Upper back-up roll changing device of cold rolling mill
By designing a support roller replacement device on the cold rolling mill including bench, V-shadow, jack and base, the problem of difficulty in extracting the broken roller body in the roll neck fracture accident in cold rolling production is solved, and rapid extraction is achieved and save time for emergency repairs.
Patent Information
- Application Number
- CN202420121440.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-01-18
AI Technical Summary
During the cold rolling production process, due to the large rolling force, the roll roll is prone to fatigue, wear and breakage after long-term use, resulting in a roll neck breakage accident, and it is difficult for ordinary benches to pull out the broken upper support roller, resulting in too long repair time.
A cold rolling mill upper support roller replacement device is designed, including a bench, a V-shaped saddle, a jack and a base. The V-shaped saddle is lifted through the jack and the upper support roller body is lifted, thereby quickly pulling out the broken upper support. Roller.
After the roll neck breaking accident, the broken upper support roller is quickly pulled out, saving the accident handling time and ensuring the smooth progress of production.
Smart Images
Figure CN222447702U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a support roll changing device on a cold rolling mill, belonging to the technical field of cold rolling production equipment in the metallurgical industry. Background Art
[0002] The cold rolling five-stand six-roll mill includes upper support rolls, upper intermediate rolls, upper working rolls, lower working rolls, lower intermediate rolls and lower support rolls. When the upper support rolls are replaced normally, the support rolls need to be replaced with benches. First, pull the lower support rolls out of the stand and place the support roll bench on the lower support rolls. After the lower support rolls are pushed into the mill with the bench, the upper support roll balance cylinder is retracted to drop the upper support rolls on the bench. The lower support rolls drive the upper support rolls placed on the bench out of the mill together, thus completing the replacement of the upper support rolls.
[0003] In the cold rolling production process, due to the large rolling force, the rollers are prone to fatigue wear and fracture after long-term use, and roller neck fracture accidents occur every year. The roller breaks at the roller neck, causing the roller bearing seat to separate from the roller body, and the weight of the support roller reaches 60 tons. Therefore, it is difficult to extract it from the rolling mill using only ordinary benches. In each roller fracture accident, emergency repairs take more than 10 hours. Utility Model Content
[0004] The utility model aims to provide a cold rolling mill upper support roll changing device, which can conveniently extract the broken upper support roll from the frame and solve the problems existing in the background technology.
[0005] The technical solution of the utility model is:
[0006] A cold rolling mill upper support roll changing device comprises a bench, a V-shaped saddle, a jack and a base, wherein the base is fixed on the bench, the V-shaped saddle is placed on the base, and a jack (4) is provided between the V-shaped saddle and the bench.
[0007] The V-shaped saddle comprises a V-shaped plate matched with an upper supporting roller and a synchronization rod fixed under the V-shaped plate. A base synchronization rod guide hole is provided on the base, and a bench synchronization rod guide hole is provided on the bench.
[0008] The synchronization rod fixed under the V-shaped plate and the base synchronization rod guide hole on the base and the bench synchronization rod guide hole on the bench are all four matched ones.
[0009] There are two jacks, which are symmetrically arranged on both sides of the base.
[0010] The jack is fixed on the bench.
[0011] The beneficial effect of the utility model is that after a fracture accident occurs to the roll neck of the upper support roll, the fractured roll body of the upper support roll can be conveniently pulled out from the frame, thereby saving the accident handling time and ensuring the smooth progress of production. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the utility model;
[0013] Figure 2 This is a schematic diagram of the bench of the utility model;
[0014] Figure 3 This is the front view of the base of the utility model;
[0015] Figure 4 This is a three-dimensional diagram of the base of the utility model;
[0016] Figure 5 This is the front view of the V-shaped saddle of the utility model;
[0017] Figure 6 This is a three-dimensional diagram of the V-shaped saddle of the utility model;
[0018] In the figure: bench 1, upper supporting roller 2, V-shaped saddle 3, jack 4, base 5, bench synchronization rod guide hole 6, base mounting threaded hole 7 on the bench, jack fixing threaded hole 8, base synchronization rod guide hole 9, base fixing hole 10, V-shaped plate 11, synchronization rod 12. DETAILED DESCRIPTION
[0019] The present invention will be further described below by way of examples with reference to the accompanying drawings.
[0020] See attached Figure 1-6 A support roll changing device for a cold rolling mill comprises a bench 1, a V-shaped saddle 3, a jack 4 and a base 5, wherein the base 5 is fixed on the bench 1, the V-shaped saddle 3 is placed on the base 5, and a jack 4 is provided between the V-shaped saddle 3 and the bench 1.
[0021] In this embodiment, refer to the attached Figure 1-6 , four bench synchronization rod guide holes 6, eight roller body base fixing screw holes 7 and eight threaded holes 8 for fixing two lifting jacks are processed on the bench 1.
[0022] The base 5 is mounted on the bench 1, a movable V-shaped saddle 3 is mounted on the base 5, and two jacks 4 are placed between the V-shaped saddle 3 and the base 5. Once a roll neck fracture accident occurs, the jacks 4 can be used to lift the V-shaped saddle 3 and the roll body of the upper support roller 2, thereby achieving the purpose of quickly extracting the broken support roller.
[0023] As shown in the figure, the base 5 is placed in the middle of the bench 1 and is fixed to the eight base screw holes 7 of the bench 1 using bolts. Four base synchronization rod guide holes 9 are opened on the base 5 according to the size of the synchronization rod 12 of the V-shaped saddle 3.
[0024] The V-shaped dimension of the V-shaped saddle 3 should take into account the deviation between the maximum roller diameter and the minimum roller diameter of the upper support roller 2, so as to ensure that the V-shaped saddle 3 can adapt to upper support rollers of different diameters. Four circular synchronization rods 12 are processed on the V-shaped saddle 3, which can be inserted into the base synchronization rod guide hole 9 and the bench synchronization rod guide hole 6.
Claims
1. A support roll changing device for a cold rolling mill, characterized in that: The invention comprises a bench (1), a V-shaped saddle (3), a jack (4) and a base (5), wherein the base (5) is fixed on the bench (1), the V-shaped saddle (3) is placed on the base (5), and the jack (4) is provided between the V-shaped saddle (3) and the bench (1).
2. The device for changing the upper support roll of a cold rolling mill according to claim 1, characterized in that: The V-shaped saddle (3) comprises a V-shaped plate (11) matched with the upper support roller (2) and a synchronization rod (12) fixed under the V-shaped plate (11); a base synchronization rod guide hole (9) is provided on the base (5); and a bench synchronization rod guide hole (6) is provided on the bench (1).
3. The device for changing the upper support roll of a cold rolling mill according to claim 2, characterized in that: The synchronization rod (12) fixed below the V-shaped plate (11), the base synchronization rod guide hole (9) on the base (5), and the bench synchronization rod guide hole (6) on the bench (1) are all four matching ones.
4. The device for changing the upper support roll of a cold rolling mill according to claim 1, characterized in that: There are two jacks (4), which are symmetrically arranged on both sides of the base (5).
5. A cold rolling mill upper support roll changing device according to claim 1 or 4, characterized in that: The jack (4) is fixed on the bench (1).