JP2016217060A - Work room formation device for coating balustrade, sheet used therewith, and preservative coating method for balustrade using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work room formation device for coating a balustrade that prevents scattering of dusts and powdery dusts, mitigates burdens for work preparation, and enables preservative coating work without restricting traffic on a pedestrian bridge, etc.SOLUTION: A work room formation device includes a main frame 2 comprising a first frame 4 mounted on a bridge walkway 55 and a second frame 5 installed outside of a balustrade 52, and a sheet 3 for forming a work room 6 fitted on the main frame 2. Since a slit is formed on both right and left sides of the sheet 3 for letting the balustrade 52 pass through, the work room may be formed to be relatively compact in size and light-weight. As a result, burdens on work preparation are mitigated. Furthermore, the balustrade 52 may be coated for preservation without restricting traffic on a pedestrian bridge 51.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a work chamber forming apparatus for balustrade painting used for maintenance painting of a balustrade erected along a side edge of a bridge passage, a sheet used for the work chamber forming apparatus, and the work chamber formation The present invention relates to a balustrade maintenance painting method for painting the balustrade using an apparatus.

  Conventionally, railings such as pedestrian bridges are regularly repainted (maintenance coating) for the purpose of preventing the occurrence of rust and the like, and for repainting paint that has been discolored due to deterioration over time. Specifically, the maintenance painting work first removes old paint and rust, and then paints it again.

  During this maintenance painting work, dust such as old paint and rust and spray dust of new paint are scattered around. Therefore, when painting the railings of the pedestrian bridge so that such dust and spray dust do not affect people and the surroundings passing through the pedestrian bridge, the pedestrian bridge is closed and the entire pedestrian bridge is covered with a sheet, etc. It is common to carry out the work.

  By the way, for the work of maintaining and painting the railings of the bridges through which automobiles pass, for example, as disclosed in Patent Documents 1 and 2, a work booth having a structure in which a scaffold is provided outside the railings and the railings and the scaffolds are covered with a sheet or the like. Is used, and maintenance painting is performed inside the work booth. Since the structure of such a work booth is to fix the framework that supports the scaffold and the seat outside the balustrade without blocking the automobile, a relatively solid framework structure is necessary outside the balustrade. is there.

JP 2004-232366 A JP 2008-231905 A

  However, for example, a footbridge has a narrow passage, and therefore, when the conventional structure is used, it is necessary to provide a framework for supporting the scaffold over the entire footbridge in order to form a firm scaffold outside the railing of the footbridge. Furthermore, since the scaffold on which the operator rides needs to be strong, the framework that supports the scaffold must be a large scale. For this reason, the time and burden required for work preparation such as assembling a scaffold are large, and the work work period is also increased accordingly.

  Therefore, the present invention is for a balustrade painting that can prevent dust and spray dust from being scattered, suppress a burden on work preparation, and can perform maintenance painting work without blocking a pedestrian bridge or the like. It is an object of the present invention to provide a working chamber forming apparatus, a sheet used in the working chamber forming apparatus, and a balustrade maintenance coating method using the working chamber forming apparatus.

  INDUSTRIAL APPLICABILITY The working chamber forming apparatus for balustrade painting according to the present invention is used for the maintenance painting of the balustrade erected along the side edge of the bridge passage, and covers a part in the longitudinal direction of the balustrade and is separated from the outside. A main body that forms a working room and includes a first frame placed on the passage and a second frame provided on one side of the first frame and disposed outside the balustrade. The working room is formed by a frame and a first working air space on the passage formed in the first frame and a second working air space outside the balustrade formed in the second frame. A pair of left and right slits for passing the balustrade, and a caster is disposed at the lower end of the first frame. .

  In such a configuration, the first frame placed on the passage mainly supports the entire apparatus (main body frame and seat), and the worker paints the balustrade in the first working airspace on the passage. Therefore, it can be made relatively compact in size and relatively lightweight. Then, by making the length of the entire apparatus in the left-right direction relatively short and sequentially moving in the longitudinal direction of the balustrade, the balustrade can be sequentially subjected to maintenance coating in a plurality of locations in the longitudinal direction. According to such a configuration, there is no need to assemble a scaffold outside the passage as in the conventional configuration described above, and since it is compact and lightweight as described above, the time and burden required for installation work (work preparation) can be saved. As a result, the work period can be shortened.

  Furthermore, since it is a compact size, it is possible to open and install the opposite passage portion in the case of painting a balustrade on one side even when the passage width is narrow such as a footbridge. Therefore, it is possible to carry out the work without blocking the pedestrian bridge, and it is possible to carry out maintenance painting work for the balustrade while maintaining the convenience and safety of the pedestrian bridge.

  Moreover, the said apparatus can be easily moved with a caster. Thus, as described above, when the balustrade is moved sequentially in the longitudinal direction and the balustrade is subjected to maintenance coating, the moving operation can be easily performed, and the burden on the operator can be further reduced. Since the caster may move during work, it is preferable that the main body frame has a stopping means that can be temporarily disabled. The stopping means is preferably one that can be easily converted into a non-movable state and a movable state. For example, the caster can be converted into a non-rollable locked state and a non-lockable non-lockable state. Things can be applied.

  In the work room forming apparatus for balustrade painting of the present invention described above, the sheet includes a ceiling forming part that constitutes a ceiling of the work room, and a side wall forming part that constitutes a wall around the work room, A second working air space extending portion extending from the lower end of the side wall forming portion to cover the second working air space from below; and the second working air space extending portion in the work room so as to be aligned with the second working air space extending portion. A second working air space extending portion that is suspended downward from the ceiling forming portion and whose lower portion is inserted into the passage from the outside of the balustrade; A configuration is proposed that includes holding means for holding the airspace in a state of covering the airspace from below.

  In such a configuration, the ceiling forming portion and the side wall forming portion of the sheet can prevent dust and spray dust from being scattered around during the maintenance coating operation, and the second working air space extending portion and the inner side Since the second working air space can be double covered from below by the lower part of the drooping portion, the effect of preventing dust and spray dust from falling down outside the balustrade is high.

  And since the extension part for 2nd work airspace is held in the state which covered the 2nd work airspace from the lower part by the holding means, a lot of dust and spray dust collected on this extension part or inner hanging part However, the weight can be stably supported, and the fall of the dust and spray dust can be stably prevented.

  In the above-described working room forming apparatus for balustrade painting according to the present invention, the first frame is composed of a substantially rectangular parallelepiped frame structure having four columns provided at four corners, and the second frame is The frame comprises a frame structure having two vertical rods arranged substantially in parallel with the two adjacent struts in the first frame outside the first frame, and further, the two vertical frames of the second frame. A plurality of horizontal halves that are freely movable up and down passed to the fence, and are provided so as to protrude from the horizontal halves to the passage side, and are detachably engaged with a railing or a pedestal portion of a bridge on which the railings are erected. The structure provided with the engagement piece is proposed.

  Such a configuration is suitable for forming a compact-sized main body frame, and the above-described effects of the present invention are appropriately exhibited. In addition, since the main body frame can be positioned by engaging a plurality of engagement pieces, the position of the balustrade to be subjected to maintenance coating can be stably determined by the positioning, and the maintenance coating operation can be performed stably. it can. Moreover, since the engaging piece is attached to the second frame via the horizontal cross, the second frame located outside the balustrade is stabilized. Therefore, it is possible to suppress as much as possible that the second frame or the entire apparatus is tilted or moved due to wind or the like, and maintenance work in the work room can be stably performed.

  Further, since the plurality of engagement pieces are provided on the horizontal lay, the plurality of engagement pieces can be engaged and disengaged together by moving the horizontal hang up and down. For this reason, this engagement / disengagement operation can be performed quickly and easily, which is extremely convenient when moving the working chamber forming apparatus.

  In the work room forming apparatus for balustrade painting of the present invention described above, a configuration is proposed in which at least each column of the first frame is provided with a height adjusting mechanism capable of changing its height.

  Here, some pedestrian bridges have different heights in part of the balustrade. According to such a configuration, when such a balustrade is maintenance-painted, it is possible to secure a sufficient work space in the work room by changing the height of each support of the first frame according to the height of the balustrade, Workability of maintenance painting work can be kept stable. That is, the configuration of the present invention is based on the premise that the railing is moved in the longitudinal direction when the balustrade is preserved as described above. Can be easily handled.

  On the other hand, the sheet of the present invention is a sheet used in the above-described work chamber forming apparatus for balustrade painting, the ceiling forming part, the side wall forming part, the second working air space extending part, And an inner hanging portion for the second working air space, and is attached to the main body frame to form a working room.

  According to the sheet having such a configuration, as described above, dust and spray dust can be prevented from being scattered around during the maintenance painting operation.

On the other hand, the balustrade maintenance painting method of the present invention is a balustrade maintenance coating method for maintenance painting of a railing of a bridge using the above-described work chamber forming device for balustrade painting, and the longitudinal direction of the balustrade in the work chamber forming device A work process for covering a part of the balustrade, and painting a part of the balustrade in the work room,
And a moving step of moving the working chamber forming device along the longitudinal direction of the balustrade so as to cover a part of the balustrade before the maintenance coating after the maintenance coating in the operation step.

  In such a method, the entire balustrade can be maintenance-painted by alternately repeating the work process and the moving process. Here, since the working chamber forming apparatus is formed in a compact size as described above, the working process and the moving process can be quickly switched, and the maintenance painting work for the balustrade can be executed stably and easily.

  According to the balustrade painting apparatus for forming a balustrade according to the present invention, since it can be made relatively compact and lightweight, the time and burden required for work preparation can be reduced, and the work period can be shortened. In addition, when used for maintenance painting on the railroad of a pedestrian bridge, the maintenance painting can be performed without blocking the pedestrian bridge, so the maintenance painting is performed while maintaining the convenience and safety of the pedestrian bridge. Is possible.

It is a front view which shows the state which installed the working room formation apparatus 1 for balustrade painting concerning an Example in the footbridge 51 from the outer side. FIG. 2 is a side view showing a state in which a work room forming apparatus 1 for balustrade painting is installed on a pedestrian bridge 51. It is LL sectional drawing of FIG. 4 is a plan view of the main body frame 2. FIG. 3 is a front view of a main body frame 2. FIG. 4 is a side view of the main body frame 2. FIG. (A) The perspective view which looked at the sheet | seat 3 from the inner wall formation part 32 side, (b) The perspective view which looked at the sheet | seat 3 from the outer wall formation part 34 side.

  An embodiment of a work chamber forming apparatus 1 for balustrade painting according to the present invention will be described below with reference to the accompanying drawings. In addition, this invention is not limited to the Example shown below, A design change is possible suitably. In the present embodiment, the longitudinal direction of the pedestrian bridge 51 (the length direction of the bridge) is the left-right direction of the work chamber forming apparatus 1, the width direction of the pedestrian bridge 51 is the inner and outer directions of the work chamber forming apparatus 1, and the work In the inside-outside direction of the chamber forming apparatus 1, the passage 55 side will be described as the inside and the opposite side as the outside. The passage 55 of the pedestrian bridge 51 is a bridge passage according to the present invention. Further, since the thickness of the sheet 3 to be described later is a minute dimension in the entire apparatus, the thickness is not shown in the drawings.

First, the installation mode of the working chamber forming apparatus 1 will be outlined.
As shown in FIGS. 1 to 3, the work room forming apparatus 1 serving as a painting booth can be used for the maintenance painting of the balustrade 52 provided on the pedestrian bridge 51, covering a part of the balustrade 52 on one side and The maintenance coating can be performed in the work room 6 formed inside. Here, in the pedestrian bridge 51, pedestal portions 56 that define the width of the passage 55 are provided on both side edges of the passage 55 in the longitudinal direction of the passage 55. 52 is provided.

  The work room forming apparatus 1 includes a part located on the passage 55 of the pedestrian bridge 51 and a part located outside the balustrade 52, and the work room 6 is located inside the balustrade 52 inside the pedestrian bridge 51, as shown in FIG. 3. The first work air space 7 formed on the passage 55 and the second work air space 8 formed outside the balustrade 52 are configured.

  The working chamber forming apparatus 1 of the present embodiment has a substantially rectangular parallelepiped shape, the length in the left-right direction is about 2 m, and is shorter than the total length of the pedestrian bridge 51 (the total length of the balustrade 52). Further, the depth in the inner and outer direction is about 1.3 m, and the depth on the passage 55 (the depth of the first work air space 7) is about 0.8 m.

  Since such a working chamber forming apparatus 1 covers only a part of the balustrade 52 at the installation position, the part covering the balustrade 52 is moved by sequentially moving the installation position along the balustrade 52. Can be made. In addition, since the depth of the work chamber forming apparatus 1 is shorter than the entire width of the passage 55, it is possible to allow the passage 55 to pass through a portion near the balustrade 52 on the opposite side of the passage 55.

Next, the basic structure of the working chamber forming apparatus 1 will be described.
The work chamber forming apparatus 1 includes a main body frame 2 and a seat 3. As shown in FIGS. 4 to 6, the main body frame 2 includes a first frame 4 placed on the passage 55 of the pedestrian bridge 51 and a second frame 5 arranged outside the balustrade 52.

  The first frame 4 has a substantially rectangular parallelepiped skeleton structure, and includes four vertical pillars 11 respectively arranged at four corners and four upper beams 12a connected to upper ends of the respective pillars 11. , 12b and four lower beams 13a, 13b connected to the lower end of each column 11. Then, the frame structure of the first frame 4 is formed by the support columns 11, the upper beams 12a and 12b, and the lower beams 13a and 13b.

  The column 11 is composed of two upper and lower metal pipes 11a and 11b, and the upper pipe 11a is fitted into the lower pipe 11b from the upper end of the lower pipe 11b. A height adjusting member 28 for fixing the upper pipe 11a is disposed at the upper end of the lower pipe 11b. The height adjusting member 28 includes a cylindrical portion (not shown) that is externally fitted and fixed to the upper end of the lower pipe 11b, and a fixing bolt (not shown) that is screwed into a screw hole of the cylindrical portion. The fixing bolt is inserted into an adjustment hole (not shown) formed in the upper pipe 11a and tightened to obtain a fixed height state for fixing the upper pipe 11a. On the other hand, the upper pipe 11a can be converted into a movable state in which the upper pipe 11a can be moved up and down by releasing the tightening. By such a height adjusting member 28, the protruding height of the upper pipe 11a with respect to the lower pipe 11b can be changed, and the height of the column 11 can be changed at any time.

  The height of the support | pillar 11 can be changed as mentioned above, for example, can be changed in the range of 1.8m-2.6m. In general, it is preferable to set the height to 2.2 m which is suitable for general balustrade 52 maintenance coating. Further, the upper beam 12a and the lower beam 13a arranged along the left-right direction of the work chamber forming apparatus 1 (longitudinal direction of the balustrade 52) are long metal pipes having a length of about 2 m. The upper beams 12b and 13b arranged along the inner and outer directions (the width direction of the passage 55) of the chamber forming device 1 are made of short metal pipes having a length of about 0.8 m. The upper beams 12a and 12b and the lower beams 13a and 13b are bent at about 90 degrees downward at both ends, and the connecting end portion 20 is formed by the bent portions. In this embodiment, the lower pipe 11b, the upper beams 12a and 12b, and the lower beams 13a and 13b of the column 11 are stainless steel pipes having the same pipe diameter, and the upper pipe 11a of the column 11 is formed of the lower pipe 11b. It is a stainless steel pipe with a pipe diameter that can be fitted into the pipe.

  And each support | pillar 11 and upper beam 12a, 12b or lower beam 13a, 13b are connected via the connection members 21 and 22 attached to the upper end part and lower end part of each support | pillar 11, respectively. Note that the connecting members 21 are attached to the upper and lower ends of the two left and right columns 11, 11 located inside the passage 55.

  Specifically, the connecting member 21 includes two cylindrical main tube portions 24 that are externally fitted to the support column 11 and two cylindrical shapes that can be fitted with the connecting ends 20 of the upper beams 12a and 12b or the lower beams 13a and 13b. A sub-cylinder portion 25. And the two sub cylinder parts 25 are each joined to the outer peripheral surface of the main cylinder part 24, spaced apart about 90 degree | times in the outer peripheral direction.

  On the other hand, the two left and right support columns 11, 11 positioned near the balustrade 52 are each attached with the connecting member 21 at the lower end and the connecting member 22 at the upper end. The connecting member 22 includes the main tube portion 24 and the three sub tube portions 25, and the three sub tube portions 25 are joined to the outer peripheral surface of the main tube portion 24.

  Here, the two sub-cylinder portions 25 are provided at positions spaced apart from each other by about 180 degrees in the outer circumferential direction of the main cylinder portion 24, and one sub-cylinder portion 25 is approximately the same as the two sub-cylinder portions 25, respectively. It is provided at a position 90 degrees apart. The connecting members 21 and 22 are fixed to the upper end portion and the lower end portion of the support column 11 by predetermined fixing means (such as screwing or welding with bolts), respectively.

  Then, the connecting end portions 20 of the upper beams 12a and 12b and the lower beams 13a and 13b are connected to the sub-cylinder portions 25 of the connecting members 21 and 22 attached to the upper end portion and the lower end portion of the four columns 11, respectively. By inserting the end portions 20 into each other, the substantially rectangular parallelepiped first frame 4 is formed.

  Further, casters 16 are respectively attached to the lower ends of the columns 11 so that the first frame 4 (main body frame 2) can be easily moved while maintaining its form. Note that at least one of the casters 16 is provided with a stop means (brake means) that can stop the rolling of the casters 16.

  Further, the second frame 5 connects two vertical rods 17, 17 substantially parallel to the two left and right columns 11, 11 located near the balustrade 52 in the first frame 4 and the upper end portion of the vertical rod 17. The three upper beams 18a and 18b and one middle beam 19 connecting the central portions of the vertical rods 17 are provided. The vertical rod 17, the upper beams 18a and 18b, and the middle beam 19 are made of the same metal pipe as that of the first frame 4 described above. The vertical frame 17, the upper beams 18a and 18b, and the middle beam 19 form a frame structure of the second frame 5.

  The downpipe 17 has a length of about 2.4 m and is longer than the support 11 (2.2 m) of the first frame 4 that is normally set. The long upper beam 18a and the middle beam 19 have the same shape and dimensions as the upper beam 12a (or the lower beam 13a) of the first frame 4, and the short upper beam 18b has a length of about 0.5 m. . The upper beams 18 a and 18 b and the middle beam 19 are provided with connecting end portions 20 and 20 at both ends, similarly to the upper beam 12 a of the first frame 4.

  The vertical rod 17 and the upper beams 18 a and 18 b of the second frame 5 are connected via the connecting member 21 described above, and the vertical rod 17 and the middle beam 19 are connected via the connecting member 23.

  Here, the connecting member 23 includes the main tube portion 24 and one sub tube portion 25, and the sub tube portion 25 is joined to the outer peripheral surface of the main tube portion 24. The connecting member 21 is externally fitted to the upper end portion of the vertical rod 17 and fixed by predetermined fixing means (screwing or welding with a screw), and the connecting member 23 is externally fitted to the central portion of the vertical rod 17 and It is fixed by fixing means. Then, the connecting end portions 20 of the upper beams 18 a and 18 b are respectively inserted into the sub-cylinder portions 25 of the connecting members 21, and the connecting end portions 20 of the intermediate beams 19 are respectively inserted into the sub-tube portions 25 of the connecting members 23. . Thereby, the second frame 5 is formed.

  Further, the other connecting end 20 of the short upper beams 18b, 18b is connected to the sub-cylinder portions 25, 25 of the connecting member 22 attached to the upper ends of the columns 11, 11 near the balustrade 52 of the first frame 4. Each is fitted inside.

  Thus, the second frame 5 and the first frame 4 are integrated to form the main body frame 2. In the main body frame 2, the upper beam 18 a of the second frame 5 and the upper beam 12 a of the first frame 4 are provided in parallel, and the upper beam 18 b of the second frame 5 and the upper beam 12 b of the first frame 4 are substantially in a straight line. It is provided in the shape.

  Further, the main body frame 2 is provided with a plurality of reinforcing rods 15 extending between the respective columns 11 and the upper beams 12a and 12. Similarly, the plurality of reinforcing rods 15 are provided on the columns 11 and the lower beams 13a and 13b, on the columns 11 and the upper beams 18b near the balustrade, on the vertical beams 17 and the upper beams 18a, and on the vertical beams 17 and 17b. Each of the intermediate beams 19 is provided so as to extend. These reinforcing rods 15 reinforce the main body frame 2 and can prevent deformation of the skeleton. The reinforcing rod 15 is applied with a configuration that can be easily attached to the handed over state and released from the state.

  Further, the second frame 5 is provided with a horizontal bar 45 that can be moved up and down between the left and right vertical bars 17 and 17 below the middle beam 19. The horizontal bar 45 is fixed to the left and right vertical bars 17 and 17 through positioning members 46 and 46 respectively disposed at both left and right ends thereof. Here, the positioning member 46 can be converted into a positioning state in which the horizontal bar 45 is fixed to the vertical bar 17 so that the horizontal bar 45 cannot move up and down, and a released state in which the horizontal bar 45 can be moved up and down by releasing the fixing. It is. The positioning member 46 includes, for example, a cylindrical portion (not shown) that fits the vertical rod 17 and a fixing bolt (not shown) that is screwed into a screw hole of the cylindrical portion. While the bolt is tightened to the positioning state, the tightening is released to the release state.

  A plurality of engagement pieces 47 are attached to the horizontal bar 45 at a predetermined interval. The engagement piece 47 includes a main collar portion 48a that protrudes inward from the horizontal flange 45 and an engagement end portion 48b that extends downward from the inner end of the main collar portion 48a. The engaging piece 47 is engaged with the inner edge of the pedestal portion 56 by placing the main collar portion 48 a on the pedestal portion 56 of the pedestrian bridge 51. That is, by fixing and positioning the horizontal hook 45 to the vertical hooks 17 and 17 at the height position where the main hook portion 48a of the engaging piece 47 is placed on the pedestal portion 56, all the engaging pieces 47 are attached. It can hold | maintain in the state engaged with the base part 56. FIG. Further, when the engagement is released, all the engagement pieces 47 can be simultaneously released by releasing the fixation of the horizontal hook 45 and moving the horizontal hook 45 upward.

  Here, each engagement piece 47 has its main collar portion 48 a fixed to the horizontal collar 45 via a fixing member 49. The fixing member 49 is fixed to the horizontal rod 45, and the main rod portion 48a can be converted into a fixed state and a released state. By setting the released state, the engagement piece 47 is moved inward and outward. The engaging piece 47 cannot be moved in a fixed state. With this fixing member 49, the length of the engagement piece 47 from the horizontal flange 45 to the engagement end portion 48 b can be adjusted, and the desired length with which the engagement end portion 48 b engages with the pedestal portion 56. Can be set.

  On the other hand, the sheet 3 has a substantially rectangular ceiling forming portion 31 as shown in FIG. A substantially rectangular inner wall forming portion 32 extends from the inner edge of the ceiling forming portion 31. Further, from the left and right side edges of the ceiling forming portion 31, substantially rectangular wall forming portions 33, 33 are respectively extended. A substantially rectangular outer wall forming portion 34 extends from the outer edge of the ceiling forming portion 31. In addition, a substantially rectangular extending portion (second working air region extending portion) 35 extends from the lower edge of the outer wall forming portion 34. A substantially rectangular extending portion (first working air region extending portion) 36 extends from the lower edge of the inner wall forming portion 32.

  The left and right side edges of the inner wall forming portion 32 and the inner edges of the left and right wall forming portions 33 and 33 are joined together by sewing or the like, and the left and right side edges of the outer wall forming portion 34 and the left and right walls The outer edges of the forming portions 33 and 33 are joined together by sewing or the like. Thus, the sheet | seat 3 is formed in the lower box shape by which the ceiling was closed with the square cylinder shape enclosed on all sides. The inner wall forming portion 32, the left and right wall forming portions 33, 33, and the outer wall forming portion 34 joined as described above constitute a side wall forming portion according to the present invention.

  Further, in the seat 3, the upper edge of the substantially rectangular inner hanging portion 37 is joined to the ceiling forming portion 31 inside the outer edge by sewing or the like. The inner hanging portion 37 is suspended from the ceiling forming portion 31 in the shape of the above-mentioned box and substantially parallel to the outer wall forming portion 34, and forms a double outer wall structure together with the outer wall forming portion 34. The inner hanging portion 37 is formed with a width in the left-right direction that is substantially the same as the extending portion 35 that extends from the outer wall forming portion 34.

  In such a sheet 3, the ceiling forming part 31 covers the rectangular upper opening of the main body frame 2 surrounded by the upper beams 12 a and 12 b and the upper beams 18 a and 18 b, and the inner wall forming part 32. Covers the rectangular inner opening surrounded by the left and right support columns 11, 11, the upper beam 12 a and the lower beam 13 a located inside the passage 55. The extending portion 36 is drawn from the lower edge of the inner wall forming portion 32 and covers the lower portion of the first frame 4.

  The outer wall forming portion 34 covers the outer opening of the second frame 5 from the upper beam 18 a to the lower ends of the vertical rods 17 and 17, and the extending portion 35 is provided below the outer wall forming portion 34. By pulling in from the edge, the downward opening of the second frame 5 is covered. The inner hanging portion 37 forms a double outer wall structure together with the outer wall forming portion 34, and the lower portion 37 a of the inner hanging portion 37 is placed on the engagement piece 47 of the second frame 5 and inserted inside. Thus, the lower opening of the second frame 5 is covered. As described above, the lower opening portion of the second frame 5 is double-covered by the extending portion 35 and the lower portion 37 a of the inner hanging portion 37. The lower portion 37a of the inner hanging portion 37 is drawn up to the passage 55, while the extending portion 35 is attached to the side edge portion of the pedestrian bridge 51 by holding means K such as a clamp. The holding means K can be attached to and detached from the side edge of the pedestrian bridge 51, and in the attached state, the extending part 35 covers the lower opening of the second frame and can be moved by being removed.

  The left and right wall forming portions 33 cover the left and right openings from the upper beams 12b and 18b arranged in a straight line to the lower ends of the support column 11 and the vertical rod 17, respectively. Further, as a characteristic feature, the wall forming portion 33 is divided into the inside and outside between the adjacent inner and outer columns 11, and is divided into the inside and the outside between the outer columns 11 and the vertical rods 17. It is comprised by the 1st formation part 33a, the 2nd formation part 33b, and the 3rd formation 33c. Here, the first forming portion 33 a and the second forming portion 33 b are inside the balustrade 52, and the third forming portion 33 c is outside the balustrade 52.

  The first forming portion 33a and the second forming portion 33b are respectively provided with detachable hook-and-loop fastener portions (not shown) on the side edges adjacent to each other, and the hook-and-loop fastener portions are bonded together. Thereby, the 1st formation part 33a and the 2nd formation part 33b can be made into one rectangular shape. Further, by bonding the upper portion of the hook-and-loop fastener portion and not bonding the lower portion, a slit S1 can be formed between the first forming portion 33a and the second forming portion 33b. Similarly, the second forming portion 33b and the third forming portion 33c are each provided with a detachable hook-and-loop fastener portion (not shown) on the side edges adjacent to each other, and the hook-and-loop fastener portion is bonded. Thereby, the 2nd formation part 33b and the 3rd formation part 33c can be made into one rectangular shape. Furthermore, the upper part of this hook_and_loop | surface fastener part is adhere | attached, and the lower part is made non-adhesive, and it can be in the state by which the slit S2 was formed between the 2nd formation part 33b and the 3rd formation part 33c. In addition, the sheet-like wall formation part 33 is comprised in the state which adhere | attached these inner and outer two surface fastener parts.

  Furthermore, the seat 3 has a plurality of attachment straps (not shown) attached to the inner and outer edges of the left and right wall forming portions 33, 33 at predetermined intervals. A holding string that can be tied to the wall forming portion 33 may also be attached to the side edge of the extending portion 35. This holding string body is a holding means that holds the extending portion 35 in a state of covering the second working airspace 8 from below. Similarly, the extending part 36 may be bound to the wall forming part 33 via a holding string.

  Then, the main body frame 2 and the seat 3 are integrated by attaching the seat 3 so as to cover the main body frame 2 and tying the above-described mounting straps to the column 11 and the vertical rod 17 and the like. Thus, the work room 6 is defined inside the seat 3 as shown in FIG.

  Here, as shown in FIGS. 1 to 3, the work room 6 is surrounded by the ceiling forming portion 31, the inner wall forming portion 32, the wall forming portions 33 and 33, and the outer wall forming portion 34 of the seat 3 and separated from the outside. . Further, the extending portion 36 of the inner wall forming portion 32 is drawn under the column 11 and laid on the passage 55. The lower portion 37 a of the inner hanging portion 37 is placed on the engaging piece 47 of the second frame 5 and inserted inside, and further laid on the passage 55. Here, the extension part 36 of the inner wall forming part 32 and the lower part 37 a of the inner hanging part 37 overlap on the passage 55, thereby covering the passage 55 in the work room 6. Further, the extending portion 35 of the outer wall forming portion 34 is temporarily attached to the side edge portion of the pedestrian bridge 51 by the holding means K described above. Thereby, the downward opening part of the 2nd frame 5 can be closed by the extension part 35 (refer FIG. 3).

  Next, an outline of the balustrade maintenance painting method for carrying out maintenance painting of the balustrade 52 of the pedestrian bridge 51 using the work chamber forming apparatus 1 including the main body frame 2 and the seat 3 will be described.

  The working chamber forming apparatus 1 places the first frame 4 of the main body frame 2 on the passage 55 of the pedestrian bridge 51 and places the second frame 5 outside the balustrade 52 as shown in FIGS. To.

  Here, in the sheet 3, in the left and right wall forming portions 33, 33, a hook-and-loop fastener portion (not shown) between the second forming portion 33 b and the third forming portion 33 c is disposed at the height of the balustrade 52 from the lower end thereof. The second forming portion 33b and the third forming portion 33c are partially divided so as to be in a non-bonded state up to the position (slit S1 is configured). Then, the balustrade 52 is passed through the slit S1. Thereby, a part of the balustrade 52 can be passed through the work room 6 while maintaining the shape of the work room 6 defined by the sheet 3. At this time, the hook-and-loop fastener part (not shown) between the 1st formation part 33a and the 2nd formation part 33b is made into the adhesion | attachment state.

  Further, in the seat 3, the extending portion 36 of the inner wall forming portion 32 is drawn under the left and right struts 11 on the inner side and laid on the passage 55. Now, the extending part 36 will be in the state where it was stepped on to the caster 16 of the support | pillar 11, respectively. Then, the caster 16 is braked by the stop means of the caster 16.

  Further, in the seat 3, the lower portion 37 a of the inner hanging portion 37 is placed on the engagement piece 47 of the second frame 5 and inserted inside, and partially overlaps the extending portion 36 of the inner wall forming portion 32. It is laid on the passage 55. Further, the extending portion 35 of the outer wall forming portion 34 is bent so as to be pulled toward the passage 55 and attached to the side edge portion of the pedestrian bridge 51 by the holding means K to cover the lower opening portion of the second frame 5. As a result, the lower opening of the second frame 5 is doubly covered by the extending portion 35 of the outer wall forming portion 34 and the lower portion 37 a of the inner hanging portion 37. Thus, the work room 6 is composed of the first work air space 7 formed on the passage 55 of the pedestrian bridge 51 and the second work air space 8 formed outside the balustrade 52 and is closed from the periphery. It becomes an airspace. In addition, when a clearance gap arises between the sheet | seat 3 and the pedestrian bridge 51, it is preferable to take the measure for closing a clearance gap suitably.

  With the work chamber forming apparatus 1 thus arranged on the pedestrian bridge 51, a suction hose of a dust collector (not shown) arranged outside the work room 6 is put into the work room 6. Then, a device for removing old paint, rust and the like on the balustrade 52 and a device for newly painting are placed in the work room 6. And the maintenance coating of the balustrade 52 is performed in the work room 6 while driving the dust collector. Here, by removing a hook-and-loop fastener portion (not shown) between the first forming portion 33a and the second forming portion 33b of the wall forming portion 33 described above (to form the slit S1), the above-mentioned to the work room 6 is performed. The apparatus can be taken in and out, and an operator can go in and out of the work room 6. In addition, the suction hose described above can be drawn into the working room 6 with a part of the hook-and-loop fastener portion (not shown) between the first forming portion 33a and the second forming portion 33b being not bonded. Thereby, the closed state of the work room 6 can be maintained.

  During the execution of the maintenance coating, dust, spray dust, and the like are generated, but the dust can be prevented from scattering from the work room 6 to the outside and sucked by the dust collector through the suction hose. Therefore, it is possible to prevent the passage 55 of the pedestrian bridge 51 from being contaminated with dust or spray dust while preventing dust and spray dust from scattering. In this way, the work process according to the present invention is to place the work chamber forming apparatus 1 at a predetermined position and execute the maintenance coating.

  In the work room 6, the work chamber forming apparatus 1 releases the stop means of the caster 16 and enables the caster 16 to roll when the maintenance painting of a part of the balustrade 52 is completed in the work room 6. Furthermore, the holding means K which attached the extension part 35 of the outer wall formation part 34 to the side edge part of the footbridge 51 is cancelled | released. Thereafter, the work chamber forming apparatus 1 is moved along the balustrade 52, and the portion of the balustrade 52 to be subjected to maintenance coating next is positioned in the work room 6. And as above-mentioned, it brakes with the stop means of the caster 16, and the extension part 35 of the outer wall formation part 34 is attached to the side edge part of the footbridge 51 with a holding means. In this way, the work chamber forming apparatus 1 is disposed at a position where maintenance coating is performed next. Moving the working chamber forming apparatus 1 in this way is a moving process according to the present invention.

  In this way, the entire balustrade 52 can be maintenance-painted by alternately repeating the movement process of sequentially moving the work chamber forming apparatus 1 along the balustrade 52 and the operation process of performing the maintenance coating at the moved position. Furthermore, the balustrade 52 can be similarly maintenance-painted by moving the working chamber forming apparatus 1 to the opposite balustrade 52.

  Here, in the state where the work room forming apparatus 1 is arranged, the passage 55 of the pedestrian bridge 51 is open near the railing 52 on the opposite side where the work room forming apparatus 1 is not arranged, and a pedestrian can be allowed to pass. It is possible (see FIGS. 2 and 3). Therefore, by using the working chamber forming apparatus 1, it is possible to carry out maintenance painting of the balustrade 52 without blocking the pedestrian bridge 51.

  The working chamber forming apparatus 1 of the present embodiment described above removes the seat 3 from the main body frame 2, and the main body frame 2 is attached to the column 11, the upper beams 12a and 12b, the lower beams 13a and 13b, the vertical rod 17 and the upper beam 18a. , 18b and the middle beam 19 can be disassembled. Therefore, the work room forming apparatus 1 can be arranged on the pedestrian bridge 51 by transporting these members onto the pedestrian bridge 51, assembling the main body frame 2 on the pedestrian bridge 51, and attaching a seat. Furthermore, when the maintenance painting work for the balustrade 52 is completed, it can be disassembled and transported as described above, so that the work can be easily cleaned up. And it can be stored in the disassembled state described above, and can be transported to the next site and used as described above.

  Thus, the work chamber forming apparatus 1 can be easily transported and assembled to the pedestrian bridge 51 where the passage 55 is relatively narrow. Since the main body frame 2 has a relatively compact shape and is lightweight, it can be easily transported without being disassembled as described above. And if it is transported without being disassembled, no assembly work is required. Thus, since the work chamber forming apparatus 1 can be easily transported, it is possible to reduce the burden required for work preparation and post-cleaning. Thereby, according to the structure of a present Example, the construction period required for the maintenance painting of the balustrade 52 can be shortened.

  Further, the heights of the columns 11 constituting the main body frame 2 can be changed as described above. Since the working chamber forming apparatus 1 according to the present embodiment performs maintenance coating by moving along the balustrade 52, each of the work chamber forming apparatuses 1 can perform maintenance coating on the balustrade 52 having different heights. By changing the height of the column 11 according to the height of the balustrade 52, a sufficient work space in the work room 6 can be secured. Thus, even when the parts of the balustrade 52 having different heights are subjected to maintenance coating, the maintenance coating work can be stably performed.

  The design of the present invention can be changed as appropriate in addition to the embodiments described above. For example, the second frame may be provided with the same lower beam as the first frame. In addition, the seat may be disposed inside the main body frame instead of covering the main body frame. Further, the shape and dimensions of the main body frame and the seat can be changed as appropriate. Further, in the present embodiment, the main body frame 2 is configured to be disassembled, but may be configured to be incapable of disassembly. Even if it cannot be disassembled, it has a compact shape and is lightweight, so that it can be easily transported and installed, and the burden required for work preparation can be reduced. Moreover, it is also possible to make it the structure which can fold a main body frame, According to this structure, the above-mentioned conveyance and installation work can be reduced. Moreover, the working room forming apparatus of the present invention can be used not only for a railing of a pedestrian bridge but also for a handrail provided in a passage of a park, a handrail of a balcony of an apartment, or the like.

  Furthermore, in addition to the four corner posts, the first frame can also be provided with further posts between the adjacent posts. Here, the added struts may be disposed between all the struts, or may be disposed only between some of the struts. Similarly, a vertical hook can be further arranged between the left and right vertical hooks of the second frame. By adding support posts and vertical rods in this way, the rigidity of the main body frame can be improved, so that the sheet can be prevented from being beaten by a relatively strong wind, or the sheet can be prevented from flapping. The effect of stably holding the room 6 is excellent.

DESCRIPTION OF SYMBOLS 1 Work chamber formation apparatus 2 Main body frame 3 Sheet | seat 4 1st frame 5 2nd frame 6 Work room 7 1st work airspace 8 2nd work airspace 11 Support | pillar 16 Caster 17 Shaft 31 Ceiling formation part 35 Extension part (2nd Working air space extension)
37 Inner drooping portion 45 Reeds 47 Engagement piece 52 Parapet 55 Passage

Claims (6)

It is used for maintenance painting of balustrades erected along the side edges of the bridge passage, and forms a working room that covers a part of the balustrade in the longitudinal direction and is separated from the outside,
A main body frame comprising: a first frame placed on the passage; and a second frame provided on one side of the first frame and disposed outside the balustrade;
A sheet which is attached to the main body frame and forms the working room in which a first working air space on a passage generated in the first frame and a second working air space outside the balustrade formed in the second frame are continuous; Prepared,
Further, the sheet is provided with a pair of left and right slits for passing the balustrade,
A work chamber forming apparatus for balustrade painting, wherein a caster is disposed at a lower end portion of the first frame. The sheet is
A ceiling forming part constituting the ceiling of the work room;
A side wall forming portion constituting a wall around the work room;
Extending from the lower end of the side wall forming portion, and a second working air region extending portion for covering the second working air region from below,
An inner hanging portion for the second working air space, which is suspended downward from the ceiling forming portion so as to line up with the second working air space extending portion in the working room, and the lower portion is inserted into the passage from the outside of the balustrade; With
The work chamber forming apparatus for balustrade painting according to claim 1, further comprising holding means for holding the extension part for the second work air region in a state of covering the second work air region from below. The first frame consists of a substantially rectangular parallelepiped frame structure with four struts provided at the four corners,
The second frame is composed of a skeleton structure having two vertical rods arranged substantially parallel to the two adjacent struts in the first frame outside the first frame,
Further, a horizontal slat that is vertically movable across the two vertical fences of the second frame, and a rail pedestal or a bridge pedestal on which the railing is erected The work chamber forming apparatus for balustrade painting according to claim 1 or 2, further comprising a plurality of engaging pieces detachably engaged with the part.   4. A work chamber forming apparatus for balustrade painting according to claim 3, wherein at least each column of the first frame is provided with a height adjusting mechanism capable of changing the height thereof. A sheet used in the work chamber forming apparatus for balustrade painting according to claim 2,
The ceiling forming portion, the side wall forming portion, the second working air space extending portion, and the inner working hanging portion for the second working air space are attached to a main body frame to form a working room. A sheet characterized by being. A balustrade maintenance painting method for carrying out maintenance painting of a railing of a bridge using the work chamber forming device for balustrade painting according to any one of claims 1 to 4,
A work process of covering a part of the balustrade in the longitudinal direction with the working chamber forming device and maintaining and painting a part of the balustrade in the work room;
A balustrade maintenance coating method comprising: a moving step of moving the work chamber forming device along a longitudinal direction of the balustrade so as to cover a part of the balustrade before the maintenance coating after the maintenance coating is performed in the operation process.

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