JP3386772B2 - L-shaped block formwork - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an L-shaped block mold for manufacturing an L-shaped concrete block mainly used as a retaining wall in an upside down state.

[0002]

2. Description of the Related Art As shown in FIG. 10, an L-shaped block mainly used for a retaining wall has a side plate formed by a wall plate portion 26 and a bottom plate portion 27 in a substantially L shape. In such an L-shaped block 25, the required height of the wall plate portion 26 differs depending on the place of construction. That is, when it is used as a relatively low retaining wall, a short one as shown by a chain line A is required, and when it is used on a sloping ground, an L-shaped block whose upper part is slanted as shown by a chain line B is required. It However, it is difficult to make all of these many types of molds separately, so a simple modification is made to one type of mold to produce short blocks or blocks with an oblique upper part. .

FIG. 11 is an exploded perspective view of a conventional mold 31, and FIG. 12 is an exploded perspective view of a modified form 31. The mold frame 31 is formed by vertically inverting the L-shaped block, and includes a main frame 32, a front frame 33, a back frame 34, side frames 35, a bottom frame 36, a base 37, a reinforcing column 38, and the like. The main frame 32 is formed by processing an iron plate, and has a side surface of a substantially inverted L shape, and is fixed to the base 37 and the reinforcing column 38. The front frame 33 is erected on the front side of the main frame 32 at a predetermined interval from the front frame 33, closes the front side of the main frame 32, and is attached to the stand 37 so as to be close to and away from it. The back frame 34 is erected at the rear end of the main frame 32 and closes the back side of the main frame 32. Left and right side frames 35, 35 are main frames 3
It is provided upright at the end portions of the left and right side surfaces of the main frame 32 and closes the left and right side surfaces of the main frame 32. The bottom frame 36 is horizontally provided between the main frame 32 and the lower portion of the front frame 33 to close the bottom, and is fixed to the base 37 and the main frame 32.

In the formwork 31, the main frame 32 causes the rear surface of the wall plate portion 26 and the upper surface of the bottom plate portion 27 of the L-shaped block to
The front frame 33 serves as a front surface of the wall plate portion 26, the back frame portion 34 serves as a back surface of the bottom plate portion 27, and the side frame portion 35 serves as a side plate portion 26.
The side surfaces of the bottom plate portion 27 and the bottom plate portion 27 are covered by the bottom frame 36.
The upper surface of each is molded.

Main frame 32, front frame 33, back frame 34, side frame 3
The space surrounded by 5 and the bottom frame 36 is a cavity, and after filling the cavity with concrete from above and curing and hardening the concrete, the front frame 33 is pulled out to separate the left and right side frames 35. The mold is rotated to open the mold, and the molded L-shaped block is taken out.

FIG. 12 shows a modification of the form 31 to form an L-shaped block having a lower wall plate and an inclined upper portion. In such a case, the bottom frame 3
An auxiliary bottom frame 39 is attached on top of 6. Reference numeral 40 is a reinforcing material. If the auxiliary bottom frame 39 is attached obliquely, a block having an oblique upper portion can be manufactured. Such an auxiliary bottom frame 3
9 and the reinforcing material 40 are generally fixed to the bottom frame 36 and the main frame 32 by welding or the like.

[0007]

Since the conventional formwork has to be modified so as to attach the auxiliary bottom frame and the reinforcing material each time blocks having different heights are manufactured, it takes time and cost each time. Was there. In addition, since the auxiliary bottom frame and the reinforcing material that have been once installed must be removed, it is not only complicated, but the mold body is damaged by repeated welding and detachment by removing it from the mold body. There was a problem that it deteriorated and durability was lowered.

The present invention has been made in order to provide a mold which can easily manufacture an L-shaped block having a low wall plate portion and an inclined upper portion.

[0009]

DISCLOSURE OF THE INVENTION The present invention is directed to a main frame 2 having a substantially inverted L-shaped side surface, and a front frame which is erected on the front side of the main frame 2 at a predetermined interval and closes the front side. 3 and a back frame 4 standing upright on the back end of the main frame 2 to close the back side,
It has side frames 5 and 5 which are erected on the left and right side surfaces of the main frame 2 and close the left and right side surfaces, and a bottom frame 6 which is horizontally provided between the main frame 2 and the lower part of the front frame 3 and closes the bottom portion, In the L-shaped block mold, in which the cavity surrounded by these frames is filled with concrete, and the L-shaped block is molded in the upside-down state, the bottom frame 6 moves up and down between the main frame 2 and the front frame 3. The left and right side frames 5 and 5 can be freely opened and closed by means of a means.
In addition, its front end has the same width as the bottom frame 6.
It becomes a sliding part 7 that is vertically divided and can slide vertically.
The lower end of the sliding portion 7 contacts the upper surface of the end portion of the bottom frame 6.
And a mold of L-shaped block slide 7 is characterized that you slide up and down in response to vertical movement of the bottom frame.

In the present invention, the bottom frame can move up and down between the main frame and the front frame. Since the bottom frame forms the upper surface of the wall plate portion of the L-shaped block, it is possible to form a short L-shaped block by raising the bottom frame and a tall block by lowering it.

The front end portions of the left and right side frames are vertically separated by the same width as the bottom frame to form a sliding portion that slides in the vertical direction, and the lower end of the sliding portion contacts the upper surface of the end portion of the bottom frame. The sliding portion can be configured to slide up and down as the bottom frame moves up and down.
With this configuration, both ends of the bottom frame can be projected to the outside of the sliding portion, so that the bottom frame can be tilted. By inclining the bottom frame, it is possible to mold an L-shaped block whose upper portion is formed obliquely.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the drawings showing the embodiments. 1 is a plan view of the mold 1 of the L-shaped block of the embodiment, FIG. 2 is a plan view of the mold 1 in a mold open state, FIG. 3 is a sectional view taken along the line AA of FIG. 1, and FIG. 4 is an exploded view of the mold 1. 5 and 6 are front views showing the mold 1 without the front frame. FIG. 5 is a state in which the bottom frame 6 is lowered, FIG. 6 is in a raised / inclined state, and FIGS. FIG. 7 is a side view of the mold 1, FIG. 8 is a side view (left side) and a rear view (right side) of the sliding portion 7, and FIG. In these drawings, the reinforcing member and the fastening member of the mold are almost omitted.

The mold 1 is formed by turning the L-shaped block upside down, and includes a main frame 2, a front frame 3, a back frame 4, left and right side frames 5, 5, a bottom frame 6, a base 11, and a reinforcement. It consists of pillars 12 and the like. The main frame 2 is formed by processing an iron plate, has a side surface of a substantially inverted L shape, and is welded and fixed to the base 11 and the reinforcing column 12. The front frame 3 is erected on the front side of the main frame 2 with a predetermined space therebetween, and closes the front side of the main frame 2.
As shown by an arrow in FIG. 3, the base 11 is supported so as to be close to and away from the base 11. As shown in FIGS. 3 and 4, the front frame 3
A leg 10 having wheels 14 is provided at the bottom of the leg 10.
Is configured to move back and forth inside the guide (square pipe) 13 of the base 11. The back frame 4 is erected on the rear side end of the main frame 2 to close the back side. Left and right side frames 5, 5
Is erected on the left and right side surfaces of the main frame to close the left and right side surfaces, and is hinged to the reinforcing column 12 by a hinge 9 so that it can be opened and closed. The bottom frame 6 is horizontally provided between the lower parts of the main frame 2 and the front frame 3 to close the bottom part, and can be raised and lowered by an elevating means (jack) 15.

In the formwork 1, the main frame 2 forms the rear surface of the wall plate portion 26 and the upper surface of the bottom plate portion 27 of the L-shaped block, the front frame 3 forms the front surface of the wall plate portion 26, and the back frame 4 forms the bottom plate portion 27. The left and right side surfaces of the side plate portion 26 and the bottom plate portion 27 are formed by the left and right side frames 5, and the wall plate portion 26 is formed by the bottom frame 6.
The upper surface of each is molded.

The space surrounded by the main frame 2, the front frame 3, the back frame 4, the side frames 5, and the bottom frame 6 is a cavity, and the cavity is filled with concrete from above to cure and cure the concrete. After that, as shown in FIG. 2, the front frame 3 is pulled out and separated, the left and right side frames 5 are rotated to open the mold, and the molded L-shaped block is taken out.

The front end portions of the left and right side frames 5 have the same width as the bottom frame 6 and are vertically divided to form a sliding portion 7. The sliding portion 7 is vertically slidable with respect to the side frame 5. The front end of the side frame 5 is bent and formed as a sliding contact portion 5a, and a guide groove 16 is formed in the sliding contact portion 5a. Reference numeral 8 is a reinforcing plate that reinforces the sliding contact portion 5a. A sliding contact portion 7a is bent and formed on the sliding portion 7, and a plurality of engaging protrusions 17 are formed on the back surface of the sliding contact portion 7a as shown in FIG. Sliding contact part 5a of side frame 5 and sliding contact part 7 of sliding part 7
The engagement protrusion 17 is in sliding contact with the guide groove 16 by engaging with the guide groove 16. As a result, the sliding portion 7 slides in the vertical direction with respect to the side frame 5.

The lower ends of the left and right sliding parts 7, 7 are in contact with the upper surface of the end part of the bottom frame 5. Both ends of the bottom frame 5 project outward from the cavity surface of the sliding portion 7, as shown in FIGS. That is, the length of the bottom frame 6 is longer than the length of the L-shaped block. Therefore, the bottom frame can be tilted. The sliding portions 7 are placed on both ends of the bottom frame 6, and when the bottom frame 6 is moved up and down, the sliding portion 7 slides up and down correspondingly and moves up and down.

The bottom frame 6 is pivotally attached to the head of an ascending / descending means (jack) 15 fixed on the base 11 and is tiltable. Therefore, it is possible to ascend and descend to a desired position and tilt at a desired angle.

FIG. 5 shows the case where the bottom frame 6 is lowered most. In this case, the tallest L-shaped block can be molded.

FIG. 6 shows a case where the bottom frame 6 is raised by the elevating means and further tilted slightly. The left and right sliding parts 7, 7 are also raised corresponding to the rise of the bottom frame 6.
In this case, it is possible to mold an L-shaped block having an inclined upper portion as shown by a chain line B in FIG.

In the present invention, it is desirable that the sliding portion 7 also be provided with an elevating means. 7 to 9 show examples of lifting means for the sliding portion 7. As shown in FIG. 8, the rack gear 18 is attached to the engaging protrusion provided on the back surface of the sliding portion 7.
Is attached. In addition, as shown in FIGS.
A bolt 20 is axially mounted on the back surface of the side frame 5 by a bearing 22 and a ratchet 21. The pinion gear 19 attached to the tip of the bolt 20 engages with the rack gear attached to the back surface of the sliding portion 7, and the bolt 20 rotates to cause the sliding portion 7 to slide with respect to the side frame 5, Move up and down. The raised sliding portion 7 is fixed by the action of the ratchet 21.

The bottom frame 6 and the sliding portion 7 are lifted and lowered while the front frame 3 is open. When the setting of the bottom frame 6 and the sliding portion 7 is completed, the front frame 3 is closed and tightened (a tightening device is not shown) to be assembled, and the cavity is filled with concrete and hardened. After curing, as shown in FIG. 2, the front frame 3 is pulled out and separated from the main frame 2, the side frames 5 and 5 are rotated to open the mold, and the molded L-shaped block is taken out.

In this way, the bottom frame 6 can be moved up and down to a desired height, and can be tilted and fixed at a desired angle, so that the L-shaped block having a desired height and the upper part can have a desired angle. The L-shaped block inclined with can be easily molded.

[0024]

According to the L-shaped block form of the present invention, since the bottom frame can be moved up and down, the L-shaped block having an arbitrary height can be easily formed with high precision. Further, if the bottom frame is configured to be tiltable, an L-shaped block having an oblique upper portion can be easily formed. At that time, since there is no need to modify it by welding or the like, there is no problem that accuracy is deteriorated or durability is lost.

[Brief description of drawings]

FIG. 1 is a plan view of a form 1 of an L-shaped block according to an embodiment.

FIG. 2 is a plan view of a mold 1 in a mold open state.

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

FIG. 4 is an exploded perspective view of the formwork 1.

FIG. 5 is a front view showing the form 1 with the front frame removed.

FIG. 6 is a front view showing the form 1 with the front frame removed.

FIG. 7 is a side view of the formwork 1.

FIG. 8 is a side view (left side) and a rear view (right side) of the sliding portion 7.
Is.

FIG. 9 is a transverse sectional view of a sliding portion 7.

FIG. 10 is a perspective view of an L-shaped block 25.

FIG. 11 is an exploded perspective view of a conventional form 31.

FIG. 12 is an exploded perspective view of a modified formwork 31.

[Explanation of symbols]

1 formwork 2 main frames 3 front frame 4 back frame 5 side frames 6 bottom frame 7 Sliding part 8 Reinforcement plate 9 hinges 10 legs 11 units 12 reinforcement columns 13 Guide 14 wheels 15 Lifting means 16 guide groove 17 Engagement protrusion 18 rack gear 19 pinion gear 20 volts 21 ratchet 22 Bearing 25 L-shaped block 26 Wall board 27 Bottom plate 31 formwork 32 main frames 33 Front frame 34 Back frame 35 side frame 36 Bottom frame 37 units 38 Reinforcement pillar 39 Auxiliary bottom frame 40 Reinforcement material

Claims (3)

(57) [Claims] 1. A main frame whose side surface has a substantially inverted L shape.
( 2 ) , a front frame ( 3 ) standing upright on the front side of the main frame ( 2 ) at a predetermined interval to close the front side, and a backside standing upright on the rear end of the main frame ( 2 ). A back frame ( 4 ) that closes the side,
The main frame (2) side frame for closing the left and right sides are erected on the left and right sides of (5) (5), the bottom is provided horizontally between the front frame (3) lower the main frame (2) bottom frame for closing having a (6), filled with concrete into the cavity surrounded by these frames, the formwork L-shaped block for forming the L-shaped block in upside-down state, the bottom frame (6 ) Is the main frame
The space between ( 2 ) and the front frame ( 3 ) can be lifted and lowered by the lifting means, and the left and right side frames (5) and (5) can be freely opened and closed.
And its front end has the same width as the bottom frame (6).
Sliding part (7) divided vertically and slidable vertically
And the lower end of the sliding part (7) is the end of the bottom frame (6).
It contacts the upper surface, and the sliding part (7) moves up and down in response to the vertical movement of the bottom frame.
Formwork L-shaped block, characterized in sliding to Rukoto below 2. The formwork of claim 1 , wherein the bottom frame
L is characterized in that (6) is provided so as to be tiltable
Form block formwork 3. A formwork for an L-shaped block according to claim 1 or 2 , wherein an elevating mechanism for said sliding portion ( 7 ) is provided.