JPH0520835Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to concrete pouring equipment.

The conventional separate boom type concrete placing equipment shown in Fig. 7 is an optimal equipment when there are no obstructions above the pouring location.
Because it rotates on the ground and tilts up and down, it cannot be used in structures that have been constructed with steel frames in advance.

In addition, in the conventional horizontal bending boom type concrete placing device shown in Fig. 8, the base end of the boom c is cantilever-supported by the steel column d of the structure, and the boom c is horizontally placed to avoid other steel columns e. Because it is refracted,
Since the boom c has to withstand bending force and torsional stress at the same time, it has the problem of being large and heavy.

In addition, as shown in Fig. 9, a method in which a concrete transport pipe f for transporting fresh concrete from a concrete pump truck g to a concrete pouring point is laid in advance in a structure h is a method in which the concrete is There is a problem in that the transport pipe f must be re-laid, which requires a great deal of labor and time.

In addition, as shown in Figure 10, a rubber hose k extends from the tip of the boom j of the concrete pump truck i.
If concrete is to be poured by hand, the concrete can only be poured in the vicinity of the concrete pump truck i, and several workers l are required to hold the rubber hose k.

The present invention was proposed to address the above-mentioned problems, and its purpose is to easily and quickly repair every corner of an already erected steel structure, including areas that will be in the shadow of columns. The purpose of the present invention is to provide a compact, lightweight, and inexpensive concrete pouring device that is capable of pouring concrete.

The present invention is characterized in that a concrete placing device includes a drum that winds up or lets out a concrete pressure-feeding hose, and an extendable boom that rotatably supports the drum and further guides the concrete pressure-feeding hose. The main body provided,
A base plate that rotatably supports the main body, and a rotary joint in the middle, passing through the center of the drum and connecting the upper end to the proximal end of a concrete pumping hose and the lower end to a flexible concrete supply hose. established S
The present invention consists in that the entire device is constructed so as to be able to be lifted as one unit.

Since the present invention has the above-mentioned configuration, the concrete pouring equipment can be lifted up by a crane and moved easily, and can therefore be used even in places that are shaded by steel columns etc. even in already constructed structures. It can be poured over a wide range of corners. In addition, it is structurally light and compact, can be manufactured at low cost, and is easy to operate, requiring fewer operators. Furthermore, when moving, only the minimum number of piping changes is necessary, and concrete pouring can be continued even during the move, making it possible to complete the pouring process quickly.

Hereinafter, the present invention will be specifically explained with reference to an embodiment shown in FIGS. 1 to 5.

In FIGS. 1 to 5, reference numeral 1 denotes a drum for winding up or unwinding a concrete pressure-feeding hose 2, and is fixedly attached to a main body 3 through a bearing 12 around a vertical axis. 5 is fixed to the main body 3 by a boom case, and the booms 5a and 5b are extended as shown in the figure by extending the cylinder 6.
By shortening the cylinder 6, it is stored in the boom case 5. The main body 3 is supported by a donut-shaped base plate 8 via a swing bearing 7 so as to be rotatable about a vertical axis, and is rotated about the vertical axis by driving a swing motor 9.

The concrete pressure feeding hose 2 let out from the drum 1 is supported on rollers 16 which are pivotally supported by the booms 5a and 5b, and is guided by a guide 17 rotatably supported at the tip of the boom 5b to pour concrete. It extends to the installation site. The base end of the hose 2 wound around the drum 1 is connected to an S-type transport pipe 15 made of steel and equipped with a rotary joint 14 in the middle, and this S-type transport pipe 15 is made of a flexible material such as rubber. It is connected to a transport pipe 19 installed in the structure via a hose 13 consisting of. 18 is a power unit for driving the cylinder 6, the swing motor 9, etc.; 20;
is a hanging tool for lifting the main body 3 and the base plate 8 together.

FIG. 3 shows a state in which the hose 2 is wound around the drum 1. As shown in the figure, booms 5a and 5b
When contracted, the drum 1 rotates, and the concrete transportation hose 2 is wound around the drum 1. An S-type transport pipe 15 including a rotary joint 14 passes through the center of the drum 1. One end of the S-type transport pipe 15 is wound around the drum 1 and connected to the hose 2 that is fed out, and the other end is connected to the outside of the base plate 8. It is connected to a hose 13 connected to.

FIG. 4 shows details of the bearing 12 mounting portion. In the figure, the inner ring 12c of the bearing 12 is connected to the boom case 5.
(integrated structure with main body 3) with bolts 30,
The outer ring 12b is fixed to the drum 1 with bolts 31, and the inner ring and outer ring are rotatable by bearings 12a.

FIG. 5 shows details of the bearing 7 mounting portion. In the figure, the inner ring 7c of the bearing 7 is attached to the top of the frame 8 by the bolt 3.
2, and the outer ring 7b is fixed to the main body 3 by bolts 33.
The inner ring 7c and the outer ring 7b can rotate relative to each other at the bearing 7a.

The fresh concrete pumped from a concrete pump (not shown) passes through a transport pipe 19, a flexible hose 13, an S-type transport pipe 15, and a concrete pressure transport hose 2, and is transferred from the tip of the hose 2 to the concrete pouring point. is discharged. 6th
If this device is installed at location I at a pouring site as shown in the figure, within range a, the expansion and contraction of booms 5a and 5b, the rotation of take-up drum 1, and the swing around swing bearing 7 can be performed independently. Alternatively, it can be placed in combination. If there is a place that is shaded by an obstacle such as a pillar 24 of a structure, or if it is necessary to cast in area a or a, this device can be used with the existing traveling crane or crane used for constructing the structure. Using a lifting sling 20 with a various type of crane such as a tower crane, move to the position or and place within the ranges a and a. At this time, since the flexible hose 13 can be lifted up and moved together with the device, it is sufficient to change the minimum amount of piping when moving the device. Furthermore, since it is lifted up and moved together with the main unit, there is no risk of bending or damaging the reinforcement of the structure. After this device is moved, it is lowered onto the floor, but since the base plate 8 has a donut shape centered around the pivot axis of the main body 3, it can be placed not only on smooth floors but also on floors with reinforced reinforcement. In addition, even if the booms 5a and 5b are extended and rotated, stable placement is possible. Since this device can be structurally small and lightweight, it is inexpensive and can be operated by one operator, including lifting and moving the device and pouring.

Note that if a structure has already been assembled and there is a beam above it, it cannot be moved using a tower crane, so the device of the present invention will be moved using a traveling crane that is used for building steel structures. Structures without obstacles such as beams above can be moved using tower cranes, etc.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is a front view of the concrete pressure hose in an extended state, Figure 2 is a plan view of the main part of Figure 1, and Figure 3 Fig. 4 is a side sectional view of the bearing portion that supports the drum, Fig. 5 is a side sectional view of the bearing portion that supports the main body, and Fig. 6 is a drawing similar to Fig. 1 with the hose wound around the drum. The figure is an explanatory diagram of the pouring procedure. Fig. 7 is a front view of a conventional separate boom type concrete placing device, Fig. 8 is a perspective view of a conventional horizontal bending type concrete placing device, and Fig. 9 is a perspective view showing the installation status of a conventional concrete transport pipe. , FIG. 10 is a front view showing the procedure for directly pouring concrete from a conventional concrete pump truck. 1...Drum, 2...Hose for pumping concrete, 3...Main body, 5a, 5b...Boom, 8...
Base plate, 13...Flexible hose, 14...Rotary joint, 15...S type transport pipe, 20... Hanging tool.

Claims (1)

[Scope of utility model registration request] A drum for winding up or unwinding a concrete pressure-feeding hose, rotatably supporting the drum,
Furthermore, a main body provided with an extendable boom that guides the concrete pumping hose, a base plate that rotatably supports the main body, and an upper end that passes through the center of the drum and is connected to the base end of the concrete pumping hose. A concrete placing device comprising an S-shaped transport pipe whose lower end is connected to a flexible hose for supplying concrete and a rotary joint is provided in the middle part, and the entire device can be lifted as one unit.