Fall prevention device for falling objects on scaffolding

Abstract

To provide an object fall prevention device for a scaffold having a gap shielding device capable of reliably shielding a narrow gap that is formed in a state that a falling object catcher is attached to the scaffold structure.SOLUTION: A shielding device (18) includes: a shielding member (19) movable in an advancing / retreating direction M with respect to an attachment base (17) of a base end of a falling object receiving device(4); and control means (20A) for guiding in the advancing / retreating direction M the shielding member (19) regulating not to move in a width direction L. The shielding device is configured to cover a gap (S) by moving the shielding member (19) in the advancing direction M1 from the attachment base (17).SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a device for receiving a falling object from a working space of a scaffolding structure at a construction site or the like toward an outside space when working at height in the working space, and preventing the danger of the object falling toward the ground. [Background technology]

[0002] When working at height in the work space of a scaffolding structure, there is a risk that tools, work equipment, and other items used by workers may accidentally fall toward the outside space outside the work space. Such falling objects may hit people passing by on the ground directly, resulting in personal injury.

[0003] Therefore, the present applicant has proposed a falling object receiving device called "Morning Glory" as described in Patent Document 1. This falling object receiving device is installed to protrude from the scaffolding construction toward the outer space, and is fixed in a position with its free end facing diagonally upward so as to easily receive fallen objects. In addition, soundproof sheets, soundproof panels, and other covering members may be selectively attached to the outer surface of the work space facing the outer space of the scaffolding construction for soundproofing, etc., depending on the site.

[0004] However, when work needs to be suspended due to bad weather, for example, the fallen object receiving device is in danger of being blown around by strong winds, so it is desirable to configure it so that it can be stored. For this reason, as in Patent Document 1, the fallen object receiving device is configured so that its base end is pivoted to the scaffolding structure via a horizontal shaft and its position can be changed between an operating position in which the free end protrudes toward the outside space and a stored position in which the free end faces upward and is superimposed on the vertical surface of the scaffolding structure.

[0005] However, because the fallen object receiving device is attached and fixed to the support pillars of the scaffolding structure via a bracket having a pivot structure, it is inevitable that a small gap will occur between the edge of the base end of the fallen object receiving device and the outer surface of the work space of the scaffolding structure, and if small items such as bolts, nuts, or screws fall, they may pass through the gap. As a result, the original purpose cannot be fully achieved.

[0006] For this reason, the applicant has proposed an invention in Patent Document 2 in which a shielding device having a shielding member for covering the gap is provided at the base end of the falling object receiving device. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 4658021 [Patent Document 2] Patent No. 5919408 Summary of the Invention [Problem to be solved by the invention]

[0008] According to the device proposed in Patent Document 2, any object that a worker accidentally drops into the outer space is received by the falling object receiving device while it is falling. At this time, the mounting base at the base end of the falling object receiving device is provided with a shielding member that covers the above-mentioned gap, so even small objects such as screws cannot pass through and can be received appropriately.

[0009] Furthermore, when not in use, the shielding member can be folded by rotating toward the mounting base at the base end of the falling object receiving device and stacked on top of the mounting base, making it convenient for storage and transportation.

[0010] However, in the embodiments of the invention in Patent Document 2, the shielding member is pivotally connected to the mounting base at the base end of the falling object receiving device by a hinge-type pivoting means, so there is still room for improvement from the standpoint of reducing production costs.

[0011] In the case of Patent Document 2, the shielding member is configured to be freely rotatable, which has the advantage that the gap can be covered simply by changing the angle at which the shielding member stands depending on the size of the gap. However, on the other hand, if the shielding member's standing position becomes close to a vertical position, there is a risk that it will be rotated toward the mounting base at the base end of the load receiving device and fall over when blown by wind, which means that there is a risk of the gap being opened up.

[0012] Therefore, an object of the present invention is to provide an apparatus that solves the above-mentioned problems by revising the invention proposed in Patent Document 2. [Means for solving the problem]

[0013] In order to solve the above problems, the present invention provides a method for: A scaffolding provided with a covering member selected from a sheet material and a panel material attached to an outer surface From the scaffolding that forms the working space to the outside space in an upwardly inclined posture The protruding falling object receiving device is provided with a flat plate portion facing the outer surface of the work space, and by configuring a shielding device with the flat plate portion as a mounting base, it is a device that prevents falling objects from falling by covering a gap (S) between the flat plate portion and the covering member. The gap (S) has a relationship of S2 < S1 between the gap when the covering member is a panel material and the gap (S1) when the covering member is a sheet material. On the other hand, the shielding device is configured to cover the gap corresponding to either the gap (S2) or (S1). At the base end of the falling object receiving device from the downwardly inclined mounting base The width direction L of the falling object receiving device and the falling object receiving device is With respect to a forward / backward direction M including a forward direction M1 toward the scaffolding structure and a backward direction M2 opposite thereto, the shielding device is provided with a shielding member that is movable in the forward / backward direction M with respect to the mounting base, and a control means that guides the shielding member in the forward / backward direction M while restricting the shielding member from moving in the width direction L, along the downwardly inclined upper surface of The mounting base together with an upwardly standing wall formed by bending at the tip edge of the shielding member, which abuts against and stops at the covering member, and is configured to form a V-shaped gutter by the standing wall It covers the gap (S) by moving in the forward direction M1.

Figure 1

[0014] In this case, it is preferable to provide a fixing and holding means for fixing the shielding member at any movement position in the advancing and retreating direction M so that the shielding member does not move.

[0015] It is also preferable that the shielding member be provided with a locking means for detachably locking the shielding member to the mounting base so that the shielding member is prevented from moving in the forward direction M1 when moved in the backward direction M2.

[0016] In a preferred embodiment, the shielding member is configured to overlap the mounting base without protruding from the mounting base when moved in the rearward direction M2.

[0017] More preferably, the shielding member has an upwardly bent upright wall at its tip edge, and when moved in the forward direction M1, it forms an extension portion that includes the upright wall and protrudes from the mounting base, and is configured to cover the gap (S) with the extension portion.

[0018] In an embodiment of the present invention, the shielding device includes a slot provided in the shielding member and extending in the forward / backward direction M, a bolt inserted into the slot and fixed to a predetermined position on the mounting base, and a nut that loosely fastens the shielding member and the mounting base to each other via the bolt. Thus, the slot and the bolt constitute the control means, and the bolt and the nut constitute the fixing and holding means. Effect of the Invention

[0019] According to the present invention, a shielding device 18 is provided that can cover the gap S formed between the outer surface X of the working space in the scaffolding construction 1 and the base end of the fallen object receiving device 4.

[0020] In this case, the shielding device 18 is configured so that the shielding member 19 is freely movable in the forward and backward direction M relative to the mounting base 17 at the base end of the falling object receiving device 4, and the shielding member 19 is moved in the forward direction M1 to cover the gap S. Therefore, even if gaps S1, S2 of different sizes exist depending on the site, it can be flexibly dealt with, and the gap can always be covered in a stable and suitable state. [Brief description of the drawings]

[0021]

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[0022] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] (Configuration of scaffolding structure and falling object receiving device) As shown in Figure 1, the scaffolding structure 1 is of a known configuration; although the illustration shows a frame scaffolding, it could also be a single-tube scaffolding or other scaffolding, and a work space is formed by arranging scaffolding boards 3 in upper and lower tiers on supports 2 extending in the vertical direction.

[0024] A panel-shaped fallen object receiving device 4 is provided at a high position on the scaffolding structure 1, protruding in an overhanging manner toward an outer space Y outside the outer surface X of the work space formed by the supports 2 and scaffolding boards 3.

[0025] The fallen object receiving device 4 is formed to have a width dimension W corresponding to the interval between the supports 2, 2 in the scaffolding construction 1, is connected along the outer side surface X of the work space, and is usually called a morning glory. Note that the fallen object receiving device 4 shown in the figure is formed in the shape of a rectangular panel in a plan view, but is formed in the shape of a triangular panel or the like at the corner portions of the scaffolding construction 1.

[0026] Each of the connected falling object receiving devices 4 is attached and used in a position (operating position) inclined upward from its base end to its free end so as to make it easier to receive objects falling from above. However, when work needs to be interrupted due to bad weather or the like, there is a risk of them being blown around by strong winds. Therefore, by rotating as shown by the arrow U in FIG. 1, the free end is moved in an upright direction, and the falling object receiving device 4 is stored in a position (storage position) superimposed on the outer surface X of the work space.

[0027] 2, the fallen object receiving device 4 is pivotally connected to upper pivot means 5 and lower pivot means 6 which are fixedly attached to the supports 2 of the scaffolding construction 1. That is, both ends in the width direction of the base end of the fallen object receiving device 4 are pivotally connected to the upper pivot means 5, and support means 7, 7 extending downward from both ends on the free end side of the fallen object receiving device 4 are pivotally connected to the lower pivot means 6.

[0028] 2 and 3, the base end of the fallen object receiving device 4 is constructed by protruding pivot pieces 9 from the base ends of side frames 8, 8 arranged on both sides in the width direction, and connecting the base ends of the side frames 8, 8 with a base frame 10. The base frame 10 is formed, for example, from an extruded aluminum material, and is provided with a flat plate portion 10a located between the pivot pieces 9, 9 and facing the outer surface X of the work space.

[0029] Therefore, the flat plate portion 10a is formed so that the gap S between the outer surface X of the working space of the scaffolding structure 1 and the base end of the fallen object receiving device 4 is as narrow as possible, but since the fallen object receiving device 4 is configured to be freely rotatable, the formation of a gap S as shown in the figure is unavoidable.

[0030] 3, the upper pivot means 5 is configured with a support bracket 13 having a fastening means 11 such as a clamp metal fitting at its upper part and a locking means 12 at its lower part, and a pivot 14 is provided on the support bracket 13. As shown in the figure, the fastening means 11 is detachably fixed to a predetermined position of the support column 2, and the locking means 12 is supported on the side of the support column 2 while being mounted on a beam material 2a fixed to the support column 2. The fallen object receiving device 14 is pivotally connected to the upper pivot means 5 by inserting the pivot 14 through the pivot piece 9.

[0031] In the illustrated example, the lower pivot means 6 has the same configuration as the upper pivot means 5, and is detachably fixed to a predetermined position of the support column 2 below the upper pivot means 5. The lower end of the support means 7 is pivotally connected to the lower pivot means 6. The support means 7 is composed of a telescopic rod as shown in the illustration, or another type of rod, and the upper end of the support means 7 is pivotally connected to the side frame 8 so as to be rotatable.

[0032] (Covering material) As described above, a covering member may be attached to the outer surface X of the working space of the scaffolding structure 1 depending on the site. The covering member may be a sheet material such as a soundproof sheet or a thick panel material such as a soundproof panel, and forms part of the scaffolding structure 1.

[0033] Therefore, naturally, as shown in Figure 3 (B), the gap S1 formed between the scaffolding structure 1 provided with the sheet material 15 and the base end of the drop receiving device 4 (the tip edge of the flat portion 10a) and the gap S2 formed between the scaffolding structure 1 provided with the panel material 16 and the base end of the drop receiving device 4 (the tip edge of the flat portion 10a) will be different in size, S1 > S2.

[0034] (shielding device) The present invention provides a shielding device 17 that can cover the gap S formed between the outer surface X of the work space in the scaffolding structure 1 and the base end of the fallen object receiving device 4 (in the illustrated embodiment, the tip edge of the flat portion 10a of the base frame 10), and in particular, is intended to be a device that can respond to changes in the size of the gap S as described above and always reliably seal the gap.

[0035] (First embodiment) Figures 4 to 8 show a first embodiment of the present invention. As shown in Figure 4, the falling object receiving device 4 forms a base end portion similar to that of the prior art described above based on Figures 2 and 3, and a flat plate portion 10a is extended from a base frame 10 that connects side frames 8, 8.

[0036] Therefore, in the first embodiment, the flat plate portion 10a forms the mounting base 17, and the shielding device 18 is provided on the mounting base 17. As shown in FIG.

[0037] The shielding device 18 is composed of a shielding member 19 which is attached in a stacked state on the upper surface of the mounting base 17, and a control means 20A and a fixing and holding means 20B which are provided on the mounting base 17 and the shielding member 19, respectively.

[0038] (Shielding material) As shown in Figures 5 to 7, with regard to the width direction L of the fallen object receiving device 4 and the forward and backward direction M which includes the forward direction M1 from the base end of the fallen object receiving device 4 toward the scaffolding structure 1 and the backward direction M2 in the opposite direction, the shielding member 19 is formed of a flat metal plate having a lower surface parallel to the upper surface of the mounting base 17 and is placed on the mounting base 17 so as to be freely movable in the forward and backward direction M, and in the illustrated embodiment, is placed on the mounting base 17 so as to be freely slidable.

[0039] Therefore, when the fallen object receiving device 4 is protruded in an obliquely upward position from the scaffolding structure 1 toward the outer space Y, the shielding member 19 slides under its own weight along the mounting base 17 which is in a downwardly inclined position, that is, it is configured to automatically move in the forward direction M1 toward the scaffolding structure 1.

[0040] Therefore, the shielding member 19 moves in the forward direction M1 to assume an forward posture as shown in Fig. 7(C). At this time, the shielding member 19 forms a protruding portion 19a by protruding an edge portion near the tip from the mounting base 17, and is configured so as to cover the above-mentioned gap S with the protruding portion 19a.

[0041] In this case, it is preferable that the tip edge of the shielding member 19 has an upwardly bent upright wall 19b, so that the protruding portion 19a not only covers the gap S as shown in Figure 8, but also forms a V-shaped gutter at the tip, making it possible to appropriately receive falling objects.

[0042] The tip position of the protruding portion 19a, that is, the protruding distance from the mounting base 17 to the tip (protruding amount of the protruding portion 19a), is determined by the moving distance of the shielding member 19 slid in the forward direction M1. Therefore, the protruding amount (protruding distance) can be changed steplessly by the sliding of the shielding member 19. At this time, the shielding member 19 always moves forward and backward along the same plane as the upper surface of the mounting base 17 to form the protruding portion 19a.

[0043] By moving in the retreating direction from the forward position, the shielding member 19 is set to the retreated position as shown in Fig. 7(B). At this time, the shielding member 19 does not protrude from the mounting base 17 but is placed on top of the mounting base 17. In other words, the edge portion near the tip of the shielding member 19 is stored on the mounting base 17 without forming the protruding portion 19a.

[0044] (Control means and fixing means) The shielding device 18 includes a slot 21 provided in the shielding member 19 and extending in the forward / backward direction M, a bolt 22 inserted into the slot 21 and fixed to a predetermined position on the mounting base 17, and a nut 23 that loosely fastens the shielding member 19 and the mounting base 17 to each other via the bolt 22.

[0045] Therefore, the slot 21 and the bolt 22 constitute a control means 20A that guides the shielding member 19 in the forward and backward direction M while restricting the shielding member 19 from moving in the width direction L.

[0046] The bolt 22 and nut 23 constitute a fixing means 20B that fixes the shielding member 19 so as not to move at any moving position in the advancing / retreating direction M. Therefore, the shielding member 19 is fixed in an immovable state by fastening the bolt 22 and the nut 23, and is made movable again by loosening the bolt 22 and the nut 23.

[0047] In the illustrated specific example, a nut 23 is fixed to the mounting base 17 by crimping or the like, located below a slot 21 provided in the shielding member 19, and a bolt 22 is inserted into the slot 21 from above the shielding member 19 and screwed into the nut 23 to fix it in that position.

[0048] However, the relationship between the nut and the bolt may be arranged in the opposite manner to that shown in the drawings. That is, the bolt may be erected so as to face upward from the mounting base 17, and the nut may be screwed onto the tip of the bolt with the bolt inserted into the slot.

[0049] In the illustrated example, the nut 23 is a cylindrical nut with a flange, and a pedestal 23a that is slightly elevated from the upper surface of the mounting base 17 is formed by fixing the flange to the upper surface of the mounting base 17. The pedestal 23a is made larger than the width of the slot 21, and therefore the shielding member 19 placed on the mounting base 17 is supported by the pedestal 23a, and a minute gap is formed between the lower surface of the shielding member 19 and the upper surface of the mounting base 17 in other parts. As a result, the shielding member 19 slides in contact only with the upper surface of the pedestal 23a, reducing frictional resistance, which makes it easy to automatically slide the shielding member 19 by its own weight when the mounting base 17 is in an inclined position.

[0050] In the illustrated configuration, the bolt 22 is a wing bolt, and is provided with a head 22a for pressing the shielding member 19 around the slot 21, and a knob 22b for manual operation.

[0051] (action) In the shielding device 18 configured as described above, by loosening the bolt 22, the shielding member 19 can be freely slid in the forward / backward direction M by a distance corresponding to the length of the slot 21, and by tightening the bolt 22, the shielding member 19 can be fixed at any sliding position so that it cannot slide.

[0052] At this time, the shielding member 19 moves in the forward direction M1 to form a protruding portion 19a that protrudes from the mounting base 17 and is positioned on the same plane as the upper surface of the mounting base 17. The protruding amount (protruding distance) of the protruding portion 19a can be changed while being adjusted steplessly within a range up to the maximum protruding position possible by the movement stroke allowed by the slot 21.

[0053] FIG. 8(A) shows a case where a sheet material 15 such as a soundproof sheet is provided on the outer surface X of the working space of the scaffolding structure 1, and FIG. 8(B) shows a case where a panel material 16 such as a soundproof panel is provided on the outer surface X of the working space of the scaffolding structure 1.

[0054] In either case of Figure 8(A) or Figure 8(B), the falling object receiving device 4 is pivotally connected to an upper pivot means 5 and a lower pivot means 6, as in the conventional technology described above, and is installed in a movable position in which it protrudes diagonally upward toward the outer space.

[0055] By loosening the bolt shaft 22 and releasing the fixing of the fixing holding means 20B, the shielding device 18 can automatically cover the gap S between the covering member 24 and the mounting base 17 when the fallen object receiving device 4 is installed and the mounting base 17 is in a predetermined inclined position. That is, even if the gap S1 shown in Fig. 8(A) and the gap S2 shown in Fig. 8(B) differ in size such that S1>S2, both gaps are suitably covered and no special work is required.

[0056] The shielding member 19, now in a slidable state, automatically moves in the forward direction M1 along the inclination of the mounting base 17, and stops when the upright wall 19b at the tip abuts against the covering member 24. As a result, the gaps S1 and S2 can be covered by the advancing portion 19a formed by the advancement of the shielding member 19.

[0057] 8(A) and 8(B), while the fallen object receiving device 4 is installed on the scaffolding construction 1 and in use, the bolts 22 may be tightened to fix the shielding member 19 with the fixing means 20B so that it cannot slide, but fixing is not particularly necessary. As long as the fallen object receiving device 4 is installed in a specified operating position, the shielding member 19 is biased in the forward direction M1 by its own weight, so there is no risk of it moving in the backward direction even if it is subjected to a strong wind or the like.

[0058] Moreover, since the shielding member 19 can only move back and forth on the same plane as the upper surface of the mounting base 17, there is no risk of it falling over when blown by a strong wind from its rotated upright position, as in the case of Patent Document 2 which uses a rotating method, and it can maintain a stable state.

[0059] When the fallen object receiving device 4 is removed from the scaffolding structure 1 for transport, storage, etc., the shielding member 19 is moved in the backward direction M2 and the entire device is stacked on top of the mounting base 17 to store it, and the shielding member 19 is fixed so that it cannot slide by the fixing and holding means 20B.

[0060] Second embodiment 9 and 10 show a second embodiment of the present invention, in which a shielding member 19 is provided with a locking means 20C that detachably locks to the mounting base 17 so as to prevent movement in the forward direction M1 when the shielding member 19 is moved in the backward direction M2 to be stored. Since the other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and the above description is incorporated herein by reference.

[0061] In the illustrated embodiment, the locking means 20C includes a locking portion 19c formed by bending downward an edge of the shielding member 19 facing in the backward direction M2, and a holding portion 19d bent in the forward direction M1 from the locking portion 19c, and is configured so that when the shielding member 19 is stacked on the mounting base 17 to be stored, the locking portion 19c is locked to the rear end edge 10e of the mounting base 17 (flat plate portion 10a), and the holding portion 19d holds the rear end edge 10e. Note that the holding portion 19d does not necessarily have to be provided.

[0062] In the second embodiment, the fixing and retaining means 20B consisting of the bolt 22 and nut 23 is tightened when it is necessary to fix the shielding member 19 at any position after it has been moved in the forward / backward direction M, but in other cases it may be left in a loose state.

[0063] In particular, as shown in Fig. 10(B), when the fallen object receiving device 4 is changed from an operating position in which the free end during use protrudes toward the outside space to a stored position in which the free end faces upward and is superimposed on the vertical surface of the scaffolding structure 1 upon cessation of use, the shielding member 19 stored by being superimposed on the mounting base 17 is fixed without sliding downward from the mounting base 17 by engaging the locking means 20C with the rear end edge 10e of the mounting base 17, so there is no need to fasten the bolt 22 and the nut 23. Therefore, in the case of the second embodiment, it is not necessary to provide the fixing and holding means 20B, and a simple configuration is possible.

[0064] When covering the gap S with the shielding device 18 while the falling object receiving device 4 is in the operating position, the shielding member 19 is moved in the forward direction M1 via the control means 20A with the engaging means 20C detached from the rear end edge 10e placed on the mounting base 17, as shown in Figure 10(A).

[0065] Third embodiment 11 shows a third embodiment of the present invention. In the third embodiment, the configuration of the base end of the falling object receiving device 4 is different from that of the first embodiment, but other configurations are similar to those of the first embodiment, so the same components are given the same reference numerals and the above description is incorporated herein.

[0066] In the third embodiment, a frame material formed with a U-shaped cross section is used for the base frame 10 connecting the base ends of the side frames 8, 8, and a flat plate portion 10b is formed by the upper plate-like portion, and the flat plate portion 10b is used as a mounting base 17 to provide a shielding device 18. The shielding device 18 is configured by a shielding member 19 attached in a stacked state to the upper surface of the mounting base 17, and a control means 20A and a fixing and holding means 20B provided between the mounting base 17 and the shielding member 19, as described in the first embodiment.

[0067] (Other embodiments) In all of the above-described embodiments, the mounting base 17 is formed from a part of the base frame 10, but it goes without saying that the present invention is not limited to such a configuration, and the mounting base 17 may be formed from a separate member provided on the base frame 10, or even from a member unrelated to the base frame 10. [Explanation of symbols]

[0068] 1. Scaffold Construct 2 pillars 2a Beam material 3 Scaffolding boards 4 Falling object receiving device 5 Upper pivoting means 6 Lower pivoting means 7 Support means 8 Side Frame 9 Pivot piece 10 Base Frame 10a, 10b flat plate part 10e Rear edge 11 Fixing means 12 Locking means 13 Support bracket 14 Axis 15 Sheet material 16 Panel material 17 Mounting base 18 Shielding device 19 Shielding material 19a Advancement Department 19b Standing wall 19c Locking part 19d Holding part 20A Control Means 20B Fixed holding means 20C Locking means 21 Slots 22 Bolt shaft 22a Head 22b Handle 23 Nut 23a Pedestal

Claims

1. A scaffolding comprising a scaffolding structure (1) forming a working space having a covering member selected from a sheet material (15) and a panel material (16) attached to its outer surface, and a fallen object receiving device (4) protruding in an upwardly inclined position toward the outer space from the scaffolding structure (1), A flat plate portion (10a) facing the outer surface of the working space is provided at the base end of the falling object receiving device (4), and the flat plate portion (10a) is used as a mounting base (17) to form a shielding device (18), thereby covering the gap (S) between the flat plate portion (10a) and the covering member, thereby preventing the falling of falling objects. The gap (S) is a gap (S2) when the covering member is a panel material (16) and a gap (S1) when the covering member is a sheet material (15), such that S2<S1, whereas the shielding device (18) is configured to cover the gap in response to either of the gaps (S2) and (S1); With respect to the width direction L of the fallen object receiving device (4) and the forward and backward directions M including the forward direction M1 of the mounting base (17) inclined downward from the fallen object receiving device (4) toward the scaffolding structure (1) and the backward direction M2 in the opposite direction, The shielding device (18) includes a shielding member (19) that is movable in a forward and backward direction M relative to the mounting base (17), and a control means (20A) that guides the shielding member (19) in the forward and backward direction M while restricting the shielding member (19) from moving in the width direction L, The shielding member (19) moves in a forward direction M1 along the downwardly inclined upper surface of the mounting base (17) to cover the gap (S), and The device for preventing falling objects from falling on scaffolding is characterized in that an upward standing wall (19b) formed by bending the tip edge of the shielding member (19) is abutted against the covering member and stopped there, and the standing wall (19b) forms a V-shaped gutter.

2. 2. A device for preventing falling objects from falling on a scaffold as claimed in claim 1, further comprising a fixing and holding means for fixing the shielding member so as not to move at any position in the forward and backward direction.

3. 3. A device for preventing falling objects from falling on a scaffold as described in claim 1 or 2, characterized in that the shielding member (19) is provided with a locking means (10e) for detachably locking to the mounting base (17) so that movement in the forward direction M1 is prevented when the shielding member (19) is moved in the backward direction M2.

4. A device for preventing falling objects from falling on a scaffold as described in claim 1, 2 or 3, characterized in that the shielding member (19) is configured so that when moved in the backward direction M2, it does not protrude from the mounting base (17) but is overlapped on the mounting base.

5. The device for preventing falling objects from falling on a scaffold as described in claim 1, 2, 3 or 4, characterized in that the shielding member (19) has an upwardly bent upright wall (19b) at its tip edge, and when moved in the forward direction M1, it forms an extension portion (19a) that includes the upright wall (19b) and protrudes from the mounting base (17), and is configured to cover the gap (S) with the extension portion (19a).

6. a slot (21) provided in the shielding member (19) and extending in the forward / backward direction M; a bolt (22) inserted into the slot and fixed to a predetermined position of the mounting base (17); and a nut (23) for loosely fastening the shielding member and the mounting base to each other via the bolt, 6. A device for preventing falling objects from falling onto a scaffold as claimed in claim 1, 2, 3, 4 or 5, characterized in that the slot and the bolt constitute the control means (20A).

7. a slot (21) provided in the shielding member (19) and extending in the forward / backward direction M; a bolt (22) inserted into the slot and fixed to a predetermined position of the mounting base (17); and a nut (23) for loosely fastening the shielding member and the mounting base to each other via the bolt, 3. A device for preventing falling objects from falling onto a scaffold as claimed in claim 2, characterized in that the fixing and retaining means (20B) is constituted by the bolt and nut.

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