JP6860323B2 - Mobile workbench for structure repair - Google Patents

Description

The present invention is a mobile type for repairing a concrete structure for repairing a concrete structure having a wall surface such as a quay, a breakwater, a dam, etc., which is not limited to a flat surface but also has a wall surface consisting of an inclined surface, a stepped curved surface, a curved surface, etc. Regarding the workbench.

For example, concrete breakwaters are installed on the coast to protect roads, passing vehicles, and pedestrians from the waves that hit the coast, but on the coast where high waves hit, concrete semi-arc-shaped structures are constructed to cover the road. Is being done. However, breakwaters affected by such waves are exposed to wave power and salt for a long period of time, so that the concrete layer gradually deteriorates, cracks are formed, and eventually the breakwater is damaged.
Therefore, it is necessary to repair and reinforce the concrete structure, but in the case of the breakwater, the scaffolding is conventionally assembled and installed from the seabed along the structure, and the worker scrapes the damaged part on this scaffolding. Work such as applying mortar or pressurizing and filling cracks with mortar is performed, and when the repair work is completed within the range of the scaffold, the scaffold is moved to the next repair location and the repair work is performed. When finished, we are working on dismantling the scaffolding.

However, when the wall surface of the structure is an inclined surface, a stepped curved surface, or a curved surface, it may be difficult or impossible to build a scaffold along the wall surface, and repair work for such a non-flat surface surface. There is a need for a means that can respond to this.
In addition, since repair points such as banks and breakwaters face the sea and rivers, scaffolding must be assembled from the seabed or riverbed in order to carry out repair work. The scaffolding should be dismantled each time when it is expected that the sea will be rough due to the approach of a typhoon or low pressure, and the problem that the construction cannot proceed smoothly due to various reasons such as it takes days and is affected by wave force during construction. It has to be removed, which causes a problem that the progress of construction is greatly affected, and a problem that the work cost is very high.

Furthermore, in the construction method in which the repair work of a long structure is performed using a conventional scaffold, the scaffold is assembled, the repair work is performed, the scaffold is disassembled, the scaffold is moved laterally, the scaffold is assembled again, and the repair work is performed. Since it is necessary to repeat the work, there is a limit to improving the work efficiency, and there is a problem that it takes a long time to complete the work and the work cost increases.

I couldn't find it.

The present invention has been made in view of the above-mentioned problems of the prior art, and is capable of repairing irregularly shaped wall surfaces such as inclined surfaces, stepped bent surfaces or curved surfaces of concrete structures, and it is necessary to assemble scaffolding from the seabed or riverbed. Since there is no concrete, it is hardly affected by wave power, and the removal work due to stormy weather can be done quickly, so the repair work itself can be done efficiently, and the scaffolding can be removed promptly after the arrival or passage of a typhoon, etc. The purpose is to provide a mobile workbench for repairing structures, which can be installed, so that the work period can be significantly shortened as compared with the conventional technology, and the work cost can be significantly reduced.

The means of the present invention configured to solve the above-mentioned problems is a support trolley that can move on the structure, and is projected from the support trolley in a direction perpendicular to the moving direction of the support trolley and rolls on the structure. a pair of right and left moving support comprising a support frame section having a mast having wheels for moving distally, positioned on the lower side of the respective mobile support, pivotally connected base end to said support carriage A pair of left and right base end side scaffolding bodies composed of a pair of base end side scaffolding materials having a shock absorber that abuts on the structure on the tip end side, and the base end side engages with the tip end side of the base end side scaffolding body. A pair of left and right tip-side scaffolds composed of a pair of tip-side scaffolding materials that are rotatably and rotatably connected and have wheels on the tip-side lower surface, and the base end-side scaffolding body and the tip-side scaffolding body, respectively. Between a plurality of elevating treads detachably installed between each pair of scaffolding materials, and a drive source arranged on the ground side and the tip side scaffolding body via a slide provided on the upper end side of the mast. It comprises a scaffolding body elevating mechanism that elevates and retracts the pair of left and right base end side scaffolding bodies and the tip end side scaffolding body with respect to the structure by expanding and contracting the stretched elevating wire.

Then, the support carriage may be configured such that the traveling wheels are engaged with the guide rails laid on the structure.

Further, between the pair of left and right base end side scaffold bodies and the tip end side scaffolding body, the base end side is connected to the base end side scaffold body, and the tip end side is connected to the base end side of the tip end side scaffold body. A pair of left and right intermediate scaffolding bodies configured by providing a buffer body in contact with the structure may be provided on the tip end side so as to be detachable.

Further, the base end side scaffolding body, the intermediate scaffolding body, and the tip end side scaffolding body may have a configuration in which elevating treads are arranged in a row in the longitudinal direction.

Further, the pair of left and right intermediate scaffolding bodies may be held at predetermined intervals by installing an expansion prevention rod.

Further, a safety fence or a safety rope may be detachably provided on the base end side scaffolding body, the intermediate scaffolding body, and the tip end side scaffolding body.

Since the present invention is configured as described above, the following effects are obtained.
(1) Since the scaffolding body facing the wall surface of the structure is supported by the support carriage placed on the upper surface of the structure, it is not necessary to assemble the scaffolding in the water affected by wave power and running water force, and the scaffolding is assembled. Since there is no conventional work such as dismantling, the efficiency of the entire repair work can be improved, and the work period can be significantly shortened as compared with the conventional technology, so that the cost of the repair work can be significantly reduced. ..
(2) Since the support carriage can move along the structure, the repair work of the long structure can be performed smoothly and efficiently.
(3) Since the support carriage is configured such that the traveling wheels engage with the guide rails, the scaffolding body can be supported reliably and stably, and the support carriage and the scaffolding body can move smoothly. ..
(4) By providing an intermediate scaffolding body between the base end side scaffolding body and the tip end side scaffolding body so as to be detachable, it is possible to support repair work on a tall repair wall surface.
(5) The base end side scaffolding body, the intermediate scaffolding body, and the tip end side scaffolding body can be repaired efficiently, smoothly, and safely by arranging the elevating treads in a row in the longitudinal direction. ..
(6) Since the intermediate scaffolding body is held at regular intervals by installing an expansion prevention rod between the pair of intermediate connecting scaffolding materials, the repair work can be performed safely and with peace of mind.
(7) Since safety fences or safety ropes are detachably provided on the base end side scaffolding body, the intermediate scaffolding body, and the tip side scaffolding body, the worker can engage in the work with peace of mind and fall during the repair work. It is possible to prevent accidents such as.

It is a side view which shows the whole structure of the mobile work table for repairing a structure which concerns on embodiment of this invention. It is a front view of the mobile work table for repairing a structure. It is a partial plan view of a mobile work table for repairing a structure. It is a partial plan view of a support carriage. It is a side view of a support carriage. It is explanatory drawing of the scaffolding body which constitutes the mobile work table for structure repair. It is explanatory drawing of the removal work of the mobile work table for repairing a structure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the breakwater of the structure to be repaired using the mobile work table for repairing the structure according to the present embodiment will be described. In FIGS. 1 and 7, 51 is a roadway provided along the coast, and the left side of the roadway 51 is the sea. Reference numeral 52 denotes a breakwater constructed on the coast along the road 51 so that the road 51 is not covered with waves. The breakwater 52 is formed in a curved shape covering the road 51, and is several hundred meters along the road 51. It consists of length.

In FIGS. 1 and 3, reference numerals 1 and 1 indicate a pair of guide rails laid parallel to the curved upper surface 52A of the breakwater 52 and fixed with anchors. The guide rails 1 and 1 are constructed by laying U-shaped channel materials 1A and 1A and fixing a guide plate 1B made of a long steel plate to the upper surface of each channel material 1A. Then, the pair of guide rails 1 and 1 are flush with each other by interposing spacers 1C and 1D having different thicknesses between the guide rails 1 and the breakwater 52 so that the support carriage 2 described later can move stably. It is set to be.

Reference numeral 2 denotes a mobile workbench for repairing a structure, and indicates a support carriage that moves on guide rails 1 and 1 in the direction of arrow a. The support carriage 2 consists of a rectangular deck 3 in which a mesh steel plate tread plate 3B is stretched in a frame body 3A in which steel materials are assembled in a substantially quadrangular shape, and a pair of left and right decks assembled at both front and rear positions of the deck 3. It is composed of traveling mechanisms 4 and 4 and a safety fence 5 erected on the frame body 3A, and travels by a towing vehicle (not shown).
Here, as shown in FIGS. 4 and 5, each of the traveling mechanisms 4 is pivotally supported by a quadrangular frame portion 4A and the frame portion 4A, and sandwiches the guide plates 1B of each guide rail 1 from both sides. It is composed of a pair of outer and inner holding wheels 4B and 4C, and a traveling wheel 4D that is pivotally supported by the frame portion 4A and rolls on the guide plate 1B. The outer holding wheel 4B is a guide plate. By using a grooved wheel that holds the edge of 1B, the support carriage 2 is securely engaged with the guide rails 1 and 1 so that the wheel can run safely without floating.
Further, a pair of connecting pieces 4E and 4E for connecting the scaffolding bodies 9 on the base end side, which will be described later, are projected from the frame portion 4A at the left and right positions when viewed from the front, and the tip side of each connecting piece 4E. A pin hole 4F is formed in the hole.

Reference numerals 6 and 6 indicate a pair of left and right moving supports in which the base end side is fixed to the right and left positions of the support carriage 1 and the tip end side projects in a direction perpendicular to the moving direction a of the support carriage 2. 7 shows the supporting lifting frame section that make up the respective mobile support 6, said supporting Jiwaku unit 7 steel 7A, 7A, constitutes formed a ... a box-shaped horizontal rectangle, the base end side Each of them is fixed to the deck 3, and the tip side is projected laterally from the breakwater 52.

Reference numerals 8 and 8 indicate a pair of masts erected at the tips of the support frame portions 7 and 7, respectively. Each mast 8 has mast materials 8A and 8A made of a pair of steel materials fixed to the tip of the support frame portion 7 and erected, and connecting members 8B, 8C and 8D are erected at the upper end, middle and lower ends of the mast. The material 8A is supported by the diagonal support material 8E, and the moving supports 6 and 6 are integrated with the support carriage 2 by providing the support wheels 8E that roll on the breakwater 52 at the lower end of each mast 8. It can be moved in the left-right direction.

Reference numerals 9 and 9 indicate a pair of left and right base end side scaffolding bodies arranged on the upper surface 52A of the breakwater 52 by being located below the pair of moving supports 6 and 6 and being connected to the support carriage 2. Each of the base end side scaffolding bodies 9 is made of a steel material, and is erected between a pair of base end side scaffolding materials 9A and 9A in parallel and the base end side scaffolding materials 9A and 9A and arranged in a row in the longitudinal direction. It is composed of scaffolding plates 9B, 9B, ..., And side handrails 9C. Each base end side scaffolding material 9A has a pin hole 9E formed in the base end side 9D, and the breakwater is connected by inserting the connecting pin 10 into the pin hole 4F of the connecting piece 4E of the support carriage 2. It is rotatable in the vertical direction along the curved upper surface 52A of the 52. Further, a shock absorber 11 composed of a mounting plate, a spring and a rod is provided on the tip end side 9F of the base end side scaffolding material 9A so as to cushion the impact on the upper surface 52A of the breakwater 52.

Reference numerals 12 and 12 indicate a pair of left and right intermediate scaffolding bodies connected to the tip end side 9Fs of the pair of base end side scaffolding bodies 9 and 9 and arranged on the upper surface 52A of the breakwater 52. Each of the intermediate scaffolding bodies 12 is made of a steel material, and a pair of parallel intermediate connecting scaffolding materials 12A and 12A and a plurality of elevating treads 12B erected between the intermediate connecting scaffolding materials 12A and 12A and arranged in a row in the longitudinal direction. It is composed of 12B, ..., And a side handrail 12C, and the buffer 11 is similarly provided on the tip end side 12D of the intermediate connecting scaffolding material 12A.
Each of the intermediate connecting scaffolding materials 12A has the base end side 12E connected to the tip end side 9D of the base end side scaffolding material 9A by a connecting pin 10, and rotates in the vertical direction along the curved upper surface 52A of the breakwater 52. It is possible.

Reference numerals 13 and 13 indicate a pair of left and right tip side scaffolding bodies connected to the tip end side 12D of the pair of intermediate scaffolding bodies 12 and 12 and located on the upper surface 52A or the ground G of the breakwater 52. Each of the tip side scaffold bodies 13 is made of a steel material, and a pair of tip connecting scaffolding materials 13A and 13A arranged in parallel and a plurality of elevating treads 13B erected between the tip connecting scaffolding members 13A and 13A and arranged in a row in the longitudinal direction. , 13B, ..., The side handrail 13C, and the moving wheel 13E provided on the tip side 13D of the tip connecting scaffolding material 13A.
The base end side 13F of the tip connecting scaffold material 13A is connected to the tip side 12D of the intermediate connecting scaffold material 12A by a connecting pin 10, and the tip side scaffold bodies 13 and 13 are on the upper surface 52A and the ground G of the breakwater 52. Can be moved. Further, a shock absorber 11 is provided at the tip of the moving wheel 13E.

Reference numeral 14 denotes a scaffold body elevating mechanism for raising and lowering the intermediate scaffold body 12 and the tip side scaffold body 13. The scaffold body elevating mechanism 14 is installed on the ground G and the elevating wire 14A having one end connected to the tip end side 12D of the intermediate scaffolding body 12, and the winch 14B that winds up and rewinds the other end side of the elevating wire 14A. (Not shown) and a scaffold 14C provided on the connecting members 8B and 8B of the mast 8 and supporting an intermediate portion of the wire 14A.
Then, by winding the elevating wire 14A with the winch 14B, as shown by the alternate long and short dash line in FIG. 1, the intermediate scaffolding bodies 12 and 12 and the tip side scaffolding bodies 13 and 13 are pulled up and separated from the breakwater 52 in a folded state. Then, by further pulling up, the scaffolding body 9 on the proximal end side is also pulled up on the distal end side 9D, so that the scaffolding bodies 9, 12, and 13 are in a movable state.

Reference numeral 15 denotes a work table, and the work table 15 is used by being detachably attached to each of the scaffold bodies 9, 12, and 13 according to the repair location of the breakwater 52. Reference numeral 16 denotes an expansion prevention rod provided between the intermediate scaffold bodies 12 and 12, and the expansion prevention rod 16 has a structure in which hooks are provided at both ends of the metal rod, and the hooks at both ends are attached to the intermediate connecting scaffold materials 12A and 12A. By engaging and erection, the intermediate scaffolding bodies 12 and 12 are ensured to work with peace of mind without inadvertently expanding.
Further, reference numeral 17 denotes a safety fence formed by assembling metal rods, and the safety fence 17 is detachably provided on the scaffolding bodies 9, 12 and 13 to ensure the safety of workers during work. A safety rope such as a rope may be used instead of the safety fence 17.

The present embodiment has the above-described configuration, and its operation will be described next.
First, guide rails 1 and 1 are laid along the longitudinal direction on the upper surface 52A of the breakwater 52 to be repaired, and fixed with anchors. Next, the support carriage 2 is lifted by a crane wheel and installed on the guide rails 1 and 1, and the holding wheels 4B and 4C are engaged with the rail 1. Next, the moving support 6, the base end side scaffolding body 9, the intermediate scaffolding body 12, and the tip side scaffolding body 13 are sequentially lifted on the breakwater 52 and connected by the connecting pin 10, so that the mobile work for repairing the structure is performed on the breakwater 52. Installation of the stand is completed.
In this case, the scaffolding can be installed in the entire vertical direction of the breakwater 52 by connecting another intermediate scaffolding body 12 between the intermediate scaffolding body 12 and the tip side scaffolding body 13 as needed.

The breakwater 52 is repaired using the mobile workbench for repairing the structure installed on the breakwater 52 in this way, and the scaffolding bodies 9, 12, and 13 are provided with elevating treads 9B, 12B, and 13B. Therefore, the worker can perform the repair work safely and efficiently, and the safety fences 5 and 17 are provided to ensure the safety of the worker against strong winds and rough waves.

When the repair work is completed, move the mobile workbench for repairing the structure to the next repair location. In this case, the scaffolding body elevating mechanism 14 operates the winch 14B on the ground to wind up the elevating wire 14A, and the intermediate scaffolding body 12 is lifted to integrally lift the tip side scaffolding body 13. At this time, since the moving wheel 13E is provided on the tip-side scaffolding body 13, the tip-side scaffolding body 13 smoothly moves and is lifted on both the ground G and the breakwater 52.
After that, the support carriage 2 is moved in the direction of arrow by a towing vehicle (not shown). Since the moving support 6 and the scaffolding bodies 9, 12, and 13 move integrally with the support cart 2, the scaffolding can be easily relocated in a short time, and when there is a risk of the sea or river becoming rough, the scaffolding can be easily relocated. By folding the scaffolding bodies 9, 12 and 13, it is possible to respond quickly.

When the repair work of the breakwater 52 is completed by repeating the above procedure, as shown in FIG. 7, the tip side scaffolding body 13, the intermediate scaffolding body 12, the base end side scaffolding body 9, the moving support body 6, and the support trolley 2 are in this order. The work of removing the mobile work table for repairing the structure is completed by removing the guide rail 1 from the breakwater 52 at the end with the crane car 53. Since all of this removal work can be performed from land, the number of work days can be significantly reduced as compared with the conventional scaffold dismantling.

In the present embodiment, the support carriage 2 is configured to be a tow type, but may be configured to be a self-propelled type or a push type.

Further, in the present embodiment, the configuration in which the intermediate scaffolding body 12 is connected between the proximal end side scaffolding body 9 and the distal end side scaffolding body 13 has been described, but another intermediate scaffolding body 12 is further described depending on the size of the structure. May be concatenated. Further, the tip side scaffold body 13 may be connected to the base end side scaffold body 9 without using the intermediate scaffold body 12. In this case, the elevating wire 14A is connected to the base end side 13F of the tip side scaffolding body 13 and lifted.

1 Guide rail 2 Support trolley 4B, 4C Wheel 6 Moving support 7 Support frame 8 Mast 8E Support wheel 9 Base end side scaffolding body 9A Base end side scaffolding material 9B, 12B, 13B Lifting tread 11 Buffer 12 Intermediate scaffolding Body 13 Tip side scaffolding body 13E Moving wheel 14 Scaffolding body elevating mechanism 14A Elevating wire 14B winch (drive source)
14C Pulley 15 Worktable 16 Expansion prevention rod 17 Safety fence 52 Breakwater (construction)

Claims (6)

From a support trolley that can move on the structure and a support frame portion having a mast that projects from the support trolley in a direction perpendicular to the moving direction of the support trolley and has wheels that roll on the structure on the tip side. a pair of right and left moving support comprising, positioned on the lower side of the respective mobile support, a base end side is rotatably connected to the support carriage, a pair with a cushion abutting the said construct distally a pair of left and right proximal end-side scaffold body composed of the base end side scaffold, base end is detachably and pivotally connected to the distal end side of the respective proximal side scaffold member, the wheel tip lower surface A pair of left and right tip-side scaffolding bodies made of a pair of tip-end connecting scaffolding materials, and a plurality of scaffolding materials detachably installed between each pair of scaffolding materials constituting the base-end-side scaffolding body and the tip-side scaffolding body . By expanding and contracting the elevating wire stretched between the tread plate and the scaffolding body on the tip side and the drive source arranged on the ground side via a pulley provided on the upper end side of the mast, the pair of left and right base ends. A mobile workbench for repairing a structure, which comprises a scaffolding body elevating mechanism for raising and lowering the side scaffolding body and the tip side scaffolding body with respect to the structure. The mobile workbench for repairing a structure according to claim 1, wherein the support carriage is configured such that a traveling wheel engages with a guide rail laid on the structure. Between the pair of left and right proximal end-side scaffold member and the distal end side scaffold member, the base end side connected to the respective proximal side scaffold member, connecting the distal end to the proximal end side of the respective distal side scaffold member The mobile workbench for repairing a structure according to claim 1 , wherein a pair of left and right intermediate scaffolding bodies configured by providing a shock absorber that abuts on the structure on the tip side are provided so as to be detachable. The mobile work for repairing a structure according to claim 1 or 3, wherein the base end side scaffolding body, the intermediate scaffolding body, and the tip end side scaffolding body are configured by arranging elevating treads in a row in the longitudinal direction. Stand. The mobile workbench for repairing a structure according to claim 3, wherein the pair of left and right intermediate scaffolding bodies are held at predetermined intervals by installing an expansion prevention rod. The mobile workbench for repairing a structure according to claim 1 or 3, wherein a safety fence or a safety rope is detachably provided on the base end side scaffold body, the intermediate scaffold body, and the tip side scaffold body.

Images