CN214108306U - Secondary axial locking device for lower roll system of section steel rolling mill - Google Patents
Secondary axial locking device for lower roll system of section steel rolling mill Download PDFInfo
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- CN214108306U CN214108306U CN202022158785.9U CN202022158785U CN214108306U CN 214108306 U CN214108306 U CN 214108306U CN 202022158785 U CN202022158785 U CN 202022158785U CN 214108306 U CN214108306 U CN 214108306U
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- wrench
- rolling mill
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Abstract
The utility model relates to a section steel rolling mill lower roll system secondary axial locking device, including secondary locking pneumatic cylinder, connecting rod one, connecting rod two, connecting rod three, connecting rod four, spanner one, spanner two, spanner three, left-handed nut and right-handed nut. Compared with the prior art, its beneficial effect is: on the basis of the original lower roller system locking device, a gap reserved between a locking nut washer and a locking block of the original locking device is eliminated, the lower roller system is guaranteed to be locked without a gap during normal rolling while the lower roller locking plate bolt has the automatic locking and loosening functions, the problem of locking failure caused by axial movement due to the gap is solved, the working reliability of a rolling mill is improved, the probability of generation of defects such as flash, warping and the like is reduced, and the precision and yield of rolled products are improved.
Description
Technical Field
The utility model relates to the technical field of metal smelting, especially, relate to a section steel rolling mill lower roll system secondary axial locking device.
Background
In the metal smelting process, the precision of a product rolled by a rolling mill is mainly influenced by the rigidity of the rolling mill, the rolling process and the roll pass. In steel rolling, in order to prevent the rollers from axially moving, a hydraulic cylinder is usually used to drive a locking device to lock the upper and lower roller systems on the frame. At present, after the conventional upper and lower roller systems are locked and assembled, a certain gap is left between a lock nut washer and a locking block (see fig. 1) so that the locking device has an automatic locking and unlocking function under the driving of a hydraulic cylinder.
For a cogging type steel rolling mill, due to the fact that axial force is large, after a roll pass is rolled for a period of time, due to the influence of axial clearance reserved by a lower roll, locking is often unreliable (failure), looseness is caused by rolling impact, axial movement is generated, dislocation of the upper pass and the lower pass of the roll occurs, and the defects of insufficient precision, flash, warping and the like of a rolled product occur.
SUMMERY OF THE UTILITY MODEL
For overcoming the prior art defect, the utility model provides a technical problem provides a section steel rolling mill lower roll is secondary axial locking device, on former lower roll system locking device's basis, the clearance that leaves between cancellation former locking device lock nut packing ring and the latch segment, when can realizing that lower roll locking plate bolt has automatic locking and unclamps the function, guarantee that lower roll system zero clearance locks when normal rolling, solved and arouse the axial float to lead to the locking inefficacy problem because of the clearance, the reliability of rolling mill work has been improved, the overlap has been reduced, the probability that defects such as song sticks up produced, the precision and the yield of rolling product have been improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the lower roll system secondary axial locking device of the section steel rolling mill comprises two secondary locking hydraulic cylinders, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first wrench, a second wrench, a third wrench, a left-handed nut and a right-handed nut, and is characterized in that the two secondary locking hydraulic cylinders are symmetrically arranged on the inlet side and the outlet side of a rolling mill operation side rack, and the bottoms of cylinder barrels of the secondary locking hydraulic cylinders are hinged on the rack through a base;
one end of the second spanner is hinged with the end part of a cylinder rod of a secondary locking hydraulic cylinder arranged on the inlet side of the rolling mill operation side rack, the other end of the second spanner is sleeved on a left-handed nut, the middle left position of the second spanner is hinged with a second connecting rod, and the second connecting rod is hinged with the first connecting rod; the number of the first wrenches is three, one end of each wrench is hinged with the second connecting rod or the first connecting rod, and the other end of each wrench is sleeved on the left-handed nut;
one end of the third wrench is hinged with the end part of a cylinder rod of a secondary locking hydraulic cylinder arranged on the outlet side of the rolling mill operation side rack, the other end of the third wrench is sleeved on a right-handed nut, the right-handed position in the middle of the third wrench is hinged with a fourth connecting rod, and the fourth connecting rod is hinged with the third connecting rod; the first wrenches are three, one end of each wrench is hinged with the fourth connecting rod or the third connecting rod, and the other ends of the wrenches are sleeved on the right-handed nuts respectively.
The second spanner and the third spanner are designed in a symmetrical structure; the first connecting rod and the third connecting rod are designed in a symmetrical structure; the second connecting rod and the fourth connecting rod are designed in a symmetrical structure.
And the second spanner and the first spanner synchronously rotate under the driving of a secondary locking hydraulic cylinder arranged on the inlet side of the rolling mill operation side rack, and the vertical rotation angles are respectively 30 degrees.
And the third spanner and the first spanner synchronously rotate under the driving of a secondary locking hydraulic cylinder arranged on the outlet side of the rolling mill operation side rack, and the vertical rotation angles are respectively 30 degrees.
The cylinder rods of the two secondary locking hydraulic cylinders extend out or retract simultaneously, so that the second spanner and the third spanner can be driven to drive the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod to drive the first spanner to loosen or tighten the left-handed nut and the right-handed nut.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the structure is simple, and the maintenance is convenient;
2) the lower roller locking bolt is ensured to have no axial movement in the steel rolling process, and the lower roller locking bolt has automatic locking and loosening functions in the axial adjustment and roller change processes;
3) the method has obvious effects on improving the product quality precision of the section mill and the reliability of equipment.
Drawings
FIG. 1 is a schematic structural view of a gap between a washer and a locking block of a conventional lock nut;
FIG. 2 is a schematic structural view of the state of the locking nut before the assembly of the present invention;
FIG. 3 is a schematic structural view of the lower roller system in a locked state after the assembly of the present invention;
fig. 4 is a schematic structural diagram of the loosening state of the lower roller system secondary axial locking device after the assembly of the utility model.
In the figure: 1-frame 2-secondary locking hydraulic cylinder 3-connecting rod one 4-connecting rod two 5-spanner one 6-spanner two 7-inlet side locking block 8-connecting rod three 9-connecting rod four 10-spanner three 11-left-handed nut 12-right-handed nut 13-outlet side locking block
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1-4, the utility model relates to a secondary axial locking device of a lower roll system of a section steel rolling mill, which comprises two secondary locking hydraulic cylinders 2, a first connecting rod 3, a second connecting rod 4, a third connecting rod 8, a fourth connecting rod 9, a first wrench 5, a second wrench 6, a third wrench 10, a left-handed nut 11 and a right-handed nut 12, wherein the two secondary locking hydraulic cylinders 2 are symmetrically arranged at the inlet side and the outlet side of a rolling mill operation side rack, and the bottom of a cylinder barrel of the secondary locking hydraulic cylinder 2 is hinged on the rack 1 through a base;
one end of the second wrench 6 is hinged with the end part of a cylinder rod of the secondary locking hydraulic cylinder 2 arranged on the inlet side of the rolling mill operation side rack, the other end of the second wrench is sleeved on the left-handed nut 11, the middle left position of the second wrench is hinged with a second connecting rod 4, and the second connecting rod 4 is hinged with a first connecting rod 3; the number of the first wrenches 5 is three, one end of each wrench is hinged with the second connecting rod 4 or the first connecting rod 3, and the other end of each wrench is sleeved on the left-handed nut 11;
one end of the third wrench 10 is hinged with the end part of a cylinder rod of the secondary locking hydraulic cylinder 2 arranged on the outlet side of the rolling mill operation side rack, the other end of the third wrench is sleeved on a right-handed nut 12, the right-handed position in the middle of the third wrench is hinged with a fourth connecting rod 9, and the fourth connecting rod 9 is hinged with a third connecting rod 8; the number of the first wrenches 5 is three, one end of each wrench is hinged with the fourth connecting rod 9 or the third connecting rod 8, and the other end of each wrench is sleeved on the right-handed nut 12.
The second wrench 6 and the third wrench 10 are designed to be symmetrical structures; the first connecting rod 3 and the third connecting rod 8 are designed to be symmetrical structures; the second connecting rod 4 and the fourth connecting rod 9 are designed to be symmetrical structures.
The second spanner 6 and the first spanner 5 are driven by a secondary locking hydraulic cylinder 2 arranged on the inlet side of the rolling mill operation side rack to synchronously rotate, and the vertical rotation angles are respectively 30 degrees.
The third spanner 10 and the first spanner 5 are driven by a secondary locking hydraulic cylinder 2 arranged on the outlet side of the rolling mill operation side rack to synchronously rotate, and the vertical rotation angles are respectively 30 degrees.
The cylinder rods of the two secondary locking hydraulic cylinders 2 extend or retract simultaneously, so that the second wrench 6 and the third wrench 10 can be driven, the first connecting rod 3, the second connecting rod 4, the third connecting rod 8 and the fourth connecting rod 9 can be driven to drive the first wrench 5 to loosen or tighten the left-handed nut 11 and the right-handed nut 12.
Further, before the utility model discloses secondary locking device assembles, need make 4 left-handed nuts 11 of entrance side and 4 right-handed nuts 12 of exit side all be in vertical state respectively to in the coplanar, available guiding rule inspection (see fig. 2).
When steel rolling is carried out, the secondary locking hydraulic cylinder 2 is completely retracted, the first wrench, the second wrench and the third wrench are all in a lower 30-degree state, and the lower roller system is in a locking state; when the roller needs to be adjusted and replaced, the secondary locking hydraulic cylinder 2 extends out simultaneously, the first spanner, the second spanner and the third spanner are all in the state of 30 degrees, the nuts 11 and 12 on the inlet side locking block 7 and the outlet side locking block 13 are loosened by one sixth of the pitch, a required gap is generated between the locking nut washer and the inlet side locking block 7 and the outlet side locking block 13, and then the locking plate is opened through hydraulic driving of the original roller system locking device.
Claims (5)
1. The lower roll system secondary axial locking device of the section steel rolling mill comprises two secondary locking hydraulic cylinders, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first wrench, a second wrench, a third wrench, a left-handed nut and a right-handed nut, and is characterized in that the two secondary locking hydraulic cylinders are symmetrically arranged on the inlet side and the outlet side of a rolling mill operation side rack, and the bottoms of cylinder barrels of the secondary locking hydraulic cylinders are hinged on the rack through a base;
one end of the second spanner is hinged with the end part of a cylinder rod of a secondary locking hydraulic cylinder arranged on the inlet side of the rolling mill operation side rack, the other end of the second spanner is sleeved on a left-handed nut, the middle left position of the second spanner is hinged with a second connecting rod, and the second connecting rod is hinged with the first connecting rod; the number of the first wrenches is three, one end of each wrench is hinged with the second connecting rod or the first connecting rod, and the other end of each wrench is sleeved on the left-handed nut;
one end of the third wrench is hinged with the end part of a cylinder rod of a secondary locking hydraulic cylinder arranged on the outlet side of the rolling mill operation side rack, the other end of the third wrench is sleeved on a right-handed nut, the right-handed position in the middle of the third wrench is hinged with a fourth connecting rod, and the fourth connecting rod is hinged with the third connecting rod; the first wrenches are three, one end of each wrench is hinged with the fourth connecting rod or the third connecting rod, and the other ends of the wrenches are sleeved on the right-handed nuts respectively.
2. The secondary axial locking device of a lower roll system of a section steel rolling mill as claimed in claim 1, wherein the second wrench and the third wrench are designed in a symmetrical structure; the first connecting rod and the third connecting rod are designed in a symmetrical structure; the second connecting rod and the fourth connecting rod are designed in a symmetrical structure.
3. A secondary axial locking device of a lower roll system of a section mill as claimed in claim 1, wherein the second wrench and the first wrench are rotated synchronously by a secondary locking hydraulic cylinder installed at an inlet side of the operation side stand of the mill at an angle of 30 ° each.
4. A secondary axial locking device of a lower roll system of a section mill as claimed in claim 1, wherein the third wrench and the first wrench are rotated synchronously by the driving of a secondary locking hydraulic cylinder installed at the exit side of the operation side stand of the mill, and the angles of the up-down rotation are each 30 °.
5. The secondary axial locking device of a lower roll system of a section steel rolling mill as claimed in claim 1, wherein the cylinder rods of the two secondary locking hydraulic cylinders extend or retract simultaneously, so as to drive the second wrench and the third wrench and drive the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod to drive the first wrench to loosen or tighten the left-handed nut and the right-handed nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022158785.9U CN214108306U (en) | 2020-09-27 | 2020-09-27 | Secondary axial locking device for lower roll system of section steel rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022158785.9U CN214108306U (en) | 2020-09-27 | 2020-09-27 | Secondary axial locking device for lower roll system of section steel rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214108306U true CN214108306U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022158785.9U Active CN214108306U (en) | 2020-09-27 | 2020-09-27 | Secondary axial locking device for lower roll system of section steel rolling mill |
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| Country | Link |
|---|---|
| CN (1) | CN214108306U (en) |
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- 2020-09-27 CN CN202022158785.9U patent/CN214108306U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20220803 Address after: 114000 a, Jianguo East Road, Lishan District, Anshan City, Liaoning Province Patentee after: Anshan Iron and steel heavy machinery design and Research Institute Co.,Ltd. Address before: 114000 a, Jianguo East Road, Lishan District, Anshan City, Liaoning Province Patentee before: ANGANG HEAVY MACHINERY Co.,Ltd. |