Structure for removing internal risers of planet carrier products

Abstract

The utility model discloses a structure for removing an internal dead head of a planet carrier product, which comprises a planet carrier casting, the dead head is arranged on the lower side of the central inner cavity surface of the planet carrier casting, the lower part of the dead head is connected with the planet carrier casting through a dead head neck, and the center of the upper end surface of the dead head is connected with a dead head extension section extending towards the direction far away from the planet carrier casting. The device is used for hammering contact during riser cleaning. After the structure is used, the dead head can be smoothly removed by knocking for 1-3 times, so that the production efficiency of casting knockout is improved. And meanwhile, the riser extension section is far away from the product part, so that the casting can be effectively prevented from being accidentally damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning castings of planetary frame products, in particular to a structure for removing internal risers of planetary frame products. Background Art

[0002] The planet carrier bears the load of gear transmission, and has high requirements on its material and internal quality. The material is mostly ductile iron. In order to eliminate internal shrinkage and shrinkage holes and achieve internal density requirements, please refer to Figure 3~Figure 5 Generally, it is necessary to set a blind riser on the lower side of the central inner cavity surface of the planet carrier casting. After the casting is boxed, the riser has a small operating space in the inner cavity of the casting to remove it. It is difficult to hit the effective part when hitting the riser with a hammer. Removing the riser is time-consuming and laborious, and it is easy to accidentally damage the casting product part, causing the casting to be damaged and scrapped. Utility Model Content

[0003] In order to solve the technical problem that the riser in the inner cavity of planetary carrier products is difficult to remove safely, the utility model provides a structure for removing the internal riser of planetary carrier products, which can quickly, labor-savingly and simply remove the riser in the inner cavity, thereby improving production efficiency.

[0004] The utility model is realized by adopting the following technical scheme; a structure for removing internal risers of planetary carrier products, comprising a planetary carrier casting, a riser is arranged on the lower side of the central inner cavity surface of the planetary carrier casting, the lower part of the riser is connected to the planetary carrier casting through a riser neck, and the center of the upper end surface of the riser is connected to a riser extension section extending in a direction away from the planetary carrier casting, which is used for hammering contact when cleaning the riser.

[0005] Further, the riser is formed by a straight-tube thermal insulation riser sleeve.

[0006] Furthermore, the riser extension section is located in the outer mold upper die, and is formed by a riser extension section mold with a draft angle installed at the center of the riser seat of the outer mold upper die.

[0007] Furthermore, the riser extension section mold is cylindrical.

[0008] The utility model has the following beneficial effects:

[0009] 1. Before adopting this structure, due to the small inner cavity space of the casting, only a small part of the riser protrudes from the body, and it is difficult to accurately hammer the effective force position of the riser. It takes about 30 times to remove a riser. After using this structure, the riser can be removed smoothly by knocking 1-3 times, which improves the production efficiency of casting boxing.

[0010] 2. Before adopting this structure, only a small part of the riser protrudes from the main body, and knocking on the riser can easily accidentally damage the casting product, causing damage to the casting. After using this structure, the riser extension section is far away from the product part, which can effectively avoid accidental damage to the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the straight-tube heat-insulating riser sleeve of the utility model;

[0013] Figure 3 It is a structural schematic diagram of the prior art;

[0014] Figure 4 It is a cutaway schematic diagram of the prior art;

[0015] Figure 5 It is a structural schematic diagram of a common thermal insulation riser sleeve in the prior art.

[0016] In the figure: 1. planet carrier casting; 2. riser; 3. straight-tube thermal insulation riser sleeve; 4. riser extension; 5. riser neck; 6. ordinary thermal insulation riser sleeve. DETAILED DESCRIPTION

[0017] In order to better understand the purpose, structure and function of the utility model, the structure of a planetary carrier product of the utility model with the internal riser removed is further described in detail below in conjunction with the accompanying drawings.

[0018] like Figure 1 and Figure 2 As shown, a structure for removing internal risers of planetary carrier products includes a planetary carrier casting 1, a riser 2 is arranged on the lower side of the central inner cavity surface of the planetary carrier casting 1, the lower part of the riser 2 is connected to the planetary carrier casting 1 through a riser neck 5, and the center of the upper end surface of the riser 2 is connected to a riser extension section 4 extending away from the planetary carrier casting 1, which is used for hammering contact when cleaning the riser 2.

[0019] like Figure 3~Figure 5 As shown, in the prior art, a common heat-insulating riser is used in the inner cavity of the planet carrier casting 1. In this embodiment, a straight heat-insulating riser is used in the inner cavity of the planet carrier casting 1, and a riser extension section 4 is added to the upper mold shape.

[0020] Specifically, the common heat-insulating riser sleeve 6 with a cover on the top surface of the inner cavity of the planet carrier casting 1 is replaced with a straight-tube heat-insulating riser sleeve 3 with the same outer dimensions and without a cover on the top surface. A cylindrical riser extension section mold with a draft angle is installed at the center of the riser seat of the outer mold upper mold. When the box is closed, the cylindrical cavity in the outer mold upper mold is in contact with and connected to the upper mouth of the straight-tube heat-insulating riser sleeve 3, and the riser extension section 4 is formed when the casting is poured.

[0021] When cleaning the riser 2 of the planetary carrier casting 1, a hammer is used to hit the top of the riser extension section 4. The distance between the hammering position and the riser neck 5 increases. Due to the lever principle, the riser 2 can be easily removed. At the same time, the riser extension section 4 is far away from the product part, and hitting the riser 2 will not accidentally damage the casting.

[0022] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A structure for removing the internal riser of a planetary carrier product, characterized in that: The invention comprises a planet carrier casting (1), wherein a riser (2) is arranged on the lower side of the central inner cavity surface of the planet carrier casting (1), the lower part of the riser (2) is connected to the planet carrier casting (1) via a riser neck (5), and the center of the upper end surface of the riser (2) is connected to a riser extension section (4) extending in a direction away from the planet carrier casting (1) for hammering contact when cleaning the riser.

2. The structure for removing the internal riser of a planetary carrier product according to claim 1, characterized in that: The riser (2) is formed by a straight-tube heat-insulating riser sleeve (3).

3. The structure for removing the internal riser of a planetary carrier product according to claim 2, characterized in that: The riser extension section (4) is located in the outer mold upper mold and is formed by a riser extension section mold with a draft angle installed in the center of the riser seat of the outer mold upper mold.

4. The structure for removing the internal riser of a planetary carrier product according to claim 3, characterized in that: The riser extension section mold is cylindrical.

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