KR200402793Y1 - Rail and roller Type device for hanging scaffold of bridge slab - Google Patents

Abstract

The present invention relates to a method of installing and dismantling an aerial scaffold, which is mainly applied to bridges using beams (PC beam bridge, preflex beam bridge, steel bridge, composite beam, etc.), but also applicable to other bridges if necessary. In the case of urban road crossing bridges, people and vehicles pass under the bridges, so scaffolding facilities that need to prevent falling objects are required on the entire lower surface. Dangerous and inefficient in a way.

Therefore, the present invention is to install the aerial scaffolding required for the bridge slab formwork and dongbari construction. Provide scaffolding installation and dismantling methods.

The rail-based scaffolding method, which is installed by repeating assembly at a safe place of bridge shift or pier, prevents falling and falling objects and performs scaffolding assembly process regardless of obstacles under the bridge (vehicle traffic, river runoff, valley, etc.). Cost savings are also possible due to efficient construction.

Description

Rail and roller Type device for hanging scaffold of bridge slab}

The main construction order of the bridges using beam type, except for bridges of special type (I.L.M bridge, FCM bridge, etc.), is as follows. The process consists of foundation work, shift and pier construction, beam construction work, hanging aerial scaffolding, slab cladding and formwork, slab casting work, firewall and auxiliary work, slab cladding and formwork dismantling work, and hanging aerial scaffolding work.

The construction belongs to the bridge slab hanging aerial scaffolding, and the conventional technique can be introduced into about four kinds. The first technique is the patent name "movable club for concrete slab of steel bridge" (see Fig. 19) It was designed for the purpose of installation of steel bridge for steel bridge slab, slab concrete pouring, dismantling and moving. Thus, the prior art relates to a bridge slab club. The present invention relates to a scaffold installation that provides a scaffold for bridge slab copper bar installation, which is largely distinguished from the purpose of the design. Even in the construction stage, the prior art is a device for slab concrete pouring stage, but the present invention is divided into a scaffolding work stage for the installation of the copper bar in the previous stage. In addition, the scope of the application is limited to steel bridges, but this paper applies to all bridges in the form of beams including steel bridges. When dismantling the aerial scaffolding device is characterized by using a segmented rail designed to be dismantled sequentially without using expensive equipment.

      The first method is the patent name "moving clubs for concrete slabs of steel bridges" (see Fig. 15), which is used for placing slabs of steel bridges in concrete, and is designed for rapid installation, dismantling and moving of clubs. Therefore, the present invention, which is designed as a copper bar supporting upper loads when placing slabs concrete, and the present method, which is a method for installing scaffolding to provide a scaffold for workers for slab construction, are largely distinguished in terms of design purpose, application object, and performance process. . The components consist of a rail, a hanger with rollers, a frame designed to receive force as a club, and a jack that can adjust fine height as a club, and also a set of clubs and a set of clubs. It is characterized by the possibility of slab concrete pouring while moving continuously. Even if you want to use the prior art as a scaffolding, as a workbench of a set (Set) to provide a scaffold only narrowly in the corresponding section. Therefore, it is not suitable for downtown road crossing bridges that need to prevent falling objects. Bridge slab bundling and plywood work is carried out throughout the bridge. Therefore, the required scaffold requires a wide scaffold corresponding to the entire section of the bridge bottom surface, but the prior art can also be distinguished from the present invention in that it provides only the corresponding section. The present invention is mobile until the scaffolding is installed, and when the scaffolding function is fixed, the mobile club is fixed while the unit moves, and the whole process is mobile.

The second technique relates to utility model designation "Movement for bridge construction and inspection and repair work" (see Figure 20). It is a mobile work cart that can perform bridge construction work, inspection and repair work at the same time. In other words, the rail is installed on the bridge deck or beams, and the scaffolds are hung on the wheels to move and construct or repair the bridge. The present invention, which provides a scaffold for slab construction after or after slab casting, is widely distinguished in terms of design purpose and application, construction stage, and process. In addition, a set of workbench units move and perform functions. The present invention is mobile at assembly and disassembly, but it is fixed at the use stage to improve worker safety. The third technology is the utility model name "Moving bridge for inspection and repair of arch bridges" (see Fig. 21). The cross beams are hung on the side of the already built arch bridges, and rails, rollers and horizontal scaffolds are attached to the cross beams. Its purpose is to check and repair. In the bridge formed in the arch form, the footrest coupled in the form of a hinge is characterized in that the working vehicle remains horizontal while moving. As the construction method applied to the already constructed bridges, the present invention, which provides scaffolding for slab construction, is largely divided in terms of application and construction stages, and the application bridges are limited to arch bridges. In addition, a set of worktables are continuously moving while working, which is different from the fixed scaffolding consisting of a plurality of scaffoldings of the present invention. Claims are also characterized as "mobile devices for inspection and repair of arch bridges", that is, mobile devices. The fourth technique is a technique commonly used in bridge construction. A technician works on the beam to tie both ends of the steel pipe to the bottom of the beam, closes it to the bottom of the beam, and then binds the steel wire to the exposed reinforcing bar at the top of the beam. That's how. There is a risk of having the technician walk through the exposed rebars on the beam, tying up numerous steel pipes and wires, and falling off the beam due to the exposed rebars. The construction of plywood scaffolding on steel pipes is also a very dangerous task to be carried on slippery steel pipes, and poor plywood and wire binding often lead to accidents.

The third method is the utility model name "Moving bridge for inspection and repair of arch bridges" (see Fig. 17). The cross beams are hung on the side of the already built arch bridges, and rails, rollers and horizontal scaffolds are attached to the cross beams, and the bridges are regularly bridged. In the bridge formed in the form of jade, the hinged scaffolding is characterized in that the working vehicle remains horizontal while moving. As a method applied to the already constructed bridges, the present invention, which provides scaffolding for slab construction, is largely divided in the applied method, and the applicable bridges are also classified as arch bridges and beam bridges. In addition, a set of workbenches continue to move while working, which is different from the fixed scaffold consisting of a large number of the present invention. The claim also states that it is a "mobile bridge for inspection and repair of arch bridges."

In the fourth method, a skilled worker binds both ends of a steel pipe to a bottom of the bridge beam by binding it with steel wires on a beam, and then binds the steel wire to the rebar exposed at the top of the beam, and then forms a scaffold between the steel pipe pipes using plywood. Way. This method is commonly used but has the following disadvantages. There is a risk of having the technician walk between the exposed rebars on the beam and having to repeat the operation of tying up numerous steel pipes and wires, and the risk of falling from falling on the beam due to the exposed rebar. The construction of plywood scaffolding on steel pipes is also a very dangerous task of walking on slippery steel pipes, and the poor binding of plywood and steel wires can cause worker falls or falling objects.

The present invention can be applied to the bridge using the beam, but can be applied to the urban road crossing bridge first. This is because people and vehicles pass under the bridge, and the entire underside needs scaffolding to prevent falling objects. The prior art is dangerous and inefficient, as simple as a mobile inspection scaffolding device that provides scaffolding only in that section or assembling steel pipe scaffolding. Therefore, the object of the present invention is to assemble the footrest rack and the scaffolding along the rails installed on the beam in the alternating frontal part or the pier check scaffold, which are easily accessible and safe, and then repeatedly push the bridge slab scaffolding down the bridge slab scaffold. It can be provided throughout the work area. The completed scaffolding forms a fixed scaffolding system after a plurality of unit scaffolds are combined, rather than a unit scaffold composed of a SET, as in the prior art. Supported by these multiple scaffold racks, they do not fall. In the case of bridge slab bundling and formwork, many people work at the bottom of the bridge at the same time. The provided function is very useful for bridge construction. After completion of the bridge work, the scaffolds are removed in reverse order, but the scaffolds that have already been used for safety can be removed by removing the segmented rails from the scaffold in turn. Therefore, the worker can be assembled and disassembled in a safe place in a safe place without being directly put on the beam or in the air during the scaffold installation work, which is a dangerous step, and can be installed regardless of the obstacles under the bridge, and it is light and flexible without gaps. Its purpose is to provide uneven steel scaffolding structure to prevent falling and falling accidents, and to quickly install stable scaffolding on the bottom of wide bridges to improve work efficiency, safety and constructability.

The present invention will be described according to the drawings. The present invention is applicable to all the bridges that mainly use the beam as a slight change of the rail fixing device (nut), and to explain the application example for the PC beam bridge in detail for the concrete design.

FIG. 1 is a perspective view showing the rail 1 of the present invention, and FIG. 2 is a front view of which the “U” shaped member 1-b is used as a rail, and the rail is installed on the PC beam 4. It consists of a rail fixing member 1-a. Since the mounting holes of the rail fixing members 1-a are formed in a rectangular shape, even if the rail fixing bolt nuts 3 embedded and embedded in the PC beam 4 are somewhat irregular, the gaps can be adjusted and installed. In the bridge slab suspension scaffolding system, since the rail is intended to drive the wheel, it is common practice to use a long member by requiring a continuous shape. However, long rails installed on hanging scaffolds are difficult to dismantle due to weight and length during dismantling, which requires expensive work vehicles and may fall with scaffolds located in long rails during dismantling. Therefore, the segmented rails that are continuously divided by the length of the scaffold in the direction of travel can be dismantled from the end scaffold in the form of an inner mine beam, one by one, when dismantling, so that it can be safely dismantled without falling of the hanging scaffold.

3 is a perspective view showing the footrest stand 2 of the present invention, and FIG. 4 is a front view, and the wheel 2-b is fixed to the upper end of the square member 2-a by a bolt 2-c, and the rail departure prevention jaw ( 2-d) supported the lower end of the "U-shaped square member 1-b, so that the wheel 2-b was detached from the rail 1 so that no fall occurred. Is welded at right angles and two scaffold fixing bolts (2-f) are welded to both ends of the plate member (2-e), so that the general scaffold flexural reinforcement member (5), the tip scaffold flexural reinforcement member (6), and the uneven The footrest 7 and the wire mesh footrest 7-a can be easily mounted and fitted together to form a single body, which will be described in detail below, but a plurality of footrests 2 are supported in the fall due to some defects. Prevent sudden fall.

5 is a cross-sectional view showing the rail fixing bolt nut 3 of the present invention. First, a part of the rail fixing bolt 3-b is fastened to the rail fixing nut 3-a, and the PC is fixed to the rail fixing bolt 3-c. Fasten and fasten outside the beam steel formwork (3-d). At this time, install the rail fixing nut (3-a) about 1cm away from the PC beam steel formwork (3-d). The rail fixing bolt (3-b) is firmly fixed so that the rail fixing nut (3-a) does not easily fall out of the PC beam concrete, and also serves as a stopper to prevent the rail fixing nut (3-a) from being pushed into the rail fixing nut (3-a). will be. By installing the rail fixing nut (3-a) at a certain distance from the PC beam steel formwork (3-d), the area of the hole appearing on the surface of the PC beam (4) is minimized, so that less marks can be made when filling up concrete after disassembling the rail. It is effective to improve the appearance.

6 is an assembled perspective view showing in detail the process of fixing and installing the rail 1, the footrest rack 2, and the rail fixing bolt nut 3 to the PC beam 4 in detail.

7 is a perspective view showing that the rail fixing bolt (3-c) is installed in the PC beam (4) overlap in installing the rail (1) and the rail (1) is to place the PC beam (4) on the piers (8) Install just before lifting.

8 is a perspective view of assembling the scaffolding stand 2 after the process of FIG. 7. After the PC beam 4 is placed on the piers 8, the scaffolding stand 2 is assembled.

9 is a perspective view showing the fastening of the foot flexure reinforcing member to the footrest rack (2). Flexural reinforcement member is a reinforcement that reinforces in a direction in which the bending force is weak so as not to bend the uneven scaffold (7) to the scaffolding function to put on the scaffold hanger (2). Bolt holes are drilled at both ends of the longitudinal rectangular member, and there are a general scaffold flexural reinforcement member 5 and a tip scaffold flexural reinforcement member 6. The tip foot flexural reinforcing member 6 is fastened to the first step of the scaffolding hanger 2 to be installed, and the member is welded and reinforced in a diagonal direction to the general scaffold flexural reinforcing member 5 to serve as a ca tilver. A worker sits on the footrest installed on the leading foot flexural reinforcement member 6 and disassembles the rail 1 sequentially from the PC beam 4 and pushes out the hole of the rail fixing nut 3-a to concrete. The general scaffold flexural reinforcement member (5) is installed in the whole section except for the tip part, and it is placed on the plate member (2-e) of the scaffolding stand (2) and the uneven scaffolding (7) is lifted to fix the stator Fix it with 2-f). The flexural reinforcing members 5 are integrally connected to each other and integrally connected to the scaffold in a right angle direction. Therefore, even if a part of the footrest stand (2) falls into a defect, a plurality of foot rests (2) are supported by the integrated flexural reinforcing member (5) and the uneven footrest (7). Show them in advance so they can take action.

FIG. 10 is a perspective view showing a step of sequentially assembling and pushing sequentially after raising the uneven scaffold 7 to the scaffold hanger 2 after the process of FIG. 9 by fastening the scaffold fixing bolt 2-f. The uneven scaffold 7 is a member that bends steel plate flexibly to reinforce bending in only one direction. The direction of weak bending stress is combined with the general scaffold flexural reinforcing member 5 to be used in structural complementary use. As a steel, it is light and solid. In addition, there is no human and important facilities at the bottom of the bridge so that even if the falling objects fall, the wire mesh type (7-a) scaffolding can be used to save materials and to facilitate transportation and cleaning.

11 is a perspective view showing a state in which the present invention is installed as a whole.

Figure 12 shows the appearance of performing the work process using the rail-type bridge slab hanging scaffold installation method of the present invention. By repeating the step of assembling the scaffolding stand 2 and the uneven scaffold 7 on the bridge inspection scaffold 9, the aerial scaffold for bridge slab work can be provided on the entire surface of the bridge lower work section. After finishing the bridge work, the air scaffold dismantling work is as follows. The worker on the bridge inspection scaffold 9 removes a pair of left and right pairs of scaffolding stand 2 and one scaffold 7, that is, a set of aerial scaffolds, and pulls the entire aerial scaffold by the removed length. Another worker (12) is sitting on the uneven footrest (7) installed on the tip footrest reinforcement member of the cantilever type (6) to loosen the left and right pair of rail fixing bolts (3-c) and the rail (1) ) And fill the bolt grooves with concrete. When the above operation is repeated, the demolition work is completed. Pulling operations are subject to manpower or machinery, depending on site conditions.

13 to 16 are exemplary views for explaining an aerial scaffold using steel pipes and plywood in the prior art.

FIG. 13 is a front view in which the PC beam 4 is hypothesized after the bridge 8, which is a substructure of the bridge, is completed, and FIG. 14 is a side view. Although the bridges and bridges can be easily accessed by workers and workers, there are many obstacles (18) such as roads, rough valleys, buildings, and rivers. In general road sections that can be compensated for the land and are easily accessible and the level of fill is not too high, most roads are designed by earthwork which is advantageous in terms of construction cost, and most of them are designed as bridges. 18) will exist. The bridge inspection scaffold 9 is an inspection scaffold installed for bridge maintenance and can be installed at any time before or after the installation of the PC beam 4. Bridge inspection scaffold 9 is used as a safe space for the worker 12 is located and work when installing and dismantling the present invention.

The fifteenth is a front view showing the existing work process, the worker 12 located in the left working section of the PC beam (4) lifts the steel pipe pipe (10) on the PC beam (4) that is in danger of falling the PC beam (4) It is shown in close contact with the lower portion tied to the steel reinforcement (11) in the exposed reinforcing bars (14), and the work section of the PC beam (4) is walking on the slippery steel pipe (10) and the work platform made of plywood (16) ) Is shown installed on the steel pipe (10) and the right working section of the PC beam (4) is the appearance of installing the copper bar (13), which is a support member for placing the PC beam slab (17) concrete. Under the bridge, there are obstacles such as vehicles, so there is a risk of accident due to falling when installing the steel pipe (10) and walk on the PC beam (4). This is a very dangerous way of working that can lead to a falling accident caught on exposed rebar 14. When the steel pipe pipe 10 is tied to the hole of the binding wire and the working scaffold 16, which is constructed of plywood, the worker and the concrete may fall.

16 is a side view of the fifteenth.

FIG. 17 is a perspective view of a rail for a steel bridge designed to effectively install the rail of the present invention on a steel bridge, and FIG. 18 is a front view. The steel bridge has a steel plate protruding part on the bottom surface of the beam, so it can be easily supported by the rail fixed "c" shaped member (19-a) and fixed by the rail fixing bolt (19-b). It consists of (19-c).

FIG. 19 relates to a copper bar used when pouring steel bridge slab concrete as a "movable copper bar for concrete slab of steel bridge" in the prior art. Although the components are similar in number to the present invention, they differ in purpose, application, and work process. Even if it is used as a scaffolding, it will provide scaffolding only for the corresponding section of the group, and it does not have the function of preventing falling objects and also guarantees the safety and installation of the group. FIG. 20 relates to a "moving device for bridge construction and inspection and repair work" in the related art, and is a mobile work cart which can simultaneously perform construction work, inspection and repair work for a bridge. The crane is installed on the upper portion of the structure, characterized in that the upper and lower operations are performed at the same time.

   FIG. 17 is a prior art "moving device for inspection and repair of arch bridges", which aims to regularly check and repair bridge defects by attaching rails, rollers, and horizontal scaffolds to the side of the already constructed arch bridges. As a method applied to the already constructed bridges, the present invention, which provides scaffolding for slab construction, is largely divided in the applied method, and the applicable bridges are also classified as arch bridges and beam bridges. In addition, a set of worktables are continuously moving while working, which is different from the fixed scaffold consisting of many of the present invention. The claim also states that it is a mobile device for inspection and repair of arch bridges.

FIG. 21 is a "mobile device for inspection and repair of arch bridges" in the prior art, which aims to periodically check and repair bridge defects by attaching rails, rollers, and horizontal scaffolds to the side of the arch bridge already constructed. As a method applied to the already constructed bridges, the present invention, which provides scaffolding for slab construction, is largely divided in the applied method, and the applicable bridges are also classified as arch bridges and beam bridges. Bridge slab work is carried out in all parts of the bridge, formwork, and the construction of a large number of personnel and materials intertwined. Therefore, scaffolding should be provided on the entire underside of the working bridge for efficient construction. However, the conventional technology enables only a small work by providing a work period only in the corresponding section with a unit mobile scaffold. Therefore, when the slab work is used as a scaffold to assemble the scaffolding with steel pipes and plywood, the conventional mobile work equipment is used only when dismantling after the slab work is completed. In practice, the applicability is limited to dismantling and inspection, not to function as a scaffold for bridge slab work. In the conventional technique introduced above, the rail is installed on the bridge slab, and the concrete can be installed after the bridge upper slab is poured. Therefore, the construction stage of the present invention does not correspond to the slab construction and formwork construction stage. The rails of the scaffold installed at the slab copper and formwork stage cannot be laid on the slab concrete which has not yet been constructed, so the rails are installed on the side and the bottom of the beam to be raised. In the method of installing the rail under the bridge or the side, the beam is installed after the rail is attached to the beam. However, if the rail is installed without prior consideration of the rail demolition method, the rail is difficult to dismantle. Expensive work vehicles and other equipment are needed to dismantle long rails from the air. Moreover, if there are obstacles under the bridge, the difficulty is increased such that entry of the working vehicle is impossible. When dismantling the long rail, the hanging work scaffolding accidents occur together. Therefore, the present invention provides a distal step of scaffolding and a segmented rail work process that can be safely dismantled.

It can be installed regardless of obstacles under the bridge, so it is effective in river and high pier. The entire scaffold combined with multiple unit scaffolds is particularly effective in urban road crossings because it prevents workers from falling and fundamentally blocks accidents caused by falling objects. In addition, the conventional mobile work device or the cart is composed of a single unit scaffolding can cause a fall accident due to mechanical defects or immaturity of the operation of the truck, and the fall accidents often occur in actual workplaces. The reason is that it is formed as a scaffolding structure. However, the scaffold assembled as a whole in the present invention is the bending reinforcement (5) is bolted to each other in the advancing direction and the uneven scaffold is bolted to each other in the progressing right direction is combined the whole scaffolding into one. The combined scaffold is supported by hanging dozens of scaffolding hanger (2), so that even if the fall of one or two scaffolding hanger (2), the entire scaffold does not fall and sag, so as to inform the fall symptom. Scaffolding, which does not fall and provides only indications, can be a very beneficial system for safety.

Bridge slab work is carried out in all parts of the bridge, formwork, and the construction of a large number of personnel and materials intertwined. Therefore, scaffolding should be provided on the entire underside of the working bridge for efficient construction. However, the conventional technology enables only a small work by providing a work period only in the corresponding section with a unit mobile scaffold. Therefore, when the slab work is used as a scaffold to assemble the scaffolding with steel pipes and plywood, the conventional mobile work equipment is used only when dismantling after the slab work is completed. In practice, the applicability is limited to dismantling and inspection, not to function as a scaffold for bridge slab work.

In the prior art, when the rail is installed on the bridge slab, the rail can be easily dismantled after the work is completed. However, when the rail is installed on the lower side or the side of the bridge, it is difficult to dismantle the rail. The rail can be installed on the upper part of the bridge after the slab is placed on the upper part of the bridge. Therefore, it does not correspond to the slab copper bar and formwork scaffolding construction stage of the present invention. Therefore, the scaffold rails installed at the slab copper and formwork construction stages will be installed on the side and the bottom of the beam that cannot be laid on the slab that has not yet been constructed and are installed. When installing the rail after attaching the rail to the beam, it will be difficult to dismantle the rail unless the rail is installed in detail before the method of dismantling. When dismantling a long rail, the hanging work platform falls together and accidents often occur. Therefore, the present invention provides a work process for applying a cantilever type front footrest and a segmented rail so that it can be safely dismantled.

The present invention provides the overall aerial scaffolding by attaching the rails in advance in the beam bridge, installing the beams, and then assembling the scaffolding rack and the scaffolding in succession, and dismantling them in reverse order after use. To provide. Conventional mobile scaffolding has a risk of falling during the process of moving because it performs work on a working set of moving set (Set), but the present design does not have an operator boarding during installation and the individual scaffold to be moved is fixed after it is formed as a whole scaffolding It stops the movement, checks the safety status, starts to use the scaffolding, and even if it falls down due to the defect of some scaffolding stand, it does not fall momentarily and it has an alarm function that can take action by informing the signs with a slight sag. In addition, it provides a solid scaffold with no shaking between the lower part of the bridge and enables a large number of personnel to input, thus increasing work efficiency. The installed scaffolding is combined without gaps to block falling objects, so it is effective for cross-section roads in urban areas that need to protect vehicles and lives.The scaffold itself moves when assembling and disassembling, so it can be installed regardless of the lower obstacles. Significantly improves safety compared to steel pipe scaffolding technology, which relies on mobile work carts and manual work, such as unnecessary use, and shorten working time and reduce labor costs by mechanized assembly and propulsion with fewer people. It provides wide and solid scaffolding to increase workability and enables cost savings through repeated use of materials.

1 is a perspective view of a specific example of a rail of the present invention, and FIG. 2 is a front view of the rail. 3 is a perspective view of a specific example of the footrest rack and FIG. 4 is a front view of the footrest rack. 5 is a cross-sectional view of the rail fixing nut and fixing bolt of the present invention to be embedded in the PC beam. 6 is an assembly perspective view showing the assembling relationship of installing the rail to the PC beam with the rail fixing bolt and installing the footrest rack to the rail. 7 is an assembled perspective view of overlapping rails to fix the beams to rail fixing bolts. 8 is an assembled perspective view of assembling the rail holder to the rail after the process of FIG. 9 is an assembled perspective view of installing the tip and the normal footrest reinforcement member on the footrest stand. 10 is an assembled perspective view of installing the uneven scaffold or wire mesh scaffold on the scaffold flexural reinforcing member after the process of FIG. 11 is a perspective view showing the process of moving forward while assembling the rail-type bridge slab suspension aerial scaffold step by step. 12 is a side view showing a process of assembling, propulsion, or reverse propulsion and dismantling of a rail-type bridge slab suspension aerial scaffold sequentially. FIG. 13 is a front view of an embodiment where a beam is hypothesized on a pier which is a substructure of the bridge. Figure 14 is a side view of the process of Figure 13; FIG. 15 is a front view of installing a middle scaffold using a steel pipe pipe in a conventional manner on a PC beam after FIG. 13 and FIG. 16 is a side view. 17 is a perspective view of a specific example of a rail for a steel bridge designed for easy installation on a steel bridge, and FIG. 18 is a front view. FIG. 19 is a "movable club for concrete slab of steel bridge" designed for rapid installation, dismantling and movement of steel slab concrete in the prior art, and FIG. 20 is a mobile device for bridge construction, inspection and repair work in the prior art. "The rail is installed on the bridge slab and the check cart is operated. 21 is a moving device for checking defects after bridge construction as a "mobile device for inspection and repair of a bridge bridge" in the prior art.

* Description of symbols for important parts of the drawings *

DESCRIPTION OF SYMBOLS 1 Rail 1-a: Rectangle rail fixing member 1-b: "U" square each member 2: Footrest rack 2-a: Square member 2-b: Wheel 2-c: Bolt 2-d: Rail release prevention 2- e: Plate member 2-f: Scaffold fixing bolt 3: Rail fixing bolt nut 3-a: Rail fixing nut 3-b: Rail fixing bolt 3-c: Rail fixing bolt 3-d: PC beam steel formwork 4: PC beam 5: General scaffold flexural reinforcement member 6: Tip scaffold Flexural reinforcement member 7: Uneven scaffold 7-a: Wire mesh scaffold 8: Pier 9: Bridge inspection scaffold 10: Steel pipe pipe 11: Steel wire 12: Worker 13: Circle 14: Exposure Reinforcing bar 15: Slab formwork 16: Work scaffold 17: Slab 18: Obstacle 19: Steel bridge rail 19-a: Rail fixing "c" type member 19-b: Rail fixing bolt 19-c: Coating protection rubber plate

Claims (9)

 Rail (1) fixed to the lower side of the beam before beam construction, rail fixing bolt nut (3) for fixing it, footrest rack (2) to be fitted to rail (1) after beam construction, plate member (2) of footrest rack (2) Rail type bridge slab hanging aerial scaffolding device, characterized in that consisting of the general scaffold flexural reinforcement member (5) and the leading scaffold flexural reinforcement member (6) and the uneven scaffold (7) fastened to the -e).  The rail-type bridge slab hanging aerial scaffolding device according to claim 1, wherein the rail (1) comprises a longitudinal rail fixing member (1-a). The rail-type bridge slab hanging aerial scaffolding device according to claim 1, characterized in that the rail (1) is segmented rail (1).  The rail-type bridge slab hanging aerial scaffolding device according to claim 1, wherein the scaffolding rack (2) comprises wheels (2-b). The rail-type bridge slab hanging aerial scaffolding device according to claim 1, wherein the rail fixing bolt nut (3) is a rail fixing bolt nut (3) embedded in concrete. The rail type bridge slab suspension aerial scaffolding device according to claim 1, wherein the front footrest reinforcement member (6) is characterized by a footrest reinforcement member of a cantilever type.  The rail-type bridge slab hanging aerial scaffolding device according to claim 1, wherein the rail (1) is a steel bridge rail (19). The rail-type bridge slab hanging aerial scaffolding device according to claim 1, wherein the uneven scaffold (7) is a wire mesh scaffold (7-a) in the form of a wire mesh. The rail-type bridge slab hanging aerial scaffolding device according to claim 1, characterized in that the uneven scaffold (7) is a continuous uneven scaffold (7).