CN220149627U - Screw pre-tightening device for ingot pulling system of electron beam cold bed smelting furnace - Google Patents
Screw pre-tightening device for ingot pulling system of electron beam cold bed smelting furnace Download PDFInfo
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- CN220149627U CN220149627U CN202321607657.5U CN202321607657U CN220149627U CN 220149627 U CN220149627 U CN 220149627U CN 202321607657 U CN202321607657 U CN 202321607657U CN 220149627 U CN220149627 U CN 220149627U
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- spring
- tensioning
- device shell
- tensioning assembly
- electron beam
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- 238000010894 electron beam technology Methods 0.000 title claims abstract description 16
- 238000003723 Smelting Methods 0.000 title claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
A lead screw preloading device for electron beam cold bed smelting furnace draws spindle system relates to lead screw preloading device's technical field, and its structure is: the device comprises a support frame, a tensioning device shell, a tensioning assembly, a compression sleeve and a bolt, wherein the middle of the support frame is connected with the tensioning device shell, the tensioning assembly is arranged inside the tensioning device shell, a thrust bearing 1 and a thrust bearing 2 are arranged between the tensioning assembly and the tensioning device shell, a spring is arranged in the tensioning assembly, the compression sleeve is arranged at the bottom of the spring, the bolt penetrates through the compression sleeve, the spring and the tensioning assembly, the upper end of the tensioning assembly penetrates out of the tensioning device shell, and the thrust bearing 1 and the thrust bearing 2 are compressed through a round nut and a bearing pressing plate; the bolt passes through the compression sleeve and the tensioning assembly and is connected with the screw rod. The utility model has the beneficial effects that: the rigidity of the screw rod can be effectively improved, and the problems that the surface quality of the ingot casting and the service life of the screw rod nut are short due to insufficient rigidity of the screw rod in the ingot casting drawing process of the electron beam cold bed smelting furnace are solved.
Description
Technical Field
The utility model relates to the technical field of screw pre-tightening devices, in particular to a screw pre-tightening device for an ingot pulling system of an electron beam cold bed smelting furnace.
Background
The main function of the ingot pulling system of the electron beam cold bed smelting furnace is to draw the metal which is gradually cooled and condensed in the crystallizer into a finished ingot, and the ingot pulling system generally adopts two screw pairs which are vertically and symmetrically arranged as a transmission mechanism, and realizes the function of drawing the ingot by moving down screw nuts and driving a collet. If the lead screw stroke is longer in the process of drawing the ingot, the lead screw can twist along with the lead screw due to insufficient rigidity, so that the surface quality of the finished ingot is affected, and the abrasion of the nut is aggravated due to the increase of the deflection of the lead screw in the process, so that the service life of the lead screw nut can be shortened.
The lead screw transmission is always the preferred transmission mode of the ingot pulling system of the electron beam melting furnace due to the characteristics of high transmission precision, stable operation, easy realization of high-precision control and the like, the production capacity of the electron beam melting furnace is continuously improved along with the development of the domestic titanium market in recent years, the strokes of the ingot pulling system and the lead screw are longer and longer, the lead screw in the lead screw structure with the long stroke can be distorted due to insufficient rigidity, the stability of the ingot pulling transmission mechanism is affected, and then the quality defect is generated on the surface of an ingot. At present, a common method for the situation is to arrange nuts at the upper end and the lower end of a screw rod and load the screw rod with pre-tightening force through fastening the nuts to ensure the rigidity of the screw rod.
The method for pre-tightening the screw by arranging the nuts at the upper end and the lower end of the screw is adopted at present, the pre-tightening force is a fixed value, the later adjustment is difficult, and the screw pre-tightening force at the two sides of the ingot pulling system cannot be ensured to be consistent in the adjustment process.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a screw pre-tightening device for an ingot pulling system of an electron beam cold bed smelting furnace, so as to solve the technical problems.
The utility model provides a screw pre-tightening device for an ingot pulling system of an electron beam cold bed smelting furnace, which comprises the following structure: the device comprises a support frame, a tensioning device shell, a tensioning assembly, a compression sleeve and a bolt, wherein the middle of the support frame is connected with the tensioning device shell, the tensioning assembly is arranged inside the tensioning device shell, a thrust bearing 1 and a thrust bearing 2 are arranged between the tensioning assembly and the tensioning device shell, a spring is arranged in the tensioning assembly, the bottom of the spring is provided with the compression sleeve, the bolt penetrates through the compression sleeve, the spring and the tensioning assembly, and the upper end of the tensioning assembly penetrates out of the tensioning device shell and compresses the thrust bearing 1 and the thrust bearing 2 through round nuts and bearing pressure plates; the bolt passes through the compression sleeve and the tensioning assembly and is connected with the screw rod.
The support frame is formed by welding a support panel, a rib plate 1 and a rib plate 2.
The tensioning device shell is of a hollow cylinder structure, a flange is arranged on the outer ring of the tensioning device shell, and the tensioning device shell is connected with the support panel through the flange.
The tensioning assembly comprises a spring mounting seat, a spring pressing plate, a pressing cover and a spring, wherein the spring is mounted inside the spring mounting seat, the spring pressing plate is mounted below the spring, and the pressing cover is connected with the spring mounting seat through a bolt.
The utility model has the beneficial effects that: the rigidity of the screw rod can be effectively improved, the problems that the surface quality of the cast ingot is affected and the service life of the screw rod nut is short due to insufficient rigidity of the screw rod in the process of drawing the cast ingot by the electron beam cold bed smelting furnace ingot pulling system are solved, meanwhile, the device can conveniently realize the adjustment of the screw rod pretightening force, and the pretightening force of the screw rods on two sides is well ensured to be consistent; when the screw rod pre-tightening device breaks down, the screw rod pre-tightening device is detached to be maintained independently, so that maintenance work of the whole system is simplified.
Drawings
FIG. 1 is a cross-sectional structural view of the present utility model;
FIG. 2 is a sectional view of the present utility model in use;
in the figure: 1. the device comprises a support frame, 2, a tensioning device shell, 3, a tensioning assembly, 4, a compression sleeve, 5, a bolt, 6, round nuts, 7, a bearing pressing plate, 8, thrust bearings 1,9, thrust bearings 2, 10, a screw rod, 101, a support panel, 102, rib plates 1, 103, rib plates 2, 301, a spring mounting seat, 302, a spring pressing plate, 303, a pressing cover, 304 and a spring.
Detailed Description
Example 1
As shown in fig. 1-2, the utility model provides a screw pre-tightening device for an ingot pulling system of an electron beam cold bed smelting furnace, which comprises the following structure: the novel tension device comprises a support frame 1, a tension device shell (2), a tension assembly (3), a compression sleeve 4 and a bolt 5, wherein the middle of the support frame 1 is connected with the tension device shell 2, the tension assembly 3 is arranged inside the tension device shell 2, a thrust bearing 18 and a thrust bearing 29 are arranged between the tension assembly 3 and the tension device shell 2, a spring 304 is arranged in the tension assembly 3, the compression sleeve 4 is arranged at the bottom of the spring 304, the bolt 5 passes through the compression sleeve 4, the spring 304 and the tension assembly 3, and the upper end of the tension assembly 3 passes out of the tension device shell 2 and compresses the thrust bearing 18 and the thrust bearing 29 through a round nut 6 and a bearing pressure plate 7; the bolt 5 passes through the compression sleeve 4 and the tensioning assembly 3 to be connected with the screw rod 10;
the support frame 1 is formed by welding a support panel 101, a rib plate 1102 and a rib plate 2103;
the tensioning device shell 2 is of a hollow cylindrical structure, a flange is arranged on the outer ring of the tensioning device shell 2, and the tensioning device shell 2 is connected with the support panel 101 through the flange;
the tensioning assembly 3 comprises a spring mounting seat 301, a spring pressing plate 302, a pressing cover 303 and a spring 304, wherein the spring 304 is mounted inside the spring mounting seat 301, the spring pressing plate 302 is mounted below the spring 304, and the pressing cover 303 is connected with the spring mounting seat 301 through a bolt;
specifically, the whole support frame is welded on the wall of the ingot pulling chamber; the outer shell of the tensioning device is of a hollow cylinder structure, a flange is arranged on the outer ring of the tensioning device and used for being connected with the supporting frame, and the gland presses the spring into the spring mounting seat through the extrusion spring pressing plate in the installation process of the gland and the spring seat; the screw pre-tightening device is arranged below the screw as an independent unit and is connected with the device through a threaded hole reserved on the screw to provide pre-tightening force for the screw, and when the screw pre-tightening device fails, the screw pre-tightening device is detached for maintenance independently, so that maintenance work of the whole system is simplified.
Claims (4)
1. A lead screw preloading device for electron beam cold bed smelting furnace draws spindle system, its characterized in that: including support frame (1), straining device shell (2), tensioning assembly (3), compression sleeve (4) and bolt (5), be connected with straining device shell (2) in the middle of support frame (1), straining device shell (2) inside is provided with tensioning assembly (3), be provided with thrust bearing 1 (8) and thrust bearing 2 (9) between tensioning assembly (3) and straining device shell (2), be provided with spring (304) in tensioning assembly (3), spring (304) bottom is provided with compression sleeve (4), bolt (5) pass compression sleeve (4), spring (304) and tensioning assembly (3), straining device shell (2) are worn out to tensioning assembly (3) upper end to compress tightly thrust bearing 1 (8) and thrust bearing 2 (9) through round nut (6) and bearing clamp plate (7); the bolt (5) passes through the compression sleeve (4) and the tensioning assembly (3) to be connected with the screw rod (10).
2. A lead screw pretensioning apparatus for an electron beam cold hearth furnace ingot pulling system as defined in claim 1, wherein: the support frame (1) is formed by welding a support panel (101), a rib plate 1 (102) and a rib plate 2 (103).
3. A lead screw pretensioning apparatus for an electron beam cold hearth furnace ingot pulling system according to claim 2, wherein: the tensioning device is characterized in that the tensioning device shell (2) is of a hollow cylinder structure, a flange is arranged on the outer ring of the tensioning device shell (2), and the tensioning device shell (2) is connected with the support panel (101) through the flange.
4. A lead screw pretensioning apparatus for an electron beam cold hearth furnace ingot pulling system according to claim 3, wherein: the tensioning assembly (3) comprises a spring mounting seat (301), a spring pressing plate (302), a pressing cover (303) and a spring (304), wherein the spring (304) is mounted inside the spring mounting seat (301), the spring pressing plate (302) is mounted below the spring (304), and the pressing cover (303) is connected with the spring mounting seat (301) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321607657.5U CN220149627U (en) | 2023-06-25 | 2023-06-25 | Screw pre-tightening device for ingot pulling system of electron beam cold bed smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321607657.5U CN220149627U (en) | 2023-06-25 | 2023-06-25 | Screw pre-tightening device for ingot pulling system of electron beam cold bed smelting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220149627U true CN220149627U (en) | 2023-12-08 |
Family
ID=89014863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321607657.5U Active CN220149627U (en) | 2023-06-25 | 2023-06-25 | Screw pre-tightening device for ingot pulling system of electron beam cold bed smelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220149627U (en) |
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2023
- 2023-06-25 CN CN202321607657.5U patent/CN220149627U/en active Active
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