A steel passage channel for bar mills

Abstract

This utility model discloses a steel passage trough for a bar mill, relating to the field of steel rolling equipment technology. To address the problems of poor guidance, easy deviation of rolled pieces, low structural stability, and easy loosening and deformation under high-speed impact in existing steel passage troughs for intermediate rolling mills, the following technical solution is proposed: It includes a guide trough, a guide plate, a column, a base plate, and a base. The guide plate is connected to the inlet end of the guide trough. The upper end of the column is connected to the guide trough, and the lower end is connected to the base plate. A boss is provided on the base, and a through hole corresponding to the boss is opened on the base plate. The base plate is fitted onto the boss through the through hole and fixed to the base with bolts. A pin is also included, inserted into the boss to fix the base plate to the base. This utility model, through the combination of an inclined guide plate and a narrowed guide trough, provides guidance and effectively prevents the rolled piece from deviating.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling equipment technology, specifically to a steel passage trough used in bar mills. Background Technology

[0002] In actual production, the existing open-type troughs used in intermediate rolling mills often have relatively simple guiding structures, such as a U-shaped or rectangular channel of uniform width. However, when bars are rolled in the intermediate rolling mill, the speed is relatively high, and the cross-sectional dimensions are smaller than those in the roughing mill. When the rolled piece head leaves the previous stand, it is prone to sag due to gravity or vibration during high-speed movement. This simple straight channel cannot effectively receive, straighten, and center the sag or wobble of the rolled piece head. As a result, when the rolled piece head enters the trough, it is very easy to impact the entrance end or sidewall of the trough. This not only aggravates the wear of the trough, but more seriously, it can cause the rolled piece to deviate from the rolling centerline, leading to difficulties in biting, jamming, or even steel piling accidents when entering the next stand, seriously affecting the smooth operation and safety of production.

[0003] Meanwhile, as the rolled stock passes through the steel trough at high speed in the intermediate rolling mill, it generates continuous high-frequency vibrations and impacts on the trough. Existing support and fixing structures for the steel troughs are often inadequate to handle these conditions. For example, some steel troughs have flimsy column structures or are only fixed to the foundation using conventional anchor bolts. Under such continuous impact and vibration loads, on the one hand, the fixing bolts are prone to loosening, causing overall displacement of the steel trough; on the other hand, the supporting columns are also prone to fatigue deformation. Both of these situations lead to a significant decrease in the structural stability of the steel trough, compromising the alignment accuracy of the rolling line and forcing frequent production line shutdowns for maintenance, resetting, and calibration. This not only increases maintenance workload and spare parts costs but also reduces operating rates and production efficiency.

[0004] Therefore, existing steel passage channels used in bar mills generally suffer from poor guiding effect, easy deviation of rolled pieces, low structural stability, inability to withstand high-speed impact, and easy deformation or loosening. There is an urgent need for a solution with a better structure. Utility Model Content

[0005] The purpose of this invention is to provide a steel passage trough for bar mills to solve the problems of insufficient guiding effect, easy deviation of rolled pieces from the rolling line, and low structural stability in the prior art.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A steel passage trough for a bar mill includes a guide trough, a guide plate, a column, a base plate, and a base; the guide plate is connected to the inlet end of the guide trough. The upper end of the column is connected to the guide groove, and the lower end is connected to the base plate; the base is provided with a boss, and the base plate is provided with a through hole corresponding to the boss. The base plate is fitted onto the boss through the through hole and fixed to the base with bolts. It also includes a pin, which is inserted into the boss to fix the base plate to the base.

[0007] Furthermore, the width of the guide groove gradually narrows along the direction of movement of the rolled piece.

[0008] Furthermore, the guide plate is inclined downwards towards the guide groove.

[0009] Furthermore, the columns are H-shaped steel structures.

[0010] Furthermore, lifting lugs are welded onto both sides of the guide channel.

[0011] Furthermore, the column includes a first column and a second column; the first column is located at the front end of the guide groove, and the second column is located at the rear end of the guide groove.

[0012] Furthermore, it also includes a gasket, which is placed between the bolt and the base plate.

[0013] This invention offers the following advantages: By incorporating a downward-sloping guide plate and a gradually narrowing guide groove, it effectively supports and straightens the head of the rolled piece, solving the problems of piece deviation and steel jamming caused by poor guidance. Furthermore, the use of H-shaped steel columns provides high-strength support, and a composite fixing structure of "boss + pin + bolt" effectively resists the high-speed impact and vibration of the rolled piece, solving the stability problems of easy loosening and deformation of the steel channel in the prior art. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an embodiment of a steel passageway used in a bar mill. Figure 2 A top view of an embodiment of a steel passageway used in a bar mill; Figure 3 This is a side view of an embodiment of a steel trough used in a bar mill.

[0015] Figures 1 to 3 The reference numerals in the attached drawings are respectively: 1-guide plate, 2-guide groove, 3-lifting lug, 4-bolt, 5-washer, 6-bore, 7-pin, 8-column, 9-base plate, 10-base. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Please refer to Figure 1-3 A steel passage channel for a bar mill includes a guide channel 2, a guide plate 1, a column 8, a base plate 9, and a base 10.

[0018] The guide plate 1 is connected to the inlet end of the guide groove 2, i.e., the inlet end of the rolled product. The upper end of the column 8 is connected to the bottom of the guide groove 2, and its lower end is connected to the upper surface of the base plate 9. The base plate 9 is mounted on the base 10.

[0019] A boss 6 is integrally formed or fixedly provided on the base 10. A through hole corresponding to the shape and size of the boss 6 is provided on the base plate 9. During installation, the base plate 9 is fitted onto the boss 6 through the through hole; this mating structure provides precise radial positioning. After the base plate 9 is fitted onto the base 10, several bolts 4 are passed through bolt holes on the base plate 9 and screwed into the base 10 to achieve axial locking and fixation.

[0020] It also includes a pin 7, which is inserted into the boss 6 and passes through both the base plate 9 and the boss 6, thereby firmly connecting and fixing the base plate 9 to the base 10. This composite fixing structure, consisting of the boss 6, the pin 7, and the bolt 4, can effectively resist the shearing impact and vibration brought about by the high-speed passage of the rolled piece, prevent displacement or loosening of the steel channel, and greatly improve the service life of the bolt 4 and the stability of the overall device.

[0021] To further optimize the structure and function of this embodiment: The width of the guide groove 2 gradually narrows along the direction of the rolled piece's movement, i.e., the direction of steel passage. The guide plate 1 is inclined downwards at a certain angle towards the guide groove 2. The above two features provide excellent guiding effect for this device.

[0022] To provide stable support, the number of columns 8 is preferably two, including a first column and a second column. The first column is located at the front end of the guide channel 2, and the second column is located at the rear end of the guide channel 2, jointly supporting the guide channel 2 and the base plate 9. To further enhance the support strength, the columns 8 are preferably of H-beam steel structure. H-beam steel has excellent bending resistance and load-bearing capacity, is not easily deformed, and can effectively improve the structural stability of the overall device.

[0023] To facilitate the overall hoisting of this device during installation, inspection, or maintenance, lifting lugs 3 are welded onto both sides of the guide channel 2.

[0024] A washer 5 is also provided between the bolt 4 and the base plate 9. The washer 5 is placed between the head of the bolt 4 and the upper surface of the base plate 9 to increase the contact area and prevent the bolt 4 from loosening.

[0025] In this embodiment, the guide plate 1 and the guide groove 2, the column 8 and the guide groove 2, and the column 8 and the base plate 9 are preferably connected by welding to form a high-strength rigid whole. To ensure durability, the components of the steel channel in this embodiment, such as the guide plate 1, the guide groove 2, and the column 8, are preferably made of steel to ensure good wear resistance and a long service life.

[0026] The working process of this utility model is as follows: When the workpiece exits the previous stand, its head naturally bends downwards under gravity. When the workpiece head reaches the guide plate 1 of this invention, because the guide plate 1 is inclined downwards, it can smoothly support the workpiece head and gradually straighten it to a normal horizontal height using its slope. Subsequently, the workpiece enters the guide groove 2. Since the width of the guide groove 2 gradually narrows along the direction of workpiece movement, it provides secondary centering and limiting constraints to the straightened workpiece, maintaining its stable direction of movement and ensuring that the workpiece can accurately enter the next stand along the rolling centerline.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel passage trough for a bar mill, characterized in that, It includes a guide groove (2), a guide plate (1), a column (8), a base plate (9), and a base (10); the guide plate (1) is connected to the inlet end of the guide groove (2); The upper end of the column (8) is connected to the guide groove (2), and the lower end is connected to the base plate (9); the base (10) is provided with a boss (6), and the base plate (9) is provided with a through hole corresponding to the boss (6). The base plate (9) is sleeved on the boss (6) through the through hole and fixed to the base (10) by bolts (4); It also includes a pin (7), which is inserted into the boss (6) to fix the base plate (9) and the base (10).

2. The steel passage trough for bar mills according to claim 1, characterized in that, The width of the guide groove (2) gradually narrows along the direction of movement of the rolled piece.

3. The steel passage trough for bar mills according to claim 1, characterized in that, The guide plate (1) is inclined downward toward the guide groove (2).

4. The steel passage trough for bar mills according to claim 1, characterized in that, The column (8) is an H-shaped steel structure.

5. The steel passage trough for bar mills according to claim 4, characterized in that, Lifting lugs (3) are also welded to the two side walls of the guide groove (2).

6. The steel passage trough for bar mills according to claim 1, characterized in that, The column (8) includes a first column and a second column; the first column is disposed at the front end of the guide groove (2), and the second column is disposed at the rear end of the guide groove (2).

7. The steel passage trough for bar mills according to claim 1, characterized in that, It also includes a gasket (5) disposed between the bolt (4) and the base plate (9).

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