CN213685188U - Improved generation engine crankshaft pulley assembly - Google Patents

Abstract

The utility model discloses improved generation engine crankshaft pulley assembly, including wheel hub, shock attenuation inner circle, rubber circle and shock attenuation outer lane, the wheel hub surface is radially being equipped with the step face, and the step face divide into the big tip of diameter and the little tip of diameter with the wheel hub surface, the outer tip surface of shock attenuation inner circle cover at wheel hub, and the medial extremity of shock attenuation inner circle offsets with the step face, rubber circle cover is at the outer tip surface's of wheel hub shock attenuation inner snare surface, and the medial extremity of rubber circle also offsets with the step face, the surface of shock attenuation outer lane is equipped with one section six groove belt pulleys and one section four groove belt pulleys, and the shock attenuation outer lane cover is at the outer rubber circle surface of wheel hub tip and wheel hub's tip surface. The utility model discloses six grooves of belt and four grooves of belt can be installed simultaneously, the engine train demand of new development can be satisfied, and production cost can be effectively reduced.

Description

Improved generation engine crankshaft pulley assembly

Technical Field

The utility model relates to the technical field of engines, in particular to engine crankshaft pulley assembly.

Background

The crankshaft pulley assembly has the main functions of transmitting power from an engine and reducing vibration of a crankshaft so as to reduce damage of parts of the engine, when the engine runs, the magnitude and the direction of acting force transmitted to a crank pin through a connecting rod are changed periodically, the instantaneous angular speed of a flywheel arranged at the rear end of the engine can be basically considered as uniform, the stress of the crankshaft is periodic, the crankshaft can be twisted and rotated, when the frequency of exciting force is integral multiple of the self-vibration frequency of the crankshaft, the crankshaft can resonate, the abrasion of the parts of the engine can be aggravated, the service life of the parts of the engine can be shortened, and the crankshaft can be broken seriously.

The existing crankshaft pulley assembly is composed of the following components: 1. the existing crankshaft pulley assembly is provided with a 6-groove (6-groove pulley) and 4+ 4-groove (two groups of four-groove pulleys) structure, wherein the 4+ 4-groove pulley structure is shown in figures 1 and 2 and comprises a hub, a damping outer ring, a rubber ring and a damping inner ring; 2. the damping inner ring and the damping outer ring of the crankshaft pulley are made of HT250, and the rubber ring is made of butadiene-acrylonitrile rubber; 3. the inner and outer shock absorbing rings and the rubber ring are assembled into a whole by a press fitting process. The general disadvantages of the existing shaft pulleys: 1. the newly developed engine gear train needs to be provided with 6-groove belt pulleys and 4-groove belt pulleys at the same time, and the existing belt pulleys cannot meet the transmission requirements required by the currently developed engine gear train; 2. the existing belt pulley damping inner ring is made of a plurality of materials, so that the cost is increased.

Disclosure of Invention

The utility model aims at the defect that above-mentioned prior art exists, provide an improved generation engine crankshaft pulley assembly, can install six grooves and four groove belts simultaneously, can satisfy the engine train demand of new development, and can effectively reduction in production cost.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the utility model provides an improved generation engine crankshaft pulley assembly, includes wheel hub, shock attenuation inner circle, rubber circle and shock attenuation outer lane, and the wheel hub surface is equipped with the step face in radial, and the step face divide into the big tip of diameter and the tip that the diameter is little with the wheel hub surface, the outer tip surface of shock attenuation inner circle cover wheel hub, and the medial extremity of shock attenuation inner circle offsets with the step face, rubber circle cover is at the outer tip surface of wheel hub's shock attenuation inner ring cover surface, and the medial extremity of rubber circle also offsets with the step face, the surface of shock attenuation outer lane is equipped with one section six groove belt pulleys and one section four groove belt pulleys, and the outer cover of shock attenuation outer lane is at the outer rubber circle surface of wheel hub tip and wheel hub's tip.

The utility model discloses a further technical scheme is: the inner side surface of the damping outer ring is provided with a protruding portion which is mutually positioned with the step surface, the inner side end face of the protruding portion is mutually matched and positioned with the step surface, and the inner side surface of the protruding portion is matched with the outer surface of the rubber ring.

The utility model discloses improved generation engine crankshaft pulley assembly has following beneficial effect: by changing the outer surface structure of the hub and arranging the step surface, the overall length of the damping inner ring and the rubber ring is shortened, the weight is reduced, and the part cost is reduced; the damping outer ring is provided with belt pulleys with two groove numbers, so that the damping outer ring is suitable for engine wheel trains with more requirements.

The improved engine crankshaft pulley assembly of the present invention will be further described with reference to the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic diagram of a prior art engine crank pulley assembly;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural view of an improved engine pulley assembly of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

the reference numbers illustrate: 1-hub, 2-damping inner ring, 3-rubber ring, 4-damping outer ring, 5-step surface, 6-small end, 7-protruding part, 8-big end, 9-four-groove belt pulley and 10-six-groove belt pulley.

Detailed Description

As shown in fig. 3 and 4, the utility model discloses improved generation engine crankshaft pulley assembly, including wheel hub 1, shock attenuation inner circle 2, rubber circle 3 and shock attenuation outer lane 4. Wherein, the outer surface of the hub 1 is provided with a step surface 5 in the radial direction, and the step surface 5 divides the outer surface of the hub 1 into a big end 8 with a big diameter and a small end 6 with a small diameter. The damping inner ring 2 is sleeved on the surface of the small end 6 outside the hub 1, and the end part of the inner side of the damping inner ring 2 is abutted against the step surface 5. The rubber ring 3 is sleeved on the outer surface of the damping inner ring 2 on the surface of the small end 6 outside the hub 1, and the end part of the inner side of the rubber ring 3 is also abutted against the step surface 5. The surface of the shock absorption outer ring 4 is provided with a section of six-groove belt pulley 10 and a section of four-groove belt pulley 9, and the six-groove belt pulley 10 and the four-groove belt pulley 9 are connected into a whole. The damping outer ring 4 is sleeved on the surface of the rubber ring 3 outside the small end 6 of the hub 1 and the outer surface of the large end 8 of the hub 1. The inner side surface of the damping outer ring 4 is provided with a protruding part 7 which is mutually positioned with the step surface 5, the inner side end surface of the protruding part 7 is mutually matched and positioned with the step surface 5, the inner side surface of the protruding part 7 is matched with the outer surface of the rubber ring 3, and one end of the damping outer ring 4, which is not provided with the protruding part 7, is sleeved on the outer surface of the large end 8 of the hub 1. The damping inner ring 2 and the damping outer ring 4 are made of HT250, and the rubber ring 3 is made of ethylene propylene rubber. The damping inner ring 2, the damping outer ring 4 and the rubber ring 3 are integrated by adopting a vulcanization process, so that the elastic property of rubber is fully utilized, and the durability is good.

The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims (2)

1. The utility model provides an improved generation engine crankshaft pulley assembly, includes wheel hub (1), shock attenuation inner circle (2), rubber circle (3) and shock attenuation outer lane (4), its characterized in that, wheel hub (1) surface is radially being equipped with step face (5), and step face (5) divide into big tip (8) of diameter and little tip (6) of diameter with wheel hub (1) surface, shock attenuation inner circle (2) cover is at the outer tip (6) surface of wheel hub (1), and the medial extremity of shock attenuation inner circle (2) offsets with step face (5), rubber circle (3) cover is at the shock attenuation inner circle (2) cover surface on wheel hub (1) outer tip (6) surface, and the medial extremity of rubber circle (3) also offsets with step face (5), the surface of shock attenuation outer lane (4) is equipped with one section six groove belt pulleys (10) and one section four groove belt pulley (9), and shock attenuation outer lane (4) cover rubber circle (3) surface and wheel hub outside wheel hub (1) tip (6) of wheel hub (1) 1) The large end (8) of the tube.

2. The improved engine pulley assembly as claimed in claim 1, wherein the inner side surface of said shock absorbing outer ring (4) is provided with a protrusion (7) positioned with respect to the step surface (5), the inner side end surface of the protrusion (7) is positioned with respect to the step surface (5), and the inner side surface of the protrusion (7) is positioned with respect to the outer surface of the rubber ring (3).

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