CN213839424U

CN213839424U - Eccentric gear

Info

Publication number: CN213839424U
Application number: CN202022801176.0U
Authority: CN
Inventors: 赵新年; 李军生
Original assignee: Shaanxi Xinnian Power Technology Co ltd
Current assignee: Shaanxi New Year Power Technology Group Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-30
Anticipated expiration: 2030-11-27

Abstract

The utility model provides an eccentric gear, including moving gear and fixed gear, the fixed gear is fixed on the end cover of rotor, and moving gear is located the tip of axle, makes an organic whole with the axle, and moving gear is the external tooth, and the fixed gear is the internal tooth, and the tooth ratio of internal tooth and external tooth is (3 ~ 3.1): 2; the middle part of the shaft is provided with an external spline, and the external spline is matched and combined with an internal spline at the center of the rotor to drive the rotor to move in the three-petal-shaped inner cavity of the stator. In the eccentric gear provided by the utility model, the small gear is fixed on the rotor and rotates around the track; the structure preferably adopts an 8-shaped rotor, rotates in a three-lobe stator, brings more advantages in the aspects of processing, sealing and the like, and is lightened.

Description

Eccentric gear

Technical Field

The utility model belongs to the technical field of machinery, concretely relates to rotor structure with engine.

Background

Rotary engines use rotary motion of a rotor within a cylinder to control compression and exhaust, unlike conventional reciprocating piston engines. Among them, Wankel (Felix Wankel, 1902-laid 1988), which employs the rotary motion of a delta rotor to control compression and exhaust, has been installed and used in automobiles through further improvement of madada, and has been successful in automobile events in the nineties due to the advantages of light weight, large power output, smooth operation, etc.

Wankel and mazida rotary engines have triangular rotors, fixed pinions and rotating large gears (gears with a large number of teeth). This configuration, while having the advantage of running smoothly, increases the difficulty of sealing. The sealing problem can be overcome by changing the design of the moving gear and the fixed gear, but enough power output of the rotary engine is ensured.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims at providing an eccentric gear for the rotor of a rotary engine.

The above objects of the present invention are achieved by the following technical solutions:

an eccentric gear comprises a moving gear and a fixed gear, wherein the fixed gear is fixed on an end cover of a rotor, the moving gear is positioned at the end part of a shaft and is integrated with the shaft, the moving gear is external teeth, the fixed gear is internal teeth, and the gear ratio of the internal teeth to the external teeth is 3: 2;

the middle part of the shaft is provided with an external spline, and the external spline is matched and combined with an internal spline at the center of the rotor to drive the rotor to move in the three-petal-shaped inner cavity of the stator.

In the rotor engine of the utility model, a stator is fixed in a shell and is provided with a three-petal inner cavity; the gear shaft is fixedly connected with a rotor of the rotor engine and drives the rotor to move in the three-petal-shaped inner cavity.

The utility model discloses an optimized technical scheme includes, the centre-to-centre spacing of moving gear and fixed gear is 12mm, 16mm, 20mm or 25 mm.

Wherein the outer diameter of the shaft is 96-188 mm.

The utility model discloses a following several kinds of preferred structural parameter: the external diameter of axle is 96mm or 120mm, external tooth and internal tooth are 24 teeth and 36 teeth respectively, the external diameter of axle is 150mm, external tooth and internal tooth are 35 teeth and 54 teeth respectively, the external diameter of axle is 187.5mm, external tooth and internal tooth are 36 teeth and 54 teeth respectively.

Further, an oil hole is formed in the shaft and located below the moving gear.

The utility model discloses an optimal technical scheme does, be provided with the screw on the fixed gear edge, the fixed gear passes through the end cover connection of bolt and rotor.

The utility model has the advantages that:

in the eccentric gear provided by the utility model, the small gear is fixed on the rotor and rotates around the track, and the big gear is fixed on the end cover; the structure preferably adopts an 8-shaped rotor, the rotor rotates in the three-lobe stator, the output of the engine is larger, more advantages are brought to the aspects of processing, sealing and the like, and the weight is also reduced.

The eccentric gear with the structure has the advantages that the shaft is soaked in engine oil, so that the lubricating property is better.

Drawings

FIG. 1: the utility model discloses centraxonial three-dimensional view.

FIG. 2: is a three-dimensional view of the fixed gear.

FIG. 3 is a top view of the combination of the moving and fixed gears.

In the figure, the position of the upper end of the main shaft,

1 is moving gear, 2 is the fixed gear, 3 is the axle, 4 is the machine oil hole, 5 is the external splines, 6 is the screw.

Detailed Description

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and the connection may be an electrical connection, a communication connection or a mechanical connection; the terminology used is for the purpose of describing the invention only and is not intended to be limiting, nor is it intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation; and therefore should not be construed as limiting the scope of the invention.

In the examples, the technical means used are all the technical means existing in the field, unless otherwise specified.

Example 1:

an eccentric gear comprises a moving gear 1 and a fixed gear 2, wherein the fixed gear 2 is fixed on an end cover of a rotor, the moving gear 1 is positioned at the end part of a shaft 3 and is integrated with the shaft, the moving gear is external teeth, the fixed gear is internal teeth, and the gear ratio of the internal teeth to the external teeth is 3:2 (see figure 3);

referring to fig. 1, the middle part of the shaft 3 is provided with an external spline 5, and the external spline 5 is matched and combined with an internal spline at the center of the rotor to drive the rotor to move in the three-petal-shaped inner cavity of the stator.

The utility model discloses an optimized technical scheme includes, the centre-to-centre spacing of moving gear and fixed gear is 12mm, 16mm, 20mm or 25 mm. Wherein the outer diameter of the shaft is 96-188 mm.

This embodiment provides a set of structural parameters: the outer diameter of the shaft is 96mm, and the outer teeth and the inner teeth are 24 teeth and 36 teeth, respectively. The center distance between the movable gear and the fixed gear is 12 mm.

Further, an oil hole 4 is formed in the shaft and located below the moving gear.

Referring to fig. 2, the edge of the fixed gear is provided with a screw hole 6, and the fixed gear is connected with the end cover of the rotor through a bolt.

Example 2

the middle part of the shaft 3 is provided with an external spline 5, and the external spline 5 is matched and combined with an internal spline at the center of the rotor to drive the rotor to move in the inner cavity of the three-petal shape of the stator.

The utility model discloses an optimized technical scheme includes, the centre-to-centre spacing of moving gear and fixed gear is 20 mm.

Wherein the outer diameter of the shaft is 96-188 mm.

This embodiment provides a set of structural parameters: the outer diameter of the shaft is 150mm, and the outer teeth and the inner teeth are 35 teeth and 54 teeth, respectively.

Further, an oil hole 4 is formed in the shaft and located below the moving gear. And the edge of the fixed gear is provided with a screw hole 6, and the fixed gear is connected with the end cover of the rotor through a bolt.

Example 3

The utility model discloses an optimized technical scheme includes, the centre-to-centre spacing of moving gear and fixed gear is 25 mm.

Wherein the outer diameter of the shaft is 96-188 mm.

This embodiment provides a set of structural parameters: the shaft has an outer diameter of 187.5mm and the outer and inner teeth are 36 and 54 teeth, respectively.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An eccentric gear is characterized by comprising a moving gear and a fixed gear, wherein the fixed gear is fixed on an end cover of a rotor, the moving gear is positioned at the end part of a shaft and is integrated with the shaft into a whole, the moving gear is external teeth, the fixed gear is internal teeth, and the gear ratio of the internal teeth to the external teeth is (3-3.1): 2;

2. The eccentric gear according to claim 1, characterized in that the distance between the centers of the moving and fixed gears is 12mm, 16mm, 20mm or 25 mm.

3. The eccentric gear according to claim 1, characterized in that the outer diameter of the shaft is 96-188 mm.

4. The eccentric gear according to claim 3, characterized in that the shaft has an outer diameter of 96mm or 120mm, the outer and inner teeth are 24 and 36 teeth, respectively, the shaft has an outer diameter of 150mm, the outer and inner teeth are 35 and 54 teeth, respectively, the shaft has an outer diameter of 187.5mm, and the outer and inner teeth are 36 and 54 teeth, respectively.

5. The eccentric gear according to claim 1, wherein an oil hole is formed in the shaft, and the oil hole is located below the moving gear.

6. The eccentric gear according to claim 1, wherein the edge of the fixed gear is provided with a screw hole, and the fixed gear is connected with the end cover of the rotor through a bolt.