A special steel strip pre-assembly device

Abstract

The utility model discloses a special steel band pre -adjusting device, and the device is applied to continuous casting and rolling production line, and is formed by the base of welding fixed block and sliding block guide groove, the fixed roll axle of screw fixed and the sliding roll axle of sliding block inlay in guide groove. When working, the adjustable roll gap formed by double roll axle is passed to high temperature steel band, and the fixed roll axle provides reference support, and the sliding roll axle adjusts the roll gap width according to the steel band deformation amount self -adaptation, and the lateral swing and torsional deformation of 15-20mm are inhibited in real time. Its beneficial effect includes: the linear degree of steel band running track is promoted, and the replacement cycle is prolonged, the vertical injection angle of high pressure descaling nozzle can be maintained, the carbon scale removal efficiency is improved, and the surface quality of casting blank and production continuity are fundamentally guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for continuous casting and rolling production lines, specifically a special steel strip pre-conditioning device. Background Technology

[0002] In continuous casting and rolling production lines, high-temperature steel strips are subjected to the combined effects of thermal stress and mechanical loads during continuous operation, which easily leads to torsional deformation and lateral swaying, with a maximum deformation amplitude of 15–20 mm. This deformation results in: 1) The steel belt replacement cycle is shortened by 30%, and its lifespan is significantly reduced; 2) When the high-pressure descaling nozzle forms an angle deviation of 15°-30° with the steel belt, the carbon scale removal efficiency decreases by 40%. 3) The rate of unqualified surface quality of cast billets has increased; Existing technologies employ a five-wheel alignment transmission system, but lack an active correction mechanism, thus failing to address the aforementioned problems. Therefore, a dedicated pre-alignment device capable of real-time correction of the steel belt trajectory is needed. Utility Model Content

[0003] The purpose of this invention is to provide a compact steel strip pre-conditioning device with adjustable roll gap, which effectively suppresses steel strip deformation, improves production stability and billet quality, and solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a special steel strip pre-conditioning device, comprising a base, a fixed roller, and a sliding roller. The base is a square base plate with a fixed block and a slider guide groove welded to the center of its surface. Six Φ16 mounting through holes are symmetrically opened on both sides of the base plate. The fixed roller is fixed to the fixed block 101 by a threaded connection. The sliding roller is assembled in the slider guide groove by a slider and forms a roller gap adjustment structure with the fixed roller. The axes of the fixed roller and the sliding roller are arranged parallel to each other, and the steel strip passes through the roller gap between them.

[0005] Preferably, the fixing block has an M24×40 threaded hole, and the shaft end of the fixing roller is machined with an M24×40 external thread, and the two are fixed by threaded engagement.

[0006] Preferably, the slider guide groove is a square opening groove with a width of 40mm and a depth of 41mm, and its surface opening width is 26mm; the slider and the slider guide groove are fitted with a clearance and can slide horizontally in the groove.

[0007] Preferably, both the fixed roller and the sliding roller include a roller, a shaft, and a bearing; the roller is a cylinder with a through hole in the center, and is rotatably connected to the shaft through a bearing, with the bearing being limited by an internal retaining spring.

[0008] Preferably, the end of the sliding roller is machined with an M24 external thread; the slider has an M24 threaded hole, and the two are fixed by threaded engagement.

[0009] The working process of this utility model is as follows: After being output from the continuous casting machine, the high-temperature steel strip passes through the roll gap between the fixed roller and the sliding roller. During operation, the lateral force of the steel strip pushes the slider of the sliding roller to move horizontally within the guide groove of the base, forcing the roller to apply a reverse constraint force to the deformed area of ​​the steel strip. The fixed roller provides reference support, and the sliding roller corrects the torsional deformation and sway of the steel strip in real time by adaptively adjusting the roll gap width, ensuring that the steel strip runs in a straight line to the downstream processing station.

[0010] The beneficial effects of this utility model are as follows: (1) This utility model uses the bidirectional rigid constraint of fixed roller and sliding roller to correct the lateral sway and torsional deformation of steel belt by 15-20mm in real time, so as to ensure the straightness of the running trajectory.

[0011] (2) The adjustable roll gap design of this utility model is adapted to different working conditions, reduces local wear of steel belt, and extends the steel belt replacement cycle appropriately.

[0012] (3) In this utility model, after the stability of the steel strip is improved, the high-pressure descaling nozzle maintains a perpendicular spray angle with the steel strip, which improves the efficiency of carbon scale removal and eliminates defects in the billet caused by insufficient cleaning. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall assembly of this utility model; Figure 2 This is a structural diagram of the base in this utility model; Figure 3 This is a cross-sectional view of the roller in this utility model; Figure 4 This is a structural diagram of the central axis of this utility model. Figure 5 This is a three-dimensional view of the slider in this utility model; In the diagram: 1. Base, 101. Fixing block, 102. Slider guide groove, 2. Fixing roller, 201. Shaft, 3. Sliding roller, 301. Roller, 4. Bearing, 5. Slider. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] like Figure 1-5The diagram illustrates a specialized steel strip pre-conditioning device, comprising a base 1, a fixed roller 2, and a sliding roller 3. The base 1 is a square base plate with a fixed block 101 and a slider guide groove 102 welded to its center. Six Φ16 mounting through holes are symmetrically formed on both sides of the base plate. The fixed roller 2 is fixed to the fixed block 101 via a threaded connection. The sliding roller 3 is assembled into the slider guide groove 102 via a slider 5, forming a roll gap adjustment structure with the fixed roller 2. The axes of the fixed roller 2 and the sliding roller 3 are parallel, and the steel strip passes through the roll gap between them. Both the fixed roller 2 and the sliding roller 3 include a roller 301, a shaft 201, and a bearing 4. The roller 301 is cylindrical with a through hole in its center and is rotatably connected to the shaft 201 via the bearing 4, which is limited by an internal retaining spring. The end of the shaft 201 of the sliding roller 3 is machined with an M24 external thread; the slider 5 has an M24 threaded hole, and the two are fixed by threaded engagement.

[0016] The fixing block 101 has an M24×40 threaded hole, and the shaft end of the fixing roller 2 is machined with an M24×40 external thread. The two are fixed by threaded engagement. The slider guide groove 102 is a square opening groove with a width of 40mm and a depth of 41mm, and its surface opening width is 26mm. The slider 5 is clearance-fitted with the slider guide groove 102 and can slide horizontally in the groove.

[0017] The working process of this utility model is as follows: like Figure 1 As shown, the base 1 is fixed to the casting machine foundation by expansion bolts. The fixed roller 2 is screwed into the threaded hole of the fixed block 101 and locked. The slider 5 of the sliding roller 3 is embedded in the slider guide groove 102, and the roll gap width is changed by adjusting the position of the slider 5 (adjustment range ±10mm). When the steel strip passes between the two rollers, the roller 301 rotates with the steel strip, and the bearing 4 reduces frictional resistance. When the steel strip deviates, the sliding roller 3 adaptively fine-tunes the roll gap to achieve dynamic correction.

[0018] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the field, other equivalent modifications and improvements can be made, and these should also be considered within the protection scope of this utility model.

Claims

1. A special steel strip pre-conditioning device, characterized in that it comprises: The base (1), fixed roller (2) and sliding roller (3) are provided. The base (1) is a square base plate with a fixed block (101) and a slider guide groove (102) welded to the center of its surface. Six Φ16 mounting through holes are symmetrically opened on both sides of the base plate. The fixed roller (2) is fixed to the fixed block (101) by a threaded connection; The sliding roller (3) is assembled in the slider guide groove (102) through the slider (5) and forms a roller gap adjustment structure with the fixed roller (2); The fixed roller (2) and the sliding roller (3) are arranged parallel to each other, and the steel strip passes through the roller gap between them.

2. The special steel strip pre-conditioning device according to claim 1, characterized in that: The fixing block (101) has an M24×40 threaded hole, and the shaft end of the fixing roller (2) is machined with an M24×40 external thread. The two are fixed by threaded engagement.

3. A special steel strip pre-conditioning device according to claim 1 or 2, characterized in that: The slider guide groove (102) is a square opening groove with a width of 40mm and a depth of 41mm, and its surface opening width is 26mm; the slider (5) is clearance-fitted with the slider guide groove (102) and can slide horizontally in the groove.

4. The special steel strip pre-conditioning device according to claim 3, characterized in that: Both the fixed roller (2) and the sliding roller (3) include a roller (301), a shaft (201) and a bearing (4); the roller (301) is a cylinder with a through hole in the center, and is rotatably connected to the shaft (201) through the bearing (4), and the bearing (4) is limited by an inner retaining spring.

5. A special steel strip pre-conditioning device according to claim 4, characterized in that: The sliding roller (3) has an M24 external thread machined at the shaft (201) end; the slider (5) has an M24 threaded hole, and the two are fixed by threaded engagement.

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