Concrete pouring equipment and pouring methods

Abstract

To provide concrete placing equipment and a placing method that can be applied to narrow construction sites and can place concrete over the entire area of a building to be constructed without fear of interference with other tower cranes, etc.SOLUTION: In concrete placing equipment 100 at a construction site, a distributor 70 is installed above a permanently installed column 10 in the middle of construction or already constructed through a mounting frame 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a concrete pouring facility and a concrete pouring method. [Background technology]

[0002] Concrete pouring at construction sites involves extending pipes and hoses from a concrete pump truck or other concrete pump to the pouring location, and pouring the concrete through the hose nozzle. Since the pipes and hoses are manually moved, refilled, and extended during concrete pouring, especially when the pouring area is large or the building being constructed has a complex structure, manually moving the pipes and hoses can be time-consuming and can affect the quality of the poured concrete. For example, when pouring concrete with different strengths into different sections, such as columns, beams, and slabs, the concrete must be poured separately for each section, resulting in time-consuming pipe reconnections. Therefore, to achieve efficient concrete pouring, a distributor is sometimes installed at the construction site, and the concrete pumped from the concrete pump is poured through pipes and hoses attached to the distributor's boom.

[0003] Patent Document 1 proposes a concrete pouring device in which a concrete hose is held by a horizontal boom that is rotatably arranged on the post of a tower crane, and concrete is discharged to the pouring position through a distributor attached to the tip of the concrete hose. This concrete pouring device is equipped with a trolley that holds the discharge end of the concrete hose so that it can be raised and lowered and that can run along the horizontal boom, a pulley that is supported so that it can run along a weight beam attached to the opposite side of the horizontal boom and that suspends the middle part of the hose, and a slack-removing balance weight that moves the pulley to tension the hose along the boom according to the traveling position of the trolley. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 63-142157 Summary of the Invention [Problem to be solved by the invention]

[0005] The concrete pouring device described in Patent Document 1 requires a tower crane to which a distributor is attached. Conventional concrete pouring equipment equipped with a distributor includes mast-type pouring equipment, which has a rotatable distributor mounted above a dedicated tower crane (mast) as described in Patent Document 1, and floor-mounted pouring equipment, which has a rotatable distributor installed on the floor.

[0006] When mast-type concrete pouring equipment is planned for the perimeter of the building to be constructed, space is required to install the mast, which cannot be adopted in cases where sufficient space is not available, such as construction sites in urban areas. On the other hand, when a tower crane for transporting materials is planned for the interior of the building to be constructed, there is a concern that the boom of this tower crane and the boom of the distributor that makes up the concrete pouring equipment may interfere with each other. Furthermore, with mast-type concrete pouring equipment, it is difficult to pour concrete near the base of the mast, which may require separate concrete pouring near the mast.

[0007] On the other hand, with floor-mounted concrete pouring equipment, it is difficult to pour concrete into areas that are hidden by pillars or walls, for example, because the distributor boom cannot reach those areas.Furthermore, with floor-mounted concrete pouring equipment, a reaction force receiving member must be installed on the floor to receive the reaction force acting from the legs that support the swivel device on which the distributor is mounted.This means that concrete pouring on the floor in the area where the reaction force receiving member is installed must be performed separately from concrete pouring in other areas, which creates the issue of increased work effort due to the installation of the reaction force receiving member on the floor.

[0008] As such, conventional mast-type concrete pouring equipment with distributors and floor-standing concrete pouring equipment each have their own unique issues, so there is a need for concrete pouring equipment and pouring methods that can resolve these issues.

[0009] The present invention has been made in consideration of the above-mentioned problems, and aims to provide concrete pouring equipment and a concrete pouring method that can be applied to narrow construction sites, minimizes interference with other tower cranes, etc., and enables concrete to be poured over the entire area of ​​the building being constructed. [Means for solving the problem]

[0010] In order to achieve the above object, one aspect of the concrete pouring equipment according to the present invention is: A concrete pouring facility at a construction site, This system is characterized in that the distributor is installed via a mounting frame above a permanent pillar that is either in the process of being constructed or has already been constructed.

[0011] According to this aspect, the distributor is installed via a mounting frame above a permanent column that is currently being constructed or has already been constructed. This allows concrete to be poured throughout the entire building, eliminating the need for a dedicated mast for the distributor. This allows the distributor to be installed even on narrow construction sites in urban areas where there is no space for a dedicated mast. Furthermore, even though this is a mast-type concrete pouring system, the permanent column serves as the support member for the distributor, so concrete pouring for the column is already completed. Therefore, there is no risk of difficulty pouring concrete at the base of the dedicated mast. Furthermore, if a transport tower crane is present, the tower crane is installed away from the permanent column, thereby reducing or preventing interference between the distributor installed on the permanent column and the tower crane. Furthermore, because this system is not a floor-mounted concrete pouring system, the various issues inherent to floor-mounted concrete pouring systems are eliminated.

[0012] Here, "permanent columns under construction" refers to permanent columns being constructed on any floor below the n-1th floor in an n-story building during construction, while "permanent columns that have been constructed" refers to permanent columns on the top floor (for example, the roof floor).

[0013] In another aspect of the concrete pouring equipment according to the present invention, The mounting frame is a fixing bar fixed to a side surface of the pillar; a plurality of vertical bars supported by the fixed bars and erected upward; The fixing bar is fixed to the pillar with a bolt.

[0014] According to this aspect, the mounting frame is formed by a fixed bar fixed to a pillar and a plurality of vertical bars supported by the fixed bar and extending upward. This provides a mounting frame that is as simple in configuration and as lightweight as possible, while being rigid enough to support at least a distributor. This provides excellent transportability and installation. For example, a frame-shaped fixed bar is fixed to each side of a permanent pillar having a rectangular (square or oblong) cross section, surrounding the four sides. Four vertical bars extend from the four corners of the frame-shaped fixed bar. At least the upper portions of the four vertical bars are interconnected by frame-shaped horizontal bars, forming a mounting frame consisting of a rectangular parallelepiped framework. Here, the fixed bars and vertical bars can be made of shaped steel materials such as angle irons, channel steels, and H-shaped steel beams, including small-diameter steel pipes and square pipes. Furthermore, bolts are used to fasten the fixed bar to the pillar, further improving the ease of installation of the mounting frame to the pillar.

[0015] In another aspect of the concrete pouring equipment according to the present invention, The mounting frame is a fixing bar fixed to a side surface of the pillar; a plurality of vertical bars supported by the fixed bars and erected upward; A pair of the fixed bars arranged around the pillar are connected by a tension member that passes through the pillar, thereby fixing the fixed bars to the pillar.

[0016] According to this aspect, a pair of fixing bars arranged around the pillar are connected by a tension member that penetrates the pillar, thereby fixing the fixing bars to the pillar, and thereby the mounting frame can be tightly fastened to the pillar. Here, for a pillar with a rectangular cross section, a configuration in which one pair of fixing bars out of two pairs of fixing bars arranged on each side of the pillar is tensioned by a tension member, or a configuration in which both pairs of fixing bars are tensioned by a tension member as necessary, is also applicable.

[0017] In another aspect of the concrete pouring equipment according to the present invention, The mounting frame is characterized by further comprising horizontal or diagonal connecting members that connect the plurality of vertical beams.

[0018] According to this aspect, the mounting frame further includes horizontal ties or diagonal ties that connect the vertical beams, thereby increasing the rigidity of the mounting frame without significantly increasing the weight of the entire mounting frame. The horizontal ties and diagonal ties may be used either alone or together, and an example of this is a configuration in which these ties are assembled in a truss shape.

[0019] In another aspect of the concrete pouring equipment according to the present invention, the mounting frame comprises a tower body; The tower body is fixed to the top surface of the column by anchor bolts.

[0020] According to this embodiment, the mounting frame is a tower body that is fixed to the top surface of the column, so that the mounting frame (tower body) can be contained within the cross section of the column when viewed in plan, and the mounting frame does not protrude to the side of the column, making it possible to form a pouring facility that is as slim as possible with an even simpler configuration.

[0021] In another aspect of the concrete pouring equipment according to the present invention, The permanent pillar is characterized in that it is constructed by pouring concrete at a construction site.

[0022] According to this aspect, a casting equipment can be formed in which a general permanent pillar cast on site is used as a support member for the distributor, resulting in a versatile casting equipment that can be applied to a variety of construction sites.

[0023] In another aspect of the concrete pouring equipment according to the present invention, The permanent columns are characterized by being PCa columns made of precast concrete.

[0024] According to this aspect, even at construction sites where PCa columns are used, by forming a pouring facility that uses PCa columns as support members for the distributor, workability can be further improved in conjunction with the use of PCa columns.

[0025] Further, one aspect of the concrete pouring method according to the present invention is A method for pouring concrete at a construction site, comprising: an installation process in which a distributor is installed via a mounting frame above a permanent column that is currently being constructed or has already been constructed; The method is characterized by having a pouring process in which concrete is pumped from a concrete pump to the pipes and hoses provided in the distributor and the concrete is poured.

[0026] According to this aspect, by installing the distributor via a mounting frame above a permanent pillar that is in the process of being constructed or has already been constructed, and using this distributor to pour concrete, a dedicated mast for the distributor is not required, and pouring concrete at the base of the dedicated mast is also not required, which significantly improves construction efficiency. Furthermore, if a transport tower crane is present, the tower crane is installed at a position away from the permanent pillar, which reduces or prevents interference between the distributor installed on the permanent pillar and the tower crane, improving construction safety. [Effects of the Invention]

[0027] As can be understood from the above explanation, the concrete pouring equipment and pouring method of the present invention can be applied to narrow construction sites, interference with other tower cranes, etc. is suppressed, and concrete can be poured throughout the entire building to be constructed. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a diagram illustrating a concrete pouring facility and a concrete pouring method according to an embodiment. FIG. [Figure 2] FIG. 1 is a perspective view showing an example of a mounting base. [Figure 3] FIG. 10 is a perspective view showing another example of the mounting base. [Figure 4] FIG. 10 is a perspective view showing yet another example of a mounting frame fixed to the top end surface of a permanent pillar. DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, an example of a concrete pouring system and a concrete pouring method according to an embodiment will be described with reference to the accompanying drawings. Note that in this specification and the drawings, substantially identical components may be designated by the same reference numerals to avoid redundant description.

[0030] [Concrete pouring equipment and pouring method according to the embodiment] An example of a concrete pouring equipment and a concrete pouring method according to an embodiment will be described with reference to Figures 1 to 4. Here, Figure 1 is a diagram illustrating a concrete pouring equipment and a concrete pouring method according to an embodiment. Also, Figures 2 and 3 are both perspective views showing an example of a mounting frame, and Figure 4 is a perspective view showing yet another example of a mounting frame fixed to the top surface of a permanent column.

[0031] Figure 1 shows a situation where a multi-story reinforced concrete or steel-reinforced concrete building (such as a building, apartment building, logistics facility, or amusement facility) has been constructed up to an arbitrary floor, and the floors above that are under construction.

[0032] A slab 15, which is the ceiling slab for the lower floor and also the floor slab for the upper floor, is constructed on top of a permanent concrete column 10B on the lower floor, and a permanent concrete column 10A is constructed on top of the slab 15, with multiple main column reinforcements 13 protruding upward from the top surface 12 of the permanent column 10A.

[0033] Here, the permanent pillar 10 may be a pillar that has been constructed by pouring concrete at the construction site, a PCa pillar made of precast concrete, or a steel pillar. The pillar 10A on which the distributor 70 is installed includes not only pillars 10 under construction on floors below the top floor, but also pillars (already constructed pillars) on the top floor such as the roof floor.

[0034] The concrete pouring equipment 100 is formed by using a permanent pillar 10 as a support (or support member, mast) and installing a distributor 70 above the permanent pillar 10 via a mounting frame 20.

[0035] The distributor 70 includes a swivel mechanism 30 fixed to the mounting base 20, an articulated arm 40 supported by the swivel mechanism 30, and a pressure pipe fixed to the articulated arm 40.

[0036] The turning mechanism 30 incorporates an actuator such as a hydraulic motor (not shown), and rotates in the X1 direction within a horizontal plane.

[0037] The articulated arm 40 is formed by a plurality of (four in the illustrated example) arms 40A, 40B, 40C, and 40D attached via rotation shafts 42 so as to be rotatable relative to one another in the X2 direction within a vertical plane.

[0038] The pressure pipe 50 has a main pipe 51 (an example of piping) fixed to each arm 40A, 40B, 40C, 40D via a fixing jig 54, a flexible pipe 52 (an example of piping) that connects the main pipes 51 to each other near the pivot axis 42, and a tip hose 53 (an example of a hose) that hangs down from the tip arm 40D and discharges concrete.

[0039] A pressure pipe 50 connected to a concrete supply means such as a concrete pump (not shown) passes through the inside of the mounting frame 20 and is fixed below the articulated arm 40. When the concrete supply means is driven, the concrete is pressure-fed vertically upward in the X3 direction, and then pressure-fed in the X4 direction to the main pipe 51 below the articulated arm 40, where it flows through the tip hose 53 and is discharged from the tip of the pipe.

[0040] The distributor 70 has a base 60 that projects out on the opposite side to the articulated arm 40, and a counterweight 61 and a control panel 62 are placed on the base 60.

[0041] The counterweight 61 has the effect of eliminating the eccentric moment caused by the weight of the articulated arm 40. Here, if the rigidity of the mounting base 20 or the like is sufficient to resist the eccentric moment, the counterweight 61 may be omitted.

[0042] The control panel 62 controls the rotation and stopping of the rotation mechanism 30 and the operation and stopping of the articulated arm 40 by remote control by an operator (not shown).

[0043] The control panel 62 is composed of a computer, and has a CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory), a wireless communication device, a display device, an input device, etc., which are connected via a system bus so that data can be communicated. The ROM stores various programs and data used by the programs. The RAM is used as a storage area for loading the programs stored in the ROM, and as a work area for the loaded programs. For example, if there is a tower crane or the like in the construction area that needs to transport materials and equipment, the position of the tower crane or the like is input (stored), If there is a risk of interference with a tower crane or the like while the articulated arm 40 is in operation, safety measures are taken such as automatically stopping the operation of the articulated arm 40 or sounding an alarm.

[0044] Fig. 2 is an enlarged view of the mounting frame 20 shown in Fig. 1. The mounting frame 20 has four vertical beams 22 arranged at the corners of a rectangular parallelepiped permanent pillar 10A, fixed beams 21 that horizontally connect the lower ends of the vertical beams 22, upper horizontal beams 26 that horizontally connect the upper ends of the vertical beams 22, horizontal connectors 23 and 24 that horizontally connect the middles of the vertical beams 22, and diagonal connectors 27 that connect the vertical beams diagonally.

[0045] The components that make up the mounting frame 20 are made of shaped steel materials such as angle irons and channel steels, square pipes, etc., and are joined together by bolts or welding to form the three-dimensional frame-like mounting frame 20. Furthermore, the horizontal connecting members 23 are made of angle irons, and the horizontal connecting members 24 are made of steel rods, and the steel rods 24 are connected to steel rod holders 25 fixed to the vertical beams 22.

[0046] Above the mounting base 20, an installation base 28 is provided on which the rotation mechanism 30 of the distributor 70 is installed.

[0047] In the mounting frame 20, multiple (three in the illustrated example) bolt holes 21a are opened in the fixed beam 21, which is the lower horizontal beam, and when the mounting frame 20 is installed above the pillar 10A as shown in Figure 1, each fixed beam 21 abuts against the side surface 11 of the pillar 10A, and the bolt 29A is screwed (or driven) into the pillar 10A through the bolt hole 21a, thereby attaching the mounting frame 20 to the pillar 10A.

[0048] Here, the illustrated example shows a form in which all four fixing bars 21 corresponding to the four side surfaces 11 of the pillar 10 are fixed to the pillar 10 via bolts 29A, but if stable support of the distributor 70 can be ensured by fixing only one pair of fixing bars 21 out of the two pairs, fixing the other pair of fixing bars 21 to the pillar 10 may be omitted.

[0049] 1 and 2, the mounting base 20 is constructed by assembling a plurality of crosspieces into a three-dimensional frame, and therefore has as simple a configuration as possible, is as lightweight as possible, and is an mounting base that is excellent in transportability and installation. Furthermore, since the plurality of vertical crosspieces 22 are connected by horizontal ties 23, 24 and diagonal ties 27, the rigidity of the mounting base 20 is effectively increased without significantly increasing the overall weight of the mounting base 20. Furthermore, since the fixing crosspieces 21 are fixed to the pillar 10 by bolts, the mounting base 20 can be installed more easily on the pillar 10.

[0050] On the other hand, a mounting frame 20A shown in FIG. 3 differs from the mounting frame 20 in that the fixing means to the column 10 is a tendon instead of a bolt.

[0051] In the illustrated example, a pair of fixing bars 21 have tension member holes 21b at corresponding positions through which PC steel rods 29B, which serve as tension members, are inserted.The PC steel rods 29B are inserted into the two opposing tension member holes 21b, and the tension introduced into the PC steel rods 29B is maintained by the fixing plate 29C, thereby fastening the mounting frame 20A to the column 10.

[0052] Here, if necessary, tension from the PC steel rod 29B may also be applied to the other pair of fixing bars 21 on which the PC steel rod 29B is not provided.

[0053] On the other hand, the mounting base 20B shown in FIG. 4 is completely different from the mounting bases 20 and 20A, and is formed by a tower body 81 having a base plate 82 at the lower end.

[0054] The tower body 81 is formed of, for example, a square steel pipe, and the installation frame 28 is installed at the upper end of the square steel pipe. Here, the tower body may be formed of shaped steel material such as an H-shaped steel.

[0055] A base plate 82, which is rectangular in plan view, is placed on the center of the top surface 12 of the column 10 (at a position that does not interfere with the surrounding column main reinforcement bars 13), and the mounting frame 20B is fixed to the top surface 12 of the column 10 by anchor bolts 83 that are driven into the column 10 from each corner of the base plate 82.

[0056] As is clear from Figure 4, the mounting base 20B is a tower body 81 that is fixed to the top surface 12 of the column 10, so that the mounting base 20B can be contained within the cross section of the column 10 when viewed in plan, and the mounting base 20B does not protrude to the side of the column 10, making it possible to form a pouring facility that is as slim as possible with an even simpler configuration.

[0057] According to the concrete pouring equipment 100, the distributor 70 is installed above the permanent concrete pillar 10 that is in the process of being constructed or has already been constructed via the mounting frames 20, 20A, 20B, which allows concrete to be poured throughout the entire building being constructed. This eliminates the need for a dedicated mast for the distributor 70, making it possible to install the distributor 70 even in narrow construction sites in urban areas where there is no space to install a dedicated mast.

[0058] Furthermore, although it is a mast-type concrete pouring facility, the permanent concrete pillar 10 serves as a support member for the distributor 70, so the concrete pouring of the pillar 10 is already completed, and therefore there is no risk of it being difficult to pour concrete at the base of the dedicated mast.

[0059] Furthermore, if a tower crane for transportation is present, the tower crane is installed at a position away from the permanent pillar 10, thereby suppressing or preventing interference between the distributor 70 installed on the permanent pillar 10 and the tower crane, and interference prevention control by the control panel 62 can further improve construction safety.

[0060] The concrete pouring method according to the embodiment includes the following steps.

[0061] In the installation process, the distributor 70 is installed above the permanent concrete pillar 10, which is in the process of being constructed or has already been constructed, via the mounting stands 20, 20A, and 20B.

[0062] In the casting process, concrete is pumped from a concrete pump (not shown) to the pressure pipe 50 provided in the distributor 70, and the concrete is cast through the tip hose 53.

[0063] According to the concrete pouring method, concrete is poured using a distributor 70 installed on a permanent pillar 10, which eliminates the installation work required to install a dedicated mast on the distributor 70 and the need to pour concrete separately at the mast installation location. This also eliminates the construction work required for workers to move and extend pipes and hoses when pouring concrete, allowing for efficient concrete pouring over a wide area.

[0064] The present invention is not limited to the configurations shown here, and other embodiments may be possible in which other components are combined with the configurations described in the above embodiments. In this regard, modifications are possible without departing from the spirit of the present invention, and can be appropriately determined depending on the application form. For example, the means for fixing the mounting racks 20, 20A, and 20B to the column 10 in the illustrated example are bolts (including anchor bolts) and tension members, but other methods such as welding may also be used. [Explanation of symbols]

[0065] 10: Permanent pillar (pillar) 10A: Upper floor pillar (permanent pillar, pillar) 10B: Lower floor pillar (permanent pillar) 11: Side 12: Top surface 13:Column main reinforcement 15: Slab 20, 20A, 20B: Mounting stand 21: Fixed crosspiece (lower crosspiece) 21a: Bolt hole 21b: Tensor hole 22: Vertical bars 23: Horizontal tie 24: Steel rod (horizontal connecting member) 25: Steel rod holder 26: Upper horizontal bar 27: Diagonal joint 28: Installation stand 29A: Bolt 29B: PC steel bar (tension material) 29C: Fixing plate 30: Swivel mechanism 40 articulated arm 40A, 40B, 40C, 40D: Arm 42: Rotating axis 50: Pressure pipe 51: Main pipe (piping) 52: Flexible pipe (piping) 53: Tip hose (hose) 54: Fixture 60: Stand 61: Counterweight 62: Control panel 70: Distributor 81: Tower body 82: Base plate 83: Anchor bolt 100: Pouring equipment (concrete pouring equipment)

Claims

1. A concrete pouring facility at a construction site, The distributor is installed via a mounting frame above a permanent pillar that is currently being constructed or has already been constructed. The mounting frame is a fixing bar fixed to a side surface of the pillar; a plurality of vertical bars supported by the fixed bars and erected upward; A concrete pouring facility characterized in that the fixing bars are fixed to the columns by bolts.

2. A concrete pouring facility at a construction site, The distributor is installed via a mounting frame above a permanent pillar that is currently being constructed or has already been constructed. The mounting frame is a fixing bar fixed to a side surface of the pillar; a plurality of vertical bars supported by the fixed bars and erected upward; A concrete pouring facility characterized in that a pair of the fixing bars arranged around the pillar are connected by a tension member that passes through the pillar, thereby fixing the fixing bars to the pillar.

3. 3. The concrete pouring equipment according to claim 1, wherein the mounting frame further comprises horizontal or diagonal ties that connect the plurality of vertical beams.

4. 4. The concrete pouring equipment according to claim 1, wherein the permanent pillar is a pillar constructed by pouring concrete at a construction site.

5. The concrete pouring equipment according to any one of claims 1 to 3, characterized in that the permanent columns are PCa columns made of precast concrete.

6. A method for pouring concrete at a construction site, comprising: an installation process in which a distributor is installed via a mounting frame above a permanent column that is currently being constructed or has already been constructed; A concrete pouring process is provided in which concrete is pumped from a concrete pump to a pipe and a hose provided in the distributor, and the concrete is poured. The mounting frame is a fixing bar fixed to a side surface of the pillar; a plurality of vertical bars supported by the fixed bars and erected upward; A method for pouring concrete, characterized in that the fixing bars are fixed to the columns with bolts.

7. A method for pouring concrete at a construction site, comprising: an installation process in which a distributor is installed via a mounting frame above a permanent column that is currently being constructed or has already been constructed; A concrete pouring process is provided in which concrete is pumped from a concrete pump to a pipe and a hose provided in the distributor, and the concrete is poured. The mounting frame is a fixing bar fixed to a side surface of the pillar; a plurality of vertical bars supported by the fixed bars and erected upward; A method of pouring concrete, characterized in that a pair of the fixing bars are arranged around the column, and the fixing bars are fixed to the column by connecting the pair of fixing bars with a tension member that passes through the column.

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