JP2965110B2 - Tank lorry unloading equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

This invention has a plurality of hatches,
The present invention relates to an unloading apparatus for tank lorries in which each hatch is connected to a common pipe having a common discharge valve via a bottom valve.

[0002]

2. Description of the Related Art In a conventional tank truck, the entire amount of oil in each hatch is unloaded to prevent oil mixture in a common discharge pipe or the like.

[0003] That is, conventionally, the capacity of each hatch is set to, for example, 1 kl and 2 kl, and the entire unloading is performed. Did not. Further, when the hatch is divided into small volumes so as to be able to be unloaded little by little, the number of hatches increases.

On the other hand, Japanese Utility Model Application Laid-Open No. 62-122100 discloses a technique for refueling in small portions. However, this known technique is a technique for terminating the preset refueling and automatically returning after a predetermined time has elapsed, and cannot cope with unloading of a tank lorry having a plurality of hatches.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art, and is intended to reliably carry out unloading by sizing or unloading in a tank lorry having a plurality of hatches. It is an object of the present invention to provide an unloading device for tank lorries that can be controlled so that unloading of another hatch is not mistakenly performed while unloading from one hatch. .

[0006]

According to the present invention, there is provided an apparatus for unloading a tank lorry having a plurality of hatches (H) and a common pipe (4A) having a common discharge valve (6). ) Are connected via the bottom valve (3), respectively. In the unloading apparatus for tank lorries (R1), the control panel (C) provided in the operator cab (D) has a scale setting key (7). A liquid level sensor (2) and a bottom valve (3) provided at each hatch (H).
And a control device (10) connected to the liquid sensor (5) provided in the common pipe (4A). The control device (10A) is connected to the liquid level sensor (2) to control the liquid amount. Liquid volume calculating means (11) to be operated, and scale storage means (12) connected to the liquid volume calculating means (11) and the scale setting key (7) to store the scaled amount and the signal during the scale setting.
A scale determining means (13) connected to the scale storing means (12), the liquid sensor (5) and the unloading switch (8) to determine whether the bottom valve (3) is open or closed; And comparing means (14) connected to the storage means (12), the liquid amount calculating means (11) and the unloading switch (8) for comparing the scaled amount and the unloaded amount, and Equipment (1
0) has a function of storing the hatch in the measure storage means (12) when the measure is being unloaded and the measure determining means (13) determining that unloading of other hatches is impossible. I have.

[0007]

According to the unloading device for tank lorries configured as described above, when the amount of sizing is input with the sizing setting key, the control device uses
The liquid amount in the hatch obtained by the liquid amount calculating means from the signal of the liquid level sensor is compared with the input sizing amount to determine whether or not unloading is possible, and stored in the sizing storage means. . Then, when the unloading switch is pressed, the scale storage unit is checked, and the unloading amount is compared with the scaled amount by the comparison unit.
The bottom valve opens and unloads until the amounts are equal, and then a signal of "measuring" (in the hatch, a signal as a flag indicating that unmeasuring has already been performed) is taken. It is stored in the split storage means.

On the other hand, if the unloading switch is pressed without setting the scale, it is determined that the entire amount is unloaded, and the bottom valve is opened and unloading is performed until the liquid sensor detects no oil.

Therefore, by operating the scale setting key and the unloading switch, it is possible to determine whether to unload the entire amount or to unload the specified amount of the size, and to reliably perform the unloading. At the same time, it is impossible in the present invention to carry out unloading from another hatch while performing unloading (or unloading) in one hatch. If different oil types are used, oil mixing is prevented.

In the case where the hatch being unloaded and the other hatch are of the same oil type, the hatch is unloaded from the other hatch while the hatch is being unloaded. In this case, the problem of oil mixture in the case of different oil types does not occur, but the same type of oil will be unloaded from both the hatch and the other hatch, and the unloading will be performed. It is not possible to accurately determine the amount of oil that has been removed. On the other hand, according to the present invention, it is impossible to perform unloading from another hatch during unloading by sizing. Has been unloaded and the unloading quantity cannot be determined accurately.
Problem) does not occur, and the unloading amount is always accurately obtained.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention, in which three hatches H1 to H3 are provided in a tank 1A of a tank truck R1.
(When collectively referred to, use a symbol H). These hatches H are respectively provided with liquid level sensors 2a to 2c (when collectively used, use a symbol 2) and bottom valves 3a to 3c (when collectively used). Are provided with a reference numeral 3), and a common pipe 4A is connected to these bottom valves 3;
A liquid sensor 5 and a discharge valve 6 are provided. The liquid level sensor 2, the bottom valve 3, and the liquid sensor 5 are connected to a control device 10 in a control panel C provided in the cab D, respectively.

Here, the discharge valve 6 is a manual valve, and is opened and closed by an operator who performs an unloading operation. As in the prior art, if any of the bottom valves 3 is opened, after the time lag required to confirm that the connection between the tank lorry and the service station equipment is correct has elapsed. Then, the discharge valve 6 is manually opened. When one of the bottom valves 3 is closed, the bottom valve 3 (of the common pipe 4A) is closed.
And after a time lag has passed which is sufficient for oil to flow through the area between the discharge valve 6 and the oil and no longer exist in the area.
The discharge valve 6 is also closed manually. The opening / closing operation of the discharge valve 6 performed in conjunction with the opening / closing of the bottom valve is the same as in the related art.

The control panel C includes a scale setting key 7 for inputting a scale size, an unloading switch 8, a scale size display 9a, an alarm 9b for notifying in a manner described later, and a hatch. A selection switch 15 is provided.

As shown in FIG. 2, the liquid amount calculating means 11 of the control device 10 calculates the liquid level signal from the liquid level sensor 2 into a liquid amount and displays the same on the display 9a. The scale storage means 12
The slicing amount input by the slicing setting key 7 is compared with the liquid amount from the liquid amount calculating means 11. When the scaled amount is larger, the scaled storage means 12 activates the alarm 9b to notify that the scaled-out operation is impossible. On the other hand, when the scaled amount is smaller than the liquid amount, the scaled-up amount is set and stored. I do.

[0015] The dividing means 13 is a dividing means.
In the case where the scaled amount is not stored in 2, the bottom valve 3 is opened by receiving a signal from the unloading switch 8, the bottom valve 3 is closed by receiving the no-liquid signal from the liquid sensor 5, and the alarm 9 b is activated. To inform the end of unloading.

The comparing means 14 receives the signal from the unloading switch 8, opens the bottom valve 3, and compares the liquid amount signal from the liquid amount calculating means 11 with the measure amount from the measure storage means 12. Then, when it is determined that the unloading of the weighing amount has been completed, the bottom valve 3 is closed, the alarm 9b is operated to notify the ending of the unloading, and a weighing storage erasure signal is output to the weighing storage means 12. .

Next, an operation mode of one hatch will be described with reference to FIG. When the hatch number is set by the hatch selection switch 15 (step S10).
19 is Yes), the liquid amount of the selected hatch H is displayed on the display 9a (step S20).

Next, when the scale amount is set (Yes in step S21), the liquid amount in the hatch is set in step S2.
It is determined whether or not it is greater than the scale setting amount set in step 1 (step S22). When the liquid amount in the hatch is larger than the set dividing amount (Yes in step S22), the dividing amount is stored (step S23). When the liquid amount in the hatch is smaller than the set dividing amount (No in step S22), the alarm 9b is operated to determine that the set dividing amount is larger than the liquid amount in the hatch. Notify (Step S
24), return.

After step S23, the unloading switch 8
Is turned on (Yes in step S25), it is determined whether or not the cut length in step S23 of the hatch H is stored (step S26). If the cut length is stored (Yes in step S26), the bottom valve 3 opens to start unloading (step S27). Then, it is determined whether or not the scaled amount is equal to the unloading amount (step S28). When the unloading proceeds and the scaled amount becomes equal to the unloaded amount (Yes in step S28), the bottom valve 3
Is closed, the annunciator 9b is operated to notify the end of unloading, the storage of the scale size is erased, and the "measuring" (signal of) is stored in the scale storage means 12 (step S2).
9).

During the unloading (step S28: No loop), step S19 is performed.
Cannot select another hatch and turn on the unloading switch for the other hatch in step S25. During the loop in which step S28 is No, step S1 is performed unless return is made via step S29.
This is because the processing of 9-S27 cannot be performed. Therefore, while carrying out unloading in one hatch, unloading is performed from another hatch,
This prevents the occurrence of a situation where oil mixture occurs or the unloading amount cannot be determined.

In step S19, hatches H1-H3
After selecting any one of the hatches, if the unloading switch 8 is turned on (Step S25 is Yes) without setting the scaled amount (No in Step S21), the scaled amount is not stored. Step S26 is No. If step S26 is No, it is determined in step S30 whether "measuring" is stored.

If "measuring" is stored for the hatch (Yes in step S30), it means that the entire hatch has been unloaded from the hatch which has already been unloaded. In that case, the bottom valve 3 opens to start unloading (step S31). Then, based on the signal from the liquid sensor 5, it is determined whether or not there is no oil, in other words,
It is determined whether the unloading has been completed (step S3).
2). If it is confirmed that there is no oil, that is, that the unloading of all the fuel has been completed (Y in step S32).
es), the bottom valve 3 is closed, the alarm 9b is operated to notify the end of unloading, and the storage of “measuring” is deleted (step S33). And return.

Here, during the full unloading (full unloading from a hatch that has already been unloaded), another hatch is selected (step S32: No loop). , Cannot be unloaded. To select and unload another hatch, select another hatch in step S19 and turn on the unloading switch in step S25.
This is because the process of steps S19 to S31 cannot be performed unless the process returns through step S33 during the loop in which step S32 is No. Therefore, it is possible to prevent the occurrence of unloading from another hatch while unloading the entire load in one hatch, causing oil mixture or making it impossible to determine the unloading amount. Is done.

If it is determined in step S30 that the hatch is not "measuring" (step S30).
30 is No), the hatch has not been unloaded, and the entire quantity is unloaded immediately. Accordingly, the bottom valve 3 is opened to start unloading (step S36), and based on the signal from the liquid sensor 5, it is determined whether or not the oil has gone out, in other words, (the unloading has not been performed). It is checked whether or not the unloading of the entire amount (from the hatch) has been completed (step S37). Oil-free state, that is,
If the unloading is completed (Yes in step S37)
s), the bottom valve 3 is closed, the alarm 9b is operated to notify the end of unloading (step S38), and the process returns.

Here, even during the complete unloading (full unloading from the hatch unloaded for the first time) (step S37: No loop), another hatch is selected and unloaded. I can't do that. Step S37 is N
This is because during the loop o, the processing in the previous steps cannot be performed unless the process returns through the step S38. Therefore, while the entire unloading is being performed in one hatch (the hatch to be unloaded for the first time), the unloading is performed from the other hatch, and oil mixture occurs or the unloading amount cannot be grasped. Is prevented from occurring.

As described above, according to the illustrated embodiment, it is determined whether or not the "measuring amount" signal is stored and whether or not the "measuring" signal is stored. Three types of unloading are confused: unloading, unloading from a hatch that has been previously unloaded, and unloading from a hatch that has not been unloaded before. Without fail.

[0027]

The present invention is configured as described above and has the following functions and effects. (A) By operating the scale setting key and the unloading switch, the unloading of the entire amount and the unloading of the specified amount are determined, and the unloading is reliably performed. (B) While unloading with one hatch, it is impossible to unload from another hatch, so there is no danger of oil mixture. (C) While unloading is performed by one hatch, the same type of oil is unloaded from another hatch, thereby preventing the unloading amount from being accurately grasped.

[Brief description of the drawings]

FIG. 1 is a side view of a tank lorry embodying the present invention.

FIG. 2 is a control block diagram embodying the present invention.

FIG. 3 is a control flowchart for implementing the present invention.

[Explanation of symbols]

 D: operation room H1 to H3: hatch R1: tank lorry 1A: tank 2a to 2c: liquid level sensor 3a to 3c: bottom valve 4A: common pipe 5: Liquid sensor 6 ··· Discharge valve 7 ··· Scale setting key 8 ··· Unloading switch 9a ··· Indicator 9b ··· Information device 10 ··· Control device 11 ··· Liquid amount calculating means 12 ... Measurement unit 13 ... Measurement unit 14 ... Comparison unit 15 ... Hatch selection switch

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Makoto Shimizu 2--12-13 Shibaura, Minato-ku, Tokyo Inside Tatsuno Mechatronics Co., Ltd. (72) Inventor Ken Watanabe 2--12-13, Shibaura, Minato-ku, Tokyo Inside Tatsuno Mechatronics Co., Ltd. (56) References JP-A-54-134098 (JP, A) JP-A-62-122100 (JP, U) JP-B-49-2208 (JP, B1)

Claims (1)

(57) [Claims] 1. A tank truck having a plurality of hatches (H) and connecting each hatch (H) to a common pipe (4A) having a common discharge valve (6) via a bottom valve (3). In the unloading apparatus (R1), a control panel (C) provided in the operator's cab (D) is provided with a scale setting key (7) and an unloading switch (8). ) Is provided with a control device (10) connected to the liquid level sensor (2) and the bottom valve (3) and the liquid sensor (5) provided in the common pipe (4A), respectively.
0A) is a liquid amount calculating means (11) connected to the liquid level sensor (2) to calculate the liquid amount, and the liquid amount calculating means (11)
And a scale setting storage means (12) connected to a scale setting key (7) for storing a scale size and a signal during the scale setting, a scale storage means (12), a liquid sensor (5) and an unloading unit. Scale determining means (13) which is connected to the switch (8) to determine whether the bottom valve (3) is opened or closed, a scale storing means (12), a liquid amount calculating means (11), and an unloading switch (8). )) And comparing means (14) for comparing the scaled amount and the unloading amount.
And the control device (10) stores the hatch in the scale storing means (1) when performing the scale unloading.
2) An unloading apparatus for tank lorries, characterized by having a function of determining the unloading of other hatches by storing and determining the unloading of other hatches.