KR102052627B1 - Apparatus and method of manufacturing modular pile - Google Patents

Abstract

The present invention relates to an apparatus of manufacturing a modular pile, and a method thereof, configured to allow as much as operations to be preliminarily performed at a separate worktable instead of a worktable with a tensioner in manufacturing a PHC modular pile with exposed both ends of a concrete pile, thereby increasing manufacturing efficiency, effectively managing materials, and easily separating an end of the modular pile. The apparatus of manufacturing a modular pile of the present invention configured to manufacture a module pile of which both end portions of a concrete pile are exposed comprises: a semi-cylindrical lower frame; an operation side mounting plate provided on an end of the other side of the lower frame to be able to move in an axial direction, and including a tensioner formed on an outer side; a fixing side mounting plate fixed to an end of one side of the lower frame; end members coupled to inner sides of the fixing side mounting plate and the operation side mounting plate, respectively, wherein a PC nut coupled to an end of a PC steel bar of a rebar net is fixed to any one of the end members; and a semi-cylindrical upper frame coupled to an upper portion of the lower frame.

Description

Modular file manufacturing apparatus and method {Apparatus and method of manufacturing modular pile}

The present invention in manufacturing the PHC modular piles, such as exposed both ends of the concrete pile, prior to the maximum number of operations in a separate work platform other than the tension workbench to increase the manufacturing efficiency, efficiently manage the material, easy to demolish One modular file manufacturing apparatus and method is provided.

Pretensioned spun high strength concrete pile (PHC pile) is a high-strength concrete pile by a pretensioning method, and is manufactured so that a hollow is formed inside the cylindrical mold by half-filling concrete and centrifugal molding (Registration No. 10-1124353). ).

The conventional PHC file was produced by the following method.

That is, the spiral reinforcing wire is wound around the outer side of the PC steel bar formed with an enlarged portion at both ends to form a reinforcing steel bar, and the joint cap or shoe is coupled to both ends of the reinforcing steel bar. At this time, the inserting cap and the shoe is formed in communication with the insertion hole and the eight-hole form, insert the enlarged portion of the PC steel rod through the insertion hole and then rotate the enlarged portion to the engaging hole side to engage the enlarged portion to catch the engaging hole.

The PHC pile manufacturing apparatus includes a movable side fixing plate and a fixed side fixing plate, respectively, on both sides of the mold, and an insertion hole and a locking hole are formed in an eight-character shape in the movable side fixing plate to which the tensioner is connected. Accordingly, the fixing bolt is first fastened to the insertion hole formed in the shoe or the joint cap, and then the sliding bolt is moved to the movable side fixing plate side so that the fixing bolt is inserted into the insertion hole of the movable side fixing plate. After that, the fixing bolt is caught by the locking hole by rotating the movable fixing plate.

In addition, the fixed side fixing plate fixed to the mold is impossible to rotate and move. Therefore, the fixing side fixing plate and the connecting cap or shoe are fixed to each other by fastening the fixing bolt while the joint cap or shoe is in close contact with the fixing side fixing plate.

However, in this case, the process of joining the shoe or joint cap and the reinforcing bar and the process of fastening the fixing bolts are performed on the tension workbench provided with the tensioner. Therefore, the work process is limited by the use of the tension work table, the work efficiency is lowered, there is a hassle to manage the fixing bolts individually.

On the other hand, the existing PHC pile attached to the end of the pile or shoe caps do not need a separate demoulding other than the upper and lower molds after curing the concrete.

Unlike the existing PHC file, PHC file is composed of only the concrete pile body without shoe or cap attached, so that only one standard file can be produced at the factory when manufacturing PHC file so that it can be used in the field regardless of the vertical position. A modular pile can greatly improve economics by increasing the efficiency of the production and management of the pile.

Since the modular pile is exposed to the end of the concrete pile, a separate mold is required to prevent the ridge from being piled.

However, in the conventional PHC pile manufacturing apparatus, since the fixed side fixing plate is attached to the lower mold, there is a problem in that demoulding is difficult when using this as a mold.

In order to solve the problems described above, the present invention in manufacturing the PHC modular piles, etc. exposed at both ends of the concrete pile, to increase the manufacturing efficiency and to efficiently manage the material by prioritizing as many operations as possible in a separate work platform rather than a tensile work bench. It is an object of the present invention to provide a modular file manufacturing apparatus and method.

An object of the present invention is to provide an apparatus and method for manufacturing a modular pile that can be easily demolded in a mold form.

The present invention according to a preferred embodiment for manufacturing a modular pile exposed both ends of the concrete pile, semi-cylindrical lower form; A movable side fixing plate which is provided to be movable in the axial direction at the other end end of the lower mold; A fixing side fixing plate fixedly installed at one end end of the lower mold; A mating member which is coupled to the inner side of the fixed side fixing plate and the movable side fixing plate, respectively, wherein a PC nut coupled to one end of the PC steel bar of the reinforcing steel bar is fixed; And a semi-cylindrical upper mold coupled to an upper portion of the lower mold. It is composed of, the ridge member is to form the end of the pile and the forming plate formed with a first through hole in the position where the PC nut of the pile and the body portion inserted into the first through hole and screwed to the PC nut and A fixing bolt comprising a head part provided at an outer end of the body part and fixed to a fixing plate, and a catching part protrudes from the body part of the fixing bolt, and an accommodating groove accommodating the catching part on an outer side of the forming plate; It provides a modular pile manufacturing apparatus characterized in that the body portion is penetrated and the engaging portion is provided with a departure prevention portion formed with a third through hole to prevent the separation of the fixing bolt.

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According to another exemplary embodiment of the present invention, the fixing side fixing plate has a second through hole formed at a position corresponding to the first through hole of the copper member, and the head of the fixing bolt passes through the second through hole. And a fixture having an insertion groove formed therebetween so that the body of the fixing bolt can be inserted between the outer side of the fixing plate and the fixing side fixing plate is coupled to the body of the fixing bolt to fix the fixing bolt to the fixing side fixing plate. Provide the device.

According to another exemplary embodiment of the present invention, a rotating member is rotatably coupled to an outer side surface of the fixing side fixing plate, and the fixing tool is provided at an outer end of the rotating member. do.

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According to another aspect of the present invention, the release preventing portion is detachably coupled to the molding plate, and the one side of the third through hole is formed so that the insertion hole having a larger diameter than the engaging portion is in communication with the third through hole. Provides a modular file manufacturing apparatus.

According to another preferred embodiment of the present invention, a support portion is formed between the locking portion and the head portion in the body portion of the fixing bolt, and a spring for pressing the fixing bolt to the outside on the outside of the body portion between the support portion and the separation prevention portion. It provides a modular file manufacturing apparatus, characterized in that provided.

The present invention according to another embodiment of the present invention relates to a method of manufacturing a modular pile by the modular pile manufacturing apparatus, (a) while winding a spiral reinforcement around a plurality of PC steel bars, while coupling the PC nut to both ends of the PC steel bar Manufacturing a reinforcing bar network; (b) coupling and fixing the member to the PC nut of the reinforcing bar network; (c) placing the reinforcing bar mesh to which the copper member is coupled to the upper part of the lower mold; (d) fixing the one side copper member and the other side copper member to the movable side fixing plate and the fixed side fixing plate, respectively; (e) placing concrete on the lower mold and coupling the upper mold to the upper part of the lower mold, and then pulling tension rods of the movable side fixing plate with a tensioner to introduce tension to the PC steel rod; And (f) curing after centrifugal molding by rotating the upper and lower molds; It provides a method for manufacturing a modular file comprising a.

According to the present invention has the following effects.

First, in manufacturing PHC modular piles with exposed ends of concrete piles, a pair of copper members, which serve as molds for the modular piles, are previously joined to the PC nuts of the reinforcing bar on the workbench, but the copper members on the upper part of the tension workbench. It can be fixed to the inside of the fixed side fixing plate and the movable side fixing plate provided at both ends of the lower mold. Therefore, it is possible to precede as much work as possible in a separate workbench rather than a tensile workbench, and the manufacturing efficiency is excellent.

Second, after the concrete of the modular pile is hardened, the copper member can be removed from the fixed side fixing plate and the movable side fixing plate, and then the copper member can be completed by removing the copper member at the end of the modular pile. It is easy.

Third, when the curling member is configured to include a release preventing portion formed with a receiving groove and a third through hole, the locking portion of the fixing bolt accommodated in the receiving groove is caught by the release preventing portion so that the fixing bolt is not separated from the forming plate. Therefore, the fixing bolt and the forming plate can be handled in a mutually coupled state, so that the material management is easy and the rebar network fixing work is easy.

1 is a side view showing the present invention modular file manufacturing apparatus.
2 is a perspective view showing a coupling relationship between a reinforcing bar mesh and a copper member.
3 is a cross-sectional view showing a detailed configuration of a curling member.
4 is a perspective view showing a coupling relationship between a curling member and a movable side fixing plate;
Fig. 5 is a perspective view showing a coupling relationship between a curling member and a fixing side fixing plate.
6 (a) and 6 (b) are front views each showing a fixed side fixing plate before and after fastener coupling;
7 (a) and 7 (b) are cross-sectional views illustrating a coupling relationship between the front-rear fixing member and the fixing side fixing plate, respectively.
8 is a perspective view showing a fixing side fixing plate to which an integrated fixture is coupled;
9 is a front view showing the fixing relationship of the fixing bolt by the integrated fixture.
Fig. 10 is a perspective view showing a molded plate to which a detachable integrated release preventing part is coupled;
Fig. 11 is a cross-sectional view showing a curling member provided with a detachable integral detachment preventing part.
12 is a perspective view illustrating a coupling relationship between the integral release preventing part, the fixing bolt, and the forming plate.
Fig. 13 is a sectional view showing an operation relationship of the release preventing part provided with the supporting part.
Fig. 14 shows a step-by-step process of the present invention modular file manufacturing method.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view showing a modular pile manufacturing apparatus of the present invention, and Fig. 2 is a perspective view showing a coupling relationship between a reinforcing bar network and a curling member.

As shown in Figure 1, 2, etc., the present invention modular file manufacturing apparatus for manufacturing a modular pile exposed to both ends of the concrete pile, semi-cylindrical lower mold (1); A movable side fixing plate (2) provided at the other end end of the lower mold (1) so as to be movable in an axial direction, and having a tension rod (23) at an outer side thereof; A fixed side fixing plate (3) fixedly installed at one end edge of the lower mold (1); It is coupled to the inner side of the fixed side fixing plate 3 and the movable side fixing plate 2, respectively, the mating member on which the PC nut 73 coupled to one end of the PC steel bar 71 of the reinforcing bar 7 is fixed ( 4a, 4b); And an upper mold (5) having a semi-cylindrical shape coupled to the upper portion of the lower mold (1). Characterized in that consists of.

In the present invention, in manufacturing a modular pile exposed to both ends of the concrete pile, prior to the maximum number of operations in a separate work platform rather than a tensile workbench to increase the manufacturing efficiency, efficiently manage the material, easy to demolish the modular file It is for providing a manufacturing apparatus.

The modular pile manufacturing apparatus of the present invention comprises upper and lower molds 1 and 5, a movable side fixing plate 2, a fixed side fixing plate 3, and a curling member 4a and 4b.

The upper and lower molds (1, 5) to be closed to form a cylindrical shape, by filling the concrete half in the upper and lower molds (1, 5) and centrifugal molding can be produced PHC pile with a hollow inside.

The movable side fixing plate 2 and the fixed side fixing plate 3 are provided at the other end and one side end, which are both sides of the lower mold 1, respectively.

The movable side fixing plate 2 is provided to be movable in the axial direction, that is, the longitudinal direction of the modular pile to be manufactured, and a tension rod 23 is provided on the outside.

The fixed side fixing plate 3 is fixedly installed on the bottom of the mold 1.

The copper members 4a and 4b are respectively coupled to the inside of the fixed side fixing plate 3 and the movable side fixing plate 2.

A PC nut 73 coupled to one end of the PC steel bar 71 of the reinforcing bar 7 located inside the molds 1 and 5 is fixed to the flange members 4a and 4b.

Existing PHC piles do not need to demold the pile ends after hardening concrete, because the joint cap or shoe is attached to the ends.

However, modular piles without joint caps or shoes at the ends of the piles require a separate mold to prevent the bristles.

To this end, a pair of flap members 4a and 4b serving as molds in the pile flap are provided inside the fixed side fixing plate 3 and the movable side fixing plate 2, respectively.

In the case of manufacturing a modular pile without a joint cap or shoe at the tip of the pile, it was very difficult to work with the fixing bolt and the fixing nut of the fixing plate at the same time as the pile plate mold. On the other hand, in the present invention, since the copper members 4a and 4b are fixed to the reinforcing bar 7 in advance, only the copper members 4a and 4b need to be fixed to the fixing plates 2 and 3 at the upper part of the tension work bench.

On the other hand, after the concrete of the modular pile is completely hardened, each of the copper members 4a and 4b is first separated from the fixed side fixing plate 3 and the movable side fixing plate 2, and then the ends of the modular piles 4a and 4b. ) To complete the modular file creation.

The pair of copper members 4a and 4b may be previously coupled to the PC nut 73 of the reinforcing bar 7 on the workbench. Therefore, it is possible to work in advance irrespective of the work process of the tension workbench, which is excellent in manufacturing efficiency.

3 is a cross-sectional view showing a detailed configuration of the copper member, and FIG. 4 is a perspective view showing a coupling relationship between the copper member and the movable side fixing plate.

As shown in FIGS. 2 to 4 and the like, the curling members 4a and 4b are formed to form end portions of the pile, and a first through hole 411 is formed at a position where the PC nut 73 of the pile is to be fixed. The fixing unit (2, 3) is provided at the outer end of the body portion 421 and the body portion 421 is inserted into the plate 41 and the first through hole 411 and screwed to the PC nut (73) It can be configured as a fixing bolt 42 composed of a head portion 422 is fixed to.

The copper members 4a and 4b may be formed of a molding plate 41 and a fixing bolt 42.

The forming plate 41 is a portion in which the PC nut 73 coupled to the end of the PC steel bar 71 of the reinforcing bar 7 is closely attached to the mold plate to block the end of the modular pile.

The forming plate 41 is formed with a first through hole 411 at the position where the PC nut 73 of the reinforcing bar 7 is to be fixed.

The fixing bolt 42 is composed of a body portion 421 and the head portion 422, fixing the copper member (4a, 4b) to the fixing plate (2, 3).

The body portion 421 is inserted into the first through hole 411 of the forming plate 41 and screwed to the PC nut 73 to fix the PC nut 73 to the forming plate 41.

The body portion 421 is formed with a screw thread for coupling with the PC nut 73 on the outer peripheral surface.

The head part 422 is provided at an outer end of the body part 421 and is fixed to the fixing plates 2 and 3.

The rotatable movable side fixing plate 2 may be formed such that an insertion hole 22 having a diameter larger than the head portion 422 of the fixing bolt 42 and a catching hole 21 smaller than the head portion 422 communicate with each other. have.

Therefore, the head 422 of the fixing bolt 42 is inserted into the insertion hole 22, and then the movable side fixing plate 2 is rotated by an angle to move the fixing bolt 42 to be located in the locking hole 21. The copper member 4a can be connected with the movable side fixing plate 2.

After the hardening of the concrete is completed, the movable side fixing plate 2 is rotated in the reverse direction so that the fixing bolt 42 is positioned at the insertion hole 22 side, and then the movable side fixing plate 2 is retracted to move the movable side. The connection between the fixing plate 2 and the copper member 4a can be released.

As shown in FIG. 3, the locking portion 423 is protruded from the body portion 421 of the fixing bolt 42, and the locking portion 423 is accommodated outside the forming plate 41. A separation prevention part 43 having a third through hole 432 formed therein through the groove 431 and the body part 421 and the locking part 423 is caught to prevent the fixing bolt 42 from being separated may be provided. .

The curling members 4a and 4b may further include a departure preventing part 43.

The departure preventing part 43 is provided on the outside of the forming plate 41, the receiving groove 431 and the third through-hole 432 is formed.

The receiving portion 423 protruding from the body portion 421 of the fixing bolt 42 is accommodated in the receiving groove 431.

The locking portion 423 may be a nut fastened to the body portion 421.

The width of the receiving groove 431 is preferably formed more than the distance required to fasten the fixing bolt 42 to the PC nut (73).

The third through hole 432 penetrates the body portion 421 of the fixing bolt 42 but is formed through one surface of the separation preventing portion 43 so as not to pass through the locking portion 423.

Accordingly, the locking portion 423 is caught in the third through hole 432 so that the fixing bolt 42 is not separated from the forming plate 41.

Normally, one forming plate 41 requires about 9 to 12 fixing bolts 42. If the fixing bolt 42 and the forming plate 41 are separated from each other, material management is difficult.

Therefore, the handle members 4a and 4b may be configured to further include a departure preventing portion 43 so that the fixing bolt 42 and the forming plate 41 may be handled in a mutually coupled state.

As such, when the departure prevention part 43 is provided, material management such as the fixing bolt 42 is easy and the fixing operation of the rebar network 7 is easy.

Fig. 5 is a perspective view showing a coupling relationship between the flap member and the fixing side fixing plate, and FIGS. 6A and 6B are front views respectively showing the fixing side fixing plate before and after fixing the fixture, and FIG. And (b) are sectional drawing which shows the coupling relationship of the front-and-back fastening | curing | curing member and the fixing side fixing plate, respectively.

5 to 7, the fixing side fixing plate 3 has a second through hole 31 formed at a position corresponding to the first through hole 411 of the copper member 4b. The head portion 422 of the fixing bolt 42 passes through the second through hole 31, and the body portion of the fixing bolt 42 is disposed between the head portion 422 and the outer surface of the fixing side fixing plate 3. The fastener 6 having the insertion groove 61 formed therein to be inserted into the body portion 421 of the fixing bolt 42 is fixed to the fixing side fixing plate 3 by fixing the fixing bolt 42 to the insertion member 61. Can be configured.

A second through hole 31 may be formed in the fixed side fixing plate 3.

The second through hole 31 is formed at a position corresponding to the first through hole 411 formed in the copper member 4b coupled to the inside of the fixed side fixing plate 3.

As shown in (a) and (a) of FIG. 6, the head portion 422 of the fixing bolt 42 passes through the second through hole 31.

The second diameter is large enough to allow the head portion 422 of the fixing bolt 42 to pass through the fixing side fixing plate 3 in order to couple the curling member 4b to the fixing side fixing plate 3 which is not rotatable. The through hole 31 is formed.

Accordingly, the fixing bolt 42 is fixed to the fixing side fixing plate 3 by sliding the rebar mesh 7 and the copper member 4b coupled to the ends of the reinforcing steel mesh 7 without rotating the fixing side fixing plate 3. It can be inserted into the second through hole 31 of the.

A fixture 6 is provided between the head portion 422 of the fixing bolt 42 passing through the second through hole 31 of the fixing side fixing plate 3 and the outer surface of the fixing side fixing plate 3. .

The fastener 6 is formed with an insertion groove 61 into which the body portion 421 of the fixing bolt 42 can be inserted at one side, and can be configured in a U shape on the whole plane.

The diameter of the insertion groove 61 is configured to be larger than the diameter of the body portion 421 of the fixing bolt 42 and smaller than the diameter of the head portion 422.

Accordingly, as shown in Figure 6 (b), Figure 7 (b), the fastener 6 is the insertion groove 61 is coupled to the body portion 421 of the fixing bolt 42, the fixing bolt The 42 can be fixed to the fixed side fixing plate 3.

That is, the head portion 422 of the fixing bolt 42 is fixed by engaging the U-shaped fixture 6 to the body portion 421 in a state protruding outward of the fixing side fixing plate 3, The bolt 42 can be kept fixed to the fixed side fixing plate 3 without falling outward.

After the modular pile has been manufactured, the fixing bolt 42 is rotated to release the fixing member 4b from the PC nut 73 and then the fixing member 4b can be separated.

8 is a perspective view showing a fixing side fixing plate to which an integrated fixture is coupled, and FIG. 9 is a front view illustrating a fixing relationship of the fixing bolt by the integrated fixture.

8 and 9, a rotating member 60 is rotatably coupled to an outer surface of the fixed side fixing plate 3, and the fastener 6 is an outer end of the rotating member 60. It may be configured to extend to.

As described above, a plurality of fixing bolts 42 are required for one piece of copper member 4b, and the operation of installing the fixtures 6 for each fixing bolt 42 is cumbersome, and it is difficult to manage individual materials.

Therefore, the rotation of the rotating member 60 is coupled to the outer surface of the fixing side fixing plate 3 by engaging the central axis of the rotating member 60 and the plurality of fasteners 6 to the outer circumferential surface of the rotating member 60. It is possible to easily fix and release the plurality of fasteners 6 only by adjusting the angle.

Accordingly, the fixing operation of the fixture 6 can be made quickly and simply, and there is no separated material, so the material management is very easy.

At this time, the insertion groove 61 is formed on the side of the fixture 6 so that the body portion 421 of the fixing bolt 42 can be inserted into or removed from the insertion groove 61 by the rotation of the rotating member 60. .

Referring to FIG. 9, before inserting the fixing bolt 42, as shown in FIG. 9A, the space between the adjacent fasteners 6 is rotated to be at the position of the second through hole 31. Rotate member 60.

After the fixing bolt 42 is inserted, as shown in FIG. 9B, the insertion groove 61 is caught by the body 421 of the fixing bolt 42 and no longer rotates. Rotate) so that the insertion groove 61 is in the position of the second through hole 31.

In order to prevent the fixing state of the fixing bolt 42 from being released, fixing holes 32 and 601 may be formed at positions corresponding to each other in the rotating member 60 and the fixing side fixing plate 3. And by inserting the locking bar 602 in the fixing holes 32, 601 can be configured to prevent the fixing bolt 42 is pulled out during the manufacturing of the file.

The rotating member 60 may be configured in a circular plate shape.

In addition, by cutting one circular plate, the fixture 6 and the rotating member 60 may be integrally formed.

FIG. 10 is a perspective view showing a molded plate to which a detachable integral release preventing part is coupled, and FIG. 11 is a cross-sectional view showing a curling member provided with a detachable integral release preventing portion, and FIG. 12 is an integral release preventing portion, a fixing bolt, and a molding It is a perspective view which shows the coupling relationship of a board.

As shown in FIG. 10, FIG. 12, and the like, when the curling members 4a and 4b include the departure preventing portion 43, the separation preventing portion 43 is detachably attached to the molding plate 41. Coupled to, one side of the third through hole 432 may be formed to be in communication with the third through hole 432, the insertion hole 433 having a larger diameter than the locking portion 423.

As illustrated in FIG. 11, the detachment preventing part 43 may be fixed to the forming plate 41 by a bolt or the like.

Accordingly, after the separation prevention part 43 is separated from the forming plate 41, the damaged fixing bolt 42 may be removed and the fixing bolt 42 may be replaced.

In one side of the third through hole 432, the insertion hole 433 having a larger diameter than the locking portion 423 may be inserted into the third through hole so that the fixing bolt 42 can be easily dismantled and replaced by the release preventing part 43. And may be in communication with 432.

In this case, the engaging portion (423) from the locking portion 423 so that the end portion of the body portion 421 of the fixing bolt 42 is inserted into the first through hole 411 of the forming plate 41 in a state where the separation prevention portion 43 is installed. If the length to the end of the body portion 421 protruding to the outside of the 423 is larger than the width of the receiving groove 431, the fixing bolt 42 can not move toward the insertion hole 433, the fixing bolt 42 is You can prevent falling out.

When the separation preventing part 43 is separated from the forming plate 41, the fixing bolt 42 may be laterally moved toward the insertion hole 433 to remove the fixing bolt 42 through the insertion hole 433.

The departure prevention part 43 may be provided for each fixing bolt 42, respectively. However, in this case, since the number of bolt fastening points increases, it is also possible to connect each departure preventing portion 43 to form a disc or ring shape. That is, a plurality of fixing bolts 42 can be fixed at the same time with one departure preventing part 43.

At this time, the receiving groove 431 may be configured to be separated for each fixed bolt 42, it may be formed to be continuous along the fixed bolt 42 arranged in a circle.

It is sectional drawing which shows the operation relationship of the separation prevention part with a support part.

As shown in FIG. 13, a support part 424 protrudes between the locking part 423 and the head part 422 in the body part 421 of the fixing bolt 42, and is separated from the support part 424. Outside the body portion 421 between the prevention portion 43 may be provided with a spring 44 for pressing the fixing bolt 42 to the outside.

The fixing bolts 42 should be fastened to the plurality of PC nuts 73 in sequence. By the way, since the PC nuts 73 are already fixed to the PC steel bar 71 of the reinforcing bar 7, the end of the body portion 421 of the fixing bolt 42 protrudes into the forming plate 41. 41) is in close contact with the ends of the PC nuts 73, it is difficult to sequentially tighten the fixing bolts 42.

Therefore, as shown in FIG. 13A, the spring 44 is fixed to the forming plate 41 so that the fixing bolt 42 does not protrude into the forming plate 41 before the PC nut 73 is fastened. Can be configured to press outward.

13 (b) shows a state in which the end of the body portion 421 of the fixing bolt 42 protrudes into the forming plate 41 after the PC nut 73 is fastened.

14 is a diagram showing the step-by-step process of the present invention modular file manufacturing method.

The method of manufacturing a modular file of the present invention relates to a method of manufacturing a modular file using the above-described modular file manufacturing apparatus of the present invention with reference to FIGS. 1 to 13.

As shown in (a) to (e) of FIG. 14, the method of manufacturing a modular pile according to the present invention includes (a) winding and fixing a spiral reinforcement 72 around a plurality of PC steel bars 71, and a PC steel bar 71. Coupling the PC nut 73 to both ends of the) to manufacture the reinforcing bar network 7; (b) coupling and fixing the copper members (4a, 4b) to the PC nut (73) of the reinforcing bar (7); (c) placing the reinforcing bar 7 coupled with the copper members 4a and 4b on the upper part of the lower mold 1; (d) fixing the one side copper member 4a and the other side copper member 4b to the movable side fixing plate 2 and the fixed side fixing plate 3, respectively; (e) Placing concrete on the lower mold (1) and joining the upper mold (5) to the upper part of the lower mold (1) and pulling the tension rods 23 of the movable side fixing plate (2) with a tensioner PC steel bar Introducing a tension to 71; And (f) curing the upper and lower molds 1 and 5 by centrifugal molding; Characterized in that comprises a.

The step (a) of manufacturing the reinforcing bar 7 and the step (b) of fixing the mating members 4a and 4b to the PC nut 73 of the reinforcing bar 7 are not separate workbenches. (A) and (b) of FIG. 14.

That is, in the separate workbench it can be combined with the copper member (4a, 4b) and the reinforcing bar 7 in advance.

Accordingly, the steps (a) and (b) can be performed regardless of the use of the tension workbench, and thus the work efficiency is excellent.

Steps (c) to (e) are shown in FIGS. 14 (c) to (e), respectively.

Steps (e) and (f) are the same as those in the general PHC pile manufacturing process.

In step (e), the tensioner is not shown.

After the step (f), the upper and lower molds 1 and 5 are demolded, and steam curing is performed before the molds 1 and 5 are demolded.

After the steam curing is completed, the molds 1 and 5 may be demolded, and then autoclave curing may be performed for high-intensity expression of the manufactured modular pile.

Each configuration and role of the modular file manufacturing apparatus used in each step of the method for manufacturing a modular file of the present invention are as described in the above-described modular file manufacturing apparatus of the present invention.

1: lower mold 2: movable side fixing plate
21: hook hole 22: insertion hole
23: tension rod 3: fixed side fixing plate
31: second through hole 32: fixed hole
4a and 4b: copper member 41: molded plate
411: first through hole 42: fixing bolt
421: body portion 422: head portion
423: locking portion 424: support portion
43: departure preventing unit 431: receiving groove
432: third through hole 433: insertion hole
44: spring 5: upper mold
6: Fixture 61: Insertion Groove
60: rotating member 601: fixing hole
602: Locking Bar 7: Rebar Net
71: PC rod 711: enlarged portion
72: spiral reinforcement 73: PC nut

Claims (8)

To manufacture a modular pile exposed both ends of the concrete pile,
Semi-cylindrical lower mold 1;
A movable side fixing plate (2) provided at the other end end of the lower mold (1) so as to be movable in an axial direction and having a tension rod (23) at an outer side thereof;
A fixed side fixing plate (3) fixedly installed at one end edge of the lower mold (1);
It is coupled to the inner side of the fixed side fixing plate 3 and the movable side fixing plate 2, respectively, the mating member on which the PC nut 73 coupled to one end of the PC steel bar 71 of the reinforcing bar 7 is fixed ( 4a, 4b); And
An upper mold (5) having a semi-cylindrical shape coupled to an upper portion of the lower mold (1); Consist of
The curling members 4a and 4b are formed to form end portions of the pile, and the forming plate 41 and the first through hole (411) having a first through hole 411 formed at a position where the PC nut 73 of the pile is to be fixed. And a head portion 422 inserted into the 411 and screwed to the PC nut 73 and a head portion 422 provided at an outer end of the body portion 421 and fixed to the fixing plates 2 and 3. It is composed of a fixed bolt 42,
The engaging portion 423 is formed to protrude from the body portion 421 of the fixing bolt 42,
The outer side of the forming plate 41, the receiving groove 431 and the body portion 421 through which the locking portion 423 is accommodated and the locking portion 423 is caught to prevent the separation of the fixing bolt 42 Modular pile manufacturing apparatus characterized in that the separation prevention portion 43 is provided with three through-holes (432).
delete In claim 1,
In the fixing side fixing plate 3, a second through hole 31 is formed at a position corresponding to the first through hole 411 of the copper member 4b, and the head portion 422 of the fixing bolt 42 is formed. Is passed through the second through hole (31),
Between the head portion 422 and the outer surface of the fixing side fixing plate 3, a fixing member 6 having an insertion groove 61 formed therein so that the body portion 421 of the fixing bolt 42 can be inserted into the fixing bolt ( Modular pile manufacturing apparatus characterized in that coupled to the body portion 421 of the 42 to fix the fixing bolt 42 to the fixed side fixing plate (3).
In claim 3,
Rotating member 60 is rotatably coupled to the outer surface of the fixing side fixing plate 3, the fixture 6 is a modular pile production, characterized in that formed extending to the outer end of the rotating member 60 Device.
delete In claim 1,
The detachment preventing part 43 is detachably coupled to the forming plate 41, and an insertion hole 433 having a larger diameter than the locking part 423 is formed at one side of the third through hole 432. Modular pile manufacturing apparatus, characterized in that formed in communication with the (432).
In claim 1,
The body 421 of the fixing bolt 42 has a support 424 protrudingly formed between the locking portion 423 and the head 422, the body between the support 424 and the separation prevention portion 43 Modular pile manufacturing apparatus characterized in that the outer portion 421 is provided with a spring 44 for pressing the fixing bolt 42 to the outside.
Claims 1, 3, 4, 6 and 7, according to any one of the modular file manufacturing apparatus according to the modular file manufacturing method,
(a) winding the spiral reinforcement 72 around the plurality of PC steel bars 71 and fixing the same, while coupling the PC nuts 73 at both ends of the PC steel bars 71 to manufacture the reinforcing bar network 7;
(b) coupling and fixing the copper members (4a, 4b) to the PC nut (73) of the reinforcing bar (7);
(c) placing the reinforcing bar 7 coupled with the copper members 4a and 4b on the upper part of the lower mold 1;
(d) fixing the one side copper member 4a and the other side copper member 4b to the movable side fixing plate 2 and the fixed side fixing plate 3, respectively;
(e) Placing concrete on the lower mold (1) and joining the upper mold (5) to the upper part of the lower mold (1) and pulling the tension rods 23 of the movable side fixing plate (2) with a tensioner PC steel bar Introducing a tension to 71; And
(f) curing after centrifugal molding by rotating the upper and lower molds (1, 5); Modular file manufacturing method characterized in that it comprises a.

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