A steel feeding device for hot-rolled bulb flat steel rolling line

Abstract

This utility model relates to an auxiliary steel feeding device for a hot-rolled spherical flat steel upper rolling line, comprising a positioning plate, limiting bosses, guide rollers, bolts, and nuts. The limiting bosses are symmetrically fixed to the left and right ends of the top of the positioning plate. The bolts are disposed between the two limiting bosses, and both ends are locked to the outer end faces of the limiting bosses by nuts. The guide rollers are disposed between the two limiting bosses and are rotatably connected to the bolts. This utility model can be used universally in products within a certain specification range, optimizes the steel feeding stability of the upper rolling line pass, and improves the running condition of the rolled piece. Moreover, the rolling contact with the rolled piece avoids scratching the hot-rolled piece, and the guide rollers are very easy to replace after wear.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling technology, and in particular to an auxiliary steel feeding device for a hot-rolled spherical flat steel rolling line. Background Technology

[0002] In the hot rolling process of bulb flat steel, when the rolled piece enters the die of the upper rolling line with the assistance of the swing table, the rolled piece often fails to enter the die smoothly due to accidents such as top guide plate and top crossbeam, caused by the upward tilt of the rolled piece and the certain distance between the end of the rolled piece and the die. This results in intermediate scrap and quality defects, affecting various production indicators. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides an auxiliary steel feeding device for hot-rolled spherical flat steel upper rolling line. By rolling contact with the hot-rolled workpiece, it assists in steel feeding, avoids scratching the hot-rolled workpiece, and can be used in products within a certain specification range. It optimizes the steel feeding stability of the upper rolling line pass and improves the running condition of the rolled workpiece.

[0004] The technical solution adopted in this invention is as follows: The present invention proposes an auxiliary steel feeding device for hot-rolled spherical flat steel rolling line, comprising a positioning plate, limiting bosses, guide rollers, bolts and nuts; the limiting bosses are symmetrically fixed to the left and right ends of the top of the positioning plate; the bolts are disposed between the limiting bosses at both ends, and both ends are locked to the outer end face of the limiting bosses by nuts; the guide rollers are disposed between the limiting bosses at both ends and are rotatably connected to the bolts.

[0005] Furthermore, a guide plate is vertically arranged on one side of the top of the positioning plate; the two ends of the inner side of the guide plate are respectively fixedly connected to the limiting boss, and a gap is provided between the inner side of the guide plate and the outer peripheral surface of the guide roller.

[0006] Furthermore, the bottom surface of the guide plate is perpendicular to the positioning plate, and the top surface is set as an inclined surface.

[0007] Furthermore, the bolt is an M16 bolt; the nut is an M16 nut.

[0008] Compared with the prior art, the present invention has the following beneficial effects: 1. It can be used in products within a certain specification range, and has a wide range of applications; 2. It can more accurately guide the bite of the rolled piece, reducing the occurrence of steel jacking accidents; 3. The use of rolling guide rollers to directly contact and rub against the hot-rolled workpiece reduces scratches on the workpiece, makes replacement very convenient, and reduces maintenance costs. 4. The workpiece bite is smooth and stable, the product quality is significantly improved, the failure rate can be effectively reduced and the production efficiency can be increased. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the test structure of this utility model.

[0010] In the attached drawings, the following symbols are used: 1-guide roller; 2-positioning plate; 3-bolt; 4-nut; 5-limiting boss; 6-guide plate. Detailed Implementation

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] It should be noted that in the description of this utility model, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0013] See appendix Figures 1-2 The present invention proposes an auxiliary steel feeding device for hot-rolled spherical flat steel rolling line, comprising a guide roller 1, a positioning plate 2, a bolt 3, a nut 4, and a limiting boss 5.

[0014] The positioning plate 2 is a rectangular plate; the limiting bosses 5 are symmetrically fixed to the left and right ends of the top of the positioning plate 2; the bolts 3 are set between the two limiting bosses 5 and extend outward a certain distance through the limiting bosses 5 at both ends; the two ends of the bolts 4 are respectively locked and fixed to the outer end face of the two limiting bosses 5 by nuts 4; the guide rollers 1 are set between the two limiting bosses 5 and are coaxially rotatably connected to the bolts 3.

[0015] Among them, bolt 3 is an M16 bolt; nut 4 is an M16 nut.

[0016] In this embodiment, a guide plate 6 is vertically arranged on one side of the top of the positioning plate 2; the two ends of the inner side of the guide plate 6 are respectively fixedly connected to the two end limiting bosses 5, and a gap is provided between the inner side of the guide plate 6 and the outer peripheral surface of the guide roller 1, so as not to affect the rotation of the guide roller 1.

[0017] The bottom surface of the guide plate 6 is perpendicular to the positioning plate 2, and the top surface is set as an inclined surface.

[0018] When in use, the positioning plate 2 is vertically installed and embedded in the gap of the floor cover on the swing table at the entrance of the rolling mill. The limiting boss 5 is stuck at the top of the gap, and the bottom surface of the guide plate 6 is parallel and attached to the floor cover on the swing table.

[0019] In the original rolling process, when the workpiece is obliquely biting into the upper rolling pass along the swing table, the upward tilt of the workpiece end and the height difference between the extreme position of the swing table and the upper rolling pass prevent the workpiece from being smoothly bitten into the pass, resulting in workpiece misalignment and damage to the guide plate and crossbeam. Manual assistance is required to repeatedly adjust the workpiece position to aid biting, which easily causes scratches on the workpiece during the adjustment process. This seriously affects production rhythm and rolling quality. After installing this device, when the workpiece passes obliquely upward along the swing table, the height of the workpiece can be adjusted to a certain extent, achieving correct biting into the pass without human intervention. Furthermore, the contact between the guide rollers and the workpiece in this device is rolling friction, which reduces scratch defects during biting.

[0020] When the guide roller 1, which is in direct contact with the workpiece, is severely worn, it can be easily replaced. Because the positioning plate 2 uses a plug-in positioning method, replacement is very convenient, taking no more than 5 minutes and having almost no impact on production efficiency. Furthermore, the guide roller 1 is small in size, lightweight, and low in cost, significantly reducing maintenance costs. When the guide roller 1 becomes severely worn and needs replacement after a period of production, a spare guide roller is prepared. During a production break, the nut 4 is loosened, the bolt is pulled out, and the spare guide roller is reinstalled, allowing production to resume immediately. The replaced guide roller can be repaired and reused based on its wear condition, further reducing production costs. With the assistance of this device, the workpiece can accurately and smoothly enter the upper rolling line pass, effectively reducing the risk of top-rolling accidents.

[0021] Matters not covered in this utility model are common knowledge.

[0022] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for assisting the feeding of a hot-rolled flat steel into a rolling line, characterized in that it comprises: The device includes a positioning plate, limiting bosses, guide rollers, bolts, and nuts; the limiting bosses are symmetrically fixed to the left and right ends of the top of the positioning plate; the bolts are arranged between the two limiting bosses and are locked to the outer end faces of the limiting bosses by nuts at both ends; the guide rollers are arranged between the two limiting bosses and are rotatably connected to the bolts.

2. The auxiliary steel feeding device for hot-rolled spherical flat steel rolling line as described in claim 1, characterized in that: A guide plate is vertically arranged on one side of the top of the positioning plate; the two ends of the inner side of the guide plate are respectively fixed to the limiting boss, and a gap is provided between the inner side of the guide plate and the outer peripheral surface of the guide roller.

3. The auxiliary steel feeding device for the upper rolling line of the hot-rolled flat-knuckle steel according to claim 2, characterized in that: The bottom surface of the guide plate is perpendicular to the positioning plate, and the top surface is set as an inclined surface.

4. The auxiliary steel feeding device for the upper rolling line of the hot-rolled flat-knuckle steel according to claim 1, characterized in that: The bolt is an M16 bolt; the nut is an M16 nut.

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