JP7357837B2 - How to stack slope blocks - Google Patents

Description

The present invention relates to a method for stacking slope blocks.

Precast concrete blocks (slope blocks) are sometimes piled up to protect slopes such as cuts and embankments. At this time, the slope blocks were moved one by one to the installation location either manually by workers or using mobile cranes such as tow trucks. Such moving work is hard work, complicated, and takes a long time (see, for example, Patent Document 1).

Therefore, Patent Document 2 discloses a device for moving a concrete block (slope block) to an installation position. This equipment is equipped with an upper rail and a lower rail that extend material horizontally at intervals above and below the slope, and the material is extended horizontally along the upper and lower rails using a motor. A movable elevating rail is provided, and a cart movable by a motor is provided along the elevating rail.

A plurality of concrete blocks are placed on the cart, the cart is moved to each installation position, and the concrete blocks are lifted down one by one by a lifting machine provided on the cart. This process is continued horizontally, stacking the concrete blocks one row at a time from the bottom.

Japanese Patent Application Publication No. 2004-218348 Japanese Patent Application Publication No. 2001-248161

However, in the apparatus described in Patent Document 2, the cart must be moved every time one concrete block is lifted down. Therefore, there was a problem that the work efficiency of transporting concrete blocks was poor.

In view of the above points, an object of the present invention is to provide a method for stacking slope blocks that can improve the efficiency of transporting a plurality of slope blocks to an installation position.

The method of stacking slope blocks according to the present invention includes the steps of installing two guide rails on the slope so that they extend vertically parallel to each other with an interval between them, and placing a plurality of slope blocks side by side in the horizontal direction. a step of providing a mounting section connected to the inside of two sliding sections each having a mounting surface capable of moving up and down and guided by the two guide rails in a vertically movable manner; a step of placing a plurality of slope blocks on a surface; a step of raising the mounting section along the two guide rails by simultaneously raising the two sliding sections; and a step of raising the mounting section along the two guide rails. The method includes the steps of lowering the plurality of slope blocks placed on a surface onto the slope, and stacking the lowered slope blocks on the slope across the distance between the guide rails. Features.

According to the slope block stacking method of the present invention, it is possible to place a plurality of slope blocks in a row in the horizontal direction on the loading surface of the loading section that moves up and down along the two guide rails. be. Thereby, a plurality of slope blocks stacked horizontally on the slope can be conveyed all at once to the vicinity of the installation position and lowered all at once by raising and lowering the placing section. Therefore, compared to the case where the slope blocks are lowered one by one as described in Patent Document 2, it is possible to improve the efficiency of the conveyance work.

In the slope block stacking method of the present invention, before carrying out the step of placing a plurality of slope blocks on the above-mentioned placement surface, a plurality of the slope blocks are placed horizontally in at least one row on the slope. It is preferable to carry out a step of placing them side by side.

In this case, there is no need to transport at least one row of slope blocks by placing them on the mounting surface of the mounting unit that moves up and down along the guide rail, so this transport work is omitted and work efficiency is improved. becomes possible.

1 is a schematic front view showing a state in which a slope block conveying device used in a slope block stacking method according to an embodiment of the present invention is installed on a slope. FIG. 3 is a schematic side view showing a state in which the slope block conveying device is installed on a slope. A schematic enlarged view of the slope block conveying device installed on the slope, viewed from below. 1 is a flowchart showing a method of piling up slope blocks according to an embodiment of the present invention.

A slope block conveying device 100 (hereinafter also simply referred to as the conveying device 100) used in a slope block stacking method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. In addition, in FIG. 2, only the sliding part 40 of the mounting part 20 is shown and the rest are omitted.

The conveyance device 100 is a device that conveys a block (slope block) B made of precast concrete to an installation position or its vicinity in order to protect a slope A of cutting or embankment. The transport device 100 includes two guide rails 10, a placing section 20, and a lifting means 30.

The two guide rails 10 are installed on the slope A so as to extend vertically parallel to each other with an interval L between them. The two guide rails 10 are installed at an interval L, for example, 5 m to 10 m, which is larger than the interval between a plurality of consecutive slope blocks B stacked side by side in the horizontal direction. The guide rail 10 is fixed on an abutment 11 fixed to the ground with an anchor or the like.

The guide rail 10 has a strength that allows the mounting section 20 to move up and down stably without sideways movement even when a plurality of slope blocks B are placed on the mounting section 20. It is reinforced and constructed in a shape. From the viewpoint of simplifying transportation of the conveyance device 100, it is preferable that the guide rail 10 is made of, for example, aluminum material to reduce its weight.

The mounting section 20 is provided so as to span the two guide rails 10 in the horizontal direction. The mounting section 20 has a mounting surface 21 on which a plurality of slope blocks B can be placed side by side in the horizontal direction, and both ends thereof are guided by two guide rails 10 so as to be vertically movable. be done. The mounting section 20 here includes two sliding sections 40, a mounting section main body 50, and load receiving sections 60 and 70. Note that the sliding portions 40 correspond to both ends of the mounting portion 20.

Each sliding portion 40 is provided to be slidable along the longitudinal direction of each guide rail 10 . Here, each sliding portion 40 is configured as a truck 42 having two rows of four wheels 41 in total. The wheels 41 in one row roll on the U-shaped rails on the outside of the guide rail 10, and the wheels in the other row roll on the U-shaped rails on the inside of the guide rail 10, so that the wheels 41 slide. The portion 40 is slidable along the guide rail 10.

Further, each sliding portion 40 is provided with a guide roller 43 located below each wheel 41, and this guide roller 43 is connected to the U-shaped inner part of the U-shaped rail of the guide rail 10. It is located in the direction of the guide. Thereby, each sliding portion 40 can slide along the guide rail 10 without being displaced.

Here, the mounting part 20 is connected to the two sliding parts 40, the first load receiving part 60 connected to the inside of each sliding part 40, and the inside of the first load receiving part 60, respectively. A receiver main body 50, a second load receiver 70 connected to the inside of each receiver main body 50, and a receiver main body connected between these second load receivers 70 and located in the center. It is equipped with 50.

Note that the configuration of the mounting section 20 is not limited to this, and for example, the number of the mounting section main body 50 and the load receiving sections consisting of the first and second load receiving sections 60 and 70 here are not limited to this. . Moreover, these may be integrated and configured.

Each device main body 50 has a frame 51 whose longitudinal direction is in the horizontal direction and is constructed using a bar material such as an H-shaped material made of a material such as aluminum or steel. A mounting plate 52 made of a metal plate, etc., is fixed. The upper surface of this mounting plate 52 serves as the mounting surface 21 on which the slope block B is mounted.

The mounting surface 21 is wide enough to be able to place at least one slope block B, and preferably to be able to place a plurality of blocks B. The mounting surface 21 has a width of several meters and a depth of about 1 meter, for example. Then, all the slope blocks B stacked in a line horizontally on the slope A within the interval L between the two guide rails 10 are placed on the placement surface 21 of any of the placement section main bodies 50. It is preferable that the mounting surface 21 has a width corresponding to

The weight of one slope block B is, for example, 10 to 30 kg, and the mounting unit main body 50 has a strength that allows several to 20 such slope blocks B to be placed on the mounting surface 21. have. Note that the widths of the mounting surfaces 21 provided in each of the mounting section main bodies 50 may be the same or may be different.

Each first load receiving part 60 has a frame 61 made of a bar made of a material such as aluminum or steel, and this frame 61 is fixed to the sliding part 40, respectively. Here, the carriage 42 of the sliding part 40 and the frame 61 of the sliding part 40 are fixed with a fixing plate 62 interposed therebetween using bolts or the like. The frame 61 of the first load receiving section 60 and the frame 51 of the mounting section main body 50 are directly fixed using bolts or the like.

Each first load receiving section 60 includes two first rollers 63 rotatably provided on a frame 61. The first rollers 63 have their respective rotation axes extending in the horizontal direction, and are arranged in parallel in the vertical direction at intervals.

Each second load receiving section 70 has a frame 71 made of a bar made of a material such as aluminum or steel, and this frame 71 is fixed to the load main body section 50, respectively. The frame 71 of the second load receiving section 70 and the frame 51 of the mounting section main body 50 are directly fixed using bolts or the like.

Each second load receiving section 70 includes four second rollers 72 rotatably provided on a frame 71. The second rollers 72 have their respective rotation axes extending in the horizontal direction, and are arranged in parallel in pairs adjacent to each other with an interval in the vertical direction.

The first and second rollers 63 and 72 are support members for supporting the load caused by the plurality of slope blocks B placed on the placement surface 21, and preferably have large load-bearing performance. Therefore, it is particularly preferable to use a high-load roller for the second roller 72, which uses a roller bearing and has a high-strength resin such as urethane directly baked on the outer periphery. Moreover, by using such a roller, it becomes possible to suppress damage to the slope block B.

Furthermore, in the second load receiving section 70, there are four second rollers 72, and these four second rollers 72 are wider than the first rollers 63. . As a result, even if one second roller 72 falls into the concave portion of the slope block B, the other three second rollers 72 are maintained in contact with the convex portion of the slope block B. Deformation such as bending of the placing part 20 is suppressed, and smooth raising and lowering of the placing part 20 is achieved. Note that a mounting plate may be provided on the upper surface of the frames 61 and 62 of the first or second load receiving portions 60 and 70 so that the slope block B can be mounted thereon.

The elevating means 30 raises and lowers the mounting section 20 along the two guide rails 10. Here, two hoisting machines (winches) 31 are used as the elevating means 30, but the present invention is not limited to this.

Each hoist 31 is installed on the upper part of the guide rail 31, respectively. It is preferable that the hoist 31 is fixed to the ground separately from the guide rail 10 using an anchor or the like. Thereby, the stress acting on the guide rail 10 can be reduced, and the weight of the guide rail 10 can be reduced. However, the hoist 31 may be fixed to the guide rail 10. As the winding machine 31, an existing product may be used.

An end of a wire 32 is connected to each hoist 31, and the other end of the wire 32 is connected to the hoist 31 or the guide rail 10 via a pulley 44 installed on the frame 41 of the sliding section 40. Fixed at the top end. As a result, when the winding machine 31 winds up the wire 32, the sliding part 40 moves up along the guide rail 10, and when the winding machine 31 winds up the wire 32, the sliding part 40 moves down along the guide rail 10. Note that the connection between the hoist 31 and the sliding section 40 is not limited to this, and for example, the other end of the wire 32 may be fixed to the frame 41 of the sliding section 40.

Then, when the two hoisting machines 31 start hoisting operations at the same time, the mounting section 20 rises along the guide rail 10 without positional deviation. When the unwinding operations of the two winding machines 31 are started simultaneously, the mounting section 20 descends along the guide rail 10 without positional deviation. The lifting speed of the mounting section 20 is, for example, 1 m/sec to 10 m/sec.

The operation of the two hoisting machines 31 can be started or stopped by two operators simultaneously operating the operation buttons installed on each hoisting machine 31, or by using two remote controllers for each hoisting machine 31. etc., may be operated by one person at the same time. Further, a control device or the like that operates the two hoists 31 at the same time may be provided.

Hereinafter, a method of piling up the slope blocks B according to the embodiment of the present invention using the above-mentioned transport device 100 will be described with reference to FIG. 4 as well.

First, a guide rail installation step (S1) is performed in which two guide rails 10 are installed on a slope A so as to extend parallel to each other in the vertical direction with an interval L between them. At this time, it is preferable that the lowest row of slope blocks B to be stacked on the slope A are stacked in advance. Further, if the conveyance work is not as difficult as shown in the picture above, slope blocks B such as the two rows from the bottom to be piled up on slope A may also be piled up in advance.

Next, a platform installation step (S2) is performed in which the platform 20 and the elevating means 30 are installed to complete the transport device 100. After this placing part installation step (S2), the lowest row of slope blocks B and the like to be piled up on the slope A may be piled up.

Next, a slope block mounting step (S3) is performed in which a plurality of slope blocks B are placed on the mounting surface 21 of the mounting main body section 50. The work of placing the slope block B may be performed manually by a worker, or may be performed using a mobile crane such as a tow truck.

Here, it is preferable to place all the slope blocks B to be stacked in a line on the slope over the distance L between the two guide rails 10 on the mounting surface 21. However, only a portion of the slope blocks B to be stacked in two or more rows over the interval L, or a part of the slope blocks B to be stacked in one row over the interval L, may be placed on the mounting surface 21.

Next, a placing part raising step (S4) is performed in which the placing part 20 is raised along the two guide rails 10. By operating the two hoists 31 simultaneously, the mounting section 20 is raised so that the mounting surface 21 is located near the installation position of the slope block B placed on the mounting surface 21. to stop it.

Next, a slope block lowering step (S5) is performed in which the slope block B placed on the mounting surface 21 of the mounting section main body 50 is lowered onto the slope A. The work of placing the slope block B may be performed manually by a worker.

Next, a slope block stacking step (S6) is performed in which the dropped slope blocks B are stacked on the slope A. The work of stacking the slope blocks B may be performed manually by a worker. Since the slope block B can be lowered near the installation position, it is possible to reduce the effort required to move the slope block B.

Next, a placing part lowering step (S7) is performed in which the placing part 20 is lowered along the two guide rails 10. By operating the two hoists 31 at the same time, the placing section 20 is lowered to its original lower position and stopped.

Thereafter, the steps from the slope block mounting step (S3) to the placing part lowering step (S7) are repeated until the slope blocks B are stacked up to a predetermined height on the slope A (S8: YES).

When the stacking of the slope blocks B is completed, a dismantling step (S9) is finally performed to dismantle the transport device 100, and the work is completed.

As explained above, according to the method of piling up slope blocks B according to the embodiment of the present invention, a plurality of slope blocks B can be horizontally lined up and placed on the mounting surface 21. Thereby, the plurality of slope blocks B stacked horizontally on the slope A can be conveyed all at once to the vicinity of the installation position and lowered all at once by raising the mounting section 20 once. Therefore, compared to the case where the slope blocks are lowered one by one as described in Patent Document 2, it is possible to improve the efficiency of the conveyance work.

Note that the present invention is not limited to the method using the transport device 100 described above, and other appropriate transport devices may be used.

DESCRIPTION OF SYMBOLS 10... Guide rail, 11... Abutment, 20... Placing part, 21... Placing surface, 30... Lifting means, 31... Winding machine, 32... Wire, 40... Sliding part (both ends of the mounting part), 41...Wheel, 42...Dolly, 43...Guide roller, 44...Pulley, 50...Placement section main body, 51...Frame body, 52...Placement plate, 60...First load receiver, 61...Frame body, 62 ... Fixed plate, 63... First roller, 70... Second load receiver, 71... Frame, 72... Second roller, 100... Slope block conveying device, A... Slope surface, B... Slope surface block.

Claims (2)

a step of installing two guide rails on a slope so that they extend vertically parallel to each other with an interval between them;
It has a mounting surface on which a plurality of slope blocks can be placed side by side in the horizontal direction, and is connected to the inside of two sliding parts that are guided by the two guide rails so as to be able to move up and down, respectively. a step of providing a placing section;
a step of placing a plurality of slope blocks on the placement surface;
raising the mounting part along the two guide rails by simultaneously raising the two sliding parts;
lowering the plurality of slope blocks placed on the placement surface onto the slope;
A method for stacking slope blocks, comprising the step of stacking the dropped slope blocks on the slope across the distance between the guide rails . Before carrying out the step of placing multiple slope blocks on the above-mentioned placement surface,
2. The method of stacking slope blocks according to claim 1, further comprising the step of placing a plurality of said slope blocks horizontally side by side in at least one row on said slope.

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