JPH06312794A - Division-to-scale and unloading apparatus for tank rolly - Google Patents

Abstract

PURPOSE:To make unloading by division to scale possible, even if a hatch is not divided unnecessarily, by connecting a liquid level sensor, bottom valve, liquid sensor and division-to-scale setting key with a controller. CONSTITUTION:When a division-to-scale quantity is set by a division-to-scale setting key 7, the division-to-scale storage means 12 of a controller 10 compares a liquid-quantity signal from a liquid-quantity operation means 11 for operating a signal from a liquid level sensor 2 into a liquid quantity with the division-to- scale quantity and stores the division-to-scale quantity if the liquid quantity in a hatch is more than the division-to-scale quantity. When an unloading switch 8 is then pushed, a bottom valve 3 is opened and unloading is started. When the division-to-scale quantity from the division-to-scale storage means 12 is equal to an unloading quantity from the operation means 11, the bottom valve 3 is closed and an annunciator 9b is operated to inform of the end of unloading. In the case of unloading the whole quantity in the hatch, also, a division-to-scale judgment means 13 opens the bottom valve 3 to start unloading when the unloading switch 8 is pushed. On the basis of a signal from a liquid sensor 5, then, the bottom valve 3 is closed and the annunciator 9b is operated by an oilless state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scale unloading device for a tank truck.

[0002]

2. Description of the Related Art In a conventional tank truck, the entire amount of oil in the tank hatch is unloaded.

[0003]

However, the capacity of each hatch is determined to be, for example, 1 kl and 2 kl, and thus, if the total amount of oil in the hatch is unloaded, for example, 0.5 kl will be unloaded. There was a problem that the number of hatches was increased when the hatch was divided into small capacities so that it could not be unloaded, so-called unbalanced unloading, and unloading in small quantities.

It is an object of the present invention to provide a trolley unloading device for a tank lorry which enables blast unloading without dividing the hatch unnecessarily.

[0005]

According to the present invention, a liquid level sensor and a bottom valve provided on a tank, a liquid sensor provided on a discharge pipe, and the liquid level sensor, a bottom valve and a liquid sensor are provided. A control device, which is connected to each other and has a length setting key, is provided.

[0006]

In the above control device, a liquid amount calculating means connected to a liquid level sensor, a scale storing means connected to the calculating means and a scale setting key, the means, liquid sensor, and unloading A scale division judging means connected to the switch, a scale division storing means, a liquid amount calculating means, and a comparing means connected to the unloading switch are provided, and the scale dividing judgment means and the comparing means are connected to the bottom valve to measure the liquid amount. It is preferable that the calculation means is connected to the display device, and that the length-division determination means, the length-division storage means and the comparison means are connected to the alarm device.

[0007]

In the tank lorry scale unloading device configured as described above, when unloading is started, the control device opens the bottom valve, and the unloading amount set by the scale setting key and the oil level sensor. Compare with the unloading amount calculated from the remaining amount in the tank obtained from, and when they match, the bottom valve is automatically closed. Therefore, it is possible to surely carry out unloading.

[0008]

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

In FIG. 1, the tank 1 of the tank truck R
There is one hatch H in this hatch H,
A liquid level sensor 2 and a bottom valve 3 are provided. In this embodiment, one hatch H is used for simplicity of explanation, but it is clear that a plurality of hatches may be provided. The bottom valve 3 communicates with a discharge pipe 4, and the discharge pipe 4 is provided with a liquid sensor 5 and a discharge valve 6. The liquid level sensor 2, the bottom valve 3, and the liquid sensor 5 are connected to the control device 10 in the control panel C provided in the cab D, respectively.

On the control panel C, there is a scale setting key 7 for inputting a scale amount, an unloading switch 8, a scale amount display 9a, and an alarm 9b for notifying in a manner described later. Is provided.

As shown in FIG. 2, the liquid amount calculation means 11 of the control device 10 calculates the liquid level signal from the liquid level sensor 2 into a liquid amount and displays it on the display 9a. The shredding storage unit 12 compares the shredding amount from the shredding setting key 7 with the liquid amount from the liquid amount calculating unit 11, and when the shredding amount is larger, the alarm 9
When b is not activated, the fact that the length division is not possible is notified, and when it is small, the length division amount is set and stored.

The length division determining means 13 is the length division storage means 1.
When the lengthwise unloading is not stored in 2, the bottom valve 3 is opened in response to the signal from the unloading switch 8, the bottom valve 3 is closed in response to the no liquid signal from the liquid sensor 5, and the alarm 9b is turned on. It activates and notifies the end of unloading.

The comparing means 14 receives the signal from the unloading switch 8 and opens the bottom valve 3 to compare the liquid amount signal from the liquid amount calculating means 11 with the shredding amount from the shredding storage means 12, When it is determined that the unloading of the shredding amount is completed, the bottom valve 3 is closed, the alarm 9b is operated to notify the end of the unloading, and the shredding storage erasing signal is output to the shredding storage means 12.

Next, the working mode will be described with reference to FIG.

First, when the scale setting amount is set by pressing the scale setting key 7 of the control panel C (step S1), the controller 10
The division storage means 12 compares the liquid amount signal from the liquid amount calculation means 11 for calculating the signal from the liquid level sensor 2 with the liquid amount, and the set division amount to compare the liquid in the hatch H. It is determined whether or not the amount is larger than the set division amount (step S
2). In the case of YES, the length division storage means 12 stores the amount of length division (step S3), and in the case of NO, the alarm 9b.
Is activated to notify that the amount of liquid is larger than the amount of liquid in the hatch (step S4), and the process returns.

After setting the shredding amount, when the unloading switch 8 is pressed next (step S5), it is determined whether or not the shredding amount in step S3 is the stored shredding unloading (step). S6). In this case, since the shred amount has been set, the determination result is YES, and the bottom valve 3 is opened to start unloading (step S7). Then, when the unloading progresses, the comparing unit 14 determines whether or not the shredding amount from the shredding storage unit 12 and the unloading amount from the computing unit 11 are equal (step S8). When the amount to be unloaded and the amount to be unloaded become equal, the bottom valve 3 is closed and the alarm 9b is activated to notify the end of unloading, and the memory of the amount to be unloaded in the size storing means 12 is erased (step S9). ), Return.

When unloading the entire amount in the hatch, the scale is not set (step S1), and the unloading switch is pressed (step S5), so that the scale is not unloading (step S6). The length-dividing determination means 13 opens the bottom valve 3 and starts unloading (step S10). Then, when the unloading progresses and, based on the signal from the liquid sensor 5, there is no oil, that is, when the unloading of the entire amount is completed (step S11), the bottom valve 3 is closed and the alarm 9b is operated to notify the completion of the unloading. Then (step S12), the control ends.

FIG. 4 shows another embodiment of the present invention, in which the tank 1A of the tank truck R1 has three hatches H1 to H3 (in the case of being collectively referred to, reference numeral H is used), and these hatches H are formed. Liquid level sensors 2a-2c and bottom valves 3a-3, respectively
c (when the generic name is used, reference numeral 3 is used), the bottom valves 3 thereof are connected to the common pipe 4A, and the control device 10A is provided.
Connect the hatch selection switch 15 to the
This is an example configured in the same manner as.

In this embodiment, when unloading, as shown in FIG. 5, basically the same control as in FIG. 3 is performed.

When the hatch number is set by the hatch selection switch (step S19), the controller 10A displays the liquid amount of the selected hatch H on the display 9a (step S20). Next, set the shred amount (step S
21), it is determined whether the liquid amount is larger than the shred amount (step S22). In the case of YES, the scaled amount is stored (step S23), and in the case of NO, the alarm 9b is operated to notify that the scaled amount is larger than the liquid amount (step S24), and the process returns.

On the other hand, after the hatch is selected, the unloading switch 8 is turned on (step S25). It is determined whether or not the hatched amount in step S23 of this hatch is stored (step S26). If YES, the bottom valve 3 is opened to start unloading (step S27). Then, when the unloading progresses and the shredding amount becomes equal to the unloading amount (step S28), the bottom valve 3 is closed and the alarm 9b.
To notify the end of unloading, to erase the memory of the shredding amount, store the shredding process in the shredding storage means 12 (step S29), and return. This hatch H is because the oil remains in the common pipe 4A,
This is because all other items cannot be unloaded.

After selecting the hatch (step S
19), without setting the shred amount (step S21),
When the unloading switch is turned on (step S25), and if step S26 is NO, that is, if the size-divided amount is not stored, it is determined whether or not the length-division process is stored (step S30). If YES, the bottom valve 3 is opened to start unloading (step S31), and when the signal from the liquid sensor 5 indicates that there is no oil, that is, the end of the total unloading (step S32), the bottom valve 3 is closed. The alarm 9b is operated to notify the end of unloading, the memory during the grading is erased (step S33), and the process returns.

Further, after the hatch is selected, the unloading switch is turned ON, step S26 is NO, and step S26 is NO.
If 30 is NO, it is determined whether or not there is a memory during the division of another hatch (step S34). If YES, the alarm 9b is actuated, there is a memory that the other hatch is being scaled, and it is notified that this hatch cannot be unloaded (step S35), the process returns, and in the case of NO, that is, In the case of unloading after graduation and unloading or full unloading without grading, the bottom valve 3 is opened to start unloading (step S36), and a signal from the liquid sensor 5 causes no oil,
That is, after confirming the end of all unloading (step S3
7) Then, the bottom valve 3 is closed and the alarm 9b is operated to notify the end of unloading (step S38), and the process returns.

[0024]

Since the present invention is configured as described above, it is possible to carry out division unloading, that is, shredding unloading.

Therefore, it is possible to reduce the number of hatches and prevent excessive wholesale.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a control block diagram.

FIG. 3 is a control flowchart.

FIG. 4 is a side view showing another embodiment of the present invention.

FIG. 5 is a control flowchart.

[Explanation of symbols]

 D ... Operator's cab H ... Hatch R, R1 ... Tank lorry 1, 1A ... Tank 2, 2a-2c ... Liquid level sensor 3, 3a-3c ... Bottom valve 4 ... Discharge pipe 4A ... Common pipe 5 ... Liquid sensor 6 ... Discharge valve 7 ... Scale setting key 8 ... Unload switch 9a ... Indicator 10, 10A ... Control device 11・ ・ ・ Liquid amount calculation means 12 ・ ・ ・ Scale division storage means 13 ・ ・ ・ Scale division determination means 14 ・ ・ ・ Comparison means 15 ・ ・ ・ Hatch selection switch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ken Watanabe 2-12-13 Shibaura, Minato-ku, Tokyo Tatsuno Mechatronics Co., Ltd.

Claims (1)

[Claims] 1. A liquid level sensor and a bottom valve provided in a tank, a liquid sensor provided in a discharge pipe, the liquid level sensor,
A trolley unloading device for a tank lorry, characterized in that a bottom valve and a liquid sensor are connected to each other, and a control device having a scale setting key is provided.