JP5950446B2 - Temporary scaffolding stairs and temporary scaffolding security system using the same - Google Patents

Description

  The present invention relates to a temporary scaffolding staircase that is installed in a temporary scaffolding that is assembled, for example, at a construction site or the like and that detects the intrusion of an illegal intruder. The present invention also relates to a crime prevention system for a temporary scaffold using the temporary scaffold staircase.

  Conventionally, in construction sites where renovations and repair work (painting, tiling, waterproofing repairs, crack repairs, etc.) of condominiums, etc. are implemented, temporary scaffolds for site workers to work at high places around the building Is assembled. Around the temporary scaffolding, for example, a construction sheet is attached for the purpose of preventing the material from falling or blindfolding. The construction sheet is also used to block dust and noise generated during the work.

  When a construction sheet is attached to the temporary scaffolding, the interior (building) becomes difficult to see from the outside. Therefore, illegal intruders can easily enter buildings such as condominiums using the temporary scaffolding at night when the site workers are not at the construction site or during breaks during the day of construction work.

  Therefore, for example, Patent Document 1 proposes a crime prevention system in which an intrusion detection device such as an infrared sensor is installed on a horizontal member or a column of a temporary scaffold, and an intruder is detected by the intrusion detection device.

JP 2010-39529 A

  However, since the intrusion detection device is attached to a horizontal member, a support column or the like, there is a problem that it is easily detected by an illegal intruder. For this reason, illegal intruders may avoid the intrusion detection device or the intrusion detection device may be broken by the illegal intruder.

  The present invention has been conceived under the circumstances described above, and provides a staircase for a temporary scaffold in which an intrusion detection device for detecting an intruder's intrusion is not easily noticed by the intruder. This is the issue. It is another object of the present invention to provide a security system for a temporary scaffold using the temporary scaffold staircase.

The temporary scaffold staircase provided by the first aspect of the present invention is a temporary scaffold staircase that is used in a temporary scaffold and has a plurality of tread members that are arranged such that the treads are substantially along the horizontal direction. A detecting means for detecting an intruder located on the raising / lowering side, and an attachment member for attaching the detecting means to the tread board member, wherein the attaching member is a member of the tread board member opposite to the raising / lowering side. The flange piece that is disposed on the depth side and includes a rectangular main body plate having a flange piece at one end, the flange piece that is attached to the depth side end portion of the tread member, and a fastening member that can be tightened from below The tread board member is attached to the tread board member by sandwiching the tread board member in the vertical direction .

  In the temporary scaffold staircase of the present invention, the attachment member may be attached to any one of the plurality of step board members disposed below.

  In the staircase for temporary scaffolding according to the present invention, the step board member may be made of an aluminum alloy and at least the depth side end portion may be formed in a box shape.

  In the temporary scaffolding staircase of the present invention, the detection means may be a passive sensor that detects the presence of the intruder by electromagnetic waves.

  A crime prevention system for a temporary scaffold provided by the second aspect of the present invention includes a staircase for a temporary scaffold provided by the first aspect of the present invention, and a receiving means for receiving a detection signal output from the detection means. And a notifying means for notifying the outside based on the reception of the detection signal by the receiving means.

  According to the temporary staircase of the present invention, since the detection means (for example, a detection sensor) is attached to the depth side of the tread board member by the attachment member, the detection means is not easily noticed by an illegal intruder entering the temporary scaffold, The detection means can be prevented from being passed or broken by illegal intruders. Further, even when raw concrete, mortar, paint, and the like used in field work are scattered, it is difficult to adhere to the detection means. Therefore, it is possible to reduce the possibility of causing malfunction of the detection means itself.

  Moreover, according to the temporary scaffold crime prevention system of the present invention, the detection signal from the detection means is sent to the reception means and notified to the outside by the notification means. Therefore, for example, when the notification means is an alarm device, an illegal intruder surprised by the alarm can be dissipated from the temporary scaffolding, and an illegal intruder can be prevented from entering the temporary scaffolding or an apartment.

It is a figure which shows the staircase for temporary scaffolds which concerns on this invention, (a) is a front view, (b) is a side view. It is a front view of the detection sensor shown in FIG. It is an AA arrow line view shown in FIG. It is a disassembled perspective view of a tread member. It is a figure for demonstrating the attachment state with respect to the tread board member of an attachment member. It is a figure for demonstrating the detection area | region of a detection sensor, and the case where a detection sensor is installed in the 1st layer of the temporary scaffold is shown. It is a figure for demonstrating the detection area | region of a detection sensor, and the case where a detection sensor is installed in the 2nd layer of the temporary scaffold is shown. It is a block diagram of the crime prevention system for temporary scaffolds. It is another block diagram of the crime prevention system for temporary scaffolds. It is another block diagram of the crime prevention system for temporary scaffolds.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  1A and 1B are diagrams showing a staircase for a temporary scaffold according to the present invention, wherein FIG. 1A is a front view and FIG. 1B is a side view. FIG. 2 is a front view of the detection sensor shown in FIG. FIG. 3 is an AA arrow view shown in FIG.

  The temporary staircase 1 for temporary scaffolding according to the present embodiment (hereinafter simply referred to as “staircase 1”) is installed in a temporary scaffolding such as a construction site, for example, and a site worker moves up and down between the upper and lower layers of the temporary scaffolding. Used for. The temporary scaffold is provided with a plurality of pillars (not shown) and a plurality of horizontal members H locked to them, and a cloth frame B with a floor, for example, is hooked between the adjacent horizontal members H. The site worker can walk on the floor-attached cloth frame B and move in the temporary scaffold.

  As shown in FIG. 1B, the stairs 1 are arranged between the ground G and the floor-attached cloth frame B arranged in the second layer of the temporary scaffold. Or although not shown in figure, it arrange | positions between the cloth frames B with a floor | bed arrange | positioned for every layer.

  The staircase 1 is made of, for example, an aluminum alloy, and connects a plurality of step board members 2, a pair of support members 3 for supporting these step board members 2 from the left and right, and the lowermost ends of the support members 3. It is comprised by the connection member 4. FIG. The plurality of tread members 2 are arranged in parallel at equal intervals so that their treads are along a substantially horizontal direction.

  As shown in FIGS. 3 and 4, the tread board member 2 is formed into a flat plate shape. More specifically, the tread plate member 2 is formed at the long flat plate 5 and the depth side (left side in FIG. 3) end along the longitudinal direction. Box body 6, a box body 7 formed at the front side (right side in FIG. 3) end portion along the longitudinal direction, a box body 8 formed at the center portion along the longitudinal direction, and the lateral direction thereof Are provided at both end portions along the cross-section, and have a substantially U-shaped beam member 9, 10 (see FIG. 4). Each of the box bodies 6 to 8 has a hollow structure and is provided for the purpose of reinforcing the tread member 2.

  A detection sensor 11 is provided on any one of the plurality of tread members 2 (for example, the second tread member 2 from the bottom). The detection sensor 11 is attached to the tread member 2 by being mounted by the mounting member 12.

  The attachment member 12 is formed in a substantially E shape in a side view, and a main body plate 13 formed in a substantially rectangular flat plate shape, an upper flange piece 14 extending in the horizontal direction from the upper end of the main body plate 13, and a main body plate 13 includes a lower flange piece 15 extending in the horizontal direction from the lower end of 13, and a bolt support piece 16 extending in the horizontal direction from a slightly upper part of the center of the main body plate 13. The upper flange piece 14 is for attaching to the tread board member 2. The lower flange piece 15 is for protecting the detection sensor 11.

  Two openings (not shown) are formed in the bolt support piece 16 in the vicinity of both ends so that nuts 17 are welded to the positions of the upper surface corresponding to these openings. A bolt 18 can be fastened to the opening of the bolt support piece 16 and the nut 17 from below.

  As shown in FIGS. 2 and 3, the mounting member 12 is attached to the depth side end portion of the tread member 2, and the two bolts 18 are tightened from below to tighten the two bolts 18 from below. The body 6 is attached to the tread member 2 so as to be sandwiched between the upper flange piece 14 and the bolt 18.

  In the present embodiment, as shown in FIG. 3, the shortest distance L from the surface of the main body 14 to the central axis of the nut 17 is set to about ½ of the width W in the short direction of the upper flange piece 14. . According to this configuration, when the mounting member 12 sandwiches the box body 6 between the upper flange piece 14 and the bolt 18, a sufficient length is secured in the width W in the short direction of the upper flange piece 14. The member 12 is difficult to come off from the tread member 2.

  The detection sensor 11 is a so-called passive sensor, for example, a sensor that detects the presence of an illegal intruder in response to a change in far-infrared (electromagnetic waves) caused by the movement of the intruder. In the detection sensor 11, the detection angle defining the detection region is, for example, about 5 degrees in a plan view and about 70 degrees in a side view. Further, the detection distance of the detection sensor 11 in the front direction is about 7 m. Note that the detection angle of the detection sensor 11 is variable to some extent.

  The detection sensor 11 includes a plate-shaped main body 11a and a cover 11b that can be attached to the plate-shaped main body 11a. The main body 11a has a sensor unit (not shown). The cover 11b has a semi-cylindrical shape and is made of, for example, polyethylene resin.

  The detection sensor 11 has a function of, when detecting the presence of an illegal intruder, converting the detection signal into a 426 MHz band radio wave, for example, to a controller 21 (not shown). The detection sensor 11 is not limited to the above-described passive sensor as long as it detects the presence of an illegal intruder.

  According to the above configuration, when the illegal intruder enters the temporary scaffolding and tries to move up and down the stairs 1 to which the detection sensor 11 is attached, the detection sensor 11 detects the illegal intruder. As a result, the detection sensor 11 is turned on and outputs a detection signal to an external controller 21 (described later).

  In this case, since the detection sensor 11 is attached to a portion of the tread member 2 that is difficult to enter the eyes of the illegal intruder, such as the depth side opposite to the ascending / descending side as described above, the illegal intruder can easily be noticed. It has become difficult. Therefore, an illegal intruder can be detected appropriately, and the detection sensor 11 can be prevented from being passed or broken by an illegal intruder.

  Moreover, since the detection sensor 11 is attached to the depth side of the tread member 2, the possibility that a field worker hits the detection sensor 11 during transportation of building materials, scaffolding materials, or the like is reduced. Moreover, it can suppress that materials, such as ready-mixed concrete, a mortar, and a coating material used in field work, are scattered and adhered. Therefore, it is possible to reduce the possibility of causing a malfunction due to an on-site worker hitting a building material or the like, or a material such as raw concrete sticking to the detection sensor 11 and solidifying, and the detection sensor 11 can be used for a long time. can do.

  Moreover, according to this embodiment, the tread member 2 is made of an aluminum alloy. Since the aluminum alloy is softer than, for example, a steel plate, as shown in FIG. 5, if the bolt 18 is tightened relatively strongly when the attachment member 12 is attached to the tread member 2, the box of the tread member 2 is provided. The bottom of the body 6 is bent and deformed so as to be pushed. Therefore, the attachment member 12 can be more firmly fixed to the tread member 2. Moreover, according to this embodiment, since the bolt 18 is fastened with respect to the box-shaped box body 6, for example, compared with the step board member formed in plate shape, the amount of tightening of the bolt 18 should be less. And workability can be improved.

  Since the cover 11b of the detection sensor 11 is formed of polyethylene resin, the surface may be deteriorated by, for example, irradiation with sunlight. However, according to this embodiment, since the detection sensor 11 is disposed on the back surface side of the tread member 2, the possibility of being exposed to rain or being directly irradiated with sunlight is reduced. Deterioration can be suppressed.

  As shown in FIG. 6, the mounting position of the detection sensor 11 on the tread member 2 is preferably, for example, the tread member 2 (for example, the second from the bottom) disposed below (the horizontal line portion) when the temporary scaffold has a single layer structure. Shows the detection area.) When the attachment member 12 is disposed below, it is difficult to enter the field of view of the illegal intruder M, and the illegal intruder M in the vicinity of the stairs 1 can be reliably detected.

  As shown in FIG. 7, the mounting position of the detection sensor 11 on the tread member 2 is desirably the tread member 2 (for example, the second from the bottom) arranged in the second layer, for example, when the temporary scaffold has a two-layer structure. . That is, when the detection sensor 11 is arranged below the staircase 1 arranged in the second layer, the detection area of the detection sensor 11 extends over a wide area, and the intruder M rising in the second layer is detected. It is possible to detect a trespasser M who is more visible. Therefore, when detecting an illegal intruder M that goes up and down the stairs 1, it is not necessary to install the detection sensor 11 for each layer, the number of installations can be reduced, and the cost of parts can be reduced. it can.

  The stairs 1 can be applied to a temporary scaffolding crime prevention system (see FIG. 8) for preventing illegal intruders from entering the temporary scaffolding. That is, the crime prevention system for temporary scaffolding includes the detection sensor 11, the controller 21, and the mobile phone 22.

  When the controller 21 receives the detection signal from the detection sensor 11, it transmits that fact to the mobile phone 22 by radio. In addition, between the detection sensor 11 and the controller 21, the relay machine for relaying the detection signal from the detection sensor 11 and transmitting to the controller 21 may be provided as needed.

  According to the above configuration, when the detection sensor 11 detects an illegal intruder as described above, the detection sensor 11 outputs a detection signal to the controller 21 in a wireless manner. When the controller 21 receives the detection signal, it sends a message to that effect to the mobile phone 22. As a result, the mobile phone 22 is notified that an intruder has invaded by voice call, mail, ringing sound, or the like. Even if the person carrying the mobile phone 22 is not at the construction site, he / she can know that an illegal intruder has entered the temporary scaffolding and can take appropriate measures. A personal computer or the like may be used instead of the mobile phone 22.

  Further, in this case, the detection sensor 11 wirelessly transmits the detection signal to the controller 21 on the site office side, so that, for example, cable routing is not required and cost reduction is achieved compared to the case where the signal is transmitted by wire. be able to. The detection sensor 11 may be provided with a sensor part and a part that outputs a detection signal wirelessly.

  FIG. 9 is a diagram showing another configuration of the temporary scaffolding crime prevention system. As shown in FIG. 9, an alarm device may be provided to warn the outside that an illegal intruder has entered the temporary scaffolding side and the site office side. That is, the scaffold side alarm device 23 is provided in the temporary scaffold, and the office side alarm device 24 is provided in the site office.

  In this case, the controller 21 has a function for operating the scaffold side alarm device 23 and the office side alarm device 24. That is, when receiving the detection signal from the detection sensor 11, the controller 21 wirelessly transmits an operation signal to the scaffold side alarm device 23, and to the office side alarm device 24 provided in the same field office. The operation signal is transmitted wirelessly (or wired).

  The scaffold side alarm device 23 is for warning an intruder or threatening an intruder. The scaffold side alarm device 23 includes, for example, a signal reception unit, a sound output unit, and a light output unit which are not shown. When the scaffold-side alarm device 23 receives the operation signal from the controller 21 at the signal receiving unit, the scaffold-side alarm device 23 emits a warning sound from the audio output unit or emits flashing light from the light output unit.

  In addition, the scaffold side alarm device 23 may be provided with only one of the audio output unit and the light output unit. The scaffold side alarm 23 may be attached to a horizontal member or a column of a temporary scaffold, but it is difficult to catch an illegal intruder, for example, the depth side of the tread member 2 of the stairs 1 like the detection sensor 11. It is more desirable to be arranged in In addition, the scaffold side alarm device 23 does not receive the detection by the detection sensor 11 via the controller 21, but directly receives the detection signal from the detection sensor 11, and notifies the outside based on the detection signal. May be.

  The office side alarm device 24 is for notifying a field worker in the field office when an illegal intruder is detected. The office side alarm device 24 has a signal receiving unit, a sound output unit, and a light output unit (not shown), similarly to the scaffold side alarm device 23. When the office side alarm device 24 receives the operation signal from the controller 21 by the signal receiving unit, the office side alarming device 24 emits a warning sound from the sound output unit or emits flashing light from the light output unit.

  According to this temporary scaffolding crime prevention system, when an illegal intruder is detected by the detection sensor 11 in the temporary scaffolding, a detection signal indicating that fact is transmitted to the controller 21, and the scaffolding side alarm device 23 and the office side are detected. The alarm 24 is notified. For this reason, there is a high possibility that an illegal intruder will be surprised at the notification by the scaffold side alarm device 23 and leave the place. Accordingly, it is possible to suppress further intrusion into the temporary scaffolding and intrusion into a building such as a condominium. In addition, the office side alarm device 24 notifies at the site office, so that a worker in the field office can surely know that an illegal intruder has entered the temporary scaffolding.

  In the above configuration, only one of the scaffold side alarm device 23 and the office side alarm device 24 may be provided.

  The crime prevention system for temporary scaffolding is not limited to the above-described configuration, and when a field worker who works at a temporary work site rather than an illegal intruder approaches the staircase 1 provided with the detection sensor 11, It is good also as composition which prohibits information. That is, for example, as shown in FIG. 10, in addition to the configuration shown in FIG. 9 described above, a portable transmitter 25 that is always carried by a field worker and a receiver 26 that receives a transmission signal from the portable transmitter 25. You may have.

  When the site worker approaches the stairs 1 to which the detection sensor 11 is attached, there is no need to notify the scaffold side alarm device 23. For this reason, when a transmission signal is transmitted from the portable transmitter 25 carried by the site worker and this transmission signal is received by the receiver 26, a prohibition signal for prohibiting the detection signal output to the controller 21 to the detection sensor 11 is provided. Send. Thereby, even if the site worker carrying the portable transmitter 25 is detected by the detection sensor 11, the scaffold-side alarm device 23 does not ring, so the site worker can work with peace of mind, that is, an illegal intruder and The distinction from the field worker can be made clear. The receiver 26 may be configured integrally with the detection sensor 11.

  The scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the tread member 2 is made of an aluminum alloy, but is not limited thereto, and may be made of, for example, a steel plate. Further, the staircase 1, the tread member 2, the attachment member 12, the detection sensor 11, and the like are not limited to the shape, quantity, positional relationship, and the like of the above-described embodiment.

DESCRIPTION OF SYMBOLS 1 Staircase for temporary scaffold 2 Tread board member 3 Support member 5 Flat plate 6-8 Box body 11 Detection sensor 12 Mounting member 13 Main body plate 14 Upper flange piece 15 Lower flange piece 16 Bolt support piece 18 Bolt 21 Controller 22 Mobile phone 23 Alarm on scaffold side Machine 24 Office side alarm

Claims (5)

A temporary scaffold staircase having a plurality of tread members used in a temporary scaffold and having a tread surface disposed along a substantially horizontal direction,
Detection means for detecting an intruder located on the ascending / descending side;
An attachment member for attaching the detection means to the front footboard member;
The mounting member is
Arranged on the depth side of the tread member opposite to the ascending and descending side ,
While consisting of a rectangular body plate with a flange piece at one end,
The tread member is attached to the tread member by sandwiching the tread member in the vertical direction by the flange piece attached to the depth side end of the tread member and a fastening member that can be tightened from below. , Temporary scaffolding stairs. The mounting member is
The temporary staircase for temporary scaffolding according to claim 1, which is attached to any one of the plurality of step board members disposed below. The tread member is
The staircase for temporary scaffolding according to claim 1 or 2 , wherein the staircase is made of an aluminum alloy and at least the depth side end portion is formed in a box shape. The detection means includes
The staircase for temporary scaffold according to any one of claims 1 to 3 , which is a passive sensor that detects presence of the intruder by electromagnetic waves. Temporary scaffolding stairs according to any one of claims 1 to 4 ,
Receiving means for receiving a detection signal output from detection means provided in the staircase for temporary scaffold;
A temporary scaffolding crime prevention system, comprising: a notification unit configured to notify the outside based on the reception unit receiving the detection signal.

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