CN203500308U

CN203500308U - High-strength crank shaft front end structure

Info

Publication number: CN203500308U
Application number: CN201320502535.XU
Authority: CN
Inventors: 高原
Original assignee: Anhui Tianli Engine Co Ltd
Current assignee: Anhui Tianli Engine Co Ltd
Priority date: 2013-08-18
Filing date: 2013-08-18
Publication date: 2014-03-26
Anticipated expiration: 2023-08-18

Abstract

The utility model discloses a high-strength crank shaft front end structure. The high-strength crank shaft front end structure comprises a crank shaft, a crank shaft timing gear, a crank shaft engine oil pump gear, a crank shaft flange and a belt pulley, wherein the crank shaft timing gear and the crank shaft engine oil pump gear are sequentially connected to the front end of the crank shaft by flat keys; the crank shaft flange is sleeved at the most front end of the crank shaft by a thermal sleeving process; the crank shaft flange and the front end of the crank shaft are in big interference fit; the belt pulley is connected with the crank shaft flange by a bolt. The high-strength crank shaft front end structure has the beneficial effects that the crank shaft timing gear and the crank shaft engine oil pump gear can be fixed by thermally sleeving the crank shaft flange, more importantly, the friction force transmission torque of an interference fit combined surface between the flange and the crank shaft can also substitute the traditional ordinary flat key transmission, slippage is not caused when an engine outputs large torque, and a major accident that the keys of the crank shaft roll is not caused.

Description

A kind of high strength crankshaft front end structure

Technical field

The utility model relates generally to diesel engine field, and specifically a kind of high strength crankshaft front end structure, mainly meets high-power walking reaper motor head power output needs used, and structure is ingenious.

Background technique

Diesel engine is mainly applicable to heavy truck, agricultural equipment, engineering machinery etc., and above equipment working environment is relatively severe, and engine output torque requires higher, requires more harsh under the rugged environment that especially agricultural equipment constantly converts in farmland.The engine crankshaft front end power output structure of common agricultural harvester type be belt pulley with bent axle between be to be connected with a king-bolt with parallel key, this structure can meet fraction horsepower engine demand, but very easily there is the cut peril of flat key in high-powered engine after work a period of time, cause reaper power output system to interrupt, cannot normally work, so be badly in need of finding in this case a kind of new structure that can substitute traditional flat key Placement.

Model utility content

The utility model object is exactly to stop agricultural equipment with diesel engine, under high-load condition, to work and cause bent axle to roll the generation of key accident, reduces the unnecessary loss that enterprise, user suffer.

The utility model is achieved through the following technical solutions: a kind of high strength crankshaft front end structure, comprise bent axle, crankshaft timing gear, oil pump gear, crankshaft flange and belt pulley, described crankshaft timing gear and oil pump gear are connected to crankshaft front end in turn by flat key, described crankshaft flange is assemblied in bent axle foremost by hot cover process, described crankshaft flange and crankshaft front end are large interference fit, and described belt pulley is connected with crankshaft flange by bolt.

The beneficial effects of the utility model are: selecting not only of hot jacket crankshaft flange can fixed crankshaft timing gear and oil pump gear, what is more important can also replace with the frictional force driving torque of interference fit junction plane between crankshaft flange and bent axle traditional parallel key transmission, when motor output high pulling torque, can not skid, also can not cause bent axle to roll key major accident.

Accompanying drawing explanation

Fig. 1 is assembling explosive view of the present utility model

Fig. 2 is assembly figure of the present utility model

In figure: 1, bent axle, 2, flat key, 3, crankshaft timing gear, 4, oil pump gear, 5, crankshaft flange, 6, belt pulley, 7, bolt.

Embodiment

As illustrated in fig. 1 and 2, a kind of high strength crankshaft front end structure, comprise bent axle 1, crankshaft timing gear 3, oil pump gear 4, crankshaft flange 5 and belt pulley 6, described crankshaft timing tooth 3 is taken turns with oil pump gear 4 and is connected to bent axle 2 front ends in turn by flat key 2, described crankshaft flange 5 is assemblied in bent axle 1 foremost by hot cover process, described crankshaft flange 5 is large interference fit with bent axle 1 front end, and described belt pulley 6 is connected with crankshaft flange 5 by bolt 7.

Connecting means of the present utility model:

1, with parallel key, crankshaft timing gear and oil pump gear are connected to crankshaft front end.

2, crankshaft flange is utilized hot cover process to be assemblied in bent axle foremost, both coordinate for large interference fit again, play restriction axially collecting together function and passing through the frictional force outputting power of both junction planes said gear.

3, finally with the high-strength bolt of 8 M10, belt pulley is evenly tightened on flange.

Claims

1. a high strength crankshaft front end structure, it is characterized in that: comprise bent axle, crankshaft timing gear, oil pump gear, crankshaft flange and belt pulley, described crankshaft timing gear and oil pump gear are connected to crankshaft front end in turn by flat key, described crankshaft flange is assemblied in bent axle foremost by hot cover process, described crankshaft flange and crankshaft front end are large interference fit, and described belt pulley is connected with crankshaft flange by bolt.