Two-stage balance mechanism of engine
A technology of balancing mechanism and engine, applied in the direction of balance weight, mechanical equipment, transmission device, etc., can solve the problems of high engine oil pan, the height of the oil pan cannot be too high, and the occupied space is large, and the effect of reducing the height is achieved.
Active Publication Date: 2016-11-09
WEICHAI POWER CO LTD
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Problems solved by technology
The disadvantage of this design is that the secondary balance mechanism is installed under the body and wrapped in the oil pan. The height of the secondary balance mechanism affects the height of the oil pan, which will result in a higher engine oil pan and a larger space occupation.
[0003] When the engine is assembled on the vehicle, the height of the oil pan cannot be too high due to the limitation of the vehicle's girder and steering rod, and the height of the oil pan is limited by the secondary balance mechanism. The Chinese patent with the notification number CN202280790U proposes A balance mechanism for an internal combustion engine, which improves the existing inline four-cylinder engine's second-order reciprocating inertial force balance method, and is driven by a gear transmission system with an idler gear, and the transmission gear is driven by the crankshaft drive gear, idler gear, and drive shaft drive gear , driving shaft driving gear and driven shaft driving gear, the crankshaft driving gear is fixed on the crankshaft, the idler gear is externally meshed with the crankshaft driving gear, and the driving shaft driving gear is externally meshing with the idler gear, but this scheme only proposes Adding the idler, the addition of the idler further increases the height of the secondary balance mechanism, and does not solve the problem of reducing the size of the driving shaft gear and the driven shaft gear of the secondary balance mechanism, thereby reducing the height of the secondary balance mechanism technical issues
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[0020] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0021] According to an embodiment of the present invention, a secondary balance mechanism for an engine is proposed, including a ring gear, a driving shaft gear, a driven shaft gear, and several idler gears, and the ring gear is fixed on the crankshaft and is connected with the idler gears in the crankshaft. One of the driving shaft gears is in external meshing with one of the idler gears that is not meshed with the ring gear, and b...
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The invention provides a two-stage balance mechanism of an engine. The two-stage balance mechanism comprises a gear ring, a driving shaft gear, a driven shaft gear and a plurality of idle wheels. The gear ring is fixed to a crankshaft and externally engaged with one of the idle wheels, the driving shaft gear is externally engaged with one of the idle wheels not engaged with the gear ring, the driving shaft gear and the driven shaft gear are externally engaged, and a duplicate gear is additionally arranged between the gear ring and a driving gear shaft of the two-stage balance mechanism. Therefore, the height of the two-stage balance mechanism is reduced.
Description
technical field [0001] The present application relates to a balance mechanism, in particular to a secondary balance mechanism of an engine. Background technique [0002] The secondary balance mechanism is a device used to balance the second-order reciprocating inertial force of the engine. The secondary balance mechanism is generally composed of two unbalanced shafts, which use the unbalanced shaft to generate centrifugal force to balance the second-order reciprocating inertial force. The rotation speed of the shaft is twice that of the crankshaft of the engine. Due to assembly requirements, the ring gear of the secondary balance mechanism needs to be assembled from one end of the crankshaft, at least through a balance weight of the crankshaft, and installed to the designated position of the crankshaft. This determines that the ring gear of the secondary balance mechanism cannot be made too small. Since the rotational speed of the driving shaft and the driven shaft of the s...
Claims
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IPC IPC(8): F16H1/22F16F15/26F16F15/28
CPCF16F15/26F16F15/283F16H1/22
Inventor 于健王志秀孔凡强李超李栋
Owner WEICHAI POWER CO LTD