CN214355328U - Adopt A356 aluminium system truck wheel hub - Google Patents

Abstract

The utility model provides an adopt A356 aluminium system truck wheel hub, its includes wheel hub body, wheel rim, inner circle, through-hole, inner disc, inside groove, wheel shaft hub hole, screw rod hole gentleness valve hole, the middle part of wheel hub body is provided with the wheel rim, and the inboard of wheel rim is provided with the inner circle, has evenly seted up a plurality of through-hole on the inner circle, and the inside of inner circle is provided with the inner disc, and the inside groove has been seted up at the middle part of inner circle, and the middle part of inner disc is provided with the wheel shaft hub, and a plurality of screw rod hole has evenly been seted up to the edge of inner disc, is convenient for dispel the heat through the inside groove and the through-hole of seting up on the one hand, and on the other hand can reduce the weight of wheel hub body.

Description

Adopt A356 aluminium system truck wheel hub

Technical Field

The utility model relates to a wheel hub makes specifically is an adopt A356 aluminium system truck wheel hub.

Background

The hub is an important part of the automobile, the metal part used for supporting the tyre by the tyre inner contour, usually in the shape of a cylinder, and is mounted on the shaft at the center. Also called rim, steel ring, wheel and tyre bell. The hub is of various kinds according to diameter, width, molding mode and material. The truck as a truck has the characteristics of large mass, strong bearing capacity and the like, has large inertia, has high requirements on a brake system, and has adverse effects on the performance of a tire and the brake system due to high temperature in long-distance transportation, so that the temperature of a wheel hub must be controlled within a certain range. A water brake and a water tank are installed on a common long-distance running cart, a spray head is installed on the edge of a tire and is used for spraying water to cool the tire and a tire disc at high temperature, so that the brake pad is cooled, friction is increased, the braking distance is reduced, and the safety performance is improved. However, in cold winter areas, the use of such water injection systems can lead to ice on the road surface, which can affect the safe passage of other vehicles, and this approach is therefore prohibited in many areas.

The hub manufactured by the existing truck hub manufacturing process has poor surface quality and is easy to generate cracks, and meanwhile, a casting mold is seriously corroded by heat and fatigued by heat, so that the service life of the mold is shortened.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides an adopt A356 aluminium system card wheel hub, its weight that is convenient for dispel the heat, and reduces the wheel hub body.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model discloses a wheel hub body, wheel rim, inner circle, through-hole, inner disc, inside groove, wheel shaft hub hole, screw rod hole gentleness valve hole, the middle part of wheel hub body is provided with the wheel rim, and the inboard of wheel rim is provided with the inner circle, and a plurality of through-hole has evenly been seted up to interior the circle, and the inside of inner circle is provided with the inner disc, and the inside groove has been seted up at the middle part of inner circle, and the middle part of inner disc is provided with the wheel shaft hub, and a plurality of screw rod hole has evenly been seted up to the edge of inner disc.

Preferably, the hub body is made of A356 aluminum alloy.

Preferably, a rim is arranged at the edge of the rim.

Preferably, the rim is provided with an air valve hole.

Preferably, a hub hole is formed on the inner side of the hub.

Has the advantages that: the invention is convenient for heat dissipation through the inner groove and the through hole, and can reduce the weight of the hub body.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

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

fig. 2 is a side view of the present invention;

FIG. 3 is a three-dimensional perspective view of the present invention;

reference numbers in the figures: 1. a hub body; 2. a rim; 3. a rim; 4. an inner ring; 5. a through hole; 6. an inner disc; 7. an inner tank; 8. a hub of the wheel; 9. a wheel hub bore; 10. a threaded rod bore; 11. the air valve hole.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying fig. 1-3.

Embodiment one, given by fig. 1-3, the utility model provides an adopt A356 aluminium system truck wheel hub, including wheel hub body 1, wheel rim 2, rim 3, inner circle 4, through-hole 5, inner disc 6, inside groove 7, wheel shaft hub 8, wheel shaft hub hole 9, screw rod hole 10 and gas valve hole 11, the middle part of wheel hub body 1 is provided with wheel rim 2, the inboard of wheel rim 2 is provided with inner circle 4, a plurality of through-hole 5 has evenly been seted up on inner circle 4, the inside of inner circle 4 is provided with inner disc 6, inside groove 7 has been seted up at the middle part of inner circle 4, the middle part of inner disc 6 is provided with wheel shaft hub 8, a plurality of screw rod hole 10 has evenly been seted up in the edge of inner disc 6.

The hub body 1 is made of A35 aluminum alloy.

A rim 3 is provided at the edge of the rim 2.

The rim 3 is provided with an air valve hole 11.

The inner side of the wheel hub 8 is provided with a wheel hub hole 9.

A manufacturing process for a truck hub made of A356 aluminum is characterized by comprising the following steps: a. coating: when the aqueous graphite coating is sprayed on the surface of a mold cavity, the thickness of the coating is 0.05-0.10 mm, and the surface quality of a casting is affected by excessive thickness;

b. preheating temperature of the die: the mold is directly preheated by adopting the aluminum melt with high preheating efficiency, so that the energy is saved, and the blank of the preheated mold can be repeatedly heated for use, wherein the temperature of a male mold is generally 240-320 ℃, the temperature of a female mold is generally 200-320 ℃, and the working temperature is 300-450 ℃;

c: quantitative pouring: quantitative pouring is carried out according to the size of the hub, and the pouring quality determines the height size and the formability of the casting because all aluminum melts poured in the direct extrusion casting process form the casting;

d: pouring temperature of molten aluminum: the pouring temperature of the extrusion casting of the aluminum wheel is selected to be 690-720 ℃;

e: pressurization start time: after the molten aluminum is injected into the cavity at a certain temperature, the pressurization is carried out as early as possible, the pressurization time is earlier, the elongation and tensile strength of a finished piece are higher, and the pressurization time is higher, which is very important for a casting with large wall thickness difference such as an aluminum hub, because after the molten aluminum is injected into the cavity, a hard shell is formed on the surface of a female die, when a punch moves downwards, a cold partition layer is formed at the position of the hard shell after the molten liquid is filled in the cavity, the cold partition layer is difficult to remove in the casting process, the quality of the casting is seriously influenced by the existence of the cold partition layer, and the time from the injection of the molten aluminum into the cavity to the start of pressurization is not longer than 20 s;

f: pressing speed: the method is characterized in that the running speed of a punch after the punch contacts the liquid level of a melt is sensitive to the influence on the quality of a casting, the pressurizing speed is higher, when the pressurizing speed is high, a male die can quickly apply pressure to the melt, so that the forming, crystallization and plastic deformation are facilitated, and the pressurizing speed is higher and better under the conditions that the melt does not splash and no vortex occurs in metal;

g: pressurizing pressure: the main function of pressurization is to eliminate shrinkage porosity and air holes of the material and improve the mechanical property of the material, the pressure has direct influence on the mechanical property of the casting, casting defects, tissues, segregation, melting points, phase balance and the like, so that the determination of the pressure necessary for forming is very important, and the selection of the pressure depends on the type and the property of the alloy and the size, the shape and the height of the casting;

h: pressure maintaining time: according to the thickness of the casting, under the condition of ensuring forming and crystallization solidification, the pressure maintaining time is preferably short, but the pressure maintaining time is too short, the pressure is relieved when the hot spot of the casting is not completely solidified, so that the hot spot cannot be fed, and the defects of shrinkage cavity, cracks and the like are easily generated in the casting; if the pressure maintaining time is too long, the temperature of the casting is low, the shrinkage stress is large, the demoulding is difficult, the surface quality of the casting is poor, the production rate is reduced, the service life of the mould is shortened, and the strength and the plasticity index of the part are increased along with the continuation of the pressure maintaining time when the pressurizing pressure is small; when the pressurizing pressure is high, the strength index is reduced, the plasticity index is increased, and the pressure maintaining time for producing the thick-wall wheel can be 290 s;

i: demolding and extruding: after the pressure of the cast blank is relieved, the blank is generally immediately demoulded, but the blank is just formed at the moment, the demoulding temperature is higher, the hardness is lower, and the forced demoulding easily causes the deformation of the blank, so the demoulding is carried out after the blank is properly cooled by water.

Experimental example:

subject: will the embodiment of the utility model provides a wheel hub that makes is as experiment group one, and experiment group two selects the ordinary wheel hub of quality on the market as contrast group one, and the wheel hub of the better wheel hub of quality is as contrast group two.

Purpose of the experiment: and testing the flame retardant property of each group of hubs.

The experimental method comprises the following steps: according to the national STI-03A detection standard, the hub manufactured by the experimental group, the hub of the comparison group I and the hub of the comparison group II have the same area, then the tensile strength, the yield strength and the elongation rate of the hubs are tested, and the experimental result is recorded.

Table of experimental results: table of experimental results:

can adopt by last table the utility model discloses the wheel hub who makes has better tensile strength, yield strength and elongation performance.

Has the advantages that: the utility model discloses a scribble coating and protect the mould, improve foundry goods surface quality and be convenient for take out the foundry goods from the mould, extrusion casting mould hot corrosion and thermal fatigue are serious, and the coating of spraying in the mould die cavity can reduce the thermal shock of high temperature aluminium melt to the mould die cavity, reduces the thermal conductivity of mould, makes the heat of aluminium lose less when filling the mould; the coating has certain yielding effect, can effectively prevent shrinkage cracks, the casting temperature is selected from 690-720 ℃, the temperature of the mold influences the quality of a forge piece and the service life of a casting mold, the temperature of the mold is too low, the poured aluminum melt is fast to solidify, the crust is thick and the pressurizing effect is poor, the aluminum melt cannot be formed, the crystal is thick, the cold insulation of the casting is increased, the probability of generating defects such as columnar crystal is increased, the coating is difficult to spray, but the too high mold temperature can cause the sticking of the casting, easily generate hot cracks and influence the quality of the casting, simultaneously accelerate the mechanical abrasion of the surface of the mold and the inclination of the hot cracks of the mold, and reduce the service life of the mold, the internal groove 7 and the through hole 5 are convenient for heat dissipation on one hand, and the weight of the hub body 1 can be reduced on the other hand.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides an adopt A356 aluminium system truck wheel hub, includes wheel hub body (1), rim (2), rim (3), inner circle (4), through-hole (5), inner disc (6), inside groove (7), wheel hub (8), wheel hub hole (9), screw rod hole (10) gentleness valve hole (11), its characterized in that: the wheel hub is characterized in that a wheel rim (2) is arranged in the middle of the wheel hub body (1), an inner ring (4) is arranged on the inner side of the wheel rim (2), a plurality of through holes (5) are uniformly formed in the inner ring (4), an inner disc (6) is arranged inside the inner ring (4), an inner groove (7) is formed in the middle of the inner ring (4), a wheel hub (8) is arranged in the middle of the inner disc (6), and a plurality of threaded rod holes (10) are uniformly formed in the edge of the inner disc (6).

2. The hub according to claim 1, wherein the hub body (1) is made of a35 aluminum alloy.

3. A truck hub made of a356 aluminum according to claim 1, wherein the rim (3) is provided at the edge of the rim (2).

4. The truck hub made of A356 aluminum according to claim 3, wherein the rim (3) is provided with air valve holes (11).

5. The truck hub made of A356 aluminum according to claim 1, wherein the hub (8) has hub holes (9) formed on the inner side thereof.

Images