JPH09235873A - Construction engineering of guardrail for working on roof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building engineering method capable of easily and speedily assembling a guardrail by work on the ground by using an inexpensive member and without causing any damage to a house. SOLUTION: An L shaped eaves receiver 3 is installed on an upper part support member 2. A support 1 is assembled by connecting an intermediate support member 16 to the upper part support member 2 and connecting a base support member 21 on the intermediate support member 16 through an expansion mechanism 29, and the eaves receiver 3 is made pressure contact with an eaves end surface of an eaves A of a house from below along an eaves back surface. Consequently, the support 1 is erected by bridging it between a ground surface B on which the base support member 21 is placed and the eaves A. A lateral stile 34 is suspended and fixed between the respective support members 2 of the adjoining two supports 1 by erecting a plural number of the supports 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the construction of a protective fence for roof work for preventing workers from accidentally falling or crashing when performing work such as roof reshuffling and repair of rain leaks. It is related to the construction method.

[0002]

2. Description of the Related Art Since a main scaffold is always constructed when a house is newly built, it is possible to safely perform work on the roof. On the other hand, when roofing is to be changed or rain leaks are to be repaired, workers on the roof can attach a lifeline or directly attach a protective fence to the eaves of the house to install it from the roof. It prevents them from falling or crashing. Alternatively, when a steeply sloping roof is to be reformed, the main scaffold is assembled as necessary, and the protective frame is attached to the pillar portion on the eaves of the main scaffold.

[0003]

However, when a lifeline is attached, the operation is restricted by the lifeline and the work cannot be performed freely due to the bad work conditions on the roof where the scaffolding is unstable. Will become worse and work efficiency will decrease. On the other hand, if the protective fence is directly attached to the eaves of the house, nail holes may be formed in the house, or part of the eaves may be damaged or damaged, which is not preferable.

Further, when assembling the main scaffold, the scaffold similar to that at the time of new construction is assembled only for performing the roof work, and the material cost and the transportation cost are relatively high and it takes time to assemble. , Costly.
Also, when assembling the main scaffold in a narrow space, a hoist is required, which further increases the cost. Moreover, the most problematic thing is that, in both cases of attaching the protective fence to the eaves and assembling the main scaffold, the worker must first climb the roof to work at a high place.

Therefore, the present invention uses an inexpensive member,
It is an object of the present invention to provide a method for constructing a protective fence for roof work that can be easily and quickly assembled by working on the ground and does not damage the house.

[0006]

In order to achieve the above object, the construction method for a protective fence for roof work according to the present invention is L
While connecting at least one intermediate strut member to the upper strut member that is fixed by protruding the eaves-shaped receiver in the shape of a side, by connecting the base strut member to the intermediate strut member via the expansion and contraction mechanism, The upper strut member, the intermediate strut member and the base strut member are assembled into a strut extending linearly, and the strut is erected with the base strut portion facing downward, and the strut is attached to the eaves of the house. While maintaining the opposing positioning state, by operating the elongating and contracting mechanism to extend, by pressing the eaves edge receiver from below along the eaves end face and the eaves back surface of the eaves, the column, the base column After standing upright between the base surface such as the ground on which the member is placed and the eaves, and standing up a plurality of the columns, between the upper column members of each of the two adjacent columns ,
Follow the procedure to bridge and fix the horizontal rail.

According to the present invention, the work of assembling the support by linearly connecting the upper support member, the intermediate support member and the base support member, the work of standing up the assembled support, and the base support member at the bottom of the support. The elongate operation of the elongating and contracting mechanism provided on the front of the eaves receiving member can be performed on the ground along the eaves end face and the eaves rear face of the eaves from below. That is, the pillar can be erected while standing between the base surface such as the ground and the eaves without any work at high places, and the pillar can be quickly erected by a safe and simple operation. . In the work of bridging the horizontal rail between each two adjacent columns, since multiple columns have already been erected,
You can work safely by holding the column even in high places.

Further, since the eaves-end support is simply pressed against the eaves-end, the house is not damaged by deformation or the like. Furthermore, since the support column is a pole that is assembled by connecting three types of support members such as pipes, it can be manufactured at a low material cost. Moreover, assembling and erection of the columns are extremely simple operations on the ground, so even a small number of workers can assemble them in a short time,
The cost is cheap.

In the above invention, an upper portion of a base support member having an external thread formed on an outer peripheral surface thereof is inserted into a lower end side opening of an intermediate support member made of a pipe so that the nut can be screwed into the external thread. By abutting against the opening surface of the intermediate strut member, the intermediate strut member and the base strut member are connected to each other so as to be able to expand and contract, and after the strut is erected, the nut is attached to the peripheral surface thereof. It is preferable to adopt a method of pushing up the intermediate strut member by the nut by rotating the operation handle protruding in a direction orthogonal to the base strut member from the above so as to be screwed upward.

As a result, since the expansion / contraction mechanism is formed as a screw jack by the male screw formed on the outer peripheral surface of the base column member and the nut screwed with the male screw, it is screwed upward with respect to the male screw by rotating the operating handle. Push up the intermediate strut member with the nut. Although the push-up speed due to the rotating operation of the operation handle is low, a large push-up force can be obtained, so that the column can be firmly fixed between the base surface and the eaves with a large tension force. Since the eaves bracket is attached to a required portion of the upper strut member according to the height of the eaves of the house on which the roof work is performed, the low push-up speed does not cause any trouble.

A preferable pillar used for constructing the protective fence for roof work according to the present invention is a pillar which is erected upright along the house and has a length extending above the eaves, and is provided at a predetermined position. A support member is fixed so as to project in an orthogonal direction, and an L-shaped eaves tip receiver is rotatably attached to a tip end portion of the support member, and an insertion means is provided at a lower end portion of the upper support member. At least one intermediate support member connected and a base plate placed on a base surface such as the ground are fixed to the lower end, and an upper end portion is connected to the lower end portion of the intermediate support member so as to be able to move in and out. A column member and an expansion / contraction mechanism attached to the base column member and operated to move the intermediate column member in the pull-out direction with respect to the base column member.

Thereby, the columns can be connected by a simple means for inserting the upper column member, the intermediate column member and the base column member into each other. Further, since the eaves-end receiver is rotatably attached to the support member fixed to the upper strut member, the eaves-end face of the eaves end is rotated and absorbed during pressure contact with respect to the difference or variation in the shape of the eaves end. Be sure to press it against the back of the eaves. Further, since the base support member is provided with the base plate for mounting on the base surface, the support can be erected in a stable state.

A horizontal rail holder for inserting and fixing a horizontal rail is fixed to the upper strut member, and an eaves-end holder attached to the upper strut member has an elastic force on its L-shaped inner surface. A contact member having adhesiveness and absorptivity is fixed, one end of a rod-shaped auxiliary member is rotatably connected to the upper strut member or the intermediate strut member, and is attached to the base plate of the base strut member. It is preferable that the fixing pile has an insertion hole formed therein.

As a result, since the abutting member fixed to the inner surface of the L-shaped eaves receiving member has elasticity and suction, the eaves receiving device is protected so as not to damage the eaves. However, the pressure is applied firmly, further increasing safety. Further, the auxiliary member rotatably connected to the intermediate strut member can be used to hold the strut so as not to fall when the connected strut is erected, and after the strut is erected, the auxiliary member It can also be used as a support rod to prevent falls. Further, if the fixing pile is driven into the base surface through the insertion hole provided in the base plate of the base support member, the upright support can be held more firmly. Further, since the horizontal rail can be inserted and fixed in the horizontal rail holder fixed to the upper support member, it can be easily and quickly bridged between the upper support members to be attached.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 to 6 show a method of constructing a protective fence for roof work according to an embodiment of the present invention in the order of steps, which will be described below.

FIGS. 1 and 2 show the procedure for assembling the support pillar 1. First, in FIG. 1, the eaves receiving member 3 is attached to a predetermined portion of the upper support member 2. The upper strut member 2 is made of a general pipe and has a plurality of screw holes 4 arranged at predetermined intervals. The eaves bracket 3 has an L-shape that can abut along the eaves end surface and the eaves back surface of the eaves of the house, and the inner surface of the L-shape has elasticity and adsorptivity. The contact member 7 made of rubber, for example, is attached.

A U-shaped connecting member 8 is fixed to the outer surface of the eaves receiving member 3 by welding. On the other hand, a support member 10 is fixed by welding to a mounting member 9 made of a pipe having a diameter that allows the upper strut member 2 to be inserted therethrough in such a manner that the supporting member 10 projects in a direction orthogonal to the mounting member 9. The connecting member 8 is externally fitted to the supporting member 10 and is attached to the tip end portion of the supporting member 10 by the bolt 11 and the nut 12 screwed to the bolt 11, but the nut 12 is not completely tightened, so that it is appropriate. It is configured to give a clamping force. That is, the eaves edge receiver 3 is attached via the connecting member 8 so as to be rotatable around the bolt 11 as a fulcrum and to be stopped at a predetermined angle position. Further, a fixing screw 13 is screwed to a predetermined portion of the mounting member 9.

Therefore, the upper support member 2 is attached to the mounting member 9.
And the fixing screw 13 is inserted through the upper support member 2
The eaves edge receiver 3 is attached to a required portion of the upper strut member 2 by matching and screwing the required screw holes 4 of the above. Here, the selection of the screw holes 4 is appropriately selected according to the height of the eaves of the house to be worked on the roof.

Subsequently, the support column 1 is assembled as shown in FIG. That is, the rod-shaped auxiliary member 17 is attached to the intermediate strut member 11, and the clamp metal fitting 18 is attached to the intermediate strut member 1.
6 is inserted and the fixing screw 18 is tightened, and then, the connecting shaft portion 20 fitted and fixed in the opening serving as the upper end when standing upright is inserted into the lower end opening of the upper strut member 2. The intermediate strut member 16 is connected to the upper strut member 2. Two intermediate support members 16 may be connected depending on the height of the house, but in this embodiment, only one support member is used.

Further, the upper end portion of the base support member 20 having the male screw 22 formed on the outer peripheral surface of the pipe is inserted into and removed from the lower end opening of the intermediate support member 16 and the nut 23 screwed to the male screw 20 is inserted. When the upper support member 2, the intermediate support member 16 and the base support member 21 are linearly connected to each other, the support pillar 1 is completed when brought into contact with the opening surface of the lower end of the middle support member 16. When assembling the support 1, the nut 23
Is positioned near the lower end of the base support member 23, and is assembled to the support 1 shorter than the required length. The above-described assembling work of the pillar 1 can be performed at a place on the ground where the pillar 1 should be erected. In addition, the pillar 1 is composed of three kinds of pillar members 2, 16 and
Since it is disassembled into 21 and handled, there is an advantage that it can be easily transported and easily assembled even in a narrow place.

Further, a base plate 24 made of a circular plate or a rectangular plate is fixed to the lower end of the base column member 21 by welding or the like, and the base plate 24 has an insertion hole for a fixing pile to be described later. A plurality of 28 are drilled. 2 for the nut 23
The book operation handle 27 is fixed to the base column member 21 in a position so as to project in the orthogonal direction. The male screw 22, the nut 23, and the intermediate strut member 9 constitute an expansion / contraction mechanism 29 that relatively expands / contracts the intermediate strut member 16 and the base strut member 21.

The pillar 1 assembled as described above is erected as shown in FIG. Since all of the columns 1 are formed by simply connecting the three types of column members 2, 16 and 21 each made of a pipe, two workers can easily erection them without using a hoist or the like. That is, the base plate 2
A worker (not shown) that presses 4 with his / her foot to support the base column member 21 and a worker WH who holds the upper part of the column 1 and pushes it up are sufficient. Here, one worker WH
As shown in the figure, the support 1 can be easily and safely erected in an extremely short time by pushing up the support 1 while holding the support 1 so that the support 1 does not fall down. In addition, in FIG. 3, the pillar 1 is arranged in a direction orthogonal to the house H as shown by the one-dot chain line and is raised from the state of being placed on the ground toward the house H as shown by the two-dot chain line,
The state of standing up is shown as indicated by the solid line. This is for convenience of illustration, and in practice, it is preferable to erect the pillars 1 placed in parallel with the house along the wall surface of the house.

Once the support column 1 is erected, one operator holds the support column 1 with the eaves receptacle 3 facing the eaves section A as shown in FIG. 3, and the other operator WH expands and contracts. The operation handle 27 of 29 rotates the nut 23 upward with respect to the male screw 22. Since the nut 23 pushes up the intermediate strut member 16, as shown in FIG. 4, the L-shaped eaves edge receiver 3 is pressed against the eaves edge A along the eaves end surface and the eaves rear surface.

Here, the eaves receiving tool 3 is the eaves A on the ground.
Although it is difficult to position the nut 12 so that the nut 12 is not completely tightened, the eaves edge receiver 3 rotates about the bolt 11 as the fulcrum as it is pressed against the eaves edge A, It is automatically displaced in the direction corresponding to the eaves A.

Further, the expansion / contraction mechanism 29 consisting of the male screw 22, the nut 23 and the intermediate strut member 16 is constructed as a screw jack, and the screw jack has a lower pushing speed as compared with a rack jack, but has a large load. Can be lifted and has the advantage of being cheap. That is, since a large pushing-up force can be obtained by the expansion and contraction mechanism 29, the support column 1 is firmly fixed by a large tension force generated between the eaves A and the base surface B such as the ground on which the support column 1 is erected.
Moreover, since the contact member 7 having elasticity and absorptivity is attached to the inner surface of the L-shaped eaves bracket 3, the eaves bracket 3
Is strongly pressed against the eaves edge A to further enhance safety and protects the eaves edge A from damage such as deformation. Further, since the eaves receptacle A is selected and attached with a required screw hole 4 of the upper strut member 2 in accordance with the height of the eaves A of the house H performing the roof work, the above-mentioned low push-up speed is a work. The time will not be long.

Note that, in FIG. 4, for convenience, the case where the support column 1 is erected vertically is shown, but in practice, it is preferable that the support column 1 is erected in a slightly inclined state toward the house H.
When the standing of the pillar 1 is completed, the fixing pile 30 is set to the position shown in FIG.
As indicated by an arrow, the base plate 24 is fixed to the base surface B by driving it into the base surface B through the insertion holes 28 of the base plate 24. If necessary, the reinforcing means shown by the chain double-dashed line in FIG. 3 can be used. That is, the auxiliary member 17 is used as a supporting rod for preventing the column 1 from collapsing by connecting the clamp member 31 to the auxiliary member 17 and driving the fixing pile 30 inserted through the clamp member 31 into the base surface B. May be. Further, the rope clamp 32 is attached to the upper strut member 2, and the support rope 33 having one end fixed to the wall surface of the house H is pulled through the rope clamp 32 to pull the strut 1 toward the house H to prevent it from falling. You may.

As shown in FIG. 6, the required number of columns 1 are erected by the same construction method as described above. All of the above-described steps up to the standing of the required number of columns 1 can be quickly performed by safe and simple work on the ground. Next, as shown in FIGS. 4 and 6, a horizontal rail 34 is bridged and fixed between two adjacent columns 1 on the roof, that is, between the upper column members 2. The mounting of the cross rail 34 is performed by climbing on the roof, but since a plurality of columns 1 are already installed upright, it is possible to work with the column 1 even at a high place, so that safety can be secured. . Moreover, the horizontal rail 34 can be easily and quickly attached by using the horizontal rail holder 37 as shown in FIG. Although illustration is omitted, it is preferable to stretch a safety net by utilizing the upper strut member 2 and the horizontal rail 34.

In the horizontal rail holder 37, a column clamp portion 38 and a horizontal rail clamp portion 39 are rotatably connected to each other by a stud bolt 40. Both clamps 3
8 and 39 are clamp pieces 38, which are each divided into two.
a, 38b, 39a, 39b are rotatably connected by a truncation portion 41, and one of the clamp pieces 38a,
A bolt 42 having a nut 43 screwed therein is attached to 39a so as to penetrate therethrough, and a notch 44 into which the bolt 42 is inserted is formed in each of the other clamp pieces 38b and 39b.

Therefore, first, the column clamp portion 38 is formed.
The clamp pieces 38a and 38b in the open state are closed and wound around the upper strut member 2, and at that time, the bolt 42 is inserted into the notch 44. Therefore, by tightening the nut 43 as it is, the strut clamp portion 38 is fixed to the upper strut member. It is fixed to the member 2. Next, after adjusting the horizontal rail clamp portion 39 to a predetermined direction by the stud bolt 40, the horizontal rail 34 is applied to one clamp piece and the other clamp piece 39b is closed. If the horizontal rail 34 is wound around the rail 34 and the nut 43 is tightened as it is, the horizontal rail 34 can be easily fixed to the upper column member 2 via the horizontal rail holder 37.

In the above embodiment, the case where the screw jack is used as the expansion / contraction mechanism 29 of the column 1 has been exemplified.
A jack structure using other gears or hydraulic pressure may be used, and a base strut member having a female screw formed on the inner peripheral surface of the lower end portion of the intermediate strut member and a male screw threaded to the female screw is formed on the base strut member. Alternatively, it may be rotatably connected to.

[0032]

As described above, according to the method of constructing a protective fence for roof work according to the present invention, the work of assembling the pillars by the three kinds of pillar members, the work of standing up the pillars, and the work of pressing the eaves receptacles against the eaves. Since all of the above can be done on the ground, it is possible to eliminate the conventional dangerous work at a high place, and to quickly and erect the pillar by a safe and easy work. In addition, since the eaves receiving device is only pressed against the eaves, it does not damage the house. Furthermore, since the pillar is assembled by connecting three kinds of pillar members, it can be manufactured at a low material cost, and the pillar can be assembled and set up in a short time by a small number of workers. Can be significantly reduced.

If the erecting mechanism comprising a screw jack is extended to press the eaves receiving member against the eaves, the supporting column is firmly fixed between the base surface and the eaves with a large tension force. be able to.

If the above-mentioned pillars are used for constructing the protection fence for roof work according to the present invention, the upper pillar member, the intermediate pillar member and the base pillar member can be quickly connected to each other by a simple means. By rotating the eaves receptacle according to the difference or variation in the shape of the eaves, the eaves end surface and the eaves rear surface of the eaves can be reliably pressed against each other. Furthermore, since it has a base plate for mounting on the base surface,
The columns can be set up more stably.

If an abutting member having elasticity and suction is provided on the inner surface of the L-shaped eaves receiving member, the eaves receiving member is pressed firmly while protecting the eaves receiving member from damage. It is possible, and safety is further enhanced. Further, if the auxiliary member rotatably connected to the intermediate strut member is provided, it is possible to hold the strut so that it does not fall when the strut is erected.

Further, if the base plate of the base support member is provided with an insertion hole, the fixing pile can be driven into the base surface to securely fix the base plate, so that the support can be erected more stably. .
Further, if the cross rail holder is provided, the cross rail can be attached easily and quickly.

[Brief description of drawings]

FIG. 1 is a perspective view of a process of attaching an eaves bracket to an upper strut member in a method of constructing a protective fence for roof work according to an embodiment of the present invention.

FIG. 2 is a side view showing a step of assembling the support column in the construction method of the above.

FIG. 3 is a side view showing the upright step of the columns in the construction method of the above.

FIG. 4 is a side view showing an upright structure of columns in the same construction method as above.

FIG. 5 is a perspective view showing a step of attaching a horizontal rail in the construction method of the above.

FIG. 6 is a front view showing a protective fence for roof work constructed by the above construction method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 support 2 upper support member 3 eaves receiving member 7 contact member 10 support member 16 intermediate support member 17 auxiliary member 21 base support member 22 male screw 23 nut 24 base plate 29 expansion mechanism 30 fixing pile 34 horizontal rail 37 horizontal rail Holder

Claims (1)

[Claims] 1. An at least one intermediate strut member is connected to an upper strut member having an L-shaped eaves tip support projecting laterally and fixed, and a base strut member is provided with a telescopic mechanism for the intermediate strut member. The upper strut member, the intermediate strut member and the base stand strut member are assembled in a straight line by assembling through the above, and the base stand strut is directed downward to stand up the strut, and the strut is supported by the eaves While holding the tool in a positioning state facing the eaves of the house, by operating the elongating and contracting mechanism to extend, the eaves receiving member is pressed from below along the eaves end surface and the eaves rear surface of the eaves, thereby supporting the pillar. Are erected so as to be stretched between a base surface such as the ground on which the base support member is placed and the eaves, and after a plurality of the supports are erected, they are respectively adjacent to each other.
A method for constructing a protective fence for roof work, characterized in that a horizontal rail is bridged and fixed between the upper pillar members of each of the pillars of the book.