JP2000302375A - Concrete conveying and placing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete conveying and placing device capable of improving the moving speed of a bucket in the radial working direction. SOLUTION: This concrete conveying and placing device comprises a mast 4 formed of a plurality of split masts 3 which are successively stacked on each other, an elevating/lowering frame 5 which is elevated along the mast 4, a turning frame 19 provided on the elevating/lowering frame 5, a jib 20 which is projected from the turning frame 19 in a substantially horizontal manner, a main rope 24 extended from a base end of the jib 20 to a forward end, and a trolley 27 which is transversely movable along the main rope 24, and capable of suspending a bucket 9 for conveying the concrete in an elevating/lowering manner, and increases the moving speed of the bucket 9 in the radial working direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete conveying and placing apparatus.

[0002]

2. Description of the Related Art In recent years, the RCD method (Roller Co.
Construction of a dam embankment has been carried out by using a "mated concrete".

[0003] In this RCD method, concrete is cast in the form of a plane repeatedly, and a concrete embankment layer is stacked to construct a dam embankment.

FIGS. 2 to 4 show an example of a conventional concrete conveying and casting apparatus using the RCD method. The concrete conveying and casting apparatus includes a leg member 2 installed on a riverbed 1 and a leg member 2. A mast 4 composed of a plurality of divided masts 3 sequentially stacked on the mast 2, an elevating frame 5 which is fitted to the mast 4 and which can be sequentially raised according to the stacking of the divided masts 3, and provided on the elevating frame 5 A swivel frame 6 that is swiveled about the mast 4 and
A support 7 standing upright on the revolving frame 6, a jib 8 whose base end is pivotally supported on the upper part of the support 7, a bucket 9 for transporting concrete, and a hoisting cable 10 installed at the rear of the revolving frame 6 And a raising / lowering drum 1 installed at the rear of the revolving frame 6 for raising and lowering the bucket 9 with respect to the tip of the jib 8 by winding and unwinding the lifting cable 12.
3 is provided.

The elevating frame 5 has an upper lock mechanism 14 that can be fixed to the mast 4, a lower lock mechanism 15 that can be fixed to the mast 4 below the upper mast 4, and moves the lower lock mechanism 15 toward and away from the upper lock mechanism 14. Lifting mechanism 16
And

The revolving frame 6 is provided with an opening through which the split mast 3 is inserted. When the mast 4 is extended, the jib 8 is raised and the existing split mast positioned at the uppermost stage through the opening is opened. New split mast 3 on 3
And connect them.

When the lifting frame 5 is raised with respect to the mast 4, the lower locking mechanism 15 is opened with the upper locking mechanism 14 fixed to the mast 4, and the lower locking mechanism 15 is moved by the lifting mechanism 16 to the upper locking mechanism. 14 and with the lower lock mechanism 15 fixed to the mast 4, the upper lock mechanism 14 is opened, and the upper lock mechanism 14 is moved by the elevating mechanism 16 to the lower lock mechanism 15.
Is repeated.

A bunker line 17 extending from the batcher plant to the vicinity of the leg member 2 is laid on the riverbed 1, and the transfer car 1 traveling on the bunker line 17 is provided.
8 feeds the concrete to the concrete conveying and placing device.

In the concrete conveying and casting apparatus shown in FIGS. 2 to 4, turning of the turning frame 6, lifting and lowering of the bucket 9,
The concrete transferred from the transfer car 18 to the bucket 9 is transported to a predetermined casting position by a combination of the undulation of the jib 8.

[0010]

However, in the concrete conveying and casting device shown in FIGS. 2 to 4, the weight of the jib 8 and the bucket 9 is undulated over a sheave at the tip of the jib 8 by a plurality of lines. Since it is supported by 10, the up-and-down operation of the jib 8 is slower than the up-and-down operation of the bucket 9 and the turning operation of the jib 8, and the moving speed of the bucket 9 in the working radius direction is slow.

The present invention has been made in view of the above-mentioned circumstances, and has as its object to provide a concrete conveying and placing apparatus capable of improving a moving speed of a bucket in a working radial direction.

[0012]

In order to achieve the above object, a concrete conveying and casting apparatus according to the present invention comprises a mast constituted by a plurality of divided masts which are sequentially stacked, and a lifting frame which can be raised along the mast. A turning frame provided on the elevating frame, a jib projecting substantially horizontally from the turning frame, a main rope extending from a base end to a distal end of the jib, and traversing along the main rope. And a trolley for suspending the concrete transport bucket so as to be able to move up and down.

[0013] In the concrete transport casting device according to the present invention, the concrete transport bucket is provided with a trolley capable of traversing along a main rope extending from a base end to a distal end of a jib projecting substantially horizontally from the turning frame. To improve the moving speed of the bucket in the working radius direction and reduce the weight of the jib.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of an embodiment of a concrete conveying and placing apparatus according to the present invention. In the drawings, the portions denoted by the same reference numerals as in FIGS. 2 to 4 represent the same components.

The concrete conveying and casting apparatus includes a mast 4 composed of a leg member 2 installed on a riverbed 1 and a plurality of divided masts 3 sequentially stacked on the leg member 2.
An elevating frame 5 capable of ascending along the mast 4, a turning frame 19 provided on the elevating frame 5, a jib 20 projecting substantially horizontally from the turning frame 19, and a jib 2
1 and a substantially horizontal split mast table 22 projecting from the lifting frame 5 in a direction perpendicular to the plane of FIG.

The cable crane mechanism 21 has a main rope 24 extending in the projecting direction of the jib 20, one end of which is locked at the base end of the jib 20 and the other end of which is locked at the tip of the jib 20. A trolley 27 which is pulled by a traversing drum 25 installed and wound up by a traversing rope 26 and which can be traversed along a main rope 24, and a trolley 27 which is extended and wound from a lifting drum 13 installed on a revolving frame 19. The transport device 28 is configured to be suspended from the trolley 27 by the lifting cable 12 to be taken up and down. The transport device 28 is configured to suspend the concrete transport bucket 9 or the divided mast 3. I have.

In the concrete transporting / casting apparatus of the present invention shown in FIG. 1, the transfer car is driven by a combination of the horizontal rotation of the jib 20 by the rotation of the revolving frame 19, the lifting and lowering of the transporter 28, and the lateral movement of the trolley 27. The concrete transferred from the bucket 18 to the bucket 9 suspended from the carrier 28 is transported to a predetermined casting position.

When the mast 4 is to be extended, the divided mast 3 used for extending the mast 4 is lifted by the transporter 28, the swivel frame 19 is swung, the jib 20 is turned, and the mast 4 is placed on the split mast table 22. After being placed, the divided mast 3 is lifted by means of a hoist (not shown) or the like and pulled into the revolving frame 19, and the divided mast 3 is further suspended through the opening of the revolving frame 19, and the existing mast located at the uppermost stage It is mounted on the split mast 3 and connected.

As described above, in the concrete conveying and casting apparatus shown in FIG. 1, concrete is transferred to the transporter 28 suspended on the trolley 27 which can traverse along the jib 20 projecting substantially horizontally from the revolving frame 19. Hanging the bucket 9 and moving the bucket 9 in traverse
Is performed and the trolley 27 is traversed, so that the moving speed of the bucket 9 in the working radial direction can be improved.

The divided mast 3 used for extending the mast 4 is lifted by the trolley 27 and mounted on the divided mast mounting table 22 by rotating the revolving frame 19 and then by means of a hoist (not shown) or the like. Since the divided mast 3 on the divided mast table 22 is lifted above the revolving frame 19, the efficiency of the mast extension operation can be improved.

Further, the trolley 27, the carrier 28, and the carrier 2
8 supports the weight of the concrete transport bucket 9 or the divided mast 3 suspended by the main rope 24.
The load on the jib 20 is reduced, and the structure can be simplified.

It should be noted that the concrete conveying and casting apparatus of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the spirit of the present invention.

[0024]

As described above, according to the concrete conveying and placing apparatus of the present invention, various excellent effects as described below can be obtained.

(1) In the concrete conveying and casting apparatus of the present invention, the concrete conveying bucket is traversed along the main cable extending from the base end to the distal end of the jib projecting substantially horizontally from the turning frame. Since the bucket is suspended on a possible trolley, the moving speed of the bucket in the working radial direction can be improved.

(2) Also, since the weight of the jib is reduced, if a small remodeling is carried out to lock the main rope at the base end and the tip end of the jib, the existing crane can be transported to the concrete transporting and placing apparatus. Can be diverted to

[Brief description of the drawings]

FIG. 1 is a side view showing an example of an embodiment of a concrete conveying and placing device of the present invention.

FIG. 2 shows RC using a conventional concrete conveying and placing device.
It is the whole figure which shows the D construction method.

FIG. 3 is a plan view related to FIG. 2;

FIG. 4 is a side view showing an example of a conventional concrete conveying and placing device related to FIG.

[Explanation of symbols]

 3 Split Mast 4 Mast 5 Elevating Frame 9 Bucket 19 Swivel Frame 20 Jib 22 Divided Mast Stand 23 Mast for Suspension 24 Main Cable 27 Trolley

Continuation of the front page (72) Inventor Kimio Nishito 2-2-1 Otemachi, Chiyoda-ku, Tokyo Ishikawajima-Harima Heavy Industries, Ltd. F-term (reference) 3F205 AB04 AB07 CA05 CA06 CA06 CA09

Claims (1)

[Claims] 1. A mast comprising a plurality of divided masts which are sequentially stacked, an elevating frame capable of ascending along the mast, a turning frame provided on the elevating frame, and projecting substantially horizontally from the turning frame. Jib to
A main rope extending from a base end to a distal end of the jib, and a trolley capable of traversing along the main rope and suspending a concrete transport bucket so as to be able to move up and down. Concrete transfer and casting equipment.