An umbrella-shaped molten iron pouring channel casting structure for large wind power bearing seat castings

Abstract

The invention discloses an umbrella-shaped molten iron pouring channel pouring structure for a large-scale wind power bearing seat casting, comprising an upper sand mold, a lower sand mold, a feed channel, a diversion channel, an upper auxiliary groove, a lower auxiliary groove, and a discharge channel. A mold cavity is provided in the lower sand mold, and the mold cavity opens upward. The upper sand mold is composed of a first mold body and a second mold body. The first mold body is placed on the lower sand mold, and the first mold body covers the mold cavity. The bottom of the first mold body is fixed with a second mold body, and the second mold body and the first mold body are an integrated structure. The second mold body is cylindrical, and the second mold body is pressed on the bottom wall of the mold cavity. The combination of the upper sand mold and the lower sand mold forms a pouring cavity. The invention arranges the discharge channel at the bottom of the pouring cavity, so that the molten iron can smoothly fill the pouring cavity from bottom to top, and the pouring cavity is not easily damaged. At the same time, the molten iron is not easily oxidized, which is convenient for exhaust. The casting is not easy to produce defects such as slag inclusion, sand inclusion, shrinkage, etc., which effectively guarantees the quality of the casting.

Description

[Technical field]

[0001] The invention relates to the technical field of casting, in particular to the technical field of large-scale wind power bearing seats. [Background technology]

[0002] Large wind power bearing seats are generally produced by casting, which has extremely high requirements for casting quality and does not allow defects such as slag inclusion, sand inclusion, shrinkage, etc. The castings cast by the existing casting structure are prone to defects such as slag inclusion, sand inclusion, shrinkage, etc., and cannot meet the needs well. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose an umbrella-shaped molten iron pouring channel casting structure for a large wind power bearing seat casting, which can prevent molten iron from easily destroying the casting cavity and causing defects such as slag inclusion, sand inclusion, shrinkage and the like.

[0004] To achieve the above-mentioned purpose, the present invention proposes an umbrella-shaped molten iron pouring channel casting structure for a large-scale wind power bearing seat casting, comprising an upper sand mold, a lower sand mold, a feed channel, a diversion channel, an upper auxiliary trough, a lower auxiliary trough, and a discharge channel. A mold cavity is provided in the lower sand mold, and the mold cavity opens upward. The upper sand mold is composed of a first mold body and a second mold body. The first mold body is placed on the lower sand mold, and the first mold body covers the mold cavity. The second mold body is fixed to the bottom of the first mold body. The second mold body and the first mold body are an integrated structure. The second mold body is cylindrical and pressed on the bottom wall of the mold cavity. The combination of the upper sand mold and the lower sand mold forms a casting cavity. A plurality of upper auxiliary grooves are provided at the bottom of the second mold body, and the upper auxiliary grooves are arranged in a circle around the axis of the second mold body. A feed channel is provided on the upper sand mold, and the feed port of the feed channel is located at the top of the upper sand mold, and the discharge port of the feed channel is located at the bottom end of the second mold body. The discharge port of the feed channel is connected with each upper auxiliary groove through a diversion channel, and a plurality of lower auxiliary grooves corresponding to the upper auxiliary grooves are provided on the bottom wall of the mold cavity, and the upper auxiliary grooves cover the corresponding lower auxiliary grooves. A discharge channel is provided at the bottom of the lower auxiliary groove, and the discharge channel is U-shaped. The discharge end of the discharge channel is located on the bottom wall of the mold cavity and is connected with the casting cavity.

[0005] Preferably, the feed channel is a vertically arranged cylindrical channel, a buffer groove is provided on the bottom wall of the mold cavity, the buffer groove is in the shape of an inverted spherical crown, the top diameter of the buffer groove is the same as the inner diameter of the feed channel, and the buffer groove is coaxial with the feed channel.

[0006] Preferably, a positioning groove is provided on the bottom wall of the mold cavity, and the bottom end of the second mold body is embedded in the positioning groove.

[0007] Preferably, the discharge channel is a ceramic tube.

[0008] Preferably, a plurality of chillers are provided on the side walls, top wall and bottom wall of the casting cavity.

[0009] Preferably, the first mold body is provided with a plurality of vent holes communicated with the casting cavity.

[0010] Preferably, the diversion channel consists of a first channel, a second channel, and a third channel. The discharge end of the feed channel is connected to a plurality of radially distributed first channels. The second channel is an annular groove coaxial with the feed channel. The first channel is connected to the second channel. The outer side of the second channel is provided with a plurality of third channels corresponding to the upper auxiliary grooves one by one. The third channel is connected to the corresponding upper auxiliary grooves.

[0011] Preferably, a ceramic filter is provided in the first channel.

[0012] The beneficial effects of the present invention are as follows: the present invention arranges the discharge channel at the bottom of the casting cavity so that the molten iron can smoothly fill the casting cavity from bottom to top, and the casting cavity is not easily damaged. At the same time, the molten iron is not easily oxidized, which facilitates exhaust. The casting is not prone to defects such as slag inclusion, sand inclusion, shrinkage, etc., thereby effectively ensuring the quality of the casting.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0014] Figure 1 It is a front view of an umbrella-shaped molten iron pouring channel pouring structure of a large wind power bearing seat casting of the present invention;

[0015] Figure 2 It is a bottom view of the second mold body of the umbrella-shaped molten iron runner casting structure of a large wind power bearing seat casting of the present invention.

[0016] In the figure: 1-upper sand mold, 2-lower sand mold, 3-diversion channel, 10-feeding channel, 11-first mold body, 12-second mold body, 15-upper auxiliary groove, 20-buffer groove, 21-casting cavity, 22-positioning groove, 23-cold iron, 25-lower auxiliary groove, 26-discharging channel, 31-first channel, 32-second channel, 33-third channel. [Specific implementation method]

[0017] See also Figure 1 and Figure 2The present invention discloses an umbrella-shaped molten iron pouring channel casting structure for a large-scale wind power bearing seat casting, comprising an upper sand mold 1, a lower sand mold 2, a feed channel 10, a diversion channel 3, an upper auxiliary groove 15, a lower auxiliary groove 25, and a discharge channel 26. The lower sand mold 2 is provided with a mold cavity, and the mold cavity opens upward. The upper sand mold 1 is composed of a first mold body 11 and a second mold body 12. The first mold body 11 is placed on the lower sand mold 2, and the first mold body 11 covers the mold cavity. The second mold body 12 is fixed to the bottom of the first mold body 11. The second mold body 12 and the first mold body 11 are an integrated structure. The second mold body 12 is cylindrical and pressed on the bottom wall of the mold cavity. The combination of the upper sand mold 1 and the lower sand mold 2 forms a casting cavity 21, and a plurality of upper auxiliary grooves 15 are provided at the bottom of the second mold body 12, and the upper auxiliary grooves 15 are surrounded by the axis of the second mold body 12. A feed channel 10 is provided on the upper sand mold 1, and the feed port of the feed channel 10 is located at the top of the upper sand mold 1, and the discharge port of the feed channel 10 is located at the bottom of the second mold body 12. The discharge port of the feed channel 10 is connected with each upper auxiliary groove 15 through a diversion channel 3, and a plurality of lower auxiliary grooves 25 corresponding to the upper auxiliary grooves 15 are provided on the bottom wall of the mold cavity. The upper auxiliary grooves 15 cover the corresponding lower auxiliary grooves 25, and the lower auxiliary grooves 25 are provided on the bottom wall of the mold cavity. A discharge channel 26 is provided at the bottom of the auxiliary groove 25, and the discharge channel 26 is U-shaped. The discharge end of the discharge channel 26 is located on the bottom wall of the mold cavity and is connected to the casting cavity 21. The feed channel 10 is a vertically arranged cylindrical channel. A buffer groove 20 is provided on the bottom wall of the mold cavity. The buffer groove 20 is in the shape of an inverted spherical crown. The top diameter of the buffer groove 20 is the same as the inner diameter of the feed channel 10. The buffer groove 20 is coaxial with the feed channel 10. A positioning groove 22 is provided on the bottom wall of the mold cavity. The bottom end of the second mold body 12 is embedded in the positioning groove 22. The discharge channel 26 is a ceramic tube. The side walls, top walls, A plurality of cold irons 23 are provided on the bottom wall, a plurality of vents connected to the casting cavity 21 are provided on the first mold body 11, the diversion channel 3 is composed of a first channel 31, a second channel 32, and a third channel 33, the discharge end of the feed channel 10 is connected with a plurality of radially distributed first channels 31, the second channel 32 is an annular groove coaxial with the feed channel 10, the first channel 31 is connected to the second channel 32, a plurality of third channels 33 corresponding to the upper auxiliary grooves 15 are provided on the outer side of the second channel 32, the third channel 33 is connected to the corresponding upper auxiliary grooves 15, and a ceramic filter is provided in the first channel 31.

[0018] Working process of the present invention:

[0019] In the working process of the umbrella-shaped molten iron pouring channel pouring structure of the large wind power bearing seat casting of the present invention, the discharge channel 26 is arranged at the bottom of the pouring cavity 21, so that the molten iron can smoothly fill the pouring cavity 21 from bottom to top, and the pouring cavity 21 is not easily damaged. At the same time, the molten iron is not easily oxidized, which is convenient for exhaust. The casting is not easy to produce defects such as slag inclusion, sand inclusion, shrinkage, etc., which effectively guarantees the quality of the casting.

[0020] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. An umbrella-shaped molten iron pouring channel pouring structure for a large wind power bearing seat casting, characterized in that: The invention comprises an upper sand mold (1), a lower sand mold (2), a feed channel (10), a diversion channel (3), an upper auxiliary groove (15), a lower auxiliary groove (25), and a discharge channel (26); the lower sand mold (2) is provided with a mold cavity, the mold cavity opening is upward; the upper sand mold (1) is composed of a first mold body (11) and a second mold body (12); the first mold body (11) is placed on the lower sand mold (2), the first mold body (11) covers the mold cavity; the second mold body (12) is fixed to the bottom of the first mold body (11), and the second mold body (12) and the first mold body (11) are integrated The second mold body (12) is cylindrical and is pressed against the bottom wall of the mold cavity. The combination of the upper sand mold (1) and the lower sand mold (2) forms a casting cavity (21). The bottom of the second mold body (12) is provided with a plurality of upper auxiliary grooves (15). The upper auxiliary grooves (15) are arranged around the axis of the second mold body (12) to form a circle. The upper sand mold (1) is provided with a feed channel (10). The feed port of the feed channel (10) is located at the top of the upper sand mold (1). The discharge port of the feed channel (10) is located at the bottom of the second mold body (12). The discharge port of the material channel (10) is connected to each upper auxiliary groove (15) through a diverter channel (3); a plurality of lower auxiliary grooves (25) corresponding to the upper auxiliary grooves (15) are provided on the bottom wall of the mold cavity; the upper auxiliary grooves (15) cover the corresponding lower auxiliary grooves (25); a discharge channel (26) is provided at the bottom of the lower auxiliary grooves (25); the discharge channel (26) is U-shaped; the discharge end of the discharge channel (26) is located on the bottom wall of the mold cavity and is connected to the casting cavity (21); the discharge channel (26) is a ceramic tube; the diverter channel (3) is formed by the first The invention relates to a material distribution device comprising a first channel (31), a second channel (32) and a third channel (33); the discharge end of the feed channel (10) is connected to a plurality of radially distributed first channels (31); the second channel (32) is an annular groove coaxial with the feed channel (10); the first channel (31) is connected to the second channel (32); a plurality of third channels (33) corresponding to the upper auxiliary grooves (15) are arranged on the outer side of the second channel (32); the third channels (33) are connected to the corresponding upper auxiliary grooves (15); and a ceramic filter is arranged in the first channel (31).

2. The umbrella-shaped molten iron pouring channel pouring structure of a large wind power bearing seat casting according to claim 1, characterized in that: The feed channel (10) is a vertically arranged cylindrical channel, and a buffer groove (20) is provided on the bottom wall of the mold cavity. The buffer groove (20) is in the shape of an inverted spherical crown, and the top diameter of the buffer groove (20) is the same as the inner diameter of the feed channel (10). The buffer groove (20) is coaxial with the feed channel (10).

3. The umbrella-shaped molten iron pouring channel pouring structure of a large wind power bearing seat casting according to claim 1, characterized in that: A positioning groove (22) is provided on the bottom wall of the mold cavity, and the bottom end of the second mold body (12) is embedded in the positioning groove (22).

4. The umbrella-shaped molten iron pouring channel pouring structure of a large wind power bearing seat casting according to claim 1, characterized in that: A plurality of chillers (23) are provided on the side walls, top wall and bottom wall of the casting cavity (21).

5. The umbrella-shaped molten iron pouring channel pouring structure of a large wind power bearing seat casting according to claim 1, characterized in that: The first mold body (11) is provided with a plurality of vent holes which are in communication with the casting cavity (21).

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