JP3316612B2 - Method and apparatus for forming a pattern in front of L-shaped concrete block for retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for decorating a front surface of an L-type concrete block used for constructing a retaining wall for earth retaining or the like in land development or the like.

[0002]

2. Description of the Related Art A generally known L-shaped concrete block for a retaining wall (hereinafter simply referred to as a retaining wall block).
Is a retaining wall plate that is installed vertically on a foundation, a bottom plate that projects 90 degrees or 110 degrees from the lower edge of the retaining wall plate at right angles or obliquely downward, and straddles between the bottom plate and the retaining wall plate. The reinforcement ribs are provided with reinforcing ribs provided. Recently, decoration such as a pattern is performed on the front surface. The main method of construction is to perform the construction work for the retaining wall as a separate construction work after the construction work is completed.

[0003]

Therefore, the conventional construction method requires a great deal of labor and time, is inefficient, and the cost is increased accordingly.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is characterized in that a decoration such as a pattern is preliminarily applied to the front of the retaining wall plate at the same time as the production of the retaining wall block. . That is, using a method of manufacturing a retaining wall block in an inverted state, first, after injecting ready-mixed concrete into a mold for manufacturing a block main body, a mold device for forming a separately prepared pattern is used as a retaining wall plate for all the forms. Part, and apply viscous concrete to it to form a rough pattern while applying vibration.After processing with water or sand blast to finish the required pattern, heat curing and finally remove the mold device And a process for forming a pattern on the front surface of the L-shaped concrete block for retaining wall . here,
Embedding natural stones in the parts that will become the pattern, or mixing natural stone powder during the sandblasting process to color the pattern is a way to obtain a sense of quality, and in the latter case, mold and other stains It is also desirable to prevent.

[0005] A pattern forming device is provided with a pattern frame plate having a pattern pattern in which the walls are connected in the shape of a pattern at the center, a peripheral frame placed under the pattern frame via a space, and a pattern frame plate between the two. more it is configured with the lifting mechanism for pattern frame plate demolding. The lifting mechanism is provided with screw members in opposite directions on the left and right halves of a transmission shaft supported through two sliding pieces sandwiching the bearing member fixed on each side of the peripheral frame. engaging each part into the internal thread of the through hole of the sliding piece, and one that coupled to the operating member which is fixed to both sliding pieces on the periphery backside of Sozo Re said pattern frame plate, one of the driving shaft (4
A handle wheel (45) is attached to the extension end of 2), and adjacent transmission shafts are connected to each intersection of the rectangular transmission shafts (42) via bevel gears (44). The rotation of (45) is simultaneously transmitted to each transmission shaft (42).

[0006]

Embodiments of the present invention will be described below with reference to the drawings. First, as shown in FIG. 6, a retaining wall block 10 to which the present invention is applied has a substantially rectangular retaining wall plate 11 which is vertically installed on a concrete foundation, and which is 90 degrees or less from the lower edge of the retaining wall plate. This is an L-shaped concrete block for a retaining wall containing a reinforcing bar, which is integrally provided with a bottom plate 12 projecting obliquely downward at an angle of 110 degrees, and a reinforcing rib 13 laid over the inner surface of the retaining wall plate 1. However, the procedure of the present invention, which is characterized by the method of forming a pattern on the front surface, is as follows.

More specifically, the present invention employs a method of manufacturing the block in a state where the front surface of the retaining wall plate 11 is turned upside down as shown in FIG. 1 (a). Thus, the ready-mixed concrete C is poured into the formwork 20 for manufacturing the main body of the retaining wall block. (2) Next, as shown in FIG. 4B, a separately prepared pattern forming mold device 30 is placed on the retaining wall plate portion 21 of the entire formwork 20, and the fresh concrete C To create the outline of the pattern. (3) Subsequently, excess portions are cut off by washing with water or a sandblasting machine, and as shown in FIG. 3 (c), irregularities dd 'are freely formed and finished to a required pattern. (4) This is heated and cured for an appropriate period of time, and finally, the mold device 30 is removed as shown in FIG.

The present invention comprises the above steps.
In the step (2) of injecting ready-mixed concrete while applying vibration to the pattern forming mold device 30, embedding natural stones 40 in a portion to be a pattern can give a higher quality feeling.
In addition, when natural stone powder is mixed into the sand to be blown at the stage of the sand blasting in the step (3), the surface is colored, there is no discoloration, and the surface can be worked so as not to attract mold and the like.

Next, the structure of a pattern forming mold device 30 that is removably superimposed on the retaining wall plate portion 21 of the mold frame 20 will be described. That is, as shown in a plan view in FIG. 2, the mold device 30 is configured by a rectangular pattern frame plate 31 and a peripheral frame 34 corresponding to the periphery 33 thereof and slightly below and overlapped below. The pattern frame plate 31 is made of resin-processed iron or aluminum in the center surrounded by the periphery 33,
As shown in FIG. 2A, a pattern mold 32 including walls connected in a pattern when viewed from above is provided. Further, the frame plate lifting / lowering mechanism 40 for removing the pattern frame plate 31 in the final step is disposed between each periphery 33 of the pattern frame plate 31 and the peripheral frame 34.

In the lifting mechanism 40, a transmission shaft 42 is supported by passing through a support member 41 fixed on each side of the peripheral frame 34, and the transmission shaft has left and right half portions each having a screw portion in the opposite direction. 43, 43 'are provided, and the threaded portions respectively mesh with female screws provided in through holes of two sliding pieces 44, 44' arranged on the peripheral frame 34, and the sliding pieces 44, 43 '
The reference numerals 44 ′ are connected via a connecting rod 36 to an operation piece 35 fixed to the center of the back surface of the periphery 33 of the pattern frame plate 31. Therefore, the rotation of the transmission shaft 42 causes the two sliding pieces 4
4, 44 'move toward and away from each other, and accordingly, the connecting rod 36 rises or lays down to raise or lower the pattern frame plate 31, as shown in FIG.

Here, as shown in FIG. 2 (a), each intersection of the transmission shaft 42 arranged in a rectangular shape is
Adjacent power transmission shafts are connected to each other via the transmission wheel 4, and a handle wheel 45 is attached to the extension end of one of the power transmission shafts 42. When the pattern frame plate 31 is moved up and down, the torque of the handle wheel 45 is reduced. The lifting mechanism 40 is simultaneously transmitted to the transmission shafts 42 and operates smoothly.

[0012]

As described above, the present invention is characterized in that a decoration such as a pattern is preliminarily applied to the front surface of the retaining wall block at the same time as the manufacture thereof. It saves labor and time and improves efficiency compared to the law, and greatly contributes to cost reduction. Further, the present invention provides a method of manufacturing a retaining wall block in an inverted state, using a mold device for forming a pattern on a mold of a retaining wall block main body, and performing sandblasting.
Since it is finished by heating and curing, the front surface of the retaining wall block which can be easily seen can be made to have a very high-grade appearance. In addition, since the mold device injects ready-mixed concrete in the vertical direction, it is relatively easy to adjust the injection amount and arrangement.

[Brief description of the drawings]

FIG. 1 shows a procedure for forming a pattern on a retaining wall block by the method of the present invention.

2A is a plan view of a mold device used in the method of the present invention, and FIG. 2B is a perspective view of a pattern of the mold device.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a front view of a mold device.

FIG. 5 is an operation diagram of a lifting mechanism.

FIG. 6 is a perspective view of a retaining wall block to which the present invention is applied.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Retaining wall block (L-type concrete block for retaining wall) 20 ... Form body for main body 30 ... Mold device for pattern formation 31 ... Pattern frame plate 32 ... Pattern mold 34 ... Peripheral frame 40 ... … Pattern frame plate elevating mechanism 42 …… Transmission shaft 44 …… Bevel gear 50 …… Natural stone

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-4-85457 (JP, A) JP-A-4-269509 (JP, A) JP-A-7-16811 (JP, A) JP-A-49-49 8513 (JP, A) JP-A-7-137012 (JP, A) JP-A-60-27506 (JP, A) Registered utility model 3021661 (JP, U) (58) Fields studied (Int. Cl. ⁷ , (DB name) E02D 29/02 B28B 7/10 B28B 3/02 B28B 11/08

Claims (6)

(57) [Claims] 1. A vertical rectangular retaining wall plate, and a bottom plate extending at a right angle or obliquely downward from a lower edge of the retaining wall plate,
An L-type concrete block for a retaining wall containing a reinforcing bar, comprising a reinforcing rib provided between the bottom plate and the retaining wall plate (1).
In the method of manufacturing the above (0) in an inverted state in which the front surface of the retaining wall plate faces upward, first, the ready-mixed concrete is poured into the mold body (20) for the block body, and then a mold device for forming a separately prepared pattern ( 30) to the retaining wall plate (21) of the formwork (20)
Then, while adding vibration, apply ready-mixed concrete to form a rough pattern, then process it with water or sand blast to finish it to the required pattern, heat cure, and finally mold A method for forming a pattern on the front surface of an L-shaped concrete block for a retaining wall, comprising the steps of removing an apparatus (30). 2. The retaining wall L according to claim 1, wherein natural stone (50) is buried in a portion to be patterned when the ready-mixed concrete is poured while applying vibration to the mold device (30). A method of forming a pattern on the front of a mold concrete block. 3. The L-shaped concrete block for retaining walls according to claim 1, wherein, at the stage of sandblasting, natural stone powder is mixed to color the pattern and prevent stains such as mold. How to form. 4. A rectangular retaining wall plate, a bottom plate extending perpendicularly or obliquely downward from a lower edge of the retaining wall plate, and a reinforcing rib provided between the bottom plate and the retaining wall plate. When manufacturing an L-shaped concrete block for a retaining wall with a reinforcing bar with an inverted face with the front of the retaining wall plate facing upward, remove it from the upper surface of the retaining wall plate portion of the formwork for producing the block body. A mold device (3) that freely overlaps and forms a pattern on the front of a concrete block.
0), a rectangular pattern frame plate (31) having, at the center, a pattern pattern (32) in which hanging walls are connected in a pattern when viewed from above, and a peripheral portion (33) of the pattern frame plate. Characterized in that it comprises a peripheral frame (34), which is placed below via a space corresponding to (3), and a raising / lowering mechanism (40) for a pattern frame plate disposed between the two. A mold device that forms patterns on the surface. 5. An elevating mechanism for removing a pattern frame plate,
A transmission shaft (42) is supported by penetrating a support member (41) fixed on each side of the peripheral frame (34), and screw portions (43), (43), ( 43 '), and the sliding pieces (44), (4) in which the screw portions are arranged on the peripheral frame.
4 ') The function of engaging with the female screw provided in the through hole and fixing the sliding pieces (44) and (44') to the center of the back surface of the peripheral portion (33) of the pattern frame plate (31). The mold device for forming a pattern on the front surface of an L-shaped concrete block for a retaining wall according to claim 4, wherein the pattern is connected to the piece (35) via a connecting rod (36). 6. A handle wheel (45) is attached to an extension end of one transmission shaft (42), and adjacent to each intersection of the transmission shafts (42) arranged in a rectangular shape via bevel gears (44). Drive shafts (45)
The mold device for forming a pattern on the front surface of an L-shaped concrete block for a retaining wall according to claim 4, wherein the rotation of the block is simultaneously transmitted to each transmission shaft (42).