Axial flow distribution cycloid hydraulic motor

Abstract

The utility model relates to the technical field of cycloid motors, in particular to a shaft flow distribution cycloid hydraulic motor which comprises a body shell, a front cover, a rear cover, a rotor and stator pair and an output shaft, a flow distribution channel is formed in the arc-shaped face of the outer side of the output shaft, a radial flow distribution hole matched with the flow distribution channel is formed in the body shell, and the radial flow distribution hole is of an oval structure. According to the axial flow distribution cycloid hydraulic motor, the radial flow distribution holes are designed to be oval, so that the flow distribution channels can be gradually opened and closed, the situation that due to position errors of the flow distribution grooves, the opening of the flow distribution channels is advanced or lagged in the working process of the motor is avoided, and pressure pulsation is reduced; and the arc-shaped guide inclined surfaces are arranged at the inner side ends of the flow distribution channels, so that hydraulic noise can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of cycloidal motor technology, and in particular to a shaft-distributed cycloidal hydraulic motor. Background Technology

[0002] The axial-distribution cycloidal hydraulic motor is a type of hydraulic motor that is driven by an axial-distribution geared stator and rotor pair, and features small size and simple structure.

[0003] Currently, the distribution holes of axial cycloidal hydraulic motors on the market are circular. If there is an error in the position of the distribution channel, it is easy to cause the distribution channel to open ahead or behind during the operation of the motor, which will increase pressure pulsation and drive noise. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the positional error between the distribution hole and the distribution channel of the axial distribution cycloidal hydraulic motor currently on the market can easily cause the distribution channel to open ahead or behind during the operation of the motor, increasing pressure pulsation and also causing relatively large driving noise.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a axial flow cycloidal hydraulic motor, including a housing, a front cover, a rear cover, a rotor-stator pair and an output shaft, wherein a flow distribution channel is provided on the outer arc surface of the output shaft, and a radial flow distribution hole that cooperates with the flow distribution channel is provided inside the housing, wherein the radial flow distribution hole has an elliptical structure.

[0006] The output shaft has an internal transmission chamber.

[0007] The inner end wall of the internal transmission chamber has an internal transmission gear ring, and the rotor of the rotor-stator pair has an external transmission gear ring inside.

[0008] The internal transmission chamber is equipped with a linkage shaft.

[0009] The two ends of the linkage shaft are respectively engaged with the internal transmission gear ring and the external transmission gear ring.

[0010] The inner end of the distribution channel is provided with an arc-shaped guide slope.

[0011] The beneficial effects of this utility model are:

[0012] (1) The radial distribution hole of the axial distribution cycloidal hydraulic motor of this utility model adopts an elliptical design, which allows the distribution channel to open and close gradually, preventing the distribution channel from opening ahead or behind due to the position error of the distribution groove during the operation of the motor, and reducing pressure pulsation.

[0013] (2) By providing an arc-shaped guide slope on the inner end of the distribution channel, hydraulic noise can be reduced. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the layout of the radial flow distribution holes in this utility model. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Figure 1 and Figure 2 The axial flow cycloidal hydraulic motor shown includes a housing 1, a front cover 2, a rear cover 3, a rotor-stator assembly 4, and an output shaft 5. The housing 1, front cover 2, rear cover 3, and rotor-stator assembly 4 are assembled by bolts. A flow distribution channel 6 is provided on the outer arc-shaped surface of the output shaft 5. A radial flow distribution hole 7 that cooperates with the flow distribution channel 6 is provided inside the housing 1. The radial flow distribution hole 7 has an elliptical structure.

[0020] To facilitate internal transmission, an internal transmission chamber 8 is provided inside the output shaft 5.

[0021] To cooperate with the internal drive, the inner end wall of the internal transmission chamber 8 has an internal transmission gear ring 9, and the rotor of the rotor-stator pair 4 has an external transmission gear ring 10.

[0022] To facilitate linkage, a linkage shaft 11 is installed inside the internal transmission chamber 8.

[0023] To facilitate control at both ends, the two ends of the linkage shaft 11 are respectively engaged with the internal transmission gear ring 9 and the external transmission gear ring 10.

[0024] The rotor-stator pair 4 adopts an 8-9 tooth small eccentricity design, which further reduces the size of a single high and low pressure cavity, improves the low-speed stability of the motor, and reduces the bending moment borne by the linkage shaft 11.

[0025] To reduce hydraulic noise and improve quietness, an arc-shaped guide slope is provided on the inner end of the distribution channel 6.

[0026] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A shaft-distributed cycloidal hydraulic motor, comprising a housing (1), a front cover (2), a rear cover (3), a rotor-stator pair (4), and an output shaft (5), characterized in that: The output shaft (5) has a flow distribution channel (6) on its outer arc surface, and the shell (1) has a radial flow distribution hole (7) that matches the flow distribution channel (6). The radial flow distribution hole (7) has an elliptical structure.

2. The gerotor hydraulic motor according to claim 1, characterized in that: The output shaft (5) has an internal transmission chamber (8) inside.

3. The gerotor hydraulic motor of claim 2, wherein: The inner end wall of the internal transmission chamber (8) has an internal transmission gear ring (9), and the rotor of the rotor-stator pair (4) is provided with an external transmission gear ring (10).

4. The gerotor hydraulic motor of claim 3, wherein: The internal transmission chamber (8) is equipped with a linkage shaft (11).

5. The gerotor hydraulic motor of claim 4, wherein: The two ends of the linkage shaft (11) are respectively engaged with the internal transmission gear ring (9) and the external transmission gear ring (10).

6. The gerotor hydraulic motor of claim 1, wherein: The inner end of the distribution channel (6) is provided with an arc-shaped guide slope.

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