JP5342276B2 - Leading handrail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a preceding handrail which is installable on a framework scaffold and does not cause problem even if used as a master rope after the installation. <P>SOLUTION: This preceding handrail includes handrail frames 10 each formed integrally of a pair of right and left vertical members 11 and a handrail for joining the upper ends of the right and left vertical members 11. The handrail frame 10 is joined to adjacent right and left erected frames 1 with a locking device 20 to be disconnected from each other. The preceding handrail is separably connected with fixing devices 30 and connecting devices 40. The locking device 20 has a hook part 21 which extends from the base end thereof welded to the vertical member 11 and is engaged with the lateral rod 3 of the erected frame 1 from above. The fixing device 30 has a holding part 31 which extends from the base end thereof welded to the vertical member 11, is positioned adjacent to the pier stud 2 of the erected frame 1 from the side, and holds the pier stud 2 in a wedge structure. The connecting device 40 has a joining part 42 which extends from the base end 41 thereof held by the vertical member 11, is joined to the pier stud 2 of a newly connected upper erected frame 1 from the side, and is joined to the pier stud 2 in a fixed structure. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a leading handrail, and more particularly to an improvement of a leading handrail provided in a frame scaffold.

  A work site for building a building, i.e., a building site, is often provided with a scaffold for work as a temporary facility, i.e., a work scaffold. For example, a handrail is provided for entering the framework scaffold, for example, for ensuring the safety of workers.

  In view of its function, the handrails provided in this framework scaffold are provided on the upper floor before the worker enters the upper floor, which is the floor on which the handrail is provided, that is, provided in advance. It is meaningful to be a leading handrail.

  There have been various proposals for the preceding handrail so far. Among them, for example, Patent Document 1 discloses a proposal for a preceding handrail to be assembled to a frame scaffold that constitutes a work scaffold.

  Incidentally, as disclosed in Patent Document 1, the frame scaffold forms a lower floor continuously on the left and right along the outer wall of the building, and the lower floor is formed along the outer wall of the building. A new building frame is built above the floor, that is, it is assembled to form an upper floor, which is a three-dimensional assembly.

  The leading handrail is a pedestal in the building frame, that is, left and right vertical members parallel to the left and right pedestals, a handrail connecting the upper ends of the left and right vertical members, and below this handrail and parallel to this handrail. On the other hand, it has a handrail frame formed integrally with an intermediate rail connected to an intermediate portion in the vertical direction of the left and right vertical members.

  And this handrail frame has a mounting bracket connected to the lower end portion of the vertical member at the lower end portion of the vertical member in the building frame, and a positioning bracket connected to the reed in the building frame in the middle in the vertical direction of the vertical member. The upper part connected to the lower end side part of the pedestal in the building frame newly built on the upper floor in the lower part of the handrail which is a part and slightly closer to the lower end part and is the upper end side part of the vertical member It has a fixture.

  Therefore, in the proposal disclosed in Patent Document 1, the worker lifts the handrail frame from the floor where he / she enters to the upper floor where a new building frame is not yet built, Under this condition, the positioning brackets are linked to the side and the handrail frame is temporarily stored in the building frame. From this state, the mounting bracket is connected to the pedestal so that the handrail frame is connected to the frame scaffolding and the preceding handrail is connected. It can be.

Then, the lower end side of pedestal in Kenwaku that Tatekoma newly to form an upper floor are connected the upper fixing fitting in the handrail frame, eventually leading handrail is provided above floor definitive framework scaffold.

Japanese Patent No. 2594530 (refer to claims 1, 1, 2, and 3)

  However, in the proposal disclosed in Patent Document 1 described above, in the framework scaffold forming the work scaffold, there is basically no problem in that a leading handrail can be provided from the lower floor to the upper floor. Considering the fact that the handrail is used, there is a further demand.

In other words, in the case of an ordinary handrail of the kind, if this is properly provided on the upper floor, the handrail in the preceding handrail becomes a lifeline parent line , that is, a lifeline, when performing various operations by a post-worker. As the experience point shows, it is used as a substitute for the hook .

In other words, workers who work at heights at construction sites use lifelines, but at this time, the tip of the lifeline whose proximal end is connected to the waist of the worker, etc. is attached to the master rope provided appropriately. , i.e., in the work scaffolding, it is coupled to the definitive the preceding handrail handrail.

  Based on this, not only the building frame that forms the work platform on the lower floor, but also the building that forms the work platform on the upper floor after being newly built in the building frame on the lower floor. It is preferable that the frame is firmly connected to the frame.

This invention was invented in view of the above circumstances, and its purpose is not only to enable installation on a frame scaffold, It is to provide a handrail that does not cause problems.

In order to achieve the above-described object, the structure of the preceding handrail according to the present invention has a handrail frame formed integrally with a pair of vertical members on the left and right and a handrail connecting the upper ends of the left and right vertical members. , in the prior handrail this handrail frame is formed by detachably connected by fasteners and coupling with the separably interlocking with the locking member close to Kenwaku become right, the locking member is the while being connected to the slightly lower end toward an intermediate portion of the vertical direction of the longitudinal member are interlocking in the horizontal rod in the Kenwaku, said fixture is pedestal in the Kenwaku while being connected to the lower end of the longitudinal member It is connected to an upper end portion closer together with the connector is connected to the lower end side portion above the pedestal to be newly connected to the pedestal while being held on the upper end side in the longitudinal member, the locking member is from the base end to be welded to the longitudinal member It has a hook portion which engages from above the horizontal rod in the Activity above Kenwaku, this together with the fixture to close the laterally pedestal in the Kenwaku extending from a proximal end to be welded to the longitudinal member have embraced portion to embracing the pillar under the wedge structure, laterally pedestal above the Kenwaku which the connector is the newly consolidated extends from the proximal end to be held in the longitudinal member And a connecting portion connected to the pedestal under a fixed structure, and the connecting portion has a front end side arc portion and a rear end side arc portion, and is C-shaped or semi-arc shaped in plan view. The front end side arc part has a basic shape and enables folding of the front end side arc part with respect to the rear end side arc part at an intermediate part of the arc formed by the front end side arc part and the rear end side arc part. to become a pivot point to prevent rotation relative to the rear side arc portion

  Therefore, when the preceding handrail of the present invention is provided on the frame scaffolding, the worker lifts the handrail frame from the floor where he / she enters to the upper floor where a new building frame has not yet been built. Under this condition, the locking tool can be engaged with the reed on the building frame.

Therefore, Thus, the handrail frame will be used so to speak temporarily deposited in Kenwaku, but makes it easier to coupling operation of the fastener by workers subsequent to be described later, this time, the locking member is next rod in Kenwaku Since it is engaged, movement in the lateral direction, which is the horizontal direction in which the building frame in the frame scaffolding is continuous, is prevented in a direction along the plane formed by the pair of vertical members and handrails, so to say, a reliable installation state Can be realized.
At this time, since the locking tool engages with the recumbent in the building frame from above, the handrail frame is connected to the frame scaffolding as compared with the case where it engages with the recumbent in the building frame, for example, from below. Make work easier.

  Then, when this handrail frame is put into the building frame, the fixing member is held by the pedestal in the building frame under the wedge structure under the condition that the handrail frame is once deposited. Similarly, the installation is prevented by preventing movement in the direction far from the wall surface of the building, which is the direction along the surface of the building frame, and lateral movement along the surface of the handrail frame. Enables the realization of the state.

In addition , a connecting tool is connected to the lower side of the pedestal in the building frame that is newly built at the upper end of the building frame that forms the upper floor to form the upper floor, so that the leading handrail can be securely attached to the frame scaffolding. Is provided.

  At this time, the connecting tool has a connecting portion adjacent to the upper pedestal that extends from the base end portion held by the vertical member and is newly connected, and the connecting portion is formed in a fixed structure. Lateral movement along the plane of the frame is prevented, and it is finally possible to firmly provide a leading handrail on the frame scaffolding. For example, the tip of a lifeline to which the base end is connected to the worker is attached to the handrail frame. Even if the handrail is connected instead of the parent rope, safety is guaranteed.

It is a schematic perspective view which shows the frame scaffold in the state in which the prior handrail by this invention was provided. It is a front view which shows the state which connected the handrail frame which comprises the prior | preceding handrail by this invention to the frame scaffold through the latching tool, the fixing tool, and the connection tool. It is a fragmentary perspective view which shows the arrangement | positioning state in the handrail frame of a locking tool, a fixing tool, and a connection tool. It is an expansion partial perspective view which shows a locking tool. It is an expansion partial perspective view which shows a fixing tool. It is an expansion partial perspective view which shows a coupling tool.

  Hereinafter, the present invention will be described on the basis of the illustrated embodiment. The preceding handrail according to the present invention is a work site for constructing a building, that is, a scaffold for work as a temporary facility provided at the building site, That is, it is provided in a framework scaffold that forms a work scaffold for workers to enter.

That is, first, as shown in FIG. 1, the frame scaffold has a building frame 1 generally formed in a gate shape, that is, a building frame 1 formed in a gate shape with a pillar 2 as a column and a horizontal beam 3 as a beam. Bracing 4 Furthermore, if necessary, it is connected under the use of the scaffolding plate 5 (see FIG. 2) and is constructed after the heeling, or the lower floor is formed continuously from side to side so as to follow the outer wall of the existing building A In addition, although not shown in FIG. 1, the building frame 1 is newly built above the building frame 1 forming the lower floor, that is, assembled, and the bracing 4 and the scaffold board 5 are also used. The upper floor is formed, so to speak, it is assembled in three dimensions.

By the way, the work scaffold is also formed by a single pipe scaffold (not shown) other than the above-mentioned frame scaffold, but in this single pipe scaffold, the column material is formed by a vertical pipe. If it is considered to be the pedestal 2 in 1, and the beam material is formed by a horizontal pipe, if this horizontal pipe is considered to be the horizontal fence 3 in the building frame 1, it is possible to provide the leading handrail according to the present invention. That is, the preceding handrail of the present invention can be used not only for the frame scaffold illustrated but also for the single pipe scaffold.

Incidentally, in the framework scaffolding, so to speak by the Kenwaku 1 comprising left and right connecting braces 4 and anchorage plate 5, in the direction of alignment Kenwaku 1 between a pair of Kenwaku 1,1 aligned, i.e. The fall to the horizontal direction which becomes the right and left which is the direction along the outer wall of the building A is prevented.

Note that the disposed the braces 4 in the framework scaffolding, becomes an important factor in the establishment of the framework scaffolding, in view of the actual leading handrail of the invention is provided in the framework scaffolding, as will be described later, this prior handrail Can be said to perform the same function as the bracing 4 described above, and in that case, there is an advantage that the bracing 4 can be removed from the surface having the preceding handrail in the frame scaffold.

Moreover, in the frame scaffold shown in the figure, the lower floor is directly erected on the ground (not shown), so that each building frame 1 has a reference height above the foundation span girder B laid on the ground. The lower end portions of the building frames 1 that are erected under the jack base J that enables the height adjustment of the building frame and that are aligned in the left-right direction are integrally connected by a root tangle pipe P, so-called left - right direction. positional deviation of is prevented.

  Next, FIG. 2 shows a state in which the leading handrail according to the present invention is provided on the frame scaffold, that is, in a connected state. However, the illustration shows the outer wall of the building A from the outside of the work scaffold composed of the frame scaffold. The front view of the preceding handrail used as a line of sight to be seen is shown, and therefore the horizontal fence 3 in the building frame 1 is hidden behind the pedestal 2 in the building frame 1 in the drawing.

  Accordingly, the preceding handrail will be described with reference to FIG. 2. The preceding handrail is connected to the adjacent building frames 1 and 1 with the handrail frame 10 on the left and right sides so as to be separable by the locking tools 20 and 20. At the same time, it is connected to the fixing scaffolds 30 and 30 and the couplers 40 and 40 so as to be separable, and is provided in the frame scaffold.

  That is, the handrail frame 10 includes a pair of vertical members 11, 11 on the left and right sides, a handrail 12 that connects the upper ends of the left and right vertical members 11, 11, and a lower side of the handrail 12, in parallel with the handrail 12. It is formed integrally with an intermediate rail 13 connected to an intermediate portion in the vertical direction of the left and right vertical shafts 11, 11, and a worker M (see FIG. 1) holds and holds the handrail 12. In addition, the worker M can grasp and lift the lower end portion of the downarm 11 (see FIG. 1).

  Incidentally, the vertical member 11, the handrail 12 and the intermediate rail 13 which form the handrail frame 10 are made of, for example, a round pipe made of an aluminum material. However, according to the intention of the present invention, an aluminum material is used. Of course, it may be made of a square pipe, and it is of course not disturbed to be made of iron instead of aluminum.

  The handrail frame 10 shown in the figure has a crosspiece member, that is, a lower crosspiece 14 connected to the lower end portion of the vertical member 11 so as to be parallel to the above-described middle crosspiece 13. However, the arrangement of the lower rail 14 and the connecting material 15 may be omitted.

  However, when the lower rail 14 and the connecting material 15 are provided, not only the mechanical strength of the handrail frame 10 is increased, but also the worker M grips and lifts the lower end portion of the handrail frame 10. There is an advantage that the so-called gripping portion is increased and workability is improved.

  In addition, the handrail frame 10 shown in the figure has a toe plate 16, but in a work scaffold composed of a frame scaffold of the kind, the scaffold plate 5 is installed on the horizontal fence 3 in the left and right building frames 1. In addition, a so-called scaffold for the worker M is formed, and a toe plate 16 that prevents a tool or the like from dropping downward from the scaffold is normally provided.

  Thus, in the illustrated embodiment, the handrail frame 10 has the toe plate 16. However, the toe plate 16 is not a constituent element in the formation of the preceding handrail of the present invention. .

  Incidentally, although the structure of the toe plate 16 is shown, the left and right portions are welded to the left and right vertical members 11 in the handrail frame 10, but can be separated by using other connection structures such as brackets. It may be constructed on the left and right vertical members 11 under a simple connecting structure, or on the horizontal fence 3 in the building frame 1.

The toe plate 16 has a gap closing plate that undulates on the inner surface, which is the back side of the plate portion, which is the main body, although not shown in the figure, and by defeating the gap closing plate, the scaffold plate 5 and the toe The gap that appears between the board 16 is closed, and this gap prevents the occurrence of accidents such as an operator dropping his / her foot into the gap, and also prevents objects from falling through the gap. It becomes effective security measures or safety measures .

On the other hand, it will handrail 12 in the handrail frame 10 described above but, in the preceding handrail of the present invention, this is when fixedly provided on the framework scaffolding, the handrail 12 is connected to the worker M as described above As shown by the experience side, the lifeline R (see FIG. 1) to be used as a substitute for the masterline is a substitute for the parent line.

  As a substitute for this master rope, in principle, the handrail 12 may be positioned in a plane formed by the longitudinal member 11 and the intermediate rail 13, but as shown in FIG. When the slider 17 for connecting the lifeline R connected to the worker M is interposed in the handrail 12, the slider 17 freely reciprocates, that is, between the handrails 12 in the handrail frame 10 provided adjacently. It is desirable to be able to walk around.

  Considering that the slider 17 walks between the adjacent handrails 12, the handrail 12 is not positioned in the plane formed by the longitudinal member 11 and the intermediate rail 13, and the upper end portion of the longitudinal member 11 Is bent into the work scaffold and positioned in the work scaffold composed of the frame scaffold, that is, in the position shown in FIG. It is preferable not to interfere with one pedestal 2.

  As described above, in the handrail frame 10, the handrail 12 is used as a master rope to which the lifeline R is hooked. The slider described above is connected to the upper end of the vertical member 11. The handrail 12 is composed of a so-called bend-free horizontal ridge so as to enable 17 interposition and smooth movement in the lateral direction.

  And about connecting the handrail 12 which consists of this horizontal rod without the bending to the upper end of the vertical member 11, the upper end part of the vertical member 11 is flattened and shaped, that is, it is crushed into a thin wall smaller than the outer diameter of the horizontal rod. It is shaped so that the slider 17 can smoothly move to the handrail 12 in the lateral direction, that is, the handrail frame 10 provided adjacently without receiving the interference of the upper end portion of the vertical member 11.

Therefore, the joint portion between the handrail 12 and the upper end portion of the vertical member 11 that is flattened into a flat shape becomes a so-called stopper portion when an annular coupler such as a carabiner is connected to the handrail 12, for example, a pipe body is bent. Thus, in comparison with a handrail frame in which handrails and vertical members are formed in series, it is possible to avoid the inconvenience of the annular coupler such as the carabiner falling along the vertical member 11.

  Next, the locking tool 20, the fixing tool 30, and the connecting tool 40 included in the handrail frame 10 will be described below. However, the locking tool 20 is connected to the reed 3 in the building frame 1, and the fixing tool 30. And the connection state to the pedestal 2 in the building frame 1 of the connection tool 40 becomes the external appearance shown in FIG. 3 when viewed from outside the work scaffold.

  In other words, as can be seen from FIG. 3, the locking tool 20 is in the middle of the vertical member 11 of the handrail frame 10 in the vertical direction, and is connected to the lower end of the vertical frame 11 while being integrally connected. It is connected to the reed 3 in a separable manner.

The fixing tool 30 is connected to the lower end portion of the vertical member 11 in the handrail frame 10 so as to be separable to the upper end portion of the pedestal 2 in the building frame 1, and the connecting tool 40 is connected to the handrail frame 10. The vertical member 11 is detachably connected to the lower end side portion of the upper pedestal 2 so as to be newly connected to the lower pedestal 2 while being held upright on the upper end side.

  Thus, the locking tool 20 is positioned in the work scaffold, so that the fixing tool 30 and the connecting tool 40 are positioned along the pedestal 2 in the building frame 1. It is positioned in the plane formed by the left and right pedestals 1.

  In addition, by this, when the present position of the handrail 12 is externally viewed, there is no problem that the handrail frame 10 protrudes into the work scaffold, and the bracing 4 is arranged in a state along the handrail frame 10. It becomes possible to set.

Under the premise as described above, first, as shown in FIG. 4, the locking tool 20 extends from the base end welded to the vertical member 11 of the handrail frame 10 and extends from above to the horizontal frame 3 of the building frame 1. The hook portion 21 has a hook-like shape that engages with the hook portion 21, and the hook portion 21 engages with the hook 3 so as to wrap almost half or more from above. Is prevented from moving in the direction along the plane of the handrail frame 10 formed by the pair of vertical members 11 and the handrail 12, that is, in the lateral direction indicated by the arrow X in the drawing.

  Since the locking member 20 has a hook portion 21 formed in a hook shape and engages with the horizontal hook 3, the longitudinal member 11 for continuously connecting the locking member 20 is along the surface of the handrail frame 10. However, the positioning metal fitting (4) disclosed in Patent Document 1 does not have a so-called hook-like portion like the hook portion 21 described above.

  Therefore, in the positioning metal fitting (4), the same effect as that of the locking tool 20 in the present invention cannot be obtained. Therefore, the vertical member has a surface in the handrail frame in the direction indicated by the arrow X. Movement along the direction cannot be prevented, and the leading handrail cannot be firmly connected to the frame scaffold.

  On the other hand, in the preceding handrail of the present invention, when this is connected to the frame scaffolding, as described above, the hook portion 21 formed in the hook shape in the locking tool 20 is formed on the horizontal fence 3 in the building frame 1. Since the vertical member 11 is engaged from above, the vertical member 11 can be prevented from moving in the lateral direction along the surface of the handrail frame 10, and the preceding handrail can be firmly connected to the frame scaffold.

In addition, since said latching tool 20 engages with the horizontal bar 3 in the building frame 1 from above, in order to avoid competition with the locking tool 20 on the opposite side on the horizontal bar 3 , Although not, it is connected to the vertical member 11 in a state shifted in the horizontal direction.

Next, as shown in FIG. 5, the fixture 30 has a holding portion 31 that extends from the base end welded to the longitudinal member 11 and is adjacent to the pedestal 2 in the building frame 1 in the lateral direction from the work scaffold. And this holding part 31 holds the pedestal 2 in the building frame 1 in a state of wrapping almost half or more from the lateral direction .

And, in this fixing member 30 has a wedge 32 which protrudes into the opening of the holder-part 31 (not Shimese marks), the wedge 32 is embraced portion 31 by embracing the pedestal 2 In the state of being, it opposes said opening part and prevents that the pedestal 2 pulls out from the holding part 31, ie, prevents the holding part 31 from separating from the pedestal 2 .

At this time, the front end portion (not shown) of the wedge 32 is in close contact with the outer periphery of the pedestal 2, and the rear end side penetrates the wedge hole 31 a formed in the holding portion 31 and closely contacts the inside of the wedge hole 31 a. Thus, rattling in the holding portion 31 of the pedestal 2 is prevented.

Incidentally, the wedge 32, since the bent portions 32a of the forming at the tip portion can not pass through the aforementioned wedge hole 31a, which will not be separated from the fixture 30.

Therefore, in this fixture 30, when this is connected to the pedestal 2 in the building frame 1, the surface in the building frame 1 formed by a pair of pedestal 2 and recumbent 3 that are so-called front and rear. , That is, movement in a direction perpendicular to or substantially perpendicular to the outer wall of the building A indicated by an arrow Y in the drawing is prevented.

In this regard, the mounting bracket (3) disclosed in Patent Document 1 does not have the wedge 32, so that the mounting bracket (3) wraps the pedestal in the building frame from the lateral direction. Even if it is held in a state where it is held in, the movement in the direction indicated by the arrow Y is not completely prevented, and so-called play occurs between the handrail frame and the building frame .

Framework Consequently, in the mounting bracket disclosed in Patent Document 1 (3), it can not be prevented from moving in a direction in which the longitudinal member which definitive the handrail frame is perspective to the outer wall of the building A, the preceding handrail in solid state Cannot be linked to the scaffold.

On the other hand, in the leading handrail of the present invention, when this is connected to the frame scaffolding, as described above, the fixture 30 is against the holding portion 31 that holds the pedestal 2 in the building frame 1. The wedge 32 can be driven to prevent the vertical member 11 from moving in the direction of approaching the outer wall of the building A, and the handrail frame 10, that is, the preceding handrail can be firmly connected to the building frame 1, that is, the frame scaffold.

  In addition, since said fixing tool 30 connects with the pedestal 2 in the building frame 1, in order to avoid competition with the fixing tool 30 on the opposite side in the pedestal 2, the state shifted in the up-down direction Is connected to the vertical member 11.

  Further, as shown in FIG. 6, the connector 40 is an upper floor that is newly connected to the building frame 1 that extends from the base end portion 41 that is pivotally held by the longitudinal member 11 and forms the lower floor. The building frame 1 includes a connecting portion 42 that is adjacent to the pedestal 2 from the lateral direction and enables the pedestal 2 to be connected under a fixed structure.

  That is, the connecting portion 42 has a C-shaped (or semicircular arc) basic shape when seen in a plan view, and has a pivoting portion 42a at the middle portion of the arc so that it can be folded. Has been.

That is, as shown in a virtual diagram in FIG. 6 , the front end side arc portion 43 is rotatable with respect to the rear end side arc portion 44 via the above-described pivoting portion 42a, and the pivoting portion 42a is fixed. When functioning as a portion, rotation of the distal end side arc portion 43 is prevented.

At this time, it is sufficient that the pivoting portion 42a can select whether or not the tip side arc portion 43 can be rotated as a result. However , although not shown in detail in the present invention, it is configured in a key structure. Has been.

  A vertical pin (not shown) constituting the key structure can prevent rotation by making the cross-sectional shape of the upper part rectangular and allow the rotation of the lower part by making the cross-sectional shape circular.

  Therefore, in the pivot portion 42a having the vertical pin, when the vertical pin is raised, the so-called folding of the connecting portion 42 becomes possible, and when the vertical pin is maintained in the lowered state as shown in the figure, The connecting portion 42 can be maintained in a folded state, or can be maintained in a molded state that is a so-called use state.

On the other hand, the base end portion 41 is formed in a bifurcated bracket shape that holds the pedestal 2 from the lateral direction, and is pivotally attached by using a pin 45 penetrating the pedestal 2 in the lateral direction. Makes it possible to make ups and downs.

That is, the connecting tool 40 is not necessary when the handrail frame 10 is connected to the building frame 1 that forms the work scaffold on the lower floor, that is, it is unnecessary at the beginning, and the building frame 1 that forms the work scaffold on the upper floor after dredging. In view of the fact that it is not used until it is built in the lower building frame 1, the base end portion 41 has a stopper 41 a made of a protrusion so as to be held upright by the vertical member 11.

  Incidentally, the distance between the pair of stoppers 41a made of the protrusions is set to be the same as or slightly smaller than the outer diameter of the longitudinal member 11.

  Therefore, in the connecting tool 40 formed as described above, the connecting portion 42 is adjacent to the pedestal 2 in the building frame 1 from the lateral direction and is connected to the pedestal 2 under the fixed structure. The material 11 is prevented from moving in the direction along the plane of the handrail frame 10 formed by the vertical material 11 and the handrail 12, that is, in the direction indicated by the arrow X in the drawing.

On the other hand, in the upper fixing bracket (5) disclosed in Patent Document 1 described above, the basic shape of a C shape (or a semicircular arc shape) in a plan view as in the connector 40 according to the present invention. The upper fixing bracket (5) cannot embed the pedestal in the building frame from the lateral direction so that the movement in the direction indicated by the arrow X is complete. Is not blocked, and so-called play occurs between the pedestal 2 and the vertical member 11, that is, between the handrail frame 10 and the building frame 1 .

However, in the connector 40 according to the present invention, as described above, the vertical member 11 has the connecting portion 42 having a C-shaped (or semicircular arc) basic shape in plan view. Since it cannot move in the lateral direction along the wall surface of A, the handrail frame 10, that is, the preceding handrail can be firmly connected to the frame scaffold.

  In addition, even if it exists in the above-mentioned connecting tool 40, since this connects with the pedestal 2 in the building frame 1, in order to avoid the competition with the connecting tool 30 of the so-called opposite side in the pedestal 2, it is fixed as described above. Similar to the tool 30, it is connected to the longitudinal member 11 in a state shifted in the vertical direction.

In the handrail frame 10 of formed as described above, prior handrail on the occasion of providing the framework scaffolding, not Tatekoma are still new Kenwaku from it were lower floor worker M is intrusive that speak Allows to be lifted towards the upper floor.

  At this time, in many cases, as shown in FIG. 1, the worker M lifts the handrail frame 10 so as to grasp the lower end portion of the vertical member 11, but the handrail frame 10 illustrated in FIG. Since the lower rail 14, the connecting material 15, and the toe plate 16 are formed so as to be sturdy, the handrail frame 10 is not bent unnecessarily during the lifting operation, and workability is not deteriorated.

  And in the handrail frame 10 lifted to a predetermined height position, it can be temporarily stored in the building frame 1 by engaging the latching tool 20 with the horizontal frame 3 in the building frame 1. And improve workability after dredging.

  When the handrail frame 10 is once deposited in the building frame 1, the worker M can prepare his / her posture without taking his / her hand off the handrail frame 10, and works for safety. You can continue.

  Moreover, since the handrail frame 10 can be connected to the pedestal 2 in the building frame 1 in a state where the handrail frame 10 is once deposited in the building frame 1, the connecting work of the fixing device 30 can be reliably executed, Connection of the handrail frame 10 to the pedestal 2 in the building frame 1 by the fixing tool 30 is ensured.

  And by connecting the connecting tool 40 under the fixed structure to the lower end side part of the pillar 2 in the building frame 1 newly built at the upper end of the building frame 1 that forms the lower floor to form the upper floor, Finally, the preceding handrail is firmly provided on the frame scaffold. For example, even if the front end of the lifeline R whose base end is connected to the worker M is connected using the handrail 12 in the handrail frame 10 instead of the master rope, the safety is ensured. Is guaranteed.

  By the way, with respect to the provision of the handrail according to the present invention in the frame scaffolding, in the handrail frame 10 shown in the figure, the worker M who is in the work scaffolding inside the frame scaffolding according to the structure of the fixture 30 performs the work. It is possible to connect the handrail frame 10 from the scaffolding while making it close to the frame scaffolding.

  That is, as described above, the holding portion 31 in the fixing tool 30 of the illustrated embodiment is connected so that the pedestal 2 in the building frame 1 is approached from the side in the work scaffold so as to wrap almost half of it. Is done.

  Therefore, in the handrail frame 10 in which the fixing tool 30 having the holding portion 31 is connected to the vertical member 11, even if this is approached to the pedestal 2 in the building frame 1 from the outside of the frame scaffold, The holding part 31 cannot be held so as to wrap the pedestal 2, that is, the vertical member 11 in the handrail frame 10 cannot be connected to the pedestal 2 in the building frame 1.

  This means that when the preceding handrail according to the present invention is provided in the frame scaffold, the handrail frame 10 is not protruded from the frame scaffold before being brought close to the frame scaffold.

  That is, when the handrail frame 10 is once protruded outside the frame scaffold when the preceding handrail is provided on the frame scaffold, the handrail frame 10 protruding outside the frame scaffold is separated from the hand of the worker M. Therefore, it is necessary to connect the rope for preventing the fall to the handrail frame 10 in order to avoid the occurrence of the trouble of falling.

  Therefore, there is a problem that it takes time and labor to connect the rope for preventing the fall to the handrail frame 10 and time and labor to remove the rope after dredging, and the locking tool 20 of the handrail frame 10 is attached to the building frame 1. There is a risk that the above-mentioned ropes cannot be removed from the handrail frame 10 and the workability is deteriorated until the state in which they are engaged with the recumbage 3 and once deposited is revealed.

  Accordingly, in the preceding handrail of the present invention, as described above, the handrail frame 10 can approach the frame scaffold from the work scaffold as the frame scaffold. No work is required to connect to the cable, and workability is not reduced.

  Incidentally, in the handrail frame 10 according to the present invention, it can be said that it can be connected to the frame scaffold even if the so-called reverse side is reversed. In addition, since the fixing tool 30 is made to approach the pedestal 2 in the building frame 1 from the outside of the frame scaffold, there is a disadvantage that the connection of the above-mentioned class to the handrail frame 10 is essential.

  As described above, in the illustrated handrail frame 10, when the handrail 12 is eccentric so as to protrude into the work scaffold from the surface formed by the middle rail 13 and the connecting material 14 as the lower rail. If the handrail frame 10 is turned upside down and connected to the frame scaffolding, there is a problem that the handrail 12 cannot be set in place of the master rope.

  In view of the above, in the preceding handrail according to the present invention, it is optimal that the handrail frame 10 is connected to the frame scaffold from within the framework scaffold as the work scaffold. There is an advantage that the workability can be improved without fear of falling off the work platform.

  It is suitable for improving the workability when the handrail is provided on the frame scaffold.

DESCRIPTION OF SYMBOLS 1 Building frame 2 Pillar 3 Recumbent 4 Bracing 5 Scaffolding board 10 Handrail frame 11 Vertical member 12 Handrail 13 Middle rail 14 Lower rail 15 Connecting material 16 Toe plate 17 Slider 20 Locking tool 21 Hook part 30 Fixing tool 40 Connecting tool A Building B Girder J Jack base M Worker R Lifeline

Claims (11)

It has a handrail frame that is integrally formed with a pair of vertical members on the left and right and a handrail that connects the upper ends of the left and right vertical members, and the handrail frame is left and right and locked to a neighboring building frame In the preceding handrail, which is connected in a separable manner with a tool and separably connected with a fixing tool and a connecting tool,
It said locking member is cooperative next rod in the Kenwaku while being connected to the slightly lower end toward an intermediate portion in the vertical direction in the side member, while said fixture is connected to the lower end of the vertical member above is connected to the upper end side of the pedestal in Kenwaku, together with the connector is connected to the lower end side portion above the pedestal to be newly connected to the pedestal while being held on the upper end side in the longitudinal members ,
Extends from the proximal end which the fastener is welded to the longitudinal member has a hook portion which engages from above the horizontal rod in the Kenwaku, extends from the proximal end of said fastener is welded to the longitudinal member have embraced portion to embracing the pillar under the wedge structure as well as close to the laterally pedestal in the Kenwaku Te, the extends from the proximal end of the connector is held in said longitudinal member It has a connecting part that is adjacent to the pedestal in the upper building frame to be newly connected from the lateral direction and is connected to this pedestal under the fixed structure ,
The connecting portion has a tip-side arc portion and a rear-end-side arc portion, and has a C-shaped or semi-arc-shaped basic shape in plan view, and is formed by the tip-side arc portion and the rear-end-side arc portion. A pivoting portion for enabling the front end side arc portion to be folded with respect to the rear end side arc portion and preventing the front end side arc portion from rotating with respect to the rear end side arc portion. A leading handrail characterized by Together with the Kenwaku is more aligned in the direction along the outer wall of the building while positioned in a direction to intersect the outer wall surface of the axial line building surface formed by the longitudinal member and the transverse rod of the above and Neighboring Kenwaku each other are connected under the use of braces to form a framework scaffold, prior handrail of claim 1, wherein the handrail frame is coupled to the framework scaffolding. Preceding claim 1 or claim 2 comprising a Chu桟connected to an intermediate portion of the vertical direction of the left and right longitudinal member while the handrail frame parallel with the handrail In the below the handrail handrail. And Chu桟which the handrail frame can be connected to an intermediate portion of the vertical direction of the longitudinal member of the left and right while parallel with the handrail and disposed below the handrail, in the lower side of the Chu桟juxtaposed in this Chu桟a beam member having both ends while is connected to the lower end of the longitudinal member is, claim 1 comprising and a connecting member for connecting the the crosspiece member and the in crosspiece, claim 2 or claim 3 The leading handrail. Prior handrail according to the handrail frame according to claim 1 comprising a toe board opposite ends in the longitudinal member of the left and right is continuously provided, according to claim 2, claim 3 or claim 4. Gap the handrail frame at both ends in the longitudinal member of the left and right has a toe board that is continuously provided, the toe plate appears between the scaffolding board and the handrail frame which is laid laterally rod in the Kenwaku a gap closing plate that closes the claim 1, the gap closing plate is formed by undulations coupled to said toe board, according to claim 2, the preceding handrail according to claim 3 or claim 4. Billing the handrail in the handrail frame is movably coupled to the distal end of the lifeline to be connected to the operator the base end, or that is interposed movably slider linking the tip of the umbilical linking the base end to the operator The preceding handrail according to claim 1 , claim 2, claim 3, claim 4, claim 5, or claim 6 . Claim 1 the upper end of the vertical member said handrail is coupled to the horizontal rod with consisting horizontal rod in the handrail frame is formed by shaping crushed into smaller becomes thinner than the outside diameter of the horizontal rod, according to claim 2, The preceding handrail according to claim 3, claim 4, claim 5, claim 6 or claim 7 . The said latching tool has a hook part which extends from the base end welded to the said vertical member, and engages with the horizontal wall in the said building frame from upper direction , Claim 2, Claim 3, Claim 3 The preceding handrail according to claim 4, claim 5, claim 6, claim 7 or claim 8 . The said fixture is extended from the base end welded to the said vertical member, and has a holding part which adjoins the pedestal in the said building frame in the horizontal direction , Claim 2, Claim 3, Claim 3 The preceding handrail according to claim 4, claim 5, claim 6, claim 7, claim 8 or claim 9 . Interlocking portions where the connector are linked to the fixed structure under and close laterally in the pedestal in Kenwaku newly connected to the construction frame extends from the proximal end to be held by being pivotally attached to the longitudinal member The preceding handrail according to claim 1 , claim 2, claim 3, claim 4, claim 5, claim 6, claim 7, claim 8, claim 9, or claim 10 .

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