Safe starter of small-bore diesel engine

Abstract

The invention relates to a safe starter of a small-bore diesel engine, comprising a start seat, a unidirectional rotator and a common crank, wherein the start seat is arranged on the end surface of a gear cover; a bayonet pin is arranged on a fixing seat; the unidirectional rotator comprises a shell sleeve, a unidirectional rotating body and a unidirectional rotating slide sleeve; a starting sleeve of the common crank is sleeved into an inner hole of the unidirectional rotating slide sleeve, the left end surface of the unidirectional rotating slide sleeve is symmetrically provided with a unidirectional inner clamping groove, the left end of the shell sleeve is symmetrically provided with a unidirectional outer clamping groove which corresponds to the bayonet pin, and the axial space between the unidirectional outer clamping groove and the unidirectional inner clamping groove is L1. The safe starter can lead the crank to completely withdraw in a reversed turn angle of 20 degrees, structurally eliminates an injury accident caused by the reversed rotation of the crank, uses the prior common crank, is not only suitable for being matched with a novel diesel engine, but also is suitable for improving the safe start of the prior diesel engine, has simple structure, good technology, low cost, safe and reliable operation, practicability and popularization prospect.

Description

technical field [0001] The invention relates to a crank handle for starting a single-cylinder diesel engine, in particular to an anti-reverse crank handle matched with a single-cylinder small diesel engine (with a cylinder diameter less than 95 mm). Background technique [0002] At present, single-cylinder diesel engines are widely used except for electric starting, and they are all started by hand cranking, and the common cranking handles used do not have the anti-reverse function. When the ordinary crank handle is not started normally when the diesel engine is started, it is very easy to reverse, which often causes accidents caused by the reverse rotation of the crank handle. For this reason, the country has issued GB / T20064-2006 and ISO11102: 1997 "Reciprocating Internal Combustion Engine Handle Device" Mandatory standard, in the first part of the standard "Safety Requirements and Tests", it is stipulated that the single-cylinder diesel engine must achieve manual safe sta...

AI Technical Summary

Problems solved by technology

When the ordinary crank handle is not started normally when the diesel engine is started, it is very easy to reverse, which often causes accidents caused by the reverse rotation of the crank handle. For this reason, the country has issued GB / T20064-2006 and ISO11102: 1997 "Reciprocating Internal Combustion Engine Handle Device" Mandatory standard, in the first part of the standard "Safety Requirements and Tests", it is stipulated that the single-cylinder diesel engine must achieve manual safe start. This standard was enforced on July 1, 2007. In order to meet the requirements of this standard, people have thought about it There are few technical solutions. For example, Changchai Co., Ltd. discloses an "anti-reverse rocker handle" in patent No. ZL200820040856.1. Although it can better solve the anti-reverse problem during the starting process of the diesel engine, it is an integral structure , there is no inheritance from the existing ordinary crank, and the structure is very complicated, the manufacturing and assembly are difficult, the cost is high, and the cost of a single unit increases by 35 to 50 yuan, which is difficult for users to accept

Images