JPH0139532Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The present invention relates to a batch plant for mixing ready-mixed concrete to be poured in dam construction, and particularly relates to a batch plant that can be installed within the dam body to be constructed. .

[Technical background of the idea and its problems] Conventionally, in dam construction, when constructing an embankment body, a cable crane was stretched across both banks of the embankment body, and the cable crane poured ready-mixed concrete into the embankment body. Cable crane construction method for transporting to the surface,
An incline construction method is known, in which a running path is provided along the slope of the dam attachment area, and a bucket truck is run on the running path to transfer fresh concrete to the pouring surface of the dam body. These construction methods involve setting up a vatsiya plant to produce ready-mixed concrete on the side of a mountain.
Concrete raw materials are also transferred from an aggregate stockyard built on the mountainside to a batch plant using conveyors, where aggregates and other materials are kneaded into ready-mixed concrete.The ready-mixed concrete is transferred using a transfer car and suspended by a cable crane. After transferring the ready-mixed concrete to a concrete bucket or bucket truck, it is lowered to the pouring surface of the embankment body, and transported to a predetermined pouring point using a dump truck or conveyor for pouring.

However, these methods require expensive transportation machinery such as cable cranes, inclines, and transfer cars outside the embankment, and the time it takes to mix the ready-mixed concrete and transport it to the pouring point is long, resulting in changes in the quality of the concrete. There are problems such as making it easier to do so.

[Purpose of the invention] The purpose of the invention is to enable the installation of a batch plant inside the dam body, to minimize the number of equipment outside the dam body, and to efficiently transfer ready-mixed concrete from the batch plant to the pouring point. The purpose is to make it possible to transport it.

[Summary of the invention] The present invention provides a polygonal pillar with a mixing device that mixes concrete raw materials and discharges ready-mixed concrete from the bottom so that it can be raised and lowered and fixed at any position. A turntable on which a dump truck is placed is provided at the lower part of the pillar surrounded by the kneading device, and the turntable is provided so as to be movable up and down along the pillar to follow the movement of the kneading device. This allows the mixing device to be raised according to the height of the pouring surface of the embankment body, and when transferring the ready-mixed concrete from the mixing device to the dump truck, the dump truck is placed on the turntable. The direction of movement of the dump truck can be freely changed within the support depending on the hardening condition of the poured concrete, so that it can be efficiently transported to the pouring point.

[Embodiment of the invention] A preferred embodiment of the batch plant according to the invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes columns erected on the casting surface 2 of the embankment body, and as shown in FIG. 2, four columns 1 are arranged in a rectangular shape. A pair of guide frames 3, both ends of which are slidably fitted into the support column 1, are provided in parallel to the support column 1, as shown in FIG. The guide frame 3 consists of an upper frame 3a and a lower frame 3b, and supports a kneading device 4 for kneading concrete raw materials to produce ready-mixed concrete.

The support 1 is provided with engagement holes 5 at appropriate intervals along its height, and the guide frame 3 is also provided with engagement holes 6 that align with the respective engagement holes 5 of the support 1. The guide frame 3 is provided with fixing means 7 for fixing the guide frame 3 to the support column 1. As shown in FIG. 2, this fixing means 7 consists of a hydraulic cylinder 9 attached to the kneading device 4 via a support 8, and a lock pin 11 connected to a rod 10 of the hydraulic cylinder 9. As a result, the lock pin 11 is inserted into and removed from the two aligned engagement holes 5 and 6 to fix the guide frame 3 at an arbitrary position on the support column 1.

A lifting device 12 consisting of a hydraulic cylinder or the like is connected to the upper frame 3a, and both ends of a frame 13 below the lifting device 12 are slidably provided on the column 1 as shown in FIG. It is fixed at any position on the column 1 by a connecting pin 15 which can be freely inserted into and removed from the hole 5 using a hydraulic cylinder 14 or the like. The kneading device 4 has a storage section 16 in which crushed stones, sand, etc. are stored in the upper part.
, a mixer section 17 for kneading concrete raw materials such as crushed stone and sand from each storage section 16, and a discharge port 19 for discharging fresh concrete from the mixer section 17 to a dump truck 18. Conveyor 20 that supplies raw materials
A rotary chute 21 to which the conveyor 20 is connected and which distributes the raw material supplied from the conveyor 20 to each storage section 16 is provided.

A rotary table 22 on which a dump truck 18 is mounted is provided on the support 1 below the kneading device 4 so as to be movable up and down. This rotary table 22 has a fourth
As shown in the figure, a support stand 23 that is slidable on the support column 1 and a table section 2 that is rotatably provided on the support stand 23
4, and a drive device 25 provided on the support base 23.
The table portion 24 is rotated by. The support stand 23 is provided with a hydraulic cylinder 26 and a coupling pin 27 connected to the hydraulic cylinder 26. The support stand 23 is moved by inserting and removing the coupling pin 27 into the engagement hole 5 of the support column 1 using the hydraulic cylinder 26. It can be fixed at any position on the pillar 1. This rotary table 22 is a lifting device 2 provided on the lower frame 3b of the guide frame 3.
8, it is provided so as to be movable up and down along the support column 1.
This elevating device 28 includes wires 29 connected to the four corners of the rotary table 22, as shown in FIG.
It consists of a hoisting drum 30 for winding the wire 29, and a rope sheave 31 for guiding the wire 29 to the hoisting drum 30 as appropriate.
will be provided.

As shown in FIG. 4, entry plates 32 for the dump truck 18 are provided on all sides of the rotary table 22.
The outlet 1 of the kneading device 4 is located in the center of the table part 24.
An opening/closing lid 33 is provided which is aligned with the opening/closing lid 9 .

In the above, first, in order to raise the kneading device 4 along the support 1, the lock pin 11 of the fixing means 7 that engages the guide frame 3 with the support 1 is inserted into the engagement hole 5.
and operate the lifting device 12 to move the guide frame 3 so that the engagement hole 6 of the guide frame 3 is aligned with the engagement hole 5 of the next stage of the support column 1.
After the lifting device 12 is raised to a position at The lower frame 13 is positioned in the engagement hole 5 above the column 1, and the lifting device 12 is fixed with the connecting pin 15.

In this way, the kneading device 4 can be raised sequentially for each engagement hole 5 provided in the support 1. Furthermore, if the pin 27 that fixes the rotary table 22 to the support 1 is removed when the kneading device 4 is raised, the rotary table 22 will also rise following the kneading device 4. In pouring concrete, the ready-mixed concrete mixed by the mixing device 4 is delivered to a dump truck 18, and carried to a predetermined pouring point by the dump truck 18, where it is poured. In this case, if the direction of movement of the dump truck 18 is immediately after finishing pouring and the concrete layer has not yet solidified, the rotating table 22 changes the direction of the dump truck 18 so that it is in a direction that does not hinder the movement of the dump truck 18. can do.

When pouring concrete near the pillar 1, the rotary table 22 is raised along the pillar 1 by the lifting device 28 as shown in FIG. 6, and the opening/closing cover 33 provided on the rotary table 22 is opened. The fresh concrete is transferred from the kneading device 4 to the dump truck 18 through the opening/closing lid 33, or the fresh concrete is directly discharged from the discharge port 19 and placed in the vicinity of the pillar 1.

The thickness of the concrete to be poured is the engagement hole 5 of the support column 1.
The pitch of the kneading device 4 is set to be approximately the same as the pitch of the pouring surface 2, and the kneading device 4 is raised sequentially according to the height of the pouring surface 2. pouring surface 2
When the number reaches the top of the pillar 1, the pillars 1 are successively added as shown by the two-dot chain line in FIG.

Next, an example of constructing a dam body using the batcher plant of the present invention will be explained with reference to FIG. In FIG. 7, numeral 34 indicates an embankment body to be constructed. A support 1 is erected on the bottom surface 34a of the embankment body 34, and a kneading device 4 is provided on the support 1 so as to be movable upward.
On the other hand, an aggregate stockyard 36 is installed on a mountainside such as the dam attachment part 35, and concrete raw materials are supplied from the aggregate stockyard 36 to the kneading device 4 via a conveyor 20 or the like, and from a kneading device 36 to the kneading device 4 via a conveyor 20 or the like.

The ready-mixed concrete mixed by the mixing device 4 is transferred to a dump truck 18, and transported to a pouring point by the dump truck 18, where it is poured. In this pouring, the concrete is poured in layers, and the mixing device 4 is raised according to the height of the pouring surface, and the columns 1 are added as needed, and the embankment body 34 is constructed. go. Further, the inclination of the conveyor 20 is changed in accordance with the upward movement of the kneading device 4.

[Effects of the Invention] As is clear from what has been described in detail above, the present invention provides the following excellent effects.

(1) Since we have installed a mixing device that can be raised and lowered freely on the pillar and can be fixed at any position, it can be installed directly on the pouring surface to pour concrete and adjust the mixing device according to the height of the pouring surface. The kneading equipment can be raised one by one to pour concrete in layers.

(2) Since the rotary table on which the dump truck is placed is installed on the support, the direction of the dump truck can be changed freely, and ready-mixed concrete can be transported efficiently without the need for supports.

(3) Concrete can be easily poured between the columns since the rotary table is mounted on the columns so that it can be raised and lowered.

(4) Since it can be installed inside the dam body to be constructed, there is no need for transportation machinery installed outside the dam body, such as the conventional incline construction method or cable crane construction method, and furthermore, the mixed ready-mixed concrete can be immediately transported to the pouring point. This prevents the quality of concrete from changing.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the batch plant according to the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 1, and Fig. 4 is a sectional view taken along the - line in Fig. 1. FIG. 5 is a perspective view showing details of the elevating device for the rotary table shown in FIG. 1, and FIG.
The figure is a front view showing a state in which the rotary table is raised in FIG. 1, and FIG. 7 is a front view showing an example of constructing a dam using the batcher plant of the present invention. In the figure, 1 is a column, 2 is a pouring surface, 4 is a kneading device, 1
2 is a lifting device, 18 is a dump truck, and 22 is a rotary table.

Claims (1)

[Scope of utility model registration request] A kneading device that mixes concrete raw materials and discharges fresh concrete from the bottom is installed on a polygonal support that is erected in a polygonal shape and is added as the kneading device rises, so that it can be raised and lowered and fixed at any position. A batch plant, characterized in that a turntable on which a dump truck is placed is provided at the lower part of the pillar surrounded by the pillar, and the turntable is provided so as to be movable up and down along the pillar to follow the movement of the kneading device. .