JPH0480181B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in concrete distributors.

Generally speaking, a boom device for placing concrete is one in which a concrete placing hose c is provided at the tip of a plurality of booms b each having a bending joint a in the vertical direction, as shown in Fig. 1, or a part thereof. An overwhelming majority of them are sliding type.

In this case, it can be used very conveniently and effectively when there are no obstructions such as structures above the boom operation area, such as during civil engineering or foundation work, but when it is on the ceiling or above, such as in steel reinforced concrete buildings, , it was difficult to use.

In order to compensate for these drawbacks, a boom device has been proposed that is provided with a joint that bends mainly in the horizontal direction, as shown in Figure 2. Concrete pouring is carried out, and it is completely possible to pour concrete in high and low places. Further, in this case, an auxiliary column and an auxiliary stand are required to erect the device, and a large crane is required for relocation.

The present invention was proposed in order to eliminate the above-mentioned drawbacks, and includes a refracting type boom formed by connecting a plurality of booms in a manner that they can be bent in the same plane, and a refracting type boom that is horizontally rotatably attached to a frame. a swivel base interposed between the vicinity of the base of the refracting boom and the swivel base, and the refracting boom is mounted on the swivel base in a plane perpendicular to a plane in the bending direction within the same plane of the boom. This invention relates to a concrete distributor characterized in that it is provided with a rotating means rotatably attached to the concrete distributor.

A concrete distributor according to the present invention is configured such that a refracting boom, which is formed by connecting a plurality of booms in a manner that they can be refracted in the same plane, can be switched and rotated from a vertical direction to a horizontal direction at a base or a portion near the base. Therefore, when constructing reinforced concrete buildings, etc., the bendable booms are rotated to a position where each of the booms can be bent vertically, and concrete is placed in high places, low places, or narrow places. In addition, in the case of a steel-framed reinforced concrete building or when there is an obstacle above, the bendable boom can be rotated 90 degrees from the above-mentioned position so that each boom can be bent horizontally to facilitate concrete pouring. I can do it.

As described above, according to the present invention, by making the retractable boom rotatable from the vertical direction to the horizontal direction at its base or a portion near the base, a set of retractable booms can be used to construct reinforced concrete or steel reinforced concrete structures. , can be effectively used for a wide range of concrete placement.

By installing the concrete distributor of the present invention on a support and having a self-climbing device, it can be used for any type of construction work without the need for a special support device, resulting in labor savings in concrete pouring work. Efficiency can be improved.

The present invention will be described below with reference to the illustrated embodiments.

In FIGS. 3 and 4, reference numeral 1 denotes a pedestal, which is a pedestal with a chassis in the case of a vehicle-mounted type, and a platform with a support in the case of a separate boom. Reference numeral 2 denotes a turning stand disposed on the stand 1, and is adapted to be rotated in the horizontal direction by a turning motor 3 mounted on the stand 1.

Reference numeral 4 denotes a rotary table which is a rotating means provided on a middle frame 5 mounted on the rotary table 2, and is adapted to be rotated in the vertical direction by a rotation motor 6.

A plurality of booms having bending joints are attached to the tip of the rotary table 4, and a first boom 8, which is pivotally attached to an upper pedestal 7 projecting from the rotary table 4, is connected to a hydraulic cylinder 9 disposed between the two. From 0° to approximately 90~
Similarly, the second boom 10 rotates from 0 to 270 degrees by the hydraulic cylinder 11, and similarly the third boom 12 rotates from 0 to 270 degrees by the hydraulic cylinder 13.
Rotates 270°.

The concrete pouring pipe 14 is led from the bottom of the pedestal 1, is bent at 90 degrees in the middle pedestal 5, and on the way,
Rotary joints 15 and 16 are interposed so that each frame may rotate in the vertical and horizontal directions. The installation pipe 14 passes through the rotary table 4, is guided from the base end bearing part of the first boom 8 to the side surface of the boom, passes through the front end heads of the first and second booms 8 and 10, and leads to the first boom 8. It is arranged up to the tip of the boom 12 of No. 3.

At the tip of the third boom 12, a free rotation joint 17 connects the hose guide 15 and hose 16 so that they are always directed downward due to their gravity, regardless of the boom operating direction.

During general civil engineering work or concrete pouring in reinforced concrete construction, the turntable 4 is rotated to a position where each of the booms 8, 10, and 12 can be bent vertically, as shown in Figure 4, and placed in high or low places. , or placing concrete in narrow spaces.

In addition, in case of steel-framed reinforced concrete construction or when there is an obstacle at the top of the boom, rotate the turntable 4 by 90 degrees from the position shown in Figure 4, and rotate each boom 8, 10, 1
By changing the bending direction of 2 to the horizontal direction, concrete can be easily poured over a wide range of floor surfaces as shown in Fig. 3.

Also, if this is done, the swivel base 2, cylinder 9,
By appropriately controlling 11 and 13, the tip of the boom can be moved horizontally in a straight line to automate pouring into walls, and by weaving the tip of the boom, it is possible to automatically place concrete on the floor. This allows for even and uniform pouring.

FIGS. 5 and 6 show another embodiment of the present invention, in which the pedestal 7 is bent by 90 degrees with respect to the bracket 18 erected on the swivel base 2 as the rotating means. Therefore, it is necessary to make the concrete pouring pipe 14 flexible. According to this embodiment, the same effects as those of the above-mentioned embodiment can be expected, but the above-mentioned embodiment is more convenient because it can be set at any angle even when pouring concrete on slopes, tunnels, or slopes. In the drawings, parts equivalent to those of the above embodiment are given the same reference numerals.

FIG. 7 and FIG. 8 show still another embodiment of the present invention, and as the rotating means, the first boom is divided into a rear boom 8a and a front boom 8b, and the part boom 8b to boom 10,1
In this case, it is necessary to provide flexibility to the concrete pouring pipe attached to the first boom. In this case, when performing automatic control, it is necessary to switch the control mode for the swivel base 2 and the cylinder 9 depending on whether it is used horizontally or vertically. In the drawings, parts equivalent to those of each of the embodiments described above are designated by the same reference numerals.

The illustrated embodiment is constructed as described above so that a set of The boom device can be effectively used for a wide range of concrete pouring such as reinforced concrete or steel reinforced concrete structures.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Fig. 1 is a side view showing an example of a conventional concrete distributor, Fig. 2 is a plan view showing another embodiment of the conventional concrete distributor, and Figs. 3 and 4 are respectively related to the present invention. FIGS. 5 and 6 are perspective views showing how one embodiment of the concrete distributor is used, and FIGS. 7 and 6 are perspective views showing how other embodiments of the concrete distributor are used, respectively. FIG. 8 is a perspective view showing a usage state of still another embodiment of the concrete distributor according to the present invention. 2...Swivel base, 4...Rotary base, 8, 10, 12
...Boom, 9,11,13...Hydraulic cylinder,
18... Bracket, 8a... Rear boom, 8b
...Front boom.

Claims (1)

[Claims] 1. A retractable boom formed by connecting a plurality of booms so that they can be bent in the same plane, a swivel base that is horizontally rotatably attached to a pedestal, and a structure that connects the vicinity of the base of the retractable boom and the swivel base. A concrete disk characterized by comprising: a rotating means interposed between the bending type boom and rotatably mounting the bending type boom on the swivel table in a plane perpendicular to a plane in the bending direction within the same plane of the boom. triviewer.