HST hydraulic continuously variable transmission assembly with oil supplementing pump

Abstract

The utility model relates to an HST hydraulic continuously variable transmission assembly with an oil recharging pump, which comprises a transmission shell, an oil recharging structure is arranged on the transmission shell, the oil recharging structure comprises an oil recharging pump shell, an oil recharging channel is arranged on the oil recharging pump shell, and the oil recharging pump shell is connected with the oil recharging channel. An oil supplementing channel is formed in the bottom of the transmission shell, a containing cavity communicated with the oil supplementing channel is formed in the bottom of the transmission shell, an outer rotor is arranged in the containing cavity, an inner rotor is arranged in the outer rotor, and the inner rotor is meshed with the outer rotor. The design change of an original HST hydraulic continuously variable transmission assembly is reduced to the maximum extent, and an oil recharging pump mechanism is added to achieve self oil recharging.

Description

Technical Field

[0001] This utility model belongs to the field of transmission technology and relates to an HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump. Background Technology

[0002] The HST hydraulic continuously variable transmission (CVT) assembly used in ride-on rice transplanters in the domestic agricultural machinery market employs an external oil replenishment method with a hydraulic pressure of 5-7 bar. Hydraulic oil enters the HST hydraulic circulation system through two replenishment ports, X and Y. Due to the structural characteristics of the X and Y replenishment ports, the HST hydraulic CVT assembly with external oil replenishment has a limited range of applications, primarily limited to ride-on rice transplanters and unable to be used in a wider range of agricultural machinery, such as garden machinery. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump.

[0004] The objective of this utility model can be achieved through the following technical solution: an HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump, comprising a transmission housing, an oil replenishment structure provided on the transmission housing, the oil replenishment structure comprising an oil replenishment pump housing, an oil replenishment channel provided on the oil replenishment pump housing, a receiving cavity connected to the oil replenishment channel being opened at the bottom of the transmission housing, an outer rotor being provided in the receiving cavity, an inner rotor being provided inside the outer rotor, and the inner rotor meshing with the outer rotor.

[0005] In the aforementioned HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump, the oil replenishment channel is horizontally opened, and an oil inlet connector is provided on the oil replenishment channel, which is threadedly connected to the oil replenishment channel.

[0006] In the aforementioned HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump, a wear-resistant plate is also provided between the transmission housing and the oil replenishment pump housing.

[0007] In the aforementioned HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump, a sealing ring is provided between the oil inlet connector and the transmission housing.

[0008] In the aforementioned HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump, the oil replenishment pump housing is provided with fixing bolts for fixing the oil replenishment structure to the transmission housing.

[0009] Compared with the prior art, this utility model achieves self-oil replenishment by changing the external oil replenishment mode to a self-oil replenishment mode, minimizing the design changes to the original HST hydraulic continuously variable transmission assembly, and adding an oil replenishment pump mechanism. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a cross-sectional view of the present invention;

[0012] Figure 3 This is an installation diagram of this utility model;

[0013] Figure 4 This is a schematic diagram of the connection between the inner rotor and the output shaft of this utility model;

[0014] Figure 5 This is a schematic diagram of the transmission housing structure of this utility model.

[0015] In the diagram, 1. Transmission housing; 2. Oil pump housing; 3. Oil replenishment channel; 4. Receiving cavity; 5. Outer rotor; 6. Inner rotor; 7. Oil inlet connector; 8. Wear-resistant plate; 9. Output shaft; 10. Fixing bolt. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0017] like Figures 1 to 5 As shown, an HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump includes a transmission housing 1, an output shaft 9 disposed on the transmission housing 1, an oil replenishment structure disposed on the transmission housing 1, the oil replenishment structure including an oil replenishment pump housing 2, an oil replenishment channel 3 disposed on the oil replenishment pump housing 2, a receiving cavity 4 connected to the oil replenishment channel 3 being opened at the bottom of the transmission housing 1, an outer rotor 5 disposed in the receiving cavity 4, an inner rotor 6 disposed in the outer rotor 5, the inner rotor 6 meshing with the outer rotor 5, and an output end spline on the transmission housing 1 being mounted on the inner rotor 6.

[0018] Furthermore, the oil replenishment channel 3 is horizontally opened, and an oil inlet connector 7 is provided on the oil replenishment channel 3. The oil inlet connector 7 is connected to an external oil supply device. The oil inlet connector 7 is threadedly connected to the oil replenishment channel 3. A sealing ring is provided between the oil inlet connector 7 and the transmission housing 1. The sealing ring can improve the connection sealing between the oil inlet connector 7 and the transmission housing 1, thereby preventing oil leakage.

[0019] The oil replenishment pump housing 2 is provided with fixing bolts 10 for fixing the oil replenishment structure to the transmission housing 1. The fixing bolts 10 are located on both sides of the oil replenishment pump housing 2.

[0020] Furthermore, a wear-resistant plate 8 is provided between the transmission housing 1 and the oil pump housing 2. The wear-resistant plate 8 is installed on the transmission housing 1 and the oil pump housing 2. When the oil pump housing 2 is fixed to the transmission housing 1 by the fixing bolts 10, it can press the wear-resistant plate 8, thereby fixing the wear-resistant plate 8. The wear-resistant plate 8 has a through hole through which the output shaft 9 can pass.

[0021] This invention reduces the need for design changes to the original HST hydraulic continuously variable transmission assembly by changing the external oil replenishment mode to a self-replenishing mode, and adds an oil replenishment pump mechanism to achieve self-replenishment and lubricate the inner rotor 6 and outer rotor 5 inside the oil replenishment pump housing 2.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump, characterized in that, The transmission housing (1) includes a transmission housing (1) and an oil replenishment structure. The oil replenishment structure includes an oil replenishment pump housing (2) and an oil replenishment channel (3). The bottom of the transmission housing (1) has a receiving cavity (4) that communicates with the oil replenishment channel (3). An outer rotor (5) is provided in the receiving cavity (4), and an inner rotor (6) is provided in the outer rotor (5). The inner rotor (6) meshes with the outer rotor (5).

2. The HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump according to claim 1, characterized in that: The oil replenishment channel (3) is horizontally opened, and an oil inlet connector (7) is provided on the oil replenishment channel (3). The oil inlet connector (7) is threadedly connected to the oil replenishment channel (3).

3. The HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump according to claim 2, characterized in that: A wear-resistant plate (8) is also provided between the transmission housing (1) and the oil pump housing (2).

4. The HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump according to claim 3, characterized in that: A sealing ring is provided between the oil inlet connector (7) and the transmission housing (1).

5. The HST hydraulic continuously variable transmission assembly with a built-in oil replenishment pump according to claim 4, characterized in that: The oil replenishment pump housing (2) is provided with fixing bolts (10) for fixing the oil replenishment structure to the transmission housing (1).

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