JPS6345289Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a formwork for manufacturing side gutter blocks, and more particularly to a formwork in which channel width, depth, top slope, cross-sectional shape, etc. can be freely selected.

(Prior art) Conventional formwork for manufacturing side gutter blocks requires formwork of the exact dimensions each time depending on the channel width, depth, etc.
Taking U-shaped gutters as an example, the most common products are small ones with a channel width of 30 cm and a depth of 30 cm, and large ones with a width and depth of about 150 cm. Due to the development and adverse conditions of various underground construction works such as electricity, gas, and water supply, there are many restrictions on the width of the ditch, and there is also a demand for deep channel products where the depth of the channel is larger than the width.
In order to meet the above conditions, products with different U-shaped gutter and top shapes, such as falling lid type, semi-dropping type, difference in thickness of left and right side walls, difference in height, and products with sloped top end, etc.
More than 100 types of formwork were required.

(Problems to be solved by the invention) As mentioned above, the need for a wide variety of formworks means that the formworks are heavy (several 100 kg to several tons), making it difficult and dangerous to move them. As a result, high-mix, low-volume production requires a large amount of capital investment, a decline in formwork turnover, and since the product is made of steel, there are problems with rust prevention (rust on the inside of the formwork will damage the beauty of the concrete product), and complicated inventory management. However, there were many drawbacks such as the need for a large space.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a formwork for manufacturing gutter blocks that can accommodate manufacturing conditions of various sizes and shapes by replacing several formworks and forming blocks. .

(Means for Solving the Problems) In order to achieve the above object, the present invention has two cores that are slidably erected and engaged with guide rails provided on the underframe. The end plate is hinged to the lower end, the side plate is hinged to the side plate shaft supporting member screwed to the side plate moving base via a wall thickness spacer, and the side plate base is slid to the outside of the core on the underframe. A top end that can be freely erected and has screw shafts that are screwed into the left screw portion and the right screw portion of the movable base on both sides supported by the ends of the underframe, and a lifting mechanism is provided on the outer bottom of both cores. The members are provided in a slidable manner, a waterway width adjusting plate is placed between the opposing upper surfaces of the core, both end plates are fixed via the end plate adjusting plate, and a gutter is installed in the concave portion provided on the inner surface of both side plates. It is characterized by being formed by fixing a plurality of molded blocks of arbitrary shapes to form the outer shape of the block.

(Function) According to the above configuration, by exchanging several molds and molding blocks, it is possible to meet the manufacturing conditions of gutter blocks of various sizes and shapes.

(Example) 1 in the figure is the guide rail provided on the upper part of the underframe 2,
Two cores 3, 3' are slidably engaged with the guide rail 1, and the distance between them is adjusted by sliding the cores 3, 3'. It is now possible to change the channel width of the gutter block. When the channel width is other than the minimum channel width, a channel width adjustment plate 3A is inserted and fixed in the upper part between the cores 3 and 3' to correspond to the required channel width. 4, 4' are a pair of end plates, and the lower ends of the end plates 4, 4' are butterfly plate parts 3a, 3a' provided at both lower ends (lower front and lower back in the figure) of the cores 3, 3'. It is hinged so that it can be opened and closed.
Each end plate 4, 4' is constructed by fixing an end plate adjusting plate 4A of an appropriate size between a pair of end plate constituent members and integrating the end plate constituent members. There is a lifting mechanism 1 on the L-shaped flat surface of the outer bottom of the cores 3 and 3'.
It is also possible to pivot the top member 3B through a 0 or raised block (stacked and fixed in several blocks) and differentially adjust the lifting mechanism 10 to give a slope to the top member 3B. Yes, a specially shaped molded block 12a is placed on top of the top member 3B to form the top (top) of the concrete product.
can also be changed in various ways.

Side plate bases 5, 5' are slidably inserted onto the guide rails 1 on the outside of the cores 3, 3', respectively, and the side plates are inserted into the side plate bases 5, 5' via wall thickness spacers 6, 6'. Screw the shaft support members 7, 7' with bolts 7a, 7'a, hinge the side plates 8, 8' to the shaft support members 7, 7',
A screw shaft 9 with a right-hand screw 9a and a left-hand screw 9b is screwed into the lower part of the side plate bases 5 and 5', and the end of the screw shaft 9 is rotatably supported on the underframe 2.

The side plates 8, 8' are provided with concave portions 11, 11', and a plurality of molded blocks 12a, 12b, 12c are inserted in combination into the concave portions 11, 11', and provided in the side plates 8, 8'. Through the insertion hole, the side plate 8,
8' from the outside to form a mold having the shape of the outer surface of the product U. Molded edge 8 at the top of the side plates 8, 8'
a and 8a' are for adjusting the bottom thickness and forming the shape of the product U, and if necessary, similar devices are placed on the upper surface of each end plate 4, 4' and the end plate adjusting plate 4A.

The cores 3, 3' and the waterway width adjusting plate 3A are
It has a mechanism that allows each to be moved inward to facilitate demolding. This will be explained in detail using FIGS. 4 and 5. That is, core 3, 3'
is hinged to the support part at the inner lower part, and is bridged by a turnbuckle 13 at the upper part on the inner end side in the longitudinal direction. Therefore, by rotating the turnbuckle 13 in a predetermined direction, the upper portions of the cores 3, 3' are inclined inwardly toward each other. Channel width adjustment plate 3
A is a hook 3 provided on one end side in the width direction.
A' is engaged with an engaging rod 3'a provided on the inner upper part of the core 3', and the other inclined end side is supported by a cam member 14 provided on the inner upper part of the core 3, that is, When the maximum radius side of the cam member 14 is moved upward, the other end side of the channel width adjusting plate 3A can be brought into close contact with the inner edge of the core 3, and the maximum radius side of the cam member 14 is moved upward. When moved to , the channel width adjusting plate 3A tilts downward as shown by the two-dot chain line.
3'b is a notch into which the shaft 14a of the cam member 14 is fitted when the cores 3, 3' are in the maximum approach state. Further, as a means for inwardly inclining the cores 3, 3', an elastic body may be provided at the lower part of the cores 3, 3' and bent.

Reference numeral 15 denotes a known tightening bolt mechanism for each end plate 4, 4', which is used to increase the rigidity of the formwork and maintain dimensional accuracy when the formwork is assembled. 1
6 is a mechanism for positioning the side plates 8, 8' with respect to the end plates 4, 4', and in order to determine the side wall thickness of the side gutter block to be manufactured, the core 3 is positioned in accordance with the thickness of the wall thickness spacers 6, 6'. , 3' and the side plates 8, 8'. As shown in FIG. 6, the positioning mechanism 16 is provided with a horizontally long rectangular through hole 4a in each end plate 4, 4', through which the positioning knob pin provided on the side plates 8, 8' passes, and a through hole 4a through which the positioning knob pin provided on the side plates 8, 8' passes. A horizontally long rectangular moving plate 1 having a central hole 16a for insertion, and horizontally long rectangular insertion holes 16c on both sides of which the tip of a bolt 16b is inserted.
6' is screwed into the screw hole 4b of each end plate 4, 4' via the bolt 16b. In addition, 16d is a protrusion provided on the inner surface side of the movable plate 16', 4c is each end plate 4,
A plurality of recesses provided on the opposing surface of the projection 16d
The moving position of the movable plate 16' is determined by fitting the movable plate 16' into one of the recesses 4c. Further, 17 is a known shock absorber.

In the formwork constructed as described above, the side plates 8, 8' are moved by the rotation of the screw shaft 9, and the core 3,
3' to adjust the channel width of the product U, and by moving the top member 3B by operating the lifting mechanism 10, the depth, top slope, etc. of the product U can be adjusted. The waterway width adjustment plate 3A and the end plate adjustment plate 4A are attached to form the block 12 into the desired shape.
a, 12b, 12c, etc. are fixed to the concave portions 11, 11', the end plates 4, 4' are closed to form a space for pouring concrete into the product U, and the tightening bolt mechanism 15 is further tightened to close the gutter. It is used as a formwork for. Also, after curing product U (for example, put it in a steam chamber at normal pressure at 60 to 70℃ for several hours to quickly develop the initial strength to take it out from the mold)
When demolding, first release the tightening bolt mechanism 15 of the end plates 4, 4', open the end plates 4, 4',
The side plates 8, 8' are opened on both sides, and the product U is adsorbed with a vacuum pad or the like and carried outside, completing one cycle of concrete pouring.

Figures 7a to 7f show some of the shapes of the side gutter U that can be manufactured with the present invention. a is a U-shaped gutter, b is a gutter with different sidewall heights, c is a gutter with a sloped top, d is a drop-top type gutter, e is a semi-drop-top type gutter, and f is a deep-water drop-cover type gutter.

(Effects) As explained above, according to the present invention, two cores are slidably erected and engaged with guide rails provided on the underframe, and end plates are hinged to both lower ends of the cores. The side plate is hinged to the side plate shaft supporting member screwed to the side plate movable base via a wall thickness spacer, and the side plate base is slidably erected on the outside of the core on the underframe. Screw shafts that are screwed into the left and right screw portions of the moving bases on both sides are pivotally supported by the ends of the underframe, and a top member with a lifting mechanism is provided on the outer bottom of both cores so as to be able to freely slide into contact with the screw shafts. , placing a channel width adjusting plate between the opposing top surfaces of the core, fixing both end plates through the end plate adjusting plate, and forming the outer shape of the gutter block in the recesses provided on the inner surfaces of the both side plates. Since it is made by fixing multiple molded blocks of arbitrary shapes, by adjusting the side plates, top end members, etc.
There is an advantage that a flexible formwork for a side gutter can be provided at a low cost, allowing the width, depth, top slope, cross-sectional shape, etc. of the channel to be freely selected.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway overall perspective view of the formwork according to the present invention, and FIG.
The figure is an exploded perspective view of the main part of the side plate moving mechanism, Fig. 3 is a partially omitted front view of the main part of the formwork, Fig. 4 is a partially omitted perspective view of the entire core, and Fig. 5 is a water channel. FIG. 6 is an exploded perspective view of the main parts of the positioning mechanism, and FIGS. 7a to 7f are explanatory views of the product. 1... Guide rail, 2... Underframe, 3, 3'... Core, 4, 4'... End plate, 8, 8'... Side plate.

Claims (1)

[Scope of utility model registration request] Two cores engaged with guide rails provided on the underframe are slidably installed, end plates are hinged to both lower ends of the cores, and screws are attached to the movable base of the side plates via wall thickness spacers. The side plate is hinged to the attached side plate shaft supporting member, the side plate base is slidably erected on the outside of the core on the underframe, and the left screw part and the right screw part of the both side plate movable base are A screw shaft to be screwed is supported at the end of the underframe, a top member with a lifting mechanism is provided on the outer bottom of both cores so as to be slidable therein, and a waterway width adjustment plate is provided between the opposing upper surfaces of the cores. A side gutter is constructed by placing a gutter, fixing both end plates through an end plate adjustment plate, and fixing a plurality of molded blocks of arbitrary shapes to form the outer shape of the gutter block in the recesses provided on the inner surfaces of the both side plates. Formwork for manufacturing blocks.