JPH09195530A - Support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily fold supports, by pivotting extensible bracings in the front supports and the rear supports and also pivotting collapsible first and second floor members through hinges at the front supports and the rear supports. SOLUTION: When folding supports, the wire ends of a crane are fixed to the fixing holes of flange plates 1c-4c to hoist the supports. Then, pins of extensible bracings 18-19 are removed and smaller diameter pipes B are inserted in larger diameter pipes B to shorten the fracings 18, 19. Then, bolts 48 are pulled out and the first and second floor members 37, 39 are folded around the hinges 41. And when wires are loosened, the smaller diameter pipes B slide in the larger diameter pipes A of the bracings 18, 19 by the own weight of the front supports and the rear supports 1, 3 and the supports 1, 3 move down and the floor members 37, 39 are bent around the hinges 41. And further, when the wires are sufficiently loosened, the bracings 18, 19 and the floor members 37, 39 are folded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support work for supporting blocks of bridge girders, large trusses, etc. in the case of constructing heavy objects such as bridge girders, large trusses, etc. in bridge construction, various constructions, and civil engineering works. Regarding

[0002]

2. Description of the Related Art Generally, when a bridge girder is installed on a pier in a bridge construction, a bridge girder block manufactured in advance to an arbitrary size at a factory is transported to an erection site, and then the block is suspended by a crane for supporting work. It will be installed on the pier after it is received above and the block temporarily received during this support work is joined to other blocks. On the other hand, after the bridge girders are installed on the piers, the supporting works are dismantled or removed.

However, the work efficiency for assembling and disassembling the support work at the construction site is poor, and the economy is inferior in terms of work cost and the like. For this reason, for example, Japanese Unexamined Utility Model Publication No. 7-8416 proposes a foldable support work, which can be folded compactly during transportation and expanded into a cube when used in the field, without assembling and disassembling one by one. Can be diverted to each site.

The supporting work disclosed in the above publication, as shown in FIG. 8, includes a pair of opposing fixed frames 71, 71.
A pair of foldable reinforcement frames 72, 72 pivotally supported at the left and right ends of each fixed frame, and the fixed frame 7.
It is composed of a floor plate whose base end is rotatably pivoted in the middle of the inside of 1,71.

In this case, the reinforcing frame 72 includes a foldable handrail support post 74 pivotally mounted between the upper ends of the support posts 73 constituting the fixed frame 71 and a foldable horizontal support pivotally mounted between the support posts 73, 73. Material 75 and columns 73, 73
Breaths 76, 7 pivotally attached between the upper end of the
6 and a vertical member 77 installed in the middle of each of the handrail support 74 and the horizontal member 75, and they are expanded in a cubic shape as shown in the figure during use, but when not in use, for example, during transportation. Inside, the lower ends of the brace 76, 76 are removed from the horizontal member 75, and the reinforcing frame 7 is compressed by its own weight from the front-rear direction.
2 is folded, and the whole is compact.

[0006]

However, in the conventional supporting work described above, the reinforcing frame 72 has a folding structure, and there are only two braces 76 on the upper side, and there is no reinforcing member below the horizontal member 75. In view of this, arrows A and B
With respect to the load from the vertical direction and the left-right direction, which is durable by the presence of the fixed frame 71, and is strong and is not deformed, the load from the front-back direction indicated by the arrow C due to vibration or the like. However, it may be deformed in the compression direction in some cases.

Therefore, an object of the present invention is to provide a supporting structure which is durable not only in the longitudinal and lateral directions but also in the longitudinal direction and which can be folded very easily without extra work. It is to be.

[0008]

In order to achieve the above-mentioned object, a supporting structure according to the present invention comprises two front columns and two rear columns arranged opposite to each other, and one front of each of the above. One end is pivotally supported on each of the part support and each one of the rear support, intersects in the vicinity of the central part, and an expandable brace detachably supported on the front support and the rear support on the side where the other ends face each other, An extension lock member provided on the expansion brace to enable locking and unlocking of the extension state of the extension brace, and the extension lock member horizontally disposed between the front struts and between the rear struts. And a horizontal rod removably supported at both ends thereof, and one end side of the first floor member is pivotally supported to one of the front strut and one of the rear strut, respectively, and the other side of the front strut is One end of the second floor member is pivoted to the other of the rear strut and Then, the other end side of the first floor member and the other end side of the second floor member are connected by a hinge member, and by removing the connecting member between the first floor member and the second floor member. A connecting plate is installed so that each of the floor members can be bent via the hinge member.

In this case, a bracket is provided on one side of the expandable brace that intersects in the vicinity of the central portion, and the bracket and the connecting plate are detachably fixedly supported by a fixed support member.

Similarly, it is preferable that the expandable brace is composed of an outer tube and an inner tube that is inserted in and out of the outer tube.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall perspective view showing the basic form of the support work of the present invention, and FIG. FIG. 3 is also a side view, and in each figure, 1 and 2 are
The left and right front struts, 3 and 4 are left and right rear struts facing each other, and each is made of a tubular steel material.

The front columns 1 and 2 and the rear columns are connected to the lower ends of the connecting rods 1a and 2 having a diameter smaller than these.
a, 3a, 4a are projectingly provided, and flange plates 1c, 2 having connecting holes 1b, 2b, 3b, 4b having a diameter slightly larger than the outer diameters of these connecting rods 1a, 2a, 3a, 4a at the upper end portion.
c, 3c, 4c are attached.

Further, the flange plates 1c, 2c, 3
For each of c and 4c, as shown in FIG. 4 as a representative of the flange plate 2c, a plurality (8 in this figure) are formed on the same circumference.
Individual mounting holes 5 are provided.

Reference numerals 6 and 7 denote mounting brackets mounted on the flange plates 1c and 2c of the front columns 1 and 2, respectively.
As representatively shown in, the mounting bracket 7 is composed of a U-shaped portion 8 sandwiching the flange plate 2c from the upper and lower surfaces, and a vertical mounting piece 9 connected to the U-shaped portion 8.

The two pieces 8 forming the U-shaped portion 8 are formed.
Connection holes 10 are formed in a and 8b, and the connection holes 10 and the plurality of mounting holes 5 in the flange plate 2c are formed.
Among them, the bolt 11 is inserted into the mounting hole 5 on the side of the front support column 1 facing the flange plate 1c, and the bolt 11
The mounting bracket 7 is detachably fixed to the flange plate 2c by tightening the nut 12 at the end.

Further, the vertical mounting piece 9 has a vertical 3
Individual mounting holes 13, 14, 15 are formed. In addition,
The mounting bracket 6 having the same structure as the mounting bracket 7 is also symmetrically arranged on the flange plate 1c on the front support 1. Further, brackets 6 and 7 equivalent to these are also symmetrically arranged on the flange plates 3c and 4c on the rear columns 3 and 4, respectively.

Further, in FIG. 1 and FIG.
Reference numeral 7 is a lower mounting piece that is provided so as to protrude from the lower portions of the front columns 1 and 2 so as to face each other.
One end of each of the expandable breaths 18 and 19 has a pin 2 on the pins 6 and 17.
It is pivoted at 0,21.

Further, the expansion and contraction breaths 18 and 19 are crossed with each other in the vicinity of the central portion, and the other ends thereof are bolts 22a and 23a and nuts 22b and 23b as shown in FIG.
Is pivotally supported in each mounting hole 15 of each bracket 7, 6.

Incidentally, each of these expansion and contraction breaths 18, 19
Consists of a large-diameter pipe portion A in which a small-diameter pipe portion B is freely inserted / removed, and when these are extended to the most extended position, FIG.
As shown in FIG. 5, a pin 26 as an extension lock member can be fitted into each of the pin holes 24 penetrating them, and the pin 26 cannot be contracted by the fitting of the pin.

As shown in FIG. 5, the pin 26 has a retaining key 28 for retaining the pin hole 24 by rotating 90 degrees about the shaft 27 at the tip. Reference numeral 29 denotes a bracket projecting from the outer circumference of the large-diameter pipe portion A of one of the expandable breaths 18 and 19 intersecting in the vicinity of the central portion. The bracket 29 is provided on a floor member described later. The bolt is inserted together with the mounting hole on the connecting plate,
A bracket hole 30 that is fastened with a nut is provided.

Then, a lower mounting piece 1 having the same construction as described above.
6, 17 and expansion and contraction breaths 18, 19 are similarly erected between the left and right rear columns 3, 4 and between them.

Further, the mounting brackets 6 and 7 of the two front columns 1 and 2 and the mounting brackets 6 and 6 of the rear columns 3 and 4 are provided.
Both ends of a horizontally arranged horizontal rod 31 are detachably supported by bolts 32 and nuts 33 in a mounting hole 14 shown in FIG.

In FIGS. 1 and 2, 34 and 35 are
A pair of upper and lower reinforcing flanges projecting from the front struts 1 and 2 and the rear struts 3 and 4 at substantially intermediate level positions, and a vertical mounting plate 36 is continuously provided therebetween.

One end side of a first floor member 37 having a rectangular outer shape (rectangle) is pivotally supported by a pin 38 on the vertical mounting plates 36 on the front strut 1 side and the rear strut 3 side, and the front strut 2
One end side of a rectangular second floor member 39 is pivotally supported by a pin 40 on the vertical mounting pieces 36 on the side and the rear support column 4 side. The floor members 37 and 39 are formed in a plate shape or a frame shape.

The other end side of the first floor member 37 and the other end side of the second floor member 39 face each other,
Here, they are flexibly connected by a hinge member 41.

As shown in FIGS. 5 and 6, one end portion of the connecting plate 42 is fixed to the front and rear surfaces of the first floor member 37 by welding or the like, and the floor of the connecting plate 42 is fixed. A communication hole 4 that can communicate with a mounting hole 43 that is formed through the front and rear surfaces of the floor member 39 at a position facing the front and rear surface of the member 39.
4 are provided.

Then, a bolt 45 as a connecting member is passed through each of the mounting holes 43 and the communication hole 44, and the nut 4 is inserted.
By screwing 6 into this, the second floor member 39 can be integrally held with the first floor member 37 in the same plane position.

Numeral 47 is a floor member supporting hole formed in the central portion of each connecting plate 42.
As shown in FIG. 5, bolts 48 as fixed support members are inserted into the bracket holes 30 on the bracket 7 and the bracket 29, and nuts 49 are tightened therein, so that the floor members 37 and 39 expand and contract. The breath 19 can be fixedly supported.

Further, a first floor plate 50 and a second floor plate 51 of the same size are respectively provided on the upper portions of the first floor member 37 and the second floor member 39, as shown in FIGS. 7 and 8. It can be detachably attached.

On the other hand, the mounting holes 5 of the flange plates 1c and 3c provided on the front strut 1 and the rear strut 3 facing each other.
And the mounting holes 5 of the flange plates 2c, 3c provided on the front support column 2 and the rear support column 4 facing each other, respectively, have mounting brackets 52, 53 similar to those shown in FIG.
Are attached as shown in FIG.

Further, lower positions of the front support column 1 and the rear support column 3 facing each other, and the front support column 2 and the rear support column 4 are arranged.
Lower mounting pieces 5 at the lower positions facing each other.
4,55 are projected.

Then, each of these lower mounting pieces 54, 55
One end of each one of the breaths 56 and 57 is supported by a pin 58 and 59, and each of the breaths 56 and 57 intersects with each other in the middle, and the other end thereof is the mounting bracket 53,
52 through the lower mounting hole as shown in FIG.
1, 60 and nuts (not shown) are connected.

Furthermore, the mounting brackets 52 on the left and right,
As shown in FIG. 3, fixed horizontal rods 62 are horizontally arranged between 53, and both ends of these fixed horizontal rods 62 are formed on the mounting brackets 52 and 53, similar to those shown in FIG. The bolts 63, 64 and a nut (not shown) are connected to each other through the above-mentioned middle mounting hole.

In FIGS. 1 and 3, reference numeral 65 is a reinforcing plate which is connected to the intersection of the breaths 56 and 57 to reinforce them.

FIG. 9 shows a structure in which the supporting works shown in FIG. 1 are stacked in two stages. The same components as those shown in FIG. 1 are designated by the same reference numerals, and their duplicate description will be omitted. .

In this two-stage support, the connecting rods 1a, 2a, 3a and 4a of the upper columns 1, 2, 3 and 4 are connected to the flange holes 1b of the lower columns 1, 2, 3 and 4, respectively. , 2b, 3
It is carried out by inserting into the floors b and 4b, and each floor member 7 in the upper and lower two stages.
A ladder 71 is erected between the floor members 70 and the ground between the floor members 70 and the ground to facilitate going up and down between the floor members 70. In addition, here, a fall prevention frame 72 for preventing a work tool or the like from falling is provided upright on the upper surface of each floor member 70 near the four circumferences.

Further, in contrast to the support for the lower stage shown in FIG. 1, in the support for the upper stage, lower mounting pieces 16, 17, 54, 55 are provided at the lower ends of the columns 1, 2, 3, 4. Therefore, the lower end of each upper expansion brace 18, 19 is
Bolts 73 and nuts 74 are connected to the upper mounting holes of the lower mounting brackets 6, 7, 52, 53 as shown in FIG.

The columns 1, 2, 3, 3 of the lower support work
At the lower end of 4, a cylindrical leg 77 with a flange 76 for stably supporting the entire support work on the ground is fitted.

The support work having such a structure is made up of the front support columns 1,
2 and rear struts 3 and 4 intersect each other over their entire lengths, respectively.
By the horizontal rod 31 and the fixed horizontal rod 62, they are supported in the front-rear direction, the left-right direction, and the vertical direction to form a mechanically large rigid body as a whole.

Therefore, when such a supporting work is folded and conveyed or stored, the wire end of a crane (not shown) is locked in the mounting hole 5 or the like of any of the flange plates 1c, 2c, 3c and 4c. , Operate the crane and lift the whole.

Then, when the support work is lifted from the ground to some extent, the entire supporting work is tilted and slanted sideways, and is laid down on the ground again and laid down (see FIG. 10).

Next, while being suspended by this wire, the horizontal rods 31 installed between the mounting brackets 6 and 7 are removed by loosening the bolts 32 and the nuts 33, and then expanded and contracted. The pin 26 of the breath 18, 19 is pulled out from each pin hole 24 by fitting the key 28 within the diameter of the pin 26.

As a result, the small-diameter pipe portion B enters into the large-diameter pipe portion A, and the total length of the expansion and contraction breaths 18, 19 can be shortened.

Further, the bolt 49 inserted into the bracket hole 30 of the bracket 29 and the floor member support hole 47 of the connecting plate 42 shown in FIG.
It is possible to fold the first floor member 37 and the second floor member 39 around the hinge member 41.

Then, when the wire is further loosened, the small-diameter pipe portion B of the expandable brace 18 or 19 is moved into the large-diameter pipe portion A by its own weight of the upper front support column 1 and the rear support column 3. While sliding in, the pillars 1 and 3 descend as shown by the chain double-dashed line in FIG.

At this time, the floor members 37 and 39 are bent around the hinge member 41 by receiving the weight of the columns 1 and 3.

When the wire is further loosened, the expandable breaths 18, 19 and the floor member 37,
As shown in FIG. 11, 39 can be folded between the front strut 1 and the rear strut 3, and the front strut 2 and the rear strut 4 to sufficiently reduce the shape and volume of the entire support work. Becomes As a result, shipping, transportation, and storage are facilitated, and the occupied space on the truck can be sufficiently reduced.

On the other hand, when assembling this at the work site, the wire end of the crane is again locked to the mounting plate 5 of the flange plates 1c, 2c, 3c and 4c and lifted as shown in FIG. In the state shown in (1), the expandable breaths 18 and 19 are maximally extended, and the floor members 37 and 39 are also vertically raised.

Then, in this state, the pins 26 are inserted into the respective pin holes 24 of the large-diameter pipe portion A and the small-diameter pipe portion B to be key-locked, and further, the bracket hole 30 of the bracket 29 and the floor member of the connecting plate 42. Bolts 48 in the support holes 47
By assembling the nut 49 through the nut (see FIG. 5), the support work can be assembled quickly and easily.

Further, in such a support work, in the standing state as described above, the expansion and contraction breaths 18 and 19 and the fixed breathes 57 and 58 cross each other to form the front columns 1, 2 and the rear columns 3, 4 respectively. Since it supports each, it has a simple structure, but it is up and down over the entire length of this support work,
Sufficient strength can be secured against load loads from the left, right, front, and rear directions.

[0051]

As described above, according to the first aspect of the present invention, the two front columns and the two rear columns disposed opposite to each other, the one front column and the one rear column are provided. An extension brace detachably attached to a front column and a rear column on the side where each one end is pivotally supported and intersects in the vicinity of the central part, and the other ends are opposed to each other, and an extension brace provided on the extension brace. An extension lock member that enables locking and unlocking in a set extension state, and a horizontal member horizontally arranged between the front columns and the rear columns and removably supported at both ends thereof. A rod, and one end side of the first floor member is pivotally supported on one of the front strut and one of the rear strut, respectively, and the second floor is on the other of the front strut and the other of the rear strut, respectively. One end side of the member is pivotally supported, and the other end side of the first floor member and The other end side of the second floor member is connected by a hinge member, and each floor member is bent through the hinge member by removing the connecting member between the first floor member and the second floor member. Since the connecting plate that enables it is constructed, it is durable not only to the longitudinal and lateral directions but also to the longitudinal direction, and can be folded very easily without extra work. There is an effect that the work can be obtained at low cost.

According to the second aspect of the present invention, a bracket is provided on one of the expandable brace that intersects near the central portion,
Since the bracket and the bracket are configured to be detachably fixedly supported by the fixed support member, the floor member bent around the hinge member can be firmly and safely horizontally supported by the expansion and contraction breath.

According to the third aspect of the invention, the structure of the expansion breath is simple and the workability and the assembling are improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a basic structure of a supporting work according to an embodiment of the present invention.

FIG. 2 is a front view of the support work in FIG.

FIG. 3 is a left side view of the support work shown in FIG.

4 is an explanatory view showing an enlarged mounting structure of the mounting bracket in FIG. 1. FIG.

5 is an exploded perspective view showing the vicinity of the intersection of the expandable brace shown in FIG.

6 is an exploded perspective view showing the vicinity of the connecting plate in FIG. 1. FIG.

FIG. 7 is a perspective view of an essential part showing a state where a floor board is placed on the floor member in FIG.

8 is a perspective view showing the vicinity of a floor member when the floor plate shown in FIG. 7 is removed.

FIG. 9 is a perspective view showing a structure in which the support work shown in FIG. 1 is stacked in two stages.

FIG. 10 is an explanatory view showing a folding process of the support work shown in FIG. 9.

FIG. 11 is an explanatory diagram showing a folding completed state of the support work shown in FIG. 9;

FIG. 12 is a conceptual diagram showing a conventional supporting work.

[Explanation of symbols]

 1, 2 front pillars 3, 4 rear pillars 18, 19 expansion brace 26 pins (extension lock member) 29 bracket 31 horizontal rod 37 first floor member 39 second floor member 41 hinge member 42 connecting plate 45 bolt (connection) Member) 48 bolts (fixed support member) 56, 57 Fixed breath

Claims (3)

[Claims] 1. Two front struts and two rear struts facing each other, one end of each of the front struts and each of the rear struts being pivotally supported, and intersecting in the vicinity of the central portion. And an extension brace detachably pivotally attached to the front and rear struts on opposite sides of the other ends, and an extension provided on the extension brace to enable locking and unlocking of a set extension state of the extension brace. A lock member, a horizontal rod horizontally disposed between the front struts of each one and between the rear struts of each one, and both ends of which are detachably supported by each of these, and one of the front struts and one of the rear struts of the front struts. A first floor member whose one end is pivotally supported on one side, a second floor member whose one end is pivotally supported on the other of the front strut and the other of the rear strut, and the other of the first floor member. A hinge that connects the end side and the other end side of the second floor member. Supporting work provided with a member and a connecting plate that is installed between the first floor member and the second floor member and that makes it possible to bend each of the floor members via the hinge member by removing the connecting member. . 2. A bracket provided on one side of the expandable brace that intersects in the vicinity of the central portion, and a fixed support member that detachably fixes and supports the connecting plate to the bracket. The support work according to claim 1. 3. The expansion brace includes an outer tube,
The scaffolding according to claim 1, comprising an inner tube that is inserted in and out of the outer tube.