CN107716889B - Adjustable core frame assembly - Google Patents
Adjustable core frame assembly Download PDFInfo
- Publication number
- CN107716889B CN107716889B CN201711131399.7A CN201711131399A CN107716889B CN 107716889 B CN107716889 B CN 107716889B CN 201711131399 A CN201711131399 A CN 201711131399A CN 107716889 B CN107716889 B CN 107716889B
- Authority
- CN
- China
- Prior art keywords
- fixing seat
- bearing
- shaft
- upper fixing
- adjusting threaded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 210000004907 gland Anatomy 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 11
- 241001272720 Medialuna californiensis Species 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention discloses an adjustable core frame assembly, which comprises a split shaft, a bearing assembly and an upper fixing seat and a lower fixing seat which can be respectively fixed on a half-moon-shaped fixing seat of a centrifuge body; the bearing assembly is positioned between the upper fixing seat and the lower fixing seat, two ends of the bearing assembly respectively extend into the fixing seat, and the split shaft sequentially penetrates through the upper fixing seat, the bearing assembly and the lower fixing seat from top to bottom; the split shaft comprises an upper adjusting threaded shaft and a lower hollow shaft, the external threads at the top end of the adjusting threaded shaft are in matched threaded connection with the internal threaded holes at the top end of the upper fixing seat, the top end of the hollow shaft is sleeved outside the bottom end of the adjusting threaded shaft, and the bottom end of the hollow shaft is fixedly connected to the lower fixing seat; the adjusting threaded shaft, the upper fixing seat, the hollow shaft and the lower fixing seat are coaxially arranged on the central axis, a swing arm is formed on the outer wall of the bearing assembly in an extending mode, and the swing arm can rotate by taking the central axis as a shaft. Simple structure, convenient to use greatly reduces equipment fault rate, has improved production efficiency, has reduced equipment maintenance cost.
Description
Technical Field
The invention relates to an adjustable core frame assembly.
Background
At present, the mechanism of the small-sized centrifugal machine for feeding the core of the centrifugal casting machine has no adjusting function, and when the position of the core frame changes due to abrasion or external force, the core frame arm cannot be adjusted, so that the centrifugal machine cannot work. The maintenance is very troublesome, the whole core frame is required to be readjusted after being cut, then the whole core frame is welded, the adjustment process is time-consuming and labor-consuming, the adjustment quality is poor, the damage to equipment is large, and meanwhile, the production efficiency and the quality of a cast tube are influenced. This part belongs to the heavily polluted area, and the waste flows of molten iron, dust, water, sand core and the like are very big, so how to solve the sealing problem is also a difficult point.
Accordingly, there is an urgent need to provide a new type of adjustable core frame assembly.
Disclosure of Invention
The invention aims to provide an adjustable core frame assembly which is simple in structure, convenient to use, capable of greatly reducing equipment failure rate, improving production efficiency and reducing maintenance cost of equipment.
In order to achieve the above purpose, the invention provides an adjustable core frame assembly, which comprises a split shaft, a bearing assembly, an upper fixing seat and a lower fixing seat which can be respectively fixed on a half-moon-shaped fixing seat of a centrifuge body;
the bearing assembly is positioned between the upper fixing seat and the lower fixing seat, two ends of the bearing assembly respectively extend into the fixing seat, and the split shaft sequentially penetrates through the upper fixing seat, the bearing assembly and the lower fixing seat from top to bottom;
the split shaft comprises an adjusting threaded shaft positioned above and a hollow shaft positioned below, wherein an external thread at the top end of the adjusting threaded shaft is in matched threaded connection with an internal thread hole at the top end of the upper fixing seat, the top end of the hollow shaft is sleeved outside the bottom end of the adjusting threaded shaft, and the bottom end of the hollow shaft is fixedly connected to the lower fixing seat; wherein,,
the central axis of the adjusting screw shaft, the upper fixing seat, the hollow shaft and the lower fixing seat are coaxially arranged, a swing arm is formed on the outer wall of the bearing assembly in an extending mode, and the swing arm can rotate by taking the central axis as a shaft.
Preferably, the part of the top end of the adjusting threaded shaft extending out of the upper fixing seat is sleeved with a backup nut, and the backup nut is matched with the external thread of the adjusting threaded shaft and is abutted against the top end face of the upper fixing seat.
Preferably, the top end of the backup nut is provided with an oil cup.
Preferably, the bearing assembly comprises a bearing seat, a first bearing and a bearing gland, wherein the bearing seat is positioned between the upper fixing seat and the lower fixing seat, the first bearing is arranged at the lower edge of the joint of the top end of the bearing seat and the adjusting threaded shaft, the first bearing is coaxially sleeved outside the adjusting threaded shaft, and the outer wall of the first bearing is attached to the inner wall of the bearing seat; the first bearing is pressed by the bearing gland, a wall ring is formed on the cover surface of the bearing gland, and the wall ring extends into the upper fixing seat to form a sealing annular gap.
Preferably, the bearing assembly further comprises a second bearing, the second bearing is arranged at the joint of the bottom end of the bearing seat and the hollow shaft and sealed by a sealing piece, the second bearing is coaxially sleeved outside the hollow shaft, and the outer wall of the second bearing is abutted against the inner wall of the bearing seat; the second bearing is pressed by the bearing gland, a wall ring is formed on the cover surface of the bearing gland, and the wall ring extends into the lower fixing seat to form a sealing annular gap.
Preferably, the bearing gland is fitted with an oil seal to form a secondary seal.
Preferably, the half-moon-shaped fixing seat and the upper fixing seat are fixed through fixing bolts and gaskets.
According to the technical scheme, the invention designs the thread adjusting mechanism aiming at the problem that the core frame is not adjustable, and the creative central shaft adopts a split shaft structure. Outside the split central shaft, sealing nested structures are designed at the rotating parts. On the premise of taking account of adjustability, dust protection and self-cleaning can be realized. In addition, the assembly mounting seat is creatively designed into a half-moon shape, once equipment is damaged due to the external environment, the whole replacement of the device can be completed within a few minutes, the production efficiency is greatly improved, the maintenance time is shortened, and meanwhile, the device is simple in structure and low in cost.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
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 the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
FIG. 1 is a schematic diagram of the operation of the core loading mechanism;
fig. 2 is a schematic structural diagram of an adjustable core frame assembly according to an embodiment of the present invention.
Description of the reference numerals
1-half-moon shaped fixing seat 2-adjusting screw thread shaft
3-upper fixing seat 4-lower fixing seat
5-hollow shaft 6-bearing gland
7-bearing seat 10-first bearing
11-second bearing 12-seal
13-spare tightening nut 14-fixing bolt
15-gasket 16-oil cup
A-swing arm B-adjusting assembly
C-fixed seat D-oil cylinder
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the present invention, unless otherwise indicated, terms such as "upper, lower, inner, outer" and the like are used merely to denote orientations of the term in a normal use state or are commonly understood by those skilled in the art, and should not be construed as limitations of the term.
Referring to fig. 1 and 2, the invention provides an adjustable core frame assembly, which comprises a split shaft, a bearing assembly, and an upper fixing seat 3 and a lower fixing seat 4 which can be respectively fixed on a half-moon shaped fixing seat 1 of a centrifuge body;
the bearing assembly is positioned between the upper fixing seat 3 and the lower fixing seat 4, two ends of the bearing assembly respectively extend into the fixing seat partially, and the split shaft sequentially penetrates through the upper fixing seat 3, the bearing assembly and the lower fixing seat 4 from top to bottom;
the split shaft comprises an adjusting threaded shaft 2 positioned above and a hollow shaft 5 positioned below, wherein external threads at the top end of the adjusting threaded shaft 2 are in matched threaded connection with an internal threaded hole at the top end of the upper fixing seat 3, the top end of the hollow shaft 5 is sleeved outside the bottom end of the adjusting threaded shaft 2, and the bottom end of the hollow shaft 5 is fixedly connected to the lower fixing seat 4; wherein,,
the central axes of the adjusting threaded shaft 2, the upper fixing seat 3, the hollow shaft 5 and the lower fixing seat 4 are coaxially arranged, a swing arm is formed on the outer wall of the bearing assembly in an extending mode, and the swing arm can rotate by taking the central axis as a shaft.
The part of the top end of the adjusting threaded shaft 2 extending out of the upper fixing seat 3 is sleeved with a backup nut 13, and the backup nut 13 is matched with the external thread of the adjusting threaded shaft 2 and is abutted against the top end surface of the upper fixing seat 3.
An oil cup 16 is arranged at the top end of the backup nut 13.
The bearing assembly comprises a bearing seat 7, a first bearing 10 and a bearing gland 6, wherein the bearing seat 7 is positioned between the upper fixing seat 3 and the lower fixing seat 4, the first bearing 10 is arranged at the lower edge of a joint of the top end of the bearing seat and the adjusting threaded shaft 2, the first bearing 10 is coaxially sleeved outside the adjusting threaded shaft 2, and the outer wall of the first bearing is attached to the inner wall of the bearing seat 7; the first bearing 10 is pressed by the bearing gland 6, a wall ring is formed on the cover surface of the bearing gland 6, and the wall ring extends into the upper fixing seat 3 to form a sealing annular gap.
The bearing assembly further comprises a second bearing 11, the second bearing 11 is arranged at the joint of the bottom end of the bearing seat 7 and the hollow shaft 5 and is sealed by a sealing piece 12, the second bearing 11 is coaxially sleeved outside the hollow shaft 5, and the outer wall of the second bearing is abutted against the inner wall of the bearing seat 7; the second bearing 11 is pressed by the bearing gland 6, a wall ring is formed on the cover surface of the bearing gland 6 and extends into the lower fixing seat 4 to form a sealing annular gap.
An oil seal is mounted on the bearing cover 6 to form a secondary seal.
The half-moon-shaped fixing seat 1 and the upper fixing seat 3 are fixed through fixing bolts 14 and gaskets 15.
The working principle of the core feeding mechanism is as shown in fig. 1, the adjusting assembly is arranged on the fixed seat of the centrifuge body, and the swing arm and the adjusting assembly are arranged together and do circular motion under the action of the oil cylinder. And (3) placing the sand core at the end part of the swing arm, extending the oil cylinder, swinging the swing arm towards the bell mouth of the centrifugal machine, pressing the core frame at the bell mouth, pouring, retracting the oil cylinder after the pouring is finished, swinging the core frame out, and drawing the pipe. Once the core frame is deformed due to external force or thermal stress, the core frame cannot be aligned with the bell mouth, and casting failure is caused.
The adjustable core frame assembly provided by the invention is shown in fig. 2, an upper fixing seat of a half-moon-shaped fixing seat 1 is fixed on an upper plate and a lower plate of a fixing seat of a centrifugal machine body, an upper fixing seat 3 is arranged on the upper seat, an adjusting threaded shaft 2 is an upper half part of a split shaft, threads of the adjusting threaded shaft are matched with threads of the upper fixing seat 3, the end part of the adjusting threaded shaft is in a hexagonal shape, the adjusting threaded shaft can be adjusted up and down by a spanner, a bearing is arranged at the bottom end of the adjusting threaded shaft 2, a boss at the shaft end limits the bearing, a bearing seat 7 of a swing arm is arranged at the outer side of the bearing, and the swing arm can rotate around the center. The bottom of bearing frame 7 is installed another disc bearing, install split shaft's lower half spare 5 in the bearing, it is the hollow shaft, two split shafts form the cooperation in bearing frame 7 bearing cavity, hollow shaft 5's bottom mounting is in the downthehole of fixing base 4 bottom, and by bottom bolt fastening, fixing base 4 passes through the bolt and is connected with the half moon shape fixing base in bottom, form complete fixed chain, the bearing at bearing frame 7 both ends is compressed tightly by a bearing gland 6, there is thick wall ring on the capping of bearing gland 6, stretch into in fixing base 3 and the fixing base 4 down, form sealed annular gap, bearing gland 6 installs the oil blanket, form secondary seal. The piece 13 is a tightening nut for preventing loosening of the structure due to vibration.
Thus, when the core frame is deformed by external force or thermal stress, the backup nut 13 is loosened by a spanner, and the screw shaft 2 is rotated and adjusted by the spanner, so that the core frame can be adjusted up and down. After the adjustment is completed, the nut 13 is tightly prepared, and the production can be continued.
When the mechanism is damaged which cannot be repaired, the bolts of the half-moon-shaped fixing seat 1 and the lower fixing seat 4 are loosened, the connecting pins of the oil cylinders are removed, the mechanism can be integrally removed, spare parts prepared in advance are replaced, and production can be continued.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.
Claims (4)
1. The adjustable core frame assembly is characterized by comprising a split shaft, a bearing assembly, an upper fixing seat (3) and a lower fixing seat (4) which can be respectively fixed on a half-moon-shaped fixing seat (1) of a centrifugal machine body;
the bearing assembly is positioned between the upper fixing seat (3) and the lower fixing seat (4) and two ends of the bearing assembly respectively extend into the fixing seat partially, and the split shaft sequentially penetrates through the upper fixing seat (3), the bearing assembly and the lower fixing seat (4) from top to bottom;
the split shaft comprises an adjusting threaded shaft (2) positioned above and a hollow shaft (5) positioned below, wherein the top external thread of the adjusting threaded shaft (2) is in matched threaded connection with the internal thread hole at the top end of the upper fixing seat (3), the top end of the hollow shaft (5) is sleeved outside the bottom end of the adjusting threaded shaft (2), and the bottom end of the hollow shaft (5) is fixedly connected to the lower fixing seat (4); wherein,,
the central axes of the adjusting threaded shaft (2), the upper fixing seat (3), the hollow shaft (5) and the lower fixing seat (4) are coaxially arranged, a swing arm is formed on the outer wall of the bearing assembly in an extending mode, and the swing arm can rotate by taking the central axis as a shaft;
the part of the top end of the adjusting threaded shaft (2) extending out of the upper fixing seat (3) is sleeved with a backup nut (13), and the backup nut (13) is matched with the external thread of the adjusting threaded shaft (2) and is abutted against the top end surface of the upper fixing seat (3);
the bearing assembly comprises a bearing seat (7), a first bearing (10) and a bearing gland (6), wherein the bearing seat (7) is positioned between the upper fixing seat (3) and the lower fixing seat (4), the first bearing (10) is arranged at the lower edge of a joint of the top end of the bearing seat and the adjusting threaded shaft (2), the first bearing (10) is coaxially sleeved outside the adjusting threaded shaft (2), and the outer wall of the first bearing is attached to the inner wall of the bearing seat (7); the first bearing (10) is compressed by a bearing gland (6), a wall ring is formed on the cover surface of the bearing gland (6) and extends into the upper fixing seat (3) to form a sealing annular gap;
the bearing assembly further comprises a second bearing (11), the second bearing (11) is arranged at the joint of the bottom end of the bearing seat (7) and the hollow shaft (5) and is sealed by a sealing piece (12), the second bearing (11) is coaxially sleeved outside the hollow shaft (5), and the outer wall of the second bearing is abutted against the inner wall of the bearing seat (7); the second bearing (11) is pressed by the bearing gland (6), a wall ring is formed on the cover surface of the bearing gland (6) and extends into the lower fixing seat (4) to form a sealing annular gap.
2. The adjustable core frame assembly according to claim 1, characterized in that an oil cup (16) is provided at the top end of the backup nut (13).
3. Adjustable core frame assembly according to claim 1, characterized in that the bearing gland (6) is fitted with an oil seal to form a secondary seal.
4. Adjustable core holder assembly according to claim 1, characterized in that the half moon shaped fixing seat (1) and the upper fixing seat (3) are fixed by fixing bolts (14) and gaskets (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131399.7A CN107716889B (en) | 2017-11-15 | 2017-11-15 | Adjustable core frame assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131399.7A CN107716889B (en) | 2017-11-15 | 2017-11-15 | Adjustable core frame assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107716889A CN107716889A (en) | 2018-02-23 |
| CN107716889B true CN107716889B (en) | 2023-09-01 |
Family
ID=61216112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711131399.7A Active CN107716889B (en) | 2017-11-15 | 2017-11-15 | Adjustable core frame assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107716889B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333707A (en) * | 1964-05-19 | 1967-08-01 | Western States Machine Co | Mounting arrangement for basket of centrifugal |
| US3759591A (en) * | 1971-08-30 | 1973-09-18 | Beckman Instruments Inc | Centrifuge seal assembly and method |
| CN201632614U (en) * | 2010-02-11 | 2010-11-17 | 迁安市津唐球墨铸管有限公司 | Core frame rocker arm device of centrifuge |
| CN203018715U (en) * | 2012-12-26 | 2013-06-26 | 山西光华铸管有限公司 | Centrifuger core frame device |
| CN105465176A (en) * | 2016-01-15 | 2016-04-06 | 上海戴宝机械设备有限公司 | Self-lubricating bearing device and tubular bowl centrifuge |
| WO2016187823A1 (en) * | 2015-05-26 | 2016-12-01 | 许亮芳 | Axle main cone assembly |
| CN207615633U (en) * | 2017-11-15 | 2018-07-17 | 芜湖新兴铸管有限责任公司 | Adjustable core frame assembly |
-
2017
- 2017-11-15 CN CN201711131399.7A patent/CN107716889B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333707A (en) * | 1964-05-19 | 1967-08-01 | Western States Machine Co | Mounting arrangement for basket of centrifugal |
| US3759591A (en) * | 1971-08-30 | 1973-09-18 | Beckman Instruments Inc | Centrifuge seal assembly and method |
| CN201632614U (en) * | 2010-02-11 | 2010-11-17 | 迁安市津唐球墨铸管有限公司 | Core frame rocker arm device of centrifuge |
| CN203018715U (en) * | 2012-12-26 | 2013-06-26 | 山西光华铸管有限公司 | Centrifuger core frame device |
| WO2016187823A1 (en) * | 2015-05-26 | 2016-12-01 | 许亮芳 | Axle main cone assembly |
| CN105465176A (en) * | 2016-01-15 | 2016-04-06 | 上海戴宝机械设备有限公司 | Self-lubricating bearing device and tubular bowl centrifuge |
| CN207615633U (en) * | 2017-11-15 | 2018-07-17 | 芜湖新兴铸管有限责任公司 | Adjustable core frame assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107716889A (en) | 2018-02-23 |
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