CN214698989U

CN214698989U - Flywheel assembly with end signal teeth

Info

Publication number: CN214698989U
Application number: CN202022776009.5U
Authority: CN
Inventors: 陈汉
Original assignee: YULIN DAZHI MACHINERY FITTINGS CO Ltd
Current assignee: YULIN DAZHI MACHINERY FITTINGS CO Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-11-12
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a take terminal surface signal tooth flywheel assembly and preparation method thereof relates to the engine assembly field. The structure of the flywheel comprises a flywheel, wherein a gear ring is arranged on the periphery of the flywheel, and signal teeth are arranged on the end face of the flywheel. The preparation method comprises the following steps: smelting, sand shooting, casting, sand shakeout cleaning and post-treatment. The flywheel assembly with the end face signal teeth, provided by the utility model, has the advantages that the signal teeth are arranged on the end face, so that the spatial arrangement of the engine is flexible, and the flywheel assembly is suitable for engines with special structures; meanwhile, the composite material is light in weight and good in mechanical property.

Description

Flywheel assembly with end signal teeth

Technical Field

The utility model relates to an engine component field specifically is a take terminal surface signal tooth flywheel assembly.

Background

The flywheel is a wheel-shaped energy accumulator which is arranged on a rotating shaft of the machine and has larger moment of inertia. When the rotating speed of the machine is increased, the kinetic energy of the flywheel is increased, and the energy is stored; when the rotating speed of the machine is reduced, the kinetic energy of the flywheel is reduced, and the energy is released. Flywheels may be used to reduce speed fluctuations during operation of the machine.

At present, signal teeth of a flywheel are generally arranged on an outer circle so as to facilitate a sensor arranged on a flywheel shell to acquire data; however, for a special engine type, since another member needs to be provided on the end surface of the flywheel, it is not suitable to provide the signal teeth on the outer circle.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem that above-mentioned prior art exists, provide a take terminal surface signal tooth flywheel assembly and preparation method thereof, this flywheel assembly makes engine spatial arrangement nimble.

For realizing the purpose of the utility model, realize through following technical scheme:

a flywheel assembly with end face signal teeth comprises a flywheel, wherein a gear ring is installed on the periphery of the flywheel, and signal teeth are arranged on the end face of the flywheel.

The flywheel is also provided with a signal area, the signal area and the signal teeth are positioned on the same end face of the flywheel, and the distance between the signal area and the bearing hole is equal to the distance between the signal teeth and the bearing hole.

The depth of the signal teeth is 4.5-5.5 degrees.

The number of the signal teeth is two or more, and the signal teeth are arranged along the circumference which takes the center point of the bearing hole as the circle center.

The flywheel further comprises lightening holes, wherein the lightening holes are through holes penetrating through the end face of the flywheel and are located between the crankshaft bolt connecting holes and the signal teeth.

The distance between the bearing hole and the crankshaft bolt connecting hole and the signal tooth is larger than the distance between the lightening hole and the signal tooth.

The flywheel assembly with the end face signal teeth, provided by the utility model, has the advantages that the signal teeth are arranged on the end face, so that the spatial arrangement of the engine is flexible, and the flywheel assembly is suitable for engines with special structures; meanwhile, the composite material is light in weight and good in mechanical property. The preparation method adopts one-time clamping and multiple processing, effectively reduces the processing procedures of the flywheel and reduces the error accumulation of the processing.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the present invention from another angle;

fig. 3 is a front view of the present invention;

fig. 4 is a side sectional view of the present invention.

In the figure: a flywheel 1; a bearing hole 11; a crankshaft bolt connection hole 12; a signal tooth 13; a signal area 14; a lightening hole 16; a ring gear 3.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, this is for convenience of description and simplicity of description, and does not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the terms describing the positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the present patent.

In the present invention, unless otherwise specified or limited, it should be noted that terms such as "mounted," "connected," and the like are used in a broad sense, and for example, the terms may be mechanically connected, electrically connected, or pneumatically connected, or may be connected inside two elements, directly connected, or indirectly connected through an intermediate medium, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

As shown in fig. 1-4, the present invention is a disk type component, which is divided into two independent parts, namely a flywheel 1 and a gear ring 3. The utility model discloses the periphery of well flywheel 1 body circles and is provided with the ring gear mounting groove, and the ring gear mounting groove on the flywheel 1 is the right angle groove. The gear ring 3 is arranged at the gear ring installation groove of the flywheel 1 in an interference fit mode.

The flywheel 1 is provided with bearing holes 11 from inside to outside in sequence; the crankshaft bolt connecting hole 12, the lightening hole 16, the signal tooth 13 and the gear ring mounting groove. Wherein the bearing hole 11; the crankshaft bolt connecting hole 12 and the lightening hole 16 are through holes and penetrate through the end face of the flywheel 1. A bearing hole 11; the crankshaft bolt connecting hole 12, the lightening hole 16, the signal tooth 13 and the ring gear 3 have the same axis.

The signal teeth 13 are arranged on one of the end faces of the flywheel 1, and the signal teeth 13 are arranged along the circumference with the center point of the bearing hole 11 as the center, namely, a circle of tooth-shaped structures protruding out of the end faces and arranged in an annular array. When the signal teeth 13 are fully paved on the end face of the flywheel 1, 60 signal teeth 13 are totally arranged, and the angle of each two adjacent signal teeth 13 is 6 degrees; however, for the convenience of calculating the number of turns by a rotating speed sensor in the engine to control the fuel injection ignition of the engine, 58 signal teeth 13 are arranged on the end face of the flywheel 1, and the flat area lacking the signal teeth 13 is a signal area 14. Generally, the depth of the signal teeth 13 is 5 mm.

As shown in fig. 1 and 2, a bearing hole 11 and a crankshaft bolt connecting hole 12 are arranged on the flywheel 1 and are recessed relative to the end surface provided with signal teeth 13; namely, the bearing hole 11 and the crankshaft bolt connecting hole 12 and the lightening hole 16 have certain displacement in the axial direction.

The bearing hole 11 is used for mounting an input shaft of the gearbox; the crankshaft bolt attachment hole 12 is used to mount a crankshaft. The lightening holes 16 are used for reducing the self weight without reducing the mechanical strength of the utility model.

The composition requirements of the iron used in the present invention are shown in table 1.

TABLE 1 composition requirements (mass percent)

C(％)	Si(％)	Mn(％)	P(％)	S(％)	Cr(％)
						0.42～0.5	0.17～0.37	0.5～0.8	≤0.035	≤0.035	≤0.25

The utility model discloses a manufacturing process includes following step:

(1) designing and manufacturing an iron mold sand-lined mold; manufacturing an iron mold sand-lined mold according to a drawing according to a product appearance design drawing;

(2) smelting: smelting the iron raw materials meeting the component requirements of the table 1, raising the temperature of the iron raw materials to 1480-1500 ℃, keeping for a period of time, waiting for the slag to float upwards, scattering a TDW-SZ deslagging agent for deslagging, and tapping at 1460-1480 ℃;

(3) sand shooting: shooting sand into an iron mold sand-lined mold, wherein the sand shooting air pressure is 0.5-0.6Mpa, and the template temperature and the iron mold temperature are 160-;

the sand used was precoated sand, as required in table 2 below:

TABLE 2 quality requirements

(4) Casting: casting the smelted iron raw material into an iron mold sand-lined mold at 1380-1400 ℃; molten iron can enter water from the position 1/3-1/2 behind the center of the pouring cup, the runner is rotated to pour the molten iron, and the pouring principle of slow → fast → slow is adopted to ensure that the liquid level of the pouring cup is kept above 1/2 in the pouring process;

(5) shakeout cleaning: demolding after casting and molding, and removing shakeout on the surface of a casting piece;

(6) and (3) post-treatment: turning the surface of a casting piece, drilling and tapping, milling signal teeth, sleeving a gear ring 3, reaming, dynamically balancing and cleaning according to a drawing; cleaning to obtain the finished product.

The hot-sleeved gear ring 3 is characterized in that the gear ring 3 is heated to more than or equal to 200 ℃ and then is quickly installed in the gear ring installation groove 15 of the flywheel 1 by utilizing the principle of expansion with heat and contraction with cold.

Wherein, the dynamic balance means that the unbalance amount is controlled to be less than or equal to 20g/cm by a patent de-weighting mode.

The utility model discloses the finished product of making, the utility model discloses a hardness is greater than or equal to 198HB, and tensile strength is greater than or equal to 225 Mpa.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a take terminal surface signal tooth flywheel assembly, includes flywheel (1), and ring gear (3), its characterized in that are installed to its periphery: the end surface of the flywheel (1) is provided with signal teeth (13); the outer circumference of the flywheel (1) body is provided with a gear ring mounting groove, the gear ring mounting groove on the flywheel (1) is a right-angle groove, and the gear ring (3) is mounted at the gear ring mounting groove of the flywheel (1) in an interference fit manner.

2. The flywheel assembly with end signal teeth of claim 1, wherein: the flywheel (1) is further provided with a signal area (14), the signal area (14) and the signal teeth (13) are located on the same end face of the flywheel (1), and the distance between the signal area (14) and the bearing hole (11) is equal to the distance between the signal teeth (13) and the bearing hole (11).

3. The flywheel assembly with end signal teeth of claim 1, wherein: the depth of the signal teeth (13) is 4.5-5.5 degrees.

4. The flywheel assembly with end signal teeth of claim 3, wherein: the number of the signal teeth (13) is two or more, and the signal teeth are arranged along the circumference which takes the central point of the bearing hole (11) as the center of a circle.

5. The flywheel assembly with end signal teeth of claim 3, wherein: the flywheel (1) further comprises a lightening hole (16), wherein the lightening hole (16) is a through hole penetrating through the end face of the flywheel (1) and is positioned between the crankshaft bolt connecting hole (12) and the signal tooth (13).

6. The flywheel assembly with end signal teeth of claim 2, wherein: the distance between the bearing hole (11) and the crankshaft bolt connecting hole (12) and the signal tooth (13) is larger than the distance between the lightening hole (16) and the signal tooth (13).