Steel flying prevention device of bar production line

Abstract

The utility model relates to the technical field of bar production, in particular to a steel flying prevention device of a bar production line, which comprises side frames arranged on two sides of a rolling mill unit and a top frame arranged at the top of the rolling mill unit, each side frame comprises a plurality of protective frames and a protective door, and the protective frames are sequentially connected. The bottom of the protective frame is fixed on the ground on two sides of the rolling mill unit; the protective frame is provided with an opening facing the rolling mill, the protective doors are located on the two sides of the opening, one side of each protective door is rotationally connected with the protective frame, and the other end of each protective door is provided with a bolt so that the protective doors can shield the opening. U-steel is fixedly arranged on two sides of the tops of the side frames respectively, and two sides of the top frame are connected with the U-steel to seal the top of the rolling mill unit. The steel flying prevention device of the bar production line can protect the safety of personnel and equipment of the production line and effectively reduce potential safety hazards.

Description

Technical Field

[0001] The utility model relates to the technical field of bar production, in particular to a flying steel prevention device for a bar production line. Background Art

[0002] During the bar rolling process, each rolling pass relies on two counter-rotating rollers to compress the billet (workpiece) heated to a high temperature (typically between 800°C and 1100°C), causing it to plastically deform and be transported out of the mill in the rolling direction. During this process, the speed of the workpiece increases as the cross-section decreases. In the finishing mill, the speed can reach over 10 meters per second. At this point, the workpiece's cross-section is small and the operation is unstable, resulting in a "floating" effect. If the rolling path is blocked by foreign matter, there are process or equipment failures, or operator errors occur, the high-speed workpiece can fly out of the rolling line, causing a "flying steel" failure. Because the rolling mills in bar production lines are densely populated with operating tables and personnel on the production line, this high-temperature (800°C-1100°C) and high-speed (over 10 meters per second) flying workpiece poses a serious threat to personnel and equipment safety. Therefore, it is crucial to address the impact of flying steel and reduce safety hazards. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a flying steel prevention device for a bar production line, which can protect the safety of personnel and equipment in the production line and effectively reduce safety hazards.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A steel flying prevention device for a bar production line comprises side frames arranged on both sides of a rolling mill unit and a top frame arranged on the top of the rolling mill unit.

[0006] The side frame includes a protective frame and a protective door. The protective frame is provided with multiple pieces, and the multiple protective frames are connected in sequence. The bottom of the protective frame is fixed to the ground on both sides of the rolling mill unit. The protective frame is provided with an opening facing the rolling mill. The protective door is located on both sides of the opening. One side of the protective door is rotatably connected to the protective frame, and the other end is provided with a latch so that the protective door can block the opening.

[0007] Channel steels are fixedly provided on both sides of the top of the side frame, and both sides of the top frame are connected to the channel steels to close the top of the rolling mill unit.

[0008] Furthermore, a first protective net is fixedly installed in the protective frame and the protective door.

[0009] Furthermore, the top frame includes a frame, a support frame and a second protective net. The support frame is fixedly arranged in the frame, the fourth periphery of the second protective net is fixedly connected to the frame, and the second protective net is fixedly connected to the support frame.

[0010] Furthermore, a notch is provided on a side of the channel steel facing away from the side frame;

[0011] Drive wheels are rotatably provided on both sides of both ends of the frame, and the drive wheels are embedded in the slots. The drive wheels are driven by drive motors so that the drive wheels can move along the channel steel, and the top frame can close the top of the rolling mill or leave the top of the rolling mill.

[0012] Furthermore, the output shaft of the driving motor is provided with a reducer, and the two output shafts of the reducer are respectively connected to the two driving wheels at one end of the frame.

[0013] Furthermore, the latch includes a connecting tube, a latch rod and a latch seat.

[0014] The connecting tube is fixedly connected to the protective door, one end of the latch rod is slidably embedded in the connecting tube and is rotatably connected to the connecting tube, the latch seat is recessed on the ground, and when the protective door is closed, the latch rod can be embedded in the latch seat.

[0015] Furthermore, the protective door is fixed with a limit piece, and the end of the latch rod away from the connecting tube is provided with a first fixing piece and a second fixing piece in sequence along the direction close to the connecting tube. When the first fixing piece is clamped into the limit piece and abuts against the limit piece, the latch rod can be embedded in the latch seat; when the second fixing piece is clamped into the limit piece and abuts against the limit piece, the latch rod leaves the latch seat.

[0016] The beneficial effects of the utility model are:

[0017] The side frames and top frames form a cage-like safety protection structure. When a flying steel failure occurs, the high-temperature and high-speed rolled pieces can be "stifled" in the safety net, which not only protects the safety of personnel and equipment outside the safety net and greatly improves safety, but also concentrates the flying scrap steel, facilitating the subsequent processing and removal of scrap steel. An openable protective door is provided. When there is a need to get close to the rolling mill to adjust the rolling mill or measure the material shape, the protective door is opened and the operator can enter the production line through the opening to operate; a movable top frame is provided. When it is necessary to stop the mill to change rolls or repair equipment, the top frame is moved and moved away from the top of the rolling mill to make way for the lifting channel of the carriage from above. The utility model can protect the safety of personnel and equipment, and the side frames and top frame are provided with an openable structure, which does not affect the normal rolling adjustment or equipment maintenance work of the bar production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an anti-flying steel device for a bar production line according to a preferred embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the latch structure of the anti-flying steel device of the bar production line in a preferred embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the top frame structure of the anti-flying steel device of the bar production line in a preferred embodiment of the present invention.

[0021] In the figure, 1-side frame, 11-protective frame, 12-protective door, 13-channel steel, 131-notch, 14-first protective net, 2-top frame, 201-frame, 202-support frame, 203-second protective net, 21-driving wheel, 221-reducer, 23-bearing seat, 24-connecting rod, 3-rolling mill, 4-latch, 41-connecting cylinder, 42-latch rod, 43-latch seat, 44-limiting member, 451-first fixing member, 452-second fixing member. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please also see Figures 1 to 3 The anti-flying steel device of the bar production line of a preferred embodiment of the present invention includes side frames 1 arranged on both sides of the rolling mill unit and a top frame 2 arranged on the top of the rolling mill unit.

[0026] The side frame 1 includes a protective frame 11 and a protective door 12. The protective frame 11 is provided with multiple blocks, and the multiple protective frames 11 are connected in sequence, and the bottom of the protective frame 11 is fixed on the ground on both sides of the rolling mill unit; the protective frame 11 is provided with an opening facing the rolling mill 3, and the protective door 12 is located on both sides of the opening, and one side of the protective door 12 is rotatably connected to the protective frame 11, and the other end is provided with a pin 4 so that the protective door 12 can block the opening.

[0027] In this embodiment, a first protective net 14 is fixedly installed within the protective frame 11 and the protective door 12. The first protective net 14 is made of 3mm diameter wire, woven into a wire mesh with a 15mm x 15mm aperture. The 3mm wire diameter ensures the protective net is strong enough to withstand the impact of flying steel without increasing the cost and installation difficulty due to excessive thickness. The 15mm x 15mm aperture effectively blocks flying steel while minimizing the operator's view of the mill interior. Both the protective frame 11 and the protective door 12 are constructed as single-sided protective plates using angle steel and flat iron. Assembly holes are provided on the protective plates for easy assembly and disassembly.

[0028] Steel plates are laid on the ground on both sides of the rolling mill unit as the ground foundation, and then the protective frame 11 is fixed to the ground with expansion screws. The reason for choosing expansion screws for fixing is that this fixing method has good reliability in dealing with the vibrations generated when the rolling mill is working, and can ensure that the position of the protective frame 11 is stable during long-term use. The protective frames 11 are rotatably connected by hinges. This connection method not only ensures the firmness of the connection between the protective frames 11, but also facilitates the folding operation of the protective frames 11 during large-scale inspection and maintenance. The protective frame 11 is also rotatably connected to the protective door 12 by hinges. The selection and installation method of the hinges ensure the flexibility and stability of the protective door 12 during daily opening and closing operations. The protective door 12 of this embodiment is located at the feed and discharge of the rolling mill 3, and there is a gap between the two protective doors 12 for the placement of the output mechanism of the rolling mill.

[0029] like Figure 2 As shown, the latch 4 includes a connecting tube 41, a latch rod 42 and a latch seat 43.

[0030] The connecting tube 41 is fixedly connected to the protective door 12, one end of the latch rod 42 is slidably embedded in the connecting tube 41 and is rotatably connected to the connecting tube 41, the latch seat 43 is recessed on the ground, and when the protective door 12 is closed, the latch rod 42 can be embedded in the latch seat 43.

[0031] The protective door 12 is fixed with a limiting piece 44, and the end of the latch rod 42 away from the connecting tube 41 is sequentially provided with a first fixing piece 451 and a second fixing piece 452 along the direction close to the connecting tube 41. When the first fixing piece 451 is engaged with the limiting piece 44 and abuts against the limiting piece 44, the latch rod 42 can be embedded in the latch seat 43; when the second fixing piece 452 is engaged with the limiting piece 44 and abuts against the limiting piece 44, the latch rod 42 leaves the latch seat 43.

[0032] In this embodiment, the limiting member 44 is connected to the protective door 12 through a connecting shaft, and the bottoms of the first fixing member 451 and the second fixing member 452 can abut against the connecting shaft so that the first fixing member 451 is limited between the limiting member 44 and the protective door 12, thereby fixing the position of the latch rod 42.

[0033] In this embodiment, when it is necessary to approach the rolling mill to adjust the rolling mill or to measure and shape the material, the protective door 12 is opened, and the operator can enter the production line through the opening to perform operations. The latch 4 can be equipped with a lock, which can pass through the first protective net 14 to fix the position of the first fixing member 451 or the second fixing member 452, so that the latch rod 42 is fixed in the latch seat 43, thereby locking the protective door 12 and preventing accidents caused by accidental entry into the production line.

[0034] Channel steels 13 are fixedly provided on both sides of the top of the side frame 1, and both sides of the top frame 2 are connected to the channel steels 13 to close the top of the rolling mill unit.

[0035] like Figure 1 and Figure 2 As shown, the top frame 2 comprises a frame 201, a support frame 202, and a second protective net 203. The support frame 202 is fixedly mounted within the frame 201. The second protective net 203 is fixedly connected to the frame 201 on all sides, and the second protective net 203 is also fixedly connected to the support frame 202. The second protective net 203 of this embodiment has the same structure as the first protective net 14. This embodiment takes into account the need for real-time observation and monitoring of the rolling mill during production; the second protective net 203 has reserved holes and hanging points for monitoring equipment.

[0036] A notch 131 is formed on a surface of the channel steel 13 facing away from the side frame 1 .

[0037] Drive wheels 21 are rotatably mounted on both sides of the frame 201. Drive wheels 21 are embedded in notches 131 and driven by drive motors 22, allowing them to move along the channel steel 13, allowing the top frame 2 to close over or leave the top of the rolling mill 3. In this embodiment, the length of the channel steel 13 is greater than that of the side frame 1, and the channel steel 13 is supported on the ground by a support frame, thereby reserving space for the top frame 2 to open.

[0038] The output shaft of the drive motor 22 is equipped with a reducer 221. The two output shafts of the reducer 221 are respectively connected to the two drive wheels 21 at one end of the frame 201. In this embodiment, the reducer 221 is a WP reducer, with output shafts at both ends. Both output shafts of the reducer 221 are connected to the support frame 202 via bearing blocks 23. The two drive wheels 21 at the end away from the drive motor 22 are connected by a connecting rod 24. The ends of the connecting rod 24 are fixedly connected to the two drive wheels 21, and the middle of the connecting rod 24 is connected to the support frame 202 via the bearing block 23.

[0039] The electric energy of the driving motor 22 of this embodiment is transmitted by the cable suspended by the cable supporting trolley, and a wireless control box can be added to control the movement of the top frame 2 by equipping it with a wireless remote control.

[0040] The electric energy for the drive motor 22 is transmitted and controlled by a cable suspended from a cable trolley. When selecting the cable, the power requirements of the rolling mill, the electromagnetic interference in the working environment, and the cable's wear resistance, fire resistance and other performance requirements are comprehensively considered. The appropriate type of cable is selected to ensure that the electric energy can be transmitted safely and stably in the complex working environment of the rolling mill. At the same time, a wireless control box can also be equipped to control the movement of the top frame 2 by wireless remote control. The wireless control uses a frequency band within a suitable frequency range, and a signal enhancement module is set in the wireless control box. At the same time, the control box is electromagnetically shielded to ensure signal stability and prevent electromagnetic interference generated by the rolling mill equipment from affecting the transmission of the wireless control signal. In this embodiment, when rolling red steel, the top frame 2 is moved and made to block the top of the rolling mill 3; when it is necessary to stop the mill to change rolls or repair equipment, the top frame 2 is moved and made to leave the top of the rolling mill 3 to make way for the lifting channel of the carriage from above.

[0041] Since flying steel often occurs in the finishing mill area, where the rolled stock has a small cross-section and is moving at high speed, on-site personnel often have no time to intervene (such as manually stopping the mill or activating the flying shear) once flying steel occurs. Therefore, this area poses the greatest risk and hazard. Therefore, in this embodiment, the side frames 1 and top frame 2 are installed in the finishing mill area of the bar production line.

[0042] The side frames 1 and top frame 2 of this embodiment form a cage-like safety protection structure. In the event of a flying steel failure, they can trap the high-temperature, high-speed rolled stock within the safety net, protecting personnel and equipment outside the safety net and significantly improving safety. They also collect the flying scrap, facilitating subsequent scrap processing and removal. Furthermore, both the side frames 1 and top frame 2 are designed to be removable, ensuring that normal rolling adjustments or equipment maintenance on the bar production line are not affected.

Claims

1. An anti-flying steel device for a bar production line, characterized in that: It comprises side frames (1) arranged on both sides of the rolling mill unit and a top frame (2) arranged on the top of the rolling mill unit. The side frame (1) includes a protective frame (11) and a protective door (12), wherein the protective frame (11) is provided with a plurality of pieces, the plurality of protective frames (11) are connected in sequence, and the bottom of the protective frame (11) is fixed on the ground on both sides of the rolling mill unit; the protective frame (11) is provided with an opening facing the rolling mill (3), and the protective door (12) is located on both sides of the opening, and one side of the protective door (12) is rotatably connected to the protective frame (11), and the other end is provided with a latch (4) so that the protective door (12) blocks the opening; Channel steels (13) are fixedly provided on both sides of the top of the side frame (1), and both sides of the top frame (2) are connected to the channel steels (13) to close the top of the rolling mill unit.

2. The anti-flying steel device for a bar production line according to claim 1, characterized in that: A first protective net (14) is fixedly arranged in the protective frame (11) and the protective door (12).

3. The anti-flying steel device for a bar production line according to claim 1, characterized in that: The top frame (2) comprises a frame (201), a support frame (202) and a second protective net (203); the support frame (202) is fixedly arranged in the frame (201); the periphery of the second protective net (203) is fixedly connected to the frame (201); and the second protective net (203) is fixedly connected to the support frame (202).

4. The anti-flying steel device for a bar production line according to claim 3, characterized in that: A notch (131) is recessed on a side of the channel steel (13) facing away from the side frame (1); Drive wheels (21) are rotatably provided on both sides of both ends of the frame (201), and the drive wheels (21) are embedded in the notches (131). The drive wheels (21) are driven by drive motors (22) so that the drive wheels (21) can move along the channel steel (13), and the top frame (2) can close the top of the rolling mill (3) or leave the top of the rolling mill (3).

5. The anti-flying steel device for a bar production line according to claim 4, characterized in that: The output shaft of the driving motor (22) is provided with a reducer (221), and the two output shafts of the reducer (221) are respectively connected to the two driving wheels (21) at one end of the frame (201).

6. The anti-flying steel device for a bar production line according to claim 1, characterized in that: The latch (4) comprises a connecting tube (41), a latch rod (42) and a latch seat (43). The connecting tube (41) is fixedly connected to the protective door (12), one end of the latch rod (42) is slidably embedded in the connecting tube (41) and is rotatably connected to the connecting tube (41), the latch seat (43) is recessed on the ground, and when the protective door (12) is closed, the latch rod (42) can be embedded in the latch seat (43).

7. The anti-flying steel device for a bar production line according to claim 6, characterized in that: The protective door (12) is fixedly provided with a limiting piece (44), and the end of the latch rod (42) away from the connecting tube (41) is sequentially provided with a first fixing piece (451) and a second fixing piece (452) along a direction close to the connecting tube (41); when the first fixing piece (451) is engaged with the limiting piece (44) and abuts against the limiting piece (44), the latch rod (42) can be embedded in the latch seat (43); when the second fixing piece (452) is engaged with the limiting piece (44) and abuts against the limiting piece (44), the latch rod (42) leaves the latch seat (43).

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