JPH0816397B2 - Automatic concrete discharging device in hopper - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete hopper capable of automatically discharging a requested volume to a truck side by simply inputting a switch when discharging concrete from a concrete hopper to a dump truck. The present invention relates to an automatic discharging device.

[0002]

2. Description of the Related Art For example, in a dam construction site, a cable crane is used as a means for transporting concrete from a manufacturing site to a pouring site. This one is equipped with a trolley that can be driven by being suspended from a main rope stretched along the longitudinal direction of a dam constructed in the mountains, and a concrete bucket suspended at the bottom of the trolley. The operation of traveling between the provided bunker line and the concrete hopper arranged at the central bottom of the dam 1 and supplying the concrete supplied on the bunker line to the hopper side is repeated. Further, the hopper sequentially discharges the concrete to the dump truck, and the truck repeats the work of transporting the loaded concrete to a predetermined setting site.

In this structure, when concrete is discharged from the concrete hopper to the dump truck,
Conventionally, the operator normally operates the switch located on the side of the hopper to open the gate of the hopper and release concrete to the dump truck side, and the operator visually confirms when the load is almost full and switches. Although the work of cutting off and stopping the release was repeated, there were the following problems.

[0004]

First, since the discharge amount is determined by visual confirmation by the operator, the load amount on the truck is not constant and there are many variations. Of course, in the case of a small load, the loss per transport is small, but since this work is repeated thousands of times and tens of thousands times until the dam is completed, the accumulated loss becomes extremely large. In the case of overloading, it will damage the truck itself and increase the risk during transportation.

Further, when concrete is dropped from the bucket into the hopper while the remaining amount of concrete in the hopper is large, the concrete may overflow. Therefore, the operator has had to instruct the bucket dropping timing while always being aware of the remaining amount according to the number of passing trucks. Apart from this, there are several types of concrete that are thrown into the hopper, so check each type each time it is dropped from a bucket, and if a different type remains, drop it on the bucket operator side. It was also necessary to contact the truck driver or instruct the truck driver for each type of loading because the place of placing was different depending on the type.

[0006] Among varieties of concrete, mortar has a large slump value and a large fluidity. Therefore, if the gate is opened carelessly, it may drop rapidly and bounce on the cargo bed, spilling around, and vice versa. In the case of hard concrete, the discharging operation was slow, and the waiting time before loading on the truck side was long.

The present invention solves the above-mentioned problems, and an object thereof is to provide an automatic concrete discharging device in a hopper capable of loading a required volume of concrete on a truck by operating a switch.

Another object of the present invention is to prevent the concrete from overflowing from the hopper by mixing concrete from the bucket and mixing of other kinds of concrete.

Still another object of the present invention is to enable the operator to confirm the concrete type without depending on the message, which can be discharged in an optimum flow state according to the concrete type.

[0010]

In order to achieve the above object, the present invention provides a weight detecting means for detecting the weight of concrete filled in a concrete hopper, and a volume based on a specific gravity corresponding to the type of the concrete. A weight-volume conversion means, a manual switch for opening and closing the gate of the hopper, and a current value subtracted from the initial value of the weight detection means when the switch is input And a calculating means for instructing the gate to close when the volume becomes equal to the volume.

Further, according to the present invention, means for setting the opening of the gate according to the type of concrete can be provided, and a display device for indicating the type of concrete can be provided.

Further, the hopper of the present invention receives concrete supplied from a concrete bucket, and the sum of the current concrete remaining amount in the hopper and the concrete amount in the bucket to be thrown in at one time is the capacity of the hopper. Providing an instruction means for instructing prohibition of throwing when it is larger, and prohibiting throwing when the type of concrete currently stored in the hopper and the type of concrete of the bucket to be thrown are different Instructing means for instructing can be provided.

Further, there can be provided means for receiving concrete type data by a receiver provided on the hopper side through a wireless transmitter provided on the bucket side and storing the data.

[0014]

With the above construction, the truck driver simply presses the switch to discharge the concrete having a sufficient volume to the truck side.

Upon discharge to the truck, the gate is opened corresponding to the fluidity of the concrete. Furthermore, the type of concrete received is understood by the driver at a glance.

When receiving concrete into the hopper,
When the amount of concrete in the hopper is too large, or when different kinds of concrete are about to be put into the hopper, the bucket side is automatically instructed to do so.

The concrete type loaded in the bucket is automatically stored in the hopper.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows the overall structure of a cable crane for constructing a dam according to the present invention.

In the figure, both ends of the dam 1 constructed in the mountains are fixed or tracked to the mountain sides of the upper side,
The main rope 2 stretched along the longitudinal direction of the dam 1 and the main rope 2
A trolley 3 suspended along the trolley 3, which can travel along the trolley 3, a checker 4 for towing the trolley, a concrete bucket 6 suspended below the trolley 3 via a suspender 5, and the checker 4 Then, the traverse winch 7 that reciprocates between the transport start position A on the bunker line provided with the trolley 3 on the mountain side and the transport end position B set at the center bottom of the dam 1 and the suspension rope 5 are wound and wound. Vertical winch 8 for lowering and raising and lowering bucket 6, position of trolley 3 and bucket 6
Is provided with an operation room 9 for monitoring the position of the winches 7 and drivingly controlling the winches 7 and 8.

Then, on the upper side of the transport start position A,
A transfer car 1 that conveys concrete made by a batcher plant (not shown) in a direction orthogonal to the paper surface.
0 travels, and a concrete hopper 11 is arranged at the transfer end position B. Based on the control operation from the operation room 9, the trolley 3 is moved laterally and the bucket 6 is moved up and down to the respective positions A and B. The bucket 6 is positioned and bottomed, and concrete is supplied and discharged.

The transfer car 10 is provided with a transceiver (not shown), and the bucket 6 and the hopper 11 are provided with wireless transceivers 12 and 14, respectively. The quantity data is successively tracked via these transceivers 12, 14.

The hopper 11 is a loading table 15 on a support leg 15.
It is installed in a lower part of a and has an upper part that coincides with the opening of the loading platform 15a, a load meter 16 is provided near the opening, and a lower part is a pair of gates opened and closed by an air cylinder (not shown). 17 is provided, and three limit switches sw1 to sw3 (only one is shown in the drawing) for detecting the opening of the gate 17 are provided near the gate 17.

Each of the limit switches sw1 to sw3 operates according to the type of concrete. For example, when mortar is discharged, the limit switch sw1 is turned on with the smallest opening. Further, when the medium-mixed concrete is discharged, the limit switch sw2 is turned on at an intermediate opening, and the solid-mixed concrete is set so that the limit switch sw3 is turned on at the maximum opening.

Further, under the gate 17, a space is formed to accommodate one dump truck 18.
The loading capacity of each dump truck 18 is constant, and the loading amount varies depending on the difference in specific gravity according to the type of concrete.

The transmitter / receiver 14 described above is mounted on the loading table 15a.
In addition to that, an area sensor 19 for detecting the position of the bucket 6 at the time of bottoming is provided, and the detection result of this sensor 19 is sent to the operation room 9 through the transceiver 14, and in the operation room 9. The bottoming work on the loading platform 15a is performed while controlling the position of the bucket 6 according to the detection result of the sensor 19 and the detection result of an area sensor (not shown) provided on the bucket 6 side.

A manual operation switch 21 for discharging concrete is provided on the support leg 15 at a position where it can be easily operated from the driver's seat of the truck 18, and is also provided on the side portion of the support leg 15 by the manual input operation. The opening and closing of the gate 17 is controlled by the hopper control board 22. A display device 23 is arranged near the operation switch 21 to display the type of concrete currently loaded to the driver of the truck 18.

FIG. 2 is a block diagram showing the system configuration in the control panel 22, and the control unit 24 has a transmitter / receiver 14, a load meter 16, and a drive unit 25 for the air cylinder for opening / closing the gate 17. An area sensor 19, limit switches sw1 to sw3, a manual operation switch 21, a display device 23, and a buzzer 26 for warning the end of discharge are connected, and the control unit 24 responds to the input states of the above input devices. Concrete receiving mode from the bucket 6
The command for each equipment in the automatic discharge mode of concrete and concrete is executed as follows.

[Concrete receiving mode from bucket 6]
As shown in FIG. 3, after the area sensor 19 is turned on and the bottom of the bucket 6 is confirmed, the gate 17 is opened,
When the hopper 11 is discharging concrete to the truck 18, an alarm output is generated, and a warning of dropping is issued to the bucket side through the transceiver 14 (step 1).
01-104).

When the transmitter / receiver 14 receives a signal designating a concrete type from the bucket 6 while the gate 17 is closed, the sum of the preset bucket capacity and the concrete volume remaining in the hopper is summed up. Calculates whether or not the capacity exceeds the hopper capacity (step 10
5) In case of exceeding, similarly, the alarm output of steps 103 and 104 is given to the transmitting section of the transceiver 14, and the operation room 9 side is instructed to prohibit the dropping through the transmitting section.

If not, in step 107, the concrete type currently stored is different from the designated type and the remaining amount is not 0, that is, another type of concrete is in the hopper 11. In this case, an alarm output is also given to the transceiver 14 side.

If it is determined that the concrete types are the same or the amount of concrete remaining in the hopper 11 is 0, the memory of the concrete types is updated as the newly designated concrete type and the display device 2 is used.
Display the updated product type in 3 (Steps 108, 1
09).

As described above, the supply of concrete from the bucket 6 to the hopper 11 is prohibited only when the alarm from the transceiver 14 is received on the bucket 6 side. Since concrete is supplied to the hopper 11 from 6, it is possible to prevent overflow in the hopper 11 and mixing of different kinds of concrete.

[Concrete Automatic Discharge Mode] As shown in FIG. 4, first, the predetermined loading capacity of the truck 18, that is, the required discharge capacity is divided by the specific gravity d according to the stored product type data. , The released weight w is obtained. Next, the released weight w is subtracted from the present weight W measured by the load meter 16, the weight W1 of the load meter 16 after the release is set, and then the opening of the gate 17 is set based on the product type data. It waits until is pressed (steps 201 to 204). Switch 2 by driver
When 1 is pressed, the air cylinder is driven and the gate 17
Opens and the concrete is discharged to the truck 18 side.
At this time, when the limit switch sw1 to sw3 corresponding to the set type is turned on,
The air cylinder is stopped, the gate 17 is kept at the optimum opening according to the product type, and is kept in that state until the load of the load meter 16 reaches the set weight W1 or 0 (step 20).
6-208).

When the set weight W1 or empty, the air cylinder is driven to the opposite side, the gate 17 is closed, one discharging operation is completed, and the buzzer 26 issues an end warning (steps 209 and 210). .

The truck 1 loaded with concrete
The driver of No. 8 displays the concrete type received by the display device 2
As it can be confirmed in step 3, you can immediately go straight to the place where the relevant type of product is placed. If the remaining amount is not 0 at this point (step 211), the process returns to step 204 again, and waits until the driver presses the switch 21.

When the value of the load cell indicates 0, that is, when the inside of the hopper 11 is empty, an alarm release is output and this is transmitted to the bucket 6 side through the transceiver 14 (step 212, 213). This work is performed when trying to supply a different kind of concrete in the concrete receiving mode, and in the normal case, the concrete remaining amount in the hopper 11 does not become zero.

In the above embodiments, the present invention is applied to a concrete discharging hopper for constructing a dam, but the present invention is not limited to this, and the concrete discharging hopper is used in another concrete manufacturing plant. Of course, it can also be applied to.

[0038]

As described above in detail with reference to the embodiments, in the concrete ejecting apparatus for the hopper according to the present invention, the truck driver only pushes the switch so that the volume of the volume is not excessive. Concrete is released to the truck side, and when it is released to the truck, the gate is opened corresponding to the fluidity of the concrete, so that defects due to splashing and insufficient flow are eliminated. Further, since the type of concrete received is displayed, the driver can recognize the type without sending a message. Therefore, it is possible to eliminate the trouble caused by the conventional operation of the operator, eliminate the need for the operator, and save labor.

Further, in the case where concrete is supplied to the hopper by a bucket, when the concrete amount in the hopper is too large or concrete of a different type is about to be put into the hopper at the time of receiving concrete into the hopper, the concrete is automatically supplied. Since the bucket prohibition command is given to the bucket side, problems due to overflow and mixing of different types of concrete can be avoided.

Further, in the present invention, since the concrete type loaded in the bucket is automatically stored in the hopper, it is not necessary to inquire or check the type.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of a cable crane according to the present invention.

FIG. 2 is a block diagram showing a system configuration of a hopper.

FIG. 3 is a flowchart showing a processing procedure in a concrete receiving mode.

FIG. 4 is a flowchart showing a processing procedure in an automatic concrete discharging mode.

[Explanation of symbols]

 6 concrete bucket 11 concrete hopper 13 bucket side wireless transmitter / receiver 14 hopper side wireless transmitter / receiver 16 load cell 17 gates sw1 to sw3 gate opening detection limit switch 18 dump truck 21 concrete discharge operation switch 22 hopper control panel 23 display device 24 Control unit 25 Drive unit for gate opening / closing cylinder

Claims (6)

[Claims] 1. A weight detecting means for detecting the weight of concrete filled in a concrete hopper, a weight-volume converting means for converting a volume into a weight based on a specific gravity corresponding to the type of the concrete, and a gate of the hopper. A manual switch for opening and closing, and a calculation for instructing the gate to be closed when the present value is subtracted from the initial value of the weight detection means when the switch is input and when this becomes equal to a predetermined set discharge volume An automatic concrete discharging device in a hopper, comprising: 2. The automatic concrete discharging device for a hopper according to claim 1, wherein the hopper is provided with means for setting an opening of the gate according to a type of the concrete. 3. The apparatus for automatically discharging concrete in a hopper according to claim 1, wherein the hopper is provided with a display device for indicating the type of concrete. 4. The hopper receives concrete supplied from a concrete bucket, and the sum of the current residual concrete amount in the hopper and the concrete amount in the bucket to be thrown in at one time is larger than the capacity of the hopper. 4. An automatic concrete discharging device for a hopper according to claim 1, further comprising an instruction means for instructing prohibition of throwing. 5. An instruction means is provided for instructing prohibition of the input when the type of concrete currently stored in the hopper and the type of concrete of the bucket to be input are different. 4. The automatic concrete discharging device in the hopper according to 4. 6. A means for receiving concrete type data by a receiver provided on the hopper side through a wireless transmitter provided on the bucket side and storing the data. 4. An automatic concrete discharging device in the hopper according to 4 or 5.