Apparatus and method for adjusting position of heavy object

Abstract

To greatly shorten the installation and removal time of a plane position adjusting device for a heavy object such as a bridge girder, an adjusting method, and other work processes, to improve efficiency, and to improve the safety of work.SOLUTION: A heavy load 10 is placed on a temporary receiving base 28 on a placing surface 11, and is placed on a temporary receiving base 29 via a vertical jack 31 fixed in the inverse direction to an under surface of the heavy load 10. The horizontal moving device 32 includes a fixed plate 41 placed on the temporary support 29, a movable plate 45 provided on the upper surface of the fixed plate 41 so as to be horizontally movable, a threaded rod 58 fixedly attached to the movable plate 45, and a horizontal jack 59 attached to the fixed plate 41 for horizontally moving the threaded rod 58 together with the movable plate 45.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a device and method for adjusting the horizontal position of a heavy object when jacking down a heavy object such as a bridge girder in bridge construction. [Background technology]

[0002] When adjusting the horizontal position of a heavy object 10 such as a bridge girder during bridge erection work by jacking down the heavy object 10, conventionally, a one-way position adjustment device 12 is installed on a support surface 11 such as a bridge pier or sander material, as shown in Fig. 7. A platform 15 is placed on a support base 13 of this one-way position adjustment device 12 via a sliding member 16, and the heavy object 10 is lifted by a vertical jack 17 on this platform 15, and the horizontal position is adjusted by a horizontal jack 18 attached to a jack bracket 19 of a guide member 14 (Patent Document 1). The method of Figure 7 only allows for position adjustment in one horizontal direction, so when adjusting the position in another horizontal direction, it is necessary to lift the heavy object 10 with the vertical jack 17, place the heavy object 10 on another sandle material (not shown) formed on the support surface 11, lower the vertical jack 17 to release the load of the support surface 11 on the one-way position adjustment device 12, change the position and direction of the one-way position adjustment device 12, and then place the heavy object 10 on the one-way position adjustment device 12 again in that position and adjust the position using the horizontal jack 18.

[0003] In contrast, the omnidirectional position adjustment device 20 shown in FIG. 8 comprises an upper stage 21 having an X-direction horizontal jack 22 placed on a lower stage 23 having a Y-direction horizontal jack 24, and a vertical jack 17 placed on top of that. The X-direction horizontal jack 22 and the Y-direction horizontal jack 24 are driven by an electric circuit 25, and a centralized control device 26 controls a hydraulic circuit 27, thereby enabling position adjustment in all horizontal directions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-134538 [Patent Document 2] Patent No. 7378554 Summary of the Invention [Problem to be solved by the invention]

[0005] The problem to be solved is that, in either the method of Patent Documents 1 or 2, a one-way position adjustment device 12 or an omnidirectional position adjustment device 20 is installed between the heavy load 10 and the placement surface 11 via a sandle material (not shown). When jacking down the heavy load 10, the one-way position adjustment device 12 or the omnidirectional position adjustment device 20 has traditionally been removed. If the one-way position adjustment device 12 shown in Figure 7 is relatively small and lightweight, it may be possible to install and remove it using only human power. However, each time the horizontal position is adjusted, the heavy load 10 must be moved to another sandle material, the vertical jack 17 must be lowered to release the load on the mounting surface 11 of the one-way position adjustment device 12, the position and direction of the one-way position adjustment device 12 must be changed, and then the heavy load 10 must be placed on the one-way position adjustment device 12 again in that position and the position adjusted using the horizontal jack 18. This is a time-consuming and troublesome process, and is dangerous if the work space is narrow or the work is performed at a high altitude.

[0006] Furthermore, in the case of a large and heavy device such as the omnidirectional position adjustment device 20 shown in Fig. 8, manual installation and removal is impossible and requires the use of heavy machinery such as a crane. Furthermore, when the use of heavy machinery such as a crane is not possible due to limitations in the working space, lifting machinery such as a lever block (registered trademark) or a chain block must be used, which poses problems such as requiring a lot of time and being troublesome. Furthermore, even though the omnidirectional position adjustment device 20 shown in FIG. 8 is capable of adjusting the horizontal position in all directions, when changing the direction of the horizontal position adjustment of the heavy object 10 beyond the adjustment limit of the omnidirectional position adjustment device 20, the installation position of the device must be changed or the device must be rotated, which is also a heavy task that takes time and is troublesome whether using human power, heavy machinery such as a crane, or a lifting machine.

[0007] The purpose of this invention is to significantly shorten and improve the efficiency of the work process and safety during the jacking down of heavy objects such as bridge girders in bridge construction by eliminating the work involved in installing and removing devices for adjusting the horizontal position of heavy objects and changing adjustment methods. [Means for solving the problem]

[0008] The position adjustment device for a heavy object of the present invention comprises: A position adjustment device for a heavy object, in which the underside of the heavy object (10) is placed on one temporary support table (28) on a placement surface (11), and the heavy object (10) is placed on the other temporary support table (29) via a cylinder (33) of a vertical jack (31) fixed upside down to the underside of the heavy object (10), and a horizontal movement device (32) for moving the heavy object (10) horizontally is connected to the lower end of a piston rod (34) of the vertical jack (31) that extends and contracts downward, The horizontal movement device 32 is characterized by comprising a fixed plate 41 placed on the other temporary support table 29, a movable plate 45 provided on the upper surface of the fixed plate 41 so as to be freely movable horizontally, a threaded rod 58 fixedly attached to the movable plate 45, and a horizontal jack 59 attached to the fixed plate 41 and moving the threaded rod 58 horizontally together with the movable plate 45.

[0009] A spherical recess 38 is formed on the lower surface of the piston rod 34, and a spherical washer 52 that fits into the spherical recess 38 is provided on the upper part of the movable plate 45.

[0010] A conical swing hole 55 is formed in the spherical washer 52, widening from the center point of the sphere toward the spherical recess 38, and the spherical washer 52 and the piston rod 34 are connected by a connecting bolt 54 inserted through this swing hole 55, and the spherical washer 52 is fitted into the spherical recess 38, making it possible to adjust the tilt of the horizontal movement device 32 in all directions.

[0011] The tip of the threaded rod 58 extending from the movable plate 45 penetrates the center of a piston rod 62 that moves back and forth through a cylinder 63 of the horizontal jack 59 attached to the fixed plate 41 and is fixed to the horizontal jack 59 with a nut 66, so that the horizontal position of the threaded rod 58 can be adjusted in response to the forward and backward movement of the piston rod 62.

[0012] The horizontal jack 59 comprises a first horizontal jack 59 and a second horizontal jack 60, and the threaded rod 58 extends linearly in both directions from the movable plate 45. One end of each tip penetrates the center of a piston rod 62 that moves back and forth through a cylinder 63 of the first horizontal jack 59 attached to one side of the fixed plate 41, and the other end penetrates the center of a piston rod 62 that moves back and forth through a cylinder 63 of the second horizontal jack 60 attached to the other side of the fixed plate 41. The horizontal jack 59 is fixed to either the first horizontal jack 59 or the second horizontal jack 60, while releasing the other, so that the horizontal position of the threaded rod 58 can be adjusted in response to the forward and backward movement of the piston rod 62 on the side to which it is fixed, either the first horizontal jack 59 or the second horizontal jack 60.

[0013] The threaded rod 58 fixedly attached to the movable plate 45 is inserted into a rod insertion groove 51 formed in the center of a rod insertion plate 50 stacked on the movable plate 45, and is fixed to both ends of the movable plate 45 with nuts 64.

[0014] The method for adjusting the position of a weight according to the present invention comprises the steps of: The underside of a heavy load (10) is placed on one temporary support (28) on the placement surface (11), and the heavy load (10) is placed on the other temporary support (29) via a cylinder (33) of a vertical jack (31) fixed upside down to the underside of the heavy load (10), and a horizontal movement device (32) for horizontally moving the heavy load (10) is connected to the lower end of a piston rod (34) of the vertical jack (31) that extends and contracts downward, and the horizontal movement device (32) is a position adjustment device for a heavy load, comprising: a fixed plate (41) placed on the other temporary support (29), a movable plate (45) provided on the upper surface of the fixed plate (41) so as to be horizontally movable, a threaded rod (58) fixedly attached to the movable plate (45), and a horizontal jack (59) attached to the fixed plate (41) and for horizontally moving the threaded rod (58), a step of extending the piston rod 34 downward to lift the weight 10 off the placement surface 11; a step of moving a position of a second nut 67 screwed onto the other end of the threaded rod 58 to set a horizontal position adjustment distance of the weight 10 from the other end of the fixed plate 41; a step of supplying pressure oil to the horizontal jack 59 fixed to one end of the fixed plate 41, and moving the threaded rod 58 inserted into the piston rod 62 in the horizontal jack 59 together with the heavy load 10 by a set horizontal position adjustment distance; The present invention is characterized in that it comprises:

[0015] The underside of the heavy load 10 is placed on one temporary support 28 on the placement surface 11, and the heavy load 10 is placed on the other temporary support 29 via a cylinder 33 of a vertical jack 31 fixed upside down to the other underside of the heavy load 10, and a horizontal movement device 32 for moving the heavy load 10 horizontally is connected to the lower end of a piston rod 34 of the vertical jack 31 that extends and contracts downward. The horizontal movement device 32 comprises a fixed plate 41 placed on the other temporary support 29, a movable plate 45 provided on the upper surface of the fixed plate 41 so as to be horizontally movable, and a movable plate a threaded rod 58 fixedly attached to the movable plate 45, and each tip of the threaded rod 58 extending linearly in both directions from the movable plate 45, one end of which penetrates through the center of a piston rod 62 that moves back and forth through a cylinder 63 of the first horizontal jack 59 attached to one side of the fixed plate 41, and the other end of which penetrates through the center of a piston rod 62 that moves back and forth through a cylinder 63 of the second horizontal jack 60 attached to the other side of the fixed plate 41, a step of extending the piston rod 34 downward to lift the weight 10 off the placement surface 11; a step of moving the position of the second nut 67 of the second horizontal jack 60, of the first and second nuts 67 that fix the first horizontal jack 59 and the second horizontal jack 60 to the fixing plate 41, to set a horizontal position adjustment distance of the heavy object 10; a step of supplying pressure oil to the first horizontal jack 59 on the side where the horizontal position adjustment distance has not been set, and moving the threaded rod 58 inserted into the piston rod 62 in this first horizontal jack 59 together with the heavy load 10 by the set horizontal position adjustment distance; The present invention is characterized in that it comprises:

[0016] a step of lifting the heavy object 10 from the placement surface 11; During the process of setting the horizontal position adjustment distance of the weight 10, An angle adjustment step of rotating and adjusting the horizontal movement device 32 to a desired angle relative to the vertical jack 31 fixed to the weight 10. is added. [Effects of the Invention]

[0017] The position adjustment device for a weight according to claim 1 comprises: A position adjustment device for a heavy object, in which the underside of the heavy object is placed on one temporary support table on a placement surface, and the heavy object is placed on the other temporary support table via a cylinder of a vertical jack fixed upside down to the underside of the heavy object, and a horizontal movement device for horizontally moving the heavy object is connected to the lower end of a piston rod of the vertical jack that extends and contracts downward, The horizontal movement device consists of a fixed plate that is placed on the other temporary support table, a movable plate that is freely movable horizontally on the upper surface of the fixed plate, a threaded rod fixedly attached to the movable plate, and a horizontal jack that is attached to the fixed plate and moves the threaded rod horizontally together with the movable plate, and therefore has the following effects. (1) It is easy to make the device small and lightweight, and it can be installed and removed by hand alone. (2) The horizontal movement device fixes a vertical jack upside down to the underside of the heavy object, so that there is no need to release the load of the supporting surface on the position adjustment device and change the position and direction of the position adjustment device. (3) The work is time-consuming and tedious, and can be done safely even in a narrow work space or at a high altitude.

[0018] According to the invention described in claim 2, A spherical recess is formed on the lower surface of the piston rod, and a spherical washer that fits into the spherical recess is provided on the upper part of the movable plate, so that the horizontal movement device can easily follow the unevenness of the support surface on which it is placed.

[0019] According to the invention described in claim 3, A conical swing hole is formed in the spherical washer, widening from the center point of the sphere toward the spherical recess, and a connecting bolt is inserted through this swing hole to connect the spherical washer to the piston rod. The spherical washer is fitted into the spherical recess, making it possible to adjust the tilt in all directions of the horizontal movement device, and therefore it can accommodate tilt in all directions of 360 degrees.

[0020] According to the invention described in claim 4, The tip of the threaded rod extending from the movable plate passes through the center of the piston rod that moves back and forth through the cylinder of the horizontal jack attached to the fixed plate and is fixed to the horizontal jack with a nut, so that the horizontal position of the threaded rod can be adjusted in response to the forward and backward movement of the piston rod.Therefore, the threaded rod allows the horizontal moving device to accurately and easily adjust the position of a heavy object.

[0021] According to the invention described in claim 5, The horizontal jack consists of a first horizontal jack and a second horizontal jack, and the threaded rod extends linearly in both directions from the movable plate. One end of each tip penetrates the center of the piston rod that moves back and forth through the cylinder of the first horizontal jack attached to one side of the fixed plate, and the other end penetrates the center of the piston rod that moves back and forth through the cylinder of the second horizontal jack attached to the other side of the fixed plate. The threaded rod is fixed to either the first horizontal jack or the second horizontal jack, while the other is released, and the horizontal position of the threaded rod is adjusted in response to the forward and backward movement of the piston rod on the side to which it is fixed, so that the position can be easily adjusted by moving it forward and backward with just one threaded rod, and even if it moves beyond the adjustment limit, it can be easily returned to the correct position.

[0022] According to the invention described in claim 6, The threaded rod fixedly attached to the movable plate is inserted through a rod insertion groove formed in the center of a rod insertion plate stacked on the movable plate and is fixed with nuts at both ends of the movable plate. Therefore, by forming a rod insertion groove in the center of a rod insertion plate stacked on the movable plate, the threaded rod can be stored compactly and position adjustment operation is easy.

[0023] According to the invention described in claim 7, A position adjustment device for a heavy object, in which the underside of the heavy object is placed on one temporary support table on a placement surface, and the heavy object is placed on the other temporary support table via a cylinder of a vertical jack fixed upside down to the underside of the heavy object, and a horizontal movement device for horizontally moving the heavy object is connected to the lower end of a piston rod of the vertical jack that extends and contracts downward, the horizontal movement device comprising a fixed plate placed on the other temporary support table, a movable plate provided on the upper surface of the fixed plate so as to be horizontally movable, a threaded rod fixedly attached to the movable plate, and a horizontal jack attached to the fixed plate and moving the threaded rod in the horizontal direction, extending the piston rod downward to lift the weight off the placement surface; a step of moving a position of a second nut screwed onto the other end of the threaded rod to set a horizontal position adjustment distance of the weight from the other end of the fixed plate; The method comprises a step of supplying pressurized oil to the horizontal jack fixed to one end of the fixed plate, and moving the threaded rod inserted into the piston rod in the horizontal jack together with the heavy object by a set horizontal position adjustment distance, so that the movement distance of the threaded rod can be adjusted by the horizontal jack.

[0024] According to the invention described in claim 8, a horizontal movement device for horizontally moving the heavy object, the underside of which is placed on one temporary support stand on a support surface, and the other temporary support stand via a cylinder of a vertical jack fixed upside down to the other underside of the heavy object; a horizontal movement device for horizontally moving the heavy object connected to the lower end of a piston rod of the vertical jack that extends and contracts downward; the horizontal movement device comprising a fixed plate placed on the other temporary support stand, a movable plate provided on the upper surface of the fixed plate so as to be horizontally movable, a threaded rod fixedly attached to the movable plate, and each tip end of the threaded rod extending linearly in both directions from the movable plate, one end of which penetrates through the center of a piston rod that advances and retreats through a cylinder of the first horizontal jack attached to one side of the fixed plate, and the other end of which penetrates through the center of a piston rod that advances and retreats through a cylinder of the second horizontal jack attached to the other side of the fixed plate; extending the piston rod downward to lift the weight off the placement surface; a step of moving the position of the second nut of the second horizontal jack, of first and second nuts that fix the first horizontal jack and the second horizontal jack to the fixing plate, to set a horizontal position adjustment distance of the heavy object; a step of supplying pressure oil to the first horizontal jack on the side where the horizontal position adjustment distance has not been set, and moving the threaded rod inserted into the piston rod in this first horizontal jack together with the heavy object by the set horizontal position adjustment distance; Therefore, the position of the forward and reverse horizontal position adjustment distance of the heavy object can be adjusted with a simple configuration.

[0025] According to the invention described in claim 9, a step of lifting the heavy object from the placement surface; During the step of setting the horizontal position adjustment distance of the heavy object, an angle adjustment step of rotating and adjusting the horizontal movement device to a desired angle relative to the vertical jack fixed to the heavy object; Since the angle can be easily adjusted without using heavy machinery such as a crane, even in high places or in places with narrow working spaces. [Brief explanation of the drawings]

[0026] [Figure 1] 1 shows a first embodiment of the heavy object position adjustment device and method according to the present invention, in which (a) is an explanatory diagram of the state in which the heavy object position adjustment device 30 is attached to the underside of the heavy object 10 and the horizontal movement device 32 is suspended above the temporary support base 29, and (b) is an explanatory diagram of the state in which the uppermost temporary support base 29a of the temporary support bases 29 below the horizontal movement device 32 has been removed, and the horizontal movement device 32 of the heavy object position adjustment device 30 has been brought into close contact with the temporary support base 29 and the heavy object 10 has been lifted by the vertical jack 31. [Figure 2] FIG. 4 is a cross-sectional view taken along line AA in FIG. 3, showing a first embodiment of a weight position adjusting device 30 according to the present invention. [Figure 3]1 is a cross-sectional view taken along line BB in FIG. 2, showing a first embodiment of a weight position adjusting device 30 according to the present invention. [Figure 4] 1 is a perspective view showing a first embodiment of a weight position adjusting device 30 according to the present invention. [Figure 5] 1 is an exploded perspective view showing a first embodiment of a horizontal movement device 32 constituting a weight position adjustment device 30 according to the present invention. [Figure 6] 1 is a perspective view showing a state in which a horizontal movement device 32 constituting a heavy object position adjustment device 30 according to the present invention is rotated relative to a vertical jack 31. FIG. [Figure 7] FIG. 1 is a cross-sectional view of a conventional one-way position adjusting device 12 disclosed in Patent Document 1. [Figure 8] FIG. 1 is a cross-sectional view of a conventional omnidirectional position adjustment device 20 disclosed in Patent Document 2. DETAILED DESCRIPTION OF THE INVENTION

[0027] The present invention provides A position adjustment device for a heavy object, in which the underside of the heavy object (10) is placed on one temporary support table (28) on a placement surface (11), and the heavy object (10) is placed on the other temporary support table (29) via a cylinder (33) of a vertical jack (31) fixed upside down to the underside of the heavy object (10), and a horizontal movement device (32) for moving the heavy object (10) horizontally is connected to the lower end of a piston rod (34) of the vertical jack (31) that extends and contracts downward, The horizontal movement device 32 comprises a fixed plate 41 placed on the other temporary support table 29, a movable plate 45 provided on the upper surface of the fixed plate 41 so as to be freely movable horizontally, a threaded rod 58 fixedly attached to the movable plate 45, and a horizontal jack 59 attached to the fixed plate 41 and moving the threaded rod 58 horizontally together with the movable plate 45.

[0028] A spherical recess 38 is formed on the lower surface of the piston rod 34, and a spherical washer 52 that fits into the spherical recess 38 is provided on the upper part of the movable plate 45.

[0029] A conical swing hole 55 is formed in the spherical washer 52, widening from the center point of the sphere toward the spherical recess 38. A connecting bolt 54 is inserted through this swing hole 55 to connect the spherical washer 52 to the piston rod 34, and the spherical washer 52 is fitted into the spherical recess 38, making it possible to adjust the tilt of the horizontal movement device 32 in all directions.

[0030] The tip of the threaded rod 58 extending from the movable plate 45 passes through the center of a piston rod 62 that moves back and forth through a cylinder 63 of the horizontal jack 59 attached to the fixed plate 41, and is fixed to the horizontal jack 59 with a nut 66, adjusting the horizontal position of the threaded rod 58 in response to the forward and backward movement of the piston rod 62.

[0031] The horizontal jack 59 consists of a first horizontal jack 59 and a second horizontal jack 60, and the tip of each of the threaded rods 58 extending linearly in both directions from the movable plate 45 has one end penetrating through the center of a piston rod 62 that moves back and forth through a cylinder 63 of the first horizontal jack 59 attached to one side of the fixed plate 41, and the other end penetrating through the center of a piston rod 62 that moves back and forth through a cylinder 63 of the second horizontal jack 60 attached to the other side of the fixed plate 41. The horizontal jack 59 is fixed to either the first horizontal jack 59 or the second horizontal jack 60, while releasing the other, and adjusts the horizontal position of the threaded rod 58 in response to the forward and backward movement of the piston rod 62 on the side to which it is fixed, either the first horizontal jack 59 or the second horizontal jack 60.

[0032] The threaded rod 58 fixedly attached to the movable plate 45 is inserted through a rod insertion groove 51 formed in the center of a rod insertion plate 50 stacked on the movable plate 45, and is fixed at both ends of the movable plate 45 by nuts 64.

[0033] The underside of a heavy load (10) is placed on one temporary support (28) on the placement surface (11), and the heavy load (10) is placed on the other temporary support (29) via a cylinder (33) of a vertical jack (31) fixed upside down to the underside of the heavy load (10), and a horizontal movement device (32) for horizontally moving the heavy load (10) is connected to the lower end of a piston rod (34) of the vertical jack (31) that extends and contracts downward, and the horizontal movement device (32) is a position adjustment device for a heavy load, comprising: a fixed plate (41) placed on the other temporary support (29), a movable plate (45) provided on the upper surface of the fixed plate (41) so as to be horizontally movable, a threaded rod (58) fixedly attached to the movable plate (45), and a horizontal jack (59) attached to the fixed plate (41) and for horizontally moving the threaded rod (58), a step of extending the piston rod 34 downward to lift the weight 10 off the placement surface 11; a step of moving a position of a second nut 67 screwed onto the other end of the threaded rod 58 to set a horizontal position adjustment distance of the weight 10 from the other end of the fixed plate 41; a step of supplying pressure oil to the horizontal jack 59 fixed to one end of the fixed plate 41, and moving the threaded rod 58 inserted into the piston rod 62 in the horizontal jack 59 together with the heavy load 10 by a set horizontal position adjustment distance; It consists of:

[0034] The underside of the heavy load 10 is placed on one temporary support 28 on the placement surface 11, and the heavy load 10 is placed on the other temporary support 29 via a cylinder 33 of a vertical jack 31 fixed upside down to the other underside of the heavy load 10, and a horizontal movement device 32 for moving the heavy load 10 horizontally is connected to the lower end of a piston rod 34 of the vertical jack 31 that extends and contracts downward. The horizontal movement device 32 comprises a fixed plate 41 placed on the other temporary support 29, a movable plate 45 provided on the upper surface of the fixed plate 41 so as to be horizontally movable, and a movable plate a threaded rod 58 fixedly attached to the movable plate 45, and each tip of the threaded rod 58 extending linearly in both directions from the movable plate 45, one end of which penetrates through the center of a piston rod 62 that moves back and forth through a cylinder 63 of the first horizontal jack 59 attached to one side of the fixed plate 41, and the other end of which penetrates through the center of a piston rod 62 that moves back and forth through a cylinder 63 of the second horizontal jack 60 attached to the other side of the fixed plate 41, a step of extending the piston rod 34 downward to lift the weight 10 off the placement surface 11; a step of moving the position of the second nut 67 of the second horizontal jack 60, of the first and second nuts 67 that fix the first horizontal jack 59 and the second horizontal jack 60 to the fixing plate 41, to set a horizontal position adjustment distance of the heavy object 10; a step of supplying pressure oil to the first horizontal jack 59 on the side where the horizontal position adjustment distance has not been set, and moving the threaded rod 58 inserted into the piston rod 62 in this first horizontal jack 59 together with the heavy load 10 by the set horizontal position adjustment distance; It consists of:

[0035] a step of lifting the heavy object 10 from the placement surface 11; During the process of setting the horizontal position adjustment distance of the weight 10, An angle adjustment step of rotating and adjusting the horizontal movement device 32 to a desired angle relative to the vertical jack 31 fixed to the weight 10. 9. The method for adjusting the position of a weight according to claim 7, further comprising the step of: [Example]

[0036] A first embodiment of a device and method for adjusting the position of a heavy object according to the present invention will be described with reference to the drawings. 2 to 5, a heavy object position adjusting device 30 according to the present invention comprises a vertical jack 31 and a horizontal movement device 32 provided on the underside of the vertical jack 31. The vertical jack 31 comprises a cylinder 33 and a piston rod 34 that moves forward and backward downward, and the cylinder 33 is sandwiched from above and below by a jack support upper plate 35 and a jack support lower plate 36, and the cylinder 33 and piston rod 34 are fixed together with a connecting rod 37. The vertical jack 31 of the heavy load position adjustment device 30 is fixed to the underside of the heavy load 10 via the jack support upper plate 35 with bolts 69, and jacks down the heavy load 10 and adjusts its horizontal position. The piston rod 34 is lowered by hydraulic pressure from an upper oil port 39 provided on the cylinder 33, and is raised together with the horizontal movement device 32 by hydraulic pressure from a lower oil port 40.

[0037] As shown in Figure 5, the horizontal movement device 32 has a fixed plate 41 at the lowest end, guide plates 42 on two opposing sides of this fixed plate 41, and horizontal jack mounting plates 43 on the other two opposing sides, with rod insertion holes 44 in the horizontal jack mounting plates 43. A movable plate 45 is placed on the upper surface of the fixed plate 41 so as to be slidable between the guide plates 42 with sliding members 49 interposed therebetween. Notches 46 are formed on two sides of this movable plate 45 to allow the horizontal jack mounting plate 43 to escape when sliding, and elongated holes 47 are formed in the four corners in the sliding direction, and movable plate holding bolts 48 are passed through these elongated holes 47 to slidably hold the movable plate to the fixed plate 41. Two rod insertion plates 50 are fixed to the upper surface of the movable plate 45 with a gap in the sliding direction of the movable plate 45, and this gap forms a rod insertion groove 51. A washer holding plate 53 with a spherical washer 52 fixed thereto is placed on the upper surface of the rod insertion plate 50.

[0038] 2 and 3, the spherical washer 52 is placed on the upper surface of the washer retaining plate 53 and fixedly attached by a bolt 56 inserted from the underside of the washer retaining plate 53. The spherical recess 38 on the underside of the piston rod 34 fits into the upper surface of the spherical washer 52, and the spherical washer 52 is connected to the piston rod 34 by a connecting bolt 54 that can rotate at the center point of the spherical washer 52 through a swing hole 55 consisting of an upward conical hole from the underside of the spherical washer 52, so that the spherical washer 52 and the piston rod 34 are connected to each other so that they can swing freely in all directions. In this manner, the spherical washer 52 is fixed to the upper surface of the washer retaining plate 53, and with the piston rod 34 connected to the upper surface of this spherical washer 52 so as to be able to swing freely, the washer retaining plate 53 is placed on the rod insertion plate 50, and this washer retaining plate 53 is stacked on the rod insertion plate 50 and the movable plate 45 in that order, and is fixed integrally to the movable plate 45 with the bolts 57 at the four corners.

[0039] As shown in FIG. 5, a movable plate 45, which has the washer retaining plate 53 and the rod insertion plate 50 fixed together, is placed on the upper surface of the fixed plate 41, and movable plate retaining bolts 48 are inserted into the elongated holes 47 at the four corners, so that the movable plate 45 is slidably attached on the fixed plate 41. 2, the tip of the threaded rod 58 is inserted through the rod insertion hole 44 of one of the horizontal jack mounting plates 43, a nut 64 is screwed onto the tip of the threaded rod 58 protruding from the rod insertion hole 44, and the threaded rod 58 is inserted into the rod insertion groove 51 of the rod insertion plate 50 through a washer 65. When the tip of the inserted threaded rod 58 protrudes from the other end of the rod insertion groove 51, the nut 64 is screwed in through the washer 65, and the tip of the threaded rod 58 is further protruded from the rod insertion hole 44 of the other horizontal jack mounting plate 43. When both ends of the threaded rod 58 protrude the same length from the rod insertion groove 51 of the rod insertion plate 50, nuts 64 are screwed into both sides of the rod insertion plate 50, and the threaded rod 58 is fixed to the movable plate 45.

[0040] The piston rods 62 of a first horizontal jack 59 and a second horizontal jack 60, which are Center Hole Jacks (registered trademark), are inserted into the protruding portions of the threaded rod 58 from one horizontal jack mounting plate 43 and the protruding portions of the other horizontal jack mounting plate 43, respectively, and the first horizontal jack 59 and the second horizontal jack 60 are fixed to the one horizontal jack mounting plate 43 and the other horizontal jack mounting plate 43 with a first nut 66 and a second nut 67 via a washer 68.

[0041] The operation of the weight position adjusting device configured as above will be described. (1) Jacking down 10 heavy objects In FIG. 1(a), in order to jack down a heavy object 10 during bridge construction, a temporary support 28 for the heavy object made of sandal material is lowered step by step. For this lowering operation, the heavy load 10 is supported at two points: one temporary support table 28 and the other temporary support table 29. One end of the heavy load 10 is placed directly on one temporary support table 28. A heavy load position adjustment device 30 is fixedly attached to the underside of the heavy load 10 on the other temporary support table 29, and the heavy load 10 is placed via the heavy load position adjustment device 30. This heavy load position adjustment device 30 consists of a downward-facing vertical jack 31 and a horizontal movement device 32 attached to the underside of this vertical jack 31, and this heavy load position adjustment device 30 is fixedly attached to the underside of the heavy load 10 with bolts 69 by using the jack support upper plate 35 on the upper surface.

[0042] 1(a), when the heavy object 10 is placed on one temporary support 28, to jack down the heavy object 10, the horizontal movement device 32 of the heavy object position adjustment device 30 is raised (retracted) by hydraulic pressure from the lower oil port 40 to lift it off the other temporary support 29, and the uppermost temporary support 29a shown by the chain line is removed. After the uppermost temporary support 29a is removed, hydraulic pressure is sent from the upper oil port 39 to lower the piston rod 34 of the vertical jack 31, and the weight of the heavy object 10 is transferred from one temporary support 28 to the other temporary support 29, as shown in FIG. 1(b). After the weight of the heavy object 10 has been transferred to the other temporary support 29, the uppermost temporary support 28a of one temporary support 28 is removed. After the uppermost temporary support stand 28a of one of the temporary support stands 28 is removed, the horizontal movement device 32 is raised (retracted) by hydraulic pressure from the lower oil port 40, the heavy load 10 is lowered, and the load of the heavy load 10 is transferred to the other temporary support stand 28. Thereafter, the same operation is repeated to jack down the heavy object 10 to a predetermined position.

[0043] (2) Adjusting the horizontal position of the weight 10 When the weight 10 is lowered and does not exactly match the support of the bridge pier, the horizontal position of the weight 10 is adjusted. 2, for example, to adjust the position by a distance a to the left, the second nut 67 that fixes the position of the second horizontal jack 60 on the right side in the figure is moved by the distance a to the right. In this state, if the second horizontal jack 60 on the right side is set free and pressure oil is sent to the pressure oil port 71 of the first horizontal jack 59 on the left side, the piston rod 62 of the first horizontal jack 59 will move leftward together with the first nut 66 and threaded rod 58, and will move by the distance a until the second nut 67 on the right side comes into contact with the second horizontal jack 60. The movable plate 45, washer retaining plate 53, and spherical washer 52 are fixed integrally to the center of the threaded rod 58 with nuts 64 on both sides, so that the vertical jack 31 and the weight 10 fixed thereto also move a distance a to the left when the threaded rod 58 moves. At this time, the sliding member 49 is interposed between the movable plate 45 and the fixed plate 41, so the weight 10 can move smoothly and be adjusted in position. Conversely, when the position of the heavy load 10 is to be adjusted to the right, the first nut 66 that fixes the position of the first horizontal jack 59 on the left side in the figure is moved a predetermined distance to the left. In this state, when the left first horizontal jack 59 is set free and pressure oil is sent to the pressure oil port 71 of the right second horizontal jack 60, the piston rod 62 of the first horizontal jack 59 moves to the right together with the second nut 67 and threaded rod 58, and the left first nut 66 moves a predetermined distance until it comes into contact with the first horizontal jack 59, thereby adjusting its position.

[0044] If the horizontal movement distance exceeds the adjustment range of the first horizontal jack 59 or the second horizontal jack 60, after the initial position adjustment, pressurized oil is sent to the pressurized oil port 70 of the first horizontal jack 59 or the second horizontal jack 60 to return the position of the piston rod 62 to its original position, and the desired position is adjusted using the same operation as above.

[0045] (3) Change in the horizontal movement direction of the heavy object 10 When the horizontal movement direction of the heavy load 10 is to be moved at a predetermined angle to the direction shown in Fig. 2, with the position of the threaded rod 58 in the initial state as shown in Fig. 2, the piston rod 34 is raised by pressurized oil from the lower oil port 40, the horizontal movement device 32 is separated from the other temporary support base 29, and the horizontal movement device 32 is manually rotated relative to the vertical jack 31 to adjust it to the desired angle, as shown in Fig. 6. The horizontal movement device 32 side of the vertical jack 31 is attached to the heavy load 10, and the spherical washer 52 of the horizontal movement device 32 is in contact with the spherical recess 38 of the piston rod 34, so the angle can be easily adjusted.

[0046] (4) Adjustment of the Inclination of the Weight Position Adjusting Device 30 When the underside of the heavy load 10 and the upper surface of the other temporary support table 29 are not parallel, the spherical recess 38 on the underside of the piston rod 34 is shaped to be in contact with the spherical washer 52 so as to be able to rotate freely in all directions, the connecting bolt 54 connecting the piston rod 34 and the spherical washer 52 is inserted through the swing hole 55 of the spherical washer 52, and further, there is a gap between the underside of the outer periphery of the piston rod 34 and the upper surface of the outer periphery of the spherical washer 52, so that even if at least one of the vertical jack 31 and the horizontal movement device 32 is tilted, they can make contact by following the tilt.

[0047] In the above embodiment, as shown in Figures 2 and 4, a first horizontal jack 59 and a second horizontal jack 60 are attached to both ends of the threaded rod 58, so that the position of the movable plate 45 can be adjusted in both the left and right directions in the figures. However, if it is sufficient to adjust the position of the movable plate 45 in only one direction, only one of the first horizontal jack 59 and the second horizontal jack 60 may be used. [Explanation of symbols]

[0048] 10...heavy load, 11...mounting surface, 12...one-way position adjustment device, 13...mounting base, 14...guide member, 15...frame, 16...sliding member, 17...vertical jack, 18...horizontal jack, 19...jack bracket, 20...all-way position adjustment device, 21...upper mounting base, 22...X-direction horizontal jack, 23...lower mounting base, 24...Y-direction horizontal jack, 25...electrical circuit, 26...centralized control device, 27...hydraulic circuit, 28...one temporary support base, 29...other temporary support base, 30...heavy load position adjustment device, 31...vertical jack, 32...horizontal movement device, 33...cylinder, 34...piston rod, 35...jack support upper plate, 36...jack support lower plate, 37...connecting rod, 38...spherical recess, 3 9...upper oil port, 40...lower oil port, 41...fixed plate, 42...guide plate, 43...horizontal jack mounting plate, 44...rod insertion hole, 45...movable plate, 46...notch, 47...long hole, 48...movable plate retaining bolt, 49...sliding member, 50...rod insertion plate, 51...rod insertion groove, 52...spherical washer, 53...washer retaining plate, 54...connecting bolt, 55...swing hole, 56...bolt, 57...bolt, 58...threaded rod, 59...first horizontal jack, 60...second horizontal jack, 61...center hole, 62...piston rod, 63...cylinder, 64...nut, 65...washer, 66...first nut, 67...second nut, 68...washer, 69...bolt, 70...pressure oil port, 71...pressure oil port.

Claims

1. A position adjustment device for a heavy object, in which the underside of the heavy object is placed on one temporary support table on a heavy object placement surface, and the underside of the heavy object is placed on the other temporary support table via a cylinder of a vertical jack fixed upside down to the underside of the heavy object, and a horizontal movement device for horizontally moving the heavy object is connected to the lower end of a piston rod of the vertical jack that extends and contracts downward, The horizontal movement device is characterized in that it comprises a fixed plate placed on the other temporary support table, a movable plate that is freely movable horizontally on the upper surface of the fixed plate, a threaded rod fixedly attached to the movable plate, and a horizontal jack that is attached to the fixed plate and moves the threaded rod horizontally together with the movable plate.

2. 2. The position adjusting device for a heavy load according to claim 1, wherein a spherical recess is formed on the lower surface of said piston rod, and a spherical washer is provided on the upper part of said movable plate to fit into said spherical recess.

3. 3. The position adjustment device for a heavy load according to claim 2, wherein a conical swing hole is formed in the spherical washer, expanding from the center point of the spherical surface toward the spherical recess, and the spherical washer and the piston rod are connected by a connecting bolt inserted through this swing hole, and the spherical washer is fitted into the spherical recess, making it possible to adjust the tilt in all directions of the horizontal movement device.

4. 2. The position adjustment device for a heavy object according to claim 1, wherein the tip of the threaded rod extending from the movable plate passes through the center of a piston rod that moves back and forth through a cylinder of the horizontal jack attached to the fixed plate and is fixed to the horizontal jack with a nut, so that the horizontal position of the threaded rod is adjusted in response to the forward and backward movement of the piston rod.

5. 2. The device for adjusting a position of a heavy object according to claim 1, wherein the horizontal jack comprises a first horizontal jack and a second horizontal jack, and the threaded rod has a tip end extending linearly in both directions from the movable plate, one end of which penetrates the center of a piston rod that moves back and forth through a cylinder of the first horizontal jack attached to one side of the fixed plate, and the other end of which penetrates the center of a piston rod that moves back and forth through a cylinder of the second horizontal jack attached to the other side of the fixed plate, and is fixed to either the first horizontal jack or the second horizontal jack while releasing the other, so that the horizontal position of the threaded rod is adjusted in response to the forward and backward movement of the piston rod on the side of either the first horizontal jack or the second horizontal jack to which it is fixed.

6. 6. A position adjustment device for a heavy object as described in claim 1, 2, 3, 4 or 5, characterized in that the threaded rod fixedly attached to the movable plate is inserted into a rod insertion groove formed in the center of a rod insertion plate stacked on the movable plate, and is fixed at both ends of the movable plate with nuts.

7. A position adjustment device for a heavy object, in which the underside of the heavy object is placed on one temporary support table on a placement surface, and the heavy object is placed on the other temporary support table via a cylinder of a vertical jack fixed upside down to the underside of the heavy object, and a horizontal movement device for horizontally moving the heavy object is connected to the lower end of a piston rod of the vertical jack that extends and contracts downward, the horizontal movement device comprising a fixed plate placed on the other temporary support table, a movable plate provided on the upper surface of the fixed plate so as to be horizontally movable, a threaded rod fixedly attached to the movable plate, and a horizontal jack attached to the fixed plate and moving the threaded rod in the horizontal direction, extending the piston rod downward to lift the weight off the placement surface; a step of moving a position of a second nut screwed onto the other end of the threaded rod to set a horizontal position adjustment distance of the heavy object from the other end of the fixed plate; supplying pressure oil to the horizontal jack fixed to one end of the fixed plate, and moving the threaded rod inserted into the piston rod in the horizontal jack together with the heavy object by a set horizontal position adjustment distance; A method for adjusting the position of a heavy object, comprising:

8. a horizontal movement device for horizontally moving the heavy object, the underside of which is placed on one temporary support stand on a support surface, and the other temporary support stand via a cylinder of a vertical jack fixed upside down to the other underside of the heavy object; a horizontal movement device for horizontally moving the heavy object connected to the lower end of a piston rod of the vertical jack that extends and contracts downward; the horizontal movement device comprising a fixed plate placed on the other temporary support stand, a movable plate provided on the upper surface of the fixed plate so as to be horizontally movable, a threaded rod fixedly attached to the movable plate, and each tip end of the threaded rod extending linearly in both directions from the movable plate, one end of which penetrates through the center of a piston rod that advances and retreats through a cylinder of the first horizontal jack attached to one side of the fixed plate, and the other end of which penetrates through the center of a piston rod that advances and retreats through a cylinder of the second horizontal jack attached to the other side of the fixed plate; extending the piston rod downward to lift the weight off the placement surface; a step of moving a position of the second nut of the second horizontal jack, of first and second nuts that fix the first horizontal jack and the second horizontal jack to the fixing plate, to set a horizontal position adjustment distance of the heavy object; a step of supplying pressure oil to the first horizontal jack on the side where the horizontal position adjustment distance has not been set, and moving the threaded rod inserted into the piston rod in this first horizontal jack together with the heavy object by the set horizontal position adjustment distance; A method for adjusting the position of a heavy object, comprising:

9. a step of lifting the heavy object from the placement surface; During the step of setting the horizontal position adjustment distance of the heavy object, an angle adjustment step of rotating and adjusting the horizontal movement device to a desired angle relative to the vertical jack fixed to the heavy object; 9. The method for adjusting the position of a weight according to claim 7, further comprising the step of:

Images