CN216198522U - Engine intermediate gear structure and engine - Google Patents

Abstract

The utility model relates to the technical field of engines, in particular to an engine intermediate gear structure and an engine, wherein the engine intermediate gear structure comprises a gear chamber, an intermediate gear shaft, a first fastener and an intermediate gear set, the gear chamber is arranged on an engine body and is provided with an installation cavity, and the wall of the installation cavity is provided with an installation hole; the intermediate gear shaft is provided with a step surface, one end of the intermediate gear shaft penetrates through the mounting hole, and the step surface abuts against the wall of the mounting cavity; the first fastener penetrates through the intermediate gear shaft along the extension direction of the intermediate gear shaft and penetrates through the mounting hole to be connected to an engine body, the intermediate gear shaft is locked and positioned, and the intermediate gear set is rotatably arranged on the intermediate gear shaft. According to the engine intermediate gear structure provided by the utility model, the intermediate gear shaft can be tightly and fixedly installed through the positioning of the step surface and the arrangement of the first fastening piece, so that the use of parts is reduced, the installation structure is simplified, and the risk of neglected installation of parts such as a cover plate and a double-headed pin is avoided.

Description

Engine intermediate gear structure and engine

Technical Field

The utility model relates to the technical field of engines, in particular to an engine intermediate gear structure and an engine.

Background

An intermediate gear for transmitting torque output from the crank gear to the timing gear related drive accessories is mounted in the gear chamber. In the prior art, an intermediate gear assembly rotates around an intermediate gear shaft, and the intermediate gear shaft penetrates through a cover plate and a gear chamber through a bolt and a positioning pin and is then fastened and positioned on a machine body of an engine. The structure is complicated, and part quantity is many, influences the efficiency of assembly in the assembling process, and easy neglected loading part.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an engine intermediate gear structure and an engine.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in one aspect, the present invention provides an engine intermediate gear structure, comprising:

the gear chamber is arranged on the engine body and provided with an installation cavity, and an installation hole is formed in the cavity wall of the installation cavity;

the intermediate gear shaft is provided with a step surface, one end of the intermediate gear shaft penetrates through the mounting hole, and the step surface abuts against the wall of the mounting cavity;

the first fastening piece penetrates through the intermediate gear shaft along the extension direction of the intermediate gear shaft and penetrates through the mounting hole to be connected to the engine body;

and the intermediate gear set is rotatably arranged on the intermediate gear shaft.

Preferably, the mounting cavity is provided with a mounting table in a protruding manner, the mounting hole is formed in the mounting table, and the step surface abuts against the table surface of the mounting table.

Preferably, the mounting table is provided with an oil groove communicated to the mounting hole.

Preferably, an oil hole is formed at one end of the intermediate gear shaft penetrating through the mounting hole.

Preferably, the intermediate gear set comprises a bushing and a driving wheel, the bushing is fixedly sleeved on the intermediate gear shaft, and the driving wheel is rotatably sleeved on the bushing.

Preferably, the transmission wheel is an inner layer chain wheel or an inner layer gear.

Preferably, the gear room includes gear room body and end cover, gear room body sets up on the engine organism, the end cover connect in gear room body, and with gear room body encloses and establishes into the installation cavity, the mounting hole is seted up in gear room body.

Preferably, the gear chamber body is made of an aluminum alloy material.

Preferably, a shaft shoulder is arranged at one end, far away from the mounting hole, of the intermediate gear shaft, and the shaft shoulder is used for limiting the position of the intermediate gear set.

On the other hand, the utility model also provides an engine, which comprises the engine intermediate gear structure.

The utility model has the beneficial effects that: according to the engine intermediate gear structure provided by the utility model, the intermediate gear shaft can be fixedly installed in a fixed position by positioning the stepped surface and matching with the first fastening piece, and compared with the structure that the intermediate shaft is fixedly fastened by arranging the cover plate between the intermediate shaft and the wall of the installation cavity and positioning the intermediate shaft through the fastening piece and the double-headed pin in the prior art, the engine intermediate gear structure provided by the utility model has the advantages that the use of parts is reduced, the manufacturing cost is reduced, the structure is simple, the assembling efficiency can be improved, and the part neglected installation risk is reduced.

The utility model also provides an engine, and the engine intermediate gear structure is arranged on the engine.

Drawings

FIG. 1 is a sectional view showing the overall construction of an intermediate gear structure of an engine according to the present invention;

fig. 2 is a structural view of a gear chamber body in an intermediate gear structure of an engine of the present invention.

In the figure:

100. an engine body;

200. a mounting cavity;

1. a gear chamber; 11. a gear chamber body; 111. mounting holes;

2. an intermediate gear shaft; 21. a step surface; 22. an oil hole; 23. a shaft shoulder;

3. a first fastener;

4. an intermediate gear set; 41. a bushing; 42. a driving wheel;

5. an installation table; 51. an oil groove.

Detailed Description

The technical scheme of the utility model is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-2, the present embodiment provides an intermediate gear structure of an engine, including a gear chamber 1, an intermediate gear shaft 2, a first fastener 3, and an intermediate gear set 4, where the gear chamber 1 is disposed on an engine body 100, the gear chamber 1 has an installation cavity 200, and a wall of the installation cavity 200 is provided with an installation hole 111; the intermediate gear shaft 2 is provided with a step surface 21, one end of the intermediate gear shaft 2 penetrates through the mounting hole 111, and the step surface 21 abuts against the wall of the mounting cavity 200 so as to limit the axial and radial mounting positions of the gear shaft; the first fastening piece 3 penetrates through the intermediate gear shaft 2 along the extending direction of the intermediate gear shaft 2 and penetrates through the mounting hole 111 to be connected to the engine body 100 to lock the intermediate gear shaft 2 and prevent the intermediate gear shaft 2 from rotating, so that the intermediate gear shaft 2 is locked and positioned, the intermediate gear set 4 is rotatably arranged on the intermediate gear shaft 2 and used for transmitting power output by a crankshaft gear of the engine to a timing gear of the engine, and the timing gear can sequentially drive the valves to open and close.

The engine intermediate gear structure that this embodiment provided, setting through the first fastener 3 of step face 21 location fit can tight fixed position installation intermediate gear axle 2, compare in prior art through set up the apron between the chamber wall at jackshaft and installation cavity 200, and through the structure of fastener and double-end round pin location fastening jackshaft, the motive intermediate gear structure that this embodiment provided need not additionally to set up apron and locating pin, the use of part has been reduced, manufacturing cost is reduced, moreover, the steam generator is simple in structure, can promote the efficiency of assembly, the part neglected loading risk has been reduced.

Specifically, in the present embodiment, the first fastening member 3 is an inner hexagonal bolt, a countersunk hole is formed in the intermediate gear shaft 2 along the extending direction of the intermediate gear shaft 2, the inner hexagonal bolt is inserted into the countersunk hole and connected to the engine body 100, and the inner hexagonal bolt does not protrude from the end surface of the intermediate gear shaft 2; further, in the present embodiment, three socket head cap bolts are provided to secure the connection and fastening of the intermediate gear shaft 2, and in other embodiments, a plurality of socket head cap bolts may be provided according to the size specification of the intermediate gear shaft 2 without any limitation.

Specifically, the mounting table 5 is convexly arranged on the cavity wall of the mounting cavity 200, the mounting hole 111 is formed in the mounting table 5, and the step surface 21 abuts against the table surface of the mounting table 5 to leave a space between the intermediate gear set 4 and the wall of the mounting cavity 200, so that the interference of the cavity wall of the mounting cavity 200 on the intermediate gear set 4 is prevented in the rotation process of the intermediate gear set 4.

Specifically, an oil groove 51 communicating with the mounting hole 111 is formed in the mounting table 5, an oil hole 22 is formed in one end, connected to the mounting hole 111, of the intermediate gear shaft 2, high-pressure lubricating oil forcibly lubricates the intermediate gear group 4 through the end surface of the gear chamber 1 and an internal oil passage of the intermediate gear shaft 2, the high-pressure lubricating oil after lubrication is converted into low-pressure lubricating oil, the low-pressure lubricating oil flows to the oil groove 51 through the oil hole 22, and flows out to an oil return path of the lubricating oil through the oil groove 51 to form circulation of an oil path, further, in the present embodiment, the mounting table 5 is cylindrical, two oil grooves 51 are symmetrically formed in the center of the mounting table 5, and in other embodiments, one or more oil grooves 51 can be formed according to actual needs.

Specifically, the intermediate gear set 4 comprises a bush 41 and a transmission gear, the bush 41 is fixedly sleeved on the intermediate gear shaft 2, the transmission gear 42 is rotatably sleeved on the bush 41, the bush 41 is made of a wear-resistant material, the transmission gear 42 can be prevented from being worn and torn by the intermediate gear shaft 2 in a long-time rotating process, the wear can be quickly replaced after the wear, the overall structure of the intermediate gear shaft 2 is not required to be replaced together, and the service life of the intermediate gear shaft 2 is prolonged.

Furthermore, the transmission gear is an inner layer chain wheel or an inner layer gear, the inner layer chain wheel and the chain can be used for transmission, the inner layer gear can be arranged on the bushing 41 in a rotating mode, and a transmission structure of an outer layer gear is sleeved on the inner layer gear.

Specifically, the gear chamber 1 includes a gear chamber body 11 and an end cover, the gear chamber body 11 is disposed on the engine body 100, the end cover is connected to the gear chamber body 11 and is enclosed with the gear chamber body 11 to form an installation cavity 200, the installation hole 111 is opened in the gear chamber body 11, the gear chamber body 11 is made of an aluminum alloy material, so that even if there is slight axial movement to make the intermediate gear set 4 collide with the installation table 5 to generate friction, the gear chamber body 11 is made of an aluminum alloy material to form a soft-hard friction pair with the intermediate gear set 4, and abrasion of the intermediate gear set 4 is not generated.

Specifically, the engine intermediate gear structure further includes a second fastening member, which is inserted into the gear chamber body 11 and connected to the engine body 100 to fix the gear chamber body 11 on the engine body 100.

Specifically, a shoulder 23 is provided at an end of the intermediate gear shaft 2 remote from the mounting hole 111, and the shoulder 23 is used to limit the position of the intermediate gear set 4.

The present embodiments also provide an engine, including but not limited to gasoline engines and diesel engines, having the above-described engine idler gear arrangement disposed thereon.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An engine intermediate gear structure, characterized by comprising:

the gear chamber (1) is arranged on an engine body (100), the gear chamber (1) is provided with an installation cavity (200), and the wall of the installation cavity (200) is provided with an installation hole (111);

the middle gear shaft (2) is provided with a step surface (21), one end of the middle gear shaft (2) penetrates through the mounting hole (111), and the step surface (21) abuts against the wall of the mounting cavity (200);

the first fastening piece (3) penetrates through the intermediate gear shaft (2) along the extension direction of the intermediate gear shaft (2) and penetrates through the mounting hole (111) to be connected to the engine body (100);

and the intermediate gear set (4) is rotationally arranged on the intermediate gear shaft (2).

2. The engine intermediate gear structure according to claim 1, characterized in that a mounting table (5) is convexly provided on a wall of the mounting cavity (200), the mounting hole (111) is opened in the mounting table (5), and the step surface (21) abuts against a table surface of the mounting table (5).

3. The engine intermediate gear structure according to claim 2, characterized in that an oil groove (51) communicating with the mounting hole (111) is opened in the mount table (5).

4. The engine intermediate gear structure according to claim 1, characterized in that an oil hole (22) is opened at one end of the intermediate gear shaft (2) passing through the mounting hole (111).

5. The engine intermediate gear structure according to claim 1, characterized in that the intermediate gear set (4) comprises a bushing (41) and a transmission wheel (42), the bushing (41) is fixedly sleeved on the intermediate gear shaft (2), and the transmission wheel (42) is rotatably sleeved on the bushing (41).

6. Engine intermediate gear structure according to claim 5, characterized in that the transmission wheel (42) is an inner sprocket or an inner gear.

7. The engine intermediate gear structure according to claim 1, characterized in that the gear chamber (1) includes a gear chamber body (11) and an end cover, the gear chamber body (11) is provided on the engine body (100), the end cover is connected to the gear chamber body (11) and encloses with the gear chamber body (11) to form the mounting cavity (200), and the mounting hole (111) is opened in the gear chamber body (11).

8. The engine intermediate gear structure according to claim 7, characterized in that the gear chamber body (11) is made of an aluminum alloy material.

9. The engine intermediate gear structure according to claim 1, characterized in that a shoulder (23) is provided at an end of the intermediate gear shaft (2) remote from the mounting hole (111), the shoulder (23) being for limiting a position of the intermediate gear set (4).

10. An engine comprising an engine intermediate gear structure according to any one of claims 1 to 9.

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