JP2019090253A - Slide type scattering prevention device - Google Patents

Abstract

To provide a slide type scattering prevention device which can be safely and easily installed in an upper layer part of a prefabricated scaffold and prevents crushed materials from scattering to an outside of a building.SOLUTION: There are provided a plurality of elevation support devices 2 which goes up and down along a vertical member 10a of a building frame constituting a prefabricated scaffold installed at an outer peripheral position of a building and which can be engaged with and fixed to a horizontal member 10b of the building frame crossing the vertical member 10a. A net attaching member comprising a vertically extending net attaching vertical member 3 and a net attaching horizontal member extending horizontally to the net attaching vertical member 3 is attached to the elevation support devices 2. A protective net 9 is attached to the net attaching member and hung downwardly. An upper part of the net attaching vertical member 3 is preferably sloped toward a building frame upper portion side of the building under demolition. Following a demolition performed from an upper part to a lower part, sequentially, a slide type scattering prevention device 1 is moved downwardly.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a slide-type anti-scattering device for preventing scattering of objects to the outside of a building mainly at a dismantling site of the building.

  Conventionally, in disassembling work of a building, a shatterproof net is provided in order to crush the crushed material to the outside of the building when disassembling the frame sequentially from the upper layer to the lower layer. For example, as shown in FIG. 8, there is a method of attaching a single pipe pipe to the upper layer portion of the framework scaffold using a clamp or the like and providing a shatterproof net between the single pipe pipes.

  Patent documents 1 to 3 are, for example, related to providing a net on the upper part of a frame scaffold.

  Patent Document 1 describes a scattering prevention device that prevents scattering of objects to the outside of the building when the building is disassembled. A plurality of columns supported by the structural portion of the building and erected along the side of the building so as to project above the upper end of the building, and held by the plurality of columns above the upper end of the building; And a protective net covering the top of the building.

  Each of the plurality of columns includes a cylindrical lower member and an upper member coaxially arranged with the lower member, the lower member having a first opening at an upper end and a fixing at a lower end The upper member is fixed to the structural part of the building via the fixing metal by a fixing bolt having a bolt hole and inserted into the fixing bolt hole, and the upper member is included in the cross-sectional shape of the hollow portion of the lower member The upper member is slidably supported on the lower member such that the upper member enters and exits the hollow portion of the lower member through the first opening, and the plurality of columns are independent of each other It is stretchable.

  Patent Document 2 is based on the applicants of the present invention, and includes one or more supporting devices that move up and down along the vertical members of a frame that constitutes a frame scaffold, and handrails that extend laterally of the supporting devices. In the preceding handrail device for frame scaffolding, which is movable upward prior to connection of the framework to the upper side, a net attachment material is provided below the handrail substantially parallel to the handrail, and the net attachment and handrail are provided. There is described a pre-handrail device with a curing net in which a curing net is stretched between woods.

  According to Patent Document 3, a plurality of net holding portions supported by a structural portion of a building and arranged to project above the top of the building along the side of the building, and at a position above the top of the building A shatterproof device is described which is provided with a plurality of net holding parts and is provided with a protective net covering the upper surface of the building, and the plurality of net holding parts are movable independently in the vertical direction with respect to the building.

Patent No. 6181505 gazette Patent No. 5444150 gazette Patent No. 5237895 gazette

  When disassembling a building from the upper part to the lower part, it is necessary to gradually lower the shatterproof net attached to the upper part of the frame scaffold. The conventional method as shown in FIG. 8 is to remove the once installed shatterproof net, remove the clamp while holding the single tube pipe, attach the single tube pipe using the clamp on the lower floor scaffold, and prevent shattering again The work of setting up the net must be repeated (see FIGS. 8 (b) and (c)). The work of holding a single pipe is dangerous, and repeating these series of work is very time-consuming and time-consuming.

  Also, in the method described in Patent Document 1, the protective net is attached with four net columns so as to cover the upper surface of the building, but the task of attaching such a large protective net in the upper layer of the building is very difficult May be dangerous.

  The method described in Patent Document 2 is a leading handrail device for preventing a person (operator) from falling in a scaffold assembly operation and preventing a small member (material, tool, etc.) used at the time of operation from falling. It is not used at the time of construction.

  Although the method described in Patent Document 3 configures a net holding portion, a guide rail, and a rail holding portion in order to provide a protective net, it has many parts, and it takes time for assembly and mounting.

  The present invention is intended to solve the above-mentioned problems, and it can be safely and easily attached to the upper layer portion of the frame scaffolding, and can prevent an object from being scattered outside the building. It aims at providing a scattering prevention device.

※ Claim 1
The slide-type anti-scattering device according to the present invention is a slide-type anti-scattering device for preventing objects from being scattered due to the dismantling work of the building to the outside of the building which is being disassembled sequentially from the top to the bottom. A plurality of lifting and lowering support devices that can be moved up and down along the vertical members of the frame that constitutes the framework scaffold installed at the outer peripheral position of the building and can be locked and fixed to the horizontal members of the frame that intersects the vertical members And a net mounting member comprising a net mounting vertical member mounted on the elevating support device and extending upward and a net mounting cross member extending to the left and right of the net mounting vertical member, and mounted on the net mounting member And a protective net that hangs on the lower side.

  With regard to the portion of the elevating support device, for example, the existing preceding handrail device (product name “rack guard” by the present applicant) described in Patent Document 2 or the like can be used as it is. It is possible to use a device to which a mechanism for attaching is added.

  The net mounting member is a net mounting vertical member and a net mounting cross member, is a member for stretching the protective net, and can be configured using a simple material such as a pipe member or a rod-like member. .

  The slide type shatterproof device of the present invention is composed of a lift support device, a net attachment member, and a protective net, each of which is detachable at the site, and is easy to handle during storage and transportation.

  The protective net can be attached to the net attachment member with a binding wire or a string, but if the work efficiency such as transportation time is taken into consideration, if it is attached to the net attachment member in advance, the protective net The protective net can be tightened only by fixing the lower part, improving work efficiency and safety.

  Moreover, it is good for the upper part of the vertical member for net attachment to incline toward the frame upper part side of the building under demolition. By inclining the upper part of the net mounting vertical member to the upper part of the frame, it is possible to further prevent the debris from scattering to the outside of the building.

  Furthermore, it is preferable that the net attachment cross member be stretchable in the longitudinal direction. There are various types of pitch sizes for providing frame supports of framework scaffolds, such as, for example, 1800 mm and 1500 mm, so it is necessary to match the length of the cross member for net attachment depending on the pitch size of the frame supports. If the crossbar for net mounting can be expanded and contracted in the longitudinal direction, the length of the crossbar for net mounting can be adjusted by the pitch size of the frame support pillar, and various pitch sizes can be achieved with one crossbar for net mounting It can correspond.

  In addition, if the adjacent material connection hook is provided at the end of the net attachment cross member and the adjacent material connection hook is locked at the end of the adjacent net attachment cross member, in the overlapping part of the net attachment cross members It may be possible to prevent a gap from occurring.

  A net attachment part can be provided at both ends of the net attachment cross member, and a string-like net opening / closing string can be inserted through the net attachment part and the upper end of the protection net, and the protection net can be opened / closed by operating the net opening / closing cord. You may do so. If a net for opening and closing is inserted in advance to the net attachment part and a protective net is attached to the net attachment member, after attaching the net attachment member to the elevating support device, simply operating the net for opening / closing cord You can put on a protective net.

  The slide-type anti-scattering device according to the present invention has the above-mentioned configuration, so it can be provided safely and easily on the upper part of the frame scaffolding, and when disassembling the housing sequentially from the upper part to the lower part It can be easily raised and lowered along the longitudinal members of the frame.

  If the upper portion of the net mounting vertical member is inclined toward the housing side of the building, the shattered matter can be further prevented from scattering. Moreover, by making the cross member for net attachment longitudinally expandable, adjustment can be performed according to the pitch size of the frame.

In one embodiment of the slide type scattering prevention device according to the present invention, it is a perspective view showing a state viewed from the building side. FIG. 2 is a perspective view from the outside in the embodiment of FIG. 1; An embodiment of the raising and lowering support device in the slide type scattering prevention device according to the present invention is shown, in which (a) is a schematic perspective view and (b) is attached to the framework scaffolding. FIG. An embodiment of a member for net attachment in a slide type splash prevention device concerning the present invention is shown, (a) is a side view, (b) is a front view, (c) is a top view. The other embodiment of the member for net | network attachment in the slide type scattering prevention apparatus which concerns on this invention is shown, (a) is a side view, (b) is a front view, (c) is a top view. The slide type | formula scattering prevention apparatus which concerns on this invention WHEREIN: The case where the member for net | network attachment was mounted | worn with the raising / lowering support apparatus was shown, (a) is a side view, (b) is a front view. It is the side view which showed the construction procedure at the time of using the slide type | formula scattering prevention apparatus which concerns on this invention toward the downward direction from the upper direction to the exterior of the building under disassembling one by one. It is the side view which showed the construction procedure in the conventional example of a scattering prevention apparatus. The slide type | formula scattering prevention apparatus which concerns on this invention WHEREIN: The other embodiment at the time of providing the adjacent material connection hook in the cross member for net attachment is shown, (a) is a side view, (b) is a front view. , (C) is a plan view. It is the perspective view which showed the state which latched the adjacent material connection hook in embodiment of FIG. In other embodiment of the slide type | formula scattering prevention apparatus which concerns on this invention, it is the perspective view seen from the building side about the state which attached the member for net | network attachment to frame scaffolding in the state which closed the protective net. It is the perspective view which saw the state which is raising the protection net | network by operating a net | network opening-closing string from the state of FIG. 11 from the building side. It is the perspective view which saw the state which operated the net | network opening-closing string from the state of FIG. 12, and closed the protective net from the building side.

  Hereinafter, the present invention will be described based on the attached drawings. The present invention is not limited to the embodiments described below.

  Fig. 1 shows the condition that the sliding type anti-scattering device 1 with a protective net 9 put on the outer periphery of the building under construction is set in the top layer of the frame scaffolding 10 from the building side It is the perspective view seen. FIG. 2 is a perspective view from the outside in the embodiment of FIG.

  The frame scaffold 10 is provided on the outer periphery of the building, and the elevating support device 2 is attached to a portion where the vertical member 10a and the horizontal member 10b of the frame forming the frame scaffold 10 on the top floor intersect.

  The vertical mounting member 3 consisting of two members is inserted into the lifting and supporting device 2, and horizontal mounting members 4 and 5 are provided horizontally on the upper and lower sides of the vertical mounting member 3 to protect the net. 9 is attached.

  Further, from the lower net attachment cross member 5 to the upper net attachment cross member 4, the net attachment vertical member 3 is provided with a slope on the building side. Put a protective net 9 between the upper and lower two net mounting cross members 4 and 5 and hang the protective net 9 further from the lower net mounting cross member 5 so that the debris will be scattered during disassembly work Can be prevented.

  FIG. 3A shows an embodiment of the elevating support device 2 in a perspective view, and a plan view of FIG. 3B shows a case where the elevating support device 2 of FIG. Indicated. The elevating and supporting device 2 shown in FIG. 3 (a) as an example is used as a product (product name "rack guard" by the present applicant).

  In the case where the elevating support device 2 shown in FIG. 3A is attached to the framework scaffold 10 (see FIGS. 1 and 2), the vertical member 10a of the frame fits within the groove 2e extending in the central longitudinal direction of the elevating support device 2. Positioning stoppers 21 positioned on both sides of the groove 2e are engaged with the cross member 10b of the frame, and are further fixed to the frame 10 by the operation of the clamp levers 2c positioned vertically. The upper and lower clamp levers 2c are interlocked, and either may be operated.

  The positioning stopper 2a is biased by a spring, and when raising and lowering the elevating and supporting device 2 along the longitudinal member 10a of the frame, it strikes against the cross member 10b of the frame to resist the biasing force of the spring. It is automatically opened, returned to its original position when passing the cross bar 10b, and locked on the cross bar 10b. In the case of lowering, the positioning stopper 2a can be lowered along the longitudinal member 10a by forcibly opening the positioning stopper 2a by another operation.

  Further, in the illustrated example, the separation preventing roller 2b provided with a plurality of petal-like projections is provided on both sides in the height direction of the groove 2e of the elevating and supporting device 2 in the height direction. Is prevented from coming off the longitudinal member 10a of The detent roller 2b is rotatable about its axis, and is biased by a spring so that one protrusion is positioned in the direction to close the groove 2e.

  With such a petal-like roller configuration, interference with the crosspiece 10b of the frame can be avoided when the elevation support device 2 is raised or lowered. That is, when raising / lowering the elevating support device 2, the protrusion of the detent roller 2 b collides with the cross bar 10 b of the frame, but the detent roller 2 b rotates to move the cross bar 10 b while moving. It is possible to prevent the lifting and supporting device 2 from coming off the vertical member 10a.

  The attachment of the net attachment member consisting of the net attachment longitudinal member 3 and the net attachment cross members 4 and 5 is performed by attaching the net attachment vertical to the hole of the net attachment member holder 2d provided at the upper part of the elevating support device 2. This is done by inserting the material 3 and it is preferable to insert a lock pin or the like to prevent it from coming out.

  In FIG. 4, one Embodiment of the member 3 for net | network attachment was shown by the side view, the front view, and the top view in (a)-(c). Two net mounting vertical members 3 are provided in the center, and a net mounting horizontal member 4 is mounted on the upper end of the net mounting vertical member 3. Another net attachment cross member 5 was provided in the sloped part of the net attachment vertical member 3 in the middle, and two net attachment cross members 4 and 5 were provided horizontally. A U-shaped net mounting portion 6 for mounting the protective net 9 is provided at the left and right ends of the net mounting cross members 4 and 5.

  With regard to the net mounting members, in the mounted state, the two net mounting cross members 4 and 5 extend in parallel from the two net mounting vertical members 3 and the protective net 9 is mounted on the upper and lower net mounting cross members 3 Therefore, the protective net 9 is stretched without slack.

  If the protective net 9 is attached to the net mounting portion 6 of the cross mounting members 4 and 5 using a binding material, a string, or the like before mounting the net mounting member to the elevating support device 2, the net mounting member At the same time, the protective net 9 can also be carried, and work efficiency is also improved.

  Also, by bending one end of the upper net mounting cross member 4 and the lower net mounting cross member 5 toward the frame side of the building, the adjacent net mounting cross members 4 and 5 are prevented from overlapping. be able to.

  FIG. 5 shows another embodiment of the net attachment member. Two net mounting vertical members 3 are provided in the center, and net mounting horizontal members 4 and 5 are provided at two positions, the upper end portion of the net mounting vertical member 3 and the inclined portion. Further, the upper and lower net attachment cross members 4 and 5 are divided into two on the left and right, and are attached to the net attachment longitudinal member 3 via the cross member attachment pipe 7.

  The diameter of the cross member mounting pipe 7 is larger than that of the upper and lower net mounting cross members 4 and 5, and it is possible to slide by inserting the net mounting cross members 4 and 5 into the cross member mounting pipe 7. There is. If the cross members 4 and 5 for net attachment divided into two can slide, it is possible to adjust the length of the cross members 4 and 5 for net attachment according to the pitch size of the construction frame. It can correspond to various pitch sizes of the frame. A retaining bolt 8 or the like may be provided and fixed to one end of the net mounting cross members 4 and 5.

  4 and 5 show the net mounting vertical member 3 consisting of two members on the premise of using the elevating and supporting device 2 shown in FIG. The number of longitudinal members 3 may be one or more, and is not particularly limited as long as there is no problem in strength, durability, and stability. Also, in the figure, the upper and lower net mounting cross members 4 and 5 are provided at two places, the upper end of the net mounting vertical member and the inclined portion, but a structure that allows the protective net 9 to be stretched without bending. If it is, it may be provided horizontally anywhere.

  Moreover, although the vertical attachment 3 for net attachment and the horizontal attachment 4 and 5 for net attachment show what used the pipe material, a cross section etc. are not specifically limited, It comprises using a simple rod etc. And any type that can maintain the durability of the protective net 9. Although the net attachment portion 6 is U-shaped, it may have any shape as long as the protective net 9 can be safely and easily attached to the net attachment cross members 4 and 5 using a binding material or a string.

  FIG. 6 shows an embodiment in which the elevating support device 2 shown in FIG. 3 is attached to the frame 10, and a net mounting member consisting of the net mounting vertical member 3 and the net mounting cross members 4 and 5 is inserted and mounted. .

  FIG. 7 shows a construction procedure in the case where the slide type scattering prevention device 1 according to the present invention is used from the upper side to the lower side sequentially to the outside of the building 11 being disassembled.

  FIG. 7 (a) shows a state in which disassembly of the upper floor of the building 11 is completed in a state in which the slide type scattering prevention device 1 of the present invention is attached to the building frame side of the frame scaffold 10. In this state, the elevating and supporting device 2 is attached to the vertical member 10a of the frame that constitutes the top floor of the frame scaffold 10 (see FIG. 3 (b) and FIG. 6). That is, the vertical member 10a of the frame is inserted into the groove 2e of the elevating support device 2, and the clamp is closed and fixed where the positioning stopper 2a abuts against the horizontal member 10b of the frame.

  As shown in FIG. 7 (a) and as shown in FIG. 7 (b), the worker releases the fixing of the elevating and supporting device 2 on the framework scaffold 10, and along the vertical members 10a of the frame constituting the framework scaffold 10. Then, the elevating support device 2 is lowered, and the clamp is closed and fixed where it strikes the lower horizontal member 10b.

  The protective net 9 is previously attached to the net attachment portion 6 of the cross members 4 and 5 for attaching the net, and along with the lowering of the elevating and supporting device 2, the entire slide type anti-scattering device 1 moves downward. After the slide type scattering prevention device 1 is fixed, the disassembling operation of the top of the undisassembled part of the building 11 is advanced.

  As shown in FIG. 7 (b) and as shown in FIG. 7 (c), the frame scaffold 10 is sequentially disassembled from the top along with the disassembly of the building 11, and the frame wall of the frame wall and the frame scaffold 11 of the undisassembled part If the connection is disconnected, disassemble the housing wall.

  By repeating the above-described work, along with the dismantling work of the building from the top to the bottom, the slide type anti-scattering device 1 attached to the framework scaffold 10 is sequentially moved downward along the vertical member 10a of the construction frame It can be moved.

  FIG. 9 shows the case where the net attachment portion 6 and the adjacent material connection hook 31 are provided on the net attachment cross members 4 and 5. Two net mounting cross members 4 and 5 are horizontally extended from two net mounting vertical members 3 provided at the center. A net mounting portion 6 is provided at both ends of the upper and lower net mounting cross members 4 and 5. In addition, a U-shaped adjacent material connection hook 31 is provided at one end of the upper net attachment cross member 4.

  FIG. 10 shows a state in which the adjacent material connection hook 31 is used. The adjacent material connection hook 31 is provided at the end of the back side net attachment cross member 4 and is engaged with and engaged with the overlapping end of adjacent net attachment cross members 4. The adjacent material connection hook 31 can prevent a gap from being generated at the end of the adjacent net attachment cross member 4.

  9 and 10 show a thin tubular U-shaped adjacent material connection hook 31 welded to one end of the net attachment cross member 4, but the adjacent net attachment cross member 4 There is no limitation as long as the shape and the like are not limited as long as there is no problem in terms of strength and durability, as long as the shape 5 can connect the overlapping portions when overlapping at the end.

  11 to 13 show how the protective net attached to the net attachment member is opened and closed. The lower end portion of the protective net 9 is attached and fixed to the lower net attachment cross member 5, and the net attachment portion 6 provided at the upper end of the protective net 9 and the end portions of the upper and lower net attachment cross members 4, 5 The protective net 9 is attached to the net attachment member in advance while the net opening and closing cord 32 is inserted.

  Attach the member for net attachment to which the protective net 9 is attached in advance to the elevating support device 2 attached to the upper part of the frame scaffold 10, and the worker in the frame scaffold 10 pulls the string 32 for net opening and closing. 12, FIG. 13) When the string for opening and closing the net is loosened, the upper end of the protective net 9 descends toward the lower net mounting cross member 5.

  If the net attachment member is attached to the lifting and lowering support device 2 with the protective net 9 closed as shown in FIG. 11, the wind load can be avoided, and the work of detaching the net attachment member becomes safer. Further, by thus attaching the protective net 9 using the net attachment portion 6 at the end of the cross mounting members 4 and 5 and the net opening and closing cord 32 in this manner, the worker in the framework scaffold 10 operates Thus, the protective net 9 can be easily opened and closed.

DESCRIPTION OF SYMBOLS 1 ... Sliding-type scattering prevention device 2 ... Elevating and supporting device 2a ... Positioning stopper 2b ... Releasing roller 2c ... Clamp lever 2d ... Net attachment member holder 2e ... Groove part 2f ... Attachment member connection pipe 3 ... Net attachment longitudinal member 4 ... Cross member for mounting on the net (upper side)
5 ... Cross member for mounting the net (lower side)
Reference Signs List 6 net mounting part 7 pipe for horizontal member installation 8 retaining bolt 9 protection net 10 frame scaffold 10a vertical frame of building frame 10b horizontal frame of building frame 10c scaffolding board 11 building (housing)
12 Single pipe pipe 13 Clamping bracket 31 Adjacent material connecting hook 32 String for opening and closing net

Claims (5)

It is a slide-type shatterproof device for preventing objects from being scattered due to the dismantling work of the building from the upper side to the lower side sequentially from the building being dismantled,
A plurality of elevating and supporting devices that can be moved up and down along the vertical members of the frame that constitutes the frame scaffold installed at the outer peripheral position of the building and can be locked and fixed to the horizontal members of the frame that intersects the vertical members When,
A net attachment member comprising a net attachment longitudinal member attached to the elevating support device and extending upward, and a net attachment transverse member extending left and right of the net attachment longitudinal member;
A protective net attached to the net attachment member and hanging downward;
A slide-type shatterproof device characterized by comprising:   The slide-type anti-scattering device according to claim 1, wherein an upper portion of the net attachment longitudinal member is inclined toward an upper portion side of a frame of a building being dismantled.   3. A slide-type anti-scattering device according to claim 1, wherein the cross-piece for attaching the net is extendable in the longitudinal direction.   The sliding type scattering prevention device according to claim 1, 2 or 3, wherein an end of the net attachment cross member is provided with an adjacent material connection hook, and the end of the net attachment cross member adjacent to the adjacent material connection hook A slide-type shatterproof device characterized in that it can be locked to the The slide type scattering prevention device according to any one of claims 1 to 4, wherein net attachment parts are provided at both ends of the net attachment cross member, and the net attachment part and an upper end part of the protective net are string-like A slide type anti-scattering device characterized in that the protective net can be opened and closed by inserting the net opening and closing cord and operating the net opening and closing cord.