JPH03217558A - Concreting device - Google Patents

Abstract

PURPOSE:To improve working efficiency by a method wherein a base boom box body and a body are moved in the earthing state of an outrigger by means of an expansion and contraction boom serving as a guide, and an expansion and contraction boom is movable in the earthing state of the body by means of the base boom box body serving as a guide. CONSTITUTION:The positions of outriggers 17 and 18 are moved by a distance equivalent to the stroke length of a hydraulic cylinder 5 by expanding an expansion contraction boom 4a within a base boom box body 4 by means of the hydraulic cylinder 5 by switching a switching valve 22 to a position 22c. By contracting the expansion contraction boom box body 4a by switching a switching valve 23 to a position 23c and the switching valve 22 to a position 22a, the box body 4 is pulled this side. By switching the switching valve 23 to a position 23a, a frame 7 is placed on a floor. Through repetition of above operation, a switching valve 21 is switched, and forward and backward movement is effected in an arbitrary direction with the aid of a revolving motor 8 by means of its own force. This constitution enables the sharp increase of a concreting range.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a concrete pouring device that transports and distributes concrete supplied from a concrete pump.

[Conventional technology]

Conventionally, the following concrete pouring devices are known for distributing and pouring concrete supplied from a concrete pump.

Figure 6 shows a separate boom type concrete placing device.
It is used for concrete pouring of structures with no obstacles on the top, but since the boom (b) rotates on the column (.) and expands vertically, it is difficult to place concrete on structures that have already been assembled. It cannot be used in steel-framed concrete structures.

Figure 7 shows a horizontal bending boom type concrete placing device in which the base end of the boom is cantilevered by the steel column (d) of the structure, and is suitable for use inside an already constructed steel-framed concrete structure. However, the boom (C) must be bent horizontally to avoid other steel columns (e), which increases the overall size and weight, making it inconvenient to install and transport, and there is a limit to the range that the boom can reach. be.

Figure 8 shows a concrete placing device that is equipped with a drum (g) for winding up or paying out a concrete transportation hose, and a boom that supports the concrete transportation hose unwound from the drum in an extendable and pivotable manner. However, for example, when using it inside an already constructed steel frame, it is inconvenient to move to the installation site because there is no crane equipment, and there is a limit to the reach of the boom.

Figures 9 and 10 show a system in which rails (k) are installed on the ceiling steel beam (j) or on the floor, making it possible to move freely horizontally to the required position. Although it is possible to perform pouring, it requires a great deal of cost and labor to install, install, and remove the running rails.

[Problem to be solved by the invention] When pouring concrete in an area that cannot be reached by a boom truck when pouring concrete into a steel-framed concrete structure that has already been constructed, it is necessary to place a concrete transport pipe on the floor and It is common for two workers to connect a flexible hose to the concrete discharge part of the machine and swing the flexible hose around while pouring concrete into a desired location. The installed transport pipes are shaken by the pulsating flow of concrete, disturbing the reinforcing bars and adversely affecting the quality of the concrete that has already been placed.

As a means to solve these problems, the above-mentioned figures 6 to 1
Although concrete pouring equipment as shown in Figure 0 is well known, the reality is that it is not widely used. The following may be the cause of this.

1) It is inconvenient to install concrete placing equipment at any location.

2) In order to place concrete over a wide area, it is necessary to make the concrete placing device itself longer, but the increased weight makes transportation and installation more difficult.

3) Although it is possible to expand the pouring range by running the concrete placing equipment suspended or on the floor and moving it in a straight line, unnecessary costs are incurred due to the installation and removal of running rails.

SUMMARY OF THE INVENTION An object of the present invention is to provide a concrete placing device that allows easy movement of the equipment and prevents pulsation of the boom and transport pipe.

[Means to solve the problem]

Like the inside of a steel-framed concrete structure that has already been constructed.
In order to facilitate concrete pouring at concrete sites where the boom of a concrete pump truck with a boom cannot reach and there is no crane equipment, a concrete pouring device with a boom that is configured to be extendable and retractable is installed as shown in Figure 1. At both front and rear ends of the telescopic boom that slides inside the base boom box,
An outrigger is provided that can lift the main body of the device fixed to the base boom box from the floor, and a hydraulic cylinder is provided between the telescoping boom and the base boom box.

[For production]

When the outriggers installed on the telescopic boom are retracted,
The main body of the equipment on the base boom box side is placed on the floor, and the telescopic boom is extended by extending the hydraulic cylinder, and the position of the IJ gar installed on the telescopic boom is set on the main body of the equipment on the perspective boom box side. Move from the department. Next, by extending the outriggers of the telescopic boom above the floor,
《- Lift the main unit of the device on the boom box side from the floor,
When the hydraulic cylinder is retracted, the main body of the device moves toward the outrigger.

By repeating this operation, the concrete placing device moves to any desired position by itself.

〔Example〕

1 to 5 show embodiments of the present invention. In FIG. 1, reference numeral 1 denotes a winding wheel for winding or unwinding a concrete transportation hose 2, and a vertical shaft is attached to a main body 3 via a bearing 9. It is attached so that it can rotate around K. 4 is the base boom box body, the main body 3K is fixed, and the booms 4a, 4
b and 4c are slidably fitted into each other. 5 is a hydraulic cylinder that connects the end of the piston front 95a to the poom 4a,
Also, the ends of the cylinders 5b are respectively connected to the base boom box 4, thereby allowing the boom 4a to expand and contract with respect to the base box 4. A swivel bearing 6 is attached to a pedestal 7 so that the main body 3 can rotate around a vertical axis. 8 is a swing motor, 8a is a swing pinion, and 6a is a swing gear. Reference numeral 11 denotes a hose winding drum for transporting concrete on the root side, and the concrete in the transport pipe 16 that is pumped from the concrete pump is connected to the hose 10 for transporting concrete.

12 and 13 are concrete transport pipes and rotary joints inside the winding drum 11. 19 is a hydraulic unit, and 21 is an oil pump. 22, Z3 is a switching valve, 24-2
9 is a switching valve 21 , 22 . 23 and swing motor 8
, the cylinder 5b, and the outriggers 17 and 18.

The method of concrete pouring is explained using Figure 1.
Concrete pumped from a concrete pump (not shown) passes through a base concrete transport hose 10, a concrete transport pipe 12, and a concrete transport hose 2, and is discharged from the tip to a concrete placement site.

The concrete transportation hose 2 is a boom 4a + 4b,
Roller 14 pivotally supported by 4c, tip hose guide l5
is supported by Fig. 2 is a hydraulic circuit diagram of this device. When the switching valve n is switched to the 220 position, the oil from the oil pump passes through the piping and a pressing force acts on the piston 5C in the cylinder 5b, causing the pool 4a to move. The base boom extends with respect to the box body 4.

When the switching valve n is switched to the position 22a, hydraulic pressure is applied to the piston front 5a side through the pipe n, and the boom 4a is pulled back and stored in the base boom box 4. The winding drum is synchronously mounted on bearing 9.
, the distal end discharge port of the concrete transportation rubber hose 2 can move horizontally in the front-rear direction.

In addition, by switching the switching valve 21, it is possible to perform right turn and left turn, and move the distal end outlet in the horizontal left and right directions.

A concrete transport pipe 12 passing through the center of the main body 3 is provided with a rotary joint 13 to enable the winding wheels 1 and 11 to rotate. The boom 4a, which extends and retracts with a slide 9 inside the base boom box body 4, has outriggers 17 at the tip and rear ends, respectively, which can lift the pedestal 7 from the floor.
18 will be installed.

In normal concrete pouring, the pedestal 7 is installed on the floor,
Concrete is placed by moving the position of the tip discharge port to the desired concrete placement location using the telescoping boom and rotation function, but if the tip discharge port cannot reach or if you wish to relocate this concrete placing device. , do the following:

First, when the switching valve n is switched to the position 220, the telescopic pool 4a slides inside the base boom box body 4 under the action of the hydraulic cylinder 5, and the telescopic pool 4a is extended. The position of the assist trigger moves by the stroke length of the hydraulic cylinder 5.

Next, when the switching valve O is switched to the position 230, the outrigger 17. 18 cylinders 17a, 18a extend,
The pedestal 7 placed on the floor rises above the floor.

In this state, when the switching valve n is switched to the position 22a, the telescopic boom 4a is retracted, and the base boom box body is moved to the outrigger 17.
It is possible to pull it to the side. Next, switch the switching valve B to Z3.
When switched to position a, the cylinders 17a and 18a of the outriggers 17 and 18 are retracted, and the pedestal 7 is placed on the floor. Thereafter, by repeating the above-mentioned operation, the switching valve 2
1 and rotate the swing motor 8, the robot can move forward or backward in any direction on its own.

FIGS. 3 and 4 show an embodiment of the outrigger in which the main body of the device including the base boom box 4 is lifted from the floor.

Fig. 3 shows an elevating type outrigger similar to Fig. 1.2, and Fig. 3(a) shows a state in which the outriggers 17 and 18 are raised and the booms 4a, 4b, and 4c are retracted;
b) Ground the outriggers 17 and 18 and boom 4a
+ 4 b + 4 c is in a state of extension.

Figure 4 is an IJ moth with open legs, and Figure 4 (.)
raises the outriggers 17 and 18, and the booms 4a,
4b* 4c is retracted, FIG. 4(b) shows the outrigger 17. 18 to the ground, and the pooms 4a, 4
This shows the state where b and 4c are extended.

An example of the use of this device at a concrete pouring site as shown in Fig. 5 will be described below.

If this device is temporarily placed at location (■) using existing tower cranes, lifts, mobile cranes, etc., the device can be used to reach location (■) suitable for concrete pouring without any other means of transportation. Able to move on its own. Concrete can be placed within the range ia by the expansion and contraction of the pooms 4 a , 4 b + 4 C, the rotation of the take-up drum 11 shown in FIG.

If there is a place that is shaded by an obstacle such as a pillar (θ) of a structure, or if it is necessary to cast the area ma, ■a, please move this device by itself to the desired location. After that, concrete can be poured.

When moving the installation location, be sure to remove the concrete transport hose l wound around the lower winding ram 11 shown in Fig. 1.
By letting out O, there is no need to disconnect the concrete transportation rubber hose 10 and the transportation pipe 16 (1).

〔Effect of the invention〕

The present invention relates to a pipe or hose for transporting concrete [2]
In the concrete placing device, the base boom box (4) slidably supports the telescopic boom (4a), and the swing bearing (6).
The main body (3) rotatably supports the base boom box (4) around a vertical axis via the main body (3), and the tip of the telescopic boom (4a) and a part of the wall of the base boom box (4) are penetrated. and an outrigger αn. and a hydraulic cylinder (5) provided between the telescopic boom (4a) and the base boom box body (4), and when the outrigger is in contact with the ground, the base boom box body and main body are expanded and contracted by the hydraulic cylinder. The outriggers and the main body can be moved by using the telescopic boom as a guide, and when the main body is on the ground, the telescopic boom can be moved using the base boom box as a guide by expanding and contracting the hydraulic cylinder. By expanding and contracting the hydraulic cylinder, the entire concrete pouring equipment can be moved by itself.

Since it can be moved on its own without the need for transportation equipment such as a crane, it can be easily used to place concrete in areas that are in the shadow of obstacles or where the discharge port cannot reach, and the casting area can be expanded. Expanded to a large width.

By equipping the telescopic boom with an outrigger function, it has the effect of suppressing the overturning or pitching of the telescopic boom during concrete pouring, resulting in labor savings for concrete pouring, improved work efficiency, and reduced equipment costs. .

[Brief explanation of drawings]

FIG. 1 is a side view of a concrete placing device according to an embodiment of the present invention, and FIG. 2 is a hydraulic circuit diagram of the device shown in FIG. FIG. 3 is a perspective view of an example of how the outriggers are attached, where (-) shows when the outriggers are raised, and (b) shows when the outriggers touch the ground. Figure 4 is a perspective view of another example of outrigger installation, where (.) indicates outrigger mounting.
When the IJ gar is rising, (b) shows when it touches down. FIG. 5 is a plan view showing an example of use of the apparatus of the present invention, and FIGS. 6 to 10 are schematic views showing conventional concrete placing apparatus. 3...Main body 4...Eas boom box body 4
a...Telescopic boom 5...Hydraulic cylinder 17.
18... Outrigger agent

Claims (1)

[Claims] Concrete placing equipment equipped with an extendable boom that supports a concrete transport pipe or hose includes a base boom box body that slidably supports the telescoping boom, and a base boom box body that rotates around a vertical axis via a swing bearing. an outrigger provided on the main body that is rotatably supported by the telescopic boom, and a part that penetrates the tip of the telescopic boom and a part of the wall of the base boom box body to lift the base boom box body and the main body from the floor; , a hydraulic cylinder installed between the telescopic boom and the base boom box body, and when the outrigger is in contact with the ground, the base boom box body and the main body can be moved using the telescopic boom as a guide by the expansion and contraction of the hydraulic cylinder, and the main body is A concrete placing device characterized by being configured such that when it is in contact with the ground, the telescoping boom can move using the base boom box as a guide by expanding and contracting a hydraulic cylinder.