A system for preventing steel from running away in a steel rolling workshop

Abstract

The invention discloses a system for preventing steel from running away in a steel rolling workshop, comprising a flexible hanging wire, one end of which is fixed to one end of a protective cover of a rolling mill group, and the other end of which passes through the other end of the protective cover and is fixed to a bracket outside the protective cover; the flexible hanging wire is parallel to the forward direction of the steel billet; a hanging falling piece is suspended on the exposed section of the flexible hanging wire located on the protective cover, a falling point is directly below the hanging falling piece, and a proximity switch is arranged on the side of the falling point; the invention arranges the flexible hanging wire on the protective cover of the rolling mill group, when a rolling mill fails to produce steel, the flexible hanging wire is burned off by red steel, at which time the hanging falling piece falls downward to the falling point as the flexible hanging wire is burned off, the proximity switch detects that there is a hanging falling piece in the falling point, and sends a detection signal to the control system, and the control system starts the flying shear according to the preset instruction to cut the rear steel billet, so as to prevent the rear steel billet from continuing to enter the rolling mill group and prevent further damage to the equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of steel mill detection equipment, and in particular relates to a steel-running prevention system in a steel rolling workshop. Background Art

[0002] In the rolling mill of a steel mill, generally multiple rolling mills are used as a rolling production line to roll steel billets into steel products of predetermined specifications. There are generally more than a dozen rolling mills in a production line, and several adjacent rolling mills are grouped into a group.

[0003] In order to avoid the accumulation of billets, a flying shear is installed at the steel inlet of each rolling mill group. Workers are required to manually observe the working status of the rolling mill. When the front rolling mill fails, the flying shear is activated in time to cut the subsequent billets. However, manual observation by workers is easily affected by the subjective influence of workers. On the one hand, workers may misjudge, resulting in waste of billets and delaying production. On the other hand, workers may be careless and fail to observe the mill failure, which may cause the accumulation of scrap steel in the mill. Summary of the invention

[0004] The purpose of the present invention is to provide a steel-running prevention system for a steel rolling workshop, which can monitor the state of a rolling mill in real time and prevent the steel from running out of the rolling mill.

[0005] The present invention adopts the following technical scheme: a steel rolling workshop anti-escape steel system, comprising a flexible hanging wire, one end of which is fixed to one end of a protective cover of a rolling mill group, and the other end of which passes through the other end of the protective cover and is fixed to a bracket outside the protective cover;

[0006] The flexible hanging wire is parallel to the advancing direction of the billet;

[0007] A hanging drop piece is hung on the exposed section of the flexible hanging wire located on the protective cover, and the falling point is directly below the hanging drop piece, and a proximity switch is arranged on the side of the falling point;

[0008] Among them, the hanging falling piece is used to fall to the falling point after the rolling mill in the rolling mill group fails and the flexible hanging wire is burned out during steel tapping;

[0009] The proximity switch is used to generate a detection signal when the suspended falling piece falls to the falling point, and send the detection signal to the control system to start the flying shear located at the billet entrance of the rolling mill group to shear the billet.

[0010] Furthermore, the hanging falling piece is located at the steel outlet of the rolling mill group.

[0011] Furthermore, the flexible hanging line is a fishing line.

[0012] Furthermore, the bracket is a vertical rod.

[0013] Furthermore, the hanging falling piece is a heavy hammer.

[0014] The beneficial effect of the present invention is as follows: the present invention arranges a flexible hanging wire on the protective cover of the rolling mill group. When a rolling mill fails to produce steel, the flexible hanging wire is burned off by red steel (i.e., high-temperature steel). At this time, the hanging falling piece falls downward to the falling point as the flexible hanging wire is burned off. The proximity switch detects that there is a hanging falling piece at the falling point and sends a detection signal to the control system. The control system starts the flying shear according to the preset instructions to cut the rear steel billet to prevent the rear steel billet from continuing to enter the rolling mill group and prevent further damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic structural diagram of a system for preventing steel from escaping in a steel rolling workshop according to an embodiment of the present invention.

[0016] Among them: 1. Bracket; 2. Suspended falling parts; 3. Falling point; 4. Proximity switch; 5. Rolling mill; 6. Protective cover; 7. Flying shear; 8. Flexible hanging wire; 9. Steel billet. DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] The present invention discloses a steel-running prevention system for a steel rolling workshop. Figure 1 As shown, it includes a flexible hanging wire 8, one end of which is fixed to one end of the protective cover 6 of the rolling mill group, and the other end passes through the other end of the protective cover 6 and is fixed to the bracket 1 outside the protective cover 6; the flexible hanging wire 8 is parallel to the forward direction of the steel billet 9; the flexible hanging wire 8 is located on the exposed section of the protective cover 6 and is suspended with a hanging dropper 2, and the falling point 3 is directly below the hanging dropper 2, and a proximity switch 4 is arranged on the side of the falling point 3; wherein, the hanging dropper 2 is used to fall to the falling point 3 after the flexible hanging wire 8 is burned off during steel tapping when a rolling mill 5 in the rolling mill group fails; the proximity switch 4 is used to generate a detection signal when the hanging dropper 2 falls to the falling point 3, and send the detection signal to the control system to start the flying shear 7 located at the billet entrance of the rolling mill group to shear the billet 9.

[0019] The present invention sets a flexible hanging wire on the protective cover of the rolling mill group. When a rolling mill fails to produce steel, the flexible hanging wire is burned off by red steel (i.e., high-temperature steel). At this time, the hanging falling parts fall down to the falling point as the flexible hanging wire is burned off. The proximity switch detects that there are hanging falling parts in the falling point and sends a detection signal to the control system. The control system starts the flying shear according to the preset instructions to cut off the following steel billet to prevent the following steel billet from continuing to enter the rolling mill group and prevent further damage to the equipment. In addition, the system can realize automatic monitoring, reduce one monitoring post, reduce the false alarm rate, and improve the control accuracy of the system.

[0020] In the embodiment of the present invention, the hanging dropper 2 is located at the steel outlet of the rolling mill group. In this way, the flexible hanging wire can be prevented from being burned off by the steel billet output by the previous rolling mill group, thereby improving the accuracy of the system.

[0021] Specifically, the flexible hanging line 8 is a fishing line, which has a thin diameter and high strength, can hang heavy objects, and is easy to be burned off. In order to reduce costs, the bracket 1 is a vertical rod. In order to ensure that the hanging falling piece 2 falls into a predetermined falling point when falling, the hanging falling piece 2 is selected as a heavy hammer, which has a large gravity to prevent deviation when falling, increase the accuracy of the system, and the heavy hammer is also large in size, which can facilitate the proximity switch 4 to collect signals.

[0022] In addition, in order to prevent the heavy hammer from bouncing out after falling, a pit can be set at the falling point, and a shock-absorbing layer, such as a sand layer, can be laid in the pit. A protective net can also be erected around the falling point 3 to prevent other debris from entering the falling point 3 and causing a false alarm of the proximity switch 4. The protective net can be all-round protection. When the heavy hammer falls, the protective net is flattened under the action of gravity, which can also play a shock-absorbing role to prevent the heavy hammer from bouncing out of the falling point 3 after falling.

Claims

1. A steel rolling workshop anti-steel escape system, characterized in that: It comprises a flexible hanging wire (8), one end of which is fixed to one end of a protective cover (6) of a rolling mill group, and the other end of which passes through the other end of the protective cover (6) and is fixed to a bracket (1) outside the protective cover (6); the bracket (1) is a vertical rod; The flexible hanging wire (8) is parallel to the advancing direction of the steel billet (9); The flexible hanging wire (8) is hung with a hanging falling piece (2) on the exposed section of the protective cover (6); a falling point (3) is located directly below the hanging falling piece (2); and a proximity switch (4) is provided on the side of the falling point (3); The hanging falling member (2) is used to fall to the falling point (3) when a rolling mill (5) in the rolling mill group fails and the flexible hanging wire (8) is burned during steel tapping; The proximity switch (4) is used to generate a detection signal when the suspended falling piece (2) falls to the falling point (3), and send the detection signal to the control system to start the flying shear (7) located at the billet entrance of the rolling mill group to shear the billet (9).

2. A steel rolling mill anti-escape system as claimed in claim 1, characterized in that: The hanging dropper (2) is located at the steel outlet of the rolling mill group.

Images