CN217055295U - Eccentric shaft sealing assembly of rotor engine and rotor engine - Google Patents

Abstract

The application provides an eccentric shaft sealing assembly of a rotary engine and the rotary engine; wherein, the eccentric shaft seal assembly of rotor engine includes: the first component is provided with a first eccentric shaft hole, and the axial direction of the first eccentric shaft hole deviates from the axial direction of the first component; the second component is coaxially arranged with the first component, a second eccentric shaft hole is formed in the second component, and the second eccentric shaft hole and the first eccentric shaft hole are coaxially arranged; the output shaft of the rotor engine sequentially passes through the first eccentric shaft hole and the second eccentric shaft hole. According to the eccentric shaft sealing assembly of the rotary engine and the rotary engine, the output shaft of the rotary engine can be sealed with the outer inclined cover, and the running stability of the rotary engine is guaranteed.

Description

Eccentric shaft sealing assembly of rotor engine and rotor engine

Technical Field

The application belongs to the technical field of engines, and particularly relates to an eccentric shaft sealing assembly of a rotary engine and the rotary engine.

Background

An engine (also commonly referred to as an internal combustion engine) drives a device connected to an output shaft thereof mainly by burning fossil fuel as a power source. For example, many vehicles (cars, motorcycles, buses, airplanes, helicopters, etc.) that travel in daily life are driven by an engine. The engines are mainly classified into a piston engine, a turbine engine, a rotary engine, and the like, which are concentrated from the beginning to the end.

When the rotor of the rotor engine rotates in the engine cylinder body, the rotor eccentrically rotates, and the rotor drives the output shaft to rotate and also eccentrically rotates.

After the eccentric output shaft extends out of an outer eccentric cover of the rotor engine, the eccentric output shaft and a shaft hole of the outer eccentric cover need to be sealed; therefore, it is a technical problem to be solved to provide a sealing assembly for an eccentric shaft.

SUMMERY OF THE UTILITY MODEL

The application provides an eccentric shaft seal assembly and rotor engine of rotor engine can seal between the output shaft of rotor engine and the outer inclined cover, has guaranteed the stability of rotor engine operation.

According to an embodiment of the first aspect of the present application, an eccentric shaft seal assembly of a rotary engine comprises:

the first component is provided with a first eccentric shaft hole, and the axial direction of the first eccentric shaft hole deviates from the axial direction of the first component;

the second component is coaxially arranged with the first component, a second eccentric shaft hole is formed in the second component, and the second eccentric shaft hole and the first eccentric shaft hole are coaxially arranged; an output shaft of the rotor engine sequentially passes through the first eccentric shaft hole and the second eccentric shaft hole.

In the embodiment of the application, the first eccentric shaft hole is arranged on the first assembly, the second eccentric shaft hole is arranged on the second assembly, and the output shaft (generally, the eccentric shaft) of the rotor engine sequentially passes through the first eccentric shaft hole and the second eccentric shaft hole and then is installed in the shaft hole on the outer eccentric cover of the rotor engine; like this, can be better seal the output shaft of rotary engine, promote rotary engine operation's stability.

In an optional design mode, first bearings are arranged in the first eccentric shaft hole and the second eccentric shaft hole, and the output shaft is connected with the first assembly and the second assembly through the first bearings.

Thus, friction between the output shaft and the first eccentric shaft hole and the second eccentric shaft hole can be reduced, energy loss of the rotary engine can be reduced, and output power of the rotary engine can be improved.

In an optional design mode, the first eccentric shaft hole comprises a first hole section and a second hole section communicated with the first hole section, and the first hole section is positioned at one end, facing away from the second assembly, of the first eccentric shaft hole; the aperture of the first pore section is smaller than the aperture of the second pore section.

In the embodiment of the application, the aperture of the first hole section is set to be smaller than that of the second hole section, so that the first hole section can form a convex edge at the end part of the second hole section, and the convex edge can be pressed on the end surface of the first bearing arranged in the first eccentric shaft hole, thereby limiting the degree of freedom of the first bearing in the axial direction; the situation that the first bearing is displaced along the axial direction of the first eccentric shaft hole and the second eccentric shaft hole can be avoided; thus, the stability of the operation of the rotary engine can be improved.

In an alternative design, the bore diameter of the second eccentric shaft bore is the same as the bore diameter of the second bore section; the inner wall of the second eccentric shaft hole is provided with a convex part, and the convex part is used for abutting against at least part of the end face of the first bearing.

The protruding part is arranged on the inner wall of the second eccentric shaft hole, so that the protruding part can be abutted against the end face of the first bearing, the axial freedom degree of the first bearing is limited, and the situation that the first bearing is displaced along the axial direction of the first eccentric shaft hole and the second eccentric shaft hole can be avoided; thus, the stability of the operation of the rotary engine can be improved.

In an alternative embodiment, a first bearing mounting region is located between the projection and the first bore section, and the end face of the first bore section is configured to abut against at least a portion of the end face of the first bearing.

Therefore, the situation that the first bearing is displaced along the axial direction of the first eccentric shaft hole and the second eccentric shaft hole can be avoided; thus, the stability of the operation of the rotary engine can be improved.

In an alternative embodiment, the side of the projection facing away from the first bore section is provided with an oil-sealing region, which is used to seal the output shaft.

Therefore, the output shaft can be sealed between the second eccentric shaft holes, the sealing performance of the rotary engine is improved, and the running stability of the rotary engine can be improved.

In an alternative design, a first concave part is arranged on the peripheral wall of the first component and faces to one end of the second component; a second sunken part is arranged on one end, facing the second assembly, of the peripheral wall of the second assembly; the first recessed portion is matched with the second recessed portion to form a second bearing mounting position, and the second bearing is used for being connected with an outer inclined cover assembly of the rotary engine.

Therefore, the second bearing is arranged in the first sunken part and the second sunken part, so that the second bearing can be conveniently positioned and limited, and the stability of the second bearing in operation is improved; thereby improving the stability of the operation of the rotary engine.

In an optional design mode, a first threaded hole is formed in the first assembly, a second threaded hole is formed in the second assembly, and the second threaded hole is matched with the second threaded hole; the first threaded hole is a counter bore, and the second threaded hole is a blind hole.

Like this, establish first screw hole into the counter bore, establish the second screw hole into the blind hole, with first subassembly and second subassembly installation assembly back, can sink into screw, bolt or screw rod to first screw hole in, can guarantee the planarization on whole rotor engine's eccentric shaft seal assembly surface, avoided taking place the condition of interfering with other spare parts.

In an alternative embodiment, the end face of the second component facing away from the first component is provided with relief grooves, which are formed by the end face of the second component being recessed.

Thus, the load of the rotary engine during rotation can be reduced, the energy loss of the rotary engine can be reduced, and the output power of the rotary engine is improved.

According to a second aspect of the embodiments of the present application, there is provided a rotary engine comprising the eccentric shaft seal assembly of the rotary engine provided in any one of the alternative designs of the first aspect of the embodiments of the present application.

The construction of the present application and other objects and advantages thereof will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of an eccentric shaft seal assembly of a rotary engine according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of an eccentric shaft seal assembly of a rotary engine according to an embodiment of the present disclosure;

FIG. 3 is a front view of an eccentric shaft seal assembly of a rotary engine provided in accordance with an embodiment of the present application;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is another schematic structural diagram of an eccentric shaft seal assembly of a rotary engine according to an embodiment of the present disclosure.

Description of reference numerals:

10-a first component; 20-a second component;

100-a first eccentric shaft hole; 200-a second eccentric shaft hole; 300-a first bearing mount area; 400-oil seal area;

101-a first bore section; 102-a second bore section; 103-a first recess; 104-a first threaded hole; 201-a projection; 202-a second recess; 203-a second threaded hole; 204 — lightening groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "inner," "outer," "upper," "bottom," "front," "back," and the like, if any, refer to the orientation or positional relationship shown in FIG. 1, which is used for ease of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

An engine (also commonly referred to as an internal combustion engine) drives a device connected to an output shaft thereof mainly by burning fossil fuel as a power source. For example, many vehicles (cars, motorcycles, buses, airplanes, helicopters, etc.) that travel in daily life are driven by an engine. The engines are mainly classified into a piston engine, a turbine engine, a rotary engine, and the like, which are concentrated from the beginning to the end.

When the rotor of the rotary engine rotates in the engine cylinder body, the rotor eccentrically rotates, and the rotor drives the output shaft to rotate eccentrically.

After the eccentric output shaft extends out of an outer eccentric cover of the rotor engine, the eccentric output shaft and a shaft hole of the outer eccentric cover need to be sealed; therefore, it is an urgent technical problem to provide a sealing assembly for an eccentric shaft.

Fig. 1 is a schematic structural diagram of an eccentric shaft seal assembly of a rotary engine provided in an embodiment of the present application, and fig. 2 is a schematic structural diagram of an exploded eccentric shaft seal assembly of a rotary engine provided in an embodiment of the present application.

Referring to fig. 1 and 2, an embodiment of the present application provides an eccentric shaft seal assembly of a rotary engine, including:

the first component 10, the first component 10 has a first eccentric shaft hole 100, the axial direction of the first eccentric shaft hole 100 is deviated from the axial direction of the first component 10.

Specifically, in the embodiment of the present application, the first component 10 may be made of a composite material, such as stainless steel or cast iron. In some possible examples, the first component 10 may also be made of other alloy materials, and in the embodiment of the present application, the specific material of the first component 10 is not limited.

Wherein the axial direction (specifically, the dashed line a in fig. 1) of the first eccentric shaft hole 100 is deviated from the axial direction (specifically, the dashed line i in fig. 1) of the first assembly 10; that is, in the embodiment of the present application, the axial direction of the first spool hole is located at a distance from the axial direction of the first member 10.

In a specific machining process, after the first component 10 is machined, a central point is determined in a radial direction of the first component 10 (except for an axis or a center of the first component 10), and then the first eccentric shaft hole 100 is formed according to the central point.

With continuing reference to fig. 1 and 2, an embodiment of the present application provides an eccentric shaft seal assembly of a rotary engine, further including: the second component 20, the second component 20 is arranged coaxially with the first component 10, the second component 20 is provided with a second eccentric shaft hole 200, and the second eccentric shaft hole 200 is arranged coaxially with the first eccentric shaft hole 100; the output shaft of the rotary engine passes through the first eccentric shaft hole 100 and the second eccentric shaft hole 200 in sequence.

Wherein the material of the second component 20 may be the same as or similar to the first component 10. In a specific arrangement, the first assembly 10 and the second assembly 20 may be detachably connected, so that the bearing on the output shaft of the rotary engine can be conveniently clamped between the first assembly 10 and the second assembly 20. The bearing can be conveniently mounted, dismounted and replaced.

It can be understood that the processing manner of the second eccentric shaft hole 200 may be the same as or similar to that of the first eccentric shaft hole 100, and specifically, reference may be made to the processing and forming manner of the first eccentric shaft hole 100, which is not described in detail in this embodiment of the application.

In the embodiment of the present application, by providing the first eccentric shaft hole 100 on the first component 10 and the second eccentric shaft hole 200 on the second component 20, the output shaft (usually, the eccentric shaft) of the rotary engine sequentially passes through the first eccentric shaft hole 100 and the second eccentric shaft hole 200, and then is installed in the shaft hole on the outer eccentric cover of the rotary engine; like this, can be better seal the output shaft of rotary engine, promote rotary engine operation's stability.

With continued reference to fig. 1 and 2, in some alternative examples of the embodiments of the present application, first bearings (not shown) are provided in the first eccentric shaft hole 100 and the second eccentric shaft hole 200, and the output shaft is connected to the first assembly 10 and the second assembly 20 through the first bearings.

Wherein, the first bearing may be a bearing used in the related art, such as a ball bearing or a double ball bearing, etc.

Thus, friction between the output shaft and the first and second eccentric shaft holes 100 and 200 can be reduced, energy loss of the rotary engine can be reduced, and output power of the rotary engine can be increased.

It should be noted that, in the practical case, after the first bearing is installed between the first component 10 and the second component 20, the first bearing may be further coated/covered/wrapped with lubricating oil. Therefore, the abrasion of the first bearing can be reduced, and the service life of the first bearing can be prolonged.

Fig. 3 is a front view of an eccentric shaft seal assembly of a rotary engine according to an embodiment of the present application, and fig. 4 is a sectional view taken along a line a-a in fig. 3.

Referring to FIGS. 2 and 4, in an alternative example of an embodiment of the present application, the first eccentric bore hole 100 includes a first bore section 101 and a second bore section 102 communicating with the first bore section 101, the first bore section 101 being located at an end of the first eccentric bore hole 100 facing away from the second assembly 20; the pore size of the first pore section 101 is smaller than the pore size of the second pore section 102.

In a specific arrangement, a first eccentric shaft hole 100 may be opened from a side of the first component 10 facing/facing the second component 20, that is, a second hole section 102 is opened first; then reducing the diameter of the opening hole, and continuously forming a first hole section 101; thereby forming the first eccentric shaft hole 100.

In the embodiment of the present application, the aperture of the first hole section 101 is set to be smaller than that of the second hole section 102, so that the first hole section 101 forms a convex edge at the end of the second hole section 102, and the convex edge can be pressed on the end surface of the first bearing disposed in the first eccentric shaft hole 100, thereby limiting the degree of freedom of the first bearing in the axial direction; the situation that the first bearing is displaced along the axial direction of the first eccentric shaft hole 100 and the second eccentric shaft hole 200 can be avoided; thus, the stability of the operation of the rotary engine can be improved.

With continued reference to fig. 2 and 4, the second eccentric shaft bore 200 has the same bore diameter as the second bore section 102; the inner wall of the second eccentric shaft hole 200 is provided with a convex part 201, and the convex part 201 is used for abutting against at least part of the end surface of the first bearing.

Specifically, in the embodiment of the present application, the protrusion 201 may be an annular protrusion 201 that is reserved on the inner wall of the second eccentric shaft hole 200 when the second eccentric shaft hole 200 is processed; in some possible examples, after the second eccentric shaft hole 200 is processed, a ring may be fixed to the inner sidewall of the second eccentric shaft hole 200 by welding, so as to form the protrusion 201.

The convex part 201 is arranged on the inner wall of the second eccentric shaft hole 200, so that the convex part 201 can be abutted against the end surface of the first bearing, the freedom degree of the first bearing in the axial direction is limited, and the situation that the first bearing is displaced along the axial directions of the first eccentric shaft hole 100 and the second eccentric shaft hole 200 can be avoided; thus, the stability of the operation of the rotary engine can be improved.

In some alternative examples, referring to fig. 4, in the embodiment of the present application, between the protrusion 201 and the first hole section 101 is a first bearing mounting area 300, and an end surface of the first hole section 101 is used for abutting against at least a part of an end surface of the first bearing.

Thus, the first bearing can be prevented from being displaced in the axial direction of the first eccentric shaft hole 100 and the second eccentric shaft hole 200; thus, the stability of the operation of the rotary engine can be improved.

During specific installation, the first component 10 may be firstly sleeved on the end surface of the first bearing; then, the second assembly 20 is sleeved from the other end of the first bearing, and the first assembly 10 and the second assembly 20 are fixed, thereby mounting the first bearing in the first bearing mounting region 300.

With continued reference to fig. 4, the side of the projection 201 facing away from the first bore section 101 is provided with an oil-sealed region 400, the oil-sealed region 400 being used for oil-sealing the output shaft.

In this way, the output shaft can be sealed between the second eccentric shaft holes 200, and the sealing performance of the rotary engine is improved, so that the stability of the operation of the rotary engine can be improved.

With continued reference to fig. 4, the first component 10 is provided with a first recess 103 on the peripheral wall thereof facing the second component 20; a second concave part 202 is arranged on the outer peripheral wall of the second component 20 and faces one end of the second component 20; the first recessed portion 103 and the second recessed portion 202 are matched to form a second bearing mounting position, and the second bearing is used for being connected with an outer inclined cover assembly of the rotary engine.

Specifically, in the embodiment of the present application, the first recess 103 may be formed by necking the peripheral wall of the first component 10 after the first component 10 is processed, for example, the peripheral wall of the first component 10 is cut, and the first recess 103 is formed.

In the embodiment of the present application, the forming manner of the second recess 202 may be the same as or similar to that of the first recess 103, and specifically, the forming manner of the first recess 103 may be referred to.

In addition, in the embodiment of the present application, the installation manner of the second bearing may be the same as or similar to the installation manner of the first bearing, and specific reference may be made to the foregoing detailed description about the installation manner of the first bearing, which is not described again in the embodiment of the present application.

In this way, the second bearing is arranged in the first recessed part 103 and the second recessed part 202, so that the second bearing can be conveniently positioned and limited, and the stability of the second bearing during operation is improved; thereby improving the stability of the operation of the rotary engine.

Referring to fig. 3 and 4, in an alternative design, the first component 10 is provided with a first threaded hole 104, the second component 20 is provided with a second threaded hole 203, and the second threaded hole 203 is matched with the second threaded hole; the first threaded hole 104 is a counterbore and the second threaded hole 203 is a blind hole.

Specifically, as shown in fig. 3 and 4, the first threaded hole 104 may be plural, and the plural first threaded holes 104 are arranged at intervals along the circumferential direction of the first member 10.

It is understood that the number of the second screw holes 203 may be the same as the number of the second screw holes 203. For example, 5 first threaded holes 104 are shown in fig. 3 as an example, and correspondingly, the number of the second threaded holes 203 may be 5.

In this way, the first threaded hole 104 is set as a counter bore, the second threaded hole 203 is set as a blind hole, and after the first component 10 and the second component 20 are mounted and assembled, a screw, a bolt or a screw can be sunk into the first threaded hole 104, so that the flatness of the surface of the eccentric shaft sealing assembly of the whole rotor engine can be ensured, and the condition of interference with other parts is avoided.

FIG. 5 is another schematic structural diagram of an eccentric shaft seal assembly of a rotary engine according to an embodiment of the present disclosure.

Referring to fig. 4 and 5, in an alternative example of the present application, the end surface of the second component 20 facing away from the first component 10 is provided with a relief groove 204, and the relief groove 204 is formed by recessing the end surface of the second component 20.

Specifically, in the embodiment of the present application, the lightening groove 204 may be formed by thinning/lightening the portion of the second component 20 where the second eccentric shaft hole 200 is not formed.

It can be understood that, in the embodiment of the present application, when the lightening groove 204 is provided, consideration needs to be given to the opening position where the lightening groove 204 is away from the second threaded hole 203, so as to ensure that the second threaded hole 203 is designed as a blind hole.

Thus, the load of the rotary engine during rotation can be reduced, the energy loss of the rotary engine can be reduced, and the output power of the rotary engine is improved.

The embodiment of the application also provides a rotary engine, which comprises the eccentric shaft sealing assembly of the rotary engine provided by any optional implementation mode of the embodiment of the application.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. An eccentric shaft seal assembly for a rotary engine, comprising:

a first component (10), wherein the first component (10) is provided with a first eccentric shaft hole (100), and the axial direction of the first eccentric shaft hole (100) is deviated from the axial direction of the first component (10);

the second component (20), the second component (20) and the first component (10) are coaxially arranged, a second eccentric shaft hole (200) is formed in the second component (20), and the second eccentric shaft hole (200) and the first eccentric shaft hole (100) are coaxially arranged; and the output shaft of the rotor engine sequentially passes through the first eccentric shaft hole (100) and the second eccentric shaft hole (200).

2. The eccentric shaft seal assembly of a rotary engine according to claim 1, wherein a first bearing is provided in the first eccentric shaft hole (100) and the second eccentric shaft hole (200), and the output shaft is connected to the first member (10) and the second member (20) through the first bearing.

3. The eccentric shaft seal assembly of the rotary engine according to claim 2, wherein the first eccentric shaft hole (100) comprises a first hole section (101) and a second hole section (102) communicating with the first hole section (101), the first hole section (101) being located at an end of the first eccentric shaft hole (100) facing away from the second component (20); the pore size of the first pore section (101) is smaller than the pore size of the second pore section (102).

4. The eccentric shaft seal assembly of a rotary engine according to claim 3, characterized in that the bore diameter of the second eccentric shaft hole (200) is the same as the bore diameter of the second bore section (102); and a protruding part (201) is arranged on the inner wall of the second eccentric shaft hole (200), and the protruding part (201) is used for abutting against at least part of the end face of the first bearing.

5. The eccentric shaft seal assembly of the rotary engine according to claim 4, characterized in that between the protrusion (201) and the first bore section (101) is a first bearing mounting area (300), and an end face of the first bore section (101) is adapted to abut against at least a part of an end face of the first bearing.

6. The eccentric shaft seal assembly of the rotary engine according to claim 4 or 5, characterized in that the side of the projection (201) facing away from the first bore section (101) is provided with an oil-sealed area (400), and the oil-sealed area (400) is used for oil-sealing the output shaft.

7. Eccentric shaft seal assembly of a rotary engine according to claim 1, characterised in that the peripheral wall of the first element (10) is provided with a first recess (103) at the end facing the second element (20); a second concave part (202) is arranged on the peripheral wall of the second component (20) and faces to one end of the second component (20); the first recess (103) and the second recess (202) are matched to form a second bearing mounting position, and the second bearing is used for being connected with an outer inclined cover assembly of a rotary engine.

8. The eccentric shaft seal assembly of a rotary engine according to claim 1, characterized in that a first threaded hole (104) is provided on the first component (10), a second threaded hole (203) is provided on the second component (20), and the second threaded hole (203) is matched with the first threaded hole (104);

the first threaded hole (104) is a counter bore, and the second threaded hole (203) is a blind hole.

9. Eccentric shaft seal assembly of a rotary engine according to claim 1, characterised in that the end face of the second component (20) facing away from the first component (10) is provided with a lightening groove (204), the lightening groove (204) being formed by a depression of the end face of the second component (20).

10. A rotary engine comprising an eccentric shaft seal assembly of a rotary engine according to any one of claims 1 to 9.

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