JP4206492B2 - Excavation fence - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the excavation method, the present invention relates to a fence for excavation method provided along both side surfaces of the excavated groove.
[0002]
[Prior art]
Conventionally, in the excavation method, two earth retaining panels are driven or a sheet pile is driven at an interval on the ground surface, and a groove is formed by excavating between them.
[0003]
Various operations are performed in the groove.
[0004]
[Problems to be solved by the invention]
However, since the groove is formed on the ground surface, the work performed at the peripheral portion is performed while paying attention to the groove, so that the concentration is diffused. Moreover, the problem that a pedestrian, especially at night, falls without noticing the groove also occurs.
[0005]
Furthermore, in rainy weather, there is a problem that the work period becomes long because the work in the groove cannot be performed.
[0006]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fence for excavation method that enhances the safety of work around the groove and enables work in rainy weather.
[0007]
[Means for Solving the Problems]
The invention of claim 1 is described with reference numerals used in the embodiments. In the excavation method, a plurality of attachments laid along the both sides of the excavated groove 2 at intervals in the peripheral portion Stand 11;
A plurality of support posts 15 fixed to the upper part of the mounting base 11;
A plurality of cross beams 21 spanned between the columns 15 and connected to the columns 15 via a connector 24;
A net 31 composed of wire rods and attached between the cross beams 21 ;
An oblique beam 45 that is rotatably connected to the upper end of each support column 15 via a rotation lever 41;
It is characterized in that it has a connecting member 47 that is inserted into the opposite end portions of each of the oblique beams 45 and connects the oblique beams 45, and covers the side surface of the groove 2, so that the operator and to Ru can ensure the safety of pedestrians, can be dealt with only by changing the the inclination of the oblique beam 45 when the width of the groove 2 is changed. Further, in the invention of claim 1, when the coupling with the opposing oblique beam 45 is released and the oblique beam 45 is overlapped with the side surface of the support column 15, for example, when operating an excavating machine in the groove 2, Since the upper space of the groove 2 is not obstructed, the work is not hindered.
[0008]
In the invention of claim 2, the net 31 is formed by arranging wires in the form of a lattice in the vertical and horizontal directions and attaching a vertical line 33 to one side surface of the horizontal line 32, and the horizontal line 32 is attached to the side surface portion of the horizontal beam 21. Since it has a feature that it is locked to the protruding protrusion 22 and is fastened together with the cross beam 21 to the support column 15, the attachment of the net 31 is easy, and the side surface of the groove 2 is covered. Safety of workers and pedestrians can be ensured.
[0009]
In the invention of claim 3, since the mounting base 71 is fixed to the lower end portion of the support column 15, the assembly is simple.
[0010]
In the invention of claim 4, an oblique beam 45 is attached to the upper end of the struts 15 facing each other across the groove 2 and extending toward the facing struts 15 and having tip portions coupled to each other by a coupling member 47. are wearing, characterized where the sheet 50 covering the groove 2 on these oblique beam 45 is attached, that Do is possible to work even in the rain.
[0011]
In the invention of claim 5 , the oblique beam 83 is configured to be extendable and retractable, and one end is rotatably attached to the auxiliary column 81 attached to the upper end of one column 15, and the other end is mounted. Since the upper end of the other support column 15 is locked, the width of the groove 2 can be adjusted from the other support column 15 side.
[0012]
In the invention of claim 6 , the cross beam 21 is configured to be bendable and is housed in a lower portion of the cross beam 21 when not in use, and is attached with an electric lamp holding plate 61 that is bent and protrudes outward when in use. And can support an electric lamp for illumination.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
It will be described below with reference to the accompanying drawings per fence 10 of the first embodiment Ru engaged to the onset bright.
[0014]
First, in FIG. 1 and FIG. 2, two earth retaining panels 1 are driven into the ground surface G at intervals, and a groove 2 is formed between these earth retaining panels 1. And when the groove | channel 2 becomes deep to the upper end of the earth retaining panel 1, a new earth retaining panel is added on the conventional earth retaining panel 1, and it is driven into the ground further, and the groove 2 is deeply excavated.
[0015]
Square mounting holes 3 are formed at the upper ends of both ends of the earth retaining panel 1.
[0016]
As shown in FIG. 3A, the mounting base 11 is formed with a fixing portion 13 that is press-fitted into the mounting hole 3 of the retaining panel 1 at the lower portion of the substrate 12, and the fitting cylinder portion 14 projects at the upper portion. It is installed.
[0017]
The mounting base 11 is fixed to the peripheral edge of the groove 2, for example, the earth retaining panel 1. That is, the fixing portion 13 is press-fitted into the mounting hole portion 3, the substrate 12 is in close contact with the upper surface of the earth retaining panel 1, and the column 15 made of a drawing material having a rectangular cylindrical cross section is formed in the fitting tube portion 14. It is mated. The mounting base 11 is firmly fixed by driving a fixing pin 11 a shown in FIG. 3B between the earth retaining panel 1 and the support column 15.
[0018]
The cross beam 21 is formed from a drawn material, has a cross-sectional shape shown in FIG. 4, and is spanned between the two support columns 15. The horizontal beam 21 is provided with two horizontal protrusions 22 on the side surface, and a protrusion 23 higher than the protrusion 22 on the upper and lower surfaces. The protrusion 22 may be a protrusion that protrudes intermittently.
[0019]
The cross beam 21 is fixed to the support column 15 with a screw 24 b via a T-shaped connector 24. In addition, when the distance between the support | pillars 15 is long, the space | interval material 15a is inserted between the cross beams 21 in the middle, and it fixes with the screw 24b via the cross-shaped coupling tool 24a.
[0020]
As shown in FIG. 4, the net 31 is configured by arranging wire rods vertically and horizontally in a lattice pattern and welding a vertical line 33 to one side surface of the horizontal line 32. In the net 31, when the horizontal line 32 is locked to the protrusion 22 of the horizontal beam 21 (see FIG. 5), the vertical line 33 is substantially flush with the protrusion 22.
[0021]
When the connecting tool 24 is attached to the support column 15, the end of the horizontal line 32 is pressed by the connecting tool 24 and is fastened together with the cross beam 21 to the support column 15.
[0022]
As shown in FIG. 6, hooks 25 are attached to a plurality of positions in the middle of the connecting tool 24. As for this hanging tool 25, the center part hold | suppresses the horizontal line 32, both ends are bent in U shape, and it is latched by the protrusion 23. FIG. Thereby, the net 31 is firmly fixed to the support column 15 and the cross beam 21.
[0023]
A rotation lever 41 is attached to the upper end portion of the support column 15. As shown in FIG. 7, the rotating lever 41 includes a first lever 42 and a “<”-shaped second lever 44 pivotally supported by the first lever 42 via a hinge 43. Has been. The first lever 42 is press-fitted and fixed to the support column 15 at the base end portion, and the second lever 44 is positioned in the groove 2. The end of the second lever 44 is fixed to one end of the oblique beam 45.
[0024]
A C-shaped coupling recess 46 is formed at the other end of the oblique beam 45.
[0025]
The oblique beams 45 extending from the pillars 15 on both sides of the groove 2 are opposed to each other at their distal ends, and are coupled to each other when the coupling member 47 is inserted from the side (see FIG. 8). The connecting member 47 connects two cylindrical portions 48 inserted into the connecting recess 46 by a connecting portion 49. A sheet 50 is hung on top of the oblique beam 45 and the coupling member 47 and covers the upper part of the groove 2.
[0026]
Note that the two diagonal beams 45 are connected by a reinforcing beam 51 attached to an intermediate portion.
[0027]
Since the diagonal beam 45 is configured to be rotatable with respect to the support column 15 by the rotation lever 41, when the width of the groove 2 is wide, the diagonal beam 45 is nearly horizontal and the width of the groove 2 is narrow. Can increase the angle of inclination of the oblique beam 45 and have a chevron at the tip, which can accommodate changes in the width of the groove 2.
[0028]
Further, if the coupling member 47 is removed, it overlaps the side surface of the support column 15 as shown in FIG. 2, so that it does not protrude into the groove 2 and its width dimension does not decrease, so that the work using the machine is easy. Can be.
[0029]
Next, the lamp holding plate 61 will be described with reference to FIGS. The lamp holding plate 61 is formed of a material having excellent flexibility such as copper, aluminum, soft steel, and the like so that it can be bent, and the U-shaped locking part 62 sandwiches the horizontal beam 21 with the upper and lower surfaces sandwiched. 23 is locked. An electric lamp holding part 62 having a U-shape is formed continuously from the lower end of the locking part 62, and a notch part 64 for improving flexibility is formed at the lower part of the locking part 62.
[0030]
The lamp holder 62 is housed in the lower part of the cross beam 21 when not in use and does not protrude from the cross beam 21. Then, during nighttime work, it is bent as shown by a two-dot chain line and protrudes to the outside of the cross beam 21, and the electric lamp is held here.
[0031]
In addition, in the said Example, although the case where the groove | channel 2 was formed between the earth retaining panels 1 was demonstrated, the fence 10 of this invention not only this but a sheet pile was driven and the groove | channel 2 was formed among these. It can also be applied to cases. In this case, the mounting base 11 may be laid so as to be driven into the peripheral edge along both side surfaces of the groove 2.
[0032]
FIGS. 11 to 15 show a second embodiment of the present invention . Differences from the first embodiment will be described.
[0033]
As shown in FIGS. 11 and 12, the mounting base 71 according to the third aspect is formed on the substrate 72 by forming a fixing portion 73 to be press-fitted into the mounting hole portion 3 of the retaining panel 1 at the lower portion of the substrate 72. A support plate 74 is projected along the fitting hole 72a.
[0034]
The support column 15 is inserted into the fitting hole 72 a and fixed to the mounting base 71. The mounting base 71 is press-fitted into the mounting hole 3 of the earth retaining panel 1 and is fixed to the peripheral edge of the groove 2.
[0035]
In addition, the coupling | bonding of the support | pillar 15 and the mounting base 71 is not restricted to said structure, For example, you may weld the lower end part of the support | pillar 15 to the board | substrate 72. FIG.
[0036]
In the oblique beam 83 according to the fifth aspect , as shown in FIGS. 13 to 16, the second beam 85 is slidably inserted into the cylindrical first beam 84. Then, the relative positions of the first beam 84 and the second beam 85 are changed and fixed to an appropriate length by a fixing device (not shown).
[0037]
As shown in FIGS. 13 and 14, an auxiliary support column 81 is fixed to the upper end portion of one support column 15 via a fixing piece 81a. A pivot attachment portion 82 is provided at the upper end portion of the auxiliary column 81, and an end portion of the oblique beam 83 is rotatably attached to the pivot attachment portion 82. Further, a U-shaped locking piece 86 is attached to the other end portion of the oblique beam 83.
[0038]
The length of the oblique beam 83 changes according to the width of the groove 2, and the end face of the oblique beam 83 is engaged with the support column 15, and the engagement piece 86 is engaged with the top end of the support column 15. , As shown in FIG.
[0039]
According to the second embodiment, since the length of the oblique beam 83 can be adjusted, the work of attaching to the support column 15 can be performed on one side, and the work can be facilitated in addition to the effects of the first embodiment. There is an effect.
[0040]
【The invention's effect】
The invention of claim 1 is the excavation method, wherein a plurality of mounting bases 11 laid along the both side surfaces of the excavated groove 2 at intervals on the peripheral edge thereof;
A plurality of standoff 15 which is fixed to the upper portions of the mount 17,
A plurality of transverse beams 21 connected to the strut 15 via a hanging passed connector 24 between these standoff 15,
The net 31 is attached to configured transverse Harima from wire,
An oblique beam 45 that is rotatably connected to the upper end of each support column 15 via a rotation lever 41;
Since it is provided with a connecting member 47 that is inserted into the opposing tip of each of the diagonal beams 45 and connects the diagonal beams 45 , the side surfaces of the grooves can be covered, and the safety of workers and pedestrians can be ensured. that to one in which the effect called only accommodate changing the inclination of the oblique beam 45 when the width of the groove 2 is changed.
[0041]
Further, in the invention of claim 1, when the coupling with the opposing oblique beam 45 is released and the oblique beam 45 is overlapped with the side surface of the support column 15, for example, when operating an excavating machine in the groove 2, Since the upper space of the groove 2 is not obstructed, the work is not hindered.
[0042]
According to a second aspect of the present invention, in the net, the wires are arranged in a lattice form in the vertical and horizontal directions, and the vertical lines are attached to one side surface of the horizontal line, and the horizontal line is a protrusion protruding from the side surface portion of the horizontal beam. Since it is locked and fastened together with the cross beam to the support column, the net can be easily attached and the side surface of the groove is covered, so that the safety of workers and pedestrians can be ensured.
[0043]
In the invention of claim 3, since the mounting base is fixed to the lower end portion of the support column, the assembly work of the support column becomes easy.
[0044]
The invention of claim 4 is attached to the upper end of the struts facing each other across the groove, an oblique beam extending toward the facing struts and having tip portions coupled to each other in a mountain shape by a coupling member, since sheet covering the grooves on these oblique beam is attached, Ru der which an effect that work in rainy weather becomes possible.
[0045]
The oblique beam of the invention of claim 5 is configured to be extendable and retractable, and is rotatably attached to an auxiliary column attached to the upper end of one column and the other end of the other column. Since it is locked to the upper end, the assembly and the length adjustment work can be performed from the other column side, so that the assembly can be easily performed.
[0046]
In the invention of claim 6 , the cross beam is configured to be bendable and is housed in the lower part of the cross beam when not in use, and is attached with an electric lamp holding plate that is bent and protrudes outward during use. There is an effect that an electric lamp for illumination can be supported in the work.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first embodiment of the present invention.
FIG. 2 is a perspective view in a state where an oblique beam is folded.
3A is a perspective view of a mounting base, and FIG. 3B is a front view of a fixing pin.
FIG. 4 is a perspective view in a state where a net is attached.
FIG. 5 is a cross-sectional view showing a mounting state of a cross beam and a net.
FIG. 6 is a cross-sectional view showing a state of a cross beam and a net attached with a hanging tool.
FIG. 7 is a front view showing a relationship between a support column and an oblique beam.
FIG. 8 is a diagram showing a state at the tip of two oblique beams.
FIG. 9 is a perspective view of an electric lamp holding plate.
FIG. 10 is a perspective view showing a state where an electric lamp holding plate is attached to a cross beam.
FIG. 11 is a front view of a second embodiment of the present invention.
FIG. 12 is a perspective view of a mounting base.
FIG. 13 is a front view of an oblique beam.
FIG. 14 is a side view of an oblique beam.
FIG. 15 is a front view of a state in which an oblique beam is attached to a column.
FIG. 16 is a front view showing a state in which an oblique beam is attached to a column when groove widths are different.
[Explanation of symbols]
1 Earth retaining panel (periphery of groove)
2 Groove 10 Fence 11 Mounting base 15 Post 21 Horizontal beam 22 Projection (projection)
24 Connecting tool 31 Net 32 Horizontal line 33 Vertical line 41 Rotating lever 45 Diagonal beam 46 Coupling recess 47 Coupling member 50 Sheet 61 Electric lamp holding plate 71 Mounting base 81 Auxiliary post 81a Adhering piece 83 Diagonal beam 84 First beam 85 Second Beam 86 Locking piece

Claims (6)

In the excavation method, a plurality of mounting bases laid along the both sides of the excavated groove at an interval on the peripheral edge thereof;
A plurality of supports fixed to the top of these mountings;
A plurality of cross beams spanned between these columns and connected to the columns via a connector;
A net composed of wire rods and attached between cross beams ;
An oblique beam connected to the upper end of each column via a rotation lever so as to be rotatable.
A fence for excavation method, comprising: a coupling member that is inserted into a front end portion of each of the diagonal beams and connects the diagonal beams .   The net consists of wires arranged vertically and horizontally in a grid pattern, and a vertical line is attached to one side of the horizontal line, and the horizontal line is locked to a protrusion projecting from the side of the horizontal beam. The fence for excavation method according to claim 1, wherein the fence is fastened together with the transverse beam.   The fence for excavation method according to claim 1 or 2, wherein a support is fixed to a lower end portion of the support column.   Oblique beams are attached to the upper ends of the struts facing each other across the groove and extending toward the facing struts, and the tip portions are coupled to each other in a mountain shape by a coupling member. A fence for excavation method according to claim 1, 2 or 3, wherein a sheet for covering the frame is attached.   The slanted beam is configured to be extendable and retractable, and one end is rotatably attached to an auxiliary column attached to the upper end of one column, and the other end is locked to the upper end of the other column. The fence for excavation method according to claim 1, 2 or 3, wherein The horizontal beam is configured to be bendable and is accommodated in a lower portion of the horizontal beam when not in use, and has an electric lamp holding plate that is bent and protrudes outward when in use . The fence for excavation methods described in any one.

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