JP3700950B2 - Support - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support work for supporting blocks such as bridge girders and large trusses when, for example, heavy objects such as bridge girders and large trusses are erected in bridge works, various buildings, and civil engineering works.
[0002]
[Prior art]
In general, when a bridge girder is installed on a pier in bridge construction, a bridge girder block manufactured in advance in an arbitrary size at the factory is transported to the construction site, and then this block is suspended on a support while being suspended by a crane. After the block temporarily received on the support is joined to another block, the block is installed on the pier. On the other hand, after the bridge girder is installed on the pier, the support work is dismantled or removed.
[0003]
Therefore, the work efficiency for assembling and dismantling the support work at the construction site is poor, and the cost is low in terms of work costs. Therefore, for example, Japanese Utility Model Laid-Open No. 7-8416 proposes a foldable support structure, which can be folded compactly during transportation, expanded into a cubic shape when used on site, without being assembled and disassembled one by one. Can be diverted at each site.
[0004]
As shown in FIG. 8, the support disclosed in the above publication includes a pair of opposing fixed frames 71, 71 and a pair of foldable reinforcing frames 72, 72 pivotally supported at the left and right ends of each fixed frame. And a floor plate having a base end pivotally attached to the inner middle of the fixed frames 71, 71.
[0005]
In this case, the reinforcing frame 72 includes a foldable handrail column 74 pivotally attached between the upper ends of the columns 73 constituting the fixed frame 71, and a foldable horizontal member 75 pivotally attached between the columns 73 and 73. The braces 76 and 76 pivotally mounted between the upper ends of the columns 73 and 73 and the horizontal member 75, and the vertical members 77 installed between the handrail column 74 and the horizontal member 75. As shown in the figure, it is expanded in a cubic shape, but when not in use, for example, during transportation, the lower ends of the braces 76, 76 are removed from the horizontal member 75, and the reinforcing frame 72 is folded when compressed by its own weight from the front-rear direction. The whole is compact.
[0006]
[Problems to be solved by the invention]
However, in the above conventional support work, in view of the fact that the reinforcing frame 72 is a folded structure and that there are only two braces 76 and no reinforcing material exists below the horizontal member 75, the arrows A and B The load from the vertical direction and the horizontal direction shown is durable due to the presence of the fixed frame 71, and there is no fear of deformation due to strength, but the load from the front-rear direction indicated by the arrow C due to vibration or the like Is weak and may be deformed in the compression direction.
[0007]
Furthermore, when folding in a compact manner, the troublesome work of removing the lower end of the brace 76 from the pivot point of the horizontal member 75 is necessary, and there is a problem that the working efficiency is remarkably lowered.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide a support that is durable not only in the longitudinal and lateral directions but also in the longitudinal direction and can be folded up almost automatically without any extra work. It is.
[0009]
[Means for Solving the Problems]
To achieve the above object, the means of the present invention includes a pair of left and right front struts, a pair of left and right rear struts, a fixed brace constructed between the left front and rear struts, and between the right front and rear struts. Fixed braces installed on the left and right, a pair of front and rear braces that are installed between the left and right front struts and between the left and right rear struts and cross in an X shape, and four corners are pivotally attached to each front and rear strut A floor plate that can be folded in the middle, a pair of front and rear reeds that can be folded between the left and right front struts and the left and right rear struts, and the center of the front and rear reeds and the front center of the floor plate A pair of front and rear vertical scissors pivoted between the rear center and the rear center, and two sets of the brace, floor board, reed and vertical scissors are provided facing each other vertically, Provide a guide rail corresponding to the above breath, The other end of each brace with the base end pivotally attached to the left front and rear struts is detachably coupled to the opposite right guide rail, and the other end of each brace with the base end pivotally attached to the right front and rear struts is connected to the left guide rail. Further, the above-mentioned breaths are further detachably coupled to the floor plate and the pivoted portion of the vertical rod.
[0010]
The support according to the invention of claim 2 includes a groove for allowing the guide rail to be inserted movably at one end of the brace and a pin insertion locking hole for fixing the guide rail to an arbitrary position in the groove. It is a thing.
[0011]
The support work according to the invention of claim 3 is such that each of the braces is pivotally supported by a pin at the intersection.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
The support structure of the present invention includes a pair of left and right front struts 1 and 2, a pair of left and right rear struts 3 and 4, fixed braces 22 and 23 laid between the left front and rear struts 1 and 3, and the right side. Fixed braces 22 and 23 installed between the front and rear columns 2 and 4, and a pair of left and right front columns 1 and 2 and a pair of left and right rear columns 3 and 4 are crossed in an X shape. A pair of front and rear braces 8, 9, 15, 16; floor plates 38 and 39 that can be folded at the center while pivoting the four corners of the front struts 1 and 2 and the rear struts 3 and 4; And a pair of front and rear side rails 26 and 27 that can be folded at the center while being installed between the two and the left and right rear columns 3 and 4, respectively, the center of the front and rear side rails 26 and 27, and the front center of the floor plates 38 and 39. A pair of front and rear vertical rods 45, 45 pivotally attached to the rear center are provided. ing.
The braces 8, 9, 15, 16, the floor plates 38, 39, the horizontal rods 26, 27, and the vertical rods 45, 45 are provided in two sets, facing each other up and down. 3 and 4 are provided with guide rails 6 and 7 corresponding to the braces 8, 9, 15 and 16, and the right and left ends of the braces 8 and 16 which are pivotally attached to the left front and rear support columns 1 and 3 are opposed to each other. Removably coupled to the guide rails 7, 7, and the other ends of the braces 9, 15 similarly pivotally attached to the right front and rear struts 2, 4 are removably coupled to the left guide rail 6,
Further, the above-mentioned breaths 8, 9, 15, and 16 are detachably coupled to the floor plates 38 and 39 and the pivots of the vertical rods 45 and 45, respectively.
This will be described in detail below.
FIG. 1 is a perspective view showing the entire support structure of the present invention. In the figure, 1 and 2 are left and right front struts, and 3 and 4 are left and right rear struts arranged to face each other. At these upper and lower ends, a connecting plate 5 serving as a base plate for vertical connection and ground installation is attached.
When folded, the ends of the upper and lower connecting plates 5 come into contact with each other.
[0013]
Reference numerals 6 and 7 denote guide rails attached in the middle of the left and right front struts 1 and 2, and in this embodiment, the guide rails 6 and 7 have two guide grooves a in the vertical direction. , B are provided. Similar guide rails 6 and 7 are attached to the middle of the left and right rear support columns 3 and 4 so as to face each other.
[0014]
8 and 9 are braces in which one end (lower end) is pivotally supported by the support shafts 12 and 13 on the brackets 10 and 11 projecting from the lower ends of the front columns 1 and 2, and the other ends are opposed to each other. In the guide grooves a and b of the guide rails 7 and 6 on the front support columns 2 and 1 on the side to be moved, they are guided and supported movably, and fixed by pins at arbitrary positions.
[0015]
That is, the brackets 10 and 11 that support the lower ends of the breaths 8 and 9 are slightly shifted from each other. As a result, the upper end of the brace 8 is inserted into the groove b of the guide rail 7, while the upper end of the brace 9 is Is inserted in the groove a of the guide rail 6.
[0016]
Each of the braces 8 and 9 intersects between the front struts 1 and 2 and is pivotally supported by a pin 14 at the intersection as shown in FIG. The rear struts 3 and 4 also have the same braces 8 and 9 as those provided on the front struts 1 and 2 between the support shafts 12 and 13 and the guide grooves a and b of the guide rails 7 and 6. It is interposed so as to cross each other in the same manner as described above.
[0017]
Reference numerals 15 and 16 denote braces in which one end (upper end) is pivotally supported on the support shafts 19 and 20 on the brackets 17 and 18 projecting from the upper ends of the front support columns 1 and 2, respectively. The other end is movably guided and supported in the guide grooves a and b of the guide rails 7 and 6 on the front support columns 2 and 1 on the opposite sides, and is fixed by a pin at an arbitrary position as described above. Yes.
[0018]
Accordingly, each of the braces 15 and 16 intersects between the front columns 1 and 2 and is pivotally supported by the pin 21 at the intersection as shown in FIG. In addition, the braces 15 and 16 are constructed by the structure similar to what was provided in such front part pillars 1 and 2 also at the rear part pillars 3 and 4.
[0019]
Further, 22 and 23 are fixed braces arranged so as to cross each other between the left front strut 1 and the rear strut 3 and between the right front strut 2 and the rear strut 4 and fixed at both ends. Reinforcing plates 24 and 25 are fixedly attached to these intersecting portions.
In addition, 50 is a reinforcing rod horizontally fixed similarly.
[0020]
Numerals 26 and 27 are recumbent joints that also serve as handrails, each of which is pivotally supported on the support shafts 28 and 29 of the brackets 17 and 18 on the front struts 1 and 2, respectively. The end is pivotally attached by a pin 30 so as to be foldable. In addition, the recumbent rods 26 and 27 are attached between the rear support columns 3 and 4 in the same manner.
[0021]
31 and 32 are other horizontal shafts each having one end pivotally supported on the support shafts 35 and 36 of the brackets 33 and 34 fixed to the front support columns 1 and 2, and each other end is folded by a pin 37. It is pivotally attached freely. In addition, between the rear struts 3 and 4, exactly the same reeds 26 and 27 are attached.
[0022]
Reference numerals 38 and 39 denote one floor plate having one end pivotally supported by the support shafts 42 and 43 of the brackets 40 and 41 fixed to the front columns 1 and 2 and the rear columns 3 and 4, respectively. Each other end is pivotally attached by a detachable pin 44 which will be described later.
[0023]
Then, another set of these reeds 26, 27, 31, 32 and floor boards 38, 39 are mounted on the lower front struts 1, 2 and rear struts 3, 4 with substantially the same mounting structure. ing.
[0024]
45 is a vertical rod, and the upper end portion, the central portion, and the lower end portion thereof are pivotally supported by the pins 30, 37, and 44, respectively.
[0025]
Numerals 46 and 47 are communication holes, which are rectangular passages, formed in the upper floor plate 39 and the lower floor plate 38. In these communication holes 46 and 47, ladders fixed to the braces 22 and 23, etc. 48 and 49 are provided in the vertical direction in order to enable the movement of the worker to each floor board.
[0026]
Further, in the above, as shown in FIG. 3, holes 38a, 39a, 45a facing each other are formed in the floor plates 38, 39 and the vertical rod 45, and a hollow guide pipe 51 is inserted into these holes. The three are pivotally attached.
[0027]
Further, as shown in FIG. 3, projecting pieces 51 and 52 having small holes 50 are connected to the braces 8, 9 and 15, 16 between the front struts 1 and 2, respectively. The pin 44 is inserted into the guide pipe 51 through 50.
[0028]
The pin 44 has a certain length, and is rotated around the pin 44b in a long hole 44a formed penetrating near the tip, and both ends project outside the outer periphery of the pin 44. A retaining key 44c is provided.
[0029]
Therefore, the rotation of the key 44c prevents the pin 44 from coming off from the guide pipe 51 in each of the connection holes 45a, 38a, 39a, and the key 44c is tilted so as to be accommodated in the long hole 44a. Thus, the removal of the pin 44 is facilitated.
[0030]
FIGS. 4 and 5 are perspective views showing the guide structures of the braces 8 and 15 with respect to the guide rail 7 in a partially broken detail. The structure of the guide rail 6 is the same as that of the guide rail 7.
[0031]
In other words, each of the braces 8 and 15 has a square pipe shape, and brackets 57 and 58 having shaft holes 55 and 56 are fitted into the tip portions thereof, respectively. A guide pin 60 with a flange is rotatably inserted into each of the shaft holes 55 and 56.
[0032]
That is, the grooves a and b of the guide rail 7 are formed with ridges c and d at the upper ends, and when the disc-shaped brackets 57 and 58 are fitted, these ridges c and d prevent the disconnection.
[0033]
Further, the guide rail 7 is formed with locking holes 62, 62 penetrating in the lateral direction, and the guide pins 60 inserted from the locking holes 62 are inserted into the shaft holes 55, 56 of the brackets 57, 58, respectively. The braces 8 and 18 are fixed in place.
[0034]
In FIG. 5, the relationship between the guide rail 6 and each of the braces 9 and 16 is shown in a cross-sectional view. Other structures, operations, and effects are the same as those of the guide rail 7.
[0035]
In addition, the support as shown in FIG. 1 can be used alone, but by stacking a plurality of these via the connecting plate 5, it is possible to cope with any height, for example, the height of a bridge girder. It is.
[0036]
The supporting structure having such a configuration is supported in the left-right direction and the up-down direction by the braces 8 and 9 and the braces 15 and 16 in which the front struts 1 and 2 and the rear struts 3 and 4 cross each other over the entire length. At this time, the braces 8, 9 and 15, 16 are fixed to the guide rails 6 and 7 by the pins 60, respectively.
[0037]
A pin 44 inserted into the projecting pieces 51 and 52 as shown in FIG. 3 at the intersection of each of the braces 8, 9 and 15, 16 is inserted into the end of the vertical hook 45 and the bent portions of the floor plates 38 and 39. And is prevented from being removed by the key 44c of the pin 44.
[0038]
For this reason, the guide pins 59, 60 at the ends of each brace 8, 9, and 15, 16 cannot move along the respective guide rails 6, 7, and therefore the front struts 1, 2, and Even if loads in the vertical direction and the horizontal direction act on the rear columns 3 and 4, they continue to maintain a constant interval without being deformed.
[0039]
Even if the front and rear struts 1 and 3, the front struts 2 and the rear struts 4 are subjected to a load in the front-rear direction, The intervals between the struts 1, 3 and 2, 4 are kept constant over the entire length and do not deform.
[0040]
Therefore, when such a support is folded and transported or stored, the columns 1 and 3 are locked to the ends of the crane wires and lifted so that they are gradually floated on the ground and tilted sideways or diagonally. Then, it is lowered again to the ground as shown in FIG.
[0041]
Subsequently, the pin 44 shown in FIG. 3 is extracted from the guide pipe 51 and the small holes 50 of the breaths 8, 9, 15 and 16 by the storing operation into the long hole 44a of the key 44c.
[0042]
Next, the guide pins 60 are extracted from the guide rails 6 and 7 to allow the braces 8, 9, 15, and 16 to slide.
[0043]
By doing so, it is possible to make it freely movable in the grooves a and b of the brackets 55 and 56 at the ends of the braces 8 and 9 and 15 and 16 ends.
[0044]
Accordingly, when the lifting force of the crane wire is gradually loosened, the brackets 55 and 56 move while sliding in the grooves a and b, so that the inclinations of the braces 8, 9 and 15, 16 gradually become gentle. , Fall down.
[0045]
Accordingly, the vertical rods 45 are displaced in the horizontal direction as shown in FIG. 2 in response to the tilting operation force of the braces 8, 9, so that the floor plates 38, 39, the horizontal rods 31, 2 and the pins 37 and 30 are bent as shown by a two-dot chain line in FIG. 2, and they overlap each other as shown in FIG. And it collapses so that it may be folded, receiving the weight of the back support | pillar 3 side.
[0046]
Thus, when these are completely crushed, the shape and size as shown in FIG. 7 are obtained as a whole of the support work, and the occupied space is greatly reduced.
[0047]
Such support works are assembled and shipped at the factory in the state shown in FIG. 7, and transported to the work site by truck.
[0048]
On the other hand, when assembling this at the work site, the cranes are hung on the front strut 1 and the rear strut 3 in the state shown in FIG. The pillars 2 and 4 are gradually separated.
[0049]
In this way, the braces 8, 9 ends and the brackets 55, 56 at the ends of the braces 8, 16 can travel along the grooves a, b of the guide rails 6, 7. Along with this, the vertical rod 45 also moves horizontally, and the floor plates 38 and 39 and the horizontal rods 31, 32, 26 and 27 rise from the state shown in FIG. 6 to the state shown in FIG. Thereafter, the pin 44 is mounted in the small hole 50 and the guide pipe 51.
[0050]
Then, as described above, the support in the state shown in FIG. 2 is gradually raised by the crane as shown in FIG.
[0051]
【The invention's effect】
According to the invention of each claim, a pair of left and right front struts, a pair of left and right rear struts, a fixed brace erected between the left front part and the rear strut, and a fixing erected between the right front part and the rear strut A pair of front and rear braces that are installed between the pair of left and right front struts and between the left and right rear struts and crossed in an X shape, and the front and rear struts are pivoted at the four corners. A foldable floorboard, a pair of front and rear reeds that can be folded between the left and right front struts and between the left and right rear struts, and the center of the front and rear reeds, the front center and the rear center of the floorboard A pair of front and rear vertical rods pivoted between the two, and two pairs of the brace, floor board, horizontal rod, and vertical rod are provided facing each other up and down, and each brace corresponds to the brace Guide rails that are The other end of each brace with the end pivotally attached is detachably coupled to the opposite right guide rail, and the other end of each brace with the base end pivotally attached to the right front and rear support columns is detachably coupled to the left guide rail. In addition, since each of the above braces is detachably coupled to the floor plate and the pivoting portion of the vertical rod, it is possible to maintain sufficient strength against loads from the front and rear as well as the vertical and horizontal directions, In addition, folding can be performed quickly and substantially automatically without extra work, and the occupation section can be narrowed during transportation and storage.
[0052]
According to the invention of claim 2, since the guide rail includes a groove and a locking hole, each brace end can be guided smoothly and reliably in the guide rail, and the folding work and assembly of the support work can be performed. The effect that work can be streamlined is obtained. .
[0053]
Furthermore, according to the invention of claim 3, since each of the above braces is configured to be pivotally supported by a pin at the crossing portion, the amount of movement of each brace end in the guide rail can be equalized. The effect that the displacement in the folding direction can be lightened and reliably obtained is obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a support work according to an embodiment of the present invention.
FIG. 2 is a front view of a state in which the support work in FIG. 1 is laid down sideways;
FIG. 3 is an exploded perspective view of the main part showing the pivotal support structure of the brace, vertical rod and floor board in FIG. 1;
4 is an exploded perspective view of a main part showing a guide structure in a guide rail at a breath end in FIG. 1. FIG.
5 is an exploded perspective view of a main part showing a guide structure in a guide rail at a breath end in FIG. 1. FIG.
6 is a perspective view of a main part showing a folding structure in the vicinity of the guide rail of the support in FIG. 1. FIG.
7 is a front view showing a folded state of the support work in FIG. 1. FIG.
FIG. 8 is a conceptual diagram showing a conventional support work.
[Explanation of symbols]
1, 2 Front struts 3, 4 Rear struts 6, 7 Guide rails 8, 9, 15, 16 Breaths 22, 23 Fixed braces 26, 27, 31, 32 Horizontal ridges 38, 39 Floor boards 45 Vertical ridges

Claims (3)

A pair of left and right front struts 1 and 2, a pair of left and right rear struts 3 and 4, fixed braces 22 and 23 laid between the left front and rear struts 1 and 3, and the right front and rear struts 2 and 2 The fixed braces 22 and 23 erected between the four, the pair of left and right front struts 1 and 2, and the pair of left and right rear struts 3 and 4, respectively. X A pair of front and rear braces 8, 9, 15, 16 that cross in a letter shape, floor plates 38, 39 that can be folded in the middle while pivoting four corners to each of the front struts 1, 2, and rear struts 3, 4, A pair of front and rear side rails 26 and 27 that can be folded between the front columns 1 and 2 and between the left and right rear columns 3 and 4, respectively, and the center of the front and rear side beams 26 and 27 and the floor plate 38, 39, a pair of front and rear vertical rods 45, 45 pivoted between the front center and the rear center, respectively, and the braces 8, 9, 15, 16; floor plates 38, 39; And two sets of vertical rods 45, 45 facing each other up and down, and guide rails 6, 7 corresponding to the braces 8, 9, 15, 16 are provided on the respective struts 1, 2, 3, 4; Opposite the other ends of each brace 8 and 16 pivotally attached to the left and right support columns 1 and 3 The other end of each brace 9, 15 pivotally attached to the right front and rear struts 2, 4 is detachably connected to the left guide rail 6, The braces 8, 9, 15, 16 are detachably coupled to the floor plates 38, 39 and the pivots of the vertical rods 45, 45, respectively. The guide rails 7 and 7 have grooves a and b in which the other ends of the braces 8, 9, 15 and 16 are movably inserted , and pin insertion locking holes in which the guide rails 7 and 7 are fixed at arbitrary positions in the grooves a and b. The support structure according to claim 1, comprising 62 and 62. The support according to claim 1 or 2, wherein the brace 8, 9, 15, 16 is pivotally supported by a pin at an intersection.

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