JP2013060732A - Fall prevention device for falling objects in scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fall prevention device for falling objects in a scaffold, which comprises a gap shielding device capable of surely closing a narrow gap which is formed in the state where a falling object receiving device is mounted in a scaffold construction body.SOLUTION: A gap shielding device (20) comprises a fixed member (21) which is fixed to a proximal end of a falling object receiving device (4) mounted in a scaffold construction body, and a shield member (23) which is connected freely rotatably to the fixed member via pivot means (22). The shield member (23) is configured to close the gap (S) by being erected at an angle θ from the fixed member (21) toward the scaffold construction body (1) via the pivot means (22) in the state where the falling object receiving device (4) is turned to an operable attitude, to change the angle θ while following up an attitude change when the attitude of the falling object receiving device (4) is changed, and to be automatically folded such that the shield member (23) overlaps the fixed member (21), while following a storage attitude when the falling object receiving device (4) is turned to the storage attitude in an erected state.

Description

The present invention, when performing a work in a high place in the work space of the scaffold structure in a construction site or the like, when the fallen object falls from the work space toward the outer space, the fallen object is received and dropped toward the ground. The present invention relates to a device for preventing the risk of the failure.

When working at a high place in the work space of the scaffold structure, tools, work equipment, and other items used by the worker may fall accidentally toward the outer space outside the work space. . Such a fallen object has a danger of hitting the person who comes and goes on the ground, and may cause a personal injury.

For this reason, the present applicant has proposed a fallen object receiving device called morning glory as described in Patent Document 1. This fallen object receiving device protrudes from the scaffold structure toward the outer space, and is fixed in a posture in which the free end is obliquely upward so as to easily receive the fallen object.

By the way, for example, when it is necessary to interrupt work such as bad weather, the fallen object receiving device has a risk of being hit by a strong wind. For this reason, as in Patent Document 1, the fallen object receiving apparatus has an operating posture in which the base end portion is pivotally connected to the scaffold structure via the horizontal axis and the free end portion protrudes toward the outer space, and the free posture The posture can be changed between the storage posture superimposed on the vertical surface of the scaffold structure with the end portion facing upward.

In addition, a covering member such as a sheet, a curing frame, and a soundproof panel may be selectively attached to the outer surface of the work space facing the outer space of the scaffold structure, depending on the site. For this reason, as in Patent Document 1, the base position of the fallen object receiving device can be attached to a scaffold structure by changing the attachment position at a position selected from a plurality of positions toward the outer space. It is comprised so that it may become.

JP 2008-115644 A

According to the fallen object receiving device proposed by Patent Document 1, when an operator accidentally drops an article into the outer space, the fallen object is preferably received by the fallen object receiving apparatus provided during the fall. It is possible to prevent accidents such as traffic accidents.

However, the fallen object receiving apparatus has a structure in which the fallen object receiving apparatus is fixedly attached to a support column of the scaffold structure via a bracket having a pivoting structure. It is inevitable that a narrow gap is formed between the outer surfaces of the space. For this reason, for example, if a small article such as a bolt, nut, or screw falls, it may fall toward the ground by passing through the gap, and in the case of a falling object such as a metal, it is a minute article. But there is a risk of injury to the human body.

In addition, as described above, the falling object receiving device is configured to be selectively changeable between the operating posture and the retracted posture, so that the falling material receiving device in the operating posture is provided with a plate material that closes the gap. In the case of a simple configuration to be provided, when changing the posture of the falling object receiving device to the retracted posture, it is difficult to change the posture, for example, it is necessary to remove the plate material.

Furthermore, as described above, the falling object receiving apparatus is configured to be able to change the attachment position, and the narrow gap formed when the proximal end is attached to the closest position to the scaffold structure is If the attachment position is changed with the base end of the fallen object receiving device attached to a position away from the scaffold construction body, the gap is enlarged, so that the gap is always suitably closed in response to such a change in the gap. What is needed is an apparatus that can do this.

The present invention provides an apparatus capable of suitably shielding a gap having a risk of passing through a fallen object as described above, and in particular, the fallen object receiving apparatus is changed in posture or attached position. Accordingly, it is an object of the present invention to provide an apparatus that can always reliably shield a gap by following the change even when the gap is enlarged or reduced.

Therefore, in order to solve the above problems, the present invention is configured as a first means in which a work space is formed by a scaffold construction body provided with scaffolding plates in upper and lower layers, and from the scaffold construction body to the outside of the work space. A falling object receiving device that protrudes toward the space is provided, and the falling object receiving device is pivotally coupled to the scaffold construction body via a horizontal axis with the free end portion facing the outer space. In the configuration in which the posture can be changed between the projecting operating posture and the retracted posture close to the scaffold construction with the free end facing upward, the base end of the fallen object receiving device and the scaffold construction A gap shielding device is provided to cover a gap formed therebetween, the gap shielding device being fixed to a base end portion of the falling object receiving device, and rotatable to the fixing member via a pivot means. A shielding member connected to the When the object receiving apparatus is in an operating posture, the gap is covered by standing at an angle θ from the fixing member toward the scaffold structure via the pivoting means, and the posture of the falling object receiving apparatus is changed. The angle θ can be changed following the posture change.

Further, the present invention is configured as a second means in which a work space is formed by a scaffold construction body provided with scaffolding plates in upper and lower layers, and a drop projecting from the scaffold construction body toward the outer space of the work space. An object receiving device, wherein the falling object receiving device has a base end portion pivotally connected to the scaffold structure via a horizontal axis and a free end portion protruding toward the outer space; The position can be changed between the retracted position close to the scaffold structure with the free end facing upward, and the mounting position can be changed by selectively attaching the horizontal axis to the outer space. In a possible configuration, a gap shielding device is provided that covers a gap formed between a base end portion of the fallen object receiving device and the scaffold structure, and the gap shielding device is provided at the base end of the fallen object receiving device. Fixing member fixed to the part and the fixing A shielding member that is pivotally connected to the material via a pivoting means, and the shielding member is in a state in which the falling object receiving device is in an operating posture, and is fixed from the fixed member via the pivoting means. The gap (S) is covered by changing the angle θ following the change of the mounting position when the mounting position of the falling object receiving device is changed. It is in the point which is comprised so that it may cover.

In a preferred embodiment of the present invention, the gap shielding device constitutes a unit in which a fixing member and a shielding member are connected and integrated by a pivoting means, and the fixing member is connected to an existing fallen object receiving device. Detachable attachment means that can be retrofitted is provided.

At this time, when a plurality of units in which the fixing member and the shielding member are overlapped with each other via the pivoting means are stacked vertically in a parallel posture, the shielding members of the upper and lower adjacent units are arranged at a predetermined interval from each other. A spacer member that protrudes from one surface of the upper and lower surfaces of the shielding member is provided so as to protrude, and a head of a fixing tool that secures the spacer member to the shielding member is provided on the other surface. It is preferable that the protrusion is provided so that a fitting recess is formed on the protruding surface of the spacer member at a position corresponding to the head of the fixing tool. As a result, the heads of the fasteners protruding from the shielding member of one unit are fitted into the fitting recesses of the spacer member provided on the shielding member of the other unit in the units adjacent to each other in the stacked state. Configured.

According to the first aspect of the present invention, in the gap shielding device 20, the shielding member 23 is rotatable by the pivoting means 22 with respect to the fixing member 21 fixed to the base end portion of the falling object receiving device 4. Since the rotation standing angle θ can be changed to an arbitrary angle, when the falling object receiving device 4 is in the operating posture, the shielding member 23 is fixed from the fixing member 21 to the scaffold structure. 1 is set up at a predetermined angle θ, and the gap S between the outer surface X of the work space and the fallen object receiving device 4 is preferably blocked to prevent the fallen object receiving device 4 from passing. In the case of changing the attitude toward the position, the shielding member 23 is preferably folded by changing the angle θ freely following such an attitude change, and the attitude of the falling object receiving device 4 can be changed. To.

According to the second aspect of the present invention, even when the gap shielding device 20 changes the size of the gap S by changing the mounting position with respect to the direction in which the falling object receiving device 4 faces the outer space, By following the change of the mounting position and freely changing the angle θ of the shielding member 23, the gap S is always closed from above and the passage of falling objects is prevented, thereby ensuring the intended safety. Secure.

According to the third aspect of the present invention, since the gap shielding device 20 configured as the unit 20a can be retrofitted to the existing fallen object receiving device 4, it is possible to provide a device that meets the needs of field users. Become.

According to the present invention described in claim 4, there is an advantage that the operation of stacking the units 20a is facilitated and the collapse from the stacked state can be prevented.

It is a perspective view which shows one example of the scaffold construction body which provided the falling object receiving apparatus. It is an enlarged view of the fallen object receiving device, (A) is a perspective view showing the whole, (B) is a perspective view showing an enlarged pivoted portion. FIG. 6 shows the operation of changing the posture of the falling object receiving device and changing the mounting position, (A) is a side view showing a state in which the falling object receiving device is mounted at the first mounting position, and (B) is falling. It is a side view which shows the state which attached the thing receiving apparatus to the 2nd attachment position. It is a perspective view showing one embodiment of a crevice shielding device concerning the present invention. It is a perspective view shown in the state which decomposed | disassembled the 1st attachment means of the attachment / detachment attachment means, the fixing member, and the shielding member regarding 1 embodiment of the clearance gap shielding apparatus which concerns on this invention. It is a perspective view shown in the state which decomposed | disassembled the 2nd attachment means of the attachment / detachment attachment means, the fixing member, and the shielding member regarding 1 embodiment of the clearance gap shielding apparatus which concerns on this invention. The operation | movement of the said 1st attachment means is shown, (A) is a top view which shows the state before attachment, (B) is a top view which shows the state under attachment operation | work. The operation | movement of the said 2nd attachment means is shown, (A) is a top view which shows the state before attachment, (B) is a top view which shows the state after attachment. It is a top view which shows the state which attached the clearance gap shielding apparatus which concerns on this invention with respect to the fallen object receiving apparatus with which the scaffold construction body was equipped, and overlapped the shielding member on the fixing member. The operation of the gap shielding device concerning one embodiment of the present invention is shown, (A) is a side view showing the operation of the gap shielding device in the state where the falling object receiving device is in the operating posture, and (B) is the falling object reception. It is a side view which shows the effect | action of the clearance shielding apparatus in the state which set the apparatus to the retracted position. It is a side view which shows the unit of the laminated | stacked clearance shielding apparatus in a partial cross section.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(Configuration of scaffold structure and falling object receiving device)
As shown in FIG. 1, the scaffold construction body 1 has a known structure, and in the illustrated example, a framework scaffold is shown. However, a single-tube scaffold or other scaffolds may be used. Thus, a work space is formed by providing the scaffolding plates 3 in a vertical hierarchy.

At a high position of the scaffold construction 1, a panel-like fallen object receiving projecting out toward the outer space Y outside the outer surface X of the work space formed by the support column 2 and the scaffold plate 3. A device 4 is provided.

The fallen object receiving device 4 is formed in a size corresponding to the interval span L between the support columns 2 and 2 in the scaffold structure 1 and is continuously provided along the outer side surface X of the work space. Yes. The fallen object receiving device 4 shown in the figure is formed in a rectangular panel shape in plan view, but is formed in a triangular panel shape or the like in the corner portion of the scaffold structure 1.

Each of the fallen object receiving devices 4 connected in series is inclined upward (referred to as an “operating attitude” in the present invention) from the base end part toward the free end part so as to easily receive fallen objects falling from above. However, if it is necessary to interrupt the work due to bad weather, etc., there is a danger of being hit by a strong wind. Therefore, by rotating as shown by the arrow U in FIG. The falling object receiving device 4 is stored in a posture (referred to as “storage posture” in the present invention) in which the falling object receiving device 4 is superimposed on the outer surface X of the work space. Therefore, as shown in FIG. 2, pivotable upper pivot means 5 and 5 are provided at both ends of the base end portion of the fallen object receiving device 4, and the upper pivot means 5 is used as a column of the scaffold construction 1. 2 is fixedly attached. Further, support means 6, 6 extending downward from both ends on the free end side of the falling object receiving device 4 are rotatably provided, and a lower pivot means provided rotatably at the tip of the support means 6. 7 is fixedly attached to the column 2 of the scaffold structure 1.

As shown in FIG. 2B, the upper pivoting means 5 includes a pivot piece 8 projecting from the side frame 4a of the fallen object receiving device 4, and a horizontal shaft member 9 such as a bolt on the pivot piece 8. The support bracket 10 is pivotally connected to the support column 10, and the support bracket 10 is detachably fixed to a desired portion of the column 2 by fixing means 11 such as a clamp fitting as shown in the figure.

The support means 6 is composed of a telescopic rod such as a telescopic type as shown in the figure, and the upper end of the support means 6 is pivotally connected to the side frame 4a and pivotally connected to the lower end. The lower pivoting means 7 is provided with a fixing means similar to the fixing means 11 and is detachably fixed to a desired portion of the column 2 below the upper pivoting means 5.

As shown in FIG. 2, an auxiliary plate 11 facing the outer side surface X of the work space is provided between the pivot pieces 8, 8 provided on the side frames 4 a, 4 a of the falling object receiving device 4. An opening 12 formed by an L-shaped piece of a metal fitting extending from the pivot piece 8 is opened upward between the both end edges of the auxiliary plate 11 and the pivot piece 8, and the auxiliary plate 11 side edges 11a are notched so as to extend from the opening 12 toward the outer surface X.

With such an auxiliary plate 11, the gap S between the outer surface X of the work space of the scaffold construction 1 and the base end portion of the fallen object receiving device 4 is formed to be as narrow as possible. Since the article receiving device 4 is configured to be rotatable, the formation of the gap S as shown in FIG. 2A is inevitable.

(Attitude change mechanism)
As a result, the fallen object receiving device 4 can be rotated in the vertical direction with the horizontal shaft member 9 of the upper pivot means 5 as a fulcrum, and the support means 6 is rotated and expanded and contracted following the rotation. Thus, an operating posture in which the above-mentioned free end portion protrudes obliquely upward toward the outer space Y, and a retracted posture in which the free end portion is superimposed on the outer surface X of the work space in the upright direction. The posture can be changed between the two.

For this reason, as shown in FIG. 3A, the fallen object receiving device 4 forms a gap S1 between the outer surface X of the work space and the auxiliary plate 11 while being held in the operating posture P1. When the posture is changed to the retracted posture that is substantially upright, the tip of the auxiliary plate 11 is rotated downward, and the gap S1, the distance between the scaffold construction body 1 and the auxiliary plate 11 are changed.

(Mounting position change mechanism)
As described above, a covering member such as a sheet, a curing frame, and a soundproof panel may be selectively attached to the outer side surface X of the work space of the scaffold construction 1 depending on the site. For this reason, the support bracket 10 constituting the upper pivot means 5 of the falling object receiving device 4 has a plurality of pivot holes 9a and 9b provided at a plurality of positions toward the outer space as shown in FIG. The mounting position of the falling object receiving device 4 can be changed by selecting the pivot position of the horizontal shaft member 9 from the pivot holes 9a and 9b.

FIG. 3A shows the attachment position of the fallen object receiving device 4 when, for example, no covering member is provided on the outer surface X of the work space or when an extremely thin covering member such as a sheet is provided. In this case, the first pivot support hole 9a closer to the outer surface X is selected, and the pivot piece 8 is pivoted by inserting the horizontal shaft member 9 into the first pivot support hole 9a. The gap S1 formed between the outer side surface X of the auxiliary plate 11 and the auxiliary plate 11 is narrow.

On the other hand, FIG. 3B shows the attachment position of the fallen object receiving device 4 in the case where a thick covering member such as a curing frame or a soundproof panel is provided. In this case, the second pivot support hole 9b far from the outer surface X is selected, and the pivot piece 8 is pivoted by inserting the horizontal shaft member 9 into the second pivot support hole 9b. An enlarged gap S <b> 2 is formed between the outer side surface X and the auxiliary plate 11.

(Gap shielding device)
The present invention covers the gap S formed between the outer surface X of the work space in the scaffold construction 1 and the base end portion of the fallen object receiving device 4 (in the illustrated embodiment, the front end edge of the auxiliary plate 11). In particular, the gap shielding device 20 can be provided. In particular, even when the gap S changes due to the posture change or the attachment position change of the fallen object receiving device 4 as described above, by following it, it is always ensured. It is aimed at a device that can close the gap.

In one embodiment shown in FIG. 4, the gap shielding device 20 includes a fixing member 21 that is detachably fixed to a base end portion (specifically, the auxiliary plate 11) of the falling object receiving device 4, and the fixing member 21. And a shielding member 23 that is pivotably connected via a pivoting means 22 to form a unit 20a.

The fixing member 21 is formed of, for example, a metal plate having a size and shape that overlaps with the upper surface of the auxiliary plate 11 and is positioned at both ends, and the fixing member 21 is overlapped with the auxiliary plate 11. The mounting plates 24a and 24b facing the opening 12 are fixed, the first mounting plate 24a is provided with the first mounting means 25a, and the other mounting plate 24b is provided with the second mounting means 25b. Yes. Note that the mounting plates 24a and 24b may be fixed in a state where they are overlapped on the upper surfaces of both ends of the fixing member 21, or conversely, may be fixed in a state where they are overlapped on the lower surface.

On the other hand, the shielding member 23 receives the fallen object corresponding to the interval between the upper pivoting means 5 and 5 so as to completely cover the gap S for each unit of the fallen object receiving device 4. It is formed by a metal plate having a length over the entire width of the device 4.

The gap shielding device 20 of the present invention may be configured by attaching and fixing the fixing member 21 to the base end portion of the fallen object receiving device 4 in advance, but the unit 20a that can be retrofitted to the existing fallen object receiving device 4 4 shows a state when the gap shielding device 20 as the folded unit 20a is packed or stored, and other states when not in use.

The gap shielding device 20 as the unit 20a includes a plurality of shielding members 23 that are arranged on the fixing member 21 at intervals in the longitudinal direction in a state where the shielding members 23 are overlapped so that their side edge portions overlap each other. As shown by an arrow in the figure, the shield member 23 is pivoted by a pivot means 22 composed of a hinge so that the shield member 23 can be turned upright in the reverse direction.

The unit 20a in which the shielding member 23 is superimposed on the fixing member 21 is folded upward on the side edge of the fixing member 21 located below the shielding member 23 so that both the members 21 and 23 are held in a parallel posture. A bent retaining rib 26 is formed. In the case of the illustrated example, an upward rib 27 is formed on the side edge on the opposite side of the fixing member 21, and a downward edge rib 28 is formed on the side edge on the free end side of the shielding member 23. 21 and the strength of the shielding member 23 are improved. A spacer member 29 described later is provided on the upper surface of the shielding member 23.

As shown in FIGS. 4 and 5, the first mounting means 25 a is provided with a downward first pin 30 on a tongue piece protruding from one end edge of the fixing member 21, and one end portion of the fixing member 21. A locking claw 31 bent in a downwardly folded manner toward the extending direction of the upward rib 27 is provided on a tongue piece portion that protrudes outward from a notch portion of the upward rib 27 located at the center.

As shown in FIGS. 4 and 6, the second mounting means 25 b is provided with a downward second pin 32 on the tongue piece protruding from the other edge of the fixing member 21, and the other end of the fixing member 21. A locking rod 33 is provided on a tongue piece projecting outward from a notch portion of the upward rib 27 located in the direction of extension of the upward rib 27. The locking rod 33 is rotatably and slidably supported by a bearing portion 34 erected on the mounting plate 24 b, and is a claw 33 a bent in a downwardly folded manner toward the extending direction of the upward rib 27. A spring 35 provided in the bearing portion 34 is normally elastically biased so that the claw 33a is moved toward the lower side of the bearing portion 34.

The gap shielding device 20 configured as such a unit 20a can be retrofitted to the existing fallen object receiving device 4 by the mounting means 25a and 25b. As shown in FIGS. 7 to 9, the fallen object receiving device 4 is attached to the support column 2 of the scaffold construction 1 via the upper pivoting means 5, and against such an existing fallen object receiving device 4. The gap shielding device 20 can be retrofitted by the following method.

The gap shielding device 20 is in a folded state in which the shielding member 23 is superimposed on the fixing member 21, and the fixing member 21 is superimposed on the auxiliary plate 11 of the fallen object receiving device 4 in an oblique posture, as shown in FIG. As described above, when the first pin 30 of the first attachment means 25a is inserted into the corresponding opening 12 and rotated as indicated by the arrow with the first pin 30 as a fulcrum, the locking claw 31 is moved to the auxiliary plate 11. The side edge 11a is held and locked, whereby the first attachment means 25a is attached to the auxiliary plate 11 in a retaining state.

When the above-described gap shielding device 20 is rotated, as shown in FIG. 8 (A), the second attachment means 25b approaches so as to overlap the opposite end of the auxiliary plate 11, and thus resists the spring 35. The second pin 32 is inserted into the corresponding opening 12 in a state where the claw 33a is moved outward by sliding and / or rotating the locking rod 33, and then the locking rod 33 When the spring 33 is moved and returned by the spring 33, the claw 33a holds the side edge 11a of the auxiliary plate 11 so that the second attachment means 25b is attached to the auxiliary plate 11 in a retaining state.

Through the above operation, the gap shielding device 20 is attached to the auxiliary plate 11 of the falling object receiving device 4 as shown in FIG. At this time, the shielding member 23 is folded over the fixing member 21, and the first attachment means 25a and the second attachment means 25b are opened and exposed, so that the gap shielding device 20 is retrofitted. Work can be done easily. If the gap shielding device 20 is unnecessary, the gap shielding device 20 can be easily and easily removed by performing the reverse operation.

As shown in FIG. 10A, the shielding member 23 of the gap shielding device 20 is attached to the existing fallen object receiving device 4 from the non-use position P <b> 1 superimposed on the fixing member 21, and pivoting means 22. Is pivoted up as shown by an angle θ. As a result, the free end of the shielding member 23 is turned upright to the use position P2 where the free end of the shielding member 23 comes into contact with the support member 36 such as the support column 2 and / or the sheet. It is possible to close the gap S between the two.

In the case of the illustrated example, the case where the covering member 36 provided on the outer side surface X of the work space is made of an extremely thin sheet material is shown. However, the covering member 36 is made of a thick frame material or panel material, and from the outer side surface X. Even in the case of protruding, the shielding member 23 can move the free end to an arbitrary position by the rotation of the pivoting means 22, so that it can be used by rotating while changing the angle θ. The free end can be brought into contact with the covering member 36 at the position P3 or any other arbitrary position, and the gap S can be reliably closed from above.

Then, as shown in FIG. 10B, in order to change the posture of the falling object receiving device 4 toward the retracted posture, the falling object receiving device 4 (auxiliary plate 11) is rotated around the horizontal shaft member 9, When the falling object receiving apparatus 4 is brought close to the scaffold construction body 1, the shielding member 23 narrows the angle θ while the free end is in contact with the scaffold construction body 1 and / or the covering member 36. Since it is rotated following the posture change of the receiving device 4 and is finally folded to overlap the fixing member 21, the posture change of the falling object receiving device 4 can be performed with the falling object receiving device 4 still attached. Make it possible.

As shown in the figure, the shielding member 23 that is turned upright at the use position P2 or P3 is in an upward inclined posture in which the free end has moved beyond the vertical line V passing through the axis of the pivoting means 22. Thus, the free end of the shielding member 23 is stopped and held in a state where the free end is urged toward the support column 2 and / or the covering member 36 in the contact direction. However, in addition to the self-weight, for example, an urging means for urging the shielding member 23 in the abutting direction, such as interposing a spiral spring on the pivoting means 22, may be provided. In this case, when the shielding member 23 is rotated to the non-use position P1 against the urging means, a locking means for detachably locking the shielding member 23 to the fixing member 21 is provided, thereby the unit 20a. The gap shielding device 20 is preferably configured to contribute to transportation and storage. Alternatively, as another configuration, the pivoting means 22 may be configured by a torque hinge that rotates when a predetermined torque external force is applied, but releases the external force by friction resistance or the like. In this case, the shielding member 23 can be held at the non-use position P1 without providing the aforementioned locking means.

Thus, since the shielding member 23 is rotatable by the pivoting means 22 and is configured to be able to change the rotation standing angle θ to an arbitrary angle, the falling object receiving device as described above. 4 when the posture is changed between the working posture and the retracted posture, or even when the working posture itself is changed, the angle θ is freely changed following such a posture change, Since the gap S is suitably closed from above and the shielding member 23 is automatically folded, it is possible to change the posture of the fallen object receiving device 4 toward the retracted posture while the gap shielding device 20 remains attached. To do.

Further, even when the falling object receiving device 4 changes the mounting position by selecting the pivotal support holes 9a and 9b as described above, even when the size of the gap S is changed, the shielding member 23 is provided with such a mounting position. By following the change and freely changing the angle θ, the gap S can always be suitably closed from above.

As a result, even when a small article such as a small article falls from the upper work space toward the outer space Y, the fallen object can be reliably received not only by the fallen object receiving device 4 but also by the shielding member 23 of the gap shielding device 20. It is possible, and suitably prevents falling toward the ground.

As described above, the gap shielding device 20 constitutes the unit 20a that can be retrofitted to the existing fallen object receiving device 4, and when storing and transporting, as shown in FIG. It is comprised so that lamination | stacking is possible.

In the gap shielding device 20, the shielding member 23 and the fixing member 21 are superposed in a substantially parallel state in the state of the unit 20 a, and the shielding member 23 is brought into contact with the holding rib 26 of the fixing member 21. At this time, as shown in the drawing, the second mounting means 25b is moved onto the fixing member 21 by rotating the locking rod 33 with respect to the bearing member 34, thereby lowering the bulk in the vertical direction. It is configured as follows.

When the plurality of units 20a are stacked vertically in parallel, the pins 30 and 32 of the upper unit 20a abut against the mounting plates 24a and 24b of the lower unit 20a, so that the shielding members of the units 20a and 20a adjacent to each other vertically 23 are stacked in a state of being spaced apart from each other by a predetermined interval R.

Corresponding to the predetermined interval R, the spacer member 29 is formed of a rectangular tube material having a height H (H = R) that can hold the predetermined interval R. In the case of the illustrated example, the upper surface of the shielding member 23 is formed. It is fixed in a state of protruding from. For this fixing, a head-attached fixing tool 37 is inserted through the shielding member 23, and the spacer 37 is fixed to the upper surface of the shielding member 23 by the fixing tool 37 and the head 37 a of the fixing tool 37 is attached. Protrudes from the lower surface of the shielding member 24. The fixing tool 37 may be a headed bolt or the like in addition to the rivet as shown in the figure.

Therefore, as shown in the drawing, the head portion 37a of the fixing tool 37 protruding from the lower surface of the shielding member 23 of the upper unit 20a is formed on the protruding surface of the spacer member 29 protruding from the upper surface of the shielding member 23 of the lower unit 20a. Since they face each other, a fitting recess 38 is provided on the protruding surface of the spacer member 29 at a position corresponding to the head 37a.

According to this configuration, the head 37a of the fixing tool 37 protruding from the shielding member 23 of one unit 20a is provided on the shielding member 23 of the other unit 20a in the stacked units 20a and 20a adjacent to each other. Since it is inserted into the fitting recess 38 of the spacer member 29, the operation when stacking a large number of units 20a is easy, and the collapse of the stacked state can be prevented.

In the case of the illustrated example, the spacer member 29 is fixed to the upper surface of the shielding member 23, and the head portion 37a of the fixing tool 37 protrudes from the lower surface of the shielding member 23. On the contrary, the spacer member 29 is It may be fixed to the lower surface of the shielding member 23, and the head portion 37 a of the fixing tool 37 may protrude from the upper surface of the shielding member 23. Further, the fitting recess 38 may be constituted by a hole as shown in the figure, or may be constituted by a bottomed depression. In short, by inserting the head portion 37a of the fixing tool 37, the shielding member 23 is provided. As long as it is possible to prevent the lateral displacement of.

DESCRIPTION OF SYMBOLS 1 Scaffolding structure 2 Support | pillar 3 Scaffold board 4 Falling object receiving apparatus 5 Upper pivot means 8 Pivoting piece 9 Horizontal shaft member 10 Support bracket 11 Auxiliary board 11a Side edge 12 Opening part 20 Clearance shielding apparatus 20a Unit 21 Fixing member 22 Connecting means 23 Shielding members 24a, 24b Mounting plate 25a First mounting means 25b Second mounting means 26 Holding rib 29 Spacer member 30 First pin 31 Locking claw 32 Second pin 33 Locking rod 33a Claw 34 Bearing part 35 Spring 36 Cover member 37 Fixing tool 37a Head 38 Fitting recess

Claims (4)

A work space is formed by a scaffold construction body provided with a scaffolding plate in an upper and lower hierarchy, and a falling object receiving device that protrudes from the scaffold construction body toward the outer space of the work space is provided,
The falling object receiving device (4) is an operation in which a base end portion is pivotally connected to the scaffold construction body (1) via a horizontal axis (9), and a free end portion projects toward the outer space (Y). In the configuration in which the posture can be changed between the posture and the retracted posture close to the scaffold construction body with the free end facing upward,
A gap shielding device (20) is provided to cover a gap (S) formed between the base end of the falling object receiving device and the scaffold structure,
The gap shielding device (20) is connected to a fixing member (21) fixed to a base end portion of the falling object receiving device (4), and is rotatably connected to the fixing member via a pivot means (22). A shield member (23),
The shielding member (23) is in the state where the falling object receiving device (4) is in the operating posture, and is angled from the fixing member (21) toward the scaffold construction body (1) via the pivot means (22). The gap (S) is covered by standing up, and when the posture of the fallen object receiving device (4) is changed, the angle θ can be changed following the posture change. The fall prevention device of the fallen object in the scaffold characterized by this. A work space is formed by a scaffold construction body provided with a scaffolding plate in an upper and lower hierarchy, and a falling object receiving device that protrudes from the scaffold construction body toward the outer space of the work space is provided,
The falling object receiving device (4) is an operation in which a base end portion is pivotally connected to the scaffold construction body (1) via a horizontal axis (9), and a free end portion projects toward the outer space (Y). The posture can be changed between the posture and the retracted posture close to the scaffold structure with the free end facing upward, and the horizontal axis (4) can be selectively selected at a plurality of positions toward the outer space (Y). In the configuration where the mounting position can be changed by making it possible to attach to
A gap shielding device (20) is provided to cover a gap (S) formed between the base end of the falling object receiving device and the scaffold structure,
The gap shielding device (20) is connected to a fixing member (21) fixed to a base end portion of the falling object receiving device (4), and is rotatably connected to the fixing member via a pivot means (22). A shield member (23),
The shielding member (23) is in the state where the falling object receiving device (4) is in the operating posture, and is angled from the fixing member (21) toward the scaffold construction body (1) via the pivot means (22). When the mounting position of the fallen object receiving device (4) is changed, the gap (S) is changed by changing the angle θ following the mounting position change. The fall prevention device of the fallen object in the scaffold characterized by comprising so that it may cover). The gap shielding device (20) constitutes a unit (20a) in which a fixing member (21) and a shielding member (23) are connected and integrated by a pivoting means (22), and the fixing member (21) The fall in the scaffold according to claim 1 or 2, characterized in that the unit (20a) is provided with detachable attachment means (25a, 25b) that can be retrofitted to the existing fallen object receiving device (4). Anti-drop device. When the plurality of units (20a) in which the fixing member (21) and the shielding member (23) are overlapped with each other via the pivoting means (22) are stacked vertically in a parallel posture, the units vertically adjacent to each other ( 20a, 20a) shielding members (23, 23) are arranged at a predetermined interval (R) from each other,
A spacer member (29) is provided on one surface of the upper and lower surfaces of the shielding member (23) so as to project the spacer (R), and a fixing tool (37) for securing the spacer member to the shielding member on the other surface. ) Projecting head (37a), and the projecting surface of the spacer member (29) has a fitting recess (38) at a position corresponding to the head (37a) of the fixing tool,
In the stacked unit (20a, 20a) adjacent to each other, the head (37a) of the fixing tool protruding from the shielding member (23) of one unit is provided on the shielding member (23) of the other unit. The fall prevention device for fallen objects in the scaffold according to claim 3, wherein the fall member is configured to be fitted into the fitting recess (38) of the spacer member (29).

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