JP2023142991A - Mobile protective fence and method for removing pavement slab - Google Patents

Abstract

To provide a mobile protective fence capable of being installed while traveling on a road without arranging a worker for supporting the fence.SOLUTION: A mobile protective fence 1 is provided with a truck part 10 which can move in the front and rear direction, a body part 20 fixed to the truck part 10, an arm part 30 with its base end 31 fixed to the body part 20, and a planar fence part 50 fixed to the tip part 32 of the arm part 30 and extending in the front and rear direction and in the up and down direction. The fence part 50 is located on the side of the truck part 10 and at least one of the front and rear of the truck part 10.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a protective fence and a method for removing pavement slabs for suppressing the scattering of crushed materials generated during road construction and the like.

When removing asphalt pavement slabs and concrete pavement slabs, the pavement slabs are excavated using excavators such as backhoes, peeled off, and loaded onto dump trucks. In addition to the work with excavators, there are cases where the work involves scooping out the pavement slab using human power or heavy machinery. These operations are often carried out by restricting traffic in some lanes and creating lanes that can be used by general vehicles. For this reason, protective fences are installed to prevent debris from being scattered onto adjacent lanes during excavation. For example, Patent Document 1 describes a foldable fence that is lightweight and easy to move. Further, Patent Document 2 describes a fence that uses formwork installed during construction as a rail, and is provided with wheels at the lower end to be moved.

Japanese Patent Application Publication No. 2012-162915 Utility model registration No. 3183111

Work such as removal of pavement slabs and raking work will be carried out while the road is in progress. During construction work that restricts some lanes, workers are stationed to support protective fences and move the fences as the construction progresses. If a fence is installed near the boundary between a lane under construction and an adjacent lane, there are concerns that the workers supporting the fence will affect traffic in the adjacent lane. When moving a fence equipped with wheels along rails, a separate rail installation work is required, even if the number of workers supporting the fence can be reduced.
The present invention has been made to solve this problem, and provides a mobile protective fence that can be installed while moving along the road without the need for a worker to support the fence, and a method for removing pavement slabs. The purpose is to

In order to solve this problem, the movable protective fence according to the present invention includes a truck part that is movable in the front-back direction, a main body part fixed to the trolley part, and a base end part fixed to the main body part. an arm portion; and a planar fence portion fixed to the tip of the arm portion and extending in the front-rear direction and the up-down direction; It is arranged at least one of the front and rear of the.
Further, the pavement slab removal method according to the present invention is a pavement slab removal method that is carried out while moving along a lane, and includes a dump truck that transports the pavement shell of the pavement slab, and a dump truck that excavates the pavement slab and transports the dump truck. While moving an excavator to be loaded onto a truck and a mobile protective fence according to the present invention in tandem through the lane in this order, insert the fence section between the pavement slab being excavated and a lane adjacent to the lane. Deploy.

According to the present invention, a movable protective fence can be installed without arranging a worker to support the fence, and the removal work of the pavement slab can be performed while moving along the road.

FIG. 1 is a side view schematically illustrating a movable protective fence according to the present invention. 1 is a top view schematically illustrating a movable protective fence according to the present invention. FIG. 3 is a side view illustrating a state in which the movable protective fence is moving along a lane in the pavement slab removal method according to the present invention. FIG. 3 is a side view schematically illustrating a modification of the movable protective fence according to the present invention.

Embodiments of the present invention will be described with reference to the drawings. As illustrated in FIG. 1, the movable protective fence 1 according to the present invention includes a truck section 10, a main body section 20, an arm section 30, and a fence section 50.
In addition, the main body part 20 etc. are assembled using the pipe material 80P as an example. The pipe material 80P is, for example, a steel pipe called a single pipe. The tubes 80P can be connected to each other by a joint fitting 80J that connects the tubes 80P in an L-shape or T-shape, or a clamp fitting 80C that crosses and fixes the tubes 80P.

(Bolly part)
The trolley section 10 is a device that supports the entire movable protective fence 1 and is movable with wheels and the like. The trolley section 10 can move at least in the front-back direction. Here, the truck section 10 is a vehicle 100 having a loading platform 150. Vehicle 100 may be, for example, a light truck.

(Main body)
The main body part 20 serves as the base of the movable protective fence 1 and is a part fixed to the trolley part 10. Here, a rectangle is formed at the upper end using four pipes, and a pillar is erected at the apex of the rectangle to support it parallel to the floor 152 of the loading platform 150. As illustrated in FIG. 2, in plan view, the two tube members 22 in the left-right direction and the two tube members 21 in the front-rear direction form four sides of a rectangle. Four tubes 23 and 24 serve as pillars, and the two tubes 23 located at the front are longer than the two tubes 24 located at the rear. Between the pipe materials 23 and between the pipe materials 23 and 24, horizontal members 26 and 27 for reinforcement are installed at a position of about half the height from the floor 152 of the loading platform 150 to the upper end of the main body section 20. is provided.
The main body portion 20 is fixed to the vehicle 100 by a binding band 25. The binding band 25 is preferably secured on the opposite side of the fence section 50, that is, when the fence section 50 is disposed in the front, it is preferably provided on the rear side of the main body section 20. The tie strap 25 can be hooked to the hook 155 of the vehicle 100 using, for example, a load tightening belt.

(arm)
The arm portion 30 is a portion extending from the main body portion 20 and supporting the fence portion 50. The arm portion 30 has a proximal end portion 31 fixed to the main body portion 20 and a distal end portion 32 to which a fence portion 50 is fixed. The arm portion 30 includes an overhang portion 33 that overhangs to the right from the base end portion 31, an extension portion 34 that extends forward from the overhang portion 33, and an oblique cross section provided between the extension portion 34 and the main body portion 20. It has a section 35.
The overhanging portion 33 is two pipe members parallel to each other, each having one end fixed to the main body 20 and the other end extending rightward from the main body 20 . It is preferable that the length of the overhang is as short as possible, based on the position where the fence section 50 is placed, so as not to obstruct traffic of other vehicles. Moreover, it is preferable that the two projecting parts 33 are separated from each other so as to stabilize the extending part 34.

The extending portion 34 is a long tube, and is supported at two locations on one end side by the overhang portions 33 separated from each other, and the other end side extends to the front of the front end portion of the vehicle 100. The front end of the extension part 34 is located at the tip 32 of the arm part 30. The extending portion 34 may be a single tube, or may be formed by connecting two or more tubes.
The diagonal portion 35 is a tube provided diagonally between the main body portion 20 and the arm portion 30. Here, the diagonal portion 35 is provided between the vertical tube member 23 on the left side of the main body portion 20 and the distal end portion 32 side of the extension portion 34 .

(pillar part)
The arm portion 30 has a support portion 40 at the tip portion 32. The support column 40 is a pipe provided in the vertical direction, and has wheels 43 at a lower end 42 that can run on the ground. A diagonal tube member 37 is provided between the lower end portion 42 of the support column 40 and the vicinity of the center of the oblique portion 35 . Further, a diagonal tube member 36 is provided between the support portion 40 and the extension portion 34.
A fence section 50 can be fixed to the support section 40. Here, the fence section 50 is fixed to the support section 40 via the attachment section 55. The upper end portion 41 of the column portion 40 is located at a higher position than the fence portion 50. The upper end portion 41 pulls the fence portion 50 upward by a tension portion 44 provided between the upper end portion 41 and the attachment portion 55 . The tension portion 44 can be, for example, a wire rope made of metal or the like. Further, a diagonal tube member 45 is provided between the upper end portion 41 of the support portion 40 and the attachment portion 55.

(Fence part)
The fence portion 50 is a planar member that prevents crushed materials and the like generated by construction work from scattering around. The fence portion 50 is spaced apart from the vehicle 100 on the right side and in the front direction. The fence portion 50 is fixed so as to form a surface extending in the front-rear direction and the up-down direction. As illustrated in FIG. 2, for example, when construction is to be carried out in a lane 500, the vehicle 100 can run in the lane 500, and the fence section 50 can be installed along the boundary with the adjacent lane 550.
The fence portion 50 is preferably lightweight so as to suppress the load applied to the main body portion 20 and the arm portions 30 and to be easily moved. In addition, it is preferable that it is reticulated so that the force exerted when exposed to the wind is small. Here, a rectangular frame with a mesh is used. For the fence portion 50, a commercially available net for scattering prevention or the like can be used. Note that the fence portion 50 may be a plate-shaped member, or may be a frame covered with cloth or the like.
The fence section 50 is fixed to a mounting section 55. The attachment portion 55 is a U-shaped tube member, and is fixed to the support portion 40 at two different heights. It is preferable that the shape of the attachment part 55 changes depending on the size of the fence part 50 and the shape of the frame. The fence portion 50 may be directly fixed to the support portion 40 or the like without providing the attachment portion 55.

Next, the effects of the movable protective fence 1 will be explained. The movable protective fence 1 includes a cart portion 10 that is movable in the front-rear direction, a main body portion 20 fixed to the cart portion 10, an arm portion 30 having a base end 31 fixed to the main body portion 20, and an arm portion 30. A planar fence portion 50 is fixed to the tip portion 32 of the truck and extends in the front-rear direction and the up-down direction. located on at least one side.
With this configuration, the movable protective fence 1 can be moved by the truck section 10 with the fence section 50 disposed on the side of the truck section 10 and at least one of the front and rear sides of the truck section 10. Moreover, the planar fence portion 50 extending in the front-rear direction and the up-down direction can effectively suppress the scattering of crushed objects and the like to the sides.

In the movable protective fence 1, it is preferable that the fence section 50 is spaced laterally from the trolley section 10 and spaced apart from at least one of the front and rear sides of the trolley section 10.
With this configuration, the movable protective fence 1 can maintain a distance between the bogie section 10 and the adjacent lane while arranging the fence section 50 near the boundary with the adjacent lane. In addition, the fence section 50 can be placed on the side of the work area while keeping the distance of the trolley section 10 from the work being done in front or behind, which is effective in scattering crushed materials etc. to the side. can be suppressed.

In the movable protective fence 1, the arm portion 30 has a support portion 40 provided vertically at the tip portion 32, and the upper end portion 41 of the support portion 40 is located at a higher position than the fence portion 50. 50, and the lower end 42 of the support column 40 preferably has wheels 43 capable of running on the ground.
With this configuration, the movable protective fence 1 can support the load between the pillars 40 and the ground while traveling together with the trolley section 10, and the fence section 50 can be arranged at a position further away from the trolley section 10. be able to.

The movable protective fence 1 includes an arm portion 30 that includes an overhang portion 33 that overhangs laterally from a base end portion 31, an extension portion 34 that extends in the front-rear direction from the overhang portion 33, and an extension portion 34 and a main body portion 20. It is preferable to have a diagonal portion 35 provided between.
With this configuration, the movable protective fence 1 can improve the strength of the arm portion 30, and the fence portion 50 can be placed further away from the cart portion 10.

In the movable protective fence 1, it is preferable that the fence part 50 is disposed at a distance from the cart part 10 on the right side and in the front direction.
With this configuration, the movable protective fence 1 can position the fence section 50 on the right side of the work area while moving in accordance with the work being performed in front of the trolley section 10, and the fence section 50 can be placed on the right side of the work area, and the It is possible to effectively suppress the scattering of crushed materials, etc. onto the lanes.

In the movable protective fence 1, it is preferable that the truck portion 10 is a vehicle 100, and the main body portion 20 is fixed to a loading platform 150 of the vehicle 100.
With this configuration, the movable protective fence 1 can be moved by driving the vehicle 100, and the construction work can proceed smoothly by arranging the fence section 50 without a worker on the road.

Note that the fence portion 50 may be arranged on the left side of the cart portion 10 or may be provided on both left and right sides of the cart portion 10. When disposed apart from the trolley portion 10, the projecting portion 33 may project to the left side or both left and right sides. Moreover, the fence part 50 may be arranged at the rear of the truck part 10, or may be provided at both the front and the rear. The extending portion 34 can also extend rearward.

Next, a method for removing pavement slabs according to the present invention will be explained. The pavement slab removal method is carried out while moving along one lane of the road. As illustrated in FIG. 3, the excavator 200 is performing excavation work to peel off the pavement slab 400 while moving in the traveling direction D1. The excavator 200 is, for example, a backhoe, and also performs the work of collecting pavement shells 450, which are the peeled pavement slabs 400, and loading them onto the dump truck 300. The dump truck 300 moves along with the excavator 200, and when the pavement shells 450 accumulate, they are transported to a collection site. Then, a dump truck 300 that can be loaded is placed at a position that matches the excavator 200.
A fence portion 50 of the movable protective fence 1 is placed at a location where excavation work is being performed to prevent debris from scattering onto adjacent lanes. The fence section 50 is placed between the location being excavated and the adjacent lane, and is moved as the excavation work progresses.
A dump truck 300, an excavator 200, and a movable protective fence 1 are traveling in this order from the front to the rear in the traveling direction D1.

The pavement slab removal method according to the present invention is a method for removing a pavement slab 400 while moving along a lane, and includes a dump truck 300 that transports a pavement shell 450 of a pavement slab 400, and a dump truck 300 that excavates and dumps the pavement slab 400. An excavator 200 to be loaded onto a truck 300 and a movable protective fence 1 are moved in tandem through a lane in this order, and a fence part 50 is arranged between a pavement slab 400 being excavated and a lane adjacent to the lane.
With this configuration, in the pavement slab removal method, the fence portion 50 can be placed in accordance with the position of the excavation work without arranging a worker to support the fence. In other words, the construction work can be carried out with the protective fence erected without any workers on the road. Further, the fence section 50 can be placed near the boundary between adjacent lanes, and the work area in the lane where the construction work is to be performed can be ensured, so that the construction work can be carried out efficiently.

(Modified example)
Next, a modification 1A of the movable protective fence 1 will be explained. As illustrated in FIG. 4, in modification 1A, the fence portion 50 is arranged so as to be in contact with the right side surface of the rear end portion of the vehicle 100. Further, a sheet 51 is provided to cover the right side surface of the loading platform 150 so as to be continuous with the fence portion 50.
The main body of the modification 1A has a simple configuration in which vertical tube members 23A, 24A and front and rear tube members 21A are assembled in a U-shape. The pipe materials 23A and 24A are erected on the floor 152 of the loading platform 150 and are fixed to the side wall 151 by the fixing member 28. The tube 21A in the longitudinal direction is supported by the tubes 23A and 24A at a position approximately at the height of the vehicle 100. A tube 34A extending in the front and rear direction and serving as an arm portion is fixed to the tube 21A. The tube 34A extends rearward beyond the rear end of the vehicle 100.

The fence portion 50 is directly fixed to the pipe material 34A without providing a mounting portion 55. Further, a portion of the front side of the fence portion 50 is in contact with a side wall 151 of the loading platform 150. A sheet 51 is provided between the fence portion 50 and the driver's cab of the vehicle 100 in the front-rear direction so as to cover the pipe members 21A, 23A, 24A, and 34A. The sheet 51 may be, for example, a curing sheet or the like, and may be plate-shaped or net-shaped.
In modification 1A, a movable protective fence can be installed with a simple configuration. Further, by providing the seat 51 using the loading platform 150 of the vehicle 100, the range of the protective fence can be expanded.

In addition, the trolley part 10 may be a handcart, for example. Even in the case of a handcart, the fence part 50 can be separated from the cart part 10. The worker pushing the wheelbarrow can move the mobile protective fence away from the adjacent lane.
The main body portion 20 and the arm portions 30 may be a combination of a tube material and a face material. It may be made entirely or partially by woodworking or the like. The tubes and panels can also be interconnected, for example by bolts and nuts. Further, the main body portion 20 may be fixed to the truck portion 10 with bolts or the like.
The fence section 50 is not limited to just one fence section, but two or more fence sections may be connected together to protect a wide area. In that case, the plurality of fence sections 50 can be supported by adding additional support sections 40 and tension sections 44.

1 Mobile protective fence 1A Modified example 10 Cart part 20 Main body part 25 Binding band 28 Fixing member 30 Arm part 31 Base end part 32 Tip part 33 Projection part 34 Extension part 35 Diagonal part 40 Support part 43 Wheel 44 Tension part 50 Fence part 51 Sheet 55 Mounting part 100 Vehicle 150 Loading platform 151 Side wall 152 Floor 155 Hook 200 Excavator 300 Dump truck

Claims (7)

A truck part that is movable in the front and rear direction,
a main body portion fixed to the truck portion;
an arm portion whose base end portion is fixed to the main body portion;
a planar fence fixed to the tip of the arm and extending in the front-rear direction and the up-down direction;
The fence portion is disposed on a side of the truck portion and at least one of the front and rear sides of the truck portion.
Mobile protective fence. The fence portion is spaced laterally from the truck portion and spaced apart from at least one of the front and rear sides of the truck portion.
The mobile protective fence according to claim 1. The arm portion has a support portion provided in the vertical direction at the tip portion,
The upper end of the support column has a tensioning part located at a higher position than the fence part and pulling the fence part,
The lower end of the support column has wheels that can run on the ground.
The mobile protective fence according to claim 1. The arm portion is
a projecting portion that projects from the base end portion to the side;
an extending portion extending in the front-rear direction from the overhanging portion;
an oblique part provided between the extending part and the main body part,
The mobile protective fence according to claim 1. The fence portion is spaced apart from the truck portion on the right side and in the front.
The mobile protective fence according to claim 1. The truck part is a vehicle,
The main body portion is fixed to a loading platform of the vehicle.
The mobile protective fence according to claim 1. This is a method of removing pavement slabs while moving along the lane,
a dump truck for transporting the pavement shell of the pavement version;
an excavator that excavates the pavement slab and loads it onto the dump truck;
The movable protective fence according to any one of claims 1 to 6, while traveling in tandem on the lane in this order,
arranging the fence section between the pavement slab being excavated and a lane adjacent to the lane;
Paving slab removal method.

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