JP2023022962A - Heavy object loading device and adjustment plate - Google Patents

Abstract

To provide a heavy object loading device and adjustment plate capable of improving the conveying accuracy and conveying efficiency of a curved heavy object by using a simple configuration.SOLUTION: A heavy object loading device 1 includes: a first conveying unit 10 on which a curved bridge girder 5 is mounted and that conveys the curved bridge girder 5 in a first direction along a curved direction of a plane view shape of a principal plane 511 of the curved bridge girder 5; and a second conveying unit 20 on which the first conveyance unit 10 is mounted and on which the first conveying unit 10 conveys the curved bridge girder 5 along the first direction such that the curved bridge girder 5 is conveyed linearly along a prescribed direction, while simultaneously conveying the first conveying unit 10 along a second direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to a heavy object mounting device and an adjustment plate.

Currently, heavy load carrying devices are known for transporting bridge girders to bridge piers. Such a heavy load mounting device includes a slide device capable of supporting a bridge girder to be moved in a first direction and capable of moving along a second direction, an inclination sensor for detecting the inclination of the slide device, and a second slide device. When it is determined that the slide device is tilted from the detection value from the tilt sensor, the traction device generates a pulling force in the direction opposite to the second direction to the slide device. Patent document 1 discloses a device configured to allow It is said that when such a heavy load mounting device is employed, a heavy load such as a bridge girder can be safely supported in an extremely stable state when the heavy load is rotated or laterally moved.

JP 2013-87441 A

However, the conventional heavy load mounting device disclosed in Patent Document 1 is a device for linearly conveying a straight heavy load whose main surface is straight in plan view, such as a straight bridge girder. It is not an apparatus for linearly conveying a curvilinear heavy object having a curved plane view shape. Therefore, when a curved heavy object is linearly conveyed using the conventional heavy object mounting device disclosed in Patent Document 1, the transportation by the heavy object mounting device is temporarily stopped every time the bending direction of the curved heavy object changes. Then, a person needs to manually adjust the conveying direction of the curved heavy object. As a result, frequent equipment stoppages and work time required for manual adjustment occur, and the efficiency of conveying heavy objects deteriorates. On the other hand, without such an adjustment, the heavy load mounting apparatus cannot linearly transport a curved heavy load, and the transport accuracy of the heavy load mounting apparatus is degraded.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heavy object mounting apparatus and an adjustment plate that can improve the accuracy and efficiency of conveying a curved heavy object with a simple configuration. and

In order to achieve the above object, a heavy object mounting apparatus according to the present invention linearly conveys a curved heavy object having a flat main surface and a curved main surface in plan view. a first conveying unit on which a curved heavy object is mounted and which conveys the curved heavy object in a first direction along the curved direction of the shape of the main surface in plan view; is loaded and the curved heavy load is transported linearly along the predetermined direction, the first transport section transports the curved heavy load along the first direction, and at the same time, the first transport section is moved to the second and a second transport unit that transports along the direction.

By adopting such a configuration, it is possible to adjust the conveying direction of a curved heavy object using a simple configuration, so that even a curved heavy object can be linearly conveyed along a predetermined direction. be able to. As a result, it is possible to improve the conveying accuracy of curved heavy objects, and reduce the labor and cost required for manual adjustment as compared with the case of manually adjusting the conveying direction of curved heavy objects. It is possible to suppress the deterioration of the transportation work efficiency due to the work time for stopping and adjusting the transportation of the curved heavy object at times. In this way, it is possible to improve the conveying accuracy and the conveying efficiency of curved heavy objects.

In the heavy object mounting apparatus according to the present invention, the first conveying unit moves in a third direction, which is a linear direction, and has a first conveying surface on which the curved heavy object is mounted, and the curved heavy object is mounted on the first conveying surface in the first direction. a first adjustment unit for adjusting the position of the curved heavy article on the first conveying plane while the curved heavy article is conveyed in the third direction by the first conveying surface so that the curved heavy article is conveyed along the good too.

By adopting such a configuration, the linear movement of the conveying surface can be easily converted into the curved movement of the curved heavy object.

In the heavy object mounting apparatus according to the present invention, when the main surface of the curved heavy object being conveyed is viewed from above, the first adjusting section rotates the curved heavy object along the curving direction with respect to the first conveying surface. One position adjustment may be performed.

By adopting such a configuration, it is possible to adjust the position of the curved heavy article with respect to the first conveying surface, and to improve the transportation stability of the curved heavy article.

In the heavy object mounting apparatus according to the present invention, the first conveying unit further has an adjusting plate, the curved heavy object is mounted on the first conveying surface via the adjusting plate, and the adjusting plate is configured to support the curved heavy object. and a second plate attached to the first plate, the first plate overlying the second plate so as to be rotatable relative to the second plate. The first adjustment unit may perform the first position adjustment by rotating the first plate with respect to the second plate.

By adopting such a configuration, it is possible to adjust the position of the curved heavy object with respect to the first conveying surface using a simple configuration.

In the heavy object mounting apparatus according to the present invention, the first adjustment part has a guide jack that can be expanded and contracted in a direction intersecting the third direction, and the first adjustment part is configured such that the guide jack presses the curved heavy object. The first position adjustment may be performed by extending and retracting the guide jacks to rotate the first plate relative to the second plate.

By adopting such a configuration, it is possible to reduce the manufacturing cost of the device by simplifying the configuration for adjusting the position of the curved heavy object.

In the heavy object mounting apparatus according to the present invention, the second conveying section has a second adjusting section including a rotating shaft and a rotating plate on which the first conveying section is mounted. A second position adjustment may be performed by rotating the first conveying unit about the rotation axis so that the object moves linearly.

By adopting such a configuration, it is possible to adjust the position of the first conveying section using a simple configuration.

In the heavy object mounting apparatus according to the present invention, the second conveying unit further has a third adjusting unit on which the second adjusting unit is mounted, and the third adjusting unit linearly moves the heavy object along a predetermined direction. At the same time as the second adjustment unit performs the second position adjustment, the second adjustment unit performs a third position adjustment to move the second adjustment unit along the fourth direction, which is the linear direction, and the second position adjustment and the third position adjustment are performed. The position adjustment may move the second conveying part along the second direction.

By adopting such a configuration, it is possible to linearly convey a heavy object along a predetermined direction, making it possible to improve the accuracy of conveying a heavy object.

In the heavy object mounting apparatus according to the present invention, the second adjusting section has a rotating jack that is attached to the rotating plate and can rotate the rotating plate by extending and contracting, and the third adjusting section extends and retracts. By doing so, it may have a moving jack capable of reciprocating the second adjustment part along the fourth direction.

By adopting such a configuration, it is possible to adjust the position of the first conveying section using a simple configuration.

In the heavy object mounting apparatus according to the present invention, the curved heavy object may be a bridge girder, the main surface may be a main surface of a flange of the bridge girder, and the main surface may have a clothoid curve shape in plan view.

By adopting such a configuration, it is possible to linearly transport the clothoid curve-shaped bridge girders along a predetermined direction, thereby improving the accuracy and efficiency of transporting the bridge girders.

An adjustment plate according to the present invention is an adjustment plate for adjusting the mounting position in a heavy object conveying device, which is used in a conveying device that linearly conveys a heavy object having a flat main surface along a predetermined direction. A heavy object is mounted on a conveying device via an adjustment plate, and the adjustment plate has a first plate fixed to the main surface of the heavy object and a second plate attached to the first plate. , the first plate is mounted on the second plate so as to be rotatable relative to the second plate.

By adopting such a configuration, it is possible to adjust the mounting position of the heavy object conveying apparatus using a simple configuration.

In the adjustment plate according to the present invention, the first plate has a flat first side surface, and the second plate has a second side surface corresponding to the first side surface, which is a convex arcuate surface or a concave arcuate surface. and the first plate may rotate relative to the second plate when an external force causes the first side to slide in contact with the second side.

By adopting such a configuration, it is possible to simplify the adjustment configuration of the mounting position in the transport apparatus for heavy objects.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the heavy-object mounting apparatus and adjustment plate which can improve the conveyance precision and conveyance efficiency of curved heavy objects using a simple structure.

1 is a perspective view showing a usage state of a heavy object mounting apparatus according to this embodiment; FIG. 1 is a perspective view showing the configuration of a heavy object mounting device according to an embodiment; FIG. It is a figure which shows the structure of the heavy-goods delivery part of the heavy-goods mounting apparatus which concerns on this embodiment. It is a figure which shows the structure of the adjustment plate of the heavy-goods mounting apparatus which concerns on this embodiment. It is a figure which shows the attachment relationship of the 1st plate and 2nd plate which comprise the adjustment plate of the heavy-goods mounting apparatus which concerns on this embodiment. It is a figure which shows the structure of the 1st plate of the heavy-goods mounting apparatus which concerns on this embodiment. It is a figure which shows the structure of the 2nd plate of the heavy-goods mounting apparatus which concerns on this embodiment. It is a figure which shows the conveyance state of the curved bridge girder by the heavy-object mounting apparatus which concerns on this embodiment. It is a figure which shows the conveyance state of the curved bridge girder by the heavy-object mounting apparatus which concerns on this embodiment. It is a figure which shows the conveyance state of the curved bridge girder by the heavy-object mounting apparatus which concerns on this embodiment. It is a figure for demonstrating the 1st position adjustment by the 1st adjustment part of the heavy-goods mounting apparatus which concerns on this embodiment. It is a figure for demonstrating the 1st position adjustment by the 1st adjustment part of the heavy-goods mounting apparatus which concerns on this embodiment. It is a figure for demonstrating the 2nd position adjustment by the 2nd adjustment part of the heavy-goods mounting apparatus which concerns on this embodiment. It is a figure for demonstrating the 2nd position adjustment by the 2nd adjustment part of the heavy-goods mounting apparatus which concerns on this embodiment.

Hereinafter, this embodiment will be described with reference to each drawing. Unless otherwise specified, the positional relationship such as top, bottom, left, and right of the drawings is based on the positional relationships shown in the drawings. Also, the dimensional ratios in the drawings are not limited to the illustrated ratios. Furthermore, the following embodiments are examples for explaining the present invention, and are not meant to limit the present invention only to these embodiments. Furthermore, the present invention can be modified in various ways without departing from the scope of the invention.

<Overview of heavy object mounting device 1>
First, with reference to FIGS. 1 and 5A to 5C, an overview of transportation by the heavy object mounting apparatus 1 according to this embodiment will be described. FIG. 1 is a perspective view showing the state of use of the heavy object mounting apparatus 1. FIG. 5A to 5C are diagrams showing how the curved bridge girder 5 is conveyed by the heavy object mounting apparatus 1. FIG. Here, in FIG. 2, the curved bridge girder 5 is shown as transparent in order to show the configuration of the heavy object mounting apparatus 1. As shown in FIG. Also, in FIG. 1, the assembly yard, gantry, etc. that support the heavy object mounting apparatus 1 are omitted.

The heavy object mounting apparatus 1 according to the present embodiment is an example of a heavy object mounting apparatus capable of linearly conveying a curved heavy object along a predetermined direction. Here, the curvilinear heavy object is a heavy object having a flat main surface and having a curved shape in a plan view of the main surface. It should be noted that the object to be conveyed by the heavy object mounting apparatus 1 is not limited to a curved heavy object, and may be a linear heavy object. In the following description, the object to be transported by the heavy object mounting apparatus 1 is described as a curved bridge girder 5, which is an example of a curved heavy object.

The curved bridge girder 5 is a clothoid curved bridge girder, as shown in FIG. 5A. The curved bridge girder 5 also has a pair of flanges 51 and a web 52 provided between the pair of flanges 51, as shown in FIG. The flange 51 is a plate-like member, and has main surfaces 511 and 512 on both sides in the thickness direction. Both the principal surface 511 and the principal surface 512 are flat principal surfaces and have a clothoid curve shape in plan view. The web 52 is a plate-like member and has main surfaces 521 and 522 on both sides in the thickness direction. The web 52 is provided on the flange 51 so that its width direction intersects the width direction of the flange 51 .

During transportation, the curved bridge girder 5 is transported by a pair of heavy load mounting devices 1 provided on both sides in the width direction. Specifically, the pair of heavy load mounting devices 1 operate under the control of a control unit (not shown) to install the curved bridge girders 5 on the first pier A1 and the second pier A2 shown in FIGS. 5A to 5C. The curved bridge girder 5 is linearly conveyed along a predetermined direction D, which is a linear direction from the first pier A1 to the second pier A2, so as to bridge the bridge.

In this case, the curved bridge girder 5 is mounted on the pair of heavy load mounting devices 1 via the main surface 511 . A pair of heavy load carrying devices 1 are movably attached to the first bridge pier A1 by an attachment structure (not shown). Two or more pairs of heavy load mounting devices 1 may be employed according to the direction in which the curved bridge girder 5 curves and extends, that is, the dimension in the direction in which the main surface 511 is curved in plan view. In this case, the first set may be attached to the first pier A1 and the other set to the gantry B. Details of the transportation of the curved bridge girder 5 by the heavy object mounting device 1 will be described after the configuration of the heavy object mounting device 1 is described. In the following description, the curved direction of the planar view shape of the main surface 511 of the curved bridge girder 5 may be referred to as the "curved direction".

<Structure of heavy object mounting device 1>
Next, the configuration of the heavy object mounting apparatus 1 according to this embodiment will be described in detail with reference to FIGS. 1 to 5A. FIG. 2 is a perspective view showing the configuration of the heavy object mounting apparatus. FIG. 3 is a diagram showing the configuration of the heavy object delivery section 11 of the heavy object loading device. 4A to 4D are diagrams showing the configuration of the adjustment plate 150. FIG.

As shown in FIGS. 2 and 5A, the heavy object mounting apparatus 1 includes a first conveying section 10 on which the curved bridge girder 5 is mounted and which conveys the curved bridge girder 5 in a first direction D1 along the curving direction; a second conveying unit 20 that conveys the first conveying unit 10 along a second direction D2 so that the conveying unit 10 is mounted and the curved bridge girder 5 is linearly conveyed along the predetermined direction D; Prepare. The transportation of the curved bridge girder 5 by the first transportation unit 10 and the transportation of the first transportation unit 10 by the second transportation unit 20 are performed simultaneously.

[First Conveyor 10]
The first conveying section 10 has a heavy article delivery section 11, a first adjustment section 13, and an adjustment plate section 15, as shown in FIG. The curved bridge girder 5 is mounted on the heavy load delivery section 11 via the adjustment plate section 15 . The heavy load delivery unit 11 transports the curved bridge girder 5 by linear movement of the first transport surface 125, which will be described later. The first adjustment section 13 performs a first position adjustment to rotate the curved bridge girder 5 with respect to the first conveying surface along the bending direction via the adjustment plate section 15 . In addition, the transportation by the heavy article delivery section 11 and the adjustment by the first adjustment section 13 and the adjustment plate section 15 are performed simultaneously. In the following description, the state in which the curved bridge girder 5 is mounted on the heavy object delivery section 11 via the adjustment plate section 15 may be referred to as the "mounted state."

(Heavy article sending unit 11)
The heavy object delivery unit 11 is, for example, a synchronous jack. As shown in FIG. 3, the heavy article delivery section 11 includes a delivery body section 110, an endless track belt 120 rotated by driving the delivery body section 110, and the entirety of the heavy article delivery section 11 to the second conveying section 20. and a base portion 130 for attachment.

The delivery main body 110 has a pair of drive rollers 111 provided on both sides of the delivery main body 110 and an elevating section 112 provided between the pair of drive rollers 111, as shown in FIG. The pair of driving rollers 111 is configured to drive the rotation of the endless track belt 120 by rotating. The lifting section 112 is configured to support the curved bridge girder 5 and the adjustment plate section 15 via the endless track belt 120 .

As shown in FIG. 3, the lifting section 112 has a plurality of vertical jacks 113 and Teflon (registered trademark) lifting jacks 114 that come into contact with the inner peripheral surface 122 of the track belt 120, which will be described later. By supplying hydraulic pressure to the vertical jacks 113, the vertical jacks 113 move the corresponding portions of the endless track belt 120 (specifically, a conveying section 124 to be described later) and the curved bridge girder 5 through the Teflon push-up jacks 114. It can be evenly supported from below.

The endless track belt 120 is, for example, an endless crawler connected by a plurality of crawler plates 129, as shown in FIG. Track belt 120 has an outer peripheral surface 121 and an inner peripheral surface 122 . When the delivery main body 110 is viewed from the front, the inner peripheral surface 122 of the endless track belt 120 abuts against the pair of drive rollers 111, and the inner peripheral surface 122 is supported by the Teflon push-up jacks 114 of the elevating unit 112. As shown in FIG.

A portion of the endless track belt 120 that is positioned between the pair of driving rollers 111 and that contacts the Teflon push-up jacks 114 of the lifting section 112 is a conveyor belt on which the curved bridge girder 5 is mounted via the adjustment plate section 15 . A part 124 is constructed. A portion of the outer peripheral surface 121 corresponding to the conveying portion 124 constitutes a first conveying surface 125 . When the track belt 120 rotates in the manner shown in FIG. 3, the first conveying surface 125 moves in a linear third direction D3. In this manner, in the loaded state, the heavy load delivery section 11 can transport the curved bridge girder 5 by linear movement in the third direction on the first transport surface 125 . The third direction D3 is a constant direction in the heavy article delivery section 11, and when the first transportation section 10 is rotated by the second transportation section 20, the rotation of the heavy article delivery section 11 also corresponds to the third direction D3. direction changes accordingly.

(First adjuster 13)
As shown in FIG. 2, the first adjusting section 13 includes a frame portion 135 fixed around the delivery main body portion 110, and a first guide jack 131 and a second guide jack 132 provided on the upper surface of the frame portion 135. , has The first guide jacks 131 and the second guide jacks 132 are provided above the first conveying surface 125 so as to come into contact with the main surface 521 of the web 52 of the curved bridge girder 5 .

Also, the first guide jacks 131 and the second guide jacks 132 expand and contract in the direction D5 intersecting the third direction D3, so that the curved bridge girder 5 mounted on the first conveying surface 125 via the adjustment plate portion 15 is It is configured such that the mounting position on the first conveying surface 125 can be adjusted. Specifically, when the first conveying surface 125 is viewed from above, when the first guide jack 131 extends more than the second guide jack 132, the curved bridge girder 5 rotates clockwise via the adjustment plate portion 15, When the second guide jack 132 extends more than the first guide jack 131, the curved bridge girder 5 rotates counterclockwise via the adjustment plate portion 15, and the amount of expansion and contraction of the first guide jack 131 and the second guide jack 132 are the same, the curved bridge girder 5 translates along the direction D4 (described below) shown in FIG.

In this way, the first adjusting unit 13 moves the curved bridge girder 5 so that the curved bridge girder 5 is transported along the first direction D1 by the first transport surface 125 in the third direction D3, and at the same time, the curved bridge girder 5 is transported along the first direction D1. A first position adjustment can be made to the position in the first transport surface 125 of the . Therefore, the curved bridge girder 5 can be rotated with respect to the first transport surface 125 along the curving direction at the same time when the curved bridge girder 5 is transported in the third direction D3. As a result, the curved bridge girder 5 is conveyed in the first direction D1. In other words, the movement of the curved bridge girder 5 in the first direction D<b>1 is a combined movement of the movement of the curved bridge girder 5 in the third direction D<b>3 and the rotation of the curved bridge girder 5 with respect to the first conveying surface 125 .

(Adjustment plate portion 15)
As shown in FIG. 2 , the adjustment plate portion 15 is configured by arranging a plurality of adjustment plates 150 along the extending direction of the curved bridge girder 5 . Each adjusting plate 150 has a major surface 150a and a major surface 150b on opposite sides in the thickness direction, as shown in FIG. 4A. In the mounted state, the principal surface 150 a is the surface that contacts the principal surface 511 of the curved bridge girder 5 , and the principal surface 150 b is the surface that contacts the first conveying surface 125 of the heavy load delivery section 11 .

4A to 4D, the adjustment plate section 15 has a first plate 151 and a second plate 152 placed so as to overlap each other. Hereinafter, the state in which the first plate 151 is placed on the second plate 152 may be referred to as a "placed state".

The first plate 151 is a plate-like member made of metal (for example, SCM440). The first plate 151 has a base plate 153 and two guide bars 155 provided on the base plate 153, as shown in FIGS. 4A and 4B.

A plurality of neodymium magnets 161 are embedded in the base plate 153 as shown in FIGS. 4A and 4C. Therefore, in the mounted state, the curved bridge girder 5 is attracted to the base plate 153 by the magnetic force of the neodymium magnets 161 and can be fixed to the adjustment plate portion 15 .

The guide bars 155 are attached to both longitudinal ends of the main surface 153 b of the base plate 153 with a plurality of bolts 163 . In this case, the first side surfaces 157 of each base plate 153 are provided to face each other, as shown in FIGS. 4A and 4B. In this way, the two first side surfaces 157 and the main surface 153b constitute a slide space in which the slide portion 154 of the second plate 152, which will be described later, rotates and slides.

The second plate 152 is a plate-like member made of resin (for example, MC901). As shown in FIGS. 4A and 4D, the second plate 152 has a sliding portion 154 which is a convex portion in the center and side portions 156 on both sides of the sliding portion 154 in the longitudinal direction.

The slide portion 154 is a portion that is inserted into the slide space of the first plate 151 in the placed state. Therefore, the maximum longitudinal dimension L2 of the slide portion 154 (see FIG. 4D) is slightly smaller than the distance L1 between the two first side surfaces 157 of the first plate 151 (see FIG. 4B). Specifically, as shown in FIGS. 4B and 4D, the slide 154 has second side surfaces 158 that are two convex arcuate surfaces on opposite sides in the longitudinal direction. As shown in FIGS. 4B and 4D, the shape of the second side surface 158 in plan view is arcuate with a radius of R1. Also, a minimum gap G1 is formed between each second side surface 158 and the first side surface 157 corresponding to the second side surface 158 . Here, for example, if R1 is 250 mm, G1 is approximately 1.5 mm. Thus, in the placed state, the slide portion 154 can slide and rotate while being supported and restricted by the two first side surfaces 157 .

A plurality of neodymium magnets 162 are embedded in the slide portion 154 as shown in FIGS. 4A and 4C. Therefore, in the mounted state, the first plate 151 made of metal is attracted to the slide portion 154 by the magnetic force of the neodymium magnets 162, so that the first plate 151 and the second plate 152 can be attached.

In this way, when the first plate 151 and the second plate 152 are not subjected to an external force in the mounted state, they are fixed without relative movement by magnetic force. Therefore, the mounting position of the curved bridge girder 5 mounted on the first conveying surface 125 via the adjustment plate portion 15 is maintained in a constant state on the first conveying surface 125, and the stability of the conveying of the curved bridge girder 5 is ensured. can be done. On the other hand, when the first plate 151 and the second plate 152 receive an external force, the first side 157 of the first plate 151 slides in contact with the second side 158 of the second plate 152 due to the external force. Rotate with respect to the second plate. Therefore, it is possible to easily adjust the mounting position of the curved bridge girder 5 on the first conveying surface 125 without stopping the conveying by the heavy object delivery unit 11 .

The side portion 156 is a portion thinner than the slide portion 154 . In the placed state, the side portion 156 supports the two guide bars 155 of the first plate 151 . Therefore, the load of the curved bridge girders 5 received by the first plate 151 can be distributed not only to the slide portions 154 but also to the side portions 156 .

In this way, the first conveying section 10 linearly conveys the curved bridge girder 5 along the third direction D3 by the heavy object delivery section 11, and the first adjustment section 13 and the adjustment plate section 15 operate the curved bridge girder 5 to move the curved bridge girder 5 to the third direction D3. The mounting position on the 1 conveying surface 125 can be kept rotating along the curving direction. As a result, the first conveying unit 10 can convey the curved bridge girder 5 along the first direction D1, as shown in FIG. 5A. In other words, the movement of the curved bridge girder 5 in the first direction D1 is a combined movement of the movement of the curved bridge girder 5 in the third direction D3 and the rotation of the curved bridge girder 5 with respect to the first conveying surface 125 .

[Second Conveyor 20]
As shown in FIG. 2, the second conveying section 20 has the first conveying section 10 mounted thereon, a second adjusting section 21 for rotating the first conveying section 10, and a second adjusting section 21 mounted thereon. and a third adjusting portion 23 for moving the portion 21 in a linear direction.

(Second adjustment unit 21)
The second adjustment unit 21 is configured to perform a second position adjustment to rotate the first conveying unit 10 so that the curved bridge girder 5 moves linearly. The second adjuster 21 includes a base portion 210, a rotating shaft (not shown) fixed to the base portion 210, a rotating plate 220 rotatably attached to the rotating shaft, and rotating the rotating plate 220. and a rotating jack 230 .

The base portion 210 is arranged on the third adjustment portion 23 . The base portion 210 can support the entire second adjustment portion 21 and can be moved in a linear direction by the third adjustment portion 23 .

The rotary jack 230 has one end fixed to the base portion 210 and the other extendable end attached to the rotary plate 220 . In this way, when the rotating plate 220 is viewed from above, the rotating jack 230 expands and contracts by supplying hydraulic pressure to the rotating jack 230, thereby rotating the rotating plate 220 clockwise or counterclockwise.

(Third adjuster 23)
The third adjuster moves the second adjuster 21 in the linear direction at the same time as the second adjuster 21 performs the second position adjustment so that the curved bridge girder 5 moves linearly along the predetermined direction D. It is a configuration for performing a third position adjustment to move along the fourth direction D4. The third adjuster 23 is, for example, Juscoro. The third adjuster 23 is provided along the longitudinal direction of the first pier A1 (see FIG. 1). Further, the third adjusting portion 23 has a moving jack (not shown) capable of reciprocating the second adjusting portion 21 along the fourth direction D4 by expanding and contracting. Thus, the second adjuster 21 arranged in the third adjuster 23 can linearly move to the first side or the second side along the fourth direction D4.

In this way, the second conveying unit 20 conveys the curved bridge girder 5 along the first direction D1 by the first conveying unit 10, rotates the first conveying unit 10 by the second adjusting unit 21, and performs the third adjustment. and moving the first conveying unit 10 in the fourth direction by the unit 23 . As a result, the second transport section 20 can transport the first transport section 10 along the second direction D2 (see FIG. 5A). In other words, the movement of the first transport section 10 in the second direction D2 is a combined movement of the movement of the first transport section 10 in the fourth direction D4 and the rotation of the first transport section 10 .

<Conveyance by heavy object mounting device 1>
Next, the conveyance of the curved bridge girder 5 by the heavy load mounting device 1 will be described with reference to FIGS. 5A to 7B. 5A to 5C are diagrams showing how the curved bridge girder 5 is conveyed by the heavy object mounting apparatus 1. FIG. 6A and 6B are diagrams for explaining the first position adjustment by the first adjusting section 13 and the second adjusting section 21. FIG. 7A and 7B are diagrams for explaining the first position adjustment by the second adjustment section 21. FIG.

First, as shown in FIG. 5A, the first part 501 of the curved bridge girder 5 is mounted on the heavy load mounting device 1, the other portion of the curved bridge girder 5 is placed on the gantry B, and the transport by the heavy load mounting device 1 is performed. prepare. In this case, the heavy object mounting device 1 is located on the second side of the first pier A1 in the fourth direction (see FIG. 2).

After the preparation is completed, under the control of the control unit, the heavy object mounting apparatus 1, that is, the transportation by the first transportation unit 10 and the transportation by the second transportation unit 20 are started at the same time. In this case, the transport by the heavy load delivery unit 11 of the first transport unit 10, the first position adjustment by the first adjustment unit 13 and the adjustment plate unit 15 of the first transport unit 10, and the second adjustment by the second transport unit 20 The second position adjustment by the portion 21 and the third position adjustment by the third adjustment portion 23 of the second conveying portion 20 are performed simultaneously.

Specifically, the process of moving from the state shown in FIG. 5A to the state shown in FIG. In the case where the second part 502 reaches the heavy object mounting device 1 , the heavy object delivery part 11 is configured to have the first adjustment part 13 and the adjustment plate part 15 depending on the shape of the first part 501 to the second part 502 of the curved bridge girder 5 . , the curved bridge girder 5 is conveyed in the first direction D1, the second adjusting section 21 rotates the first conveying section 10 counterclockwise, and the third adjusting section 23 rotates the first conveying The part 10 is moved to the first side in the fourth direction D4. Thus, the curved bridge girder 5 can be transported along the predetermined direction D.

5B to the state shown in FIG. 5C. reaches the heavy object mounting device 1, the heavy object sending part 11 adjusts the first adjustment part 13 and the adjustment plate part 15 according to the shape of the second part 502 to the third part 503 of the curved bridge girder 5. Originally, while conveying the curved bridge girder 5 in the first direction D1, the second adjusting section 21 continues to rotate the first conveying section 10 counterclockwise, and the third adjusting section 23 continues to rotate the first conveying section 10. to the second side in the fourth direction D4. Thus, the curved bridge girder 5 can be transported along the predetermined direction D.

In this way, as shown in FIGS. 5A to 5C, the curved bridge girder 5 is linearly conveyed along the predetermined direction D and spanned over the first pier A1 and the second pier A2.

On the other hand, in the transportation process from FIG. 5A to FIG. 5C , only the transportation by the heavy object delivery unit 11 is performed, and the first position adjustment by the first adjustment unit 13 is not performed or not performed at the same time, or vibration is not performed at the same time. As shown in FIG. 6A, positional deviation may occur on the first conveying surface 125 of the curved bridge girder 5 due to external factors such as the like. When the curved bridge girder 5 is displaced, the second guide jacks 132 move away from the main surface 521 of the web 52 of the curved bridge girder 5 and cannot support the curved bridge girder 5 . Therefore, the curved bridge girder 5 does not rotate with respect to the first conveying surface 125, and the first conveying unit 10 cannot convey the curved bridge girder 5 along the first direction D1. As a result, the heavy object mounting apparatus 1 cannot linearly convey the curved bridge girder 5 along the predetermined direction D.

With respect to such a positional deviation problem of the curved bridge girder 5, the second adjustment unit 21 rotates the first conveying unit 10 in the counterclockwise direction while rotating the first guide jack 131 and the second guide of the first adjustment unit 13. The extension of the jack 132 can correct the misalignment problem of the curved bridge girder 5, as shown in FIG. 6B.

In addition, the curved bridge girders 5 are conveyed only by the first conveying unit 10 and not conveyed by the second conveying unit 20 or are not conveyed at the same time, as shown in FIGS. It may occur that the sheet is transported only in the direction D1. When the curved bridge girder 5 is displaced in the conveying direction, the curved bridge girder 5 is no longer linearly conveyed along the predetermined direction D. As shown in FIG.

With respect to such a problem of displacement of the curved bridge girders 5 in the conveying direction, the second adjustment unit 21 of the second conveying unit 20 rotates the first conveying unit 10 counterclockwise, so that as shown in FIG. 7B , the problem of deviation in the conveying direction of the curved bridge girders 5 can be repaired.

In the heavy object mounting apparatus 1 according to the embodiment described above, the curved bridge girder 5 having the flat main surface 511 and having a curved plane shape of the main surface 511 is linearly along the predetermined direction D. a first conveying unit 10 capable of conveying, on which the curved bridge girder 5 is mounted, and conveying the curved bridge girder 5 in a first direction D1 along the curved direction of the shape of the main surface 511 in plan view; At the same time when the first conveying unit 10 conveys the curved bridge girder 5 along the first direction D1 so that the first conveying unit 10 is mounted and the curved bridge girder 5 is linearly conveyed along the predetermined direction D. , and a second transport unit 20 that transports the first transport unit 10 along the second direction D2. As a result, it is possible to adjust the conveying direction of a curved heavy object using a simple configuration, so that even a curved heavy object can be linearly conveyed along a predetermined direction. . As a result, it is possible to improve the conveying accuracy of curved heavy objects, and to reduce the labor and cost required for manual adjustment as compared with the case of manually adjusting the conveying direction of curved heavy objects. It is possible to suppress the deterioration of the transportation work efficiency due to the work time for stopping and adjusting the transportation of the curved heavy object at times. In this way, it is possible to improve the conveying accuracy and the conveying efficiency of curved heavy objects.

In addition, in the heavy object mounting apparatus 1 according to the embodiment described above, the first conveying unit 10 moves in the third direction D3, which is the linear direction, and the first conveying surface 125 on which the curved bridge girder 5 is mounted. Then, the curved bridge girder 5 is conveyed in the third direction D3 by the first conveying surface 125 so that the curved bridge girder 5 is conveyed along the first direction D1, and at the same time, the curved bridge girder 5 on the first conveying surface 125 and a first adjusting portion 13 for adjusting the position. As a result, the linear movement of the conveying surface can be easily converted into the curved movement of the curved heavy object.

Further, in the heavy object mounting apparatus 1 according to the embodiment described above, when the main surface 511 of the curved bridge girder 5 being transported is viewed from above, the first adjustment unit 13 moves the curved bridge girder 5 along the bending direction to the first position. A first positional adjustment can be made by rotating with respect to the transport surface 125 . As a result, it is possible to adjust the position of the curved heavy article with respect to the first conveying surface, and improve the transportation stability of the curved heavy article.

In addition, in the heavy object mounting apparatus 1 according to the embodiment described above, the first conveying section 10 further has an adjusting plate 150, and the curved bridge girder 5 is mounted on the first conveying surface 125 via the adjusting plate 150. The adjustment plate 150 has a first plate 151 fixed to the main surface 511 of the curved bridge girder 5 and a second plate 152 attached to the first plate 151, the first plate 151 It is mounted on the second plate 152 so as to be rotatable with respect to the second plate 152, and the first adjustment unit 13 rotates the first plate 151 with respect to the second plate 152 to A first alignment can be performed. As a result, it is possible to adjust the position of the curved heavy object with respect to the first conveying surface using a simple configuration.

In addition, in the heavy object mounting apparatus 1 according to the embodiment described above, the first adjusting section 13 has the first guide jack 131 and the second guide jack 132 that can expand and contract in the direction D5 that intersects with the third direction D3. Then, the first adjustment unit 13 expands and contracts the first guide jacks 131 and the second guide jacks 132 so that the first guide jacks 131 and the second guide jacks 132 press the curved bridge girder 5 , thereby moving the first plate 151 . Rotation relative to the second plate 152 may provide a first position adjustment. As a result, the manufacturing cost of the device can be reduced by simplifying the configuration for adjusting the position of the curved heavy object.

Further, in the heavy object mounting apparatus 1 according to the embodiment described above, the second conveying section 20 includes the second adjusting section 21 including the rotating shaft and the rotating plate 220 on which the first conveying section 10 is mounted. The second adjusting unit 21 can perform the second position adjustment by rotating the first conveying unit 10 about the rotation axis so that the curved bridge girder 5 moves linearly. As a result, the position of the first conveying section can be adjusted using a simple configuration.

In addition, in the heavy object mounting apparatus 1 according to the embodiment described above, the second conveying section 20 further includes the third adjusting section 23 on which the second adjusting section 21 is mounted. At the same time as the second adjustment unit 21 performs the second position adjustment so that the curved bridge girder 5 moves linearly along the predetermined direction D, the second adjustment unit 21 moves along the fourth direction D4, which is the linear direction. By performing the third position adjustment to move, the second conveying unit 20 can be moved along the second direction D2 by the second position adjustment and the third position adjustment. As a result, a heavy object can be conveyed linearly along a predetermined direction, and the accuracy of conveying the heavy object can be improved.

Further, in the heavy object mounting apparatus 1 according to the embodiment described above, the second adjusting section 21 includes the rotating jack 230 that is attached to the rotating plate 220 and that can rotate the rotating plate 220 by expanding and contracting. The third adjuster 23 can have a movable jack capable of reciprocating the second adjuster 21 along the fourth direction D4 by expanding and contracting. As a result, it is possible to adjust the position of the first conveying section using a simple configuration.

Further, in the heavy object mounting apparatus 1 according to the embodiment described above, the curved bridge girder 5 is an example of a curved heavy object, and the main surface 511 is the main surface of the flange 51 of the curved bridge girder 5. can be a clothoid curve in plan view. As a result, it is possible to linearly transport the clothoid curve-shaped bridge girder along a predetermined direction, thereby improving the accuracy and efficiency of transporting the bridge girder.

In the adjustment plate 150 according to the embodiment described above, the curved bridge girder 5 is mounted on the heavy load mounting apparatus 1 via the adjustment plate 150, and the adjustment plate 150 is fixed to the main surface 511 of the curved bridge girder 5. 1 plate 151 and a second plate 152 attached to the first plate 151 , the first plate 151 being mounted on the second plate 152 so as to be rotatable relative to the second plate 152 . can be As a result, it is possible to adjust the mounting position of the heavy article conveying apparatus using a simple configuration.

Further, in the adjustment plate 150 according to the embodiment described above, the first plate 151 has the flat first side surface 157 , and the second plate 152 has a convex arcuate surface corresponding to the first side surface 157 . or having a second side surface 158 that is a concave arc-shaped surface, and when the first side surface 157 slides in contact with the second side surface 158 due to an external force, the first plate 151 can rotate with respect to the second plate 152 . . As a result, it is possible to simplify the configuration for adjusting the mounting position in the transport apparatus for heavy objects.

The present invention is not limited to the above embodiments, and any design modifications made by those skilled in the art to such embodiments are also included in the scope of the present invention as long as they have the features of the present invention. . That is, each element provided in the embodiment and its arrangement, material, condition, shape, size, etc. are not limited to those illustrated and can be changed as appropriate. In addition, each element provided in the above embodiment can be combined as long as it is technically possible, and a combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

REFERENCE SIGNS LIST 1 Heavy object mounting device 5 Curved bridge girder 10 First conveying unit 13 First adjusting unit 20 Second conveying unit 21 Second adjusting unit 23 Third adjusting unit 125 First conveying surface 150 Adjusting plate DESCRIPTION OF SYMBOLS 151... 1st plate 152... 2nd plate 131... 1st guide jack 132... 2nd guide jack

Claims (11)

A heavy load mounting apparatus capable of linearly transporting a curved heavy load having a flat main surface and having a curved plane shape of the main surface along a predetermined direction,
a first conveying section on which the curved heavy article is mounted and which conveys the curved heavy article in a first direction along the curved direction of the plan view shape of the main surface;
The first conveying unit carries the curved heavy object along the first direction so that the first conveying unit is mounted and the curved heavy object is linearly conveyed along the predetermined direction. At the same time, a second conveying section that conveys the first conveying section along a second direction;
A heavy load carrying device. The first conveying unit is
a first conveying surface that moves in a third linear direction and on which the curved heavy object is mounted;
At the same time that the curved heavy object is conveyed in the third direction by the first conveying surface so that the curved heavy object is conveyed along the first direction, the curved heavy object is conveyed along the first conveying surface. a first adjustment unit that adjusts the position in
The heavy object mounting apparatus according to claim 1, comprising: In a plan view of the main surface of the curved heavy article being conveyed, the first adjusting section performs a first position adjustment that rotates the curved heavy article along the curving direction with respect to the first conveying surface. 3. The heavy object mounting apparatus according to claim 2, wherein The first conveying unit further has an adjustment plate,
The curved heavy object is mounted on the first conveying surface via the adjustment plate,
the adjustment plate includes a first plate secured to the major surface of the curvilinear weight and a second plate attached to the first plate;
said first plate resting on said second plate so as to be rotatable relative to said second plate;
4. The heavy object mounting apparatus according to claim 3, wherein said first adjustment unit performs said first position adjustment by rotating said first plate with respect to said second plate. The first adjustment unit has a guide jack that can expand and contract in a direction that intersects with the third direction,
The first adjustment unit expands and contracts the guide jack so that the guide jack presses the curved heavy object, and rotates the first plate with respect to the second plate, thereby adjusting the first position. 5. The heavy object mounting apparatus according to claim 4, wherein The second conveying unit has a second adjusting unit including a rotating shaft and a rotating plate on which the first conveying unit is mounted,
6. The second adjustment unit according to claim 1, wherein the second adjustment unit performs a second position adjustment by rotating the first conveying unit about the rotation axis so that the curved heavy load moves linearly. or 1 item. The second transport section further has a third adjustment section on which the second adjustment section is mounted,
The third adjuster moves the second adjuster in a linear direction at the same time that the second adjuster performs the second position adjustment so that the curved heavy load moves linearly along the predetermined direction. perform a third position adjustment to move along a certain fourth direction;
7. The heavy object mounting apparatus according to claim 6, wherein said second transport section moves along said second direction by said second position adjustment and said third position adjustment. The second adjusting unit has a rotating jack that is attached to the rotating plate and that can rotate the rotating plate by expanding and contracting,
8. The heavy object mounting apparatus according to claim 7, wherein said third adjuster has a movable jack capable of reciprocating said second adjuster along said fourth direction by expanding and contracting. The curved heavy object is a bridge girder,
The main surface is the main surface of the flange of the bridge girder,
The heavy object mounting apparatus according to any one of claims 1 to 8, wherein the planar view shape of the main surface is a clothoid curve shape. An adjustment plate for adjusting the mounting position of a heavy object in a conveying device for linearly conveying a heavy object having a flat main surface along a predetermined direction,
The heavy object is mounted on the conveying device via the adjustment plate,
The adjustment plate has a first plate fixed to the main surface of the heavy object and a second plate attached to the first plate,
An adjustment plate, wherein the first plate is mounted on the second plate such that the first plate is rotatable relative to the second plate. the first plate has a planar first side;
the second plate has a second side surface corresponding to the first side surface, which is a convex arcuate surface or a concave arcuate surface;
11. The adjustment plate of claim 10, wherein said first plate rotates relative to said second plate when said first side slides into contact with said second side due to an external force.

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