JP4418405B2 - Heavy material delivery method and delivery device - Google Patents

Description

  The present invention relates to a method and apparatus for delivering a heavy article that is delivered and delivered on a part, and more particularly to a delivery method and apparatus suitable for a long heavy article.

For example, there is a bridge girder delivery, for example.
In order to send out this heavy item (long heavy item (several hundred tons)), a guide means called a bill is attached to the tip, and each piece of the bridge girder is connected by a fixing means such as welding in the assembly yard. A bridge girder support jack is provided on a horizontal jack that is provided with a releasable clamp at one end to hold the H steel provided in the assembly yard, and the horizontal jack is extended while the bridge girder support jack is jacked up to support the bridge girder. After the bridge girder has been sent out by a predetermined amount, the clamp is released and the horizontal jack is contracted to move the H steel clamp position forward in the bridge girder feed direction. For example, Patent Document 1) is used.

By the way, when such a heavy object (bridge girder) is sent out, a work space called an assembly yard is required.
This assembly yard is used when connecting each bridge girder piece, which is a constituent member of the bridge girder, by welding or the like, and is secured at leveling.
For example, the assembly yard may be secured only for one side even though the up line and down line are arranged in parallel.
Depending on the topography, if the assembly yard is secured on both sides, the reason is that the horizontal space of the truck cannot be secured, or if the assembly yard is provided on both sides, the leveling cost will rise. To do.
In such a case, welding in the assembly yard, etc., for example, an already installed bridge girder on the up line is used as a delivery part, and then a heavy object (erection bridge girder) is sent over it, and then a parallel feed called a pretending device. The equipment (parallel bridge girder) is fed in parallel so that it can be used as a bridge girder for down line.

Conventionally, for the delivery of a heavy object that sends out a heavy object (erection bridge girder) at such a delivered part (an already installed bridge girder), a rail or H steel is laid in parallel on the upper part of the delivered part and the two rails are laid. In such a state that the rails and H steel are engaged so as to be able to travel via a carriage, horizontal jacks are provided on both the rear side and the rear side, or the front side is set as a self-propelled carriage so that heavy objects are sent out. I have to.
However, long heavy objects such as bridge girders are often long, such as a total length of 150 m, and the length of rails and H steel is inevitably corresponding to that. Since it was necessary to arrange the books in a straight line, various operations such as transportation, installation and removal were difficult.
In addition, each component piece of long heavy objects usually has a plurality of hanging brackets protruding from the upper surface at intervals, and using this, the crane can be transferred to the truck and lifted from the truck to the assembly yard. After being performed, it is cut, but it is not completely cut and remains as a projection.
When this protrusion is fed out and exposed to the part (the bridge girder already installed), the H steel and rail cannot be laid in a straight line, so the H steel and rail must be laid in a floating state through sleepers, and workability is improved. Make it more troublesome.
Moreover, since the heavy bridge girder is very long, it is very difficult to ensure straightness.
The prior art documents relating to a method for feeding a heavy article (an erection bridge girder) and a delivery apparatus for delivering a heavy article (erection bridge girder) at the delivery part (an already constructed bridge girder) are unknown to the applicant.
Design Registration No. 1154330

The present invention has been made in view of the above-described conventional circumstances, and the intended process is to send out without laying a long rail such as a rail or H-steel on a sent-out part (for example, a bridge girder already installed). An object of the present invention is to provide a method for delivering a heavy object that can deliver a heavy object (for example, a bridge girder for erection) onto a section (for example, a bridge girder that has already been installed).
Another object of the present invention is to provide a method and an apparatus for feeding a heavy object suitable for feeding an erection bridge girder on an erected bridge girder.
Still another object of the present invention is to provide a heavy-weight feeding device that can feed a bridge girder for installation while avoiding protrusions on the upper surface of the bridge girder.
Another object of the present invention is to provide a heavy-duty feeding device capable of feeding the erection bridge girder straightly.

The technical means taken in order to solve the above-mentioned problem is a method for delivering a heavy object,
Temporary receiving means that can be extended and contracted in the vertical direction to be temporarily received by a delivery part that is provided on a heavy object and extends and the heavy article is delivered.
A moving table that is placed on the portion that is sent out upstream or downstream of the heavy receiving direction with respect to the temporary receiving means;
A support means for a heavy object that is provided on a heavy object and that can be slidably engaged with the upper part of the moving table in a delivery direction;
A releasable auxiliary lifting means that is connected to the moving table and lifts the moving table from the fed-out part with the fed-out part as a reaction force part,
Stretching means that is arranged on the upstream side or the downstream side in the delivery direction from the supporting means and that can extend and contract to connect the moving table and the supporting means,
Stroke means is extended or shrunk at the time of receiving a heavy article at the delivered part after contracting the temporary receiving means, and the supporting means for heavy goods is caused to have a frictional force between the moving table and the delivered part. A heavy load feeding step of feeding a heavy load by sliding it on the moving table in a reaction force, and contracting the support means when the temporary receiving means is extended and the heavy load is temporarily received at the fed portion. In addition, the stroke means is contracted or extended in a state where the moving table is lifted upward with the portion sent out by the auxiliary lifting means as a reaction force portion, and the moving table is moved in the feeding direction around the support means. And a moving table moving step to be alternately repeated.
In this delivery method, when the heavy article is long, the provisional receiving means and a delivery apparatus comprising the moving stand, the auxiliary lifting means, the supporting means, and the main receiving means (provisional name) comprising the stroke means are used. A method of synchronizing the delivery devices by arranging them at the front, midway, rear, etc., and synchronizing the propulsive force applying means when sending the support means for heavy objects to the upper part of the moving table after receiving the heavy objects. The method to do can be adopted.
Here, the upstream side in the delivery direction refers to the rear side in the delivery direction, and the downstream side in the delivery direction refers to the front side in the delivery direction.
The stroke means adopts a layout arranged upstream of the support means in the delivery direction (backward in the delivery direction) and a layout arranged downstream of the support means in the delivery direction (front side in the delivery direction). Can do.

In the case of the former layout described above, the temporary receiving means is contracted and the support means is extended so that the moving base is sent out and placed on the part, and the stroke means is extended at the time of receiving the heavy article at the sent-out part. Then, the heavy load is sent out using the supporting means for the heavy load as the reaction force and the frictional force with the fed-out portion of the moving stand as the reaction guide and the upper portion of the moving stand as the slide guide portion (heavy load sending step).
Further, when the temporary receiving means is extended and sent out and a heavy object is received at the part, the moving stand is sent out by the auxiliary lifting means and floated from the part with the contraction of the supporting means. In this state, the stroke means is shrunk, and the moving table is slid in the feeding direction using the heavy load as a reaction force portion, so that the support means and the stroke means at the time of receiving the heavy load have the same relative relationship (for movement). Table movement process).
Then, the temporary receiving means is contracted, and the supporting means is extended so that the moving table is sent out and placed on the portion, thereby enabling the heavy object to be sent out.
In the latter layout described above, the stroke means is contracted at the time of receiving the heavy article, and the supporting means for the heavy article is provided as a reaction force with the frictional force with the fed-out portion of the movement base. A heavy load is sent out using the slide guide portion (heavy load delivery step).
And, at the time of the temporary receiving, with the contraction of the supporting means, the moving base is sent out by the auxiliary lifting means and lifted from the part, and the stroke means is extended, and the moving base is used as a reaction force part. By sliding in the delivery direction, the support means and the stroke means when receiving a heavy object are made to have the same relative relationship (moving table moving step).

In addition, the heavy load is a construction bridge girder, and the fed-out portion is the upper surface of the bridge girder that has been installed, and the built-up bridge girder is sent out and the construction bridge girder is sent out to the upper surface. The auxiliary elevating means includes a reaction force receiving portion at the lower end, which is in contact with the upper surface of the installed bridge girder so as to avoid a protrusion projecting upward, and is installed on the support portion of the reaction force receiving portion. Guide means having guided edges on both side edges of the finished bridge girder, and the moving stand in the moving stage moving step that is levitated from the installed bridge girder by the auxiliary lifting means, the contraction or extension of the stroke means According to the guide means, it is preferable that the bridge is moved on the bridge girder (claim 2).
In the projection, each component piece (bridge girder component piece) of a long heavy article is the cut remaining portion of the hanging metal fitting, etc., and protrudes in the upper surface width direction center portion of the bridge girder component piece, and the reaction force receiving portion ( For example, the traveling wheel) is provided at a position where it slides on the upper surface of the bridge girder that has been erected, avoiding the protrusion.
The auxiliary lifting means lifts the moving table in the moving table moving step by using the bridge girder installed in the reaction force receiving portion (for example, the traveling wheel) as the reaction force portion, and guides the moving table to the guiding means. It is possible to move straight above the installed bridge girder by the guiding action.

  The propulsive force applying means may be synchronized with the extension or contraction of the stroke means at the time of receiving the bridge bridge girder in the installed bridge girder by contracting the temporary receiving means (Claim 3). ).

Moreover, it is a delivery apparatus which implements the delivery method of the heavy article of Claim 2 or 3, Comprising: This delivery apparatus sends out the construction bridge girder which is a heavy article on the constructed bridge girder upper surface, And a temporary receiving means that can extend and retract in the vertical direction with the bridge girder extended and temporarily installed, and a main receiving means for receiving the bridge girder with the installed bridge girder when the temporary receiving means contracts. The main receiving means is provided on the upstream side or the downstream side of the temporary bridge means in the delivery direction of the erection bridge girder, and the main reception means is mounted on the erected bridge girder. And a vertical extension that is provided on the erection bridge girder and engages a moving base slidably in the longitudinal direction of the erected bridge girder, and extends to place the moving pedestal on the erected bridge girder and receive it. An amount-adjustable support means; Auxiliary hoisting means that can be lifted to lift the moving platform from the installed bridge girder by using the installed bridge girder as a reaction force part when the support means is contracted at the time of temporary reception, and both side edges of the installed bridge girder are guided Guide means, and stroke means for connecting the support means and a moving base portion upstream or downstream in the delivery direction with respect to the support means, and the auxiliary elevating means is an upper surface of an installed bridge girder. A guide means is provided at the lower end with a reaction force receiving portion that is slidably contacted while avoiding a protrusion projecting upward, and a guide means having both side edges of the bridge girder installed on the support portion of the reaction force receiving portion as guided portions. The stroke means is extended or shrunk, and a support means for supporting the bridge bridge girder by reacting with a frictional force with the bridge girder of the moving base when the book is received is provided on the upper part of the moving base. In the feed direction In addition, the stroke means is contracted or extended so that a moving stand that floats from the bridge girder built by the auxiliary lifting means at the time of provisional reception is placed on the bridge girder guided by the guide means around the support means. It is made the structure made to move (Claim 4).
In the case of this claim, the stroke means in the same manner as in claim 1 is arranged upstream of the support means in the construction bridge girder feed direction (rear side in the feed direction), and downstream of the support means in the construction bridge girder feed direction. There is a layout arranged on the side (front side in the feeding direction).
Since the operation is the same as that of the second aspect, the detailed description is omitted.

  The moving table includes a guide portion facing the longitudinal direction of the bridge girder installed at the bottom thereof, and a plurality of movable liners that are engaged with the guide portion and placed on the installed bridge girder, It is possible to ensure an avoidance space having a required length higher than the height of the protrusion protruding upward from the installed bridge girder between the guide portion lower edge between the liners that are arbitrarily brought into contact with the guide portion. It is preferable (Claim 5).

  In the above means, after the supporting stand is lifted from the upper surface of the installed bridge girder by the auxiliary lifting means with the contraction of the supporting means, the moving stand is moved in the feeding direction by using the installing bridge girder as a reaction part. When the moving platform is placed on the installed bridge girder again, if there are protrusions on the upper surface of the installed bridge girder, the moving platform is made unstable and the subsequent delivery of the installed bridge girder is disabled. At that time, move the liner of the moving table to the guide at the time of ascent, and secure an avoidance space more than the length of the projection above the projection, and contract the temporary receiving means in that state By extending the supporting means so as to place the moving platform on the upper surface of the bridge girder, the moving table can be horizontally placed on the upper surface of the bridge girder avoiding the protrusions.

  Further, the support means includes an engaging portion that is slidably engaged with the upper part of the moving table, and a horizontal movement jack provided on the engaging portion, and the width direction of the bridge girder already installed with respect to the engaging portion. The horizontal movement jack is provided with a support function portion that can be adjusted in the amount of vertical expansion and contraction, and the horizontal movement jack is provided with the cylinder in the engagement portion, and an oil chamber is formed by sandwiching the piston in the cylinder. At the same time, a piston rod that protrudes to the left and right is attached to the support function part, and the bridge girder is installed on one side in the width direction of the installed bridge girder and the oil is supplied to the other oil chamber. It is optimal that the bridge girder for installation is horizontally movable on the other side in the width direction of the bridge girder that has already been installed (Claim 6).

  In this means, the erection bridge girder can be moved horizontally in both the left and right directions in the width direction to impart straightness.

Since the present invention is configured as described above, it has the following advantages.
(Claim 1)
When receiving a heavy article at the fed-out part with the temporary receiving means contracted, the stroke means is extended or shrunk to make the heavy-weight support means the upper part of the moving platform that is placed on the sent-out part as a slide guide surface. When a heavy object is temporarily received by the sending and temporary receiving means, the moving table is lifted upward from the sent part, the stroke means is contracted or extended, and the moving table is moved in the sending direction (forward) ) To make the relative relationship the same as the relative relationship between the moving table and the supporting means before sending out, and the heavy objects are sent out through the supporting means at the upper part of the moving table, and the moving table is sent in the feeding direction. This is a method of feeding heavy objects, which alternately repeats the movement (advance) of the rail, so rails and H steel are laid parallel to the two rails on the fed part (for example, the upper surface of the installed bridge girder). H steel It is not necessary to carry, install, or remove dozens of pieces of H steel or rails as in the prior art, which is used to send out heavy objects (for example, bridge girder for construction). It is only necessary to remove the temporary receiving means, the supporting means, the moving stand, and the auxiliary lifting means, and the series of workability from transportation, installation and removal can be greatly reduced.
(Claims 2 and 4) Moreover, since the guide means is provided with both side edges of the installed bridge girder as guides, the trueness of the installed bridge girder is true even when the built-up bridge girder is fed and run on the heavy bridge girder. The top can be sent out safely.
(Claim 5) In addition, the moving platform has a guide portion facing the longitudinal direction of the upper surface of the bridge girder already installed at the bottom, and a plurality of movable pieces that are engaged with the guide portion and placed on the installed bridge girder. Liner, and it is possible to secure an avoidance space with a required length higher than the height of the protrusion on the bridge girder upper surface between the guide part lower edge between the liners arbitrarily moved to the guide part. By avoiding the protrusions remaining on each piece and avoiding it, the moving platform is placed horizontally on the upper surface of the bridge girder, and the upper portion of the moving platform is used as a slide guide surface to support the bridge bridge girder. It can be sent out in the longitudinal direction of the installed bridge girder.
(Claim 6) In addition, the support means comprises a horizontal movement jack for moving the support function part capable of adjusting the amount of vertical expansion and contraction in the horizontal direction, and the horizontal bridge jack is used to extend the bridge girder in the width direction of the bridge girder that has been installed. Since the amount of horizontal movement can be adjusted, the bridge girder for construction can be sent out on the bridge girder that has already been constructed.

  Next, an embodiment of the method for delivering a heavy article and the delivery apparatus of the present invention will be described with reference to FIGS. 1 to 7. In this embodiment, a bridge girder for construction (heavy article (long The feeding method of the scale weight)) will be described based on the feeding device. Reference numeral A is the delivery device, B is the propelling force applying means, C is the delivery section (hereinafter referred to as a built-up bridge girder), and D is a heavy object (hereinafter referred to as a construction bridge girder).

  As shown in FIGS. 1 and 2, etc., the feeding device A includes a temporary receiving means 1 provided on each of the lower flanges d1 on the distal ends of the left and right main girders d of a bridge girder (plate girder) D, and the temporary receiving means 1 And a main receiving means 2 provided corresponding to each lower flange d1 closer to the leading end of the main beam d.

  The temporary receiving means 1 is a backward-acting hydraulic jack, and extends to abut against the upper flange c1 of the main girder c in the installed bridge girder C so that the installed bridge girder D is temporarily received by the installed bridge girder C. It has become.

On the other hand, as shown in FIG. 2, the main receiving means 2 includes a moving base 12, a supporting means 22 for a bridge girder D, an auxiliary lifting means 32, a guide means 42, a stroke means 52, a horizontal moving jack 62, and the like. ing.
In this embodiment, a case is shown in which the stroke means 52 is disposed upstream of the support means 22 in the erection bridge girder D in the delivery direction (rearward in the delivery direction).

  The moving table 12 is a block body having a length of about 2 m with the upper surface and the lower surface as a horizontal plane, and is placed on the upper surface of the main girder upper flange c1 of the bridge girder C that is installed in the longitudinal direction. The lifting force receiving portions 12a and 12a of the auxiliary lifting means 32 and 32 protrude from the front surface (front surface in the feeding direction) and the rear surface (rear surface in the feeding direction), and L-shaped on both vertical edges of the front and rear surfaces. A pair of left and right L-shaped pieces 12b and 12b form a guide portion 12c by providing pieces 12b and 12b, and a plurality of liners 3 are movably provided on the lower surface in the longitudinal direction (FIG. 2, FIG. (See FIG. 4).

  As shown in FIG. 3, the support means 22 for the erection bridge girder D includes an engagement portion 22a that engages with the upper surface of the moving base 12, and a width direction of the erection bridge girder C that is erected with respect to the engagement portion 22a. And a support function part 22b provided so as to be movable.

  As shown in FIG. 3, the engaging portion 22a is integrally provided with engaging bodies 22a-1 and 22a-1 slidably in contact with the left and right end surfaces of the upper surface 12e of the moving base 12 on both sides. , 22a-1 is guided by the left and right end surfaces of the upper surface 12e of the moving table 12.

As shown in FIG. 3, the support function part 22b includes an upper half part 22b-1 having a mounting base 22b 'to be attached to the lower flange d1 of the main girder d in the bridge girder D, and the upper half part 22b-1. And a lower half portion 22b-2 for guiding a vertically movable means and installing a main receiving jack (single-acting hydraulic jack) 22 'which is a vertically moving means, and contracting the temporary receiving means 1, By extending the book receiving jack 22 ', the moving table 12 is placed on the upper flange c1 of the bridge girder C which has been installed, and is configured to receive the book.
Further, the support function part 22b is movable in the width direction of the bridge girder C that has been installed by the horizontal movement jack 62 with respect to the engagement part 22a.

  This horizontal movement jack 62 is provided with a cylinder 62a integrally with the engaging portion 22a, and oil chambers 62c, 62c are formed in the cylinder 62a with a piston 62b interposed therebetween, and piston rods 62d, 62d protruding left and right are provided in the cylinder 62a. The oil chamber 62c at the time of receiving the bridge girder C for the installation in the bridge girder C which has already been installed by contracting the temporary receiving means 1 by being integrally attached to the lower half part 22b-2 of the support function part 22b and extending the main receiving jack 22 '. The bridge girder D is installed on one side in the width direction of the bridge girder C that has been installed by supplying oil to one side, and the bridge girder D for installation is installed on the other side in the width direction of the bridge girder C by supplying oil to the other side of the oil chamber 62c. The amount of movement can be adjusted.

  As shown in FIG. 4, the auxiliary elevating means 32 is used for traveling on the upper surface of the upper flange c1 of the main girder c in the bridge girder C already installed on the sliding body 32a slidably engaged with the guide portion 12c. A wheel bearing body (supporting portion) 32c of the wheel (reaction force receiving portion) 32b is integrally provided, and an installation portion 32d is formed on the wheel bearing body (supporting portion) 32c in correspondence with the lifting force receiving portion 12a. The piston rod 32e of a hydraulic jack (single-acting type) 32 'installed in the installation portion 32d is connected to the lifting force receiving portion 12a, and the hydraulic pressure is temporarily received when the temporary receiving means 1 is extended. By releasing the hydraulic pressure of the main jack 22 'that extends in parallel with the extension of the jack 32', the bridge bridge girder C is made a reaction force portion via the traveling wheel (reaction force receiving portion) 32b, and the lifting force receiving portion 12a. Apply the lifting force to the movement table 12 Is configured to be floated from the erection already girder C.

  As shown in FIG. 4, the guide means 42 is provided on both ends of the arm 42a which is provided integrally with the axle bearing body (support portion) 32c and crosses over the upper flange c1 of the main girder c in the installed bridge girder C. The urethane roller 42b that rolls on both side edges of the flange c1 is pivotally attached to the main frame of the bridge girder C in which the moving base 12 is installed by the guide action of the urethane roller 42b regardless of whether it is temporarily received or fully received. It is configured to be able to travel on the upper surface of the upper flange c1.

  As shown in FIG. 2, the stroke means 52 is a horizontal jack (reciprocating hydraulic jack). In this embodiment, the piston rod 52a is connected to the engaging portion 22a of the support means 22, and a main body 52 ' Is connected to the upper part of the moving base 12 on the upstream side in the feed direction (the rear side in the feed direction) with respect to the support means 22, and the moving base 12 is extended by extending the piston rod 52a during the main receiving. The support means 22 that supports the bridge girder D for installation by using the frictional force between the bridge girder C and the upper bridge girder C (specifically, the upper flange of the main girder) C as the reaction force, the slide surface (slide guide portion) 12d Can be sent out in the longitudinal direction of the installed bridge girder C for one stroke.

  In addition, the stroke means 52 is caused to contract after the moving base 12 is lifted from the bridge girder C by the auxiliary lifting means 32 with the contraction of the support means 22 at the time of the temporary receiving, and is then contracted. Is moved (advanced) in the longitudinal direction of the installed bridge girder C with the installation bridge girder D as a reaction force portion for one stroke in the longitudinal direction of the installed bridge girder C around the support means 22.

  As shown in FIG. 2 and the like, a plurality of liners 3 are provided so as to be movable in the length direction with the lower surface 12f of the moving table 12 as a guide surface. As shown in FIG. The liner 3, the spacer 5, and the guide plate are formed so as to be slightly wider than the width of the lower surface 12 f of the base 12, and the spacer 5 is interposed between the left and right edges of the guide plate 4 mounted on the lower surface 12 f. 4 are integrally connected to each other so that the lower surface 12f is a guide portion and is movable in the length direction.

  The liner 3 has a thickness that can absorb the height of the protrusion c2 on the upper surface of the bridge girder C that has been installed, and the total length of the plurality of sheets is set to a fraction of the entire length of the lower surface 12f, as described above. After moving the moving base 12 by one stroke in the longitudinal direction of the bridge girder C in the longitudinal direction by the stroke means 52 in the floated state, when the protrusion c2 exists immediately below, the protrusion c2 The required liner 3 is artificially moved so as to form an avoidance space 6 with the lower surface 12f of the moving table 12 as a guide, and the moving table 12 is placed on the upper surface of the upper flange c1 of the bridge girder C that has been installed. Can be placed horizontally.

  It is a hanging metal fitting for the bridge girder component piece that is the projection c2, and remains in the central portion in the width direction of the bridge girder C that has been installed, so that the traveling wheels (reaction force receiving portions) 32b and 32b are parallel wheels, The interval between the parallel wheels 32b and 32b is made larger than the width of the protrusion c2 so as to avoid it.

  In addition, the propulsion force applying means B can be anything, but in this embodiment, a horizontal jack feeding method in which a horizontal jack described in the Design Registration No. 1154330 is extended or a pulling method in which the wire is pulled is used. is doing.

As shown in FIG. 5-a (a), a heavy article delivery method performed by synchronizing the heavy article delivery apparatus A of the present invention and the propulsive force imparting means B configured as described above. The means 1 is contracted, the support means 22 of the bridge girder D for extension is extended, and the moving base 12 is placed on the upper flange c1 of the bridge girder C which has already been erected and is received.
In this state, as shown in FIG. 5A (b), the propelling force applying means B is synchronized with the stroke means 52 to extend the support means 22 for the erection bridge girder D, and the moving base 12 and the erected bridge girder C. Then, the upper surface of the moving table 12 is slid by using the reaction force as a reaction force, and sent out by one stroke downstream in the longitudinal direction of the installed bridge girder C.

Next, as shown in FIG. 5-a (c), the temporary receiving means 1 is extended to be temporarily received by the bridge girder C which has already been installed, and then the supporting base 22 is contracted by the auxiliary lifting means 32 with the contraction of the support means 22. Ascend 12 from the bridge girder C.
The levitation is up to a height slightly higher than the height of the protrusion c2.

Then, by contracting the stroke means 52, as shown in FIG. 5B (d), the moving base 12 is erected with the erection bridge girder D as a reaction force portion while being engaged with the support means 22. The traveling wheels (reaction force receiving portions) 32b and 32b roll and move in the longitudinal direction on the upper surface of the installed bridge girder C by one stroke of the stroke means 52 downstream in the longitudinal direction of the completed bridge girder C.
At this time, since the urethane roller 42b of the guide means 42 rolls to the side edge of the main girder upper flange c1 of the bridge girder C that has been installed, the moving table 12 can be moved in the delivery direction following the bridge girder C that has been installed. .

  Subsequently, as shown in FIG. 5B (f), the temporary receiving means 1 is contracted and the supporting means 22 of the bridge bridge girder C is extended to release the auxiliary lifting means 32 (the hydraulic jack 32 'is contracted). Then, the moving table 12 is again placed on the upper flange c1 of the bridge girder C which has been installed, and is received.

  Then, the bridge girder C which has been installed is repeated by repeating FIG. 5-a (a), FIG. 5-a (b), FIG. 5-a (c), FIG. 5-b (d), and FIG. 5-b (f). The bridge girder D for construction is sent out above.

  When the protrusion c2 remains on the upper surface of the bridge girder C already installed as described above, and the moving table 12 cannot be placed horizontally on the upper surface of the bridge girder C already installed, the above-described FIG. In the state of (d), the liner 3 is moved in the front-rear direction or brought into a state where an avoidance space 6 for avoiding the protrusion c2 is formed (FIGS. 5-b (e) and 5- b (f)).

  In addition, when the straightness of the erection bridge girder D is poor, the horizontal moving jack 62 is operated to move the erection bridge girder D in the direction of correcting the right and left of the erected bridge girder C in the width direction. Can be executed.

  Incidentally, after the construction bridge girder D is sent out on the installed bridge girder C, as shown in FIG. 6, the construction bridge girder D is fed in parallel by a parallel feeding device called a pre-sampling device 7, and the like for down line etc. It is used as a bridge girder, but as a pre-installation device, the rails are placed and fixed between the existing bridge girder peer and the adjacent peer, or a bridge girder and a new bridge girder are installed on the horizontally long peer. The rail 8 is placed and fixed across the position where it is mounted, the bridge girder D is supported by the horizontal feed device, the rail is fixed at the proximal end of the horizontal jack connected to the horizontal feed device, the horizontal jack is extended, the horizontal jack Releasing the fixing of the rail at the base end and the contraction of the horizontal jack in sequence to run a horizontal feeding device that mounts the bridge girder D on the rail and intercept it (JP-A-2000-234411, etc.) Can do.

FIG. 7 shows another embodiment, that is, a case where the stroke means 52 is arranged downstream of the support means 22 in the delivery direction (front side in the delivery direction).
Since the trend of the stroke means 52 is only the reverse of that of the above embodiment, a specific description is omitted.
Common specific components are denoted by the same reference numerals, and description thereof is omitted.

In the embodiment, a method and a delivery device for feeding a heavy object (long heavy object (erection bridge girder)) by synchronizing the propulsive force of the propulsion force imparting unit have been described. Each time a long heavy object is sent out by connecting each bridge girder piece as a component in the assembly yard by welding or the like, it is provided not only at the front part but also at any position such as the middle part and the rear part, and synchronizes them. You may make it send out.
Further, the present invention is not limited to a method for feeding a bridge girder for erection and a delivery device for the erected bridge girder as a part to be delivered, and for example, a heavy article delivery method for delivering a heavy article as a part that is delivered from a factory floor, and It can be used equally as the delivery device.

The present invention is schematically shown in a side view of a state in which a heavy article (erection bridge girder) is being delivered using the heavy article delivery device, with a part cut away and an intermediate omitted. It is an enlarged side view of the delivery device. (3)-(3) sectional view taken on the line of FIG. FIG. 4 is a sectional view taken along line (4)-(4) in FIG. 2. The steps of the method for delivering a heavy article are shown, (a) shows a state in which the temporary receiving means is contracted and the heavy article is received by the main receiving means, and (b) shows the heavy article by extending the stroke means. (C) is a state in which the temporary receiving means is extended to temporarily receive a heavy load by the temporary receiving means, and the moving platform is sent out by the auxiliary lifting means to be lifted from the portion. Indicates. 5-a shows the steps of the heavy object delivery method following FIG. 5-a, (d) shows the state in which the stroke means is contracted and the floating moving table is delivered in the delivery direction, (e) shows the state of (d). The enlarged view of the main part shows a state in which the liner has been moved so as to form an avoidance space that avoids protrusions. (F) is a state in which the auxiliary lifting means (hydraulic jack) is released (contracted) and the supporting means is A state in which the heavy load is actually received by extending and temporarily contracting the temporary receiving means is shown. It is the top view which shows the state which intercepts a heavy article, and shows schematically. In the side view of the delivery apparatus of other embodiment, it expands and shows.

Explanation of symbols

A: Delivery device 2: This receiving means C: Bridge girder already installed (sending part) D: Bridge girder for construction (heavy object)
B: Propulsive force applying means 1: Temporary receiving means 22: Support means 12: Moving table 42: Guide means 32: Auxiliary lifting means 52: Stroke means 12f: Guide portion (lower surface of moving table)
3: liner 6: avoidance space 22a: engaging part 62: horizontal movement jack 62a: cylinder 62d, 62d: piston rod 62c, 62c: oil chamber 22b: support function part 62b: piston c2: projection 12d: slide guide part ( Slide surface) 32b: Reaction force receiving portion (running wheel)
32c: support part

Claims (6)

In the method for delivering heavy objects,
Temporary receiving means that can be extended and contracted in the vertical direction to be temporarily received by a delivery part that is provided on a heavy object and extends and the heavy article is delivered.
A moving table that is placed on the portion that is sent out upstream or downstream of the heavy receiving direction with respect to the temporary receiving means;
A support means for a heavy object that is provided on a heavy object and that can be slidably engaged with the upper part of the moving table in a delivery direction;
A releasable auxiliary lifting means that is connected to the moving table and lifts the moving table from the fed-out part with the fed-out part as a reaction force part,
Stretching means that is arranged on the upstream side or the downstream side in the delivery direction from the supporting means and that can extend and contract to connect the moving table and the supporting means,
Stroke means is extended or shrunk at the time of receiving a heavy article at the delivered part after contracting the temporary receiving means, and the supporting means for heavy goods is caused to have a frictional force between the moving table and the delivered part. A heavy load feeding step of feeding a heavy load by sliding it on the moving table in a reaction force, and contracting the support means when the temporary receiving means is extended and the heavy load is temporarily received at the fed portion. In addition, the stroke means is contracted or extended in a state where the moving table is lifted upward with the portion sent out by the auxiliary lifting means as a reaction force portion, and the moving table is moved in the feeding direction around the support means. A method for delivering a heavy article, characterized by alternately repeating the moving table moving step.   The heavy load is a bridge girder for construction, and the fed-out part is the upper surface of the bridge girder that has been erected. The auxiliary elevating means includes a reaction force receiving portion at a lower end that comes into contact with the upper surface of the installed bridge girder so as to avoid a protrusion projecting upward, and is installed on a support portion of the reaction force receiving unit. Guide means having both side edges of the guide portion as guide portions, and the moving stand in the step of moving the moving stand that is lifted from the bridge girder that has been installed by the auxiliary lifting means is provided by the contraction or extension of the stroke means. 2. The method of feeding heavy objects according to claim 1, wherein the bridge is moved on a bridge girder according to guide means.   3. The delivery of heavy objects according to claim 2, wherein the propelling force applying means is synchronized with the extension or contraction of the stroke means at the time of receiving the bridge bridge girder in the installed bridge girder by contracting the temporary receiving means. Method.   A delivery device for carrying out the heavy material delivery method according to claim 2 or 3, wherein the delivery device sends out a heavy construction bridge girder on the upper surface of the constructed bridge girder and is provided in the construction bridge girder. A temporary receiving means that can extend and contract in the vertical direction to temporarily receive the erected bridge girder with the extended and built-up bridge girder, and a main receiving means to receive the erected bridge girder with the already installed bridge girder when the temporary receiving means contracts. The main receiving means is provided on the upstream side or the downstream side in the delivery direction of the bridge bridge girder with respect to the temporary receiving means, and the main receiving means includes a moving table placed on the bridge bridge girder, Adjusting the vertical expansion / contraction amount provided on the bridge bridge girder so that the lower end of the bridge is slidably engaged in the longitudinal direction of the bridge girder which has been erected, and extended to place the movement pedestal on the bridge girder. Possible support means and the temporary Auxiliary lifting means for releasability to lift the moving platform from the bridge girder with the installed bridge girder as a reaction force part with the contraction of the support means, and both side edges of the built bridge girder are guided A guide means, and a stroke means for connecting the support means and a moving base portion upstream or downstream in the feed direction from the support means, and the auxiliary lifting means is located above the upper surface of the installed bridge girder. A guide means is provided at the lower end of the reaction force receiving portion that contacts the slidable contact while avoiding the protrusion protruding in the guide, and a guide means is provided on the support portion of the reaction force receiving portion so that both side edges of the installed bridge girder are guided portions. The stroke means is extended or contracted, and the support means for supporting the bridge bridge girder with the reaction force of the bridge bridge girder of the movement base when the book is received is supported in the feed direction at the upper part of the movement base. To slide In addition, the stroke means is contracted or extended, and a moving platform that floats from the bridge girder built by the auxiliary lifting means when temporarily received is moved on the bridge girder guided by the guide means around the support means. A heavy-duty feeding device characterized in that the heavy-duty feeding device is provided. The moving table includes a guide portion facing a longitudinal direction of the bridge girder already installed on the bottom portion thereof, and a plurality of movable liners that are engaged with the guide portion and placed on the bridge girder installed. It is possible to secure an avoidance space with a required length higher than the height of the projection protruding upward from the bridge bridge girder between the guide section lower edge between the liners that are arbitrarily moved by engaging the section. The heavy-duty feeding device according to claim 4, wherein: The support means includes an engaging portion that is slidably engaged with the upper part of the moving table, and a horizontal movement jack provided on the engaging portion, and is horizontally connected to the engaging portion in the width direction of the installed bridge girder. The horizontal movement jack is provided with a cylinder in the engagement portion, and an oil chamber is formed by sandwiching a piston in the cylinder. A piston rod that protrudes to the left and right is attached to the support function part, and has been installed by supplying oil to one side of the oil chamber, and a bridge girder for installation is installed on one side in the width direction of the bridge girder, and has been installed by supplying oil to the other side of the oil chamber 6. The heavy article feeding device according to claim 4, wherein the bridge girder for installation is horizontally movable on the other side in the width direction of the bridge girder.

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