Guide and guard device for hot mill

Abstract

The utility model discloses a guide and guard device for a hot rolling mill, which relates to the field of guide and guard structures of hot rolling mills and comprises a conveying frame, and two guide and guard mounting frames are symmetrically mounted above the conveying frame. A plurality of guide plates are mounted on the sides, close to each other, of the two guide mounting frames from top to bottom in a stacked and spliced mode. According to the guide and guard device for the hot rolling mill, a traditional integral guide and guard plate is split into multiple layers of guide and guard plate structures which are overlapped from top to bottom, and the multiple layers of guide and guard plate structures abut against and are overlapped on the guide and guard mounting frame through the limiting structures, so that the positions of the multiple layers of guide and guard plates can be mutually exchanged; and it is guaranteed that the guide and guard plates at all positions can be regularly adjusted to the lowermost easy-to-wear layer face to work, so that the abrasion loss of the multi-layer guide and guard plate structure is uniform and consistent, and the service life of the guide and guard plate structure is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hot press guide structures, and more particularly to a guide device for hot rolling mills. Background Technology

[0002] The guide structure of the hot rolling mill is an indispensable key component in the section steel rolling process. It is mainly responsible for accurately guiding the rolled piece into the roll pass, ensuring that the rolled piece deforms stably and continuously within the pass, and at the same time plays a role in supporting, guiding and correcting the running direction of the rolled piece.

[0003] As the steel profiles continuously enter, they rub against the sides of the guide plate, especially at the bottom. With increased use, the bottom of the guide plate experiences significant friction. Directly replacing the guide plate results in substantial material waste. A current guide structure rotates the guide plate 180 degrees, changing its position. This method replaces the unworn areas with the more worn areas, increasing the guide plate's lifespan. However, the working surface of the guide plate eventually becomes uneven, with recessed sides and a protruding center. This means there is still room for improvement in the guide plate's lifespan. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a guide device for hot rolling mills. By splitting the guide plate into a multi-layered structure with upper and lower parts spliced ​​together, the positions of the multi-layered guide plates can be interchanged, thereby ensuring uniform wear at all positions of the guide plate and extending the service life of the guide plate.

[0005] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0006] A guide device for a hot rolling mill, a conveyor frame, wherein two guide mounting frames are symmetrically installed on the top of the conveyor frame, and a plurality of guide plates are stacked and spliced ​​from top to bottom on the side of the two guide mounting frames that are close to each other, and a limiting component is installed on the top surface of the guide mounting frame to limit the guide plates on the guide mounting frame.

[0007] Preferably, each guide mounting bracket has three guide plates.

[0008] Preferably, the guide plate has symmetrically fixed sliding strips on the side near the guide mounting frame, and the two guide mounting frames have longitudinally arranged sliding grooves on the side close to each other. The two sliding strips on each guide plate are respectively slidably inserted into the two sliding grooves on the corresponding guide mounting frame.

[0009] Preferably, the bottom surface of the slider has a chamfer.

[0010] Preferably, the limiting component includes a V-shaped strip rotatably connected to the top surface of the guide mounting frame near the guide plate via a pivot pin. The long side of the V-shaped strip abuts against the top surface of the uppermost guide plate. A connecting block is rotatably connected to the corner of the V-shaped strip via a pivot pin. A threaded sleeve is rotatably connected to the top surface of the guide mounting frame opposite the V-shaped strip via a pivot pin. A screw is threadedly connected to the threaded sleeve. A handwheel is fixed to the end of the screw. The end of the screw near the V-shaped strip is rotatably connected to the outer wall of the connecting block via a bearing.

[0011] Preferably, several limiting components are arranged side by side along the length of each guide mounting frame.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] This invention breaks down the traditional monolithic guide plate into a multi-layered guide plate structure stacked from top to bottom. A limiting structure is used to press the multi-layered guide plate structure tightly against the guide plate mounting frame, allowing the positions of the multi-layered guide plates to be interchanged. This ensures that each guide plate can be periodically adjusted to the bottom layer, which is the most wear-prone layer, for operation. As a result, the wear of the multi-layered guide plate structure is uniform and consistent, greatly improving the service life of the guide plate structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 For the present utility model Figure 1 Enlarged view of point A.

[0016] Figure 3 This is a schematic diagram of the slide groove structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the slider structure of this utility model.

[0018] Figure 5 This is a schematic diagram showing the state in which the V-shaped strip of this utility model is not pressed tightly against the guide plate.

[0019] Reference numerals: 1. Conveyor frame; 2. Guide mounting frame; 3. Connecting rod; 4. Tilting drive bar; 5. Guide plate; 6. Sliding bar; 7. Slide groove; 8. V-shaped bar; 801. Short side; 802. Long side; 9. Connecting block; 10. Threaded sleeve; 11. Screw; 12. Handwheel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1 to 5 This embodiment provides a guide device for a hot rolling mill. A conveyor frame 1 has two guide mounting frames 2 symmetrically mounted on its upper side. The two guide mounting frames 2 are distributed on opposite sides of the conveyor frame 1 along its conveying direction. Each of the two guide mounting frames 2 has two connecting rods 3 symmetrically rotatably connected to its opposite side via a pivot pin. The two connecting rods 3 are arranged in parallel. The end of the connecting rod 3 furthest from the guide mounting frame 2 is rotatably connected to the conveyor frame 1 via a pivot pin. A flipping drive bar 4 is fixed to the lower end of one of the connecting rods 3. During operation, an electric push rod or cylinder is connected between the flipping drive bar 4 and the conveyor frame 1 to push the flipping drive bar 4 to rotate, thereby causing the connecting rod 3 to rotate. This allows the two guide mounting frames 2 to approach each other for centered guidance of the hot-rolled workpiece.

[0022] Three guide plates 5 are stacked and spliced ​​from top to bottom on the side of the two guide mounting frames 2 that are close to each other. Slide strips 6 are symmetrically fixed on the side of the guide plate 5 that is close to the guide mounting frame 2. The bottom surface of the slide strips 6 is chamfered. The two guide mounting frames 2 that are close to each other are provided with longitudinally arranged slide grooves 7. The two slide strips 6 on each guide plate 5 are slidably inserted into the two slide grooves 7 on the corresponding guide mounting frame 2.

[0023] By disassembling the traditionally integral guide plate 5 into a multi-layered guide plate 5 structure, the positions of the multi-layered guide plates 5 can be interchanged, ensuring that each guide plate 5 can be periodically adjusted to the bottom layer, which is prone to wear, so that the wear of the multi-layered guide plate 5 structure is uniform and consistent, greatly improving the service life of the guide plate 5 structure.

[0024] Three V-shaped bars 8 are rotatably connected to the top surface of the guide mounting frame 2 near the guide plate 5 via a shaft pin. The V-shaped bars 8 have a long side 802 and a short side 801. The short side 801 is connected to the guide mounting frame 2. The three V-shaped bars 8 are arranged side by side along the length of the guide mounting frame 2. The long side 802 of the V-shaped bars 8 abuts against the top surface of the uppermost guide plate 5. A connecting block 9 is rotatably connected to the corner of the V-shaped bars 8 via a shaft pin. A threaded sleeve 10 is rotatably connected to the top surface of the guide mounting frame 2 directly opposite the V-shaped bars 8 via a shaft pin. A screw 11 is internally threaded into the threaded sleeve 10. A handwheel 12 is fixed to the end of the screw 11. The end of the screw 11 near the V-shaped bars 8 is rotatably connected to the outer wall of the connecting block 9 via a bearing.

[0025] When installing the guide plate 5, insert the slide bar 6 on it into the slide groove 7 and insert it to the bottom. Then insert the two upper guide plates 5 until the three guide plates 5 are inserted and installed. Then turn the handwheel 12 at the end of the screw 11 to drive the screw 11 to rotate, so that the screw 11 pushes the V-shaped bar 8 to flip, so that the long side of the V-shaped bar 8 abuts against the top of the uppermost guide plate 5, pressing the guide plate 5 tightly. Operate multiple handwheels 12 in sequence, so that the guide plates 5 are pressed against multiple positions on the top surface of the uppermost guide plate 5, so that the three guide plates 5 are stacked tightly.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A guide device for a hot rolling mill, a conveyor frame (1), characterized in that, Two guide mounting frames (2) are symmetrically installed above the conveyor frame (1). Several guide plates (5) are stacked and spliced ​​from top to bottom on the side of the two guide mounting frames (2) that are close to each other. A limiting component is installed on the top surface of the guide mounting frame (2) to limit the guide plates (5) on the guide mounting frame (2).

2. The guide device for a hot rolling mill according to claim 1, characterized in that, The number of guide plates (5) on each of the guide mounting brackets (2) is three.

3. The guide device for a hot rolling mill according to claim 1, characterized in that, The guide plate (5) has symmetrically fixed sliding strips (6) on one side near the guide mounting frame (2). The two guide mounting frames (2) are provided with longitudinally arranged sliding grooves (7) on the side that is close to each other. The two sliding strips (6) on each guide plate (5) are respectively slidably inserted into the two sliding grooves (7) on the corresponding guide mounting frame (2).

4. The guide device for a hot rolling mill according to claim 3, characterized in that, The bottom surface of the slider (6) is chamfered.

5. The guide device for a hot rolling mill according to claim 3, characterized in that, The limiting component includes a V-shaped strip (8) rotatably connected to the top surface of the guide mounting frame (2) near the guide plate (5) via a shaft pin. The long side (802) of the V-shaped strip (8) abuts against the top surface of the uppermost guide plate (5). A connecting block (9) is rotatably connected to the corner of the V-shaped strip (8) via a shaft pin. A threaded sleeve (10) is rotatably connected to the top surface of the guide mounting frame (2) directly opposite the V-shaped strip (8) via a shaft pin. A screw (11) is threadedly connected to the threaded sleeve (10). A handwheel (12) is fixed to the end of the screw (11). The end of the screw (11) near the V-shaped strip (8) is rotatably connected to the outer wall of the connecting block (9) via a bearing.

6. The guide device for a hot rolling mill according to claim 5, characterized in that, Each guide mounting frame (2) has several limiting components arranged side by side along the length of the guide mounting frame (2).

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