JP3451566B2 - Method and apparatus for transporting concrete for dams - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for carrying dam concrete, and more particularly to a method and apparatus for carrying in a vertical direction.

[0002]

2. Description of the Related Art As a concrete transportation method at a construction site of a concrete dam, a method is known in which a concrete bucket is moved in a three-dimensional direction by a cable crane or a jib crane.

However, in the RCD construction method and the extended layer construction method (ELCM construction method) which have been recently developed as a rationalized construction method, the movement on the setting surface is carried by loading on a dump truck and is set from the batcher plant. Transport to the surface
It is performed by a cable crane, an incline, a belt conveyor, etc.

In other words, in this type of rationalized construction method, horizontal transportation is limited to the dump truck, but in the vertical direction, if only transportation from the batcher plant to the setting surface is taken into consideration. Good, therefore, the degree of freedom in selecting the concrete carrying device is increased, and it is possible to adopt the various devices described above.

However, such a carrying device has
There was a problem explained below.

[0006]

That is, when concrete is transported by a belt conveyor, concrete is transshipped a plurality of times, and as the number of transshipments increases,
This may cause material separation, and if material separation occurs, re-kneading takes time and time.

Further, in the case of transportation by a cable crane or an incline, since the equipment itself is expensive, the transportation cost of concrete becomes high.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a dam concrete which does not cause material separation and can reduce transportation cost. To provide a carrying method and a carrying device.

[0009]

In order to achieve the above object, the present invention is directed to a dam from a concrete plant installed on a slope near the top level of a dam to be constructed, toward the concrete pouring position on the lower end of the slope. A method for transporting concrete for use, between the concrete plant and the placing position, a chute type placing device provided with a spiral space along the slope is installed and weighed in the concrete plant. The concrete constituent material is charged from the upper end side of the spiral space, and the concrete constituent material is kneaded by flowing down the rotating spiral space to simultaneously carry out the production and transportation of concrete.
I decided to do it. Also, the present invention is a device for transporting dam concrete from a concrete plant installed on a slope near the top level of a dam to be constructed toward a concrete placing position on the lower end side of the slope, wherein the concrete plant and the A chute type pouring device installed between the pouring position and a spiral space along the slope is provided, and concrete constituent materials measured in the concrete plant are charged from the upper end side of the spiral space. Then, the poured concrete constituent materials are kneaded by flowing down the rotating spiral space to obtain a concrete
The production and transportation of the pigs were carried out simultaneously .
According to the transportation method and the transportation device having the above-described configuration, the measured concrete constituent material is charged from the upper end side of the spiral space, and the supplied concrete constituent material is kneaded by flowing down in the rotating spiral space. Therefore, there is no need to consider the occurrence of material separation due to transshipment of concrete. Further, in the carrying method and the carrying apparatus of the present invention, the concrete manufacturing process of kneading the concrete constituent materials and the carrying thereof can be simultaneously performed, so that the carrying cost of concrete can be greatly reduced. In the dam concrete conveying device, a material supply unit installed between the concrete plant and the chute type pouring device, and supplying a concrete constituent material measured from the concrete plant to the chute type pouring device. , A hopper station installed on the lower end side of the chute type placing device and receiving and storing the kneaded concrete constituent material, the chute type placing device is arranged along the slope, A cylindrical drum that is rotatably supported and has open both ends; a spiral blade that has a fixed outer peripheral edge inside the drum and forms a spiral space whose outer periphery is separated by the drum; and rotational driving of the drum. It can be configured with a mechanism.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 3 show an embodiment of a method and an apparatus for carrying dam concrete according to the present invention.

FIG. 1 shows an overall layout of a dam concrete carrier according to the present invention.
Concrete plant 10 and chute type placing device 12
A material supply unit 14 and a hopper station 16.

The concrete plant 10 is installed on a slope 20 near the top level of the dam 18 to be constructed,
Water, cement, which is a constituent material of dam concrete C,
It has a tank in which fine aggregate, coarse aggregate, various admixtures, etc. are stored, and measures the concrete constituent material corresponding to the required mixing ratio and sends it to the material supply unit 14.

As shown in detail in FIG. 3, the chute type placing device 12 is a cylindrical drum 12a having both ends opened.
The drum 12a is provided with a spiral blade 12b whose outer peripheral edge is fixed, and a rotary drive mechanism 12c for the drum 12a.

The drum 12a is extended from the vicinity of the concrete plant 10 along the slope of the slope 20 to the driving position on the lower end side of the slope 20, and the opening on the upper end side is provided with the material supply section 1
4 and is rotatably supported via a bearing 12d.

[0015] Incidentally, in FIG. 3, point shows only bearing portion 12d which is disposed at both ends of the drum 1 2a, drum 1 2a is being supported by the pre-supports 22 are shown in FIG. 2 A bearing portion 12d is interposed therebetween.

The spiral blade 12b is provided over the entire length of the drum 12a and includes the drum 12a and the spiral blade 12b.
The outer circumference is separated by the drum 12a, and the slope 2
A spiral space 24 having a slope of 0 is formed in the drum 12a.

A drum 12a having a spiral blade 12b fixed thereto
Is a unit in which units of appropriate length are connected, and when the placement position of the concrete C rises as the construction progresses, it is separated into units so that the placement position can be changed. ing.

The rotary drive mechanism 12c is installed at an intermediate position of the drum 12a. In the case of this embodiment, the drum 12a is provided.
The driven bevel gear 120c is fixed to the outer periphery of a, the driving bevel gear 121c meshes with the driven bevel gear 120c, and the drive motor 122c to which the driving bevel gear 121c is axially coupled.

The rotary drive mechanism 12c constructed in this way
Then, when the drive motor 122c is rotationally driven, the drum 1 is driven by the meshing of the driving and driven bevel gears 121c and 120c.
2a and spiral blade 12b rotate.

As shown in FIG. 2, the hopper station 16 is installed near the lower end opening of the drum 12a, receives the concrete c that has fallen in the spiral space 24, and stores it inside.

Next, a method of carrying the dam concrete C by using the carrying device having the above construction will be described. Concrete C dam when luck transportable, first, concrete constituent material of a predetermined mixing ratio from the concrete plant 10 is discharged.

The concrete constituent material discharged from the plant 10 is introduced into the spiral space 24 in the drum 12a of the chute type casting device 12 through the material supply section 14.
At this time, the rotation drive mechanism 12 of the chute type placing device 12
The drive motor 122c of c is being driven, and the drum 1
2a is rotating together with the internal spiral blade 12b,
Along with this, the spiral space 24 partitioned within the drum 12a also rotates.

That is, in the case of this embodiment, the concrete constituent material is put into the rotating spiral space 24.

When the concrete constituent material is put into the spiral space 24 in such a state, the concrete constituent material flows down in the spiral space 24, and the spiral blade 12b.
Concrete C is prepared by kneading while flowing in a state of being cut by.

The dam concrete C thus produced is received in the popper station 16 and stored therein after flowing down the spiral space 24. The concrete C stored in the hopper station 16 is then reloaded into the dump truck 26 and transported to the placing surface.

According to the concrete carrying device and the carrying method thus constructed, the weighed concrete constituent material is charged from the upper end side of the spiral space 24, and the charged concrete constituent material is rotated. The kneading is performed by flowing down the spiral space 24, so that it is not necessary to consider the occurrence of material separation due to transshipment of concrete.

Further, in the transportation method and transportation apparatus of the present invention, a concrete production process of kneading the concrete construction materials, their delivery and are performed concurrently to, Partly the mixer for kneading is not necessary, the concrete The transportation cost can also be significantly reduced.

[0028]

As described above in detail in the embodiments,
According to the method and apparatus for transporting concrete for a dam according to the present invention, material separation does not occur, and the transport cost can be significantly reduced.

[Brief description of drawings]

FIG. 1 is an overall layout view of a dam concrete carrying device according to the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a detailed explanatory view of a chute type placing device of a dam concrete carrying device according to the present invention.

[Reference Numerals] 10 concrete plant 12 chute punch set apparatus 12a drum 12b helical blade 12c rotation drive mechanism 14 material supply unit 16 hopper station 18 dam 20 slope 22 pre-supports 24 spiral space 26 dump truck

Claims (3)

(57) [Claims] 1. A method for transporting dam concrete from a concrete plant installed on a slope near the top level of a dam to be constructed toward a concrete placing position on the lower end side of the slope, which comprises the concrete plant and the cast concrete. Between the installation position, a chute type placing device provided with a spiral space along the slope is installed, the concrete constituent material measured in the concrete plant is charged from the upper end side of the spiral space, The concrete constituent materials that have been put in are kneaded by flowing down the rotating spiral space to prepare concrete and
A method for transporting concrete for a dam, which is characterized in that the transportation of the concrete is carried out simultaneously . 2. An apparatus for transporting dam concrete from a concrete plant installed on a slope near the top level of a dam to be constructed toward a concrete placing position on the lower end side of the slope, the concrete plant and the placing A chute type pouring device provided between the installation position and the spiral space along the slope is provided, and the concrete constituent material measured by the concrete plant is charged from the upper end side of the spiral space. , The concrete constituent material that was input is kneaded by allowing it to flow down through the rotating spiral space to produce concrete and
A concrete concrete carrier device for dams, characterized in that it simultaneously carries out the transportation of concrete. 3. The luck of dam concrete according to claim 2.
In the carrying device, a material supply unit that is installed between the concrete plant and the chute type pouring device, and supplies a concrete constituent material measured from the concrete plant to the chute type pouring device, and the chute type pouring device A hopper station installed on the lower end side of the device for receiving and storing the kneaded concrete constituent material, and the chute type placing device is arranged along the slope and is rotatably supported. A cylindrical drum having both ends opened; a spiral blade having an outer peripheral edge fixedly provided in the drum and forming a spiral space having an outer periphery separated by the drum; and a rotary drive mechanism for the drum. A featured concrete transporter for dams.