KR200352945Y1 - Mold for manufacturing manhole - Google Patents

Abstract

The present invention relates to a formwork used to make a concrete manhole in the shape of a hollow park, and more particularly, to reduce the number of powders, the time required for the installation and dismantling of the formwork's external formwork and internal formwork is shortened, safe and easy, Ladder installed on the inner circumferential surface of the manhole also relates to the formwork for manhole manufacturing to be manufactured at the same time to be purchased at the time of pouring concrete for manhole forming.

The present invention for realizing this is a pair of semi-cylindrical member is hinged one side end is coupled to the other end is installed in the outer form and the outer form is coupled and detachable by the fastening member and the cylindrical cylindrical portion of The internal formwork body portion having a predetermined section, the internal formwork auxiliary portion installed / detachable at the cutout section of the inner formwork body portion, and installed at both ends of the cutout section of the inner formwork body portion to contract or expand the cutout section. By providing a formwork for manhole production, characterized in that it comprises an internal formwork consisting of a turnbuckle for coupling or separating the auxiliary form the main body portion, the installation and disassembly is easy to significantly reduce the working time for the formwork installation Designed to be easy to install with excellent safety.

Description

Manhole formwork {Mold for manufacturing manhole}

The present invention relates to a formwork used to make a concrete manhole in the shape of a hollow park, and more particularly, to reduce the number of powders, the time required for the installation and dismantling of the formwork's external formwork and internal formwork is shortened, safe and easy, Ladder installed on the inner circumferential surface of the manhole also relates to the formwork for manhole manufacturing to be manufactured at the same time to be purchased at the time of pouring concrete for manhole forming.

A general manhole construction formwork, which is generally installed for sewage treatment, is used to form a round or square manhole using plywood or a metal panel or a synthetic resin panel (hereinafter, referred to as formwork). 'Inside formwork') and exterior wall forming formwork (hereinafter referred to as 'outside formwork') are used, and such formwork is manufactured to form a manhole in a circular shape or a square shape.

1 is a perspective view of a manhole manufacturing form of circular shape according to the prior art.

The outer formwork 10 is for forming the outer wall of the manhole, is formed in a cylindrical shape is divided into a plurality of panels.

The external formwork 10 is divided into three panels in FIG. 1, but the number thereof may vary depending on the size of the external formwork 10 and is generally divided into three to five numbers.

The outer die 10 is formed with a flange portion 10a protruding outward from the side seam portion of each panel, and is assembled by fastening to each flange portion 10a using a fastening member 11.

Inside the outer formwork 10 is provided with an inner formwork 20 for forming the inner wall of the manhole.

The inner formwork 20 is divided into a plurality of panels similarly to the outer formwork 10, and each panel is formed with a flange portion 20a protruding inwardly and assembled by the fastening member 12.

When the concrete is filled in the space between the outer formwork 10 and the inner formwork 20 configured as described above, and curing is completed after a predetermined time, the manhole is manufactured by removing the formwork.

Figure 2a is a view for explaining a method for installing a ladder in a circular manhole by a conventional formwork, Figure 2b is a cross-sectional view of the main part of Figure 2a.

The manhole is provided with a ladder on its inner wall surface to allow the worker to enter the inside, it is made by installing a plurality of ladder handles (5) longitudinally in a zigzag form step by step.

To this end, a hole for fixing the ladder handle 5 is fixed to the inner wall surface of the manhole, and both ends of the handle 5 for the ladder are buried in the buried hole 6 by using an adhesive or the like.

However, the conventional formwork is assembled by using a plurality of panels in consideration of the weight in order to move the formwork member and also to dismantle by manpower, so that the assembly process is complicated, so the installation and dismantling time takes a lot, each panel Joints are not used for a long time because they are deformed or damaged frequently due to the pressure of concrete.

For example, a synthetic resin panel has a lifespan of about 10 times and a metal panel generally has a lifespan of about 15 times.

In addition, it is a very inconvenient and complicated process to assemble a large number of panels to the upper side in the impression work to form the manhole once using formwork and install the formwork on the upper side again and pour concrete to increase the height of the manhole. Due to the excessive installation and dismantling time, there is a problem in safety that only work on an unstable state by working on the hollow manhole formed first and the disadvantage that only skilled personnel can work.

In addition, in order to install the handle for the ladder, the manhole must be drilled separately, work must be performed in the cramped manhole, and a separate ladder must be installed depending on the height of the manhole. There is a discomfort that is not good.

In addition, there is a problem in safety, because the handle for the ladder may be pulled out if it is not perfectly coupled because the structure for fixing the ladder handle in the buried hole.

Furthermore, when the ladder handle is installed in a zigzag form step by step on the inner wall of the manhole, it is easy to be gripped when entering and exiting because it is projected vertically toward the worker side. Although it is necessary to install the vertically projecting to the worker side, it is generally very difficult to drill diagonally to the concrete rigid body, so as shown in Figure 2b eventually drilled in the normal direction to the inner wall surface of the manhole and thereby the handle for the ladder Is installed in a direction that is not perpendicular to the operator in the zigzag form gripping parts of the left and right ladder handles do not achieve the same direction and is inclined to the 'V' shape is inconvenient to be easy to grip.

Therefore, the present invention is a long-cylindrical cylindrical formwork formed of a pair of semi-cylindrical members that can be combined and detached, and the long form / detachment between the cutout section of the inner formwork body and the inner formwork body section in which a certain section of the cylindrical circumference is cut out. The purpose of the present invention is to provide a formwork for manhole manufacturing, which is composed of an internal formwork auxiliary part, which is composed of an internal formwork assembled by a turnbuckle, and thus reduces the time required for installation and dismantling due to the small amount of powder.

1 is a perspective view of a manhole manufacturing die according to the prior art,

Figure 2a is a view for explaining a method for installing a ladder in a manhole of a circular shape by a conventional formwork,

2B is a cross-sectional view of the main portion of FIG. 2A;

3 is a perspective view of the front part of the formwork for manufacturing manhole according to an embodiment of the present invention,

Figure 4 is a perspective view of the rear part of the formwork for manufacturing manhole according to an embodiment of the present invention,

5 is an exploded perspective view of the formwork for manufacturing manhole according to an embodiment of the present invention,

Figure 6 is an exploded perspective view of the internal formwork of the manhole formwork according to an embodiment of the present invention,

Figure 7 is a main cross-sectional view of the drain hole forming ring according to an embodiment of the present invention,

8 is a perspective view of a state in which the multi-layer laminated formwork for manhole forming according to an embodiment of the present invention,

Figure 9a is an installation state of the lifting work ring for raising the manhole according to an embodiment of the present invention,

9B is a cross-sectional view of the main portion of FIG. 9A;

10 is a perspective view of the formwork for the floor and cover according to an embodiment of the present invention,

Figure 11 is a state of use of the manhole by the floor and cover formwork according to an embodiment of the present invention,

12 is a perspective view of the inner formwork of the manhole forming formwork according to another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: outside formwork 13: hinge

14 fastening member 20 internal formwork

21: internal formwork body part 22: internal formwork auxiliary part

23: turnbuckle 24: clasp

25: ladder handle 26: insertion hole

27: mounting plate 30: drain hole forming ring

41, 42: impression work ring 70: formwork for floor and cover

The present invention for achieving the above object is made of one set of the external formwork and the inner formwork is filled in the space between the outer formwork and the inner formwork in the manhole manufacturing formwork to form a manhole of a hollow hollow cylindrical form, 1 A pair of semi-cylindrical members are hinged at one end and the other end is coupled to and detachable in a hollow cylindrical shape by a fastening member; and an outer formwork spaced apart at regular intervals from the inside of the outer formwork and have a cylindrical circumference. The inner formwork body portion is cut in a predetermined section, the inner formwork auxiliary portion that is installed / detached in the cutout section of the inner formwork body portion, is installed at both ends of the cutout section of the inner formwork body portion to shrink or expand the cutout section Composed of a turnbuckle for coupling or separating the formwork auxiliary portion to the inner formwork body It has a structure including an internal formwork.

Hereinafter will be described in detail with reference to the accompanying drawings the configuration and operation of the manhole formwork according to a preferred embodiment of the present invention.

Figure 3 is a perspective view of the front portion of the manhole manufacturing formwork according to an embodiment of the present invention, Figure 4 is a perspective view of the rear portion of the manhole manufacturing formwork according to an embodiment of the present invention, Figure 5 is an embodiment of the present invention This is a separate perspective view of the formwork for manufacturing manholes.

The outer formwork 10 according to the present invention is a pair of semi-cylindrical member is hinged one end of the pair, the other end is configured to be fastened or detached by the fastening member (14).

However, the present invention is not limited thereto, and the hinge coupling portion may be installed to be detachably coupled using the fastening member.

The outer formwork 10 is for forming the outer wall of the manhole, a plurality of hinges 13 are installed in the longitudinal direction so that one side end is hinged and coupled, the other end is screw rod 14a and nut to be fastened or separated The fastening member 14 which consists of 14b is provided.

When the fastening member 14 is released, the outer mold 10 is configured such that opposite ends are opened to both sides with respect to an end coupled by the hinge 13 as shown in FIG. 5.

The outer formwork 10 protrudes a plurality of horizontal flanges 15 on its outer circumference to withstand the side pressure generated when the concrete is filled, and prevents the circular form of the outer formwork 10 from being deformed. The end coupled by the fastening member 14 is provided with a vertical flange portion 16 protruding outward to prevent the concrete from leaking out when the concrete is filled.

The inner formwork 20 is spaced apart from the inside of the outer formwork 10 at a concentric position.

The inner formwork 20 is for forming the inner wall of the manhole, and corresponds to the cutout section of the inner formwork body portion 21 and the inner formwork body portion 21 in which a predetermined section of the cylindrical circumferential cylindrical shape is cut out. It is formed in the shape of the internal formwork body portion 21, the internal formwork auxiliary portion 22, which is mounted on the cutout section of the inner formwork body 21, the inner formwork body portion 21 by the tightening operation is installed in the inner peripheral portion A turnbuckle 23 is provided to expand the cutout section of the internal formwork body portion 21 by contracting or unwinding the cutout section.

The inner formwork 20 protrudes a plurality of horizontal flange portions 29 on its inner circumference to withstand the side pressure generated when the concrete is filled, and prevents the circular form of the inner formwork 20 from being deformed. .

The inner die 20 has a vertical flange portion 21a protruding inwardly from the inner die body portion 21 and a vertical flange portion 22a protruding inwardly from the inner die auxiliary portion 22, each vertically formed. Through holes 55 are formed at the corresponding positions in the flange portions 21a and 22a, and the clasp 24 is inserted into the through holes 55 so that the inner die auxiliary part 22 is formed in the inner die body portion 21. ) Is mounted.

After the clasp 24 is inserted into the through hole 55, one end of the pressing portion 56 formed on the side of the vertical flange portion 22a of the inner mold auxiliary portion 22 and the other end of the inner portion of the vertical die body portion 21 Since it is located between the crimping portion 57 formed on the branch portion 21a side, the compression force from the crimping portions 56 and 57 together with the tightening operation of the turnbuckle 23 is generated to form the inner formwork body portion 21 and the inner formwork. The auxiliary part 22 is more firmly mounted.

On the other hand, the clasp 24 is prevented from being lost since the rearward movement of the clasp 24 is limited within a certain period by the stop 25 formed in the inner die body 21 at a certain rear portion thereof.

The internal formwork 20 has an internal formwork auxiliary portion 22 mounted to the internal formwork body portion 21 by the clasp 24 or the like, and fasteners 54a formed at both sides of the cutout section of the internal formwork body portion 21. , The turnbuckle 23 fixed to 54b contracts the cutout section of the internal formwork body portion 21 by the tightening operation, and thus the internal formwork auxiliary portion 22 is not compressed and detached.

In addition, the turnbuckle 23 is pivoted on one axis of the fasteners 54a and 54b separately from the fasteners 54a and 54b for fixing the turnbuckles 23 to both sides of the cutout section. A separate clamp 53 to be fixed is provided in the turning section of the turnbuckle 23 inside the inner die body 21.

The fastener 53 makes it easy to remove the internal mold auxiliary part 22 by moving the turnbuckle 23 to its inner side when dismantling the internal mold auxiliary part 22 from the internal mold main body 21. To ensure the convenience of work through the securing of, the internal formwork body portion 21 is fixed to the turnbuckle (23) to the fasteners (53) after the internal formwork auxiliary portion 22 is dismantled and the manhole and Separation takes place.

6 is an exploded perspective view of the internal formwork of the manhole formwork according to an embodiment of the present invention, Figure 7 is a sectional view of the main portion of the drain hole forming ring according to an embodiment of the present invention.

The turnbuckle 23 is composed of a central rotating body 23a and screw rods 23b coupled to both sides thereof, and the screw rods 23b have end portions formed at both sides of the cutout section of the inner die body 21. Since it is fixed to the fasteners 54a and 54b, the cutout section of the internal formwork body portion 21 is contracted or expanded by the forward rotation or the reverse rotation of the rotating body 23a.

After the concrete is cured from the formwork, the fastening member 14 of the external formwork 10 is released and the external formwork 10 is removed by opening the external formwork 10 to both sides based on the hinge 13, and the internal formwork is removed. (20) moves the clasp 24 to the rear to remove the internal formwork auxiliary part 22 from the internal formwork body part 21, and then tightens the turnbuckle 23 to the notch section of the internal formwork body part 21. The manhole and the inner formwork body portion 21 are easily separated while being contracted.

On the other hand, in the space between the outer formwork 10 and the inner formwork 20, the slit (31a) is formed in the annular shape in one side is close to the inner wall of the outer formwork 10, the other end is the inner formwork (20) It is installed on the support body 33, the support angle 33, which is installed on the inner side along the circumferential portion of the annular body 31, which is in close contact with the outer wall of the cylinder 31, and maintains the annular shape against the side pressure of the concrete, and tightening operation. The drain hole forming ring 30 made of a turnbuckle 32 for contracting the radius of the annular 31 or expanding the radius of the annular 31 by an unwinding operation is provided.

The drain hole is formed in the manhole as much as the portion occupied by the drain hole forming ring 30, and when the turnbuckle 32 is tightened, the radius of the drain hole forming ring 30 is reduced, so that the manhole and the drain hole forming ring 30 are easily separated.

In addition, the drain hole forming ring 30 is formed so that the outer peripheral surface is inclined upward toward the end side closer to the outer formwork 10 at the end in close contact with the inner formwork 20 so that it is more easily separated from the manhole.

In addition, the inner mold auxiliary portion 22 has an insertion hole 26 for installing a plurality of ladder handles 25 in the longitudinal direction inside the manhole, the area occupied by the ladder handle 25 in the insertion hole 26. Attaching plate 27 is installed to block the open area except.

The inner die 20 is provided with a handle 28 for installation to the upper side of the insertion hole 26 as shown in FIG.

The installation handle 28 is not only for the convenience of the worker installing the formwork when carrying or installing the internal formwork auxiliary portion 22, but also the ladder handle 25 is inserted into the insertion hole 26. After the role of the fixed support that can be tied together with a tape or a ties line, and the ladder handle 25 is tied in the installation handle 28 so that the concrete in the form does not deviate before curing, based on the installation handle 28 The ladder handle 25 also serves to protrude to a position that is easy to grip.

When the manhole forming concrete is poured in this way, the ladder handle 25 is integrally formed, so the ladder is easily installed, and the end of the ladder handle 25 is bent to be embedded in the concrete. Since it is a structure that cannot be removed, it is also perfect in safety. As the handle 25 for the ladder protrudes vertically toward the worker side, the gripping parts are formed in the same direction, so it is easy to grip, and the fluorescent plate is exposed to the exposed surface after installation of the attachment plate 27. Formation of the layer can make it easy to determine the position of the ladder handle 25 in the manhole with low roughness.

Concrete is filled in the formwork formed as described above, the manhole is formed, the distance between the outer formwork 10 and the inner formwork 20 becomes the thickness of the manhole, the outer formwork 10 and the inner formwork 20 The height formed by) becomes the length of the manhole.

8 is a perspective view of a state in which the manhole forming dies according to one embodiment of the present invention are laminated in multiple stages.

The external formwork 10 and the internal formwork 20 are fastening members 17 for fastening the horizontal flange portions 15 and 29 and the horizontal flange portions 15 and 29 to protrude outward and inwardly at the upper and lower ends thereof. Is provided to form a manhole having a multi-stage height at one time.

Manhole forming formwork having a height of such a multi-stage is first installed the outer formwork 10 and the inner formwork 20 for forming the lower manhole, the outer formwork 10 and the inner formwork 20 for forming the upper manhole. It can also be installed directly in multiple stages, the outer formwork 10 and the inner formwork in the state of completing the assembly from the outside to the upper side of the outer formwork 10 and the inner formwork 20 to form a lower manhole crane After lifting and multistacking, the concrete can be poured to form a manhole with a multistage height.

Figure 9a is an installation state of the lifting ring for lifting the manhole according to an embodiment of the present invention, Figure 9b is a sectional view of the main part of Figure 9a.

Impression work rings 41 and 42 are installed in the inner / outer diameter portion of the manhole formed as shown in FIG. 9A, and the outer formwork 10 and the inner formwork 20 are stacked on the upper side to form the manhole forming concrete. Since the manhole can be raised by pouring, it is possible to raise the manhole by using one manhole-made formwork.

The outer diameter portion lifting work ring 41 is provided at both sides of the cut-out section of the annular angle bar 41a and the annular angle bar 41a in which a predetermined section is cut in an annular shape, and a fastening member 41b for contracting the radius of the annular angle bar 41a. It is composed of) and is installed in the outer diameter part of the manhole already formed.

The inner diameter lifting ring 42 is provided in both annular angle bar 42a and annular angle bar 42a in which a predetermined section is cut in an annular shape and a turnbuckle 42b for expanding the radius of the annular angle bar 42a. It is configured to be installed on the inner diameter of the preformed manhole.

On the other hand, when the inner diameter lifting work ring 42 is installed on the upper side of the annular angle bar (42a) and laminated the inner formwork 20, when the disassembly work of the inner formwork 20 after curing the impression part concrete The operator can work on the scaffold installed inside the manhole so that the formwork can be safely removed.

10 is a perspective view of the floor and cover formwork according to an embodiment of the present invention, Figure 11 is a state diagram of the use of the manhole by the floor and cover formwork according to an embodiment of the present invention.

The manhole manufactured by the external formwork 10 and the internal formwork 20 is provided with a bottom and cover formwork 70 which can form the bottom 71 and the cover 72.

The bottom and cover formwork 70 is a pair of semi-cylindrical member is hinged one side end and the other end is installed to be coupled and detached in a hollow cylindrical shape by the fastening member, the outer end (side) Like 10), a hinge (not shown) is installed to be hinged and coupled, and a fastening member 74 made of a screw rod 74a and a nut 74b is provided to fasten or detach the other end.

The manhole bottom 71 can be formed by pouring concrete to the inside of the bottom and cover formwork 70 to cure, typically before reinforcing the concrete before the concrete is completed, and then installed to the upper side It is formed integrally with the manhole.

Manhole cover 72 is to cure by pouring concrete inside the bottom and the formwork for the cover 70, a separate ring (not shown in the figure), such as to form an entrance 73 which is a passage exposed to the ground After pouring the concrete so that the doorway 73 is formed.

Hereinafter will be described in detail with reference to the accompanying drawings the configuration and operation of the manhole formwork according to another embodiment of the present invention.

12 is a perspective view of the inner formwork of the manhole forming formwork according to another embodiment of the present invention.

Another embodiment of the present invention is to modify the coupling structure of the internal formwork 20 in the above embodiment.

As in the above-described embodiment, vertical flange portions 21a and 22a are formed in the internal formwork body part 21 and the internal formwork auxiliary part 22.

On the vertical flange portion 22a of the inner die auxiliary portion 22, a protrusion 51 protruding toward the inner die main body portion 21 is formed.

The vertical flange 21a of the inner die body 21 is formed with a cutting groove 59 into which the protrusion 51 is fitted, and the upper and lower surfaces thereof are in close contact with each other after the protrusion 51 is inserted into the cutting groove 59. The insertion part 52 is formed.

The through-hole 58 is sequentially formed in the protrusion 51 and the inserting portion 52, and the inner mold auxiliary portion 22 is inserted into and coupled to the through-hole 58 by the clasp 24, the upper side of which is bent. ) Is coupled to the inner die body 21.

Manhole manufacturing formwork according to the present invention as described above is a time required to install the formwork is completed in a few minutes and the time required for installation for the impression work is also completed in a few ten minutes, manhole formwork according to the prior art It takes tens of minutes just to install this formwork, and it takes several hours to install for the impression work, which is not only economical, but also very economical compared to not easy to work without skilled workers. It is easy to move to the back, so safety is excellent.

In addition, the formwork for manhole manufacturing according to the present invention can be used about 40 times or more because the parts are integrated as compared to the existing formwork can be used about 10 to 15 times.

As described above, the present invention can be easily installed and dismantled to greatly reduce the working time for the formwork installation, and the durability of the formwork is improved and economical, and it is easy to work in the pulling work as well as reduce the working time. It is possible to work without skilled personnel, and since the handle for the ladder is formed integrally with the manhole, there is an advantage of not having to drill a separate punch for the combination of the ladder installation handle.

Claims (7)

In the formwork for manhole manufacturing the hollow form of the hollow form of the manhole is formed by filling the space between the outer formwork and the inner formwork in the space between the outer formwork and the inner formwork, One pair of semi-cylindrical members are hinged on one side end and the other end is coupled to the outer mold in a hollow cylindrical shape by the fastening member; An inner formwork body part installed at a predetermined interval apart from the inside of the outer formwork, and a predetermined section of a cylindrical circumference is cut, an inner formwork auxiliary part which is long / detachable at a cutout section of the inner formwork body part, and a cutout of the inner formwork body part. And a mold formed at both ends of the section, the inner mold consisting of a turnbuckle that contracts or expands the cutout section and couples or separates the inner formwork auxiliary portion to the inner formwork body. According to claim 1, Between the outer formwork and the inner formwork is formed in a ring shape with a slit formed on the side of one end is in close contact with the inner wall of the outer formwork and the other end is close to the outer wall of the inner formwork, The support angle is installed along the inner circumference of the ring to maintain the ring shape, the drain hole forming ring consisting of a turnbuckle installed inside the ring to tighten or loosen the radius of the ring by tightening or loosening operation is additionally installed. Manhole production dies, characterized in that made. The manhole forming die according to claim 2, wherein the drain hole forming ring has an outer circumferential surface thereof inclined upwardly from the inner formwork to the outer formwork. The method according to claim 1, wherein the internal formwork auxiliary portion is formed with an insertion hole for installation of a handle for ladder which is provided in the longitudinal direction on the inner wall surface of the manhole, and an opening portion excluding the area occupied by the ladder handle in the insertion hole. Attachment plate is installed to prevent the manhole manufacturing die, characterized in that the handle for the ladder is formed integrally with the manhole. The mold for manufacturing a manhole according to claim 5, wherein the inner mold auxiliary part is provided with an installation handle which protrudes inward from the upper side of the insertion hole and is attached to the ladder handle after the ladder handle is inserted. The method of claim 1, wherein the annular angular bar that has a predetermined section is cut in an annular shape, and is provided on both sides of the notched section of the annular angular bar and configured to fasten to the outer diameter of the manhole formed by shrinking the radius of the annular angular bar. The outer diameter of the lifting work ring; Ring-shaped inner ring lifting work consisting of an annular angle bar that has a predetermined section cut into a ring shape, a turnbuckle installed on both sides of the cut section of the annular angle bar and expanding the radius of the annular angle bar to be fixed to the inner diameter of the formed manhole; Manhole work formwork, characterized in that the impression work ring made of additionally provided. The floor of claim 1, wherein the pair of semi-cylindrical members are hingedly coupled to one end of the pair of semi-cylindrical members, and the other end of the pair of semi-cylindrical members is coupled to and separated from the hollow cylinder by a fastening member to form a manhole bottom and a manhole cover. And formwork for manholes further comprising a formwork for the cover.