JP2012024809A - Coil carrying system - Google Patents

Abstract

When a coil is transported along a transport line having a height difference, the coil can be transported to a high ground side without using a chain conveyor, and the coil ascending gradient is increased as compared with the prior art.
SOLUTION: A rail 15 laid along a transfer line 7, a plurality of skids 20 arranged at intervals along the transfer line 7 and on which a coil 2 is placed, and a skid adjacent to each other in the transfer line 7. And a plurality of coil cars 30 arranged every 20 spaces. The rails 15 are laid across a plurality of steps at different heights so that steps are provided in the transport line 7. The plurality of skids 20 are disposed at least on the step portions 16 of the rails 15 of the plurality of steps, and the coil 2 is interposed between the coil cars 30 on both sides of the upper and lower steps where the skids 20 of the step portions 16 penetrate into the skids 20. It is configured as an interstage shared skid 20A capable of delivering.
[Selection] Figure 2

Description

  The present invention relates to a coil transport system for transporting a coil in which a metal strip is wound along a transport line having a height difference.

  In general, a metal strip manufactured by a continuous rolling facility is wound around a mandrel of a downcoiler to form a coil, and then extracted from the mandrel and conveyed to a coil storage yard or other processing facility. At this time, the transfer line that is the transfer path of the coil changes variously according to the layout of the factory, and the coil is transferred using transfer devices that are combined in various ways according to such a transfer line. Yes.

  Here, when winding a metal strip with a downcoiler, the metal strip conveyed on the rolling line is wound at a position lower than the middle position of the rolling line, so the winding position by the downcoiler is the ground surface (GL). It is often lower than the height. In this case, the coil entrance such as the coil storage yard is often provided at the ground surface height, and from the viewpoint of avoiding interference with other equipment, the entrance side and the exit surface from the winding position to the ground surface height. The coil needs to be transported along a transport line having a height difference from the side.

  As described above, when a coil is conveyed along a conveying line having a difference in height, conventionally, a chain conveyor as disclosed in Patent Document 1 is provided to be inclined with respect to a horizontal plane, and this chain conveyor is used to provide a highland side. Generally, a method of conveying the coil is employed.

JP-A-10-328735

  By the way, when a coil is conveyed to the high ground side by such a chain conveyor, the coil on the chain conveyor is conveyed by pulling the chain. For this reason, as the coil ascending gradient expressed by the gradient with respect to the horizontal plane of the chain conveyor increases, the load of the load due to the weight of the coil with respect to the chain increases. If the load applied to the chain is large, the strength of the chain will be reduced and the frequency of chain maintenance will be increased. there were.

  The inventors of the present invention investigated the coil ascending gradient of the chain conveyor, and it has been confirmed that generally the safety is estimated and the ascending gradient is about 50/1000.

  Thus, when a chain conveyor is used as a coil conveying device, there has conventionally been an upper limit value for the coil ascending gradient. The existence of such an upper limit means that the horizontal length of the coil conveying device for raising the coil having a constant height is increased, and the coil conveying device is enlarged accordingly. In addition, a large-scale civil engineering work has been required to install the coil transfer device.

  Therefore, the present invention has been devised in view of the above-described problems, and the object of the present invention is to use a chain conveyor when conveying a coil along a conveying line having a height difference. An object of the present invention is to provide a coil transfer system that can transfer a coil to a high altitude side and can increase a coil ascending gradient as compared with the prior art.

  In order to solve the above-described problems, the present inventor has invented the following coil conveyance system after intensive studies.

  The coil conveyance system according to the first invention is a coil conveyance system for conveying a coil formed by winding a metal strip along a conveyance line having a height difference, and a rail laid along the conveyance line; Arranged at intervals along the transfer line, and arranged between a plurality of skids on which the coils are placed and adjacent skids on the transfer line, and travels on the rail to enter the skid. A plurality of coil cars configured to be able to pass the coil between them by raising and lowering the coil cradle, and the rail has a plurality of steps at different heights so that a step is provided on the transfer line. The plurality of skids are disposed at least on the step portions of the plurality of rails, and the skids of the step portions are arranged on the skids. Characterized in that it is configured as a shared skid between possible delivery stage said coil between a lower sides of the coil car on entering the de.

  The coil transfer system according to a second aspect of the present invention is the coil transfer system according to the first aspect, wherein the presence or absence of interference is determined when reaching a position where interference can occur with the skid during traveling. It is comprised so that only the operation | movement which raises / lowers may be performed.

  The coil conveyance system according to a third aspect of the present invention is the first or second aspect, wherein the coil conveyance distance (mm) in the horizontal direction of the coil conveyed by the plurality of coil cars is the coil conveyance height (mm) in the vertical direction. The coil ascending gradient, which is a value divided by ## EQU2 ## is configured to be 100/1000 or more.

  According to a fourth aspect of the present invention, there is provided the coil transfer system according to any one of the first to third aspects of the invention, wherein the plurality of steps of the rails are arranged such that the coil cars on both sides of the upper and lower steps entering the inter-step shared skid are between the steps. It is laid at least to a position where the coil can be placed on a common skid.

  The coil transfer system according to a fifth aspect of the present invention is the coil transfer system according to any one of the first to fourth aspects of the present invention, wherein the transfer line has a ground surface height from a downcoiler on the exit side of the rolling line that is lower than the ground surface height. The coil is provided so as to be conveyed.

  According to the first to fifth inventions, when the coil is conveyed by the coil car, it is possible to simultaneously perform the traveling operation between the plurality of skids and the lifting operation of the coil cradle. For this reason, when the coil is transported by the coil car from the entrance skid to the exit skid, a high coil climb gradient is realized while suppressing an increase in the transport cycle time required for performing a series of operations. It becomes possible to improve the conveyance capacity of the coil. Further, it is possible to increase the coil ascending gradient without causing a problem such as an increase in load on the chain accompanying an increase in the coil ascending gradient, which occurs when a chain conveyor is used. Moreover, since it is possible to increase the coil ascending gradient as compared with the conventional case, the horizontal length of the equipment necessary for raising the constant height coil can be reduced as compared with the conventional technique. The overall size can be reduced, the area to be dug down can be reduced, and the area of the building can be saved, thereby reducing the equipment cost and the construction cost.

  In addition, according to the first to fifth inventions, since the rails on which the coil car travels are configured as a plurality of rails laid at different heights, the coils are compared with the case of a single rail. It becomes possible to shorten the distance from the rail of the coil car to be conveyed to the high altitude side to the coil cradle. For this reason, the center of gravity position of the coil car in the vertical direction approaches the rail, and accordingly, the traveling operation of the coil car and the lifting operation of the coil cradle can be stabilized, leading to instability of the operation of the coil car. It is possible to increase the amount of coil rise per coil car and realize a high coil rise gradient.

  Further, according to the first to fifth inventions, since the inter-stage shared skid is arranged in the step portion of the plurality of rails, between the upper and lower coil cars traveling on the plurality of rails. The coil can be transferred smoothly as in the case of using a normal skid.

  According to the second invention, when the coil is transported by the coil car, it is possible to prevent a collision between the coil on the coil cradle and the skid and a collision between the coil cradle and the coil on the skid. It becomes possible.

It is a top view which shows typically the conveyance line in which the coil conveyance system which concerns on this invention is used. It is a side view which shows typically the structure of a part of conveyance line where the coil conveyance system which concerns on this invention is used. It is a front view which shows the structure of a normal skid. It is a front view which shows the structure of the interstage shared skid. It is a side view for demonstrating operation | movement of the coil conveyance system which concerns on this invention. It is another side view for demonstrating operation | movement of the coil conveyance system which concerns on this invention. It is the schematic diagram which showed typically the path | route which a coil cradle passes in performing a series of operation | movement which conveys a coil with a coil car.

  Hereinafter, as a form for carrying out the present invention, a coil conveyance system for conveying a coil along a conveyance line will be described in detail with reference to the drawings.

  FIG. 1 is a plan view schematically showing a transfer line 5 in which the coil transfer system 1 according to the present invention is used, and FIG. 2 schematically shows a second transfer line 7 constituting a part of the transfer line 5. FIG.

  A coil conveyance system 1 according to the present invention is used to convey a coil 2 formed by winding a metal band such as a steel band, and enters and exits a conveyance line 5 that is a conveyance path of the coil 2. Used when there is a height difference between the two sides. In this embodiment, the coil 2 wound by the mandrels 13 of the two downcoilers 11 provided on the exit side of the rolling line 3 is transported from the winding position, which is lower than the ground surface GL, to the ground surface GL. A case will be described as an example.

  The conveyance line 5 from the rolling line 3 to the ground surface GL includes a linear first conveyance line 6 provided in a direction orthogonal to the rolling line 3 and the first conveyance on the exit side of the first conveyance line 6. A linear second transfer line 7 provided in a direction orthogonal to the line 6 and extending to the ground surface GL, and a direction orthogonal to the second transfer line 7 on the output side of the second transfer line 7 And a third transport line 8 provided in The coil transfer system 1 according to the present invention is used in the second transfer line 7 in this embodiment.

  The first transport line 6 is provided to transport the coil 2 extracted from the mandrel 13 of the downcoiler 11 to the second transport line 7. The first transport line 6 has a rail 15 laid along the first transport line 6, and a coil car 30 for transporting the coil 2 is disposed on the rail 15. The first transport line 6 is provided with a skid 20 for temporarily placing the coil 2 at the intersection 7 a with the second transport line 7.

  Moreover, the 3rd conveyance line 8 is provided with the conveyance apparatus which consists of a chain conveyor etc. along this 3rd conveyance line 8, and the coil 2 conveyed to the 2nd conveyance line 7 exit side is this 3rd conveyance line. It is transported to another processing facility such as a coil storage yard or pickling facility by a transport device provided in the transport line 8.

  In the present embodiment, the coil transfer system 1 according to the present invention includes a rail 15 laid along the second transfer line 7, and a plurality of skids 20 arranged at intervals along the second transfer line 7. And a plurality of coil cars 30 arranged for each of the skids 20 adjacent to each other in the second transport line 7.

  In the present embodiment, the rails 15 are laid across a plurality of steps at different heights so that steps are provided in the second transport line 7. The plurality of rails 15 are laid so that their heights increase toward the exit side of the second transport line 7. In the present embodiment, the multi-stage rail 15 is laid for three stages. The plurality of stages of rails 15 are laid at intervals in the vertical direction so that end portions 15a of adjacent ones in the second transport line 7 overlap in a plan view. The plurality of rails 15 are supported by a pair of rail frames 25 provided on the skid 20 and a column member 19 erected from the floor 9.

  The skid 20 is disposed at least on the step portion 16 of the plurality of steps of rails 15. In this embodiment, the skid 20 is disposed in addition to the step portions 16 of the multi-stage rails 15, and more specifically, two skids 20 are disposed in total in the step portions 16 of the three-stage rails 15. A total of six are arranged at the locations. The configuration of the skid 20 is different depending on whether the skid 20 is disposed on the stepped portion 16 of the plurality of rails 15 or not. In the following, the skid 20 disposed in the stepped portion 16 of the multi-stage rail 15 will be described as an interstage shared skid 20A, and the other skids 20 will be described as normal skids 20B, and the interstage shared skids 20A and normal A configuration common to the skid 20B will be described as the skid 20.

  FIG. 3 is a front view showing the configuration of the normal skid 20B, and FIG. 4 is a front view showing the configuration of the interstage shared skid 20A.

  The skid 20 includes a pair of strut frames 21 erected with a rail 15 laid along the conveyance line 5 therebetween, and a pair of skid frames 23 projecting inward from the pair of strut frames 21. ing. Further, the skid 20 includes one or two pairs of rail frames 25 projecting inwardly from the pair of support frames 21 below the pair of skid frames 23. In the present embodiment, the normal skid 20B includes a pair of rail frames 25, and the inter-stage skid 20A includes two pairs of rail frames 25.

  The support frame 21, the skid frame 23, and the rail frame 25 are made of a frame member 26 such as H-shaped steel. The support frame 21 is configured by combining the frame members 26 in the form of a frame in the vertical and horizontal directions, and the lower end 21a thereof is fixed to the floor 9 via anchor bolts or the like. The pair of rail frames 25 is configured such that a rail 15 is laid on the upper surface thereof and supports the rail 15.

  The pair of skid frames 23 protrudes inward horizontally from the pair of support frames 21 and is provided between the inner end portions 23a with an interval that allows a coil cradle 35 of a coil car 30 to be described later to enter. It has been. The inner end portions 23a of the pair of skid frames 23 have a pair of receiving surfaces 23b on their upper surfaces. The pair of receiving surfaces 23b are provided so as to be inclined downward toward the inside of the pair of skid frames 23. The coil 2 is mounted so as to be supported on the coil mounting portion 23c with the pair of receiving surfaces 23b of the pair of skid frames 23 as coil mounting portions 23c. It is placed in a so-called down-end state that is substantially horizontal.

  In the present embodiment, the plurality of skids 20 arranged along the second transport line 7 are on the exit side of the second transport line 7 except for the skid 20 located at the intersection 7a with the first transport line 6. The height of the coil mounting portion 23c is gradually increased as it goes to.

  The plurality of coil cars 30 can travel between the adjacent skids 20 as respective travel routes. The coil car 30 includes a bogie frame 31 that can run on the rail 15 and a coil cradle 35 that can be moved up and down with respect to the bogie frame 31.

  A plurality of traveling wheels 32 are rotatably attached to both sides of the carriage frame 31. The carriage frame 31 is driven by rotating an axle (not shown) connected to the traveling wheels 32 by a drive motor or the like. It is supposed that it can run on the rail 15 on its own. The carriage frame 31 is provided with an elevating cylinder 33 made of a hydraulic cylinder or the like at the center thereof, and a coil cradle 35 is provided at the tip of the rod of the elevating cylinder 33.

  The coil cradle 35 can be moved up and down as the lifting cylinder 33 moves up and down. The coil cradle 35 has a pair of receiving surfaces 35a on its upper surface. The pair of receiving surfaces 35a are provided so as to incline downward from the outside toward the inside, and the pair of receiving surfaces 35a form a valley that forms a concave shape along the traveling direction of the carriage frame 31. . The coil 2 is placed and conveyed so as to be supported on the pair of receiving surfaces 35a in a so-called down-end state.

  The coil car 30 configured in this manner moves up and down the coil cradle 35 after entering between the pair of support frames 21 inside the skid 20, so that the coil cradle 35 and the pair of skid frames 23 of the skid 20 It is comprised so that the coil 2 can be delivered between.

  Here, the inter-stage shared skid 20A among the plurality of skids 20 is configured to be able to transfer the coil 2 to and from the upper and lower coil cars 30 entering the inter-stage shared skid 20A. In order to realize such a configuration, the plurality of rails 15 are laid at least to a position where the coil cars 30 on both sides of the upper and lower stages entering the inter-stage common skid 20A can place the coil 2 on the inter-stage common skid 20A. Has been.

  Next, operation | movement of the coil conveyance system 1 which concerns on this invention is demonstrated with the motion of the coil 2 in the 1st conveyance line 6 or the 3rd conveyance line 8. FIG.

  In the first conveyance line 6, the coil carrier 35 is raised so that the coil 2 wound by the mandrel 13 of the downcoiler 11 is supported by the coil carrier 35 of the coil car 30, and then the coil car 30 is moved to the first conveyance line 6. It is made to run along the rail 15 and is extracted from the mandrel 13. Subsequently, after the coil car 30 has traveled to the exit side of the first transport line 6, the coil 2 on the coil cradle 35 is transferred to the skid 20 at the intersection 7 a of the first transport line 6 and the second transport line 7. . At this time, the coil 2 is turned by turning the coil cradle 35 or using a coil lifter so that the axial hole 2a of the coil 2 and the extending direction of the second transfer line 7 are substantially parallel to each other. To the skid 20 at the intersection 7a.

  5 and 6 are side views for explaining the operation of the coil transfer system 1 according to the present invention.

  In the second transfer line 7 in which the coil transfer system 1 according to the present invention is used, in the present embodiment, the coil car 30 having the travel path between the three entrance skids 20 and the travel path between the other skids 20 are used. The operation of the coil car 30 is different. Each coil car 30 is configured to perform a series of operations described below under the control of a process computer or the like (not shown). In the following, the position of the coil car 30 before and after the end of the series of operations executed by the coil car 30 will be described as a standby position.

  The coil car 30 having the traveling path between the three skids 20 on the entry side performs the following series of operations. First, the coil car 30 is caused to enter the skid 20 on the entry side from the standby position of the coil car 30. Subsequently, as shown in FIG. 5A, the coil cradle 35 is raised and the coil 2 placed on the entrance skid 20 is received by the coil cradle 35. Subsequently, as shown in FIG. 5B, the coil car 30 is caused to travel along the rail 15 until it enters the skid 20 on the exit side of the second conveyance line 7. During this traveling operation, the coil cradle 35 of the coil car 30 is not raised. Subsequently, as shown in FIG. 6A, the coil cradle 35 is lowered and the coil 2 is delivered to the skid 20 on the exit side. Subsequently, as illustrated in FIG. 6B, after the coil car 30 is traveled to the entry side of the second conveyance line 7 until the coil car 30 is positioned on the standby position of the coil car 30, a series of operations performed by the coil car 30 is completed. .

  The coil car 30 having the other skits as a travel route performs the following series of operations. FIG. 7A is a schematic diagram schematically showing a path through which the coil cradle 35 passes in performing a series of operations for transporting the coil 2 by the coil car 30. It should be noted that the interference position shown in FIG. 7 refers to interference with the skid 20 when the coil car 30 is to enter the skid 20 on the entrance side or the skid 20 on the exit side of the second transport line 7. It means the position where can occur. Interference here may occur when, for example, the coil car 30 having the coil 2 placed on the coil cradle 35 is moved into the outlet skid 20 and the amount of rise of the coil cradle 35 is increased. This is a case where there is an interference between the skid 20 on the exit side and the coil 2 of the coil car 30 because of insufficient. In addition, when the coil car 30 is about to enter the entrance side skid 20 on which the coil 2 is placed, the amount of lowering of the coil cradle 35 is insufficient. This refers to a case where interference occurs between the coil 2 of the skid 20 and the coil cradle 35 of the coil car 30.

  First, each coil car 30 executes an operation S <b> 1 for causing the coil car 30 to travel and enter the skid 20 on the entry side from the standby position of the coil car 30. Subsequently, as shown in FIGS. 5A and 7A, the coil receiving table 35 is raised and the coil mounted on the coil mounting portion 23 c of the skid 20 on the entry side of the second transport line 7. 2 is received by the coil cradle 35.

  Subsequently, as shown in FIGS. 5B and 7A, after the coil 2 of the entrance skid 20 is received by the coil cradle 35, the traveling interference with the exit skid 20 is caused. The operation S3 is performed to travel to the interference position where the occurrence of the interference can occur. At this time, the operation S3-1 is performed such that the coil cradle 35 is raised while the coil car 30 is traveling.

  In the operation S <b> 3, after the end of the operation, the amount of ascending of the coil cradle 35 is insufficient, and thus interference may occur between the coil 2 on the coil cradle 35 and the exit-side skid 20. In order to solve this, when the coil car 30 travels to the interference position, it is determined whether or not there is interference with the skid 20, and when it is determined that interference occurs, the coil cradle 35 is moved up and down at the interference position. It is preferable to execute only S4. Incidentally, as shown in FIG. 7B, before the operation S3-1 is executed or in the middle of the operation S3-1, the operation S3-2 that only raises the coil cradle 35 to some extent is executed. As shown in (c), only the traveling speed of the coil car 30 is changed, and the operation S3-3 for raising the coil cradle 35 while the coil car 30 is traveling at a high traveling speed and the coil car 30 traveling at a slow traveling speed are performed. It is also possible to perform the operation S3-4 for raising the coil cradle 35 while making the coil cradle 35 move up and down so that the lifting operation S4 of the coil cradle 35 can be omitted. By these operations, the rising amount of the coil cradle 35 is adjusted so that the coil car 30 can enter the skid 20 on the exit side.

  Subsequently, an operation S5 for causing the coil car 30 to travel and enter the skid 20 is performed. Subsequently, as shown in FIGS. 6A and 7A, an operation S <b> 6 is performed in which the coil cradle 35 is lowered and the coil 2 is delivered to the coil mounting portion 23 c of the outgoing skid 20.

  Subsequently, as shown in FIGS. 6B and 7A, after the coil 2 of the coil receiving base 35 is transferred to the outgoing skid 20, there is an interference caused by traveling with the incoming skid 20. An operation S7 is performed to travel to a possible interference position. At this time, the operation S7-1 is performed such that the coil cradle 35 is lowered while the coil car 30 is traveling.

  In operation S <b> 7, since the amount of lowering of the coil cradle 35 is insufficient after the end of the operation S <b> 7, the gap between the coil 2 placed on the coil placement portion 23 c of the entrance skid 20 and the coil cradle 35 is not reached. May cause interference. In order to solve this, as in the case of the operation S3, as shown in FIG. 7A, when the coil car 30 travels to the interference position, it is determined whether or not there is interference with the skid 20, and the interference If it is determined, it is preferable to execute only the operation S8 for raising and lowering the coil cradle 35 at the interference position. Incidentally, as shown in FIGS. 7B and 7C, the operation S7-2 for lowering only the coil cradle 35 may be executed before or during the operation S7-1, Operations S7-3 and S7-4 for causing the coil car 30 to travel at different travel speeds may be executed.

  Up to this point, a series of operations performed by the coil car 30 with the travel path between the other skids 20 except for the three entrance skids 20 are performed. Thus, these coil cars 30 are configured to transport the coil 2 from the entrance-side skid 20 to the other exit-side skid 20, and between the two skids 20 during the transport of the coil 2. The coil cradle 35 is configured to move up and down while traveling.

  Each coil car 30 is configured to perform such a series of operations at substantially the same timing within almost the same time, and thereby each time a series of operations is performed, the skid on the entry side of the second conveyance line 7 is configured. The coil 2 placed on 20 is intermittently transported to the skid 20 on the exit side of the second transport line 7 adjacent thereto. And the coil 2 conveyed from the 1st conveyance line 6 to the 2nd conveyance line 7 entrance side repeats such a series of operation | movement, and each coil car 30 repeats such a series of operation | movement from a winding position with the downcoiler 11 to a ground surface. It will be conveyed to the GL height.

  Incidentally, the coil 2 transported to the skid 20 located on the most exit side of the second transport line 7 is transferred to the transport device provided in the third transport line 8 by a coil lifter or the like, and then the coil storage yard. Or other processing equipment such as pickling equipment.

  In the coil conveyance system 1 according to the present embodiment, as shown in FIG. 2, the coil conveyance distance L0 (mm) in the horizontal direction of the coil 2 conveyed by the plurality of coil cars 30 is set to the coil conveyance height h0 in the vertical direction. The coil ascending gradient, which is a value divided by (mm), is configured to be 100/1000 or more. As shown in FIG. 7, the value obtained by dividing the horizontal distance L1 between the center positions of the skids 20 adjacent in the second transport line 7 by the height difference h1 between these coil mounting portions 23c is 100. / 1000 or more.

  According to the coil conveyance system 1 according to the present invention, when the coil 2 is conveyed by the coil car 30, the traveling operation between the skids 20 and the raising / lowering operation of the coil cradle 35 can be performed simultaneously. For this reason, when the coil 2 is transported by the coil car 30 from the entrance side skid 20 to the exit side skid 20, it is high while suppressing an increase in the transport cycle time required for the coil car 30 to perform a series of operations. It is possible to realize a coil ascending gradient and to increase the conveying capability of the coil 2.

  Moreover, according to the coil conveyance system 1 which concerns on this invention, it is possible to convey along a conveyance line, raising the coil 2 without using a chain conveyor. For this reason, it is possible to increase the coil ascending gradient without causing a problem such as an increase in load on the chain accompanying an increase in the coil ascending gradient that occurs when a chain conveyor is used.

  Moreover, according to the coil conveyance system 1 which concerns on this invention, since it is possible to increase a coil raise gradient conventionally, the horizontal direction length of the installation required in order to raise the fixed height coil 2 is sufficient. Can be reduced as compared with the prior art. As a result, it is possible to reduce the size of the entire facility, to reduce the ground excavation range, and to save the space of the building, thereby reducing the facility cost and the construction cost.

  Moreover, in the coil conveyance system 1 which concerns on this invention, the rail 15 which the coil car 30 of the 2nd conveyance line 7 travels is comprised as the multistage rail 15 laid in different height. This makes it possible to shorten the distance from the rail 15 of the coil car 30 that is intended to transport the coil 2 to the high altitude side to the coil cradle 35 as compared with the case of the one-step rail 15. For this reason, since the distance from the rail 15 to the coil cradle 35 of the coil car 30 can be shortened, the position of the center of gravity in the vertical direction of the coil car 30 approaches the rail 15, and accordingly, the running operation of the coil car 30 and It is possible to stabilize the lifting operation of the coil cradle 35. In addition, since the traveling operation of the coil car 30 and the raising / lowering operation of the coil cradle 35 can be stabilized, the amount of increase in the coil per one coil car 30 can be reduced without causing instability of the operation of the coil car 30. It is possible to achieve a high coil climb gradient.

  Moreover, according to the coil conveyance system 1 which concerns on this invention, since it is supposed that the interstage shared skid 20A is arrange | positioned in the level | step-difference part 16 of the multistage rail 15, the upper and lower stage both sides which drive | work on the multistage rail 15 are used. Transfer of the coil 2 to and from the coil car 30 can be performed smoothly as in the case of using the normal skid 20B.

  Moreover, according to the coil conveyance system 1 which concerns on this invention, since the 2nd conveyance line 7 for raising the coil 2 can be made into linear form, the other equipment which exists in the direction orthogonal to the 2nd conveyance line 7 It is possible to obtain the above-described effects while suppressing interference.

  Moreover, according to the coil conveyance system 1 which concerns on this embodiment, when the coil car 30 drive | works to an interference position, the presence or absence of interference with the skid 20 is judged, and when it judges that it interferes, the coil base 35 Only the operations S4 and S8 for raising and lowering are performed. For this reason, when the coil 2 is transported by the coil car 30, collision between the coil 2 on the coil cradle 35 and the skid 20 or collision between the coil cradle 35 and the coil 2 on the skid 20 is prevented. It becomes possible to prevent.

  As mentioned above, although the example of embodiment of this invention was demonstrated in detail, all the embodiment mentioned above showed only the example of actualization in implementing this invention, and these are the technical aspects of this invention. The range should not be construed as limiting.

  For example, the conveyance line in which the coil conveyance system 1 according to the present invention is used is not limited to the one that conveys the coil 2 wound up by the mandrel 13 of the downcoiler 11 to the ground surface GL.

  Hereinafter, the effects of the present invention will be further described with reference to examples. In this example, it was decided to check whether the coil ascending gradient could be 100/1000 or more using the coil transfer system 1 in the second transfer line 7 as shown in FIGS.

  In this example, the coil 2 having a maximum weight of 27 TON, an outer diameter of 1150 to 2300 mmφ, and a plate width of 550 to 1580 mm was used. In addition, a coil car 30 having a maximum horizontal traveling speed of 40 mpm (meter per minutes) and a maximum lifting speed of the coil cradle 35 of 4.5 mpm (meter per minutes) was used. Each coil car 30 is set so that the coil cradle 35 passes through a route as shown in FIG. Further, as shown in FIG. 7A, the horizontal distance L1 between the center positions of the skids 20 adjacent to each other in the second transport line 7 is set to 7.2 m, and the height difference between these coil placement portions 23c. h1 was set to 1.1 m, and h1 / L1 was set to 152/1000. This means that the coil rising gradient represented by h0 / L0 is 152/1000 as shown in FIG.

  As a result, it was possible to carry out the work of transferring the coil 2 from the first transfer line 6 to the second transfer line 8 under the condition that the transfer cycle time was 55 seconds.

DESCRIPTION OF SYMBOLS 1: Coil conveyance system 2: Coil 3: Rolling line 6: 1st conveyance line 7: 2nd conveyance line 8: 3rd conveyance line 11: Downcoiler 13: Mandrel 15: Rail 16: Step part 19: Strut member 20: Skid 20A: Interstage skid 20B: Normal skid 21: Post frame 23: Skid frame 23c: Coil mounting part 25: Rail frame 30: Coil car 31: Car frame 32: Traveling wheel 33: Lifting cylinder 35: Coil pedestal GL: Ground surface

Claims (5)

In a coil conveyance system for conveying a coil in which a metal band is wound along a conveyance line having a height difference,
Rails laid along the transfer line;
A plurality of skids arranged at intervals along the transfer line, on which the coil is mounted;
A plurality of skids arranged between adjacent skids in the transport line, configured to be able to pass the coil between them by moving up and down the coil cradle after running on the rail and entering the skid. With a coil car,
The rail is laid across a plurality of steps at different heights so that a step is provided in the transport line,
The plurality of skids are arranged at least in the step portions of the plurality of rails, and the step can pass the coil between the upper and lower coil cars in which the skids in the step portions enter the skids. Coil transfer system, characterized by being configured as a shared skid. The plurality of coil cars determine whether or not there is interference when traveling to a position where interference can occur with the skid, and when it is determined that interference occurs, only the operation of raising and lowering the coil cradle is executed. It is comprised by these. The coil conveyance system of Claim 1 characterized by the above-mentioned. A coil ascending gradient, which is a value obtained by dividing a coil conveying distance (mm) in the horizontal direction of the coil conveyed by the plurality of coil cars by a coil conveying height (mm) in the vertical direction, is configured to be 100/1000 or more. The coil conveyance system according to claim 1 or 2, wherein 2. The plurality of stages of rails are laid at least up to a position where the coil cars on both sides of the upper and lower stages entering the inter-stage common skid can be placed on the inter-stage common skid. 4. The coil transfer system according to any one of items 3. The said conveyance line is provided so that the said coil may be conveyed from the downcoiler by the side of the rolling line in the position lower than a ground surface height to the said ground surface height. The coil transfer system according to item 1.

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