Weight-reduction cast iron crankshaft and casting method

A crankshaft and cast iron technology, applied in crankshafts, casting equipment, shafts, etc., can solve the problems of reducing the bending bearing capacity of the crankshaft, increasing the weight of the engine and the car, affecting the performance reliability, etc., to achieve weight reduction, improve casting process performance, The effect of reducing oil consumption

Pending Publication Date: 2020-09-08
广西玉柴船电动力有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing crankshaft journal is solid. On the one hand, the weight increases, which increases the weight of the engine and the vehicle, and indirectly increases fuel consumption; performance reliability

Method used

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  • Weight-reduction cast iron crankshaft and casting method
  • Weight-reduction cast iron crankshaft and casting method
  • Weight-reduction cast iron crankshaft and casting method

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the specific embodiments in the accompanying drawings.

[0027] refer to Figure 1-3 , a weight-reducing cast iron crankshaft, the material is cast iron, preferably nodular iron. The weight-reducing cast iron crankshaft comprises a crankshaft body 1, a connecting rod journal 2 of the crankshaft body 1 is provided with a first weight-reducing cavity 3 running through both ends thereof, and a second weight-reducing chamber 3 is provided at the end of the main journal 4 of the crankshaft body 1. Cavities 5 , first reinforcing ribs 6 are provided in the main journals 4 between two adjacent connecting rod journals 2 , and the first reinforcing ribs 6 separate the second weight-reducing chambers 5 at both ends of the same main journal 4 .

[0028] The first lightening cavity 3 includes an arc-shaped cavity 7 in the middle and straight holes 8 at both ends. The arc-shaped cavity 7 is a structure with a ...

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Abstract

The invention discloses a weight-reduction cast iron crankshaft, relates to an engine, and mainly solves the technical problems that an existing crankshaft is heavy and the reliability is influenced.The weight-reduction cast iron crankshaft comprises a crankshaft body, wherein a first weight-reduction cavity penetrating through the two ends of a connecting rod journal is formed in the connectingrod journal of the crankshaft body; a second weight-reduction cavity is formed in the end part of a main journal of the crankshaft body; a first reinforcing rib is arranged in the main journal betweentwo adjacent connecting rod journals; and the first reinforcing rib separates the second weight-reduction cavities in the two ends of the same main journal. The invention further discloses a castingmethod of the weight-reduction cast iron crankshaft. According to the weight-reduction cast iron crankshaft and the casting method, the first weight-reduction cavity is formed in the connecting rod journal, and the second weight-reduction cavity and the first reinforcing rib are arranged in the main journal, so that the thickness of a crankshaft solid is reduced, on one hand, the casting performance of the crankshaft can be improved, and the reliability is guaranteed, and on the other hand, the weight of the crankshaft can be reduced, the performance of the engine is improved, the rotating speed is increased, the friction work is reduced, the engine oil consumption is reduced, and the emission is better.

Description

technical field [0001] The invention relates to an engine, more specifically, it relates to a weight-reducing cast iron crankshaft and a casting method. Background technique [0002] The crankshaft is the most important component in the engine. It bears the force transmitted by the connecting rod and converts it into torque through the crankshaft output and drives other accessories on the engine to work. The crankshaft is subjected to the joint action of the centrifugal force of the rotating mass, the periodically changing gas inertial force and the reciprocating inertial force, so that the crankshaft is subjected to the bending torsional load. [0003] The existing crankshaft journal is solid. On the one hand, the weight increases, which increases the weight of the engine and the vehicle, and indirectly increases fuel consumption; performance reliability. Contents of the invention [0004] The technical problem to be solved by the present invention is to address the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C3/08B22C9/22
CPCF16C3/08B22C9/22F16C2220/02
Inventor 黄第云李伟柱沈捷林铁坚黄永仲
Owner 广西玉柴船电动力有限公司
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