JPH06514U - Hot rolled coil holder - Google Patents

Abstract

(57) [Abstract] [Objective] To obtain a coil holder having a simple structure in which the deformation of the coil can be corrected by the coil pressing means driven by the weight of the coil. [Structure] The coil placing part 3 is lowered by the weight of the coil A placed on the coil placing part 3 mounted on the base 2, and the coil receiving part 3 is lowered by the lowering of the coil placing part 3. Is pressed down to rotate about the pin 6 as a fulcrum, and the coil pressing side branch arm portions 5b, 5b are moved to the pin 6
Is used as a fulcrum, and the coil pressing portions 7 and 7 attached to the tip of the branch arm portion 5b press the peripheral side surfaces of the coil A from both sides, so that the coil A can be prevented from being deformed. is doing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hot-rolling coil stand for preventing coil deformation of a hot coil of high carbon steel (0.30 wt% ≦ C) (simply referred to as coil or hot-rolling coil), for example.

[0002]

[Prior art]

Conventionally, for example, when winding a coil of high carbon steel with a down coiler, it is wound in the untransformed temperature range of Ar ₃ points or higher in order to improve pipe-making properties at the pipe factory. Depending on the plate thickness, the coil may be deformed as shown in FIGS. 4 and 5 due to the weight of the coil.

As a method for preventing the coil deformation of the hot-rolled coil in which the coil deformation has occurred, a method called a standing method, a fixed deformation table method, or a two-stage stacking method has been heretofore described, for example, as follows. Is used.

Standing-up method: This method uses a special tool to temporarily remove the hot-rolled coil from the conveyor while the hot-rolled coil is being transferred to the coil storage area by using a conveyor, and then, as shown in FIG. This is a method of preventing the coil A from being deformed by vertically placing the shaft core portion a so that it is vertical.

Fixed deformation base system: In this system, as shown in FIGS. 4 and 5, a pair of support metal fittings 11 are arranged on the ground surface at a predetermined interval, and the coil A is placed on them. By doing so, the deformation of the coil A is prevented.

Two-stage stacking method: a method of stacking a plurality of hot-rolled coils in two steps, for example, as shown in FIG. 6, straddling over the coils A and B placed on the lower stage, and the upper stage side thereof. By stacking the coils C on top of each other, the deformation of the coils is prevented.

[0007]

[Problems to be solved by the device]

 However, according to the above-mentioned standing method, after cooling the coil A (after a lapse of about 1 to 2 days), the coil A is returned to the transfer conveyor and placed again in the designated coil storage place. Therefore, in this method, the number of processing steps is increased, and moreover, heat is accumulated in the inner diameter portion of the coil during cooling, which requires cooling time and requires a large space for temporary storage.

According to the fixed deformation table method, since the outer diameter of the coil is usually not constant, for example, when the coil diameter becomes large, as shown in FIG. There is a risk that the side parts of the will protrude and become laterally wide, and will be deformed in the direction of the arrow. Therefore, it is difficult to prevent the deformation of the coil A depending on the coil diameter.

On the contrary, when the coil A having a smaller coil diameter than the space between the support fittings 11 and 11 is placed, the peripheral body of the coil A is not supported by the support fitting 11 and is not supported on the ground surface. As a result, the coil may be deformed in the direction of the arrow as shown in FIG. Therefore, similar to the above, depending on the coil diameter, it is difficult to prevent the deformation of the coil A.

Furthermore, in the case of the two-stage stacking method, unless the coil diameters of the first-stage coils are the same, for example, as shown in FIG. 6, the first-stage coils A and B have left and right diameters. If it is significantly different, the load applied to the coils A and B by the coil C loaded in the second stage is abnormally large compared to the coil A side, as shown by the arrow in the drawing. Therefore, there is a risk that the coil C will be deformed, and there is a risk that load collapse will occur in this method.

In addition to this, as means for solving the drawbacks of the above-mentioned methods (1) to (3), there are coil cradle described in, for example, Japanese Utility Model Publication No. 55-165612 and Japanese Utility Model Publication No. 1-139921. There is disclosed a means for preventing deformation of the coil by pressing the peripheral body portion of the coil placed on the support base from the left and right by a drive source such as a hydraulic cylinder.

However, since the above-mentioned coil pedestal uses a hydraulic cylinder as a drive source for driving the pressing means for preventing the deformation of the coil, it is structurally complicated and only has a large number of parts. In addition, maintenance is complicated, and if a trouble occurs in the drive source, the coil deformation prevention process must be interrupted.

From such an actual situation, it has been expected to develop a coil holder which has a simple structure, can reduce the number of parts, is easy to maintain, and has few troubles.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a hot-rolled coil holder that can efficiently prevent coil deformation with a simple structure.

[0015]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, there is a coil installed on a ground surface and a coil having a coil receiving surface at the upper part thereof which is vertically movable and disposed substantially at the center of the base. A coil receiving side branch arm portion having a mounting portion and a pair of movable arms pivotally supported on both side portions of the base, and each of the above movable arms has a tip end that is locked to a lower portion of the coil mounting portion. And a coil retainer having a coil retainer at the tip, which is connected to the coil receiving side branch arm with the shaft fulcrum as a boundary and presses the coil from the side surface of the coil placed on the coil mount. It is characterized in that it is composed of a side branch arm part.

[0016]

[Action]

 According to the above configuration, when the coil is placed on the coil placing portion, the coil placing portion is lowered due to its own weight. When this coil mounting portion is lowered, at the same time, the coil receiving side branch arm portion that is locked to the lower portion of the coil mounting portion is pushed down. When the coil receiving side branch arm portion is pushed down, the coil holding side branch arm portion on the side that presses the coil surrounding body rotates about an axis fulcrum, and the coil holding portion at the tip of the coil holding side branch arm portion Press strongly from both sides inward. By this pressure contact, the peripheral body of the coil is strongly pressed and deformation of the coil is prevented.

After the coil is cooled to a predetermined temperature or less, if it is removed from the coil mounting part, the weight of the coil is removed from the coil mounting part, and the center of gravity of the coil holding side branch arm part is removed. Is located outside the pin, the coil holding side branch arm portion opens to the left and right, and the rotation moment at this time raises the coil mounting portion and puts it in a standby state. When the next coil is mounted on the coil receiving surface of the coil mounting portion, the deformation of the coil is prevented by the same procedure as above.

[0018]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 are views showing a hot rolling coil holder according to an embodiment of the present invention. FIG. 1 is a perspective view when a coil is placed, and FIG. 2 is a case where the coil is removed. FIG.

In the drawings, reference numeral 1 is a coil holder, and a coil holder 3 is mounted on a base 2 of the coil holder 1 so as to be vertically movable at a substantially central portion thereof. The upper portion of the placing portion 3 is a coil receiving surface 4 having a concave curved surface shape that substantially matches the peripheral body shape of the coil.

A pair of movable arms 5 are axially supported by pins 6 on both sides of the base 2, and the coil holding side branch arm portions 5 a and the coil receiving portions are bounded by the pins 6. For example, as shown in the drawing, it is formed in a dogleg shape so as to be divided into the side branch arm portion 5b.

Reference numeral 7 denotes a coil holding portion attached to the tip of the coil holding side branch arm portion 5 a, and like the coil receiving surface 4 of the coil mounting portion 3, the surface that comes into contact with the coil is the coil A. It is formed in a concave curved surface so as to substantially match the peripheral body. Reference numeral 8 is a stopper that regulates the upper limit of the coil mounting portion 3.

Next, the operation of the above configuration will be described. As shown in FIG. 1, when the coil A is mounted on the coil receiving surface 4 of the coil mounting portion 3 on the coil mounting base 1 shown in FIG. 2, the coil mounting portion 3 is moved by its own weight. By descending and pushing down the pair of coil receiving side branch arms 5b whose ends are locked to the lower part of the coil mounting portion 3, the above-mentioned pairs are respectively set with the pin 6 which is a shaft fulcrum as a fulcrum. The coil holding side branch arm portion 5a, which is continuous with each coil receiving side branch arm portion 5b, rotates.

That is, the pair of left coil receiving side branch arm portions 5b shown in FIG. 2 rotates clockwise around the pin 6 as a fulcrum, and the right coil receiving side branch arm portion 5b rotates around the pin 6 as a fulcrum. Rotate clockwise. When the coil receiving side branch arm portions 5b, 5b forming the pair are rotated as described above, the coil holding side branch arm portion 5a has the left side clockwise and the right side counterclockwise. It will turn to.

In this way, when the coil mounting portion 3 descends due to the weight of the coil A, the coil receiving side branch arm portion 5a holds the coil A from the left and right as shown in FIG. A pressing force will be applied to. If this state is continued until the coil A is cooled to a certain extent, the pressing force prevents the coil A from being deformed.

Then, after the coil A, which is prevented from being deformed, is removed from the coil holder 1 by an appropriate means, another coil A is newly set on the coil receiving surface 4, and the procedure similar to the above is performed. Coil deformation during the cooling process is prevented.

In the above configuration, if the length of the coil holding side branch arm portion 5a and the length of the coil receiving side branch arm portion 5b are desirably approximately the same size, the coil holding side branch arm 5a is pinned. When the coil 6 is rotated with the fulcrum as a fulcrum, the pressing force from the side against the side surface of the peripheral body of the coil A can be increased, which is effective in preventing coil deformation.

However, in this case, since the descending amount (sinking amount) of the coil mounting portion 3 becomes large, in consideration of this point, the height of the base 2 or the like may be set to be large. It goes without saying that consideration is necessary.

As is apparent from the above-described embodiment, in the coil holder according to the present invention, the coil pressing portion for preventing the deformation of the coil is driven by the weight of the coil itself, and as in the conventional case. Since there is no need to use another drive means such as a hydraulic cylinder, the structure of the entire coil stand is simplified, maintenance is easy, and there are few troubles such as breakdowns.

[0029]

[Effect of device]

 As described above, according to the present invention, each component of the coil holder is operated by using the own weight of the hot coil to be cooled without using another drive source such as a hydraulic cylinder. Since the coil is prevented from being deformed, the structure is simplified, the number of parts can be reduced, and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a coil holder according to an embodiment of the present invention, particularly when a coil is mounted.

FIG. 2 is a perspective view of a coil holder according to an embodiment of the present invention in which no coil is placed.

FIG. 3 is a view for explaining a conventional coil standing system.

FIG. 4 is a diagram for explaining a conventional fixed-deformation table system for a coil.

FIG. 5 is a diagram for explaining a conventional fixed-deformation table system for coils.

FIG. 6 is a diagram for explaining a conventional two-stage stacking method of coils.

[Explanation of symbols]

 1 Coil holder 2 Base 3 Coil mounting part 4 Coil receiving surface 5a Coil holding side branch arm part 5b Coil receiving side branch arm 5 Movable arm 6 pin 7 Coil holding part

Claims (1)

[Scope of utility model registration request] 1. A base mounted on a ground plane, a coil mounting portion which is vertically movable in a substantially central portion of the base, and has an upper portion serving as a coil receiving surface, and the base. A pair of movable arms pivotally supported on both sides are provided, and each movable arm has a coil receiving side branch arm portion whose front end is locked to a lower portion of the coil mounting portion, and the coil receiving side branch arm portion and the shaft. A coil holding side branch arm portion having a coil holding portion at the tip which is continuously provided with a fulcrum as a boundary and which pushes the coil from the peripheral side surface of the coil placed on the coil placing portion. Characteristic hot rolled coil holder.