Transverse moving device for pinch roll of coiling machine on hot-rolled strip steel production line

Abstract

The utility model discloses a hot rolling strip steel production line coiler pinch roll transverse moving device, which belongs to the field of steel production and comprises a frame, a lower pinch roll bracket and a transverse moving hydraulic cylinder. The frame is connected with a coiling machine frame and located under the upper pinch roll, and the lower pinch roll bracket is connected with the upper surface of the frame in a sliding mode. The lower pinch roll is located in the lower pinch roll bracket, and the two ends of the lower pinch roll are rotationally connected with side plates of the lower pinch roll bracket through bearings. The front end of the lower pinch roll bracket is connected with a transverse hydraulic cylinder; and the front end of the transverse moving hydraulic cylinder is connected with the coiling rack. The position of the pinch roll of the coiling machine can be adjusted, so that the pinch roll has the function of assisting the threading of the head of strip steel.

Description

Technical Field

[0001] The utility model relates to a steel production device, in particular to a transverse movement device for a pinch roller of a coiler of a hot-rolled strip steel production line. Background Art

[0002] The hot rolling coiler is the last process of the hot rolling production line. The strip steel must pass through the pinch rollers when it is transported from the finishing mill to the coiler unit. The main function of the pinch rollers is to apply a certain clamping force to the strip steel at the head biting stage, and at the same time, to perform the first bending deformation on it. Due to the small space below the pinch rollers, the front and rear guide plates of the pinch rollers are connected with the front and rear rollers of the pinch rollers, and the length of the guide plate at the pinch roller outlet is relatively long. When the head of the thin-gauge strip steel passes through this pinch roller to the downstream coiler, the strip steel contacts the guide plate below the pinch roller. Due to the large resistance, it is easy to start the sleeve at this position. In serious cases, stacking occurs, resulting in production-type scrap steel accidents, which seriously restricts the production stability of thin-gauge steel.

[0003] In the prior art, the abnormal situation of strip head hitting the guide plate can only be detected and handled in time. For example, "A method and device to prevent scrapping of coiler" (CN201811005100.8) realizes the automatic detection and automatic scrapping of the strip head turning up and the strip head hitting the guide plate to reduce scrapping accidents of coiler. "A method for controlling the tension of hot-rolled coiling" (CN201210133378.X) is aimed at the problem of the tail of thin-gauge high-temperature hot-rolled strip on the roller. Through a new coiler tail tension conversion method, the stability of the strip tail running on the roller is improved, and the resulting poor coil shape and edge defects are reduced.

[0004] In summary, the problem of abnormal strip threading caused by the strip head hitting the guide plate and regional resistance cannot be improved. Utility Model Content

[0005] The technical task of the utility model is to provide a transverse shifting device for the pinch rollers of a coiler of a hot-rolled strip production line in view of the deficiencies of the above-mentioned prior art, which can enable the pinch rollers to provide the function of assisting the strip head to thread the strip by adjusting the position of the pinch rollers of the coiler.

[0006] The utility model solves the technical problem through a technical solution: a transverse shifting device for the pinch rollers of a coiler of a hot-rolled strip production line, characterized in that it comprises a frame, a lower pinch roller bracket and a transverse shifting hydraulic cylinder; the frame is connected to the coiler frame and is located directly below the upper pinch roller, the lower pinch roller bracket is slidably connected to the upper surface of the frame; the lower pinch roller is located in the lower pinch roller bracket, and the two ends of the lower pinch roller are rotatably connected to the side plates of the lower pinch roller bracket through bearings; the front end of the lower pinch roller bracket is connected to the transverse shifting hydraulic cylinder; the front end of the transverse shifting hydraulic cylinder is connected to the coiler frame.

[0007] Furthermore, it also includes a connecting shaft, and the front end of the lower pinch roller bracket is connected to the transverse hydraulic cylinder through the connecting shaft.

[0008] Furthermore, there are baffles at the front and rear of the frame.

[0009] Furthermore, the upper surface of the frame is provided with a track, and the corresponding position of the lower pinch roller bracket is provided with a slide groove, the track is in the slide groove, and the two are slidably connected.

[0010] Furthermore, a travel switch connected to the transverse hydraulic cylinder circuit is provided on the track.

[0011] Compared with the prior art, the utility model has the following outstanding beneficial effects:

[0012] 1. The utility model realizes the lateral shift of the position of the lower pinch roller, so that the pinch roller plays the function of assisting the strip threading, which can significantly reduce the phenomenon of strip threading and sheathing at the head of the strip, and inhibits the sheathing of the strip upstream of the pinch roller;

[0013] 2. Reduce the risk of thin gauge steel stacking and improve the stability of thin gauge production;

[0014] 3. Multiple coiler pinch rollers can be used in combination to improve the production efficiency of hot-rolled thin-gauge products and increase the output of thin-gauge products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the pinch roller position control mode of the utility model. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments of the specification. In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0018] In the following embodiments, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model application can be understood according to the specific circumstances.

[0019] In order to better describe, the front and back are set based on the strip direction, that is, Figure 1 The right direction is the front, and the reverse direction is the back. It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the embodiments of the utility model application.

[0020] The utility model discloses a transverse moving device for a pinch roller of a coiler of a hot-rolled strip steel production line, which is used to realize the transverse moving of a lower pinch roller of the coiler to a position perpendicular to the center of an upper pinch roller 1.

[0021] like Figure 1 As shown, the utility model includes a frame 8, a lower pinch roller bracket 3, a connecting shaft 4 and a transverse hydraulic cylinder 5.

[0022] The frame 8 is connected to the coiling frame and is located directly below the upper pinch roller 1. The lower pinch roller bracket 3 is slidably connected to the upper surface of the frame 8. In order to increase safety, baffles 6 are provided in front and rear of the frame 8 to limit the lateral movement area of ​​the lower pinch roller bracket 3.

[0023] The lower pinch roller 2 is located in the lower pinch roller bracket 3, and both ends of the lower pinch roller 2 are rotatably connected to the side plates of the lower pinch roller bracket 3 through bearings.

[0024] The front end of the lower pinch roller bracket 3 is connected to the transverse hydraulic cylinder 5 through the connecting shaft 4, and the transverse hydraulic cylinder 5 provides power to realize the forward and backward movement of the lower pinch roller bracket 3. The front end of the transverse hydraulic cylinder 5 is connected to the coiling frame.

[0025] In order to increase the sliding stability, the upper surface of the frame 8 is provided with a track 7, and the corresponding position of the lower pinch roller bracket 3 is provided with a slide groove, the track 7 is embedded in the slide groove, and the two are slidably connected.

[0026] In the optimized solution, a travel switch connected to the traverse hydraulic cylinder circuit is provided on the track 7, and when the rear end of the lower pinch roller bracket 3 contacts the travel switch, the traverse hydraulic cylinder 5 is closed. This determination of the traverse position can also be achieved by using a traverse hydraulic cylinder with a built-in magnetic scale detection.

[0027] like Figure 2 As shown, when the strip head is threaded, the lower pinch roller 2 moves horizontally to a position perpendicular to the center of the upper pinch roller 1, the upper pinch roller 1 is pressed down to the set roller gap position G1, and the pinch rollers operate in a new speed control mode. At this time, both the upper and lower pinch rollers provide forward power for the strip head.

[0028] It should be noted that matters not described in detail in this embodiment are well-known technologies in the art.

[0029] The above description is only for the purpose of describing the present invention in detail for the specific implementation purpose of the present invention. For those skilled in the art, various obvious changes made to the present invention without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. A traverse device for pinch rollers of a coiler of a hot-rolled strip production line, characterized in that: It includes a frame, a lower pinch roller bracket and a transverse hydraulic cylinder; the frame is connected to the winding frame and is located directly below the upper pinch roller, and the lower pinch roller bracket is slidably connected to the upper surface of the frame; the lower pinch roller is located in the lower pinch roller bracket, and the two ends of the lower pinch roller are rotatably connected to the side plates of the lower pinch roller bracket through bearings; the front end of the lower pinch roller bracket is connected to the transverse hydraulic cylinder; the front end of the transverse hydraulic cylinder is connected to the winding frame.

2. The device for traversing the pinch rollers of the coiler of the hot strip production line according to claim 1 is characterized in that: It also includes a connecting shaft, and the front end of the lower pinch roller bracket is connected to the transverse hydraulic cylinder through the connecting shaft.

3. The lateral movement device of the pinch roller of the coiler of the hot strip production line according to claim 1 is characterized in that: The frame has baffles at the front and rear.

4. The traverse device for the pinch roller of the coiler of the hot strip production line according to claim 1 is characterized in that: The upper surface of the frame is provided with a track, and the corresponding position of the lower pinch roller bracket is provided with a slide groove, the track is in the slide groove, and the two are slidably connected.

5. The device for traversing the pinch rollers of the coiler of the hot strip production line according to claim 4 is characterized in that: A travel switch connected with the transverse hydraulic cylinder circuit is arranged on the track.

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