Planar flow distribution cycloid hydraulic motor

Abstract

The utility model relates to the technical field of BMSY cycloid motors, in particular to a plane flow distribution cycloid hydraulic motor which comprises a main shell and an output shaft installed in the main shell, a connecting plate, an external stator, a flow distribution supporting plate and a rear cover are fixedly assembled on the right side of the main shell in sequence, and a flow distribution disc matched with the flow distribution supporting plate is arranged in the rear cover. According to the plane flow distribution cycloid hydraulic motor, an output mechanism large radial supporting assembly is adopted, lubrication of a bearing is guaranteed through a special distribution hole, the motor can bear large radial force, the reliability of the motor in use is enhanced, a flow distribution system and a flow distribution channel adopt multi-stage sealing and independent leakage oil ports, the installation size is reduced, and the service life of the motor is prolonged. And the bearing capacity of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of BMSY cycloid motors, in particular to a plane flow distribution cycloid hydraulic motor. Background Art

[0002] The cycloid motor is a small, low-speed, high-torque hydraulic motor with an internal meshing cycloid gear. Because its tooth profile is a cycloid, its motion trajectory is a cycloid curve. By converting the rotational motion of the cycloid curve into translational motion, it generates power and drives mechanical motion. The structure of the cycloid motor is simpler than that of the traditional motor, and it can generate large torque at extremely low speeds. Therefore, it has more advantages than other motors in some occasions. The cycloid motor has many advantages such as simple structure, small size, wide speed range, low price, and easy use and maintenance. It has been widely used in equipment in agricultural machinery, engineering, construction machinery and other industries.

[0003] The internal structure of the current cycloid motors is mostly an integral whole. The design structure and distribution hole design of the radial support assembly of the output mechanism are relatively traditional, resulting in insufficient reliability of motor assembly and support, and a low service life. In addition, the motor's external oil leakage port is designed at the connecting plate, resulting in a large installation volume for the slewing mechanism and low convenience during assembly of the main engine. The sealing performance of the distribution support plate is limited, and the motor's pressure-bearing capacity is insufficient. Utility Model Content

[0004] The technical problem to be solved by the utility model is: the internal structure of the current cycloid motor is mostly an integral whole, and the design structure and distribution hole design of the radial support assembly of the output mechanism are relatively traditional, resulting in insufficient reliability of motor assembly and support, and a low service life; and the motor leakage oil port is designed at the connecting plate, resulting in a large installation volume of the rotary mechanism and low convenience during assembly of the main engine; the sealing performance of the distribution support plate is limited, and the motor's pressure-bearing capacity is insufficient.

[0005] The utility model solves the technical problem by adopting the following technical solution: a plane flow distribution cycloid hydraulic motor, comprising a main housing, an output shaft installed inside the main housing, a connecting plate, an external stator, a flow distribution support plate and a rear cover are fixedly mounted on the right side of the main housing in sequence, a flow distribution disk matched with the flow distribution support plate is arranged inside the rear cover, a rotor with needle teeth on the inner wall is movably mounted inside the external stator, the inside of the output shaft and the inside of the rotor are connected by a linkage shaft transmission, a flow distribution linkage shaft is arranged between the flow distribution disk and the inside of the rotor, and an oil port for flow distribution is opened on the rear cover.

[0006] A distribution pressure plate for improving the stability of the distribution plate is installed inside the rear cover, and a limiting column for improving the lateral limiting capacity of the distribution linkage shaft is installed inside the distribution pressure plate.

[0007] Two roller bearings for improving the rotation stability of the output shaft are installed inside the main housing.

[0008] The inner end of the output shaft is provided with a transmission blind hole matched with the linkage shaft, and the inner side surface of the transmission blind hole is provided with a pin gear meshing with the tooth head at the end of the linkage shaft.

[0009] An oil port cover is installed on the rear cover at the oil port position.

[0010] A wave spring is arranged between the inner side surface of the rear cover and the side wall of the distribution pressure plate.

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

[0012] (1) The large radial support assembly of the output mechanism of the plane-distributed cycloid hydraulic motor of the utility model is composed of two tapered roller bearings and a spacer sleeve. The spacer sleeve is provided with a distribution hole having a shrinkage, a neck hole and a flared opening connected to the oil groove, so as to ensure the lubrication of the bearing and improve the reliability of the motor assembly and support;

[0013] (2) The motor oil drain port is set on the rear housing through a special oil distribution channel to reduce the installation volume of the rotary assembly;

[0014] (3) The distribution support plate is machined with a sealing groove on the end face and the outer shape to form a multi-stage combined sealing structure to prevent oil leakage on the joint surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0018] Figure 3 It is a side partial sectional view of the utility model. DETAILED DESCRIPTION

[0019] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Figure 1 , Figure 2 and Figure 3 The plane distribution cycloid hydraulic motor shown comprises a main housing 1, an output shaft 2 installed inside the main housing 1, a connecting plate 3, an external stator 4, a distribution support plate 5 and a rear cover 6 are fixedly mounted on the right side of the main housing 1 in sequence, a distribution disk 7 matched with the distribution support plate 5 is arranged inside the rear cover 6, a rotor 8 with needle teeth on the inner wall is movably mounted inside the external stator 4, the inside of the output shaft 2 and the inside of the rotor 8 are connected by a linkage shaft 9, a distribution linkage shaft 10 is arranged between the distribution disk 7 and the inside of the rotor 8, and an oil port 11 for distribution is opened on the rear cover 6.

[0022] The flow distribution method of the entire hydraulic motor is the existing technology, which is driven by distributing the flow of the distribution plate 7 and the rotor 8.

[0023] In order to cooperate with the lateral limit and ensure the transmission stability of the linkage shaft 9 and the distribution linkage shaft 10, a distribution pressure plate 12 for improving the stability of the distribution plate 7 is installed inside the rear cover 6, and a limit column 13 for improving the lateral limit capacity of the distribution linkage shaft 10 is installed inside the distribution pressure plate 12.

[0024] In order to reduce internal transmission friction, two roller bearings 14 are installed inside the main housing 1 to improve the rotation stability of the output shaft 2.

[0025] In order to cooperate with the inner transmission control, a transmission blind hole 15 cooperating with the linkage shaft 9 is opened at the inner end of the output shaft 2, and a pin gear 16 meshing with the tooth head at the end of the linkage shaft 9 is provided on the inner side surface of the transmission blind hole 15.

[0026] The pin teeth on the inner side of the rotor 8 and the double countersunk holes of the pin gear 16 are both designed as a pressed groove structure, so that an oil film is formed on the end surface friction pair, the end surface friction coefficient is reduced, and the mechanical efficiency of the motor is improved.

[0027] In order to cooperate with the external closing control, an oil port cover 17 is installed on the rear cover 6 at the oil port position.

[0028] In order to enhance lateral elastic extrusion, a wave spring 18 is provided between the inner side of the rear cover 6 and the side wall of the distribution pressure plate 12 .

[0029] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A plane flow distribution cycloid hydraulic motor, comprising a main housing (1) and an output shaft (2) mounted inside the main housing (1), wherein: The right side of the main housing (1) is fixedly equipped with a connecting plate (3), an external stator (4), a distribution support plate (5) and a rear cover (6) in sequence; a distribution plate (7) matching the distribution support plate (5) is arranged inside the rear cover (6); a rotor (8) having needle teeth on the inner wall is movably arranged inside the external stator (4); the interior of the output shaft (2) and the interior of the rotor (8) are connected by a linkage shaft (9); a distribution linkage shaft (10) is arranged between the distribution plate (7) and the interior of the rotor (8); and an oil port (11) for distribution is opened on the rear cover (6).

2. The plane flow distribution cycloid hydraulic motor according to claim 1 is characterized in that: A distribution pressure plate (12) for improving the stability of the distribution plate (7) is installed inside the rear cover (6), and a limiting column (13) for improving the lateral limiting ability of the distribution linkage shaft (10) is installed inside the distribution pressure plate (12).

3. The plane flow distribution cycloid hydraulic motor according to claim 1, characterized in that: Two roller bearings (14) are installed inside the main housing (1) to improve the rotation stability of the output shaft (2).

4. The plane flow distribution cycloid hydraulic motor according to claim 1, characterized in that: The inner end of the output shaft (2) is provided with a transmission blind hole (15) matched with the linkage shaft (9), and the inner side surface of the transmission blind hole (15) is provided with a pin gear (16) meshing with the tooth head at the end of the linkage shaft (9).

5. The plane flow distribution cycloid hydraulic motor according to claim 1, characterized in that: An oil port cover (17) is installed on the rear cover (6) at the position of the oil port (11).

6. The plane flow distribution cycloid hydraulic motor according to claim 1, characterized in that: A wave spring (18) is arranged between the inner side surface of the rear cover (6) and the side wall of the distribution pressure plate (12).

Images