JP2000167823A - Sampling device in batcher plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extract concrete without interrupting concrete transportation work every time when the concrete produced in a batcher plant is checked for quality. SOLUTION: A sub-hopper 20 is formed in a concrete hopper 17 installed under a batcher plant 10. When the quality of concrete produced by the batcher plant is confirmed, the gate of the sub-hopper 20 is opened, and the concrete in the concrete hopper 17 is diverted into the sub-hopper 20, so that a prescribed amount of concrete can be extracted without interrupting transportation work in which concrete is loaded onto a transfer car 18 from the discharge opening 17a of the concrete hopper 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sampling device in a batcher plant, and more particularly to a sampling device for collecting quality control concrete with less influence on a concrete placing process.

[0002]

2. Description of the Related Art In large-scale outdoor construction sites including dam construction, concrete is often produced in a batcher plant. In this case, in order to confirm the quality of the manufactured concrete, concrete is sampled every several hours and a quality control test is performed. Generally, a work vehicle for sampling concrete, for example, a light dump truck, etc., is put on standby below a concrete hopper provided in a batcher plant, and the discharge port of the concrete hopper is opened to collect a necessary amount of concrete. are doing.

[0003] In dam construction, etc., concrete is manufactured by putting large-sized aggregate into a batcher plant.
When the outlet of the concrete hopper is opened, these large aggregates tend to be discharged first. Therefore, when sampling, it is necessary to first put a transferer for transporting concrete below the concrete hopper, and then load concrete containing large aggregate discharged first into the transferer.

After the transferer is temporarily retracted from below the concrete hopper, the sampling work vehicle described above is put below the concrete hopper to collect the quality control concrete. After the concrete sampling is completed, the transferer is put in again, the remaining concrete is loaded, and the transportation to the casting site is continued.

[0005]

Conventionally, as described above, the transferer must be moved each time sampling is performed, and during this time, the concrete transportation work is interrupted, so that the influence on the progress of the construction is affected. It was great.
In addition, when transferring the transfer car, it is necessary to communicate about the operation and manage safety.

Therefore, when checking the quality of concrete manufactured in a batcher plant, there arises a technical problem to be solved in order to be able to collect concrete without interrupting the concrete transporting operation each time. Therefore, an object of the present invention is to solve this problem.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object, and comprises a charging portion for cement and aggregate and a metering of the charged cement and aggregate to a set ratio. In a batcher plant comprising a measuring section, a mixer section for adding and mixing water to the measured cement and aggregate, and a concrete hopper for discharging concrete generated in the mixer section downward, in the batcher plant, A sub hopper is provided on the way to form a diversion of concrete, and a gate is provided at the entrance of the sub hopper along a slope of the concrete hopper, and by opening and closing the gate, the concrete in the concrete hopper is diverted to the sub hopper or To provide a sampling device in a batcher plant configured to be able to shut off It is.

[0008]

An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a batcher plant 10, in which an input section 11 for cement and aggregate is provided at the top of the batcher plant 10. Cement and aggregate are separately conveyed and input by a belt conveyor 12 or the like. A storage unit 13 is provided below the storage unit 13, and the inside of the storage unit 13 is partitioned by a partition wall (not shown).
Separately store the cement and the aggregate supplied from 1 and the water sent by the pipes.

[0009] A measuring section 14 is provided below the storage section 13, and the cement and the aggregate in the storage section 13 are measured and stored respectively so that the ratio of the cement and the aggregate becomes a predetermined ratio. Each of the stored materials is fed through a swivel chute 15 to a mixer section 16 provided therebelow. Then, in the mixer section 16, the measuring section 14
Water is added to the cement and aggregate measured in the above and mixed. Thus, concrete having the set strength, workability and durability is produced.

When transporting the concrete produced in the batcher plant 10 to a casting site, the transferer 18 is moved to a position below a concrete hopper 17 installed below the mixer section 16 to be on standby. The discharge port 17a of the hopper 17 is opened, and the concrete in the concrete hopper 17 is loaded on the transferer 18.

Here, a sampling sub-hopper 20 is provided in the middle of the concrete hopper 17.
As shown in FIG. 2, a gate 22 that slides along the slope of the concrete hopper 17 is provided at the entrance 21 of the sub hopper 17, and the gate 22 is opened and closed by driving a cylinder 23 that expands and contracts by hydraulic pressure or pneumatic pressure. Is done. Further, a shutter 25 is provided at the outlet 24 of the sub-hopper, and the shutter 25 is also an actuator (not shown) such as a cylinder.
It is formed so that it can be opened and closed.

In the state shown in FIG. 1, since the gate 22 of the sub hopper 20 is closed, the concrete 30 put into the concrete hopper 17 is not diverted to the sub hopper 20, and It is loaded on the transferer 18 from the discharge port 17a.

In the dam construction, etc., the aggregate 30a of a large size is put into the batcher plant 10 to produce the concrete 30, so that the discharge port 17a of the concrete hopper 17 is used.
When these are opened, the aggregates 31a having a large size are discharged first, and the aggregates 31b having a small size are more likely to be disposed above the middle of the concrete hopper 17.

When sampling is performed to check the quality of the concrete 30 manufactured, the cylinder 23 of the sub hopper 20 is contracted to open the gate 22, and the shutter 25 of the sub hopper 20 is opened. At that time, as shown in FIG. 3, the concrete 30 in the concrete hopper 17 is diverted from the sub hopper inlet 21 to the sub hopper 20, and is collected from the outlet 24 to the sampling chute 26 and the like.

As described above, the large-sized aggregate 31a is used.
Is discharged first when the discharge port 17a of the concrete hopper 17 is opened, so that the concrete 30 diverted from the middle of the concrete hopper 17 does not include the aggregate 31a having a large size, and Work can be done easily.

After a predetermined amount of concrete 30 has been collected, the cylinder 23 is extended to
When the gate 22 of the concrete hopper 1 is closed, the diverting of the concrete 30 to the sub hopper 20 is interrupted.
All the concrete 30 in 7 is discharged to the transferer 18 from the lower discharge port 17a as usual.

As described above, it is not necessary to retreat the transferer 18 during the sampling of the concrete for quality check, and the manufactured concrete 30 is loaded on the transferer 18 and the transporting operation is performed in the same manner as in the normal operation. While performing, it is possible to collect the concrete 30 from the sub-hopper 20 to the sampling chute 26.

In this embodiment, the transferer 18 is used for transporting the concrete manufactured in the batcher plant 10. However, the transporter 18 is also used for transporting by a dump truck or a belt conveyor. By using the sampling device of the invention, concrete can be sampled without interrupting the work of transporting concrete.

Thus, the present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

[0020]

According to the present invention, as described in detail in the above embodiment, a sub hopper is provided beforehand in the middle of a concrete hopper of a batcher plant to check the quality of concrete manufactured by the batcher plant. Then, a predetermined amount of concrete can be collected by opening the gate of the sub hopper and diverting the concrete in the concrete hopper to the sub hopper.

In this way, the sampling operation can be performed without interrupting the concrete transportation operation, so that there is no risk of hindering the concrete placing process, and the operation efficiency can be improved.

[Brief description of the drawings]

 The figure shows an embodiment of the present invention.

FIG. 1 is a front view of a batcher plant.

FIG. 2 is a partially cutaway front view showing a state in which a sub hopper is closed.

FIG. 3 is a partially cutaway front view in a state where a sub hopper is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Batcher plant 11 Input part 14 Measuring part 16 Mixer part 17 Concrete hopper 20 Sub hopper 21 Sub hopper entrance 22 Gate 30 Concrete

Claims (1)

[Claims] 1. A cement and aggregate input section, a measuring section for measuring the input cement and aggregate in a set ratio, and a mixer section for adding water to and mixing the measured cement and aggregate. A concrete hopper that discharges the concrete generated in the mixer section downward, a sub-hopper is provided in the middle of the concrete hopper so that concrete can be diverted, and concrete is provided at the entrance of the sub-hopper. A sampling device in a batcher plant, wherein a gate sliding along a slope of a hopper is provided, and by opening and closing the gate, concrete in the concrete hopper can be diverted or blocked to a sub hopper.