JP2005226293A - Floating body connecting bridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floating body connecting bridge capable of reasonably following the oscillation of a floating body, suppressing the occurrence of a noise or a different sound with reduced abrasion of a bearing slide section and facilitating the machining to have a supporting structure at a low cost. <P>SOLUTION: The floating body connecting bridge 10 is made to support at least one end section by the floating body 1 capable of being oscillated in the horizontal direction and in the vertical direction and is made to support the other end section by another floating body or an oscillating fixed body 2. The floating body connecting bridge is equipped with a connecting bridge body 12 extended in the horizontal direction by connecting one end section to the other end section and enabling a person or a vehicle to pass through thereon, a pivot connecting device 20 connecting one end section and the other end section of the connecting bridge body to the floating body or the fixed body with a vertical shaft as the center in a rotatable manner and in a vertically movable manner and two pairs of slide supporting devices 30 respectively providing a pair to one end section and the other end section movably supporting one end section and the other end section by the floating body or the fixed body in the horizontal direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a floating connecting bridge that is built between a floating body and a quay or between floating bodies so that a person or a vehicle can pass therethrough.

  Conventional floating connecting bridges are configured to support an elongated rectangular integrated connecting bridge at a total of four points of two hinges provided on the quay and two slide shoes provided on the floating body side. . However, in such a conventional connecting bridge for floating bodies, it is not possible to avoid the three-point support in which one of the slide shoes is lifted when the floating body is rolling. There was a point.

In order to solve this problem, Patent Document 1 is disclosed.
The “connecting bridge for floating piers and the load reducing device for connecting bridges” of Patent Document 1 is to prevent the slide shoe from being lifted even if the floating body is shaken. As shown in FIGS. In the floating bridge connecting bridge G installed between the E side and the floating body F side, the connecting bridge G is arranged in a plurality of triangular blocks A, B, C having vertices or bases on the quay E side and the floating body F side. The triangular blocks A, B, and C are combined so that the apexes and the bases are adjacent to each other, and a spherical bush that can rotate and tilt is provided at the apex 51 of each triangular block A, B, and C. , A rotatable bush is provided on the bottom side 52 of each triangular block A, B, C.
In this figure, H is a hinge, I is a slope, and S is a slide shoe.

Japanese Patent Application Laid-Open No. 7-18628, “Floating Pier Connecting Bridge and Connecting Bridge Load Reduction Device”

When the floating body rolls (rolls), the spherical bush supporting the plurality of triangular blocks A, B, and C is tilted and the floating side of the connecting bridge extends along the upper surface of the floating body. The slide shoe can be prevented from lifting up. However, the connecting bridge for floating piers in Patent Document 1 has the following problems.
(1) A spherical bush capable of rotating and tilting is provided at the apex 51 of the triangular blocks A, B, and C, and the vertical load acting on the apex 51 needs to be supported by this spherical bush. For this reason, the sliding surface of the spherical bushing is likely to be worn and the spherical bushing is difficult to lubricate, so that noise is likely to occur due to poor lubrication.
(2) When the floating body rolls (rolls) and the spherical bush supporting the plurality of triangular blocks A, B, C is inclined, gaps are formed between the plurality of triangular blocks A, B, C. Foreign matter is likely to enter this gap, and abnormal noise is likely to occur. In addition, there is a risk of pedestrians' shoe soles being pinched during rolling, which may cause falls.
(3) When the floating body pitches (pitches), the slide shoe comes into contact with each other, so that the sliding surface tends to be unevenly worn.
(4) Further, in order to prevent uneven wear and abnormal noise generation of the slide shoe, a load reducing device as illustrated in FIGS. 7A to 7C is necessary, and the structure becomes more complicated.

  The present invention has been made to solve such problems. That is, the main object of the present invention is to follow the swinging of the floating body, that is, rolling (rolling), pitching (pitching) and yawing (rotating shaking) without difficulty, and there is little wear on the support sliding part. An object of the present invention is to provide a floating bridge that can suppress the generation of noise and abnormal noise. Another object of the present invention is to provide a floating bridge having a support structure that can be easily processed and reduced in cost.

According to the present invention, at least one end is supported by a floating body that can swing horizontally and vertically, and the other end is a floating body connecting bridge supported by another floating body or a fixed body that does not swing,
A connecting bridge body that connects the one end and the other end and extends in the horizontal direction, through which a person or vehicle can pass,
A pivot connecting device for connecting one end and the other end of the connecting bridge body to a floating body or a fixed body so as to be rotatable about a vertical axis and movable up and down;
A pair of slide support devices that are provided in a pair on each of the one end portion and the other end portion with the pivot coupling device interposed therebetween, and that support the one end portion and the other end portion in a horizontal direction by a floating body or a fixed body. A floating connecting bridge is provided.

According to the configuration of the present invention, since the pivot coupling device that can rotate around the vertical axis and move up and down is provided at both ends of the connecting bridge body, the floating body pitches (pitch) or yaws (rotates). Also, it can follow the pitching and yawing reasonably by rotating and / or moving up and down around the vertical axis.
Moreover, since a pair of slide support devices are provided at both ends and both ends are supported so as to be movable in the horizontal direction, the connecting bridge body is supported at four points by the two pairs of slide support devices even if the floating body is pitched or yawed. be able to.

  According to a preferred embodiment of the present invention, the connecting bridge body is set to have a high bending rigidity that allows a person or a vehicle to pass therethrough and a low torsional rigidity that can be twisted following the rolling of the floating body.

  With this configuration, even when the floating body rolls (rolls), the connecting bridge main body is twisted following the rolling of the floating body, so that the four support portions can be prevented from rising.

  The pivot coupling device is fixed to one end or the other end of the connecting bridge main body and extends downward, and is fixed to the floating body or the fixed body so that the pivot shaft can be rotated about the axis and can be moved up and down. The pivot shaft has a diameter-enlarging spherical portion at the lower end thereof, and the shaft-body connecting member is slidable by inserting the diameter-enlarging spherical portion from above. It has a hollow cylindrical hole with a substantially equal inner diameter that extends vertically.

  With this configuration, the expanded spherical surface portion at the lower end of the pivot shaft is supported by a hollow cylindrical hole having a substantially equal inner diameter that is slidably fitted to the pivot shaft and extending in the vertical direction, thereby centering on the vertical axis of the pivot shaft. It can be connected so that it can rotate and move up and down.

  The shaft body connecting member has a hole bottom that closes the lower end of the hollow cylindrical hole, and has a lubricating oil space in which lubricating oil can be sealed between the hole bottom and the inserted enlarged diameter spherical portion.

  With this configuration, the lubricating oil (for example, grease) is sealed in the lubricating oil space between the hole bottom that closes the lower end of the hollow cylindrical hole and the inserted enlarged diameter spherical surface portion, so that the pivot shaft rotates and moves up and down. The lubricating oil can be automatically supplied to the sliding surface, the wear of the connecting sliding portion can be reduced, and the generation of noise and noise can be suppressed. In addition, since this lubricating oil is in a closed lubricating oil space between the expanded spherical surface portion, the outflow (dripping) of the lubricating oil during use can be almost eliminated, and contamination of the outside (sea surface, etc.) can be prevented, and Allows long-term holding of lubricating oil.

  The pivot shaft body has a fixed flange fixed to the horizontal lower surface of the connecting bridge body, a shear plate for fixing the fixed flange so as not to slide along the horizontal lower surface, and an upper end extending vertically through the fixed flange. Consists of a pivot shaft supported by the upper part of the connecting bridge body.

With this configuration, the pivot shaft can be separated from the fixed flange, and the whole can be cut out from a cylindrical shape equivalent to the diameter of the expanded spherical portion. Therefore, as compared with the case of being integrated with the fixed flange, the processing is easy and the cost can be reduced. Further, with this configuration, the fixing flange only needs to support a horizontal force without receiving a bending moment, so that the plate thickness around the pivot shaft penetrating portion can be reduced, and the distance between the enlarged spherical surface portion and the fixing flange can be shortened. Thereby, the bending moment acting on the pivot shaft can be reduced.
Furthermore, since the pivot shaft is supported at the fixed flange penetration and the top end, the flange penetration where the maximum bending moment acts can be made into a smooth shape with a large diameter, avoiding stress concentration and reducing the maximum stress. It can be kept low.
Further, since the fixing flange is fixed by the shear plate so as not to slide along the horizontal lower surface, it is possible to prevent a shearing force from acting on a bolt or the like for fixing the fixing flange.

According to a preferred embodiment of the present invention, the slide support device includes a cylindrical roller attached to the lower surface of the connecting bridge body and rotatable about a horizontal axis in the width direction, and a horizontal upper surface in contact with the outer peripheral surface of the cylindrical roller. And a floor plate fixed to the floating body or the fixed body.
With this configuration, even when the floating body pitches (pitch), a vertical load can be supported only by rotating the cylindrical roller on the floor plate. Therefore, the contact between the cylindrical roller and the floor plate can be maintained as it is, wear is small, and abnormal noise can be prevented.

The slide support device has a cylindrical roller attached to a floating body or a fixed body and rotatable around a horizontal axis in the width direction, and a horizontal lower surface in contact with the outer peripheral surface of the cylindrical roller. The structure which consists of a fixed baseplate may be sufficient.
Even with this configuration, when the floating body is pitched (pitched), the cylindrical roller can support the vertical load only by rotating on the floor plate. Therefore, the contact between the cylindrical roller and the floor plate can be maintained as it is, wear is small, and abnormal noise can be prevented.

As described above, the connecting bridge for floating bodies of the present invention can follow the rolling (rolling), pitching (pitch) and yawing (rotational shaking) of the floating body without difficulty and wear of the supporting sliding portion. There are few excellent effects, such as being able to suppress generation | occurrence | production of noise and unusual noise, being easy to process, and being able to reduce cost.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

FIG. 1 is an overall configuration diagram of a connecting bridge for floating bodies according to the present invention, where (A) is a plan view and (B) is a side view. As shown in this figure, the connecting bridge 10 for floating body of the present invention is supported at one end 10a on the floating body 1 that can swing in the horizontal and vertical directions by waves, channel waves, tide level differences, etc., and the other end 10b. Is supported by a fixed body 2 that does not swing, and allows a person or a vehicle to pass between them.
In addition, this invention is not limited to this example, The connection bridge for floating bodies by which both ends are supported by a different floating body may be sufficient.

The floating body 1 is a floating pier, a floating dock, or a hull that floats on a river or a bay. The floating body 1 is preferably restricted by a mooring pile, anchor block or the like (not shown) in the horizontal and vertical swinging amounts.
The fixed body 2 is preferably an intermediate fixed base that is fixed so as not to be affected by waves, channel waves, tide level differences, etc., by a quay wall provided on a river or a bay, or a fixed mooring pile.

  In FIG. 1, flaps 11 a and 11 b are pivotally attached to both end portions 10 a and 10 b of the floating body connection bridge 10 so as to be rotatable about the horizontal axis in the width direction. And the steps between the fixed body 2 and the connecting bridge 10 for floating body are eliminated, so that people and vehicles can pass easily.

  2A is a cross-sectional view taken along line AA in FIG. 1, and FIG. 2B is a cross-sectional view taken along line BB. As shown in the figure, the floating connecting bridge 10 of the present invention includes a connecting bridge main body 12, a pivot connecting device 20, two pairs of slide support devices 30, and a guide hardware 40.

The connecting bridge body 12 has a structure in which both end portions (one end portion 10a and the other end portion 10b) of the floating body connecting bridge 10 are connected and extend substantially horizontally in the horizontal direction, and a person or a vehicle can pass therethrough. Yes.
Here, “substantially horizontal” does not have to be completely horizontal, and includes the inclination due to the height difference between the floating body 1 and the fixed body 2 according to the vertical movement of the floating body. That is, the upper surface of the connecting bridge main body 12 is flat, and it is preferable that the upper surface is horizontal or nearly horizontal (for example, within 10 °) as long as people and vehicles can easily pass through without difficulty.
Further, the present invention is not limited to this “substantially horizontal”, and when the height difference between the floating body 1 and the fixed body 2 is large, the gradient may be set large in advance. In this case, the upper surface of the connecting bridge body 12 may be formed on a staircase or the like other than a plane.

  In addition, the connecting bridge body 12 is set to have a high bending rigidity through which a person or vehicle can pass, and a low torsional rigidity that can be twisted following the rolling of the floating body, and when the floating body rolls (rolls). The connecting bridge body 12 is twisted following the rolling of the floating body 1 so that the two pairs (four points) of the support portions do not float.

1 and 2, the pivot connecting device 20 connects the other end of the connecting bridge body 12 to the fixed body 2 so as to be rotatable and vertically movable about the vertical axis Z, and the floating body 1 is pitched ( Even if it is pitched) or yawed (rotated), it rotates and / or moves up and down around the vertical axis Z.
Moreover, the one end side of the connection bridge main body 12 restrains the movement of a bridge axis perpendicular direction by the guide hardware 40 (slidable to a bridge axis direction) installed on the floating body. With this configuration, it follows the pitching and yawing reasonably.

  3 is an enlarged view of a portion B in FIG. 2, (A) shows a case where the floating body 1 only moves up and down, and (B) shows a case where the floating body 1 relatively pitches (pitch) or yaws (rotates). Is shown.

  3A and 3B, the pivot coupling device 20 includes a pivot shaft body 22 and a shaft body coupling member 24.

The pivot shaft body 22 is fixed to one end portion or the other end portion (the other end portion in this example) of the connecting bridge main body 12 and extends downward. The pivot shaft 22 has an enlarged spherical surface portion 21 at the lower end portion thereof.
Further, in this example, the pivot shaft body 22 fixes the fixed flange 22a fixed to the horizontal lower surface of the connecting bridge body 12 and the fixed flange 22a so as not to slide along the horizontal lower surface of the connecting bridge main body 12. The shear plate 23 includes a pivot shaft 22b that extends vertically through the fixed flange 22a and is supported at the upper end of the connecting bridge body 12 at the upper end.
In this example, the shear plate 23 is firmly welded to the horizontal lower surface of the connecting bridge body 12. Further, the pivot shaft 22b is integrated with the through portion of the fixed flange 22a by welding.

With this configuration, the pivot shaft 22b can be machined separately from the fixed flange 22a, and the whole can be cut out from a cylindrical shape equivalent to the diameter of the enlarged spherical portion 21. Therefore, as compared with the case of being integrated with the fixed flange, the processing is easy and the cost can be reduced. Further, with this configuration, the fixing flange 22a only needs to support a horizontal force without receiving a bending moment, so that the plate thickness around the pivot shaft penetrating portion can be reduced, and the distance between the enlarged spherical surface portion 21 and the fixing flange 22a can be shortened. . As a result, the maximum bending moment acting on the pivot shaft 22b can be reduced.
Furthermore, since the pivot shaft 22b is supported at two points, the penetrating portion and the upper end of the fixed flange 22a, the shape of the flange penetrating portion on which the maximum bending moment acts can be made large and smooth, and stress concentration is avoided and the maximum Stress can be kept low.
Further, since the fixing flange 22a is fixed by the shear plate 23 so as not to slide along the horizontal lower surface, it is possible to prevent a shearing force from acting on a bolt or the like for fixing the fixing flange 22a.

3A and 3B, the shaft body connecting member 24 is fixed to the fixed body 2 and connects the pivot shaft body 22 so that it can rotate around the axis Z and can move up and down.
The shaft connecting member 24 has a hollow cylindrical hole 24a extending in the vertical direction. The hollow cylindrical hole 24a has substantially the same inner diameter as the enlarged spherical surface portion 21 of the pivot shaft body 22, and is inserted from above to be slidably fitted thereto.

  With this configuration, the enlarged spherical surface portion 21 at the lower end of the pivot shaft is supported by the hollow cylindrical hole 24a that is slidably fitted thereto, so that it can rotate around the vertical axis Z of the pivot shaft 22b and move vertically. It can be movably connected.

  The shaft body connecting member 24 has a hole bottom 24b that closes the lower end of the hollow cylindrical hole 24a, and a lubricating oil space 25 in which lubricating oil can be sealed between the hole bottom 24b and the inserted large diameter spherical surface portion 21. Have

  With this configuration, the lubricating oil (for example, grease) is sealed in the lubricating oil space 25 between the hole bottom 24 b of the hollow cylindrical hole and the inserted enlarged diameter spherical surface portion 21, so that the rotational movement and vertical movement of the pivot shaft 22 b can be performed. In this case, the lubricating oil can be automatically supplied to the sliding surface, the wear of the supporting sliding portion can be reduced, and the generation of noise and noise can be suppressed. In addition, since this lubricating oil is in the closed lubricating oil space 25 between the enlarged spherical surface portion, the outflow (dropping) of the lubricating oil during use can be almost eliminated, and contamination of the outside (sea surface, etc.) can be prevented. In addition, long-term holding of lubricating oil can be made possible.

FIG. 4 is another configuration diagram of part B of FIG. In this example, the pivot shaft body 22 includes a fixed flange 22a ′ fixed to the horizontal lower surface of the connecting bridge body 12 and a pivot shaft 22b ′ extending vertically downward from the fixed flange 22a ′. 22 a ′ is fixed by a shear plate 23 so as not to slide along the horizontal lower surface of the connecting bridge body 12. Other configurations are the same as those in FIG.
Also with this configuration, the diameter-enlarged spherical surface portion 21 at the lower end portion of the pivot shaft is supported by the hollow cylindrical hole 24a slidably fitted thereto, so that it can rotate around the vertical axis Z of the pivot shaft 22b. It can be connected to move up and down.
Also with this configuration, the lubricating oil (for example, grease) is sealed in the lubricating oil space 25 between the hole bottom 24b of the hollow cylindrical hole and the inserted enlarged-diameter spherical surface portion 21, thereby rotating the pivot shaft 22b. Lubricating oil can be automatically supplied to the sliding surface during the vertical movement, so that wear of the support sliding portion can be reduced and generation of noise and noise can be suppressed. In addition, since this lubricating oil is in the closed lubricating oil space 25 between the enlarged spherical surface portion, the outflow (dropping) of the lubricating oil during use can be almost eliminated, and contamination of the outside (sea surface, etc.) can be prevented. In addition, long-term holding of lubricating oil can be made possible.

  Further, in FIG. 1 and FIG. 2, two pairs of slide support devices 30 are provided in a pair at both ends (one end 10a and the other end 10b) of the floating connecting bridge 10, and the one end and the other end are floated. Alternatively, it is supported by a fixed body so as to be movable in the horizontal direction.

FIG. 5 is an enlarged view of a portion C in FIG. In this figure, the slide support device 30 has a cylindrical roller 32 attached to the lower surface of the connecting bridge body 12 and rotatable about the widthwise horizontal axis X, and a horizontal upper surface in contact with the outer peripheral surface of the cylindrical roller 32. The floor plate 34 is fixed to the floating body 1 or the fixed body 2.
With this configuration, even when the floating body 1 is pitched (pitched), the vertical load can be supported only by rotating (rolling) the cylindrical roller 32 on the floor plate 34. Therefore, the contact between the cylindrical roller 32 and the floor plate 34 can be maintained as it is, wear is small, and abnormal noise can be prevented.

Note that the present invention is not limited to this configuration, and conversely, the slide support device is attached to a floating body or a fixed body and is rotatable about a horizontal axis in the width direction, and an outer peripheral surface of the cylindrical roller. The structure which consists of a base plate which has a horizontal lower surface which touches and was fixed to the lower surface of a connecting bridge main body may be sufficient.
Even in this configuration, when the floating body is pitched (pitched), the cylindrical roller can support the vertical load only by rotating on the floor plate. Therefore, the contact between the cylindrical roller and the floor plate can be maintained as it is, wear is small, and abnormal noise can be prevented.

According to the above-described configuration of the present invention, since the pivot connecting device 20 that can rotate about the vertical axis Z and can move up and down is provided at the other end of the connecting bridge body 12, the floating body 1 is pitched (pitched) or yawed. Even if (rotating), it rotates and / or moves up and down around the vertical axis Z.
Moreover, the one end side of the connection bridge main body 12 restrains the movement of a bridge axis perpendicular direction by the guide metal object (slidable to a bridge axis direction) installed on the floating body. With this configuration, it is possible to easily follow pitching and yawing.
Moreover, since a pair of slide support devices 30 are provided at both ends and both ends of the connecting bridge body 12 are supported so as to be movable in the horizontal direction, even if the floating body 1 is pitched or yawed, the two pairs of slide support devices 30 communicate with each other. The bridge body can be supported at 4 points.

  Furthermore, according to the present invention, the connecting bridge body 12 is set to have a high bending rigidity that allows a person or a vehicle to pass therethrough and a low torsional rigidity that can be twisted following the rolling of the floating body. Even when rolling (rolling), the connecting bridge body is twisted following the rolling of the floating body, so that the four support portions can be prevented from rising.

  In addition, this invention is not limited to the Example and embodiment mentioned above, Of course, it can change variously in the range which does not deviate from the summary of this invention.

It is a whole block diagram of the connecting bridge for floating bodies of this invention. It is sectional drawing in the AA line and BB line of FIG. It is the B section enlarged view of FIG. It is another block diagram of the B section of FIG. It is the C section enlarged view of FIG. 1 is a configuration diagram of “a connecting bridge for floating piers and a load reducing device for floating piers” in Patent Document 1. FIG. It is a mimetic diagram of a load reducing device in patent documents 1.

Explanation of symbols

1 Floating body, 2 Fixed body, 10 Connecting bridge for floating body,
10a one end part, 10b other end part, 11a, 11b flap, 12 connecting bridge body,
20 Pivot connection device, 21 Expanded spherical part, 22 Pivot shaft body,
22a fixed flange, 22b pivot shaft, 23 shear plate,
24 shaft connecting member, 24a hollow cylindrical hole, 24b hole bottom, 25 lubricating oil space,
30 Slide support device, 32 Cylindrical roller, 34 Base plate, 40 Guide hardware

Claims (7)

At least one end is supported by a floating body that can swing horizontally and vertically, and the other end is a floating body connecting bridge supported by another floating body or a fixed body that does not swing,
A connecting bridge body that connects the one end and the other end and extends in the horizontal direction, through which a person or vehicle can pass,
A pivot connecting device for connecting one end and the other end of the connecting bridge body to a floating body or a fixed body so as to be rotatable about a vertical axis and movable up and down;
A pair of slide support devices provided to each of the one end portion and the other end portion and supporting the one end portion and the other end portion in a horizontal direction by a floating body or a fixed body are provided. A floating connecting bridge.   2. The connection bridge body according to claim 1, wherein the connecting bridge body is set to have a high bending rigidity through which a person or a vehicle can pass and a low torsional rigidity that can be twisted following the rolling of the floating body. Connecting bridge for floating bodies. The pivot coupling device is a pivot shaft that is fixed to one end or the other end of the connecting bridge body and extends downward,
It consists of a shaft body connecting member fixed to a floating body or a fixed body and connecting a pivot shaft body so as to be rotatable about a shaft center and movable up and down.
The pivot shaft has an enlarged spherical surface portion at a lower end portion thereof,
2. The shaft body connecting member according to claim 1, wherein the shaft connecting member has a hollow cylindrical hole in which the radially enlarged spherical portion is inserted from above and is slidably fitted with the hollow cylindrical hole extending substantially in the vertical direction. Connecting bridge for floating bodies.   The shaft body connecting member has a hole bottom that closes a lower end of the hollow cylindrical hole, and has a lubricating oil space capable of enclosing lubricating oil between the hole bottom and the inserted enlarged diameter spherical portion. The connecting bridge for floating bodies according to claim 3.   The pivot shaft body has a fixed flange fixed to the horizontal lower surface of the connecting bridge body, a shear plate for fixing the fixed flange so as not to slide along the horizontal lower surface, and an upper end extending vertically through the fixed flange. The floating connection bridge according to claim 3, comprising: a pivot shaft supported on an upper portion of the connection bridge body.   The slide support device has a cylindrical roller that is attached to the lower surface of the connecting bridge body and is rotatable about a horizontal axis in the width direction, and a horizontal upper surface that is in contact with the outer peripheral surface of the cylindrical roller, and is fixed to a floating body or a fixed body. The floating bridge according to claim 1, wherein the floating bridge is formed of a slab. The slide support device has a cylindrical roller attached to a floating body or a fixed body and rotatable about a horizontal axis in the width direction, and a horizontal lower surface in contact with the outer peripheral surface of the cylindrical roller, and is fixed to the lower surface of the connecting bridge body. The floating bridge according to claim 1, wherein the floating bridge is formed of a slab.

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