JPH084248Y2 - Forming mold for corner block of retaining wall - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for molding a retaining wall block, and more particularly to a mold for molding a corner block used at a corner of a terrace.

[0002]

2. Description of the Related Art As a mold for molding a corner block of an L-shaped retaining wall, there is a mold described in Japanese Utility Model Laid-Open No. Sho 63-3406. This formwork is to be filed by the applicant of the present invention. Two inner surface molding frames which are rotatable and fixable around a center post planted on a base are connected to each other by connecting members on opposite sides. A cavity for block molding is formed between the two outer surface molding frames, and at least one of the inner surface molding frames is rotated around the center post to change the angle between the two inner surface molding frames. In addition, the corner angle of the block to be molded can be continuously changed by exchanging the connecting member or utilizing its flexibility to change the angle formed between the two outer surface forming frames. The present invention has a feature that various corner blocks having different corner angles can be molded with one mold.

[0003]

When it is desired to change the corner angle of the above-mentioned formwork, one of the inner forming frames must be lifted with a crane or the like, rotated around the center post, and fixed at a new position. It is usually done.

However, when only one of the inner surface forming frames is rotated around the center post to change the corner angle, it is necessary to rotate only one of the outer surface forming frames facing the rotated inner surface forming frame. As shown in FIG. 9, since the left and right wall thicknesses of the molded block are different, the corner angle of the outer surface molding frame is changed and the outer surface molding frame is laterally moved to move the left and right wall thicknesses of the molded block. The thickness should be equal.

As described above, in the conventional corner block forming mold, the work at the time of changing the corner angle is considerably troublesome, and particularly when high accuracy is required for the corner angle, a heavy forming frame is lifted by a crane. Since it is difficult to stop at an accurate position, it often happens that the inner and outer molding frames must be rotated many times in order to achieve the specified angle. There was a problem that the work load and the work time would become very large when trying to raise it.

In view of the above problems, it is an object of the present invention to make it easier to change the corner angle of a corner block molding frame whose corner angle can be changed.

[0007]

A formwork of the present invention is a corner block having a structure in which two inner surface forming frames 6 are rotatably connected around a center post 2 erected on a base 1. In the molding frame, an operation block 16 is provided that moves linearly in a reciprocating manner in a direction that bisects the apex angle of the two inner surface molding frames 6.
A linear drive mechanism such as a screw rod 14 for moving the operating block, the operating block 16 and two inner surface forming frames 6
A link 17 of equal length is provided to connect the respective intermediate portions of the.

[0008]

When the operating block 16 is moved by operating the screw rod 14 and other linear drive mechanism with the handle 15 and the like, the two inner surface forming frames 6 rotatable about the center post 2 are provided.
Are rotated by the same angle by the pantograph mechanism formed by interposing the link 17, and the corner angle of the inner surface forming frame 6 is changed.

By using a boosting mechanism such as the screw rod 14 as the linear drive mechanism of the operation block 16, the angle can be easily and finely changed even with a large inner surface molding frame 6, and the corner of high precision can be obtained. The corner can be set.

In the mold of the present invention, the two inner surface molding frames 6 rotate about the center post 2 by the same angle, so that the symmetrical positional relationship between the two inner surface molding frames 6 with respect to the base 1 is maintained. The outer frame 7 does not move relative to the left and right, and the bottom frame 9 is provided between the inner frame 6 and the outer frame 7.
It is also possible to set the corner angles of the inner surface forming frame 6 and the outer surface forming frame 7 at the same time by loosely connecting the two with the through bolts 10 and the like interposing the above.

[0011]

EXAMPLE An example shown in the drawings will be described below. 1 to 4, 1 is a base of a mold, 2 is a center post of a partially cylindrical shape standing on the base 1, 3 is a top plate of the center post, and 4 is a direction perpendicular to the center of the center post 2. A erected pivot shaft, 5 is an arc-shaped rail centered on the pivot shaft 4 fixedly mounted on the base 1, 6 is an inner molding frame, 7 is an outer molding frame, and 8 is two outer moldings. A flexible connecting member for connecting the frames to each other, 9 is a bottom frame interposed between the inner surface molding frame 6 and the outer surface molding frame 7, and 10 is a bottom frame 9 that is the inner surface molding frame 6 and the outer surface molding frame 7. Through bolt for pinching and fixing between 1 and
Reference numeral 1 is a core rod for forming a drain hole.

Reference numeral 13 is a gate-shaped frame mounted on the base 1, 14 is a screw rod whose both ends are supported by the frame 13, 1
Reference numeral 5 is a handle attached to one end of the screw rod 14, 16 is an operating block screwed to the screw rod 14, and 17 is a link connecting the operating block 16 and an intermediate portion of the inner surface molding frame 6. The screw rod 14 is arranged at the position of the symmetry axis of the two inner surface forming frames 6 toward the pivot shaft 4 of the center post, and the height of the screw rod 14 and the link 17 is the same as the height of the inner surface forming frame 6. It is arranged so that it is almost in the center.

As shown in FIG. 5, the partially cylindrical center post 2 has an opening 19 that opens inward.
A pivot bracket 20 bent at the inner end is fixed to the inner surface molding frame 6, and this bracket 20 is used for opening 1
It is pivotally attached to the pivot shaft 4 through 9.

Inner surface forming frame 6, bottom frame 9 and outer surface forming frame 7
Rides on the rail 5, and there is a play between the upper surface of the base 1 and these frames 6, 9, 7. That is, the rail 5 slidably supports the inner molding frame 6, the bottom frame 9, and the outer molding frame 7.

On the inner side edge of the inner surface molding frame 6 on the molding surface side,
As shown in FIG. 5, a rubber packing 21 is provided in sliding contact with the outer peripheral surface of the center post 2 to prevent concrete from flowing between the center post 2 and the inner surface molding frame 6.

The corners of the two outer molding frames 7 can be changed by the flexibility of the connecting member 8 as shown in FIG. When changing the corner angle largely, the connecting member 8 is replaced. As shown in FIG. 7, the bottom frame 9 is formed of three parts, box-shaped parts 22 a and 22 b on both sides sandwiched between the inner molding frame 6 and the outer molding frame 7, and a central part 23. , By exchanging the central portion 23, it is possible to cope with a change in the corner angle. The height and wall thickness of the molded block can be changed by changing the bottom frame 9 to have different heights and widths.

Both ends of the screw rod 14 are rotatably supported by the support frame 13 and extend in a direction that bisects the corner angle of the two inner surface forming frames 6 and is screwed to the screw rod 14. The operating block 16 has a bracket 27 on both sides. The inner surface molding frame 6 has a reinforcing girder 28 extending in the up-and-down direction at a substantially central portion of its left and right width.
8, a bracket 29 is provided, and this bracket and the bracket 27 of the operating block are connected by a link 17. Connecting link 17 and brackets 27 and 29
Are connected via vertical pins 30a and 30b, and the connection link 17 and the brackets 27 and 29 are connected to each other.
And are relatively rotatable around the pins 30a and 30b.

The number of links connecting the operating block 16 and the inner surface molding frame 6 is not necessarily one, and as shown in FIG. 8, a bracket 29 provided at the tip of the support frame.
The bracket 27 provided on the operation block 16 is pivotally connected to each other by two links 17a and 17b to form a pantograph mechanism.
It is possible to adopt a structure in which 1 and the inner surface molding frame 6 are connected by a link 17c. By adopting such a link structure, the angle can be changed, for example, when the change range of the corner angle is very large. In some cases, the operation can be performed more smoothly.

In the formwork of this embodiment described above, the operation block 16 is rotated by rotating the handle 15.
Moves back and forth along the screw rod 14, and this forward / backward movement is transmitted to the inner surface forming frame 6 pivotally attached to the pivot shaft 4 of the center post, and the corner angle α of the inner surface forming frame 6 is changed.
After the inner forming frame 6 is set at a desired angle, the outer forming frame 7 is fastened with the through bolts 10 with the bottom frame 9 interposed therebetween.
The angle of the outer surface molding frame 7 is also automatically set.

After the angles of the inner surface molding frame 6 and the outer surface molding frame 7 are set in this manner, the lower sides of the inner surface molding frame 6 and the outer surface molding frame 7 are attached to the base 1 by using a holding metal fitting 32 as shown in FIG. Then, the corner blocks of the retaining wall are molded by fixing the edge plates to both ends. The additional portion of the L-shaped retaining wall may be formed by a structure similar to that described in Japanese Utility Model Laid-Open No. 63-3406.

[0021]

According to the formwork of the present invention described above,
Even with a large mold, the corner angles of the inner and outer molding frames can be set easily and with high accuracy, and the large-sized retaining wall block with higher accuracy can be more efficiently used. We can meet the demand for production.

[Brief description of drawings]

FIG. 1 is a plan view showing a structure of a main part of a mold of the present invention.

FIG. 2 is a side view of the mold with the corner angle adjusting mechanism omitted.

FIG. 3 is an elevation view of the connecting portion between the center post and the inner molding frame as seen from the inside.

FIG. 4 is a side view of a screw rod and its supporting frame.

FIG. 5 is an enlarged cross-sectional view of a main part of part A in FIG.

FIG. 6 is an enlarged plan view of the connecting member of the outer molding frame.

FIG. 7 is a plan view of the height adjustment frame.

FIG. 8 is a plan view showing another example of the corner angle adjusting mechanism.

FIG. 9 is an explanatory diagram showing the relationship between the change in corner angle and the width of cavities.

FIG. 10 is a perspective view of a holding metal fitting.

[Explanation of symbols]

 1 base 2 center post 6 inner forming frame 14 screw rod 16 operating block 17 link

Claims (1)

[Scope of utility model registration request] 1. A center post (2) installed upright on a base (1).
In a corner block forming mold having a structure in which two inner surface forming frames (6) are rotatably connected to each other, in a direction that bisects the apex angle of the two inner surface forming frames (6). An actuating block (16) that reciprocates linearly and a drive mechanism (14) for the actuating block (16) are provided, and links of equal length (17) that connect the actuating block (16) and the respective intermediate portions of the two inner surface forming frames (6) ) For forming a corner block of a retaining wall.