CN218744714U - Gearbox casing rising head structure - Google Patents
Gearbox casing rising head structure Download PDFInfo
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- CN218744714U CN218744714U CN202223053677.0U CN202223053677U CN218744714U CN 218744714 U CN218744714 U CN 218744714U CN 202223053677 U CN202223053677 U CN 202223053677U CN 218744714 U CN218744714 U CN 218744714U
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- riser
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Abstract
The utility model belongs to the technical field of the gearbox casing casting technique and specifically relates to a gearbox casing rising head structure. The casting mold is internally provided with a liquid inlet channel communicated with a casting forming cavity, the liquid inlet channel is internally provided with a riser sleeve, a riser forming cavity is arranged in the center of the riser sleeve, and a riser is formed in the riser forming cavity; a pressing block is arranged in the liquid inlet channel, the lower end face of the pressing block is pressed and contacted with the upper end face of the positioning sleeve, and the riser sleeve is pressed in the liquid inlet channel by the pressing block; the central position of the pressing block is provided with a mandril hole which is communicated up and down, a mandril which can slide up and down is arranged in the mandril hole, and the mandril can eject a dead head in the dead head sleeve. The utility model adopts a small riser structure formed in the riser sleeve, greatly reducing the size of the riser structure and improving the yield of castings; the small feeder head structure is more convenient to saw and repair, the repair workload and cost are reduced, and the production efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of the gearbox casing casting technique and specifically relates to a gearbox casing rising head structure.
Background
The casting of the gearbox shell has a complex structure, the flange lug is thick and has a hot joint, and the lug is easy to shrink. In the prior art, when a casting of a gearbox shell is formed in a casting mode, a dead head needs to be arranged at a hot junction of the casting of the gearbox shell for feeding. The traditional large riser structure has larger size, so that the casting yield is low; meanwhile, the large riser structure is difficult to saw, so that the production efficiency is reduced, and the renovation cost is higher.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the application provides the gearbox shell riser structure, and a small riser structure is formed in a riser sleeve, so that the size of the riser structure is greatly reduced, and the yield of castings is improved; meanwhile, the small riser structure is more convenient to saw and repair, the repair workload and cost are reduced, and the production efficiency is improved.
The utility model discloses the technical scheme who adopts as follows:
a riser structure of a gearbox shell comprises a casting mold, wherein a liquid inlet channel communicated with a casting forming cavity is arranged in the casting mold, a riser sleeve is arranged in the liquid inlet channel, a riser forming cavity is arranged at the center position in the riser sleeve, and a riser is formed in the riser forming cavity; a pressing block is arranged in the liquid inlet channel, the lower end face of the pressing block is pressed and contacted with the upper end face of the positioning sleeve, and the riser sleeve is pressed in the liquid inlet channel by the pressing block; the central position of the pressing block is provided with a mandril hole which is communicated up and down, a mandril which can slide up and down is arranged in the mandril hole, and the mandril can eject a dead head in the dead head sleeve.
Furthermore, a positioning sleeve is arranged on the upper end face of the riser sleeve, the diameter of the positioning sleeve is larger than that of the riser sleeve, a first positioning end face is horizontally arranged in the middle of the liquid inlet channel, and the lower end face of the positioning sleeve is in up-and-down contact with the first positioning end face to achieve positioning connection.
Furthermore, a second positioning end face is horizontally arranged at the lower part in the liquid inlet channel, and the lower end face of the riser sleeve is in vertical contact with the second positioning end face to realize positioning connection.
Furthermore, a convex positioning block is arranged at the center of the lower end face of the pressing block, the positioning block extends into an inner hole of the positioning sleeve, and the side face of the positioning block is in contact with the side wall of the inner hole of the positioning sleeve to realize positioning and installation.
Furthermore, a riser forming cavity of the riser sleeve is of a cone frustum structure, and the cross section area of the riser forming cavity is increased from top to bottom.
The utility model has the advantages as follows:
the utility model adopts a small riser structure formed in the riser sleeve, greatly reducing the size of the riser structure and improving the yield of castings; the small riser structure is more convenient to saw and repair, the repairing workload and cost are reduced, and the production efficiency is improved; the aluminum titanate riser sleeve does not need to be brushed with riser paint, the riser has good heat insulation and obvious feeding effect; the riser forming cavity of the riser sleeve is of a cone frustum structure, the cross section area of the riser forming cavity is increased from top to bottom, the clamping force between the riser and the upper die is small, the riser is more easily separated from the riser forming cavity, and a casting is not easy to deform in the separation process.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
Wherein: 1. a riser; 2. a riser sleeve; 3. briquetting; 4. a top rod; 5. casting a mold; 6. a transmission housing casting; 7. a first locating end face; 8. a second locating end face; 9. a positioning sleeve; 10. and (5) positioning the blocks.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and fig. 2, a gearbox casing riser forming structure includes a casting mold 5, a liquid inlet channel communicated with a casting forming cavity is arranged in the casting mold 5, a riser sleeve 2 is arranged in the liquid inlet channel, the riser sleeve 2 is made of an aluminum titanate material, a riser forming cavity is arranged at the central position in the riser sleeve 2, a riser 1 is formed in the riser forming cavity, and the riser 1 is located right above a heat junction part of a gearbox casing casting 6.
When the casting riser forming device is used, casting liquid enters the hot junction part of the casting forming cavity through the riser forming cavity to be fed, the casing casting 6 of the gearbox is formed after the casting liquid is cooled, and the casting liquid remained in the riser forming cavity forms the riser 1. Because the riser sleeve 2 is arranged in the liquid inlet channel, the riser 1 is formed in the riser forming cavity of the riser sleeve 2, the size of the riser structure is greatly reduced, and the yield of castings is improved. After the size of the riser 1 connected to the casting of the gearbox shell becomes smaller, the sawing and the trimming are more convenient, the trimming workload and cost are reduced, and the production efficiency is improved.
In order to realize the positioning and installation of the riser bush 2 in the liquid inlet channel, as shown in fig. 2, a positioning sleeve 9 is arranged on the upper end surface of the riser bush 2, and the diameter of the positioning sleeve 9 is larger than that of the riser bush 2. The middle part in the liquid inlet channel is horizontally provided with a first positioning end surface 7, the lower part in the liquid inlet channel is horizontally provided with a second positioning end surface 8, the lower end surface of a positioning sleeve 9 is in up-and-down contact with the first positioning end surface 7 to realize positioning connection, and the lower end surface of a riser sleeve 2 is in up-and-down contact with the second positioning end surface 8 to realize positioning connection.
In order to further ensure the stability of the installation of the riser bush 2, as shown in fig. 2, a pressing block 3 is arranged in the liquid inlet channel, the lower end face of the pressing block 3 is pressed and contacted with the upper end face of the positioning sleeve 9, and the pressing block 3 presses the riser bush 2 in the liquid inlet channel.
As shown in fig. 2, a protruding positioning block 10 is arranged at the center of the lower end face of the pressing block 3, the positioning block 10 and the pressing block 3 are integrally formed, the positioning block 10 extends into an inner hole of the positioning sleeve 9, and the side face of the positioning block 10 is in contact with the side wall of the inner hole of the positioning sleeve 9 to realize positioning and installation.
In order to facilitate the demolding of the riser 1, as shown in fig. 2, a vertically through ejector rod hole is formed in the center of the pressing block 3, an ejector rod 4 capable of sliding vertically is arranged in the ejector rod hole, and after the riser 1 is molded, the ejector rod 4 can eject the riser 1 in the riser sleeve 2.
In order to further facilitate the demolding of the riser 1, as shown in fig. 2, the riser forming cavity of the riser sleeve 2 is of a truncated cone structure, and the cross section area of the riser forming cavity is increased from top to bottom, so that when the ejector rod 4 ejects the riser 1 in the riser sleeve 2, the riser 1 is more easily separated from the riser forming cavity.
The utility model discloses a little rising head structure of dead head cover in shaping has reduced rising head structure size greatly, has improved the foundry goods yield. The small feeder head structure is more convenient to saw and repair, the repair workload and cost are reduced, and the production efficiency is improved. The aluminum titanate riser sleeve does not need to be brushed with riser paint, the riser has good heat insulation and obvious feeding effect. The riser forming cavity of the riser sleeve 2 is of a cone frustum structure, the cross section area of the riser forming cavity is increased from top to bottom, the clamping force between the riser and the upper die is small, the riser 1 is more easily separated from the riser forming cavity, and a casting is not easy to deform in the separation process.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (5)
1. The utility model provides a gearbox casing rising head structure, includes casting mould (5), set up the inlet channel of intercommunication foundry goods shaping cavity in casting mould (5), its characterized in that: a riser sleeve (2) is arranged in the liquid inlet channel, a riser forming cavity is arranged at the center position in the riser sleeve (2), and a riser (1) is formed in the riser forming cavity; a pressing block (3) is arranged in the liquid inlet channel, the lower end face of the pressing block (3) is pressed and contacted with the upper end face of the positioning sleeve (9), and the riser sleeve (2) is pressed in the liquid inlet channel by the pressing block (3); the central position of the pressing block (3) is provided with a mandril hole which is through up and down, a mandril (4) which can slide up and down is arranged in the mandril hole, and the mandril (4) can eject a riser (1) in the riser sleeve (2).
2. The transmission housing riser structure of claim 1, wherein: the upper end face of the riser sleeve (2) is provided with a positioning sleeve (9), the diameter of the positioning sleeve (9) is larger than that of the riser sleeve (2), the middle part of the liquid inlet channel is horizontally provided with a first positioning end face (7), and the lower end face of the positioning sleeve (9) is in contact with the first positioning end face (7) up and down to realize positioning connection.
3. The transmission case riser structure of claim 2, wherein: and a second positioning end face (8) is horizontally arranged at the lower part in the liquid inlet channel, and the lower end face of the riser sleeve (2) is vertically contacted with the second positioning end face (8) to realize positioning connection.
4. The transmission housing riser structure of claim 3, wherein: the center position of the lower end face of the pressing block (3) is provided with a convex positioning block (10), the positioning block (10) extends into an inner hole of the positioning sleeve (9), and the side face of the positioning block (10) is in contact with the side wall of the inner hole of the positioning sleeve (9) to realize positioning and installation.
5. The transmission case riser structure of claim 4, wherein: the riser forming cavity of the riser sleeve (2) is of a cone frustum structure, and the cross section area of the riser forming cavity is increased from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223053677.0U CN218744714U (en) | 2022-11-17 | 2022-11-17 | Gearbox casing rising head structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223053677.0U CN218744714U (en) | 2022-11-17 | 2022-11-17 | Gearbox casing rising head structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218744714U true CN218744714U (en) | 2023-03-28 |
Family
ID=85649748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223053677.0U Active CN218744714U (en) | 2022-11-17 | 2022-11-17 | Gearbox casing rising head structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218744714U (en) |
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2022
- 2022-11-17 CN CN202223053677.0U patent/CN218744714U/en active Active
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