TWI783813B - Mold and method of forming hole in concrete waffle slab by using the same - Google Patents

Abstract

The instant disclosure is related to providing an apparatus and a method for removing a mold from a concrete waffle slab. The apparatus includes a supporting rack, a screw rod, an engaging member and a driving mechanism. The screw rod is rotatably disposed in a screw hole of the supporting rack. The engaging member is disposed on one end of the screw rod and is configured to engage with the mold. The driving mechanism is connected to the other end of the screw rod to provide torque to the screw rod.

Description

Mold and method for making holes in concrete grating slabs using the mold

The present disclosure is concerned with providing an apparatus and method for releasing a mold from a grating.

With the vigorous development of emerging technologies, semiconductors have a wide range of applications and their demand is increasing day by day. Emerging technologies such as artificial intelligence, Internet of Vehicles/Internet of Things, Fintech blockchain or cloud medical care all need to use semiconductor products (such as chips) for rapid and complex calculations. Therefore, in order to meet the demand for a large number of semiconductor products, the demand for building semiconductor factories is also increasing. During the manufacturing process of semiconductors, the amount of dust in the surrounding environment must be strictly controlled to avoid damaging the accuracy and reliability of semiconductor products. The clean room is built with lattice beam perforated floor (grid slab) structure, which uses positive pressure to push the dust out of the clean room through the perforation of the lattice slab, and then returns the clean air to the clean room again through filtered return air. It is currently commonly used in semiconductor factories. Design way.

General grating manufacturing methods can be divided into two types: on-site pouring and field pouring. However, no matter whether it is pouring on site or casting, it is necessary to set a certain number of molds inside the grid plate, and then pour concrete slurry between these internal molds and the outer form surrounding the grid plate reinforcement cage to form the grid plate and the inside of the grid plate. perforation. One of the conventional construction methods is to keep the mold in the grid plate after the grid plate is formed, that is, not to demould the grid plate and the mold in it, so each unit The grid board needs to use a certain number of molds that cannot be reused, resulting in an increase in manufacturing costs. Another conventional method is to use a traditional striking tool, such as a hammer, to hit the top of the mold after the grating is formed, so that the mold can be released from the concrete surface in the perforation it is in contact with, so that the mold can be reused . However, due to the difficulty in precisely controlling the tapping point and the tapping force in this traditional tapping method, it is easy to damage the concrete surface of the grating slab and/or cause deformation or damage of the mould.

The reason is that, in order to solve the above problems, an embodiment of the present invention provides a method capable of separating a mold formed in a hole in the concrete grating slab from the hole quickly and without damaging the surface of the concrete grating slab and without damaging the mould. demoulding equipment. The concrete grid plate includes a top surface and a bottom surface opposite to the top surface, and the hole communicates with the top surface and the bottom surface. The diameter of the lower end of the mold is larger than the diameter of the upper end of the mold. The mold includes a top wall and a side wall. The top wall includes a plurality of perforations, and the inner surface of the side wall includes a plurality of longitudinal ribs thereon.

In the above embodiments, the demoulding device includes a support frame, a screw, a coupling piece and a driving mechanism. The supporting frame includes a plurality of legs and a supporting body. A plurality of legs are fixed to the supporting body, and the supporting body includes a screw hole therein. The screw rod is rotatably arranged in the screw hole of the supporting body. The external thread of the screw rod cooperates with the internal thread of the screw hole. The coupling part is arranged at one end of the screw rod and configured to engage with the longitudinal rib of the mold, and the driving mechanism is connected with the other end of the screw rod and provides torque to the screw rod. In one embodiment of the present invention, the coupling member includes a disc-shaped structure, a peripheral edge of the disc-shaped structure has a groove opposite to the longitudinal rib, and the disc-shaped structure includes a positioning groove formed thereon, wherein the positioning groove and the The grooves are alternately arranged along the periphery of the disk-shaped structure.

According to an embodiment of the present invention, the demoulding method using the above-mentioned demoulding equipment includes: turning over the concrete grating slab so that the bottom surface of the concrete grating slab is placed upward; providing and placing the upper The demoulding device is above the bottom surface of the concrete grating slab; the joint is placed in the mold to engage the longitudinal ribs; and the driving mechanism is activated to rotate the screw and make the screw move linearly relative to the support frame, thereby pulling the mold from the concrete grating The plates separate and expose the holes. In one embodiment of the present invention, the step of engaging the coupling member with the longitudinal rib comprises: the disc-shaped structure enters the mold at a first predetermined angle, and the longitudinal rib passes through the groove; The second predetermined angle engages with the positioning groove.

In another embodiment of the present invention, the demoulding device includes a body, an impacted structure, a plurality of elongated engaging elements and an impacting element. The impacted structure is located above one of the upper surfaces of the body. The elongated engaging part is fixedly connected to a lower surface of the body, and is used to pass through and be arranged in a plurality of through holes in the top wall of the mould. The impact member is used to provide an impact force to the impacted structure.

According to an embodiment of the present invention, the method of demoulding using the above-mentioned demoulding device comprises: providing and placing the above-mentioned demoulding device above the top surface of the concrete grating; passing the elongated joints through the mold and against the longitudinal ribs; And impacting the impacted structure with the impact member, so that the mold is separated from the concrete grating and the hole is exposed.

In yet another embodiment of the present invention, the demoulding device includes a support frame, a fixing mechanism, a pushing structure and a driving mechanism. The support frame includes a plurality of legs and a support body. The support body includes a telescoping mechanism therein, and a plurality of legs are fixed to the support body. The fixing mechanism is connected to the supporting body and used for fixing the supporting body to the top surface of the concrete grating. The pushing structure includes a pushing surface for contacting with the mold and providing a pushing force to the mold. The pushing structure is connected with the telescoping mechanism of the support body of the support frame. The driving mechanism is connected with the telescoping mechanism supporting the main body and drives the telescoping mechanism to perform telescoping action, so as to provide a thrust to the pushing structure. In one embodiment of the present invention, the fixing mechanism includes: a beam structure and a plurality of column structures fixed to the beam structure, the beam structure is connected with the support body of the support frame, and its two ends are divided In addition, a fixed arm is configured to extend to and abut against the bottom surface of the concrete grating. The support body of the support frame includes a through hole therein, and the support body of the support frame is slidably sleeved on the beam structure through the through hole.

According to an embodiment of the present invention, the demoulding method using the above-mentioned demoulding device includes: providing and placing the above-mentioned demoulding device above the top surface of the concrete grating slab, and the fixed arm abuts the bottom surface of the concrete grating slab; Move the hole along the beam structure, move the support body of the support frame above the hole and set the legs of the support frame around the hole; and use the drive mechanism to drive the telescopic mechanism to perform telescopic movements, so that the pushing structure provides a thrust to the mold to separate the mold from the concrete grating and expose the holes.

11: Outer mold

12: Bottom mold

13: Internal space

15: Top cover

20: Mold

21: side wall

22: top wall

23: Longitudinal ribs

30: steel cage

31: Extension

40: Concrete grating

41: top surface

42: bottom surface

45: hole

50: demoulding equipment

51: support frame

52: screw

53: Combination

54: positioning slot

55: Driving mechanism

60: demoulding equipment

61: Ontology

62: Elongated engagement piece

63: Shock structure

64: handle

65: limit structure

66:Impact piece

67: handle

70: demoulding equipment

70a: demoulding equipment

71: support frame

72: Fixing mechanism

73: Push structure

74: Driving mechanism

75: Fixing mechanism

150: Ontology

151: handle

152:Fixer

211: upper end

212: lower end

213: inner surface

215: perforation

511: Leg

512: Support body

513: screw hole

530: Disc structure

531: Groove

611: upper surface

612: lower surface

711: support body

712: Legs

713: Pad structure

714: telescopic mechanism

715: through hole

721: Beam structure

722: fixed arm

723: vertical extension

724: Lateral extension

725: column structure

726:Roller

741: pipeline

751: cable

752: Locking piece

753: Protective Pad

S10: Method

S11, S12, S13, S14: steps

S20: method

S21, S22, S23, S24: steps

S30: method

S31, S32, S33: steps

1 and 2 are schematic diagrams showing some steps of forming the holes of the grid plate in an embodiment of the present invention.

Fig. 3 shows a schematic top view of an upper cover covering a mold in a grid plate in an embodiment of the present invention.

Figure 4 shows a schematic bottom view of a mold in a grid plate according to an embodiment of the present invention.

5-8 are schematic diagrams showing some steps of the lattice panel molding method in one embodiment of the present invention.

FIG. 9 shows a flowchart of a demoulding method according to an embodiment of the present invention.

10-15 are schematic diagrams showing some steps of a demoulding method according to an embodiment of the present invention.

Fig. 16 shows a flowchart of a demoulding method according to an embodiment of the present invention.

Fig. 17 shows a schematic diagram of a demoulding device according to an embodiment of the present invention.

18 and 19 are schematic diagrams showing some steps of a demoulding method according to an embodiment of the present invention.

Fig. 20 shows a flowchart of a demoulding method according to an embodiment of the present invention.

Fig. 21 shows a schematic diagram of a demoulding device according to an embodiment of the present invention.

22-23 are schematic diagrams showing some steps of a demoulding method according to an embodiment of the present invention.

Fig. 24 shows a schematic diagram of a demoulding device set on a concrete grating slab according to an embodiment of the present invention.

In order to better understand the characteristics, content and advantages of this creation and the effects it can achieve, this creation is hereby combined with the accompanying drawings and described in detail as follows in the form of an embodiment, and the purpose of the diagrams used therein is only For the purpose of illustrating and assisting the specification, the proportion and configuration relationship of the attached drawings should not be interpreted or limited to the patent scope of this creation.

Figures 1, 2, 5-8 show schematic diagrams of some steps in a method of molding a concrete grating panel in one embodiment of the present invention. In one embodiment, as shown in FIG. 1 , the method for molding a concrete grating slab includes providing an outer form 11 and a bottom form 12, wherein the outer form 11 is located above the bottom form 12 and surrounds the outer periphery of the bottom form 12 set to define an inner space 13 .

As shown in FIG. 2 , a plurality of molds 20 for forming holes are placed in the inner space 13 . The mold 20 includes a side wall 21 and a top wall 22 . The side wall 21 forms a truncated hollow conical structure. The upper end 211 of the side wall 21 connects to the edge of the top wall 22 , extends away from the top wall 22 and terminates at the lower end 212 . In one embodiment, the extension direction of the side wall 21 is inclined outward relative to the top wall 22 , so that the diameter W2 of the lower end 212 of the mold 20 is larger than the diameter W1 of the upper end 211 of the mold 20 .

Please refer to FIG. 2 and FIG. 3 at the same time. In one embodiment, an upper cover 15 is disposed above the top wall 22 of the mold 20 . The upper cover 15 may include a body 150 and a plurality of handles 151 . The main body 150 contacts and covers the top wall 22 , and the handle 151 is disposed on the opposite side of the main body 150 facing the top wall 22 , preferably at the periphery of the main body 150 . In one embodiment, the upper cover 15 is combined with the mold 20 by a fixing member 152 (such as a bolt), so as to prevent the upper cover 15 from being moved during construction. In one embodiment, the body 150 can match the shape of the top wall 22 and have an area slightly larger than the top wall 22 . In this way, when the body 150 is disposed above the top wall 22 , the edge of the body 150 slightly protrudes from the outer edge of the top wall 22 .

Please refer to FIG. 4 , which shows a schematic bottom view of the mold 20 located in the grid plate. In the embodiment of FIG. 4, the mold 20 includes a plurality of longitudinal ribs 23 formed on the inner surface 213 of the side wall 21 of the mold 20. For example, four longitudinal ribs 23 may be provided on the inner surface 213 of the mold 20, wherein Each longitudinal rib 23 is arranged equidistantly in the circumferential direction of the mold 20 . However, it can be understood that the embodiments of the present invention are not limited thereto, and the number of the longitudinal ribs 23 can be adjusted according to actual needs. In some other embodiments, the longitudinal ribs 23 may be omitted.

In one embodiment, the top wall 22 of the mold 20 further includes a plurality of perforations 215 disposed above the at least one longitudinal rib 23, wherein the projected position of the at least one longitudinal rib 23 on the top wall 22 overlaps the upper perforation 215. . In one embodiment, the number of the perforations 215 corresponds to the number of the longitudinal ribs 23 , that is, a perforation 215 is disposed above and above each longitudinal rib 23 . In some other embodiments, the through hole 215 is omitted.

In one embodiment, as shown in FIG. 5 , the method for molding a concrete grating includes setting a reinforcement cage 30 between the outer mold 11 and the mold 20 . Both ends of the reinforcement cage 30 include extensions 31 , which extend beyond the outer mold 11 and protrude to the outside of the inner space 13 . The extension part 31 may be U-shaped or hook-shaped.

In one embodiment, as shown in FIG. 6, the method for molding concrete gratings further includes pouring concrete in the interior space 13, and waiting for it to solidify to form concrete gratings 40, wherein each mold 20 forms A hole 45 is in the concrete grating 40 , and the hole 45 communicates with the top surface 41 and the bottom surface 42 of the concrete grating 40 . In an exemplary embodiment, the concrete is placed at a height substantially equal to the height of the mold 20 such that the top surface 41 of the concrete grating 40 is flush with the top wall 22 of the mold 20 . The cover 15 is arranged above the mold 20 . In this case, since the area of the cover 15 is larger than that of the top wall 22 of the mold 20 , the periphery of the cover 15 will abut against the top surface 41 of the concrete grating 40 . Thereby, when the construction personnel walk on the top surface 41 of the concrete grating slab 40, the cover body 15 can prevent the construction personnel from stepping on the mold 20 directly, causing the mold to fall or shift, and endanger the safety of the construction personnel.

In one embodiment, as shown in FIG. 7 , the method for molding a concrete grating further includes removing the outer formwork 11 and the bottom formwork 12 . And, as shown in FIG. 8 , the method of molding the concrete grating further includes removing the cover 15 disposed above the mold 20 . Next, the method for molding the concrete grating further includes separating the mold 20 in the concrete grating 40 from the hole 45 by using a demoulding method.

FIG. 9 shows a flowchart of a demoulding method S10 according to an embodiment of the present invention. The demoulding method S10 includes a step S11 of providing a concrete grating slab 40 as shown in FIG. 8 . The demoulding method S10 further includes a step S12 of turning over the concrete grating slab 40 so that the bottom surface 42 of the concrete grating slab 40 is placed upward. The demoulding method S10 further includes a step S13 of providing a demoulding device 50 and engaging the demoulding device 50 with the mold 20 . The demoulding method S10 further includes a step S14 of activating a driving mechanism 55 to separate the mold 20 from the concrete grating 40 and expose the hole 45 .

Please refer to FIG. 10 , according to an embodiment of the present invention, the demoulding device 50 includes a support frame 51 , a screw rod 52 and a coupling member 53 . The support frame 51 is configured so that the demoulding device 50 Stable placed on the concrete grating 40. In one embodiment, the support frame 51 includes two legs 511 and a support body 512 , and the two legs 511 are respectively connected to two ends of the support body 512 . After the demoulding device 50 is placed on the bottom surface 42 of the turned concrete grating slab 40, the supporting body 512 is parallel to the bottom surface 42 of the concrete grating slab 40, and the legs 511 are against the bottom surface of the concrete grating slab 40 42. The substantial center of the supporting body 512 has a threaded hole 513 passing therethrough. The screw 52 is rotatably disposed in the threaded hole 513 of the supporting body 512 , wherein the external thread of the screw 52 matches the internal thread of the threaded hole 513 .

The coupling member 53 is detachably provided at one end of the screw rod 52 and configured to engage with the longitudinal rib 23 of the mold 20 . Specifically, the combination part 53 includes a disc structure 530 . The diameter of the disc-shaped structure 530 is selected so that the disc-shaped structure 530 can protrude into the interior of the mold 20 and engage with the longitudinal ribs 23 . A peripheral edge of the disk structure 530 has a plurality of grooves 531 , and the grooves 531 have a width allowing the longitudinal ribs 23 to pass through. In addition, the combination member 53 includes a plurality of positioning grooves 54 formed on the disc structure 530 and arranged alternately with the grooves 531 along the periphery of the disc structure 530 . In one embodiment, the number of grooves 531 and the number of positioning grooves 54 are equal to the number of longitudinal ribs 23 of the mold 20 , but the invention is not limited thereto. The number of the grooves 531 or the number of the positioning grooves 54 may be greater than the number of the longitudinal ribs 23 of the mold 20 to facilitate the engagement of the mold 20 with the longitudinal ribs 23 .

The above-mentioned step S13 further includes, putting the combination part 53 of the demoulding device 50 into the mold 20 ( FIG. 11 ), wherein the disc-shaped structure 530 enters the mold 20 at a first predetermined angle. At the above-mentioned first predetermined angle, the groove 531 is relative to the position of the longitudinal rib 23 of the mold 20, so when the disc-shaped structure 530 enters the process of the mold 20, the longitudinal rib 23 passes through the groove 531, so that the disc-shaped structure 530 reaches the longitudinal direction. Below the rib 23.

The above step S13 also includes rotating the coupling member 53 to a second predetermined angle ( FIG. 12 ). At the above-mentioned second predetermined angle, the positioning groove 54 is located below the longitudinal rib 23 and is aligned with the longitudinal rib. Bar 23 engages. In one embodiment, the screw 52 engages with a nut at the center of the combination part 53 after the combination part 53 is put into the mold 20 to jointly form a picking mechanism. Moreover, during the operation of the combination member 53 rotating from the first predetermined angle to the second predetermined angle, the combination member 53 rotates together with the screw rod 52 . Therefore, when the coupling part 53 rotates, the coupling part 53 will simultaneously move in the vertical direction, thereby completing the engagement between the positioning groove 54 and the longitudinal rib 23 .

After the coupling member 53 is engaged with the mold 20 , the above step S14 is performed: a driving mechanism 55 is activated to separate the mold 20 from the concrete grating 40 and expose the hole 45 . In one embodiment, before starting the driving mechanism 55, as shown in FIG. opposite end. In this way, after the driving mechanism 55 is started, as shown in FIG. Holes 45 are separated and exposed.

In one embodiment, the method S10 repeats steps S12-S14 multiple times to separate all the molds 20 from the concrete grating 40 and expose all the holes 45 using the same demoulding device 50, and then complete the production of the concrete grating 40, as shown in the figure 15.

FIG. 16 shows a flowchart of a demoulding method S20 according to another embodiment of the present invention. The demoulding method S20 includes a step S21 of providing a concrete grating slab 40 as shown in FIG. 8 . The demoulding method S20 further includes a step S22 of providing a demoulding device 60 above the top surface 41 of the concrete grating 40 . Steps S23 and S24 of the demoulding method S20 will be described later.

Please refer to FIG. 17 , in an embodiment of the present invention, the demoulding device 60 includes a body 61 , an impacted structure 63 , a plurality of elongated engaging elements 62 , and an impacting element 66 . The body 61 is a disc structure and has an upper surface 611 and a lower surface 612 opposite to the upper surface 611 . The elongated engaging member 62 is fixed to the lower surface 612 of the body 61, and the elongated engaging member 62 can be vertically aligned with the lower surface. Extend in the direction of 612. The elongated engaging member 62 may extend less than the height of the mold 20 . The impacted structure 63 is disposed above the upper surface 611 of the main body 61 and protrudes from the upper surface 611 of the main body 61 . The impact member 66 is disposed separately from the body 61 and used to provide an impact force to the impacted structure 63 . A plurality of handles 64 can be provided on the body 61 of the demoulding device 60 , and a handle 67 can also be connected to the impact member 66 to facilitate the operation of the demoulding device 60 . In addition, the demoulding device 60 may include a plurality of limiting structures 65 connected to the periphery of the main body 61 .

In one embodiment, as shown in FIG. 18 , the above step S22 further includes step S23, placing the body 61 of the demoulding device 60 together with the elongated engaging member 62 on the top surface 41 of the concrete grating 40, wherein the elongated The engagement piece 62 passes through the hole 215 of the mold 20 and abuts against the upper end of the longitudinal rib 23 located below the hole 215 . At this time, the height of the limiting structure 65 is slightly higher than the top surface 41 of the grid plate 40 .

After the elongated engaging member 62 is engaged with the mold 20 , the demoulding method S20 further includes a step S24 of impacting the impacted structure 63 with the impact member 66 to separate the mold 20 from the concrete grating 40 and expose the hole 45 . Specifically, as shown in FIG. 18 , the impact member 66 is manually or mechanically dropped from above the main body 61 by gravity and impacts the impacted structure 63 . Affected by this impact external force, as shown in FIG. 19 , the mold 20 will be separated from the concrete grid plate 40 to expose the hole 45 . It is worth noting that when the body 61 approaches the hole 45 , the stop structure 65 will move from a position closer to the top surface 41 of the grating 40 to abut against the top surface 41 of the concrete grating 40 , thereby preventing the body 61 from entering the hole 45 . Since the body 61 will rest on the top surface 41 of the concrete grating 40 , the mold 20 will naturally fall by gravity and separate from the elongated engaging member 62 of the demoulding device 60 .

FIG. 20 shows a flowchart of a demoulding method S30 according to another embodiment of the present invention. The demoulding method S30 includes a step S31 of providing a concrete grating slab 40 as shown in FIG. 8 . The demoulding method S30 further includes step S32, providing a demoulding device 70 on the top surface of the concrete grating 40 41 above. The step S33 of the demoulding method S30 will be described later.

Please refer to FIG. 21 , the demoulding device 70 includes a support frame 71 , a fixing mechanism 72 and a pushing structure 73 . The supporting frame 71 includes a supporting body 711 and a plurality of legs 712 . The supporting feet 712 surround the supporting body 711 and are fixedly connected to the supporting body 711 . The pad structure 713 can be disposed on the bottom of the leg 712 to increase the contact area and friction between the leg 712 and the concrete grating 40 and protect the concrete grating 40 from damage due to pressure. The supporting body 711 includes a telescoping mechanism 714 (for example: hydraulic cylinder) therein. In addition, the supporting body 711 further includes a through hole 715 thereon. The pressing structure 73 is connected below the telescoping mechanism 714 . The bottom of the pressing structure 73 has a pressing surface for contacting the top wall 22 of the mold 20 .

Please refer to FIG. 21 and FIG. 22 at the same time, the fixing mechanism 72 is connected to the support frame 71 and used to fix the support frame 71 above the top surface 41 of the concrete grating 40 . In one embodiment, the fixing mechanism 72 includes a beam structure 721 and one or more column structures 725 . The column structures 725 connect the bottom surfaces of the beam structures 721 and are configured to support the beam structures 721 above the top surface 41 of the concrete grating 40 . The through hole 715 of the supporting body 711 is sleeved on the beam structure 721 and can move relative to the beam structure 721 .

In one embodiment, the fixing mechanism 72 further includes one or more rollers 726 disposed on the bottom of the column structure 725 . After the demoulding device 70 is placed on the top surface 41 of the concrete grating slab 40 , the column structure 725 can be moved on the top surface 41 of the concrete grating slab 40 by the rollers 726 . In this way, the fixing mechanism 72 and the support frame 71 disposed thereon can slide on the top surface 41 of the concrete grating 40 , reducing manual handling.

In one embodiment, as shown in FIGS. 21 and 22 , the fixing mechanism 72 further includes two fixing arms 722 . The fixed arms 722 are configured to extend to and abut the bottom surface 42 of the concrete grating slab 40 to increase the overall stability of the demoulding apparatus 70 . Specifically, each fixed arm 722 packs It includes a vertically extending portion 723 and a laterally extending portion 724 . The vertical extension part 723 is connected to one end of the beam structure 721 and vertically extends downward. The length of extension of the beam structure 721 is chosen such that the lower end of the vertical extension 723 is lower than the bottom surface 42 of the concrete grating 40 after the fixing mechanism 72 is placed over the top surface 41 of the concrete grating 40 . The lateral extension 724 is connected to the other end of the vertical extension 723 opposite to the beam structure 721 and extends parallel to the beam structure 721 . In this way, as shown in FIG. 21, the beam structure 721, the vertical extension 723 and the lateral extension 724 together form a U-shaped clamping structure, so that the demoulding device 70 is arranged above the top surface 41 of the concrete grating slab 40. After that, it abuts against the bottom surface 42 of the concrete grating 40 , thereby increasing the stability of the demoulding device 70 .

In one embodiment, as shown in FIG. 22 , the demoulding device 70 further includes a driving mechanism 74 . The driving mechanism 74 is connected to the telescoping mechanism 714 of the supporting body 711 through a pipeline 741 , so as to drive the telescoping mechanism 714 to perform a telescoping action and provide a thrust to the pushing structure 73 . The driving mechanism 74 can drive the telescopic action of the telescoping mechanism 714 in various suitable ways. For example, the driving mechanism 74 may include a compressor and the telescoping mechanism 714 may include a hydraulic cylinder. The driving mechanism 74 provides a pressurized liquid to the driving telescopic mechanism 714 through the pipeline 741 to drive the telescopic mechanism 714 to expand and contract.

In one embodiment, after the demoulding device 70 is disposed on the top surface 41 of the concrete grating 40 , the support frame 71 is not disposed in alignment with the hole 45 . To solve this problem, the step S32 further includes moving the support body 711 of the support frame 71 above the hole 45 along the beam structure 721 through the through hole 715 and disposing the legs 712 of the support frame 71 around the hole 45 . In this way, personnel can easily move the support frame 71 above the hole 45 without laboriously moving the support frame 71 .

After the demoulding device 70 is set, the demoulding method S30 further includes the step S33, using the driving mechanism 74 of the demoulding device 70 to drive the telescopic mechanism 714 to remove the mold 20 downward from the concrete grating slab 40 . In one embodiment, as shown in FIG. 23 , the driving mechanism 74 drives the telescoping mechanism 714 to expand and contract, so that the pushing surface of the pushing structure 73 contacts the mold 20 and provides a thrust to push the mold 20 . Pushed by the pushing structure 73 , the mold 20 will separate from the concrete grating 40 .

In one embodiment, after step S33 is completed, the personnel can further move the support frame 71 along the beam structure 721, so that the support frame 71 reaches the position of another mold 20 arranged in the same transverse direction (parallel to the extending direction of the beam structure 721). And repeat step S33 to remove the other mold 20 . After all the molds 20 in the same transverse direction have completed the demoulding process, the personnel can push the fixing mechanism 72 along the longitudinal direction, so that the support frame 71 reaches the position of one of the plurality of molds 20 arranged in another transverse direction and repeat step S33, To remove each mold 20 one by one. Therefore, with the setting of the fixing mechanism 72 , personnel can efficiently complete the demoulding procedure for removing all the molds 20 on the concrete grating slab 40 .

It should be understood that the fixing mechanism used to assist the positioning of the support frame 71 in the embodiment of the present invention is not limited to the above-mentioned embodiment, but may have various changes. For example, in the embodiment shown in FIG. 24 , the demolding device 70 a includes a securing mechanism 75 . The fixing mechanism 75 includes a cable 751 and a plurality of locking pieces 752 . The locking member 752 can be a hook or a buckle, and is connected to two ends of the cable 751 . After the demoulding device 70 a is installed on the top surface 41 of the concrete grating 40 , the cable 751 passes through the through hole 715 of the support frame 71 , and the locking member 752 is fastened to the extension portion 31 of the steel cage 30 . In one embodiment, the demoulding device 70a further includes a plurality of protection pads 753 disposed between the cables 751 and the concrete grating 40 to protect the cables 751 or the concrete grating 40 from being damaged due to friction.

The term "a" or "an" in this article is used to describe the elements of the creation and ingredients. This term is only for the convenience of description and to give the basic concept of this creation. This statement should be read to include one or at least one, and the singular also includes the plural unless it is clearly stated otherwise. When used in conjunction with the word "comprising" in the claims, the word "a" may mean one or more than one. In addition, the term "or" herein means "and/or".

Words such as "above", "below", "up", "left", "right", "down", "body", "base", "vertical", "horizontal", "side" unless otherwise specified , "higher", "lower", "upper", "above", "below" and other spatial descriptions refer to the directions shown in the drawings. It should be understood that the spatial descriptions used herein are for illustration purposes only, and that actual implementations of the structures described herein may be spatially arranged in any relative orientation, such limitations not altering the advantages of the embodiments of the present invention. For example, in the description of some embodiments, providing that an element is "on" another element may encompass situations where the former element is directly on (eg, in physical contact with) the latter element as well as a Or a situation where a plurality of intervening elements are located between the former element and the latter element.

As used herein, the terms "approximately", "substantially", "substantial" and "about" are used to describe and allow for minor variations. When used in conjunction with an event or circumstance, these terms can mean both circumstances in which the event or circumstance expressly occurred as well as circumstances in which the event or circumstance closely approximated to occur.

The above-mentioned embodiments are only to illustrate the technical ideas and characteristics of this creation. Its purpose is to enable those who are familiar with this technology to understand the content of this creation and implement it accordingly. It should not be used to limit the patent scope of this creation. Equal changes or modifications made in accordance with the spirit disclosed in this creation shall still be covered by the patent scope of this creation.

20: Mold

30: steel cage

40: Concrete grating

41: top surface

42: bottom surface

45: hole

50: demoulding equipment

51: support frame

52: screw

53: Combination

54: positioning slot

55: Driving mechanism

511: Leg

512: Support body

513: screw hole

530: Disc structure

Claims (9)

A mold is suitable for making a hole in a concrete grating, which includes: a top wall including a plurality of perforations; a side wall with an upper end and a lower end, the side wall is connected to an edge of the top wall through the upper end and extending away from the top wall and terminating at the lower end, wherein the direction of extension of the side wall is inclined outward relative to the top wall such that the side wall has a hollow conical shape; and a plurality of longitudinal ribs formed on one of the side walls The inner surface is separated from the top wall by a distance, and the projected position of one of the plurality of longitudinal ribs on the top wall is overlapped with one of the plurality of through holes. The mold according to claim 1, wherein the number of the plurality of perforations is the same as the number of the plurality of longitudinal ribs. The mold as claimed in claim 1, wherein each of the plurality of longitudinal ribs is equidistantly arranged in the circumferential direction of the mold. The mold as described in any one of claims 1 to 3 further includes: a body of an upper cover, the body is combined with the top wall in a detachable manner, wherein the body matches the shape of the top wall and has a slightly greater than the area of the top wall. The mold according to claim 4, wherein the upper cover further includes a handle, the handle is disposed on the opposite side of the main body facing the top wall, and is located on the periphery of the main body. A method of making a concrete grating, comprising: providing a bottom form and an outer form positioned above the bottom form and surrounding the outer periphery of the bottom form to form an inner space; The mold is placed in the inner space, the lower end of the side wall of the mold contacts the bottom mold; at least one reinforcement cage is set between the outer mold and the mold; pouring a concrete in the inner space, and standing for waiting The concrete is cured; the outer form and the bottom form are removed; and a demoulding device is provided, and an external force is applied after engaging the demoulding device with the plurality of longitudinal ribs of the mould, to remove the mould from the concrete lattice Plates separated. The method as claimed in item 6, wherein the step of arranging at least one reinforcement cage between the outer mold and the mould, includes passing two extensions at both ends of the reinforcement cage through the outer mold so that they protrude to the The exterior of the interior space. The method as claimed in claim 6, wherein the demoulding device includes a disc-shaped structure, and the method includes: entering the disc-shaped structure into the mold through the lower end at a first predetermined angle, and making the plurality of longitudinal ribs Through a plurality of grooves on the disc-shaped structure; and rotating the disc-shaped structure to engage with a plurality of positioning grooves on the disc-shaped structure at a second predetermined angle; and moving the disc-shaped structure upwards, and then the disc-shaped structure The mold is detached from the concrete grating and exposed the hole. The method of claim 6, wherein the demoulding device includes an elongated engaging member, and the top wall of the mold further includes a plurality of perforations above the plurality of longitudinal ribs, and the method includes: The elongated engaging member of the molding device passes through the perforation and abuts against the plurality of longitudinal ribs of the mould; and an external force is provided to impact the elongated engaging member of the demoulding device to separate the mold from the concrete grating and expose the hole.

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