JP2023136233A - Transport device for slope block - Google Patents

Abstract

To provide a transport device for a slope block capable of materializing simplification of constitution and reduction of slope angle of a loading surface.SOLUTION: A transport device 100 for a slope block is a device to transport a slope block B piled on a slope surface A, and comprises: two guide rails 10 which is installed on the slope surface A in such a manner that the rails 10 vertically extend apart from and parallel to each other; sliding portions 20 guided by each of two guide rails 10 in a freely vertically movable manner; lifting means 30 lifting the sliding portions along each of the guide rails 10; first load receiving portions 50 which have a plurality of first rollers 52 freely rotatable centered on horizontally extending rotation shafts, and which are each jointed to the sliding portions 20; mounting portion 40 which has a mounting surface S on which the slope block B can be mounted, and is supported at the front portion thereof, on the front portion of the first load receiving portions 50; and a support portion 80 connecting a rear portion of the mounting portion 40 and a rear portion of the load receiving portion 50 in a vertical direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to an apparatus for transporting 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 conveyance device that conveys a slope block to an installation position. This conveyance device consists of two guide rails installed on a slope, an elevating means that can raise and lower the guide rails using a hoist, a load receiver having rollers, and a space between the elevating means and the load receiver and a load receiver. The frame body is provided so as to horizontally connect the parts and on which the mounting plate is placed. Using this transport device, the slope block placed on the mounting plate can be transported to the vicinity of the installation position.

Japanese Patent Application Publication No. 2004-218348 JP 2021-156138 Publication

However, in the conveyance device described in Patent Document 2, the frame body that receives the load of the slope block is provided so as to horizontally connect between the lifting means and the load receiving portions and between the load receiving portions. However, it is necessary to make the connection structure between the frame and these members strong, which results in a problem that the structure becomes complicated and heavy.

Further, the mounting surface is approximately parallel to the slope of the slope. Therefore, there was a problem in that it was necessary to provide a configuration for preventing the slope block from slipping off the mounting plate. Further, there was also a problem in that it was difficult to lift the slope block placed diagonally from the mounting plate from the viewpoint of the worker's posture.

In view of the above points, it is an object of the present invention to provide a slope block conveying device that can simplify the configuration and reduce the inclination angle of the mounting surface.

The slope block conveying device of the present invention is a device for conveying slope blocks to be piled up on a slope, and includes two guides installed on the slope so as to extend vertically in parallel with each other with an interval between them. a rail, a sliding part guided by the two guide rails so as to be movable up and down, an elevating means for raising and lowering the sliding part along each of the guide rails, and a rotating shaft extending in the horizontal direction. It has a plurality of rotatable rollers, a load receiving part each connected to the sliding part, and a placing surface on which the slope block can be placed, and the front part is connected to the load receiving part. and a support section that vertically connects the rear part of the loading part and the rear part of the load receiving part.

According to the slope block conveying device of the present invention, the front portion of the loading portion having the loading surface on which the slope block is placed is supported by the front portion of the load receiving portion, and the rear portion thereof is supported by the supporting portion. It is supported at the rear of the load receiving part via. Therefore, the load of the slope block acts downward on the load receiving part, so compared to the case where the slope block is supported horizontally between the parts as in the technique of Patent Document 2, the load receiving part is It becomes possible to simplify the structure of the section itself and the connection structure between the load receiving section and the mounting section, and thereby to reduce the weight.

In addition, in the load receiving part that moves while the roller is in contact with the slope that slopes upward, the rear part supports the placing part via the support part, so the load receiving part is compared with the slope angle of the slope. It becomes possible to make the slope of the mounting surface close to horizontal.

In the slope block conveying device of the present invention, it is preferable that a connection position between the placing section or the load receiving section and the supporting section is changeable.

In this case, the connection position between the placing part or the load receiving part and the supporting part can be changed according to the inclination angle of the slope, so it is possible to make the inclination angle of the placing surface even closer to horizontal. .

Further, in the slope block conveying device of the present invention, it is preferable to include drop-off prevention means around the placement surface to prevent the slope block placed on the placement surface from falling off.

In this case, it becomes possible to prevent the slope block placed on the mounting surface from falling off by the fall prevention means.

FIG. 1 is a schematic front view showing a state in which a slope block conveying device according to an embodiment of the present invention is installed on a slope. FIG. 3 is a schematic partial front view showing an enlarged first load receiving portion, a connecting portion, and the like in a state where the slope block conveying device is installed on a slope. A schematic view taken along the line III-III in FIG. 1. A schematic view along the line IV-IV in FIG. 1. Flowchart showing how to stack slope blocks.

A slope block conveying device 100 (hereinafter also simply referred to as the conveying device 100) according to an embodiment of the present invention will be described with reference to the drawings. Note that each figure is deformed and detailed structures are omitted.

As shown in FIGS. 1 and 2, 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. It is. The transport device 100 includes two guide rails 10, two sliding parts 20, two elevating means 30, three mounting parts 40, two first load receiving parts 50, and two second load receiving parts. 60, two connecting parts 70 and six supporting parts 80. Note that the first load receiving section 50 corresponds to the load receiving section of the present invention.

The two guide rails 10 are installed on the slope A so as to extend vertically parallel to each other with an interval between them. The two guide rails 10 are installed at an interval greater than the interval between a plurality of consecutive slope blocks B stacked side by side in the horizontal direction, for example, an interval of 5 m to 10 m. 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 40 to move up and down stably without sideways movement even when a plurality of slope blocks B are placed on the mounting section 40. 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.

Each sliding portion 20 is provided to be slidable along the longitudinal direction of each guide rail 10 . Here, although details are not shown, each sliding portion 20 is configured as a truck 21 having two rows of eight wheels in total. The wheels 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. 20 is slidable along the guide rail 10.

Furthermore, although not shown, each sliding portion 20 is provided with a guide roller located below each wheel, and this guide roller is connected to the U-shaped rail of the U-shaped rail of the guide rail 10. It is located inside and on the upper surface for guidance. Thereby, each sliding portion 20 can slide along the guide rail 10 without being displaced.

Each lifting means 30 raises and lowers the sliding part 20 along the guide rail 10, respectively. Here, a winch 31 is 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 10, 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.

One end of a wire 32 is connected to each hoist 31 , and the wire 32 is connected to the upper end of the hoist 31 or the guide rail 10 via a pulley 22 installed on the carriage 21 of the sliding section 20 . is fixed. As a result, when the winding machine 31 winds up the wire 32, the sliding part 20 moves up along the guide rail 10, and when the winding machine 31 winds up the wire 32, the sliding part 20 moves down along the guide rail 10. Note that the connection between the hoist 31 and the sliding section 20 is not limited to this, and the other end of the wire 32 may be fixed to the cart 21 of the sliding section 20, for example.

Then, when the two hoisting machines 31 start hoisting operations at the same time, the two sliding parts 20 move up along the guide rail 10 without being displaced. When the unwinding operations of the two hoisting machines 31 are started simultaneously, the two sliding parts 20 descend along the guide rail 10 without positional deviation. The vertical movement speed of the sliding part 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.

Each of the mounting sections 40 has a mounting surface S on which the slope block B can be mounted. The mounting unit 40 here has an elongated rectangular frame 41 whose longitudinal direction is the horizontal direction when viewed from above, and the lower part of the frame 41 is reinforced by a truss structure or the like. A mounting plate 42 having a mounting surface S on the upper surface is mounted on this reinforcing structure. The frame body 41 and the reinforcing structure of the mounting section 40 are constructed using a bar material such as an H-shaped material made of a material such as aluminum or steel.

The mounting plate 42 is made of, for example, a metal plate such as expanded metal, a wooden plate, or the like. The upper part 41a of the frame body 41 is located above the mounting surface S, thereby preventing the slope block B placed on the mounting surface S from falling. Note that the upper part 41a of the frame 41 corresponds to the falling-off prevention means of the present invention.

The mounting surface S 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 side by side in the horizontal direction. The mounting surface S has a width of several meters and a depth of about 1 meter, for example.

The weight of one slope block B is, for example, 10 to 30 kg, and the mounting portion 40 has the strength to be able to place several to 20 such slope blocks B on the mounting surface S. are doing.

The first load receiving parts 50 are connected to the inside of the sliding part 20, and the second load receiving part 60 is located between the two first load receiving parts 50, and here, There are two.

The connecting portion 70 connects the sliding portion 20 and the first load receiving portion 50. The mounting portion 40 connects the front portion of the first load receiving portion 50 and the front portion of the second load receiving portion 60, and also connects the front portions of the second load receiving portions 60 to each other. The support portion 80 connects the rear portions of the first load receiving portion 50 and the second load receiving portion 60 and the rear portion of the mounting portion 40 .

Note that here, the transport device 100 includes two second load receiving sections 60. However, the present invention is not limited to this, and for example, even if there are three or more second load receiving parts 60, there is no second load receiving part 60 and the first load receiving parts 50 are It may be directly connected to the mounting section 40.

As shown in FIG. 3, the first load receiving section 50 includes a frame body 51 each made of a bar made of a material such as aluminum or steel, and two rotatably provided on the frame body 51. A first roller 52 is provided. The first rollers 52 have their respective rotational axes extending in the horizontal direction, and are arranged in parallel in the vertical direction at intervals.

The frame body 51 is connected to the sliding part 40 via the connecting part 70. Here, the connecting portion 70 has a structure 71 made of a bar made of a material such as aluminum or steel, and the inner end of this structure 71 is fixed to the frame 51. One end of a wire 72 is connected to the carriage 21 of the sliding section 20, and the other end of the wire 72 and the outer end of the structure 71 are connected.

These connections are made here by providing rings at both ends of the wire 72 and inserting pins 73 into through holes formed in the truck 21 and the structure 71, respectively, and through these rings. It is detachably connected to the load receiving part 50 of 1. However, these connection means are not limited to this, and for example, the trolley 21 and the structure 71 may be directly connected using bolts, welding, or the like. However, by connecting using the pin 73, there is an advantage that the behavior of the first load receiving part 50 is not directly transmitted to the sliding part 40.

In the first load receiving part 50, the front part of the frame 41 of the mounting part 40 is rotatably connected to the front part of the frame 41 so as to support the front part. Here, specifically, a round bar 51a extending horizontally is provided at the front part of the frame 51 of the first load receiving part 50, and the front part of the member located at the outer end of the frame 41 is provided with a round bar 51a extending in the horizontal direction. A circular hole 43a, which is open at the bottom, is formed in a member 43 fixed to the lower surface of the housing. The hole 43a is supported by the round bar 51a, so that the front part of the frame body 41 can rotate relative to the front part of the frame body 51. Note that a stopper 44 is provided on the member 43 to prevent the hole 33a from coming off the round bar 51a due to excessive rotation.

Moreover, the lower part of the support part 80 is connected to the rear part of the frame 51 of each first load receiving part 50 . Here, specifically, a round bar 51b is provided at the rear of the frame 51 so as to extend in the horizontal direction. The support part 80 has a long support body 81, and a member 82 fixed to the lower part of the support body 81 has a circular hole 82a that is open at the bottom. This hole 82a is supported by the round bar 51b, so that the lower part of the support part 80 is rotatable relative to the rear part of the frame 51. Note that a stopper 83 is provided on the member 82 to prevent the hole 82a from coming off the round bar 51b due to excessive rotation.

An adjustment member 84 is fixed to the upper part of the support body 81. The adjustment member 84 is formed with a plurality of through holes 84a that extend through the adjustment member 84 in the horizontal direction and are spaced apart from each other in the longitudinal direction of the support body 81. On the other hand, a member 45 is fixed to the rear part of the member located at the outer end of the frame 41, and a through hole 45a is formed in the member 45 in the horizontal direction. By inserting the pin 85 through one of the plurality of through holes 84a and the through hole 45a, the upper part of the support part 80 is rotatable relative to the rear part of the frame 51. Note that the support body 81, member 82, stopper 83, and adjustment member 84 that constitute the support portion 80 are made of a bar made of a material such as aluminum or steel.

As shown in FIG. 4, the second load receiving section 60 includes a frame body 61 each made of a bar made of a material such as aluminum or steel, and four rotatably provided on the frame body 61. A second roller 62 is provided. The second rollers 62 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 second load receiving section 60 and the mounting section 40 are connected in the same way as the first load section 50 and the mounting section 40 .

That is, the round bar 61a provided in the front part of the frame 61 of the second load receiving part 60 is supported by the hole 43a formed in the member 43 of the frame 41 of the mounting part 40. The front part of the frame 41 of the mounting part 40 is rotatable relative to the front part of the frame 61 of the second load receiving part 60. Further, the round bar 61b provided at the rear of the second load receiving part 60 is supported by the hole 82a formed in the member 82 of the supporting part 80, so that the lower part of the supporting part 80 receives the second load. The receiving part 60 is rotatable relative to the rear part of the frame body 61.

Furthermore, by inserting the pin 85 through one of the plurality of through holes 84a formed in the adjustment member 84 of the support part 80 and the through hole 45a, the upper part of the support part 80 is connected to the second load receiving part 60. It is rotatable relative to the rear part of the frame body 61.

Since the first and second rollers 52 and 62 support the load caused by the plurality of slope blocks B placed on the placement surface S, it is preferable that they have large load-bearing performance. Therefore, it is particularly preferable to use a high-load roller for the second roller 62, 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 60, there are four second rollers 62, and these four second rollers 62 are wider than the first rollers 52. . As a result, even if one second roller 62 falls into the concave portion of the slope block B, the other three second rollers 62 are maintained in contact with the convex portion of the slope block B. Deformation such as bending of the placing part 40 is suppressed, and smooth raising and lowering of the placing part 40 is achieved.

However, the number of first rollers 52 is not limited to two, and may be one or three or more. Further, the number of second rollers 62 is not limited to four, and may be three or less, or five or more.

In this way, both end portions of the mounting portion 40 in the left and right direction are connected to the first load receiving portion 50 and the second load receiving portion 60 via the supporting portions 80, or both to the second load receiving portion. 60 is supported. The support part 80 connects the rear parts of the first and second load receiving parts 50 and 60 and the rear part of the placing part 40, and supports the load that acts when the block B is placed on the placing part 40. is transmitted to the first and second load receiving parts 50 and 60.

The inclination angle of the mounting surface S of the mounting section 40 can be adjusted by selecting which of the plurality of through holes 84a the pin 85 is inserted into. Thereby, even if the slope A on which the transport device 100 is installed has a different inclination angle, the mounting surface S can be made horizontal or approximately horizontal. In addition, in order to make it difficult for the block B placed on the mounting surface S to fall down the slope A, it is preferable to adjust the mounting surface S so that it is inclined slightly forward.

Hereinafter, a method of piling up slope blocks B using the above-mentioned transport device 100 will be described with reference to FIG. 5 as well.

First, a guide rail installation step (S1) is performed in which two guide rails 10 are installed on the slope A so as to extend in parallel in the vertical direction with an interval 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 placing part installation step (S2) is performed in which the placing part 40 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 S of the mounting section 40. 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, which are to be stacked in one row on the slope across the interval between the two guide rails 10, on the mounting surface S. However, only a portion of the slope blocks B that should be stacked in two or more rows or the slope blocks B that should be stacked in one row may be placed on the mounting surface S.

Next, a placing part raising step (S4) is performed in which the placing part 40 is raised along the two guide rails 10. By operating the two hoists 31 simultaneously, the mounting section 40 is raised so that the mounting surface S is located near the installation position of the slope block B placed on the mounting surface S. to stop it.

Next, a slope block lowering step (S5) is performed in which the slope block B placed on the mounting surface S of the mounting section 40 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 40 is lowered along the two guide rails 10. By operating the two hoists 31 at the same time, the placing section 40 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 slope block conveying device 100, each of the loading sections 40 having the loading surface S on which the slope block B is placed has a front portion that is loaded with the first or second load. It is supported by the front part of the receiving parts 50, 60, and its rear part is supported by the rear part of the first or second load receiving part 50, 60 via the supporting part 80.

Therefore, the load of the slope block B acts downwardly on the first and second load receiving parts 50 and 60, so that the load of the slope block B is applied downwardly to the first and second load receiving parts 50 and 60. Compared to the case of supporting, the structure of the first and second load receiving parts 50, 60 themselves and the connection structure between the first and second load receiving parts 50, 60 and the mounting part 40 are simplified. becomes possible.

In addition, in the first and second load receiving parts 50 and 60 that move with the first or second rollers 52 and 62 in contact with the slope surface that slopes upward, the rear parts are connected to each other through the support part 80. Since the mounting portion 40 is supported by the mounting surface S, the angle of inclination of the mounting surface S can be made closer to horizontal compared to the angle of inclination of the slope.

Note that the present invention is not limited to the above-described transport device 100, and can be modified as appropriate. For example, the upper part 41a of the frame 41 is provided along the entire circumference of the mounting plate 42 as equivalent to the falling-off prevention means of the present invention. A drop-off prevention means may be provided only on the rear side of the mounting plate 42. Further, a member serving as a drop-off prevention means may be separately installed on the frame body 41.

DESCRIPTION OF SYMBOLS 10... Guide rail, 11... Abutment, 20... Sliding part, 21... Dolly, 22... Pulley, 30... Lifting means, 31... Hoist, 32... Wire, 40... Placing part, 41... Frame, 41a ... Upper part of the frame (drop-off prevention means), 42... Placement plate, 43... Member, 43a... Hole, 44... Stopper, 45... Member, 45a... Through hole, 50... First load receiving part (load receiving part ), 51...Frame, 51a...Round bar, 51b...Round bar, 52...First roller, 60...Second load receiver, 61...Frame, 61a...Round bar, 61b...Round bar, 62... Second roller, 70... Connection portion, 71... Structure, 72... Wire, 73... Pin, 80... Support part, 81... Support part main body, 82... Member, 82a... Hole, 83... Stopper, 84... Adjustment member , 84a...Through hole, 85...Pin, 100...Slope block conveyor, A...Slope surface, B...Slope block, S...Placement surface.

Claims (3)

A device for transporting slope blocks to be piled up on a slope,
two guide rails installed on the slope so as to extend vertically parallel to each other with an interval;
a sliding part that is guided by the two guide rails so as to be able to move up and down, respectively;
Lifting means for raising and lowering the sliding part along each of the guide rails;
a load receiving part having a plurality of rollers rotatable around a rotating shaft extending in the horizontal direction, each of which is connected to the sliding part;
a placing part having a placing surface on which the slope block can be placed, and whose front part is supported by the front part of the load receiving part;
A slope block conveying device comprising: a support portion that vertically connects a rear portion of the loading portion and a rear portion of the load receiving portion. 2. The slope block conveying device according to claim 1, wherein a connection position between the placing section or the load receiving section and the supporting section can be changed. The slope block conveying device according to claim 1 or 2, further comprising drop-off prevention means around the placement surface to prevent the slope block placed on the placement surface from falling off. .

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