CN218598281U

CN218598281U - Linkage shaft and cycloid hydraulic motor

Info

Publication number: CN218598281U
Application number: CN202222019798.7U
Authority: CN
Inventors: 李庆辉
Original assignee: Hebei Paiyi Hydraulic Machinery Co ltd
Current assignee: Hebei Paiyi Hydraulic Machinery Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2023-03-10
Anticipated expiration: 2032-08-02

Abstract

The utility model relates to a hydraulic motor's technical field especially relates to a linkage shaft and cycloid hydraulic motor. A linkage shaft is connected between a rotor of a cycloid hydraulic motor and a driving shaft and comprises a linkage shaft, wherein external splines are arranged at two ends of the linkage shaft, the angle between adjacent teeth of the external splines is 2.5-5 degrees, contact surfaces are arranged between adjacent teeth, and the contact surfaces are matched with the teeth of the internal splines on the rotor of the hydraulic motor and the driving shaft. The utility model discloses the universal driving shaft has that the moment of torsion is big, advantage that intensity is high. A cycloid hydraulic motor has all the advantages of the linkage shaft.

Description

Linkage shaft and cycloid hydraulic motor

Technical Field

The utility model relates to a hydraulic motor's technical field especially relates to a linkage shaft and cycloid hydraulic motor.

Background

The cycloid hydraulic motor is a type of hydraulic motor, and is an energy conversion device for converting hydraulic energy into mechanical kinetic energy, and is used for driving mechanical parts to rotate. The cycloid hydraulic motor is named by integrating a cycloid type stator and a cycloid type rotor inside, the rotor in the cycloid type stator and the cycloid type rotor is formed by winding cycloid equidistant lines, and the stator and the rotor are matched to finish oil absorption and oil discharge of the motor so as to drive a moving part to rotate. The cycloid hydraulic motor has wide application, and is mainly used in slewing mechanisms of various machines such as agriculture, fishery, light industry, hoisting and transporting, mines, engineering machinery and the like.

The cycloid hydraulic motor belongs to a low-speed motor, and when the cycloid motor rotates for more than 500 revolutions, the output torque is very limited, so that the cycloid hydraulic motor cannot work under the proper working condition of the motor; in addition, under the working conditions of large torque and high rotating speed, the cycloid hydraulic motor universal driving shaft is easy to wear due to the defects of the structure of the cycloid hydraulic motor universal driving shaft, and even the shaft is twisted off.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, an object of the present invention is to provide a linkage shaft with large torque and high strength.

In view of the above, it is another object of the present invention to provide a gerotor hydraulic motor having all the advantages of the above-mentioned universal driving shaft.

In order to achieve the purpose, the utility model provides a linkage shaft, which comprises a linkage shaft, wherein the linkage shaft is connected between a rotor of a cycloid hydraulic motor and a driving shaft; and the two ends of the universal driving shaft are respectively provided with an external spline, the angle between the teeth of the external splines is 2.5-5 degrees, and the adjacent teeth are respectively provided with a contact surface which is matched with the teeth of the internal spline on the hydraulic motor rotor and the driving shaft.

Further, the teeth of the external spline are crowned teeth.

Furthermore, the contact surface is a curved surface matched with the hydraulic motor rotor and the teeth of the internal spline on the driving shaft.

Further, the outer layer of the universal driving shaft is provided with a shot peening strengthening layer.

The utility model discloses the beneficial effect of universal driving shaft does:

the utility model discloses the universal driving shaft specifically is adjustment external splines intertooth space angle through the setting to both ends external splines to add the contact surface in adjacent intertooth space, make that the universal driving shaft can be better with rotor and drive shaft mating reaction, the increase of torque, adaptation intensity improves, and the practicality is stronger.

In order to achieve the purpose, the utility model provides a cycloid hydraulic motor, include the universal driving shaft.

The utility model discloses cycloid hydraulic motor's beneficial effect does: the utility model discloses cycloid hydraulic motor has all advantages of above-mentioned universal driving shaft.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a cross-sectional view of the cycloid hydraulic motor of the present invention;

FIG. 2 is a schematic view of the overall structure of the universal driving shaft of the present invention;

fig. 3 is a schematic view of another embodiment of the present invention;

description of reference numerals:

1. a gerotor hydraulic motor; 11. a linkage shaft; 111. an external spline; 1111. a contact surface; 112. a shot peening strengthening layer; 12. a rotor; 13. a drive shaft.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and 2, the present embodiment provides a linkage shaft 11, which is connected between a rotor 12 and a driving shaft 13 of a cycloid hydraulic motor 1, and includes the linkage shaft 11, wherein both ends of the linkage shaft 11 are provided with external splines 111, and an inter-tooth angle of the external splines 111 is set to be 2.5-5 °. The adjacent teeth on the external spline 111 are provided with contact surfaces 1111, and each contact surface 1111 is adapted to the teeth of the internal spline on the hydraulic motor rotor 12 and the driving shaft 13.

Above-mentioned universal driving shaft 11 specifically is angle between the tooth on the adjustment external spline 111 through the setting of both ends external spline 111 to set up contact surface 1111 in adjacent intertooth space, make universal driving shaft 11 can be better with rotor 12 and drive shaft 13 mating reaction, the moment of torsion increase, adaptation intensity improves, and the practicality is stronger.

Specifically, the teeth of the external splines 111 at both ends of the linkage shaft 11 are crowned teeth.

Specifically, the contact surface 1111 is a curved surface adapted to teeth of an internal spline on the hydraulic motor rotor 12 and the driving shaft 13, and the center of gravity of the curved surface is far away from the central axis of the universal driving shaft 11.

Specifically, referring to fig. 3, the outer layer of the interlocking shaft 11 has a shot peening layer 112. The arrangement of the shot peening strengthening layer 112 obviously improves the surface hardness and the wear resistance of the universal driving shaft 11 of the embodiment and further improves the practicability of the embodiment.

Referring to fig. 1, the embodiment further provides a cycloid hydraulic motor 1, the cycloid hydraulic motor 1 is internally provided with the linkage shaft 11, and the linkage shaft 11 is connected between the rotor 12 and the driving shaft 13 of the cycloid hydraulic motor 1.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Claims

1. A linkage shaft is characterized by comprising a linkage shaft (11), wherein the linkage shaft (11) is connected between a rotor (12) of a cycloid hydraulic motor (1) and a driving shaft (13); both ends of universal driving shaft (11) all are equipped with external splines (111), the intertooth space angle of external splines (111) is 2.5-5, and adjacent intertooth space all is equipped with contact surface (1111), the tooth looks adaptation of internal splines on contact surface (1111) and hydraulic motor rotor (12) and drive shaft (13).

2. A linkage shaft according to claim 1, wherein the teeth of the external splines (111) are crowned teeth.

3. A universal joint shaft according to claim 1, characterised in that the contact surfaces (1111) are curved surfaces adapted to the teeth of the internal splines on the hydraulic motor rotor (12) and the drive shaft (13).

4. A coupling shaft according to claim 1, characterised in that the outer layer of the coupling shaft (11) has a shot-peening layer (112).

5. A gerotor hydraulic motor having a linkage shaft (11) according to any one of claims 1-4.