CN201246194Y

CN201246194Y - Distribution transmission mechanism of diesel engine

Info

Publication number: CN201246194Y
Application number: CNU2008201892453U
Authority: CN
Inventors: 范兆基; 彭继源; 吴远波
Original assignee: DELI DIESEL ENGINE Co Ltd SHUNDE DISTRICT FOSHAN CITY
Current assignee: Guangdong Delux Diesel Engine Co., Ltd.
Priority date: 2008-08-28
Filing date: 2008-08-28
Publication date: 2009-05-27
Anticipated expiration: 2018-08-28

Abstract

The utility model relates to an air-distribution and transmission mechanism of a diesel engine, which comprises a swing arm connected with a cam and a rocker arm connected with a push rod, the middle part of the swing arm is mounted in the support of the swing arm through a shaft journal of the swing arm, one end of the swing arm is connected with the cam, the other end thereof is connected with the push rod which moves linearly, and the swing arm takes a Y shape. The swing arm comprises an admission cam swing arm and an exhaust cam swing arm. The support of the swing arm is fixed on a cylinder block through a fastening screw and a washer. The cam, the swing arm, the push rod and the rocker arm are axially arranged on an identical side. The lower end of the swing arm is in close contact with the surface of the cam, and the rotary motion of the cam is converted to be the swing of the swing arm, so that the up-and-down movement of the push rod can be controlled, and the action of the rocker arm is further controlled. Therefore, a tappet is saved, the mechanism is simplified, the mass of reciprocating movement is greatly reduced, the running precision is improved, meanwhile, the manufacturing cost is reduced, and the utility model is favorable for improving the design speed of the diesel engine and the engine performance, and prolonging the service life.

Description

A kind of distribution driving mechanism of diesel engine

Technical field

The utility model relates to the distribution driving mechanism of a kind of diesel engine, particularly a kind of diesel engine.

Background technique

At present, diesel engine distribution driving mechanism common on the market is made up of cam, tappet, push rod, rocking arm, valve and valve spring etc., and all be to be arranged in the side vertically, the diesel engine boundary dimension of this structure is bigger, cylinder body, air cylinder head structure more complicated, and particularly the tappet part quality is big, make the moment of inertia of gas distribution system strengthen, the height of required precision simultaneously, thus the processing and fabricating cost increased, and adverse effect is arranged to improving rotating speed.

At this situation, some manufacturer has done a little improvement, as disclosing a kind of single cylinder diesel starter among the Chinese patent literature CN2597691Y, comprise housing, main shaft, energy storage spring, free wheel device, main shaft and housing flexibly connect, one end of main shaft is equipped with and can does the swing arm that circumferential and axial move and link to each other with the backguy of diesel engine decompressor flexible axle around main shaft, swing arm is provided with the block that joins with driving lever, energy storage spring is housed respectively on the main shaft, free wheel device and ratchet, the outer hub of free wheel device is provided with tooth, and be meshed with transition gear, transition gear is provided with cam, cam and arc rocking arm join, arc rocking arm and housing flexibly connect, the ratchet separating arm is equipped with in the activity of going back on the housing, one end of arc rocking arm be equipped with can with the ratchet of ratchet separating arm interlock, handle cam respectively with the ratchet separating arm, arc rocking arm, the ratchet backstopping device joins, the other end of ratchet backstopping device is against on the ratchet of ratchet, the swinging end of balanced lever that can relative swing with housing and the free end of arc rocking arm are oppositely arranged, and balanced lever links to each other with the wind spring outer end.The single cylinder diesel starter of this structure complex structure that remains unchanged, fabricating cost is high.

The model utility content

The purpose of this utility model aim to provide a kind of simple and reasonable, volume is little, reciprocating mass is few, fabricating cost is low, the distribution driving mechanism of the diesel engine of long service life, to overcome deficiency of the prior art.

Press the distribution driving mechanism of a kind of diesel engine of this purpose design, comprise the swing arm that joins with cam, the rocking arm that joins with push rod, its structure characteristic is that the swing arm middle part is journaled in the swing arm bearing by swing arm shaft, swing arm one end and cam join, and the push rod of the other end and moving linearly joins.

Described swing arm is Y-shaped.

Described swing arm comprises intake cam swing arm and exhaust cam swing arm.

Described swing arm bearing is fixed on the cylinder block by set screw and packing ring.

The homonymy setting vertically of described cam, swing arm, push rod and rocking arm.

Swing arm lower end in the utility model closely contacts with cam face, rotatablely moving of cam changed into the swing of swing arm, with the elevating movement of control push rod, and then the action of control rocking arm, tappet saved, simplified mechanism, reciprocating mass reduces greatly, and running precision is improved, and has also reduced fabricating cost simultaneously, help improving the design speed and the complete machine performance of diesel engine, and improved working life.

Description of drawings

Fig. 1 is the utility model one embodiment's broken section structural representation.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

Referring to Fig. 1, the distribution driving mechanism of this diesel engine, the cam 5, swing arm 1, push rod 6 and the rocking arm that comprise homonymy setting vertically, swing arm 1 joins with cam 5; rocking arm and push rod 6 join, and the swing arm middle part of Y shape is journaled in the swing arm bearing 2 by swing arm shaft 3, and swing arm one end and cam join; the push rod of the other end and moving linearly joins, and swing arm bearing 2 is fixed on the cylinder block by set screw and packing ring 4.Swing arm 1 wherein comprises intake cam swing arm and exhaust cam swing arm.Each arrow among the figure is represented the moving direction of each self-corresponding component respectively.

Claims

1. the distribution driving mechanism of a diesel engine, comprise the swing arm (1) that joins with cam (5), the rocking arm that joins with push rod (6), it is characterized in that the swing arm middle part is journaled in the swing arm bearing (2) by swing arm shaft (3), swing arm one end and cam join, and the push rod of the other end and moving linearly joins.

2. according to the distribution driving mechanism of the described diesel engine of claim 1, it is characterized in that described swing arm (1) is Y-shaped.

3. according to the distribution driving mechanism of claim 1 or 2 described diesel engines, it is characterized in that described swing arm (1) comprises intake cam swing arm and exhaust cam swing arm.

4. according to the distribution driving mechanism of the described diesel engine of claim 1, it is characterized in that described swing arm bearing (2) is fixed on the cylinder block by set screw and packing ring (4).

5. according to the distribution driving mechanism of the described diesel engine of claim 1, it is characterized in that described cam (5), swing arm (1), push rod (6) and rocking arm homonymy setting vertically.