JP2005299104A - Suspending tool of bridge member, carrying and installing apparatus for bridge member and carrying and installing method for bridge member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently carry and install a bridge member by decreasing the number of suspending apparatus used and without complicated repeated relocation work of a suspending cable. <P>SOLUTION: In order to solve the problem, the suspending tool 8 of the bridge member of the invention includes: a holder part 18 holding the opposite end faces of the bridge members W in the clamping state; a suspending slider 19 connected to the end of the suspending cable 7 delivered from a suspending apparatus 6 and moved toward both held end faces of the bridge members W; and a tilting mechanism 20 for moving the suspending slider 19. The tilting mechanism 20 is constructed by a chain block 26 for rotation. This carry and install apparatus 1 of the bridge member is provided with the above suspending tool 8, and in this carry and install method of the bridge member, the above suspending tool 8 and the carry and install apparatus 1 are used. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bridge member suspension jig capable of setting a posture of a bridge member such as a corrugated steel plate used as a web (belt plate) of a bridge to a desired installation posture while transporting the bridge member to the installation site. The present invention relates to a member transportation installation apparatus and a bridge member transportation installation method.

  Bridge members include, in addition to plate-shaped corrugated steel plates, rod-shaped concrete struts attached to prestressed concrete girders, rod-shaped steel truss diagonal members, tubular steel pipe struts, and the like.

  As shown in FIG. 12, the bridge-like structure 100 includes a foundation 101 buried in the ground, a bridge pier 102 raised from the foundation 101, a bridge 103 bridged between adjacent bridge piers 102, and the like. Yes. Further, the bridge girder 103 has a structure in which a web 106 is interposed between an upper floor slab 104 and a lower floor slab 105 as shown in FIG. In FIG. 13, a web 106 using a corrugated steel sheet 107 is shown. The web 106 using the corrugated steel sheet 107 is formed of a corrugated steel sheet 107 having a predetermined length, and a high-pressure bolt in the girder length direction A by overhanging. And it is constructed by using welding or the like, and erected to a desired length.

  Non-Patent Document 1 below discloses a conventional erection procedure for such a corrugated steel sheet 107. For the construction of the corrugated steel plate 107, as shown in FIGS. 14 to 17, a truss structure traveling base 109 having a parallelogram in side view is used. The suspension arm 110 extending forward in the beam length direction A of the traveling frame 109 has four chain blocks 111A as suspension devices in a total of four locations, two in the beam length direction A and two in the width direction B. 111B, 112A, and 112B are provided. Further, another suspension arm 113 is also provided below the suspension arm 110, and this suspension arm 113 is provided with two chain blocks 114 and 115 in the direction B perpendicular to the girder length. ing.

  And when constructing the corrugated steel plate 107 using such a traveling frame 109 and the six chain blocks 111A, 111B, 112A, 112B, 114, 115, the procedure as shown in FIGS. I was going. FIG. 14 shows a state in which the corrugated steel plate 107 is conveyed while being held in a horizontal state. In this case, using the four chain blocks 111A, 111B, 112A and 112B attached to the upper suspension arm 110, the corrugated steel plate 107 is held horizontally at four points to move forward in the longitudinal direction A. The corrugated steel plate 107 is moved horizontally.

  Next, the corrugated steel plate 107 is moved downward and temporarily placed on the lower frame 116. The chain blocks 112A and 112B are separated from the corrugated steel sheet 107, and the suspension chain fed out from the two chain blocks 114 and 115 attached to the lower suspension arm 113 as shown in FIG. Connect to the tip in direction A. Then, the corrugated steel sheet 107 is brought into a vertical posture by largely winding up the suspension chain fed out from the chain blocks 114 and 115.

  Next, as shown in FIG. 16, after the rear chain blocks 111A and 112B attached to the upper suspension arm 110 are cut off, the chain block 114 attached to the lower suspension arm 113 is moved to 90. Rotate and move horizontally in the direction B perpendicular to the girder length. Thereafter, the chain block 114 is moved horizontally in the girder length direction A to bring the corrugated steel plate 107 to the installation position.

  Further, when the corrugated steel plate 107 is installed with a predetermined inclination angle, the suspension chains of the front chain blocks 111A and 112A attached to the upper suspension arm 110 are connected to the corrugated steel plate 107 as shown in FIG. The corrugated steel plate 107 can be installed at a predetermined gradient by connecting to the lower end and appropriately adjusting the feeding length of the suspension chain.

  Therefore, in the case of such a conventional bridge member transport installation apparatus or bridge member transport installation method, a large number of chain blocks and a plurality of suspension arms are required. In addition, there has been a complicated replacement work in which the suspension chain that is fed out from the chain block is replaced in accordance with the progress of the work.

Takao Kimizu and 5 others (Aoki, Harada, Kamiyama, Shoji, Maruyama), “Bridge and Foundation” Vol. 37 No1 January 2003 P15-24 “Design, construction and vibration test of Kattegawa Bridge”

  The present invention has been made in light of the existence of such background technology and problems of the background technology, and reduces the number of suspension devices to be used, and makes it difficult to replace a complicated suspension rope. It is an object of the present invention to provide a bridge member suspension jig, a bridge member transport installation device, and a bridge member transport installation method that can efficiently transport and install a bridge member without repeating.

  In order to solve the above-mentioned problem, a bridge member suspension jig according to the first aspect of the present invention includes a holder portion that holds the opposite end surfaces of the bridge member in a sandwiched state, and a suspension cable that is fed from the suspension device. A suspension slider that is connected to an end portion of the body and can move toward both end surfaces of the bridge member sandwiched between the body and an inclination mechanism that moves the suspension slider. It is.

  According to the first aspect of the present invention, the bridge member can be moved horizontally and vertically, tilted forward, and swung around the suspension wire by using only one suspension device. The bridge member can be held, transported and installed efficiently with a simple work procedure with a small number of parts. Further, since the bridge member can be transported while being held in a horizontal state by using the lifting jig, it can be used when a large bridge member is transported or when the height of the transport portion is not so high.

A bridge member suspension jig according to a second aspect of the present invention is the bridge member according to the first aspect, wherein the holder portion is swingable with respect to the main body frame and a main body frame extending to opposite end surfaces of the bridge member. A swing bracket to be connected and a slide bracket slidably connected to the main body frame, and the main body frame is provided with a guide mechanism for guiding the movement of the suspension slider It is a feature.
According to the second aspect of the present invention, the present invention can be applied to bridge members having various end face angles due to the presence of the swing bracket, and can be applied to bridge members having various sizes due to the presence of the sliding bracket. Further, since the guide mechanism is provided, the suspension slider can be smoothly moved and the bridge member can be tilted well.

A suspension jig for a bridge member according to a third aspect of the present invention is the suspension hanger in the first or second aspect, wherein the suspension slider is connected to a suspension cable body with respect to the slider body; The rotating hanger connected to the tilting mechanism is pivotably connected to the tilting mechanism.
According to the third aspect of the present invention, the connection between the suspension slider and the suspension cable body and the connection between the suspension slider and the tilting mechanism are performed independently without interfering with each other. Can be smoothly tilted, moved and turned.

In the bridge member suspension jig according to the fourth aspect of the present invention, in any one of the first to third aspects, the tilting mechanism is configured such that the tilting mechanism is one of the holder portions extending to the opposite end face side of the bridge member. It is composed of a rotating chain block spanned between the end portion and the suspension slider, and the operation means for changing the extension state of the chain block at the one end portion or the other end portion of the holder portion. It is provided so that a part may be located.
According to the fourth aspect of the present invention, the suspension slider can be moved by a relatively simple configuration in which the operating length of the chain of the rotation chain block is variable, and the bridge member is tilted by changing the suspension position. Is possible. Moreover, since the operation part of the operation means is provided so as to be located at the end of the holder part, it is easy for the operator to perform the tilting work of the bridge member.

A bridge member transport installation apparatus according to a fifth aspect of the present invention includes a travel base that moves forward and backward on a travel rail, and a suspension that is provided near the tip of the travel base and moves while being guided by a guide beam. A suspension jig for the bridge member connected to the end of the suspension cable body fed out from the suspension device, wherein the suspension jig for the bridge member is any one of the first to fourth ones. The bridge member suspension jig according to the aspect is characterized in that it is a feature.
According to the fifth aspect of the present invention, equipment such as an existing traveling platform can be used as it is, and the cost of the apparatus can be reduced, combined use, and leased. In addition, the bridge member can be moved horizontally and vertically, tilted forward, and swiveled around the suspension wire by using only one suspension device. It is possible to hold, transport and install the bridge member according to the work procedure. Further, since the bridge member can be transported while being held in a horizontal state by using the lifting jig, it can be used when a large bridge member is transported or when the height of the transport portion is not so high.

According to a sixth aspect of the present invention, in the fifth aspect, the bridge member transporting and mounting apparatus is characterized in that the suspension device is constituted by a single suspension chain block.
According to the sixth aspect of the present invention, the configuration of the suspension device can be made extremely simple, and the complicated replacement work of the suspension rope required when a plurality of suspension devices are used becomes unnecessary. .

A method for transporting and installing a bridge member according to a seventh aspect of the present invention includes an attachment step of attaching a suspension jig to a bridge member and attaching an end of a suspension rope extending from the suspension device to the suspension jig; In the state where the bridge member to which the suspension jig is attached is suspended, it is moved horizontally above the installation site. It is characterized by comprising a vertical moving step and a swivel installation step in which the bridge member is swiveled around the suspension cable body, brought into alignment with the installation site, and installed.
According to the seventh aspect of the present invention, it is possible to efficiently carry, tilt, turn, and align the bridge member in a short time without performing the replacement work of the suspension cable.

  Here, in the tilting vertical movement step, when tilting the bridge member, a tilt assisting wire is attached to one end of the suspension jig, and the bridge member starts tilting while being held by the tilt assisting wire. If the tilting auxiliary wire is removed when the tilting posture of the bridge member is stable, the swinging of the bridge member that occurs when tilting the bridge member is prevented, and the tilting operation of the bridge member can be performed safely, smoothly and easily. Can be done.

  According to the present invention, the number of suspension devices to be used can be reduced, and the bridge member can be transported and installed in a short time without repeatedly performing complicated replacement work of the suspension cable. In addition, since equipment such as an existing traveling platform can be used as it is, the cost of the apparatus can be reduced, combined use, and leased.

  Hereinafter, a bridge member suspension jig, a bridge member transport installation apparatus, and a bridge member transport installation method according to the present invention will be described. In the following explanation, the corrugated steel sheet used for the web of the bridge girder is taken as an example of the bridge member, and an outline of the overall construction of the bridge member transport and installation apparatus used for the corrugated steel sheet overhang construction is first based on the following embodiment. Next, a specific configuration of the bridge member suspension jig used in the apparatus will be described. The method for transporting and installing the bridge member will be described together with the operation mode of the transporting and installing apparatus for the bridge member, and finally, another embodiment of the present invention will be briefly described.

  FIG. 1 is a side view showing the overall configuration of a bridge member transport installation apparatus, and FIG. 2 is a front view of the bridge member transport installation apparatus. FIG. 3 is a perspective view showing a state in which a bridge member holding jig is attached to the bridge member. FIG. 4 is a plan view showing a state in which a bridge member suspension jig is attached to a bridge member whose opposite end faces are inclined, and FIG. 5 is a bridge member suspension jig in which the opposite end faces are parallel to each other. It is a top view which shows the state which attached. FIG. 6 is a plan view showing the suspension jig for the bridge member, and FIG. 7 is a side view showing the suspension jig for the bridge member.

  FIG. 8 is a side view (a) and a front view (b) of the bridge member transport installation apparatus showing the horizontal movement process in the bridge member transport installation method. FIG. 9 is a side view (a) and a front view (b) of the bridge member transport installation apparatus showing an initial state in which the tilt assisting wire is used in the tilt vertical movement step in the bridge member transport installation method. FIG. 10 is a side view (a) and a front view (b) of the bridge member carrying and installation apparatus showing a state where the tilting auxiliary wire is removed and the tilting and vertical movement are further advanced. FIG. 11 is a side view (a) and a front view (b) of a bridge member transport installation apparatus showing a swivel installation process in the bridge member transport installation method.

[Example]
The bridge member transport and installation device 1 includes a traveling rail 3 installed on the upper surface of the end portion of the existing bridge girder 2 in the middle of the overhang construction, and a guide extended to a position slightly overhanging the traveling rail 3. Beams 4a and 4b, a traveling frame 5 provided between the traveling rail 3 and the guide beams 4a and 4b, a suspension device 6 attached to the guide beams 4a and 4b, and a suspension cable fed from the suspension device 6 And a bridge member suspension jig 8 connected to the end of the body 7. The guide beams 4a and 4b can be in a state of being aligned with each other, and one guide beam 4b can be moved in a direction perpendicular to the longitudinal direction of the guide beam to be shifted from the other guide beam 4a. It is configured as follows. Specifically, the guide beam 4a is fixed, but the other guide beam 4b is configured to be movable by a self-propelled means on a rail 50a extending in a direction orthogonal to the longitudinal direction of the guide beam. Has been. Thereby, a bridge member can be conveyed now to a desired installation position.

  The traveling platform 5 is a truss structure frame having a parallelogram in side view and is provided so as to project forward in the girder length direction A (bridge girder projecting direction). It is the upper chord material 9 of the traveling frame 5. In addition, a traveling drive wheel 11 that rolls on the traveling rail 3 by receiving a driving force from the traveling motor 10 is provided at a lower portion near the front of the traveling mount 5, and a traveling drive wheel 11 is disposed at a lower portion near the rear of the traveling mount 5. A driven wheel 12 and an anchor jack 13 for adjusting the installation angle of the traveling frame 5 are provided.

  The suspension device 6 is attached to the guide beams 4a and 4b, and is constituted by a single suspension chain block 14. As the suspension chain block 14, an electric chain block having a suspension load of about 2.8 tons can be used as an example. A suspension hook 16 is provided at the tip of a suspension chain 15 that is an example of the suspension rope 7 that is fed out from the suspension chain block 14, and the suspension hook 16 is used to suspend the bridge member of the present invention. The jig 8 is locked and suspended together with the corrugated steel sheet W that is a bridge member. Further, a tilt assisting wire 17 shown in FIG. 9 that is used as an auxiliary when tilting the corrugated steel sheet W is provided between the suspension jig 8 and the traveling frame 5 or the guide beams 4a and 4b as required. Is provided.

  The suspension jig 8 for the bridge member is connected to a holder portion 18 that holds the opposite end surfaces of the corrugated steel sheet W in a sandwiched state, and a suspension hook 16 at the end of the suspension chain 15 that is fed out from the suspension chain block 14. The suspension slider 19 is provided with a tilting mechanism 20 that moves the suspension slider 19. The holder portion 18 is connected to the main body frame 21 extending to the opposite end face side of the corrugated steel plate W, the swing bracket 22 slidably connected to the main body frame 21, and the slidable connection to the main body frame 21. The sliding bracket 23 is provided.

  The main body frame 21 is a long rectangular frame-like member, and a guide rod 25 as a guide mechanism for guiding the movement of the suspension slider 19 is provided inside. A reverse movement preventing nut 55 is screwed to the guide rod 25 at a portion closer to the swing bracket 22 than the suspension slider 19, and the suspension slider 19 is moved and adjusted by changing and adjusting the screwing position. The holder 18, that is, the corrugated steel sheet W is prevented from inclining in the direction opposite to the inclination direction planned to move carelessly toward the 22 side.

  Near the end of the main body frame 21 on the side to which the swing bracket 22 is connected, it is connected to the extension side locking hook 44 at the end of the rotating chain 27 that is fed out from the rotating chain block 26 that constitutes the tilting mechanism 20. The locking member 29 is provided in a fixed state. For example, the locking member 29 starts up two triangular plate-like side plates 31 on a base plate 30 shaped like a baseball base, and an extension side locking hook 44 is provided between the side plates 31. A locking rod 32 that is directly locked is bridged. A slit 33 extending in the longitudinal direction is provided on the bottom surface of the main body frame 21, and left and right side edges of the slit 33 serve as guide edge portions 34 that engage with the sliding bracket 23.

  The swing bracket 22 is a member that swings around a swing shaft 35 that penetrates the main body frame 21 and the swing bracket 22, and when both end surfaces of the corrugated steel sheet W are inclined as shown in FIG. , Used to adjust its tilt angle. On the other hand, the sliding bracket 23 is a member having an engagement top plate 36 that engages with the guide edge portion 34 in the main body frame 21, and as shown in FIG. Used by sliding on.

  A plurality of reinforcing plates 37 having L-shaped cross sections are attached to flanges constituting both end faces of the corrugated steel sheet W by welding or the like. The surface on the sliding bracket 23 side of the swing bracket 22 and the reinforcing plate 37 of the corrugated steel plate W are connected and fixed via an L-shaped fixture 24, and the sliding bracket 23 similarly has the L-shaped fixture 24 attached thereto. Accordingly, the corrugated steel sheet W can be suspended by the suspension jig 8. Here, the L-shaped fixture 24 is bolted to the reinforcing plate 37 in a fixed position, and the swing bracket 22 and the slide bracket 23 slide in a direction orthogonal to the longitudinal direction of the main body frame 21, respectively. Bolts are fastened in a possible state. By sliding in the orthogonal direction, the center of gravity can be easily aligned when the corrugated steel sheet W is suspended.

  The suspension slider 19 is fitted with the above-described guide rod 25 provided on the holder portion 18, and the suspension body 38 that is guided by the guide rod 25 and slides, and the suspension hanger that rotates about the rotation shaft 40. 41 and the rotation hanger 42 are provided. The rotating shaft 40 is spanned between two triangular plate-like side plates 39 raised from the upper surface of the slider body 38. The suspension hanger 41 and the rotation hanger 42 have substantially the same shape, and have a wide interval on the base end side that is fitted to the rotation shaft 40, and are connected to the suspension chain block 14 or the tilt mechanism 20. This is a hanger-like member in which two brackets are arranged in an interlaced state so that the gap is narrowed on the free end side.

  As an example, the tilting mechanism 20 is configured by a manual rotation chain block 26 having a load resistance of about 3 tons. The fixed side locking hook 43 provided on the base end side of the rotation chain block 26 is locked to the free end side of the rotation hanger 42 attached to the suspension slider 19. On the other hand, the extension side locking hook 44 provided on the extension side of the rotation chain block 26 is locked to the locking rod 32 of the locking member 29 provided on the upper surface of the holder portion 18 as described above. . Further, a rotating chain 27 is wound around the rotating chain block 26, and as an operating means for changing the extended state of the rotating chain 27 at the extension side portion connected to the extension side locking hook 44. An operation chain 45 is provided. Note that the end of the operation chain 45 is an operation portion, and is provided so as to be located at any end of the holder portion 18 to improve the workability of the tilting work.

  Next, the bridge member suspension jig 8 of the present invention configured as described above and the operation mode of the bridge member transport installation device 1 of the present invention provided with the suspension jig 8 are combined with the present invention. A method for transporting and installing the bridge member will be described. In the following description, the method for transporting and installing a bridge member according to the present invention is divided into four steps: (1) mounting process, (2) horizontal movement process, (3) tilting vertical movement process, and (4) swivel installation process according to the construction procedure. I will explain.

(1) Mounting process (see FIGS. 1 to 5)
The attachment step is a step of attaching the suspension jig 8 to the corrugated steel plate W and attaching the suspension hook 16 at the end of the suspension chain 15 extending from the suspension chain block 14 to the suspension jig 8. In this case, as shown in FIGS. 4 and 5, the swing bracket 22 and the slide bracket 23 are appropriately adjusted according to the shape or size of the corrugated steel plate W. This mounting operation is performed on the existing bridge girder 2. The suspension chain block 14 is positioned on the guide beam 4a, and both the guide beams 4a and 4b are aligned.

  Further, the rotating chain block 26 is operated so that the corrugated steel plate W is held in a horizontal position, and the suspension slider 19 is adjusted to be located at the center of gravity of the corrugated steel plate W. Then, the suspension chain 15 of the suspension chain block 14 is wound up, and the corrugated steel sheet W held horizontally by the suspension jig 8 is raised onto the transport track.

(2) Horizontal movement process (see Fig. 8)
The horizontal movement process is a process of moving the corrugated steel sheet W, to which the lifting jig 8 is attached, to the upper part of the installation site in a suspended state. In this case, as shown in FIG. 8, the suspension chain block 14 is moved from the guide beam 4a toward the guide beam 4b with the corrugated steel plate W held horizontally, and is moved to the upper part of the installation site. That is, the suspension chain block 14 moves onto the guide beam 4b. In addition, after the corrugated steel sheet W is moved upward at the installation site, the tilt assisting wire 17 indicated by the phantom line in FIG. In this state, it is attached to the upper end of the holder portion 18).

(3) Tilt vertical movement process (see FIGS. 9 and 10)
The tilting vertical movement process is a process of moving the suspension position of the corrugated steel sheet W and lowering the corrugated steel sheet W to the installation site while tilting the corrugated steel sheet W. In this case, as shown in FIG. 9, the lower end of the corrugated steel sheet W is rotated leftward in FIG. 9A while holding the upper end of the holder portion 18 by the tilt assisting wire 17. Tilt up and go. Then, when the tilting posture of the corrugated steel sheet W is stabilized, the tilt assisting wire 17 is removed.

  Then, as shown in FIG. 10, when the operator operates the operation chain 45 of the rotation chain block 26, the suspension slider 19 is moved to the end side of the holder portion 18, and the corrugated steel plate W is shown as shown. In the tilted state. At the same time, the suspension chain 15 of the suspension chain block 14 is extended, and the corrugated steel sheet W is lowered to the installation site.

(4) Turning installation process (see Fig. 11)
The swivel installation process is a process in which the corrugated steel sheet W is swiveled around the suspension chain 15, aligned with the installation site, and installed. In this case, as shown in FIG. 11, the corrugated steel sheet W suspended in a tilted posture is swung by joint work with an operator waiting at the installation site, and the guide beam 4 b is moved by the self-propelled means. The installation is completed by moving on the rail 50a, placing the corrugated steel sheet W to the end of the existing corrugated steel sheet W, and connecting them using a high-strength bolt or the like.

[Other embodiments]
The bridge member suspension jig 8, the bridge member transport installation device 1, and the bridge member transport installation method according to the present invention are based on the configuration as described above, but depart from the gist of the present invention. Of course, it is possible to change or omit the partial configuration within the range not to be performed. For example, the traveling platform 5 does not have to be a dedicated traveling platform 5 of the bridge member transport installation apparatus 1 according to the present invention, and it is possible to use another traveling platform 5 that is already installed, commercially available, or leased. The tilt assisting wire 17 used in the tilting vertical movement process is not necessarily provided, and can be omitted when the corrugated steel sheet W can be tilted stably. The rotating chain block 26 may be an electric chain block. In this way, the suspension slider 19 can be moved by remote control operation. In addition, it is possible to increase the number of the suspension devices 6 to two, or to configure the suspension device 6 with a winch and the suspension cable body 7 with a suspension wire.

  The present invention is to carry and install bridge members used in bridge extension work, more specifically, to reduce the number of suspension devices to be used and to perform complicated suspension cable replacement work. This is useful when you want to transport and install bridge members efficiently.

It is a side view which shows the whole structure of the conveyance installation apparatus of a bridge member. It is a front view which shows the whole structure of the conveyance installation apparatus of a bridge member. It is a perspective view which shows the state which attached the suspension jig | tool of the bridge member to the bridge member. It is a top view which shows the state which attached the suspension jig | tool of the bridge member to the bridge member in which the end surface which opposes inclined. It is a top view which shows the state which attached the suspension jig | tool of the bridge member to the bridge member with which the end surface which opposes is parallel. It is a top view which shows the suspension jig | tool of a bridge member. It is a side view which shows the suspension jig | tool of a bridge member. It is the side view (a) and front view (b) of the bridge member conveyance installation apparatus which show the horizontal movement process in the conveyance installation method of a bridge member. It is the side view (a) and front view (b) of the bridge member conveyance installation apparatus which show the initial state which uses a tilting auxiliary wire in the inclination vertical movement process in the conveyance installation method of a bridge member. It is the side view (a) and front view (b) of the bridge member carrying installation apparatus which shows the state which removed the inclination auxiliary wire same as the above, and also the inclination and vertical movement advanced. It is the side view (a) and front view (b) of the bridge member conveyance installation apparatus which show the turning installation process in the conveyance installation method of a bridge member. It is a side view which shows the structure of each part of a bridge structure. It is a perspective view which shows the structure of each part of a bridge. It is the side view (a) and front view (b) which show the work form at the time of the horizontal movement in the conveyance installation work of the conventional bridge member. It is the side view (a) and front view (b) which show the operation | work form at the time of the inclination vertical movement in the conveyance installation work of the conventional bridge member. It is the side view (a) and front view (b) which show the work form at the time of the alignment horizontal movement in the conveyance installation work of the conventional bridge member. It is the side view (a) and front view (b) which show the work form at the time of fine adjustment installation in the conveyance installation work of the conventional bridge member.

Explanation of symbols

1 Transport installation equipment (for bridge members), 2 bridges, 4a, 4b guide beams,
5 Traveling platform, 6 Suspension device, 7 Suspension cable, 8 Suspension jig (of bridge member),
9 suspension arm, 10 travel motor, 11 travel drive wheel, 12 travel driven wheel,
13 Anchor jack, 14 Suspension chain block, 15 Suspension chain,
16 Suspension hook, 17 Tilt assist wire, 18 Holder part, 19 Suspension slider,
20 tilt mechanism, 21 body frame, 22 swing bracket, 23 slide bracket, 24 L-shaped fixture, 25 guide rod (guide mechanism), 26 chain block for rotation,
27 Rotating chain, 29 Locking member, 30 Base plate, 31 Side plate, 32 Locking rod, 33 Slit, 34 Guide edge, 35 Oscillating shaft, 36 Engaging top plate, 37 Reinforcing plate,
38 Slider body, 39 Side plate, 40 Rotating shaft, 41 Hanging hanger, 50a Rail 42 Rotating hanger, 43 Fixed side locking hook, 44 Extension side locking hook,
45 Operation chain (operation means), A Girder length direction, B Width direction, W Corrugated steel plate (Bridge member)

Claims (7)

  A holder portion that holds the opposite end surfaces of the bridge member in a sandwiched state, and a suspension slider that is connected to the end portions of the suspension cable body that is fed from the suspension device and that can move toward both the sandwiched end surfaces of the bridge member And a tilting mechanism for moving the suspension slider. A bridge member suspension jig characterized by comprising:   In Claim 1, the said holder part is slidably connected with respect to the main body frame, the main body frame extended to the opposing end surface side of the bridge member, the swing bracket connected with respect to a main body frame so that rocking is possible. A bridge member suspension jig, wherein the main body frame is provided with a guide mechanism for guiding the movement of the suspension slider.   3. The suspension slider according to claim 1, wherein the suspension slider is configured to pivotably connect a suspension hanger connected to the suspension cable body and a rotation hanger connected to the tilt mechanism with respect to the slider body. A suspension jig for a bridge member, wherein   4. The tilting mechanism according to claim 1, wherein the tilting mechanism is constituted by a rotating chain block that is bridged between one end portion of a holder portion that extends to the opposite end face side of the bridge member and the suspension slider. The bridge member is characterized in that an operating portion of an operating means for changing the extension state of the chain block is located at the one end portion or the other end portion of the holder portion. Holding jig.   Connected to the end of the suspension cable body that is moved near the tip of the travel platform, moves while being guided by the guide beam, and is extended from the suspension system. The bridge member suspension jig is a bridge member suspension jig according to any one of claims 1 to 4, wherein the bridge member suspension jig is a bridge member suspension jig. Transportation and installation equipment for bridge members.   6. The transportation and installation device for a bridge member according to claim 5, wherein the suspension device is constituted by a single suspension chain block.   In the state of attaching the suspension jig to the bridge member, attaching the end of the suspension cable extending from the suspension device to the suspension jig, and the bridge member to which the suspension jig is attached, A horizontal movement process that moves the installation site upward, a tilting vertical movement process that moves the suspension position of the bridge member to lower the bridge member while tilting the bridge member, and swivels the bridge member around the suspension cable And a swivel installation step for positioning and moving to the installation site, and a method for transporting and installing the bridge member.

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