Reversals-preventing start crank of single cylinder diesel

Abstract

The invention relates to a reversal-preventing start crank of a single cylinder diesel, comprising a handle connecting bar, a start mandrel, a claw sleeve, a unidirectional rotating bearing, a belt trough mandrel sleeve, a positioning wheel, a spring and a thrust block which are assembled into a specific reversal-preventing structure. The reversal-preventing start crank can normally and manually start the diesel when rotating clockwise, when the diesel can not be normally started, the start mandrel can drive the positioning wheel to reversely rotate, and the thrust block can be pressed to oppress the spring and a rotation angle is less than 15 DEG in the process, therefore the reverse rotation energy of the diesel can be released; a reverse rotation angle is less than 15 DEG in the process, therefore wounding accidents caused in such a way that the diesel can not be normally started to drive the crank to reversely rotate are eliminated from the structure, and the safe start of the diesel is ensured. The invention has the advantages of simple structure, good processing technology, low cost, convenient installation and use, and the like.

Description

technical field [0001] The invention relates to a crank handle for starting a single-cylinder diesel engine, in particular to a crank handle with anti-reverse function. Background technique [0002] In addition to electric starting, single-cylinder diesel engines are all started by hand cranking. At present, ordinary cranking handles used with single-cylinder diesel engines 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 start. This standard was enforced on July 1, 2007. In order to meet the req...

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, but so far, none of them has been recognized by users

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 diesel engines, its structure is very complicated and difficult to manufacture. , the assembly process is complicated, the cost is high, and the cost of a single unit increases by 35 to 50 yuan, which is difficult for users to accept. Although the diesel engine industry association also helps recommend it, diesel engine manufacturers are unwilling to implement this technology.

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