CN211757606U - Roller box axial clearance adjusting device - Google Patents
Roller box axial clearance adjusting device Download PDFInfo
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- CN211757606U CN211757606U CN202020225834.3U CN202020225834U CN211757606U CN 211757606 U CN211757606 U CN 211757606U CN 202020225834 U CN202020225834 U CN 202020225834U CN 211757606 U CN211757606 U CN 211757606U
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Abstract
The utility model provides a roller box axial clearance adjusting device, which is characterized in that a set of axial locking device is additionally arranged between an eccentric sleeve and a box body bottom plate, the axial clearance can be set according to requirements under the brand new condition of parts, and the abrasion clearance can be eliminated by properly adjusting the locking device under the condition that certain abrasion occurs when the roller box is used for a period of time, thereby achieving the use requirement; the problem of roll box use in the axial clearance easily changeable big is solved, rolled wire rod size precision has greatly been improved.
Description
Technical Field
The utility model belongs to the technical field of the roller box structure, concretely relates to roller box axial clearance adjusting device for reducing roller box axial clearance.
Background
In the wire rolling process, an oval-round rolling process pass is generally adopted, for example, a double-module rolling mill of Daneli company, in order to ensure the requirements of high-speed, high-yield and high-precision rolling, the overall structure is designed into two modules of 4 passes, wherein each module has 2 passes, the former module is a heavy module for heavy-duty rolling, a roller box of the former module is a 0H heavy roller box, the latter module is a light module, and a 150L roller box is adopted.
A Taneley type 150L roll box is a finished product frame secondary roll box of a Taneley line double-module rolling mill, roll ring hole types are all circular, the surface of a wire is mainly rounded, axial and radial gaps of the roll ring hole types play a vital role in the size precision of a finished product, particularly the axial gaps of the roll ring hole types have multiple influence factors and are difficult to control, common defects are designed for all the Taneley type roll boxes, and the problem also exists after the original imported roll box is used for a short time.
After the axial clearance is increased, the problems of misalignment of roll grooves of roll collars, roll dislocation and the like are easily caused in the high-speed rotating process of the two pairs of roll shafts, and further the ovality of finished wire rods is out of tolerance, and the ovality is more obvious particularly when small-specification products with the diameter of 5.5 and 5.0 are rolled.
With the continuous development of high-end products by downstream users, the requirements on the dimensional accuracy and the quality of a wire rod are increasingly strict, and particularly, the dimensional accuracy of the wire rod is required to reach C-level accuracy by a high-end tire bead cord, so that the problem of how to control the axial gap of a roller box and improve the dimensional accuracy of a wire rod is needed to be solved urgently.
Disclosure of Invention
The utility model aims at providing a roller box axial clearance adjusting device to solve the changeable big problem of roller box axial clearance.
The specific scheme is as follows: an axial clearance adjusting device of a roller box comprises a box body with a through upper end and a through lower end and a box body bottom plate arranged at one end of the bottom of the box body; the rotary rolling shaft assembly comprises a rotary rolling shaft and an eccentric sleeve sleeved on the rotary rolling shaft; the rotary rolling roller shaft assembly penetrates through the box body bottom plate to be inserted into the box body, and the eccentric sleeve is also provided with a boss part capable of abutting against the box body bottom plate;
still include axial locking device: the axial locking device comprises an axial locking shaft and a locking screw hole arranged on the box body bottom plate or the boss part, the axial locking shaft is screwed and installed in the locking screw hole, and one end of the axial locking shaft extends convexly and abuts against the boss part or the box body bottom plate.
The utility model discloses a further technical scheme does: the locking screw hole is arranged on the box body bottom plate and is approximately parallel to the axial direction of the rotary rolling roll shaft.
The utility model discloses a further technical scheme does: the anti-loosening device comprises a fastening jackscrew and a fastening screw hole vertically penetrating through the fastening screw hole, the fastening screw hole is arranged on the box body bottom plate, and the fastening jackscrew is screwed and installed in the fastening screw hole.
The utility model discloses a further technical scheme does: the bottom end of the eccentric sleeve is provided with a bearing seat and a thrust bearing assembly, and the bottom end of the rotary rolling roll shaft is inserted into the thrust bearing; the front end of the box body is provided with a sealing plate, and the front end of the rotary rolling roll shaft penetrates through and protrudes out of the sealing plate.
The utility model discloses a further technical scheme does: the two rotary rolling roller shaft assemblies are respectively a left-handed roller shaft assembly and a right-handed roller shaft assembly.
The utility model discloses a further technical scheme does: two oil film bearings are arranged in the eccentric sleeve and sleeved on the spin-rolling roll shaft through the two oil film bearings.
Has the advantages that: the roller box axial clearance adjusting device of the utility model adds a set of axial locking device between the eccentric sleeve and the box body bottom plate, can set the axial clearance according to the requirement under the brand new condition of the parts, and can eliminate the abrasion clearance by properly adjusting the locking device under the condition that the roller box has certain abrasion after being used for a period of time, thereby achieving the use requirement; the problem of roll box use in the axial clearance easily changeable big is solved, rolled wire rod size precision has greatly been improved.
Drawings
FIG. 1 is a front view of the roll box axial gap adjustment apparatus of the present invention;
FIG. 2 shows a cross-sectional view of FIG. 1;
fig. 3 shows a partial enlarged view at a of fig. 2.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
Referring to fig. 1 and 2, the embodiment provides an axial gap adjusting device for a roller box, and specifically, the axial gap adjusting device comprises a double-shaft roller box, the double-shaft roller box comprises a box body 6 with upper and lower ends penetrating through, and a box body bottom plate 8 arranged at one end of the bottom of the box body 6, in the embodiment, the box body bottom plate 8 is connected to the open end of the box body 6 and closes the bottom opening of the box body 6.
The roller box is also provided with two groups of rotary roller shaft assemblies which are respectively a left-handed roller shaft assembly and a right-handed roller shaft assembly. Taking the left-handed roll assembly as an example, the left-handed roll shaft assembly comprises a left-handed roll shaft 1 and a left-handed roll shaft eccentric sleeve 7 sleeved on the left-handed roll shaft 1; the front end and the rear end in the left-handed shaft eccentric sleeve 7 are respectively provided with a front-end oil film bearing 5 and a rear-end oil film bearing 9, so that the left-handed roller shaft 1 is sleeved on the left-handed roller shaft 1 through the two oil film bearings, and the left-handed roller shaft 1 smoothly rotates relative to the left-handed shaft eccentric sleeve 7.
Wherein, one end of the bottom of the left-handed shaft eccentric sleeve 7 is also provided with a first bearing seat 10 and a first thrust bearing assembly 11 arranged in the first bearing seat 10, and the bottom end of the left-handed roller shaft is inserted in the first thrust bearing, so that the rear end bearing installation is realized; meanwhile, the front end of the box body 6 is provided with a first sealing plate 4, the first sealing plate 4 is provided with an internal and external oil throwing sealing ring and a wear-resisting ring, the front end of the left-handed roll shaft 1 penetrates through and protrudes out of the sealing plate 4, and the front end of the left-handed roll shaft abuts against the first sealing plate 4 through the wear-resisting ring, so that front end bearing installation is realized.
Similarly, the right-hand roll shaft assembly comprises a preferred roll shaft 16 and a right-hand eccentric sleeve 15, the bottom end of which is provided with a second bearing seat 14 and a second thrust bearing, and the front end of the box 6 is provided with a second sealing plate assembly.
Meanwhile, the two rolling shaft assemblies penetrate through the box bottom plate 8 to be inserted into the box 6, and the two eccentric sleeves are provided with boss parts capable of abutting against the outer side surface of the box bottom plate 8.
In order to realize the axial clearance adjustment and the adjustment after abrasion, the embodiment is provided with an axial locking device: the axial locking device comprises an axial locking shaft 19 and a locking screw hole which is arranged on the box body bottom plate 8 and penetrates through the box body bottom plate up and down, the axial locking shaft 19 is installed in the locking screw hole in a threaded mode, one end of the bottom end of the axial locking shaft is protruded and abutted to the boss part of the left-handed shaft eccentric sleeve 7, and similarly, the axial locking device with the same structure is also arranged at the corresponding position of the right-handed shaft eccentric sleeve 15.
In this embodiment, the locking screw hole is disposed on the bottom plate 8 of the box body and parallel to the axial direction of the spin-rolling roller shaft, thereby achieving direct adjustment of the axial gap.
In order to ensure stable gap during rolling, the embodiment further comprises a locking device which comprises a fastening screw and a fastening screw hole vertically penetrating through the locking screw hole, in the embodiment, the fastening screw hole is arranged on the box body bottom plate 8, and the fastening screw is screwed in the fastening screw hole.
The clearance of the thrust bearing is a standard value and is 0.01-0.03mm after being assembled, the clearance between the eccentric sleeve and the eccentric adjusting device and between the eccentric sleeve and the supporting device is 0.05-0.08mm under the condition of higher processing precision, and the clearance is generally more than 0.2mm after the eccentric sleeve is frequently abraded by seasonings after being used for a period of time, so that the problems of misalignment of a roller ring roller groove, roller dislocation and the like are caused, and further, the ovality of a finished wire rod is out of tolerance. Therefore, the bottom plate 8 of the box body is close to the boss part/lug of the eccentric sleeve for drilling and tapping, the axial locking shaft for axial locking is additionally arranged, when a new roller box is assembled or an axial out-of-tolerance roller box is repaired, the axial locking shaft is adjusted to tightly push the eccentric sleeve with proper torque and reserve a gap of 0.02mm, the eccentric sleeve is ensured to freely rotate in the flavoring process, and then the side surface of the axial locking shaft is tightly pushed against the axial locking shaft 19 by using a locking screw, namely a fastening jackscrew, so that the looseness caused by vibration in the high-speed operation of the roller box is prevented.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. An axial clearance adjusting device of a roller box comprises a box body with a through upper end and a through lower end and a box body bottom plate arranged at one end of the bottom of the box body; the rotary rolling shaft assembly comprises a rotary rolling shaft and an eccentric sleeve sleeved on the rotary rolling shaft; the rotary rolling roller shaft assembly penetrates through the box body bottom plate to be inserted into the box body, and the eccentric sleeve is also provided with a boss part capable of abutting against the box body bottom plate;
the device is characterized by further comprising an axial locking device:
the axial locking device comprises an axial locking shaft and a locking screw hole arranged on the box body bottom plate or the boss part, the axial locking shaft is screwed and installed in the locking screw hole, and one end of the axial locking shaft extends convexly and abuts against the boss part or the box body bottom plate.
2. The roller housing axial gap adjusting apparatus according to claim 1, characterized in that: the locking screw hole is arranged on the box body bottom plate and is approximately parallel to the axial direction of the rotary rolling roll shaft.
3. The roller housing axial gap adjusting apparatus according to claim 2, characterized in that: the anti-loosening device comprises a fastening jackscrew and a fastening screw hole vertically penetrating through the fastening screw hole, the fastening screw hole is arranged on the box body bottom plate, and the fastening jackscrew is screwed and installed in the fastening screw hole.
4. A roller housing axial gap adjusting apparatus according to any one of claims 1 to 3, characterized in that: the bottom end of the eccentric sleeve is provided with a bearing seat and a thrust bearing assembly, and the bottom end of the rotary rolling roll shaft is inserted into the thrust bearing; the front end of the box body is provided with a sealing plate, and the front end of the rotary rolling roll shaft penetrates through and protrudes out of the sealing plate.
5. The roller housing axial gap adjusting apparatus according to claim 4, characterized in that: the two rotary rolling roller shaft assemblies are respectively a left-handed roller shaft assembly and a right-handed roller shaft assembly.
6. The roller housing axial gap adjusting apparatus according to claim 5, characterized in that: two oil film bearings are arranged in the eccentric sleeve and sleeved on the spin-rolling roll shaft through the two oil film bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020225834.3U CN211757606U (en) | 2020-02-28 | 2020-02-28 | Roller box axial clearance adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020225834.3U CN211757606U (en) | 2020-02-28 | 2020-02-28 | Roller box axial clearance adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211757606U true CN211757606U (en) | 2020-10-27 |
Family
ID=72909881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020225834.3U Active CN211757606U (en) | 2020-02-28 | 2020-02-28 | Roller box axial clearance adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211757606U (en) |
-
2020
- 2020-02-28 CN CN202020225834.3U patent/CN211757606U/en active Active
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