CN213654939U

CN213654939U - Axial thrust structure of camshaft of single-cylinder diesel engine

Info

Publication number: CN213654939U
Application number: CN202022806607.2U
Authority: CN
Inventors: 王海平; 王德
Original assignee: Cnooc Kechuang Engine Manufacturing Co ltd
Current assignee: Cnooc Kechuang Engine Manufacturing Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-09
Anticipated expiration: 2030-11-27

Abstract

An axial thrust structure of a camshaft of a single cylinder diesel engine comprises a camshaft main body, a first thrust plate, a second thrust plate, a first fixing piece, a camshaft cover, a sealing ring, a second fixing piece and a gasket, wherein a thrust groove is formed in the camshaft main body, a first thrust plate and a second thrust plate are embedded and matched in the thrust groove, the matching ends of the first thrust plate, the second thrust plate and the thrust groove are of arc-head-shaped structures, the first thrust plate and the second thrust plate are symmetrically arranged and fixedly provided with fixing through holes on the first thrust plate and the second thrust plate, the first thrust plate and the second thrust plate are fixed on a machine body through the fixing through holes by the first fixing piece, the camshaft cover is movably arranged on the outer side of the camshaft main body, the camshaft cover is of a hollow concave cover body structure, and a mounting groove is fixedly provided on the end of the camshaft cover, which is opposite to the camshaft main body, the mounting groove is internally embedded with a sealing ring which is a rubber sealing ring.

Description

Axial thrust structure of camshaft of single-cylinder diesel engine

Technical Field

The utility model relates to a single cylinder diesel technical field, in particular to single cylinder diesel camshaft axial thrust structure.

Background

Most of the existing camshaft thrust structures of single-cylinder diesel engines use a thrust plate, and the thrust plate is sleeved on a camshaft and then eccentrically enters a camshaft thrust groove, so that the contact surface of the thrust plate and the camshaft thrust groove is less than half of the side surface of the groove, the contact area is small, and the pressure is large; the stress point deviates from the center to generate an eccentric moment on the thrust groove, so that the thrust groove bank is easy to break; the axial thrust structure of the camshaft of the single-cylinder diesel engine is specially designed from the practical processing angle, so that the requirements of volume production and improvement of the installation working efficiency are met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a single cylinder diesel camshaft axial thrust structure to solve the problem that proposes among the above-mentioned background art.

The utility model aims at realizing through the following technical scheme: an axial thrust structure of a camshaft of a single cylinder diesel engine comprises a camshaft main body, a first thrust plate, a second thrust plate, a first fixing piece, a camshaft cover, a sealing ring, a second fixing piece and a gasket, wherein a thrust groove is formed in the camshaft main body, the first thrust plate and the second thrust plate are embedded and matched in the thrust groove, the matching ends of the first thrust plate and the second thrust plate and the thrust groove are of arc-head-shaped structures, the first thrust plate and the second thrust plate are symmetrically arranged and are fixedly provided with fixing through holes on the first thrust plate and the second thrust plate, and the first thrust plate and the second thrust plate penetrate through the fixing through holes through the first fixing piece and are fixed on a machine body;

and the cam shaft cover is of a hollow sunken cover body structure, the end on one side of the cam shaft cover opposite to the cam shaft body is fixedly provided with a mounting groove, a sealing ring is embedded in the mounting groove, and the sealing ring is a rubber sealing ring.

As a preferred technical scheme: the number of the thrust grooves is two, and the thrust grooves are symmetrically arranged on the camshaft main body.

As a preferred technical scheme: the depth of the thrust groove is one third of the shaft radius of the camshaft main body, and the bottom of the thrust groove is in arc transition.

As a preferred technical scheme: the mounting groove sets up two side by side, and two mounting grooves adopt different width and groove depth.

As a preferred technical scheme: the camshaft cover is fixedly provided with a fixing hole and fixedly arranged on the machine body through a second fixing piece.

As a preferred technical scheme: the first fixing piece and the second fixing piece are welded with the machine body into a whole through bolts or cast iron fixing rods.

As a preferred technical scheme: install the packing ring between second mounting and the camshaft cover, the packing ring is the rubber packing ring, and the packing ring sets up well two-layer at least.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being reasonable in structure and simple in operation, it is convenient to make up, and thrust plate and camshaft thrust groove side full contact increase area of contact reduce contact pressure, eliminate eccentric moment in order to improve the reliability, and the cost is lower simultaneously, and the practicality is stronger.

Drawings

FIG. 1 is a general schematic view of the present invention;

fig. 2 is a plan sectional view of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

As shown in fig. 1-2, an axial thrust structure of a camshaft of a single cylinder diesel engine includes a camshaft main body 1, a first thrust plate 2, a second thrust plate 3, a first fixing member 4, a camshaft cover 5, a seal ring 6, a second fixing member 7, and a gasket 8, wherein a thrust groove is formed on the camshaft main body 1, a first thrust plate 2 and a second thrust plate 3 are embedded and matched in the thrust groove, the mating ends of the first thrust plate 2, the second thrust plate 3 and the thrust groove are in an arc-head-shaped structure, the first thrust plate 2 and the second thrust plate 3 are symmetrically arranged and are fixedly provided with fixing through holes on the first thrust plate 2 and the second thrust plate 3, and the first thrust plate 2 and the second thrust plate 3 are fixed on a machine body through the fixing member 4 by passing through the fixing through holes;

be located the activity of the 1 outside of camshaft main part is equipped with camshaft cover 5, camshaft cover 5 is hollow sunken lid structure, and is located camshaft cover 5 and the fixed mounting groove that has served of the relative one side of camshaft main part 1, and it has sealing washer 6 to inlay in the mounting groove, sealing washer 6 is rubber seal.

In the embodiment, the number of the thrust grooves is two, and the thrust grooves are symmetrically arranged on the camshaft main body 1.

In the present embodiment, the depth of the thrust groove is one third of the shaft radius of the camshaft body 1, and the bottom of the thrust groove is in a circular arc transition.

In this embodiment, the mounting grooves are arranged in parallel, and the two mounting grooves have different widths and groove depths.

In this embodiment, the camshaft cover 5 is fixedly provided with a fixing hole, and the camshaft cover 5 is fixedly mounted on the machine body through a second fixing member 7.

In this embodiment, the first fixing member 4 and the second fixing member 7 are welded to the machine body as a whole by bolts or cast iron fixing rods.

In this embodiment, a gasket 8 is installed between the second fixing member 7 and the camshaft cover 5, the gasket 8 is a rubber gasket, and the gasket 8 is at least provided with two layers.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An axial thrust structure of a camshaft of a single cylinder diesel engine is characterized by comprising a camshaft main body (1), a first thrust plate (2), a second thrust plate (3), a first fixing piece (4), a camshaft cover (5), a sealing ring (6), a second fixing piece (7) and a gasket (8), a thrust groove is formed on the camshaft main body (1), a first thrust plate (2) and a second thrust plate (3) are embedded and matched in the thrust groove, the matching ends of the first thrust plate (2), the second thrust plate (3) and the thrust groove are arc-head-shaped structures, the first thrust plate (2) and the second thrust plate (3) are symmetrically arranged, and fixed through holes are fixedly arranged on the first thrust plate (2) and the second thrust plate (3), the first thrust plate (2) and the second thrust plate (3) penetrate through the fixing through hole through a first fixing piece (4) and are fixed on the machine body;

be located camshaft main part (1) outside activity is equipped with camshaft cover (5), camshaft cover (5) are hollow sunken lid structure, and are located camshaft cover (5) and camshaft main part (1) relative one side serve fixed open have the mounting groove, inlay in the mounting groove and have sealing washer (6), sealing washer (6) are rubber seal.

2. The axial thrust structure of the camshaft of the single cylinder diesel engine according to claim 1, characterized in that the thrust grooves are arranged in two and are symmetrically arranged on the camshaft main body (1).

3. The axial thrust structure of the camshaft of the single cylinder diesel engine according to claim 1, characterized in that the depth of the thrust groove is one third of the shaft radius of the camshaft main body (1), and the bottom of the thrust groove is in a circular arc transition.

4. The axial thrust structure of the camshaft of the single cylinder diesel engine according to claim 1, wherein two installation grooves are arranged in parallel, and the two installation grooves have different widths and groove depths.

5. The axial thrust structure of the camshaft of the single cylinder diesel engine according to claim 1, characterized in that the camshaft cover (5) is fixed with a fixing hole, and the camshaft cover (5) is fixedly installed on the engine body through a second fixing member (7).

6. The axial thrust structure of the camshaft of the single cylinder diesel engine according to claim 1, characterized in that the first fixing member (4) and the second fixing member (7) are welded with the engine body as a whole by bolts or cast iron fixing rods.

7. The axial thrust structure of the camshaft of the single cylinder diesel engine according to claim 1, characterized in that a gasket (8) is installed between the second fixing member (7) and the camshaft cover (5), the gasket (8) is a rubber gasket, and the gasket (8) is provided with at least two layers.