Quick removal structure for casting riser of aluminum alloy flywheel shell

Abstract

The utility model relates to a quick removal structure for a casting riser of an aluminum alloy flywheel shell, which comprises a flywheel shell and an inner cavity arranged on the flywheel shell, a plurality of through holes used for forming the riser are arranged in the inner cavity, and a filter screen is arranged on the inner bottom surface of each through hole. The riser removing device is simple in structure, reasonable in design, time-saving and labor-saving and convenient to use, the filter screen is arranged at the joint of the riser and the flywheel shell, so that a break point convenient for knocking off the riser is formed at the joint, and the riser removing efficiency of a casting body is effectively improved.

Description

Technical Field

[0001] The utility model relates to a structure for quickly removing casting risers of an aluminum alloy flywheel housing. Background Art

[0002] After the initial casting of a large aluminum alloy flywheel housing, there are risers that need to be removed. Normal riser cutting uses horizontal sawing machines and vertical sawing machines. However, since the risers are in the inner cavity of the flywheel housing, neither of these two sawing machines can be used. If manual cutting tools are used, due to the small space in the inner cavity of the flywheel housing where the risers are located, the operation is inconvenient, the cutting time is long, and the cost is high. At the same time, because the risers and the castings are integrally cast together, it is not easy to knock off the risers with a hammer. If too much force is applied, it is easy to cause the workpiece to lack material, making it impossible to be used for mass production operations. Content of the Utility Model

[0003] The utility model improves the above problems. That is, the technical problem to be solved by the utility model is a structure for quickly removing casting risers of an aluminum alloy flywheel housing, which is convenient and efficient to use.

[0004] The utility model is constituted as follows. It includes a flywheel housing and an inner cavity provided on the flywheel housing. A plurality of through holes for forming risers are provided in the inner cavity, and a filter screen is provided on the bottom surface of each through hole.

[0005] Further, the cross-section of the through hole is funnel-shaped.

[0006] Further, the upper end of the through hole communicates with the inner cavity, and the lower end of the through hole is flush with the bottom surface of the flywheel housing.

[0007] Further, the flywheel housing includes a flywheel body. First convex bodies, second convex bodies, third convex bodies and extension bodies are provided on the circumferential side of the flywheel body, and the inner cavity is provided on the flywheel body.

[0008] Further, a ring-shaped protrusion and a plurality of circular protrusions are provided on the bottom surface of the flywheel body. The ring-shaped protrusion is located in the middle of the bottom surface of the flywheel body, one of the circular protrusions is located in the middle of the ring-shaped protrusion, and the remaining circular protrusions are located outside the ring-shaped protrusion.

[0009] Further, a first indentation groove, a second indentation groove and a plurality of third indentation grooves are provided on the circumferential side of the flywheel body.

[0010] Compared with the prior art, the utility model has the following beneficial effects: The device is reasonably designed, simple in structure, time-saving and labor-saving, and convenient to use, effectively improving the operation efficiency of removing the riser of the casting body. By placing a filter screen between the riser and the casting body, after pouring, due to the blockage of the filter screen, the riser does not pour together with the casting body over the entire surface, but only pours together through the filter holes on the filter screen. In this way, the connection between the formed riser and the casting body is no longer a sealed whole, but becomes several small points at the connection between the riser and the casting body. When the riser is removed subsequently, as long as the riser is gently tapped with a hammer, the riser can easily fall off. Description of the Drawings

[0011] Figure 1 Structural Schematic of the Embodiment of the Utility Model Figure 1 ;

[0012] Figure 2 Structural Schematic of the Embodiment of the Utility Model Figure 2 ;

[0013] Figure 3 Cross-sectional View of the Embodiment of the Utility Model;

[0014] Figure 4 Structural Schematic of the Embodiment of the Utility Model Figure 3 ;

[0015] Figure 5 Structural Schematic of the Embodiment of the Utility Model Figure 4 ;

[0016] Figure 6 Structural Schematic of the Embodiment of the Utility Model Figure 5 。 Detailed Description of the Specific Embodiment

[0017] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0018] Embodiment: As Figures 1-6 shown, in this embodiment, a rapid riser removal structure for casting an aluminum alloy flywheel housing is provided, including a flywheel housing 1 and an inner cavity 101 provided on the flywheel housing. A plurality of through holes 102 for forming risers 3 are provided in the inner cavity. The risers are accommodated in the through holes and the upper ends of the risers extend upward from the upper ends of the risers. A filter screen 2 is provided on the bottom surface of each through hole; a plurality of filter holes are provided on the filter screen.

[0019] During operation, a filter screen is placed between the riser and the casting body. After pouring, due to the obstruction of the filter screen, the entire surface of the riser is not poured together with the casting body. Instead, it is only poured together through the filter holes on the filter screen. In this way, the connection between the riser and the casting body is no longer a sealed whole, but several small points are formed at the connection between the riser and the casting body. When the riser is removed later, with a gentle knock of a hammer, the riser can easily fall off.

[0020] In the embodiment of the present utility model, the cross-section of the through-port is funnel-shaped.

[0021] In the embodiment of the present utility model, the upper end of the through-port is communicated with the inner cavity, and the lower end of the through-port is flush with the bottom surface of the flywheel housing.

[0022] In the embodiment of the present utility model, the flywheel housing 1 includes a flywheel body 103. A first convex body 104, a second convex body 105, a third convex body 106, and an extension body 107 are arranged on the circumferential side of the flywheel body, and the inner cavity is arranged on the flywheel body.

[0023] In the embodiment of the present utility model, an annular protrusion 108 and a plurality of circular protrusions 109 are arranged on the bottom surface of the flywheel body. The annular protrusion is located in the middle of the bottom surface of the flywheel body, one of the circular protrusions is located in the middle of the annular protrusion, and the remaining circular protrusions are located outside the annular protrusion.

[0024] In the embodiment of the present utility model, a first indentation groove 110, a second indentation groove 120, and a plurality of third indentation grooves 130 are arranged on the circumferential side of the flywheel body.

[0025] For any of the technical solutions disclosed by the present utility model above, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with obvious technical effects or representativeness among many feasible numerical values. Since there are too many numerical values to enumerate, the present utility model only discloses some numerical values to illustrate the technical solutions of the present utility model. Moreover, the above-listed numerical values should not constitute a limitation on the protection scope of the present invention.

[0026] Meanwhile, for the present utility model above, if it discloses or involves components or structural members that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (such as using screws or bolts), or it can also be understood as: a non-detachable fixed connection (such as riveting, welding). Of course, the mutual fixed connection can also be replaced by an integral structure (such as manufactured by integral forming using casting technology) (except when it is obviously impossible to adopt the integral forming process).

[0027] If terms such as "first" and "second" are used in this text to define components, those skilled in the art should be aware that the use of "first" and "second" is merely for the convenience of distinguishing components in description. Without additional statements, these terms have no special meanings.

[0028] In addition, in any of the technical solutions disclosed in the present utility model, the terms used to represent positional relationships or shapes, unless otherwise stated, include states or shapes that are approximate, similar, or close to them.

[0029] Any component provided by the present utility model can either be assembled from multiple separate components or be a single component manufactured by an integral forming process.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them; although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present utility model or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present utility model, they should all be covered within the scope of the technical solutions claimed by the present utility model.

Claims

1. A structure for quickly removing the riser of an aluminum alloy flywheel housing casting, characterized in that: The flywheel housing comprises a flywheel housing and an inner cavity arranged on the flywheel housing. The inner cavity is provided with a plurality of through openings for forming risers, and a filter screen is arranged on the inner bottom surface of each through opening.

2. The aluminum alloy flywheel housing casting riser rapid removal structure according to claim 1, characterized in that: The cross section of the through opening is funnel-shaped.

3. The aluminum alloy flywheel housing casting riser rapid removal structure according to claim 1, characterized in that: The upper end of the through opening is communicated with the inner cavity, and the lower end of the through opening is flush with the bottom surface of the flywheel housing.

4. The aluminum alloy flywheel housing casting riser rapid removal structure according to claim 1, characterized in that: The flywheel housing comprises a flywheel body, a first convex body, a second convex body, a third convex body and an extension body are arranged on the circumference of the flywheel body, and the inner cavity is arranged on the flywheel body.

5. The aluminum alloy flywheel housing casting riser rapid removal structure according to claim 4, characterized in that: The bottom surface of the flywheel body is provided with an annular protrusion and a plurality of circular protrusions, wherein the annular protrusion is located in the middle of the bottom surface of the flywheel body, one of the circular protrusions is located in the middle of the annular protrusion, and the other annular protrusions are located outside the annular protrusion.

6. The aluminum alloy flywheel housing casting riser rapid removal structure according to claim 4, characterized in that: The flywheel body is provided with a first dozen grooves, a second dozen grooves and a plurality of third dozen grooves on its circumferential side.

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