JP2007291719A - Method and equipment for erecting heavy load - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method which enables the transfer of a rear portion of a heavy load and a jack-down operation after the transfer to be performed through the same steps, and which enables a series of respective operations of installing a jack-down unit itself on a bridge pier and removing it from the bridge pier after the transfer to be safely performed in a short period of time. <P>SOLUTION: This method comprises: a step of transferring the heavy load by using a truck which is installed in a transfer passage; a step of supporting one end of the heavy load by erecting a load bearing support of rear-portion erection equipment, mounted on the heavy load, in the transfer passage, when the heavy load is shifted to a predetermined position; a step of fixing the pull-in side of the rear-portion erection equipment, so as to jack down a replacement side along with the heavy load by using a jack unit; a step of fixing the replacement side of the rear-portion erection equipment, so as to jack down the pull-in side by using the jack unit; a step of jacking down the heavy load to an installation base by repeating the step of jacking down the replacement side, and the step of jacking down the pull-in side; and a step of removing the rear-portion erection equipment after the heavy load is jacked down. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the case where heavy objects such as bridges are assembled and transported on a production yard or an existing bridge girder and installed on a pier, the heavy objects such as bridges are transported, and the upper and lower sides after the transportation It is related with the construction method of the heavy article which enabled it to be able to carry out by the same setup, and its apparatus.

  In general, in order to build a heavy bridge on a pier constructed on a road, river, etc. at a predetermined interval, a trolley frame that connects multiple piers is used, and a crane that moves the trolley frame is used. A method is known in which a bridge girder to be erected is lifted and transferred to a predetermined position by a trolley while being lowered, and the bridge girder is lowered by a crane and installed (Patent Document 1).

In such a method, a crane is used to lift a new bridge girder on an existing pier, transfer it, and lower it to install it.Large supporting pillars and other frameworks for installing a trolley, lifting a new bridge girder, or to a predetermined position Devices such as cranes for transporting and lowering after transport become extremely large.
Therefore, a method of connecting and transferring the handbill 16 as shown in FIG. 10 is often used.
In FIG. 10, bridge piers 10 are preliminarily built at predetermined intervals so as to straddle railway tracks, automobile roads 11 and the like, and in the right end portion (portion without roads 11 etc.) of FIG. A bridge, a bridge girder, etc. are preliminarily installed on the upper end of the pier 10 via a rubber shoe 18 and used as a production yard or a transfer path 12.
On this transfer path 12, the bridge 13 to be installed is manufactured, assembled, transferred, and placed on the front carriage 14 and the rear carriage 15. A handrail 16 is attached to the end of the bridge 13 by a connecting structure 17.
A rubber shoe 18, a sandal material 19, and a transfer device 20 are placed on the pier 10 to which the bridge 13 is transferred and installed. In order to transfer the bridge 13, the height of the pier 10 to be transferred is set to The height of the front carriage 14 and the rear carriage 15 on the transfer path 12 should be substantially matched.

When such a heavy bridge 13 or the like is installed on the pier 10, a height of a sanddle material 19 called a steel vent is assembled on the pier 10 in order to adjust the height with the transfer path 12 such as a production yard. A method is adopted in which the transfer device 20 is placed on the transfer device 20 and then transferred (Patent Document 2).
This conventional method will be described in more detail with reference to FIG.
If the adjustment height is about 1 to 2 m, the sandal materials 19 having a height of about 15 cm are stacked in multiple stages and fixed to each other, and the transfer device 20 placed thereon is positioned at least at a position orthogonal to the transfer direction. At the same time, at least two sanddle members 19 stacked in multiple stages and fixed to each other, with a refill jack 22 interposed between the sandle member 19 and the lower surface of the bridge 13 are positioned at a position orthogonal to the transfer direction. Install.
When the adjustment height exceeds 2 m and is 5 m or more, the base 26 and the vent material 23 having a height of about 100 cm are stacked in multiple stages and fixed to each other between the lower side of the sandal material 19 and the pier 10. In addition, the connecting members 24 are connected to each other and the reinforcing members 25 are reinforced.
In this state, the bridge 13 is transferred to a predetermined position.

In order to place the bridge 13 on the rubber shoe 18 of the pier 10 after the transfer, the following two methods are mainly known.
The first is a method of jacking down the bridge 13 while gradually removing the sandal material 19, the vent material 23, the transfer device 20, the replacement jack 22 and the like on the bridge pier 10, and this method is generally used. The procedure of this armpit work will be described with reference to FIG.
During the transfer of the bridge 13, the load of the bridge 13 is applied to the transfer device 20, and the rearrangement jack 22 is slightly shrunk, and no load is applied, but when the bridge 13 is transferred to a predetermined position, the replacement is performed. After fixing the upper end of the jack 22 to the lower surface of the bridge 13, the rearrangement jack 22 is extended to replace the entire load of the bridge 13 with the rearrangement jack 22, the transfer device 20 is unloaded, and the transfer device 20 is a sandal material. Remove from 19 and remove. The sandal material 19 is inserted in the removed position by the height of the transfer device 20.
The refill jack 22 is shrunk to replace the bridge 13 with the sandle material 19 on the transfer device 20 side, and the one-stage sandle material 19 on the refill jack 22 side is removed.
After the removal, the rearrangement jack 22 is extended, the bridge 13 is rearranged on the rearrangement jack 22 side, and the one-stage sandal material 19 on the transfer device 20 side is removed.
When all the sandal material 19 has been removed, the connecting material 24 and the bracing 25 are removed, and then the vent material 23 is removed in sequence. However, since the vent material 23 is high in height, the sandal material 19 is fitted in the same manner as described above. Repeat the above process many times.
Finally, the pedestal 26 is removed by a refilling jack (not shown), and the bridge 13 is placed on the rubber shoe 18 of the pier 10. After erection, the bracket 21 is removed.

  Second, when work time is limited, a column that is sufficiently higher than the height of the bridge pier 10 plus the bridge 13 is installed on the pier 10 side, a beam is passed to the upper end, and a jack type is placed on the beam. A lifting machine is installed, the bridge 13 to be installed via a lifting material such as a rod is temporarily lifted, the sandal material 19, the vent material 23 and the transfer device 20 on the pier 10 are removed, and then a jack is placed. This is a method in which the bridge 13 is lowered and suspended from the bridge pier 10 while being suspended by a lifting machine. According to such a method, the work time required for jackdown can be shortened, but the extra work of installing a pillar on the side of the pier 10 or disassembling increases. In addition, there are many cases where the construction site is a road with heavy traffic, and in such a case, it is often impossible to install a support column and this method cannot be constructed.

  In many cases, the construction of the bridge 13 on the bridge pier 10 is a road 11 with a heavy traffic volume, and it is unavoidable to carry out night construction with less trouble in traffic. However, the conventional method of removing the sandal material 19 and the vent material 23 is time-consuming and troublesome in assembling them, and the sandal material 19, the vent material 23, and the transfer device after the bridge 13 is transferred. 20, the work of removing the rearrangement jacks 22 and the like is performed on the bridges 10 so that the bridges 13 are heavy and the bridges 13 placed on the plurality of piers 10 are not inclined more than the allowable limit. It had to be done one by one, took too much time, and there was a problem with safety.

In order to solve such a problem, the present applicant has proposed a front part erection device 58 that hangs down the front end of the heavy article 13 as shown in FIGS. 7, 8, and 9 (Patent Document 3). .
The front erection device 58 is a bridge erection device for erection of the bridge 13 to be erected on the pier 10, and a column 32 functioning as a steel vent is installed on the pier 10, and the bridge 32 is bridged on the column 32. By attaching a delivery stage 38 for transporting the bridge 13 on the pier 10 and lifting and lowering the support column 32 by a jack device 39 attached to the pier 10 after the bridge 13 is transported, the bridge 13 is sent out and set up as it is. It is possible to jack down at high speed.

The jack-down operation of the bridge 13 to the pier 10 by the front erection device 58 will be described in more detail.
(1) The bridge 13 transferred from the production yard 12 or the like is received and transferred by an endless transfer device 20 such as an endless track as shown in FIG. At this time, since the built-in jack 36 of the transfer device 20 is in a raised state, the locking member 42 of the load supporting column 32 and the upper end portion of the remounting jack 22 have a slight gap between the lower end surfaces of the bridge 13. is doing. When the tip of the bridge 13 is transferred over the plurality of piers 10 to the opposite bank, a jackdown operation is started for each pier 10 in order to place the bridge 13 on the rubber shoe 18 of the pier 10. . Although it is desirable to perform the jackdown operation of the pier 10 for all the piers 10 at the same time, since it is extremely difficult, it is performed from the side of one pier 10 within the allowable bending range of the connecting portion of the bridge 13. This will be described in more detail.

(2) When the bridge 13 is transported to a predetermined position, the rearrangement jack 22 is extended to replace the load of the bridge 13 with the rearrangement jack 22, and the built-in jack 36 of the transfer device 20 is lowered below the receiving platform 43. After setting the load, the refill jack 22 is lowered and the load of the bridge 13 is received by the four cradle 43. This operation is performed by all the piers 10 and the entire load of the bridge 13 is received by the cradle 43 of the load supporting column 32. This state is shown by a solid line in FIG.

(3) When the total load of the bridge 13 is received by the receiving platform 43, a part of the braces 25 and the connecting material 24 connected to the load supporting column 32 are removed.

(4) The beam material 35 is suspended by the chain block 37 while the delivery stage 38 including the transfer device 20 and the refilling jack 22 is placed on the beam materials 34 and 35 and the sandal material 19, and the load support column 32. The locking member 42 of the beam member 34 inserted into the locking portion 41 is removed, and the load on the load supporting column 32 is eliminated. In this state, as shown by the chain line in FIG. 9, the delivery stage 38 is lowered onto the pier 10. In the lowered state, the transfer device 20, the refilling jack 22, the beam members 34 and 35, and the sandal member 19 are dismantled and removed with a crane or the like. At this time, since a sufficient gap is generated on the lower surface of the bridge 13, the dismantling and removal work is performed more smoothly than in the conventional method.

(5) After removing the delivery stage 38, the remounting locking tool 44 in the bracket 30 is pulled out from the locking tool insertion hole 50. Then, the load of the bridge 13 is applied to the reaction force beam 40 via the load supporting column 32 and the jack side locking tool 45.

(6) In this state, the piston rods 52 of the four jack devices 39 attached to the pier 10 are gradually lowered. When the load supporting column 32 is lowered by the pitch of the locking portion 41 (96 cm in the embodiment) and the locking tool insertion hole 50 of the bracket 30 is aligned with the locking portion 41, the refilling locking tool 44 is inserted. A load is received by the repositioning locking tool 44. Since there is no load on the jack side locking tool 45 side, the jack side locking tool 45 is pulled out and the piston rod 52 is raised to the original position. Such descent of the bridge 13 is also performed on the other piers 10 in order within the allowable bending range of the connecting portions of the plurality of bridges 13.

(7) When the lower surface of the bridge 13 is installed on the rubber shoes 18 of all the piers 10, the bracket 30, the load supporting column 32, the horizontal force auxiliary column 33, and the cradle 43 are all removed.
7, 8, and 9, 23 is a vent material, 26 is a base, 31 is an auxiliary bracket, 46 is a bracket body, 47 is a bracket fixing bracket, 48 is a bolt, 49 is The support insertion hole 51 is a cylinder, 53 is a connection fitting, 54 is a connection fitting, 55 is a pin, 56 is a support insertion hole, and 57 is a locking tool insertion hole.
JP 58-47863 A JP 2004-244934 A JP-A-2005-350996

As described above, since the front part erection device 58 shown in Patent Document 3 is used for the armpit at the tip of a bridge or other heavy object 13, the rear part of the heavy object 13 is still shown in Patent Document 1. A method using a simple crane or a method using a sandle material as shown in Patent Document 2.
Therefore, the transfer of the bridge on the bridge pier and the armpit after the transfer will be carried out by different setup, and the installation to the pier at the rear of the bridge, the transfer of the bridge, and the pier of the bridge erection device after the transfer Each of the series of removal operations still took time and had to rely on large-scale equipment.

  In the present invention, the rear part of the bridge and the armpit after the transport can be performed in the same setup, and the armoring device itself is installed on the pier and removed from the pier after the transportation. It is an object of the present invention to provide a heavy article erection method and apparatus capable of performing work safely and in a short time.

The heavy article erection method according to the present invention includes a step of transferring a heavy article by a front carriage and a rear carriage installed on a transfer path, and the heavy article is provided at an end of the heavy article when the heavy article is transferred to a predetermined position. The load supporting column of the rear erection device is erected on the transfer path to support one end of the heavy object, and the pull-in bracket is fixed to the locking hole of the load supporting column with a coupling pin. The connecting pin of the rearrangement bracket is removed from the locking hole, the jack device provided between the pull-in bracket and the rearrangement bracket is extended, and the heavy object supported through the setting beam attached to the rearrangement bracket is suspended. And the remounting side pin insertion hole of the remounting bracket is aligned with the locking hole below the original locking hole, and a coupling pin is inserted, and the remounting bracket is After fixing to the load supporting column, pull out the connecting pin on the pull-in bracket side from the locking hole, shrink the jack device and match the pin insertion hole of the pull-in bracket with the locking hole below the original locking hole The fixing pin is inserted, and the step of fixing the pull-in bracket to the load supporting column, the step of lowering the refilling side, and the step of lowering the pull-in side are repeated to install the heavy object. It comprises a step of hanging down on a table and a step of removing the rear part erection device after hanging down the heavy object.

The heavy article erection device according to the present invention includes a transport means for transporting a heavy object to be erected on a transport path, and a rear part erection apparatus detachably provided at a rear part of the heavy object. The rear erection device includes a vertically disposed load supporting column, a retractable bracket that is movable up and down on the load supporting column, and a detachable mounting bracket, and a position below the retracted bracket. And a repositioning bracket that can be moved up and down on the load supporting column, and is detachably provided between the retraction bracket and the remounting bracket. It consists of a jack device for changing the interval, and a setting beam attached to the replacement bracket and supporting the heavy object.

  The load supporting struts are detachably connected to each other in the length direction, and are provided with locking holes at predetermined intervals, and the pull-in side pin insertion holes formed in the pull-in bracket are The pull-in side coupling pin can be inserted and removed by aligning with the locking hole, and the refilling side coupling pin can be inserted and removed by aligning the refilling side pin insertion hole drilled in the refilling bracket with the locking hole. It is characterized by being provided in.

  The transfer means is mounted on a rail on the transfer path at the rear end portion of the heavy object, and is mounted on a rail on the transfer path in front of the follower car to be removed after the transfer of the heavy object. And a self-propelled carriage that is replaced with a setting beam after the heavy object is transferred by a predetermined distance and is removed from the setting beam after the transfer of the heavy object is completed.

  According to the first aspect of the present invention, when a heavy object is transported after being transported, without using a huge device such as a crane or a sandal material, the pull-in side along the load supporting column of the rear erection device is used. And the refilling side can be operated safely and in a short time by operating like a scale insect. In addition, since heavy objects can be transported at the minimum necessary height, a conventional large-scale device is not required, and disassembly and transportation after the armpit are easy. Moreover, transfer and armpit can be efficiently performed as a continuous operation. In particular, there are roads, railroads, etc. between piers, cranes and other devices cannot be installed, and it is suitable for work in places where it is necessary to erection in a short time. By the way, according to the method of the present invention, the dredging time can be shortened from about one-fifth to one-tenth as compared with the conventional method using a sandal material.

  According to the second aspect of the present invention, the pull-in bracket is fixed to the locking hole of the load supporting column with the connecting pin, the connecting pin of the refilling bracket is removed from the locking hole, and the pull-in bracket is placed between the pull-in bracket and the refilling bracket. The process of extending the installed jack device to hang down heavy objects, and aligning the remounting side pin insertion hole of the remounting bracket with the locking hole below the original locking hole, and connecting to the remounting side pin insertion hole After inserting and fixing the pin, pull out the coupling pin on the pull-in bracket side from the locking hole, shrink the jack device so that the pin insertion hole on the pull-in bracket matches the locking hole below the original locking hole, and pull-in pin Repeating the process of inserting and fixing the coupling pin into the insertion hole and hanging the heavy load on the mounting base, it is superior in the workability of the armpit, Below it can be in a shorter period of time.

According to the invention of claim 3, it comprises a transfer means for transferring a heavy object to be installed on a transfer path, and a rear part installation device detachably provided at a rear part of the heavy object, The rear part erection device is positioned below the pull-in bracket, a load support column arranged vertically, a retractable bracket that can be moved up and down on the load support column, and detachable, The repositioning bracket provided on the load supporting column can be moved up and down and detachable, and is disposed between the pull-in bracket and the refill bracket. Since it consists of a jack device for changing and a setting beam that is attached to the remount bracket and supports the heavy object, the device is simple and inexpensive. Not can only, installation work and demolition work is simplified.

  According to the fourth aspect of the present invention, the load supporting struts are connected in a separable manner in the length direction, and the locking holes are formed in the horizontal direction at predetermined intervals. The pull-in side pin insertion hole formed so as to be aligned with the locking hole so that the pull-in side coupling pin can be inserted and removed, and the refilling side pin insertion hole drilled in the refilling bracket is provided with the locking hole. Since the replacement-side coupling pin is provided so that it can be inserted and removed, not only the installation work and the disassembly work are simplified, but the number of parts is reduced and the transportation work is extremely easy.

  According to the fifth aspect of the present invention, the transfer means is mounted on the rail on the transfer path at the rear end of the heavy load, and is removed after the transfer of the heavy load, and in front of the follower cart. Since it comprises a self-propelled carriage that is mounted on a rail on a transfer path, transfers the heavy object for a predetermined distance, is replaced with a setting beam, and is removed from the setting beam after the transfer of the heavy object is completed. And the installation and disassembly of the rear erection device can be done safely and easily.

  According to the sixth aspect of the present invention, since the rear part erection device is attached to the rear part of the heavy article, the rear part erection device acts as a counterweight at the time of transfer and can be safely transferred. In addition, the rear part installation device is arranged at the rear part of the heavy object, and the front part installation device is arranged on the mounting base on which the front part of the heavy object is placed. -The armpit can be carried out substantially simultaneously, and the work can be carried out extremely safely and in a short time without the heavy load being slanted or displaced during the armpit or armpit.

The heavy article erection method of the present invention includes a step of transferring a heavy article by a front carriage and a rear carriage installed on a transfer path, and the heavy article is provided at an end of the heavy article when the heavy article is transferred to a predetermined position. A load supporting column of the rear erection device formed on the transfer path and supporting one end of the heavy object, and a pull-in bracket is fixed to the locking hole of the load supporting column with a coupling pin. The connecting pin of the rearrangement bracket is removed from the locking hole, the jack device provided between the pull-in bracket and the rearrangement bracket is extended, and the heavy object supported through the setting beam attached to the rearrangement bracket is suspended. And a step of inserting the connecting pin with the remounting side pin insertion hole of the refilling bracket aligned with the locking hole below the original locking hole, After fixing to the load supporting column, the coupling pin on the pull-in bracket side is pulled out from the locking hole, and the jack device is contracted so that the pin insertion hole of the pull-in bracket matches the locking hole below the original locking hole. The connecting pin is inserted, and the step of fixing the pull-in bracket to the load supporting column, the step of lowering the refilling side, and the step of lowering the pull-in side are repeated to load the heavy load on the mounting base. And the step of removing the rear part erection device after the heavy object is suspended.

An apparatus for realizing this heavy article erection method is such that a rear part erection apparatus 59 is attached to the rear part of the heavy article 13, and the front part erection apparatus is mounted on the mounting base 10 on which the tip of the heavy article 13 is placed. 58, and the rear part erection device 59 includes a vertically-supported load supporting column 60, a retractable bracket 68 that is movable up and down on the load supporting column 60, and is detachable. A repositioning bracket 69 that is positioned below the pull-in bracket 68 and is movable up and down on the load supporting column 60 and is detachable, and between the pull-in bracket 68 and the refill bracket 69. And a jack device 72 for changing the interval between the pull-in bracket 68 and the refill bracket 69 and the remount bracket 69. And the setting beam 61 that supports the heavy object 13, and the front erection device 58 includes at least two jack attachment members 30 that can be detachably attached to both sides of the mounting base 10, and the jack attachment members 30. A jack device 39 consisting of at least two pairs of jacks attached to the front and rear and back and forth, a reaction beam 40 provided at the tip of the piston rod 52 of the jack device 39, and a pin insertion hole at a predetermined interval And has a locking portion 41, which is loosely fitted into a vertical column insertion hole 49 formed in the bracket body 46 of the jack mounting member 30 and a vertical column insertion hole 56 formed in the reaction beam 40. Are attached to a load supporting column 32 made of a square steel tube that advances and retreats and a locking portion 41 on the upper portion of the load supporting column 32 in a detachable manner. It consists delivery stage 38. transferring the serial heavy 13.

1A, 1B, 1C, and 1D are front views showing a state in which a heavy object 13 such as a bridge is sequentially transferred from left to right in the drawing.
In these drawings, reference numeral 12 denotes a production yard, an existing bridge, an existing bridge girder, and other transfer paths. The transfer path 12 is placed on a bridge pier or other mounting base 10, and a rail 66 is laid on the upper surface of the transfer path 12. At the front end of the transfer path 12, a jacking device 28 for refilling is installed. A self-propelled carriage 29 is detachably attached to the lower surface of the intermediate portion of the heavy article 13 and is placed on a rail 66 at an intermediate position of the transfer path 12. Further, a follower carriage 63 is detachably attached to the lower surface of the rear end portion of the heavy article 13, and the self-propelled carriage 29 and the follower carriage 63 constituting the transfer means are connected to the tip. A heavy object 13 to which the hand-roller 16 is attached via the structure 17 is placed.
The attachment position of the heavy object 13 is set so that the rotational moment on the rear end side is 1.2 or more with respect to the rotational moment on the front end side for safe transfer.

  A rear part erection device 59 according to the present invention is attached to the rear part of the heavy object 13. The rear part erection device 59 is mainly composed of a vertical load supporting column 60 and a horizontal setting beam 61, and a heavy object 13 is connected to the lower surface of the setting beam 61 and is suspended. The weight 13 is connected to a winch or other squeezing device 64 by a wire 65 for safety at the time of transfer, and a counterweight 62 is mounted as necessary.

  Details of the rear erection device 59 will be described with reference to FIGS. These drawings show a state immediately before FIG. 1D, that is, a state in which the self-propelled carriage 29 is replaced with the carriage support column 84 and the follower carriage 63 is removed from the heavy load 13.

2, 3, and 4, the rear portion of the heavy object 13 is detachably suspended from the lower surface of the setting beam 61 by a connector 81. Further, between the setting beam 61, the beam member 83, the carriage support column 84, the heavy article 13, and the coupling tool 81, two lateral bars 87 are installed on both sides to attach a brace 86, and on the other side. The bracing 88 is attached over the two horizontal bars 89.
A remounting bracket 69 is attached to the upper surface of the setting beam 61 via a connector 80, and a load supporting strut 60 is loosely fitted vertically into a strut through-hole 71 that vertically penetrates the center of the refilling bracket 69. Has been. Two load supporting columns 60 are provided on the left and right sides at a predetermined interval, and the upper end portions are connected by beam members 67. Locking holes 77 are formed in the load supporting column 60 in the horizontal direction at predetermined intervals. Further, the load supporting column 60 may be a single rectangular tube type, or may be a detachably connected one having a predetermined length.

A pull-in bracket 68 is provided in the load supporting column 60 so as to be positioned above the refill bracket 69 so as to be loosely fitted in the column through-hole 70, and between the pull-in bracket 68 and the refill bracket 69. The jack device 72 with a clevis at both ends that is actuated by hydraulic pressure is disposed, the cylinder 73 of the jack device 72 is connected to the refilling bracket 69, and the piston rod 74 is connected to the retracting bracket 68.
The pull-in bracket 68 and the refill bracket 69 are respectively provided with a pull-in side pin insertion hole 78 and a refill side pin insertion hole 79 communicating with the locking hole 77 in the horizontal direction. The side coupling pin 75 is inserted, and the rearrangement side coupling pin 76 is inserted on the rearrangement bracket 69 side.

A support fixture 82 for fixing the load supporting support 60 via a beam member 90 is provided on the top surface of the distal end of the transfer path 12. A stopper 92 is attached to the tip of the rail 66.
A self-propelled carriage 29 is attached to the lower portion of the carriage support column 84 through a beam member 85 so as to be detached from the lower portion of the heavy article 13. The self-propelled carriage 29 may be an endless endless track transfer device that is used upside down. Moreover, it is not restricted to a self-propelled type, You may drive with other driving force, such as a jack and a wire.
On the upper surface of the transfer path 12, a guide device 91 is attached to prevent the heavy object 13 from being displaced when the heavy object 13 is transferred.

The procedure of the transfer and the armpit by the rear part erection device 59 configured as described above will be described.
First, the transfer will be described with reference to FIG.
FIG. 1 (a) shows a preparation stage, in which a rail 66 is laid on the upper surface of the transfer path 12, and the jack device 28 is installed at the tip of the transfer path 12. A self-propelled carriage 29 is attached to the middle part of the heavy article 13, a follower carriage 63 is attached to the rear part, and the heavy article 13 connected to the handrail 16 is placed on the rail 66. It is desirable that the rear part erection device 59 is attached in advance to the rear end part of the heavy object 13 so as to serve as a counterweight for safe transfer. Further, a winch or other squeezing device 64 is installed at the rear part of the transfer path 12 and connected to the rear part of the heavy article 13 by the wire 65. Further, a counterweight 62 is placed on the setting beam 61 as necessary.
The front erection device 58 described in Patent Document 3 described above is attached to the front bridge pier or other mounting base 10 on which the bridge girder that is the heavy object 13 is to be bridged. However, in the present invention, it is desirable to use the front part erection device 58 in combination, but the present invention is not necessarily limited to using the front part erection device 58, and a sandal material or the like may be used.

In FIG.1 (b), the self-propelled trolley | bogie 29 is driven and the heavy article 13 which connected the handbill 16 is transferred. When the self-propelled carriage 29 moves to the vicinity of the front end of the transfer path 12, the front end of the hand spreader 16 reaches the delivery stage 38 of the front part erection device 58. Here, if the tip of the handbill 16 may be slightly lowered due to bending, the front part erection device 58 shown in FIG. 6 is slightly lowered to receive the handbill 16 or depending on the case. The transfer device 20 is slightly lowered by the built-in jack 36 and receives the hand-roller 16. When the hand-roller 16 is received, it is further transported after being corrected to a predetermined level by the front erection device 58 or by the built-in jack 36.
When the hand-roller 16 is placed on the front part erection device 58, the jack 13 28 lifts the heavy object 13 slightly, and the self-propelled carriage 29 is moved backward from the original position and installed. The wire 65 of the squeezing device 64 is stretched in accordance with the transfer of the heavy object 13.
In addition, the transfer of the heavy article 13 is not limited to the case of using the self-propelled carriage 29, but can be pushed or pulled using a jack, a wire, or the like.

  In FIG. 1C, when the heavy article 13 is further transferred and the rear portion of the heavy article 13 approaches the tip of the transfer path 12, the position of the squeezing device 64 is changed. Further, the heavy object 13 and the handrail 16 are supported by the jack device 28 and the front erection device 58, and the self-propelled carriage 29 under the heavy object 13 is removed and attached to the setting beam 61 below the carriage support column 84. Attach to. Further, the follower carriage 63 at the rear of the heavy article 13 is removed. In this state, the heavy object 13 and the handbill 16 are further transferred.

In FIG. 1D, the transfer is stopped when the rear part of the heavy object 13 reaches the armpit position at the tip of the transfer path 12. This state is shown in FIGS. In this state, the pull-in side coupling pin 75 of the pull-in bracket 68 is inserted and the rear-side coupling pin 76 of the rearrangement bracket 69 is removed, and the jack device 72 with clevis at both ends is contracted to lower the lower end of the load supporting column 60. The portion is brought into contact with the support fixture 82 and connected to the support fixture 82. After the load supporting column 60 is connected and fixed to the column fixing tool 82, the wire 65 of the rubbing device 64 is connected to the setting beam 61, and the self-propelled carriage 29, the carriage supporting column 84, the beam member 83, the cross beam 87, the brace. 86, the crosspiece 89, and the bracing 88 are removed.
Further, the hand spreader 16 and the connecting structure 17 are removed from the tip of the heavy object 13.

From the state of FIG. 1 (d), the heavy object 13 is suspended on the mounting base 10 in the order of operations shown in FIGS. 5 (a), (b), (c), (d), and (e). The operation will be described below. The locking holes 77 are 77a, 77b, 77c, 77d, 77e, and 77f in order from the top.
In FIG. 5A, the pull-in bracket 68 is fixed to the locking hole 77a by the pull-in side coupling pin 75, and the refilling side coupling pin 76 of the refilling bracket 69 is removed from the locking hole 77d.

  5 (b), the jack device 72 is extended in the state of FIG. 5 (a) and the heavy article 13 is suspended, and the remounting side pin insertion hole 79 of the remounting bracket 69 is below the original locking hole 77d. This shows a state in which the redrawing side coupling pin 76 is inserted into and fixed to the locking hole 77e, and then the drawing side coupling pin 75 on the drawing bracket 68 side is pulled out from the locking hole 77a.

  5 (c), the jack device 72 is contracted in the state of FIG. 5 (b) so that the pull-in side pin insertion hole 78 of the pull-in bracket 68 is aligned with the lock hole 77b below the original lock hole 77a. After the side coupling pin 75 is inserted and fixed, the rearrangement side coupling pin 76 on the rearrangement bracket 69 side is extracted from the locking hole 77e.

  5D, the jack device 72 is extended in the state of FIG. 5C, and the heavy object 13 is suspended, and the remounting side pin insertion hole 79 of the remounting bracket 69 is lower than the original locking hole 77e. This shows a state in which the pull-in side coupling pin 75 on the pull-in bracket 68 side is pulled out from the locking hole 77b after the replacement-side coupling pin 76 is inserted and fixed in alignment with the locking hole 77f.

FIG. 5 (e) shows that the above-described operation is repeated several times, and when the heavy object 13 descends to the top of the mounting table 10, the jack device 72 is contracted to bring the retracting side pin insertion hole 78 of the retracting bracket 68 into the original engagement. After aligning with the locking hole 77c below the stop hole 77b and inserting and fixing the pull-in side coupling pin 75, the remounting side coupling pin 76 on the refilling bracket 69 side is extracted from the locking hole 77f, and the jack device 72 is extended. A state in which the heavy object 13 is placed on the mounting base 10 is shown.
When the heavy article 13 is placed on the mounting base 10, the connecting tool 81 that connects the setting beam 61 and the heavy article 13 is removed, and the rear portion erection device 59 is removed.

Along with the armpit of the rear part of the heavy object 13 by the rear part erection device 59, the front part erection apparatus 58 at the tip of the heavy object 13 is also synchronized to descend the heavy object 13 sequentially. The method described in Document 3 can be used.
When the heavy object 13 is placed on the mounting base 10, the heavy object 13 is used as the transfer path 12, and a rail 66 is laid on the heavy object 13, and the heavy object 13 is newly assembled and transferred, and then suspended. Can do.

In the embodiment shown in FIG. 2, the load beam support column 60 is provided on the setting beam 61 so as to be freely suspended and uplifted, and the carriage support column 84 for attaching the self-propelled carriage 29 is provided. In this embodiment, the height adjustment and the armpit work of the heavy article 13 can be performed only after the load supporting support 60 is attached to the support fixture 82.
The present invention is not limited to this, and as shown in FIG. 6, the carriage supporting column 84 is omitted, and only the load supporting column 60 of the rear portion erection device 59 is attached to the setting beam 61. The self-propelled carriage 29 may be directly attached to the lower end portion of 60. In this embodiment, with the self-propelled carriage 29 attached to the lower end portion of the load supporting column 60, the heavy load 13 is lowered to the top of the mounting table 10 by the rear portion construction device 59, or the height of the heavy load 13. Can be adjusted. In this embodiment, in order to remove the self-propelled carriage 29, a support arm 94 is fixed to the lower end portion of the load supporting column 60, and a receiving base 93 is provided on the transfer path 12. The self-propelled carriage 29 is removed after the heavy object 13 is lowered and the load of the heavy object 13 is received by the arm 94 and the cradle 93. The cradle 93 may be a jack or a pedestal having a predetermined height.

  In the above-described embodiment, a case where the rear end portion of the heavy load 13 is suspended and transferred by the rear portion erection device 59 is described, but the present invention is not limited to this. It can also be used when both sides in the middle of the rear are suspended and transferred by the rear part erection device 59 and are suspended.

  In the above-described embodiment, the case where the linear heavy object 13 is suspended is described. However, the present invention can also be used when the heavy object 13 is suspended using the apparatus of the present invention.

  The load supporting column 60 can be constituted by a single square steel pipe, but can also be constituted such that a plurality of columns having a predetermined length can be added or removed. . When the heavy load 13 is suspended using a plurality of load supporting struts 60 that are added, the load supporting struts 60 may be sequentially removed from the upper end according to the armpit. Further, when the heavy load 13 is lifted by using the load supporting struts 60 that can be added, a plurality of the load supporting struts 60 may be sequentially connected to the upper end of the load supporting struts 60 according to the lifting.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a heavy load erection method and apparatus according to the present invention. (C) is an explanatory view showing a state in which the heavy object 13 has been transferred to the vicinity of the tip of the transfer path 12, and (d) is a state at the time when the heavy object 13 has been transferred and the armpit starts. It is explanatory drawing. It is a partially cutaway side view showing an embodiment of a heavy article erection method and apparatus according to the present invention. FIG. 3 is a partially cutaway front view of FIG. 2. FIG. 3 is a perspective view of FIG. 2. FIG. 2 shows a method for laying heavy objects according to the present invention and a dredging operation process by the apparatus, wherein (a) is an explanatory view showing a state immediately before starting dredging after fixing the retracting bracket 68, and (b) is a jack device FIG. 7C is an explanatory view showing a state in which the repositioning bracket 69 is fixed by extending the heavy object 13 by extending 72 and (c) shows the state in which the pulling bracket 68 is lowered by contracting the jack device 72 and then the pulling bracket 68 is fixed. An explanatory view showing the state, (d) is an explanatory view showing a state in which the jack device 72 is extended and the heavy load 13 is lowered to fix the remounting bracket 69, and (e) is a view showing the heavy load 13 under the high load. It is explanatory drawing which shows the state completed and installed in the mounting base. It is a side view which shows the other Example of the construction method of the heavy article of this invention, and its apparatus. The bridge construction apparatus of patent document 3 is shown, (a) is a side view, (b) is a front view. In FIG. 7, it is a perspective view which shows the attachment state of the jack attachment member 30 and the jack apparatus 39. FIG. In FIG. 7, it is a side view which shows the state which hangs down the delivery stage 38 after completion of transfer. 1 shows a known bridge erection device using a hand-roller, in which (a) is a side view and (b) is a front view. The bridge construction apparatus of patent document 2 is shown, (a) is a side view, (b) is a front view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Pier and other mounting bases, 11 ... Road, 12 ... Production yard, existing girders and other transfer paths, 13 ... Bridges and other heavy loads, 14 ... Front carriage, 15 ... Rear carriage, 16 ... Handrail, 17 ... 18: rubber shoe, 19 ... sanddle material, 20 ... transfer device, 21 ... bracket, 22 ... refill jack, 23 ... vent material, 24 ... tether, 25 ... brace, 26 ... pedestal, 28 ... jack device, 29 ... Self-propelled carriage, 30 ... Jack mounting member, 31 ... Auxiliary bracket, 32 ... Load supporting column, 33 ... Horizontal force auxiliary column, 34 ... Beam material, 35 ... Beam material, 36 ... Built-in jack, 37 ... Chain block 38 ... Delivery stage, 39 ... Jacking device, 40 ... Reaction beam, 41 ... Locking part, 42 ... Locking tool, 43 ... Receiving base, 44 ... Locking tool for replacement, 45 ... Jack-side locking tool 46 ... Bracket body, 47 ... Bracket fixing bracket, 48 ... Bolt, 49 ... Post insertion hole, 50 ... Locking tool insertion hole, 51 ... Cylinder, 52 ... Piston rod, 53 ... Connecting bracket, 54 ... Connecting bracket, 55 ... Pins 56 ... Column insertion holes 57 ... Locking device insertion holes 58 ... Front erection devices 59 ... Rear erection devices 60 ... Load supporting columns 61 ... Setting beams 62 ... Counterweights 63 ... Subordinates Trolley, 64 ... winch and other greasing devices, 65 ... wire, 66 ... rail, 67 ... beam material, 68 ... pull-in bracket, 69 ... refill bracket, 70 ... pillar through hole, 71 ... pillar through hole, 72 ... jack Device 73 ... Cylinder 74 ... Piston rod 75 ... Pull-side coupling pin 76 ... Replacement-side coupling pin 77 ... Locking hole 78 ... Pull-in Pin insertion hole, 79 ... Replacement side pin insertion hole, 80 ... Connector, 81 ... Connector, 82 ... Staff fixture, 83 ... Beam material, 84 ... Carriage support pillar, 85 ... Beam material, 86 ... Bracing, 87 ... Horizontal rail, 88 ... Bracing, 89 ... Horizontal rail, 90 ... Beam material, 91 ... Guide device, 92 ... Stopper, 93 ... Base, 94 ... Support arm.

Claims (6)

A process of transferring heavy objects with a carriage installed in a transfer path;
When the heavy load is transferred to a predetermined position, a load supporting column of a rear part installation device attached to the heavy load is erected on the transfer path, and one end of the heavy load is supported.
Fixing the pull-in side of the rear part erection device, and lowering the refilling side together with the heavy object with a jack device;
Fixing the refilling side of the rear part erection device, and lowering the retracting side with the jack device;
Repeating the step of lowering the refilling side and the step of lowering the pull-in side to lower the heavy load on the mounting base;
And a step of removing the rear part erection device after the heavy object has been suspended. A step of transferring heavy objects by a front carriage and a rear carriage installed on the transfer path;
When the heavy load is transferred to a predetermined position, a load supporting column of a rear erection device provided at the end of the heavy load is erected on the transfer path, and one end of the heavy load is supported.
The pull-in bracket is fixed to the locking hole of the load supporting column with a coupling pin, the coupling pin of the replacement bracket is pulled out from the locking hole, and a jack device provided between the pull-in bracket and the replacement bracket is extended. Stepping down a heavy object supported via a setting beam attached to the refill bracket;
After the remounting side pin insertion hole of the refilling bracket is aligned with the locking hole below the original locking hole, a coupling pin is inserted, and after the remounting bracket is fixed to the load supporting column, the pulling bracket Pull out the connecting pin on the side from the locking hole, shrink the jack device, align the pin insertion hole of the pull-in bracket with the locking hole below the original locking hole, insert the connecting pin, and insert the pull-in bracket into the load Fixing to the supporting column;
Repeating the step of lowering the refilling side and the step of lowering the pull-in side to lower the heavy load to the mounting table;
And a step of removing the rear part erection device after the heavy object has been suspended.   A transfer means for transferring a heavy object to be erected on a transfer path; and a rear part erection device detachably provided at a rear part of the heavy object, wherein the rear part erection device is arranged vertically. The load supporting column, a retractable bracket that can be moved up and down on the load supporting column, and a detachable mounting bracket, and located below the retractable bracket, can be moved up and down on the load supporting column. A remountable bracket that is detachably provided, a jack device that is disposed between the pull-in bracket and the refill bracket, and for changing the interval between the pull-in bracket and the refill bracket; A heavy load erection device comprising: a setting beam attached to a replacement bracket and supporting the heavy load.   The load supporting struts are detachably connected to each other in the length direction, and are provided with locking holes at predetermined intervals, and the pull-in side pin insertion holes formed in the pull-in brackets are connected to the engagement holes. The pull-in side coupling pin can be inserted and removed by aligning with the stop hole, and the refilling side coupling pin can be inserted and withdrawn by aligning the refilling side pin insertion hole drilled in the refilling bracket with the locking hole. The heavy article erection device according to claim 3, wherein the apparatus is provided.   The transfer means is mounted on a rail on the transfer path at the rear end of the heavy object, and is mounted on a rail on the transfer path in front of the follower car to be removed after the transfer of the heavy object, 5. The heavy article according to claim 3, further comprising a self-propelled carriage that is transferred to a setting beam after the heavy article has been transferred by a predetermined distance and is removed from the setting beam after the completion of the transfer of the heavy article. Erection device. A rear erection device is attached to the rear part of the heavy object, a front erection device is arranged on a mounting base on which the tip of the heavy object is placed, and the rear erection device is a load support arranged vertically. A support column, a retractable bracket that can be moved up and down on the load supporting column, and a detachable mounting bracket, and a position below the retractable bracket that is movable up and down on the load supporting column. A repositioning bracket provided freely, a jack device that is arranged between these pull-in brackets and refill brackets, and that allows the interval between these pull-in brackets and refill brackets to be varied, and is attached to the refill brackets And a set beam that supports the heavy object, and the front erection device can be detachably attached to both sides of the mounting base. At least two jack attachment members, a jack device comprising at least two pairs of jacks attached to the jack attachment members and advanced and retracted in the vertical direction, and a reaction force provided at the tip of the piston rod of the jack device A vertical column insertion hole formed in the bracket body of the jack mounting member and a vertical column insertion hole formed in the reaction beam And a load supporting column made of a square steel pipe that is loosely fitted to the load supporting column, and a feed stage that is detachably attached to a locking portion at an upper portion of the load supporting column and transfers the heavy object. Heavy equipment erection device.

Images