Strip steel coiling production line and safety protection device and safety protection method thereof

Abstract

The invention discloses a strip steel coiling production line and a safety protection device and method thereof.The safety protection device comprises a collector, a scrap steel inlet communicating with the cylindrical side wall of a scrap steel collecting space is formed in the collector, one side wall of the scrap steel inlet is tangent to the side wall of the scrap steel collecting space, and the other side wall of the scrap steel inlet is tangent to the side wall of the scrap steel collecting space; a central angle corresponding to the scrap steel inlet in the circumferential direction of the scrap steel collecting space is not greater than 90 degrees; the two supporting beams are installed at the two ends, in the axial direction of the waste steel collecting space, of the collector correspondingly, and the supporting beams are used for being connected with side guide plates of the strip steel coiling production line; and the detection device is electrically connected with the coiling machine, and the detection device is configured to send out a detection signal when it is detected that waste steel enters the waste steel inlet. The safety protection device is fixed on the strip steel coiling production line through the supporting beam, and when strip steel enters a collector abnormally, a detection signal can be sent out to control a corresponding coiling machine to stop, so that accident expansion is avoided, and the safety of rear equipment and personnel is protected.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hot rolling coiling machines, and particularly relates to a strip steel coiling production line and a safety protection device and method thereof. BACKGROUND

[0002] The hot rolling coiling machine is one of the most important devices on the rolling line, is arranged at the end of the production line, and is used for coiling the hot rolling strip steel running at high speed into a steel coil so as to transport and store the strip steel. In order to realize continuous production, a plurality of coiling machines are generally installed behind the continuous rolling machine, are arranged in sequence, and are used for cyclically coiling the product. When the rear coiling machine fails, in order to avoid the production line from stopping production, the coiling machine with failure can be stopped for maintenance, and the front coiling machine is used for working alone or is used for working in rotation to deal with the failure of the rear coiling machine. However, the failure processing mode can cause certain safety risks. SUMMARY

[0003] The application aims to at least solve one of the technical problems in the prior art. To this end, the application provides a strip steel coiling production line and a safety protection device and method thereof, which can avoid the expansion of accidents and protect the safety of the rear equipment and personnel when the front strip steel coiling is abnormal.

[0004] In a first aspect, the application provides a safety protection device of a strip steel coiling production line, which comprises:

[0005] A collector has a waste steel collecting space arranged in a cylindrical shape. A waste steel inlet is arranged on the collector and is in communication with the cylindrical side wall of the waste steel collecting space. One side wall of the waste steel inlet is tangent to the side wall of the waste steel collecting space. The central angle of the waste steel inlet corresponding to the waste steel collecting space in the circumferential direction is not greater than 90°.

[0006] Two support beams are respectively arranged at two ends of the collector in the axial direction of the waste steel collecting space. The support beams are used for being connected with the side guide plates of the strip steel coiling production line.

[0007] A detection device is arranged at the waste steel inlet. The detection device is electrically connected with the coiling machine. The detection device is configured to send a detection signal when it is detected that the waste steel inlet has waste steel entering.

[0008] According to the safety protection device of the application, the safety protection device is fixed on the strip steel coiling production line through the support beams, is flexible and convenient to install, can be set in a targeted manner according to the coiling machine that needs to be maintained, the waste steel collecting space arranged in a cylindrical shape can buffer and collect the impact of the strip steel when the strip steel is abnormally entered into the collector, and the detection device can send a detection signal to control the corresponding coiling machine to stop when the strip steel is abnormally entered into the collector, so as to avoid the expansion of accidents and effectively protect the safety of the rear equipment and personnel.

[0009] According to one embodiment of the present application, the collector comprises a plurality of circular-arc steel plates, the plurality of circular-arc steel plates are uniformly distributed along the axial direction of the scrap steel collecting space, a first connecting piece is connected between two adjacent circular-arc steel plates, and the plurality of circular-arc steel plates define the scrap steel collecting space.

[0010] According to one embodiment of the present application, a plurality of first connecting pieces are provided, the plurality of first connecting pieces are spaced apart along the circumferential direction of the circular-arc steel plate, the detection device is arranged in the gap between two adjacent circular-arc steel plates, and is fixed to the first connecting piece closest to the scrap steel inlet.

[0011] According to one embodiment of the present application, the safety protection device further comprises:

[0012] A hoisting beam is installed at the top of the collector, the hoisting beam extends along the axial direction of the scrap steel collecting space and is fixedly connected with the plurality of circular-arc steel plates, and the hoisting beam is provided with a hoisting hole;

[0013] Two connecting beams are respectively arranged on both sides of the axial direction of the scrap steel collecting space, and the connecting beams are connected between the end portions of the hoisting beam and the support beams.

[0014] According to one embodiment of the present application, the support beam extends along a direction perpendicular to the axis of the scrap steel collecting space, the bottom of the support beam is provided with a receiving groove for accommodating a lifting lug of the side guide plate, the support beam is provided with a positioning pin penetrating through the side wall of the receiving groove, and the support beam is connected with the lifting lug of the side guide plate through the positioning pin.

[0015] According to one embodiment of the present application, the support beam comprises two support plates spaced apart, a plurality of second connecting pieces are connected between the two support plates and spaced apart along the length direction of the support plates, and the two support plates and the plurality of second connecting pieces define the receiving groove.

[0016] According to one embodiment of the present application, the safety protection device further comprises a reinforcing beam, the reinforcing beam extends along the axial direction of the scrap steel collecting space, the reinforcing beam is arranged on the outer side of the collector and corresponds to the entering direction of the scrap steel inlet, and the reinforcing beam is connected with the plurality of circular-arc steel plates and the two support beams.

[0017] According to one embodiment of the present application, the collector comprises a first body and a second body distributed from top to bottom along the height direction, the first body is detachably connected with the second body, the scrap steel inlet is arranged on the second body, and the support beam is fixedly connected with the second body.

[0018] In a second aspect, the present application provides a strip steel coiling production line, which comprises:

[0019] A conveying roller;

[0020] A plurality of coilers are arranged at intervals along the conveying roller table, two side guides are arranged between two adjacent coilers, and the two side guides are distributed on both sides of the conveying roller table.

[0021] The safety protection device according to any one of the first aspect is arranged at the front side of the coiler requiring maintenance among the plurality of coilers, the collector is arranged between the two side guides, the scrap steel inlet is opposite to the incoming direction of the conveying roller table, and the two support beams are respectively supported on and connected with the corresponding side guides.

[0022] According to the strip coiling production line provided by the application, when the coiler at the rear needs to be maintained or repaired, the safety protection device in the first aspect is arranged at the front side of the coiler, so that the strip can be intercepted when the strip coiling at the front is abnormal, the cylindrical scrap steel collecting space can buffer and collect the impact of the strip, and when the strip abnormally enters the collector, the detection device can send a detection signal to control the corresponding coiler to stop, so as to avoid the expansion of the accident and effectively protect the safety of the equipment and personnel at the rear.

[0023] In a third aspect, the application provides a safety protection method for the strip coiling production line according to the second aspect, and the safety protection method comprises the following steps:

[0024] Opening the two side guides on the side of the incoming direction of the coiler requiring maintenance to a preset opening degree, and the preset opening degree matches the spacing of the two support beams;

[0025] Lifting the inlet end or the outlet end of the safety protection device to the side guide, and connecting the support beam with the corresponding side guide;

[0026] Electrically connecting the detection device with the control system of the strip coiling production line, the detection device is configured to send a detection signal to the control system when detecting that the scrap steel inlet has scrap steel entering, and the control system is configured to control the corresponding coiler to stop after receiving the detection signal.

[0027] According to the safety protection method provided by the application, when the coiler at the rear needs to be maintained or repaired, the safety protection device in the first aspect is arranged at the front side of the coiler, so that the strip can be intercepted when the strip coiling at the front is abnormal, the cylindrical scrap steel collecting space can buffer and collect the impact of the strip, and when the strip abnormally enters the collector, the detection device can send a detection signal to control the corresponding coiler to stop, so as to avoid the expansion of the accident and effectively protect the safety of the equipment and personnel at the rear.

[0028] Additional aspects and advantages of the application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings in which:

[0030] Figure 1 is a structural schematic diagram of a safety protection device of a strip steel coiling production line provided by an embodiment of the present application;

[0031] Figure 2 is another structural schematic diagram of a safety protection device of a strip steel coiling production line provided by an embodiment of the present application;

[0032] Figure 3 is a partial structural schematic diagram of a safety protection device of a strip steel coiling production line provided by an embodiment of the present application;

[0033] Figure 4 is an exploded structural schematic diagram of a safety protection device of a strip steel coiling production line provided by an embodiment of the present application;

[0034] Figure 5 is a structural schematic diagram of a strip steel coiling production line provided by an embodiment of the present application;

[0035] Figure 6 is a flow schematic diagram of a safety protection method of a strip steel coiling production line provided by an embodiment of the present application.

[0036] Reference Signs:

[0037] 100, strip steel coiling production line; 110, conveying roller; 120, coiler; 130, side guide plate; 131, lifting lug;

[0038] 140, safety protection device; 141, collector; 141a, scrap steel collection space; 141b, scrap steel inlet; 1411, circular arc-shaped steel plate; 1412, first connecting piece; 142, support beam; 1421, support plate; 1422, second connecting piece; 1423, containing groove; 1424, positioning pin; 143, detection device; 144, hoisting beam; 1441, hoisting hole; 145, connecting beam; 146, reinforcing beam; 147, first device body; 148, second device body;

[0039] 200, strip steel. DETAILED DESCRIPTION

[0040] Embodiments of the present application are described in detail below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, in which the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation of the present application, and are not to be understood as limiting the present application.

[0041] Reference is made below to Figures 1-6A strip coiling production line and a safety protection device and method thereof are described.

[0042] Please refer to Figures 1 to 3 , Figure 1 It is a front view of the safety protection device 140. Figure 2 It is a left view of the safety protection device 140. Figure 3 It is a top view of the safety protection device 140. According to some embodiments of the present application, the safety protection device 140 of the strip coiling production line 200 comprises a collector 141, two support beams 142 and a detection device 143.

[0043] The collector 141 is provided with a cylindrical scrap steel collection space 141a. The collector 141 is provided with a scrap steel inlet 141b which is in communication with the cylindrical side wall of the scrap steel collection space 141a. One side wall of the scrap steel inlet 141b is tangent to the side wall of the scrap steel collection space 141a. The central angle of the scrap steel inlet 141b corresponding to the circumference of the scrap steel collection space 141a is not greater than 90°.

[0044] The core structure of the collector 141 is the internal scrap steel collection space 141a, which is designed in a cylindrical shape. The cylindrical structure has good mechanical properties and can effectively buffer the impact of the strip 200. In some examples, the collector 141 can be made by rolling and welding steel plates. The thickness of the steel plate can be selected according to the actual use scenario and the impact force of the strip 200.

[0045] The scrap steel inlet 141b is provided on the collector 141 and is in communication with the cylindrical side wall of the scrap steel collection space 141a. One side wall of the scrap steel inlet 141b is tangent to the side wall of the scrap steel collection space 141a. This tangent design allows the strip 200 to smoothly transition from the scrap steel inlet 141b into the cylindrical collection space when it abnormally enters the collector 141, reducing impact energy loss and avoiding jamming or rebounding of the strip 200 at the inlet.

[0046] The central angle of the scrap steel inlet 141b corresponding to the circumference of the scrap steel collection space 141a is limited to not greater than 90°. When the head of the strip 200 enters the cylindrical scrap steel collection space 141a from one side of the scrap steel inlet 141b, it will move around the side wall. If the opening angle is not greater than 90°, the head of the strip 200 will return to the other side of the scrap steel inlet 141b after one revolution around the scrap steel collection space 141a, forming an effective angle with the middle part of the strip 200 and achieving further coiling and collection. If the opening angle of the scrap steel inlet 141b is greater than 90°, the head of the strip 200 will directly escape from the other side of the scrap steel inlet 141b after returning, which cannot be effectively collected and causes a safety hazard. For example, the central angle of the scrap steel inlet 141b can be 30°, 45°, 60°, 80°, 90°, etc. The specific angle is not limited.

[0047] Two support beams 142 are respectively installed at the two ends of the collector 141 in the axial direction of the scrap steel collection space 141a, and the support beams 142 are used to be connected with the side guide plate 130 of the strip steel 200 coiling production line.

[0048] The support beam 142 is used to connect the collector 141 with the side guide plate 130 of the strip steel 200 coiling production line, so as to realize the fixed installation of the safety protection device 140 on the production line. The connection mode of the support beam 142 and the collector 141 can be various. In some examples, a welding groove suitable for the support beam 142 is pre-processed on the end face of the two ends of the collector 141. After the support beam 142 is placed in the corresponding position, the support beam 142 is firmly welded on the collector 141 by arc welding, gas shielded welding and other welding processes. This connection mode has high structural strength and can withstand a large impact force. In other examples, a connecting flange is arranged at the two ends of the collector 141, and a plurality of bolt holes are uniformly distributed on the connecting flange. At the same time, bolt holes of the same specification are also opened on the corresponding position of the support beam 142. During installation, high-strength bolts are sequentially inserted through the bolt holes of the support beam 142 and the connecting flange, and nuts are used to tighten and fix, so as to realize the reliable connection of the two. This mode is convenient for disassembly and maintenance. When the collector 141 or the support beam 142 needs to be overhauled and replaced, it can be quickly disassembled and assembled.

[0049] The detection device 143 is arranged at the scrap steel inlet 141b, and the detection device 143 is electrically connected with the coiler 120. The detection device 143 is configured to send a detection signal when it is detected that the scrap steel inlet 141b has scrap steel entering.

[0050] The detection device 143 is arranged at the scrap steel inlet 141b, and the detection device 143 is electrically connected with the coiler 120. The detection device 143 is configured to send a detection signal when it is detected that the scrap steel inlet 141b has scrap steel entering.

[0051] In actual implementation, when the coiler 120 of the strip steel 200 coiling production line fails and is under maintenance, the safety protection device 140 can be arranged in front of the failed coiler 120, and then the maintenance of the failed coiler 120 is performed. If the coiling of the strip steel 200 of the coiler 120 located in front of the failed coiler 120 in the strip steel 200 coiling production line is abnormal, the strip steel 200 moves in the direction of the collector 141 away from the normal coiling path, and the strip steel 200 enters the scrap steel collection space 141a of the collector 141 through the scrap steel inlet 141b. Due to the cylindrical structure of the collector 141, the impact force of the strip steel 200 can be effectively buffered, and thanks to the angle of the scrap steel inlet 141b being not greater than 90°, the strip steel 200 can be gradually wound in the collector 141 after entering, so that the strip steel 200 is prevented from colliding with the rear failed coiler 120, and the safety of the rear equipment and personnel is protected. At the same time, when the detection device 143 arranged at the scrap steel inlet 141b detects the entry of the scrap steel, a detection signal is immediately sent, and the signal is transmitted to the coiler 120 to control the coiler 120 to stop, so that the abnormal situation is prevented from further deteriorating.

[0052] According to the safety protection device 140 provided by the embodiments of the present application, the safety protection device 140 is fixed on the strip steel 200 coiling production line through the support beam 142, and is flexible and convenient to install. The safety protection device 140 can be arranged in a targeted manner according to the coiler 120 that needs to be maintained. The collector 141 can intercept the strip steel 200 when the strip steel 200 coiling in front is abnormal. The cylindrical scrap steel collection space 141a can buffer and collect the impact of the strip steel 200. When the strip steel 200 abnormally enters the collector 141, the detection device 143 can send a detection signal to control the corresponding coiler 120 to stop, so as to avoid the accident from expanding, and effectively protect the safety of the rear equipment and personnel.

[0053] Please refer to Figures 1 to 3 According to some embodiments of the present application, the collector 141 can include a plurality of circular arc-shaped steel plates 1411, the plurality of circular arc-shaped steel plates 1411 are spaced apart along the axial direction of the scrap steel collection space 141a, and a first connecting piece 1412 is connected between two adjacent circular arc-shaped steel plates 1411. The plurality of circular arc-shaped steel plates 1411 define the scrap steel collection space 141a.

[0054] The number of the circular-arc steel plates 1411 is not specifically limited, and can be four, five, seven, ten or more. For example, when the number is seven, the circular-arc steel plates 1411 are spaced apart from each other along the axis of the scrap steel collecting space 141a. Each of the circular-arc steel plates 1411 is arc-shaped, and the curvature thereof is adapted to the cylindrical shape of the scrap steel collecting space 141a. The circular-arc steel plates 1411 are made of steel plate material, and have good strength and toughness to resist the impact of the strip steel 200. Since the strip steel 200 has a certain width, the circular-arc steel plates 1411 spaced apart from each other can be perpendicular to the width direction of the strip steel 200, and can withstand the impact of the strip steel 200 in a vertical stress mode. Compared with a parallel stress mode, the circular-arc steel plates 1411 have stronger impact resistance. The spacing distance between adjacent circular-arc steel plates 1411 can be adjusted according to the common width of the strip steel 200. For example, the spacing distance can be set to 10-30 cm, so as to effectively block the strip steel 200 and prevent the strip steel 200 from escaping due to excessively large spacing.

[0055] The first connecting member 1412 can stably connect adjacent circular-arc steel plates 1411, and ensure the reliability of the collector 141. The first connecting member 1412 can have various forms. For example, the first connecting member 1412 can be a bolt connection, and corresponding connecting holes are formed in the edges of adjacent circular-arc steel plates 1411. High-strength bolts are passed through the connecting holes and are fastened by nuts, so as to achieve stable connection. Alternatively, the first connecting member 1412 can be a welding member, and the edges of adjacent circular-arc steel plates 1411 are welded to form a firm combination. Alternatively, the first connecting member 1412 can be a hinged member, and adjacent circular-arc steel plates 1411 are hinged together by the hinged member. In this way, the circular-arc steel plates 1411 can rotate relative to each other to a certain extent, so as to ensure the stability of the connection, and also buffer stress through slight rotation when a large impact is received.

[0056] When the strip steel 200 is abnormally wound, and the strip steel 200 moves towards the collector 141, the strip steel 200 will impact the circular-arc steel plates 1411 spaced apart from each other along the axis of the scrap steel collecting space 141a. Since the circular-arc steel plates 1411 are arranged perpendicularly to the strip steel 200, the circular-arc steel plates 1411 can efficiently withstand the impact force of the strip steel 200, and disperse the impact force. Adjacent circular-arc steel plates 1411 are connected into a whole structure by the first connecting member 1412, so as to ensure that the collector 141 will not disintegrate when an impact is received. The strip steel 200 is constrained in the space defined by the plurality of circular-arc steel plates 1411, and is wound and collected.

[0057] According to the collector 141 provided in the embodiments of the present application, the plurality of circular-arc steel plates 1411 spaced apart from each other along the axis and the first connecting member 1412 are combined, so as to adapt to the width characteristics of the strip steel 200, and significantly enhance the impact resistance of the strip steel 200 in a vertical stress mode. The spacing arrangement can effectively block the strip steel 200, and also reduces the amount of material used for the collector 141, and reduces the manufacturing cost.

[0058] Please refer toFigures 1 to 3 According to some embodiments of the present application, the first connecting piece 1412 can be provided in plurality, the plurality of first connecting pieces 1412 can be distributed at intervals along the circumferential direction of the circular-arc-shaped steel plate 1411, and the detection device 143 can be arranged in the gap between two adjacent circular-arc-shaped steel plates 1411 and fixed to the first connecting piece 1412 closest to the scrap steel inlet 141b.

[0059] The number of the first connecting pieces 1412 is not specifically limited, for example, two, three, four or more first connecting pieces 1412 can be provided, and the plurality of first connecting pieces 1412 are distributed at intervals along the circumferential direction of the circular-arc-shaped steel plate 1411, which can uniformly connect the adjacent circular-arc-shaped steel plates 1411 in the circumferential direction and enhance the stability of the overall structure of the collector 141.

[0060] The detection device 143 is arranged in the gap between two adjacent circular-arc-shaped steel plates 1411 and fixed to the first connecting piece 1412 closest to the scrap steel inlet 141b, so that the detection device 143 can more directly detect the strip steel 200 entering the scrap steel inlet 141b. Since the first connecting piece 1412 connects the adjacent circular-arc-shaped steel plates 1411, it provides a stable mounting basis for the detection device 143, ensuring that the detection device 143 will not be displaced or loosened under the impact of the strip steel 200 and the like, thereby ensuring the accuracy and reliability of its detection. Moreover, the detection device 143 is located in the gap between the two circular-arc-shaped steel plates 1411, which can provide a certain protection for the detection device 143 and avoid the failure of the detection device 143 due to the impact of the strip steel 200.

[0061] In some examples, when the number of the circular-arc-shaped steel plates 1411 is more than two, the detection device 143 can be arranged in the gap between the two circular-arc-shaped steel plates 1411 near the middle position of the plurality of circular-arc-shaped steel plates 1411, so as to improve the detection accuracy of the detection device 143.

[0062] Please refer to Figure 1 and Figure 2 According to some embodiments of the present application, the safety protection device 140 can further include a hoisting beam 144 and two connecting beams 145. The hoisting beam 144 is installed on the top of the collector 141, extends along the axial direction of the scrap steel collecting space 141a and is fixedly connected with the plurality of circular-arc-shaped steel plates 1411, and the hoisting beam 144 is provided with a hoisting hole 1441. The two connecting beams 145 are respectively arranged on the two sides of the axial direction of the scrap steel collecting space 141a and connected between the end of the hoisting beam 144 and the support beam 142.

[0063] The hoisting beam 144 is in a long strip structure, such as a rectangular beam, an I-beam, etc. The hoisting beam 144 is installed at the top of the collector 141 and extends along the axial direction of the scrap steel collecting space 141a. The hoisting beam 144 can be connected to the plurality of circular arc-shaped steel plates 1411 in various ways. In some examples, the hoisting beam 144 can be welded to the top of the circular arc-shaped steel plate 1411 at the bottom of the hoisting beam 144 to ensure firm combination. In other examples, the hoisting beam 144 and the circular arc-shaped steel plate 1411 can be fastened together by bolts. The hoisting beam 144 is provided with hoisting holes 1441. The number and position of the hoisting holes 1441 depend on the actual hoisting requirements. Generally, there are two or four hoisting holes 1441 symmetrically distributed on the hoisting beam 144. The hoisting holes 1441 can be circular or elliptical in shape and used for passing hoisting ropes, chains or other hoisting tools to facilitate hoisting, transportation, installation and disassembly of the entire safety protection device 140.

[0064] The number of the connecting beams 145 is two, which are arranged on both sides of the scrap steel collecting space 141a in the axial direction. One end of the connecting beam 145 is connected to the end of the hoisting beam 144, and the other end is connected to the support beam 142 to improve the overall structural strength and stability of the connection. The connecting beam 145 can be connected to the hoisting beam 144 and the support beam 142 in various ways. In some examples, the connecting beam 145 can be welded to the end of the hoisting beam 144 and the support beam 142 to form a rigid connection, so that the three are tightly combined into one whole to effectively transfer and disperse the stress. In other examples, the connecting beam 145, the end of the hoisting beam 144 and the support beam 142 can be fixed by high-strength bolts and nuts through corresponding connection holes to ensure the stability of the connection and facilitate later maintenance and disassembly. The connecting beam 145 can be a rectangular beam or an I-beam, which has good mechanical properties. The cross-sectional size of the connecting beam 145 is designed according to the stress of the entire device to ensure that the connecting beam 145, the hoisting beam 144 and the support beam 142 work together to withstand external forces such as the impact of the strip steel 200 and maintain the stability of the device.

[0065] The safety protection device 140 provided by the embodiments of the present application adds the hoisting beam 144 and the connecting beam 145, which makes the installation, disassembly and transportation of the safety protection device 140 more convenient and efficient. The device can be quickly hoisted through the hoisting holes 1441. The connecting beam 145 connects the hoisting beam 144 and the support beam 142, which significantly improves the overall structural strength and forms a stable mechanical structure system. When the system withstands the impact of the strip steel 200, it can effectively disperse the stress, avoid structural damage and ensure the normal operation of the detection device 143, so as to more reliably play a safety protection role when the strip steel 200 is wound abnormally, avoid the expansion of the accident and protect the safety of the equipment and personnel behind.

[0066] Referring to Figures 1 to 3 According to some embodiments of the present application, the support beam 142 can extend in a direction perpendicular to the axis of the scrap steel collecting space 141a, the bottom of the support beam 142 can be provided with a receiving groove 1423 for accommodating the lifting lug 131 of the side guide plate 130, the support beam 142 can be provided with a positioning pin 1424 penetrating the side wall of the receiving groove 1423, and the support beam 142 can be connected with the lifting lug 131 of the side guide plate 130 through the positioning pin 1424.

[0067] The support beam 142 extends in a direction perpendicular to the axis of the scrap steel collecting space 141a, and is generally in the shape of a long strip, which can be made of steel and has sufficient strength and rigidity to support the collector 141 and withstand the force generated by the impact of the steel strip 200. Such a perpendicular extension direction can provide stable support for the collector 141 in the transverse direction, ensuring the stability of the collector 141 during the operation of the steel strip 200 coiling production line.

[0068] The receiving groove 1423 is provided at the bottom of the support beam 142 and is adapted in shape and size to the lifting lug 131 of the side guide plate 130 for accommodating the lifting lug 131 of the side guide plate 130. For example, if the lifting lug 131 of the side guide plate 130 is in the shape of a rectangle, the receiving groove 1423 is also designed as a corresponding rectangular groove, the length, width and depth of which are determined according to the actual size of the lifting lug 131 to ensure that the lifting lug 131 can be smoothly inserted into the receiving groove 1423, and the gap between them is small to achieve a close fit. The provision of the receiving groove 1423 makes the connection between the support beam 142 and the side guide plate 130 more precise and stable, reducing the shaking of the connection part.

[0069] It should be noted that the side guide plate 130 on the steel strip 200 coiling production line is generally provided with a lifting lug 131 for lifting the side guide plate 130 itself, and by providing a receiving groove 1423 for accommodating the lifting lug 131, the existing equipment structure is ingeniously utilized to ensure the installation stability of the safety protection device 140.

[0070] The support beam 142 is provided with a positioning pin 1424 penetrating the side wall of the receiving groove 1423, which is generally in the shape of a cylinder and can be made of high-strength alloy steel. During installation, after the lifting lug 131 of the side guide plate 130 is inserted into the receiving groove 1423 at the bottom of the support beam 142, the positioning pin 1424 is inserted through the corresponding pin hole on the side wall of the receiving groove 1423 and the lifting lug 131, thereby firmly connecting the support beam 142 and the lifting lug 131 of the side guide plate 130 together. The connection mode of the positioning pin 1424 can effectively limit the relative displacement between the support beam 142 and the side guide plate 130, ensuring the installation precision and stability of the safety protection device 140 on the steel strip 200 coiling production line.

[0071] In actual implementation, when installing the safety protection device 140, the receiving groove 1423 at the bottom of the support beam 142 is aligned with the lifting lug 131 of the side guide plate 130, the lifting lug 131 is embedded in the receiving groove 1423, and then the positioning pin 1424 is inserted through the pin hole on the side wall of the receiving groove 1423 and the lifting lug 131, so as to realize the connection and fixation of the support beam 142 and the side guide plate 130. When the coiling of the strip steel 200 is abnormal and the strip steel 200 impacts the collector 141, the impact force received by the collector 141 is transmitted to the side guide plate 130 through the support beam 142. Since the support beam 142 is stably connected with the lifting lug 131 of the side guide plate 130 through the positioning pin 1424, the impact force can be effectively dispersed and transmitted, and at the same time, the positioning pin 1424 limits the relative displacement between the support beam 142 and the side guide plate 130, so that the entire safety protection device 140 remains stable under the impact of the strip steel 200 and cannot be loosened or displaced. When disassembling the safety protection device 140, only the positioning pin 1424 needs to be removed, and the disassembly is very convenient.

[0072] Please refer to Figures 1 to 3 According to some embodiments of the present application, the support beam 142 can include two support plates 1421 arranged at intervals, and a plurality of second connecting pieces 1422 arranged at intervals along the length direction of the support plates 1421 can be connected between the two support plates 1421, and the two support plates 1421 and the plurality of second connecting pieces 1422 define the receiving groove 1423.

[0073] The support beam 142 is composed of two support plates 1421 arranged at intervals and has a long strip-shaped flat shape. The support beam 142 is made of steel material with high strength and rigidity, such as Q345 steel plate, to ensure that it can withstand the load generated by the impact of the collector 141 and the strip steel 200. The two support plates 1421 are arranged in parallel and extend in a direction perpendicular to the axis of the scrap steel collecting space 141a. The spacing between the two support plates 1421 is designed according to the width dimension of the lifting lug 131 of the side guide plate 130, so that the lifting lug 131 can be smoothly embedded in the space formed between the two support plates 1421.

[0074] The number of the second connecting pieces 1422 is not specifically limited and can be two, three, four or more. The plurality of second connecting pieces 1422 are arranged at intervals along the length direction of the support plates 1421. The second connecting pieces 1422 serve to connect the two support plates 1421 into a whole, ensure the shape stability of the receiving groove 1423, and enhance the structural strength of the support beam 142. The second connecting pieces 1422 can have various structural forms, such as cylindrical connecting columns which are fixed on the corresponding positions of the two support plates 1421 by welding; square connecting blocks which have connecting holes formed on the connecting blocks and the support plates 1421 respectively and are fastened and connected by bolts and nuts; or steel bars extending in the height direction, the two sides of the steel bars being welded to the two support plates 1421 respectively to form a stable support structure.

[0075] The receiving groove 1423 is defined by the two support plates 1421 and the plurality of second connecting pieces 1422, and is used to accommodate the lifting lug 131 of the side guide plate 130. The cross-sectional shape of the receiving groove 1423 is adapted to the shape of the lifting lug 131. For example, the second connecting pieces 1422 are steel strips extending in the height direction, and the two adjacent steel strips and the two support plates 1421 jointly define a rectangular receiving groove 1423, the width and height of which can accommodate the lifting lug 131. The lifting lug 131 can be rectangular, triangular or other shapes.

[0076] Please refer to Figures 1 to 3 According to some embodiments of the present application, the safety protection device 140 can further include a reinforcing beam 146, which can extend along the axial direction of the scrap steel collecting space 141a. The reinforcing beam 146 can be arranged outside the collector 141 and correspond to the entering direction of the scrap steel inlet 141b. The reinforcing beam 146 is connected with the plurality of arc-shaped steel plates 1411 and the two support beams 142.

[0077] The reinforcing beam 146 has a long strip structure and extends along the axial direction of the scrap steel collecting space 141a. The reinforcing beam 146 can be made of high-strength steel to ensure good load-bearing capacity and anti-deformation ability. The reinforcing beam 146 is arranged outside the collector 141 and corresponds to the entering direction of the scrap steel inlet 141b, so that the reinforcing beam 146 can directly bear the impact force generated when the strip steel 200 enters the collector 141. The length of the reinforcing beam 146 is adapted to the length of the collector 141 in the axial direction of the scrap steel collecting space 141a, so as to cover the main stress area of the collector 141 in this direction.

[0078] The reinforcing beam 146 and the plurality of arc-shaped steel plates 1411 can be connected by welding. The reinforcing beam 146 and the arc-shaped steel plates 1411 are welded at the corresponding positions to firmly combine them and form an integral structure, which effectively transfers and disperses the impact force. Alternatively, the reinforcing beam 146 and the arc-shaped steel plates 1411 can be connected by bolts. Connection holes are formed on the reinforcing beam 146 and the arc-shaped steel plates 1411 respectively, and the reinforcing beam 146 and the arc-shaped steel plates 1411 are fastened together by bolts and nuts, which facilitates the maintenance and disassembly in the later stage. The reinforcing beam 146 and the two support beams 142 can also be connected by welding or bolting. For example, the reinforcing beam 146 is rigidly connected with the support beams 142 at both ends by welding, or connection holes are formed on the ends of the reinforcing beam 146 and the support beams 142, and the reinforcing beam 146 and the support beams 142 are fixed by high-strength bolts. Through the connection with the plurality of arc-shaped steel plates 1411 and the two support beams 142, the reinforcing beam 146 can tightly connect the various parts of the collector 141, thereby enhancing the structural strength and stability of the entire safety protection device 140.

[0079] In actual implementation, when the strip steel 200 is reeled abnormally and enters the collector 141 through the scrap steel inlet 141b, the impact force of the strip steel 200 first acts on the reinforced beam 146 corresponding to the entering direction of the scrap steel inlet 141b. Since the reinforced beam 146 extends axially along the scrap steel collection space 141a and is connected with the plurality of circular-arc steel plates 1411 and the two support beams 142, the impact force is dispersedly transmitted to each of the circular-arc steel plates 1411 and the support beams 142 through the reinforced beam 146. The plurality of circular-arc steel plates 1411 cooperatively bear the impact force under the connection of the first connecting piece 1412, and the support beams 142 further transmit the force to the side guide plate 130 of the production line, so that the entire structural system jointly acts to disperse and resolve the impact force of the strip steel 200, thereby avoiding damage of a certain component due to excessive force.

[0080] Referring to Figures 1 to 4 According to some embodiments of the present application, the collector 141 can include a first device body 147 and a second device body 148 distributed from top to bottom in the height direction, the first device body 147 and the second device body 148 are detachably connected, the scrap steel inlet 141b is arranged on the second device body 148, and the support beam 142 is fixedly connected with the second device body 148.

[0081] The collector 141 is divided into the first device body 147 and the second device body 148 distributed from top to bottom in the height direction, and the first device body 147 and the second device body 148 jointly define the scrap steel collection space 141a. The first device body 147 and the second device body 148 can be made of metal materials such as steel plates and have sufficient strength to bear the impact of the strip steel 200. The scrap steel inlet 141b is arranged on the second device body 148 to facilitate the entry of the strip steel 200, and the structure and position of the scrap steel inlet 141b can refer to the foregoing embodiments; the support beam 142 is fixedly connected with the second device body 148, and the connection manner can refer to the foregoing embodiments, such as welding, bolt connection, etc., to ensure that the support beam 142 can stably support the second device body 148 and further support the entire collector 141.

[0082] In some examples, the first device body 147 and the second device body 148 are both composed of a plurality of circular-arc steel plates 1411. For example, the first device body 147 includes a plurality of circular-arc steel plates 1411 distributed axially along the scrap steel collection space 141a, and the circular-arc steel plates 1411 are connected through the first connecting piece 1412; the second device body 148 also includes a plurality of circular-arc steel plates 1411, and the circular-arc steel plates 1411 of the second device body 148 are opposite to the circular-arc steel plates 1411 of the first device body 147 in the height direction.

[0083] The detachable connection of the first device body 147 and the second device body 148 can be achieved in various ways. In some examples, flange structures are arranged at the abutting edges of the circular arc-shaped steel plates 1411 of the first device body 147 and the second device body 148, respectively, bolt holes are formed on the flanges, and the two flanges are fastened together by bolts and nuts. When disassembling, the bolts are unscrewed to separate the two flanges; in other examples, buckle connection can also be used, buckles are arranged at the edges of the circular arc-shaped steel plates 1411 of the first device body 147, and corresponding buckle grooves are arranged at the edges of the circular arc-shaped steel plates 1411 of the second device body 148. When installing, the buckles are buckled into the buckle grooves, and when disassembling, the buckles are unlocked by pressing or prying; in yet other examples, pin connection can also be used, pin holes are formed at the abutting edges of the circular arc-shaped steel plates 1411 of the first device body 147 and the second device body 148, and the connection is achieved by inserting a pin. When disassembling, the pin is pulled out to separate the two flanges.

[0084] In addition, the hoisting beam 144 can be fixedly connected only with the circular arc-shaped steel plate 1411 of the first device body 147, or when the first device body 147 and the second device body 148 are separated, the connection of the connecting beams 145 at both ends of the hoisting beam 144 with the second device body 148 can be achieved by a detachable structure (such as bolt connection) to facilitate the disassembly and installation of the second device body 148.

[0085] Please refer to Figure 5 The strip steel 200 coiling production line provided in the embodiments of the present application comprises a conveying roller 110, a plurality of coiling machines 120, and the safety protection device 140 according to any one of the technical solutions described above.

[0086] It should be noted that the strip steel 200 coiling production line provided in the embodiments of the present application comprises the safety protection device 140 according to any one of the technical solutions described above, and therefore has the technical features and effects of the safety protection device 140 according to any one of the technical solutions described above, which will not be described herein again.

[0087] The conveying roller 110 serves as a carrier for conveying the strip steel 200 and is composed of a series of rollers arranged along the conveying direction. The rollers are driven by motors and transmission mechanisms to realize continuous and stable conveying of the strip steel 200.

[0088] The plurality of coiling machines 120 are arranged at intervals along the conveying roller 110, two side guides 130 are arranged between adjacent two coiling machines 120, and the two side guides 130 are distributed on both sides of the conveying roller 110.

[0089] A plurality of coilers 120 are arranged at intervals along the conveying roller 110, and are core equipment for realizing coiling forming of the strip steel 200. Each coiler 120 comprises a winding drum, a tension control mechanism, a coiler helper and other key components. The winding drum rotates under the drive of a motor to wind the strip steel 200 into a coil; the tension control mechanism adjusts the tension of the strip steel 200 in real time to ensure the coiling quality; and the coiler helper assists the strip steel 200 to start winding on the winding drum smoothly. The arrangement interval of the coilers 120 is determined according to the production rhythm of the strip steel 200 and the space requirement for equipment maintenance, for example, the center distance between adjacent coilers 120 can be set to 8-12 meters to facilitate equipment maintenance and fault handling.

[0090] Two side guides 130 are arranged between adjacent two coilers 120 and symmetrically distributed on both sides of the conveying roller 110. The side guide 130 is generally formed by welding a steel plate and has sufficient rigidity, and the height thereof is higher than the thickness of the strip steel 200 to prevent the strip steel 200 from deviating laterally during conveying. The side guide 130 is provided with a lifting lug 131 structure cooperating with the support beam 142 of the safety protection device 140 at a position close to the outer side, the lifting lug 131 is generally rectangular in shape and is fixed on the side guide 130 by welding or bolt connection to provide a support point for installation of the safety protection device 140.

[0091] The safety protection device 140 is arranged at the front side of a coiler 120 that needs to be maintained among the plurality of coilers 120, the collector 141 is arranged between the two side guides 130, the scrap steel inlet 141b of the collector 141 is opposite to the incoming direction of the conveying roller 110, and the two support beams 142 are respectively supported on the two side guides 130 and connected with the corresponding side guides 130.

[0092] When a coiler 120 needs to be maintained, the safety protection device 140 is installed between the two side guides 130 at the front side of the coiler 120, the scrap steel inlet 141b of the collector 141 is opposite to the conveying roller 110, and once the coiler 120 has an abnormal strip steel 200 coiling out, the strip steel 200 can directly enter the collector 141.

[0093] According to the strip steel 200 coiling production line provided by the embodiment of the present application, when the coiler 120 at the rear needs to be maintained or maintained, the safety protection device 140 in the first aspect is arranged at the front side of the coiler 120, which can intercept the strip steel 200 when the strip steel 200 coiling at the front is abnormal, the cylindrical scrap steel collection space 141a can buffer and collect the impact of the strip steel 200, and when the strip steel 200 abnormally enters the collector 141, the detection device 143 can send a detection signal to control the corresponding coiler 120 to stop, so as to avoid the expansion of the accident and effectively protect the safety of the equipment and personnel at the rear.

[0094] Please refer to Figure 6The embodiment of the present application also provides a safety protection method of a strip steel 200 coiling production line.

[0095] It should be noted that the strip steel 200 coiling production line is the coiling production line of any of the above technical solutions, and therefore has the technical features and effects of the coiling production line of any of the above technical solutions, which will not be repeated here.

[0096] The safety protection method comprises steps 310, 320 and 330.

[0097] In step 310, two side guides 130 on the side of the incoming direction of the coiler 120 to be repaired are opened to a preset opening degree, and the preset opening degree is matched with the interval of the two support beams 142.

[0098] In step 310, in the strip steel 200 coiling production line, when a coiler 120 needs to be repaired, two side guides 130 on the side of the incoming direction of the coiler 120 are opened in order to install the safety protection device 140. The side guides 130 are usually installed on the production line frame through a movable connection structure such as a hinge or a sliding rail, and the opening mode can be manual operation or electric drive. The preset opening degree is determined according to the interval of the two support beams 142 of the safety protection device 140, for example, if the interval of the support beams 142 is 1.5 meters, the side guides 130 are opened to 1.6-1.7 meters, so that the support beams 142 can be smoothly installed on the side guides 130, and at the same time, the side guides 130 can provide stable support for the support beams 142. Such operation can create suitable space conditions for the installation of the safety protection device 140, and avoid the situation that the safety protection device 140 cannot be installed or is not firmly installed due to insufficient interval of the side guides 130.

[0099] In step 320, the safety protection device 140 is hoisted to the entrance end or the exit end of the side guide 130, and the support beam 142 is connected with the corresponding side guide 130.

[0100] In step 320, the safety protection device 140 is hoisted to the entrance end or the exit end of the side guide plate 130 using hoisting equipment such as a crane, an electric hoist, etc. During hoisting, the safety protection device 140 needs to be kept stable to avoid collision and damage. After reaching the predetermined position, the support beam 142 is connected with the corresponding side guide plate 130. For example, if the support beam 142 bottom accommodating groove 1423 cooperates with the side guide plate 130 lifting lug 131, and the positioning pin 1424 is fixed, first, the support beam 142 bottom accommodating groove 1423 is aligned with the side guide plate 130 lifting lug 131, so that the lifting lug 131 is embedded in the accommodating groove 1423, then the positioning pin 1424 is inserted through the accommodating groove 1423 sidewall and the corresponding pin hole on the lifting lug 131, and the nut is tightened, to complete the firm connection between the support beam 142 and the side guide plate 130, and ensure that the safety protection device 140 is stably installed on the production line.

[0101] In step 330, the detection device 143 is electrically connected with the control system of the strip steel 200 coiling production line. The detection device 143 is configured to send a detection signal to the control system when it detects that the scrap steel enters the scrap steel inlet 141b. The control system is configured to control the corresponding coiler 120 to stop running after receiving the detection signal.

[0102] In step 330, the detection device 143 and the control system of the strip steel 200 coiling production line are electrically connected through wires, cables, etc. The connection mode can adopt plug and socket type quick connection, which is convenient for installation and disassembly. It can also adopt terminal connection to ensure the reliability of the connection. When the detection device 143 detects that the scrap steel enters the scrap steel inlet 141b, it immediately transmits the detection signal to the control system. The control system is usually composed of an industrial control computer, a PLC (programmable logic controller), etc. The corresponding program logic is set in advance. After receiving the detection signal, the control system quickly sends a control instruction to control the corresponding coiler 120 to stop running, thereby avoiding the expansion of the accident and protecting the safety of the rear equipment and personnel.

[0103] According to the safety protection method provided by the embodiment of the present application, when the coiler 120 located at the rear needs to be repaired or maintained, the safety protection device 140 in the first aspect is arranged on the front side of the coiler 120. When the strip steel 200 coiling is abnormal in front, the strip steel 200 can be intercepted. The cylindrical scrap steel collecting space 141a can buffer and collect the impact of the strip steel 200. When the strip steel 200 abnormally enters the collector 141, the detection device 143 can send a detection signal to control the corresponding coiler 120 to stop running, thereby avoiding the expansion of the accident and effectively protecting the safety of the rear equipment and personnel.

[0104] The terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the use of the terms so construed can inter-change, such that "first" and "second" are interchangeable with "second" and "first", respectively, and vice versa. The ordinal numbers to designate the objects are used to distinguish the objects in a specific embodiment and are not intended to designate a certain sequence or order, unless otherwise specified. Also, the terms "comprise", "include", "contain", and / or "have" should be construed to be inclusive and to convey the possible inclusion of other elements or integers. In addition, the terms "a", "an", and / or "the" should be construed to be inclusive, unless otherwise specified herein.

[0105] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are used to indicate the orientation or position of the described or claimed item in the drawings as shown and are not intended to specify or limit the actual orientation or position of the described or claimed item in use or operation, and are thus to be construed as being open-ended terms that are intended to convey direction or position relative to other items or directions or positions that are described or claimed in relation thereto.

[0106] In the description of the present application, "first feature" and "second feature" can include one or more of the features.

[0107] In the description of the present application, "a plurality of" means two or more.

[0108] In the description of the present application, "on" or "under" of a first feature in relation to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them.

[0109] In the description of the present application, "on", "above", and "over" of a first feature in relation to a second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0110] In the description of the present application, the description referring to the terms "one embodiment", "some embodiments", "certain embodiments" or "exemplary embodiments" etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in the description are not necessarily referred to the same embodiment or example, and are merely placed for the purpose of providing a clear and consistent description. Also, the described particular features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0111] While the embodiments of the application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A safety guard for a strip steel coiling production line, characterized in that, The collector comprises a scrap steel collecting space arranged in a cylindrical shape, a scrap steel inlet is arranged on the collector and communicates with the cylindrical side wall of the scrap steel collecting space, one side wall of the scrap steel inlet is tangent to the side wall of the scrap steel collecting space, and the central angle of the scrap steel inlet corresponding to the circumference of the scrap steel collecting space in the circumferential direction is not greater than 90°. Two support beams are respectively arranged at the two ends of the collector in the axial direction of the scrap steel collecting space, and the support beams are used to be connected with the side guide plates of the strip steel coiling production line. A detection device is arranged at the scrap steel inlet, the detection device is electrically connected with the coiler, and the detection device is configured to send a detection signal when it is detected that the scrap steel inlet has scrap steel entering. The collector comprises a plurality of arc-shaped steel plates, the plurality of arc-shaped steel plates are uniformly distributed along the axial direction of the scrap steel collecting space, a first connecting piece is connected between adjacent two arc-shaped steel plates, and the plurality of arc-shaped steel plates define the scrap steel collecting space.

2. The safety shield for a strip steel coiling production line according to claim 1, characterized in that, The first connecting piece is provided in a plurality of forms, the plurality of first connecting pieces are spaced apart along the circumferential direction of the arc-shaped steel plate, the detection device is arranged in the gap between adjacent two arc-shaped steel plates, and the detection device is fixed to the closest first connecting piece to the scrap steel inlet.

3. The safety shield for a strip steel coiling production line according to claim 2, characterized in that, Further comprising:

4. The safety shield for a strip steel coiling production line according to claim 2, characterized in that, A hoisting beam is arranged on the top of the collector, the hoisting beam extends along the axial direction of the scrap steel collecting space and is fixedly connected with the plurality of arc-shaped steel plates, and a hoisting hole is arranged on the hoisting beam. Two connecting beams are respectively arranged on the two sides in the axial direction of the scrap steel collecting space, and the connecting beams are connected between the end portions of the hoisting beam and the support beams. The support beam extends in a direction perpendicular to the axis of the scrap steel collecting space, the bottom of the support beam is provided with a receiving groove for accommodating an eye of the side guide plate, the support beam is provided with a positioning pin penetrating through the side wall of the receiving groove, and the support beam is connected with the eye of the side guide plate through the positioning pin.

5. The safety shield for a strip steel coiling production line according to claim 2, characterized in that, The support beam comprises two support plates arranged at intervals, a plurality of second connecting pieces are arranged at intervals along the length direction of the two support plates, and the two support plates and the plurality of second connecting pieces define the receiving groove.

6. The safety shield for a strip steel coiling production line according to claim 5, characterized in that, Further comprising a reinforcing beam extending along the axial direction of the scrap steel collecting space, the reinforcing beam is arranged outside the collector and corresponds to the entering direction of the scrap steel inlet, and the reinforcing beam is connected with the plurality of arc-shaped steel plates and the two support beams.

7. The safety shield for a strip steel coiling production line according to claim 2, characterized in that, The collector comprises a first body and a second body arranged in a height direction from top to bottom, the first body and the second body are detachably connected, the scrap steel inlet is arranged on the second body, and the support beam is fixedly connected with the second body.

8. Safety shield for a strip steel coiling production line according to any one of claims 1-7, characterized in that, The collector comprises a first body and a second body arranged in a height direction from top to bottom, the first body and the second body are detachably connected, the scrap steel inlet is arranged on the second body, and the support beam is fixedly connected with the second body.

9. A strip steel coiling production line, characterized in that, The collector comprises a first body and a second body arranged in a height direction from top to bottom, the first body and the second body are detachably connected, the scrap steel inlet is arranged on the second body, and the support beam is fixedly connected with the second body. The collector comprises a first body and a second body arranged in a height direction from top to bottom, the first body and the second body are detachably connected, the scrap steel inlet is arranged on the second body, and the support beam is fixedly connected with the second body. ​ The safety guard according to any one of claims 1-8 is arranged at the front side of the coiler requiring maintenance among a plurality of coilers, the collector is arranged between two side guides, and the scrap steel inlet is opposite to the incoming direction of the conveying roller table, and two support beams are respectively supported on and connected with the corresponding side guides.

10. A safety protection method for a strip coiling production line as claimed in claim 9, characterized in that, Comprise: opening two side guides on the incoming direction side of the coiler requiring maintenance to a preset opening degree, the preset opening degree matches the spacing of the two support beams; hoisting the safety guard to the inlet end or outlet end of the side guide, and connecting the support beam with the corresponding side guide; electrically connecting the detection device with the control system of the strip coiling production line, the detection device is configured to send a detection signal to the control system when detecting that the scrap steel inlet has scrap steel entering, and the control system is configured to control the corresponding coiler to stop after receiving the detection signal.

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