JP2971042B2 - Girder transporter and girder transport method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for transporting a bridge girder, and more particularly to a girder transporter and a method for transporting a PC girder.

[0002]

2. Description of the Related Art One of the bridge girder erection methods is an upper road type erection method (also called a "deck type erection method"). In this method, a bridge girder is manufactured in a bridge girder manufacturing yard, and an unerected bridge girder is moved between the erection supports to be erected.

In such a construction method, first, (1) the bridge girder is moved laterally (moving in the direction perpendicular to the bridge axis) from the manufacturing yard to the vertical moving line. (2) Next, the bridge girder is moved vertically to the erection span. (3) Next, the bridge girder is moved between the abutments, between the abutments, or between the abutments. (4) Finally, a bridge girder is installed between the erection supports.

Conventionally, horizontal movement, vertical movement and erection have been performed as follows. (B) Methods for laterally moving the bridge girder include a method using a take-out gate structure, a method using roller pulling, a method using a take-up device including a rail, a gantry with wheels, a jack, a nose, and the like.

(B) The longitudinal movement of the bridge girder includes a method of placing the bridge girder on a heavy traveling device and pulling it with a winch, a method of moving the bridge girder on an electric self-propelled traveling device, a method of moving the bridge girder on a hydraulic self-propelled traveling device. There is a method of moving with a bridge girder.

(C) Methods of erection of the bridge girder include a method using a truck crane, a method in which a girder upper surface is moved by a traveling device, and a method in which a girder lower side is suspended by a suspension device.

(D) The method of installing the bridge girder includes a method using a crossing gate structure, a method using a girder erection machine with a lateral movement function, and the like.

[0008]

However, the prior art has the following problems.

For each operation (lifting / lateral movement / vertical movement / horizontal movement / installation), a lifting device, a take-off device on the side of the girder making yard, a vertical take-off device, a take-off device on the erection span side, and an installation device ( Hereinafter, this will be referred to as a “moving device or the like”).

[0010] For this reason, time and operators are required for transferring the vehicle to each moving device or the like. In addition, the heavy weight of the bridge girder caused a danger of changing the bridge (the fall of the bridge in Hiroshima was also an accident that occurred during pre-emption).

Further, since dedicated mobile devices are prepared, the cost of all mobile devices is high.

[0012] The present invention has been made in view of the above problems, and an object of the present invention is to eliminate the need for a moving device for each operation and eliminate the need to transfer to each moving device. Accordingly, it is an object of the present invention to provide a girder transporter and a girder transport method capable of improving safety during work and reducing costs required for a moving device and the like.

[0013]

In order to solve the above-mentioned problems, according to the present invention, a bridge girder manufactured in a bridge girder manufacturing yard is lifted, and a rail laid on a erection girder erected between erection supports. A girder transporter that transports a bridge girder from a bridge girder manufacturing yard to an erecting bridge by traveling on the upper side, and a lower base, and a traveling device that is rotatably mounted on the lower base and can run on rails, A girder transporter comprising a lifting device for lifting a bridge girder provided on a lower frame. In addition, it is also possible to provide a support leg that is provided on the lower frame, stands on the extended state, and lifts the lower frame itself when turning the traveling device. Further, a turning device for turning the traveling device when the traveling device is lifted can be provided. The lifting device is
A support provided on the lower frame and a support provided on the support,
A nose attached to the bridge girder can also be provided.
In addition, the struts can be stretchable in the axial direction. The nose can also be provided on a main jack fixed to the support. In addition, it is preferable that the telescopic strut and the main jack have a stroke that allows the lifting bridge girder to be installed between the erection supports when the telescopic strut is retracted and the main jack is extended. The nose is
It may be configured to be supported by a guide provided on the lower frame. In addition, a bridge girder manufactured in the bridge girder manufacturing yard is lifted, and the bridge girder extending in the direction perpendicular to the bridge axis and laying on the erection girder erected between the erection supports and the bridge intersecting with the traverse rail. A lower base for transporting the bridge girder from the bridge girder manufacturing yard to the erection support by traveling on a rail with a longitudinal rail extending in the axial direction, and a rail mounted on the lower base so as to be pivotable. In order to transport the bridge girder using a girder transporter equipped with a traveling device capable of traveling and a lifting device for lifting the bridge girder provided on the underside gantry, the lifting girder is used in a bridge girder manufacturing yard. The process of lifting the manufactured bridge girder, the process of traveling on the take-up rail by the traveling device and reaching the intersection with the vertical take-up rail, and enabling the turning device to travel on the vertical take-up rail at the intersection Turning to A step of traveling on vertical-up rails until erection span by a row unit, traveling laid down by intercepted on the rails in the vicinity of the erection span, carrying the bridge girder by a step of carrying the bridge girder to a predetermined location. In addition, a bridge girder manufactured in the bridge girder manufacturing yard is lifted, and the bridge girder extending in the direction perpendicular to the bridge axis and laying on the erection girder erected between the erection supports and the bridge intersecting with the traverse rail. A lower base for transporting the bridge girder from the bridge girder manufacturing yard to the erection support by traveling on a rail with a longitudinal rail extending in the axial direction, and a rail mounted on the lower base so as to be pivotable. A traveling device capable of traveling
Using a girder transporter equipped with a lifting device equipped with a support provided on the lower frame and a lifting device provided on a main jack provided on the support and having a nose attached to a bridge girder, The process of fixing the nose to the bridge girder manufactured in the bridge girder manufacturing yard using heavy equipment and lifting, the process of traveling on the take-up rail by the traveling device and reaching the intersection with the vertical take-up rail, the intersection Above, a step of turning the turning device so as to be able to travel on the vertical rail, a step of traveling on the vertical rail to the erection support by the traveling device, and running on a horizontal rail laid near the erection support. Alternatively, the bridge girder can be transported by a process of transporting the bridge girder to a predetermined place and a process of extending the main jack and installing the bridge girder between the erection supports.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1 and 2, a PC girder transport erection machine M according to this embodiment is a pair of PC girder G (bridge girder) manufactured in a bridge girder manufacturing yard Y. Each PC girder transport erection machine M lifts each end, travels on laid rails (rails), transports the PC girder G to the erection support S, and performs installation. In the bridge girder production yard Y, a production table B is installed. The rails include a horizontal rail SR laid in a direction perpendicular to the bridge axis and a vertical rail LR laid in the bridge axis direction. The horizontal take-up rail SR and the vertical take-up rail LR intersect in the same plane. A construction girder (construction girder) T is constructed between the construction supports S, and a vertical rail LR is also laid on the construction girder T. In FIG. 2, two sets of PC girder transport erection machines M are shown in order to show the installation work of the PC girder G.

As shown in FIGS. 3 to 5, the PC girder transport erection machine M includes a main frame 10 (a lower surface gantry), a bogie 20 (a traveling device) rotatably fixed to the main frame 10, and a bogie. A swivel device 30 for swiveling 20 and an outrigger jack 4 fixed to the main frame 10
0 (supporting legs) and a lifting device 50 fixed on the main frame 10. Note that the drawing is described with the surface of the PC girder transport erection machine M facing the erection span S facing the front. Therefore, FIG. 3 is a side view.
In FIG. 3, reference numeral 70 denotes a generator as a power source for operating the hydraulic unit 80, and reference numeral 90 denotes a balance weight.

The main frame 10 is made of H-shaped steel so as to form an outer contour rectangle in plan view.

The cart 20 is, as shown in FIGS.
It is made of four wheels and is pivotally fixed substantially at the center of the main frame 10 in plan view, and has a horizontal take-up rail SR and a vertical take-up rail LR.
(Not shown in FIG. 8). As shown in FIG. 9, two of the four wheels are drive-side wheels 21 and the remaining are driven-side wheels 22. The drive wheels are driven by a traveling motor 23. The carriage 20 is turned by the turning device 30. 6 to 8 show only the cart 20 and the main frame 10, and FIG. 9 shows only the cart 20.

The turning device 30 turns by manually turning the turning handle 31 shown in FIG. The tip of the turning handle 31 meshes with the transmission gear 32, and the turning gear 33 meshes with the transmission gear 32. When the turning handle 31 is rotated in a state where the bogie 20 is lifted by the outrigger jack 40, the turning bogie 2
0 can be turned 90 degrees in a horizontal plane.

The outrigger jacks 40 shown in FIGS. 6 to 8 are hydraulic jacks that push up the main frame 10 when the bogie 20 is turned, and are provided four in this embodiment. Outrigger jack 40
Is fixed to the lower surface of the main frame 10 and lifts the main frame 10 in an extended state. The output of the entire outrigger jack 40 can lift at least half the weight of the entire PC girder transport erection machine M and half the weight of the PC girder G. When turning (trailing rail S
R to the vertical rail LR, and vice versa) Outrigger jack 40 is the vertical rail LR
Stand on top.

As shown in FIGS. 5, 10 and 11, the lifting device 50 has a tip attached to a PC girder G (not shown in FIG. 11) and lifts the PC girder G. And four telescopic struts 51 (telescopic struts) suspended from the main frame 10 at equal intervals and
It is roughly composed of two main jacks 52 fixed to 1 and a nose 57 whose base ends are fixed to the lower ends of both main jacks 52. 10 and 11 show the lifting device 5
Only 0 is shown.

As shown in FIGS. 10 and 11, each telescopic strut 51 has a hydraulic jack 51a and a hydraulic jack 5a.
It is generally constituted by a casing 51b having a rectangular cross section for accommodating the retracted portion 1a. Hydraulic jack 51
a, the lower end thereof is attached to the side of the main frame 10 (FIG. 11).
(In the left-right direction of the drawing), the hinge is fixed to the upper surface mount 58, and the upper end is fixed to the upper surface mount 58. The upper surface mount 58 and the nose 57 can be moved up and down by expanding and contracting in the vertical direction. The upper surface mount 58 is made of H steel, and is formed in a square shape in plan view.

The main jack 52 has a trunnion structure suspended from the telescopic column 51 and fixed to both ends of the cylinder support beam 53. Such a main jack 52 also expands and contracts in the vertical direction. FIG. 3 shows a state in which the telescopic strut 51 is retracted and the main jack 52 is extended (installed state), and FIG. 10 shows a state in which the telescopic strut 51 is extended and the main jack 52 is retracted (lifting / moving state). ing.

As shown in FIG. 12, the cylinder support beam 53 is formed by fixing both ends of a channel steel 53a having a U-shaped cross section at intervals with a pair of end plates 53b. The main jack 52 is inserted into a space surrounded by the two channel steels 53a and the pair of end plates 53b. A fixing pin 53c is inserted through the center of the pair of end plates 53b and the upper part of the main jack 52, and the main jack 52 is fixed to the cylinder support beam 53. The cylinder support beam 53 is fixed to the telescopic column 51 via a cylinder support beam receiving member 54, a receiving member fixing frame 55, and a receiving frame 56 in that order.

As shown in FIGS. 13 to 15, the cylinder support beam receiving member 54 has an inverted U-shape in front view, and is in contact with the outer side surface of the web of each channel steel 53a. A pin 54a is inserted through the upper center of the cylinder support beam receiving member 54 and the center of the web of the channel steel 53a, and the cylinder support beam 53 and the cylinder support beam receiver 54 are relatively rotatably connected. The lower end of the cylinder support beam receiving member 54 is fixed to a receiving member fixing frame 55. The receiving material fixing frame 55 is made of H steel, and both ends of the receiving material fixing frame 55 are installed on a receiving frame 56 existing in the front-rear direction. The receiving frame 56 shown in FIG. 13 is an H-shaped steel, and is bridged between the telescopic struts 51 so as to form a square in plan view.

As shown in FIG. 5, the nose 57 includes two horizontally extending arms 57a and a connecting beam 5 connecting them.
7b. The center of the connecting beam 57b has a P
A hanging bracket 57c to be attached to the C girder G is fixed. The nose 57 is moved up and down along a nose self-supporting guide 61 vertically suspended at an end of the main frame 10 in which a guide roller 60 fixed to the nose 57 runs in a vertical direction.

The hydraulic jack, telescopic strut, telescopic extension and outrigger jack 40,
The run of 0 is performed wirelessly. The transmission device and the reception device (not shown) may be any of the existing technologies that are suitable for implementing the present invention.

Next, an installation method using the PC girder transport installation machine M will be described.

First, a nose 57 is attached to a PC girder G manufactured in the bridge girder manufacturing yard Y shown in FIGS. 1 and 2, and the telescopic strut 51 is extended and the main jack 52 is retracted so that a vertical rail is taken from the manufacturing stand B. It moves to LR (moves in the direction of arrow A).

Next, as shown in FIG. 16, the outrigger jack 40 is operated to push up the main body on the crossing rail SR.

Next, as shown in FIG. 17, the bogie 20 is turned so as to run on the longitudinal rail LR.

Next, it moves to the span S of the PC girder G (moves in the direction of arrow B).

Next, the outrigger jack 40 is operated in a manner similar to the operation shown in FIG.

Next, as in the operation shown in FIG.
0 to change the direction of the take-over line (arrow C
Move in the direction).

Next, the PC girder G is transported to the erection span S as in the right PC girder transport erection machine M shown in FIG.

Next, an installation operation is performed as shown in FIG. In FIG. 18, the erection girder T shown in FIG.
It is hidden by the C digit G, and the same components as those in FIG. 2 are denoted by the same reference numerals as in FIG. At the time of installation, as shown in FIG. 18, the expansion and contraction strut 51 is retracted and the main jack 52 is extended, thereby making it possible.

After the installation is completed, the nose 57 is returned to the bridge girder manufacturing yard Y by independent traveling without leaving the nose 57 on the PC girder G as in the prior art. Here, "independent driving"
This refers to traveling with the nose 57 attached to the PC girder carrying erection machine M without transporting the nose 57 by a separate heavy machine as in the prior art, and with the tip maintained in a substantially horizontal state without sagging.

As described above, a series of operations of lifting, horizontal movement, vertical movement, horizontal movement, and installation can be performed.

Since the PC girder transport erection machine M according to the embodiment is configured as described above, the following effects can be obtained.

Since the main jack 52 is provided, the PC girder G can be lifted from the production stand.

Since the bogie 20 is provided with the turning device 30, it is possible to move from the horizontal rail SR to the vertical rail LR or vice versa. as a result,
There is no need to transfer between the moving devices, and the work time is reduced.

Further, since the telescopic strut 51 is extendable, the PC girder G can be lowered to a level below the running surface (upper surface of the abutment). As a result, the PC girder G can be installed in the erection span S.

Further, the horizontal movement, the vertical movement,
Alternatively, it can respond to the oblique angle at the time of installation.

The switching of the running direction is performed by lifting the PC girder transport erection machine M with the outrigger jack 40 and then turning the bogie 20 with the turning device 30, so that no other power is required. The traveling direction can be switched by the PC girder transport erection machine M itself.

Also, since the moving range is wide, the suspension system is used, the pin structure is frequently used, and the PC girder G depends on the rail condition.
It can respond to various behaviors.

The work from lifting to installation is dangerous. However, since each work can be performed in a series of steps by a pair of PC girder transport erection machines M, the work of re-arrangement at the time of lifting and installation is performed. Becomes unnecessary, and the danger at the time of work can be greatly reduced as compared with the related art. In addition, since radio control is employed, no danger is given to the installer.

As described above, the PC girder G can be moved only by the machine M, that is, lifting, horizontal movement, vertical movement, horizontal movement,
Since a series of installation work can be performed, lifting equipment,
The overall price can be reduced as compared with the case of preparing a traverse device, a traverse device, a traverse device and an installation device at the girder manufacturing yard side. In addition, by eliminating the need to transfer to each moving device or the like, safety during work can be improved, and the construction period can be shortened and construction costs can be reduced.

Further, since the carriage 20 is provided with a drive motor, the entire apparatus including the girder hanging nose 57 can run on its own.

Further, since the lower end of the telescopic strut 51 can be tilted freely, assembly can be easily performed.

Further, since the power source for lifting is constituted only by hydraulic pressure, the carriage 20 can be made compact.

Since the nose self-supporting guide 61 is provided, the tip of the nose 57 does not fall. Therefore, the vehicle can travel independently with the nose 57 attached. In addition, stable lifting can be performed. Also,
Since the guide roller 60 is provided, it is possible to smoothly move up and down.

When the horizontal take-up rail SR and the vertical take-up rail LR are laid as shown in FIG. 1, a plurality of sets of girder transport erection machines can be run as shown in FIG.

Although the present embodiment has been applied to the installation of the PC girder G, the present invention is not limited to this, and may be applied to a bridge girder suitable for applying the present invention, such as a steel girder. it can.

In addition, the struts can be made non-stretchable. In that case, it can also be provided so as to form a C shape in a front view, a side view, and a rear view.

Further, the nose 57 can be fixed directly to the upper base 58 or the column.

The telescopic strut 51 of this embodiment has a hydraulic jack 51a, and the main jack 52 is a hydraulic jack for raising and lowering the PC girder G. In the present invention, the present invention, such as a winch, is implemented. It can be raised and lowered by a suitable one.

Further, in the above embodiment, the main jack 52 is provided on the telescopic support 51, but it is also possible to provide the main jack 52 on the upper frame 58.

It is also possible to provide a column extending vertically upward from the upper base 58, and to provide the main jack 52 to this column.

Further, a winding device may be provided at the tip of the nose 57.

It is also possible to provide only the turning device 30 and the lifting device 50 without providing the outrigger jack 40. In such a case, a separate jack may be used to lift the girder using a girder transport erection machine.

Further, in the above embodiment, the support legs are mounted on the lower surface of the lower frame, but they can be mounted on the side surface or the like.

Further, the number, position, shape, etc. of the above-mentioned constituent members are not limited to the above-described embodiment, but can be set to a number, position, shape, etc. suitable for carrying out the present invention.

[0063]

Since the present invention is configured as described above, the following effects can be obtained. According to the present invention, since the lifting device is provided and the traveling device is rotatably mounted, the work of lifting, lateral movement, longitudinal movement, and lateral movement can be performed by one type of device (girder transport erection machine). It can be performed. Accordingly, since it is not necessary to change the bridge girder, the construction time can be reduced, and the construction cost can be reduced. Further, since a dedicated lifting device, a take-up device on the side of the girder manufacturing yard, a vertical take-up device, and a take-over device on the side of the erection support are unnecessary, costs required for the moving device and the like can be reduced. In addition, since dangerous transfer work can be omitted, safety can be improved.

Further, according to the inventions set forth in claims 5 to 7, since all the operations from lifting to installation can be performed, a greater effect can be obtained.

According to the eighth aspect of the present invention, since the guide is provided, the vehicle can travel independently while holding the nose.

[Brief description of the drawings]

FIG. 1 is a plan view from a bridge girder manufacturing yard of a PC girder to a span between erection supports.

FIG. 2 is a side view from a bridge girder manufacturing yard of a PC girder to a erection span.

FIG. 3 is a side view of the PC girder transport erection machine according to the embodiment of the present invention.

FIG. 4 is a rear view of the PC girder transport erection machine according to the embodiment of the present invention.

FIG. 5 is a plan view of the PC girder transport erection machine according to the embodiment of the present invention.

FIG. 6 is a side view of a truck according to the PC girder transport erection machine shown in FIG.

FIG. 7 is a rear view of a bogie according to the PC girder transport erection machine shown in FIG.

FIG. 8 is a plan view of a bogie relating to the PC girder transport erection machine shown in FIG.

9 is a detailed side view of a bogie according to the PC girder transport erection machine shown in FIG.

FIG. 10 is a side view of the lifting device with the PC girder lifted.

FIG. 11 is a rear view of the lifting device with the PC girder lifted.

FIG. 12 is a perspective view showing a cylinder support beam receiving member.

FIG. 13 is a detailed front view of a cylinder support beam receiving member.

FIG. 14 is a sectional view taken along line XX of FIG. 13;

15 is a sectional view taken along line YY of FIG.

FIG. 16 is a side view showing a state before a bogie of the PC girder transport erection machine shown in FIG. 3 turns.

FIG. 17 is a front view showing a state after the bogie of the PC girder transport erection machine shown in FIG. 3 turns.

FIG. 18 is a side view showing a state where the PC girder is installed on the PC girder transport erection machine.

[Explanation of symbols]

 M PC girder transporting and erection machine G PC girder Y Bridge girder yard B Production stand SR Side take-up rail LR Vertical take-up rail S Erecting span T Erecting girder 10 Main frame (bottom mounting) 20 Dolly (traveling device) 21 Driving wheel 22 Driven side Wheels 23 Running motor 30 Swivel device 31 Swivel handle 32 Transmission gear 33 Swivel gear 40 Outrigger jack (support leg) 50 Lifting device 51 Telescopic strut 51a Hydraulic jack 51b Casing 52 Main jack 53 Cylinder support beam 53a Channel steel 53b End Plate 53c Fixing pin 54 Cylinder support beam receiving material 54a Pin 55 Receiving material fixing frame 56 Receiving frame 57 Nose 57a Arm 57b Connecting beam 57c Suspension fitting 58 Top mount 60 Guide roller 61 Nose freestanding guide 70 Hydraulic pump 80 Oil Pressure unit 90 Balance weight

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-324407 (JP, A) JP-A-54-100125 (JP, A) JP-B-6-29489 (JP, B2) (58) Field (Int.Cl. ⁶ , DB name) E01D 21/00

Claims (10)

(57) [Claims] 1. A bridge girder manufactured in a bridge girder manufacturing yard is lifted, and the bridge girder is laid on a girder erected between the erection girder. A girder transporter for transporting the bridge girder, comprising a lower base, and pivotably attached to the lower base.
A girder transporter comprising: a traveling device capable of traveling on the rail; and a lifting device for lifting a bridge girder provided on the lower frame. 2. A girder transporter according to claim 1, further comprising a support leg provided on said lower base, standing on said base in an extended state, and lifting said lower base itself when turning said traveling device. Machine. 3. The girder transporter according to claim 1, further comprising a turning device for turning the traveling device when the traveling device is lifted. 4. The lifting device according to claim 1, wherein the lifting device includes a support provided on the lower frame, and a nose provided on the support and attached to a bridge girder. Girder transporter described in. 5. The girder transporter according to claim 4, wherein the column is extendable in the axial direction. 6. The girder transporter according to claim 4, wherein the nose is provided on a main jack fixed to the column. 7. The telescopic strut and the main jack have a stroke capable of setting the lifting bridge girder between the erection supports in a state where the telescopic strut is retracted and the main jack is extended. The girder transporter according to claim 6, characterized in that: 8. The girder transporter according to claim 4, wherein the nose is supported by a guide provided on the lower frame. 9. A bridge girder manufactured in a bridge girder manufacturing yard is lifted and laid on a erection girder erected between erection supports, and a crossing rail extending in a direction perpendicular to the bridge axis and intersecting with the crossing rail. By running on a rail having a longitudinal rail extending in the bridge axis direction, the bridge girder is transported from the bridge girder manufacturing yard to the erection support, a lower base gantry, and the lower gantry can be turned. A girder transport method using a girder transporter provided with a traveling device mounted on the rail, and a lifting device for lifting a bridge girder, the lifting device being provided on the lower base, Lifting a bridge girder manufactured in a bridge girder manufacturing yard using a heavy girder, traveling on the crossing rail by the traveling device to reach an intersection with the vertical rail, In front of the turning device Turning the vehicle so as to be able to run on the vertical rail, driving the traveling device on the vertical rail to the space between the erection supports, and running on the horizontal rail laid near the erection support And transporting the bridge girder to a predetermined location. 10. A bridge girder manufactured in a bridge girder manufacturing yard is lifted and laid on a erection girder erected between erection supports, and a crossing rail extending in a direction perpendicular to the bridge axis and intersecting with the crossing rail. By running on a rail having a longitudinal rail extending in the bridge axis direction, the bridge girder is transported from the bridge girder manufacturing yard to the erection support, a lower base gantry, and the lower gantry can be turned. A lifting device comprising: a traveling device mounted on the rail, which is mounted, a support provided on the lower frame, and a nose mounted on a bridge girder provided on a main jack provided on the support. A girder transporting method using a girder transporter having a lifting device that performs lifting and fixing the nose to a bridge girder manufactured in a bridge girder manufacturing yard using the lifting device; Front by traveling device A step of traveling on the take-up rail and reaching an intersection with the vertical take-up rail; a step of turning the turning device on the intersection so that it can travel on the vertical take-up rail; and A step of traveling on the vertical rails between the erection supports, a step of traveling on the horizontal rails laid near the erection supports, and transporting the bridge girder to a predetermined location, and extending the main jack. Installing the bridge girder between the erection supports.