JPH055364A - Concrete placing equipment - Google Patents

Abstract

PURPOSE:To enable concrete to be placed by directing concrete placing hoses toward required sections, to be freely swung on a floor surface. CONSTITUTION:On movable tables 4 to be freely moved on a floor surface with concrete to be placed on, a plurality of hose bearing devices 2, 2... having the retaining sections 5 of concrete placing hoses 3 are arranged. The devices are connected to each other to be bent to be swung within a horizontal plane, and between the left and right sections of the devices, telescopic members 25, 25 to be telescopically moved by remote operation are connected to each other. By moving the telescopic members telescopically and selectively, the hose bearing devices 2, 2... are swung in the arbitrary direction within a horizontal surface, and the tips 3a of the concrete placing hoses 3 to be supported on the devices are directed to concrete placing sections.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete pouring device for moving concrete on a floor surface before pouring concrete, for example, on slab reinforcement to perform concrete pouring.

[0002]

2. Description of the Related Art In the case of placing concrete on a wide floor surface in building construction, etc., a reinforcing bar is placed on a concrete slab, and concrete is placed on the reinforcing bar to level the concrete surface. Has been done.

Conventionally, concrete is placed after the reinforcement, mainly depending on human power, and then flattened by a leveling machine or manually to form a flat concrete surface. Not only is the work efficiency low to rely on human labor for the work to be done, but also work on the bar arrangement is problematic in terms of safety.

Therefore, as a method of pouring the concrete by mechanical means, a base of a bending arm in which a plurality of arms are connected by joints so as to be bent in a horizontal plane is supported on a base, and this bending is performed. A flexible concrete pouring hose is arranged along the arm, and the bending arm is bent so that the tip of the concrete pouring hose is located at the required place on the floor surface. There is something that was designed to be done.

[0005]

However, according to the above-mentioned prior art, concrete can be placed at any desired location without being damaged by the reinforcement even on the floor with reinforcement. Since the bending arm is cantilevered, the supporting part at the base is loaded with the entire weight of the bending arm and the concrete placing hose attached to it, and the weight of concrete existing in this hose. The structure of the support part and the structure of the joint part of the bending arm must be made extremely strong, and there is a drawback that the entire device becomes large and heavy. Therefore, there is a problem that it is not easy to install the device and remove the work after the work is completed.

In view of this, the present invention can move the tip of the concrete pouring hose to a desired location by freely moving it even on the bar arrangement without damaging it.
The purpose of the present invention is to provide a concrete pouring device in which the entire device including the hose support structure is small and has a small strength.

[0007]

SUMMARY OF THE INVENTION In order to solve the problems of the above-mentioned conventional techniques, the present invention is to hold a concrete pouring hose on a movable base which is movable on the floor surface on which concrete is to be poured. A large number of hose support units each having a section are provided, the units are connected so as to be bent and swivel in a horizontal plane, and an elastic member that can be expanded and contracted by remote control is connected between the left and right parts of these units. It is characterized in that the unit is swung in any direction in a horizontal plane by expanding and contracting.

[0008]

[Operation] The concrete pouring hose is held by the hose holding portion of each hose support unit of the hose support unit row, the tip of the hose is projected from the tip of the hose support unit row, and then the hose support unit row is opened. The telescopic member on the right or left side of the portion to be bent and turned is shortened by remote control. At this time, if the right elastic member is shortened, the tip of the hose is swung to the right, and if the left elastic member is shortened, the hose is swung to the left. In addition, depending on the degree to which it is desired to swivel, a large swivel can be made by simultaneously operating a plurality of stretchable members, and the tip of the hose can swivel to the other side while swiveling in one direction, that is, the hose. It is also possible to bend and rotate the support unit row in a meandering manner, whereby the tip of the hose can be freely and quickly positioned at the concrete pouring location to perform concrete pouring work.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 4 shows a plan view of the overall construction of the concrete placing apparatus according to the present invention, and FIG. 5 shows the same side surface.
In FIG. 4, in order to make it easier to understand the motion, the straight line state and the bending and turning state are shown at the same time.

The concrete placing device 1 is composed of a plurality of hose supporting units 2, 2 ... Of the same structure which are connected to each other so as to be bent and swiveled in a horizontal plane, and the hoses for concrete placing are placed on these units 2, 2. It is designed to support 3.

The hose support unit 2 in the illustrated embodiment shows a case where the hose support unit 2 is made to slide on the slab bar arrangement. For convenience, FIG. 1 shows two planes, FIG. 2 shows the same side face, and FIG. As shown in the front view with the same portion in cross section, a pedestal 6 that supports the hose holding portion 5 is movably supported on the upper surface of the central portion of the sled-shaped movable base 4 whose circumference is bent upright. In this support structure, the movement range of the support pipe 7 erected at the center of the upper surface of the movable table 4 and the support pipe 8 vertically provided at the center of the lower surface of the pedestal 6 is defined by the pin 9 and the long hole 10. The pedestal 6 is elastically supported by constantly pressing the pedestal 6 upward by a compression spring 11 installed in the support pipe 7 on the movable table 4.

A hose holder 5 provided on the frame 6.
Has an upwardly U-shaped frame 12 that can receive the concrete pouring hose 3, and the projection 1 at the bottom of this frame 12
3, 13 are slidably engaged with and supported by sliding guides 14, 14 installed in a direction orthogonal to the hose 3 on the pedestal 6, and springs on the lower outer surface of the frame 12 and the end of the pedestal 6 are supported. Compression springs 16 and 16 are interposed between the bridges 15 and 15 so that the frame 12 is always positioned at the center position and the pulsation is absorbed when the hose 3 pulsates.

A roller 17 for receiving the lower surface of the hose 3 is provided in the lower portion of the frame 12, and the hose 3 is provided in the right and left sides of the frame 12.
The rollers 18, 18 for regulating the side surfaces of the pressing member 19 are axially supported, and one end of the pressing member 19 is openable and closable by one of the pins 20 at the open portion of the upper portion of the frame body 12. A roller 21 that regulates the upper surface of the hose 3 is pivotally supported on the lower surface side, and the hose 3 is inserted into the inside surrounded by these rollers 17, 18, 18, 21 as closely as possible. ing. The other end of the pressing member 19 is fixed to the frame 12 side by the other pin 20 'when the pressing member 19 is closed.

Connecting portions 22 and 23 are provided at the front and rear portions of the hose supporting unit 2, and can be bent and swung by inserting a connecting pin 24 into the connecting portions 22 and 23 of the hose supporting units 2 and 2. It is designed to be connected to.

Between the left and right parts of the hose support units 2 and 2, left and right expansion and contraction members 25 and 25 are connected at positions apart from the support pipe 8. As the elastic member 25, for example, as shown in FIG.
A tube 27 made of an expandable / contractible material such as rubber is connected between the tubes 27. The tube 27 is expanded by supplying pressurized air into the tube 27 so that the entire length thereof is shortened. A support portion 28 provided on the lower surface,
It is connected between 28. Therefore, each elastic member 25, 25
Is connected to pressure air supply / discharge pipes 29, 29, and these pipes 29, 29 are collectively led to the end of the hose support units 2, 2 ... Telescopic members 25, 25 desired by remote control
Is configured to selectively supply pressurized air from a source of pressurized air. The elastic member 25 is not limited to the rubber tube 27 and may have an air cylinder structure. In the figure, reference numeral 31 is a stopper that regulates the turning angle between the hose support units 2 and 2.

Next, the operation of the above embodiment will be described.

The concrete pouring hose 3 is dropped into the frame 12 of the hose holding portion 5 of each hose supporting unit 2, 2 ... Row of the hose supporting units 2, 2 to close the pressing member 19, and the hose 3 is moved up and down. Left and right rollers 17, 18, 1
8 and 21, and the tip 3a of the hose 3 is projected forward from the tip of the hose supporting units 2 and 2 as shown in FIGS. After setting in this way, fresh concrete is supplied through the hose 3, and concrete is poured from the tip of the hose 3 onto the slab reinforcement.
When moving the place of placing concrete, the rows of hose support units 2, 2 ... are bent and swung so that the tip 3a of the hose 3 is directed to the place of placing concrete.
That is, when compressed air is supplied by remote control to the right or left stretchable member 25 of the portion to be bent and swung, the stretchable member 25 expands and the length thereof shrinks as shown by the chain line in the upper part of FIG. The one end side of the front hose support unit 2 connected to this is pulled close to it, and the expanded and contracted member 25 expanded by this is bent and swung inside.
Therefore, the hose 3 can be shortened by shortening the right elastic member 25.
The tip end 3a turns to the right, and if the left elastic member 25 is shortened, it turns to the left. Further, it is possible to make a large turn by simultaneously operating the elastic members 25, 25 ... If the tip 3a of the hose 3 is swung to the other side while swiveling in one direction, the hose supporting units 2, 2 ... Rows can be bent and swung in a meandering manner as shown in FIG. it can.

At the time of each of the above-described bending turns, the movable bases 4, 4, ...
Moves smoothly because it slides on the slab reinforcement. Further, when the fresh concrete is pumped through the hose 3, the hose 3 pulsates, but against this pulsation, the frame body 12 of the hose holding portion 5 resists the springs 16 and 16 and slides along the sliding guides 14 and 14. This prevents the hose 3 from being absorbed and exerting an excessive force.

With these arrangements, the tip 3a of the hose 3 can be freely and quickly positioned at the concrete pouring location to perform concrete pouring work.

When a telescopic member 25 having a cylinder structure is used, it may be extended rather than shortened. Further, the structure of the hose holding portion 5 is not limited to the one using four rollers, and the design change of the configuration may be made such that the hose holding portion 5 is held by a piece having an inner peripheral surface of a semicircular shape which is divided into upper and lower parts. It is optional. Further, in the illustrated embodiment, the case where the movable table 4 has a sled shape has been shown, but when there is no bar arrangement, it may be structured to move by wheels. The shape and structure of other parts are not limited to the illustrated embodiment.

[0022]

As described above, according to the present invention, it is possible to move the supports for concrete placing hoses on the floor surface on which concrete is to be placed by bending and swiveling in a horizontal plane. The hose support unit is held in the hose holding unit, and the hose support unit row is bent and swung in a desired direction by selectively expanding and contracting the expansion and contraction member connected between the left and right side parts of these hose support units. Therefore, the tip of the concrete placing hose can be swiftly directed to any desired place, and the work efficiency of the concrete placing work can be greatly improved. Also, since this hose is supported by the hose support unit that is grounded on the slab reinforcement or on the floor,
The weight is distributed to each hose support unit so that the load is not concentrated and the bar arrangement is not damaged. Furthermore, since the weight of each hose support unit is small, the associated work such as installation, removal, and transportation thereof is extremely simple as compared with the conventional technique, and the construction period can be shortened. In addition, the size of the construction site can be dealt with only by changing the number of connected hose support units, and various effects such as versatility can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view showing two hose support units constituting a concrete pouring device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view in which a part of FIG. 1 is a cross section.

FIG. 4 is a plan view showing the overall structure of an embodiment of the concrete pouring device according to the present invention, and for convenience, shows a straight line state and a bending turn at the same time.

5 is a side view of FIG.

FIG. 6 is a side view showing an example of an elastic member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete placing device 2 Hose support unit 3 Concrete placing hose 4 Moving stand 5 Hose holding part 6 Frame 12 Frame body 14 Sliding guide 19 Pressing member 22 Connecting part 23 Connecting part 24 Connecting pin 25 Stretching member 30 Pressure air supply Emission control unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Okuda Inventor Kenji Okuda 8-21-1, Ginza Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72) Inventor Takeo Kawamura Ginza, Chuo-ku, Tokyo 8-21-1-1 Takenaka Corporation Tokyo Main Store (72) Inventor Kazuo Yamazaki 1293 Amadocho, Chiba-shi, Chiba Sanwa Equipment Co., Ltd. Chiba Factory

Claims (1)

Claim: What is claimed is: 1. A large number of hose support units having holding parts for concrete pouring hoses are provided on a movable table which is movable on the floor surface on which concrete is to be poured, and these units are arranged on a horizontal plane. The units are connected so that they can be bent and rotated freely, and an elastic member that can be expanded and contracted by remote control is connected between the left and right parts of these units. By selectively expanding and contracting the elastic members, the units can be moved in any direction within a horizontal plane. A concrete placing device characterized by being turned.