JPH06240887A - Temporary post and safety fence using the same - Google Patents

Abstract

PURPOSE:To enhance workability and safety of installation and removal of a post or a safety fence by inserting a main body into a lashing hole of a cover steel plate to lock it in the hole and fixing the main body to a position where it is locked by means of a fixing means. CONSTITUTION:A temporary post 2 is erected on a cover steel plate 1, where a main body 7 and a locking piece 10 are inserted into a lashing hole 6 of the plate 1 to connect them thereto. And a nut of a main body fixing means 8 is tightened, whereby an upper plate 5 of the plate 1 is held between the nut and the piece 10 through a press member. As a result, there is no need to bend the body or lean forward to peep into an opening from the plate 1 when the temporary post 2 is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary support column which is detachably erected on the edge of a steel plate and a safety fence using the same.

[0002]

2. Description of the Related Art For example, in a subway construction or a construction work by an open-cut construction method, as shown in FIG. 22, a pillar 101 made of H-shaped steel is built in an excavation trench, and the H-shaped steel is placed at a predetermined height of the pillar 101. A frame structure is constructed in which a horizontal member 102 composed of is supported, and a work stage 104 is formed by arranging steel plates 103 on the upper sides of the adjacent horizontal members 102.

On the work stage 104, the covering steel plate 103 is removed from the work stage 104 located below the work stage 104 or the groove bottom 105, where the work is carried in, the material is carried in, and the waste soil, waste material, etc. are carried out. As a result, the opening 106 is formed.

The operator is instructed to install a safety fence around the opening 106 in order to enhance the safety of work on the work stage 104. For example, as shown in FIG. The handrail 110 is fixed to the temporary support column 109 supported by the upper and lower flanges 107 of the horizontal member 102 at the edge of the frame 106 via the clamper 108 by using the fixing means such as the bolt 112, the wire 117, and the clamper 108. Are arranged.

The clamper 108 has a strut holding portion 113 that holds the lower portion of the temporary support 109 by screwing a bolt 112, and a flange holding portion that holds the flange 107 of the cross member 102 by screwing the bolt 114. 1
And 15.

Further, as shown in FIG. 24, a temporary support column 116 is welded to the upper surface of the cross member 102 and the steel plate 103, and a leg portion 109 is fixed to this to support the handrail 110.
Although not shown, a temporary pillar 116 is welded to the upper surfaces of the cross member 102 and the steel plate 103, and the pipe-shaped leg portion 1 is attached to this.
Safety fence 11 with handrail 110 by inserting and fixing 09
First grade is scattered.

[0007]

By the way, since the height of the H-shaped steel 102 is about 150 to 250 mm and the height of the covering steel plate 103 is about 150 mm, the covering steel plate 103 is as follows.
From the upper surface of the horizontal member 102 to the flange 107 of the nearest horizontal member 102 is about 150 mm, and the distance from the upper surface of the steel plate 103 to the flange 107 of the next horizontal member 102 is about 300 to 40.
The distance from the upper surface of the covering steel plate 103 to the furthest flange 107 of the H-shaped steel 102 is about 300 to 650 mm.

To fix the temporary support column 109 to the horizontal member 102, for example, two clampers 108 are connected to the lower part of the temporary support column 109 at an interval approximately the same as the interval between the horizontal members 102 in the vertical direction. Post 109 and clamper 1
At a position more than half the width of the cross member 102 is separated from the edge of the covering steel plate 103 by holding the 08 and bending the upper half of the covering steel plate 103 so that the upper body is bent or crawling on the covering steel plate 103. It is said that the upper clamper 108 is fixed to the upper flange 107, and thereafter, the upper clamper 108 is crawled on the steel plate 103 so as to lean further into the opening 106, and the clamper 108 is fixed to the lower flange 107. The procedure is done.

As described above, in the installation work of the temporary support column 109, the temporary support column 109 having a moderate weight by bending the upper half of the body over the cover steel plate 103 or crawl on the cover steel plate 103. And clamper 108
The workability is extremely poor because it is carried out by holding.

In addition, especially the lower clamper 108 is attached to the cross member 1.
The work of fixing to the flange 107 of 02 is largely covered steel plate 1
Since he leans forward from 03, he is in danger of falling.

[0011] Such a disadvantage in enhancing workability and safety occurs not only when assembling the safety fence 111 but also when removing the safety fence 111.

The structure in which the temporary support column 116 is welded to the upper surface of the horizontal member 102 or the covering steel plate 103 to fix the safety fence 119 to the temporary supporting column 116 is the horizontal member 102 or the covering steel plate 1.
Since 03 is a so-called leased property, there is a problem that a lot of labor, time, and cost are required to restore the property to the original state when it is returned.

The present invention has been completed in view of the above technical problems, and is provided in a main body which is inserted into a lashing hole of a covering steel plate and is locked to the covering steel plate, and a position where the main body is locked to the covering steel plate. By providing the main body fixing means for fixing, the workability and safety of installing or removing the support pillars or safety fences is improved, and further, the temporary support pillars and the safety using the temporary support pillars that do not require special restoration work at the time of removal. The purpose is to provide a fence.

[0014]

In order to achieve the above-mentioned object, a temporary support column of the present invention has a main body which is inserted into a lashing hole of a covering steel plate and is locked to the covering steel plate, and this main body is covered with the covering steel plate. It is characterized by comprising a main body fixing means for fixing at a locked position.

Hereinafter, the temporary support of the present invention will be described more clearly,
And I will explain it concretely so that it can be understood correctly,
The temporary support column of the present invention is not limited to this specific description, but extends to all modes within the technical idea of the temporary support column of the present invention.

As the coated steel sheet used in the present invention, one commercially available as a coated steel sheet may be used.
At the four corners of the top plate of the commercially available steel sheet, the diameter (diameter) of 60 to 6 is used to hang it with a crane when installing or removing the steel sheet.
5 mm lashing holes (steel suspension holes) are formed.

In the present invention, the main body may be formed so as to be inserted into the lashing hole of the covered steel plate so as to be locked by the covered steel plate. For example, the lower end portion of the main body extends laterally. The extended portion is received by the back surface of the upper plate of the covering steel plate so that the main body is locked to the covering steel plate.

However, in order to facilitate the insertion and removal of the main body into and from the lashing hole, the main body is swingably connected to the main body and has a cross-sectional shape smaller than the shape of the lashing hole. It is advantageous that a long engaging piece is provided and both ends in the longitudinal direction of the engaging piece are received by the back surface of the upper plate of the covering steel plate so that the main body is locked to the covering steel plate.

In this case, when the engaging piece and the main body are inserted into the lashing hole with the longitudinal direction of the engaging piece facing up and down and the main body is vibrated lightly, the engaging piece rotates to an angle that cannot pass through the lashing hole. By subsequently pulling up the main body upward, both ends of the engagement piece in the longitudinal direction can be received by the back surface of the upper plate of the covering steel plate.

Further, in this case, when the main body is lowered by a predetermined amount from the engaged state and is vibrated lightly, the engaging piece further rotates and becomes an angle at which it can pass through the lashing hole, and the main body is continuously pulled up. Thus, the main body and the engaging piece can be pulled out from the lashing hole.

Here, it is also possible to swingably connect the central portion of the above-mentioned engaging piece to the main body, but it facilitates rotation of the engaging piece at the time of insertion, and the engaging piece becomes natural when it is taken out. It is advantageous to connect the engagement piece to the body at a position which is longitudinally eccentric from its center in order to be oriented vertically.

The shape of the main body of the present invention is not particularly limited, and for example, a columnar portion having a predetermined height of the main body can be provided,
The pillars of the safety fence, which will be described later, may be joined to the pillars using a numbering wire or a clamper, or the pillars may be externally fitted and supported on the pillars so that they can be bolted.

The main body fixing means may be constructed so that the main body can be fixed to the position where the main body is locked to the steel plate. For example, the main body fixing means is screwed to the main body so as to be able to move forward and backward, and is attached to the upper surface of the steel plate. It can be configured with a nut that is received.

In this case, provision of the above-mentioned locking means for the nut is not hindered. If this locking means is provided, it is possible to prevent the fixed state of the main body from loosening for a long period of time, so that the safety is further ensured. This is advantageous because it can be achieved.

Further, in this case, the formation of the tool engaging portion on which the anti-rotation tool is engaged and disengaged in the main body is not hindered, and the anti-rotation tool is engaged with the tool engaging portion when screwing or loosening the nut. Prevent the body from turning around with the nut,
Workability can be improved.

The above-mentioned nut can be constructed so as to be directly received by the upper surface of the covered steel plate. However, when tightened, it is possible that the tightening of the nut will be incomplete due to the friction between the nut and the covered steel plate. In order to prevent it, a pressing member that can be received on the upper surface of the steel plate is provided in the main body so that it can move forward and backward,
It is advantageous to indirectly receive the nut on the upper surface of the steel plate covering through the pressing member.

The shape of this pressing member is not particularly limited as long as it is formed so as to be received on the upper surface of the steel plate covered and also to receive the nut. For example, it may be formed in a flat plate shape, but it has a predetermined height. By providing the columnar part, it is possible to ease the work posture of tightening and loosening the nut, and also to connect the pillar of the safety fence described later to this columnar part with a number line or clamper, The pedestal may be externally fitted to and supported by, and further bolted.

The main body fixing means includes a rack formed on the main body, a pressing member which is supported by the main body so as to be able to move up and down, and which swingably supports a pawl engaged with and disengaged from the rack, and the pawl on the main body side. It is also possible to configure a pressing spring that urges and a release operation tool that pushes the claw against the press spring toward the opposite body side. With this configuration, the pressing member is moved up and down while operating the release operation tool. This is advantageous because the fixing work and the fixing release work of the main body are easier than the case where the nut is screwed back and forth to raise and lower.

For example, a pedestal of a safety fence is connected to the temporary support of the present invention, but pedestal fixing means for fixing the pedestal to the temporary support can be provided.

The pedestal fixing means may be constructed so that the pedestal can be fixed to the temporary stanchion. For example, each pedestal may be provided with a screw member or a shaft member such as a pin which is radially inserted. Can be configured to.

The screw member or the pin may be fixed to the main body or the fixing means, or may be configured to be supported by the main body or the fixing means so as to be able to move back and forth.

Further, holes, grooves, etc., through which the screw members or pins are inserted, are formed in each of the pedestals.

As the holes formed in the pedestal, for example, a round hole into which a screw of a screw member is inserted, a long hole into which a screw of a screw member is inserted, a hole through which a head of a screw member can be inserted, and a continuous hole to this hole. , A daruma hole formed by a hole through which the leg portion of the screw member is inserted, and the groove may be a U-shaped groove or an L-shaped groove extending upward from the lower end of the pedestal.

Here, when the screw member is fixed to the main body or the fixing means, a nut is screwed into the screw, and the pedestal is held between the nut and the main body or the fixing means.
It is possible to prevent the pedestal from slipping out of the screw member or rattling.

When the pin is fixed to the main body or the fixing means, a split pin insertion hole is formed at the tip of the pin, and the pin inserted into the split pin insertion hole and the main body or the fixing means receive the pedestal. It is possible to prevent the removal of the pedestal from the pin by allowing the removal prevention piece to swingably be supported at the tip of the pin and allowing the removal prevention piece and the main body or fixing means to receive the pedestal. .

When the screw member is movably supported by the main body or the fixing means, the tip of the screw member is inserted into the hole or groove formed in the pedestal and screwed to the main body or the fixing means.

When the pin is supported by the main body or the fixing means so as to be able to move back and forth, the pin is inserted between the pedestal and the main body or the fixing means, and the pin is prevented from coming out by a split pin or a retaining member. Is composed of.

As another pedestal fixing means of the present invention, it is conceivable that the main body or the main body fixing means is provided with a screw for fastening the lower part of each pedestal. In this case, each pedestal is sandwiched between the main body or the fixing means and the screw, and each pedestal is externally fitted to the main body or the fixing means, and It is conceivable that the peripheral wall is clamped.

In order to achieve the above-mentioned object, the safety fence of the present invention has a plurality of temporary columns constructed as described above, a plurality of pedestals fixed to these temporary columns, and fixed to each pedestal. It is characterized by including a handrail.

Hereinafter, the safety fence of the present invention will be specifically described so as to be more clearly and correctly understood, but the safety fence of the present invention is not limited by this specific description. Rather, it extends to all aspects within the scope of the technical concept of the safety fence of the present invention.

Here, in order to avoid duplication, the description common to the description of the temporary support of the present invention will be omitted, and only the other will be described.

In the above-mentioned temporary support of the present invention, the stanchion fixing means for fixing the stanchion to the temporary stanchion is provided in the temporary stanchion. The stanchion fixing means is provided in the stanchion or is temporarily installed together with the stanchion. It can be provided over the pillar.

As the pedestal fixing means provided on the pedestal,
For example, a configuration including a screw member that is supported by a pedestal so as to be capable of screwing back and forth is conceivable. As this configuration, a configuration in which a temporary support column is sandwiched between the screw member and the peripheral wall of the pedestal and a temporary support column It is conceivable that the pedestal is externally fitted, and the temporary support column is sandwiched between the screw supported by the peripheral wall of the pedestal so as to be able to advance and retract and the portion of the peripheral wall of the pedestal facing the screw.

As the pedestal fixing means provided over the pedestal and the temporary support, for example, each hole formed in the pedestal and the temporary support, and a screw shaft (bolt) and a pin commonly inserted into these holes. And other shaft members.

Further, as another pedestal fixing means, a claw metal fitting supported on a lower peripheral wall of each pedestal formed in a pipe shape so as to be swingable in a radial direction, and the claw metal fitting inside each pedestal. A pressing spring that urges the pressing spring, a release operation tool that pushes the claw metal fittings out of each pedestal against the pressing spring, and a columnar portion of a temporary support pillar that is internally fitted to each pedestal. It is conceivable that the structure has a locking portion for engaging and disengaging.

[0046]

In the temporary support column of the present invention, which has the above-described structure, the main body is inserted into the lashing hole of the cover steel plate from above and is locked to the cover steel plate, and the position where the main body is locked to the cover steel plate by the main body fixing means. By fixing it to, the temporary support pillar can be erected on the end portion of the covered steel plate. Further, by releasing the fixing action of the main body fixing means and pulling out the main body from the lashing hole of the covering steel plate, the temporary support column can be removed from the covering steel plate.

Therefore, it is not necessary to crawl on the cover steel plate at the time of installation or removal, or to lean out from the cover steel plate to erect the temporary support pillars. Moreover, the temporary support pillars are not welded to the cover steel plate or the horizontal members. Therefore, there is no need to perform a special work for restoring the original condition after removing the welding marks and the like, and it has an effect that the safety fence can be installed or removed very easily and safely.

In the safety fence of the present invention, the handrail may be fixed in advance as described above. Alternatively, after the pedestals are fixed to the temporary columns, the handrails may be fixed to these pedestals. Good. Furthermore, this safety fence can be disassembled and removed very simply by reversing the installation procedure.

Therefore, it is not necessary to crawl on the covered steel plate or lean out of the covered steel plate to install or remove the temporary support pillar during installation or removal, and the temporary support pillar is not covered with the covered steel plate or the horizontal plate. Since it is not welded to the material, it has the effect of eliminating the need for special restoration work to remove welding marks after removal.

[0050]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the accompanying drawings, but the present invention is not limited thereto. The safety fence of the present invention shown in the front view of FIG. 1 includes a plurality of temporary columns 2 fixed to a steel plate 1, a plurality of columns 3 connected to each temporary column, and upper ends of the columns 3. And a handrail 4 for connecting.

As shown in the perspective view of FIG.
Is a commercially available product, and at the four corners of the upper plate 5, lashing holes (steel hanging holes) 6 having a diameter (diameter) of 60 to 65 mm for suspending the steel plate 1 for installation and removal by a crane are formed. There is.

As shown in the vertical sectional front view of FIG. 3, the temporary support columns 2 are inserted into the lashing holes 6 of the covering steel plate 1 and are connected to the upper plate 5 of the covering steel plate 1 by a main body 7 and a main body 7. The main body fixing means 8 is fixed to the cover steel plate 1 at the position where it is locked.

The main body 7 may be formed so as to be inserted into the lashing hole 6 so as to be locked by the upper plate 5 of the cover steel plate 1. For example, as shown in FIG. Can be configured so that the main body 7 is locked to the covering steel plate 1 by extending it laterally and receiving the extending portion on the back surface of the upper plate 5 of the covering steel plate 1.

However, in this embodiment, in order to facilitate the insertion / extraction of the main body 7 into / from the lashing hole 6, as shown in FIG. An engaging piece 10 having a cross-sectional shape smaller than the shape and longer than the diameter of the lashing hole 6 is provided, and both ends in the longitudinal direction of the engaging piece 10 are received by the back surface of the upper plate 5 of the cover steel plate 1. Thus, the main body 7 is locked to the covering steel plate 1.

Here, the central portion of the engaging piece 10 is connected to the main body 7
Although it is also possible to connect the engaging piece 10 swingably to this, in this embodiment, the engaging piece 10 can be easily rotated at the time of insertion and the engaging piece 10 is naturally oriented vertically at the time of extraction. Therefore, the engagement piece 10 is connected to the main body 7 at a position eccentric from the center in the longitudinal direction.

That is, in this case, as shown in FIG.
Engaging piece 1 so that the longer half of engaging piece 10 is on the upper side
When the engaging piece 10 and the main body 7 are inserted into the lashing hole 6 with 0 directed upward and downward and the main body 7 is vibrated lightly, the engaging piece 10 rotates to an angle that cannot pass through the lashing hole 6, and the main body 7 continues. The engaging piece 10 by pulling up the
Both ends in the longitudinal direction can be received on the back surface of the upper plate 5 of the steel plate 1 for covering.

On the other hand, when the main body 7 is lowered by a predetermined amount from the engaged state and is vibrated lightly, the engaging piece 10 further rotates to an angle (in this case, the engaging piece 10) which can pass through the lashing hole 6. The half of the longer side is on the lower side.)
0 can be extracted from the lashing hole 6.

The shape of the main body 7 is not particularly limited. For example, as shown in FIG. 6, the main body 7 may be provided with a columnar portion 11 having a predetermined height, and the columnar portion 11 may be a safety fence. It is possible to connect the pedestal 3 with a numbered wire or clamper, or to fit the pedestal 3 onto the columnar portion 11 to support it.

However, in this embodiment, as shown in FIG. 3, in order to facilitate the work of fixing the main body 7 to the covering steel plate 1 by the main body fixing means 8, the lower portion 12 made of strip steel and the upper end thereof are welded. The main body 7 is constituted by the bolts 13 that are formed.

The main body fixing means 8 covers the main body 7 and the steel plate 1
It suffices that the nut 14 is screwed into the bolt 13 of the main body 7 so as to be able to advance and retreat in the vertical direction, and is received by the upper surface of the covered steel plate 1 in this embodiment. I have it.

The nut 14 can be directly received on the upper surface of the steel plate 1 to be covered,
In this embodiment, in order to prevent incomplete tightening of the nut 14 due to friction between the nut 14 and the covering steel plate 1 at the time of tightening, the pressing member 15 which is received on the upper surface of the covering steel plate 1 is advanced and retracted to the main body. Provided as possible, the nut 14
Is indirectly received on the upper surface of the steel plate 1 through the pressing member 15.

The shape of the pressing member 15 is not particularly limited as long as it is formed so as to be received on the upper surface of the covered steel plate 1 and to receive the nut 14 on the upper end.
As shown in FIG. 3, it may be formed in a flat plate shape, but as shown in FIG. 3, a flat plate-shaped contact plate 16 that receives the pressing member 15 on the upper surface of the covering steel plate 1, and an upper surface of this contact plate 16. And a hollow columnar portion 17 which is erected upright, and the main body 7 is inserted into the contact plate 16 and the columnar portion 17.

As a result, the working posture of the nut 14 for tightening / releasing work can be facilitated, and the columnar portion 1
It is possible to connect the pedestal 3 of the safety fence to 7 by using a numbered wire or a clamper, or to fit the pedestal 3 to the columnar portion 17 so as to support it.

In this case, there is no hindrance to the provision of the anti-loosening means for the nut 14, such as the anti-loosening nut 18 screwed onto the bolt 13 of the main body 7. If the anti-loosening means is provided, the main body 7 is fixed. This is advantageous because the loosening of the state can be prevented for a long period of time and safety can be secured for a long period of time.

Further, in this case, the formation of the tool engaging portion 19 on which the rotation stopping tool is engaged and disengaged in the main body 7 does not prevent, and the nut 14 is rotated around the tool engaging portion 19 when screwing or loosening the nut 14. It is possible to prevent the main body 7 from turning around with the nut 14 by engaging the stop tool, and to improve workability.

The above-mentioned temporary support column 2 and the pedestal 3 can be connected by using a numbering wire, a clamper or the like. In this embodiment, the pedestal fixing means 20 for fixing the pedestal 3 to the temporary support column 2 is provided.
Is provided.

The pedestal fixing means 20 can be provided on the temporary support pillar 2, on the pedestal 3, or over the temporary support pillar 2 and the stanchion 3. In this embodiment, the stanchion fixing means is provided. 20 is provided on the temporary support column 2.

That is, in this embodiment, the pedestal fixing means 20
Is provided with a bolt 22 which is supported on the abutment plate 16 via a bracket 21 so as to be screwed back and forth in the horizontal axis direction.

The pedestal 3 is inserted into the columnar portion 17 of the temporary support column 2 from above and externally fitted thereto, and a part of the peripheral wall thereof is fixed to the temporary columnar support 2 by fastening the bolt 22 to the columnar portion 17.

Therefore, it is not necessary to form a hole or the like in the pedestal 3, and the processing cost of the pedestal 3 can be reduced.

The handrail 4 may be separate from the pedestal 3 or may be integrally formed. Pedestal 3 and handrail 4
In the case of integrally forming and, it is possible to integrate the respective members by welding, but it is cheaper to form one member by bending it into a U-shape.

Further, the handrail 4 formed separately from the pedestal 3
As a method of fixing the to the pedestal 3, it may be tied with a numbered wire or connected by using a pipe clamper C as shown in FIG.

The temporary support column 2 according to this embodiment includes a steel plate 1 for covering.
Standing on, the main body 7 and the engaging piece 10 are inserted into the lashing holes 6 of the cover steel plate 1 to engage with each other, and the nut 14 of the main body fixing means 8 is tightened. The upper plate 5 of the covering steel plate 1 is clamped by the engagement piece 10. As a result, the main body 7 is fixed in a state of being engaged with the covering steel plate 1, and the temporary support column 2 is erected on the end portion of the covering steel plate 1.

Therefore, when installing the temporary support column 2, it is not necessary to bend over to cover the opening of the cover steel plate 1 or lean out of the edge of the cover plate 1 into the opening. 2 can be installed upright and the main body fixing means 8 can be operated in a comfortable posture, so that workability can be improved.

In the pedestal 3 of this embodiment, the temporary support column 2 is erected on the end of the cover steel plate 1, and then inserted into the temporary support column 2 from above and externally fitted, and the bolts 22 of the pedestal fixing means 20 are tightened. It is fixed to the temporary support pillar 2 by tightening the peripheral wall of the pillar 3 to the temporary support pillar 2 together.

Therefore, even in the work of installing the pedestal 3, the covering steel plate 1
It is not necessary to bend the body so as to look into the opening from the bottom or lean out from the edge of the covering steel plate 1, the leg end 3 can be safely installed, and the pedestal can be fixed in a comfortable posture. Since the means 20 can be operated, workability can be improved.

In the above embodiment, the main body fixing means 8
Is composed of the nut 14 and the pressing member 15, but it may be constituted so that the main body 7 can be fixed to the position where it is locked to the covering steel plate 1. For example, as shown in FIG. The rack 23 and the main body 7 are supported so as to be able to move up and down,
A pressing member 15 that is received on the upper surface of the steel sheet covering 1, a claw 24 that is swingably supported by the pressing member 15 and that is engaged with and disengaged from the rack 23, and a pressing spring 25 that biases the claw toward the main body 7 side. It is also possible to configure with a lever-like release operation tool 26 that pushes the claw 24 toward the side opposite to the main body against the pressing spring 25.

According to the main body fixing means 8, the pressing member 15 can be moved up and down while pushing the release operation tool 26, and the fixing work and the release operation of the main body can be performed more than the case where the nut 14 is screwed back and forth to move up and down. Besides being simple, the main body 7 can be fixed to the covering steel plate 1 in a short time.

Further, the pedestal fixing means 20 of the present invention may be constructed so that the pedestal 3 can be fixed to the temporary support 2. For example, the following various modes are conceivable.

First, the pedestal fixing means 20 shown in FIG. 8 is fixed to the pressing member 15, and the receiving metal fitting 28 for receiving the outer peripheral surface of the pedestal 3 from one side, and the bolt for pressing the pedestal 3 on the receiving metal fitting 28. And 29.

Also, for example, the pedestal fixing means 20 shown in FIG.
Is a screw member 30 protruding from the columnar portion 17 of the temporary support column 2.
And a nut 31 to be screwed into the stud, and the screw member 30 is radially inserted into each pedestal 3, and the nut 31 is tightened, so that the pedestal is provided between the columnar portion 17 and the nut 31. 3 is sandwiched.

The pedestal fixing means 20 shown in FIG. 10 or FIG.
Instead of the screw member 30 of the pedestal fixing means 20 of FIG.
The pin 32 is provided upright on the columnar portion 17, and the pin 32 is inserted through each pedestal 3 in the radial direction.

In these cases, the swing-out retaining piece 33,
Alternatively, each pedestal 3 is prevented from coming out of the pin 32 by a retaining means such as a split pin 34.

In the case of the pedestal fixing means 20 shown in FIGS. 9 to 11, each pedestal 3 has a screw member 30 or a pin 32.
A hole or a groove for inserting the through hole is formed.

As the holes formed in the pedestal 3, for example, a round hole 35 shown in FIG. 12, a long hole 36 shown in FIG. 13, and a head of the screw member 30 shown in FIG. 14 are inserted. It is conceivable that a dull hole 37 or the like is formed by a hole 37a that can be formed and a hole 37b that is continuous with the hole 37a and through which the leg portion of the screw member 30 is inserted.

As the groove, for example, a U-shaped groove 38 extending upward from the lower end of the pedestal 3 as shown in FIG. 15, for example, extending upward from the lower end of the pedestal 3 as shown in FIG.
Further conceivable are L-shaped grooves extending laterally from the upper end thereof.

In the case of the pedestal fixing means 20 shown in FIGS. 9 to 11, it goes without saying that the roles of the temporary support column 2 and the pedestal column 3 can be reversed.

Another pedestal fixing means 2 of the present invention shown in FIG.
No. 0 is equipped with a bolt 40 that is rotatably inserted in the pedestal 3 and screwed into the temporary support column 2, and the head of the bolt 40 and the temporary support column 2 sandwich the pedestal 3 between them.

Further, in another pedestal fixing means 20 of the present invention shown in FIG. 18, a pin 41 commonly inserted in the pedestal 3 and the temporary stanchion 2 and a retaining means 42 for the pin 41 are provided. .

The other pedestal fixing means 20 of the present invention shown in FIG. 19 is a claw metal fitting 43 supported by a peripheral wall of each pipe-shaped pedestal 3 so as to be swingable in the radial direction, and a claw metal fitting. A pressing spring 44 that urges 43 toward the inside of each pedestal 3, a release operation tool 45 that pushes the above-mentioned claw metal fitting 43 to the outside of each pedestal 3 against this pressing spring 44, and an inside of each pedestal 3 It has a locking portion 46 which is formed on the columnar portion 17 of the temporary support column 2 to be fitted and which engages and disengages the claw fitting 43. The locking portion 46 is composed of a rack having tooth rows arranged vertically.

As another embodiment of the present invention, as shown in FIGS. 20 and 21, the lashing hole 6 of the main body 7 is formed.
As shown in FIGS. 20 and 21, the lashing hole 6 is swingably connected to the lower end of the main body 7, has a cross-sectional shape smaller than that of the lashing hole 6, and is easy to insert into and remove from the lashing hole. An engaging piece 10 having a diameter larger than 6 is provided, and both ends in the longitudinal direction of the engaging piece 10 are received by the back surface of the upper plate 5 of the steel plate 1 to be held, whereby the main body 7 is locked to the steel plate 1. I am trying.

In this case, the engagement piece 10 facilitates the rotation of the engagement piece 10 at the time of insertion, and allows the engagement piece 10 to naturally become vertically oriented at the time of extraction. The central portion is swingably connected to the main body 7, and a notch 10a is formed at one end to be eccentric.

Incidentally, 20 is a pedestal fixing means, and this pedestal fixing means 20 is for fixing the pedestal 3.

The pedestal fixing means 20 can be provided on the temporary support 2, the pedestal 3, or the temporary support 2 and the stud 3. In this embodiment, the pedestal fixing means is provided. 20 is provided on the temporary support column 2.

That is, in this embodiment, the pedestal fixing means 20
Is provided with a bolt 22 supported on the temporary support column 2 via a bracket 21 so as to be capable of being screwed back and forth in the horizontal axis direction.

The pedestal 3 is inserted into the columnar portion 17 of the temporary support column 2 from above and externally fitted thereto, and a part of the peripheral wall thereof is fixed to the columnar portion 17 by the bolts 22 to be fixed to the temporary support column 2.

Therefore, it is not necessary to form a hole or the like in the pedestal 3, and the processing cost of the pedestal 3 can be reduced.

[0098]

As described above, the temporary support column of the present invention is inserted into the lashing hole of the cover steel plate and fixed to the main body locked to the cover steel plate and the position where the main body is locked to the cover steel plate. Since it is provided with the main body fixing means, without bending the body so as to look into the opening from the covering steel plate, crawling on the covering steel plate, or leaning out from the edge of the covering steel plate,
The main body can be engaged with the covering steel plate, and the main body can be fixed to the position where the main body is locked to the covering steel plate by the main body fixing means.

Further, the action of the main body fixing means is achieved without bending the body so as to look into the opening from the covering steel plate, crawling over the covering steel plate, or leaning over the edge of the covering steel plate. Can be removed and the main body can be pulled out from the lashing hole and removed.

Therefore, the work posture becomes easier, the workability can be improved, and the safety can be improved. In addition, it is not necessary to perform a special work for recovering the original condition such as repairing the welding point, and the cost is short and the cost is low. The temporary support can be removed.

Further, since the safety fence of the present invention uses the temporary support pillar of the present invention, when installing and removing it, the body is bent so as to look into the opening from the covering steel plate, and the user may crawl on the covering steel plate. , It is not necessary to lean out from the edge of the covered steel plate, the work posture becomes easier, the workability can be improved, and the safety can be extremely improved. The safety fence can be removed in a short time and at low cost without the need to restore the original condition.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a safety fence of the present invention.

FIG. 2 is a perspective view of a covered steel plate used in the present invention.

FIG. 3 is a vertical sectional front view of a temporary support column according to an embodiment of the present invention.

FIG. 4 is a front view of a modified example of the main body of the temporary support column according to the embodiment of the present invention.

FIG. 5 is a front view of the main body of the temporary support column according to the embodiment of the present invention.

FIG. 6 is a front view of a temporary support column according to another embodiment of the present invention.

FIG. 7 is a vertical cross-sectional front view of a main body fixing means according to another embodiment of the present invention.

FIG. 8 is a vertical sectional front view of a pedestal fixing means according to another embodiment of the present invention.

FIG. 9 is a side view of a modified example of the pedestal fixing means of the present invention.

FIG. 10 is a side view of another modified example of the pedestal fixing means of the present invention.

FIG. 11 is a side view of another modification of the pedestal fixing means of the present invention.

FIG. 12 is a front view showing a shape of a hole formed in a pillar.

FIG. 13 is a front view showing another shape of the hole formed in the pedestal.

FIG. 14 is a front view showing another shape of the hole formed in the pedestal.

FIG. 15 is a front view showing a shape of a groove formed in a pillar.

FIG. 16 is a front view showing another shape of the groove formed in the pedestal.

FIG. 17 is a side view of still another modification of the pedestal fixing means of the present invention.

FIG. 18 is a side view of still another modification of the pedestal fixing means of the present invention.

FIG. 19 is a vertical sectioning device of another modification of the pedestal fixing means of the present invention.

FIG. 20 is a vertical sectional front view of a temporary support column according to another embodiment of the present invention.

21 is a side view of the temporary support column shown in FIG. 20. FIG.

FIG. 22 is a configuration diagram of a ramen structure constructed in an excavation trench for subway construction by the open-cut construction method.

FIG. 23 is a configuration diagram of a conventional example.

FIG. 24 is a configuration diagram of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Covered steel plate 2 Temporary column 3 Pillar 4 Handrail 5 Upper plate 6 Lashing hole 7 Main body 8 Main body fixing means 10 Engaging piece 14 Nut 15 Holding member 17 Columnar portion 18 Nut 20 Pillar fixing means 25 Holding spring 26 Release operation tool 43 Claw metal fitting 44 Holding spring 45 Release operation tool 46 Locking part

Claims (22)

[Claims] 1. A temporary support column comprising: a main body which is inserted into a lashing hole of a steel covering plate and is locked to the steel covering plate; and a main body fixing means for fixing the main body to a position where the main body is locked to the steel covering plate. . 2. The body according to claim 1, wherein the lower end portion of the main body is extended laterally, and the extended portion is received by the back surface of the upper plate of the cover steel sheet to lock the main body to the cover steel sheet. Temporary post. 3. An engaging piece, which is swingably connected to a lower end portion of the main body, has a cross-sectional shape smaller than the shape of the lashing hole, and is longer than the diameter of the lashing hole. The temporary support column according to claim 1, wherein the main body is locked to the cover steel plate by receiving both end portions of the base plate on the back surface of the upper plate of the cover steel plate. 4. The temporary support column according to claim 3, wherein the engagement piece is connected to the main body at a position eccentric from the center in the longitudinal direction. 5. The temporary support column according to claim 1, wherein a columnar portion having a predetermined height is provided on the main body. 6. The temporary support column according to claim 1, wherein the main body fixing means includes a nut that is screwed onto the main body so as to be able to advance and retreat in the vertical direction, and is received by the upper surface of the steel plate covered. 7. The temporary support column according to claim 6, further comprising nut locking means. 8. The temporary support column according to claim 6, wherein the main body is formed with a tool engaging portion for engaging and disengaging the rotation stopping tool. 9. A pressing member which is received on the upper surface of the steel plate covering is provided on the main body so as to be able to move forward and backward, and the nut is indirectly received on the upper surface of the steel plate covering through the pressing member.
9. The temporary support column according to any one of 8 to 8. 10. The temporary support column according to claim 9, wherein the pressing member has a columnar portion having a predetermined height. 11. The main body fixing means includes a rack formed on the main body, a pressing member which is supported by the main body so as to be able to move up and down, and which swingably supports a pawl that is engaged with and disengaged from the rack, and the pawl on the main body side. A pressing spring for urging, and a release operation tool for pushing the claw against the pressing spring to the side opposite to the main body are provided.
The temporary support column described in 0. 12. The temporary support column according to claim 11, wherein a screw is formed on the main body instead of the rack, and a claw is engaged with and disengaged from the screw. 13. The temporary support column according to claim 1, wherein the main body or the main body fixing means is provided with pedestal fixing means for fixing the pedestal of the safety fence. 14. The temporary support column according to claim 13, wherein the pedestal fixing means includes a screw member or a pin that is radially inserted into each pedestal. 15. The temporary column according to claim 13, wherein the pedestal fixing means comprises a main body or a main body fixing means with a screw for fastening a lower portion to each pedestal. 16. A plurality of temporary columns according to any one of claims 1 to 15, a plurality of pedestals fixed to these temporary columns, and a handrail fixed to each pedestal. And a safety fence. 17. A plurality of temporary columns are provided according to any one of claims 1 to 15.
Which is a temporary pillar, wherein the pillar is provided with a pillar fixing means for fixing the pillar to the temporary pillar. 18. The safety fence according to claim 17, wherein the pedestal fixing means comprises a screw member supported by the pedestal so as to be capable of being screwed back and forth. 19. The safety fence according to claim 18, wherein the temporary support pillar is sandwiched between the screw member and the peripheral wall of the pedestal. 20. The safety fence according to claim 16, wherein pedestal fixing means for fixing the pedestal to the temporary support is provided over the pedestal and the temporary support. 21. The safety fence according to claim 20, wherein the pedestal fixing means is provided with each hole formed in the pedestal and the temporary support, and a shaft member commonly inserted into these holes. 22. The fixing means, and a pawl metal fitting supported on the lower peripheral wall of each pedestal formed in a pipe shape so as to be swingable in the radial direction, and urging the pawl metal fitting to the inside of each pedestal. It is formed on a holding spring, a release operation tool that pushes the above-mentioned claw fittings out of each pedestal against this holding spring, and a columnar portion of a temporary support pillar that is internally fitted to each stanchion. The safety fence according to claim 20 or 21, further comprising: