A mill guard installation height measuring device
By designing a device for measuring the installation height of the mill guard plate, and using a combination of a straightedge, leveling bolts, and a spirit level, the device enables precise measurement of the installation height and levelness of the guard plate, solving the problem of low installation accuracy and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANDAN IRON & STEEL GROUP CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, the lack of precise quantitative measurement during the installation of mill guard plates leads to low installation accuracy, frequent adjustments, and impacts production rhythm and product quality.
Design a device for measuring the installation height of a rolling mill guard plate, comprising a straightedge, leveling bolts, a leveling bead, and a measuring ruler. The straightedge is leveled by calibrating it with the leveling bead, and the height and levelness of the guard plate relative to the rolling mill roll are measured by combining the scale lines.
It enables precise measurement of the installation height and level of the rolling mill guard plate, reducing defects and scrap caused by guard plate installation deviations, and improving production efficiency and product quality.
Smart Images

Figure CN224586624U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a device for measuring the installation height of a rolling mill guard plate, belonging to the field of steel rolling technology in the metallurgical industry. Background Technology
[0002] During the rolling process of structural steel, uneven deformation of the rolled piece can cause it to bend after exiting the mill. Guard plates are typically installed at the mill exit to guide the rolled piece. Installing the guard plates too high, too low, or at an angle can lead to quality problems such as scratches and flatness issues, and in severe cases, can cause serious accidents like roll entanglement or steel slippage. Currently, the installation height of guard plates is generally adjusted visually, resulting in low installation accuracy and frequent adjustments after the guard plates are in place, severely impacting production rhythm and product quality. Therefore, accurate quantitative measurement of the installation height and levelness of the guard plates is essential. Utility Model Content
[0003] The purpose of this invention is to provide a rolling mill guard plate installation height measuring device, which can accurately measure the installation height and levelness of the rolling mill guard plate, reduce defects and scrap caused by guard plate installation deviations, and solve the problems existing in the background art.
[0004] The technical solution of this utility model is:
[0005] A device for measuring the installation height of a rolling mill guard plate includes a straightedge, a leveling bolt, a level bead, a measuring ruler, and screws. The straightedge is located above the guard plate, with one end engaging with the rolling roll and the other end engaging with the guard plate via the leveling bolt. A rectangular groove is formed in the center of the upper surface of the straightedge, and the level bead is embedded in the rectangular groove. There are two identical measuring rulers with graduation lines on both sides, and the two measuring rulers are fixed to the straightedge by screws.
[0006] The lower surface of the ruler is flat.
[0007] The lower surface of the straightedge is attached to the highest point of the upper surface of the roll.
[0008] The two measuring rulers are located on either side of the level bead.
[0009] The end of the straightedge has a threaded through hole that mates with the leveling bolt along the vertical direction, and the side of the straightedge has two sets of threaded holes that mate with the screws, two in each set.
[0010] The measuring ruler has a rectangular hole that mates with a screw.
[0011] The beneficial effects of this utility model are: the utility model has a simple structure and is easy to operate, and can accurately measure the installation height and level of the rolling mill guard plate, reducing defects and scrap caused by guard plate installation deviations. Attached Figure Description
[0012] Figure 1 This is a schematic diagram illustrating the use of this utility model;
[0013] Figure 2 This is the front view of the straightedge of this utility model;
[0014] Figure 3 This is a top view of the straightedge of this utility model;
[0015] Figure 4 This is the front view of the measuring ruler of this utility model;
[0016] Figure 5 This is a front view of the screw of this utility model;
[0017] Figure 6 This is a schematic diagram of the leveling bead of this utility model;
[0018] In the diagram: 1—flat ruler, 2—leveling bolt, 3—level bead, 4—measuring ruler, 5—screw, 6—rectangular groove, 7—threaded through hole, 8—threaded hole, 9—rectangular hole, 10—scale line, 11—roll, 12—guard plate. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and examples.
[0020] See attached document Figure 1-6 A device for measuring the installation height of a rolling mill guard plate includes a straight ruler 1, a leveling bolt 2, a level bead 3, a measuring ruler 4, and screws 5. The straight ruler 1 is located above the guard plate 12. One end of the straight ruler 1 is engaged with the rolling roll 11, and the other end of the straight ruler 1 is engaged with the guard plate 12 through the leveling bolt 2. A rectangular groove 6 is opened in the middle of the upper surface of the straight ruler 1, and the level bead 3 is embedded in the rectangular groove 6. There are two identical measuring rulers 4, each with scale lines 10 on both sides. The two measuring rulers 4 are fixed to the straight ruler 1 by screws 5.
[0021] In this embodiment, Figure 2 , 3 As shown in Figure 6, the measuring device comprises two parts: a reference ruler and a measuring ruler. The reference ruler consists of a straight ruler 1, a leveling bead 3, a leveling bolt 2, and a screw 5. The lower surface of the straight ruler 1 is flat, and a rectangular groove 6 is formed in the center of the upper surface, into which the leveling bead 3 is embedded. When the straight ruler 1 is placed horizontally, the bubble in the leveling bead 3 is centered. One end of the straight ruler 1 has a threaded through hole 7 in the vertical direction. The leveling bolt 2 engages with the threaded through hole 7 at the end of the straight ruler 1, allowing it to be screwed in and out vertically. The side of the straight ruler 1 has two sets of threaded holes 8, two in each set, located near both ends of the straight ruler 1. The screw 5 engages with the threaded holes 8, and after the screw 5 is tightened, there is a certain gap between the screw cap and the straight ruler.
[0022] Figure 4 , 5The display shows that there are two identical measuring rulers 4, with scale lines 10 on both sides, the starting scale at the end is "0", and a rectangular hole 9 in the center. They are installed on the threaded hole 8 on the side of the straight ruler by screws 5 and can move freely up and down along the rectangular hole 9. The distance between the two measuring rulers is d.
[0023] according to Figure 1 The instructions state that during use, the lower surface of end A of the straightedge 1 should be placed against the highest point of the upper surface of the roll 11, and end B of the straightedge 1 should be close to the end of the guard plate 12. Adjust the leveling bolt 2 to center the bubble in the leveling bead 3, and keep the reference ruler 1 horizontal. The distances D1 and D2 between the guard plate and the lower surface of the straightedge 1 are measured using two measuring rulers 4, which represent the height difference between the guard plate and the roll surface. (D1-D2) / d represents the levelness of the guard plate.
Claims
1. A gauge for measuring the height of a mill guard, characterised in that: It includes a straightedge (1), a leveling bolt (2), a level bead (3), a measuring ruler (4), and screws (5). The straightedge (1) is located above the guard plate (12). One end of the straightedge (1) is engaged with the roller (11), and the other end of the straightedge (1) is engaged with the guard plate (12) through the leveling bolt (2). A rectangular groove (6) is opened in the middle of the upper surface of the straightedge (1), and the level bead (3) is embedded in the rectangular groove (6). There are two identical measuring rulers (4), with scale lines (10) on both sides. The two measuring rulers (4) are fixed on the straightedge (1) by screws (5).
2. A gauge for measuring the height of a guard plate of a rolling mill as claimed in claim 1, characterized in that: The lower surface of the straightedge (1) is a plane.
3. A gauge for measuring the height of a mill guard according to claim 2, characterised in that: The lower surface of the straightedge (1) is attached to the highest point of the upper surface of the roll (11).
4. A gauge for measuring the height of a mill guard according to claim 1, wherein: The two measuring rulers (4) are located on both sides of the level bead (3).
5. A gauge for measuring the height of a guard plate of a rolling mill according to claim 1 or 4, characterized in that: The end of the straightedge (1) is provided with a threaded through hole (7) that mates with the leveling bolt (2) in the vertical direction. The side of the straightedge (1) is provided with two sets of threaded holes (8) that mate with the screw (5), two in each set.
6. A gauge for measuring the height of a mill guard according to claim 1, wherein: The measuring ruler (4) is provided with a rectangular hole (9) that mates with a screw (5).