JP2008303657A - Girder installation apparatus and girder installation carriage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To deliver a girder from an existing bridge girder toward a traveling girder located at a stepped location by carrying out continuous work, and to smoothly, safely, and positively install the girder at a predetermined location, related to a girder installation device and a girder installation carriage, for example, the installation work of a bridge girder. <P>SOLUTION: Two self-propelled two-stage carriages 3 are arranged on a rail 2 of the existing main girder 1, a turn table mechanism 6 is set between an upper-stage slave carriage 5 and a lower-stage master carriage 4 of each two-stage carriage 3, and height adjusting jacks 7 are arranged between the turn table mechanism 6 and the master carriage 4. In this manner, front and rear ends of a girder member 8 to be installed are borne by the two two-stage carriages 3. Then, after the master carriage 4 reaches the front end of the existing main girder 1 and stops, the slave carriage 5 is started to travel on a rail 2" along the traveling girder 14, and thus the girder member 8 is delivered from the existing main girder 1 to the traveling girder 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a girder installation device and a girder installation carriage,
For example, in bridge construction work, it is an object to send a girder from an existing main girder to a traveling girder side with a step by continuous work so that the girder can be constructed smoothly and safely at a predetermined location.

In general, many such girder installation devices have been filed and disclosed. Among them, for example, there is the following invention to move from an existing bridge girder to a traveling girder to be installed.
The invention of Japanese Patent Publication No. 06-089528 (Patent No. 1962527) Invention of JP-A-10-168828 (Patent No. 3711355)

In Patent Document 1, since there is almost no step in the connection portion between the existing bridge girder and the following traveling girder, there is no problem in continuous traveling with one carriage.
Moreover, in "FIG. 3" of patent document 2, there exists a level | step difference in the connection site | part of the existing bridge girder and the following traveling girder, and the following means are taken out in this case.

That is, in Patent Document 2, the subsequent divided digits are sent out, and then, as shown in FIGS. 3 and 4, the subsequent divided digits 2 are also placed on the carriage 5 and sent out in the same manner as the preceding divided digits 1. . At this time, the height of the carriage 5 is adjusted so that the bottom surface of the succeeding divided beam is higher than the upper surface of the preceding divided beam 1 constructed. Subsequently, the succeeding divided digit 2 is sent out using the installed preceding divided digit 1 as a travel path. At this time, if the carriage 5 is attached to the bottom surface of the succeeding divided beam 2 and the rail 4 is provided on the upper surface of the preceding divided beam 1, the feeding of the succeeding divided beam 2 is facilitated. In this way, the preceding divisional digit 1 is used as a support member, and the subsequent divisional digit 2 is overlapped with the preceding divisional digit 1 in two stages.
Therefore, a system is adopted in which a separate carriage 5 is placed on the rail 4 of the preceding divisional digit 1 having a high step and the subsequent divisional digit 2 is sent out.

  The present invention is provided in view of the above-described conventional points, and the first of the present invention is the arrangement of two self-propelled parent-child carts arranged on the upper and lower stages on the rail of the existing main girder. Then, the front and rear ends of the girder material to be installed are supported by the parent and child carriage, and after the lower main carriage reaches the tip of the existing main girder and stops, the upper stage carriage is started to run. It travels on the rail on the side of the traveling garter and feeds the girders from the existing main girder to the side of the traveling garter.

  According to a second aspect of the present invention, in the girder installation device, two self-propelled parent-child carts are arranged on the rails of the existing main girder, and a turntable mechanism is provided between the upper and lower parent carts in each parent-child cart. Provided with a height adjusting jack between the turntable mechanism and the main carriage, supporting the front and rear ends of the girders to be installed with the main and sub carriages, and the lower main carriage at the tip of the existing main girder. After reaching and stopping the main carriage, the upper stage child carriage is started to travel and travels on the rail on the traveling garter side so that the girders are sent from the existing main girder to the traveling garter side.

  According to a third aspect of the present invention, there is provided a turntable mechanism between the lower stage support base and the upper stage support base of the self-propelled parent-child cart in the erection trolley of the girder. A height adjusting jack is provided between the main carts, a rail for the upper stage cart is provided on the plane of the upper stage support of the turntable mechanism, and the upper stage cart is disposed on the rail.

Since the present invention has the above configuration, the following effects are obtained. When shifting from the existing bridge girder to the traveling girder of the next process, the child carriage mounted on the parent carriage can start driving and continuously send out.
Moreover, since it shifts from the existing bridge girder to the traveling girder side having a high step, it is not necessary to lift up or move to another carriage, and the work is safe and efficient.

Next, the best mode for carrying out the present invention will be described. In the figure, 1 is an existing main girder, 2 is a rail installed on the main girder, 3 is an upper and lower two-stage girder carrying parent-child carriage, and the lower stage is a self-propelled main carriage 4 by a drive motor M. The upper stage is a self-propelled child cart 5 by the same drive motor M as that for the master cart. A turntable mechanism 6 is provided between the parent cart 4 and the child cart 5. In the turntable mechanism, an annular large-diameter gear 63 is installed on the upper support base 62, and a small-diameter gear 64 that meshes with the outer peripheral gear of the large-diameter gear 63 is provided on the lower support base 61. The upper stage support 62 is set so as to be able to rotate in the horizontal direction.
Reference numeral 7 denotes a plurality of height adjustment jacks installed between the base surface of the lower base carriage 4 and the lower support base 61 of the turntable mechanism 6. The rail height of the upper stage carriage 5 is set to the rail height on the traveling girder side. Used when adjusting to. The child cart 5 is arranged on a rail 2 ′ installed on the plane of the upper stage support 62.

Reference numeral 8 denotes a girder material to be connected to a part of the existing PC main girder 1. In FIGS. 1 to 4, divided girder blocks 8 ′ respectively loaded on a plurality of self-propelled carriages placed on the rail 2. -8 "to 8 ⁿ are integrated by a segment construction method to form a PC girder. The girder material is of the Gerber bridge type, and both end portions in the length direction are made into cutout shapes C, .9 intermediate seams J length direction is provided is attracting autonomous guided vehicle, divided digit block 8 ', 8 "8 the ⁿ and loaded from the outside of the existing main beam 1 existing main beam A turntable mechanism 6 that can rotate after being placed on the rail 2 is provided.

10 and 11 are front and rear piers, 12 and 13 are front and rear gate towers installed on the piers 10 and 11, and 14 is a traveling girder temporarily installed between the front and rear gate towers. There is a step H corresponding to the height of the traveling girder between the plane at the base end 14 ′ of the traveling girder adjacent to the part 1 ′ and the plane of the existing main girder 1. On the plane of the traveling girder, a rail 2 "having the same shape as the rail 2 'of the child carriage 5 in the parent / child carriage 3 is installed. Reference numeral 15 denotes the rail 2' of the child carriage 5 and the rail 2" of the traveling girder. 16 is a hand stretcher located at the tip of the traveling girder 14, 17 is a suspended girder disposed above the traveling girder and supported by the portal towers 12 and 13, 18 At the rear part of the girder 8, the girder is lifted up and the divided girder is integrated to form the girder 8, and then the rear parent-child carriage 3 ′ and the self-propelled carriage 9 are moved backward (see FIG. 2) A heavy machine 19 is a crane arranged on the existing main girder 1. Of the rear parent-child carriage 3 'and the drawn self-propelled carriage 9, the rear parent-child carriage 3' is lifted and lifted again. To support the rear part of the girders 9 That. 20 is a Sandor for支受the front and rear portions 8 '· 8 ⁿ of PC spar 8 with child carriage 5 of the, Throne 21 for tilt adjustment in digit支受is provided on the top surface

"Specific construction examples"
(1) First, the front parent-child cart 3 loaded with the leading divided beam 8 'at a predetermined position on the rail 2 in the existing main beam 1 is stopped so as not to move. After that, successively bring the self-propelled carriage 9 loaded with the divided digit beams 8 "to 8 ⁿ in a daisy chain, and the rear parent / child cart 3 'is arranged close to the end and each divided digit is placed. In this state, the divided girders are integrated by a segment construction method to produce a single PC girder 8 (FIG. 1), where the PC girder has both end portions in its length direction. It is used to form a Gerber bridge system with a hinge seam.
(2) Next, after completion of the PC girder 8, the rear part of the PC girder is lifted up by the heavy machine 18 and the rear parent-child cart 3 ′ is self-propelled and moved away. Then, it is lifted by the crane 19. Subsequently, the self-propelled carriage 9 is made to retreat self-propelled, and is moved away under the suspended parent-child carriage 3 '(FIG. 2).
(3) After the withdrawal self-propelled carriage 9 is completed, the rear parent-child carriage 3 'is lowered from the crane 19 onto the rail 2, and then self-propelled to enter under the rear portion of the girder 9 and stop. In this state, the rear part of the girder 8 supported by the heavy machine 18 is lowered and supported on the parent-child cart 3 '(FIG. 3).
(4) PC The spar 8, the支受and child carriage 3.3 before and after the portion which is loaded with 'at its front and rear is advanced self-propelled, child carriage 5 closer to the proximal end 14 ₁ of the traveling girder 14 The front end of the rail is stopped at a position where it contacts the base end of the rail 2 'of the traveling girder 14 (FIG. 3). At that time, after adjusting the height of the rail 2 ′ of the child cart 5 with the jack 7, both the rails 2 ′ and 2 ″ are connected with the connecting tool 15 (FIG. 6).
(5) In this state, only the front side sub-cart 5 and the rear main cart 4 'are self-propelled to advance on the rail 2 "of the traveling girder 14, and the leading end portion of the girder is moved to the front pier 10 In this case, the rear portion of the beam 8 is positioned on the rear pier 11.
There is no problem when the travel distance is non-straight, but when the travel distance is large and the rail 2 "is curved, the turntable mechanism 6 of the front and rear carts 3 and 3 'sets the curve. Drive while responding.
(6) In this state, the PC girder 8 is temporarily suspended by the hanging girder 16 between the front and rear piers 10 and 11.
(7) In the meantime, the front child cart 5 is moved backward by self-propelled to be removed from the traveling girder 14 and returned to the front main cart 3, and the traveling girder 14 is moved forward via the spreader 17. To remove from between the piers 10 and 11.
(8) The PC girder 8 suspended by the suspension girder 16 is lowered and placed on the upper bases of the piers 10 and 11.
(9) Thereafter, the two carriages 3 are returned to their original positions, and the one-step digit feeding operation is completed.
(10) The turntable mechanism 6 of the front and rear carriages 3 and 3 ′ moves the split girder of the PC girder 8 from the outside of the existing main girder 1 to the parent and child carriage 3 ′ on the rail 2 of the existing main girder 1. the PC digit tip portion ₈₁ is placed in front of the child vehicle 3, it is used when placing the rear child carriage 3 'to be diverted from this state. The turntable mechanism 6 is also used when a direction change is made after the divided girder of the PC girder 8 is moved from the outside of the existing main girder 1 and loaded on the self-propelled carriage 9.

  The present invention can be applied not only to the construction work of girders, but also to the case of transporting a transported object via a rail at a stepped place.

It is a front view of the 1st process by the construction work apparatus of the girder which concerns on this invention. It is sectional drawing of the 2nd process from FIG. It is a front view of the 3rd process from FIG. It is a front view of the 4th process from FIG. FIG. 3 is an enlarged side view of the front side self-propelled parent-child cart in FIG. 2. FIG. 4 is an enlarged side view of the self-propelled carriage in FIG. FIG. 7 is an enlarged arrow view taken along line 7-7 in FIG. 5. It is an arrow line view which follows the 8-8 line of FIG. It is an arrow line view which follows the 9-9 line of FIG. It is a front view of the state which loaded the division girder block on the drawing self-propelled carriage. It is the side view rotated 90 degree | times with the turntable mechanism from the state of FIG.

Explanation of symbols

1 ... Existing main girder 2 ... Rail 3 ... Parent-child cart 4 ... Self-propelled parent cart 5 ... Self-propelled child cart 6 ... Turntable mechanism 7 ... Jack for height adjustment 8 ... PC Girder 9 …… Self-propelled carriage 10 …… Front pier 11 …… Rear pier 12 …… Front gate tower 13 …… Rear gate tower 14 …… Girder 15 Coupling tool 16 ... handrail 17 ... hanging girder 18 ... heavy equipment 19 ... crane 20 ... sandal 21 ... throne

Claims (3)

Two self-propelled parent-child carts (3), (3 ') are placed on the rail (2) of the existing main girder (1), and the front and rear ends (8 ₁ ), (8 ⁿ ) is supported by the parent car (3), and after the lower main car (4) reaches the tip of the existing main girder (1) and stops the main car (4), the upper car (5) And running on the rail (2 ") on the side of the traveling garter (14) and feeding the girder (8) from the existing main girder (1) to the side of the traveling garter (14) Girder erection device. Self-propelled parent-child carts (3) and (3 ') are placed on the rail (2) of the existing main girder (1), and the upper and lower carts (5) and lower stages of each parent-child cart (3) and (3') A turntable mechanism (6) is provided between the main carriage (4) and a height adjustment jack (7) is provided between the turntable mechanism (6) and the lower main carriage (4) to try to install it. The front and rear ends (8 ′) and (8 ⁿ ) of the girders are supported by the parent and child carts (3) and (3 ′), and the lower master cart (4) reaches the tip end of the existing main girder (1) After stopping the main carriage (4), the upper trolley (5) is started to run on the rail (2 ") on the traveling garter (14) side and the girder (8) is moved to the existing main girder. A girder installation device characterized in that the girder is sent from (1) to the traveling garter (14) side. A turntable mechanism (6) is provided between the lower pedestal (61) and the upper pedestal (62) of the self-propelled parent-child trolley (3), (3 '), and the turntable mechanism (6) A height adjusting jack (7) is provided between the lower pedestal (61) and the main carriage (4), and the upper pedestal carriage rail (2 ') is placed on the plane of the upper pedestal (62) of the turntable mechanism. ) And a child cart (5) is arranged on the rail.