JP7561392B2 - Apparatus and method for adjusting the position of a heavy object - Google Patents

Description

The present invention relates to a position adjustment device and method for heavy objects such as bridge girders, and aims to miniaturize the device and improve the efficiency of position adjustment work. More specifically, the present invention relates to a position adjustment device and method suitable for adjusting the position of large and heavy bridge girders and the like using multiple position adjustment devices simultaneously.

Large and complex steel structures such as bridge girders and bridges can be temporarily assembled in a factory or on-site yard, and then set and joined in the designated position to shorten the construction period. For this ground assembly, in the case of bridge girders, the structure is divided into several blocks, 2 to 5 blocks are temporarily placed on a ground assembly platform, and the blocks are connected to each other with bolts for ground assembly. To align the connecting bolts, adjustments are required in three directions: the height of the bridge girders (Z), the bridge axis (X), and the perpendicular angle to the bridge axis (Y), and position adjustment jacks corresponding to the shape and weight of the heavy objects have been used. A similar method has also been used for girder position adjustments, which adjust existing bridge girders and newly erected bridge girders overall. Since one block supporting a large and heavy bridge girder 10 mainly has four fulcrums, four sets of adjustment devices are used, and the basic rule is that all four units operate simultaneously, but the basic rule is that the adjustments in the three directions of X, Y, and Z are made by linear movement in each direction.

As an apparatus for performing ground assembly work for heavy objects such as bridge girders and adjusting the position of girders on bridge piers, a position adjustment apparatus 13 as shown in FIG. 10 is known (Patent Document 1).
In Figure 10, this position adjustment device 13 is configured by incorporating side plates 14b on both sides of a base plate 14a to form a jack support stand 14, and placing an annular stand 15 with a sliding plate 16 attached to its bottom so that it can slide freely on top of the base plate 14a, fitting a vertical jack 17 consisting of a cylinder 17a and a rod 17b into this annular stand 15, and attaching a horizontal jack 19 consisting of a cylinder 19a and a rod 19b to a jack bracket 18 fixed to the side plate 14b.

To adjust the position of the bridge girder 10 so that it can be placed on the shoe seat 12 of the bridge pier 11 using this position adjustment device 13, the position adjustment device 13 is installed near the shoe seat 12 as shown in Fig. 9. Since one block supporting the bridge girder 10 mainly has four fulcrums, four sets of this position adjustment device 13 are used. For each set of four, a middle support plate 21 is interposed between the vertical jack 17 and the bottom of the bridge girder 10, and the bridge girder 10 is lifted by the cylinder 17a and the rod 17b, and the rod 19b of the horizontal jack 19 is abutted against the annular frame 15, and the bridge girder 10 is moved by the horizontal jack 19 toward the shoe seat 12 while sliding on the sliding plate 16 under the annular frame 15. Since the moving distance and moving direction are different for each set, the adjustment in the three directions of X, Y, and Z is based on linear movement in each direction.
The bridge girder 10 is placed in three directions, X, Y, and Z, by moving linearly in each direction, and when the sole plate 20 of each set of the bridge girder 10 reaches the position of the shoe seat 12, the rod 17b of the vertical jack 17 is lowered so that the sole plate 20 is positioned on the shoe seat 12.

JP 2021-134538 A.

The conventional position adjustment device has the following problems.
(1) As mentioned above, one block supporting the large and heavy bridge girder 10 has multiple fulcrums. Therefore, multiple sets of adjustment devices (four units) were used, and all four units were operated simultaneously. Adjustments in the three directions, X, Y, and Z, were basically made by linear movement in each direction.
Specifically, four position adjustment devices 13 as shown in FIG. 9 are installed on the left and right piers 11, two each at positions corresponding to the bottom corners of both ends of the bridge girder 10. The long bridge girder 10 is placed in a temporary position on these four position adjustment devices 13. At this time, the position of the bridge girder 10 placed at a slight angle is to be adjusted. First, in order to adjust the position parallel to the X-axis, the horizontal jack 19 on the pier 11 on the side with the larger deviation is attached to the jack support stand 14 in the Y-axis direction. The horizontal jack 19 on the pier 11 on the side with the smaller deviation is set to a free hydraulic state. In this state, the horizontal jack 19 on the pier 11 on the side with the larger deviation is adjusted in one direction to make the long bridge girder 10 parallel to the X-axis. If the bridge girder 10 is parallel to the X-axis but still needs to be adjusted in another direction, the direction of the horizontal jack 19 on the jack support stand 14 is changed each time and the same adjustment is made. Thus, the horizontal jack 19 is a one-way jack for transportation, and when changing the direction, the horizontal jack 19 must be turned and reattached to the other side of the base plate 14a. Not only is this reattachment work troublesome, but because the horizontal jack 19 protrudes from the jack support stand 14, there are problems with the horizontal jack 19 interfering with the surrounding components and equipment such as the shoe seat 12 and being unable to be attached if the horizontal jack 19 is changed in direction while the vertical jack 17 is still supporting the weight of the bridge girder 10.
(2) There are position adjustment devices that are not one-way adjustment devices as described above, but devices that can be adjusted in three directions: X, Y, and Z. However, the overall external dimensions of existing three-way adjustment devices are large, and not only cannot be used in narrow places such as on bridge piers, but when adjusting the position of a single bridge girder using multiple position adjustment devices, the directions and amounts of movement are different for each device, so it is not possible to adjust the position by moving diagonally by simultaneously operating the X-axis and Y-axis directions; the X-axis and Y-axis directions must be operated individually, one at a time, resulting in extremely poor workability.
(3) In the ground assembly, many blocks are assembled, so the work is repeated, and it is necessary to repurpose the adjustment jacks, and the installation site is moved using a crane, etc. Therefore, there was a demand for something that could be easily moved to the installation site and did not take much time for cleaning up, etc.

To provide a device that can adjust the bridge axis, height, and plane in three directions while the bridge is jacked up without changing the device, and that can improve workability in narrow spaces such as bridge piers by making the entire device compact and separating the three-way adjustment device into separate devices for each direction and allowing them to be assembled.
The aforementioned adjustment in three directions, bridge axis, height, and plane, refers to adjustment in the bridge axis (X-axis) direction, adjustment in the height (Z-axis) direction, as well as adjustment in the plane direction by using a rotating device at the intersection of the X-axis and Y-axis to change the central angle in the Y-axis direction and setting the Y-axis at an angle other than a right angle to the X-axis (including parallel to the X-axis).

The weight position adjustment device of the present invention comprises:
an X-axis direction adjustment device 22 capable of adjusting a position in the X-axis direction;
A Y-axis direction adjustment device 23 is placed on the X-axis direction adjustment device 22 and is capable of adjusting its position in the Y-axis direction;
a rotation device 24 provided between the X-axis direction adjustment device 22 and the Y-axis direction adjustment device 23 for changing a central angle of the Y-axis direction of the Y-axis direction adjustment device 23;
The Y-axis direction adjustment device 23 is provided on top of the Z-axis direction adjustment device 25 for adjusting the position in the Z-axis direction. Each device can be disassembled and easily transported and assembled by hand without using heavy machinery such as a crane.

More specifically, the X-axis direction adjustment device 22 comprises a first base plate 26, a first moving plate 27 slidably disposed on the first base plate 26, and an X-axis direction jack 28 having one end fixed to the first base plate 26 and the other end fixed to the first moving plate 27, and the X-axis direction jack 28 allows the first moving plate 27 to be moved freely in the X-axis direction.
The Y-axis direction adjustment device 23 comprises a second base plate 34, a second moving plate 35 which is slidably mounted on the second base plate 34, and a Y-axis direction jack 36 having one end fixed to the second base plate 34 and the other end fixed to the second moving plate 35, and the Y-axis direction jack 36 allows the second moving plate 35 to be moved freely in the Y-axis direction.
The rotating device 24 comprises a rotating jig 43 attached to the upper surface of the first moving plate 27, and a disk 42 attached to the lower surface of the second substrate 34 and fitted into the rotating jig 43 to rotate.
The Z-axis direction adjustment device 25 comprises a vertical jack support plate 50 attached on the second moving plate 35, and a vertical jack 49 placed on the vertical jack support plate 50 and movable back and forth in the Z-axis direction.
The rotating device 24 attaches the disk 42 to the upper surface of the first moving plate 27,
The rotating jig 43 may be attached to the lower surface of the second substrate 34 .

The X-axis jack 28 is provided facing one side edge portion of the first base plate 26 and the first moving plate 27, and a cylinder 28a of the X-axis jack 28 is fixed to the first base plate 26, and a rod 28b of the X-axis jack 28 is fixed to the first moving plate 27,
The Y-axis jack 36 is arranged facing one side edge of the second base plate 34 and the second moving plate 35, and the cylinder 36a of the Y-axis jack 36 is fixed to the second base plate 34, and the rod 36b of the Y-axis jack 36 is fixed to the second moving plate 35.Since the horizontal jack 19 does not protrude like in the conventional position adjustment device 13, the device can be made compact.

The X-axis jacks 28 may be provided facing both side edges of the first base plate 26 and the first moving plate 27, respectively, with the cylinders 28a of each of the X-axis jacks 28 fixed to both sides of the first base plate 26 and the rods 28b of each of the X-axis jacks 28 fixed to both sides of the first moving plate 27.
The Y-axis jacks 36 may be respectively arranged facing both side edges of the second base plate 34 and the second moving plate 35, with the cylinders 36a of each Y-axis jack 36 fixed to both sides of the second base plate 34 and the rods 36b of each Y-axis jack 36 fixed to both sides of the second moving plate 35.

The disk 42 of the rotation device 24 is characterized in that it allows the Y-axis of the Y-axis direction adjustment device 23 to be changed to a predetermined central angle.

A guide rail 31 and a sliding plate 33 are attached to the upper surface of the first substrate 26, and a slide plate 32 that moves in contact with the sliding plate 33 is provided on the lower surface of the first moving plate 27;
A guide rail 39 and a sliding plate 41 are attached to the upper surface of the second base plate 34, and a slide plate 40 that moves in contact with the sliding plate 41 is provided on the lower surface of the second moving plate 35.

The X-axis direction adjustment device 22, the Y-axis direction adjustment device 23, the rotation device 24, and the Z-axis direction adjustment device 25 are connected to each other with bolts in a separable manner.

The disk 42 is a toothed disk 42a that is driven by a motor 57, and this toothed disk 42a is rotatably fitted to the rotating jig 43, and the toothed disk 42a is meshed with a motor gear 59 of the motor 57, so that the angle of the toothed disk 42a can be adjusted by the motor 57.

A position adjustment method using a plurality of position adjustment devices, each of which comprises an X-axis adjustment device 22 capable of adjusting its position in the X-axis direction, a Y-axis adjustment device 23 placed on the X-axis adjustment device 22 and capable of adjusting its position in the Y-axis direction, a rotation device 24 provided between the X-axis adjustment device 22 and the Y-axis adjustment device 23 for changing the central angle of the Y-axis direction of the Y-axis adjustment device 23, and a Z-axis adjustment device 25 provided on the Y-axis adjustment device 23 for adjusting the position of the weight 10 placed thereon in the Z-axis direction,
a first step of installing the position adjustment device at a plurality of fulcrums on a lower surface of the weight 10;
a second step of setting the position adjustment device for one of the plurality of fulcrums as a reference fulcrum for only rotating the weight;
and a third step of adjusting the position of the weight by rotating the position adjustment devices of the remaining fulcrums together with the weight around the position adjustment device of the reference fulcrum and adjusting their positions in the XY directions.

The method is characterized in that after the third step, a fourth step is included in which the position of the weight 10 is adjusted in the X-Y-Z directions as a whole by all of the position adjustment devices, including the position adjustment device of the reference fulcrum.

According to the invention described in claim 1,
An X-axis direction adjustment device capable of adjusting a position in the X-axis direction;
a Y-axis direction adjustment device that is placed on the X-axis direction adjustment device and is capable of adjusting its position in the Y-axis direction;
a rotation device provided between the X-axis direction adjustment device and the Y-axis direction adjustment device for changing a central angle of the Y-axis direction adjustment device;
and a Z-axis direction adjustment device that is provided on top of the Y-axis direction adjustment device and adjusts the position of a weight placed on it in the Z-axis direction. Therefore, when multiple sets of adjustment devices are used to support one block that supports a weight at multiple fulcrums, the Y-axis direction adjustment device can be rotated and moved with a rotating device, making it possible to adjust the bridge axis, height, and plane in three directions while it is jacked up without having to change devices.
In addition, when a heavy load is supported at multiple fulcrums using multiple sets of adjustment devices, by designating one of the fulcrums as the reference fulcrum, the positions of the other fulcrums can be adjusted in a single operation by moving all of the fulcrums of all sets diagonally in different vector directions of the X and Y axes, rather than by adjusting the X and Y axes once for each fulcrum, thereby improving work efficiency.
The entire device can be made compact, and the three-way device can be separated and assembled in one direction at a time, making it easier to transport and assemble in narrow spaces such as bridge piers.

According to the invention described in claim 2,
the X-axis direction adjustment device includes a first base plate, a first moving plate slidably provided on the first base plate, and an X-axis direction jack having one end fixed to the first base plate and the other end fixed to the first moving plate, the first moving plate being movable in the X-axis direction by the X-axis direction jack;
the Y-axis direction adjustment device includes a second base plate, a second moving plate slidably provided on the second base plate, and a Y-axis direction jack having one end fixed to the second base plate and the other end fixed to the second moving plate, and the second moving plate is provided to be movable in the Y-axis direction by the Y-axis direction jack;
the rotating device includes a rotating jig attached to an upper surface of the first moving plate, and a disk attached to a lower surface of the second substrate and fitted to the rotating jig to rotate;
The Z-axis adjustment device consists of a vertical jack support plate attached to the second movable plate and a vertical jack placed on this vertical jack support plate and moving back and forth in the Z-axis direction. Therefore, the X-axis jack and the Y-axis jack do not protrude from the main body of the device. Therefore, even if the orientation of the Y-axis adjustment device is changed while the vertical jack is supporting the load of a bridge girder, etc., the Y-axis jack will not interfere with surrounding components or equipment such as the shoe seat.

According to claim 3,
The X-axis jack is arranged facing one side edge of the first base plate and first moving plate, the cylinder of the X-axis jack is fixed to the first base plate and the rod of the X-axis jack is fixed to the first moving plate, and the Y-axis jack is arranged facing one side edge of the second base plate and second moving plate, the cylinder of the Y-axis jack is fixed to the second base plate and the rod of the Y-axis jack is fixed to the second moving plate. Therefore, by having the X-axis jack arranged facing one side edge of the X-axis adjustment device and the Y-axis jack arranged facing one side edge of the Y-axis adjustment device, the device can be made more compact.

According to the invention described in claim 4,
The X-axis direction jacks are provided facing both side edges of the first base plate and the first moving plate, respectively, and cylinders of the X-axis direction jacks are fixed to both sides of the first base plate, and rods of the X-axis direction jacks are fixed to both sides of the first moving plate,
The Y-axis jacks are respectively provided facing both side edges of the second base plate and the second moving plate, and the cylinders of the Y-axis jacks are fixed to both sides of the second base plate and the rods of the Y-axis jacks are fixed to both sides of the second moving plate. Therefore, although the X-axis jack and the Y-axis jack are slightly larger than those provided facing one side edge of the device, they can handle a larger load.

According to the invention described in claim 5,
The disk of the rotating device is configured to change the Y-axis of the Y-axis direction adjustment device to a predetermined central angle, so that the position adjustment range can be adjusted to outside the range where XY is 90 degrees by simply setting the Y-axis of the Y-axis direction adjustment device to an angle other than 90 degrees with respect to the X-axis.

According to the invention described in claim 6,
A guide rail and a sliding plate are attached to the upper surface of the first base, a slide plate that moves in contact with the sliding plate is provided on the underside of the first moving plate, a guide rail and a sliding plate are attached to the upper surface of the second base, and a slide plate that moves in contact with the sliding plate is provided on the underside of the second moving plate, thereby making it possible to smoothly adjust the positions of the first moving plate and the second moving plate.

According to the seventh aspect of the present invention,
The X-axis direction adjustment device, Y-axis direction adjustment device, rotation device, and Z-axis direction adjustment device are connected to each other with bolts in a separable manner, making it easy to assemble and disassemble each device and also easy to install in a narrow space.

According to the invention described in claim 8,
The disk is a toothed disk that is rotatably fitted into the rotating jig and meshed with a motor gear of a motor so that the angle of the toothed disk can be adjusted by the motor. As a result, the rotation of the Y-axis direction adjustment device and a Z-axis direction adjustment device that is provided above it and adjusts the position of a weight placed on it in the Z-axis direction can be automatically controlled.

According to the invention described in claim 9,
A position adjustment method using a plurality of position adjustment devices, each of which includes an X-axis adjustment device capable of adjusting its position in the X-axis direction, a Y-axis adjustment device placed on the X-axis adjustment device and capable of adjusting its position in the Y-axis direction, a rotation device provided between the X-axis adjustment device and the Y-axis adjustment device for changing a central angle of the Y-axis adjustment device in the Y-axis direction, and a Z-axis adjustment device provided on the Y-axis adjustment device for adjusting the position of a weight placed on the Y-axis adjustment device in the Z-axis direction,
a first step of installing the position adjustment device at a plurality of fulcrums on a lower surface of the weight;
a second step of setting the position adjustment device for one of the plurality of fulcrums as a reference fulcrum for only rotating the weight;
and a third step of adjusting the position of the weight load by rotating the position adjustment devices of the remaining fulcrums together with the weight load around the position adjustment device of the reference fulcrum and adjusting their positions in the X-Y directions.Therefore, by setting the position adjustment device of one of the multiple fulcrums as a reference fulcrum that only rotates the weight load, the position adjustment devices of the remaining fulcrums can be simultaneously rotated and adjusted in the X-Y directions to adjust the position of the weight load.

According to the invention described in claim 10,
After the third step, a fourth step is included in which the position of the weight is adjusted in the X-Y-Z directions together by all of the position adjustment devices including the position adjustment device of the reference fulcrum, so that the position of the weight can be adjusted in parallel by simultaneously adjusting the positions of all of the position adjustment devices including the position adjustment device of the reference fulcrum in the X-Y-Z directions.

1 is a plan view showing a first embodiment of a weight position adjustment device and method according to the present invention. FIG. 1 is an explanatory diagram of a movement adjustment range of a weight position adjustment device and method according to the present invention. FIG. FIG. 2 is an exploded perspective view of the X-axis adjustment device 22 and the rotation device 24 of the present invention. FIG. 2 is an exploded perspective view of a Y-axis direction adjustment device 23 and a Z-axis direction adjustment device 25 of the present invention. 4 is an explanatory diagram of a method for adjusting the position of a weight using the weight position adjustment device according to the present invention. FIG. FIG. 6 is a detailed explanatory diagram of FIG. 5 . FIG. 11 is a plan view showing another example of the weight position adjustment device of the present invention, in which two jacks are attached to each of the X-axis direction adjustment device 22 and the Y-axis direction adjustment device 23. 13A and 13B show another example of a rotation device 24 of the present invention to which a motor for rotation is attached, where FIG. 13A is a plan view and FIG. 13B is a cross-sectional view. 1 is a front view showing the position adjustment of a heavy object (bridge girder) 10 by a conventional position adjustment device 13. FIG. FIG. 10 is an exploded perspective view of the position adjustment device 13 in FIG. 9 .

The weight position adjustment device 9 of the present invention is
an X-axis direction adjustment device 22 capable of adjusting a position in the X-axis direction;
A Y-axis direction adjustment device 23 is placed on the X-axis direction adjustment device 22 and is capable of adjusting its position in the Y-axis direction;
a rotation device 24 provided between the X-axis direction adjustment device 22 and the Y-axis direction adjustment device 23 for changing a central angle of the Y-axis direction of the Y-axis direction adjustment device 23;
and a Z-axis direction adjustment device 25 that is provided on the Y-axis direction adjustment device 23 and adjusts the position of the weight 10 placed on it in the Z-axis direction. Each device can be separated, transported, and assembled on site.

More specifically, each device is
The X-axis direction adjustment device 22 includes a first base plate 26, a first moving plate 27 slidably provided on the first base plate 26, and an X-axis direction jack 28 having one end fixed to the first base plate 26 and the other end fixed to the first moving plate 27, and the first moving plate 27 is movable in the X-axis direction by the X-axis direction jack 28.
The Y-axis direction adjustment device 23 includes a second base plate 34, a second moving plate 35 slidably provided on the second base plate 34, and a Y-axis direction jack 36 having one end fixed to the second base plate 34 and the other end fixed to the second moving plate 35. The Y-axis direction jack 36 allows the second moving plate 35 to move in the Y-axis direction.
The rotation device 24 includes a rotation jig 43 attached to the upper surface of the first moving plate 27, and a disk 42 attached to the lower surface of the second substrate 34 and fitted to the rotation jig 43 to rotate.
The Z-axis direction adjustment device 25 comprises a vertical jack support plate 50 attached on the second moving plate 35, and a vertical jack 49 placed on the vertical jack support plate 50 and movable back and forth in the Z-axis direction.
The rotating device 24 attaches the disk 42 to the upper surface of the first moving plate 27,
The rotating jig 43 may be attached to the lower surface of the second substrate 34 .

The X-axis jack 28 is provided facing one side edge portion of the first base plate 26 and the first moving plate 27, and a cylinder 28a of the X-axis jack 28 is fixed to the first base plate 26, and a rod 28b of the X-axis jack 28 is fixed to the first moving plate 27,
The Y-axis direction jack 36 is provided to face one side edge portion of the second base plate 34 and the second moving plate 35, and a cylinder 36a of the Y-axis direction jack 36 is fixed to the second base plate 34, and a rod 36b of the Y-axis direction jack 36 is fixed to the second moving plate 35.
The horizontal jack is provided facing one side edge of the device to make it more compact.
In the X-axis jack 28, the cylinder 28a may be fixed to the first moving plate 27, and the rod 28b may be fixed to the first base plate 26. Also, in the Y-axis jack 36, the cylinder 36a may be fixed to the second moving plate 35, and the rod 36b may be fixed to the second base plate 34.

The X-axis jacks 28 are provided facing both side edges of the first base plate 26 and the first moving plate 27, respectively, and the cylinders 28a of the X-axis jacks 28 are fixed to both sides of the first base plate 26, and the rods 28b of the X-axis jacks 28 are fixed to both sides of the first moving plate 27,
The Y-axis direction jacks 36 are provided facing both side edges of the second base plate 34 and the second moving plate 35, respectively, and the cylinders 36a of the Y-axis direction jacks 36 are fixed to both sides of the second base plate 34, and the rods 36b of the Y-axis direction jacks 36 are fixed to both sides of the second moving plate 35,
Horizontal jacks are provided on both sides of the device to accommodate larger loads.

The disk 42 of the rotation device 24 is configured to change the Y axis of the Y axis direction adjustment device 23 to a predetermined central angle.

A guide rail 31 and a sliding plate 33 are attached to the upper surface of the first substrate 26, and a slide plate 32 that moves in contact with the sliding plate 33 is provided on the lower surface of the first moving plate 27;
A guide rail 39 and a sliding plate 41 are attached to the upper surface of the second base plate 34, and a slide plate 40 that moves in contact with the sliding plate 41 is provided on the lower surface of the second moving plate 35, thereby allowing the weight 10 to be moved to a smoother position.

The X-axis direction adjustment device 22, Y-axis direction adjustment device 23, rotation device 24, and Z-axis direction adjustment device 25 are connected to each other with bolts in a separable manner, making it easy to transport and assemble the device.

The disk 42 is made of a toothed disk 42a, which is rotatably fitted to the rotating jig 43, and the toothed disk 42a is meshed with a motor gear 59 of a motor 57. The motor 57 adjusts the angle of the toothed disk 42a to automatically control its rotation.

A position adjustment method using a position adjustment device including an X-axis adjustment device 22 capable of adjusting its position in the X-axis direction, a Y-axis adjustment device 23 placed on the X-axis adjustment device 22 and capable of adjusting its position in the Y-axis direction, a rotation device 24 provided between the X-axis adjustment device 22 and the Y-axis adjustment device 23 for changing the central angle of the Y-axis direction of the Y-axis adjustment device 23, and a Z-axis adjustment device 25 provided on the Y-axis adjustment device 23 for adjusting the position of the weight 10 placed thereon in the Z-axis direction,
a first step of installing the position adjustment device at a plurality of fulcrums on a lower surface of the weight 10;
a second step of setting the position adjustment device for one of the plurality of fulcrums as a reference fulcrum for only rotating the weight;
and a third step of adjusting the position of the weight by rotating the position adjustment devices of the remaining fulcrums together with the weight around the position adjustment device of the reference fulcrum and adjusting their positions in the XY directions, thereby adjusting the position of the weight. XY control of the remaining fulcrums except for the reference fulcrum is performed simultaneously.

After the third step, a fourth step is included in which the position of the weight 10 is adjusted in the X-Y-Z directions by all of the position adjustment devices, including the position adjustment device of the reference fulcrum, simultaneously adjusting the positions of all the fulcrums in the X-Y-Z directions.

A first embodiment of the present invention will be described with reference to the drawings.
The weight position adjustment device 9 of the present invention shown in Figure 1 comprises an X-axis adjustment device 22 that adjusts the position in the X-axis direction in Figure 3, a rotation device 24 that is detachably attached onto this X-axis adjustment device 22, a Y-axis adjustment device 23 that is detachably attached onto the rotation device 24 in Figure 4 and adjusts the position in the Y-axis direction, and a Z-axis adjustment device 25 that is detachably attached onto this Y-axis adjustment device 23 and adjusts the position in the Z-axis direction.
The heavy load position adjustment device 9, consisting of the X-axis adjustment device 22, rotation device 24, Y-axis adjustment device 23, and Z-axis adjustment device 25, is configured so that it can be easily transported to the work site, assembled, and disassembled, and can be installed even in narrow spaces, and is also compact so that the first moving plate 27 and the second moving plate 35 do not protrude beyond the jack mounting base 55 as much as possible, even if the X-axis jack 28 and Y-axis jack 36 described later extend or the disk 42 rotates.

3, the X-axis direction adjustment device 22 comprises a substantially square first base plate 26, a first moving plate 27 movably mounted on the first base plate 26, and an X-axis direction jack 28 provided between the first base plate 26 and the first moving plate 27. The X-axis direction jack 28 is provided on the side edge of the first base plate 26 and the first moving plate 27 so that it does not protrude from the jack mounting base 55 even when it expands and contracts, and so that the shape of the entire device is kept compact.
Guide rails 31 are attached to both sides of the upper surface of the first base plate 26, and a low-friction sliding plate 33 is attached between these guide rails 31. A slide plate 32 that slides on the slide plate 33 is attached to the lower surface of the first moving plate 27. MC nylon or the like that slides with low friction with the guide rails 31 is attached to both sides of the slide plate 32. An X-axis direction jack 28 is attached to one side of the first base plate 26 and the first moving plate 27. This X-axis direction jack 28 is composed of a cylinder 28a and a rod 28b, and both ends of the cylinder 28a are attached to the side edge of the first base plate 26 toward the X-axis direction by cylinder attachment fixtures 29. The rod 28b that advances and retreats on the cylinder 28a is attached to the end of the first moving plate 27 by a rod attachment fixture 30.
The rod 28b advances and retreats by inputting and outputting hydraulic pressure from the two pressure oil ports 54 of the cylinder 28a, thereby adjusting the position of the first moving plate 27 in the axial direction (X-axis direction) (for example, a movement amount of 100 mm).
A handle 53 for carrying is attached to the side of the first substrate 26 .

For assembly and disassembly, a rotation jig 43 of the rotation device 24 is fixed on the first moving plate 27 by screwing bolts into a screw hole 47a of the rotation jig 43 and a screw hole 47b of the first moving plate 27. A disk 42 is rotatably fitted into the rotation hole 43a of the rotation jig 43. An angle setting hole 46 is formed on the outer periphery of the disk 42 at intervals of a central angle of 15 degrees. Rotation stop screw holes 44 are drilled horizontally at two locations on the outer surface of the rotation jig 43, and rotation stop screws 45 are inserted into the rotation stop screw holes 44 and further screwed into the angle setting holes 46 of the disk 42 to hold the disk 42 at a predetermined angle.
In the disk 42 shown in FIG. 3, an example is shown in which angle setting holes 46 are formed on the outer periphery at intervals of a central angle of 15 degrees, but these angle setting holes 46 may be formed on the outer periphery at intervals of a central angle other than 15 degrees, and when extremely fine angle adjustment is required, it is also possible not to provide the angle setting holes 46 in the disk 42, but to clamp and fix the outer periphery of the disk 42 with the rotation stop screws 45 on both sides, thereby holding the disk 42 at an arbitrary fine angle.

4, the Y-axis direction adjustment device 23 comprises a second base plate 34, a second moving plate 35 movably mounted on the second base plate 34, and a Y-axis direction jack 36 provided between the second base plate 34 and the second moving plate 35. The Y-axis direction jack 36 is provided on the side edge of the second base plate 34 and the second moving plate 35 so that it does not protrude from the jack mounting base 55 even when it expands and contracts, and so that the overall shape of the device is kept compact.
Guide rails 39 are attached to both sides of the upper surface of the second base plate 34, and a low-friction sliding plate 41 is attached between these guide rails 39. A slide plate 40 that slides on the slide plate 41 is attached to the lower surface of the second moving plate 35. MC nylon or the like that slides with low friction with the guide rails 39 is attached to both sides of the slide plate 40. A Y-axis jack 36 is attached to one side of the second base plate 34 and the second moving plate 35. This Y-axis jack 36 is composed of a cylinder 36a and a rod 36b, and the cylinder 36a is attached to the side edge of the second base plate 34 in a perpendicular direction (Y-axis direction) by a cylinder attachment 37. The rod 36b is attached to the second moving plate 35 by a rod attachment 38.
The rod 36b advances and retreats by inputting and outputting hydraulic pressure from two pressure oil ports 54 of the cylinder 36a, thereby adjusting the position of the second moving plate 35 in the perpendicular direction (Y-axis direction) (for example, a movement amount of 50 mm).
The disk 42 is fixed at the center position of the underside of the second substrate 34 (a position that coincides with the center position when a vertical jack 49 described later is in its initial position) by screwing a fixing screw into the screw hole 48 of the disk 42.
A handle 53 for carrying is attached to the side of the second substrate 34 .

4, the Z-axis direction adjustment device 25 has an annular frame 51 attached on a vertical jack support plate 50, and a vertical jack 49 fitted to the annular frame 51. The vertical jack 49 is made up of a cylinder 49a and a rod 49b, and the cylinder 49a is provided with a handle 53 and a pressure oil port 54.
The vertical jack support plate 50 of the Z-axis direction adjustment device 25 is attached by inserting a bolt into the screw hole 52 a and the screw hole 52 b of the second moving plate 35 of the Y-axis direction adjustment device 23 .

The X-axis adjustment device 22, rotation device 24, Y-axis adjustment device 23, and Z-axis adjustment device 25 configured as described above are stacked in sequence and connected together by screws in a manner that allows them to be freely attached and detached, thereby forming the weight position adjustment device 9 of the present invention.
The plan view of Figure 1, which shows the weight position adjustment device 9, shows an example in which the fixed position of the disk 42 is held by a rotation stop screw 45 and installed on a jack stand 55 so that the movement direction of the X-axis adjustment device 22 (X-axis direction) and the movement direction of the Y-axis adjustment device 23 (Y-axis direction) move in directions perpendicular to each other.

The operation of the weight position adjustment device 9 configured as above will be described. The operation when a plurality of weight position adjustment devices 9 of the present invention are used to adjust the position of the bridge girder 10 will be described later.
1, for convenience of explanation, the initial state (neutral position) of the weight position adjustment device 9 is defined as a state in which the X-axis jack 28 of the X-axis adjustment device 22 and the Y-axis jack 36 of the Y-axis adjustment device 23 are contracted, i.e., the first moving plate 27 of the X-axis adjustment device 22 is located at the left end in the figure, and the second moving plate 35 of the Y-axis adjustment device 23 is located at the top end in the figure. The vertical jack 49 is located at the intersection (center point O) of the X-axis and the Y-axis. In this state, when the rotation stop screw 45 is screwed into the rotation stop screw hole 44 and the angle setting hole 46, the X-axis of the X-axis adjustment device 22 and the Y-axis of the Y-axis adjustment device 23 are fixed at a right angle (90 degrees).
The initial state (neutral position) in which the weight position adjustment device 9 can move 360 degrees refers to the intersection (point O0 in Figure 2) of the intermediate position of the movement amount of the first moving plate 27 of the X-axis adjustment device 22 and the intermediate position of the movement amount of the second moving plate 35 of the Y-axis adjustment device 23, but in the present invention, the state at the center point O is defined as the initial state (neutral position).

When the X-axis direction adjustment device 22 and the Y-axis direction adjustment device 23 are at 90 degrees (the disk 42 is not rotated), in the initial state, the vertical jack 49 is at the center position O in Fig. 2. From this initial state, the vertical jack 49 carrying the bridge girder 10 is moved by operating the X-axis direction jack 28 of the X-axis direction adjustment device 22 and the Y-axis direction jack 36 of the Y-axis direction adjustment device 23.
To move the position of the bridge girder 10 to point P(x, y) in Figure 2, the X-axis jack 28 and the Y-axis jack 36 are extended or contracted so that the movement distance by the X-axis adjustment device 22 is x and the movement distance by the Y-axis adjustment device 23 is y, and the position P(x, y) of the bridge girder 10 can be adjusted within the range of the rectangle abcd.

Next, the case where the disk 42 is rotated will be described. The vertical jack 49 is placed in an unloaded state and the disk 42 of the rotation device 24 is rotated a predetermined angle. If the vertical line extending downward from the center point O is set as the reference Y-axis in the initial state, the Y1-axis is set at a position rotated 45 degrees counterclockwise from this reference Y-axis, and the rotation stop screw 45 is screwed into the rotation stop screw hole 44 and the angle setting hole 46 to be fixed.
Then, the Y axis of the Y axis direction adjustment device 23 becomes the Y1 axis line passing from the center point O to point h in Fig. 2, and the movement distance of the Y axis direction adjustment device 23 along the Y1 axis line is up to the circumference with a radius of (O-h). Therefore, in Fig. 2, the parallelogram formed by points d(O), h, g, and a is the range in which the position of the weight position adjustment device 9 can be adjusted. In other words, by making the Y axis of the Y axis direction adjustment device 23 the Y1 axis line, it is possible to move to the position of point Q1 (within the range of triangle amg) protruding from the rectangle abcd.

Similarly, the disk 42 of the rotation device 24 is set, for example, at 300 degrees (Y2 axis) from the reference Y axis, and the rotation stop screw 45 is screwed into the rotation stop screw hole 44 and the angle setting hole 46 and fixed.
Then, the Y axis of the Y axis direction adjustment device 23 becomes the Y2 axis line passing from the center point O to the point i in Fig. 2, and the movement distance of the Y axis direction adjustment device 23 along the Y2 axis line is up to the circumference with a radius of (O-i). Therefore, in Fig. 2, the parallelogram formed by the point d(O), point i, point j, and point a is the position adjustable range of the weight position adjustment device 9, and it can move to the position of the point Q2 (within the range of the triangle din) protruding from the rectangle abcd.

Similarly, the disk 42 of the rotating device 24 is set, for example, at 90 degrees (Y3 axis) from the reference Y axis and fixed so as to overlap the X axis.
Then, the range in which the position of the weight position adjustment device 9 can adjust is limited only by the linear movement between the lines d-a of the X-axis adjustment device 22 and the linear movement between the lines a-e of the Y-axis adjustment device 23.
Furthermore, when it is set to 270 degrees (Y4 axis) from the reference Y axis and fixed so as to overlap on the X axis, the range in which the position of the weight position adjustment device 9 can be adjusted is limited to the linear movement of the X-axis direction adjustment device 22 between lines d-a and the linear movement between lines a-f, which is the sum of the linear movement between lines d-f.
Similarly, when the disk 42 of the rotation device 24 is inverted 180 degrees (Y5 axis) from the reference Y axis and fixed, the weight position adjustment device 9 can adjust the position within the range of the rectangle alkd.
The same applies when other angles are set.

An example of adjusting the position of a bridge girder using four weight position adjusting devices 9 according to the present invention will be described with reference to Figs.
In Figure 5, a new bridge girder 10 is to be installed between the existing girders 56, 56 of two bridge piers 11. Jack platforms 55 are placed on each of the two piers 11 at four supporting points A, B, C, and D, and a weight position adjustment device 9 is set on top of the jacks. The new bridge girder 10 is transported by a crane or other heavy machinery, and the four corners of the bridge girder 10 are placed on the vertical jacks 49 of the weight position adjustment device 9. At this time, it is assumed that an angular misalignment has occurred between the bridge girder 10 and the existing girder 56, as shown by the solid line.

6, which is a schematic enlargement of the four supports A, B, C, and D in Fig. 5, the support A, which does not require position adjustment or has the least positional deviation, is set as a fixed point, and the positions of the other three supports B, C, and D are adjusted. The disk 42 of the rotation device 24 constituting the device 9 for adjusting the position of the weight of the support A is made rotatable by removing the rotation stop screw 45.
In this state, in order to adjust the newly constructed bridge girder 10 to a position parallel to the existing girder 56, the bridge girder 10 is rotated by angle θ around fulcrum A, so that the vertical jack 49 at fulcrum B is adjusted diagonally to the position of vertical jack _49-1 so as to move the X-axis direction adjustment device 22 a distance x1 to the left in the figure and the Y-axis direction adjustment device 23 a distance y1 upward in the figure, the vertical jack 49 at fulcrum C is adjusted diagonally to the position of vertical jack _49-2 so as to move the X-axis direction adjustment device 22 a distance x2 to the left in the figure and the Y-axis direction adjustment device 23 a distance y2 upward in the figure, and the vertical jack 49 at fulcrum D is adjusted diagonally to the position of vertical jack 49-3 so as to move the X-axis direction adjustment device ₂₂ a distance x3 to the right in the figure and the Y-axis direction adjustment device 23 a distance y3 upward in the figure.
At this time, the support point A rotates by an angle θ from the initial position (O), and with this rotation, the positions of the vertical jacks 49 at the other three supports B, C, and D all move synchronously and diagonally to the vertical jacks 49 ₁ , 49 ₂ , and 49 ₃ , respectively. As a result, the bridge girder 10 is adjusted from the solid line position to the two-dot chain line position.
In this way, when four sets of adjustment devices 9 are used to support a weight 10 with multiple fulcrums A, B, C, and D, by making any one of the fulcrums A a rotatable reference fulcrum, the positions of the other fulcrums B, C, and D can be adjusted in one operation by moving the intersections of the X and Y axes of all of the fulcrums B, C, and D diagonally all at once, rather than adjusting the X and Y axes once for each fulcrum, thereby improving work efficiency.

When the bridge girder 10 at the two-dot chain line position requires position adjustment in the X-axis and Y-axis directions, including fulcrum A, in relation to the existing girder 56, the positions of the four fulcrums A, B, C, and D are simultaneously adjusted in the X-axis direction, and then the positions of the four fulcrums A, B, C, and D are adjusted in the Y-axis direction. In addition, when vertical adjustment of the four fulcrums A, B, C, and D is required, the vertical jack 49 is controlled to perform adjustment in the Z direction.

In the explanation of FIGS. 5 and 6, an example was given in which the disk 42 of the rotation device 24 of the three fulcrums B, C, and D is fixed at 90 degrees between the X-axis and the Y-axis, so the position adjustment range at the three fulcrums B, C, and D is represented by the rectangle represented by the square a, b, c, and d in FIG. 2.
Here, when the disk 42 of the rotating device 24 of the three fulcrums B, C, and D is set so that the X-axis and the Y-axis are at 45 degrees (Y1-axis in the figure), the position adjustment range of the three fulcrums B, C, and D is the parallelogram aghd in Figure 2. The same applies when the other angles are set.

The heavy load position adjustment device 9 of the present invention shown in FIG. 1 shows an example in which the X-axis direction adjustment device 22 and the Y-axis direction adjustment device 23 are provided with one X-axis direction jack 28 and one Y-axis direction jack 36 only on one side edge portion, respectively, and the overall dimensions in this example are, for example, 342 mm x 365 mm in length and width, with a vertical load of 300 kN, a horizontal load of 25 kN, a position adjustment movement distance in the X-axis direction of 100 mm, and a position adjustment movement distance in the Y-axis direction of 50 mm.
1, two X-axis jacks 28, 28 and two Y-axis jacks 36, 36 can be provided on both sides of the X-axis adjustment device 22 and the Y-axis adjustment device 23, as shown in Fig. 7. In this example where jacks are provided on both sides, the overall dimensions can be, for example, 430 mm x 406 mm, a vertical load of 750 kN, a horizontal load of 50 kN, a position adjustment movement distance in the X-axis direction of 100 mm, and a position adjustment movement distance in the Y-axis direction of 50 mm.
Whether the example in FIG. 1 or the example in FIG. 7 is used can be selected depending on the purpose of use.
The above dimensions are not limited to this example, but are set appropriately depending on the purpose of use.

In the above embodiment, the disk 42 of the rotating device 24 is rotated manually with the vertical jack 49 unloaded. However, it can also be driven by a motor 57, an example of which is shown in FIGS. 8(a) and 8(b).
8(a) and 8(b), the toothed disk 42a is rotatably fitted into the rotation hole 43a of the rotation jig 43. A motor 57 is attached to the side edge of the rotation jig 43 by a motor support frame 60. A motor gear 59 is fixed to a rotation shaft 58 of the motor 57, and the motor gear 59 is connected to the toothed disk 42a via a connecting gear 61. The rotation jig 43 is fixedly attached to the first moving plate 27 of the X-axis direction adjustment device 22. It is desirable that the motor 57 is configured so as not to protrude from the jack stand 55.
With this configuration, when the vertical jack 49 is in an unloaded state with no heavy object 10 placed on it, the rotation of the motor 57 rotates the toothed disk 42a via the motor gear 59 and the connecting gear 61, which rotates the vertical jack 49 of the Y-axis direction adjustment device 23 that is integrated with this toothed disk 42a, thereby adjusting the rotational position.
If the weight 10 placed on the vertical jack 49 is light, the vertical jack 49 can be rotated with the weight 10 placed thereon to adjust the rotational position.

9: Position adjustment device for heavy load, 10: Heavy load (bridge girder), 11: Pier, 12: Shoe seat, 13: Position adjustment device, 14: Jack support stand, 14a: Base plate, 14b: Side plate, 15: Ring stand, 16: Sliding plate, 17: Vertical jack, 17a: Cylinder, 17b: Rod, 18: Jack bracket, 19: Horizontal jack, 19a: Cylinder, 19b: Rod, 20: Sole plate, 2 1...middle support plate, 22...X-axis direction adjustment device, 23...Y-axis direction adjustment device, 24...rotation device, 25...Z-axis direction adjustment device, 26...first base plate, 27...first moving plate, 28...X-axis direction jack, 28a...cylinder, 28b...rod, 29...cylinder mounting fixture, 30...rod mounting fixture, 31...guide rail, 32...slide plate, 33...sliding plate, 34...second base plate, 35...second moving plate, 36...Y-axis direction jack,
36a...cylinder, 36b...rod, 37...cylinder attachment, 38...rod attachment, 39...guide rail, 40...slide plate, 41...sliding plate, 42...disk, 42a...toothed disk, 43...rotation jig, 43a...rotation hole, 44...rotation stop screw hole, 45...rotation stop screw, 46...angle setting hole, 47a...screw hole, 47b...screw hole, 48...screw hole, 48a...fixing screw, 49...vertical jack, 49a...cylinder, 49b...rod, 49 ₁ ...vertical jack after adjusting the position of fulcrum B, 49 ₂ ...vertical jack after adjusting the position of fulcrum C, 49 ₃ ...Vertical jack after adjusting the position of fulcrum D, 50...vertical jack support plate, 51...annular stand, 52a...screw hole, 52b...screw hole, 53...handle, 54...pressure oil port, 55...jack mounting base, 56...existing girder, 57...motor, 58...rotating shaft, 59...motor gear, 60...motor support frame, 61...connecting gear.

Claims (10)

An X-axis direction adjustment device capable of adjusting a position in the X-axis direction;
a Y-axis direction adjustment device that is placed on the X-axis direction adjustment device and is capable of adjusting its position in the Y-axis direction;
a rotation device provided between the X-axis direction adjustment device and the Y-axis direction adjustment device for changing a central angle of the Y-axis direction adjustment device;
a Z-axis direction adjustment device provided on the Y-axis direction adjustment device for adjusting the position in the Z-axis direction. the X-axis direction adjustment device includes a first base plate, a first moving plate slidably provided on the first base plate, and an X-axis direction jack having one end fixed to the first base plate and the other end fixed to the first moving plate, the first moving plate being movable in the X-axis direction by the X-axis direction jack;
the Y-axis direction adjustment device includes a second base plate, a second moving plate slidably provided on the second base plate, and a Y-axis direction jack having one end fixed to the second base plate and the other end fixed to the second moving plate, and the second moving plate is provided to be movable in the Y-axis direction by the Y-axis direction jack;
the rotation device includes a rotation jig attached to one of the upper surface of the first moving plate and the lower surface of the second substrate, and a disk attached to one of the lower surface of the second substrate and the upper surface of the first moving plate, and fitted into the rotation jig to rotate;
The position adjustment device for a heavy object as described in claim 1, characterized in that the Z-axis direction adjustment device comprises a vertical jack support plate attached to the second moving plate and a vertical jack placed on this vertical jack support plate and moved back and forth in the Z-axis direction. The X-axis direction jack is provided facing one side edge portion of the first base plate and the first moving plate, a cylinder of the X-axis direction jack is fixed to the first base plate, and a rod of the X-axis direction jack is fixed to the first moving plate,
A heavy object position adjustment device as described in claim 2, characterized in that the Y-axis jack is arranged facing one side edge of the second base plate and the second moving plate, the cylinder of the Y-axis jack is fixed to the second base plate, and the rod of the Y-axis jack is fixed to the second moving plate. The X-axis direction jacks are provided facing both side edges of the first base plate and the first moving plate, respectively, and cylinders of the X-axis direction jacks are fixed to both sides of the first base plate, and rods of the X-axis direction jacks are fixed to both sides of the first moving plate,
The heavy object position adjustment device as described in claim 2, characterized in that the Y-axis jacks are respectively arranged facing both side edges of the second base plate and the second moving plate, the cylinders of each of the Y-axis jacks are fixed to both sides of the second base plate, and the rods of each of the Y-axis jacks are fixed to both sides of the second moving plate. The position adjustment device for a heavy object according to claim 2, characterized in that the disk of the rotating device is adapted to change the Y-axis of the Y-axis direction adjustment device to a predetermined central angle. a guide rail and a sliding plate are attached to an upper surface of the first substrate, and a slide plate that moves in contact with the sliding plate is provided on a lower surface of the first moving plate;
3. The position adjustment device for a weight according to claim 2, further comprising a guide rail and a sliding plate attached to the upper surface of said second base plate, and a slide plate which moves in contact with said sliding plate being provided on the lower surface of said second moving plate. The position adjustment device for a heavy object according to claim 1 or 2, characterized in that the X-axis direction adjustment device, the Y-axis direction adjustment device, the rotation device, and the Z-axis direction adjustment device are connected to each other in a separable manner with bolts. The position adjustment device for a heavy load according to claim 2, characterized in that the disk is a toothed disk, which is rotatably fitted to the rotating jig, the toothed disk is meshed with a motor gear of a motor, and the angle of the toothed disk is adjusted by the motor. A position adjustment method using a plurality of position adjustment devices, each of which includes an X-axis adjustment device capable of adjusting its position in the X-axis direction, a Y-axis adjustment device placed on the X-axis adjustment device and capable of adjusting its position in the Y-axis direction, a rotation device provided between the X-axis adjustment device and the Y-axis adjustment device for changing a central angle of the Y-axis adjustment device in the Y-axis direction, and a Z-axis adjustment device provided on the Y-axis adjustment device for adjusting the position of a weight placed on the Y-axis adjustment device in the Z-axis direction,
a first step of installing the position adjustment device at a plurality of fulcrums on a lower surface of the weight;
a second step of setting the position adjustment device for one of the plurality of fulcrums as a reference fulcrum for only rotating the weight;
and a third step of adjusting the position of the weight object by rotating the position adjustment devices of the remaining fulcrums together with the weight object around the position adjustment device of the reference fulcrum and adjusting their positions in the XY directions to adjust the position of the weight object. The method for adjusting a position of a weight as described in claim 9, further comprising a fourth step of adjusting the position of the weight in the X-Y-Z directions as a whole using all of the position adjustment devices including the position adjustment device of the reference fulcrum after the third step.

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