Slope block transport device

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

Technical Field

[0001] The present invention relates to a device for transporting slope blocks.

Background Art

[0002] Blocks made of precast concrete (slope blocks) are sometimes stacked to protect slopes such as cut slopes and embankments. At this time, the slope blocks were moved one by one to the installation position by manual work by workers or a mobile crane such as a wrecker truck. Such moving work was heavy labor and complicated, and it took a long time (see, for example, Patent Document 1).

[0003] Therefore, Patent Document 2 discloses a transport device for transporting slope blocks to the installation position. This transport device includes two guide rails installed on the slope, lifting means capable of raising and lowering the guide rails by a hoisting machine, a load receiving part having rollers, and frames provided to connect the lifting means and the load receiving part and between the load receiving parts in the horizontal direction for placing the mounting plate. Using this transport device, the slope blocks placed on the mounting plate can be transported near the installation position.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the conveying device described in Patent Document 2, the frame that receives the load of the slope block is provided to connect the lifting means and the load receiving part and the load receiving parts with each other in the horizontal direction. Therefore, the connection structure between the frame and these members needs to be robust, which leads to the problem of a complex and heavy structure.

[0006] Furthermore, the mounting surface is almost parallel to the sloping embankment. Therefore, there was a problem in that a mechanism was needed to prevent the embankment blocks from sliding off the mounting plate. In addition, lifting the embankment blocks, which were mounted at an angle, from the mounting plate was difficult from the perspective of the worker's posture and other factors.

[0007] In view of the above, the present invention aims to provide a conveying device for slope blocks that can simplify the structure and reduce the inclination angle of the mounting surface. [Means for solving the problem]

[0008] The slope block transport device of the present invention is a device for transporting slope blocks to be stacked on a slope, and is characterized by comprising: two guide rails installed on the slope so as to extend vertically in parallel to each other at a distance from each other; sliding parts guided by the two guide rails so as to be able to move up and down; a lifting means for raising and lowering the sliding parts along each of the guide rails; a load receiving part having a plurality of rollers that are rotatable about a rotation axis extending horizontally and connected to the sliding parts; a mounting part having a mounting surface on which the slope blocks can be placed, the front part of which is supported by the front part of the load receiving part; and a support part that connects the rear part of the mounting part and the rear part of the load receiving part in the vertical direction.

[0009] According to the slope block conveying device of the present invention, the mounting section, which has a mounting surface on which the slope block is placed, has its front part supported by the front part of the load receiving section, and its rear part supported by the rear part of the load receiving section via a support section. Therefore, since the load of the slope block acts downward on the load receiving section, compared to the case where it is supported by being sandwiched horizontally as in the technology of Patent Document 2, it is possible to simplify the structure of the load receiving section itself and the connection structure between the load receiving section and the mounting section, and consequently reduce the weight.

[0010] Furthermore, in a load-receiving section where the roller moves while in contact with an upward-sloping embankment, the rear part supports the mounting section via a support part, making it possible to make the slope of the mounting surface closer to horizontal compared to the slope angle of the embankment.

[0011] In the slope block conveying device of the present invention, it is preferable that the connection position between the aforementioned mounting portion or the load receiving portion and the support portion can be changed.

[0012] In this case, the connection position between the mounting part or load-receiving part and the support part can be changed according to the slope angle of the embankment, making it possible to bring the slope angle of the mounting surface even closer to horizontal.

[0013] Furthermore, in the slope block conveying device of the present invention, it is preferable to have a means for preventing the slope blocks placed on the aforementioned surface from falling off, around the aforementioned surface.

[0014] In this case, the fall prevention mechanism makes it possible to prevent the slope block placed on the mounting surface from falling off. [Brief explanation of the drawing]

[0015] [Figure 1] A schematic front view showing a slope block transport device according to an embodiment of the present invention installed on a slope. [Figure 2] A schematic front view showing the first load-receiving section and connection section in an enlarged state, with the slope block transport device installed on the slope. [Figure 3] Schematic arrow view taken along line III-III of FIG. 1. [Figure 4] Schematic arrow view taken along line IV-IV of FIG. 1. [Figure 5] Flowchart showing a method of stacking slope blocks.

Embodiment for Carrying Out the Invention

[0016] The conveying device 100 for slope blocks according to an embodiment of the present invention (hereinafter, also simply referred to as the conveying device 100) will be described with reference to the drawings. Note that each drawing is deformed and fine structures are omitted.

[0017] As shown in FIGS. 1 and 2, the conveying device 100 is a device for conveying blocks (slope blocks) B made of precast concrete to an installation position or its vicinity in order to protect the slope A of earth cutting or earth filling. The conveying device 100 includes two guide rails 10, two sliding portions 20, two lifting means 30, three placing portions 40, two first load receiving portions 50, two second load receiving portions 60, two connecting portions 70, and six support portions 80. Note that the first load receiving portion 50 corresponds to the load receiving portion of the present invention.

[0018] The two guide rails 10 are installed on the slope A so as to extend in the vertical direction parallel to each other with a gap therebetween. The two guide rails 10 are installed with a gap larger than the interval of a plurality of continuously arranged slope blocks B stacked horizontally in a row, for example, a gap of 5 m to 10 m. The guide rail 10 is fixed on a support base 11 fixed to the ground with an anchor or the like.

[0019] The guide rail 10 has a strength such that the placing portion 40 can be lifted and lowered stably without lateral displacement even when a plurality of slope blocks B are placed on the placing portion 40. Here, it is configured to be reinforced in a ladder shape. And from the viewpoint of simplifying the transportation of the conveying device 100, it is preferable to reduce the weight by using, for example, an aluminum material as the material of the guide rail 10.

[0020] Each sliding part 20 is provided slidably along the longitudinal direction of the guide rail 10 with respect to each guide rail 10. Here, each sliding part 20 is configured as a carriage 21 having a total of eight wheels arranged in two rows, although not shown in detail. Then, one row of wheels rolls on the U-shaped rail outside the guide rail 10, and the other row of wheels rolls on the U-shaped rail inside the guide rail 10, so that the sliding part 20 can slide along the guide rail 10.

[0021] Furthermore, each sliding part 20 includes guide rollers (not shown) respectively located below each wheel, and these guide rollers are positioned on the inner side and the upper surface of the U-shaped part of the U-shaped rail of the guide rail 10 to guide. Thereby, each sliding part 20 can slide along the guide rail 10 without displacement.

[0022] Each lifting means 30 raises and lowers each sliding part 20 along the guide rail 10. Here, a winch 31 is used as the lifting means 30, but it is not limited thereto.

[0023] Each winch 31 is installed at the upper part of each guide rail 10. The winch 31 is preferably fixed to the ground using an anchor or the like separately from the guide rail 10. Thereby, the stress acting on the guide rail 10 can be reduced, and the weight reduction of the guide rail 10 can be achieved. However, the winch 31 may be fixed to the guide rail 10. An existing product may be used for the winch 31.

[0024] One end of a wire 32 is connected to each hoisting machine 31, and the other end of the wire 32 is fixed to the hoisting machine 31 or the upper end of the guide rail 10 via a pulley 22 installed on the trolley 21 of the sliding part 20. As a result, when the hoisting machine 31 winds up the wire 32, the sliding part 20 rises along the guide rail 10, and when the hoisting machine 31 unwinds the wire 32, the sliding part 20 descends along the guide rail 10. Note that the connection between the hoisting machine 31 and the sliding part 20 is not limited to this, and for example, the other end of the wire 32 may be fixed to the trolley 21 of the sliding part 20.

[0025] When the hoisting operation of the two hoisting machines 31 is started simultaneously, the two sliding parts 20 rise along the guide rail 10 without any misalignment. When the unwinding operation of the two hoisting machines 31 is started simultaneously, the two sliding parts 20 descend along the guide rail 10 without any misalignment. The lifting and lowering speed of the sliding parts 20 is, for example, 1 m / sec to 10 m / sec.

[0026] The operation of the two hoisting machines 31 can be started or stopped by two workers simultaneously operating the operation buttons or other controls installed on each hoisting machine 31, or by one worker simultaneously operating the two remote controls for each hoisting machine 31. Alternatively, a control device that operates both hoisting machines 31 simultaneously may be provided.

[0027] Each mounting section 40 has a mounting surface S on which a slope block B can be placed. In this case, the mounting section 40 has a rectangular frame 41 that is elongated in the horizontal direction when viewed from above, and the lower part of this frame 41 is reinforced by a truss structure or the like, and a mounting plate 42 having the mounting surface S on its upper surface is placed on top of this reinforcement structure. The frame 41 and the reinforcement structure of the mounting section 40 are constructed using rod materials such as H-shaped materials made of materials such as aluminum or steel.

[0028] The mounting plate 42 is made of, for example, a metal plate such as expanded metal or a wooden board. The upper part 41a of the frame 41 is located above the mounting surface S, thereby preventing the slope block B placed on the mounting surface S from falling. The upper part 41a of the frame 41 corresponds to the fall prevention means of the present invention.

[0029] The mounting surface S is large enough to accommodate at least one slope block B, and preferably multiple blocks B arranged horizontally. For example, the mounting surface S is several meters wide and about 1 meter deep.

[0030] The weight of one slope block B is, for example, 10 to 30 kg, and the mounting section 40 has sufficient strength to support, for example, several to 20 such slope blocks B on the mounting surface S.

[0031] The first load-bearing portions 50 are each connected to the inside of the sliding portions 20, and the second load-bearing portions 60 are located between the two first load-bearing portions 50, and there are two of them.

[0032] The connecting portion 70 connects the sliding portion 20 and the first load-receiving portion 50. The mounting portion 40 connects the front of the first load-receiving portion 50 and the front 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 of the first load-receiving portion 50 and the second load-receiving portion 60 to the rear of the mounting portion 40.

[0033] In this example, the conveying device 100 is equipped with two second load-receiving sections 60. However, it is not limited to this, and for example, even if there are three or more second load-receiving sections 60, or even if there are no second load-receiving sections 60 and the first load-receiving sections 50 are directly connected to each other by the mounting section 40, the device may be configured in such a way.

[0034] As shown in Figure 3, the first load-receiving section 50 comprises a frame 51 made of a rod made of a material such as aluminum or steel, and two first rollers 52 rotatably mounted on the frame 51. The first rollers 52 each have their rotation axes extending horizontally and are arranged parallel to each other with a gap between them in the vertical direction.

[0035] The frame 51 is connected to the sliding part 40 via a connecting part 70. Here, the connecting part 70 has a structure 71 made of a rod 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 trolley 21 of the sliding part 20, and the other end of this wire 72 is connected to the outer end of the structure 71.

[0036] In this connection, rings are provided at both ends of the wire 72, and pins 73 are inserted through through holes formed in the trolley 21 and the structure 71, respectively, and through these rings, thereby detachably connecting the sliding part 40 and the first load-receiving part 50. However, the means of connection are not limited to this, and for example, the trolley 21 and the structure 71 may be directly connected using bolts or welding. However, connecting using pins 73 has the advantage that the behavior of the first load-receiving part 50 is not directly transmitted to the sliding part 40.

[0037] In the first load-receiving section 50, the front part is rotatably connected to the front of the frame 41 of the mounting section 40 so as to support the front of the frame 41. Specifically, a round bar 51a extending horizontally is provided at the front of the frame 51 of the first load-receiving section 50, and a circular hole 43a, open at the bottom, is formed in a member 43 fixed to the lower surface of the front of a member located at the outer end of the frame 41. The front of the frame 41 is rotatable relative to the front of the frame 51 because this hole 43a is supported by the round bar 51a. A stopper 44 is provided on the member 43 to prevent excessive rotation and the hole 33a from coming off the round bar 51a.

[0038] Furthermore, the lower part of the support portion 80 is connected to the rear of the frame 51 of each of the first load-receiving portions 50. Specifically, a round bar 51b is provided at the rear of the frame 51 so as to extend horizontally. The support portion 80 has a long support portion body 81, and a circular hole 82a with an open bottom is formed in a member 82 fixed to the lower part of the support portion body 81. The lower part of the support portion 80 is rotatable relative to the rear of the frame 51 because this hole 82a is supported by the round bar 51b. A stopper 83 is provided on the member 82 to prevent excessive rotation and the hole 82a from coming off the round bar 51b.

[0039] An adjustment member 84 is fixed to the upper part of the support body 81. This adjustment member 84 has multiple through holes 84a that penetrate horizontally and are spaced apart in the longitudinal direction of the support body 81. On the other hand, a member 45 is fixed to the rear of a member located at the outer end of the frame 41, and this member 45 has a horizontal through hole 45a. By inserting a pin 85 through one of the multiple through holes 84a and through hole 45a, the upper part of the support 80 is rotatable relative to the rear of the frame 51. The support body 81, member 82, stopper 83, and adjustment member 84 that constitute the support 80 are made of rod material made of aluminum or steel.

[0040] As shown in Figure 4, the second load-bearing section 60 comprises a frame 61 made of a rod made of a material such as aluminum or steel, and four second rollers 62 rotatably mounted on the frame 61. The rotation axes of the second rollers 62 each extend horizontally, and they are arranged in parallel in pairs, close together with a gap between them in the vertical direction.

[0041] The connection between the second load-receiving section 60 and the mounting section 40 is the same as the connection between the first load-receiving section 50 and the mounting section 40.

[0042] Specifically, the round bar 61a provided at the front of the frame 61 of the second load-receiving section 60 is supported by a hole 43a formed in the member 43 of the frame 41 of the mounting section 40, so that the front of the frame 41 of the mounting section 40 is rotatable relative to the front of the frame 61 of the second load-receiving section 60. Furthermore, the round bar 61b provided at the rear of the second load-receiving section 60 is supported by a hole 82a formed in the member 82 of the support section 80, so that the lower part of the support section 80 is rotatable relative to the rear of the frame 61 of the second load-receiving section 60.

[0043] Furthermore, by inserting a pin 85 through one of the multiple through holes 84a formed in the adjustment member 84 of the support portion 80 and through hole 45a, the upper part of the support portion 80 is rotatable relative to the rear part of the frame 61 of the second load-receiving portion 60.

[0044] Since the first and second rollers 52 and 62 support the load from multiple slope blocks B placed on the mounting surface S, it is preferable that they have high load-bearing capacity. Therefore, it is preferable that the second roller 62 in particular uses a roller bearing as its shaft bearing and is a high-load roller in which a high-strength resin such as urethane is directly baked onto the outer circumference. Furthermore, by using such a roller, it is possible to suppress damage to the slope blocks B.

[0045] 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 a recess in the slope block B, the other three second rollers 62 maintain contact with the protrusions of the slope block B, thereby suppressing deformation such as bending of the mounting section 40 and ensuring smooth raising and lowering of the mounting section 40.

[0046] However, the number of the first rollers 52 is not limited to 2; it may be 1 or 3 or more. Also, the number of the second rollers 62 is not limited to 4; it may be 3 or less or 5 or more.

[0047] Thus, the mounting section 40 is supported at both its left and right ends by the first load-receiving section 50 and the second load-receiving section 60, respectively, via the support section 80, or both are supported by the second load-receiving section 60. The support section 80 connects the rear ends of the first and second load-receiving sections 50, 60 to the rear end of the mounting section 40, and transmits the load acting when block B is placed on the mounting section 40 to the first and second load-receiving sections 50, 60.

[0048] Furthermore, by selecting which of the multiple through holes 84a to insert the pin 85 into, the inclination angle of the mounting surface S of the mounting section 40 can be adjusted. This makes it possible to make the mounting surface S horizontal or nearly horizontal even if the inclination angle of the slope A on which the conveying device 100 is installed varies. It is preferable to adjust the mounting surface S to be slightly tilted downwards at the front so that the block B placed on the mounting surface S is less likely to fall down the slope A.

[0049] The following describes how to stack the slope blocks B using the transport device 100 described above, with reference to Figure 5.

[0050] First, a guide rail installation process (S1) is performed in which two guide rails 10 are installed on the slope A so as to be spaced apart and extending parallel to each other in the vertical direction. At this time, it is preferable to stack the bottom row of slope blocks B that are to be piled on the slope A in advance. Also, if the transportation work is not too difficult, the bottom two rows of slope blocks B that are to be piled on the slope A may also be stacked in advance.

[0051] Next, the mounting section installation process (S2) is performed to complete the transport device 100 by installing the mounting section 40 and the lifting means 30. After this mounting section installation process (S2), the bottom row of slope blocks B, etc., to be stacked on the slope A may be stacked.

[0052] Next, a slope block placement process (S3) is performed in which multiple slope blocks B are placed on the placement surface S of the placement section 40. The placement of the slope blocks B may be done manually by workers or using a mobile crane such as a wrecker.

[0053] In this case, it is preferable to place all the slope blocks B, which are to be stacked in a single row on the slope over the distance between the two guide rails 10, on the mounting surface S. However, it is also possible to place only a portion of the slope blocks B that are to be stacked in two or more rows, or a portion of the slope blocks B that are to be stacked in a single row, on the mounting surface S.

[0054] Next, a mounting section raising process (S4) is performed, in which the mounting section 40 is raised along the two guide rails 10. By operating the two hoisting machines 31 simultaneously, the mounting section 40 is raised and stopped so that the mounting surface S is located near the installation position of the slope block B placed on the mounting surface S.

[0055] Next, a slope block lowering process (S5) is performed in which the slope block B, which is 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 can be done manually by a worker.

[0056] Next, the slope block stacking process (S6) is performed, in which the lowered slope block B is stacked on slope A. The stacking of slope block B can be done manually by workers. Since slope block B can be lowered near the installation location, it is possible to reduce the effort required to move slope block B.

[0057] Next, a mounting section lowering process (S7) is performed, in which the mounting section 40 is lowered along the two guide rails 10. By operating the two hoisting machines 31 simultaneously, the mounting section 40 is lowered to its initial lower position and stopped.

[0058] Subsequently, the process from the slope block placement process (S3) to the placement section lowering process (S7) is repeated until the slope blocks B are stacked on slope A to a predetermined height (S8:YES).

[0059] Then, once the stacking of slope blocks B is complete, the final step is to dismantle the transport device 100 in a dismantling process (S9), and the work is completed.

[0060] As described above, according to the slope block transport device 100, each mounting section 40 having a mounting surface S on which the slope block B is placed is supported at its front by the front of the first or second load-receiving section 50, 60, and at its rear by the rear of the first or second load-receiving section 50, 60 via the support section 80.

[0061] Therefore, since the load of the slope block B acts downward on the first and second load-receiving parts 50 and 60, it is possible to simplify the structure of the first and second load-receiving parts 50 and 60 themselves, as well as the connection structure between the first and second load-receiving parts 50 and 60 and the mounting part 40, compared to the case where the blocks are supported by being sandwiched horizontally between them, as in the technology of Patent Document 2.

[0062] Furthermore, in the first and second load-receiving sections 50 and 60, which move with the first or second rollers 52 and 62 in contact with the upward-sloping embankment, the rear portion supports the mounting section 40 via the support section 80, making it possible to bring the angle of inclination of the mounting surface S closer to horizontal compared to the angle of inclination of the embankment.

[0063] It should be noted that the present invention is not limited to the conveying device 100 described above, and can be modified as appropriate. For example, the upper part 41a of the frame 41 is provided around the entire circumference of the mounting plate 42 as a means of preventing detachment in the present invention, but for example, to prevent the slope block B from sliding off, a means of preventing detachment may be provided only on the rear side of the mounting plate 42. Alternatively, a member that serves as a means of preventing detachment may be separately installed on the frame 41. [Explanation of Symbols]

[0064] 10... Guide rail, 11... Support base, 20... Sliding part, 21... Trolley, 22... Pulley, 30... Lifting mechanism, 31... Hoisting machine, 32... Wire, 40... Mounting part, 41... Frame, 41a... Upper part of frame (anti-fall mechanism), 42... Mounting 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-receiving part, 61... Frame, 61a... Round bar, 61b... Round bar, 62... Second roller, 70... Connecting part, 71... Structure, 72... Wire, 73... Pin, 80...Support part, 81...Support part body, 82...Member, 82a...Hole, 83...Stopper, 84...Adjustment member, 84a...Through hole, 85...Pin, 100...Slope block conveying device, A...Slope, B...Slope block, S...Placement surface.

Claims

1. A slope block transport device comprising: two guide rails installed on the slope so as to extend vertically in parallel to each other at intervals, a sliding part guided vertically on each of the two guide rails, a lifting means for raising and lowering the sliding part along each of the guide rails, a plurality of load-receiving parts having a plurality of rollers that are rotatable about a horizontally extending rotation axis and connected to each of the sliding parts, and a mounting part having a mounting surface on which the slope blocks can be placed, wherein The sliding portion and the load-receiving portion are connected via a connecting portion, and adjacent load-receiving portions are connected via the aforementioned mounting portion on which the slope block is placed. Furthermore, in the connection between the load-receiving portion and the aforementioned mounting portion on which the slope block is placed, the front of the load-receiving portion is rotatably connected to the front of the frame of the aforementioned mounting portion by supporting a round bar extending horizontally from the front of the frame of the load-receiving portion, through a circular hole with an open bottom formed in a member fixed to the lower surface of the front of the frame of the mounting portion located at the outer end of the frame of the mounting portion; and the rear of the load-receiving portion is rotatably connected to the rear of the frame of the load-receiving portion by supporting a round bar extending horizontally from the rear of the frame of the load-receiving portion, through a circular hole with an open bottom formed in a member fixed to the lower part of the support body of the support portion, through a round bar extending horizontally from the rear of the frame of the load-receiving portion, and the upper part of the support is rotatably connected to the rear of the aforementioned mounting portion, thereby bringing the inclination of the mounting surface of the aforementioned mounting portion closer to horizontal.

2. The slope block conveying device according to claim 1, characterized in that the connection position between the mounting portion or the load receiving portion and the support portion can be changed.

3. The conveying device for slope blocks according to claim 1 or 2, characterized in that it has a means for preventing the slope blocks placed on the aforementioned mounting surface from falling off, around the mounting surface.

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