JPH0214602Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a concrete placing device for steel concrete structures.

Figure 1 shows a separate boom a for placing concrete in a reinforced concrete structure with no obstructions above the concrete placement site. Because the structure is such that it can be expanded, it cannot be used in already constructed steel-framed concrete structures.

Figure 2 shows a horizontal bending boom c for placing concrete in steel-framed concrete structures.
is cantilevered and fixed to a vertical steel column d, so the boom e is attached to a steel column in the concrete pouring plane.
In order to avoid d', the boom e must be bent horizontally, which has the drawback of increasing the overall size and weight.

The present invention was proposed in order to eliminate these drawbacks and facilitate the concrete pouring of steel-framed concrete structures that have been assembled to the top. a suspended trolley, a frame for concrete placement arranged on the suspension trolley, a winding drum mounted on the frame, a concrete casting hose wrapped around the winding drum, and the frame. Concreting equipment for a steel-framed concrete structure, comprising: a telescoping boom case horizontally pivotable; and a telescoping boom telescopingly mounted on the telescoping boom case and supporting the hose. This is related to.

Since the concrete placing device according to the present invention is configured as described above, after horizontally moving the suspended truck to a required position along the rails arranged on the steel beam, A telescopic boom case mounted on a concrete pouring frame,
When the telescoping beam, which is telescopically mounted on the telescoping boom case, is rotated horizontally with respect to the frame body, and the telescoping beam telescopically mounted on the telescoping boom case is extended and contracted, the concrete-placing hose supported by the telescoping boom moves into the concrete-placing frame. It is unrolled from a winding drum mounted on the body,
Alternatively, by being wound up, concrete can be placed through the hose without being obstructed by the steel beam, and even in areas that are in the shadow of the steel column, concrete can be poured onto the steel beam of the suspension truck. Concrete is placed by horizontal movement along the installed rails, horizontal rotation of the telescoping boom case relative to the concrete placement frame of the cart, and telescoping of the telescoping boom mounted on the case. This eliminates the need to bend the boom horizontally to avoid steel columns in the concrete placement plane, unlike the conventional horizontal bending boom for concrete placement. Therefore, the concrete pouring device becomes small and lightweight, and an inexpensive and efficient concrete pouring device for steel structures is constructed.

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

1 is a steel beam placed between columns 22 of a steel structure in the upper ceiling of a floor 2 where concrete is poured; a rail 3 is fixed between the beams 1;
A rail piece 5 perpendicular to the rail 3 is suspended via wheels 6 so as to be freely movable. . 8 in the diagram is wheel 6
This is a drive device.

A suspension truck 4 is suspended from the rail piece 5 via wheels 7 so as to be freely movable. 9 in the figure is a drive device for the wheels 7.

Therefore, the truck 4 can move freely in both vertical and horizontal directions using the rails 3 as a guide, and when the power is stopped, the brake is automatically activated to ensure that the truck 4 stops at a predetermined position.

The range in which the bogie 4 moves along the track piece 5 is such that it can move horizontally between the columns 22, 22 of adjacent steel structures, and the entire floor surface between the columns 22, 22 is covered with concrete. It is constructed so that it can be poured. (See Fig. 5) A concrete pouring frame 11 is attached to the cart 4 via a frame 10, and the frame 10 is arranged according to the height of the floor 2 and the ceiling beam 1 of the floor to be poured. The height of the frame 11 can be adjusted.

Mounted within the concrete casting frame 11 are hose winding drums 14 and 15 for independently winding concrete hoses 12 and 13 that can be rotated horizontally with respect to the frame 11, respectively. Each of the winding drums 14 and 15 is configured to be able to always apply a constant tension to the hoses 12 and 13 using a known device that can always wind the hoses 12 and 13 with a constant force. .

Both winding drums 14 and 15 are connected by an S-shaped pipe 16 having a rotary joint, and the hose 1
The concrete supplied to the winding drum 1 is supplied to the hose 13 via the S-shaped pipe 16, and
4 and 15 are designed to be able to feed concrete while rotating.

A telescopic boom case 17 that can be horizontally rotated with respect to the frame 11 is mounted on the lower end of the concrete placing frame 11, and telescopic booms 18a, 18b, and 18c are mounted on the boom case 17. . The boom case 17 is horizontally rotated with respect to the concrete placing frame 11 by a known turning device, and the telescopic booms 18a, 18b, and 18c in the telescopic boom case 17 are also extended and contracted by a known mechanism. A concrete hose 13 is supported on the telescopic booms 18a, 18b, and 18c, and a concrete discharge pipe 19 is provided at the tip of the hose 13. 2 in the diagram
0 is a power unit that drives each of the above-mentioned parts.

The hose 13 is connected to the telescopic boom 18a, 1.
The hose is pulled out from the hose winding drum 15 by the sliding force of the hoses 8b and 18c, and when it contracts, it is wound up by the drum 15. Telescopic boom 18a,
The stretching force of 18b, 18c and the winding force of the winding drum 15 are balanced, and the concrete hose 1
3. It is designed so that no sagging occurs.

Similarly, the concrete hose 12 is also designed to balance the driving force of the cart 4 and the winding force of the winding drum 14 so that there is no slack between it and the concrete transport pipe 21.

Since the illustrated embodiment is configured as described above, the fresh concrete pumped from the concrete pump (not shown) is transferred from the concrete transport pipe 21 to the concrete hose 12, the S-shaped pipe 16, the concrete hose 13, and the concrete It is discharged and placed at a predetermined position through the discharge pipe 19.

The concrete pouring frame 11 is mounted on the suspension truck 4 via the upper frame 10, and the wheels 7 and 6 of the truck 4 are mounted along the rail piece 5 and the rail 3, respectively. By moving the telescopic booms 18a, 18b, 18c, the telescopic booms 18a, 18b, 18c can be freely moved to a predetermined position.
A dead space is created from the concrete discharge pipe 19 at the tip of the concrete hose 13, which is telescopically supported by the telescoping boom together with the boom, by expanding and contracting the concrete hose 13 and horizontally rotating it together with the telescoping boom case 17. Concrete can be continuously discharged to a predetermined position without any problems.

According to the illustrated embodiment, the concrete placing device frame 11, which serves as the fulcrum of the telescopic booms 18a, 18b, and 18c, can be suspended and moved to any desired position. By simply turning horizontally, concrete can be poured without leaving any dead space, even in areas that are in the shadow of the pillars 22, so no torsional moment is applied to the concrete pouring device, making it smaller and lighter. By suspending using 1, it is possible to place reinforcement without disturbing the floor reinforcement, and it does not apply twisting moment to the steel frame, so it is suitable for small buildings with steel structure. can also be applied.

[Brief explanation of the drawing]

Figures 1 and 2 are respectively slope views of conventional concrete placing equipment, Figure 3 is a longitudinal sectional side view of essential parts showing an embodiment of the concrete placing equipment for steel-framed concrete structures according to the present invention, and Figure 4 The figure is a view taken from the arrow in FIG. 3, and FIG. 5 is a plan view showing the operating situation. 1... Steel beam, 3... Rail, 4... Suspended trolley,
5...Rail piece, 6,7...Wheel, 11...Concrete casting frame, 12,13...Hose for concrete, 14,15...Hose winding drum,
16...S-type pipe, 17...Telescopic boom case, 18a, 18b, 18c...Telescopic boom, 1
9...Concrete discharge pipe, 20...Power unit.

Claims (1)

[Scope of utility model registration request] A suspended trolley that is movably suspended from rails installed on a steel beam, a frame for placing concrete installed on the suspended trolley, a winding drum mounted on the frame, and a winding drum. A concrete casting hose wrapped around a concrete casting hose, a telescoping boom case mounted horizontally on the frame, and a telescoping boom telescopically mounted on the telescoping boom case and supporting the hose. Concrete placement equipment for steel concrete structures, characterized by: