JP7630761B2 - Manufacturing method of retaining wall blocks - Google Patents

Description

The present invention relates to a manufacturing method for forming a retaining wall block by connecting and fixing a front panel and a rear panel arranged facing outward at a predetermined interval.

Retaining walls are installed on slopes such as cliffs and river embankments to prevent landslides and other damage. A known method for constructing this type of retaining wall is to stack multiple blocks made of concrete or other materials. The blocks used in the retaining wall are manufactured in a variety of sizes, with larger blocks being larger the lower they are stacked, and smaller blocks being smaller the higher they are stacked, and then transported to the construction site as appropriate for construction.

Retaining wall blocks are manufactured individually for each size, and large blocks can be extremely heavy, which can hinder transportation and construction. To address this issue, a retaining wall block has been proposed that is formed by connecting a front panel that constitutes the front wall surface and a rear panel that constitutes the rear wall surface with connecting members (see Patent Document 1). In this retaining wall block, the connecting members are configured to form a framework plane consisting of upper and lower chord members that are installed between the front and rear panels, and diagonal members that connect one end of the upper chord member to the other end of the lower chord member. In the above-mentioned prefabricated retaining wall block, the width and angle between the two panels can be adjusted depending on the length of the upper chord member, lower chord member, and diagonal member that are the connecting members used, so that retaining wall blocks of various sizes can be formed and weight can be reduced.

In this prefabricated retaining wall block, the upper chord, lower chord, and diagonal members that make up the connecting members are connected to both panels in sequence during assembly. However, simply connecting the upper chord, lower chord, and diagonal members to the separate front and back panels makes it difficult to accurately adjust the width and angle between the two panels, and construction errors are likely to occur in retaining wall blocks assembled to the same standards. Furthermore, assembly without construction errors requires more precise work, which significantly reduces work efficiency. For this reason, assembling retaining wall blocks at the construction site is inefficient and difficult to implement, and they must be assembled in a factory or the like and then transported to the construction site.

When assembled in a factory, etc., they are bulky like concrete retaining wall blocks, so a large storage space is required, and these retaining wall blocks must be transported to the installation site one by one, making it difficult to reduce the transportation work. Therefore, the inventors have invented a manufacturing method that allows the retaining wall blocks to be assembled efficiently with high construction accuracy even at the construction site.

omission

The present invention has been made in consideration of the above-mentioned points, and provides a method for manufacturing retaining wall blocks that allows prefabricated retaining wall blocks to be assembled efficiently and accurately even at a construction site.

That is, in the invention of claim 1, when a front panel (P10) and a rear panel (P20) arranged facing outward are formed into a retaining wall block (B) by a retaining device (100) via a connecting member (1) at a predetermined interval (S1, S2), the front panel (P10) and the rear panel (P20) are each formed with a panel body and a beam portion (P15, P16) provided in a protruding shape on the inside thereof, and the beam portion is formed with an upper connecting portion (P16, P26) and a lower connecting portion (P17, P27) at predetermined positions, respectively. The connecting member (1) is provided between the front panel and the rear panel, with upper mounting parts (12, 13) attached to the upper connecting part on both ends of a first erection main body part (11) erected at the top being spaced apart (S10) by an upper erection distance that defines the predetermined distance (S1), and lower mounting parts (22, 23) attached to the lower connecting part on both ends of a second erection main body part (21) erected at the bottom being spaced apart (S2) by a lower erection distance that defines the predetermined distance (S3). The holding device (100) has a second bridging section (20) provided at a position corresponding to the first bridging section (20) and a bridging section fixing member (30) that fixes the first bridging section and the second bridging section together, and the holding device (100) has a base section (110) on which the front panel and the rear panel are placed, a front panel holding section (120) provided on the base section and having a front panel regulating section that determines the position of the front panel and a front side inclined support section that supports the front panel in an inwardly inclined state, and a front panel holding section (120) that is spaced from the front panel regulating section by a distance corresponding to the predetermined distance (S2). The method for manufacturing a retaining wall block comprises a rear panel holding portion (130) having a rear panel regulating portion that determines the position of the rear panel at a predetermined position, and a connecting member mounting portion (140) that positions the connecting member so that each lower mounting portion (22, 23) of the connecting member is at the same height position as each lower connecting portion (P17, P27) of each panel, and the method for manufacturing a retaining wall block comprises connecting and fixing the front panel and the rear panel via the connecting members at a predetermined height position and at a predetermined interval to form a retaining wall block.

The invention of claim 2 relates to a method for manufacturing retaining wall blocks as described in claim 1 , in which the base portion is provided with a panel side regulating portion for regulating the side position in one direction of the front panel and the rear panel.

The invention of claim 3 relates to a method for manufacturing a retaining wall block as described in claim 1 , wherein the connecting member placement portion is provided with a connecting member adjustment portion for finely adjusting the vertical position of the connecting member.

The invention of claim 4 relates to a method for manufacturing retaining wall blocks as described in claim 1 , wherein the holding device has a panel upper portion adjustment member for finely adjusting the gap between the upper sides of the front panel and the rear panel.

According to the invention of claim 1, when a front panel (P10) and a rear panel (P20) arranged facing outward are formed into a retaining wall block (B) by a retaining device (100) via a connecting member (1) at a predetermined interval (S1, S2), the front panel (P10) and the rear panel (P20) each have a panel body and a beam portion (P15, P16) provided in a protruding shape on the inside thereof, and the beam portion has an upper connecting portion (P16, P26) and a lower connecting portion (P17, P27) formed at predetermined positions, respectively, and the connecting member (1) is connected to the front panel (P10) and the rear panel (P20) at a predetermined interval (S1, S2). Between the panel and the rear panel, a first erection section (10) is provided in which upper mounting sections (12, 13) attached to the upper connecting section on both ends of a first erection main body section (11) erected on the upper side are provided at an interval (S10) of an upper erection distance that defines the predetermined interval (S1), and a second erection section (20) is provided in which lower mounting sections (22, 23) attached to the lower connecting section on both ends of a second erection main body section (21) erected on the lower side are provided at an interval (S20) of a lower erection distance that defines the predetermined interval (S2), and the first erection section and the second erection section are integrated. and a bridge section fixing member (30) for fixing the front panel and the rear panel to the mounting member, and the holding device (100) has a base section (110) on which the front panel and the rear panel are placed, a front panel holding section (120) on the base section, the front panel holding section having a front panel regulating section for determining the position of the front panel and a front side inclined support section for supporting the front panel in an inwardly inclined state, and a rear panel holding section (130) having a rear panel regulating section for determining the position of the rear panel at a position spaced from the front panel regulating section by a distance corresponding to the predetermined interval (S2), and The method for manufacturing retaining wall blocks is characterized in that it is equipped with a connecting member mounting portion (140) that positions the connecting members so that each lower mounting portion (22, 23) of the connecting member is at the same height position as each lower connecting portion (P17, P27) of each panel, and the front panel and the rear panel are connected and fixed via the connecting members at a predetermined height position and at a predetermined interval to form a retaining wall block.This allows retaining wall blocks to be easily obtained with little construction error in the spacing between each panel, and allows retaining wall blocks to be assembled efficiently and precisely even at a construction site.

According to the invention of claim 2, in the invention of claim 1, a panel side regulating portion is provided on the base portion to regulate the side position of one side of the front panel and the rear panel, thereby suppressing lateral shifting of the front panel and the rear panel.

According to the invention of claim 3, in the invention of claim 1, a connecting member adjustment portion is provided in the connecting member mounting portion for finely adjusting the vertical position of the connecting member, thereby reducing errors in the positioning of the height position of the connecting member for retaining wall blocks, and improving work accuracy.

According to the invention of claim 4, in the invention of claim 1, the holding device has a panel upper adjustment member that fine-tunes the gap between the upper sides of the front panel and the rear panel, thereby reducing errors in the placement of the gap between the front panel and the rear panel.

1 is an oblique view of a retaining wall block using a connecting member for retaining wall blocks according to one embodiment of the present invention; FIG. 2 is a side view of a retaining wall block. FIG. 2 is a plan view of a retaining wall block. 13A to 13C are perspective views of the front panel showing variations of the beam portion. 1 is a perspective view of a connecting member for retaining wall blocks; FIG. FIG. 13 is a perspective view of another type of retaining wall block. 1 is a side view illustrating a state in which a panel holding device according to an embodiment of the present invention is used. 8 is a plan view illustrating a state in which the panel holding device of FIG. 7 is used. FIG. FIG. FIG. 2 is a perspective view of the front block holding portion side of the panel holding device. FIG. 2 is a perspective view of the rear block holding portion side of the panel holding device. FIG. 4 is a rear view showing the panel holding device in use. 13 is a side view showing a state in which another embodiment of a panel holding device is used. FIG. 4 is a schematic enlarged view of each adjustment section of the base section, the inclined support section, and the connecting member mounting section. FIG.

Figures 1 to 3 show a retaining wall block B formed using a retaining wall block connecting member 1 according to one embodiment of the present invention. The retaining wall block B is a structure to be installed on the slope of a terrain with a difference in elevation, such as a cliff or a river embankment, and is a prefabricated retaining wall consisting of a front panel P10 and a back panel P20 arranged facing outward and connected and fixed at a predetermined distance. This retaining wall block B is appropriately stacked and installed at the construction site.

The front panel P10 and the rear panel P20 have a panel body (P11, P21) and a beam portion (P15, P25). The panel body P11 of the front panel P10 is a block body that constitutes the front side of the retaining wall block B, and is formed with a predetermined inward inclination as shown in FIG. 2. The panel body P21 of the rear panel P20 is a block body that constitutes the rear side of the retaining wall block B, and is formed in various shapes such as vertical, a predetermined inward inclination, or a predetermined outward inclination depending on the topography of the installation location. In the rear panel P20 of the embodiment shown in FIGS. 1 to 3, the panel body P21 is vertical. In the retaining wall block B, the front panel P10 is usually installed to form a slope with the front panel as the front side, but it can be installed appropriately, such as with the rear panel P20 as the front side, depending on the topography of the installation location.

As shown in Figures 2 and 3, the beam portion P15 (P25) is a protruding portion provided on the inside of the panel body P11 (P21), and is configured to be in a positional relationship opposite the beam portion (front beam portion) P15 of the front panel P10 and the beam portion (back beam portion) P25 of the rear panel P20 when they are arranged opposite each other. An upper connecting portion P16 (P26) and a lower connecting portion P17 (P27) are formed at predetermined positions on this beam portion P15 (P25).

The beam portion P15 (P25) is provided at one or more locations depending on the size of the panel main body P11 (P21), such as the width. For example, in the relatively narrow front panel P10a shown in FIG. 4(a), one beam portion P15 is provided. On the other hand, in the relatively wide front panel P10b shown in FIG. 4(b), multiple (two in the illustrated example) beam portions P15, P15 are provided. The shape of the beam portion P15 is not particularly limited as long as at least the upper connecting portion P16 (P26) and the lower connecting portion P17 (P27) described later can be formed. For example, the beam portion P15 shown in FIG. 4(a) and (b) is formed as a protrusion from the upper to lower part of the inside of the panel main body P11. On the other hand, the beam portion P15 of the front panel P10c shown in FIG. 4(c) is protruded from a part (upper side and lower side) of the inside of the panel main body P11. The shape of the beam portion is not limited to the above forms and can be any appropriate shape. Although not shown, the beams on the rear panel can also be configured in a similar manner.

The upper connecting portion P16 and the lower connecting portion P17 of the front panel P10, and the upper connecting portion P26 and the lower connecting portion P27 of the rear panel P20 are formed at fixed positions according to the product specifications of the front panel P10 and the rear panel P20. In this case, when the front panel P10 and the rear panel P20 are arranged opposite each other, the upper connecting portion P16 of the front panel P10 and the upper connecting portion P26 of the rear panel P20, and the lower connecting portion P17 of the front panel P10 and the lower connecting portion P27 of the rear panel P20 are provided at positions at the same height. In the embodiment, each connecting portion P16, P17, P26, and P27 is made of a receiving hole portion for a bolt member, and is formed on the outer surface of the beam portion P15, P25, respectively. In addition, the upper connecting portion P16 and the lower connecting portion P17 of the front panel P10 are arranged so that the lower connecting portion P17 is diagonally downward of the upper connecting portion P16 so as to have the same inclination as the inclination of the front panel P10. On the other hand, the upper connecting part P26 and the lower connecting part P27 of the rear panel P20 are arranged so that the lower connecting part P27 is located directly below the upper connecting part P26 in correspondence with the vertical rear panel P20.

The front panel P10 and rear panel P20 are connected and fixed at a predetermined interval S1, S2 via a pair of retaining wall block connecting members 1, 1 to form a retaining wall block B, as shown in Figures 2 and 3.

The predetermined interval S1 between the front panel P10 and the rear panel P20 is the interval (distance) at the upper side between the front panel P10 and the rear panel P20 arranged opposite each other, and the predetermined interval S2 between the front panel P10 and the rear panel P20 is the interval (distance) at the lower side between the front panel P10 and the rear panel P20 arranged opposite each other. The predetermined intervals S1 and S2 between the panels P10 and P20 may be set based on any part as long as they are constant for retaining wall blocks of the same standard. In the embodiment, the distance (interval) between the outer upper end P12 of the front panel P10 and the outer upper end P22 of the rear panel P20 is set as the upper predetermined interval S1, and the distance (interval) between the outer lower end P13 of the front panel P10 and the outer lower end P23 of the rear panel P20 is set as the lower predetermined interval S2.

As shown in Figs. 1 to 3 and 5, the connecting member 1 for retaining wall blocks has a first erection section 10, a second erection section 20, and an erection section fixing member 30. The first erection section 10 has a first erection main body section 11 that is erected at the top between the front panel P10 and the rear panel P20, and upper mounting sections 12 and 13 that are provided on both ends of the first erection main body section 11. The first erection main body section 11 is made of an appropriate rod-shaped member that can be erected at the top side between the panels P10 and P20. In the embodiment, the first erection main body section 11 is made of a rod-shaped member that is L-shaped when viewed from the side as shown in the figure, from the standpoint of strength, etc.

The upper mounting parts 12, 13 are attached to the upper connecting parts P16, P26 of each panel P10, P20. The front upper mounting part 12 and the rear upper mounting part 13 are provided on the first installation body part 11 with a distance S10 (described below) that is the upper installation distance that defines the upper predetermined distance S1 between the front panel P10 and the rear panel P20.

The second erection section 20 has a second erection main body section 21 that is erected at the bottom between the front panel P10 and the rear panel P20, and lower mounting sections 22, 23 that are provided on both ends of the second erection main body section 21. The second erection main body section 21 is made of an appropriate rod-shaped member that can be erected at the bottom between the panels P10, P20. In the embodiment, the second erection main body section 21 is made of a rod-shaped member that is L-shaped when viewed from the side as shown in the figure, from the standpoint of strength, etc.

The lower mounting parts 22, 23 are attached to the lower connecting parts P17, P27 of each panel P10, P20. The front side lower mounting part 22 and the rear side lower mounting part 23 are provided on the second installation main body part 21 with a distance S20 (described later) that is the upper installation distance that defines the lower predetermined distance S2 between the front panel P10 and the rear panel P20.

The mounting parts 12, 22, 13, 23 of the embodiment are made of mounting holes fixed by bolt members together with the receiving hole parts (connecting parts) P16, P17, P26, P27 of the front panel P10 and the rear panel P20. That is, the bolt members pass through the mounting holes (mounting parts) 12, 22, 13, 23 and are screwed into the receiving hole parts P16, P17, P26, P27, so that the retaining wall block connecting member 1 having the mounting holes 12, 22, 13, 23 is fixed to the beam parts 15, 25 having the receiving hole parts P16, P17, P26, P27. The mounting holes (mounting parts) 12, 22, 13, 23 can be provided in the erection main body parts 11, 21 by an appropriate method, but it is possible to provide them in more accurate positions by using a known laser processing method, for example.

The installation section fixing member 30 is a member that fixes the first installation section 10 and the second installation section 20 together and determines the relative positions of the upper mounting sections 12, 13 and the lower mounting sections 22, 23. The installation section fixing member 30 is made of an appropriate member that can fix the first installation section 10 and the second installation section 20 together. The installation section fixing member 30 in the embodiment is made of a rod-shaped member that is installed between the first installation section 10 and the second installation section 20 from the viewpoint of weight reduction, etc. Furthermore, one or more rod-shaped installation section fixing members 30 are provided depending on the length (installation distance) of the first installation section 10 and the second installation section 20, etc.

Here, the positional relationship between the upper mounting parts 12, 13 and the lower mounting parts 22, 23 will be explained. The space S10 for the upper installation distance corresponds to the distance (space) between the upper connecting part P16 of the front panel P10 and the upper connecting part P26 of the rear panel P20 in the retaining wall block B in the assembled state. The space S20 for the lower installation distance corresponds to the distance (space) between the lower connecting part P17 of the front panel P10 and the lower connecting part P27 of the rear panel P20 in the retaining wall block B in the assembled state.

On the other hand, in each panel P10, P20, the upper connecting parts P16, P26 and the lower connecting parts P17, P27 are formed at fixed positions according to the product standards of each panel P10, P20. Then, in retaining wall blocks of the same standard, the upper connecting parts P16, P26 and the lower connecting parts P17, P27 are formed at fixed positions of the beam parts P15, P25 of each panel P10, P20. In retaining wall block B in which the panels P10, P20 are arranged at predetermined intervals (S1, S2), the distance between the upper connecting parts P16, P26 and the distance between the lower connecting parts P17, P27, as well as the relative positions of the connecting parts P16, P17, P26, P27, are constant according to the product standards.

Therefore, in the retaining wall block connecting member 1, the positional relationship of each mounting portion 12, 22, 13, 23 is set so as to match the positional relationship of each connecting portion P16, P17, P26, P27 of the assembled retaining wall block B. That is, the upper mounting portions 12, 13 are formed on both ends of the first erection main body portion 11 by setting a spacing S10 of the upper installation distance equivalent to the distance between the upper connecting portions P16, P26 in accordance with the product standards, and similarly, the lower mounting portions 22, 23 are formed on both ends of the second erection main body portion 21 by setting a spacing S20 of the lower installation distance equivalent to the distance between the lower connecting portions P17, P27 in accordance with the product standards. In addition, the first erection section 10 and the second erection section 20 are positioned so that the mounting sections 12, 22, 13, and 23 correspond to the relative positions of the connecting sections P16, P17, P26, and P27 according to the product standards, and the two are fixed together by the erection section fixing member 30, thereby determining the relative positions of the mounting sections 12, 22, 13, and 23 of the connecting member 1 for retaining wall blocks.

When assembling the retaining wall block B, the front panel P10 and the rear panel P20 are simply connected via the retaining wall block connecting member 1 configured as described above, and a retaining wall block B can be easily obtained with little construction error in the spacing (S1, S2) between each panel P10, P20.

In addition, if each connecting portion P16, P17, P26, P27 of each panel P10, P20 is a receiving hole portion for a bolt member, and each mounting portion 12, 22, 13, 23 of the connecting member 1 is a corresponding mounting hole portion, the connecting work can be easily performed with a simple structure, and the work efficiency is excellent. In the relationship between the receiving hole portion (connecting portion P16, P17, P26, P27) and the mounting hole portion (mounting portion 12, 22, 13, 23), in order to enable fixation with a bolt member, the diameter of the mounting hole portion (mounting portion 12, 22, 13, 23) is made equal to or larger than the diameter of the receiving hole portion (connecting portion P16, P17, P26, P27). In particular, from the viewpoint of achieving both work efficiency and construction accuracy, the diameter of the mounting hole portion (mounting portion 12, 22, 13, 23) is preferably 0.5 to 5 mm larger than the diameter of the receiving hole portion (connecting portion P16, P17, P26, P27), and more preferably 1 to 3 mm larger. If the diameter of the mounting hole portion (mounting portion 12, 22, 13, 23) is too small, it may be difficult to match it with the receiving hole portion (connecting portion P16, P17, P26, P27), which may reduce work efficiency, and if the diameter of the mounting hole portion (mounting portion 12, 22, 13, 23) is too large, construction errors may increase. In the embodiment, the diameter of the receiving hole portion (connecting portion P16, P17, P26, P27) is 16 mm, while the diameter of the mounting hole portion (mounting portion 12, 22, 13, 23) is 18 mm.

Next, variations of retaining wall blocks will be described. The retaining wall block B1 shown in Figure 2 is an example having a front panel P10 that slopes inward and a vertical rear panel P20a. The retaining wall block connecting member 1A used for the retaining wall block B1 has a lower installation distance interval S20 that is longer than the upper installation distance interval S10, and the front lower installation portion 22 is positioned diagonally downward outward from the front upper installation portion 12, while the rear lower installation portion 23 is positioned directly below the rear upper installation portion 13.

The retaining wall block B2 shown in FIG. 6(a) is an example in which the rear panel P20b is formed with a predetermined inclination toward the outside. In particular, the front panel P10 and the rear panel P20b are arranged facing each other in approximately parallel relation. The retaining wall block connecting member 1B used for the retaining wall block B2 has an equal spacing S10 for the upper installation distance and a spacing S20 for the lower installation distance, and the front lower installation portion 22 is arranged diagonally downward outward from the front upper installation portion 12, and the rear lower installation portion 23 is arranged diagonally downward inward from the rear upper installation portion 13. In particular, since the front panel P10 and the rear panel P20b are arranged approximately parallel, the line connecting the front upper installation portion 12 and the lower installation portion 22 is configured to be approximately parallel to the line connecting the rear upper installation portion 13 and the lower installation portion 23.

The retaining wall block B3 shown in Figure 6 (b) is an example in which the rear panel P20c is formed with a specified inward inclination. The retaining wall block connecting member 1C used for the retaining wall block B3 has a lower installation distance interval S20 that is longer than the upper installation distance interval S10, and the front lower installation portion 22 is disposed diagonally outwardly and downwardly of the front upper installation portion 12, and the rear lower installation portion 23 is disposed diagonally outwardly and downwardly of the rear upper installation portion 13.

The retaining wall blocks B1, B2, and B3 shown in Figures 2, 6(a), and 6(b) are appropriately selected and used depending on the topography of the installation location. Furthermore, the shapes of the retaining wall blocks are not limited to these forms, and as can be seen from the retaining wall blocks B1, B2, and B3, by using the retaining wall block connecting member 1 in which the spacing S10 for the upper installation distance, the spacing S20 for the lower installation distance, and the relative positions of the mounting parts 12, 22, 13, and 23 are appropriately set correspondingly, retaining wall blocks of various shapes and sizes can be formed. Therefore, retaining wall blocks with a narrow spacing between the front panel and the back panel for stacking can also be easily formed.

When using the retaining wall block connecting member 1 of the present invention to connect a front panel P10 and a rear panel P20 to form a retaining wall block B, it is preferable to use a panel holding device 100 shown in Figures 7 and 8. This panel holding device 100 includes a base portion 110, a front panel holding portion 120, and a rear panel holding portion 130.

The base 110 is a platform-like member on which the front panel P10 and the back panel P20 are placed. There are no particular limitations on the shape of the base 110, so long as it has the strength to withstand the weight of the panels P10 and P20 when placed on it. In the embodiment, the base 110 is formed in a lattice shape as shown in FIG. 9, from the perspective of reducing weight, etc.

As shown in Figs. 9 and 10, the base 110 is preferably provided with a front beam mounting portion 111 on which the front beam P15 of the front panel P10 is placed. Also, as shown in Figs. 9 and 11, it is preferably provided with a spine mounting portion 112 on which the spine P25 of the rear panel P20 is placed. The front beam mounting portion 111 and the spine mounting portion 112 widen the ground contact areas on the inward side of the front panel P10 and the rear panel P20, improving the stability of each panel P10, P20.

As shown in Figs. 8, 9 and 12, the base 110 is preferably provided with a panel side restriction portion 115 that restricts the positions of the side portions (P14, P24) of the front panel P10 and the rear panel P20 on one side. The panel side restriction portion 115 aligns the side portions P14, P24 of the front panel P10 and the rear panel P20 on one side, thereby suppressing lateral displacement between the two. The shape of the panel side restriction portion 115 is not particularly limited as long as it is possible to align the side portions P14, P24 of the front panel P10 and the rear panel P20 on one side. The panel side restriction portion 115 of the embodiment is provided over almost the entire length of one side of the base 110 and is made of a rod member that is approximately L-shaped in side view and has a side abutment surface 116 that can be abutted by both the side portions P14, P24 of the one side of each panel P10, P20.

As shown in Figs. 7, 9 and 10, the front panel holding portion 120 is a portion that holds the front panel P10 in a predetermined inclined state, and has a front panel restricting portion 121 and a front inclined support portion 125. The front panel restricting portion 121 is a member that restricts the position of the outer surface side lower end P13 of the front panel P10 to determine the position of the front panel P10. The shape of the front panel restricting portion 121 and the shape of the front panel P10 are not particularly limited as long as they are capable of restricting the position of the outer surface side lower end P13. The front panel restricting portion 121 of the embodiment is provided on the front side edge of the base portion 110 over a length equivalent to the width of the front panel P10, and is made of a rod member that is approximately L-shaped in side view and has a front abutment surface 122 against which the outer surface side lower end P13 of the front panel P10 can abut.

The front inclined support portion 125 is a member that supports the front panel P10 in an inwardly inclined state. This front inclined support portion 125 has an inclined support body 126 configured with a predetermined inclination angle, and the inner part of the front panel P10 abuts against the inclined support body 126 to maintain the inclined state of the front panel P10. In addition, the front inclined support portion 125 may support either the panel body P11 or the front beam portion P15 as long as it is the inner part of the front panel P10, but from the viewpoint of reducing the error in the inclination angle and improving the construction accuracy, it is preferable to support the part with less unevenness at the abutment portion. For example, in the front panel P10, the inner side of the front beam portion P15 tends to have less unevenness compared to the inner side of the panel body P11, so the front inclined support portion 125 is configured to support the front beam portion P15. In the embodiment, the front inclined support portion 125 has the inclined support body 126 formed in a fence shape as shown in the figure from the viewpoint of weight reduction, etc.

The rear panel holding portion 130, as shown in Figs. 7 and 9, is a portion that determines the position of the rear panel P20 and has a rear panel restricting portion 131. The rear panel restricting portion 131 is a member that determines the position of the rear panel P20 at a position spaced apart from the front panel restricting portion 121 by a distance corresponding to the predetermined distance S2 on the lower side. The rear panel restricting portion 131 of the embodiment is a rod member that is approximately L-shaped in side view and is provided over a length corresponding to the width of the rear panel P20 and has a rear abutment surface 132 against which the rear panel P20 can abut. In addition, the rear panel holding portion 130 further has rear inclined support portions (135a, 135b) as shown in Fig. 13 according to the shape of the rear panel P20.

The rear panel holding portion 130a shown in FIG. 7 holds a vertical rear panel P20a, and the rear panel restricting portion 131a is disposed at a predetermined distance S2 from the front panel restricting portion 121 and restricts the position of the outer surface (outer surface lower end P23) of the rear panel P20a to determine the position of the rear panel P20. Since the vertical rear panel P20a is self-supporting, if the rear panel restricting portion 131a restricts the position of the outer surface lower end P23 of the rear panel P20a to a position at a predetermined distance S2 from the front panel restricting portion 121, the rear panel P20a can be positioned in an appropriate position.

The stability of the rear panel P20 is improved by placing the back beam P25 on the back beam support portion 112, so the vertical rear panel P20a can stand on its own more stably. In addition, even if the inclination is small, such as the rear panel P20c shown in FIG. 6(b), the rear panel can stand on its own stably. If the rear panel can stand on its own in this way, the rear panel holding portion is composed of a rear panel restricting portion 131a that restricts the outer lower end portion (P23) of the rear panel.

The rear panel holding portion 130b shown in FIG. 13(a) holds the outwardly inclined rear panel P20b, and has a rear panel restricting portion 131b and a rear inclined support portion 135a. The rear panel restricting portion 131b restricts the position of the inner side lower end P23a so that the outer side lower end P23 of the rear panel P20b is spaced a predetermined distance S2 from the front panel restricting portion 121.

The rear inclined support portion 135a is a member that supports the rear panel P20b in an outwardly inclined state. This rear inclined support portion 135a has an inclined support body (outer inclined support body) 136a that is configured at a predetermined inclination angle and supports the outer portion of the rear panel P20b. In the embodiment, the rear inclined support portion 135a has the inclined support body 136a formed in a fence shape, similar to the front inclined support portion 125, from the viewpoint of weight reduction, etc.

The rear panel holding portion 130c shown in FIG. 13(b) holds the rear panel P20d inclined inward, and has a rear panel regulating portion 131b and a rear inclined support portion 135b. The rear inclined support portion 135b is a member that supports the rear panel P20d in an inwardly inclined state. This rear inclined support portion 135b has an inclined support body (inner inclined support body) 136b that is configured at a predetermined inclination angle and supports the inner part of the rear panel P20d. This rear inclined support portion 135b, like the front inclined support portion 125, preferably supports a part of the abutment portion with less unevenness, and is configured to support the back beam portion P25 of the rear panel P20d. Also, in the embodiment of the rear inclined support portion 135b, the inclined support body 136b is formed in a fence shape like the rear inclined support portion 135a.

In this way, when installing an inclined rear panel (P20b, P20d) that is difficult to stand on its own, the inclined state of the rear panel can be properly maintained by the rear inclined support parts 135a, 135b.

In addition, when forming a retaining wall block for stacking, the higher the stacking position of the retaining wall block, the narrower the gap between the front panel and the rear panel. Therefore, in the panel holding device 100, at least one of the front panel holding part 120 and the rear panel holding part 130 is configured to be movable. For example, the front panel restricting part 121 and the front side inclined support part 125 of the movable front panel holding part 120, and the rear panel restricting parts 131a, 131b and the rear side inclined support parts 135a, 135b of the movable rear panel holding part 130 are each removable. Then, by appropriately installing the front panel holding part 120 and the rear panel holding part 130 at a position with a gap according to the stacking position, it is possible to easily respond to the formation of a retaining wall block for stacking. From the standpoint of structural simplicity and easy workability, it is preferable that the attachment and detachment structure of the front panel holding part 120 and the rear panel holding part 130 be a structure in which receiving holes for bolt fastening are provided at appropriate positions on the base part 110, allowing attachment and detachment using bolt members or the like.

7, the panel holding device 100 is provided with a connecting member mounting section 140 for mounting the connecting member 1 for retaining wall blocks on the base section 110 as necessary. The connecting member mounting section 140 positions the connecting member 1 so that the lower mounting sections 22, 23 of the connecting member 1 are at substantially the same height position as the lower connecting sections P17, P27 of the panels P10, P20, and has a mounting main body section 141 on which the connecting member 1 is mounted, and a raised section 142 that raises the mounting main body section 141 to correspond to the height positions of the lower connecting sections P17, P27 of the panels P10, P20. In this connecting member mounting section 140, the lower mounting parts 22, 23 of the connecting member 1 mounted on the mounting body 141 are at approximately the same height as the lower connecting parts P17, P27 of the panels P10, P20, so when connecting each panel P10, P20 to the retaining wall block connecting member 1, no special auxiliary work such as supporting the retaining wall block connecting member 1 at the mounting height is required, and the connecting member can be easily attached, improving work efficiency.

In addition, in the panel holding device 100, as necessary, as shown in FIG. 14, adjustment units (panel height adjustment unit 117, front inclination adjustment unit 127, rear inclination adjustment unit, connecting member adjustment unit 147) for finely adjusting the position of each panel P10, P20 may be appropriately provided on the base unit 110, the front inclination support unit 125, the rear inclination support unit 135, and the connecting member mounting unit 140. Well-known adjuster members are preferably used as each of the adjustment units 117, 127, 137, and 147.

The panel height adjustment unit 117 shown in FIG. 14(a) is a member for finely adjusting the vertical position of the rear panel P20, and is provided at an appropriate location on the base unit 110 where the rear panel P20 can be placed, and is configured to push up the rear panel P20 from the bottom surface of the panel main body P21 to finely adjust the vertical position.

The front tilt adjustment unit 127 (back tilt adjustment unit 137) shown in FIG. 14(b) is a member for finely adjusting the tilt angle of the front panel P10 (back panel P20), and is provided on the front tilt support unit 125 (back tilt support unit 135) of the front panel holding unit 120 (back panel holding unit 130). The front tilt adjustment unit 127 and the back tilt adjustment unit 137 are configured to be able to finely adjust the tilt angle by pushing up each panel P10, P20 from below in the tilt direction. For example, the front tilt adjustment unit 127 pushes up the inwardly tilted front panel P10 from the inside to finely adjust the tilt angle. On the other hand, the back tilt adjustment unit 137 has a structure similar to that of the front tilt adjustment unit 127 as shown in the figure, and if the back panel P20 is tilted outward, it pushes up the back panel P20 from the outside to finely adjust the tilt angle. Although not shown, if the rear panel is inclined inward, the rear inclination adjustment unit pushes up the rear panel from the inside to fine-tune the inclination angle.

The connecting member adjustment section 147 shown in FIG. 14(c) is a member that finely adjusts the vertical position of the connecting member 1 for retaining wall blocks placed on the connecting member placement section 140, and is provided on the placement body section 141 of the connecting member placement section 140, and is configured to push up the connecting member 1 for retaining wall blocks from below to adjust the vertical position.

In this way, by providing adjustment sections 117, 127, 137, 147 on each of the base section 110, front inclined support section 125, rear inclined support section 135, and connecting member mounting section 140, it is possible to reduce errors in the positioning of each panel P10, P20, and connecting member 1 for retaining wall blocks, such as the height position of the rear panel P20, the inclination angle of the front panel P10 and rear panel P20, and the height position of the connecting member 1 for retaining wall blocks, thereby improving work accuracy.

In the panel holding device 100, as shown in Figs. 7 and 8, a panel upper adjustment member 150 may be provided to finely adjust the gap S1 between the upper sides of the front panel P10 and the rear panel P20, as necessary. The panel upper adjustment member 150 has a front gripping member 151 that grips the upper part of the front panel P10, a rear gripping member 152 that grips the upper part of the rear panel P20, and a gap adjustment member 155 that connects the front gripping member 151 and the rear gripping member 152 and widens or narrows the gap between them. A known turnbuckle member or the like is preferably used as the gap adjustment member 155. In this panel upper adjustment member 150, the gap between the front gripping member 151 and the rear gripping member 152 can be widened or narrowed by operating the gap adjustment member 155. Therefore, the spacing S of the upper sides of each panel P10, P20 held by each holding member 151, 152 can be finely adjusted to reduce errors in the placement of the spacing between each panel P10, P20.

Next, we will explain how to assemble a retaining wall block using the panel holding device 100. Note that in the following example, the rear panel P20 is a vertical panel that can stand on its own.

First, the front panel P10 and the rear panel P20 are transported onto the base 110 by a transport device such as a crane, and the front panel P10 is placed on the front panel holding section 120, and the rear panel P20 is placed on the rear panel holding section 130. The front panel P10 is held in an inwardly tilted state with its inner portion (front beam section 15) supported by the front inclined support section 125 and its outer lower end P13 abutting against the front panel restricting section 121. The rear panel P20 is held in a self-supporting state with its outer lower end P23 abutting against the rear panel restricting section 131. At this time, the side portions P14 and P24 of the front panel P10 and the rear panel P20 on one side are abutted against the panel side restricting section 115, respectively. Therefore, the front panel P10 and the rear panel P20 are arranged opposite each other on the base 110 with a predetermined distance S1 and S2 while preventing lateral slippage.

Next, the retaining wall block connecting member 1 is placed on the outer surface of each beam portion P15, P25 of each panel P10, P20. At this time, the retaining wall block connecting member 1 is placed on the connecting member placement portion 140, so that the lower mounting portions 22, 23 are placed at approximately the same height position as the lower connecting portions P17, P27 of each panel P10, P20 without the worker having to perform auxiliary work such as lifting and supporting. Therefore, for example, for one connecting member 1, even a single worker can place the mounting portions 12, 22, 13, 23 of the retaining wall block connecting member 1 at appropriate connecting positions corresponding to the connecting portions P16, P17, P26, P27 of each panel P10, P20. Note that when the front panel P10, the back panel P20, and the retaining wall block connecting member 1 are placed, the respective positions may be fine-tuned by the respective adjustment portions (117, 127, 147).

After the above arrangement is completed, the mounting parts 12, 22, 13, 23 are connected to the connecting parts P16, P17, P26, P27 using bolt members. The connecting procedure is, for example, to provisionally fasten the upper connecting part P16 between the upper mounting part 12 on the front side and the front panel P10, the lower connecting part P17 between the lower mounting part 22 on the front side and the front panel P10, the lower connecting part P27 between the lower mounting part 23 on the rear side and the rear panel P20, and the upper connecting part P26 between the upper mounting part 13 on the rear side and the rear panel P20 in that order, and after each provisional fastening is properly completed, the final fastening is performed in the same order. Note that the connecting procedure is not limited to this, and can be performed in any appropriate procedure that is less likely to cause distortion, etc.

In addition, when connecting a pair of connecting members 1,1 for retaining wall blocks, the occurrence of distortion can be more effectively suppressed by connecting the same parts in sequence. For example, when one worker is performing the work, the procedure can be such that each mounting portion 12, 22, 13, 23 is alternately connected to each connecting portion P16, P17, P26, P27. For more efficient and highly accurate connection, it is preferable to have one worker (total of two people) connect each connecting member 1,1 simultaneously. In this way, a pair of connecting members 1,1 for retaining wall blocks is connected between the front panel P10 and the rear panel P20 to obtain a retaining wall block B.

As described above, by using the retaining wall block connecting member 1 of the present invention, the front panel P10 and the rear panel P20 can be easily connected with minimal construction error and high precision. In particular, by holding the front panel P10 and the rear panel P20 with the panel holding device 100, a retaining wall block B can be easily obtained by simply placing and connecting a pair of retaining wall block connecting members 1, 1 between each panel P10, P20. Therefore, the retaining wall block B can be assembled efficiently and precisely even at the construction site.

The connecting member for retaining wall blocks and the panel holding device of the present invention are not limited to the above-mentioned embodiment, and can be implemented by appropriately modifying parts of the configuration within the scope of the spirit of the invention.

The connecting member for retaining wall blocks of the present invention and the panel holding device using this connecting member make it easy to obtain prefabricated retaining wall blocks with minimal construction error. In particular, it makes it possible to easily assemble retaining wall blocks even at the construction site. Therefore, it is promising as an alternative to conventional connecting members for prefabricated retaining wall blocks.

LIST OF SYMBOLS 1, 1A, 1B, 1C Connecting member for retaining wall blocks 10 First erection section 11 First erection main body section 12 Upper mounting section on front side 13 Upper mounting section on rear side 20 Second erection section 21 Second erection main body section 22 Lower mounting section on front side 23 Lower mounting section on rear side 30 Erection section fixing member 100 Panel holding device 110 Base section 111 Front beam section mounting section 112 Back beam section mounting section 115 Panel side regulating section 116 Side abutment surface 117 Panel height adjustment section 120 Front panel holding section 121 Front panel regulating section 122 Front abutment surface 125 Front inclined support section 126 Inclined support main body 127 Front inclination adjustment section 130, 130a, 130b, 130c Rear panel holding section Description of the symbols 131, 131a, 131b Rear panel regulating portion 132 Rear abutment surface 135a, 135b Rear inclined support portion 136a, 136b Inclined support body 137 Rear inclination adjustment portion 140 Connecting member mounting portion 141 Mounting body portion 142 Height portion 147 Connecting member adjustment portion 150 Panel upper portion adjustment member 151 Front gripping member 152 Rear gripping member 155 Spacing adjustment portion B, B1, B2, B3 Retaining wall block P10 Front panel P11 Panel body of front panel P12 Outer upper end portion of front panel P13 Outer lower end portion of front panel P14 Side portion on one side of front panel P15 Front beam portion P16 Upper connecting portion of front panel P17 Lower connecting portion of front panel P20, P20a, P20b, P20c Rear panel P21 Panel body of rear panel P22 Outer upper end of rear panel P23 Outer lower end of rear panel P23a Inner lower end of rear panel P24 Side portion on one side of rear panel P25 Back beam portion P26 Upper connecting portion of rear panel P27 Lower connecting portion of rear panel S1 Specified upper gap between front panel and rear panel S2 Specified lower gap between front panel and rear panel S10 Gauge for upper installation distance S20 Gauge for lower installation distance

Claims (4)

When forming a retaining wall block (B) by using a holding device (100) to connect a front panel (P10) and a rear panel (P20) facing outward with a predetermined distance (S1, S2) between them via a connecting member (1),
The front panel (P10) and the rear panel (P20) are each formed with a panel body and a beam portion (P15, P16) provided in a protruding shape on the inner side thereof.
The beam portion is formed at a predetermined position with upper connecting portions (P16, P26) and lower connecting portions (P17, P27),
The connecting member (1) is
Between the front panel and the rear panel,
The first erection section (10) has upper mounting sections (12, 13) attached to the upper connecting section on both ends of a first erection main body section (11) erected at the top, the upper mounting sections (12, 13) being provided at an interval (S10) corresponding to an upper erection distance that defines the predetermined interval (S1), a second erection section (20) has lower mounting sections (22, 23) attached to the lower connecting section on both ends of a second erection main body section (21) erected at the bottom, the lower mounting sections (22, 23) being provided at an interval (S20) corresponding to a lower erection distance that defines the predetermined interval (S2), and an erection section fixing member (30) that fixes the first erection section and the second erection section together,
The holding device (100) comprises:
A base portion (110) on which the front panel and the rear panel are placed;
The base part has
a front panel holding section (120) having a front panel regulating section that determines the position of the front panel and a front side inclined support section that supports the front panel in an inwardly inclined state, and a rear panel holding section (130) having a rear panel regulating section that determines the position of the rear panel at a position spaced from the front panel regulating section by a distance corresponding to the predetermined interval (S2);
a connecting member placement section (140) for placing the connecting member such that each lower mounting section (22, 23) of the connecting member is at the same height position as each lower connecting section (P17, P27) of each panel;
A method for manufacturing a retaining wall block, characterized in that the front panel and the rear panel are connected and fixed at a predetermined height and at predetermined intervals via the connecting members to form a retaining wall block . 2. The method for manufacturing a retaining wall block according to claim 1 , wherein the base portion is provided with a panel side regulating portion for regulating the side position of one side of the front panel and the rear panel. 2. The method for manufacturing a retaining wall block according to claim 1 , wherein the connecting member placement portion is provided with a connecting member adjustment portion for finely adjusting the vertical position of the connecting member. 2. The method for manufacturing a retaining wall block according to claim 1 , wherein the retaining device has a panel upper portion adjustment member for finely adjusting the gap between the upper sides of the front panel and the rear panel.

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