JPH057280B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for preventing oil from being mixed when loaded into a tank truck at an oil depot.

Conventionally, when loading oil into a tank truck at an oil depot, there have been accidents where different types of oil are accidentally loaded into the tank. Because it relied on visual inspection, it was an extremely uncertain method of confirmation, and had the disadvantage of often causing mistakes in oil mixtures.

In this invention, the key storage device is provided with a switch mechanism for operating the loading motor provided in each oil tank in the oil depot, and the key storage device stores the key for opening and closing the locking device of the hatch handle of the tank truck. possible and at the same time 2
The switch mechanism is configured to prevent the removal of more than one key, and the switch mechanism is configured to prevent the key from being removed.
By setting it in the OFF state and turning it ON when the key is removed, only the loading motor corresponding to the removed key is activated. When loading a certain oil type, if you remove the key from the key storage device and release the locking device on the hatch handle of the tank truck, you can use the same key to load the oil. Turn on the switch mechanism of the motor for loading the oil tank.
Make sure that only the type of oil specified by the same key is loaded from the oil tank onto the tank truck, and there is a risk of misselling at a gas station due to loading a different type of oil onto the tank truck by mistake. It is an object of the present invention to provide a device for preventing oil from being mixed when loaded onto a tank truck at an oil depot.

An embodiment of the present invention will be described in detail based on the drawings. In FIG. 9, A indicates a gas station, and underground of the gas station A, there are a number of underground tanks 1-1, 1-2, 1-1 for each type of oil. 3... are buried, and from each underground tank of the gas station A, a fuel filler port protrudes above the ground via a pipe 2 buried underground.

Each oil filler port is constituted by a coupling ring 3, and a lid body 4 is screwed into the coupling ring 3 so as to be openable and closable.

That is, the coupling ring 3 is formed in a male shape, and a female-shaped lid body 4 is screwed onto the upper part of the coupling ring 3, and the upper end of an upper latch piece 5 is connected to the peripheral wall of the lid body 4. A locking rod insertion hole 6 is provided at the lower part of the coupling ring 3, and a lower latch piece 7 is provided protruding from the lower part of the peripheral wall of the coupling 3, and a locking hole 8 is provided at the tip of the lower latch piece 7. . Furthermore, a certain gap 9 is formed between the upper latch piece 5 and the lower latch piece 7. Each underground tank 1-1, 1-
The following locking devices M-1, M-2, M-3, etc. are attached to the upper and lower latch pieces 5, 7 provided on the couplings 3, respectively.

In other words, the locking device M locks the money receiver 10 on the left side.
and the lock body 11 on the right side by connecting member 12.
It is connected via. Above the connecting member 12, the lock rod 13 is moved from the lock body 11 to the receiver 10.
The lock lever 13 is constructed so as to be able to move back and forth up to the lock body 11 by a lock mechanism (not shown) built into the lock body 11. .

Further, below the connecting member 12, a locking rod 14 is installed between the lock body 11 and the receiver 10.

When unlocking the lock device M, insert the key K' into the key insertion hole 15 provided on the side of the lock body 11, slide the lock rod 13 backward, and then lock the lock device M and the upper part. By releasing the locking engagement with the latch piece 7, the locking device M is rotated downward about the locking rod 14, and the lid body 4 is rotated to separate from the coupling ring 3 and open.

In this way, lock devices M-1, M-2, M-
3... are installed, and keys K'-1, K'-2, K'-3... that can unlock each lock device M-1, M-2, M-3... Each key is stored in a separate key storage device S' installed at gas station A.

In addition, each tank chamber 16-1, 16-2, 1 of tank truck B that refuels gas station A
6-3... have a hatch handle 17 and a bottom valve handle 18 protruding from the top. The hatch handle 17 is used to open and close the hatch when refueling the tank chamber of tank truck B at an oil depot, and the bottom valve handle 18 is used to open and close the bottom valve when taking out oil from each tank chamber 16. It is what you use. A lock string 19 is hung between the bottom valve handle 18 and the hatch handle 17, and the loop portion 19-1 at one end of the string 19 is a lock rod of the lock device N having the same structure as the lock device M. N-13, and the other end loop portion 19-2,
They are respectively engaged with the locking rods N-14 of the locking device N. The lock string 19 described above is attached to the hatch handle 17 and the bottom valve handle 18 provided in each tank chamber, and the lock device N-
1, N-2, N-3... are lock devices M-1, M-2, M installed at the oil filling port of gas station A.
-3..., and can only be unlocked with the keys K'-1, K'-2, K'-3... for unlocking the lock device M.

Note that each of the locking devices M and N is provided with a column 20 in which the name of the oil type, such as regular gasoline, high-octane gasoline, diesel oil, kerosene, etc., is written.

In addition, P indicates an oil depot, and the oil depot P includes oil tanks 21-1, 21-2 for each oil type,
From 21-3..., a loading motor m- is used as a device for loading oil into tank truck B.
1, m-2, m-3, . . . , and by operating the motor m, oil can be injected from the oil tank 21 into the tank truck B via the hose.

To be more specific, oil tank 21-1, 2
1-2, 21-3..., regular gasoline,
There are tanks for each oil type, such as high-octane gasoline, diesel oil, and kerosene, and each tank is equipped with a loading motor m-1, m-2, m-3, etc. for each oil type. When loading regular gasoline into the tank truck B, the loading motor m-1 of the oil tank 21-1 storing the regular gasoline is activated, and the tank chamber 1 of the tank truck B stores the regular gasoline.
6-1, and at this time, on the tank truck B side, the bottom valve valve handle 18 and hatch handle 17 in the tank chamber 16-1 for storing regular gasoline are injected into the tank 6-1.
Unlock the lock device N-1 and enter the tank room 16-1.
The hatch will be opened and regular gasoline will be injected.

Here, oil tank 21 for regular gasoline
In order to be able to reliably inject regular gasoline into the tank chamber 16-1 for storing regular gasoline of the tanker truck B from -1, a key storage device S is installed at the oil depot P. Keys K-1, K-2, K- stored in device S
3... are tank room locking devices N-1, N-2,
N-3... is a key that can be opened and closed respectively, and a desired key can be retrieved from the key storage device S, for example, a locking device N of a tank chamber for storing regular gasoline.
-1 When the unlocking key K-1 is taken out, the loading motor m-1 of the oil tank 21-1 for regular gasoline is automatically activated, and only regular gasoline is loaded from the oil tank 21-1. When the vehicle is ready for loading, the key K-1 taken out from the storage device is used to unlock the locking device N-1 of the tank chamber for storing regular gasoline, and securely enters the tank chamber 16-1 for storing regular gasoline. Regular gasoline can be loaded from the oil tank.

As mentioned above, the key storage device S installed at the oil depot P has the same structure as the key storage device S' at the gas station A, and the keys K-1, K-2, and K stored at each -3... and key K'-
1, K'-2, K'-3, etc. correspond to each other with the same key, and this prevents loading of different types of oil when loading oil from oil depot P to tank truck B, and also prevents loading of different types of oil from tank truck B. In the case where B arrives at gas station A and fills the underground tank of the gas station with oil, it is possible to prevent the loading and unloading of different types of oil.

Next, the key storage device S that stores each key K-1, K-2, K-3, . . . will be explained.

That is, the key storage device S is installed at the oil depot P, and is composed of a key storage frame 22 and a slidable instruction plate 23.
In the key storage frame 22, in order to store each key,
Partition plates 24 are provided at regular intervals, and each key is housed between them so as to be able to be removed upwardly.The upper surfaces of each key and the partition plate 24 are at the same height, and have common horizontal grooves 25, 26. is formed.

Further, the instruction plate 23 is configured to be able to slide horizontally between the keys stored in the key storage frame 22 and the upper surface of the partition plate 24. A protrusion 27 is formed, and the protrusion 27 is cut out in the middle with a width that is approximately the same as the width of the key, and a recessed part 28 is formed on the back surface of the indicator plate 23 corresponding to this cutout. A plate spring 29 is provided in the concave portion 28, and a tip of the plate spring 29 partially protrudes outward. A pointing arrow 30 is provided on the surface of the pointing plate 23 located on the opposite side of the concave portion 28 .

The shape of the key K is a long and narrow plate, and a cutout groove k for unlocking that fits each lock device is provided at the tip.

Therefore, when the instruction plate 23 is attached to the key storage frame 22, the protrusion 27 slides in the horizontal grooves 25, 26, and the protruding portion of the plate spring 29 also touches the upper surface of each key and the upper surface of the partition plate 24. Therefore, the keys are pushed back into the concave portion 28, so that the sliding of the indicator plate 23 is not obstructed, and the protrusions 27 prevent the keys from being removed.

However, when the indicating arrow 30 is aligned with any key position, for example, the key K-1 for regular gasoline, the recessed portion 28 is located at the key K-1, and in this recessed portion 28, the protrusion 27 Since the key K-1 is notched, it is possible to remove the key K-1.
After the key K-1 is removed, the protruding end of the plate spring 29 fits between the partition plates 24, and the partition plates 24
Due to this, the instruction board 23 cannot be slid.
When the key K-1 is returned to its original position, the instruction plate 2
3 slides, and it is constructed so that more than one key can never be taken out.

Moreover, a switch mechanism 29a is interposed between the plate spring 29 and each partition plate 26, and when the key K-1 is stored, the key acts as a switch cutoff mechanism and the switch mechanism 29a is inserted. is in the OFF state, and when the key K-1 is removed, the switch mechanism 29a is in the ON state.
A switch mechanism 29a is provided for each oil tank 21-1, 21-2, 21-3... for each oil type.
For example, by removing the key K-1 for regular gasoline, the oil tank 21-1 for storing regular gasoline can be opened. Switch mechanism 29a that operates the loading motor m-1
turns on, the motor m-1 operates, and regular gasoline can be loaded from the oil tank 21-1.

This invention is constructed as described above, and how to use it will be explained as follows.

That is, when loading a predetermined type of oil from the oil tanks 21-1, 21-2, 21-3, . . . of the oil depot P into the tank truck B, for example, when loading regular gasoline First, only the key K-1 for regular gasoline is extracted from the key storage device S installed at the oil depot P. This key K-1 is used to unlock the lock device N-1 of the hatch handle 17 of the tank chamber 16-1 for regular gasoline of the tank truck B.

In this case, the key K-1 cannot, of course, unlock the locking device of the tank chamber for storing oil types other than regular gasoline.

Moreover, at the same time as this key K-1 is removed from the key storage device S, the regular gasoline switch mechanism 29a is turned on, and the loading motor m-1 of the oil tank 21-1 containing regular gasoline is activated. Once activated, regular gasoline can be loaded from the oil tank into the tank truck, ensuring that regular gasoline can be loaded from the oil tank into the tank chamber of the tank truck that stores regular gasoline, and other types of oil must never be loaded. It is something that cannot be done.

Next, tank truck B is transported to gas station A, and from the tank chambers 16-1, 16-2, 16-3... of tank truck B, each underground tank 1-1, 1-2, 1-3... When refueling, first indicate the type of oil to be refueled and the indication board of the key storage device S' installed at gas station A.
For example, take out key K'-1 in conjunction with key K'-1 for regular gasoline. When the key K'-1 is removed, the instruction plate 23 is automatically fixed and cannot slide, and the other keys K'-2,
K'-3... cannot be taken out. With the regular gasoline key K'-1 taken out, the underground tank 1- for storing regular gasoline is opened.
1, unlock the locking device M-1 of the injection port 1, open the lid 4 of the coupling 3, connect the hose c of the tank truck B to the coupling 3, and then use the same key K'-1 to connect the hose c of the tank truck B. Then, the bottom valve handle 18 and the hatch handle 17 are unlocked by the locking device N-1, and regular gasoline is poured from the tank chamber 16-1 containing regular gasoline into the hose C through the filler port into the underground tank 1-1. 1 with regular gasoline, and when refueling is completed, each lock device M-1, N is turned off with key K-1.
-1, store it in the key storage device S, slide the instruction plate 23 to the position of the key K'-2 for another oil type, and take out the key K'-2 for the other oil type. , underground tank 1 using the same procedure as key K'-1.
-2 is to be refueled with another type of oil.

According to this invention, it is possible to reliably load the desired type of oil into a tank truck at an oil depot without making a mistake in loading the oil type into a tank truck, and it is possible to prevent mistakes when filling an underground tank from a tank truck at a gas station. It also prevents lubrication. In particular, the key storage device is equipped with a function to prevent the removal of two or more keys, and a function to activate the loading motor corresponding to the removed key, making it possible to double check the oil type. This makes it possible to further ensure prevention of erroneous lubrication.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the usage state of the device of the present invention. Figure 2 is an explanatory diagram of the main parts. Figure 3 is a front view of the key storage device. Figures 4 and 5 are・Figure 6 is a sectional view taken along lines 3 and 3. ・Figure 6 is a sectional view taken along lines 3 and 3. ・Figure 7 is a partial perspective view of the back of the instruction plate. ・Figure 8 is a partial perspective view of the key storage frame. Partial perspective view - Figure 9 is an explanatory diagram of loading and unloading of a tank truck at a gas station - Figure 10 is a lock device used on the bottom valve handle and hatch handle of a tank truck - Figure 11 is a diagram of the lock device 12 and 13 are explanatory diagrams showing the state in which the locking device is used for coupling. P... Oil depot, B... Tank truck, 21
...Oil tank, m...Loading motor, 16
...Tank room, 17...Hatch handle, N...
Lock device, S...Key storage device, K...Key.

Claims (1)

[Claims] 1 Switch mechanism 29 for operating the loading motors installed in each oil tank at the oil depot.
a is provided in the key storage device S, and the key storage device S is
The switch mechanism 29a is configured to be able to store the key for opening and closing the locking device of the hatch handle of the tank truck and to prevent the removal of two or more keys at the same time.
A device for preventing oil from being mixed in a tank truck at an oil depot, which is configured to be in an OFF state and to be in an ON state when a key is removed to operate only the loading motor corresponding to the removed key.