CN202646332U

CN202646332U - Small-displacement general power machine bent axle

Info

Publication number: CN202646332U
Application number: CN 201220238192
Authority: CN
Inventors: 蒋小雄; 盛明和; 曹正素
Original assignee: CHONGQING XIEMA MECHANICAL CRANKSHAFT CO LTD
Current assignee: CHONGQING XIEMA MECHANICAL CRANKSHAFT CO LTD
Priority date: 2012-05-25
Filing date: 2012-05-25
Publication date: 2013-01-02
Anticipated expiration: 2022-05-25

Abstract

In order to solve the problem of a small-displacement general power machine bent axle in the prior art that engine power cannot stably reach to design power, the utility model discloses a small-displacement general power machine bent axle which comprises a fly wheel end rod portion, a crank throw and an output end rod portion. The flywheel end rod portion and the output end rod portion are arranged on the same axis and also positioned at two ends of the crank throw, the axis of the crank throw and the axis of the flywheel end rod portion are not on the same straight line, the diameter D of the crank throw is 30.2 mm, the eccentric distance d is 27.5 mm, and the eccentric distance is the distance between the axis of the crank throw and the common axis of the two end rod portions. The small-displacement general power machine bent axle cannot affect crank strength, can stably reach t the design power and is convenient to process.

Description

A kind of small-displacement general power machine crank shaft

Technical field

The utility model relates to a kind of general dynamic engine components, particularly a kind of small-displacement general power machine crank shaft.

Background technique

The general dynamic motor generally is called logical machine for short.Bent axle is one of most important part in the logical machine.Its function is that the straight reciprocating motion with piston changes rotation motion into, and output torque, drives the external equipment that connects with it, drives in addition the control mechanisms such as distribution device, ignition mechanism, speed regulating mechanism.

Usually, small displacement small-displacement general power machine crank shaft structure is comprised of flywheel end bar section, output terminal bar section, rod journal and crank throw shoulder.Wherein, the special-shaped part that flywheel end/output terminal bar section links to each other with rod journal is called as the crank throw shoulder, and rod journal and the common part that forms of crank throw shoulder are collectively referred to as crank throw.Flywheel end bar section links to each other at the crank throw two ends on same axis and respectively with output terminal bar section, and the crank throw axis is called as the crank throw centripetal moment to the distance of two ends bar section common axis line, is equivalent to half of stroke of piston distance on the numerical value.The main link of flywheel end bar section is engine flywheel, and crank throw links to each other with engine link, the output terminal bar section output engine power that links to each other with the outside.The crank throw diameter D of prior art small-displacement general power machine crank shaft is 30 mm, and crank throw throw of eccentric d is 27 mm.When bent axle was worked, engine power can not be stablized and reaches design power.

Summary of the invention

Can not stablize the problem that reaches design power for the engine power that overcomes the existence of prior art small-displacement general power machine crank shaft, the utility model proposes a kind of small-displacement general power machine crank shaft.The utility model small-displacement general power machine crank shaft, comprise flywheel end bar section, crank throw and output terminal bar section, flywheel end bar section and output terminal bar section are on same axis and at the two ends of crank throw, the axis of the axis of crank throw and flywheel end bar section is not on same straight line, wherein, described crank throw diameter D is 30.2 mm, and throw of eccentric d is 27.5 mm; Described centripetal moment refers to that the crank throw axis is to the distance of two ends bar section common axis line.

The useful technique effect of the utility model small-displacement general power machine crank shaft is not affect crankshaft strength, stablizes to reach design power, and easy to process.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model small-displacement general power machine crank shaft.

Below in conjunction with drawings and the specific embodiments the utility model small-displacement general power machine crank shaft is described further.

Embodiment

Accompanying drawing 1 is the structural representation of the utility model small-displacement general power machine crank shaft, and among the figure, 1 is flywheel end bar section, and 2 is crank throw, and 3 is output terminal bar section, and d is throw of eccentric, and D is the crank throw diameter.As seen from the figure, the utility model small-displacement general power machine crank shaft, comprise flywheel end bar section 1, crank throw 2 and output terminal bar section 3, wherein, flywheel end bar section 1 is connected with engine flywheel, and crank throw 2 links to each other with connecting rod, the output terminal bar section 3 output engine power that links to each other with the outside, described crank throw diameter D is 30.2 mm, and throw of eccentric d is 27.5 mm.The utility model small-displacement general power machine crank shaft compared with prior art, it is 30.2 mm that crank throw diameter D is increased to from 30 mm, throw of eccentric d is that 27 mm are increased to 27.5 mm, and therefore, the arm of force of crank throw 2 increases, thereby so that the output torque of the engine link that links to each other with crank throw obtains increasing, so that engine power increases, in the specific implementation, do not affect on the basis of crankshaft strength, the stable design power that reached, and processing is also rather convenient.

Claims

1. small-displacement general power machine crank shaft, comprise flywheel end bar section, crank throw and output terminal bar section, flywheel end bar section and output terminal bar section are on same axis and at the two ends of crank throw, the axis of the axis of crank throw and flywheel end bar section is not on same straight line, it is characterized in that, described crank throw diameter D is 30.2 mm, and throw of eccentric d is 27.5 mm; Described centripetal moment d refers to that the crank throw axis is to the distance of two ends bar section common axis line.