Guide groove device used after bar rolling and double-length shearing

Abstract

The utility model discloses a guide groove device after bar rolling double-length shears, which comprises an upper cover plate, a lower bottom plate and two side plates, the upper cover plate is obliquely arranged downwards along the conveying direction of a rolled piece, the inclination angle A is 3-5 degrees, the lower bottom plate comprises a surface plate and an inclined plate, the inclined plate and the surface plate are sequentially arranged along the conveying direction of the rolled piece, and the inclined plate and the surface plate are arranged in the conveying direction of the rolled piece. The inclined plate is obliquely arranged upwards in the rolled piece conveying direction, the inclination angle B ranges from 5 degrees to 7 degrees, and the surface plate is horizontally arranged; the two side plates are vertically welded to the two sides of the lower bottom plate, the ends, close to a rolled piece inlet, of the two side plates are horn mouths opening towards the front side and the rear side, the included angle C between the ends, close to the rolled piece inlet, of the two side plates ranges from 10 degrees to 12 degrees, and the upper cover plate is detachably connected with the two side plates. According to the guide groove device, the length of a suspended section of a rolled piece when the rolled piece runs at the position of the double-length shear can be shortened to the maximum extent, and the double-length shear stability is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel rolling, and more specifically to a guide groove device for bars after they are rolled and sheared to multiple lengths. Background Art

[0002] like Figure 1 As shown, in the ordinary bar production line, a multiple-length shear 2 is provided between the finishing mill 1 and the cooling bed input roller 4, and its main function is to shear the rolled piece into a multiple-length finished product, and then cooperate with the cooling bed input roller 4 and the skirt plate type cooling bed steel loading system to finally smoothly input the finished multiple-length rolled piece into the step-type cooling bed 5. A multiple-length shearing post-guide groove 3 is provided between the multiple-length shear 2 and the cooling bed input roller 4.

[0003] The existing guide groove has a structure such as Figure 2 As shown, there are mainly the following defects:

[0004] 1. The lower bottom plate 6 and the upper cover plate 7 at the entrance end lack the concave platform that cooperates with the shear blade, and the inclination angle is large, with the inclination angle a being about 10°. When the rolled piece is running at the double-length shear, there is a serious drooping phenomenon, that is, the actual running track of the rolled piece here is lower than the rolling line. During the double-length shearing process, the lower shear blade contacts the rolled piece first, resulting in abnormal conditions such as shear tail swing and shaking, which in turn causes production accidents.

[0005] 2. The upper cover plate 7 is welded to the guide groove body and is a fixed structure. When the upper cover plate needs to be opened to handle an accident, it is relatively difficult.

[0006] Therefore, it is urgent to design a guide groove device for bars after rolling and shearing to solve the above-mentioned technical problems. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a guide groove device after bar rolling and multiple-length shearing in view of the above-mentioned deficiencies in the prior art, which can shorten the length of the suspended section of the rolled piece when it runs at the multiple-length shearing position to the maximum extent and further improve the multiple-length shearing stability.

[0008] The technical scheme of the utility model is as follows: a guide groove device after bar rolling multiple-length shearing, comprising an upper cover plate, a lower bottom plate and two side plates, the two side plates connect the upper cover plate and the two sides of the lower bottom plate to form a box-shaped guide groove, the upper cover plate is arranged downwardly along the conveying direction of the rolled piece, and the inclination angle A is 3° to 5°, the lower bottom plate comprises a plane plate and an inclined plate, the inclined plate and the plane plate are arranged in sequence along the conveying direction of the rolled piece, and the plane plate and the inclined plate are an integrated structure, the inclined plate is arranged upwardly along the conveying direction of the rolled piece, and the inclination angle B is 5° to 7°, and the plane plate is arranged horizontally; the two side plates are vertically welded to the two sides of the lower bottom plate, and the ends of the two side plates close to the inlet of the rolled piece are bell mouths opened to the front and rear sides, the angle C of the two side plates close to the inlet of the rolled piece is 10° to 12°, the upper cover plate and the two side plates are detachably connected; grooves are provided on the upper cover plate and the lower bottom plate at positions corresponding to the positions of the multiple-length shear blades.

[0009] As a further improvement, the inclination angle A of the upper cover plate is 3°, the inclination angle B of the inclined plate is 7°, and the included angle C of the two side plates near the end of the rolled piece inlet is 12°.

[0010] Furthermore, the thickness of the lower base plate is greater than the thickness of the upper cover plate and the side plates.

[0011] Furthermore, the lower base plate is a Q345 steel plate with a thickness of 20-30 mm, and the upper cover plate and the side plates are both Q235 steel plates with a thickness of 12-14 mm.

[0012] Furthermore, the upper cover plate is connected to the side plates by screws.

[0013] Furthermore, the lower bottom plate is provided with at least two brackets, and the brackets are installed on the base beam of the cooling bed input roller.

[0014] Furthermore, the bracket is connected to the base beam via fastening bolts, and gaskets are sleeved on the fastening bolts between the bracket and the base beam.

[0015] Beneficial Effects

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The guide groove device of the utility model can ensure that the running trajectory of each specification of rolled pieces completely coincides with the rolling line elevation by changing the inclination angle of the lower bottom plate and the upper cover plate at the entrance end of the guide groove, and can also minimize the length of the suspended section of the rolled pieces when running at the double-length shear, thereby further improving the double-length shearing stability.

[0018] 2. The guide groove device of the utility model can maximize the distance between the guide groove and the multiple-length shear by arranging grooves at the entrance ends of the lower bottom plate and the upper cover plate, further ensuring that the running trajectory of each specification of rolled piece completely coincides with the elevation of the rolling line.

[0019] 3. The guide groove device of the utility model has a detachable connection between the upper cover plate and the side plate, so that the upper cover plate can be opened at any time, which is convenient for disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the process of a bar production line in the prior art;

[0021] Figure 2 It is a structural schematic diagram of a guide groove in the prior art;

[0022] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the top cross-sectional structure of the utility model.

[0024] Among them: 1-finishing rolling unit, 2-multiple-size shear, 3-guide groove after multiple-size shear, 4-cooling bed input roller, 5-cooling bed, 6-lower bottom plate, 7-upper cover plate, 8-side plate, 9-groove, 10-bracket, 11-base beam, 12-fastening bolts, 13-gasket, 61-flat plate, 62-inclined plate. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0026] See also Figure 3-4The utility model discloses a guide groove device for bars after rolling and shearing, comprising an upper cover plate 7, a lower bottom plate 6 and two side plates 8. The two side plates 8 connect the upper cover plate 7 and the lower bottom plate 6 on both sides to form a box-shaped guide groove, and the rolled piece can pass through the guide groove. The upper cover plate 7 is arranged to be tilted downward along the conveying direction of the rolled piece, and the tilt angle A is 3° to 5°. The lower bottom plate 6 comprises a plane plate 61 and an inclined plate 62. The inclined plate 62 and the plane plate 61 are arranged in sequence along the conveying direction of the rolled piece, and the plane plate 61 and the inclined plate 62 are an integrated structure. The inclined plate 62 is arranged to be tilted upward along the conveying direction of the rolled piece, and the tilt angle B is 5° to 7°. The length is controlled at about 750-850mm to prevent the angle from being too large to interfere with the guiding function of the guide groove. The flat plate 61 is arranged horizontally and a suitable length can be set according to its distance from the input roller guide groove; the two side plates 8 are vertically welded on both sides of the lower bottom plate 6, and are symmetrically arranged structures. The ends of the two side plates 8 close to the rolled piece entrance are trumpets opened to the front and rear sides. The angle C of the two side plates 8 close to the rolled piece entrance is 10°~12°. The guide groove entrance is 280-300mm high and 280-300mm wide; there are no specific requirements for the height and width of the outlet, which can be slightly smaller than the size of the cooling bed input roller guide groove entrance.

[0027] The guide groove device of the utility model can ensure that the running trajectory of each specification of rolled pieces completely coincides with the rolling line elevation by changing the inclination angle of the lower bottom plate 6 and the upper cover plate 7 at the guide groove inlet end, and can also minimize the length of the suspended section of the rolled pieces when running at the multiple-length shear, thereby further improving the multiple-length shearing stability.

[0028] Preferably, the upper cover plate 7 and the two side plates 8 are detachably connected.

[0029] The guide groove device of this embodiment has a detachable connection between the upper cover plate and the side plate, so that the upper cover plate can be opened at any time, which is convenient for disassembly and maintenance.

[0030] Preferably, grooves 9 are provided on the upper cover plate 7 and the lower base plate 6 at positions corresponding to the positions of the shearing blades of the multiple-length shears, and the grooves 9 are matched with the limiting wedges of the shearing blades of the multiple-length shears so as not to interfere with the normal rotation of the shearing blades.

[0031] The guide groove device of this embodiment can maximize the distance between the guide groove and the multiple-length shear by arranging grooves 9 at the entrance ends of the lower base plate 6 and the upper cover plate 7, further ensuring that the running trajectory of each specification of rolled product completely coincides with the rolling line elevation.

[0032] Preferably, the inclination angle A of the upper cover plate 7 is 3°, the inclination angle B of the inclined plate 62 is 7°, and the angle C of the two side plates 8 near the end of the rolled piece entrance is 12°. Reasonable optimization of the angles of the upper cover plate 7, the lower base plate 6 and the side plates 8 can better ensure that the running trajectory of rolled pieces of various specifications completely coincides with the rolling line elevation.

[0033] Preferably, in order to make the guide groove bottom plate in contact with the red steel have higher wear resistance and longer service life, the thickness of the lower bottom plate 6 is greater than the thickness of the upper cover plate 7 and the side plate 8. Specifically, the lower bottom plate 6 is a Q345 steel plate with a thickness of 20-30 mm, and the upper cover plate 7 and the side plate 8 are both Q235 steel plates with a thickness of 12-14 mm, so as to control the guide groove cost.

[0034] Preferably, the upper cover plate 7 is connected to the side plate 8 by screws, so that the upper cover plate 7 can be detachably installed.

[0035] Preferably, at least two brackets 10 are provided on the lower bottom plate 6, and the two brackets 10 are installed on the base beam 11 of the cooling bed input roller 4 to achieve installation and fixation of the guide groove. Further, the bracket 10 is connected to the base beam 11 by a fastening bolt 12, and a gasket 13 is sleeved on the fastening bolt 12 between the bracket 10 and the base beam 11.

[0036] The guide groove device of this embodiment uses bolts to fix the bracket 10 to the base beam 11 of the cooling bed input roller 4. According to different specifications, the spacers 13 are added or removed between the bracket 10 and the roller base beam 11 to control the distance between the guide groove bottom plate and the rolling center line, thereby ensuring that the running trajectory of the rolled piece completely coincides with the rolling line elevation.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A guide groove device for bars after rolling and shearing, comprising an upper cover plate (7), a lower bottom plate (6) and two side plates (8), wherein the two side plates (8) connect the upper cover plate (7) and the lower bottom plate (6) at both sides to form a box-shaped guide groove, characterized in that: The upper cover plate (7) is arranged to be tilted downward along the conveying direction of the rolled piece, and the tilt angle A is 3° to 5°. The lower bottom plate (6) comprises a flat plate (61) and an inclined plate (62). The inclined plate (62) and the flat plate (61) are arranged in sequence along the conveying direction of the rolled piece, and the flat plate (61) and the inclined plate (62) are an integrated structure. The inclined plate (62) is arranged to be tilted upward along the conveying direction of the rolled piece, and the tilt angle B is 5° to 7°. The panel (61) is arranged horizontally; the two side panels (8) are vertically welded to the two sides of the lower base plate (6), and the ends of the two side panels (8) close to the rolled piece inlet are bell-shaped and open to the front and rear sides, and the angle C of the two side panels (8) close to the rolled piece inlet is 10° to 12°; the upper cover plate (7) and the two side panels (8) are detachably connected; grooves (9) are provided on the upper cover plate (7) and the lower base plate (6) at positions corresponding to the positions of the shearing blades of the multiple-length shears.

2. A guide groove device for bars after rolling and shearing according to claim 1, characterized in that: The inclination angle A of the upper cover plate (7) is 3°, the inclination angle B of the inclined plate (62) is 7°, and the included angle C of the two side plates (8) close to the end of the rolled piece inlet is 12°.

3. The guide groove device for bars after rolling and shearing according to claim 1, characterized in that: The thickness of the lower base plate (6) is greater than the thickness of the upper cover plate (7) and the side plate (8).

4. A guide groove device for bars after rolling and shearing according to claim 3, characterized in that: The lower base plate (6) is a Q345 steel plate with a thickness of 20-30 mm, and the upper cover plate (7) and the side plate (8) are both Q235 steel plates with a thickness of 12-14 mm.

5. The guide groove device for bars after rolling and shearing according to claim 1, characterized in that: The upper cover plate (7) is connected to the side plate (8) by means of screws.

6. A guide groove device for bars after rolling and shearing according to any one of claims 1 to 5, characterized in that: The lower bottom plate (6) is provided with at least two brackets (10), and the brackets (10) are installed on the base beam (11) of the cooling bed input roller table (4).

7. A guide groove device for bars after rolling and shearing according to claim 6, characterized in that: The bracket (10) is connected to the base beam (11) via a fastening bolt (12), and a gasket (13) is sleeved on the fastening bolt (12) between the bracket (10) and the base beam (11).

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