Lower rolling line step pad protection device for hot rolling
By installing a bracket and a soft rubber plate as a protective device on the lower support roller bearing seat, the problem of foreign objects entering the lower rolling line device was solved, improving equipment accuracy and production safety, reducing maintenance workload, and increasing production efficiency.
Patent Information
- Application Number
- CN202520460139.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-17
AI Technical Summary
The existing rolling line equipment has a deviation in the stroke of the AGC cylinders on both sides of the rolling mill, which leads to inaccurate zeroing of the rolling mill, easily causing deviation and steel accumulation accidents. In addition, the equipment wears out severely, maintenance work is cumbersome, and labor intensity is high.
A bracket and a movable baffle are installed on the lower support roller bearing seat, and a soft rubber plate is installed on the crossbeam and fixed with bolts to cover the movable baffle to prevent foreign objects from entering and protect the lower rolling line device.
It improves the accuracy of the rolling mill's horizontal deviation, prevents foreign objects from entering, extends equipment life, reduces downtime, lowers labor intensity, and increases production efficiency.
Smart Images
Figure CN223698890U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the steel rolling equipment technical field, namely a hot rolling lower rolling line ladder pad protection device. BACKGROUND
[0002] In the prior art, the R1-F5 rolling mill used in the steel plant is equipped with a set of lower rolling line adjusting device. It is located between the lower support roller bearing seat and the trolley, and is connected with the trolley support frame, which is composed of 13 ladder plates and is driven by a hydraulic cylinder. The main function is to compensate for the height of the lower rolling line with the wear of the work roll and the support roll diameter, so as to ensure that the rolling center line is within the allowable deviation range. Among them, the thickness of the lower rolling line of R1-R2 rolling mill is 100-269mm (13mm per step), the thickness of the rolling line of F1-F3 rolling mill is 100-249.5mm (11.5mm per step), and the thickness of the lower rolling line of F4-F5 rolling mill is 100-230mm (10mm per step). The lower rolling line device is located above the trolley, which is the lowermost part of the rolling mill. Although a protective cover is installed on the lower rolling line device for protection, since its length is the same as that of the lower support roll body, it can only protect the ladder plates below the roll body, and cannot protect the lower rolling line ladder plates in the bearing seat area on both sides. When changing the roll, the lower support roll needs to be lifted to a certain height before the lower rolling line device can be moved. Foreign matter such as debris may fall in this area and be brought into the lower rolling line ladder plate, forming foreign matter between the lower support roll bearing block and the lower rolling line, which may cause a certain deviation of the AGC cylinder stroke on both sides of the rolling mill, inaccurate zero setting of the rolling mill, and large deviation, which may cause the rolling piece to deviate, and even cause the steel to pile up, resulting in accident shutdown. On the other hand, the working environment is extremely harsh, and the iron oxide scale and oil sludge flow into the ladder plates of the lower rolling line, which may reach a certain thickness and cause a certain deviation of the AGC cylinder stroke on both sides of the rolling mill, inaccurate zero setting of the rolling mill, and large deviation, which may cause the steel to pile up. In addition, due to long-term erosion of iron oxide scale and oil sludge, the lower rolling line ladder plate may have pits and wear, which may need to be polished or replaced, and 6-8 people may be needed for 8 hours. A ladder pad device is needed to block the iron oxide scale, oil sludge and other foreign matter from falling into the lower support roll. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at the above-mentioned shortage and provides a hot rolling lower rolling line ladder pad protection device which is simple in structure and can block the iron oxide scale, oil sludge, debris and other foreign matter from falling into the lower support roll.
[0004] The technical solution of the utility model is: a kind of hot rolling lower rolling line ladder pad protection device, support is installed on the lower support roll bearing seat body of rolling mill equipment, movable baffle is installed on support, soft rubber plate is installed on crossbeam, and the other side of soft rubber plate is flattened to completely cover movable baffle.
[0005] Soft rubber plate is connected by a strip-shaped plate crimping and through multiple bolts on crossbeam.
[0006] The utility model has the advantages that: 1, improve and increase the protection of lower rolling line ladder plate, solve the gap between baffle and protective cover when original baffle supports roll lifting or descending and the problem of lack of protection when rolling line ladder plate is moved, the protection effect of lower rolling line device is obvious, effectively block the oxidation scale, oil sludge, debris and other foreign matters from being brought in and falling on ladder plate, improve the precision of rolling mill two sides horizontal deviation, prevent deviation, ensure production safety and avoid accidents.2, effectively reduce the erosion of oil sludge to ladder plate, ensure equipment precision, prolong the installation time of lower rolling line device, save spare parts cost, reduce downtime, reduce labor intensity, reduce hot downtime, improve production efficiency.
[0007] The embodiments of the utility model will be described in further detail below with reference to the drawings. DRAWINGS
[0008] Figure 1 It is the structure diagram of the utility model.
[0009] Figure 2 It is the reference diagram of use state. CONCRETE IMPLEMENTING METHOD
[0010] Referring to Figure 1 、 2 , the names of parts are as follows: support roll bearing seat body 1, support 2, crossbeam 3, movable baffle 4, soft rubber plate 5, pin shaft 6, strip-shaped pressing plate 7, protective cover 8, rolling line ladder plate 9, trolley 10.
[0011] Referring to Figure 1 、 2 , a kind of hot rolling lower rolling line ladder pad protection device, support 2 is installed on the lower support roll bearing seat body 1 of rolling mill equipment, movable baffle 4 is installed on support 2, movable baffle 4 is connected with crossbeam 2 by the pin shaft 6 below the two sides of crossbeam 3. Soft rubber plate 5 is installed on crossbeam 2, and the other side of soft rubber plate 5 is flattened to completely cover movable baffle 4. Soft rubber plate 5 is connected by a strip-shaped plate 7 crimping and through multiple bolts.
[0012] Make a Φ6*4 hole in the crossbeam 3; select a 4mm*800mm*1300mm (thickness×length×width) soft rubber sheet 5, and fix one side to the crossbeam 3 with Φ6*4 bolts. Flatten the other side of the soft rubber sheet 5 so that it completely covers the movable baffle 4, leaving enough room for adjustment. When the movable baffle 4 is raised and aligned with the protective cover 8 (see...),... Figure 2 The soft rubber plate 5 extends to the protective cover 8, fully covering the movable baffle 4, in a horizontal docking manner.
[0013] Usage: Install one set of this device on the working side and the transmission side of the lower support roller bearing housing 1. When the support roller is not in use as a spare roller, the movable baffle 4 is in a lowered state due to its own weight. When the support roller is in use and falls to its lowest position (the bearing plate at the bottom of the bearing housing falls to the lowest position of the lower rolling line), the movable baffle 4 rises and aligns horizontally with the front end of the protective cover 8 below the roller body. A soft rubber plate 5 is installed on the movable baffle 4. The soft rubber plate 5 automatically lays flat on the movable baffle 4 and extends to the protective cover 8 below the roller body. Regardless of whether the support roller is raised or lowered, the soft rubber plate 5 will always lie flat on the protective cover 8 of the lower rolling line below the roller body, forming a protective barrier between the bearing housing and the lower rolling line protective cover 8, effectively preventing foreign objects such as sludge and debris from falling onto the step plate 9.
[0014] The above description is merely a specific embodiment of this utility model, and the various examples do not constitute a limitation on the substantive content of this utility model.
Claims
1. A protective device for a step pad on a hot rolling mill line, characterized in that... A bracket (2) is installed on the lower support roll bearing seat body (1) of the rolling mill equipment. A movable baffle (4) is installed on the bracket (2). A soft rubber plate is installed on the crossbeam (3). The other side of the soft rubber plate (5) is flattened so that it completely covers the movable baffle (4).
2. A hot rolling mill step pad protection device according to claim 1, characterized in that... The soft rubber sheet (5) is pressed together by a strip plate (7) and fixed together by multiple bolts.