CN202646334U

CN202646334U - Oil leakage preventing structure of crank shaft

Info

Publication number: CN202646334U
Application number: CN 201220238196
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

The utility model provides an oil leakage preventing structure of a crank shaft, aiming to solve the problem that a conventional oil leakage preventing structure of the crank shaft is easy in oil leakage in the prior art. According to the utility model, thread lines moving in the direction of a crank throw during counterclockwise rotation are arranged at a shaft excircle at the oil seal position of the bar part of the crank shaft. By means of the oil leakage preventing structure of the crank shaft, provided by the utility model, when an engine operates, oil is incapable of being thrown out of a box and the surface texture is controlled, so that the purpose of controlling the oil leakage is achieved.

Description

A kind of bent axle leak-proof arrangement

Technical field

The utility model relates to leak-proof arrangement, specially refers to a kind of bent axle leak-proof arrangement.

Background technique

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, drive the external equipment that connects with it, drive in addition the control mechanisms such as distribution device, ignition mechanism, speed regulating mechanism.

In the prior art, a side of bent axle is flywheel end bar section, and main link is engine flywheel; The intermediate portion is crank throw, is also referred to as rod journal, mainly links to each other with connecting rod, and opposite side is output terminal bar section, mainly is connected output engine power with outside.In order to prevent engine oil leakage, in flywheel end bar section and the output terminal bar section of bent axle oil sealing is set all, in order better to play the effect of oil-leakage-prevention, adding man-hour, also the axle cylindrical at the oil sealing place of crank rod section is being polished, to improve the degree of finish on axle surface, reduce friction, improve sealing.But in the specific implementation, prior art still exists the problem of easy generation leakage of oil.

Summary of the invention

For overcoming the problem of the easy oil leakage that prior art bent axle leak-proof arrangement exists, the utility model proposes a kind of bent axle leak-proof arrangement.The utility model bent axle leak-proof arrangement, the threaded line that moves to the crank throw direction when axle cylindrical at the oil sealing place of crank rod section is arranged on and is rotated counterclockwise.

When the useful technique effect of the utility model bent axle leak-proof arrangement was engine running, oil can not throw away the casing outside, thereby the control surface texture reaches the purpose of control leakage of oil.

Description of drawings

Accompanying drawing 1 is the schematic diagram of the utility model bent axle leak-proof arrangement.

Below in conjunction with the drawings and specific embodiments the utility model bent axle leak-proof arrangement is described further.

Embodiment

Accompanying drawing 1 is the schematic diagram of the utility model bent axle leak-proof arrangement, and among the figure, 1 is the axle cylindrical, and a is that counterclockwise b is the sand paper movement direction.As seen from the figure, a kind of bent axle leak-proof arrangement of the utility model, the threaded line that moves to the crank throw direction when axle cylindrical 1 at the oil sealing place of crank rod section is arranged on and is rotated counterclockwise.

When the oil sealing threaded line of processing the present embodiment, with Crankshaft cylindrical 1 in the counterclockwise direction a rotation when polishing, simultaneously, have sand paper that axle cylindrical 1 is polished, and the sand paper of the right and left corresponding by the bent axle left and right end portions to the crank throw center of bent axle along b to moving.Like this, will be formed on the threaded line that moves to the crank throw direction when being rotated counterclockwise at the axle cylindrical 1 of crank rod section.Obviously, when the axle cylindrical 1 of crank rod section has when being rotated counterclockwise the threaded line that moves to the crank throw direction, the groove that threaded line is namely arranged at Crankshaft cylindrical 1, when engine running, oil will move along with the groove direction of threaded line, and the groove direction of threaded line moves to the crank throw direction, therefore, oil will move to the crank throw direction with threaded line, like this, during engine running, oil can not throw away the casing outside, thereby the utility model bent axle leak-proof arrangement control surface texture reaches the purpose of control leakage of oil.

Claims

1. a bent axle leak-proof arrangement is characterized in that, the threaded line that moves to the crank throw direction when axle cylindrical (1) at the oil sealing place of crank rod section is arranged on and is rotated counterclockwise.