JP4609999B2 - Form for manufacturing canal block and method for manufacturing canal block - Google Patents

Description

  The present invention relates to a form for producing a canal block used in constructing a canal and a method for producing a canal block produced using the form.

A formwork for producing a waterway block having a waterway in the block and having a water passage hole leading to the waterway on the upper surface of the block is generally a frame, a bottom plate provided on the frame, and a frame A front end plate and a rear end plate that are provided to be freely opened and closed, a left side plate and a right side plate that are provided to be openable and closable on the underframe, and a core for forming a water flow channel sandwiched between the closed front end plate and the rear end plate, It further includes a mechanism capable of projecting so that the nest configured to be movable up and down can come into contact with the core through an opening formed in a portion facing the core of the bottom plate.
Registered Utility Model No. 2516970

  When the water guide groove for improving the drainage performance of the water channel block is formed on the upper surface of the block so as to communicate with the water hole, it is necessary to form the nest through water hole and the water guide groove at the same time. is there. However, when such an insert is used, an extremely large force is required when the insert is extracted from the channel block, and damage such as chipping or cracking is likely to be given to the channel block during extraction. Further, even if it is desired to change only the shape of the water passage hole or the water guide groove, it is necessary to replace the entire insert with another insert, which is disadvantageous in terms of cost.

  The present invention has been created in view of the above circumstances, and the object of the present invention is to form a water channel block manufacturing frame that can accurately form a desired number and shape of water passage holes and water guide grooves on the upper surface of the water channel block. And providing a method of manufacturing a water channel block.

  In order to achieve the above-mentioned object, a channel block manufacturing form according to the present invention includes a base frame, a bottom plate provided on the base frame, front and rear end plates provided on the base frame so as to be opened and closed, and a base frame. A mold for manufacturing a water channel block comprising a left side plate and a right side plate provided in a freely openable and closable manner, and a core for forming a water flow channel sandwiched between the closed front end plate and rear end plate. A plurality of openings formed at intervals in the front-rear direction at a portion facing the child can project in a non-contact manner from the core toward the core, and a water guide groove is formed on the upper surface of the water channel block in the protruding state. It can be installed in a state sandwiched between a bottom plate and a core between a plurality of water guide groove forming members to be obtained and an adjacent projecting water guide groove forming member, and in the installed state, water flows between the water guide grooves on the upper surface of the water channel block. A water passage hole forming member capable of forming a water hole leading to the road. And features.

  In addition, the water channel block manufacturing method of the present invention is provided with a frame, a bottom plate provided on the frame, front and rear plates provided openably on the frame, and openable on the frame. A method of manufacturing a water channel block using a mold having a left side plate and a right side plate, and a core for forming a flow channel sandwiched between the closed front and rear end plates, facing the core of the bottom plate A plurality of water guide groove forming members are projected from each of a plurality of openings formed at intervals in the front-rear direction toward the core without contacting the core, and between adjacent water guide groove forming members in a protruding state A water passage hole forming member is installed in a state sandwiched between the bottom plate and the core, and after closing the front plate, the rear plate, the left plate and the right plate, concrete is placed in the mold to form a water channel block And pull out each water guide groove forming member from the channel block to make it non-projecting. , After opening the rear end plate, the left side plate and the right side plate, take out the water channel block in which a plurality of water guide grooves are formed and embedded with the water passage hole forming member from the mold, and extract the water hole forming member from the taken out water channel block , That is the feature.

  According to the above-mentioned formwork and manufacturing method, the water guide groove forming member and the water passage hole forming member are separately formed by separately configuring the member forming the water guide groove and the member forming the water hole in the water channel block. Therefore, when pulling out the water guide groove forming member from the water channel block and when pulling out the water passage hole forming member from the water channel block, it does not require a large force, and chipping or cracking etc. at each extraction It is difficult to damage the waterway block.

  In addition, since the water guide groove forming member and the water passage hole forming member are configured separately, the water guide groove forming member is changed to one having a different height dimension, or the projection amount is changed to the water channel block. The depth of the formed water guide groove can be easily changed, and the width dimension of the water passage hole formed in the water channel block can be easily changed by changing the water passage hole forming member to another shape.

  According to the present invention, it is possible to provide a water channel block manufacturing form and a water channel block manufacturing method capable of forming a desired number and shape of water passage holes and water guide grooves on the upper surface of the water channel block.

  The above object and other objects, structural features, and operational effects of the present invention will become apparent from the following description and the accompanying drawings.

[First Embodiment]
1 to 12 show a first embodiment of the present invention.

  First, with reference to FIG.1 and FIG.2, the shape of the water channel block C1 manufactured with the following formwork 10 is demonstrated.

  The water channel block C1 is used when constructing a water channel, and has a rectangular parallelepiped shape as a whole and has a flow channel C1a having a substantially rectangular cross section along the front-rear direction. Further, the upper surface C1b of the water channel block C1 has a V-shaped cross section inclined downward toward the center in the width direction. Furthermore, four water guide grooves C1c are provided at the center in the width direction of the upper surface C1b of the water channel block C1 with a space in the front-rear direction, and between the adjacent water guide grooves C1c, the water flow holes C1d leading to the water flow channel C1a are provided. There are a total of three.

  The depth of each water guide groove C1c is about ½ or less of the thickness of the top plate portion of the water channel block C1, and has a cross-sectional shape in which the lateral width gradually decreases from top to bottom. Each water passage hole C1d has a cross-sectional shape in which the lateral width gradually increases from top to bottom, and the lateral width of the upper end coincides with the lateral width of the upper end of the water guide groove C1c.

  Next, the configuration of the mold 10 for manufacturing the water channel block C1 will be described with reference to FIGS.

  The mold 10 includes a frame 11 having a rectangular top surface, a bottom plate 13 having a rectangular top surface provided on the frame 11 via a support frame 12, and a pivotal support ( A rear end plate 14 that can be opened and closed via a shaft (not shown), a front end plate 15 that can be opened and closed via a shaft support (not shown) at the front end of the frame 11, and a shaft at the left end of the frame 11 A left side plate 16 provided openably and closably via a support (not shown) and a right side plate 17 provided openably and closably via a shaft support (not shown) at the right end of the frame 11 are provided.

  The bottom plate 13 has an inverted V-shaped cross section inclined upward toward the center in the width direction, and four rectangular openings 13a are provided at the center in the width direction of the bottom plate 13 at intervals in the front-rear direction. The rear end plate 14 is configured to be openable and closable. However, the rear end plate 14 does not necessarily need to be opened in the course of manufacturing the water channel block, and may be fixed to the frame 11 with an appropriate fixing device so as not to be opened and closed.

  In addition, the rear end of the core support beam 18 is fixed to the rear end plate 14, and the core 19 for forming the flow channel C 1 a is attached to the core support beam 18. As shown in FIG. 7, the core 19 has a substantially C-shaped cross section having a separation portion on the side surface. The core 19 is attached to the core support beam 18 and is operated in a steady state ( 7 (B)) can be changed to a reduced form (see FIG. 7 (A)), and vice versa. In addition, although what has the isolation | separation location in the side surface was shown as the core 19 in drawing, you may use what has the isolation | separation location in the bottom as the core 19.

  Further, a support table 20 that is long in the front-rear direction is disposed below the bottom plate 13, and four water guide groove forming members 21 are formed on the upper surface of the support table 20 at intervals corresponding to the openings 13 a of the bottom plate 13. Is provided. Each water guide groove forming member 21 has a cross-sectional shape in which the lateral width gradually increases from top to bottom. The support base 20 can be moved up and down by operating a lifting mechanism (not shown) using a V-shaped link or the like, and when it is lifted, each water guide groove forming member 21 is moved from each opening 13 a of the bottom plate 13 toward the bottom surface of the core 19. It can project without contact with the core 19, and when descending, each water guide groove forming member 21 can be drawn below the upper surface of the bottom plate 13 through each opening 13 a of the bottom plate 13 to be in a non-projecting state. it can.

  Reference numeral 22 denotes a total of three water hole forming members, each of the water hole forming members 22 has a cross-sectional shape in which the left and right widths gradually decrease from top to bottom, and the front and rear lengths thereof are water guide grooves. This coincides with the distance between the front and rear of the forming member 21. Moreover, the left-right width of the lower end of each water flow hole formation member 22 corresponds with the left-right width of the lower end of the protrusion part of each water guide groove formation member 21 in a protrusion state. Further, the bottom surface of each water passage hole forming member 22 has an inverted V-shaped cross section aligned with the center of the top surface of the bottom plate 13 in the width direction.

  Next, a method for manufacturing the water channel block C1 using the mold 10 will be described with reference to FIGS.

  In manufacturing, as shown in FIG. 7A, the support base 20 is raised by operating the lifting mechanism with the core 19 in the contracted form, and the four water guide groove forming members 21 are attached to the bottom plate 13. It protrudes from the opening 13a toward the bottom surface of the core 19 without contact with the core 19. Subsequently, the water passage hole forming member 22 is inserted into the gap between the bottom plate 13 and the core 19 from either the left or right direction, and the water hole forming member 22 is inserted between the adjacent protruding water guide groove forming members 21. . Of course, after inserting the water passage hole forming member 22 at a predetermined position on the upper surface of the bottom plate 13, the four water guide groove forming members 21 are not connected to the core 19 from the openings 13 a of the bottom plate 13 toward the bottom surface of the core 19. Even if it makes it protrude by contact, it is possible to make it the state which inserted the water flow hole formation member 22 between the adjacent water conveyance groove formation members 21 of the protrusion state.

  The water guide groove forming member 21 existing before and after the inserted water passage hole forming member 22 plays a role of determining the position of the water hole forming member 22 in the front and rear direction. Moreover, since the bottom surface of each water flow hole forming member 22 has an inverted V-shaped cross section aligned with the center of the top surface of the bottom plate 13 in the width direction, each water flow hole forming member 22 is aligned with each other by passing the reverse V-shaped surfaces. Positioning of the hole forming member 22 in the left-right direction is performed.

  Then, as shown in FIG. 7B, the core expansion / contraction mechanism is operated to return the core 19 in the contracted form to the steady form. At this time, the upper surface of each water passage hole forming member 22 is pushed downward by the bottom surface of the core 19, and as a result, each water hole forming member 22 has a bottom plate between adjacent water guide groove forming members 21. 13 and the core 19 are installed.

  The installation of each water passage hole forming member 22 can also be performed after the core 19 in the reduced form is returned to the steady form. In this case, as shown in FIG. 8, the water passage hole forming member 22 may be pushed into each gap between the bottom plate 13 and the core 19 existing between the protruding water guide groove forming members 21.

  Since the form of the mold 10 after installing each water passage forming member 22 is as shown in FIG. 3, the front end plate 15, the left side plate 16 and the right side plate 17 are closed in the same form, and a mold clamping mechanism (not shown) is provided. The mold is clamped by operation, and then concrete is placed in the mold 10 to form a desired water channel block.

  After forming the block, the support mechanism 20 is lowered by operating the lifting mechanism, and the four water guide groove forming members 21 are extracted from the water channel block C1 and below the upper surface of the bottom plate 13 through the openings 13a of the bottom plate 13. Pull in to make it non-projecting. Then, by operating the core expansion / contraction mechanism, the core 19 in the steady state is reduced, the front end plate 15, the left side plate 16, and the right side plate 17 are opened, and then the water channel block C1 is pulled out from the core 19. Remove from mold 10. Since the water passage hole forming member 22 remains embedded in the water channel block C2, the water hole forming member 22 is taken out of the mold 10 together with the water channel block C2.

  Then, as shown in FIG. 9, each water hole forming member 22 is pressed inward from the outside of the taken out water channel block C1, and each water hole forming member 22 is extracted from the water channel block C1. Thus, the water channel block C1 shown in FIG. 1 is manufactured.

  Thus, according to the above-mentioned formwork and manufacturing method, the water guide groove formation is achieved by separating the member 21 forming the water guide groove C1c and the member 22 forming the water passage C1d in the water channel block C1. Since the member 21 and the water passage hole forming member 22 can be separately extracted from the water channel block C1, when the water guide groove forming member 21 is extracted from the water channel block C1 and when the water hole forming member 22 is extracted from the water channel block C1, it is not so much. A large force is not required, and damage such as chipping or cracking is difficult to be given to the water channel block C1 at the time of each extraction.

  Further, since the water guide groove forming member 21 and the water passage hole forming member 22 are configured separately, the water guide groove forming member 21 is changed to one having a different height or the vertical movement amount of the lifting mechanism is changed. The depth of the water guide groove C1c formed in the water channel block C1 can be easily changed by adjusting and changing the protruding amount of the water guide groove forming member 21, and the water passage hole forming member 22 is changed to another shape. Thus, the width dimension and the like of the water passage hole C1d formed in the water channel block C1 can be easily changed.

  Furthermore, since the water passage hole forming member 22 installed between the adjacent projecting water guide groove forming members 21 is sandwiched between the bottom plate 13 and the core 19, the water hole forming member 22 after installation is provided. Thus, it is possible to prevent the water passage hole forming member 22 from being displaced due to vibration, impact, or the like when placing concrete in the mold 10.

  In the above-described embodiment, the positioning in the left-right direction when installing each water hole forming member 22 is performed by using the bottom surface of each water hole forming member 22 having an inverted V shape on the upper surface of the bottom plate 13 having the same shape. However, as shown in FIG. 10, preferably two or more protrusions 13b are formed at the center of the upper surface of the bottom plate 13 and are fitted into the protrusions 13b. If the recesses 22b that can be combined are formed on the bottom surface of each water hole forming member 22, the recesses 22b on the bottom surface of each water hole forming member 22 are fitted to the protrusions 13b on the top surface of the bottom plate 13, thereby allowing each through hole to pass. Positioning in the left-right direction when installing the water hole forming member 22 can be performed more accurately. Of course, even if a convex portion is formed on the bottom surface side of each water passage hole forming member 22 and a concave portion that can be fitted to the convex portion is formed on the upper surface side of the bottom plate 13, the same positioning action can be achieved by fitting both the concave and convex portions. Can be obtained.

  Although not shown in the drawings, a rectangular shallow groove that can be fitted into the bottom of each water hole forming member 22 is formed at a position where each water hole forming member 22 is installed on the upper surface of the bottom plate 13. The same positioning effect can be obtained by fitting the bottom of the water passage hole forming member 22 into the shallow groove.

  Further, as shown in FIG. 11, one water guide groove forming member 21 ′ long in the front-rear direction is formed on the upper surface of the support base 20, and an opening 13 a ′ corresponding to the water guide groove forming member 21 ′ is formed in the bottom plate 13. At the same time, a groove portion 22c into which the water guide groove forming member 21 ′ can be directly fitted is formed on the bottom surface of each water passage hole forming member 22, and the water guide groove forming member 21 ′ is connected to the core 19 from the opening 13a ′ of the bottom plate 13. Prior to projecting toward the bottom surface, each water passage hole forming member 22 is installed between the bottom plate 13 and the core 19, and then the water guide groove forming member 21 ′ is opened from the opening 13 a ′ of the bottom plate 13 to the core 19. The same positioning action can be obtained by projecting toward the bottom surface of the water passage and fitting the projecting portion into the groove portion 22c on the bottom surface of each water passage hole forming member 22. In addition, in this case, since each water passage hole forming member 22 can be pressed from both the upper and lower sides, an action that can firmly fix each water hole forming member 22 can be obtained.

  Furthermore, in the above-described embodiment, the rear end of the core support beam 18 is fixed to the rear end plate 14. However, as shown in FIG. 12, the core support beam 18 ′ is formed in an L shape. A configuration in which the vertically long portion is fixed to the rear end of the frame 11 and the horizontally long portion of the core support beam 18 ′ is loosely inserted into the insertion hole 14 a formed in the rear end plate 14 may be adopted. By adopting such a configuration, the rear end plate 14 can be opened at a predetermined angle using the gap between the inner surface of the insertion hole 14a and the outer surface of the core support beam 18 ', so that the rear end and the rear end of the water channel block C1 can be opened. Even when the plate 14 is in close contact with the plate 14, the close contact can be released by opening the rear end plate 14.

  Further, in the above-described embodiment, an example in which the present invention is applied to the mold 10 for manufacturing the water channel block C1 shown in FIG. 1 is shown. However, the bottom surface of the water flow channel C1a of the water channel block C1 shown in FIG. Even if the present invention is applied to a formwork for manufacturing a so-called portal-type water channel block having a shape that is open on the side, the same effect as described above can be obtained.

[Second Embodiment]
13 to 24 show a second embodiment of the present invention.

  First, the shape of the water channel block C2 manufactured by the following mold 40 will be described with reference to FIGS.

  The water channel block C2 is used when a water channel is constructed, and the whole has a rectangular parallelepiped shape and has a flow channel C2a having a substantially rectangular cross section along the front-rear direction. Further, the upper surface C2b of the water channel block C2 has a V-shaped cross section inclined downward toward the center in the width direction. Furthermore, two water guide grooves C2c are provided at the center in the width direction of the upper surface C2b of the water channel block C2 at intervals in the front-rear direction, and a water passage hole C2d reaching the water channel C2a is formed between the adjacent water guide grooves C2c. One is provided.

  The depth of each water guide groove C2c is about ½ or less of the thickness of the top plate portion of the water channel block C2, and has a cross-sectional shape in which the lateral width gradually decreases from top to bottom. The water passage hole C2d has a shape in which the grating G can be detachably fitted.

  Next, the structure of the mold 40 for manufacturing the water channel block C1 will be described with reference to FIGS.

  The mold frame 40 includes a frame 41 having a rectangular upper surface shape, a bottom plate 43 having a rectangular upper surface shape provided on the frame 41 via a support frame 42, and a pivotal support ( A rear end plate 44 that can be opened and closed via a shaft support (not shown), a front end plate 45 that can be opened and closed via a shaft support (not shown) at the front end of the base frame 41, and a shaft at the left end of the base frame 41. A left side plate 46 that can be opened and closed via a support (not shown) and a right side plate 47 that can be opened and closed via a shaft support (not shown) at the right end of the frame 41 are provided.

  The bottom plate 43 has an inverted V-shaped cross section inclined upward toward the center in the width direction, and two rectangular openings 43a are provided at the center in the width direction of the bottom plate 43 at intervals in the front-rear direction. The rear wife plate 44 is configured to be openable and closable. However, the rear wife plate 44 does not need to be opened in the course of manufacturing the water channel block, and may be fixed to the frame 41 with an appropriate fixing device so as not to be opened and closed.

  Further, the rear end of the core support beam 48 is fixed to the rear end plate 44, and a core 49 for forming the flow channel C2a is attached to the core support beam 48. As shown in FIG. 19, the core 49 has a substantially C-shaped cross section having a separation portion on the side surface. The core 49 is attached to the core support beam 48 to operate in a steady state by operating a core expansion / contraction mechanism (not shown). 19 (B)) can be changed to a reduced form (see FIG. 19 (A)), and vice versa. In addition, although what has the isolation | separation location in the side surface was shown as the core 49 in drawing, you may use what has the isolation | separation location in the bottom as the core 49.

  Further, a support base 50 that is long in the front-rear direction is disposed below the bottom plate 43, and two water guide groove forming members 51 are provided on the upper surface of the support base 50 at intervals corresponding to the openings 43 a of the bottom plate 43. Is provided. Each water guide groove forming member 51 has a cross-sectional shape in which the lateral width gradually increases from top to bottom. The support base 50 can be moved up and down by operating a lifting mechanism (not shown) using a V-shaped link or the like, and when it is lifted, the water guide groove forming members 51 are moved from the openings 43 a of the bottom plate 43 toward the bottom surface of the core 49. It can project without contact with the core 49, and when descending, each water guide groove forming member 51 is drawn below the upper surface of the bottom plate 43 through each opening 43 a of the bottom plate 43 to be in a non-projecting state. it can.

  Reference numeral 52 denotes a water passage hole forming member. The water hole forming member 52 is similar to the water passage hole C2d shown in FIG. 13 and has a slightly smaller outer shape. This is consistent with the front-to-back spacing. In addition, the bottom surface of the water passage hole forming member 52 has an inverted V-shaped cross section aligned with the center portion in the width direction of the top surface of the bottom plate 43.

  Next, a method for manufacturing the water channel block C2 by the mold 40 will be described with reference to FIGS. 19 to 21 and FIG.

  At the time of manufacture, as shown in FIG. 19A, the lifting mechanism is operated to raise the support base 50 with the core 49 in the contracted form, and the two water guide groove forming members 51 are moved to the bottom plate 43. It protrudes from the opening 43a toward the bottom surface of the core 49 without contacting the core 49. Subsequently, the water passage hole forming member 52 is inserted into the gap between the bottom plate 43 and the core 49 from either the left or right direction, and the water hole forming member 52 is inserted between the adjacent water guide groove forming members 51 in the protruding state. Of course, after inserting the water passage hole forming member 52 at a predetermined position on the upper surface of the bottom plate 43, the two water guide groove forming members 51 are not connected to the core 49 from the openings 43 a of the bottom plate 43 toward the bottom surface of the core 49. Even if it makes it protrude by contact, it is possible to make it the state which inserted the water flow hole formation member 52 between the water guide groove formation members 51 of the adjacent protrusion state.

  The water guide groove forming member 51 existing before and after the inserted water passage hole forming member 52 plays a role of determining the position of the water hole forming member 52 in the front and rear direction. Further, since the bottom surface of the water passage hole forming member 52 has an inverted V-shaped cross section aligned with the center portion in the width direction of the upper surface of the bottom plate 43, the water hole formation is achieved by aligning the opposite V-shaped surfaces with each other. Positioning of the member 52 in the left-right direction is performed.

  Then, as shown in FIG. 19B, the core expansion / contraction mechanism is operated to return the core 49 in the contracted form to the steady form. At this time, the upper surface of the water passage hole forming member 52 is pushed downward by the bottom surface of the core 49, and as a result, the water passage hole forming member 52 and the bottom plate 43 are disposed between the adjacent water guide groove forming members 51. It is installed in a state sandwiched between the core 49.

  The water flow hole forming member 52 can be installed after the core 49 in the reduced form is returned to the steady form. In this case, as shown in FIG. 20, the water passage hole forming member 52 may be pushed into the gap between the bottom plate 43 and the core 49 existing between the protruding water guide groove forming members 51.

  Since the form of the mold 40 after the water hole forming member 52 is installed is as shown in FIG. 15, the front end plate 45, the left side plate 46, and the right side plate 47 are closed in the same form, and the mold clamping mechanism (not shown) is operated. The mold is then clamped, and then concrete is placed in the mold 40 to form the desired water channel block.

  After the block formation, the lifting mechanism is operated to lower the support base 50, and the two water guide groove forming members 51 are extracted from the water channel block C2 and below the upper surface of the bottom plate 43 through the openings 43a of the bottom plate 43. Pull in to make it non-projecting. Then, by operating the core expansion / contraction mechanism, the core 49 in the steady state is reduced, the front end plate 45, the left side plate 46, and the right side plate 47 are opened, and then the water channel block C2 is withdrawn from the core 49. Remove from the mold 40. Since the water passage hole forming member 52 remains embedded in the water channel block C2, the water hole forming member 52 is taken out of the mold 40 together with the water channel block C2.

  Then, as shown in FIG. 21, the water passage hole forming member 52 is pressed outward from the inside of the taken out water channel block C2, and the water hole forming member 52 is extracted from the water channel block C2. Thus, the water channel block C2 shown in FIG. 13 is manufactured.

  Thus, according to the above-mentioned formwork and manufacturing method, by forming the member 51 that forms the water guide groove C2c and the member 52 that forms the water passage C2d in the water channel block C2, the water guide groove is formed. Since the member 51 and the water passage hole forming member 52 can be separately extracted from the water channel block C2, when the water guide groove forming member 51 is extracted from the water channel block C2 and when the water hole forming member 52 is extracted from the water channel block C2, it is not much. A large force is not required, and damage such as chipping or cracking is difficult to be given to the water channel block C2 at the time of each extraction.

  In addition, since the water guide groove forming member 51 and the water passage hole forming member 52 are configured separately, the water guide groove forming member 51 is changed to one having a different height or the vertical movement amount of the lifting mechanism is changed. By adjusting and changing the protrusion amount of the water guide groove forming member 51, the depth of the water guide groove C2c formed in the water channel block C2 can be easily changed, and the water passage hole forming member 52 is changed to another shape. Thus, the width dimension of the water passage hole C2d formed in the water channel block C2 can be easily changed.

  Furthermore, since the water passage hole forming member 52 installed between adjacent protruding water guide groove forming members 52 is sandwiched between the bottom plate 43 and the core 49, the water passage hole forming member 52 after installation is provided. Thus, it is possible to prevent the water passage hole forming member 52 from being displaced due to vibration, impact, or the like when placing concrete in the mold 40.

  In the above-described embodiment, the positioning in the left-right direction when installing the water hole forming member 52 is performed in the width direction of the upper surface of the bottom plate 43 having the same shape as the bottom surface of the water hole forming member 52 having an inverted V shape. Although it is performed by aligning with the central portion, as shown in FIG. 22, preferably two or more convex portions 43b are formed in the central portion in the width direction of the upper surface of the bottom plate 43, and can be fitted to the convex portions 43b. If the concave portion 52 b is formed on the bottom surface of the water hole forming member 52, the concave portion 52 b on the bottom surface of the water hole forming member 52 is fitted to the convex portion 43 b on the top surface of the bottom plate 43 to fit the water hole forming member 52. Positioning in the left-right direction when installing can be performed more accurately. Of course, even if a convex portion is formed on the bottom surface side of the water passage hole forming member 52 and a concave portion that can be fitted to the convex portion is formed on the upper surface side of the bottom plate 43, the same positioning action is achieved by fitting both the concave and convex portions. Obtainable. Moreover, since each water-hole forming member 22 can be pressed from both up and down, each water-hole forming member 22 can be firmly fixed.

  Although not shown, a rectangular shallow groove capable of fitting the bottom of the water hole forming member 52 is formed at a position where the water hole forming member 52 is installed on the upper surface of the bottom plate 43, and the shallow groove is formed. The same positioning action can be obtained even if the bottom of the water passage hole forming member 52 is fitted together.

  Further, as shown in FIG. 23, one water guide groove forming member 51 ′ long in the front-rear direction is formed on the upper surface of the support base 50, and an opening 43 a ′ corresponding to the water guide groove forming member 51 ′ is formed in the bottom plate 43. At the same time, a groove portion 52c into which the water guide groove forming member 51 ′ can be directly fitted is formed on the bottom surface of the water passage hole forming member 52, and the water guide groove forming member 51 ′ is connected to the bottom surface of the core 49 from the opening 43a ′ of the bottom plate 43. The water passage hole forming member 52 is installed between the bottom plate 43 and the core 49 before protruding toward the bottom, and then the water guide groove forming member 51 ′ is opened from the opening 43 a ′ of the bottom plate 43 to the bottom surface of the core 49. The same positioning action can be obtained by projecting toward the bottom and fitting the projecting portion into the groove 52c on the bottom surface of the water hole forming member 52. In addition, in this case, since the water passage hole forming member 22 can be pressed from both the upper and lower sides, an effect that the water passage hole forming member 52 can be more firmly fixed is obtained.

  Further, in the above-described embodiment, the rear end of the core support beam 48 is fixed to the rear end plate 44. However, as shown in FIG. 24, the core support beam 48 'is formed in an L-shape. A configuration in which the vertically long portion is fixed to the rear end of the frame 41 and the horizontally long portion of the core support beam 48 ′ is loosely inserted into an insertion hole 44 a formed in the rear end plate 44 may be adopted. By adopting such a configuration, the rear end plate 44 can be opened at a predetermined angle using the gap between the inner surface of the insertion hole 44a and the outer surface of the core support beam 48 ', so that the rear end and the rear end of the water channel block C2 can be opened. Even when the plate 44 is in close contact with the plate 44, the close contact can be released by opening the rear end plate 44.

  Furthermore, in the above-mentioned embodiment, although the example which applied this invention to the formwork 40 for manufacturing the water channel block C2 shown in FIG. 13 was shown, the bottom face of the flowing water channel C2a of the water channel block C2 shown in FIG. Even if the present invention is applied to a formwork for manufacturing a so-called portal-type water channel block having a shape that is open on the side, the same effect as described above can be obtained.

It is a perspective view of a channel block concerning a 1st embodiment of the present invention. It is the longitudinal cross-sectional view fractured | ruptured by the plane containing the water conveyance groove | channel of the water channel block shown in FIG. 1, and the longitudinal cross-sectional view fractured | ruptured by the plane containing the water flow hole of the water channel block shown in FIG. It is a perspective view of the formwork for manufacturing the water channel block shown in FIG. It is the figure which excluded the core and the core support beam from the formwork shown in FIG. It is a figure which shows the state which lowered the water guide groove formation member in FIG. 4, and cut | disconnected the water flow hole formation member. FIG. 4 is a perspective view of a support base and a water guide groove forming member in the mold shown in FIG. 3. It is explanatory drawing of the method of manufacturing the water channel block shown in FIG. 1 with the mold shown in FIG. It is explanatory drawing of the method of manufacturing the water channel block shown in FIG. 1 with the mold shown in FIG. It is explanatory drawing of the method of manufacturing the water channel block shown in FIG. 1 with the mold shown in FIG. It is explanatory drawing of the other positioning method of the water flow hole formation member in manufacturing a water channel block. It is explanatory drawing of the further another positioning method of the water flow hole formation member in manufacturing a water channel block. It is a partial fracture perspective view of a formwork which shows a modification of a core support beam of a formwork shown in FIG. It is a perspective view of a waterway block concerning a 2nd embodiment of the present invention. It is the longitudinal cross-sectional view fractured | ruptured by the plane containing the water conveyance groove | channel of the water channel block shown in FIG. 13, and the longitudinal cross-sectional view fractured | ruptured by the plane containing the water flow hole of the water channel block shown in FIG. It is a perspective view of the mold for manufacturing the water channel block shown in FIG. It is the figure which excluded the core and the core support beam from the formwork shown in FIG. It is a figure which shows the state which lowered the water conveyance groove formation member in FIG. 16, and cut | disconnected the water flow hole formation member. FIG. 16 is a perspective view of a support base and a water guide groove forming member in the mold shown in FIG. 15. It is explanatory drawing of the method of manufacturing the water channel block shown in FIG. 13 with the formwork shown in FIG. It is explanatory drawing of the method of manufacturing the water channel block shown in FIG. 13 with the formwork shown in FIG. It is explanatory drawing of the method of manufacturing the water channel block shown in FIG. 13 with the formwork shown in FIG. It is explanatory drawing of the other positioning method of the water flow hole formation member in manufacturing a water channel block. It is explanatory drawing of the further another positioning method of the water flow hole formation member in manufacturing a water channel block. FIG. 16 is a partially broken perspective view of a mold showing a modification of the core support beam of the mold shown in FIG. 15.

Explanation of symbols

  C1 ... Formwork, C1a ... Flow channel, C1b ... Top surface, C1c ... Water guide groove, C1d ... Water passage hole, 10 ... Formwork, 11 ... Base frame, 13 ... Bottom plate, 13a ... Opening, 14 ... Rear end plate, 15 ... Front end plate, 16 ... left side plate, 17 ... right side plate, 19 ... core, 20 ... support base, 21 ... water guide groove forming member, 22 ... water passage hole forming member, C2 ... formwork, C2a ... flow channel, C2b ... Upper surface, C2c: Water guide groove, C2d: Water passage hole, 40: Formwork, 41 ... Base frame, 43 ... Bottom plate, 43a ... Opening, 44 ... Rear end plate, 45 ... Front end plate, 46 ... Left side plate, 47 ... Right side plate , 49... Core, 50... Support, 51. Water guide groove forming member, 52.

Claims (2)

A base frame, a bottom plate provided on the base frame, front and rear end plates provided openably and closably on the base frame, left and right side plates provided openably and closably on the base frame, and a closed front wife A formwork for manufacturing a waterway block provided with a core for forming a waterway that is sandwiched between a plate and a rear end plate,
A plurality of openings formed at intervals in the front-rear direction at a portion facing the core of the bottom plate can protrude toward the core in a non-contact manner, and in the protruding state, a water guide groove is formed on the upper surface of the water channel block. A plurality of water guide groove forming members capable of forming
It can be installed in the state where it is sandwiched between the bottom plate and the core between adjacent protruding water guide groove forming members, and in the installed state, a water passage leading to the flow channel is formed between the water guide grooves on the upper surface of the water channel block. A water hole forming member to be obtained,
A form for manufacturing a water channel block. A base frame, a bottom plate provided on the base frame, front and rear end plates provided openably and closably on the base frame, left and right side plates provided openably and closably on the base frame, and a closed front wife A method for producing a water channel block using a mold having a flow channel forming core sandwiched between a plate and a rear plate,
Projecting a plurality of water guide groove forming members in a non-contacting manner with respect to the core from each of a plurality of openings formed at intervals in the front-rear direction at a portion facing the core of the bottom plate;
A water passage hole forming member is installed in a state sandwiched between a bottom plate and a core between adjacent water guide groove forming members in a protruding state,
After closing the front end plate, rear end plate, left side plate and right side plate, concrete is placed in the mold to form a channel block,
A water channel block in which a plurality of water guide grooves are formed and water passage hole forming members are embedded after each water guide groove forming member is pulled out from the water channel block to be in a non-projecting state and the front end plate, rear end plate, left side plate and right side plate are opened. Take it out of the formwork,
Pull out the water passage hole forming member from the extracted water channel block,
A method for manufacturing a water channel block.

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