JP2011111864A - Safety fence for operation on roof and strut - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety fence which is easy to set and remove, and can surely ensure safety at low cost. <P>SOLUTION: The safety fence includes a plurality of struts 3 raised detachably at predetermined intervals on a roof frame portion 2a called a parapet around a flat roof part 2a of a building 1, and a horizontal frame 4 detachably provided to be laid between adjacent struts 3. The strut 3 includes a fixed clamper 16 which is fixed to the lower end of a strut body 10 and engaged with the lower surface of the roof frame portion 2a, a movable clamper 18 provided to be vertically movable along the strut body 10, a guide arm 20 provided at an upper portion of the movable clamper 18 so as to be moved up and down along the strut body 10, and an adjustment screw tool 24 screwed into a tip portion of the guide arm 20 to connect the tip portion to the movable clamper 18 so as to be relatively rotatable. The strut 3 is fixed to the roof frame portion 2a by pressing the movable clamper 18 downward by screwing operation of the adjustment screw tool 24 to hold the upper and lower surfaces of the roof frame portion 2a by the fixed clamper 16 and the movable clamper 18. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a high-level work on a roof or the like, and more particularly to a safety fence for work on a roof in a flat roof portion such as a flat roof or a roof of a building and a column used for installing the safety fence.

  In order to ensure the safety of working at high places on the roof when performing installation work such as solar panels, painting, repair, maintenance, etc. on the roof surface of the flat roof part, A scaffold is built around the building. However, it is costly to build a scaffold for the entire building, and there may be no space to install the scaffold on a narrow site.

  By the way, in the case of a building with a flat surface such as a flat roof, the applicant of the present invention can secure sufficient safety if the roof surface is surrounded by a safety fence, and the roof can be raised and lowered in one place. Focused on the fact that only a ladder was needed.

  The present invention has been made on the basis of the above points, and the purpose of the present invention is to facilitate installation and removal work, low cost, no installation space around the building, installation state Then, the safety fence for roof work which can ensure safety reliably, and the support | pillar used for installation of this safety fence are provided.

  In order to achieve the above object, the safety fence for work on the roof of the present invention is called a parapet around the flat roof portion 2 of the building 1 such as a building as shown in the first embodiment of FIGS. A plurality of support columns 3 that are detachably provided on the roof frame portion 2a at predetermined intervals and a horizontal frame 4 that is detachably provided so as to be spanned between adjacent support columns 3 are provided. A fixed clamper 16 fixed to the lower end of the column main body 10 and engaged with the lower surface of the roof frame portion 2a; a movable clamper 18 provided so as to be movable up and down along the column main body 10; and an upper portion of the movable clamper 18 A guide arm 20 provided so as to be movable up and down along the column main body 10 and an adjusting screw 24 screwed into the distal end portion of the guide arm 20 and coupled to the movable clamper 18 so as to be relatively rotatable. I have. The movable clamper 18 is pushed downward by the screwing operation of the adjusting screw 24 so that the upper and lower surfaces of the roof frame portion 2a are sandwiched between the fixed clamper 16 and the movable clamper 18 to fix the support column 3 to the roof frame portion 2a. It is characterized by that.

In order to install the above-mentioned safety fence for work on the roof, the plurality of support columns 3 provided with the clamps 34 and the horizontal frame 4 are separated and raised on the flat upper surface of the roof portion 2 respectively. Next, the columns 3 are attached and fixed to the roof frame portion 2a (parapet) around the roof portion 2 at a predetermined interval. The support column 3 is attached by inserting the fixed clamper 16 into the lower surface of the roof frame portion 2a, and then pressing the movable clamper 18 downward to press it against the upper surface of the roof frame portion 2a. The clamper 18 is pressed and the upper and lower surfaces of the roof frame portion 2a are sandwiched between the fixed clamper 16 and the movable clamper 18 to fix the column 3 to the roof frame portion 2a. Thereafter, the clamp 34 is used to span the horizontal frame 4 between the adjacent columns 3 so as to surround the periphery of the roof portion 2. The rooftop safety fence 6 is constructed so as to surround the entire outer periphery of the roof frame portion 2a. However, the horizontal frame 3 is not provided between the particular adjacent one or a plurality of support columns 3, and from there between An elevator 6A is formed through which an operator can go up and down.
Thereby, it is possible to prevent not only a roof worker but also a fall accident such as construction equipment.

  In the above configuration, the column main body 10 may be a single rod-like or pipe-like one. Moreover, the support | pillar main body 10 may be added and a telescopic structure may be mentioned later. The horizontal frame 4 may be an ordinary rod-shaped or pipe-shaped one.

  In the present invention, the lower end of the column main body 10 is bent into a substantially L shape or a substantially J shape, and the fixed clamper 16 is fixed horizontally on the bent tip. A rising portion 16a is formed on the upper surface of 16, a lowering portion 18a, 18b is formed on the lower surface of the movable clamper 18, and the rising portion and the lowering portion are formed on the upper and lower steps of the roof frame portion. It is characterized by being engaged.

  Thereby, the support | pillar 3 is standingly installed in the roof frame part 2a (parapet) around the roof part 2 in the engagement state, and not only the attachment is strong, but the support | pillar 3 may fall or incline during work. Absent.

  Mounting safety of the column 3 by forming the falling portions 18a and 18b on the lower surface of the movable clamper 18 in parallel in the front-rear direction so as to be fitted to the front and rear wall portions on the upper surface of the roof frame portion 2a (parapet). Is further improved.

  In the third aspect of the present invention, a guide hole 20 a into which the column main body 10 is slidably inserted is formed in the base portion of the guide arm 20, and the adjustment screw tool 24 is screwed into the distal end portion of the guide arm 20. A screw hole 20b to be inserted is formed, and a guide portion 11a made of a groove or a protrusion is formed along the longitudinal direction on the outer periphery of the column main body 10.

With the above configuration, the upper and lower surfaces of the roof frame portion 2 a are sandwiched by the fixed clamper 16 and the movable clamper 18, and the movable clamper 18 is pushed downward by the screwing operation of the adjusting screw tool 24. At this time, the guide hole 20a of the guide arm 20 is inclined in the vertical direction and engaged with the guide portion 11a on the outer periphery of the column main body 10 in the inclination direction, and the movable clamper 18 is displaced along the column main body 10. Absent.
The grooves or ridges formed in the guide portion 11a reinforce the column main body 10, but serve as a guide for the vertical movement of the guide hole 20a of the guide arm 20 and ensure the engagement in the inclined direction. And

  In claim 4 of the present application, the column main body 10 includes a column base 11 and a cylindrical column upper portion 12 that is extrapolated to the upper portion of the column base 11. It is characterized in that a fixing tool 28 is provided for fixing.

  With the configuration described above, the support column can be stored or lifted up and down. Moreover, the support | pillar base 11 and the support | pillar upper part 12 can be made into a telescopic structure, and the length can be adjusted short and long.

  In Claim 5 of this application, the safety net 5 is stretched between the support | pillars 3 and 3, and the lower edge of the safety net 5 and the said roof frame part 2a are the engagement piece parts 2b formed in the roof frame part 2a. It is characterized in that it is coupled through a clip device 40 engaged with the.

  By stretching the safety net 5, it is possible to reliably prevent a person or an article from falling between the columns 3 and 3. Further, by forming the engagement piece 2b on the roof frame 2a, the lower edge of the safety net 5 can be easily locked to the roof frame 2a using the illustrated clip tool 40.

  The present invention has a clamp tool 34 for detachably connecting the support column 3 and the lateral frame 4, and the clamp tool 34 is fixed to the vertical clamp part 34 a and the vertical clamp part 34 a fixed to the support body 10. The horizontal frame 4 is formed by a horizontal clamp portion 34b that is inserted and tightened and fixed.

  By using the clamp tool 34 described above, the horizontal frame 4 can be easily and firmly attached to the column main body 10. By fixing the clamp tool 34 at a plurality of upper and lower positions of the upper part and the middle part of the column main body 10, the horizontal frame 4 can be provided in parallel to the upper and lower sides of the column, and safety is further improved.

  In claim 7 of the present application, instead of the support according to any one of claims 1 to 6, a reinforcing support 66 shown in the second embodiment of FIG. 6 is used. The reinforcing column 66 has a structure in which a horizontal frame member 64 is fixed to the lower end of the reinforcing column 66 body, and the reinforcing column 66 and the tip of the horizontal frame member 64 are coupled by a diagonal beam 68. The fixing member 62 provided on the frame member 64 is detachably fixed to the convex portion of the folded roof constituting the flat roof portion of the building.

  The reinforcing column 66 is effective when the flat roof portion is a zigzag folded plate roof.

  The eighth aspect of the present invention is characterized by the support column 3 used in the safety fence for roof work according to any one of the first to sixth aspects.

  Said support | pillar 3 can be manufactured and sold separately from the other components which comprise the safety fence 6, and the support | pillar 3 can be additionally supplied according to the area of the roof part 2 in which the safety fence 6 is provided in the circumference | surroundings.

  The rooftop safety fence according to the present invention has a structure that surrounds the entire upper surface of a flat roof such as a flat roof or a rooftop of a building, and can ensure the safety of this kind of rooftop work reliably. it can. In addition, it is possible to reliably prevent not only workers but also construction articles and accessories from falling from the entire circumference of the flat roof portion.

  In addition, the pillars and horizontal frames that make up the safety fence are transported in a disassembled state, and a plurality of pillars are attached around the roof at intervals. By connecting with, a safety fence can be easily formed around the flat roof portion, and the installation and removal work can be easily performed. Furthermore, compared with the conventional rooftop working apparatus for buildings in which a scaffold is provided around the building, the cost is low and no installation space is taken around the building.

  Further, by using the support column according to any one of claims 1 to 6 and the support column according to claim 8, the fixed clamper and the movable clamper at the bottom of the support column are clamped and fixed to the upper and lower surfaces of the roof frame (parapet). Thus, it is possible to firmly fix the column without rattling, and to secure the mounting safety.

  As shown in claim 2, rattling at the time of fixing the column is achieved by engaging a rising portion and a falling portion provided on opposing surfaces of the fixed clamper and the movable clamper with the stepped portions on the upper and lower surfaces of the roof frame portion. There is no inclination and it is possible to secure the safety of mounting the struts further.

  In the invention of claim 4, the struts have a split structure, and handling is facilitated by splitting the struts when attached to the eaves end. Moreover, it can be set as a telescopic structure and the height of a safety fence can be adjusted.

  According to the fifth aspect of the present invention, the safety net is lightweight, can be easily attached and detached, and can improve the safety of the fall prevention. Further, since the safety net is attached only by hooking and locking the clip tool to the eaves end, it is possible to easily obtain the eaves end side cue which was a difficulty in attachment.

  According to the sixth aspect of the invention, it is possible to easily attach and remove the support column and the horizontal frame. Further, the horizontal frame can be formed in a plurality of upper and lower stages to improve safety.

  According to the seventh aspect of the present invention, since the eaves end side is not raised when the reinforcing column is attached, the safety during work can be increased.

It is explanatory drawing which shows the whole structure of the building and safety fence which applied this invention to the flat roof structure building. (A), (b) is the side view and front view which show a support | pillar. (A), (b) is the enlarged view of the part enclosed with the circles A and B of FIG. It is an exploded perspective view showing the support. It is sectional drawing which shows the attachment structure to the building edge of the support | pillar. (A), (b) is a side view which shows 2nd Embodiment of this invention.

Hereinafter, a first embodiment to which the present invention is applied will be described with reference to FIGS.
First, in FIG. 1, a low-walled roof frame portion 2a (eave-side overhanging portion, generally referred to as a parapet) provided around the roof portion 2 in a building 1 having a flat roof portion 2 is clamped. Column 3 is erected at a predetermined interval. A horizontal frame 4 is laid across the uppermost part between the columns 3, and safety nets 5 are stretched on the inner sides surrounded by the roof frame 2 a, the columns 3, and the horizontal frame 4. The periphery of the roof portion 2 is surrounded by a safety fence 6 composed of the support columns 3, the horizontal frame 4, and the safety net 5. Between the specific two support | pillars 3 which comprise the safety fence 6, the raising / lowering opening 6A for raising / lowering a worker and articles | goods without the horizontal frame 4 and the safety net 5 is formed.

  Further, a ladder 7 is constructed between the ground surface portion of the building 1 and the lift 6 </ b> A of the roof portion 2. The ladder 7 is used for conveying materials such as a solar panel 8 installed on the roof 2 and for lifting and lowering workers.

  FIG. 1 shows a state in which a solar panel 8 is laid on the roof 2 after the safety fence 6 is temporarily installed. These solar panels 8 are roofed via a transport jig 7 a provided on the ladder 7. It is transported to the part 2 and delivered to the worker, and then laid down vertically and horizontally by the worker's hand. Further, after the installation work is completed, the safety fence 6 is removed and diverted to another construction site.

  2 to 5, the column main body 10 of the column 3 is a rod-shaped column base 11 that is fixed to the roof frame 2 a in a sandwiched state, and a cylindrical shape that is detachably fixed to the top of the column base 11. A two-part structure with the upper column 12 is provided. In addition, the total height of the support | pillar 3 is set to the height about the chest of the worker who stands on the roof 2.

The column base 11 is a vertically long bar-shaped member having a substantially J-shaped or L-shaped lower end in a side view, and is welded to the upper surface of the distal end of the generally J-shaped or substantially L-shaped end of the column base 11 by welding all around. The integrated fixed clamper 16, the movable clamper 18 inserted into the outer periphery of the column base 11 so as to be movable up and down, and the guide arm 20 which is located above the movable clamper 18 and inserted into the outer periphery of the column base 11 so as to be movable up and down. And an adjusting screw 24 that is screwed into the screw hole 20b at the tip of the guide arm 20 and whose lower end is connected to a screw receiver 22 that is integrated at the center of the upper surface of the movable clamper 18 by all-around welding. I have. A grip 26 for rotating operation is provided at the upper end of the adjusting screw 24. A guide hole 20a is formed in the base of the guide arm 20 so that the support base 11 can be moved up and down.
Instead of the grip 26, a nut-shaped head that is rotated by being engaged with a tool may be provided.

  The fixed clamper 16 is fixed to the lower edge of the roof frame portion 2a. The fixed clamper 16 has a plate shape with a predetermined thickness, and a rising portion 16a having a substantially L-shaped cross section is formed at the top of the tip. Yes. The rising portion 16a engages with a step portion formed on the lower surface of the roof frame portion 2a (parapet).

  The movable clamper 18 is fixed to the upper edge of the roof frame portion 2a, and has a plate shape with a predetermined thickness. The lower end portions 18a and 18b having a substantially L-shaped cross-section are lowered in the front-rear direction. Is formed. The falling portions 18a and 18b are engaged with the front and rear surfaces of the upper surface of the roof frame portion 2a (parapet).

  As shown in FIG. 4, the column base 11 is substantially rectangular in plan view, and on both sides in the longitudinal direction, guide portions 11 a made of continuous grooves or ridges along the longitudinal direction are formed. Thus, the vertical movement of the movable clamper 18 and the guide arm 20 is smoothly guided.

  The upper portion 12 of the support column has a cylindrical pipe shape, and a lower end thereof includes a fitting portion 12a that is reduced in a rectangular shape provided with a groove or a ridge along the cross-sectional shape of the guide portion 11a. A support 28 made of a butterfly bolt is screwed through one of a plurality of insertion holes 11b arranged in the upper part of the joint portion 12a and the support base 11, and is connected to a nut 30 on the back side. And the column upper part 12 are connected. The support base 11 and the support upper part 12 are connected so as to be extendable.

The upper end of the upper column 12 is covered with a small cap 32 made of an elastic body made of rubber, resin or the like, and the vertical clamp part 34a of the two clamps 34 is integrally joined vertically below the cap. Has been. A horizontal clamp portion 34b is coupled to the outer wall of the vertical clamp portion 34a, and an end portion of a pipe material constituting the horizontal frame 4 is sandwiched and fixed to the horizontal clamp portion 34b. Each of the vertical clamp part 34a and the vertical clamp part 34b has a universal joint shape that can expand and contract in the radial direction, and is firmly joined by tightening with a bolt nut or a combination of a butterfly bolt and a nut in accordance with each pipe diameter. The
The column 3 and the horizontal frame 4 can be coupled by a wire or a cylindrical member fixed to the column 3. In this case, the above-described clamping tool is not necessary.

  The safety net 5 has a mesh shape with a predetermined mesh, and a plurality of attachment cords 5a are provided at a predetermined pitch on the four circumferences thereof as shown in FIGS. The attachment cord 5a is tied to the support column 3 and the horizontal frame 4. Further, the attachment to the roof frame portion 2a is, as shown in an enlarged view of a part of FIG. 5, a eggplant-shaped clip device 40 on the hook-shaped engagement piece portion 2b of the cover end made of a metal plate covering the roof frame portion 2a. If the D ring 40b provided in the upper part of the eggplant-shaped clip main body 40a of this clip tool 40 is tied to the attachment string 5a, the safety net 5 is the pillar 3, the horizontal frame 4, and the roof frame part 2a. It will be stretched in the constructed space.

  In addition, FIG. 5 shows the state which connected the support | pillar 3 to the girder side edge part of the roof frame part 2a of the roof part 2, and it made the roof part 2 into the downward slope slightly toward the eaves side from the ridge side. A roof material 50 made of a folded plate is provided, and an eave side end portion of the roof material 50 is covered with an eaves cover 52, and a drain drainage fitting 54 penetrates the roof frame portion 2a up and down in the lower part. Provided. A vertical gutter 54 communicating with the drainage fitting 54 is provided under the eaves.

  In the above configuration, in the state where the movable clamper 18 and the guide arm 20 are closest to each other, that is, in the state where most of the adjusting screw 24 is exposed on the upper side, the fixed clamper 16 is attached to the lower edge of the roof frame portion 2a. Then, the movable clamper 18 is lowered together with the guide arm 20 to the upper edge of the roof frame portion 2a. Thereafter, as shown by the arrow in FIG. 4, when the adjustment screw 24 is rotated while holding the grip 26, the movable clamper 18 is lowered according to the screw pitch, and the roof frame portion 2 a is sandwiched between the fixed gripper 1. Firmly fixed.

  Thereafter, the safety fence 6 is completed as shown in FIG. 1 by fixing the horizontal frame 4 between the columns 3 and performing the work of stretching the safety net 5. As a precaution in the mounting operation, the adjustment screw 24 is preliminarily set in order to avoid excessive protrusion on the edge of the eaves when the fixed clamper 16 is mounted and to make the mounting allowance by the adjustment screw 24 as large as possible. The column 3 is separated from the column main body 10 and the column upper part 12 in advance for maximum exposure on the upper side and weight reduction during handling. The upper part 12 can be joined.

FIGS. 6A and 6B show a second embodiment of the present invention.
In the second embodiment, a reinforcing column 66 is used instead of the column 3 used in the first embodiment.
A horizontal frame member 64 is provided in a substantially L shape at the lower end of the main body of the reinforcing column 66, and the folded plate-shaped roof member 60 is formed in a convex shape via a plurality of fixing members 62 provided at the lower part of the horizontal frame member 64. Fixed. A diagonal girder 68 is connected to the middle step of the reinforcing column 66 and the end of the horizontal frame member 64 to hold the reinforcing column 66 in a vertical state.
In this embodiment, although the number of parts for fixing the reinforcing column 66 is increased, the safety of the mounting operation can be further ensured without being stowed on the eaves at the time of mounting. Needless to say, after the reinforcement column 66 is attached, the horizontal frame is attached and the safety net is stretched. Further, the horizontal frame member 62 is not always necessary, and the base end portion of the oblique beam 8 can be directly fixed to the roof material shape.

  Furthermore, in each embodiment, the horizontal frame is one level and the safety net is stretched. However, the same applies to the case where only the horizontal frame is mounted in two or three stages, taking into consideration the load during material transportation and installation work. It can be selected as appropriate.

DESCRIPTION OF SYMBOLS 1 Building 2 Roof part 2a Roof frame part 2b Engagement piece part 3 Support | pillar 4 Horizontal frame 5 Safety net 5a Attaching string 6 Safety fence, 6A Lifting gate 7 Ladder 7a Carrying jig 8 Solar panel 10 Prop body 11 Prop base, 11a Guide 11b Insertion hole 12 Upper column 12a Fitting part 16 Fixed clamper 16a Rising part 18 Movable clampers 18a, 18b Falling part 20 Guide arm, 20a Guide hole, 20b Screw hole 22 Screw receiver 24 Adjusting screw tool 26 Grip 28 Fixing tool 30 Nut 32 Small cap 34 Clamping tool 34a Vertical clamping part 34b Horizontal clamping part 40 Clipping tool, 40a Clip body, 40b D ring 50 Roofing material 52 Eaves cover 54 Drainage bracket 56 Vertical gutter 60 Roofing material 62 Fixing member 64 Horizontal Frame material 66 Reinforcement support column 68 Girder

Claims (8)

A plurality of pillars that are detachably provided at predetermined intervals on a roof frame part around a flat roof part of the building, and a horizontal frame that is detachably provided so as to be spanned between adjacent pillars, The support column is fixed to the lower end of the support column body and engaged with the lower surface of the roof frame portion, a movable clamper that can be moved up and down along the support column body, and an upper portion of the movable clamper. A guide arm provided so as to be movable up and down along the main body, and an adjustment screw that is screwed into the tip of the guide arm and is coupled to the movable clamper so as to be relatively rotatable. A roof-top safety fence characterized in that the movable clamper is pushed downward to hold the upper and lower surfaces of the roof frame portion between the fixed clamper and the movable clamper and the column is fixed to the roof frame portion. The column has a lower end of the column body bent into a substantially L shape to a substantially J shape, the fixed clamper is fixed on the bent tip, and a rising portion is formed on the upper surface of the fixed clamper. The lower surface of the movable clamper is formed with a lowering portion, and the rising portion and the lowering portion are engaged with stepped portions on the upper and lower surfaces of the roof frame portion. Work safety fence on the roof. A guide hole into which the column main body is slidably inserted is formed at the base of the guide arm, and a screw hole into which the adjusting screw tool is screwed is formed at the tip of the guide arm, and the column main body The roof work safety fence according to claim 1 or 2, wherein a guide portion made of a groove or a ridge is formed along the longitudinal direction on the outer periphery of the roof. The column main body is composed of a column base and a cylindrical column upper part that is extrapolated to the upper part of the column base, and a fixture for fixing the column base and the column upper part is provided at the lower part of the column upper part. The roof-top safety fence according to any one of claims 1 to 3. A safety net is stretched between the columns, and a lower edge of the safety net and the roof frame part are coupled via a clip device that is engaged with an engagement piece provided on the roof frame part. The safety fence for roof work according to any one of claims 1 to 4. A clamp device for detachably coupling the support column body and the horizontal frame is provided, and the clamp device is fixed to the vertical clamp unit and the vertical clamp unit fixed to the support column body, and the horizontal frame is inserted and tightened. The roof-top work safety fence according to any one of claims 1 to 5, wherein the work safety fence is formed by a fixed horizontal clamp portion. Instead of the strut according to any one of claims 1 to 6, the reinforcing strut is used by using a reinforcing strut in which a horizontal frame member is fixed to the lower end of the strut and the strut and the front end portion of the horizontal frame member are coupled by a diagonal girder. A roof-top safety fence characterized in that a fixing member provided on the horizontal frame member is detachably fixed to a roof member constituting the flat roof portion of the building. The support | pillar used for the safety fence for roof work in any one of Claims 1 thru | or 6 WHEREIN: The said support | pillar is fixed to the lower end of a support | pillar main body, and the fixed clamper engaged with the lower surface of a roof frame part, and a support | pillar A movable clamper that can be moved up and down along the main body, a guide arm that is provided at the top of the movable clamper and that can be moved up and down along the column main body, and is screwed into the tip of the guide arm, A strut comprising an adjustment screw coupled to the movable clamper so as to be relatively rotatable, and the movable clamper is pushed in the direction of the fixed clamper by a screwing operation of the adjustment screw.

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