the protective shell 3 and the outer surface of the transmission housing 1 to form a sealed cavity, a flow guide component is arranged in the cavity, the flow guide component abuts between the transmission housing 1 and the inner surface of the protective shell 3, the protective shell 3 is located at the bottom of the transmission housing 1 and is connected with a base 4, a cooling cavity 7 is opened inside the base 4, a water supply pipe 8 is arranged inside the cooling cavity 7 and one end of the sealed cavity is connected, a water return pipe 10 is arranged inside the cooling cavity 7 and the other end of the sealed cavity is connected, a water pump 9 is installed at the end of the water supply pipe 8 inside the cooling cavity 7, and the base 4 is provided with a cooling cavity 7. It is conducive to the installation and fixation of the cylindrical transmission housing 1 to avoid rolling. The cooling cavity 7 of the base 4 stores coolant. The water pump 9 pumps the coolant through the water supply pipe 8 to the cavity formed between the protective shell 3 and the transmission housing 1. The coolant contacts the transmission housing 1 to exchange heat and take away the heat generated during the operation of the transmission. The guide component disperses the coolant evenly in the cavity to dissipate heat and cool the transmission more comprehensively. The coolant flows to the other end of the cavity under the continuous pumping of the water pump 9, and finally flows into the cooling cavity 7 of the base 4 through the return pipe 10. The coolant in the cooling cavity 7 can be recycled. The guide component also supports the gap between the protective shell 3 and the transmission housing 1 to avoid depression.

[0029] like Figure 2 As shown, the utility model discloses a flow guide assembly including a support baffle 2, which is spirally wound around the outer surface of a transmission housing 1, and a protective shell 3 is radially connected between the transmission housing 1 and the inner cavity of the protective shell 3.

[0030] like Figure 3 As shown, the utility model discloses a flow guide assembly including a plurality of support baffles 2, which are annular in structure and are distributed at axial intervals along the outer surface of a transmission housing 1, through holes 5 are penetrated through the support baffles 2, baffles 6 are connected between adjacent support baffles 2, and the baffles 6 separate the cavities between adjacent support baffles 2, and the through holes 5 on adjacent support baffles 2 are respectively located on both sides of the baffle 6.

[0031] like Figure 4 As shown, the utility model discloses that the inner wall of the cooling chamber 7 is connected with a heat sink 11 between the water supply pipe 8 and the return pipe 10, and a wind cooling hole 12 is penetrated through the lower end side of the base 4, and the tail end of the heat sink 11 extends into the inside of the wind cooling hole 12.

[0032] The utility model provides a planetary gear transmission, wherein a base 4 is conducive to the installation and fixation of a transmission housing 1 with a cylindrical shape to avoid rolling. A cooling cavity 7 of the base 4 stores coolant, and a water pump 9 pumps the coolant through a water supply pipe 8 to a cavity formed between a protective shell 3 and the transmission housing 1. The coolant contacts the transmission housing 1 to exchange heat and take away the heat generated during the operation of the transmission. The guide component disperses the coolant evenly in the cavity to dissipate heat and cool the transmission more comprehensively. The coolant flows to the other end of the cavity under the continuous pumping of the water pump 9, and finally flows into the cooling cavity 7 of the base 4 through a return pipe 10. The coolant in the cooling cavity 7 can be recycled, and the guide component simultaneously supports the gap between the protective shell 3 and the transmission housing 1 to avoid depression.

[0033] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary gear transmission, comprising a transmission housing (1), characterized in that: The outer surface of the transmission housing (1) is covered with a protective shell (3), and a gap is provided between the inner surface of the protective shell (3) and the outer surface of the transmission housing (1) to form a sealed cavity, and a flow guide component is provided in the cavity; The flow guide component is in contact with the inner surface of the transmission housing (1) and the protective shell (3); The protective shell (3) is located at the bottom of the transmission housing (1) and is connected to a base (4); a cooling cavity (7) is provided inside the base (4); a water supply pipe (8) is provided inside the cooling cavity (7) and one end of the sealed cavity is connected; and a water return pipe (10) is provided inside the cooling cavity (7) and the other end of the sealed cavity; A water pump (9) is installed at the end of a water supply pipe (8) inside the cooling chamber (7).

2. A planetary gear transmission according to claim 1, characterized in that: The flow guide assembly comprises a support baffle (2), the support baffle (2) being spirally wound around the outer surface of the transmission housing (1), and the protective shell (3) being radially connected between the transmission housing (1) and the inner cavity of the protective shell (3).

3. A planetary gear transmission according to claim 1, characterized in that: The flow guide assembly comprises a plurality of support baffles (2), the support baffles (2) being annular in structure and distributed at axial intervals along the outer surface of the transmission housing (1), and through holes (5) being provided through the support baffles (2).

4. A planetary gear transmission according to claim 3, characterized in that: Baffles (6) are connected between adjacent supporting baffles (2), and the baffles (6) separate the cavities between adjacent supporting baffles (2). The through holes (5) on adjacent supporting baffles (2) are respectively located on both sides of the baffles (6).

5. A planetary gear transmission according to claim 1, characterized in that: The inner wall of the cooling chamber (7) is located between the water supply pipe (8) and the water return pipe (10) and is connected with a heat dissipation wire (11).

6. A planetary gear transmission according to claim 5, characterized in that: An air cooling hole (12) is formed through the side surface of the lower end of the base (4), and the tail end of the heat dissipation wire (11) extends into the interior of the air cooling hole (12).

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